2001-03-16 09:57:45 +00:00
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/* Wrapper around clone system call. 64 bit S/390 version.
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2020-01-01 00:14:33 +00:00
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Copyright (C) 2001-2020 Free Software Foundation, Inc.
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2000-08-02 15:15:00 +00:00
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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2001-03-16 09:57:45 +00:00
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This file is part of the GNU C Library.
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2000-08-02 15:15:00 +00:00
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:58:11 +00:00
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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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2000-08-02 15:15:00 +00:00
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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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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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2000-08-02 15:15:00 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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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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2000-08-02 15:15:00 +00:00
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/* clone is even more special than fork as it mucks with stacks
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and invokes a function in the right context after its all over. */
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#include <sysdep.h>
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2004-12-15 17:45:55 +00:00
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#include <tls.h>
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2000-08-02 15:15:00 +00:00
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#define _ERRNO_H 1
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#include <bits/errno.h>
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2003-01-28 10:42:28 +00:00
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/* int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
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2003-01-28 18:51:03 +00:00
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pid_t *parent_tid, void *tls, pid_t *child_tid); */
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2003-01-28 10:42:28 +00:00
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/* sys_clone (void *child_stack, unsigned long flags,
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pid_t *parent_tid, pid_t *child_tid, void *tls); */
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2000-08-02 15:15:00 +00:00
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.text
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ENTRY(__clone)
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2003-01-28 18:51:03 +00:00
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stg %r6,48(%r15) /* store %r6 to save area */
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Update.
2003-12-05 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/s390/s390-32/elf/setjmp.S (setjmp, __setjmp): Add END
statements.
* sysdeps/s390/s390-64/elf/setjmp.S (setjmp, __setjmp): Likewise.
* sysdeps/s390/s390-32/sysdep.h (ENTRY): Add cfi_startproc directive.
(END): Add cfi_endproc directive.
* sysdeps/s390/s390-64/sysdep.h (ENTRY, END): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/socket.S (__socket): Remove
cfi_startproc and cfi_endproc directive.
* sysdeps/unix/sysv/linux/s390/s390-64/socket.S (__socket): Likewise.
* sysdeps/s390/s390-32/addmul_1.S (__mpn_addmul_1): Add CFI directives.
* sysdeps/s390/s390-32/add_n.S (__mpn_add_n): Likewise.
* sysdeps/s390/s390-64/add_n.S (__mpn_add_n): Likewise.
* sysdeps/s390/s390-32/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
Likewise.
* sysdeps/s390/s390-64/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
Likewise.
* sysdeps/s390/s390-32/mul_1.S (__mpn_mul_1): Likewise.
* sysdeps/s390/s390-32/sub_n.S (__mpn_sub_n): Likewise.
* sysdeps/s390/s390-64/sub_n.S (__mpn_sub_n): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S (__mmap64): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S (__mmap): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/mmap.S (__mmap): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S (__syscall_error):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S (__syscall_error):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/clone.S (__clone): Add CFI
directives. Move thread_start out of ENTRY/PSEUDO_END block to
make backchain terminate.
* sysdeps/unix/sysv/linux/s390/s390-64/clone.S (__clone): Likewise.
* sysdeps/s390/s390-32/backtrace.c (trace_arg): New structure.
(unwind_backtrace, unwind_getip): New variables.
(init, __backchain_backtrace, backtrace_helper): New functions.
(__backtrace): Use unwind info for backtrace instead of backchain
walking if the unwind functions can be found.
* sysdeps/s390/s390-64/backtrace.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/posix_fadvise64.c: New file.
* sysdeps/unix/sysv/linux/s390/sys/procfs.h (ELF_NGREG32): New #define.
(elf_greg_t32, elf_gregset_t32, elf_fpregset_t32): New types.
(elf_prstatus32, elf_prpsinfo32): New structures.
(prgregset32_t, prfpregset32_t, prstatus32_t, prpsinfo32_t): New types.
* scripts/data/c++-types-s390-linux-gnu.data: New file.
* scripts/data/c++-types-s390x-linux-gnu.data: New file.
2003-12-06 00:20:16 +00:00
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cfi_offset (%r6,-112)
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2003-01-28 10:42:28 +00:00
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lgr %r0,%r5 /* move *arg out of the way */
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2003-01-28 18:51:03 +00:00
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ltgr %r1,%r2 /* check fn and move to %r1 */
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jz error /* no NULL function pointers */
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ltgr %r2,%r3 /* check child_stack and move to %r2 */
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jz error /* no NULL stack pointers */
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lgr %r3,%r4 /* move flags to %r3 */
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lgr %r4,%r6 /* move parent_tid to %r4 */
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lg %r5,168(%r15) /* load child_tid from stack */
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2003-01-30 21:09:44 +00:00
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lg %r6,160(%r15) /* load tls from stack */
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2001-03-16 09:57:45 +00:00
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svc SYS_ify(clone)
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ltgr %r2,%r2 /* check return code */
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jz thread_start
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Update.
