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/* Copyright 2010, 2011 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/>. */
.syntax unified
.text
.type main,%function
#if defined (__thumb__) || defined (__thumb2__)
.code 16
.thumb_func
#endif
.globl main
main:
push {r7, lr}
add sp, sp, #4
mov r7, sp
/* Test call and return */
.global test_call
test_call:
bl test_call_subr
.global test_ret_end
test_ret_end:
nop @ Location test_ret_end
/* Test branch */
bl test_branch
/* Test ldr from pc */
bl test_ldr_pc
/* Test ldm/stm only in ARM mode */
#if !defined (__thumb__) && !defined (__thumb2__)
bl test_ldm_stm_pc
#endif
/* Test str in ARM mode and Thumb-2 */
#if !defined(__thumb__)
bl test_str_pc
#endif
/* Return */
mov sp, r7
sub sp, sp, #4
movs r0, #0
pop {r7, pc}
.size main, .-main
.global test_call_subr
#if defined (__thumb__) || defined (__thumb2__)
.code 16
.thumb_func
#endif
.type test_call_subr, %function
test_call_subr:
nop
.global test_call_end
test_call_end:
nop @ Location test_call_end
.global test_ret
test_ret:
bx lr
.size test_call_subr, .-test_call_subr
.global test_branch
#if defined (__thumb__) || defined (__thumb2__)
.code 16
.thumb_func
#endif
.type test_branch, %function
test_branch:
b L_branch
.global
L_branch:
bx lr
.size test_branch, .-test_branch
.global test_ldr_pc
#if defined (__thumb__) || defined (__thumb2__)
.code 16
.thumb_func
#endif
.type test_ldr_pc, %function
test_ldr_pc:
ldr r1, [pc, #0]
.global
test_ldr_pc_ret:
bx lr
.size test_ldr_pc, .-test_ldr_pc
#if !defined (__thumb__) && !defined (__thumb2__)
.global test_ldm_stm_pc
.type test_ldm_stm_pc, %function
test_ldm_stm_pc:
stmdb sp!, {lr, pc}
ldmia sp!, {r0, r1}
ldr r0, .L1
stmdb sp!, {r0}
.global
test_ldm_pc:
ldmia sp!, {pc}
.global
test_ldm_stm_pc_ret:
bx lr
.align 2
.L1:
.word test_ldm_stm_pc_ret
.size test_ldm_stm_pc, .-test_ldm_stm_pc
#endif
#if !defined(__thumb__)
#if defined (__thumb2__)
.code 16
.thumb_func
#endif
.global test_str_pc
.type test_str_pc, %function
test_str_pc:
str pc, [sp, #-4]
ldr r0, [sp, #-4]
sub r0, r0, pc
/* compute offset again without displaced stepping. */
str pc, [sp, #-4]
ldr r1, [sp, #-4]
sub r1, r1, pc
/* r0 should be equal to r1. */
cmp r0, r1
bne pc_offset_wrong
.global pc_offset_right
pc_offset_right:
b test_str_pc_end
.global pc_offset_wrong
pc_offset_wrong:
nop
.global test_str_pc_end
test_str_pc_end:
bx lr
#endif
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