forked from Imagelibrary/binutils-gdb
15f070da4e
- New in this series version:
- gdb.threads/step-over-thread-exit.exp has a couple new testing axes:
- non-stop vs all-stop.
- in non-stop have the testcase explicitly stop all threads in
non-stop mode, vs not doing that.
- bail out of gdb.threads/step-over-thread-exit.exp early on FAIL, to
avoid cascading timeouts.
Add new gdb.threads/step-over-thread-exit.exp and
gdb.threads/step-over-thread-exit-while-stop-all-threads.exp
testcases, exercising stepping over thread exit syscall. These make
use of lib/my-syscalls.S to define the exit syscall.
Co-authored-by: Pedro Alves <pedro@palves.net>
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=27338
Change-Id: Ie8b2c5747db99b7023463a897a8390d9e814a9c9
77 lines
2.2 KiB
ArmAsm
77 lines
2.2 KiB
ArmAsm
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2020-2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This file implements simple Linux syscall wrappers, to be used by tests that
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need to know exactly where the syscall instructions are. */
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#include <asm/unistd.h>
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/* The SYSCALL macro below current supports calling syscalls with up
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to 3 arguments, and, assumes the syscall never returns, like exec
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and exit. If you need to call syscalls with more arguments or you
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need to call syscalls that actually return, you'll need to update
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the macros. We don't bother with optimizing setting up fewer
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arguments for syscalls that take fewer arguments, as we're not
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optimizating for speed or space, but for maintainability. */
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#if defined(__x86_64__)
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#define SYSCALL(NAME, NR) \
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.global NAME ;\
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NAME: ;\
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mov $NR, %rax ;\
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/* rdi, rsi and rdx already contain the right arguments. */ \
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NAME ## _syscall: ;\
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syscall ;\
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ret ;
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#elif defined(__i386__)
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#define SYSCALL(NAME, NR) \
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.global NAME ;\
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NAME: ;\
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mov $NR, %eax ;\
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mov 4(%esp), %ebx ;\
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mov 8(%esp), %ecx ;\
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mov 12(%esp), %edx ;\
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NAME ## _syscall: ;\
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int $0x80 ;\
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ret
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#elif defined(__aarch64__)
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#define SYSCALL(NAME, NR) \
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.global NAME ;\
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NAME: ;\
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mov x8, NR ;\
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/* x0, x1 and x2 already contain the right arguments. */ \
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NAME ## _syscall: ;\
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svc #0
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#else
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# error "Unsupported architecture"
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#endif
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SYSCALL (my_execve, __NR_execve)
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/* void my_exit (int code); */
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SYSCALL (my_exit, __NR_exit)
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.section .note.GNU-stack,"",@progbits
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