mojoshader_assembler.c
author Ryan C. Gordon <icculus@icculus.org>
Sun, 21 Dec 2008 17:59:47 -0500
changeset 529 e77225cd13ae
parent 528 3ce47a5d9fe4
child 532 19e2f562b9ce
permissions -rw-r--r--
Offsets into CTAB need to start immediately _after_ the ID field.
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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 TokenizerContext
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{
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    const char *source;
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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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} TokenizerContext;
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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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    TokenizerContext tctx;
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    MOJOSHADER_parsePhase parse_phase;
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    MOJOSHADER_shaderType shader_type;
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    uint8 major_ver;
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    uint8 minor_ver;
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    uint32 version_token;
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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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    uint8 *ctab;
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    uint32 ctab_len;
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    uint32 ctab_allocation;
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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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static inline int tokeq(const TokenizerContext *tctx, const char *token)
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{
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    return (strcasecmp(tctx->token, token) == 0);
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} // tokeq
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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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482
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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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465
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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->tctx.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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static int tokenize_ctx(Context *ctx, TokenizerContext *tctx)
465
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{
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    int idx = 0;
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   231
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    if (isfail(ctx))
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        return FAIL;
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   234
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    if (tctx->pushedback)
465
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   236
    {
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        tctx->pushedback = 0;
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        return NOFAIL;
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   239
    } // if
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   240
515
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   241
    if (tctx->on_endline)
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   242
    {
515
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   243
        tctx->on_endline = 0;
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   244
        tctx->linenum++;  // passed a newline, update.
470
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   245
    } // if
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   246
465
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   247
    while (1)
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   248
    {
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   249
        // !!! FIXME: carefully crafted (but legal) comments can trigger this.
515
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   250
        if (idx >= sizeof (tctx->token))
465
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   251
            return fail(ctx, "buffer overflow");
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   252
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   253
        char ch = *tctx->source;
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   254
        if (ch == '\t')
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   255
            ch = ' ';  // collapse tabs into single spaces.
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   256
        else if (ch == '\r')
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   257
        {
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   258
            if (tctx->source[1] == '\n')
465
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   259
               continue;  // ignore '\r' if this is "\r\n" ...
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   260
            ch = '\n';
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   261
        } // else if
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   262
478
af4bfa5d615c Some basic tokenizer logic fixes.
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   263
        if ((ch >= '0') && (ch <= '9'))
465
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   264
        {
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   265
            // starting a number, but rest of current token was not number.
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   266
            if ((idx > 0) && ((tctx->prevchar < '0') || (tctx->prevchar > '9')))
465
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   267
            {
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   268
                tctx->token[idx++] = '\0';
465
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   269
                return NOFAIL;
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   270
            } // if
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   271
        } // if
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   272
        else
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   273
        {
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   274
            // starting a non-number, but rest of current token was numbers.
515
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            if ((idx > 0) && ((tctx->prevchar >= '0') && (tctx->prevchar <= '9')))
465
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   276
            {
515
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                tctx->token[idx++] = '\0';
465
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   278
                return NOFAIL;
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   279
            } // if
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   280
        } // else
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   281
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   282
        switch (ch)
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   283
        {
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   284
            case '/':
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   285
            case ';':  // !!! FIXME: comment, right?
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   286
                if (idx != 0)  // finish off existing token.
515
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   287
                    tctx->token[idx] = '\0';
465
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diff changeset
   288
                else
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diff changeset
   289
                {
515
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   290
                    tctx->token[idx++] = ch;
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   291
                    tctx->source++;
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   292
                    if ((ch == '/') && (*tctx->source == '/'))
465
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   293
                    {
515
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   294
                        tctx->token[idx++] = '/';
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   295
                        tctx->source++;
465
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   296
                    } // if
515
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   297
                    tctx->token[idx++] = '\0';
465
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   298
                } // else
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   299
                return NOFAIL;
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   300
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   301
            case ' ':
515
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   302
                if (tctx->prevchar == ' ')
465
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   303
                    break;   // multiple whitespace collapses into one.
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   304
                // intentional fall-through...
