mojoshader_assembler.c
author Ryan C. Gordon <icculus@icculus.org>
Wed, 10 Nov 2010 00:52:01 -0500
changeset 946 16fec3a3f687
parent 945 f00ea3986db8
child 947 16af6e2b2ada
permissions -rw-r--r--
Technical debt: cleaned up things in the assembler that should've used Buffer.
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/**
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 * MojoShader; generate shader programs from bytecode of compiled
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 *  Direct3D shaders.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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// !!! FIXME: this should probably use a formal grammar and not a hand-written
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// !!! FIXME:  pile of C code.
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#define __MOJOSHADER_INTERNAL__ 1
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#include "mojoshader_internal.h"
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#if !SUPPORT_PROFILE_BYTECODE
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#error Shader assembler needs bytecode profile. Fix your build.
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#endif
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#if DEBUG_ASSEMBLER_PARSER
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    #define print_debug_token(token, len, val) \
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        MOJOSHADER_print_debug_token("ASSEMBLER", token, len, val)
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#else
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    #define print_debug_token(token, len, val)
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#endif
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typedef struct SourcePos
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{
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    const char *filename;
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    uint32 line;
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} SourcePos;
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// Context...this is state that changes as we assemble a shader...
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typedef struct Context
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{
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    int isfail;
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    int out_of_memory;
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    MOJOSHADER_malloc malloc;
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    MOJOSHADER_free free;
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    void *malloc_data;
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    ErrorList *errors;
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    Preprocessor *preprocessor;
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    MOJOSHADER_parsePhase parse_phase;
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    MOJOSHADER_shaderType shader_type;
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    uint8 major_ver;
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    uint8 minor_ver;
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    int pushedback;
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    const char *token;      // assembler token!
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    unsigned int tokenlen;  // assembler token!
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    Token tokenval;         // assembler token!
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    uint32 version_token;   // bytecode token!
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    uint32 tokenbuf[16];    // bytecode tokens!
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    int tokenbufpos;        // bytecode tokens!
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    DestArgInfo dest_arg;
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    Buffer *output;
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    Buffer *token_to_source;
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    Buffer *ctab;
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} Context;
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// !!! FIXME: cut and paste between every damned source file follows...
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// !!! FIXME: We need to make some sort of ContextBase that applies to all
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// !!! FIXME:  files and move this stuff to mojoshader_common.c ...
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// Convenience functions for allocators...
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static inline void out_of_memory(Context *ctx)
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{
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    ctx->isfail = ctx->out_of_memory = 1;
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} // out_of_memory
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static inline void *Malloc(Context *ctx, const size_t len)
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{
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    void *retval = ctx->malloc((int) len, ctx->malloc_data);
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    if (retval == NULL)
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        out_of_memory(ctx);
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    return retval;
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} // Malloc
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static inline char *StrDup(Context *ctx, const char *str)
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{
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    char *retval = (char *) Malloc(ctx, strlen(str) + 1);
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    if (retval != NULL)
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        strcpy(retval, str);
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    return retval;
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} // StrDup
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static inline void Free(Context *ctx, void *ptr)
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{
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    ctx->free(ptr, ctx->malloc_data);
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} // Free
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static void *MallocBridge(int bytes, void *data)
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{
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    return Malloc((Context *) data, (size_t) bytes);
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} // MallocBridge
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static void FreeBridge(void *ptr, void *data)
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{
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    Free((Context *) data, ptr);
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} // FreeBridge
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// !!! FIXME: move the errpos calculation into Context, and we can move this
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// !!! FIXME:  to mojoshader_common.c
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static void failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
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static void failf(Context *ctx, const char *fmt, ...)
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{
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    const char *fname = NULL;
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    unsigned int linenum = 0;
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    ctx->isfail = 1;
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    if (ctx->out_of_memory)
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        return;
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    int errpos = 0;
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    switch (ctx->parse_phase)
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    {
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        case MOJOSHADER_PARSEPHASE_NOTSTARTED:
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            errpos = -2;
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            break;
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        case MOJOSHADER_PARSEPHASE_WORKING:
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            fname = preprocessor_sourcepos(ctx->preprocessor, &linenum);
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            errpos = (int) linenum;
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            break;
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        case MOJOSHADER_PARSEPHASE_DONE:
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            errpos = -1;
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            break;
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        default:
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            assert(0 && "Unexpected value");
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            return;
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    } // switch
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    va_list ap;
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    va_start(ap, fmt);
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    errorlist_add_va(ctx->errors, fname, errpos, fmt, ap);
542
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    va_end(ap);
465
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} // failf
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542
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static inline void fail(Context *ctx, const char *reason)
465
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{
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    failf(ctx, "%s", reason);
465
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} // fail
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static inline int isfail(const Context *ctx)
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{
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    return ctx->isfail;
465
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} // isfail
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// Shader model version magic...
