diff options
Diffstat (limited to 'kernel/arch/x86_64/asm/stack_trace.s')
| -rw-r--r-- | kernel/arch/x86_64/asm/stack_trace.s | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/x86_64/asm/stack_trace.s b/kernel/arch/x86_64/asm/stack_trace.s new file mode 100644 index 0000000..57d98b9 --- /dev/null +++ b/kernel/arch/x86_64/asm/stack_trace.s @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2025 Danny Holman <dholman@gymli.org> + * + * This file is part of BoxOS, a free and open-source Unix-like operating + * system. + * + * BoxOS is free software; you can redistribute it and/or modify under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY; + * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A + * PARTICULAR PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * BoxOS; if not, see <https://www.gnu.org/licenses/>. + */ + +.section .text + +.global walk_stack +walk_stack: + pushq %rbp + movq %rsp, %rbp + + xorq %rdx, %rdx +.next_frame: + cmpq %rsi, %rdx + jge .done + + movq 8(%rbp), %rax + movq %rax, (%rdi, %rdx, 8) + + incq %rdx + + movq (%rbp), %rbp + jmp .next_frame +.done: + ret |