mojoshader_assembler.c
author Ryan C. Gordon <icculus@icculus.org>
Sat, 13 Dec 2008 00:54:52 -0500
changeset 514 ba913834b491
parent 513 abd9c85ba168
child 515 58c1a7d98176
permissions -rw-r--r--
The parse_args_DCL fiasco continues.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     1
/**
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     2
 * MojoShader; generate shader programs from bytecode of compiled
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     3
 *  Direct3D shaders.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     4
 *
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     5
 * Please see the file LICENSE.txt in the source's root directory.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     6
 *
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     7
 *  This file written by Ryan C. Gordon.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     8
 */
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
     9
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    10
#define __MOJOSHADER_INTERNAL__ 1
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    11
#include "mojoshader_internal.h"
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    12
497
5b2465d40b57 Disabled tokenizer debug output for now.
Ryan C. Gordon <icculus@icculus.org>
parents: 495
diff changeset
    13
#define DEBUG_TOKENIZER 0
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    14
498
6a4b881704df Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 497
diff changeset
    15
// !!! FIXME: no #define support yet.
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    16
514
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    17
/*
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    18
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    19
Ideally, we want this, I guess:
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    20
struct TokenizerContext
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    21
{
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    22
    const char *source;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    23
    int on_endline;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    24
    unsigned int linenum;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    25
    char prevchar;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    26
    char token[64];
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    27
    char pushedback;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    28
    uint32 tokenbuf[16];
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    29
    int keywords;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    30
};
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    31
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    32
...and replace all that in Context with one TokenizerContext.
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    33
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    34
tokenize() will then work with these directly (and nexttoken() will call it
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    35
 with &ctx->tokenizerctx).
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    36
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    37
Then let these be stack-allocated as needed.
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    38
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    39
(keywords) will tell the tokenizer to give full keywords, so "dp3" is one
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    40
 token instead of two ("dp" and "3"). This will be the new behaviour, but you
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    41
 could then take a whole keyword that needs to be split (like "vs_2_0"), and
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    42
 make it the source on a stack-allocated tokenizer, with keywords set to zero.
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    43
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    44
*/
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    45
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
    46
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    47
typedef struct Context Context;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    48
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    49
// Context...this is state that changes as we assemble a shader...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    50
struct Context
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    51
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    52
    MOJOSHADER_malloc malloc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    53
    MOJOSHADER_free free;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    54
    void *malloc_data;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    55
    const char *failstr;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    56
    const char *source;
486
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
    57
    int started_parsing;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    58
    MOJOSHADER_shaderType shader_type;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    59
    uint8 major_ver;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    60
    uint8 minor_ver;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
    61
    int on_endline;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    62
    unsigned int linenum;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    63
    char prevchar;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    64
    char token[64];
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    65
    char pushedback;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    66
    uint32 tokenbuf[16];
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    67
    int tokenbufpos;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    68
    DestArgInfo dest_arg;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
    69
    uint32 *output;
486
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
    70
    uint32 *token_to_line;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
    71
    size_t output_len;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
    72
    size_t output_allocation;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    73
};
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    74
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    75
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    76
// Convenience functions for allocators...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    77
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    78
static inline int out_of_memory(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    79
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    80
    if (ctx->failstr == NULL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    81
        ctx->failstr = out_of_mem_str;  // fail() would call malloc().
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    82
    return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    83
} // out_of_memory
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    84
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    85
static inline void *Malloc(Context *ctx, const size_t len)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    86
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    87
    void *retval = ctx->malloc((int) len, ctx->malloc_data);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    88
    if (retval == NULL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    89
        out_of_memory(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    90
    return retval;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    91
} // Malloc
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    92
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    93
static inline void Free(Context *ctx, void *ptr)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    94
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    95
    if (ptr != NULL)  // check for NULL in case of dumb free() impl.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    96
        ctx->free(ptr, ctx->malloc_data);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    97
} // Free
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    98
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
    99
static int failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   100
static int failf(Context *ctx, const char *fmt, ...)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   101
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   102
    if (ctx->failstr == NULL)  // don't change existing error.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   103
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   104
        char scratch = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   105
        va_list ap;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   106
        va_start(ap, fmt);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   107
        const int len = vsnprintf(&scratch, sizeof (scratch), fmt, ap);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   108
        va_end(ap);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   109
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   110
        char *failstr = (char *) Malloc(ctx, len + 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   111
        if (failstr != NULL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   112
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   113
            va_start(ap, fmt);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   114
            vsnprintf(failstr, len + 1, fmt, ap);  // rebuild it.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   115
            va_end(ap);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   116
            ctx->failstr = failstr;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   117
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   118
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   119
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   120
    return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   121
} // failf
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   122
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   123
static inline int fail(Context *ctx, const char *reason)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   124
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   125
    return failf(ctx, "%s", reason);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   126
} // fail
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   127
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   128
static inline int isfail(const Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   129
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   130
    return (ctx->failstr != NULL);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   131
} // isfail
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   132
