From daecc9a410a6f23d80daf8ce3afd280fea329e63 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 18 Nov 2010 14:58:01 +0000 Subject: metag: Add NPTL support Signed-off-by: Markos Chandras Signed-off-by: Bernhard Reutner-Fischer --- .../nptl/sysdeps/unix/sysv/linux/metag/Makefile | 13 + .../sysdeps/unix/sysv/linux/metag/Makefile.arch | 34 +++ .../unix/sysv/linux/metag/bits/pthreadtypes.h | 181 +++++++++++++ .../sysdeps/unix/sysv/linux/metag/bits/semaphore.h | 35 +++ .../nptl/sysdeps/unix/sysv/linux/metag/clone.S | 9 + .../sysdeps/unix/sysv/linux/metag/createthread.c | 23 ++ .../nptl/sysdeps/unix/sysv/linux/metag/fork.c | 31 +++ .../unix/sysv/linux/metag/libc-lowlevellock.c | 21 ++ .../sysdeps/unix/sysv/linux/metag/lowlevellock.c | 134 ++++++++++ .../sysdeps/unix/sysv/linux/metag/lowlevellock.h | 279 +++++++++++++++++++++ .../unix/sysv/linux/metag/pt-__syscall_error.c | 7 + .../sysv/linux/metag/pt-__syscall_rt_sigaction.c | 7 + .../unix/sysv/linux/metag/pt-gettimeofday.c | 11 + .../nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S | 51 ++++ .../sysdeps/unix/sysv/linux/metag/pthread_once.c | 100 ++++++++ .../sysdeps/unix/sysv/linux/metag/sysdep-cancel.h | 152 +++++++++++ .../nptl/sysdeps/unix/sysv/linux/metag/vfork.S | 56 +++++ 17 files changed, 1144 insertions(+) create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/pthreadtypes.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/semaphore.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/createthread.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/fork.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_error.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_rt_sigaction.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-gettimeofday.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/pthread_once.c create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/sysdep-cancel.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux') diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile new file mode 100644 index 000000000..729adf6f9 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile @@ -0,0 +1,13 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2005 Steven J. Hill +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +top_srcdir=../../../../../../../ +top_builddir=../../../../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch new file mode 100644 index 000000000..bcee1685c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch @@ -0,0 +1,34 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2006 Steven J. Hill +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +libpthread_linux_arch_SSRC = pt-vfork.S +libpthread_linux_arch_CSRC = pthread_once.c \ + pt-__syscall_rt_sigaction.c pt-__syscall_error.c \ + lowlevellock.c + +libc_linux_arch_CSRC = fork.c libc-lowlevellock.c +libc_linux_arch_SSRC = clone.S vfork.S +libc_linux_arch_SSRC-OMIT = waitpid.S + +CFLAGS += $(SSP_ALL_CFLAGS) + +CFLAGS-pthread_once.c = -DNOT_IN_libc -DIS_IN_libpthread +CFLAGS-pt-__syscall_rt_sigaction.c = -DNOT_IN_libc -DIS_IN_libpthread +CFLAGS-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread +CFLAGS-pt-__syscall_error.c = -DNOT_IN_libc -DIS_IN_libpthread +ASFLAGS-vfork.S = -DIS_IN_libc -DNOT_IN_libpthread +ASFLAGS-clone.S = -DIS_IN_libc -DNOT_IN_libpthread +ASFLAGS-pt-vfork.S = -DNOT_IN_libc -DIS_IN_libpthread + +ifeq ($(UCLIBC_HAS_STDIO_FUTEXES),y) +CFLAGS-fork.c = -D__USE_STDIO_FUTEXES__ +endif +CFLAGS-OMIT-fork.c = -DNOT_IN_libc -DIS_IN_libpthread +CFLAGS-OMIT-libc-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread +# We always compile it in arm mode because of SAVE_PID macro +# This macro should be alternatively implemented in THUMB +# assembly. diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/pthreadtypes.h new file mode 100644 index 000000000..e1b115c8c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/pthreadtypes.h @@ -0,0 +1,181 @@ +/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _BITS_PTHREADTYPES_H +#define _BITS_PTHREADTYPES_H 1 + +#include + +#define __SIZEOF_PTHREAD_ATTR_T 36 +#define __SIZEOF_PTHREAD_MUTEX_T 24 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_COND_COMPAT_T 12 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCK_T 32 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +#define __SIZEOF_PTHREAD_BARRIER_T 20 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + + +/* Thread identifiers. The structure of the attribute type is not + exposed on purpose. */ +typedef unsigned long int pthread_t; + + +typedef union +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +} pthread_attr_t; + + +typedef