author  Ryan C. Gordon <icculus@icculus.org> 
Tue, 03 Feb 2009 00:31:34 0500  
changeset 536  5af65fe6e917 
parent 532  19e2f562b9ce 
child 539  8a26cb9a148f 
permissions  rwrr 
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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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532  10 
// !!! FIXME: this should report all errors, not quit on the first fail(). 
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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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498  17 
// !!! 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 SourcePos 
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{ 
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const char *filename; 
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uint32 line; 
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} SourcePos; 
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// Context...this is state that changes as we assemble a shader... 
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typedef struct Context 
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{ 
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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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SourcePos *token_to_source; 
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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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} Context; 
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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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138 
} // shader_version_atleast 
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139 

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140 
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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143 
} // shader_is_pixel 
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144 

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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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149 

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150 

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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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159 

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160 

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static inline void add_token_sourcepos(Context *ctx, const size_t idx) 
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{ 
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ctx>token_to_source[idx].line = ctx>tctx.linenum; 
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ctx>token_to_source[idx].filename = NULL; 
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} // add_token_sourcepos 
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166 

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167 

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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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172 

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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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178 

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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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186 

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ptr = Malloc(ctx, newsize * sizeof (SourcePos)); 
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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_source, ctx>output_len * sizeof (SourcePos)); 
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Free(ctx, ctx>token_to_source); 
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ctx>token_to_source = (SourcePos *) ptr; 
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194 

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ctx>output_allocation = newsize; 
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} // if 
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197 

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ctx>output[ctx>output_len] = token; 
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add_token_sourcepos(ctx, ctx>output_len); 
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ctx>output_len++; 
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201 
} // output_token_noswap 
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202 

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203 

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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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208 

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209 

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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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215 
{ 
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const uint32 tokencount = (len / 4) + ((len % 4) ? 1 : 0); 
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217 
output_token(ctx, 0xFFFE  (tokencount << 16)); 
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218 
while (len >= 4) 
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219 
{ 
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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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223 
} // while 
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224 

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225 
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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230 
output_token_noswap(ctx, overflow.ui32); 
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231 
} // if 
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} // else if 
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} // output_comment_bytes 
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234 

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235 

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236 
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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239 
} // output_comment_string 
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240 

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241 

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static int tokenize_ctx(Context *ctx, TokenizerContext *tctx) 
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{ 
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244 
int idx = 0; 
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245 

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246 
if (isfail(ctx)) 
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247 
return FAIL; 
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248 

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249 
if (tctx>pushedback) 
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250 
{ 
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tctx>pushedback = 0; 
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252 
return NOFAIL; 
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253 
} // if 
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254 

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255 
if (tctx>on_endline) 
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{ 
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tctx>on_endline = 0; 
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tctx>linenum++; // passed a newline, update. 
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259 
} // if 
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260 

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261 
while (1) 
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{ 
477  263 
// !!! FIXME: carefully crafted (but legal) comments can trigger this. 
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264 
if (idx >= sizeof (tctx>token)) 
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265 
return fail(ctx, "buffer overflow"); 
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266 

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char ch = *tctx>source; 
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if (ch == '\t') 
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ch = ' '; // collapse tabs into single spaces. 
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else if (ch == '\r') 
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{ 
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if (tctx>source[1] == '\n') 
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continue; // ignore '\r' if this is "\r\n" ... 
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ch = '\n'; 
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} // else if 
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if ((ch >= '0') && (ch <= '9')) 
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{ 
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// starting a number, but rest of current token was not number. 
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if ((idx > 0) && ((tctx>prevchar < '0')  (tctx>prevchar > '9'))) 
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{ 
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tctx>token[idx++] = '\0'; 
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return NOFAIL; 
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} // if 
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} // if 
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else 
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{ 
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// starting a nonnumber, but rest of current token was numbers. 
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if ((idx > 0) && ((tctx>prevchar >= '0') && (tctx>prevchar <= '9'))) 
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{ 
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tctx>token[idx++] = '\0'; 
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return NOFAIL; 
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} // if 
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294 
} // else 
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295 

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switch (ch) 
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{ 
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case '/': 
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case ';': // !!! FIXME: comment, right? 
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if (idx != 0) // finish off existing token. 
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tctx>token[idx] = '\0'; 
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else 
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{ 
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tctx>token[idx++] = ch; 
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tctx>source++; 
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if ((ch == '/') && (*tctx>source == '/')) 
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{ 
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tctx>token[idx++] = '/'; 
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tctx>source++; 
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310 
} // if 
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tctx>token[idx++] = '\0'; 
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312 
} // else 
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return NOFAIL; 
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314 

