R_API int r_anal_cond_eval(RAnal *anal, RAnalCond *cond) {
// XXX: sign issue here?
st64 arg0 = (st64) r_anal_value_to_ut64 (anal, cond->arg[0]);
if (cond->arg[1]) {
st64 arg1 = (st64) r_anal_value_to_ut64 (anal, cond->arg[1]);
switch (cond->type) {
case R_ANAL_COND_EQ: return arg0 == arg1;
case R_ANAL_COND_NE: return arg0 != arg1;
case R_ANAL_COND_GE: return arg0 >= arg1;
case R_ANAL_COND_GT: return arg0 > arg1;
case R_ANAL_COND_LE: return arg0 <= arg1;
case R_ANAL_COND_LT: return arg0 < arg1;
}
} else {
switch (cond->type) {
case R_ANAL_COND_EQ: return !arg0;
case R_ANAL_COND_NE: return arg0;
case R_ANAL_COND_GT: return arg0>0;
case R_ANAL_COND_GE: return arg0>=0;
case R_ANAL_COND_LT: return arg0<0;
case R_ANAL_COND_LE: return arg0<=0;
}
}
return R_FALSE;
}
R_API int r_anal_value_set_ut64(RAnal *anal, RAnalValue *val, ut64 num) {
if (val->memref) {
if (anal->iob.io) {
ut8 data[8];
ut64 addr = r_anal_value_to_ut64 (anal, val);
r_mem_set_num (data, val->memref, num, anal->big_endian);
anal->iob.write_at (anal->iob.io, addr, data, val->memref);
} else eprintf ("No IO binded to r_anal\n");
} else {
if (val->reg)
r_reg_set_value (anal->reg, val->reg, num);
}
return R_FALSE; //is this necessary
}
// TODO: return RAnalException *
R_API int r_anal_op_execute (RAnal *anal, RAnalOp *op) {
while (op) {
if (op->delay>0) {
anal->queued = r_anal_op_copy (op);
return R_FALSE;
}
switch (op->type) {
case R_ANAL_OP_TYPE_JMP:
case R_ANAL_OP_TYPE_UJMP:
case R_ANAL_OP_TYPE_CALL:
break;
case R_ANAL_OP_TYPE_ADD:
// dst = src[0] + src[1] + src[2]
r_anal_value_set_ut64 (anal, op->dst,
r_anal_value_to_ut64 (anal, op->src[0])+
r_anal_value_to_ut64 (anal, op->src[1])+
r_anal_value_to_ut64 (anal, op->src[2]));
break;
case R_ANAL_OP_TYPE_SUB:
// dst = src[0] + src[1] + src[2]
r_anal_value_set_ut64 (anal, op->dst,
r_anal_value_to_ut64 (anal, op->src[0])-
r_anal_value_to_ut64 (anal, op->src[1])-
r_anal_value_to_ut64 (anal, op->src[2]));
break;
case R_ANAL_OP_TYPE_DIV:
{
ut64 div = r_anal_value_to_ut64 (anal, op->src[1]);
if (div == 0) {
eprintf ("r_anal_op_execute: division by zero\n");
eprintf ("TODO: throw RAnalException\n");
} else r_anal_value_set_ut64 (anal, op->dst,
r_anal_value_to_ut64 (anal, op->src[0])/div);
}
break;
case R_ANAL_OP_TYPE_MUL:
r_anal_value_set_ut64 (anal, op->dst,
r_anal_value_to_ut64 (anal, op->src[0])*
r_anal_value_to_ut64 (anal, op->src[1]));
break;
case R_ANAL_OP_TYPE_MOV:
// dst = src[0]
r_anal_value_set_ut64 (anal, op->dst,
r_anal_value_to_ut64 (anal, op->src[0]));
break;
case R_ANAL_OP_TYPE_NOP:
// do nothing
break;
}
op = op->next;
}
if (anal->queued) {
if (op && op->delay>0) {
eprintf ("Exception! two consecutive delayed instructions\n");
return R_FALSE;
}
anal->queued->delay--;
if (anal->queued->delay == 0) {
r_anal_op_execute (anal, anal->queued);
r_anal_op_free (anal->queued);
anal->queued = NULL;
}
}
return R_TRUE;
}
