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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_parse.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_parse.c b/src/gallium/auxiliary/tgsi/tgsi_parse.c
new file mode 100644
index 00000000000..d16f0cdcad4
--- /dev/null
+++ b/src/gallium/auxiliary/tgsi/tgsi_parse.c
@@ -0,0 +1,332 @@
+/**************************************************************************
+ *
+ * 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 "pipe/p_debug.h"
+#include "pipe/p_util.h"
+#include "pipe/p_shader_tokens.h"
+#include "tgsi_parse.h"
+#include "tgsi_build.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;
+}
+
+static void
+next_token(
+ struct tgsi_parse_context *ctx,
+ void *token )
+{
+ assert( !tgsi_parse_end_of_tokens( ctx ) );
+
+ *(struct tgsi_token *) token = ctx->Tokens[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();
+ decl->Declaration = *(struct tgsi_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();
+ imm->Immediate = *(struct tgsi_immediate *) &token;
+
+ assert( !imm->Immediate.Extended );
+
+ switch (imm->Immediate.DataType) {
+ case TGSI_IMM_FLOAT32:
+ imm->u.Pointer = MALLOC(
+ sizeof( struct tgsi_immediate_float32 ) * (imm->Immediate.Size - 1) );
+ for( i = 0; i < imm->Immediate.Size - 1; i++ ) {
+ next_token( ctx, (struct tgsi_immediate_float32 *) &imm->u.ImmediateFloat32[i] );
+ }
+ 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();
+ inst->Instruction = *(struct tgsi_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:
+ inst->InstructionExtNv =
+ *(struct tgsi_instruction_ext_nv *) &token;
+ break;
+
+ case TGSI_INSTRUCTION_EXT_TYPE_LABEL:
+ inst->InstructionExtLabel =
+ *(struct tgsi_instruction_ext_label *) &token;
+ break;
+
+ case TGSI_INSTRUCTION_EXT_TYPE_TEXTURE:
+ inst->InstructionExtTexture =
+ *(struct tgsi_instruction_ext_texture *) &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.Indirect );
+ 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:
+ inst->FullDstRegisters[i].DstRegisterExtConcode =
+ *(struct tgsi_dst_register_ext_concode *) &token;
+ break;
+
+ case TGSI_DST_REGISTER_EXT_TYPE_MODULATE:
+ inst->FullDstRegisters[i].DstRegisterExtModulate =
+ *(struct tgsi_dst_register_ext_modulate *) &token;
+ break;
+
+ default:
+ assert( 0 );
+ }
+
+ extended = token.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:
+ inst->FullSrcRegisters[i].SrcRegisterExtSwz =
+ *(struct tgsi_src_register_ext_swz *) &token;
+ break;
+
+ case TGSI_SRC_REGISTER_EXT_TYPE_MOD:
+ inst->FullSrcRegisters[i].SrcRegisterExtMod =
+ *(struct tgsi_src_register_ext_mod *) &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;
+}
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