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   133
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   134
// Shader model version magic...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   135
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   136
static inline uint32 ver_ui32(const uint8 major, const uint8 minor)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   137
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   138
    return ( (((uint32) major) << 16) | (((minor) == 0xFF) ? 0 : (minor)) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   139
} // version_ui32
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   140
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   141
static inline int shader_version_atleast(const Context *ctx, const uint8 maj,
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   142
                                         const uint8 min)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   143
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   144
    return (ver_ui32(ctx->major_ver, ctx->minor_ver) >= ver_ui32(maj, min));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   145
} // shader_version_atleast
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   146
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   147
static inline int shader_is_pixel(const Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   148
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   149
    return (ctx->shader_type == MOJOSHADER_TYPE_PIXEL);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   150
} // shader_is_pixel
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   151
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   152
static inline int shader_is_vertex(const Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   153
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   154
    return (ctx->shader_type == MOJOSHADER_TYPE_VERTEX);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   155
} // shader_is_vertex
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   156
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   157
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   158
static int ui32fromstr(const char *str, uint32 *ui32)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   159
{
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   160
    //*ui32 = (uint32) atoi(minstr);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   161
    char *endptr = NULL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   162
    const long val = strtol(str, &endptr, 10);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   163
    *ui32 = (uint32) val;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   164
    return ((val >= 0) && (*str != '\0') && (*endptr == '\0'));
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   165
} // ui32fromstr
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   166
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   167
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   168
static void output_token_noswap(Context *ctx, const uint32 token)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   169
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   170
    if (isfail(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   171
        return;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   172
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   173
    if (ctx->output_len >= ctx->output_allocation)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   174
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   175
        const size_t output_alloc_bump = 1024;  // that's tokens, not bytes.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   176
        const size_t newsize = ctx->output_allocation + output_alloc_bump;
486
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   177
        void *ptr;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   178
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   179
        ptr = Malloc(ctx, newsize * sizeof (uint32));
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   180
        if (ptr == NULL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   181
            return;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   182
        if (ctx->output_len > 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   183
            memcpy(ptr, ctx->output, ctx->output_len * sizeof (uint32));
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   184
        Free(ctx, ctx->output);
486
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   185
        ctx->output = (uint32 *) ptr;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   186
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   187
        ptr = Malloc(ctx, newsize * sizeof (uint32));
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   188
        if (ptr == NULL)
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   189
            return;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   190
        if (ctx->output_len > 0)
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   191
            memcpy(ptr, ctx->token_to_line, ctx->output_len * sizeof (uint32));
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   192
        Free(ctx, ctx->token_to_line);
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   193
        ctx->token_to_line = (uint32 *) ptr;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   194
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   195
        ctx->output_allocation = newsize;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   196
    } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   197
486
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   198
    ctx->output[ctx->output_len] = token;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   199
    ctx->token_to_line[ctx->output_len] = ctx->linenum;
45efac751027 Added error_position to assembly results.
Ryan C. Gordon <icculus@icculus.org>
parents: 485
diff changeset
   200
    ctx->output_len++;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   201
} // output_token_noswap
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   202
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   203
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   204
static inline void output_token(Context *ctx, const uint32 token)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   205
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   206
    output_token_noswap(ctx, SWAP32(token));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   207
} // output_token
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   208
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   209
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   210
static void output_comment_bytes(Context *ctx, const uint8 *buf, size_t len)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   211
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   212
    if (len > (0xFFFF * 4))  // length is stored as token count, in 16 bits.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   213
        fail(ctx, "Comment field is too big");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   214
    else if (!isfail(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   215
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   216
        const uint32 tokencount = (len / 4) + ((len % 4) ? 1 : 0);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   217
        output_token(ctx, 0xFFFE | (tokencount << 16));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   218
        while (len >= 4)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   219
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   220
            output_token_noswap(ctx, *((const uint32 *) buf));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   221
            len -= 4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   222
            buf += 4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   223
        } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   224
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   225
        if (len > 0)  // handle spillover...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   226
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   227
            union { uint8 ui8[4]; uint32 ui32; } overflow;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   228
            overflow.ui32 = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   229
            memcpy(overflow.ui8, buf, len);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   230
            output_token_noswap(ctx, overflow.ui32);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   231
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   232
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   233
} // output_comment_bytes
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   234
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   235
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   236
static inline void output_comment_string(Context *ctx, const char *str)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   237
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   238
    output_comment_bytes(ctx, (const uint8 *) str, strlen(str));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   239
} // output_comment_string
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   240
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   241
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   242
static int _tokenize(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   243
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   244
    int idx = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   245
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   246
    if (isfail(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   247
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   248
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   249
    if (ctx->pushedback)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   250
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   251
        ctx->pushedback = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   252
        return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   253
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   254
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   255
    if (ctx->on_endline)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   256
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   257
        ctx->on_endline = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   258
        ctx->linenum++;  // passed a newline, update.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   259
    } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   260
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   261
    while (1)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   262
    {
477
e8c74c310a11 Added a FIXME.
Ryan C. Gordon <icculus@icculus.org>
parents: 472
diff changeset
   263
        // !!! FIXME: carefully crafted (but legal) comments can trigger this.
