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/************************************************************************** |
* |
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
* All Rights Reserved. |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the |
* "Software"), to deal in the Software without restriction, including |
* without limitation the rights to use, copy, modify, merge, publish, |
* distribute, sub license, and/or sell copies of the Software, and to |
* permit persons to whom the Software is furnished to do so, subject to |
* the following conditions: |
* |
* The above copyright notice and this permission notice (including the |
* next paragraph) shall be included in all copies or substantial portions |
* of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
* |
**************************************************************************/ |
|
#include "util/u_debug.h" |
#include "pipe/p_shader_tokens.h" |
#include "tgsi_parse.h" |
#include "util/u_memory.h" |
|
unsigned |
tgsi_parse_init( |
struct tgsi_parse_context *ctx, |
const struct tgsi_token *tokens ) |
{ |
ctx->FullHeader.Header = *(struct tgsi_header *) &tokens[0]; |
if( ctx->FullHeader.Header.HeaderSize >= 2 ) { |
ctx->FullHeader.Processor = *(struct tgsi_processor *) &tokens[1]; |
} |
else { |
return TGSI_PARSE_ERROR; |
} |
|
ctx->Tokens = tokens; |
ctx->Position = ctx->FullHeader.Header.HeaderSize; |
|
return TGSI_PARSE_OK; |
} |
|
void |
tgsi_parse_free( |
struct tgsi_parse_context *ctx ) |
{ |
} |
|
boolean |
tgsi_parse_end_of_tokens( |
struct tgsi_parse_context *ctx ) |
{ |
return ctx->Position >= |
ctx->FullHeader.Header.HeaderSize + ctx->FullHeader.Header.BodySize; |
} |
|
|
/** |
* This function is used to avoid and work-around type punning/aliasing |
* warnings. The warnings seem harmless on x86 but on PPC they cause |
* real failures. |
*/ |
static INLINE void |
copy_token(void *dst, const void *src) |
{ |
memcpy(dst, src, 4); |
} |
|
|
/** |
* Get next 4-byte token, return it at address specified by 'token' |
*/ |
static void |
next_token( |
struct tgsi_parse_context *ctx, |
void *token ) |
{ |
assert( !tgsi_parse_end_of_tokens( ctx ) ); |
copy_token(token, &ctx->Tokens[ctx->Position]); |
ctx->Position++; |
} |
|
|
void |
tgsi_parse_token( |
struct tgsi_parse_context *ctx ) |
{ |
struct tgsi_token token; |
unsigned i; |
|
next_token( ctx, &token ); |
|
switch( token.Type ) { |
case TGSI_TOKEN_TYPE_DECLARATION: |
{ |
struct tgsi_full_declaration *decl = &ctx->FullToken.FullDeclaration; |
|
memset(decl, 0, sizeof *decl); |
copy_token(&decl->Declaration, &token); |
|
next_token( ctx, &decl->Range ); |
|
if (decl->Declaration.Dimension) { |
next_token(ctx, &decl->Dim); |
} |
|
if( decl->Declaration.Interpolate ) { |
next_token( ctx, &decl->Interp ); |
} |
|
if( decl->Declaration.Semantic ) { |
next_token( ctx, &decl->Semantic ); |
} |
|
if (decl->Declaration.File == TGSI_FILE_RESOURCE) { |
next_token(ctx, &decl->Resource); |
} |
|
if (decl->Declaration.File == TGSI_FILE_SAMPLER_VIEW) { |
next_token(ctx, &decl->SamplerView); |
} |
|
if( decl->Declaration.Array ) { |
next_token(ctx, &decl->Array); |
} |
|
break; |
} |
|
case TGSI_TOKEN_TYPE_IMMEDIATE: |
{ |
struct tgsi_full_immediate *imm = &ctx->FullToken.FullImmediate; |
uint imm_count; |
|
memset(imm, 0, sizeof *imm); |
copy_token(&imm->Immediate, &token); |
|
imm_count = imm->Immediate.NrTokens - 1; |
|
