blob: d194f654e94d99866beda0532fd0d87427d6349a [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* s390x stack implementation
*
* Copyright (c) 2017 Red Hat Inc
* Copyright 2021 IBM Corp
*
* Authors:
* Thomas Huth <thuth@redhat.com>
* David Hildenbrand <david@redhat.com>
* Janosch Frank <frankja@linux.ibm.com>
*/
#include <libcflat.h>
#include <stack.h>
#include <asm/arch_def.h>
int arch_backtrace_frame(const void *frame, const void **return_addrs,
int max_depth, bool current_frame)
{
int depth = 0;
struct stack_frame *stack = (struct stack_frame *)frame;
if (current_frame)
stack = __builtin_frame_address(0);
for (depth = 0; stack && depth < max_depth; depth++) {
return_addrs[depth] = (void *)stack->grs[8];
stack = stack->back_chain;
if (!stack)
break;
}
return depth;
}