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   264
        if (idx >= sizeof (ctx->token))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   265
            return fail(ctx, "buffer overflow");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   266
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   267
        char ch = *ctx->source;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   268
        if (ch == '\t')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   269
            ch = ' ';  // collapse tabs into single spaces.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   270
        else if (ch == '\r')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   271
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   272
            if (ctx->source[1] == '\n')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   273
               continue;  // ignore '\r' if this is "\r\n" ...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   274
            ch = '\n';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   275
        } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   276
478
af4bfa5d615c Some basic tokenizer logic fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 477
diff changeset
   277
        if ((ch >= '0') && (ch <= '9'))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   278
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   279
            // starting a number, but rest of current token was not number.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   280
            if ((idx > 0) && ((ctx->prevchar < '0') || (ctx->prevchar > '9')))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   281
            {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   282
                ctx->token[idx++] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   283
                return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   284
            } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   285
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   286
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   287
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   288
            // starting a non-number, but rest of current token was numbers.
478
af4bfa5d615c Some basic tokenizer logic fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 477
diff changeset
   289
            if ((idx > 0) && ((ctx->prevchar >= '0') && (ctx->prevchar <= '9')))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   290
            {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   291
                ctx->token[idx++] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   292
                return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   293
            } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   294
        } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   295
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   296
        switch (ch)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   297
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   298
            case '/':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   299
            case ';':  // !!! FIXME: comment, right?
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   300
                if (idx != 0)  // finish off existing token.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   301
                    ctx->token[idx] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   302
                else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   303
                {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   304
                    ctx->token[idx++] = ch;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   305
                    ctx->source++;
478
af4bfa5d615c Some basic tokenizer logic fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 477
diff changeset
   306
                    if ((ch == '/') && (*ctx->source == '/'))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   307
                    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   308
                        ctx->token[idx++] = '/';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   309
                        ctx->source++;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   310
                    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   311
                    ctx->token[idx++] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   312
                } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   313
                return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   314
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   315
            case ' ':
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   316
                if (ctx->prevchar == ' ')
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   317
                    break;   // multiple whitespace collapses into one.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   318
                // intentional fall-through...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   319
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   320
            case '_':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   321
            case '[':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   322
            case ']':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   323
            case '(':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   324
            case ')':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   325
            case '!':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   326
            case '+':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   327
            case '-':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   328
            case ',':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   329
            case '.':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   330
            case '\n':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   331
                if (idx != 0)  // finish off existing token.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   332
                    ctx->token[idx] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   333
                else  // this is a token in itself.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   334
                {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   335
                    if (ch == '\n')
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   336
                        ctx->on_endline = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   337
                    ctx->source++;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   338
                    ctx->token[idx++] = ch;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   339
                    ctx->token[idx++] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   340
                } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   341
                return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   342
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   343
            case '\0':
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   344
                ctx->token[idx] = '\0';
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   345
                if (idx != 0)  // had any chars? It's a token.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   346
                    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   347
                return END_OF_STREAM;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   348
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
            default:
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   350
                ctx->source++;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
                ctx->token[idx++] = ch;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   352
                break;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
        } // switch
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   354
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   355
        ctx->prevchar = ch;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   357
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   358
    return fail(ctx, "???");  // shouldn't hit this.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   359
} // _tokenize
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   360
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   361
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
static inline int tokenize(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   364
    const int rc = _tokenize(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   365
    #if DEBUG_TOKENIZER
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   366
    printf("TOKENIZE: %s '%s'\n",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   367
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   368
           (rc == FAIL) ? "FAIL" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   369
           (rc == NOFAIL) ? "NOFAIL" : "???",
495
93ede2fba3c6 Made debug output more readable.
Ryan C. Gordon <icculus@icculus.org>
parents: 492
diff changeset
   370
           (ctx->token[0] == '\n') ? "\\n" : ctx->token);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   371
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   372
    return rc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   373
} // tokenize
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   374
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   375
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   376
static inline int pushback(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   378
    #if DEBUG_TOKENIZER
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
    printf("PUSHBACK\n");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   382
    if (ctx->pushedback)
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   383
        return fail(ctx, "BUG: Double pushback in parser");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
        ctx->pushedback = 1;
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   386
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   387
    return NOFAIL;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
} // pushback
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
static int nexttoken(Context *ctx, const int ignoreeol,
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
                     const int ignorewhitespace, const int eolok,
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
                     const int eosok)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
    int rc = NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   397
    while ((rc = tokenize(ctx)) == NOFAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
        if (strcmp(ctx->token, "\n") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
            if (ignoreeol)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
            else if (!eolok)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   404
                return fail(ctx, "Unexpected EOL");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   405
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   406
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
        else if (strcmp(ctx->token, " ") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   409
            if (ignorewhitespace)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
        } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   412
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
        // skip comments...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
        else if ((strcmp(ctx->token, "//") == 0) || (strcmp(ctx->token, ";") == 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   416
            while ((rc = tokenize(ctx)) == NOFAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   417
            {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   418
                if (strcmp(ctx->token, "\n") == 0)
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   419
                {
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   420
                    pushback(ctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   421
                    break;
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   422
                } // if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   423
            } // while
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   424
            continue;  // pick up from newline, go again.