switch (imm->Immediate.DataType) { |
case TGSI_IMM_FLOAT32: |
for (i = 0; i < imm_count; i++) { |
next_token(ctx, &imm->u[i].Float); |
} |
break; |
|
case TGSI_IMM_UINT32: |
for (i = 0; i < imm_count; i++) { |
next_token(ctx, &imm->u[i].Uint); |
} |
break; |
|
case TGSI_IMM_INT32: |
for (i = 0; i < imm_count; i++) { |
next_token(ctx, &imm->u[i].Int); |
} |
break; |
|
default: |
assert( 0 ); |
} |
|
break; |
} |
|
case TGSI_TOKEN_TYPE_INSTRUCTION: |
{ |
struct tgsi_full_instruction *inst = &ctx->FullToken.FullInstruction; |
|
memset(inst, 0, sizeof *inst); |
copy_token(&inst->Instruction, &token); |
|
if (inst->Instruction.Predicate) { |
next_token(ctx, &inst->Predicate); |
} |
|
if (inst->Instruction.Label) { |
next_token( ctx, &inst->Label); |
} |
|
if (inst->Instruction.Texture) { |
next_token( ctx, &inst->Texture); |
for( i = 0; i < inst->Texture.NumOffsets; i++ ) { |
next_token( ctx, &inst->TexOffsets[i] ); |
} |
} |
|
assert( inst->Instruction.NumDstRegs <= TGSI_FULL_MAX_DST_REGISTERS ); |
|
for( i = 0; i < inst->Instruction.NumDstRegs; i++ ) { |
|
next_token( ctx, &inst->Dst[i].Register ); |
|
if( inst->Dst[i].Register.Indirect ) |
next_token( ctx, &inst->Dst[i].Indirect ); |
|
if( inst->Dst[i].Register.Dimension ) { |
next_token( ctx, &inst->Dst[i].Dimension ); |
|
/* |
* No support for multi-dimensional addressing. |
*/ |
assert( !inst->Dst[i].Dimension.Dimension ); |
|
if( inst->Dst[i].Dimension.Indirect ) |
next_token( ctx, &inst->Dst[i].DimIndirect ); |
} |
} |
|
assert( inst->Instruction.NumSrcRegs <= TGSI_FULL_MAX_SRC_REGISTERS ); |
|
for( i = 0; i < inst->Instruction.NumSrcRegs; i++ ) { |
|
next_token( ctx, &inst->Src[i].Register ); |
|
if( inst->Src[i].Register.Indirect ) |
next_token( ctx, &inst->Src[i].Indirect ); |
|
if( inst->Src[i].Register.Dimension ) { |
next_token( ctx, &inst->Src[i].Dimension ); |
|
/* |
* No support for multi-dimensional addressing. |
*/ |
assert( !inst->Src[i].Dimension.Dimension ); |
|
if( inst->Src[i].Dimension.Indirect ) |
next_token( ctx, &inst->Src[i].DimIndirect ); |
} |
} |
|
break; |
} |
|
case TGSI_TOKEN_TYPE_PROPERTY: |
{ |
struct tgsi_full_property *prop = &ctx->FullToken.FullProperty; |
uint prop_count; |
|
memset(prop, 0, sizeof *prop); |
copy_token(&prop->Property, &token); |
|
prop_count = prop->Property.NrTokens - 1; |
for (i = 0; i < prop_count; i++) { |
next_token(ctx, &prop->u[i]); |
} |
|
break; |
} |
|
default: |
assert( 0 ); |
} |
} |
|
|
|
|
/** |
* Make a new copy of a token array. |
*/ |
struct tgsi_token * |
tgsi_dup_tokens(const struct tgsi_token *tokens) |
{ |
unsigned n = tgsi_num_tokens(tokens); |
unsigned bytes = n * sizeof(struct tgsi_token); |
struct tgsi_token *new_tokens = (struct tgsi_token *) MALLOC(bytes); |
if (new_tokens) |
memcpy(new_tokens, tokens, bytes); |
return new_tokens; |
} |
|
|
/** |
* Allocate memory for num_tokens tokens. |
*/ |
struct tgsi_token * |
tgsi_alloc_tokens(unsigned num_tokens) |
{ |
unsigned bytes = num_tokens * sizeof(struct tgsi_token); |
return (struct tgsi_token *) MALLOC(bytes); |
} |
|
|
void |
tgsi_dump_tokens(const struct tgsi_token *tokens) |
{ |
const unsigned *dwords = (const unsigned *)tokens; |
int nr = tgsi_num_tokens(tokens); |
int i; |
|
assert(sizeof(*tokens) == sizeof(unsigned)); |
|
debug_printf("const unsigned tokens[%d] = {\n", nr); |
for (i = 0; i < nr; i++) |
debug_printf("0x%08x,\n", dwords[i]); |
debug_printf("};\n"); |
} |