2018-12-21 01:48:04 +00:00
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/* longjmp with sp check for C-SKY ABIV2.
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2025-01-01 18:14:45 +00:00
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Copyright (C) 2018-2025 Free Software Foundation, Inc.
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2018-12-21 01:48:04 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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2018-12-21 01:48:04 +00:00
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#include <sysdep.h>
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.section .rodata.str1.8,"aMS",@progbits,1
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.align 2
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.type longjmp_msg,@object
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longjmp_msg:
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.string "longjmp causes uninitialized stack frame"
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.size longjmp_msg, .-longjmp_msg
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.text
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#define __longjmp ____longjmp_chk
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#ifdef __PIC__
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# define CALL_FAIL \
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subi sp, 8; \
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stw gb, (sp, 0); \
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grs gb, .Lgetpc1; \
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.Lgetpc1: \
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lrw t0, .Lgetpc1@GOTPC; \
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addu gb, gb, t0; \
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lrw a0, longjmp_msg@GOTOFF; \
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addu a0, a0, gb; \
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lrw t0, (HIDDEN_JUMPTARGET (__fortify_fail))@PLT; \
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ldr.w t0, (gb, t0 << 0); \
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jsr t0; \
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ldw gb, (sp, 0); \
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addi sp, 8;
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#else /* __PIC__ */
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# define CALL_FAIL \
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lrw a0, longjmp_msg; \
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jsri HIDDEN_JUMPTARGET (__fortify_fail);
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#endif /* __PIC__ */
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# define CHECK_SP(reg) \
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cmplt sp, reg; \
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bt .Lok1; \
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mov r9, a0; \
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mov t0, r7; \
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lrw r7, __NR_sigaltstack; \
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movi a0, 0; \
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subi sp, 12; /* sizeof (stack_t) */ \
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mov a1, sp; \
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trap 0; \
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mov r7, t0; \
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cmpnei a0, 0; \
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bt .Lok; \
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ldw a1, (sp, 4); \
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btsti a1, 1; \
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bt .Lfail; \
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ldw a1, (sp, 0); \
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ldw a3, (sp, 8); \
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add a1, a3; \
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sub a1, reg; \
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cmphs a1, a3; \
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bt .Lok; \
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.Lfail: \
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addi sp, 12; \
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CALL_FAIL \
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.Lok: \
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mov a0, r9; \
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.Lok1:
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#include <__longjmp.S>
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