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   427
        break;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   428
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   429
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
    #if DEBUG_TOKENIZER
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
    printf("NEXTTOKEN: %s '%s'\n",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
           (rc == FAIL) ? "FAIL" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
           (rc == NOFAIL) ? "NOFAIL" : "???",
495
93ede2fba3c6 Made debug output more readable.
Ryan C. Gordon <icculus@icculus.org>
parents: 492
diff changeset
   435
           (ctx->token[0] == '\n') ? "\\n" : ctx->token);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
    if ((rc == END_OF_STREAM) && (!eosok))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
        return fail(ctx, "Unexpected EOF");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   441
    return rc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
} // nexttoken
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
static int require_endline(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
    const int rc = nexttoken(ctx, 0, 1, 1, 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
    if (rc == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
    else if (rc == END_OF_STREAM)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
        return NOFAIL;  // we'll call this an EOL.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   452
    else if (strcmp(ctx->token, "\n") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
        return fail(ctx, "Endline expected");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
} // require_endline
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   458
static int require_comma(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
{
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   460
    const int rc = nexttoken(ctx, 0, 1, 0, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   461
    if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   462
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   463
    else if (strcmp(ctx->token, ",") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   464
        return fail(ctx, "Comma expected");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
    return NOFAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   466
} // require_comma
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
static int parse_register_name(Context *ctx, RegisterType *rtype, int *rnum)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
    // !!! FIXME: some of these registers are only valid for some shader types.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
    int neednum = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
    int regnum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
    const char *t = ctx->token;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
    RegisterType regtype = REG_TYPE_TEMP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
    if (strcasecmp(t, "r") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
        regtype = REG_TYPE_TEMP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
    else if (strcasecmp(t, "v") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
        regtype = REG_TYPE_INPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
    else if (strcasecmp(t, "c") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
        regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
    else if (strcasecmp(t, "i") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
        regtype = REG_TYPE_CONSTINT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   487
    else if (strcasecmp(t, "b") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
        regtype = REG_TYPE_CONSTBOOL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
    else if (strcasecmp(t, "oC") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
        regtype = REG_TYPE_COLOROUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
    else if (strcasecmp(t, "s") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
        regtype = REG_TYPE_SAMPLER;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
    else if (strcasecmp(t, "oD") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
        regtype = REG_TYPE_ATTROUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
    else if (strcasecmp(t, "l") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
        regtype = REG_TYPE_LABEL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   497
    else if (strcasecmp(t, "p") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   498
        regtype = REG_TYPE_PREDICATE;
513
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   499
    else if (strcasecmp(t, "oDepth") == 0)
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   500
    {
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   501
        regtype = REG_TYPE_DEPTHOUT;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   502
        neednum = 0;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   503
    } // else if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   504
    else if (strcasecmp(t, "aL") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   505
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   506
        regtype = REG_TYPE_LOOP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   507
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   508
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   509
    else if (strcasecmp(t, "o") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   510
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   511
        if (!shader_is_vertex(ctx) || !shader_version_atleast(ctx, 3, 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   512
            return fail(ctx, "Output register not valid in this shader type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   513
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   514
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
    else if (strcasecmp(t, "oT") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   516
    {
502
3cb501248990 Fixed logic error in assembler, to decide if oTx registers are available.
Ryan C. Gordon <icculus@icculus.org>
parents: 500
diff changeset
   517
        if (shader_is_vertex(ctx) && shader_version_atleast(ctx, 3, 0))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   518
            return fail(ctx, "Output register not valid in this shader type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   519
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   521
    else if (strcasecmp(t, "a") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   522
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   523
        if (!shader_is_vertex(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
            return fail(ctx, "Address register only valid in vertex shaders.");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   527
    else if (strcasecmp(t, "t") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   529
        if (!shader_is_pixel(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
            return fail(ctx, "Address register only valid in pixel shaders.");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   531
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   533
    else if (strcasecmp(t, "vPos") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   535
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
        regnum = (int) MISCTYPE_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   538
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   539
    else if (strcasecmp(t, "vFace") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   541
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   542
        regnum = (int) MISCTYPE_TYPE_FACE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   543
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   545
    else if (strcasecmp(t, "oPos") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   546
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
        regnum = (int) RASTOUT_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
    else if (strcasecmp(t, "oFog") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
        regnum = (int) RASTOUT_TYPE_FOG;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   557
    else if (strcasecmp(t, "oPts") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   558
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   559
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
        regnum = (int) RASTOUT_TYPE_POINT_SIZE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   561
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
        
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   564
    //case REG_TYPE_TEMPFLOAT16:  // !!! FIXME: don't know this asm string
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   568
        return fail(ctx, "expected register type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   570
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   571
    if (neednum)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
    {
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   573
        // cheat the pushback.
