binutils-gdb/gdb/testsuite/gdb.arch/thumb-singlestep.S

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/* Test program with deliberately incorrect execution mode transition
Copyright 2011-2016 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
.align 2
.global foo
.thumb
/* .thumb_func deliberately omitted */
foo:
mov r0,#42
bx lr
.text
.align 2
.global main
.thumb
.thumb_func
.type main, %function
main:
push {r3, lr}
blx foo
pop {r3, pc}
.size main, .-main