struct __pthread_internal_slist +{ + struct __pthread_internal_slist *__next; +} __pthread_slist_t; + + +/* Data structures for mutex handling. The structure of the attribute + type is not exposed on purpose. */ +typedef union +{ + struct __pthread_mutex_s + { + int __lock; + unsigned int __count; + int __owner; + /* KIND must stay at this position in the structure to maintain + binary compatibility. */ + int __kind; + unsigned int __nusers; + __extension__ union + { + int __spins; + __pthread_slist_t __list; + }; + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_MUTEXATTR_T]; + long int __align; +} pthread_mutexattr_t; + + +/* Data structure for conditional variable handling. The structure of + the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __futex; + __extension__ unsigned long long int __total_seq; + __extension__ unsigned long long int __wakeup_seq; + __extension__ unsigned long long int __woken_seq; + void *__mutex; + unsigned int __nwaiters; + unsigned int __broadcast_seq; + } __data; + char __size[__SIZEOF_PTHREAD_COND_T]; + __extension__ long long int __align; +} pthread_cond_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_CONDATTR_T]; + long int __align; +} pthread_condattr_t; + + +/* Keys for thread-specific data */ +typedef unsigned int pthread_key_t; + + +/* Once-only execution */ +typedef int pthread_once_t; + + +#if defined __USE_UNIX98 || defined __USE_XOPEN2K +/* Data structure for read-write lock variable handling. The + structure of the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __nr_readers; + unsigned int __readers_wakeup; + unsigned int __writer_wakeup; + unsigned int __nr_readers_queued; + unsigned int __nr_writers_queued; +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned char __pad1; + unsigned char __pad2; + unsigned char __shared; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; +#else + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; + unsigned char __shared; + unsigned char __pad1; + unsigned char __pad2; +#endif + int __writer; + } __data; + char __size[__SIZEOF_PTHREAD_RWLOCK_T]; + long int __align; +} pthread_rwlock_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T]; + long int __align; +} pthread_rwlockattr_t; +#endif + + +#ifdef __USE_XOPEN2K +/* POSIX spinlock data type. */ +typedef volatile int pthread_spinlock_t; + + +/* POSIX barriers data type. The structure of the type is + deliberately not exposed. */ +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIER_T]; + long int __align; +} pthread_barrier_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIERATTR_T]; + int __align; +} pthread_barrierattr_t; +#endif + + +#endif /* bits/pthreadtypes.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/semaphore.h new file mode 100644 index 000000000..dadfac2af --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/bits/semaphore.h @@ -0,0 +1,35 @@ +/* Copyright (C) 2002, 2005, 2007 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SEMAPHORE_H +# error "Never use directly; include instead." +#endif + + +#define __SIZEOF_SEM_T 16 + + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S new file mode 100644 index 000000000..f5c5c7c5d --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S @@ -0,0 +1,9 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#define RESET_PID +#include +#include "../../../../../../../libc/sysdeps/linux/metag/clone.S" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/createthread.c new file mode 100644 index 000000000..2d4355980 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/createthread.c @@ -0,0 +1,23 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Value passed to 'clone' for initialization of the thread register. */ +#define TLS_VALUE (pd + 1) + +/* Get the real implementation. */ +#include diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/fork.c new file mode 100644 index 000000000..41776f9bc --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/fork.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Phil Blundell , 2005 + + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include +#include + + +#define ARCH_FORK() \ + INLINE_SYSCALL (clone, 5, \ + CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, \ + NULL, NULL, &THREAD_SELF->tid, NULL) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c new file mode 100644 index 000000000..b19282281 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c @@ -0,0 +1,21 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras , 2003. + + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* No difference to lowlevellock.c, except we lose a couple of functions. */ +#include "lowlevellock.