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   574
        const char *origsrc = ctx->source;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   575
        const int origonendline = ctx->on_endline;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   576
        const int origlinenum = ctx->linenum;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   577
        const int origprevchar = ctx->prevchar;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   578
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   579
        if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   580
            return FAIL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   581
        else if (strcmp(ctx->token, "[") == 0)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   582
            neednum = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   583
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   584
        ctx->source = origsrc;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   585
        ctx->on_endline = origonendline;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   586
        ctx->linenum = origlinenum;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   587
        ctx->prevchar = origprevchar;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   588
    } // if
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   589
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   590
    if (neednum)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   591
    {
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   592
        if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   593
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   594
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   595
        uint32 ui32 = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   596
        if (!ui32fromstr(ctx->token, &ui32))
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   597
            return fail(ctx, "Invalid register index");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   598
        regnum = (int) ui32;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
    // split up REG_TYPE_CONST
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
    if (regtype == REG_TYPE_CONST)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
        if (regnum < 2048)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   605
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   606
            regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   607
            regnum -= 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   608
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
        else if (regnum < 4096)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   610
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
            regtype = REG_TYPE_CONST2;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
            regnum -= 2048;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   613
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
        else if (regnum < 6144)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
            regtype = REG_TYPE_CONST3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
            regnum -= 4096;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
        else if (regnum < 8192)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
            regtype = REG_TYPE_CONST4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
            regnum -= 6144;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
            return fail(ctx, "Invalid const register index");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
        } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
    *rtype = regtype;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
    *rnum = regnum;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
} // parse_register_name
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   636
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   637
static int set_result_shift(Context *ctx, DestArgInfo *info, const int val)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   638
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   639
    if (info->result_shift != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   640
        return fail(ctx, "Multiple result shift modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   641
    info->result_shift = val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   642
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   643
} // set_result_shift
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   644
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   645
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   646
static int parse_destination_token(Context *ctx, DestArgInfo *info)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   647
{
510
f4433db86f6e Fixed wrong sizeof for a memset() call.
Ryan C. Gordon <icculus@icculus.org>
parents: 508
diff changeset
   648
    memset(info, '\0', sizeof (DestArgInfo));
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   650
    // See if there are destination modifiers on the instruction itself...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   651
    while (1)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   652
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   653
        if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   654
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   655
        else if (strcmp(ctx->token, " ") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   656
            break;  // done with modifiers.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   657
        else if (strcmp(ctx->token, "_") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   658
            return fail(ctx, "Expected modifier or whitespace");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   659
        else if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   660
            return FAIL;
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   661
        // !!! FIXME: this can be cleaned up when tokenizer is fixed.
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   662
        else if (strcasecmp(ctx->token, "x") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   663
        {
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   664
            if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   665
                return FAIL;
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   666
            else if (strcmp(ctx->token, "2") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   667
                set_result_shift(ctx, info, 0x1);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   668
            else if (strcmp(ctx->token, "4") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   669
                set_result_shift(ctx, info, 0x2);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   670
            else if (strcmp(ctx->token, "8") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   671
                set_result_shift(ctx, info, 0x3);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   672
            else
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   673
                return fail(ctx, "Expected modifier");
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   674
        } // else if
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   675
        // !!! FIXME: this can be cleaned up when tokenizer is fixed.
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   676
        else if (strcasecmp(ctx->token, "d") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   677
        {
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   678
            if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   679
                return FAIL;
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   680
            else if (strcmp(ctx->token, "8") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   681
                set_result_shift(ctx, info, 0xD);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   682
            else if (strcmp(ctx->token, "4") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   683
                set_result_shift(ctx, info, 0xE);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   684
            else if (strcmp(ctx->token, "2") == 0)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   685
                set_result_shift(ctx, info, 0xF);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   686
            else
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   687
                return fail(ctx, "Expected modifier");
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   688
        } // else if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   689
        else if (strcasecmp(ctx->token, "sat") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   690
            info->result_mod |= MOD_SATURATE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   691
        else if (strcasecmp(ctx->token, "pp") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   692
            info->result_mod |= MOD_PP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   693
        else if (strcasecmp(ctx->token, "centroid") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   694
            info->result_mod |= MOD_CENTROID;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   695
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   696
            return fail(ctx, "Expected modifier");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   699
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   700
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   701
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   702
    // !!! FIXME: predicates.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   703
    if (strcmp(ctx->token, "(") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   704
        return fail(ctx, "Predicates unsupported at this time");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   705
    pushback(ctx);  // parse_register_name calls nexttoken().
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   706
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   707
    if (parse_register_name(ctx, &info->regtype, &info->regnum) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   708
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   709
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   710
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   712
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   713
    // !!! FIXME: can dest registers do relative addressing?
