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Fix #4726 - Make sure that the destination register is not reported as "read" in an ESIL eq operation

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Fabian Yamaguchi 2016-05-03 19:42:00 +02:00 committed by radare
parent bac256c65c
commit 122e1d55a8
1 changed files with 12 additions and 1 deletions
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13
libr/anal/esil.c
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@ -486,6 +486,17 @@ R_API int r_anal_esil_reg_write(RAnalEsil *esil, const char *dst, ut64 num) {
return ret;
}
R_API int r_anal_esil_reg_read_nocallback(RAnalEsil *esil, const char *regname, ut64 *num, int *size) {
int ret;
void *old_hook_reg_read = (void *) esil->cb.hook_reg_read;
esil->cb.hook_reg_read = NULL;
ret = r_anal_esil_reg_read (esil, regname, num, size);
esil->cb.hook_reg_read = old_hook_reg_read;
return ret;
}
R_API int r_anal_esil_reg_read(RAnalEsil *esil, const char *regname, ut64 *num, int *size) {
bool ret = false;
ut64 localnum; // XXX why is this necessary?
@ -514,7 +525,7 @@ static int esil_eq(RAnalEsil *esil) {
char *dst = r_anal_esil_pop (esil);
char *src = r_anal_esil_pop (esil);
if (src && dst && r_anal_esil_reg_read (esil, dst, &num, NULL)) {
if (src && dst && r_anal_esil_reg_read_nocallback (esil, dst, &num, NULL)) {
if (r_anal_esil_get_parm (esil, src, &num2)) {
ret = r_anal_esil_reg_write (esil, dst, num2);
if (ret && r_anal_esil_get_parm_type (esil, src) != R_ANAL_ESIL_PARM_INTERNAL) { //necessary for some flag-things