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case ' ': 
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if (tctx>prevchar == ' ') 
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break; // multiple whitespace collapses into one. 
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318 
// intentional fallthrough... 
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319 

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case '_': 
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case '[': 
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case ']': 
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case '(': 
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case ')': 
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case '!': 
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case '+': 
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case '': 
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case ',': 
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case '.': 
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330 
case '\n': 
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331 
if (idx != 0) // finish off existing token. 
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tctx>token[idx] = '\0'; 
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else // this is a token in itself. 
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{ 
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335 
if (ch == '\n') 
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tctx>on_endline = 1; 
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tctx>source++; 
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tctx>token[idx++] = ch; 
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tctx>token[idx++] = '\0'; 
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340 
} // else 
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341 
return NOFAIL; 
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342 

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343 
case '\0': 
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tctx>token[idx] = '\0'; 
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if (idx != 0) // had any chars? It's a token. 
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346 
return NOFAIL; 
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347 
return END_OF_STREAM; 
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348 

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349 
default: 
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tctx>source++; 
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tctx>token[idx++] = ch; 
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352 
break; 
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353 
} // switch 
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354 

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tctx>prevchar = ch; 
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356 
} // while 
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357 

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358 
return fail(ctx, "???"); // shouldn't hit this. 
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359 
} // tokenize_ctx 
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360 

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361 

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362 
static inline int tokenize(Context *ctx) 
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363 
{ 
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364 
const int rc = tokenize_ctx(ctx, &ctx>tctx); 
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365 

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366 
#if DEBUG_TOKENIZER 
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367 
printf("TOKENIZE: %s '%s'\n", 
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368 
(rc == END_OF_STREAM) ? "END_OF_STREAM" : 
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369 
(rc == FAIL) ? "FAIL" : 
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370 
(rc == NOFAIL) ? "NOFAIL" : "???", 
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371 
(ctx>tctx.token[0] == '\n') ? "\\n" : ctx>tctx.token); 
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372 
#endif 
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373 

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374 
return rc; 
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375 
} // tokenize 
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376 

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377 

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378 
static int pushback_ctx(Context *ctx, TokenizerContext *tctx) 
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379 
{ 
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380 
if (tctx>pushedback) 
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381 
return fail(ctx, "BUG: Double pushback in parser"); 
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382 
else 
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383 
tctx>pushedback = 1; 
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384 

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385 
return NOFAIL; 
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386 
} 
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387 

490
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388 
static inline int pushback(Context *ctx) 
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389 
{ 
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390 
const int rc = pushback_ctx(ctx, &ctx>tctx); 
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391 

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392 
#if DEBUG_TOKENIZER 
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393 
printf("PUSHBACK: %s\n", 
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394 
(rc == END_OF_STREAM) ? "END_OF_STREAM" : 
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395 
(rc == FAIL) ? "FAIL" : 
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396 
(rc == NOFAIL) ? "NOFAIL" : "???"); 
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397 
#endif 
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398 

515
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diff
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399 
return rc; 
465
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400 
} // pushback 
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parents:
diff
changeset

401 

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parents:
diff
changeset

402 

515
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diff
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403 
static int nexttoken_ctx(Context *ctx, TokenizerContext *tctx, 
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diff
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404 
const int ignoreeol, const int ignorewhitespace, 
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diff
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405 
const int eolok, const int eosok) 
465
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parents:
diff
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406 
{ 
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diff
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407 
int rc = NOFAIL; 
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parents:
diff
changeset

408 

515
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diff
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409 
while ((rc = tokenize_ctx(ctx, tctx)) == NOFAIL) 
465
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parents:
diff
changeset

410 
{ 
515
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diff
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411 
if (tokeq(tctx, "\n")) 
465
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parents:
diff
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412 
{ 
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parents:
diff
changeset

413 
if (ignoreeol) 
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parents:
diff
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414 
continue; 
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parents:
diff
changeset

415 
else if (!eolok) 
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parents:
diff
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416 
return fail(ctx, "Unexpected EOL"); 
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parents:
diff
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417 
} // if 
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parents:
diff
changeset

