mojoshader_assembler.c
author Ryan C. Gordon <icculus@icculus.org>
Wed, 10 Dec 2008 05:33:10 -0500
changeset 498 6a4b881704df
parent 497 5b2465d40b57
child 499 baaa47f45109
permissions -rw-r--r--
Added a FIXME.
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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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#define __MOJOSHADER_INTERNAL__ 1
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#include "mojoshader_internal.h"
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#define DEBUG_TOKENIZER 0
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// !!! FIXME: no #define support yet.
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typedef struct Context Context;
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// Context...this is state that changes as we assemble a shader...
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struct Context
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{
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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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    const char *failstr;
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    const char *source;
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    int started_parsing;
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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 on_endline;
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    unsigned int linenum;
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    char prevchar;
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    char token[64];
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    char pushedback;
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    char pushback_token[64];
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    uint32 tokenbuf[16];
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    int tokenbufpos;
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    DestArgInfo dest_arg;
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    uint32 *output;
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    uint32 *token_to_line;
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    size_t output_len;
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    size_t output_allocation;
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};
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// Convenience functions for allocators...
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static inline int out_of_memory(Context *ctx)
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{
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    if (ctx->failstr == NULL)
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        ctx->failstr = out_of_mem_str;  // fail() would call malloc().
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    return FAIL;
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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 void Free(Context *ctx, void *ptr)
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{
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    if (ptr != NULL)  // check for NULL in case of dumb free() impl.
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        ctx->free(ptr, ctx->malloc_data);
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} // Free
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static int failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
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static int failf(Context *ctx, const char *fmt, ...)
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{
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    if (ctx->failstr == NULL)  // don't change existing error.
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    {
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        char scratch = 0;
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        va_list ap;
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        va_start(ap, fmt);
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        const int len = vsnprintf(&scratch, sizeof (scratch), fmt, ap);
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        va_end(ap);
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        char *failstr = (char *) Malloc(ctx, len + 1);
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        if (failstr != NULL)
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        {
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            va_start(ap, fmt);
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            vsnprintf(failstr, len + 1, fmt, ap);  // rebuild it.
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            va_end(ap);
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            ctx->failstr = failstr;
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        } // if
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    } // if
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    return FAIL;
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} // failf
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static inline int fail(Context *ctx, const char *reason)
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{
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    return failf(ctx, "%s", reason);
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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->failstr != NULL);
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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 int ui32fromstr(const char *str, uint32 *ui32)
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{
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    //*ui32 = (uint32) atoi(minstr);
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    char *endptr = NULL;
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    const long val = strtol(str, &endptr, 10);
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    *ui32 = (uint32) val;
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    return ((val >= 0) && (*str != '\0') && (*endptr == '\0'));
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} // ui32fromstr
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static void output_token_noswap(Context *ctx, const uint32 token)
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{
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    if (isfail(ctx))
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        return;
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470
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    if (ctx->output_len >= ctx->output_allocation)
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    {
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        const size_t output_alloc_bump = 1024;  // that's tokens, not bytes.
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        const size_t newsize = ctx->output_allocation + output_alloc_bump;
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        void *ptr;
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        ptr = Malloc(ctx, newsize * sizeof (uint32));
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        if (ptr == NULL)
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            return;
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        if (ctx->output_len > 0)
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            memcpy(ptr, ctx->output, ctx->output_len * sizeof (uint32));
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        Free(ctx, ctx->output);
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        ctx->output = (uint32 *) ptr;
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        ptr = Malloc(ctx, newsize * sizeof (uint32));
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        if (ptr == NULL)
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            return;
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        if (ctx->output_len > 0)
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            memcpy(ptr, ctx->token_to_line, ctx->output_len * sizeof (uint32));
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        Free(ctx, ctx->token_to_line);
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        ctx->token_to_line = (uint32 *) ptr;
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470
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        ctx->output_allocation = newsize;
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    } // if
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486
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    ctx->output[ctx->output_len] = token;
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    ctx->token_to_line[ctx->output_len] = ctx->linenum;
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    ctx->output_len++;
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} // output_token_noswap
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static inline void output_token(Context *ctx, const uint32 token)
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{
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    output_token_noswap(ctx, SWAP32(token));
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} // output_token
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static void output_comment_bytes(Context *ctx, const uint8 *buf, size_t len)
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{
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    if (len > (0xFFFF * 4))  // length is stored as token count, in 16 bits.
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        fail(ctx, "Comment field is too big");
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    else if (!isfail(ctx))
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    {
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        const uint32 tokencount = (len / 4) + ((len % 4) ? 1 : 0);
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        output_token(ctx, 0xFFFE | (tokencount << 16));
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        while (len >= 4)
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        {
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            output_token_noswap(ctx, *((const uint32 *) buf));
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            len -= 4;
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            buf += 4;
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        } // while
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        if (len > 0)  // handle spillover...
