diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 19 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/elf/pt-initfini.c | 93 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/pthread_spin_lock.S | 45 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/pthread_spin_trylock.S | 46 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/pthreaddef.h | 38 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/td_ta_map_lwp2thr.c | 46 | ||||
| -rw-r--r-- | nptl/sysdeps/alpha/tls.h | 146 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/Makefile | 2 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h | 155 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h | 37 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/createthread.c | 24 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/fork.c | 30 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h | 218 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S | 25 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c | 96 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/sem_post.c | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h | 157 |
17 files changed, 1182 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 509f23a58b..4a976c4555 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,22 @@ +2003-07-01 Richard Henderson <rth@redhat.com> + + * sysdeps/alpha/elf/pt-initfini.c: New file. + * sysdeps/alpha/pthread_spin_lock.S: New file. + * sysdeps/alpha/pthread_spin_trylock.S: New file. + * sysdeps/alpha/pthreaddef.h: New file. + * sysdeps/alpha/td_ta_map_lwp2thr.c: New file. + * sysdeps/alpha/tls.h: New file. + * sysdeps/unix/sysv/linux/alpha/Makefile: New file. + * sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h: New file. + * sysdeps/unix/sysv/linux/alpha/bits/semaphore.h: New file. + * sysdeps/unix/sysv/linux/alpha/createthread.c: New file. + * sysdeps/unix/sysv/linux/alpha/fork.c: New file. + * sysdeps/unix/sysv/linux/alpha/lowlevellock.h: New file. + * sysdeps/unix/sysv/linux/alpha/pt-vfork.S: New file. + * sysdeps/unix/sysv/linux/alpha/pthread_once.c: New file. + * sysdeps/unix/sysv/linux/alpha/sem_post.c: New file. + * sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: New file. + 2003-07-01 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Add correct diff --git a/nptl/sysdeps/alpha/elf/pt-initfini.c b/nptl/sysdeps/alpha/elf/pt-initfini.c new file mode 100644 index 0000000000..d48c571b7c --- /dev/null +++ b/nptl/sysdeps/alpha/elf/pt-initfini.c @@ -0,0 +1,93 @@ +/* Special .init and .fini section support for Alpha. NPTL version. + Copyright (C) 2003 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. */ + +/* This file is compiled into assembly code which is then munged by a sed + script into two files: crti.s and crtn.s. + + * crti.s puts a function prologue at the beginning of the .init and .fini + sections and defines global symbols for those addresses, so they can be + called as functions. + + * crtn.s puts the corresponding function epilogues in the .init and .fini + sections. + + This differs from what would be generated by the generic code in that + we save and restore the GP within the function. In order for linker + relaxation to work, the value in the GP register on exit from a function + must be valid for the function entry point. Normally, a function is + contained within one object file and this is not an issue, provided + that the function reloads the gp after making any function calls. + However, _init and _fini are constructed from pieces of many object + files, all of which may have different GP values. So we must reload + the GP value from crti.o in crtn.o. */ + +__asm__ (" \n\ +#include \"defs.h\" \n\ + \n\ +/*@HEADER_ENDS*/ \n\ + \n\ +/*@_init_PROLOG_BEGINS*/ \n\ + .section .init, \"ax\", @progbits \n\ + .globl _init \n\ + .ent _init \n\ +_init: \n\ + ldgp $29, 0($27) \n\ + subq $30, 16, $30 \n\ + stq $26, 0($30) \n\ + stq $29, 8($30) \n\ + .prologue 1 \n\ + bsr $26, __pthread_initialize_minimal_internal !samegp \n\ + .align 3 \n\ + .end _init \n\ + .size _init, 0 \n\ +/*@_init_PROLOG_ENDS*/ \n\ + \n\ +/*@_init_EPILOG_BEGINS*/ \n\ + .section .init, \"ax\", @progbits \n\ + ldq $26, 0($30) \n\ + ldq $29, 8($30) \n\ + addq $30, 16, $30 \n\ + ret \n\ +/*@_init_EPILOG_ENDS*/ \n\ + \n\ +/*@_fini_PROLOG_BEGINS*/ \n\ + .section .fini, \"ax\", @progbits \n\ + .globl _fini \n\ + .ent _fini \n\ +_fini: \n\ + ldgp $29, 0($27) \n\ + subq $30, 16, $30 \n\ + stq $26, 0($30) \n\ + stq $29, 8($30) \n\ + .prologue 1 \n\ + .align 3 \n\ + .end _fini \n\ + .size _fini, 0 \n\ +/*@_fini_PROLOG_ENDS*/ \n\ + \n\ +/*@_fini_EPILOG_BEGINS*/ \n\ + .section .fini, \"ax\", @progbits \n\ + ldq $26, 0($30) \n\ + ldq $29, 8($30) \n\ + addq $30, 16, $30 \n\ + ret \n\ +/*@_fini_EPILOG_ENDS*/ \n\ + \n\ +/*@TRAILER_BEGINS*/ \n\ +"); diff --git a/nptl/sysdeps/alpha/pthread_spin_lock.S b/nptl/sysdeps/alpha/pthread_spin_lock.S new file mode 100644 index 0000000000..ce6cd41a42 --- /dev/null +++ b/nptl/sysdeps/alpha/pthread_spin_lock.S @@ -0,0 +1,45 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@twiddle.net>, 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. */ + + + .text + .align 4 + + .globl pthread_spin_lock + .ent pthread_spin_lock +pthread_spin_lock: + .frame $sp, 0, $26, 0 + .prologue 0 + +0: ldl_l $1, 0($16) + lda $2, 1 + lda $0, 0 + bne $1, 1f + + stl_c $2, 0($16) + beq $2, 1f + mb + ret + +1: ldl $1, 0($16) + bne $1, 1b + unop + br 0b + + .end pthread_spin_lock diff --git a/nptl/sysdeps/alpha/pthread_spin_trylock.S b/nptl/sysdeps/alpha/pthread_spin_trylock.S new file mode 100644 index 0000000000..0948da698b --- /dev/null +++ b/nptl/sysdeps/alpha/pthread_spin_trylock.S @@ -0,0 +1,46 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@twiddle.net>, 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. */ + + +#define _ERRNO_H 1 +#include <bits/errno.h> + + .text + .align 4 + + .globl pthread_spin_trylock + .ent pthread_spin_trylock +pthread_spin_trylock: + .frame $sp, 0, $26, 0 + .prologue 0 + +0: ldl_l $1, 0($16) + lda $2, 1 + lda $0, EBUSY + bne $1, 1f + + stl_c $2, 0($16) + beq $2, 2f + mb + lda $0, 0 + +1: ret +2: br 0b + + .end pthread_spin_trylock diff --git a/nptl/sysdeps/alpha/pthreaddef.h b/nptl/sysdeps/alpha/pthreaddef.h new file mode 100644 index 0000000000..26c4daf7b3 --- /dev/null +++ b/nptl/sysdeps/alpha/pthreaddef.h @@ -0,0 +1,38 @@ +/* Copyright (C) 2003 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. */ + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (4 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. The ABI requires 16. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 4096 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + +/* XXX Until we have a better place keep the definitions here. */ + +/* While there is no such syscall. */ +#define __exit_thread_inline(val) \ + INLINE_SYSCALL (exit, 1, (val)) diff --git a/nptl/sysdeps/alpha/td_ta_map_lwp2thr.c b/nptl/sysdeps/alpha/td_ta_map_lwp2thr.c new file mode 100644 index 0000000000..b30b10b123 --- /dev/null +++ b/nptl/sysdeps/alpha/td_ta_map_lwp2thr.c @@ -0,0 +1,46 @@ +/* Which thread is running on an LWP? PowerPC version. + Copyright (C) 2003 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 "thread_dbP.h" +#include <tls.h> + + +td_err_e +td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th) +{ + LOG ("td_ta_map_lwp2thr"); + + /* Test whether the TA parameter is ok. */ + if (! ta_ok (ta)) + return TD_BADTA; + + prgregset_t regs; + if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK) + return TD_ERR; + + /* The uniq value is stored in slot 33 in recent gdb; it isn't stored + anywhere otherwise. */ + th->th_unique = ((void *) regs[32] + - TLS_TCB_OFFSET - TLS_TCB_SIZE - TLS_PRE_TCB_SIZE); + + /* Found it. Now complete the `td_thrhandle_t' object. */ + th->th_ta_p = (td_thragent_t *) ta; + + return TD_OK; +} diff --git a/nptl/sysdeps/alpha/tls.h b/nptl/sysdeps/alpha/tls.h new file mode 100644 index 0000000000..1718b3e466 --- /dev/null +++ b/nptl/sysdeps/alpha/tls.h @@ -0,0 +1,146 @@ +/* Definition for thread-local data handling. NPTL/Alpha version. + Copyright (C) 2003 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 _TLS_H +#define _TLS_H 1 + +# include <dl-sysdep.h> + +#ifndef __ASSEMBLER__ +# include <stddef.h> +# include <stdint.h> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + void *pointer; +} dtv_t; + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif /* __ASSEMBLER__ */ + + +/* We require TLS support in the tools. */ +#ifndef HAVE_TLS_SUPPORT +# error "TLS support is required." +#endif + +/* Signal that TLS support is available. */ +# define USE_TLS 1 + +#ifndef __ASSEMBLER__ + +/* Get system call information. */ +# include <sysdep.h> + +/* The TP points to the start of the thread