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   305
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   306
            case '_':
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   307
            case '[':
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   308
            case ']':
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   309
            case '(':
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   310
            case ')':
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   311
            case '!':
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   312
            case '+':
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   313
            case '-':
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   314
            case ',':
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   315
            case '.':
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   316
            case '\n':
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   317
                if (idx != 0)  // finish off existing token.
515
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   318
                    tctx->token[idx] = '\0';
465
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   319
                else  // this is a token in itself.
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diff changeset
   320
                {
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   321
                    if (ch == '\n')
515
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   322
                        tctx->on_endline = 1;
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diff changeset
   323
                    tctx->source++;
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diff changeset
   324
                    tctx->token[idx++] = ch;
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diff changeset
   325
                    tctx->token[idx++] = '\0';
465
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diff changeset
   326
                } // else
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   327
                return NOFAIL;
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diff changeset
   328
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   329
            case '\0':
515
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   330
                tctx->token[idx] = '\0';
465
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   331
                if (idx != 0)  // had any chars? It's a token.
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   332
                    return NOFAIL;
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   333
                return END_OF_STREAM;
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diff changeset
   334
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   335
            default:
515
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diff changeset
   336
                tctx->source++;
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diff changeset
   337
                tctx->token[idx++] = ch;
465
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   338
                break;
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diff changeset
   339
        } // switch
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   340
515
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   341
        tctx->prevchar = ch;
465
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diff changeset
   342
    } // while
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   343
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   344
    return fail(ctx, "???");  // shouldn't hit this.
515
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   345
} // tokenize_ctx
465
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   346
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   347
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   348
static inline int tokenize(Context *ctx)
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   349
{
515
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   350
    const int rc = tokenize_ctx(ctx, &ctx->tctx);
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diff changeset
   351
465
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   352
    #if DEBUG_TOKENIZER
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diff changeset
   353
    printf("TOKENIZE: %s '%s'\n",
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   354
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
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parents:
diff changeset
   355
           (rc == FAIL) ? "FAIL" :
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
           (rc == NOFAIL) ? "NOFAIL" : "???",
515
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diff changeset
   357
           (ctx->tctx.token[0] == '\n') ? "\\n" : ctx->tctx.token);
465
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diff changeset
   358
    #endif
515
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diff changeset
   359
465
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diff changeset
   360
    return rc;
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parents:
diff changeset
   361
} // tokenize
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parents:
diff changeset
   362
0a75f98f785b Initial work on assembler. Not even close to done.
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diff changeset
   363
515
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diff changeset
   364
static int pushback_ctx(Context *ctx, TokenizerContext *tctx)
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   365
{
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   366
    if (tctx->pushedback)
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   367
        return fail(ctx, "BUG: Double pushback in parser");
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diff changeset
   368
    else
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   369
        tctx->pushedback = 1;
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diff changeset
   370
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   371
    return NOFAIL;
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   372
}
58c1a7d98176 First steps of reworking tokenizer.
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parents: 514
diff changeset
   373
490
14b6586d9c43 Fixed parsing of DCL instructions.
Ryan C. Gordon <icculus@icculus.org>
parents: 489
diff changeset
   374
static inline int pushback(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
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parents:
diff changeset
   375
{
515
58c1a7d98176 First steps of reworking tokenizer.
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parents: 514
diff changeset
   376
    const int rc = pushback_ctx(ctx, &ctx->tctx);
58c1a7d98176 First steps of reworking tokenizer.
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parents: 514
diff changeset
   377
465
0a75f98f785b Initial work on assembler. Not even close to done.
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parents:
diff changeset
   378
    #if DEBUG_TOKENIZER
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   379
    printf("PUSHBACK: %s\n",
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   380
           (rc == END_OF_STREAM) ? "END_OF_STREAM" :
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   381
           (rc == FAIL) ? "FAIL" :
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   382
           (rc == NOFAIL) ? "NOFAIL" : "???");
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
    #endif
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parents:
diff changeset
   384
515
58c1a7d98176 First steps of reworking tokenizer.
