int
machine_trace_thread64(thread_t thread, char *tracepos, char *tracebound, int nframes, boolean_t user_p)
{
uint64_t *tracebuf = (uint64_t *)tracepos;
uint32_t fence = 0;
addr64_t stackptr = 0;
uint64_t stacklimit = 0xb0000000;
int framecount = 0;
addr64_t init_srr0 = 0;
addr64_t prevsp = 0;
unsigned framesize = 2 * sizeof(addr64_t);
if (user_p) {
init_srr0 = thread->machine.upcb->save_srr0;
stackptr = thread->machine.upcb->save_r1;
stacklimit = 0xffffffffffffffffULL;
kdp_pmap = thread->task->map->pmap;
}
else {
stackptr = thread->machine.pcb->save_r1;
init_srr0 = thread->machine.pcb->save_srr0;
}
*tracebuf++ = init_srr0;
for (framecount = 0; framecount < nframes; framecount++) {
if ((uint32_t)(tracebound - ((char *)tracebuf)) < (4 * framesize)) {
tracebuf--;
break;
}
*tracebuf++ = stackptr;
if (!stackptr || (stackptr == fence)){
break;
}
if (stackptr < prevsp) {
break;
}
if (stackptr & 0x000000F) {
break;
}
if (stackptr > stacklimit) {
break;
}
if (machine_read64(stackptr+LR_OFFSET64, (caddr_t) tracebuf, sizeof(addr64_t)) != sizeof(addr64_t)) {
break;
}
tracebuf++;
prevsp = stackptr;
if (machine_read64(stackptr, (caddr_t) &stackptr, sizeof(addr64_t)) != sizeof(addr64_t)) {
*tracebuf++ = 0;
break;
}
}
kdp_pmap = NULL;
return (uint32_t) (((char *) tracebuf) - tracepos);
}
int
machine_trace_thread64(thread_t thread, char *tracepos, char *tracebound, int nframes, boolean_t user_p)
{
uint64_t *tracebuf = (uint64_t *)tracepos;
uint32_t fence = 0;
addr64_t stackptr = 0;
int framecount = 0;
addr64_t init_rip = 0;
addr64_t prevsp = 0;
unsigned framesize = 2 * sizeof(addr64_t);
if (user_p) {
x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
init_rip = iss64->isf.rip;
stackptr = iss64->rbp;
kdp_pmap = thread->task->map->pmap;
}
else {
stackptr = STACK_IKS(thread->kernel_stack)->k_rbp;
init_rip = STACK_IKS(thread->kernel_stack)->k_rip;
kdp_pmap = 0;
}
*tracebuf++ = init_rip;
for (framecount = 0; framecount < nframes; framecount++) {
if ((uint32_t)(tracebound - ((char *)tracebuf)) < (4 * framesize)) {
tracebuf--;
break;
}
*tracebuf++ = stackptr;
if (!stackptr || (stackptr == fence)){
break;
}
if (stackptr & 0x0000003) {
break;
}
if (stackptr <= prevsp) {
break;
}
if (machine_read64(stackptr + RETURN_OFFSET64, (caddr_t) tracebuf, sizeof(addr64_t)) != sizeof(addr64_t)) {
break;
}
tracebuf++;
prevsp = stackptr;
if (machine_read64(stackptr, (caddr_t) &stackptr, sizeof(addr64_t)) != sizeof(addr64_t)) {
*tracebuf++ = 0;
break;
}
}
kdp_pmap = NULL;
return (uint32_t) (((char *) tracebuf) - tracepos);
}