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   714
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   715
    if (strcmp(ctx->token, ".") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   717
        info->writemask = 0xF;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   718
        info->writemask0 = info->writemask1 = info->writemask2 = info->writemask3 = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   719
        pushback(ctx);  // no explicit writemask; do full mask.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   721
    else if (scalar_register(ctx->shader_type, info->regtype, info->regnum))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   722
        return fail(ctx, "Writemask specified for scalar register");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   723
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   724
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   725
    else if (ctx->token[0] == '\0')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   726
        return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   727
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   728
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   729
        char *ptr = ctx->token;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   730
        info->writemask0 = info->writemask1 = info->writemask2 = info->writemask3 = 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   731
        if (*ptr == 'x') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   732
        if (*ptr == 'y') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   733
        if (*ptr == 'z') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   734
        if (*ptr == 'w') { info->writemask3 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   735
        if ((ptr == ctx->token) && (shader_is_pixel(ctx)))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   736
        {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   737
            if (*ptr == 'r') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   738
            if (*ptr == 'g') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   739
            if (*ptr == 'b') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   740
            if (*ptr == 'a') { info->writemask3 = 1; ptr++; }
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   741
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   742
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   743
        if (*ptr != '\0')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   744
            return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   745
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   746
        info->writemask = ( ((info->writemask0 & 0x1) << 0) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   747
                            ((info->writemask1 & 0x1) << 1) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   748
                            ((info->writemask2 & 0x1) << 2) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   749
                            ((info->writemask3 & 0x1) << 3) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   750
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   751
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   752
    info->orig_writemask = info->writemask;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   753
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   754
    if (ctx->tokenbufpos >= STATICARRAYLEN(ctx->tokenbuf))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   755
        return fail(ctx, "Too many tokens");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   756
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   757
    ctx->tokenbuf[ctx->tokenbufpos++] =
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   758
            ( ((((uint32) 1)) << 31) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   759
              ((((uint32) info->regnum) & 0x7ff) << 0) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   760
              ((((uint32) info->relative) & 0x1) << 13) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   761
              ((((uint32) info->result_mod) & 0xF) << 20) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   762
              ((((uint32) info->result_shift) & 0xF) << 24) |
500
38ce929323c2 Fixed writemask bits in assembled bytecode.
Ryan C. Gordon <icculus@icculus.org>
parents: 499
diff changeset
   763
              ((((uint32) info->writemask) & 0xF) << 16) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   764
              ((((uint32) info->regtype) & 0x7) << 28) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   765
              ((((uint32) info->regtype) & 0x18) << 8) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   766
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   767
    return 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   768
} // parse_destination_token
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   769
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   770
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   771
static void set_source_mod(Context *ctx, const int negate,
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   772
                           const SourceMod norm, const SourceMod negated,
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   773
                           SourceMod *srcmod)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   774
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   775
    if ( (*srcmod != SRCMOD_NONE) || (negate && (negated == SRCMOD_NONE)) )
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   776
        fail(ctx, "Incompatible source modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   777
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   778
        *srcmod = ((negate) ? negated : norm);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   779
} // set_source_mod
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   780
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   781
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   782
static int parse_source_token_maybe_relative(Context *ctx, const int relok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   783
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   784
    int retval = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   785
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   786
    if (ctx->tokenbufpos >= STATICARRAYLEN(ctx->tokenbuf))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   787
        return fail(ctx, "Too many tokens");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   788
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   789
    // mark this now, so optional relative addressing token is placed second.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   790
    uint32 *token = &ctx->tokenbuf[ctx->tokenbufpos++];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   791
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   792
    SourceMod srcmod = SRCMOD_NONE;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   793
    int negate = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   794
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   795
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   796
    else if (strcmp(ctx->token, "1") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   797
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   798
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   799
            return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   800
        else if (strcmp(ctx->token, "-") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   801
            return fail(ctx, "Unexpected value");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   802
        else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   803
            srcmod = SRCMOD_COMPLEMENT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   804
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   805
    else if (strcmp(ctx->token, "!") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   806
        srcmod = SRCMOD_NOT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   807
    else if (strcmp(ctx->token, "-") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   808
        negate = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   809
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   810
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   811
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   812
    RegisterType regtype;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   813
    int regnum;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   814
    if (parse_register_name(ctx, &regtype, &regnum) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   815
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   816
    else if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   817
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   818
    else if (strcmp(ctx->token, "_") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   819
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   820
    else if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   821
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   822
    else if (strcasecmp(ctx->token, "bias") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   823
        set_source_mod(ctx, negate, SRCMOD_BIAS, SRCMOD_BIASNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   824
    else if (strcasecmp(ctx->token, "bx2") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   825
        set_source_mod(ctx, negate, SRCMOD_SIGN, SRCMOD_SIGNNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   826
    else if (strcasecmp(ctx->token, "x2") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   827
        set_source_mod(ctx, negate, SRCMOD_X2, SRCMOD_X2NEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   828
    else if (strcasecmp(ctx->token, "dz") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   829
        set_source_mod(ctx, negate, SRCMOD_DZ, SRCMOD_NONE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   830
    else if (strcasecmp(ctx->token, "dw") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   831
        set_source_mod(ctx, negate, SRCMOD_DW, SRCMOD_NONE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   832
    else if (strcasecmp(ctx->token, "abs") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   833
        set_source_mod(ctx, negate, SRCMOD_ABS, SRCMOD_ABSNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   834
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   835
        return fail(ctx, "Invalid source modifier");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   836
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   837
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   838
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   839
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   840
    uint32 relative = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   841
    if (strcmp(ctx->token, "[") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   842
        pushback(ctx);  // not relative addressing?