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parents: 514
diff changeset
   385
    return rc;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
} // pushback
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   387
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   389
static int nexttoken_ctx(Context *ctx, TokenizerContext *tctx,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   390
                     const int ignoreeol, const int ignorewhitespace,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   391
                     const int eolok, const int eosok)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
    int rc = NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   395
    while ((rc = tokenize_ctx(ctx, tctx)) == NOFAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
    {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   397
        if (tokeq(tctx, "\n"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
            if (ignoreeol)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
            else if (!eolok)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
                return fail(ctx, "Unexpected EOL");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   404
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   405
        else if (tokeq(tctx, " "))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   406
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
            if (ignorewhitespace)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
                continue;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   409
        } // else if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
        // skip comments...
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   412
        else if (tokeq(tctx, "//") || tokeq(tctx, ";"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
        {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   414
            while ((rc = tokenize_ctx(ctx, tctx)) == NOFAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
            {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   416
                if (tokeq(tctx, "\n"))
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   417
                {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   418
                    pushback_ctx(ctx, tctx);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   419
                    break;
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   420
                } // if
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   421
            } // while
479
f7beff48de5e nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents: 478
diff changeset
   422
            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
   423
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   424
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
        break;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   427
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   428
    if ((rc == END_OF_STREAM) && (!eosok))
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   429
        return fail(ctx, "Unexpected EOF");
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   430
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   431
    return rc;
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   432
} // nexttoken_ctx
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   433
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   434
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   435
static inline int nexttoken(Context *ctx, const int ignoreeol,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   436
                     const int ignorewhitespace, const int eolok,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   437
                     const int eosok)
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   438
{
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   439
    const int rc = nexttoken_ctx(ctx, &ctx->tctx, ignoreeol,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   440
                                 ignorewhitespace, eolok, eosok);
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   441
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
    #if DEBUG_TOKENIZER
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
    printf("NEXTTOKEN: %s '%s'\n",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
           (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
   445
           (rc == FAIL) ? "FAIL" :
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
           (rc == NOFAIL) ? "NOFAIL" : "???",
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   447
           (ctx->tctx.token[0] == '\n') ? "\\n" : ctx->tctx.token);
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
    #endif
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
    return rc;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
} // nexttoken
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   452
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
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
   455
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   456
    TokenizerContext *tctx = &ctx->tctx;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
    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
   458
    if (rc == FAIL)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
    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
   461
        return NOFAIL;  // we'll call this an EOL.
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   462
    else if (!tokeq(tctx, "\n"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
        return fail(ctx, "Endline expected");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
} // require_endline
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   468
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
   469
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   470
    TokenizerContext *tctx = &ctx->tctx;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   471
    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
   472
    if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   473
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   474
    else if (!tokeq(tctx, ","))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   475
        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
   476
    return NOFAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   477
} // require_comma
465
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
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
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
   481
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   482
    TokenizerContext *tctx = &ctx->tctx;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
    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
   484
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
    int neednum = 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   487
    int regnum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
    RegisterType regtype = REG_TYPE_TEMP;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   489
    if (tokeq(tctx, "r"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
        regtype = REG_TYPE_TEMP;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   491
    else if (tokeq(tctx, "v"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
        regtype = REG_TYPE_INPUT;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   493
    else if (tokeq(tctx, "c"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
        regtype = REG_TYPE_CONST;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   495
    else if (tokeq(tctx, "i"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
        regtype = REG_TYPE_CONSTINT;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   497
    else if (tokeq(tctx, "b"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   498
        regtype = REG_TYPE_CONSTBOOL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   499
    else if (tokeq(tctx, "oC"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   500
        regtype = REG_TYPE_COLOROUT;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   501
    else if (tokeq(tctx, "s"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   502
        regtype = REG_TYPE_SAMPLER;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   503
    else if (tokeq(tctx, "oD"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   504
        regtype = REG_TYPE_ATTROUT;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   505
    else if (tokeq(tctx, "l"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   506
        regtype = REG_TYPE_LABEL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   507
    else if (tokeq(tctx, "p"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   508
        regtype = REG_TYPE_PREDICATE;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   509
    else if (tokeq(tctx, "oDepth"))
513
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   510
    {
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   511
        regtype = REG_TYPE_DEPTHOUT;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   512
        neednum = 0;
abd9c85ba168 oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents: 512
diff changeset
   513
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   514
    else if (tokeq(tctx, "aL"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   516
        regtype = REG_TYPE_LOOP;
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
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   519
    else if (tokeq(tctx, "o"))
465
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
        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
   522
            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
   523
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   525
    else if (tokeq(tctx, "oT"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
    {
502
3cb501248990 Fixed logic error in assembler, to decide if oTx registers are available.