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static inline uint32 ver_ui32(const uint8 major, const uint8 minor)
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{
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    return ( (((uint32) major) << 16) | (((minor) == 0xFF) ? 0 : (minor)) );
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} // version_ui32
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static inline int shader_version_atleast(const Context *ctx, const uint8 maj,
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                                         const uint8 min)
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{
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    return (ver_ui32(ctx->major_ver, ctx->minor_ver) >= ver_ui32(maj, min));
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} // shader_version_atleast
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static inline int shader_is_pixel(const Context *ctx)
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{
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    return (ctx->shader_type == MOJOSHADER_TYPE_PIXEL);
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} // shader_is_pixel
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static inline int shader_is_vertex(const Context *ctx)
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{
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    return (ctx->shader_type == MOJOSHADER_TYPE_VERTEX);
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} // shader_is_vertex
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static inline void pushback(Context *ctx)
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{
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    #if DEBUG_ASSEMBLER_PARSER
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    printf("ASSEMBLER PUSHBACK\n");
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    #endif
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    assert(!ctx->pushedback);
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    ctx->pushedback = 1;
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} // pushback
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562
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static Token nexttoken(Context *ctx)
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{
562
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    if (ctx->pushedback)
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        ctx->pushedback = 0;
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    else
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    {
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        while (1)
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        {
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            ctx->token = preprocessor_nexttoken(ctx->preprocessor,
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                                                &ctx->tokenlen,
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                                                &ctx->tokenval);
562
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690
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            if (preprocessor_outofmemory(ctx->preprocessor))
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            {
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                out_of_memory(ctx);
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                ctx->tokenval = TOKEN_EOI;
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                ctx->token = NULL;
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                ctx->tokenlen = 0;
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                break;
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            } // if
562
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840
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            else if (ctx->tokenval == TOKEN_BAD_CHARS)
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            {
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                fail(ctx, "Bad characters in source file");
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                continue;
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   211
            } // else if
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   212
690
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            else if (ctx->tokenval == TOKEN_PREPROCESSING_ERROR)
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            {
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   215
                fail(ctx, ctx->token);
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   216
                continue;
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   217
            } // else if
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   218
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   219
            break;
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   220
        } // while
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   221
    } // else
562
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   222
587
202354e004fc Unified some cut-and-paste code.
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   223
    print_debug_token(ctx->token, ctx->tokenlen, ctx->tokenval);
690
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   224
    return ctx->tokenval;
562
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   225
} // nexttoken
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   226
536
5af65fe6e917 Allow multiple errors from parsing.
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   227
465
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static void output_token_noswap(Context *ctx, const uint32 token)
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   229
{
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   230
    if (!isfail(ctx))
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diff changeset
   231
    {
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   232
        buffer_append(ctx->output, &token, sizeof (token));
486
45efac751027 Added error_position to assembly results.
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diff changeset
   233
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   234
        // We only need a list of these that grows throughout processing, and
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        //  is flattened for reference at the end of the run, so we use a
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   236
        //  Buffer. It's sneaky!
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   237
        unsigned int pos = 0;
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   238
        const char *fname = preprocessor_sourcepos(ctx->preprocessor, &pos);
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   239
        SourcePos srcpos;
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   240
        memset(&srcpos, '\0', sizeof (SourcePos));
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   241
        srcpos.line = pos;
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   242
        srcpos.filename = fname;  // cached in preprocessor!
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   243
        buffer_append(ctx->token_to_source, &srcpos, sizeof (SourcePos));
470
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diff changeset
   244
    } // if
465
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   245
} // output_token_noswap
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   246
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   247
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   248
static inline void output_token(Context *ctx, const uint32 token)
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   249
{
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   250
    output_token_noswap(ctx, SWAP32(token));
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   251
} // output_token
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   252
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   253
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   254
static void output_comment_bytes(Context *ctx, const uint8 *buf, size_t len)
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   255
{
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   256
    if (len > (0xFFFF * 4))  // length is stored as token count, in 16 bits.
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   257
        fail(ctx, "Comment field is too big");
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   258
    else if (!isfail(ctx))
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   259
    {
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   260
        const uint32 tokencount = (len / 4) + ((len % 4) ? 1 : 0);
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diff changeset
   261
        output_token(ctx, 0xFFFE | (tokencount << 16));
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diff changeset
   262
        while (len >= 4)
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diff changeset
   263
        {
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   264
            output_token_noswap(ctx, *((const uint32 *) buf));
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diff changeset
   265
            len -= 4;
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diff changeset
   266
            buf += 4;
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diff changeset
   267
        } // while
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   268
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   269
        if (len > 0)  // handle spillover...
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diff changeset
   270
        {
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diff changeset
   271
            union { uint8 ui8[4]; uint32 ui32; } overflow;
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   272
            overflow.ui32 = 0;
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parents:
diff changeset
   273
            memcpy(overflow.ui8, buf, len);
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diff changeset
   274
            output_token_noswap(ctx, overflow.ui32);
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diff changeset
   275
        } // if
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diff changeset
   276
    } // else if
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diff changeset
   277
} // output_comment_bytes
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parents:
diff changeset
   278
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diff changeset
   279
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   280
static inline void output_comment_string(Context *ctx, const char *str)
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diff changeset
   281
{
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diff changeset
   282
    output_comment_bytes(ctx, (const uint8 *) str, strlen(str));
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diff changeset
   283
} // output_comment_string
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diff changeset
   284
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diff changeset
   285
470
7d84d3452125 Bunch More Work on the assembler.
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diff changeset
   286
static int require_comma(Context *ctx)
465
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parents:
diff changeset
   287
{
562
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diff changeset
   288
    const Token token = nexttoken(ctx);
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diff changeset
   289
    if (token != ((Token) ','))
542
a56d3bfd2e36 More work on multiple error messages.