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        {
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            union { uint8 ui8[4]; uint32 ui32; } overflow;
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            overflow.ui32 = 0;
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            memcpy(overflow.ui8, buf, len);
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            output_token_noswap(ctx, overflow.ui32);
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        } // if
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    } // else if
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} // output_comment_bytes
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static inline void output_comment_string(Context *ctx, const char *str)
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{
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    output_comment_bytes(ctx, (const uint8 *) str, strlen(str));
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} // output_comment_string
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   212
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static int _tokenize(Context *ctx)
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{
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    int idx = 0;
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    if (isfail(ctx))
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        return FAIL;
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   219
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    if (ctx->pushedback)
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   221
    {
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        ctx->pushedback = 0;
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        return NOFAIL;
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   224
    } // if
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   225
470
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   226
    if (ctx->on_endline)
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   227
    {
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        ctx->on_endline = 0;
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   229
        ctx->linenum++;  // passed a newline, update.
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   230
    } // if
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   231
465
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   232
    while (1)
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   233
    {
477
e8c74c310a11 Added a FIXME.
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   234
        // !!! FIXME: carefully crafted (but legal) comments can trigger this.
465
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   235
        if (idx >= sizeof (ctx->token))
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   236
            return fail(ctx, "buffer overflow");
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   237
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   238
        char ch = *ctx->source;
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   239
        if (ch == '\t')
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   240
            ch = ' ';  // collapse tabs into single spaces.
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   241
        else if (ch == '\r')
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   242
        {
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   243
            if (ctx->source[1] == '\n')
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   244
               continue;  // ignore '\r' if this is "\r\n" ...
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   245
            ch = '\n';
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   246
        } // else if
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   247
478
af4bfa5d615c Some basic tokenizer logic fixes.
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diff changeset
   248
        if ((ch >= '0') && (ch <= '9'))
465
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   249
        {
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   250
            // starting a number, but rest of current token was not number.
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   251
            if ((idx > 0) && ((ctx->prevchar < '0') || (ctx->prevchar > '9')))
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   252
            {
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   253
                ctx->token[idx++] = '\0';
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   254
                return NOFAIL;
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   255
            } // if
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   256
        } // if
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   257
        else
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diff changeset
   258
        {
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   259
            // starting a non-number, but rest of current token was numbers.
478
af4bfa5d615c Some basic tokenizer logic fixes.
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diff changeset
   260
            if ((idx > 0) && ((ctx->prevchar >= '0') && (ctx->prevchar <= '9')))
465
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diff changeset
   261
            {
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   262
                ctx->token[idx++] = '\0';
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   263
                return NOFAIL;
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diff changeset
   264
            } // if
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   265
        } // else
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   266
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   267
        switch (ch)
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   268
        {
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   269
            case '/':
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   270
            case ';':  // !!! FIXME: comment, right?
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   271
                if (idx != 0)  // finish off existing token.
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   272
                    ctx->token[idx] = '\0';
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   273
                else
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   274
                {
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   275
                    ctx->token[idx++] = ch;
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diff changeset
   276
                    ctx->source++;
478
af4bfa5d615c Some basic tokenizer logic fixes.
Ryan C. Gordon <icculus@icculus.org>
parents: 477
diff changeset
   277
                    if ((ch == '/') && (*ctx->source == '/'))
465
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diff changeset
   278
                    {
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diff changeset
   279
                        ctx->token[idx++] = '/';
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diff changeset
   280
                        ctx->source++;
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diff changeset
   281
                    } // if
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diff changeset
   282
                    ctx->token[idx++] = '\0';
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diff changeset
   283
                } // else
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diff changeset
   284
                return NOFAIL;
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parents:
diff changeset
   285
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diff changeset
   286
            case ' ':
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   287
                if (ctx->prevchar == ' ')
465
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diff changeset
   288
                    break;   // multiple whitespace collapses into one.
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parents:
diff changeset
   289
                // intentional fall-through...
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parents:
diff changeset
   290
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parents:
diff changeset
   291
            case '_':
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parents:
diff changeset
   292
            case '[':
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   293
            case ']':
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   294
            case '(':
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parents:
diff changeset
   295
            case ')':
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parents:
diff changeset
   296
            case '!':
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parents:
diff changeset
   297
            case '+':
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parents:
diff changeset
   298
            case '-':
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diff changeset
   299
            case ',':
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diff changeset
   300
            case '.':
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   301
            case '\n':
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   302
                if (idx != 0)  // finish off existing token.