Ryan C. Gordon <icculus@icculus.org>
parents: 500
diff changeset
   527
        if (shader_is_vertex(ctx) && shader_version_atleast(ctx, 3, 0))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
            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
   529
        regtype = REG_TYPE_OUTPUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   531
    else if (tokeq(tctx, "a"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   533
        if (!shader_is_vertex(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
            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
   535
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   537
    else if (tokeq(tctx, "t"))
465
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 (!shader_is_pixel(ctx))
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
            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
   541
        regtype = REG_TYPE_ADDRESS;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   542
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   543
    else if (tokeq(tctx, "vPos"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   545
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   546
        regnum = (int) MISCTYPE_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   549
    else if (tokeq(tctx, "vFace"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
        regtype = REG_TYPE_MISCTYPE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
        regnum = (int) MISCTYPE_TYPE_FACE;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   555
    else if (tokeq(tctx, "oPos"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   557
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   558
        regnum = (int) RASTOUT_TYPE_POSITION;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   559
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   560
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   561
    else if (tokeq(tctx, "oFog"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   562
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   563
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   564
        regnum = (int) RASTOUT_TYPE_FOG;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   565
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   566
    } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   567
    else if (tokeq(tctx, "oPts"))
465
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
        regtype = REG_TYPE_RASTOUT;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   570
        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
   571
        neednum = 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   572
    } // else if
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
    //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
   575
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   576
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   577
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   578
        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
   579
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   580
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   581
    if (neednum)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   582
    {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   583
        // Make a temp TokenizerContext, since we need to skip whitespace here,
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   584
        //  but if the next non-whitespace token isn't '[', we'll want to get
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   585
        //  that whitespace back.
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   586
        TokenizerContext tmptctx;
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   587
        memcpy(&tmptctx, tctx, sizeof (TokenizerContext));
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   588
        if (nexttoken_ctx(ctx, &tmptctx, 0, 1, 1, 1) == FAIL)
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   589
            return FAIL;
522
3c08f4d2aa2e Fixed relative addressing parsing, again.
Ryan C. Gordon <icculus@icculus.org>
parents: 521
diff changeset
   590
        else if (tokeq(&tmptctx, "["))
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   591
            neednum = 0;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   592
    } // if
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   593
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   594
    if (neednum)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   595
    {
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   596
        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
   597
            return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   598
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   599
        uint32 ui32 = 0;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   600
        if (!ui32fromstr(tctx->token, &ui32))
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   601
            return fail(ctx, "Invalid register index");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   602
        regnum = (int) ui32;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   603
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   604
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   605
    // split up REG_TYPE_CONST
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   606
    if (regtype == REG_TYPE_CONST)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   607
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   608
        if (regnum < 2048)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   609
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   610
            regtype = REG_TYPE_CONST;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   611
            regnum -= 0;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   612
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   613
        else if (regnum < 4096)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   614
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   615
            regtype = REG_TYPE_CONST2;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   616
            regnum -= 2048;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   617
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   618
        else if (regnum < 6144)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   619
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   620
            regtype = REG_TYPE_CONST3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   621
            regnum -= 4096;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   622
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   623
        else if (regnum < 8192)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   624
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   625
            regtype = REG_TYPE_CONST4;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   626
            regnum -= 6144;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   627
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   628
        else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   629
        {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   630
            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
   631
        } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   632
    } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   633
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   634
    *rtype = regtype;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   635
    *rnum = regnum;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   636
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   637
    return NOFAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   638
} // parse_register_name
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   639
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   640
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   641
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
   642
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   643
    if (info->result_shift != 0)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   644
        return fail(ctx, "Multiple result shift modifiers");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   645
    info->result_shift = val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   646
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   647
} // set_result_shift
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   648
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   649
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   650
static int parse_destination_token(Context *ctx)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   651
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   652
    TokenizerContext *tctx = &ctx->tctx;
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   653
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   654
    DestArgInfo *info = &ctx->dest_arg;
510
f4433db86f6e Fixed wrong sizeof for a memset() call.