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parents: 539
diff changeset
   290
    {
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diff changeset
   291
        fail(ctx, "Comma expected");
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parents: 539
diff changeset
   292
        return 0;
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parents: 539
diff changeset
   293
    } // if
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parents: 539
diff changeset
   294
    return 1;
470
7d84d3452125 Bunch More Work on the assembler.
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parents: 465
diff changeset
   295
} // require_comma
465
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parents:
diff changeset
   296
0a75f98f785b Initial work on assembler. Not even close to done.
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diff changeset
   297
562
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diff changeset
   298
static int check_token_segment(Context *ctx, const char *str)
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diff changeset
   299
{
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diff changeset
   300
    // !!! FIXME: these are case-insensitive, right?
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parents: 558
diff changeset
   301
    const size_t len = strlen(str);
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parents: 558
diff changeset
   302
    if ( (ctx->tokenlen < len) || (strncasecmp(ctx->token, str, len) != 0) )
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parents: 558
diff changeset
   303
        return 0;
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diff changeset
   304
    ctx->token += len;
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parents: 558
diff changeset
   305
    ctx->tokenlen -= len;
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parents: 558
diff changeset
   306
    return 1;
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parents: 558
diff changeset
   307
} // check_token_segment
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parents: 558
diff changeset
   308
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parents: 558
diff changeset
   309
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
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diff changeset
   310
static int check_token(Context *ctx, const char *str)
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diff changeset
   311
{
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diff changeset
   312
    const size_t len = strlen(str);
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parents: 558
diff changeset
   313
    if ( (ctx->tokenlen != len) || (strncasecmp(ctx->token, str, len) != 0) )
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   314
        return 0;
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parents: 558
diff changeset
   315
    ctx->token += len;
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Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   316
    ctx->tokenlen = 0;
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Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   317
    return 1;
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parents: 558
diff changeset
   318
} // check_token
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parents: 558
diff changeset
   319
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parents: 558
diff changeset
   320
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Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   321
static int ui32fromtoken(Context *ctx, uint32 *_val)
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Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   322
{
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   323
    unsigned int i;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
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parents: 558
diff changeset
   324
    for (i = 0; i < ctx->tokenlen; i++)
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Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   325
    {
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parents: 558
diff changeset
   326
        if ((ctx->token[i] < '0') || (ctx->token[i] > '9'))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   327
            break;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   328
    } // for
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parents: 558
diff changeset
   329
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   330
    if (i == 0)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   331
    {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   332
        *_val = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   333
        return 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   334
    } // if
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   335
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   336
    const unsigned int len = i;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   337
    uint32 val = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   338
    uint32 mult = 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   339
    while (i--)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   340
    {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   341
        val += ((uint32) (ctx->token[i] - '0')) * mult;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   342
        mult *= 10;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   343
    } // while
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   344
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   345
    ctx->token += len;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   346
    ctx->tokenlen -= len;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   347
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   348
    *_val = val;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   349
    return 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   350
} // ui32fromtoken
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   351
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   352
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
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
   354
{
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   355
    if (nexttoken(ctx) != TOKEN_IDENTIFIER)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   356
    {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   357
        fail(ctx, "Expected register");
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   358
        return 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   359
    } // if
465
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
    int neednum = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
    int regnum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
    RegisterType regtype = REG_TYPE_TEMP;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   364
573
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   365
    // Watch out for substrings! oDepth must be checked before oD, since
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   366
    //  the latter will match either case.
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   367
    if (check_token_segment(ctx, "oDepth"))
513
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   368
    {
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   369
        regtype = REG_TYPE_DEPTHOUT;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   370
        neednum = 0;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   371
    } // else if
573
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   372
    else if (check_token_segment(ctx, "vFace"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   373
    {
573
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   374
        regtype = REG_TYPE_MISCTYPE;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   375
        regnum = (int) MISCTYPE_TYPE_FACE;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   376
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
    } // else if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   378
    else if (check_token_segment(ctx, "vPos"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
        regnum = (int) MISCTYPE_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   382
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
    } // else if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   384
    else if (check_token_segment(ctx, "oPos"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   387
        regnum = (int) RASTOUT_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
    } // else if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   390
    else if (check_token_segment(ctx, "oFog"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
        regnum = (int) RASTOUT_TYPE_FOG;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
    } // else if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   396
    else if (check_token_segment(ctx, "oPts"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   397
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
        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
   400
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
    } // else if
573
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   402
    else if (check_token_segment(ctx, "aL"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   403
    {
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   404
        regtype = REG_TYPE_LOOP;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   405
        neednum = 0;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   406
    } // else if
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   407
    else if (check_token_segment(ctx, "oC"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   408
        regtype = REG_TYPE_COLOROUT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   409
    else if (check_token_segment(ctx, "oT"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   410
        regtype = REG_TYPE_OUTPUT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   411
    else if (check_token_segment(ctx, "oD"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   412
        regtype = REG_TYPE_ATTROUT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   413
    else if (check_token_segment(ctx, "r"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   414
        regtype = REG_TYPE_TEMP;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   415
    else if (check_token_segment(ctx, "v"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   416
        regtype = REG_TYPE_INPUT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   417
    else if (check_token_segment(ctx, "c"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   418
        regtype = REG_TYPE_CONST;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   419
    else if (check_token_segment(ctx, "i"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   420
        regtype = REG_TYPE_CONSTINT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   421
    else if (check_token_segment(ctx, "b"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   422
        regtype = REG_TYPE_CONSTBOOL;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   423
    else if (check_token_segment(ctx, "s"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   424
        regtype = REG_TYPE_SAMPLER;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   425
    else if (check_token_segment(ctx, "l"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   426
        regtype = REG_TYPE_LABEL;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   427
    else if (check_token_segment(ctx, "p"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   428
        regtype = REG_TYPE_PREDICATE;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   429
    else if (check_token_segment(ctx, "o"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   430
        regtype = REG_TYPE_OUTPUT;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   431
    else if (check_token_segment(ctx, "a"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   432
        regtype = REG_TYPE_ADDRESS;
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   433
    else if (check_token_segment(ctx, "t"))
1cd1d99a79cb Rearrange how we test for register names to avoid substring matches.
