48 lines
1.5 KiB
ArmAsm
48 lines
1.5 KiB
ArmAsm
/* Copyright 2022 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program 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.
|
|
|
|
This program 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.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
.text
|
|
.globl main
|
|
.type main,#function
|
|
main:
|
|
.cfi_startproc
|
|
stp x29, x30, [sp, -16]!
|
|
.cfi_def_cfa sp, 16
|
|
.cfi_offset x29, 0
|
|
.cfi_offset x30, 8
|
|
bl test_func
|
|
ldp x29, x30, [sp], 16
|
|
.cfi_restore x29
|
|
.cfi_restore x30
|
|
.cfi_def_cfa sp, 0
|
|
mov x0, 0
|
|
ret
|
|
.cfi_endproc
|
|
|
|
.globl test_func
|
|
test_func:
|
|
.cfi_startproc
|
|
// Unwind x30 to a different value
|
|
// CFA_val_expression x30 const2u 0x1234
|
|
.cfi_escape 0x16, 30, 0x03, 0x0a, 0x34, 0x12
|
|
// CFA_val_expression pc breg30 0
|
|
.cfi_escape 0x16, 32, 0x02, 0x8e, 0x00
|
|
mov x0, x30
|
|
.cfi_register 32, x0
|
|
mov x30, 0x1234
|
|
ret x0
|
|
.cfi_endproc
|