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parents:
diff changeset
   303
                    ctx->token[idx] = '\0';
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parents:
diff changeset
   304
                else  // this is a token in itself.
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parents:
diff changeset
   305
                {
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parents:
diff changeset
   306
                    if (ch == '\n')
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   307
                        ctx->on_endline = 1;
465
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parents:
diff changeset
   308
                    ctx->source++;
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parents:
diff changeset
   309
                    ctx->token[idx++] = ch;
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parents:
diff changeset
   310
                    ctx->token[idx++] = '\0';
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   311
                } // else
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diff changeset
   312
                return NOFAIL;
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parents:
diff changeset
   313
0a75f98f785b Initial work on assembler. Not even close to done.
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parents:
diff changeset
   314
            case '\0':
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parents:
diff changeset
   315
                ctx->token[idx] = '\0';
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   316
                if (idx != 0)  // had any chars? It's a token.
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parents:
diff changeset
   317
                    return NOFAIL;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   318
                return END_OF_STREAM;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   319
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   320
            default:
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   321
                ctx->source++;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   322
                ctx->token[idx++] = ch;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   323
                break;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   324
        } // switch
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parents:
diff changeset
   325
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   326
        ctx->prevchar = ch;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   327
    } // while
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   328
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   329
    return fail(ctx, "???");  // shouldn't hit this.
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   330
} // _tokenize
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parents:
diff changeset
   331
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   332
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   333
static inline int tokenize(Context *ctx)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   334
{
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   335
    const int rc = _tokenize(ctx);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   336
    #if DEBUG_TOKENIZER
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   337
    printf("TOKENIZE: %s '%s'\n",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   338
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   339
           (rc == FAIL) ? "FAIL" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   340
           (rc == NOFAIL) ? "NOFAIL" : "???",
495
93ede2fba3c6 Made debug output more readable.
Ryan C. Gordon <icculus@icculus.org>
parents: 492
diff changeset
   341
           (ctx->token[0] == '\n') ? "\\n" : ctx->token);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   342
    #endif
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   343
    return rc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   344
} // tokenize
0a75f98f785b Initial work on assembler. Not even close to done.
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parents:
diff changeset
   345
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   346
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   347
static inline int pushback(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   348
{
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
    #if DEBUG_TOKENIZER
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   350
    printf("PUSHBACK\n");
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   352
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
    if (ctx->pushedback)
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   354
        return fail(ctx, "BUG: Double pushback in parser");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   355
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
        ctx->pushedback = 1;
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   357
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   358
    return NOFAIL;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   359
} // pushback
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   360
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   361
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
static int nexttoken(Context *ctx, const int ignoreeol,
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
                     const int ignorewhitespace, const int eolok,
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   364
                     const int eosok)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   365
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   366
    int rc = NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   367
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   368
    while ((rc = tokenize(ctx)) == NOFAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   369
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   370
        if (strcmp(ctx->token, "\n") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   371
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   372
            if (ignoreeol)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   373
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   374
            else if (!eolok)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   375
                return fail(ctx, "Unexpected EOL");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   376
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   378
        else if (strcmp(ctx->token, " ") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
            if (ignorewhitespace)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   382
        } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
        // skip comments...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
        else if ((strcmp(ctx->token, "//") == 0) || (strcmp(ctx->token, ";") == 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   387
            while ((rc = tokenize(ctx)) == NOFAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
            {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
                if (strcmp(ctx->token, "\n") == 0)
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   390
                {
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   391
                    pushback(ctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
                    break;
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   393
                } // if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
            } // while
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   395
            continue;  // pick up from newline, go again.
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
        } // if
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
        break;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
    #if DEBUG_TOKENIZER
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
    printf("NEXTTOKEN: %s '%s'\n",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   404
           (rc == FAIL) ? "FAIL" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   405
           (rc == NOFAIL) ? "NOFAIL" : "???",
495
93ede2fba3c6 Made debug output more readable.