418 

515
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diff
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419 
else if (tokeq(tctx, " ")) 
465
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parents:
diff
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420 
{ 
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parents:
diff
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421 
if (ignorewhitespace) 
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parents:
diff
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422 
continue; 
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diff
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423 
} // else if 
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parents:
diff
changeset

424 

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parents:
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425 
// skip comments... 
515
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diff
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426 
else if (tokeq(tctx, "//")  tokeq(tctx, ";")) 
465
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parents:
diff
changeset

427 
{ 
515
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diff
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428 
while ((rc = tokenize_ctx(ctx, tctx)) == NOFAIL) 
465
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parents:
diff
changeset

429 
{ 
515
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diff
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430 
if (tokeq(tctx, "\n")) 
479
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nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents:
478
diff
changeset

431 
{ 
515
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diff
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432 
pushback_ctx(ctx, tctx); 
465
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parents:
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433 
break; 
479
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nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents:
478
diff
changeset

434 
} // if 
465
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435 
} // while 
479
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nexttoken() needs to report the ending newline when throwing away comments.
Ryan C. Gordon <icculus@icculus.org>
parents:
478
diff
changeset

436 
continue; // pick up from newline, go again. 
465
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diff
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437 
} // if 
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parents:
diff
changeset

438 

0a75f98f785b
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parents:
diff
changeset

439 
break; 
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parents:
diff
changeset

440 
} // while 
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parents:
diff
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441 

515
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diff
changeset

442 
if ((rc == END_OF_STREAM) && (!eosok)) 
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First steps of reworking tokenizer.
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diff
changeset

443 
return fail(ctx, "Unexpected EOF"); 
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First steps of reworking tokenizer.
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parents:
514
diff
changeset

444 

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diff
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445 
return rc; 
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First steps of reworking tokenizer.
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parents:
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diff
changeset

446 
} // nexttoken_ctx 
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parents:
514
diff
changeset

447 

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parents:
514
diff
changeset

448 

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diff
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449 
static inline int nexttoken(Context *ctx, const int ignoreeol, 
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diff
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450 
const int ignorewhitespace, const int eolok, 
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diff
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451 
const int eosok) 
58c1a7d98176
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parents:
514
diff
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452 
{ 
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diff
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453 
const int rc = nexttoken_ctx(ctx, &ctx>tctx, ignoreeol, 
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diff
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454 
ignorewhitespace, eolok, eosok); 
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diff
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455 

465
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parents:
diff
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456 
#if DEBUG_TOKENIZER 
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parents:
diff
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457 
printf("NEXTTOKEN: %s '%s'\n", 
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parents:
diff
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458 
(rc == END_OF_STREAM) ? "END_OF_STREAM" : 
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parents:
diff
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459 
(rc == FAIL) ? "FAIL" : 
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parents:
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460 
(rc == NOFAIL) ? "NOFAIL" : "???", 
515
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diff
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461 
(ctx>tctx.token[0] == '\n') ? "\\n" : ctx>tctx.token); 
465
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parents:
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462 
#endif 
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parents:
diff
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463 

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parents:
diff
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464 
return rc; 
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parents:
diff
changeset

465 
} // nexttoken 
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parents:
diff
changeset

466 

0a75f98f785b
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parents:
diff
changeset

467 

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parents:
diff
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468 
static int require_endline(Context *ctx) 
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parents:
diff
changeset

469 
{ 
515
58c1a7d98176
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diff
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470 
TokenizerContext *tctx = &ctx>tctx; 
465
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parents:
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471 
const int rc = nexttoken(ctx, 0, 1, 1, 1); 
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parents:
diff
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472 
if (rc == FAIL) 
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parents:
diff
changeset

473 
return FAIL; 
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parents:
diff
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474 
else if (rc == END_OF_STREAM) 
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parents:
diff
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475 
return NOFAIL; // we'll call this an EOL. 
515
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parents:
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diff
changeset

476 
else if (!tokeq(tctx, "\n")) 
465
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parents:
diff
changeset

477 
return fail(ctx, "Endline expected"); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

478 
return NOFAIL; 
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

479 
} // require_endline 
0a75f98f785b
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

480 

0a75f98f785b
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

481 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

482 
static int require_comma(Context *ctx) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

483 
{ 
515
58c1a7d98176
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parents:
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diff
changeset

484 
TokenizerContext *tctx = &ctx>tctx; 
470
7d84d3452125
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parents:
465
diff
changeset