blocks. */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <nptl/descr.h> + +/* This layout is actually wholly private and not affected by the ABI. + Nor does it overlap the pthread data structure, so we need nothing + extra here at all. */ +typedef struct +{ + dtv_t *dtv; +} tcbhead_t; + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE 0 + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE 0 + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE \ + (sizeof (struct pthread) \ + + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1))) + +/* The following assumes that TP (R2 or R13) points to the end of the + TCB + 0x7000 (per the ABI). This implies that TCB address is + TP - 0x7000. As we define TLS_DTV_AT_TP we can + assume that the pthread struct is allocated immediately ahead of the + TCB. This implies that the pthread_descr address is + TP - (TLS_PRE_TCB_SIZE + 0x7000). */ +/* ??? PPC uses offset 0x7000; seems like a good idea for alpha too, + but binutils not yet changed to match. */ +# define TLS_TCB_OFFSET 0 + +/* Install the dtv pointer. The pointer passed is to the element with + index -1 which contain the length. */ +# define INSTALL_DTV(tcbp, dtvp) \ + ((tcbhead_t *) (tcbp))[-1].dtv = dtvp + 1 + +/* Install new dtv for current thread. */ +# define INSTALL_NEW_DTV(dtv) (THREAD_DTV() = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) (((tcbhead_t *) (tcbp))[-1].dtv) + +/* Code to initially initialize the thread pointer. This might need + special attention since 'errno' is not yet available and if the + operation can cause a failure 'errno' must not be touched. */ +# define TLS_INIT_TP(tcbp, secondcall) \ + (__builtin_set_thread_pointer ((void *) (tcbp) + TLS_TCB_OFFSET), NULL) + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) (__builtin_thread_pointer () - TLS_TCB_OFFSET))[-1].dtv) + +/* Return the thread descriptor for the current thread. */ +# define THREAD_SELF \ + ((struct pthread *) (__builtin_thread_pointer () \ + - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) + +/* Identifier for the current thread. THREAD_SELF is usable but + sometimes more expensive than necessary as in this case. */ +# define THREAD_ID (__builtin_thread_pointer ()) + +/* Read member of the thread descriptor directly. */ +# define THREAD_GETMEM(descr, member) ((void)(descr), (THREAD_SELF)->member) + +/* Same as THREAD_GETMEM, but the member offset can be non-constant. */ +# define THREAD_GETMEM_NC(descr, member, idx) \ + ((void)(descr), (THREAD_SELF)->member[idx]) + +/* Set member of the thread descriptor directly. */ +# define THREAD_SETMEM(descr, member, value) \ + ((void)(descr), (THREAD_SELF)->member = (value)) + +/* Same as THREAD_SETMEM, but the member offset can be non-constant. */ +# define THREAD_SETMEM_NC(descr, member, idx, value) \ + ((void)(descr), (THREAD_SELF)->member[idx] = (value)) + +/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some + different value to mean unset l_tls_offset. */ +# define NO_TLS_OFFSET -1 + +#endif /* __ASSEMBLER__ */ + +#endif /* tls.h */ diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/Makefile b/nptl/sysdeps/unix/sysv/linux/alpha/Makefile new file mode 100644 index 0000000000..8c80840798 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/Makefile @@ -0,0 +1,2 @@ +# pull in __syscall_error routine, __sigprocmask, __syscall_rt_sigaction +libpthread-routines += ptw-sysdep ptw-sigprocmask ptw-rt_sigaction diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h b/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h new file mode 100644 index 0000000000..bd5ab9706c --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h @@ -0,0 +1,155 @@ +/* Machine-specific pthread type layouts. Alpha version. + Copyright (C) 2003 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 + +#define __SIZEOF_PTHREAD_ATTR_T 56 +#define __SIZEOF_PTHREAD_MUTEX_T 40 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCK_T 56 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +#define __SIZEOF_PTHREAD_BARRIER_T 32 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + + +/* Thread identifiers. The structure of the attribute type is + deliberately not exposed. */ +typedef struct __opaque_pthread *pthread_t; + + +typedef union +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +} pthread_attr_t; + + +/* Data structures for mutex handling. The structure of the