Ryan C. Gordon <icculus@icculus.org>
parents: 492
diff changeset
   406
           (ctx->token[0] == '\n') ? "\\n" : ctx->token);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   409
    if ((rc == END_OF_STREAM) && (!eosok))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
        return fail(ctx, "Unexpected EOF");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   412
    return rc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
} // nexttoken
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   416
static int require_endline(Context *ctx)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   417
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   418
    const int rc = nexttoken(ctx, 0, 1, 1, 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   419
    if (rc == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   420
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   421
    else if (rc == END_OF_STREAM)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   422
        return NOFAIL;  // we'll call this an EOL.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   423
    else if (strcmp(ctx->token, "\n") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   424
        return fail(ctx, "Endline expected");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
} // require_endline
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   427
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   428
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   429
static int require_comma(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
{
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   431
    const int rc = nexttoken(ctx, 0, 1, 0, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   432
    if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   433
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   434
    else if (strcmp(ctx->token, ",") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   435
        return fail(ctx, "Comma expected");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
    return NOFAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   437
} // require_comma
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
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
   441
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
    // !!! FIXME: some of these registers are only valid for some shader types.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
    int neednum = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
    int regnum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
    const char *t = ctx->token;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
    RegisterType regtype = REG_TYPE_TEMP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
    if (strcasecmp(t, "r") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
        regtype = REG_TYPE_TEMP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   452
    else if (strcasecmp(t, "v") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
        regtype = REG_TYPE_INPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
    else if (strcasecmp(t, "c") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
        regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
    else if (strcasecmp(t, "i") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
        regtype = REG_TYPE_CONSTINT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   458
    else if (strcasecmp(t, "b") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
        regtype = REG_TYPE_CONSTBOOL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
    else if (strcasecmp(t, "oC") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   461
        regtype = REG_TYPE_COLOROUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   462
    else if (strcasecmp(t, "oDepth") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
        regtype = REG_TYPE_DEPTHOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
    else if (strcasecmp(t, "s") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
        regtype = REG_TYPE_SAMPLER;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
    else if (strcasecmp(t, "oD") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
        regtype = REG_TYPE_ATTROUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
    else if (strcasecmp(t, "l") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
        regtype = REG_TYPE_LABEL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
    else if (strcasecmp(t, "p") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
        regtype = REG_TYPE_PREDICATE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
    else if (strcasecmp(t, "aL") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
        regtype = REG_TYPE_LOOP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
    else if (strcasecmp(t, "o") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
        if (!shader_is_vertex(ctx) || !shader_version_atleast(ctx, 3, 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
            return fail(ctx, "Output register not valid in this shader type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
    else if (strcasecmp(t, "oT") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
        if (shader_is_vertex(ctx) || shader_version_atleast(ctx, 3, 0))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
            return fail(ctx, "Output register not valid in this shader type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   487
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
    else if (strcasecmp(t, "a") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
        if (!shader_is_vertex(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
            return fail(ctx, "Address register only valid in vertex shaders.");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
    else if (strcasecmp(t, "t") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   497
        if (!shader_is_pixel(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   498
            return fail(ctx, "Address register only valid in pixel shaders.");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   499
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   500
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   501
    else if (strcasecmp(t, "vPos") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   502
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   503
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   504
        regnum = (int) MISCTYPE_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   505
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   506
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   507
    else if (strcasecmp(t, "vFace") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   508
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   509
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   510
        regnum = (int) MISCTYPE_TYPE_FACE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   511
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   512
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   513
    else if (strcasecmp(t, "oPos") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   514
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   516
        regnum = (int) RASTOUT_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   517
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   518
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   519
    else if (strcasecmp(t, "oFog") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   521
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   522
        regnum = (int) RASTOUT_TYPE_FOG;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   523
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
    else if (strcasecmp(t, "oPts") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   527
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
        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
   529
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
    } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   531
        
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
    //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
   533
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   535
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
        return fail(ctx, "expected register type");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   538
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   539
    if (neednum)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
    {
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   541
        // cheat the pushback.
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   542
        const char *origsrc = ctx->source;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   543
        const int origonendline = ctx->on_endline;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   544
        const int origlinenum = ctx->linenum;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   545
        const int origprevchar = ctx->prevchar;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   546
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   547
        if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   548
            return FAIL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   549
        else if (strcmp(ctx->token, "[") == 0)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   550
            neednum = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   551
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   552
        ctx->source = origsrc;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   553
        ctx->on_endline = origonendline;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   554
        ctx->linenum = origlinenum;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   555
        ctx->prevchar = origprevchar;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   556
    } // if
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   557
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   558
    if (neednum)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   559
    {
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
        if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   561
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   563
        uint32 ui32 = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   564
        if (!ui32fromstr(ctx->token, &ui32))
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   565
            return fail(ctx, "Invalid register index");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   566
        regnum = (int) ui32;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   567
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   568
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   569
    // split up REG_TYPE_CONST
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   570
    if (regtype == REG_TYPE_CONST)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   571
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
        if (regnum < 2048)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   573
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   574
            regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   575
            regnum -= 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
        else if (regnum < 4096)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   578
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   579
            regtype = REG_TYPE_CONST2;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   580
            regnum -= 2048;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   581
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
        else if (regnum < 6144)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   583
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   584
            regtype = REG_TYPE_CONST3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   585
            regnum -= 4096;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   586
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   587
        else if (regnum < 8192)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   588
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   589
            regtype = REG_TYPE_CONST4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   590
            regnum -= 6144;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   591
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   592
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   593
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   594
            return fail(ctx, "Invalid const register index");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   595
        } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   597
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   598
    *rtype = regtype;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   599
    *rnum = regnum;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   600
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   601
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   602
} // parse_register_name
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   605
static int set_result_shift(Context *ctx, DestArgInfo *info, const int val)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   606
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   607
    if (info->result_shift != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   608
        return fail(ctx, "Multiple result shift modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   609
    info->result_shift = val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   610
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   611
} // set_result_shift
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   612
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   613
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
static int parse_destination_token(Context *ctx, DestArgInfo *info)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
    memset(info, '\0', sizeof (info));
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
    // See if there are destination modifiers on the instruction itself...