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   843
    else if (!relok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   844
        return fail(ctx, "Relative addressing not permitted here.");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   845
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   846
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   847
        const int rc = parse_source_token_maybe_relative(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   848
        if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   849
            return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   850
        retval += rc;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   851
        relative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   852
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   853
            return FAIL;
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   854
        else if (strcmp(ctx->token, "+") != 0)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   855
            pushback(ctx);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   856
        else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   857
            return FAIL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   858
        else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   859
        {
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   860
            if (regnum != 0)  // !!! FIXME: maybe c3[a0.x + 5] is legal and becomes c[a0.x + 8] ?
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   861
                fail(ctx, "Relative addressing with explicit register number.");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   862
            uint32 ui32 = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   863
            if (!ui32fromstr(ctx->token, &ui32))
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   864
                return fail(ctx, "Invalid relative addressing offset");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   865
            regnum += (int) ui32;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   866
        } // else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   867
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   868
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   869
            return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   870
        else if (strcmp(ctx->token, "]") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   871
            return fail(ctx, "Expected ']'");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   872
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   873
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   874
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   875
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   876
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   877
    uint32 swizzle = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   878
    if (strcmp(ctx->token, ".") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   879
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   880
        swizzle = 0xE4;  // 0xE4 == 11100100 ... 0 1 2 3. No swizzle.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   881
        pushback(ctx);  // no explicit writemask; do full mask.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   882
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   883
    else if (scalar_register(ctx->shader_type, regtype, regnum))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   884
        return fail(ctx, "Swizzle specified for scalar register");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   885
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   886
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   887
    else if (ctx->token[0] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   888
        return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   889
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   890
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   891
        // deal with shortened form (.x = .xxxx, etc).
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   892
        if (ctx->token[1] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   893
            ctx->token[1] = ctx->token[2] = ctx->token[3] = ctx->token[0];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   894
        else if (ctx->token[2] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   895
            ctx->token[2] = ctx->token[3] = ctx->token[1];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   896
        else if (ctx->token[3] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   897
            ctx->token[3] = ctx->token[2];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   898
        else if (ctx->token[4] != '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   899
            return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   900
        ctx->token[4] = '\0';
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   901
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   902
        uint32 val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   903
        int saw_xyzw = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   904
        int saw_rgba = 0;
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   905
        int i;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   906
        for (i = 0; i < 4; i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   907
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   908
            const int component = (int) ctx->token[i];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   909
            switch (component)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   910
            {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   911
                case 'x': val = 0; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   912
                case 'y': val = 1; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   913
                case 'z': val = 2; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   914
                case 'w': val = 3; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   915
                case 'r': val = 0; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   916
                case 'g': val = 1; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   917
                case 'b': val = 2; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   918
                case 'a': val = 3; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   919
                default: return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   920
            } // switch
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   921
            swizzle |= (val << (i * 2));
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   922
        } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   923
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   924
        if (saw_xyzw && saw_rgba)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   925
            return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   926
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   927
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   928
    *token = ( ((((uint32) 1)) << 31) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   929
               ((((uint32) regnum) & 0x7ff) << 0) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   930
               ((((uint32) relative) & 0x1) << 13) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   931
               ((((uint32) swizzle) & 0xFF) << 16) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   932
               ((((uint32) srcmod) & 0xF) << 24) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   933
               ((((uint32) regtype) & 0x7) << 28) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   934
               ((((uint32) regtype) & 0x18) << 8) );
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   935
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   936
    return retval;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   937
} // parse_source_token_maybe_relative
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   938
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   939
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   940
static inline int parse_source_token(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   941
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   942
    return parse_source_token_maybe_relative(ctx, 1);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   943
} // parse_source_token
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   944
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   945
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   946
static int parse_args_NULL(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   947
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   948
    return (isfail(ctx) ? FAIL : 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   949
} // parse_args_NULL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   950
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   951
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   952
static int parse_num(Context *ctx, const int floatok, uint32 *token)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   953
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   954
    int32 negative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   955
    union { float f; int32 si32; uint32 ui32; } cvt;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   956
    cvt.si32 = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   957
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   958
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   959
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   960
    else if (strcmp(ctx->token, "-") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   961
        negative = -1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   962
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   963
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   964
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   965
    uint32 val = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   966
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   967
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   968
    else if (!ui32fromstr(ctx->token, &val))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   969
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   970
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   971
    uint32 fraction = 0;
488
1a318d011c00 Handle endlines on DEF statements.
Ryan C. Gordon <icculus@icculus.org>
parents: 487
diff changeset
   972
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   973
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   974
    else if (strcmp(ctx->token, ".") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   975
        pushback(ctx);  // whole number
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   976
    else if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   977
        return fail(ctx, "Expected whole number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   978
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   979
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   980
    else if (!ui32fromstr(ctx->token, &fraction))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   981
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   982
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   983
    uint32 exponent = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   984
    int negexp = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   985
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   986
        return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   987
    else if (strcmp(ctx->token, "e") != 0)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   988
        pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   989
    else if (!floatok)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   990
        return fail(ctx, "Exponent on whole number");  // !!! FIXME: illegal?