Ryan C. Gordon <icculus@icculus.org>
parents: 508
diff changeset
   655
    memset(info, '\0', sizeof (DestArgInfo));
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   656
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   657
    // 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
   658
    while (1)
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   659
    {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   660
        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
   661
            return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   662
        else if (tokeq(tctx, " "))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   663
            break;  // done with modifiers.
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   664
        else if (!tokeq(tctx, "_"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   665
            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
   666
        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
   667
            return FAIL;
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   668
        // !!! FIXME: this can be cleaned up when tokenizer is fixed.
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   669
        else if (tokeq(tctx, "x"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   670
        {
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   671
            if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   672
                return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   673
            else if (tokeq(tctx, "2"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   674
                set_result_shift(ctx, info, 0x1);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   675
            else if (tokeq(tctx, "4"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   676
                set_result_shift(ctx, info, 0x2);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   677
            else if (tokeq(tctx, "8"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   678
                set_result_shift(ctx, info, 0x3);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   679
            else
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   680
                return fail(ctx, "Expected modifier");
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   681
        } // else if
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   682
        // !!! FIXME: this can be cleaned up when tokenizer is fixed.
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   683
        else if (tokeq(tctx, "d"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   684
        {
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   685
            if (nexttoken(ctx, 0, 0, 0, 0) == FAIL)
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   686
                return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   687
            else if (tokeq(tctx, "8"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   688
                set_result_shift(ctx, info, 0xD);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   689
            else if (tokeq(tctx, "4"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   690
                set_result_shift(ctx, info, 0xE);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   691
            else if (tokeq(tctx, "2"))
511
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   692
                set_result_shift(ctx, info, 0xF);
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   693
            else
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   694
                return fail(ctx, "Expected modifier");
67d7efa9206b Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 510
diff changeset
   695
        } // else if
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   696
        else if (tokeq(tctx, "sat"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   697
            info->result_mod |= MOD_SATURATE;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   698
        else if (tokeq(tctx, "pp"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   699
            info->result_mod |= MOD_PP;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   700
        else if (tokeq(tctx, "centroid"))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   701
            info->result_mod |= MOD_CENTROID;
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
            return fail(ctx, "Expected modifier");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   704
    } // while
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   705
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   706
    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
   707
        return FAIL;
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
    // !!! FIXME: predicates.
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   710
    if (tokeq(tctx, "("))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   711
        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
   712
    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
   713
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   714
    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
   715
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   716
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   717
    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
   718
        return FAIL;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   719
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   720
    // !!! 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
   721
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   722
    int implicit_writemask = 0;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   723
    if (!tokeq(tctx, "."))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   724
    {
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   725
        implicit_writemask = 1;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   726
        info->writemask = 0xF;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   727
        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
   728
        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
   729
    } // if
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   730
    // !!! FIXME: Cg generates code with oDepth.z ... this is a bug, I think.
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   731
    //else if (scalar_register(ctx->shader_type, info->regtype, info->regnum))
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   732
    else if ( (scalar_register(ctx->shader_type, info->regtype, info->regnum)) && (info->regtype != REG_TYPE_DEPTHOUT) )
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   733
        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
   734
    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
   735
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   736
    else if (tokeq(tctx, ""))
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   737
        return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   738
    else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   739
    {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   740
        char *ptr = tctx->token;
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   741
        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
   742
        if (*ptr == 'x') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   743
        if (*ptr == 'y') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   744
        if (*ptr == 'z') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   745
        if (*ptr == 'w') { info->writemask3 = 1; ptr++; }
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   746
        if ((ptr == tctx->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
   747
        {
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   748
            if (*ptr == 'r') { info->writemask0 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   749
            if (*ptr == 'g') { info->writemask1 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   750
            if (*ptr == 'b') { info->writemask2 = 1; ptr++; }
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   751
            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
   752
        } // if
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   753
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   754
        if (*ptr != '\0')
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   755
            return fail(ctx, "Invalid writemask");
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   756
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   757
        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
   758
                            ((info->writemask1 & 0x1) << 1) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   759
                            ((info->writemask2 & 0x1) << 2) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   760
                            ((info->writemask3 & 0x1) << 3) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   761
    } // else
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   762
521
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   763
    // !!! FIXME: Cg generates code with oDepth.z ... this is a bug, I think.