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
    while (1)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
        if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
        else if (strcmp(ctx->token, " ") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
            break;  // done with modifiers.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
        else if (strcmp(ctx->token, "_") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
            return fail(ctx, "Expected modifier or whitespace");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
        else if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
        else if (strcasecmp(ctx->token, "x2") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
            set_result_shift(ctx, info, 0x1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   631
        else if (strcasecmp(ctx->token, "x4") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
            set_result_shift(ctx, info, 0x2);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
        else if (strcasecmp(ctx->token, "x8") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
            set_result_shift(ctx, info, 0x3);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
        else if (strcasecmp(ctx->token, "d8") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   636
            set_result_shift(ctx, info, 0xD);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   637
        else if (strcasecmp(ctx->token, "d4") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   638
            set_result_shift(ctx, info, 0xE);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   639
        else if (strcasecmp(ctx->token, "d2") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   640
            set_result_shift(ctx, info, 0xF);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   641
        else if (strcasecmp(ctx->token, "sat") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   642
            info->result_mod |= MOD_SATURATE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   643
        else if (strcasecmp(ctx->token, "pp") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   644
            info->result_mod |= MOD_PP;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   645
        else if (strcasecmp(ctx->token, "centroid") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   646
            info->result_mod |= MOD_CENTROID;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   647
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   648
            return fail(ctx, "Expected modifier");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   649
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   650
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   651
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   652
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   653
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   654
    // !!! FIXME: predicates.
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   655
    if (strcmp(ctx->token, "(") == 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   656
        return fail(ctx, "Predicates unsupported at this time");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   657
    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
   658
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   659
    if (parse_register_name(ctx, &info->regtype, &info->regnum) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   660
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   661
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   662
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   663
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   664
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   665
    // !!! 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
   666
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   667
    if (strcmp(ctx->token, ".") != 0)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   668
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   669
        info->writemask = 0xF;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   670
        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
   671
        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
   672
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   673
    else if (scalar_register(ctx->shader_type, info->regtype, info->regnum))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   674
        return fail(ctx, "Writemask specified for scalar register");
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   675
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   676
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   677
    else if (ctx->token[0] == '\0')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   678
        return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   679
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   680
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   681
        char *ptr = ctx->token;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   682
        info->writemask0 = info->writemask1 = info->writemask2 = info->writemask3 = 0;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   683
        if (*ptr == 'x') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   684
        if (*ptr == 'y') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   685
        if (*ptr == 'z') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   686
        if (*ptr == 'w') { info->writemask3 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   687
        if ((ptr == ctx->token) && (shader_is_pixel(ctx)))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   688
        {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   689
            if (*ptr == 'r') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   690
            if (*ptr == 'g') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   691
            if (*ptr == 'b') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   692
            if (*ptr == 'a') { info->writemask3 = 1; ptr++; }
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   693
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   694
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   695
        if (*ptr != '\0')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   696
            return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   698
        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
   699
                            ((info->writemask1 & 0x1) << 1) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   700
                            ((info->writemask2 & 0x1) << 2) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   701
                            ((info->writemask3 & 0x1) << 3) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   702
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   703
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   704
    info->orig_writemask = info->writemask;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   705
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   706
    if (ctx->tokenbufpos >= STATICARRAYLEN(ctx->tokenbuf))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   707
        return fail(ctx, "Too many tokens");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   708
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   709
    ctx->tokenbuf[ctx->tokenbufpos++] =
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   710
            ( ((((uint32) 1)) << 31) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
              ((((uint32) info->regnum) & 0x7ff) << 0) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   712
              ((((uint32) info->relative) & 0x1) << 13) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   713
              ((((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
   714
              ((((uint32) info->result_shift) & 0xF) << 24) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   715
              ((((uint32) info->regtype) & 0x7) << 28) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
              ((((uint32) info->regtype) & 0x18) << 8) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   717
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   718
    return 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   719
} // parse_destination_token
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   721
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   722
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
   723
                           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
   724
                           SourceMod *srcmod)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   725
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   726
    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
   727
        fail(ctx, "Incompatible source modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   728
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   729
        *srcmod = ((negate) ? negated : norm);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   730
} // set_source_mod
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   731