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   991
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   992
        return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   993
    else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   994
    {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   995
        if (strcmp(ctx->token, "-") != 0)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   996
            pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   997
        else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   998
            negexp = 1;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   999
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1000
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1001
            return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1002
        else if (!ui32fromstr(ctx->token, &exponent))
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1003
            return fail(ctx, "Expected exponent");
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1004
    } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1005
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1006
    if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1007
        cvt.si32 = ((int32) val) * negative;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1008
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1009
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1010
        // !!! FIXME: this is lame.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1011
        char buf[128];
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1012
        snprintf(buf, sizeof (buf), "%s%u.%u", (negative < 0) ? "-" : "",
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1013
                 (uint) val, (uint) fraction);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1014
        sscanf(buf, "%f", &cvt.f);
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1015
        cvt.f *= (float) negative;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1016
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1017
        if (exponent)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1018
        {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1019
            int i;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1020
            if (negexp)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1021
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1022
                for (i = 0; i > exponent; i--)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1023
                    cvt.f /= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1024
            } // if
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1025
            else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1026
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1027
                for (i = 0; i < exponent; i++)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1028
                    cvt.f *= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1029
            } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1030
        } // if
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1031
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1032
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1033
    *token = cvt.ui32;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1034
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1035
} // parse_num
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1036
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1037
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1038
static int parse_args_DEFx(Context *ctx, const int isflt)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1039
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1040
    if (parse_destination_token(ctx, &ctx->dest_arg) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1041
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1042
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1043
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1044
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1045
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1046
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1047
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1048
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1049
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1050
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1051
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1052
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1053
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1054
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1055
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1056
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1057
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1058
    return 6;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1059
} // parse_args_DEFx
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1060
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1061
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1062
static int parse_args_DEF(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1063
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1064
    return parse_args_DEFx(ctx, 1);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1065
} // parse_args_DEF
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1066
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1067
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1068
static int parse_args_DEFI(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1069
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1070
    return parse_args_DEFx(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1071
} // parse_args_DEFI
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1072
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1073
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1074
static int parse_args_DEFB(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1075
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1076
    if (parse_destination_token(ctx, &ctx->dest_arg) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1077
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1078
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1079
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1080
    else if (strcmp(ctx->token, ",") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1081
        return fail(ctx, "Expected ','");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1082
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1083
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1084
    else if (strcasecmp(ctx->token, "true") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1085
        ctx->tokenbuf[ctx->tokenbufpos++] = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1086
    else if (strcasecmp(ctx->token, "false") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1087
        ctx->tokenbuf[ctx->tokenbufpos++] = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1088
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1089
        return fail(ctx, "Expected 'true' or 'false'");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1090
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1091
} // parse_args_DEFB
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1092
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1093
504
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1094
static int parse_dcl_usage(Context *ctx, uint32 *val, int *issampler)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1095
{
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1096
    int i;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1097
    static const char *samplerusagestrs[] = { "2d", "cube", "volume" };
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1098
    static const char *usagestrs[] = {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1099
        "position", "blendweight", "blendindices", "normal", "psize",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1100
        "texcoord", "tangent", "binormal", "tessfactor", "positiont",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1101
        "color", "fog", "depth", "sample"
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1102
    };
514
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1103
    static const char *ignorestrs[] = { "pp", "centroid", "saturate" };
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1104
504
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1105
    // !!! FIXME: we need to clean this out in the tokenizer.
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1106
    char token[sizeof (ctx->token)];
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1107
    strcpy(token, ctx->token);
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1108
    if (strcmp(token, "2") == 0)  // "2d" is two tokens.
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1109
    {
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1110
        if (nexttoken(ctx, 0, 0, 1, 1) == FAIL)
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1111
            return FAIL;
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1112
        else if (strcasecmp(ctx->token, "d") != 0)
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1113
            pushback(ctx);
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1114
        else
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1115
            strcpy(token, "2d");
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1116
    } // if
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1117
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1118
    for (i = 0; i < STATICARRAYLEN(usagestrs); i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1119
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1120
        if (strcasecmp(usagestrs[i], token) == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1121
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1122
            *issampler = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1123
            *val = i;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1124
            return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1125
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1126
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1127
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1128
    for (i = 0; i < STATICARRAYLEN(samplerusagestrs); i++)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1129
    {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1130
        if (strcasecmp(samplerusagestrs[i], token) == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1131
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1132
            *issampler = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1133
            *val = i + 2;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1134
            return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1135
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1136
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1137
514
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1138
    // !!! FIXME: this probably isn't the smartest way to handle this.
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1139
    *issampler = 0;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1140
    *val = 0;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1141
    for (i = 0; i < STATICARRAYLEN(ignorestrs); i++)
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1142
    {
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1143
        if (strcasecmp(ignorestrs[i], token) == 0)
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1144
        {
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1145
            ctx->source -= strlen(token);  // !!! FIXME: hack to move back
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1146
            strcpy(ctx->token, "_");  // !!! FIXME: hack to move back
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1147
            pushback(ctx);  // !!! FIXME: hack to move back
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1148
            return NOFAIL;  // if you have "dcl_pp", then "_pp" isn't a usage.
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1149
        } // if
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
  1150
    } // for
ba913834b491 The parse_args_DCL fiasco continues.