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/* Copyright 2018-2025 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/>. */
.section .note.GNU-stack,"",%progbits
.data
value_callee:
.quad 0x2021222324252627
value_caller:
.quad 0x1011121314151617
.text
.global callee
callee:
/* Standard prologue:
- push fp (x29) and lr (x30) to the stack.
- mov sp to fp */
.cfi_startproc
stp x29, x30, [sp, -16]!
.cfi_def_cfa 29, 16
.cfi_offset 29, -16
.cfi_offset 30, -8
mov x29, sp
/* Save caller's x19 value on the stack. */
.cfi_offset 19, -32
str x19, [sp, -16]!
/* Put our own x19 value. */
adr x0, value_callee
ldr x19, [x0]
break_here_asm:
/* Restore caller's x19 value. */
ldr x19, [sp], 16
/* Standard epilogue:
- pop fp (x29) and lr (x30) from the stack */
ldp x29, x30, [sp], 16
ret
.cfi_endproc
.global caller
caller:
/* Standard prologue. */
.cfi_startproc
stp x29, x30, [sp, -16]!
.cfi_def_cfa 29, 16
.cfi_offset x29, -16
.cfi_offset x30, -8
add x29, sp, 0
/* Put our own x19 value. */
adr x0, value_caller
ldr x19, [x0]
/* Call callee. */
bl callee
/* Store our x19 value in x0 to return it. */
mov x0, x19
/* Standard epilogue. */
ldp x29, x30, [sp], 16
ret
.cfi_endproc
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