Ryan C. Gordon <icculus@icculus.org>
parents: 572
diff changeset
   434
        regtype = REG_TYPE_ADDRESS;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   435
        
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
    //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
   437
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
    {
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   440
        fail(ctx, "expected register type");
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   441
        regtype = REG_TYPE_CONST;
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   442
        regnum = 0;
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   443
        neednum = 0;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
570
af6bb8728f9e Fixed register name parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 567
diff changeset
   446
    // "c[5]" is the same as "c5", so if the token is done, see if next is '['.
af6bb8728f9e Fixed register name parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 567
diff changeset
   447
    if ((neednum) && (ctx->tokenlen == 0))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   449
        if (nexttoken(ctx) == ((Token) '['))
570
af6bb8728f9e Fixed register name parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 567
diff changeset
   450
            neednum = 0;  // don't need a number on register name itself.
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   451
        pushback(ctx);
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   452
    } // if
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   453
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   454
    if (neednum)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   455
    {
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   456
        uint32 ui32 = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   457
        if (!ui32fromtoken(ctx, &ui32))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   458
            fail(ctx, "Invalid register index");
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   459
        regnum = (int) ui32;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   461
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   462
    // split up REG_TYPE_CONST
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
    if (regtype == REG_TYPE_CONST)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
        if (regnum < 2048)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
            regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
            regnum -= 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
        else if (regnum < 4096)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
            regtype = REG_TYPE_CONST2;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
            regnum -= 2048;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
        else if (regnum < 6144)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
            regtype = REG_TYPE_CONST3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
            regnum -= 4096;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
        else if (regnum < 8192)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
            regtype = REG_TYPE_CONST4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
            regnum -= 6144;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
        {
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   487
            fail(ctx, "Invalid const register index");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
        } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
    *rtype = regtype;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
    *rnum = regnum;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   494
    return 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
} // parse_register_name
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   497
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   498
static void set_result_shift(Context *ctx, DestArgInfo *info, const int val)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   499
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   500
    if (info->result_shift != 0)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   501
        fail(ctx, "Multiple result shift modifiers");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   502
    info->result_shift = val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   503
} // set_result_shift
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   504
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   505
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   506
static inline int tokenbuf_overflow(Context *ctx)
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   507
{
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   508
    if ( ctx->tokenbufpos >= ((int) (STATICARRAYLEN(ctx->tokenbuf))) )
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   509
    {
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   510
        fail(ctx, "Too many tokens");
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   511
        return 1;
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   512
    } // if
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   513
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   514
    return 0;
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   515
} // tokenbuf_overflow
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   516
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   517
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   518
static int parse_destination_token(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   519
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   520
    DestArgInfo *info = &ctx->dest_arg;
510
f4433db86f6e Fixed wrong sizeof for a memset() call.
Ryan C. Gordon <icculus@icculus.org>
parents: 508
diff changeset
   521
    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
   522
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   523
    // parse_instruction_token() sets ctx->token to the end of the instruction
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   524
    //  so we can see if there are destination modifiers on the instruction
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   525
    //  itself...
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   526
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   527
    int invalid_modifier = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   528
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   529
    while ((ctx->tokenlen > 0) && (!invalid_modifier))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   531
        if (check_token_segment(ctx, "_x2"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   532
            set_result_shift(ctx, info, 0x1);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   533
        else if (check_token_segment(ctx, "_x4"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   534
            set_result_shift(ctx, info, 0x2);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   535
        else if (check_token_segment(ctx, "_x8"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   536
            set_result_shift(ctx, info, 0x3);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   537
        else if (check_token_segment(ctx, "_d8"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   538
            set_result_shift(ctx, info, 0xD);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   539
        else if (check_token_segment(ctx, "_d4"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   540
            set_result_shift(ctx, info, 0xE);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   541
        else if (check_token_segment(ctx, "_d2"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   542
            set_result_shift(ctx, info, 0xF);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   543
        else if (check_token_segment(ctx, "_sat"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
            info->result_mod |= MOD_SATURATE;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   545
        else if (check_token_segment(ctx, "_pp"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   546
            info->result_mod |= MOD_PP;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   547
        else if (check_token_segment(ctx, "_centroid"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
            info->result_mod |= MOD_CENTROID;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
        else
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   550
            invalid_modifier = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   553
    if (invalid_modifier)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   554
        fail(ctx, "Invalid destination modifier");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
    // !!! FIXME: predicates.
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   557
    if (nexttoken(ctx) == ((Token) '('))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   558
        fail(ctx, "Predicates unsupported at this time");  // !!! FIXME: ...