2003-01-30 Jakub Jelinek <jakub@redhat.com>
* sysdeps/alpha/tls.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Avoid warnings about unused self
variable.
* sysdeps/ia64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
* sysdeps/s390/s390-32/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
* sysdeps/s390/s390-64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
* sysdeps/sh/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
* sysdeps/sparc/sparc32/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
* sysdeps/sparc/sparc64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC,
THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
2003-01-30 18:04:01 +00:00
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lg %r6,48(%r15) /* restore %r6 */
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jgm SYSCALL_ERROR_LABEL
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2001-03-16 09:57:45 +00:00
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br %r14
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2003-01-28 18:51:03 +00:00
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error:
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lghi %r2,-EINVAL
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jg SYSCALL_ERROR_LABEL
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Update.
2003-12-05 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/s390/s390-32/elf/setjmp.S (setjmp, __setjmp): Add END
statements.
* sysdeps/s390/s390-64/elf/setjmp.S (setjmp, __setjmp): Likewise.
* sysdeps/s390/s390-32/sysdep.h (ENTRY): Add cfi_startproc directive.
(END): Add cfi_endproc directive.
* sysdeps/s390/s390-64/sysdep.h (ENTRY, END): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/socket.S (__socket): Remove
cfi_startproc and cfi_endproc directive.
* sysdeps/unix/sysv/linux/s390/s390-64/socket.S (__socket): Likewise.
* sysdeps/s390/s390-32/addmul_1.S (__mpn_addmul_1): Add CFI directives.
* sysdeps/s390/s390-32/add_n.S (__mpn_add_n): Likewise.
* sysdeps/s390/s390-64/add_n.S (__mpn_add_n): Likewise.
* sysdeps/s390/s390-32/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
Likewise.
* sysdeps/s390/s390-64/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
Likewise.
* sysdeps/s390/s390-32/mul_1.S (__mpn_mul_1): Likewise.
* sysdeps/s390/s390-32/sub_n.S (__mpn_sub_n): Likewise.
* sysdeps/s390/s390-64/sub_n.S (__mpn_sub_n): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S (__mmap64): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S (__mmap): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/mmap.S (__mmap): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscall.S (syscall): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S (__syscall_error):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S (__syscall_error):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/clone.S (__clone): Add CFI
directives. Move thread_start out of ENTRY/PSEUDO_END block to
make backchain terminate.
* sysdeps/unix/sysv/linux/s390/s390-64/clone.S (__clone): Likewise.
* sysdeps/s390/s390-32/backtrace.c (trace_arg): New structure.
(unwind_backtrace, unwind_getip): New variables.
(init, __backchain_backtrace, backtrace_helper): New functions.
(__backtrace): Use unwind info for backtrace instead of backchain
walking if the unwind functions can be found.
* sysdeps/s390/s390-64/backtrace.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/posix_fadvise64.c: New file.
* sysdeps/unix/sysv/linux/s390/sys/procfs.h (ELF_NGREG32): New #define.
(elf_greg_t32, elf_gregset_t32, elf_fpregset_t32): New types.
(elf_prstatus32, elf_prpsinfo32): New structures.
(prgregset32_t, prfpregset32_t, prstatus32_t, prpsinfo32_t): New types.
* scripts/data/c++-types-s390-linux-gnu.data: New file.
* scripts/data/c++-types-s390x-linux-gnu.data: New file.
2003-12-06 00:20:16 +00:00
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PSEUDO_END (__clone)
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2000-08-02 15:15:00 +00:00
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thread_start:
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2017-11-21 07:45:28 +00:00
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cfi_startproc
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/* Mark r14 as undefined in order to stop unwinding here! */
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cfi_undefined (r14)
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2003-01-28 10:42:28 +00:00
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/* fn is in gpr 1, arg in gpr 0 */
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lgr %r2,%r0 /* set first parameter to void *arg */
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2001-05-16 16:12:54 +00:00
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aghi %r15,-160 /* make room on the stack for the save area */
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2003-01-28 10:42:28 +00:00
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xc 0(8,%r15),0(%r15)
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2001-03-16 09:57:45 +00:00
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basr %r14,%r1 /* jump to fn */
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2004-07-01 17:50:47 +00:00
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DO_CALL (exit, 1)
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2017-11-21 07:45:28 +00:00
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cfi_endproc
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2016-01-19 19:33:32 +00:00
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libc_hidden_def (__clone)
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2002-02-07 17:54:45 +00:00
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weak_alias (__clone, clone)
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