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c new file mode 100644 index 000000000..8c8955e05 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c @@ -0,0 +1,134 @@ +/* low level locking for pthread library. Generic futex-using version. + Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include +#include +#include + +void +__lll_lock_wait_private (int *futex) +{ + do + { + int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); + if (oldval != 0) + lll_futex_wait (futex, 2, LLL_PRIVATE); + } + while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); +} + + +/* These functions don't get included in libc.so */ +#ifdef IS_IN_libpthread +void +__lll_lock_wait (int *futex, int private) +{ + do + { + int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); + if (oldval != 0) + lll_futex_wait (futex, 2, private); + } + while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); +} + + +int +__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) +{ + struct timespec rt; + + /* Reject invalid timeouts. */ + if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) + return EINVAL; + + /* Upgrade the lock. */ + if (atomic_exchange_acq (futex, 2) == 0) + return 0; + + do + { + struct timeval tv; + + /* Get the current time. */ + (void) gettimeofday (&tv, NULL); + + /* Compute relative timeout. */ + rt.tv_sec = abstime->tv_sec - tv.tv_sec; + rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; + if (rt.tv_nsec < 0) + { + rt.tv_nsec += 1000000000; + --rt.tv_sec; + } + + /* Already timed out? */ + if (rt.tv_sec < 0) + return ETIMEDOUT; + + // XYZ: Lost the lock to check whether it was private. + lll_futex_timed_wait (futex, 2, &rt, private); + } + while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); + + return 0; +} + + +int +__lll_timedwait_tid (int *tidp, const struct timespec *abstime) +{ + int tid; + + if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) + return EINVAL; + + /* Repeat until thread terminated. */ + while ((tid = *tidp) != 0) + { + struct timeval tv; + struct timespec rt; + + /* Get the current time. */ + (void) gettimeofday (&tv, NULL); + + /* Compute relative timeout. */ + rt.tv_sec = abstime->tv_sec - tv.tv_sec; + rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; + if (rt.tv_nsec < 0) + { + rt.tv_nsec += 1000000000; + --rt.tv_sec; + } + + /* Already timed out? */ + if (rt.tv_sec < 0) + return ETIMEDOUT; + + /* Wait until thread terminates. */ + // XYZ: Lost the lock to check whether it was private. + if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) + return ETIMEDOUT; + } + + return 0; +} +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.h new file mode 100644 index 000000000..99ada5d50 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.h @@ -0,0 +1,279 @@ +/* Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _LOWLEVELLOCK_H +#define _LOWLEVELLOCK_H 1 + +#include +#include +#include +#include +#include +#include + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 +#define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) +#define FUTEX_LOCK_PI 6 +#define FUTEX_UNLOCK_PI 7 +#define FUTEX_TRYLOCK_PI 8 +#define FUTEX_WAIT_BITSET 9 +#define FUTEX_WAKE_BITSET 10 +#define FUTEX_PRIVATE_FLAG 128 +#define FUTEX_CLOCK_REALTIME 256 + +#define FUTEX_BITSET_MATCH_ANY 0xffffffff + +/* Values for 'private' parameter of locking macros. Yes, the + definition seems to be backwards. But it is not. The bit will be + reversed before passing to the system call. */ +#define LLL_PRIVATE 0 +#define LLL_SHARED FUTEX_PRIVATE_FLAG + + +#if !defined NOT_IN_libc || defined IS_IN_rtld +/* In libc.so or ld.so all futexes are private. */ +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + ((fl) | FUTEX_PRIVATE_FLAG) +# else +# define __lll_private_flag(fl, private) \ + ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) +# endif +#else +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) +# else +# define __lll_private_flag(fl, private) \ + (__builtin_constant_p (private) \ + ? ((private) == 0 \ + ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ + : (fl)) \ + : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \ + & THREAD_GETMEM (THREAD_SELF, header.private_futex)))) +# endif +#endif + + +#define lll_futex_wait(futexp, val, private) \ + lll_futex_timed_wait(futexp, val, NULL, private) + +#define lll_futex_timed_wait(futexp, val, timespec, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAIT, private), \ + (val), (timespec)); \ + __ret; \ + }) + +#define lll_futex_wake(futexp, nr, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAKE, private), \ + (nr), 0); \ + __ret; \ + }) + +#define lll_robust_dead(futexv, private) \ + do \ + { \ + int *__futexp = &(futexv); \ + atomic_or (__futexp, FUTEX_OWNER_DIED); \ + lll_futex_wake (__futexp, 1, private); \ + } \ + while (0) + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE, private),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_WAKE_OP, private), \ + (nr_wake), (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +#define lll_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 1, 0) + +#define lll_cond_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 2, 0) + +#define __lll_robust_trylock(futex, id) \ + (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0) +#define lll_robust_trylock(lock, id) \ + __lll_robust_trylock (&(lock), id) + +extern void __lll_lock_wait_private (int *futex) attribute_hidden; +extern void __lll_lock_wait (int *futex, int private) attribute_hidden; +extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden; + +#define __lll_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (unlikely(atomic_compare_and_exchange_val_acq (__futex, 1, 0))) \ + { \ + if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ + __lll_lock_wait_private (__futex); \ + else \ + __lll_lock_wait (__futex, private); \ + } \ + })) +#define lll_lock(futex, private) __lll_lock (&(futex), private) + + +#define __lll_robust_lock(futex, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \ + __val = __lll_robust_lock_wait (__futex, private); \ + __val; \ + }) +#define lll_robust_lock(futex, id, private) \ + __lll_robust_lock (&(futex), id, private) + + +#define __lll_cond_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (unlikely(atomic_exchange_acq (__futex, 2))) \ + __lll_lock_wait (__futex, private); \ + })) +#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) + + +#define lll_robust_cond_lock(futex, id, private) \ + __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private) + + +extern int __lll_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; +extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; + +#define __lll_timedlock(futex, abstime, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_exchange_acq (__futex, 1))) \ + __val = __lll_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_timedlock(futex, abstime, private) \ + __lll_timedlock (&(futex), abstime, private) + + +#define __lll_robust_timedlock(futex, abstime, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \ + __val = __lll_robust_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_robust_timedlock(futex, abstime, id, private) \ + __lll_robust_timedlock (&(futex), abstime, id, private) + + +#define __lll_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (unlikely(__oldval > 1)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_unlock(futex, private) __lll_unlock(&(futex), private) + + +#define __lll_robust_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (unlikely(__oldval & FUTEX_WAITERS)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_robust_unlock(futex, private) \ + __lll_robust_unlock(&(futex), private) + + +#define lll_islocked(futex) \ + (futex != 0) + + +/* Our internal lock implementation is identical to the binary-compatible + mutex implementation. */ + +/* Initializers for lock. */ +#define LLL_LOCK_INITIALIZER (0) +#define LLL_LOCK_INITIALIZER_LOCKED (1) + +/* The states of a lock are: + 0 - untaken + 1 - taken by one user + >1 - taken by more users */ + +/* The kernel notifies a process which uses CLONE_CLEARTID via futex + wakeup when the clone terminates. The memory location contains the + thread ID while the clone is running and is reset to zero + afterwards. */ +#define lll_wait_tid(tid) \ + do { \ + __typeof (tid) __tid; \ + while ((__tid = (tid)) != 0) \ + lll_futex_wait (&(tid), __tid, LLL_SHARED);\ + } while (0) + +extern int __lll_timedwait_tid (int *, const struct timespec *) + attribute_hidden; + +#define lll_timedwait_tid(tid, abstime) \ + ({ \ + int __res = 0; \ + if ((tid) != 0) \ + __res = __lll_timedwait_tid (&(tid), (abstime)); \ + __res; \ + }) + +#endif /* lowlevellock.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_error.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_error.c new file mode 100644 index 000000000..8f97734e5 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_error.c @@ -0,0 +1,7 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <../../../../../../../libc/sysdeps/linux/metag/__syscall_error.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_rt_sigaction.