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   732
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   733
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
   734
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   735
    int retval = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   736
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   737
    if (ctx->tokenbufpos >= STATICARRAYLEN(ctx->tokenbuf))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   738
        return fail(ctx, "Too many tokens");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   739
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   740
    // mark this now, so optional relative addressing token is placed second.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   741
    uint32 *token = &ctx->tokenbuf[ctx->tokenbufpos++];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   742
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   743
    SourceMod srcmod = SRCMOD_NONE;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   744
    int negate = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   745
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   746
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   747
    else if (strcmp(ctx->token, "1") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   748
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   749
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   750
            return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   751
        else if (strcmp(ctx->token, "-") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   752
            return fail(ctx, "Unexpected value");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   753
        else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   754
            srcmod = SRCMOD_COMPLEMENT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   755
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   756
    else if (strcmp(ctx->token, "!") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   757
        srcmod = SRCMOD_NOT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   758
    else if (strcmp(ctx->token, "-") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   759
        negate = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   760
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   761
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   762
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   763
    RegisterType regtype;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   764
    int regnum;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   765
    if (parse_register_name(ctx, &regtype, &regnum) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   766
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   767
    else if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   768
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   769
    else if (strcmp(ctx->token, "_") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   770
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   771
    else if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   772
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   773
    else if (strcasecmp(ctx->token, "bias") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   774
        set_source_mod(ctx, negate, SRCMOD_BIAS, SRCMOD_BIASNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   775
    else if (strcasecmp(ctx->token, "bx2") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   776
        set_source_mod(ctx, negate, SRCMOD_SIGN, SRCMOD_SIGNNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   777
    else if (strcasecmp(ctx->token, "x2") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   778
        set_source_mod(ctx, negate, SRCMOD_X2, SRCMOD_X2NEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   779
    else if (strcasecmp(ctx->token, "dz") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   780
        set_source_mod(ctx, negate, SRCMOD_DZ, SRCMOD_NONE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   781
    else if (strcasecmp(ctx->token, "dw") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   782
        set_source_mod(ctx, negate, SRCMOD_DW, SRCMOD_NONE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   783
    else if (strcasecmp(ctx->token, "abs") == 0)
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   784
        set_source_mod(ctx, negate, SRCMOD_ABS, SRCMOD_ABSNEGATE, &srcmod);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   785
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   786
        return fail(ctx, "Invalid source modifier");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   787
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   788
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   789
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   790
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   791
    uint32 relative = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   792
    if (strcmp(ctx->token, "[") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   793
        pushback(ctx);  // not relative addressing?
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   794
    else if (!relok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   795
        return fail(ctx, "Relative addressing not permitted here.");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   796
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   797
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   798
        const int rc = parse_source_token_maybe_relative(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   799
        if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   800
            return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   801
        retval += rc;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   802
        relative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   803
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   804
            return FAIL;
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   805
        else if (strcmp(ctx->token, "+") != 0)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   806
            pushback(ctx);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   807
        else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   808
            return FAIL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   809
        else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   810
        {
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   811
            if (regnum != 0)  // !!! FIXME: maybe c3[a0.x + 5] is legal and becomes c[a0.x + 8] ?
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   812
                fail(ctx, "Relative addressing with explicit register number.");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   813
            uint32 ui32 = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   814
            if (!ui32fromstr(ctx->token, &ui32))
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   815
                return fail(ctx, "Invalid relative addressing offset");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   816
            regnum += (int) ui32;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   817
        } // else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   818
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   819
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   820
            return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   821
        else if (strcmp(ctx->token, "]") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   822
            return fail(ctx, "Expected ']'");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   823
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   824
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   825
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   826
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   827
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   828
    uint32 swizzle = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   829
    if (strcmp(ctx->token, ".") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   830
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   831
        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
   832
        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
   833
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   834
    else if (scalar_register(ctx->shader_type, regtype, regnum))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   835
        return fail(ctx, "Swizzle specified for scalar register");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   836
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   837
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   838
    else if (ctx->token[0] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   839
        return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   840
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   841
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   842
        // deal with shortened form (.x = .xxxx, etc).
