2003-03-17 11:22:52 +00:00
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/* Cancellable system call stubs. Linux/PowerPC64 version.
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2006-01-04 20:05:05 +00:00
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Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
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2003-03-17 11:22:52 +00:00
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This file is part of the GNU C Library.
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Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
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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, write to the Free
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2006-01-04 20:05:05 +00:00
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
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02110-1301 USA. */
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2003-03-17 11:22:52 +00:00
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#include <sysdep.h>
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#include <tls.h>
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#ifndef __ASSEMBLER__
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# include <nptl/pthreadP.h>
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#endif
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Update.
2003-06-15 Ulrich Drepper <drepper@redhat.com>
Fix cancellation point handling wrt exception based cleanup.
* io/Makefile: Compile fcntl.c, poll.c, and lockf.c with exceptions.
* misc/Makefile: Compile pselect.c, readv.c, writev.c, and usleep.c
with exceptions.
* posix/Makefile: Compile pread.c, pread64.c, pwrite.c, pwrite64.c,
sleep.c, wait.c, waitid.c, and waitpid.c with exceptions.
* rt/Makefile: Compile aio_suspend.c and clock_nanosleep.c with
exceptions.
* signal/Makefile: Compile sigpause.c, sigsuspend.c, sigtimedwait.c,
sigwait.c, and sigwaitinfo.c with exceptions.
* stdlib/Makefile: Compile system.c with exceptions.
* sysvipc/Makefile: Compile msgrcv.c and msgsnd.c with exceptions.
* termios/Makefile: Compile tcdrain.c with exceptions.
* sysdeps/generic/lockf.c: Add comment explaining the cancellation
situation.
* sysdeps/generic/pselect.c: Likewise.
* sysdeps/posix/sigpause.c: Likewise.
* sysdeps/posix/system.c: Likewise.
* sysdeps/posix/waitid.c: Likewise.
* sysdeps/unix/sysv/linux/sleep.c: Likewise.
* sysdeps/unix/sysv/linux/usleep.c: Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Major rewrite of
INTERNAL_SYSCALL to not use push inside asm statement so that
unwind info is correct around the syscall.
* sysdeps/unix/clock_nanosleep.c: Add cancellation support.
* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
2003-06-15 21:22:26 +00:00
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#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
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2003-03-17 11:22:52 +00:00
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Update.
2004-09-07 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/powerpc64/configure.in: New file.
* config.h.in (USE_PPC64_OVERLAPPING_OPD): Add.
* configure.in (HAVE_ASM_GLOBAL_DOT_NAME): Remove.
* sysdeps/powerpc/powerpc64/sysdep.h: Formatting.
(OPD_ENT, BODY_LABEL, ENTRY_1, ENTRY_2, END_2, DOT_PREFIX,
BODY_PREFIX): Define.
(ENTRY, DOT_LABEL, END, TRACEBACK, END_GEN_TB, EALIGN): Support
HAVE_ASM_GLOBAL_DOT_NAME or no dot symbols,
USE_PPC64_OVERLAPPING_OPD or never overlapping .opd entries.
* sysdeps/powerpc/powerpc64/dl-machine.h: Include sysdep.h.
(TRAMPOLINE_TEMPLATE, RTLD_START): Use the new sysdep.h macros.
2004-09-08 07:02:28 +00:00
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define DASHDASHPFX(str) .__##str
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# else
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# define DASHDASHPFX(str) __##str
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# endif
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2003-03-17 11:22:52 +00:00
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.section ".text"; \
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ENTRY (name) \
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SINGLE_THREAD_P; \
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bne- .Lpseudo_cancel; \
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Update.
2004-09-07 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/powerpc64/configure.in: New file.
* config.h.in (USE_PPC64_OVERLAPPING_OPD): Add.
* configure.in (HAVE_ASM_GLOBAL_DOT_NAME): Remove.
* sysdeps/powerpc/powerpc64/sysdep.h: Formatting.
(OPD_ENT, BODY_LABEL, ENTRY_1, ENTRY_2, END_2, DOT_PREFIX,
BODY_PREFIX): Define.
(ENTRY, DOT_LABEL, END, TRACEBACK, END_GEN_TB, EALIGN): Support
HAVE_ASM_GLOBAL_DOT_NAME or no dot symbols,
USE_PPC64_OVERLAPPING_OPD or never overlapping .opd entries.
* sysdeps/powerpc/powerpc64/dl-machine.h: Include sysdep.h.
(TRAMPOLINE_TEMPLATE, RTLD_START): Use the new sysdep.h macros.
2004-09-08 07:02:28 +00:00
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.type DASHDASHPFX(syscall_name##_nocancel),@function; \
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.globl DASHDASHPFX(syscall_name##_nocancel); \
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DASHDASHPFX(syscall_name##_nocancel): \
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2003-03-17 11:22:52 +00:00
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DO_CALL (SYS_ify (syscall_name)); \
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PSEUDO_RET; \
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Update.
2004-09-07 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/powerpc64/configure.in: New file.
* config.h.in (USE_PPC64_OVERLAPPING_OPD): Add.