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_rt_sigaction.c new file mode 100644 index 000000000..18769cac7 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-__syscall_rt_sigaction.c @@ -0,0 +1,7 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <../../../../../../../libc/sysdeps/linux/common/__syscall_rt_sigaction.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-gettimeofday.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-gettimeofday.c new file mode 100644 index 000000000..4dcb8b564 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-gettimeofday.c @@ -0,0 +1,11 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include +#include + +int gettimeofday (struct timeval *, struct timezone *) attribute_hidden; +_syscall2(int, gettimeofday, struct timeval *, tv, struct timezone *, tz); diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S new file mode 100644 index 000000000..489c74936 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S @@ -0,0 +1,51 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +#ifdef __PIC__ +#define __VFORK_METAG_LOAD_TP ___metag_load_tp@PLT +#else +#define __VFORK_METAG_LOAD_TP ___metag_load_tp +#endif + +/* Save the PID value. */ +#define SAVE_PID \ + SETL [A0StP++], D0FrT, D1RtP; \ + CALLR D1RtP, __VFORK_METAG_LOAD_TP; \ + SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \ + GETD D0FrT, [D0Re0 + #PID]; \ + NEG D0FrT, D0FrT; \ + SETD [D0Re0 + #PID], D0FrT; \ + GETL D0FrT, D1RtP, [--A0StP]; + +#define RESTORE_PID \ + CMP D0Re0, #0; \ + BEQ 1f; \ + MSETL [A0StP++], D0Re0, D0FrT; \ + CALLR D1RtP, __VFORK_METAG_LOAD_TP; \ + SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \ + GETD D0FrT, [D0Re0 + #PID]; \ + NEG D0FrT, D0FrT; \ + SETD [D0Re0 + #PID], D0FrT; \ + GETL D0FrT, D1RtP, [--A0StP]; \ + GETL D0Re0, D1Re0, [--A0StP]; \ +1: + +#include <../../../../../../../libc/sysdeps/linux/metag/vfork.S> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pthread_once.c new file mode 100644 index 000000000..e977a7d0c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pthread_once.c @@ -0,0 +1,100 @@ +/* Copyright (C) 2004, 2005 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include "pthreadP.h" +#include + +unsigned long int __fork_generation attribute_hidden; + +static void +clear_once_control (void *arg) +{ + pthread_once_t *once_control = (pthread_once_t *) arg; + + *once_control = 0; + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); +} + +int +attribute_protected +__pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) +{ + for (;;) + { + int oldval; + int newval; + + /* Pseudo code: + newval = __fork_generation | 1; + oldval = *once_control; + if ((oldval & 2) == 0) + *once_control = newval; + Do this atomically. + */ + do + { + newval = __fork_generation | 1; + oldval = *once_control; + if (oldval & 2) + break; + } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval); + + /* Check if the initializer has already been done. */ + if ((oldval & 2) != 0) + return 0; + + /* Check if another thread already runs the initializer. */ + if ((oldval & 1) == 0) + break; + + /* Check whether the initializer execution was interrupted by a fork. */ + if (oldval != newval) + break; + + /* Same generation, some other thread was faster. Wait. */ + lll_futex_wait (once_control, oldval, LLL_PRIVATE); + } + + /* This thread is the first here. Do the initialization. + Register a cleanup handler so that in case the thread gets + interrupted the initialization can be restarted. */ + pthread_cleanup_push (clear_once_control, once_control); + + init_routine (); + + pthread_cleanup_pop (0); + + /* Say that the initialisation is done. */ + *once_control = __fork_generation | 2; + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) + +#if defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__PIC__) +/* When statically linked, if pthread_create is used, this file + will be brought in. The exception handling code in GCC assumes + that if pthread_create is available, so are these. */ +const void *include_pthread_getspecific attribute_hidden = pthread_getspecific; +const void *include_pthread_setspecific attribute_hidden = pthread_setspecific; +const void *include_pthread_key_create attribute_hidden = pthread_key_create; +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/sysdep-cancel.h new file mode 100644 index 000000000..0be330b73 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/sysdep-cancel.h @@ -0,0 +1,152 @@ +/* Copyright (C) 2003, 2004, 2005, 2009 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#ifndef __ASSEMBLER__ +# include +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +/* NOTE: We do mark syscalls