mirror of
https://sourceware.org/git/glibc.git
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5a82c74822
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
94 lines
3.0 KiB
ArmAsm
94 lines
3.0 KiB
ArmAsm
/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
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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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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#define ENV(base,reg) [%base + (reg * 4)]
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#define ST_FLUSH_WINDOWS 3
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ENTRY(__longjmp)
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/* Store our arguments in global registers so we can still
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use them while unwinding frames and their register windows. */
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ld ENV(o0,JB_FP), %g3 /* Cache target FP in register %g3. */
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE (%g3, %g3, %g4)
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#endif
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mov %o0, %g1 /* ENV in %g1 */
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orcc %o1, %g0, %g2 /* VAL in %g2 */
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be,a 0f /* Branch if zero; else skip delay slot. */
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mov 1, %g2 /* Delay slot only hit if zero: VAL = 1. */
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0:
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xor %fp, %g3, %o0
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add %fp, 512, %o1
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andncc %o0, 4095, %o0
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bne LOC(thread)
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cmp %o1, %g3
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bl LOC(thread)
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/* Now we will loop, unwinding the register windows up the stack
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until the restored %fp value matches the target value in %g3. */
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LOC(loop):
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cmp %fp, %g3 /* Have we reached the target frame? */
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bl,a LOC(loop) /* Loop while current fp is below target. */
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restore /* Unwind register window in delay slot. */
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be,a LOC(found) /* Better have hit it exactly. */
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ld ENV(g1,JB_SP), %o0 /* Delay slot: extract target SP. */
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LOC(thread):
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save %sp, -96, %sp
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/*
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* Do a "flush register windows trap". The trap handler in the
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* kernel writes all the register windows to their stack slots, and
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* marks them all as invalid (needing to be sucked up from the
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* stack when used). This ensures that all information needed to
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* unwind to these callers is in memory, not in the register
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* windows.
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*/
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ta ST_FLUSH_WINDOWS
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#ifdef PTR_DEMANGLE
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ld ENV(g1,JB_PC), %g5 /* Set return PC. */
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ld ENV(g1,JB_SP), %g1 /* Set saved SP on restore below. */
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PTR_DEMANGLE2 (%i7, %g5, %g4)
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PTR_DEMANGLE2 (%fp, %g1, %g4)
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#else
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ld ENV(g1,JB_PC), %i7 /* Set return PC. */
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ld ENV(g1,JB_SP), %fp /* Set saved SP on restore below. */
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#endif
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jmp %i7 + 8
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restore %g2, 0, %o0 /* Restore values from above register frame. */
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LOC(found):
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/* We have unwound register windows so %fp matches the target. */
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE2 (%sp, %o0, %g4)
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#else
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mov %o0, %sp /* OK, install new SP. */
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#endif
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LOC(sp_ok):
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ld ENV(g1,JB_PC), %o0 /* Extract target return PC. */
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE2 (%o0, %o0, %g4)
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#endif
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jmp %o0 + 8 /* Return there. */
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mov %g2, %o0 /* Delay slot: set return value. */
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END(__longjmp)
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