| /************************************************************************** |
| * |
| * 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 "tgsi_build.h" |
| #include "util/u_memory.h" |
| |
| void |
| tgsi_full_token_init( |
| union tgsi_full_token *full_token ) |
| { |
| full_token->Token.Type = TGSI_TOKEN_TYPE_DECLARATION; |
| } |
| |
| void |
| tgsi_full_token_free( |
| union tgsi_full_token *full_token ) |
| { |
| if( full_token->Token.Type == TGSI_TOKEN_TYPE_IMMEDIATE ) { |
| FREE( (void *) full_token->FullImmediate.u.Pointer ); |
| } |
| } |
| |
| unsigned |
| tgsi_parse_init( |
| struct tgsi_parse_context *ctx, |
| const struct tgsi_token *tokens ) |
| { |
| ctx->FullVersion.Version = *(struct tgsi_version *) &tokens[0]; |
| if( ctx->FullVersion.Version.MajorVersion > 1 ) { |
| return TGSI_PARSE_ERROR; |
| } |
| |
| ctx->FullHeader.Header = *(struct tgsi_header *) &tokens[1]; |
| if( ctx->FullHeader.Header.HeaderSize >= 2 ) { |
| ctx->FullHeader.Processor = *(struct tgsi_processor *) &tokens[2]; |
| } |
| else { |
| ctx->FullHeader.Processor = tgsi_default_processor(); |
| } |
| |
| ctx->Tokens = tokens; |
| ctx->Position = 1 + ctx->FullHeader.Header.HeaderSize; |
| |
| tgsi_full_token_init( &ctx->FullToken ); |
| |
| return TGSI_PARSE_OK; |
| } |
| |
| void |
| tgsi_parse_free( |
| struct tgsi_parse_context *ctx ) |
| { |
| tgsi_full_token_free( &ctx->FullToken ); |
| } |
| |
| boolean |
| tgsi_parse_end_of_tokens( |
| struct tgsi_parse_context *ctx ) |
| { |
| return ctx->Position >= |
| 1 + 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; |
| |
| tgsi_full_token_free( &ctx->FullToken ); |
| tgsi_full_token_init( &ctx->FullToken ); |
| |
| next_token( ctx, &token ); |
| |
| switch( token.Type ) { |
| case TGSI_TOKEN_TYPE_DECLARATION: |
| { |
| struct tgsi_full_declaration *decl = &ctx->FullToken.FullDeclaration; |
| |
| *decl = tgsi_default_full_declaration(); |
| copy_token(&decl->Declaration, &token); |
| |
| next_token( ctx, &decl->DeclarationRange ); |
| |
| if( decl->Declaration.Semantic ) { |
| next_token( ctx, &decl->Semantic ); |
| } |
| |
| break; |
| } |
| |
| case TGSI_TOKEN_TYPE_IMMEDIATE: |
| { |
| struct tgsi_full_immediate *imm = &ctx->FullToken.FullImmediate; |
| |
| *imm = tgsi_default_full_immediate(); |
| copy_token(&imm->Immediate, &token); |
| assert( !imm->Immediate.Extended ); |
| |
| switch (imm->Immediate.DataType) { |
| case TGSI_IMM_FLOAT32: |
| { |
| uint imm_count = imm->Immediate.NrTokens - 1; |
| struct tgsi_immediate_float32 *data; |
| |
| data = (struct tgsi_immediate_float32 *) MALLOC(sizeof(struct tgsi_immediate_float32) * imm_count); |
| if (data) { |
| for (i = 0; i < imm_count; i++) { |
| next_token(ctx, &data[i]); |
| } |
| imm->u.ImmediateFloat32 = data; |
| } |
| } |
| break; |
| |
| default: |
| assert( 0 ); |
| } |
| |
| break; |
| } |
| |
| case TGSI_TOKEN_TYPE_INSTRUCTION: |
| { |
| struct tgsi_full_instruction *inst = &ctx->FullToken.FullInstruction; |
| unsigned extended; |
| |
| *inst = tgsi_default_full_instruction(); |
| copy_token(&inst->Instruction, &token); |
| extended = inst->Instruction.Extended; |
| |
| while( extended ) { |
| struct tgsi_src_register_ext token; |
| |
| next_token( ctx, &token ); |
| |
| switch( token.Type ) { |
| case TGSI_INSTRUCTION_EXT_TYPE_NV: |
| copy_token(&inst->InstructionExtNv, &token); |
| break; |
| |
| case TGSI_INSTRUCTION_EXT_TYPE_LABEL: |
| copy_token(&inst->InstructionExtLabel, &token); |
| break; |
| |
| case TGSI_INSTRUCTION_EXT_TYPE_TEXTURE: |
| copy_token(&inst->InstructionExtTexture, &token); |
| break; |
| |
| default: |