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   559
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
    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
   561
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   562
    parse_register_name(ctx, &info->regtype, &info->regnum);
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   563
    // parse_register_name() can't check this: dest regs might have modifiers.
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   564
    if (ctx->tokenlen > 0)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   565
        fail(ctx, "invalid register name");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    // !!! 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
   568
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   569
    int invalid_writemask = 0;
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   570
    int implicit_writemask = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   571
    if (nexttoken(ctx) != ((Token) '.'))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
    {
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   573
        implicit_writemask = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
        info->writemask = 0xF;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   575
        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
   576
        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
   577
    } // if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   578
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   579
    // !!! FIXME: Cg generates code with oDepth.z ... this is a bug, I think.
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   580
    //else if (scalar_register(ctx->shader_type, info->regtype, info->regnum))
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   581
    else if ( (scalar_register(ctx->shader_type, info->regtype, info->regnum)) && (info->regtype != REG_TYPE_DEPTHOUT) )
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   582
        fail(ctx, "Writemask specified for scalar register");
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   583
    else if (nexttoken(ctx) != TOKEN_IDENTIFIER)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   584
        invalid_writemask = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   585
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   586
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   587
        char tokenbytes[5] = { '\0', '\0', '\0', '\0', '\0' };
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   588
        const unsigned int tokenlen = ctx->tokenlen;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   589
        memcpy(tokenbytes, ctx->token, ((tokenlen < 4) ? tokenlen : 4));
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   590
        char *ptr = tokenbytes;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   591
720
7b0bbd985de7 You can mix and match "xyzw" and "rgba" writemasks, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 719
diff changeset
   592
        if ((*ptr == 'r') || (*ptr == 'x')) { info->writemask0 = 1; ptr++; }
7b0bbd985de7 You can mix and match "xyzw" and "rgba" writemasks, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 719
diff changeset
   593
        if ((*ptr == 'g') || (*ptr == 'y')) { info->writemask1 = 1; ptr++; }
7b0bbd985de7 You can mix and match "xyzw" and "rgba" writemasks, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 719
diff changeset
   594
        if ((*ptr == 'b') || (*ptr == 'z')) { info->writemask2 = 1; ptr++; }
7b0bbd985de7 You can mix and match "xyzw" and "rgba" writemasks, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 719
diff changeset
   595
        if ((*ptr == 'a') || (*ptr == 'w')) { info->writemask3 = 1; ptr++; }
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   597
        if (*ptr != '\0')
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   598
            invalid_writemask = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
        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
   601
                            ((info->writemask1 & 0x1) << 1) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
                            ((info->writemask2 & 0x1) << 2) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
                            ((info->writemask3 & 0x1) << 3) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   605
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   606
    if (invalid_writemask)
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   607
        fail(ctx, "Invalid writemask");
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   608
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   609
    // !!! FIXME: Cg generates code with oDepth.z ... this is a bug, I think.
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   610
    if (info->regtype == REG_TYPE_DEPTHOUT)
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   611
    {
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   612
        if ( (!implicit_writemask) && ((info->writemask0 + info->writemask1 +
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   613
               info->writemask2 + info->writemask3) > 1) )
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   614
            fail(ctx, "Writemask specified for scalar register");
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   615
    } // if
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   616
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
    info->orig_writemask = info->writemask;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   619
    if (tokenbuf_overflow(ctx))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   620
        return 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
    ctx->tokenbuf[ctx->tokenbufpos++] =
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   623
            ( ((((uint32) 1)) << 31) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
              ((((uint32) info->regnum) & 0x7ff) << 0) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
              ((((uint32) info->relative) & 0x1) << 13) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
              ((((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
   627
              ((((uint32) info->result_shift) & 0xF) << 24) |
500
38ce929323c2 Fixed writemask bits in assembled bytecode.
Ryan C. Gordon <icculus@icculus.org>
parents: 499
diff changeset
   628
              ((((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
   629
              ((((uint32) info->regtype) & 0x7) << 28) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
              ((((uint32) info->regtype) & 0x18) << 8) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
    return 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
} // parse_destination_token
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   636
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
   637
                           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
   638
                           SourceMod *srcmod)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   639
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   640
    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
   641
        fail(ctx, "Incompatible source modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   642
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   643
        *srcmod = ((negate) ? negated : norm);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   644
} // set_source_mod
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   645
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   646
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   647
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
   648
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   649
    int retval = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   650
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   651
    if (tokenbuf_overflow(ctx))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   652
        return 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   653
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   654
    // mark this now, so optional relative addressing token is placed second.
