65 lines
3.0 KiB
ArmAsm
65 lines
3.0 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
|
|
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ 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; version 2 of the License. │
|
|
│ │
|
|
│ 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, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/dce.h"
|
|
#include "libc/runtime/internal.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
#include "libc/sysv/consts/nr.h"
|
|
#include "libc/macros.h"
|
|
.real
|
|
.source __FILE__
|
|
|
|
/ Terminates program abnormally.
|
|
/
|
|
/ This function first tries to trigger your SIGABRT handler. If
|
|
/ there isn't one or execution resumes, then abort() terminates
|
|
/ the program using an escalating variety methods of increasing
|
|
/ brutality.
|
|
/
|
|
/ @forcealignargpointer
|
|
/ @asyncsignalsafe
|
|
/ @noreturn
|
|
abort: push %rbp
|
|
mov %rsp,%rbp
|
|
and $-16,%rsp
|
|
sub $16,%rsp
|
|
orl $RUNSTATE_BROKEN,g_runstate(%rip)
|
|
testb IsWindows()
|
|
jnz 2f
|
|
mov SIG_SETMASK,%edi
|
|
mov %rsp,%rsi
|
|
push $0xffffffffffffffdf # all bits blocked but SIGABRT
|
|
push $0xffffffffffffffff # assumes von neum. arithmetic
|
|
pop 8(%rsi)
|
|
pop (%rsi)
|
|
xor %edx,%edx # don't care about old sigmask
|
|
pushpop 4*4,%r10 # sizeof(sigset_t) for systemd
|
|
mov __NR_sigprocmask,%eax # sigprocmask$sysv is hookable
|
|
syscall
|
|
mov __NR_getpid,%eax
|
|
syscall
|
|
mov %eax,%edi
|
|
mov SIGABRT,%esi
|
|
mov __NR_kill,%eax
|
|
syscall # avoid hook and less bt noise
|
|
2: mov $134,%edi # exit(128+SIGABRT) [bash-ism]
|
|
call _Exit
|
|
.endfn abort,globl,protected
|
|
.hidden g_runstate
|