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   764
    if (info->regtype == REG_TYPE_DEPTHOUT)
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   765
    {
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   766
        if ( (!implicit_writemask) && ((info->writemask0 + info->writemask1 +
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   767
               info->writemask2 + info->writemask3) > 1) )
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   768
            return fail(ctx, "Writemask specified for scalar register");
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   769
    } // if
57e1945104cb Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents: 519
diff changeset
   770
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   771
    info->orig_writemask = info->writemask;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   772
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   773
    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
   774
        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
   775
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   776
    ctx->tokenbuf[ctx->tokenbufpos++] =
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   777
            ( ((((uint32) 1)) << 31) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   778
              ((((uint32) info->regnum) & 0x7ff) << 0) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   779
              ((((uint32) info->relative) & 0x1) << 13) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   780
              ((((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
   781
              ((((uint32) info->result_shift) & 0xF) << 24) |
500
38ce929323c2 Fixed writemask bits in assembled bytecode.
Ryan C. Gordon <icculus@icculus.org>
parents: 499
diff changeset
   782
              ((((uint32) info->writemask) & 0xF) << 16) |
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   783
              ((((uint32) info->regtype) & 0x7) << 28) |
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   784
              ((((uint32) info->regtype) & 0x18) << 8) );
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   785
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   786
    return 1;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   787
} // parse_destination_token
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   788
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   789
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   790
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
   791
                           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
   792
                           SourceMod *srcmod)
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   793
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   794
    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
   795
        fail(ctx, "Incompatible source modifiers");
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
        *srcmod = ((negate) ? negated : norm);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   798
} // set_source_mod
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   799
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   800
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   801
static 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
   802
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   803
    TokenizerContext *tctx = &ctx->tctx;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   804
    int retval = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   805
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   806
    if (ctx->tokenbufpos >= STATICARRAYLEN(ctx->tokenbuf))
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   807
        return fail(ctx, "Too many tokens");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   808
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   809
    // 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
   810
    uint32 *token = &ctx->tokenbuf[ctx->tokenbufpos++];
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   811
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   812
    SourceMod srcmod = SRCMOD_NONE;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   813
    int negate = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   814
    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
   815
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   816
    else if (tokeq(tctx, "1"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   817
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   818
        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
   819
            return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   820
        else if (!tokeq(tctx, "-"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   821
            return fail(ctx, "Unexpected value");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   822
        else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   823
            srcmod = SRCMOD_COMPLEMENT;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   824
    } // else
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   825
    else if (tokeq(tctx, "!"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   826
        srcmod = SRCMOD_NOT;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   827
    else if (tokeq(tctx, "-"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   828
        negate = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   829
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   830
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   831
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   832
    RegisterType regtype;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   833
    int regnum;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   834
    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
   835
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   836
    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
   837
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   838
    else if (!tokeq(tctx, "_"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   839
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   840
    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
   841
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   842
    else if (tokeq(tctx, "bias"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   843
        set_source_mod(ctx, negate, SRCMOD_BIAS, SRCMOD_BIASNEGATE, &srcmod);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   844
    else if (tokeq(tctx, "bx2"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   845
        set_source_mod(ctx, negate, SRCMOD_SIGN, SRCMOD_SIGNNEGATE, &srcmod);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   846
    else if (tokeq(tctx, "x2"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   847
        set_source_mod(ctx, negate, SRCMOD_X2, SRCMOD_X2NEGATE, &srcmod);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   848
    else if (tokeq(tctx, "dz"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   849
        set_source_mod(ctx, negate, SRCMOD_DZ, SRCMOD_NONE, &srcmod);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   850
    else if (tokeq(tctx, "dw"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   851
        set_source_mod(ctx, negate, SRCMOD_DW, SRCMOD_NONE, &srcmod);
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   852
    else if (tokeq(tctx, "abs"))
472
e52d487e6d91 Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents: 470
diff changeset
   853
        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
   854
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   855
        return fail(ctx, "Invalid source modifier");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   856
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   857
    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
   858
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   859
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   860
    uint32 relative = 0;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   861
    if (!tokeq(tctx, "["))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   862
        pushback(ctx);  // not relative addressing?