485 
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

486 
if (rc == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

487 
return FAIL; 
515
58c1a7d98176
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parents:
514
diff
changeset

488 
else if (!tokeq(tctx, ",")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

489 
return fail(ctx, "Comma expected"); 
465
0a75f98f785b
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

490 
return NOFAIL; 
470
7d84d3452125
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Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

491 
} // require_comma 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

492 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

493 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

494 
static int parse_register_name(Context *ctx, RegisterType *rtype, int *rnum) 
0a75f98f785b
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

495 
{ 
515
58c1a7d98176
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parents:
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diff
changeset

496 
TokenizerContext *tctx = &ctx>tctx; 
465
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Initial work on assembler. Not even close to done.
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parents:
diff
changeset

497 
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

498 
return FAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

499 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

500 
int neednum = 1; 
0a75f98f785b
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

501 
int regnum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

502 
RegisterType regtype = REG_TYPE_TEMP; 
515
58c1a7d98176
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parents:
514
diff
changeset

503 
if (tokeq(tctx, "r")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

504 
regtype = REG_TYPE_TEMP; 
515
58c1a7d98176
First steps of reworking tokenizer.
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parents:
514
diff
changeset

505 
else if (tokeq(tctx, "v")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

506 
regtype = REG_TYPE_INPUT; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

507 
else if (tokeq(tctx, "c")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

508 
regtype = REG_TYPE_CONST; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

509 
else if (tokeq(tctx, "i")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

510 
regtype = REG_TYPE_CONSTINT; 
515
58c1a7d98176
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Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

511 
else if (tokeq(tctx, "b")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

512 
regtype = REG_TYPE_CONSTBOOL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

513 
else if (tokeq(tctx, "oC")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

514 
regtype = REG_TYPE_COLOROUT; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

515 
else if (tokeq(tctx, "s")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

516 
regtype = REG_TYPE_SAMPLER; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

517 
else if (tokeq(tctx, "oD")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

518 
regtype = REG_TYPE_ATTROUT; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

519 
else if (tokeq(tctx, "l")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
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parents:
diff
changeset

520 
regtype = REG_TYPE_LABEL; 
515
58c1a7d98176
First steps of reworking tokenizer.
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parents:
514
diff
changeset

521 
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

522 
regtype = REG_TYPE_PREDICATE; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

523 
else if (tokeq(tctx, "oDepth")) 
513
abd9c85ba168
oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents:
512
diff
changeset

524 
{ 
abd9c85ba168
oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents:
512
diff
changeset

525 
regtype = REG_TYPE_DEPTHOUT; 
abd9c85ba168
oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents:
512
diff
changeset

526 
neednum = 0; 
abd9c85ba168
oDepth register doesn't have an index.
Ryan C. Gordon <icculus@icculus.org>
parents:
512
diff
changeset

527 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

528 
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

529 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

530 
regtype = REG_TYPE_LOOP; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

531 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

532 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

533 
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

534 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

535 
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

536 
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

537 
regtype = REG_TYPE_OUTPUT; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

538 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

539 
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

540 
{ 
502
3cb501248990
Fixed logic error in assembler, to decide if oTx registers are available.
Ryan C. Gordon <icculus@icculus.org>
parents:
500
diff
changeset

541 
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

542 
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

543 
regtype = REG_TYPE_OUTPUT; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

544 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

545 
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

546 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

547 
if (!shader_is_vertex(ctx)) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

548 
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

549 
regtype = REG_TYPE_ADDRESS; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

550 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

551 
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

552 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

553 
if (!shader_is_pixel(ctx)) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

554 
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

555 
regtype = REG_TYPE_ADDRESS; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

556 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

557 
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

558 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

559 
regtype = REG_TYPE_MISCTYPE; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

560 
regnum = (int) MISCTYPE_TYPE_POSITION; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

561 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

562 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

563 
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

564 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

565 
regtype = REG_TYPE_MISCTYPE; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

566 
regnum = (int) MISCTYPE_TYPE_FACE; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

567 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

568 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

569 
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

570 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

571 
regtype = REG_TYPE_RASTOUT; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

572 
regnum = (int) RASTOUT_TYPE_POSITION; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

573 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

574 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

575 
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

576 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

577 
regtype = REG_TYPE_RASTOUT; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

578 
regnum = (int) RASTOUT_TYPE_FOG; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

