mread_instr
if (mread_instr(regs->nip, &instr)) {
static int mread_instr(unsigned long, ppc_inst_t *);
if (!mread_instr(addr, &instr)) {
nr = mread_instr(adr, &inst);
if (!mread_instr(bp->address, &instr)) {
if (mread_instr(bp->address - 4, &instr2) == 8) {
if (mread_instr(bp->address, &instr)