| /************************************************************************** |
| * |
| * 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_IMMEDIATE_ARRAY) { |
| unsigned i, j; |
| decl->ImmediateData.u = (union tgsi_immediate_data*) |
| &ctx->Tokens[ctx->Position]; |
| for (i = 0; i <= decl->Range.Last; ++i) { |
| for (j = 0; j < 4; ++j) { |
| ctx->Position++; |
| } |
| } |
| } |
| |
| 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); |
| } |
| |
| 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 ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->Dst[i].Indirect.Dimension ); |
| assert( !inst->Dst[i].Indirect.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 ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->Dst[i].Indirect.Indirect ); |
| assert( !inst->Dst[i].Indirect.Dimension ); |
| } |
| } |
| } |
| |
| 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 ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->Src[i].Indirect.Indirect ); |
| assert( !inst->Src[i].Indirect.Dimension ); |
| } |
| |
| 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 ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->Src[i].Indirect.Indirect ); |
| assert( !inst->Src[i].Indirect.Dimension ); |
| } |
| } |
| } |
| |
| 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"); |
| } |