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glibc/sysdeps/unix/sysv/linux/mips/vfork.S

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Update copyright dates with scripts/update-copyrights
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/* Copyright (C) 2005-2023 Free Software Foundation, Inc.
Linux/MIPS vfork implementation.
2005-03-28 09:16:12 +00:00
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
Replace FSF snail mail address by URL.
2012-03-09 23:56:38 +00:00
License along with the GNU C Library. If not, see
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
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<https://www.gnu.org/licenses/>. */
Linux/MIPS vfork implementation.
2005-03-28 09:16:12 +00:00
/* vfork() is just a special case of clone(). */
#include <sys/asm.h>
#include <sysdep.h>
#include <sgidefs.h>
MIPS: Consolidate NPTL/non versions of vfork
2014-06-27 16:58:51 +00:00
#include <tls.h>
Linux/MIPS vfork implementation.
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/* int vfork() */
.text
Add support for building as MIPS16 code.
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.set nomips16
Linux/MIPS vfork implementation.
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LOCALSZ= 1
FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
GPOFF= FRAMESZ-(1*SZREG)
MIPS, SPARC: more fixes to the vfork aliases in libpthread.so Commit 43c29487 tried to fix the vfork aliases in libpthread.so on MIPS and SPARC, but failed to do it correctly, introducing an ABI change. This patch does the remaining changes needed to align the MIPS and SPARC vfork implementations with the other architectures. That way the the alpha version of pt-vfork.S works correctly for MIPS and SPARC. The changes for alpha were done in 82aab97c. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Rename into __libc_vfork. (__vfork) [IS_IN (libc)]: Remove alias. (__libc_vfork) [IS_IN (libc)]: Define as an alias. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
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NESTED(__libc_vfork,FRAMESZ,sp)
Linux/MIPS vfork implementation.
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#ifdef __PIC__
SETUP_GP
#endif
PTR_SUBU sp, FRAMESZ
Add CFI information for MIPS assembly sources.
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cfi_adjust_cfa_offset (FRAMESZ)
MIPS, SPARC: more fixes to the vfork aliases in libpthread.so Commit 43c29487 tried to fix the vfork aliases in libpthread.so on MIPS and SPARC, but failed to do it correctly, introducing an ABI change. This patch does the remaining changes needed to align the MIPS and SPARC vfork implementations with the other architectures. That way the the alpha version of pt-vfork.S works correctly for MIPS and SPARC. The changes for alpha were done in 82aab97c. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Rename into __libc_vfork. (__vfork) [IS_IN (libc)]: Remove alias. (__libc_vfork) [IS_IN (libc)]: Define as an alias. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
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SETUP_GP64_REG (a5, __libc_vfork)
Linux/MIPS vfork implementation.
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#ifdef __PIC__
SAVE_GP (GPOFF)
#endif
#ifdef PROF
# if (_MIPS_SIM != _ABIO32)
PTR_S a5, GPOFF(sp)
# endif
.set noat
move $1, ra
# if (_MIPS_SIM == _ABIO32)
subu sp,sp,8
# endif
jal _mcount
.set at
# if (_MIPS_SIM != _ABIO32)
PTR_L a5, GPOFF(sp)
# endif
#endif
PTR_ADDU sp, FRAMESZ
Add CFI information for MIPS assembly sources.
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cfi_adjust_cfa_offset (-FRAMESZ)
Linux/MIPS vfork implementation.
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li a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
move a1, sp
/* Do the system call */
li v0,__NR_clone
syscall
Add CFI information for MIPS assembly sources.
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cfi_remember_state
Linux/MIPS vfork implementation.
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bnez a3,L(error)
/* Successful return from the parent or child. */
Add CFI information for MIPS assembly sources.
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RESTORE_GP64_REG
Linux/MIPS vfork implementation.
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ret
/* Something bad happened -- no child created. */
L(error):
Add CFI information for MIPS assembly sources.
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cfi_restore_state
Linux/MIPS vfork implementation.
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#ifdef __PIC__
PTR_LA t9, __syscall_error
Add CFI information for MIPS assembly sources.
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RESTORE_GP64_REG
Linux/MIPS vfork implementation.
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jr t9
#else
Add CFI information for MIPS assembly sources.
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RESTORE_GP64_REG
Linux/MIPS vfork implementation.
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j __syscall_error
#endif
MIPS, SPARC: more fixes to the vfork aliases in libpthread.so Commit 43c29487 tried to fix the vfork aliases in libpthread.so on MIPS and SPARC, but failed to do it correctly, introducing an ABI change. This patch does the remaining changes needed to align the MIPS and SPARC vfork implementations with the other architectures. That way the the alpha version of pt-vfork.S works correctly for MIPS and SPARC. The changes for alpha were done in 82aab97c. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Rename into __libc_vfork. (__vfork) [IS_IN (libc)]: Remove alias. (__libc_vfork) [IS_IN (libc)]: Define as an alias. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
2016-06-21 21:59:37 +00:00
END(__libc_vfork)
Linux/MIPS vfork implementation.
2005-03-28 09:16:12 +00:00
MIPS, SPARC: fix wrong vfork aliases in libpthread.so With recent binutils versions the GNU libc fails to build on at least MISP and SPARC, with this kind of error: /home/aurel32/glibc/glibc-build/nptl/libpthread.so:(*IND*+0x0): multiple definition of `vfork@GLIBC_2.0' /home/aurel32/glibc/glibc-build/nptl/libpthread.so::(.text+0xee50): first defined here It appears that on these architectures pt-vfork.S includes vfork.S (through the alpha version of pt-vfork.S) and that the __vfork aliases are not conditionalized on IS_IN (libc) like on other architectures. Therefore the aliases are also wrongly included in libpthread.so. Fix this by properly conditionalizing the aliases like on other architectures. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Conditionalize hidden_def, weak_alias and strong_alias on [IS_IN (libc)]. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
2016-06-18 17:11:23 +00:00
#if IS_IN (libc)
MIPS, SPARC: more fixes to the vfork aliases in libpthread.so Commit 43c29487 tried to fix the vfork aliases in libpthread.so on MIPS and SPARC, but failed to do it correctly, introducing an ABI change. This patch does the remaining changes needed to align the MIPS and SPARC vfork implementations with the other architectures. That way the the alpha version of pt-vfork.S works correctly for MIPS and SPARC. The changes for alpha were done in 82aab97c. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Rename into __libc_vfork. (__vfork) [IS_IN (libc)]: Remove alias. (__libc_vfork) [IS_IN (libc)]: Define as an alias. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
2016-06-21 21:59:37 +00:00
weak_alias (__libc_vfork, vfork)
strong_alias (__libc_vfork, __vfork)
libc_hidden_def (__vfork)
MIPS, SPARC: fix wrong vfork aliases in libpthread.so With recent binutils versions the GNU libc fails to build on at least MISP and SPARC, with this kind of error: /home/aurel32/glibc/glibc-build/nptl/libpthread.so:(*IND*+0x0): multiple definition of `vfork@GLIBC_2.0' /home/aurel32/glibc/glibc-build/nptl/libpthread.so::(.text+0xee50): first defined here It appears that on these architectures pt-vfork.S includes vfork.S (through the alpha version of pt-vfork.S) and that the __vfork aliases are not conditionalized on IS_IN (libc) like on other architectures. Therefore the aliases are also wrongly included in libpthread.so. Fix this by properly conditionalizing the aliases like on other architectures. Changelog: * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Conditionalize hidden_def, weak_alias and strong_alias on [IS_IN (libc)]. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
2016-06-18 17:11:23 +00:00
#endif
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