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   655
    uint32 *outtoken = &ctx->tokenbuf[ctx->tokenbufpos++];
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   656
    *outtoken = 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   657
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   658
    SourceMod srcmod = SRCMOD_NONE;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   659
    int negate = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   660
    Token token = nexttoken(ctx);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   661
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   662
    if (token == ((Token) '!'))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   663
        srcmod = SRCMOD_NOT;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   664
    else if (token == ((Token) '-'))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   665
        negate = 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   666
    else if ( (token == TOKEN_INT_LITERAL) && (check_token(ctx, "1")) )
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   667
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   668
        if (nexttoken(ctx) != ((Token) '-'))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   669
            fail(ctx, "Unexpected token");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   670
        else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   671
            srcmod = SRCMOD_COMPLEMENT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   672
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   673
    else
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   674
    {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   675
        pushback(ctx);
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   676
    } // else
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   677
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   678
    RegisterType regtype;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   679
    int regnum;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   680
    parse_register_name(ctx, &regtype, &regnum);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   681
696
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   682
    if (ctx->tokenlen == 0)
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   683
    {
696
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   684
        if (negate)
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   685
            set_source_mod(ctx, negate, SRCMOD_NONE, SRCMOD_NEGATE, &srcmod);
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   686
    } // if
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   687
    else
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   688
    {
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   689
        assert(ctx->tokenlen > 0);
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   690
        if (check_token_segment(ctx, "_bias"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   691
            set_source_mod(ctx, negate, SRCMOD_BIAS, SRCMOD_BIASNEGATE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   692
        else if (check_token_segment(ctx, "_bx2"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   693
            set_source_mod(ctx, negate, SRCMOD_SIGN, SRCMOD_SIGNNEGATE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   694
        else if (check_token_segment(ctx, "_x2"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   695
            set_source_mod(ctx, negate, SRCMOD_X2, SRCMOD_X2NEGATE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   696
        else if (check_token_segment(ctx, "_dz"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   697
            set_source_mod(ctx, negate, SRCMOD_DZ, SRCMOD_NONE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   698
        else if (check_token_segment(ctx, "_dw"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   699
            set_source_mod(ctx, negate, SRCMOD_DW, SRCMOD_NONE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   700
        else if (check_token_segment(ctx, "_abs"))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   701
            set_source_mod(ctx, negate, SRCMOD_ABS, SRCMOD_ABSNEGATE, &srcmod);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   702
        else
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   703
            fail(ctx, "Invalid source modifier");
696
c9e03dc63eb8 Fixed SRCMOD_NEGATE usage when assembling.
Ryan C. Gordon <icculus@icculus.org>
parents: 695
diff changeset
   704
    } // else
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   705
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   706
    uint32 relative = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   707
    if (nexttoken(ctx) != ((Token) '['))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   708
        pushback(ctx);  // not relative addressing?
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   709
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   710
    {
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   711
        if (!relok)
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   712
            fail(ctx, "Relative addressing not permitted here.");
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   713
        else
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   714
            retval++;
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   715
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   716
        parse_source_token_maybe_relative(ctx, 0);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   717
        relative = 1;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   718
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   719
        if (nexttoken(ctx) != ((Token) '+'))
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   720
            pushback(ctx);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   721
        else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   722
        {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   723
            // !!! FIXME: maybe c3[a0.x + 5] is legal and becomes c[a0.x + 8] ?
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   724
            if (regnum != 0)
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   725
                fail(ctx, "Relative addressing with explicit register number.");
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   726
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   727
            uint32 ui32 = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   728
            if ( (nexttoken(ctx) != TOKEN_INT_LITERAL) ||
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   729
                 (!ui32fromtoken(ctx, &ui32)) ||
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   730
                 (ctx->tokenlen != 0) )
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   731
            {
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   732
                fail(ctx, "Invalid relative addressing offset");
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   733
            } // if
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   734
            regnum += (int) ui32;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   735
        } // else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   736
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   737
        if (nexttoken(ctx) != ((Token) ']'))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   738
            fail(ctx, "Expected ']'");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   739
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   740
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   741
    int invalid_swizzle = 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   742
    uint32 swizzle = 0;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   743
    if (nexttoken(ctx) != ((Token) '.'))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   744
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   745
        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
   746
        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
   747
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   748
    else if (scalar_register(ctx->shader_type, regtype, regnum))
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   749
        fail(ctx, "Swizzle specified for scalar register");
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   750
    else if (nexttoken(ctx) != TOKEN_IDENTIFIER)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   751
        invalid_swizzle = 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   752
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   753
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   754
        char tokenbytes[5] = { '\0', '\0', '\0', '\0', '\0' };
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   755
        const unsigned int tokenlen = ctx->tokenlen;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   756
        memcpy(tokenbytes, ctx->token, ((tokenlen < 4) ? tokenlen : 4));
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   757
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   758
        // deal with shortened form (.x = .xxxx, etc).
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   759
        if (tokenlen == 1)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   760
            tokenbytes[1] = tokenbytes[2] = tokenbytes[3] = tokenbytes[0];
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   761
        else if (tokenlen == 2)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   762
            tokenbytes[2] = tokenbytes[3] = tokenbytes[1];
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   763
        else if (tokenlen == 3)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   764
            tokenbytes[3] = tokenbytes[2];
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   765
        else if (tokenlen != 4)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   766
            invalid_swizzle = 1;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   767
        tokenbytes[4] = '\0';
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   768
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   769
        uint32 val = 0;
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   770
        int i;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   771
        for (i = 0; i < 4; i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   772
        {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   773
            const int component = (int) tokenbytes[i];
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   774
            switch (component)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   775
            {
718
08e758f9aae3 Apparently you can mix "xyzw" and "rgba" swizzles, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 716
diff changeset
   776
                case 'r': case 'x': val = 0; break;
08e758f9aae3 Apparently you can mix "xyzw" and "rgba" swizzles, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 716
diff changeset
   777
                case 'g': case 'y': val = 1; break;
08e758f9aae3 Apparently you can mix "xyzw" and "rgba" swizzles, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 716
diff changeset
   778
                case 'b': case 'z': val = 2; break;
08e758f9aae3 Apparently you can mix "xyzw" and "rgba" swizzles, even in vertex shaders.
