From 2727702b1731a478de8806481416080d02af5862 Mon Sep 17 00:00:00 2001 From: Michal Krol Date: Thu, 17 Jul 2008 20:19:40 +0200 Subject: tgsi: New file. --- src/gallium/auxiliary/tgsi/util/tgsi_sanity.c | 258 ++++++++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 src/gallium/auxiliary/tgsi/util/tgsi_sanity.c (limited to 'src/gallium/auxiliary/tgsi/util/tgsi_sanity.c') diff --git a/src/gallium/auxiliary/tgsi/util/tgsi_sanity.c b/src/gallium/auxiliary/tgsi/util/tgsi_sanity.c new file mode 100644 index 0000000000..377309c3fd --- /dev/null +++ b/src/gallium/auxiliary/tgsi/util/tgsi_sanity.c @@ -0,0 +1,258 @@ +/************************************************************************** + * + * Copyright 2008 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 "tgsi_sanity.h" +#include "tgsi_transform.h" + +#define MAX_REGISTERS 256 + +typedef uint reg_flag; + +#define BITS_IN_REG_FLAG (sizeof( reg_flag ) * 8) + +struct sanity_check_ctx +{ + struct tgsi_transform_context xform; + + reg_flag regs_decl[TGSI_FILE_COUNT][MAX_REGISTERS / sizeof( uint ) / 8]; + reg_flag regs_used[TGSI_FILE_COUNT][MAX_REGISTERS / sizeof( uint ) / 8]; + uint num_imms; + uint num_instructions; + uint index_of_END; + + uint errors; + uint warnings; +}; + +static void +report_error( + struct sanity_check_ctx *ctx, + const char *msg ) +{ + debug_printf( "\nError: %s", msg ); + ctx->errors++; +} + +static void +report_warning( + struct sanity_check_ctx *ctx, + const char *msg ) +{ + debug_printf( "\nWarning: %s", msg ); + ctx->warnings++; +} + +static boolean +check_file_name( + struct sanity_check_ctx *ctx, + uint file ) +{ + if (file <= TGSI_FILE_NULL || file >= TGSI_FILE_COUNT) { + report_error( ctx, "Invalid file name" ); + return FALSE; + } + return TRUE; +} + +static boolean +is_register_declared( + struct sanity_check_ctx *ctx, + uint file, + uint index ) +{ + assert( index < MAX_REGISTERS ); + + return (ctx->regs_decl[file][index / BITS_IN_REG_FLAG] & (1 << (index % BITS_IN_REG_FLAG))) ? TRUE : FALSE; +} + +static boolean +is_register_used( + struct sanity_check_ctx *ctx, + uint file, + uint index ) +{ + assert( index < MAX_REGISTERS ); + + return (ctx->regs_used[file][index / BITS_IN_REG_FLAG] & (1 << (index % BITS_IN_REG_FLAG))) ? TRUE : FALSE; +} + +static void xform_instruction( + struct tgsi_transform_context *xform, + struct tgsi_full_instruction *inst ) +{ + struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) xform; + uint i; + + /* There must be no other instructions after END. + */ + if (ctx->index_of_END != ~0) { + report_error( ctx, "Unexpected instruction after END" ); + } + else if (inst->Instruction.Opcode == TGSI_OPCODE_END) { + ctx->index_of_END = ctx->num_instructions; + } + + /* Check destination and source registers' validity. + * Mark the registers as used. + */ + for (i = 0; i < inst->Instruction.NumDstRegs; i++) { + uint file; + uint index; + + file = inst->FullDstRegisters[i].DstRegister.File; + if (!check_file_name( ctx, file )) + return; + index = inst->FullDstRegisters[i].DstRegister.Index; + if (!is_register_declared( ctx, file, index )) + report_error( ctx, "Undeclared destination register" ); + ctx->regs_used[file][index / BITS_IN_REG_FLAG] |= (1 << (index % BITS_IN_REG_FLAG)); + } + for (i = 0; i < inst->Instruction.NumSrcRegs; i++) { + uint file; + uint index; + + file = inst->FullSrcRegisters[i].SrcRegister.File; + if (!check_file_name( ctx, file )) + return; + index = inst->FullSrcRegisters[i].SrcRegister.Index; + if (!is_register_declared( ctx, file, index )) + report_error( ctx, "Undeclared source register" ); + ctx->regs_used[file][index / BITS_IN_REG_FLAG] |= (1 << (index % BITS_IN_REG_FLAG)); + } + + ctx->num_instructions++; +} + +static void xform_declaration( + struct tgsi_transform_context *xform, + struct tgsi_full_declaration *decl ) +{ + struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) xform; + uint file; + uint i; + + /* No declarations allowed after the first instruction. + */ + if (ctx->num_instructions > 0) + report_error( ctx, "Instruction expected but declaration found" ); + + /* Check registers' validity. + * Mark the registers as declared. + */ + file = decl->Declaration.File; + if (!check_file_name( ctx, file )) + return; + for (i = decl->DeclarationRange.First; i <= decl->DeclarationRange.Last; i++) { + if (is_register_declared( ctx, file, i )) + report_error( ctx, "The same register declared twice" ); + ctx->regs_decl[file][i / BITS_IN_REG_FLAG] |= (1 << (i % BITS_IN_REG_FLAG)); + } +} + +static void xform_immediate( + struct tgsi_transform_context *xform, + struct tgsi_full_immediate *imm ) +{ + struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) xform; + + assert( ctx->num_imms < MAX_REGISTERS ); + + /* No immediates allowed after the first instruction. + */ + if (ctx->num_instructions > 0) + report_error( ctx, "Instruction expected but immediate found" ); + + /* Mark the register as declared. + */ + ctx->num_imms++; + ctx->regs_decl[TGSI_FILE_IMMEDIATE][ctx->num_imms / BITS_IN_REG_FLAG] |= (1 << (ctx->num_imms % BITS_IN_REG_FLAG)); + + /* Check data type validity. + */ + if (imm->Immediate.DataType != TGSI_IMM_FLOAT32) { + report_error( ctx, "Invalid immediate data type" ); + return; + } +} + +static void epilog( + struct tgsi_transform_context *xform ) +{ + struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) xform; + uint file; + + /* There must be an END instruction at the end. + */ + if (ctx->index_of_END == ~0 || ctx->index_of_END != ctx->num_instructions - 1) { + report_error( ctx, "Expected END at end of instruction sequence" ); + } + + /* Check if all declared registers were used. + */ + for (file = TGSI_FILE_NULL; file < TGSI_FILE_COUNT; file++) { + uint i; + + for (i = 0; i < MAX_REGISTERS; i++) { + if (is_register_declared( ctx, file, i ) && !is_register_used( ctx, file, i )) { + report_warning( ctx, "Register never used" ); + } + } + } + + /* Print totals, if any. + */ + if (ctx->errors || ctx->warnings) + debug_printf( "\n%u errors, %u warnings", ctx->errors, ctx->warnings ); +} + +boolean +tgsi_sanity_check( + struct tgsi_token *tokens ) +{ + struct sanity_check_ctx ctx; + struct tgsi_token dummy_tokens[16]; + + ctx.xform.transform_instruction = xform_instruction; + ctx.xform.transform_declaration = xform_declaration; + ctx.xform.transform_immediate = xform_immediate; + ctx.xform.epilog = epilog; + + memset( ctx.regs_decl, 0, sizeof( ctx.regs_decl ) ); + memset( ctx.regs_used, 0, sizeof( ctx.regs_used ) ); + ctx.num_imms = 0; + ctx.num_instructions = 0; + ctx.index_of_END = ~0; + + ctx.errors = 0; + ctx.warnings = 0; + + if (tgsi_transform_shader( tokens, dummy_tokens, 16, &ctx.xform ) == -1) + return FALSE; + + return ctx.errors > 0; +} -- cgit v1.2.3