579 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

580 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

581 
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

582 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

583 
regtype = REG_TYPE_RASTOUT; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

584 
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

585 
neednum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

586 
} // else if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

587 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

588 
//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

589 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

590 
else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

591 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

592 
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

593 
} // else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

594 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

595 
if (neednum) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

596 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

597 
// 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

598 
// but if the next nonwhitespace token isn't '[', we'll want to get 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

599 
// that whitespace back. 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

600 
TokenizerContext tmptctx; 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

601 
memcpy(&tmptctx, tctx, sizeof (TokenizerContext)); 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

602 
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

603 
return FAIL; 
522
3c08f4d2aa2e
Fixed relative addressing parsing, again.
Ryan C. Gordon <icculus@icculus.org>
parents:
521
diff
changeset

604 
else if (tokeq(&tmptctx, "[")) 
482
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

605 
neednum = 0; 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

606 
} // if 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

607 

3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

608 
if (neednum) 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

609 
{ 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

610 
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

611 
return FAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

612 

482
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

613 
uint32 ui32 = 0; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

614 
if (!ui32fromstr(tctx>token, &ui32)) 
482
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

615 
return fail(ctx, "Invalid register index"); 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

616 
regnum = (int) ui32; 
465
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 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

619 
// split up REG_TYPE_CONST 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

620 
if (regtype == REG_TYPE_CONST) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

621 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

622 
if (regnum < 2048) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

623 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

624 
regtype = REG_TYPE_CONST; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

625 
regnum = 0; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

626 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

627 
else if (regnum < 4096) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

628 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

629 
regtype = REG_TYPE_CONST2; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

630 
regnum = 2048; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

631 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

632 
else if (regnum < 6144) 
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 
regtype = REG_TYPE_CONST3; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

635 
regnum = 4096; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

636 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

637 
else if (regnum < 8192) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

638 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

639 
regtype = REG_TYPE_CONST4; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

640 
regnum = 6144; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

641 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

642 
else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

643 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

644 
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

645 
} // else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

646 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

647 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

648 
*rtype = regtype; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

649 
*rnum = regnum; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

650 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

651 
return NOFAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

652 
} // parse_register_name 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

653 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

654 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

655 
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

656 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

657 
if (info>result_shift != 0) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

658 
return fail(ctx, "Multiple result shift modifiers"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

659 
info>result_shift = val; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

660 
return NOFAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

661 
} // set_result_shift 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

662 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

663 

515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

664 
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

665 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

666 
TokenizerContext *tctx = &ctx>tctx; 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

667 

58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

668 
DestArgInfo *info = &ctx>dest_arg; 
510
f4433db86f6e
Fixed wrong sizeof for a memset() call.
Ryan C. Gordon <icculus@icculus.org>
parents:
508
diff
changeset

669 
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

670 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

671 
// 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

672 
while (1) 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

673 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

674 
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

675 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

676 
else if (tokeq(tctx, " ")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

677 
break; // done with modifiers. 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

678 
else if (!tokeq(tctx, "_")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

679 
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

680 
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

681 
return FAIL; 
511
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, "x")) 
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, "2")) 
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, 0x1); 
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, 0x2); 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

691 
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

692 
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

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 
67d7efa9206b
Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
510
diff
changeset

696 
// !!! 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

697 
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

698 
{ 
67d7efa9206b
Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
510
diff
changeset

699 
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

700 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

701 
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

702 
set_result_shift(ctx, info, 0xD); 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

703 
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

704 
set_result_shift(ctx, info, 0xE); 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

705 
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

706 
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

707 
else 
67d7efa9206b
Corrected parsing of result modifiers for my stupid tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
510
diff
changeset

708 
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

709 
} // else if 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

710 
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

711 
info>result_mod = MOD_SATURATE; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

712 
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

713 
info>result_mod = MOD_PP; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

714 
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

715 
info>result_mod = MOD_CENTROID; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

716 
else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

717 
return fail(ctx, "Expected modifier"); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

718 
} // while 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

719 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

720 
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

721 
return FAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

722 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

723 
// !!! FIXME: predicates. 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

724 
if (tokeq(tctx, "(")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

725 
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

726 
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

727 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

728 
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

729 
return FAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

730 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

731 
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

732 
return FAIL; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

733 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

734 
// !!! 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

735 

521
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

736 
int implicit_writemask = 0; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

737 
if (!tokeq(tctx, ".")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

738 
{ 
521
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

739 
implicit_writemask = 1; 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

