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/* Copyright 2009-2021 Free Software Foundation, Inc.
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/>.
This file is part of the gdb testsuite.
It tests displaced stepping over various insns that require special
handling. */
.text
.global main
main:
nop
/***********************************************/
/* Test call/ret. */
nop
.global test_call
test_call:
call test_call_subr
nop
.global test_ret_end
test_ret_end:
nop
/***********************************************/
/* Absolute jump with leading prefixes.
These don't occur in normal code, but gdb should still DTRT. */
nop
.global test_prefixed_abs_jump
test_prefixed_abs_jump:
ds
jmp *test_prefixed_abs_jump_addr
.data
test_prefixed_abs_jump_addr:
.4byte test_prefixed_abs_jump_target
.text
test_prefixed_abs_jump_target:
nop
.global test_prefixed_abs_jump_end
test_prefixed_abs_jump_end:
nop
/***********************************************/
/* Test syscall. */
mov $0x14,%eax /* getpid */
.global test_syscall
test_syscall:
int $0x80
nop
.global test_syscall_end
test_syscall_end:
nop
/***********************************************/
/* Test syscall again, this time with a prefix.
These don't occur in normal code, but gdb should still DTRT. */
mov $0x14,%eax /* getpid */
.global test_prefixed_syscall
test_prefixed_syscall:
repnz
int $0x80
nop
.global test_prefixed_syscall_end
test_prefixed_syscall_end:
nop
/***********************************************/
/* Test stepping over int3.
The prefixes are pointless, but it's possible, so we exercise it. */
nop
.global test_int3
test_int3:
repz
repz
int3
nop
.global test_int3_end
test_int3_end:
nop
/***********************************************/
/* all done */
pushl $0
call exit
hlt
/***********************************************/
/* subroutine to help test call/ret */
test_call_subr:
nop
.global test_call_end
test_call_end:
nop
.global test_ret
test_ret:
ret
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