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   863
    else if (!relok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   864
        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
   865
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   866
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   867
        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
   868
        if (rc == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   869
            return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   870
        retval += rc;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   871
        relative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   872
        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
   873
            return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   874
        else if (!tokeq(tctx, "+"))
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   875
            pushback(ctx);
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   876
        else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   877
            return FAIL;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   878
        else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   879
        {
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   880
            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
   881
                fail(ctx, "Relative addressing with explicit register number.");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   882
            uint32 ui32 = 0;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   883
            if (!ui32fromstr(tctx->token, &ui32))
482
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   884
                return fail(ctx, "Invalid relative addressing offset");
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   885
            regnum += (int) ui32;
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   886
        } // else
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   887
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   888
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
3f740f25bd7e Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 481
diff changeset
   889
            return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   890
        else if (!tokeq(tctx, "]"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   891
            return fail(ctx, "Expected ']'");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   892
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   893
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   894
    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
   895
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   896
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   897
    uint32 swizzle = 0;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   898
    if (!tokeq(tctx, "."))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   899
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   900
        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
   901
        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
   902
    } // if
491
bcc3c215807a Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents: 490
diff changeset
   903
    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
   904
        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
   905
    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
   906
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   907
    else if (tokeq(tctx, ""))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   908
        return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   909
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   910
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   911
        // deal with shortened form (.x = .xxxx, etc).
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   912
        if (tctx->token[1] == '\0')
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   913
            tctx->token[1] = tctx->token[2] = tctx->token[3] = tctx->token[0];
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   914
        else if (tctx->token[2] == '\0')
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   915
            tctx->token[2] = tctx->token[3] = tctx->token[1];
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   916
        else if (tctx->token[3] == '\0')
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   917
            tctx->token[3] = tctx->token[2];
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   918
        else if (tctx->token[4] != '\0')
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   919
            return fail(ctx, "Invalid swizzle");
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   920
        tctx->token[4] = '\0';
470
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 val;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   923
        int saw_xyzw = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   924
        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
   925
        int i;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   926
        for (i = 0; i < 4; i++)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   927
        {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   928
            const int component = (int) tctx->token[i];
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   929
            switch (component)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   930
            {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   931
                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
   932
                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
   933
                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
   934
                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
   935
                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
   936
                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
   937
                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
   938
                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
   939
                default: return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   940
            } // switch
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   941
            swizzle |= (val << (i * 2));
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   942
        } // for
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   943
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   944
        if (saw_xyzw && saw_rgba)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   945
            return fail(ctx, "Invalid swizzle");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   946
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   947
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   948
    *token = ( ((((uint32) 1)) << 31) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   949
               ((((uint32) regnum) & 0x7ff) << 0) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   950
               ((((uint32) relative) & 0x1) << 13) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   951
               ((((uint32) swizzle) & 0xFF) << 16) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   952
               ((((uint32) srcmod) & 0xF) << 24) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   953
               ((((uint32) regtype) & 0x7) << 28) |
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   954
               ((((uint32) regtype) & 0x18) << 8) );
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   955
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   956
    return retval;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   957
} // parse_source_token_maybe_relative
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   958
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   959
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   960
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
   961
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   962
    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
   963
} // parse_source_token
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   964
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   965
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   966
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
   967
{
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   968
    return (isfail(ctx) ? FAIL : 1);
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   969
} // parse_args_NULL
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   970
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   971
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   972
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
   973
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   974
    TokenizerContext *tctx = &ctx->tctx;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   975
    int32 negative = 1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   976
    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
   977
    cvt.si32 = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   978
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   979
    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
   980
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   981
    else if (tokeq(tctx, "-"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   982
        negative = -1;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   983
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   984
        pushback(ctx);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   985
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   986
    uint32 val = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   987
    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
   988
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   989
    else if (!ui32fromstr(tctx->token, &val))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   990
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   991
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   992
    uint32 fraction = 0;
488
1a318d011c00 Handle endlines on DEF statements.
