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tgsi: Validate instruction opcode and operand counts.

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This commit is contained in:
Michal Krol
2008-08-13 17:31:26 +02:00
parent 2caaba8195
commit 4b929b32d0
1 changed files with 15 additions and 0 deletions
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15
src/gallium/auxiliary/tgsi/tgsi_sanity.c
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@@ -27,6 +27,7 @@
#include "pipe/p_debug.h" #include "pipe/p_debug.h"
#include "tgsi_sanity.h" #include "tgsi_sanity.h"
#include "tgsi_info.h"
#include "tgsi_iterate.h" #include "tgsi_iterate.h"
#define MAX_REGISTERS 256 #define MAX_REGISTERS 256
@@ -170,6 +171,7 @@ iter_instruction(
struct tgsi_full_instruction *inst ) struct tgsi_full_instruction *inst )
{ {
struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) iter; struct sanity_check_ctx *ctx = (struct sanity_check_ctx *) iter;
const struct tgsi_opcode_info *info;
uint i; uint i;
/* There must be no other instructions after END. /* There must be no other instructions after END.
@@ -181,6 +183,19 @@ iter_instruction(
ctx->index_of_END = ctx->num_instructions; ctx->index_of_END = ctx->num_instructions;
} }
info = tgsi_get_opcode_info( inst->Instruction.Opcode );
if (info == NULL) {
report_error( ctx, "Invalid instruction opcode" );
return TRUE;
}
if (info->num_dst != inst->Instruction.NumDstRegs) {
report_error( ctx, "Invalid number of destination operands" );
}
if (info->num_src != inst->Instruction.NumSrcRegs) {
report_error( ctx, "Invalid number of source operands" );
}
/* Check destination and source registers' validity. /* Check destination and source registers' validity.
* Mark the registers as used. * Mark the registers as used.
*/ */