* configure.in (HAVE_ASM_GLOBAL_DOT_NAME): Remove.
* sysdeps/powerpc/powerpc64/sysdep.h: Formatting.
(OPD_ENT, BODY_LABEL, ENTRY_1, ENTRY_2, END_2, DOT_PREFIX,
BODY_PREFIX): Define.
(ENTRY, DOT_LABEL, END, TRACEBACK, END_GEN_TB, EALIGN): Support
HAVE_ASM_GLOBAL_DOT_NAME or no dot symbols,
USE_PPC64_OVERLAPPING_OPD or never overlapping .opd entries.
* sysdeps/powerpc/powerpc64/dl-machine.h: Include sysdep.h.
(TRAMPOLINE_TEMPLATE, RTLD_START): Use the new sysdep.h macros.
2004-09-08 07:02:28 +00:00
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.size DASHDASHPFX(syscall_name##_nocancel),.-DASHDASHPFX(syscall_name##_nocancel); \
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2003-03-17 11:22:52 +00:00
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.Lpseudo_cancel: \
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stdu 1,-128(1); \
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2003-07-14 23:05:23 +00:00
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cfi_adjust_cfa_offset (128); \
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2003-03-17 11:22:52 +00:00
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mflr 9; \
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std 9,128+16(1); \
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2003-07-14 23:05:23 +00:00
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cfi_offset (lr, 16); \
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2003-03-17 11:22:52 +00:00
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DOCARGS_##args; /* save syscall args around CENABLE. */ \
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CENABLE; \
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std 3,72(1); /* store CENABLE return value (MASK). */ \
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UNDOCARGS_##args; /* restore syscall args. */ \
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DO_CALL (SYS_ify (syscall_name)); \
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mfcr 0; /* save CR/R3 around CDISABLE. */ \
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2003-07-14 23:05:23 +00:00
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std 3,64(1); \
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2003-03-17 11:22:52 +00:00
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std 0,8(1); \
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ld 3,72(1); /* pass MASK to CDISABLE. */ \
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CDISABLE; \
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ld 9,128+16(1); \
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ld 0,8(1); /* restore CR/R3. */ \
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2003-07-14 23:05:23 +00:00
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ld 3,64(1); \
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2003-03-17 11:22:52 +00:00
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mtlr 9; \
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mtcr 0; \
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2006-01-04 20:05:05 +00:00
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addi 1,1,128;
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2003-03-17 11:22:52 +00:00
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# define DOCARGS_0
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# define UNDOCARGS_0
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# define DOCARGS_1 std 3,80(1); DOCARGS_0
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# define UNDOCARGS_1 ld 3,80(1); UNDOCARGS_0
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# define DOCARGS_2 std 4,88(1); DOCARGS_1
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# define UNDOCARGS_2 ld 4,88(1); UNDOCARGS_1
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# define DOCARGS_3 std 5,96(1); DOCARGS_2
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# define UNDOCARGS_3 ld 5,96(1); UNDOCARGS_2
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# define DOCARGS_4 std 6,104(1); DOCARGS_3
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# define UNDOCARGS_4 ld 6,104(1); UNDOCARGS_3
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# define DOCARGS_5 std 7,112(1); DOCARGS_4
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# define UNDOCARGS_5 ld 7,112(1); UNDOCARGS_4
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# define DOCARGS_6 std 8,120(1); DOCARGS_5
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# define UNDOCARGS_6 ld 8,120(1); UNDOCARGS_5
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# ifdef IS_IN_libpthread
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# define CENABLE bl JUMPTARGET(__pthread_enable_asynccancel)
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# define CDISABLE bl JUMPTARGET(__pthread_disable_asynccancel)
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2003-06-17 08:58:31 +00:00
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# elif !defined NOT_IN_libc
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2003-03-17 11:22:52 +00:00
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# define CENABLE bl JUMPTARGET(__libc_enable_asynccancel)
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# define CDISABLE bl JUMPTARGET(__libc_disable_asynccancel)
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2003-06-17 08:58:31 +00:00
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# elif defined IS_IN_librt
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# define CENABLE bl JUMPTARGET(__librt_enable_asynccancel)
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# define CDISABLE bl JUMPTARGET(__librt_disable_asynccancel)
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# else
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# error Unsupported library
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2003-03-17 11:22:52 +00:00
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# endif
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# ifndef __ASSEMBLER__
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# define SINGLE_THREAD_P \
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2003-04-25 22:28:13 +00:00
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0, 1)
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2003-03-17 11:22:52 +00:00
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# else
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# define SINGLE_THREAD_P \
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lwz 10,MULTIPLE_THREADS_OFFSET(13); \
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2003-04-01 01:24:00 +00:00
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cmpwi 10,0
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2003-03-17 11:22:52 +00:00
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# endif
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#elif !defined __ASSEMBLER__
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2006-10-27 15:54:20 +00:00
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# ifdef IS_IN_rtld
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0, 1)
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# else
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# define SINGLE_THREAD_P (1)
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# endif
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2004-07-06 04:26:42 +00:00
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# define NO_CANCELLATION 1
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2003-03-17 11:22:52 +00:00
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#endif
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