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   843
        if (ctx->token[1] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   844
            ctx->token[1] = ctx->token[2] = ctx->token[3] = ctx->token[0];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   845
        else if (ctx->token[2] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   846
            ctx->token[2] = ctx->token[3] = ctx->token[1];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   847
        else if (ctx->token[3] == '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   848
            ctx->token[3] = ctx->token[2];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   849
        else if (ctx->token[4] != '\0')
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   850
            return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   851
        ctx->token[4] = '\0';
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   852
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   853
        uint32 val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   854
        int saw_xyzw = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   855
        int saw_rgba = 0;
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   856
        int i;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   857
        for (i = 0; i < 4; i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   858
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   859
            const int component = (int) ctx->token[i];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   860
            switch (component)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   861
            {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   862
                case 'x': val = 0; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   863
                case 'y': val = 1; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   864
                case 'z': val = 2; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   865
                case 'w': val = 3; saw_xyzw = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   866
                case 'r': val = 0; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   867
                case 'g': val = 1; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   868
                case 'b': val = 2; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   869
                case 'a': val = 3; saw_rgba = 1; break;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   870
                default: return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   871
            } // switch
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   872
            swizzle |= (val << (i * 2));
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   873
        } // for
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
        if (saw_xyzw && saw_rgba)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   876
            return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   877
    } // else
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
    *token = ( ((((uint32) 1)) << 31) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   880
               ((((uint32) regnum) & 0x7ff) << 0) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   881
               ((((uint32) relative) & 0x1) << 13) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   882
               ((((uint32) swizzle) & 0xFF) << 16) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   883
               ((((uint32) srcmod) & 0xF) << 24) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   884
               ((((uint32) regtype) & 0x7) << 28) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   885
               ((((uint32) regtype) & 0x18) << 8) );
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   886
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   887
    return retval;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   888
} // parse_source_token_maybe_relative
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   889
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   890
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   891
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
   892
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   893
    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
   894
} // parse_source_token
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   895
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   896
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   897
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
   898
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   899
    return (isfail(ctx) ? FAIL : 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   900
} // parse_args_NULL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   901
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   902
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   903
static int parse_num(Context *ctx, const int floatok, uint32 *token)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   904
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   905
    int32 negative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   906
    union { float f; int32 si32; uint32 ui32; } cvt;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   907
    cvt.si32 = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   908
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   909
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   910
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   911
    else if (strcmp(ctx->token, "-") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   912
        negative = -1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   913
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   914
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   915
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   916
    uint32 val = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   917
    if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   918
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   919
    else if (!ui32fromstr(ctx->token, &val))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   920
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   921
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   922
    uint32 fraction = 0;
488
1a318d011c00 Handle endlines on DEF statements.
Ryan C. Gordon <icculus@icculus.org>
parents: 487
diff changeset
   923
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   924
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   925
    else if (strcmp(ctx->token, ".") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   926
        pushback(ctx);  // whole number
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   927
    else if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   928
        return fail(ctx, "Expected whole number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   929
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   930
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   931
    else if (!ui32fromstr(ctx->token, &fraction))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   932
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   933
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   934
    uint32 exponent = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   935
    int negexp = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   936
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   937
        return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   938
    else if (strcmp(ctx->token, "e") != 0)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   939
        pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   940
    else if (!floatok)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   941
        return fail(ctx, "Exponent on whole number");  // !!! FIXME: illegal?
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   942
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   943
        return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   944
    else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   945
    {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   946
        if (strcmp(ctx->token, "-") != 0)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   947
            pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   948
        else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   949
            negexp = 1;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   950
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   951
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   952
            return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   953
        else if (!ui32fromstr(ctx->token, &exponent))
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   954
            return fail(ctx, "Expected exponent");
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   955
    } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   956
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   957
    if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   958
        cvt.si32 = ((int32) val) * negative;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   959
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   960
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   961
        // !!! FIXME: this is lame.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   962
        char buf[128];
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   963
        snprintf(buf, sizeof (buf), "%s%u.%u", (negative < 0) ? "-" : "",
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   964
                 (uint) val, (uint) fraction);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   965
        sscanf(buf, "%f", &cvt.f);
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   966
        cvt.f *= (float) negative;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   967
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   968
        if (exponent)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   969
        {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   970
            int i;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   971
            if (negexp)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   972
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   973
                for (i = 0; i > exponent; i--)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   974
                    cvt.f /= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   975
            } // if
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   976
            else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   977
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   978
                for (i = 0; i < exponent; i++)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   979
                    cvt.f *= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   980
            } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
   981
        } // if
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   982
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   983
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   984
    *token = cvt.ui32;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   985
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   986
} // parse_num
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   987
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   988
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   989
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
   990
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   991
    if (parse_destination_token(ctx, &ctx->dest_arg) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   992
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   993
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   994
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   995
