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llvmpipe: Disassemble beyond referred code beyond the RET instruction.

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This commit is contained in:
José Fonseca 2009-08-21 13:42:19 +01:00
parent c5531f575b
commit 90b5df8d1b
1 changed files with 32 additions and 2 deletions
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34
src/gallium/drivers/llvmpipe/lp_bld_debug.c
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@ -39,11 +39,14 @@ lp_disassemble(const void* func)
{
#ifdef HAVE_UDIS86
ud_t ud_obj;
uint64_t max_jmp_pc;
ud_init(&ud_obj);
ud_set_input_buffer(&ud_obj, (void*)func, 0xffff);
ud_set_pc(&ud_obj, (uint64_t) (uintptr_t) func);
max_jmp_pc = (uint64_t) (uintptr_t) func;
ud_set_pc(&ud_obj, max_jmp_pc);
#ifdef PIPE_ARCH_X86
ud_set_mode(&ud_obj, 32);
@ -55,6 +58,7 @@ lp_disassemble(const void* func)
ud_set_syntax(&ud_obj, UD_SYN_ATT);
while (ud_disassemble(&ud_obj)) {
#ifdef PIPE_ARCH_X86
debug_printf("%08lx: ", (unsigned long)ud_insn_off(&ud_obj));
#endif
@ -68,7 +72,33 @@ lp_disassemble(const void* func)
debug_printf("%s\n", ud_insn_asm(&ud_obj));
if (ud_obj.mnemonic == UD_Iret)
if(ud_obj.mnemonic != UD_Icall) {
unsigned i;
for(i = 0; i < 3; ++i) {
const struct ud_operand *op = &ud_obj.operand[i];
if (op->type == UD_OP_JIMM){
uint64_t pc = ud_obj.pc;
switch (op->size) {
case 8:
pc += op->lval.sbyte;
break;
case 16:
pc += op->lval.sword;
break;
case 32:
pc += op->lval.sdword;
break;
default:
break;
}
if(pc > max_jmp_pc)
max_jmp_pc = pc;
}
}
}
if (ud_insn_off(&ud_obj) >= max_jmp_pc && ud_obj.mnemonic == UD_Iret)
break;
}
debug_printf("\n");