Ryan C. Gordon <icculus@icculus.org>
parents: 487
diff changeset
   993
    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
   994
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
   995
    else if (!tokeq(tctx, "."))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   996
        pushback(ctx);  // whole number
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   997
    else if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   998
        return fail(ctx, "Expected whole number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
   999
    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
  1000
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1001
    else if (!ui32fromstr(tctx->token, &fraction))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1002
        return fail(ctx, "Expected number");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1003
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1004
    uint32 exponent = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1005
    int negexp = 0;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1006
    if (nexttoken(ctx, 0, 1, 1, 1) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1007
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1008
    else if (!tokeq(tctx, "e"))
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1009
        pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1010
    else if (!floatok)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1011
        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
  1012
    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
  1013
        return FAIL;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1014
    else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1015
    {
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1016
        if (!tokeq(tctx, "-"))
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1017
            pushback(ctx);
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1018
        else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1019
            negexp = 1;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1020
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1021
        if (nexttoken(ctx, 0, 1, 0, 0) == FAIL)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1022
            return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1023
        else if (!ui32fromstr(tctx->token, &exponent))
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1024
            return fail(ctx, "Expected exponent");
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1025
    } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1026
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1027
    if (!floatok)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1028
        cvt.si32 = ((int32) val) * negative;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1029
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1030
    {
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1031
        // !!! FIXME: this is lame.
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1032
        char buf[128];
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1033
        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
  1034
                 (uint) val, (uint) fraction);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1035
        sscanf(buf, "%f", &cvt.f);
492
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1036
        cvt.f *= (float) negative;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1037
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1038
        if (exponent)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1039
        {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1040
            int i;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1041
            if (negexp)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1042
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1043
                for (i = 0; i > exponent; i--)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1044
                    cvt.f /= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1045
            } // if
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1046
            else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1047
            {
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1048
                for (i = 0; i < exponent; i++)
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1049
                    cvt.f *= 10.0f;
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1050
            } // else
29bfa3448549 Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents: 491
diff changeset
  1051
        } // if
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1052
    } // else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1053
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1054
    *token = cvt.ui32;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1055
    return NOFAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1056
} // parse_num
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1057
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
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
  1060
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1061
    if (parse_destination_token(ctx) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1062
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1063
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1064
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1065
    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
  1066
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1067
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1068
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1069
    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
  1070
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1071
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1072
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1073
    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
  1074
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1075
    else if (require_comma(ctx) == FAIL)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1076
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1077
    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
  1078
        return FAIL;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1079
    return 6;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1080
} // parse_args_DEFx
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1081
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1082
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1083
static int parse_args_DEF(Context *ctx)
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
    return parse_args_DEFx(ctx, 1);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1086
} // parse_args_DEF
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1087
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1088
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1089
static int parse_args_DEFI(Context *ctx)
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1090
{
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1091
    return parse_args_DEFx(ctx, 0);
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1092
} // parse_args_DEFI
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1093
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1094
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1095
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
  1096
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1097
    TokenizerContext *tctx = &ctx->tctx;
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1098
    if (parse_destination_token(ctx) == FAIL)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1099
        return FAIL;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1100
    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
  1101
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1102
    else if (!tokeq(tctx, ","))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1103
        return fail(ctx, "Expected ','");
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1104
    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
  1105
        return FAIL;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1106
    else if (tokeq(tctx, "true"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1107
        ctx->tokenbuf[ctx->tokenbufpos++] = 1;
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1108
    else if (tokeq(tctx, "false"))
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1109
        ctx->tokenbuf[ctx->tokenbufpos++] = 0;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1110
    else
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1111
        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
  1112
    return 3;
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1113
} // parse_args_DEFB
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1114
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1115
504
d79ae3b98f47 Fixed dcl_2d usage.
Ryan C. Gordon <icculus@icculus.org>
parents: 502
diff changeset
  1116
static int parse_dcl_usage(Context *ctx, uint32 *val, int *issampler)
465
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1117
{
515
58c1a7d98176 First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents: 514
diff changeset
  1118
    TokenizerContext *tctx = &ctx->tctx;
470
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1119
    int i;
7d84d3452125 Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents: 465
diff changeset
  1120
    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
  1121
    static const char *usagestrs[] = {
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1122
        "position", "blendweight", "blendindices", "normal", "psize",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1123
        "texcoord", "tangent", "binormal", "tessfactor", "positiont",
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
  1124
        "color", "fog", "depth", "sample"
0a75f98f785b Initial work on assembler. Not even close to done.
Ryan C. &