| assert( 0 ); |
| } |
| |
| extended = token.Extended; |
| } |
| |
| assert( inst->Instruction.NumDstRegs <= TGSI_FULL_MAX_DST_REGISTERS ); |
| |
| for( i = 0; i < inst->Instruction.NumDstRegs; i++ ) { |
| unsigned extended; |
| |
| next_token( ctx, &inst->FullDstRegisters[i].DstRegister ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->FullDstRegisters[i].DstRegister.Dimension ); |
| |
| extended = inst->FullDstRegisters[i].DstRegister.Extended; |
| |
| while( extended ) { |
| struct tgsi_src_register_ext token; |
| |
| next_token( ctx, &token ); |
| |
| switch( token.Type ) { |
| case TGSI_DST_REGISTER_EXT_TYPE_CONDCODE: |
| copy_token(&inst->FullDstRegisters[i].DstRegisterExtConcode, |
| &token); |
| break; |
| |
| case TGSI_DST_REGISTER_EXT_TYPE_MODULATE: |
| copy_token(&inst->FullDstRegisters[i].DstRegisterExtModulate, |
| &token); |
| break; |
| |
| default: |
| assert( 0 ); |
| } |
| |
| extended = token.Extended; |
| } |
| |
| if( inst->FullDstRegisters[i].DstRegister.Indirect ) { |
| next_token( ctx, &inst->FullDstRegisters[i].DstRegisterInd ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->FullDstRegisters[i].DstRegisterInd.Indirect ); |
| assert( !inst->FullDstRegisters[i].DstRegisterInd.Dimension ); |
| assert( !inst->FullDstRegisters[i].DstRegisterInd.Extended ); |
| } |
| } |
| |
| assert( inst->Instruction.NumSrcRegs <= TGSI_FULL_MAX_SRC_REGISTERS ); |
| |
| for( i = 0; i < inst->Instruction.NumSrcRegs; i++ ) { |
| unsigned extended; |
| |
| next_token( ctx, &inst->FullSrcRegisters[i].SrcRegister ); |
| |
| extended = inst->FullSrcRegisters[i].SrcRegister.Extended; |
| |
| while( extended ) { |
| struct tgsi_src_register_ext token; |
| |
| next_token( ctx, &token ); |
| |
| switch( token.Type ) { |
| case TGSI_SRC_REGISTER_EXT_TYPE_SWZ: |
| copy_token(&inst->FullSrcRegisters[i].SrcRegisterExtSwz, |
| &token); |
| break; |
| |
| case TGSI_SRC_REGISTER_EXT_TYPE_MOD: |
| copy_token(&inst->FullSrcRegisters[i].SrcRegisterExtMod, |
| &token); |
| break; |
| |
| default: |
| assert( 0 ); |
| } |
| |
| extended = token.Extended; |
| } |
| |
| if( inst->FullSrcRegisters[i].SrcRegister.Indirect ) { |
| next_token( ctx, &inst->FullSrcRegisters[i].SrcRegisterInd ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Indirect ); |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Dimension ); |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Extended ); |
| } |
| |
| if( inst->FullSrcRegisters[i].SrcRegister.Dimension ) { |
| next_token( ctx, &inst->FullSrcRegisters[i].SrcRegisterDim ); |
| |
| /* |
| * No support for multi-dimensional addressing. |
| */ |
| assert( !inst->FullSrcRegisters[i].SrcRegisterDim.Dimension ); |
| assert( !inst->FullSrcRegisters[i].SrcRegisterDim.Extended ); |
| |
| if( inst->FullSrcRegisters[i].SrcRegisterDim.Indirect ) { |
| next_token( ctx, &inst->FullSrcRegisters[i].SrcRegisterDimInd ); |
| |
| /* |
| * No support for indirect or multi-dimensional addressing. |
| */ |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Indirect ); |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Dimension ); |
| assert( !inst->FullSrcRegisters[i].SrcRegisterInd.Extended ); |
| } |
| } |
| } |
| |
| break; |
| } |
| |
| default: |
| assert( 0 ); |
| } |
| } |
| |
| |
| unsigned |
| tgsi_num_tokens(const struct tgsi_token *tokens) |
| { |
| struct tgsi_parse_context ctx; |
| if (tgsi_parse_init(&ctx, tokens) == TGSI_PARSE_OK) { |
| unsigned len = (ctx.FullHeader.Header.HeaderSize + |
| ctx.FullHeader.Header.BodySize + |
| 1); |
| return len; |
| } |
| return 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; |
| } |