/************************************************************************** * * 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.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); } 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"); }