with unwind annotations, for the benefit of + cancellation; but they're really only accurate at the point of the + syscall. The ARM unwind directives are not rich enough without adding + a custom personality function. */ + +#ifdef __ASSEMBLER__ +#undef ret +#define ret \ + CMP D0Re0, #-4095; \ + MOVLO PC, D1RtP; \ + MOV D1Ar1, D0Re0; \ + B SYSCALL_ERROR; +#endif /* __ASSEMBLER__ */ + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .section ".text"; \ + .type ___##syscall_name##_nocancel,%function; \ + .globl ___##syscall_name##_nocancel; \ + ___##syscall_name##_nocancel: \ + cfi_startproc; \ + DO_CALL (syscall_name, args); \ + MOV PC, D1RtP; \ + cfi_endproc; \ + .size ___##syscall_name##_nocancel,.-___##syscall_name##_nocancel; \ + .globl _##name; \ + .type _##name, @function; \ +name##: \ +_##name##: \ + DOCARGS_##args; \ + SINGLE_THREAD_P; \ + UNDOCARGS_##args; \ + BNE .Lpseudo_cancel; \ + cfi_remember_state; \ + DO_CALL (syscall_name, 0); \ + ret \ + cfi_restore_state; \ + .Lpseudo_cancel: \ + MSETL [A0StP++], D0FrT, D0.5; \ + DOCARGS_##args; /* save syscall args etc. around CENABLE. */ \ + CENABLE; \ + MOV D0FrT, D0Re0; /* put mask in safe place. */ \ + UNDOCARGS_##args; /* restore syscall args. */ \ + DO_CALL(syscall_name, 0); /* do the call. */ \ + MOV D0.5, D0Re0; /* save syscall return value. */ \ + MOV D1Ar1, D0FrT; /* get mask back. */ \ + CDISABLE; \ + MOV D0Re0, D0.5; /* retrieve return value. */ \ + GETL D0.5, D1.5, [--A0StP]; \ + GETL D0FrT, D1RtP, [--A0StP]; + +# define DOCARGS_0 +# define UNDOCARGS_0 + +# define DOCARGS_1 \ + SETL [A0StP++], D1Ar1, D0Ar2 +# define UNDOCARGS_1 \ + GETL D1Ar1, D0Ar2, [--A0StP] + +# define DOCARGS_2 DOCARGS_1 + +# define UNDOCARGS_2 UNDOCARGS_2 + +# define DOCARGS_3 \ + MSETL [A0StP++], D1Ar1, D1Ar3 + +# define UNDOCARGS_3 \ + GETL D1Ar1, D0Ar2, [--A0StP]; \ + GETL D1Ar3, D0Ar4, [--A0StP] + +# define DOCARGS_4 DOCARGS_3 +# define UNDOCARGS_4 UNDOCARGS_3 + +# define DOCARGS_5 \ + MSETL [A0StP++], D1Ar1, D1Ar3, D1Ar5 +# define UNDOCARGS_5 \ + GETL D1Ar1, D0Ar2, [--A0StP]; \ + GETL D1Ar3, D0Ar4, [--A0StP]; \ + GETL D1Ar5, D0Ar6, [--A0StP] + +# define DOCARGS_6 DOCARGS_5 +# define UNDOCARGS_6 UNDOCARGS_5 + +# ifdef IS_IN_libpthread +# define CENABLE CALLR D1RtP, ___pthread_enable_asynccancel@PLT +# define CDISABLE CALLR D1RtP, ___pthread_disable_asynccancel@PLT +# define __local_multiple_threads __pthread_multiple_threads +# elif !defined NOT_IN_libc +# define CENABLE CALLR D1RtP, ___libc_enable_asynccancel@PLT +# define CDISABLE CALLR D1RtP, ___libc_disable_asynccancel@PLT +# define __local_multiple_threads __libc_multiple_threads +# elif defined IS_IN_librt +# define CENABLE CALLR D1RtP, ___librt_enable_asynccancel@PLT +# define CDISABLE CALLR D1RtP, ___librt_disable_asynccancel@PLT +# else +# error Unsupported library +# endif + +#ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + likely(THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0) +#else +# define SINGLE_THREAD_P \ + SETL [A0StP++], D0FrT, D1RtP; \ + CALLR D1RtP, ___metag_load_tp@PLT; \ + SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \ + GETD D0Re0, [D0Re0 + #MULTIPLE_THREADS_OFFSET]; \ + CMP D0Re0, #0; \ + GETL D0FrT, D1RtP, [--A0StP] +#endif + + +#elif !defined __ASSEMBLER__ + +/* For rtld, et cetera. */ +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + likely(THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0) +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S new file mode 100644 index 000000000..51fcfbbe4 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S @@ -0,0 +1,56 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +#ifdef __PIC__ +#define __VFORK_METAG_LOAD_TP ___metag_load_tp@PLT +#else +#define __VFORK_METAG_LOAD_TP ___metag_load_tp +#endif + +/* Save the PID value. */ +#define SAVE_PID \ + SETL [A0StP++], D0FrT, D1RtP; \ + CALLR D1RtP, __VFORK_METAG_LOAD_TP; \ + SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \ + GETD D0FrT, [D0Re0 + #PID]; \ + NEGS D0FrT, D0FrT; \ + BNZ 1f; \ + MOVT D0FrT, #0x8000; \ +1: SETD [D0Re0 + #PID], D0FrT; \ + GETL D0FrT, D1RtP, [--A0StP]; + +#define RESTORE_PID \ + CMP D0Re0, #0; \ + BEQ 1f; \ + MSETL [A0StP++], D0Re0, D0FrT; \ + CALLR D1RtP, __VFORK_METAG_LOAD_TP; \ + SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \ + GETD D0FrT, [D0Re0 + #PID]; \ + NEG D0FrT, D0FrT; \ + MOVT D1Re0, #0x8000; \ + CMP D0FrT, D1Re0; \ + XOREQ D0FrT, D0FrT, D0FrT; \ + SETD [D0Re0 + #PID], D0FrT; \ + GETL D0FrT, D1RtP, [--A0StP]; \ + GETL D0Re0, D1Re0, [--A0StP]; \ +1: + +#include <../../../../../../../libc/sysdeps/linux/metag/vfork.S> -- cgit v1.2.3