Ryan C. Gordon <icculus@icculus.org>
parents: 716
diff changeset
   779
                case 'a': case 'w': val = 3; break;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   780
                default: invalid_swizzle = 1; break;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   781
            } // switch
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   782
            swizzle |= (val << (i * 2));
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   783
        } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   784
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   785
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   786
    if (invalid_swizzle)
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   787
        fail(ctx, "Invalid swizzle");
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   788
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   789
    *outtoken = ( ((((uint32) 1)) << 31) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   790
                  ((((uint32) regnum) & 0x7ff) << 0) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   791
                  ((((uint32) relative) & 0x1) << 13) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   792
                  ((((uint32) swizzle) & 0xFF) << 16) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   793
                  ((((uint32) srcmod) & 0xF) << 24) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   794
                  ((((uint32) regtype) & 0x7) << 28) |
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   795
                  ((((uint32) regtype) & 0x18) << 8) );
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   796
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   797
    return retval;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   798
} // parse_source_token_maybe_relative
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   799
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   800
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   801
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
   802
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   803
    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
   804
} // parse_source_token
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   805
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   806
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   807
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
   808
{
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   809
    return 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   810
} // parse_args_NULL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   811
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   812
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   813
static int parse_num(Context *ctx, const int floatok, uint32 *value)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   814
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   815
    union { float f; int32 si32; uint32 ui32; } cvt;
572
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   816
    int negative = 0;
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   817
    Token token = nexttoken(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   818
572
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   819
    if (token == ((Token) '-'))
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   820
    {
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   821
        negative = 1;
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   822
        token = nexttoken(ctx);
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   823
    } // if
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   824
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   825
    if (token == TOKEN_INT_LITERAL)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   826
    {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   827
        int d = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   828
        sscanf(ctx->token, "%d", &d);
572
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   829
        if (floatok)
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   830
            cvt.f = (float) ((negative) ? -d : d);
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   831
        else
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   832
            cvt.si32 = (int32) ((negative) ? -d : d);
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   833
    } // if
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   834
    else if (token == TOKEN_FLOAT_LITERAL)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   835
    {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   836
        if (!floatok)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   837
        {
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   838
            fail(ctx, "Expected whole number");
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   839
            *value = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   840
            return 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   841
        } // if
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   842
        sscanf(ctx->token, "%f", &cvt.f);
572
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   843
        if (negative)
cdc8bb82f7d2 Fixed parse_num().
Ryan C. Gordon <icculus@icculus.org>
parents: 571
diff changeset
   844
            cvt.f = -cvt.f;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   845
    } // if
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   846
    else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   847
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   848
        fail(ctx, "Expected number");
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   849
        *value = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   850
        return 0;
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   851
    } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   852
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   853
    *value = cvt.ui32;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   854
    return 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   855
} // parse_num
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   856
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   857
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   858
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
   859
{
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   860
    parse_destination_token(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   861
    require_comma(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   862
    parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   863
    require_comma(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   864
    parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   865
    require_comma(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   866
    parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   867
    require_comma(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   868
    parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   869
    return 6;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   870
} // parse_args_DEFx
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   871
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   872
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   873
static int parse_args_DEF(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   874
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   875
    return parse_args_DEFx(ctx, 1);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   876
} // parse_args_DEF
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   877
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   878
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   879
static int parse_args_DEFI(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   880
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   881
    return parse_args_DEFx(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   882
} // parse_args_DEFI
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   883
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   884
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   885
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
   886
{
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   887
    parse_destination_token(ctx);
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   888
    require_comma(ctx);
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   889
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   890
    // !!! FIXME: do a TOKEN_TRUE and TOKEN_FALSE? Is this case-sensitive?
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   891
    const Token token = nexttoken(ctx);
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   892
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   893
    int bad = 0;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   894
    if (token != TOKEN_IDENTIFIER)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   895
        bad = 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   896
    else if (check_token_segment(ctx, "true"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   897
        ctx->tokenbuf[ctx->tokenbufpos++] = 1;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   898
    else if (check_token_segment(ctx, "false"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   899
        ctx->tokenbuf[ctx->tokenbufpos++] = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   900
    else
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   901
        bad = 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   902
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   903
    if (ctx->tokenlen != 0)
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   904
        bad = 1;
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   905
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   906
    if (bad)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   907
        fail(ctx, "Expected 'true' or 'false'");
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   908
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   909
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   910
} // parse_args_DEFB
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   911
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   912
504
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
   913
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
   914
{
798
5dd67cc04cf9 Bunch of small tweaks to make this compile as C++ code without errors/warnings.
Ryan C. Gordon <icculus@icculus.org>
parents: 720
diff changeset
   915
    size_t i;
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   916
    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
   917
    static const char *usagestrs[] = {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   918
        "_position", "_blendweight", "_blendindices", "_normal", "_psize",
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   919
        "_texcoord", "_tangent", "_binormal", "_tessfactor", "_positiont",
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   920
        "_color", "_fog", "_depth", "_sample"
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   921
    };
504
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
   922
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   923
    for (i = 0; i < STATICARRAYLEN(usagestrs); i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   924
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   925
        if (check_token_segment(ctx, usagestrs[i]))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   926
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   927
            *issampler = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   928
            *val = i;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   929
            return 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   930
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   931
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   932
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   933
    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
   934
    {
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   935
        if (check_token_segment(ctx, samplerusagestrs[i]))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   936
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   937
            *issampler = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   938
            *val = i + 2;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   939
            return 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   940
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   941
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   942
514
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
   943
    *issampler = 0;
ba913834b491 The parse_args_DCL fiasco continues.
