2012-03-02 08:08:25 -05:00
|
|
|
/*******************************************************************************
|
|
|
|
|
|
2013-01-25 18:15:15 -05:00
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
2013-07-10 09:26:01 -04:00
|
|
|
This file is part of Sortix.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
2013-07-10 09:26:01 -04:00
|
|
|
Sortix is free software: you can redistribute it and/or modify it under the
|
|
|
|
|
terms of the GNU General Public License as published by the Free Software
|
|
|
|
|
Foundation, either version 3 of the License, or (at your option) any later
|
|
|
|
|
version.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
2013-07-10 09:26:01 -04:00
|
|
|
Sortix is distributed in the hope that 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.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
2013-07-10 09:26:01 -04:00
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
|
|
|
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
2013-12-28 15:00:15 -05:00
|
|
|
x64/calltrace.S
|
2013-07-10 09:26:01 -04:00
|
|
|
Attempts to unwind the stack and prints the code locations where functions
|
|
|
|
|
were called. This greatly aids debugging.
|
2012-03-02 08:08:25 -05:00
|
|
|
|
|
|
|
|
*******************************************************************************/
|
|
|
|
|
|
|
|
|
|
.section .text
|
|
|
|
|
|
|
|
|
|
.global calltrace
|
|
|
|
|
.type calltrace, @function
|
|
|
|
|
calltrace:
|
|
|
|
|
push %rbp
|
2013-07-08 11:33:19 -04:00
|
|
|
push %rbx
|
2012-03-02 08:08:25 -05:00
|
|
|
movq %rsp, %rbp
|
2013-01-25 18:15:15 -05:00
|
|
|
push %rbx
|
|
|
|
|
movq %rdi, %rbx
|
|
|
|
|
testq %rbx, %rbx
|
|
|
|
|
jnz 1f
|
2012-03-02 08:08:25 -05:00
|
|
|
movq %rbp, %rbx
|
2013-01-25 18:15:15 -05:00
|
|
|
1:
|
|
|
|
|
xorl %edi, %edi
|
2012-03-02 08:08:25 -05:00
|
|
|
|
|
|
|
|
calltrace_unwind:
|
|
|
|
|
testq %rbx, %rbx
|
|
|
|
|
jz calltrace_done
|
|
|
|
|
movq 8(%rbx), %rsi # Previous RIP
|
|
|
|
|
movq 0(%rbx), %rbx # Previous RBP
|
|
|
|
|
pushq %rdi
|
|
|
|
|
call calltrace_print_function
|
|
|
|
|
popq %rdi
|
|
|
|
|
incq %rdi
|
|
|
|
|
jmp calltrace_unwind
|
|
|
|
|
|
|
|
|
|
calltrace_done:
|
2013-07-08 11:33:19 -04:00
|
|
|
popq %rbx
|
2012-03-02 08:08:25 -05:00
|
|
|
popq %rbp
|
|
|
|
|
retq
|
2013-05-22 16:06:18 -04:00
|
|
|
.size calltrace, . - calltrace
|
