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
105 lines
2.9 KiB
ArmAsm
105 lines
2.9 KiB
ArmAsm
/* Copyright (C) 2009-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
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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 <tcb-offsets.h>
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#include <kernel-features.h>
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#include <lowlevellock-futex.h>
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#define PTHREAD_UNWIND JUMPTARGET(__pthread_unwind)
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#if IS_IN (libpthread)
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# if defined SHARED && !defined NO_HIDDEN
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# undef PTHREAD_UNWIND
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# define PTHREAD_UNWIND __GI___pthread_unwind
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# endif
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#else
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# ifndef SHARED
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.weak __pthread_unwind
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# endif
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#endif
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#define LOAD_PRIVATE_FUTEX_WAIT(reg) \
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movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
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/* It is crucial that the functions in this file don't modify registers
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other than %rax and %r11. The syscall wrapper code depends on this
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because it doesn't explicitly save the other registers which hold
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relevant values. */
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.text
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.hidden __pthread_enable_asynccancel
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ENTRY(__pthread_enable_asynccancel)
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movl %fs:CANCELHANDLING, %eax
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2: movl %eax, %r11d
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orl $TCB_CANCELTYPE_BITMASK, %r11d
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cmpl %eax, %r11d
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je 1f
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lock
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cmpxchgl %r11d, %fs:CANCELHANDLING
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jnz 2b
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andl $(TCB_CANCELSTATE_BITMASK|TCB_CANCELTYPE_BITMASK|TCB_CANCELED_BITMASK|TCB_EXITING_BITMASK|TCB_CANCEL_RESTMASK|TCB_TERMINATED_BITMASK), %r11d
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cmpl $(TCB_CANCELTYPE_BITMASK|TCB_CANCELED_BITMASK), %r11d
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je 3f
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1: ret
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3: subq $8, %rsp
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cfi_adjust_cfa_offset(8)
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LP_OP(mov) $TCB_PTHREAD_CANCELED, %fs:RESULT
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lock
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orl $TCB_EXITING_BITMASK, %fs:CANCELHANDLING
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mov %fs:CLEANUP_JMP_BUF, %RDI_LP
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call PTHREAD_UNWIND
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hlt
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END(__pthread_enable_asynccancel)
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.hidden __pthread_disable_asynccancel
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ENTRY(__pthread_disable_asynccancel)
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testl $TCB_CANCELTYPE_BITMASK, %edi
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jnz 1f
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movl %fs:CANCELHANDLING, %eax
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2: movl %eax, %r11d
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andl $~TCB_CANCELTYPE_BITMASK, %r11d
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lock
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cmpxchgl %r11d, %fs:CANCELHANDLING
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jnz 2b
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movl %r11d, %eax
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3: andl $(TCB_CANCELING_BITMASK|TCB_CANCELED_BITMASK), %eax
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cmpl $TCB_CANCELING_BITMASK, %eax
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je 4f
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1: ret
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/* Performance doesn't matter in this loop. We will
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delay until the thread is canceled. And we will unlikely
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enter the loop twice. */
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4: mov %fs:0, %RDI_LP
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movl $__NR_futex, %eax
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xorq %r10, %r10
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addq $CANCELHANDLING, %rdi
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LOAD_PRIVATE_FUTEX_WAIT (%esi)
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syscall
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movl %fs:CANCELHANDLING, %eax
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jmp 3b
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END(__pthread_disable_asynccancel)
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