Ryan C. Gordon <icculus@icculus.org>
parents: 513
diff changeset
   944
    *val = 0;
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   945
    return 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   946
} // parse_dcl_usage
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   947
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   948
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   949
static int parse_args_DCL(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   950
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   951
    int issampler = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   952
    uint32 usage = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   953
    uint32 index = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   954
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   955
    ctx->tokenbufpos++;  // save a spot for the usage/index token.
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   956
    ctx->tokenbuf[0] = 0;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   957
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   958
    // parse_instruction_token() sets ctx->token to the end of the instruction
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   959
    //  so we can see if there are destination modifiers on the instruction
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   960
    //  itself...
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   961
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   962
    if (parse_dcl_usage(ctx, &usage, &issampler))
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   963
    {
575
70bb1ba99a07 Fixed DCL usage index parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 574
diff changeset
   964
        if ((ctx->tokenlen > 0) && (*ctx->token != '_'))
70bb1ba99a07 Fixed DCL usage index parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 574
diff changeset
   965
        {
70bb1ba99a07 Fixed DCL usage index parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 574
diff changeset
   966
            if (!ui32fromtoken(ctx, &index))
70bb1ba99a07 Fixed DCL usage index parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 574
diff changeset
   967
                fail(ctx, "Expected usage index");
70bb1ba99a07 Fixed DCL usage index parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 574
diff changeset
   968
        } // if
562
c9a2bc5129c9 First shot at reworking assembly parser to use preprocessor/lexer.
Ryan C. Gordon <icculus@icculus.org>
parents: 558
diff changeset
   969
    } // if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   970
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   971
    parse_destination_token(ctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   972
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   973
    const int samplerreg = (ctx->dest_arg.regtype == REG_TYPE_SAMPLER);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   974
    if (issampler != samplerreg)
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   975
        fail(ctx, "Invalid usage");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   976
    else if (samplerreg)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   977
        ctx->tokenbuf[0] = (usage << 27) | 0x80000000;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   978
    else
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   979
        ctx->tokenbuf[0] = usage | (index << 16) | 0x80000000;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   980
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   981
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   982
} // parse_args_DCL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   983
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   984
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   985
static int parse_args_D(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   986
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   987
    int retval = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   988
    retval += parse_destination_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   989
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   990
} // parse_args_D
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   991
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   992
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   993
static int parse_args_S(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   994
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   995
    int retval = 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   996
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
   997
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   998
} // parse_args_S
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   999
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1000
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1001
static int parse_args_SS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1002
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1003
    int retval = 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1004
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1005
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1006
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1007
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1008
} // parse_args_SS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1009
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1010
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1011
static int parse_args_DS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1012
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1013
    int retval = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1014
    retval += parse_destination_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1015
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1016
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1017
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1018
} // parse_args_DS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1019
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1020
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1021
static int parse_args_DSS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1022
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1023
    int retval = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1024
    retval += parse_destination_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1025
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1026
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1027
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1028
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1029
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1030
} // parse_args_DSS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1031
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1032
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1033
static int parse_args_DSSS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1034
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1035
    int retval = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1036
    retval += parse_destination_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1037
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1038
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1039
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1040
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1041
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1042
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1043
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1044
} // parse_args_DSSS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1045
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1046
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1047
static int parse_args_DSSSS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1048
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1049
    int retval = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1050
    retval += parse_destination_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1051
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1052
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1053
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1054
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1055
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1056
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1057
    require_comma(ctx);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1058
    retval += parse_source_token(ctx);
542
a56d3bfd2e36 More work on multiple error messages.
Ryan C. Gordon <icculus@icculus.org>
parents: 539
diff changeset
  1059
    return retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1060
} // parse_args_DSSSS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1061
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1062
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1063
static int parse_args_SINCOS(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1064
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1065
    // this opcode needs extra registers for sm2 and lower.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1066
    if (!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
  1067
        return parse_args_DSSS(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1068
    return parse_args_DS(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1069
} // parse_args_SINCOS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1070
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1071
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1072
static int parse_args_TEXCRD(Context *ctx)
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
    // added extra register in ps_1_4.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1075
    if (shader_version_atleast(ctx, 1, 4))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1076
        return parse_args_DS(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1077
    return parse_args_D(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1078
} // parse_args_TEXCRD
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1079
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1080
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1081
static int parse_args_TEXLD(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1082
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1083
    // different registers in px_1_3, ps_1_4, and ps_2_0!
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1084
    if (shader_version_atleast(ctx, 2, 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1085
        return parse_args_DSS(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1086
    else if (shader_version_atleast(ctx, 1, 4))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1087
        return parse_args_DS(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1088
    return parse_args_D(ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1089
} // parse_args_TEXLD
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1090
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1091
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
// one args function for each possible sequence of opcode arguments.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1094
typedef int (*args_function)(Context *ctx);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1095
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1096
// Lookup table for instruction opcodes...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1097
typedef struct
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1098
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1099
    const char *opcode_string;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1100
    args_function parse_args;
0a75f98f785b Initial work on assembler. Not even