740 
info>writemask = 0xF; 
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 = 1; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

742 
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

743 
} // if 
521
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

744 
// !!! 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

745 
//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

746 
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

747 
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

748 
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

749 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

750 
else if (tokeq(tctx, "")) 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

751 
return fail(ctx, "Invalid writemask"); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

752 
else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

753 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

754 
char *ptr = tctx>token; 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

755 
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

756 
if (*ptr == 'x') { info>writemask0 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

757 
if (*ptr == 'y') { info>writemask1 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

758 
if (*ptr == 'z') { info>writemask2 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

759 
if (*ptr == 'w') { info>writemask3 = 1; ptr++; } 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

760 
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

761 
{ 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

762 
if (*ptr == 'r') { info>writemask0 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

763 
if (*ptr == 'g') { info>writemask1 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

764 
if (*ptr == 'b') { info>writemask2 = 1; ptr++; } 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

765 
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

766 
} // if 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

767 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

768 
if (*ptr != '\0') 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

769 
return fail(ctx, "Invalid writemask"); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

770 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

771 
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

772 
((info>writemask1 & 0x1) << 1)  
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

773 
((info>writemask2 & 0x1) << 2)  
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

774 
((info>writemask3 & 0x1) << 3) ); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

775 
} // else 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

776 

521
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

777 
// !!! 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

778 
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

779 
{ 
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

780 
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

781 
info>writemask2 + info>writemask3) > 1) ) 
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

782 
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

783 
} // if 
57e1945104cb
Workaround for incorrect assembly code generated by Cg.
Ryan C. Gordon <icculus@icculus.org>
parents:
519
diff
changeset

784 

465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

785 
info>orig_writemask = info>writemask; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

786 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

787 
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

788 
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

789 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

790 
ctx>tokenbuf[ctx>tokenbufpos++] = 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

791 
( ((((uint32) 1)) << 31)  
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

792 
((((uint32) info>regnum) & 0x7ff) << 0)  
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

793 
((((uint32) info>relative) & 0x1) << 13)  
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

794 
((((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

795 
((((uint32) info>result_shift) & 0xF) << 24)  
500
38ce929323c2
Fixed writemask bits in assembled bytecode.
Ryan C. Gordon <icculus@icculus.org>
parents:
499
diff
changeset

796 
((((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

797 
((((uint32) info>regtype) & 0x7) << 28)  
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

798 
((((uint32) info>regtype) & 0x18) << 8) ); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

799 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

800 
return 1; 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

801 
} // parse_destination_token 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

802 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

803 

472
e52d487e6d91
Bunch More Work on the assembler. Feature complete now?
Ryan C. Gordon <icculus@icculus.org>
parents:
470
diff
changeset

804 
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

805 
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

806 
SourceMod *srcmod) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

807 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

808 
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

809 
fail(ctx, "Incompatible source modifiers"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

810 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

811 
*srcmod = ((negate) ? negated : norm); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

812 
} // set_source_mod 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

813 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

814 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

815 
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

816 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

817 
TokenizerContext *tctx = &ctx>tctx; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

818 
int retval = 1; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

819 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

820 
if (ctx>tokenbufpos >= STATICARRAYLEN(ctx>tokenbuf)) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

821 
return fail(ctx, "Too many tokens"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

822 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

823 
// 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

824 
uint32 *token = &ctx>tokenbuf[ctx>tokenbufpos++]; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

825 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

826 
SourceMod srcmod = SRCMOD_NONE; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

827 
int negate = 0; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

828 
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

829 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

830 
else if (tokeq(tctx, "1")) 
470
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 
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

833 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

834 
else if (!tokeq(tctx, "")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

835 
return fail(ctx, "Unexpected value"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

836 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

837 
srcmod = SRCMOD_COMPLEMENT; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

838 
} // else 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

839 
else if (tokeq(tctx, "!")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

840 
srcmod = SRCMOD_NOT; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

841 
else if (tokeq(tctx, "")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

842 
negate = 1; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

843 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

844 
pushback(ctx); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

845 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

846 
RegisterType regtype; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

847 
int regnum; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

848 
if (parse_register_name(ctx, ®type, ®num) == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

849 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

850 
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

851 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

852 
else if (!tokeq(tctx, "_")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