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   996
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   997
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   998
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   999
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1000
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1001
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1002
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1003
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1004
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1005
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1006
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1007
    else if (parse_num(ctx, isflt, &ctx->tokenbuf[ctx->tokenbufpos++]) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1008
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1009
    return 6;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1010
} // parse_args_DEFx
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1011
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1012
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1013
static int parse_args_DEF(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1014
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1015
    return parse_args_DEFx(ctx, 1);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1016
} // parse_args_DEF
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1017
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1018
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1019
static int parse_args_DEFI(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1020
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1021
    return parse_args_DEFx(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1022
} // parse_args_DEFI
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1023
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1024
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1025
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
  1026
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1027
    if (parse_destination_token(ctx, &ctx->dest_arg) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1028
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1029
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1030
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1031
    else if (strcmp(ctx->token, ",") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1032
        return fail(ctx, "Expected ','");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1033
    else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1034
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1035
    else if (strcasecmp(ctx->token, "true") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1036
        ctx->tokenbuf[ctx->tokenbufpos++] = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1037
    else if (strcasecmp(ctx->token, "false") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1038
        ctx->tokenbuf[ctx->tokenbufpos++] = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1039
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1040
        return fail(ctx, "Expected 'true' or 'false'");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1041
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1042
} // parse_args_DEFB
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1043
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1044
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1045
static int parse_dcl_usage(const char *token, uint32 *val, int *issampler)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1046
{
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1047
    int i;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1048
    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
  1049
    static const char *usagestrs[] = {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1050
        "position", "blendweight", "blendindices", "normal", "psize",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1051
        "texcoord", "tangent", "binormal", "tessfactor", "positiont",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1052
        "color", "fog", "depth", "sample"
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1053
    };
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1054
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1055
    for (i = 0; i < STATICARRAYLEN(usagestrs); i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1056
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1057
        if (strcasecmp(usagestrs[i], token) == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1058
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1059
            *issampler = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1060
            *val = i;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1061
            return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1062
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1063
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1064
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1065
    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
  1066
    {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1067
        if (strcasecmp(samplerusagestrs[i], token) == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1068
        {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1069
            *issampler = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1070
            *val = i + 2;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1071
            return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1072
        } // if
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1073
    } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1074
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1075
    return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1076
} // parse_dcl_usage
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1077
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1078
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1079
static int parse_args_DCL(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1080
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1081
    int issampler = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1082
    uint32 usage = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1083
    uint32 index = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1084
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1085
    ctx->tokenbufpos++;  // save a spot for the usage/index token.
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1086
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1087
    if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1088
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1089
    else if (strcmp(ctx->token, " ") == 0)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1090
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1091
    else if (strcmp(ctx->token, "_") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1092
        return fail(ctx, "Expected register or usage");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1093
    else if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1094
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1095
    else if (parse_dcl_usage(ctx->token, &usage, &issampler) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1096
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1097
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1098
    if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1099
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1100
    else if (strcmp(ctx->token, " ") == 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1101
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1102
    else if (!ui32fromstr(ctx->token, &index))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1103
        return fail(ctx, "Expected usage index or register");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1104
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1105
    if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1106
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1107
    else if (strcmp(ctx->token, " ") != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1108
        return fail(ctx, "Expected register");
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
  1109
    else if (pushback(ctx) == FAIL)  // parse_destination_token() wants the ' '
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
  1110
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1111
    else if (parse_destination_token(ctx, &ctx->dest_arg) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1112
        return FAIL;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1113
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1114
    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
  1115
    if (issampler != samplerreg)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1116
        return fail(ctx, "Invalid usage");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1117
    else if (samplerreg)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1118
        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
  1119
    else
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1120
        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
  1121
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1122
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1123
} // parse_args_DCL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1124
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1125
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1126
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
  1127
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1128
    int retval = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1129
    retval += parse_destination_token(ctx, &ctx->dest_arg);
480
e7a7822fb38b Logic error due to second-guessing design.
Ryan C. Gordon <icculus@icculus.org>
parents: 479
diff changeset
  1130
    return isfail(ctx) ? FAIL : retval;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1131
} // parse_args_D
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1132
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1133
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1134
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
  1135
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1136
    int retval = 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1137
    retval += parse_source_token(ctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1138
    return isfail(ctx) ? FAIL : retval;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1139
} // parse_args_S
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1140
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1141
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1142
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
  1143
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1144
    int retval = 1;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1145
    retval += parse_source_token(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1146
    if (require_comma(ctx) == FAIL) return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1147
    retval += parse_source_token(ctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1148
    return isfail(ctx) ? FAIL : retval;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1149
} // parse_args_SS
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1150
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1151
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1152
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
  1153
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1154
    int retval = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1155
    retval += parse_destination_token(ctx, &ctx->dest_arg);
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 4