853 
pushback(ctx); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

854 
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

855 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

856 
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

857 
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

858 
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

859 
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

860 
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

861 
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

862 
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

863 
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

864 
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

865 
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

866 
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

867 
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

868 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

869 
return fail(ctx, "Invalid source modifier"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

870 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

871 
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

872 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

873 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

874 
uint32 relative = 0; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

875 
if (!tokeq(tctx, "[")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

876 
pushback(ctx); // not relative addressing? 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

877 
else if (!relok) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

878 
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

879 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

880 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

881 
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

882 
if (rc == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

883 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

884 
retval += rc; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

885 
relative = 1; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

886 
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

887 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

888 
else if (!tokeq(tctx, "+")) 
482
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

889 
pushback(ctx); 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

890 
else if (nexttoken(ctx, 0, 1, 0, 0) == FAIL) 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

891 
return FAIL; 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

892 
else 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

893 
{ 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

894 
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

895 
fail(ctx, "Relative addressing with explicit register number."); 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

896 
uint32 ui32 = 0; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

897 
if (!ui32fromstr(tctx>token, &ui32)) 
482
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

898 
return fail(ctx, "Invalid relative addressing offset"); 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

899 
regnum += (int) ui32; 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

900 
} // else 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

901 

3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

902 
if (nexttoken(ctx, 0, 1, 0, 0) == FAIL) 
3f740f25bd7e
Fixed relative addressing parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
481
diff
changeset

903 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

904 
else if (!tokeq(tctx, "]")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

905 
return fail(ctx, "Expected ']'"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

906 
} // else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

907 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

908 
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

909 
return FAIL; 
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 
uint32 swizzle = 0; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

912 
if (!tokeq(tctx, ".")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

913 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

914 
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

915 
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

916 
} // if 
491
bcc3c215807a
Fixed wrong data from scalar_register().
Ryan C. Gordon <icculus@icculus.org>
parents:
490
diff
changeset

917 
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

918 
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

919 
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

920 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

921 
else if (tokeq(tctx, "")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

922 
return fail(ctx, "Invalid swizzle"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

923 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

924 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

925 
// deal with shortened form (.x = .xxxx, etc). 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

926 
if (tctx>token[1] == '\0') 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

927 
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

928 
else if (tctx>token[2] == '\0') 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

929 
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

930 
else if (tctx>token[3] == '\0') 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

931 
tctx>token[3] = tctx>token[2]; 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

932 
else if (tctx>token[4] != '\0') 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

933 
return fail(ctx, "Invalid swizzle"); 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

934 
tctx>token[4] = '\0'; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

935 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

936 
uint32 val; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

937 
int saw_xyzw = 0; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

938 
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

939 
int i; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

940 
for (i = 0; i < 4; i++) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

941 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

942 
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

943 
switch (component) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

944 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

945 
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

946 
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

947 
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

948 
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

949 
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

950 
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

951 
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

952 
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

953 
default: return fail(ctx, "Invalid swizzle"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

954 
} // switch 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

955 
swizzle = (val << (i * 2)); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

956 
} // for 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

957 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

958 
if (saw_xyzw && saw_rgba) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

959 
return fail(ctx, "Invalid swizzle"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

960 
} // else 
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 
*token = ( ((((uint32) 1)) << 31)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

963 
((((uint32) regnum) & 0x7ff) << 0)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

964 
((((uint32) relative) & 0x1) << 13)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

965 
((((uint32) swizzle) & 0xFF) << 16)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

966 
((((uint32) srcmod) & 0xF) << 24)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

967 
((((uint32) regtype) & 0x7) << 28)  
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

968 
((((uint32) regtype) & 0x18) << 8) ); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

969 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

970 
return retval; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

971 
} // parse_source_token_maybe_relative 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

972 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

973 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

974 
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

975 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

976 
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

977 
} // parse_source_token 
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 

465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

980 
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

981 
{ 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

982 
return (isfail(ctx) ? FAIL : 1); 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

983 
} // parse_args_NULL 
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

984 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

985 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

986 
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

987 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

988 
TokenizerContext *tctx = &ctx>tctx; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

989 
int32 negative = 1; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

990 
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

991 
cvt.si32 = 0; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

992 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

993 
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

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 
negative = 1; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

997 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

998 
pushback(ctx); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

999 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1000 
uint32 val = 0; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1001 
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

1002 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1003 
else if (!ui32fromstr(tctx>token, &val)) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1004 
return fail(ctx, "Expected number"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1005 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1006 
uint32 fraction = 0; 
488
1a318d011c00
Handle endlines on DEF statements.
Ryan C. Gordon <icculus@icculus.org>
parents:
487
diff
changeset

1007 
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

1008 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1009 
else if (!tokeq(tctx, ".")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1010 
pushback(ctx); // whole number 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1011 
else if (!floatok) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1012 
return fail(ctx, "Expected whole number"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1013 
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

1014 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1015 
else if (!ui32fromstr(tctx>token, &fraction)) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1016 
return fail(ctx, "Expected number"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1017 

492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1018 
uint32 exponent = 0; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1019 
int negexp = 0; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1020 
if (nexttoken(ctx, 0, 1, 1, 1) == FAIL) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1021 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1022 
else if (!tokeq(tctx, "e")) 
492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1023 
pushback(ctx); 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1024 
else if (!floatok) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1025 
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

1026 
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

1027 
return FAIL; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1028 
else 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1029 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1030 
if (!tokeq(tctx, "")) 
492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1031 
pushback(ctx); 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1032 
else 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1033 
negexp = 1; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1034 

29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1035 
if (nexttoken(ctx, 0, 1, 0, 0) == FAIL) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1036 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1037 
else if (!ui32fromstr(tctx>token, &exponent)) 
492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1038 
return fail(ctx, "Expected exponent"); 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1039 
} // else 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1040 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1041 
if (!floatok) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1042 
cvt.si32 = ((int32) val) * negative; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1043 
else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1044 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1045 
// !!! FIXME: this is lame. 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1046 
char buf[128]; 
492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1047 
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

1048 
(uint) val, (uint) fraction); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1049 
sscanf(buf, "%f", &cvt.f); 
492
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1050 
cvt.f *= (float) negative; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1051 

29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1052 
if (exponent) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1053 
{ 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1054 
int i; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1055 
if (negexp) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1056 
{ 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1057 
for (i = 0; i > exponent; i) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1058 
cvt.f /= 10.0f; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1059 
} // if 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1060 
else 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1061 
{ 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1062 
for (i = 0; i < exponent; i++) 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1063 
cvt.f *= 10.0f; 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1064 
} // else 
29bfa3448549
Handle exponents in number parsing.
Ryan C. Gordon <icculus@icculus.org>
parents:
491
diff
changeset

1065 
} // if 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1066 
} // else 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1067 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1068 
*token = cvt.ui32; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1069 
return NOFAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1070 
} // parse_num 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1071 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1072 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1073 
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

1074 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1075 
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

1076 
return FAIL; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1077 
else if (require_comma(ctx) == 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 
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

1080 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1081 
else if (require_comma(ctx) == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1082 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1083 
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

1084 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1085 
else if (require_comma(ctx) == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1086 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1087 
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

1088 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1089 
else if (require_comma(ctx) == FAIL) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1090 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1091 
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

1092 
return FAIL; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1093 
return 6; 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1094 
} // parse_args_DEFx 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

1095 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1096 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1097 
static int parse_args_DEF(Context *ctx) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1098 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1099 
return parse_args_DEFx(ctx, 1); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1100 
} // parse_args_DEF 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

1101 

470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1102 

7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1103 
static int parse_args_DEFI(Context *ctx) 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1104 
{ 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1105 
return parse_args_DEFx(ctx, 0); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1106 
} // parse_args_DEFI 
465
0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

1107 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

1108 

0a75f98f785b
Initial work on assembler. Not even close to done.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset

1109 
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

1110 
{ 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1111 
TokenizerContext *tctx = &ctx>tctx; 
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1112 
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

1113 
return FAIL; 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1114 
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

1115 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1116 
else if (!tokeq(tctx, ",")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1117 
return fail(ctx, "Expected ','"); 
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1118 
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

1119 
return FAIL; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1120 
else if (tokeq(tctx, "true")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1121 
ctx>tokenbuf[ctx>tokenbufpos++] = 1; 
515
58c1a7d98176
First steps of reworking tokenizer.
Ryan C. Gordon <icculus@icculus.org>
parents:
514
diff
changeset

1122 
else if (tokeq(tctx, "false")) 
470
7d84d3452125
Bunch More Work on the assembler.
Ryan C. Gordon <icculus@icculus.org>
parents:
465
diff
changeset

1123 
ctx>tokenbuf[ctx>tokenbufpos++] = 0; 