attribute + type is deliberately not exposed. */ +typedef union +{ + struct + { + int __lock; + unsigned int __count; + int __owner; + unsigned int __nusers; + /* KIND must stay at this position in the structure to maintain + binary compatibility. */ + int __kind; + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_MUTEXATTR_T]; + int __align; +} pthread_mutexattr_t; + + +/* Data structure for conditional variable handling. The structure of + the attribute type is deliberately not exposed. */ +typedef union +{ + struct + { + int __lock; + int __clock; + unsigned long long int __total_seq; + unsigned long long int __wakeup_seq; + unsigned long long int __woken_seq; + void *__mutex; + } __data; + char __size[__SIZEOF_PTHREAD_COND_T]; + long long int __align; +} pthread_cond_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_CONDATTR_T]; + int __align; +} pthread_condattr_t; + + +/* Keys for thread-specific data */ +typedef unsigned int pthread_key_t; + + +/* Once-only execution */ +typedef int pthread_once_t; + + +#ifdef __USE_UNIX98 +/* Data structure for read-write lock variable handling. The + structure of the attribute type is deliberately not exposed. */ +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; + int __writer; + + unsigned int __reserved[6]; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned int __flags; + } __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/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h b/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h new file mode 100644 index 0000000000..65298fae48 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h @@ -0,0 +1,37 @@ +/* Machine-specific POSIX semaphore type layouts. Alpha version. + Copyright (C) 2003 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 <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + +# define __SIZEOF_SEM_T 32 + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + +/* Maximum value the semaphore can have. */ +#define SEM_VALUE_MAX ((int) ((~0u) >> 1)) + + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/createthread.c b/nptl/sysdeps/unix/sysv/linux/alpha/createthread.c new file mode 100644 index 0000000000..b29c57b52a --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/createthread.c @@ -0,0 +1,24 @@ +/* Copyright (C) 2003 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 ((void *) (pd) \ + + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE) + +/* Get the real implementation. */ +#include <nptl/sysdeps/pthread/createthread.c> diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/fork.c b/nptl/sysdeps/unix/sysv/linux/alpha/fork.c new file mode 100644 index 0000000000..ca85fc008f --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/fork.c @@ -0,0 +1,30 @@ +/* Copyright (C) 2003 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 <sched.h> +#include <signal.h> +#include <sysdep.h> +#include <tls.h> + + +#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/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h new file mode 100644 index 0000000000..e286ef36cb --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h @@ -0,0 +1,218 @@ +/* Copyright (C) 2003 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 Libr \ary; 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 <time.h> +#include <sys/param.h> +#include <bits/pthreadtypes.h> +#include <atomic.h> + + +#define __NR_futex 394 +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 + +/* Initializer for compatibility lock. */ +#define LLL_MUTEX_LOCK_INITIALIZER (0) + +#define lll_futex_wait(futexp, val) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, \ + (futexp), FUTEX_WAIT, (val), 0); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + }) + +#define lll_futex_timed_wait(futexp, val, timespec) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, \ + (futexp), FUTEX_WAIT, (val), (timespec)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + }) + +#define lll_futex_wake(futexp, nr) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, \ + (futexp), FUTEX_WAKE, (nr), 0); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + }) + +#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 5, \ + (futexp), FUTEX_REQUEUE, (nr_wake), (nr_move), \ + (mutex)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + }) + +/* Set *futex to 1 if it is 0, atomically. Returns the old value */ +#define __lll_trylock(futex) \ + ({ int __oldval, __temp; \ + __asm __volatile ( \ + "1: ldl_l %[__oldval], %[__mem]\n" \ + " lda %[__temp], 1\n" \ + " bne %[__oldval], 2f\n" \ + " stl_c %[__temp], %[__mem]\n" \ + " beq %[__temp], 1b\n" \ + __MB \ + "2:" \ + : [__oldval] "=&r" (__oldval), \ + [__temp] "=&r" (__temp) \ + : [__mem] "m" (*(futex)) \ + : "memory"); \ + __oldval; \ + }) + +#define lll_mutex_trylock(lock) __lll_trylock (&(lock)) + + +extern void __lll_lock_wait (int *futex, int val) attribute_hidden; + +#define lll_mutex_lock(lock) \ + (void) ({ \ + int *__futex = &(lock); \ + int __val = atomic_exchange_and_add (__futex, 1); \ + atomic_full_barrier(); \ + if (__builtin_expect (__val != 0, 0)) \ + __lll_lock_wait (__futex, __val); \ + }) + +#define lll_mutex_cond_lock(lock) \ + (void) ({ \ + int *__futex = &(lock); \ + int __val = atomic_exchange_and_add (__futex, 2); \ + atomic_full_barrier(); \ + if (__builtin_expect (__val != 0, 0)) \ + /* Note, the val + 1 is kind of ugly here. __lll_lock_wait will \ + add 1 again. But we added 2 to the futex value so this is the \ + right value which will be passed to the kernel. */ \ + __lll_lock_wait (__futex, __val + 1); \ + }) + +extern int __lll_timedlock_wait + (int *futex, int val, const struct timespec *) attribute_hidden; + +#define lll_mutex_timedlock(lock, abstime) \ + ({ int *__futex = &(lock); \ + int __val = atomic_exchange_and_add (__futex, 1); \ + atomic_full_barrier(); \ + if (__builtin_expect (__val != 0, 0)) \ + __val = __lll_timedlock_wait (__futex, __val, (abstime)); \ + __val; \ + }) + +#define lll_mutex_unlock(lock) \ + ((void) ({ \ + int *__futex = &(lock), __val; \ + atomic_write_barrier(); \ + __val = atomic_exchange_rel (__futex, 0); \ + if (__builtin_expect (__val > 1, 0)) \ + lll_futex_wake (__futex, 1); \ + })) + +#define lll_mutex_unlock_force(lock) \ + ((void) ({ \ + int *__futex = &(lock); \ + atomic_write_barrier(); \ + *__futex = 0; \ + atomic_full_barrier(); \ + lll_futex_wake (__futex, 1); \ + })) + +#define lll_mutex_islocked(futex) \ + (futex != 0) + + +/* Our internal lock implementation is identical to the binary-compatible + mutex implementation. */ + +/* Type for lock object. */ +typedef int lll_lock_t; + +/* Initializers for lock. */ +#define LLL_LOCK_INITIALIZER (0) +#define LLL_LOCK_INITIALIZER_LOCKED (1) + +extern int lll_unlock_wake_cb (int *__futex) attribute_hidden; + +/* The states of a lock are: + 0 - untaken + 1 - taken by one user + >1 - taken by more users */ + +#define lll_trylock(lock) lll_mutex_trylock (lock) +#define lll_lock(lock) lll_mutex_lock (lock) +#define lll_unlock(lock) lll_mutex_unlock (lock) +#define lll_islocked(lock) lll_mutex_islocked (lock) + +/* 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); \ + } 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; \ + }) + + +/* Conditional variable handling. */ + +extern void __lll_cond_wait (pthread_cond_t *cond) + attribute_hidden; +extern int __lll_cond_timedwait (pthread_cond_t *cond, + const struct timespec *abstime) + attribute_hidden; +extern void __lll_cond_wake (pthread_cond_t *cond) + attribute_hidden; +extern void __lll_cond_broadcast (pthread_cond_t *cond) + attribute_hidden; + +#define lll_cond_wait(cond) \ + __lll_cond_wait (cond) +#define lll_cond_timedwait(cond, abstime) \ + __lll_cond_timedwait (cond, abstime) +#define lll_cond_wake(cond) \ + __lll_cond_wake (cond) +#define lll_cond_broadcast(cond) \ + __lll_cond_broadcast (cond) + +#endif /* lowlevellock.h */ diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S b/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S new file mode 100644 index 0000000000..4a2df4255b --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/pt-vfork.S @@ -0,0 +1,25 @@ +/* Copyright (C) 2003 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 <sysdep-cancel.h> + +PSEUDO(__vfork, vfork, 0) + ret +PSEUDO_END (__vfork) + +weak_alias (__vfork, vfork) diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c b/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c new file mode 100644 index 0000000000..82f72de8b3 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c @@ -0,0 +1,96 @@ +/* Copyright (C) 2003 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 <lowlevellock.h> + + +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); +} + +int +__pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) +{ + for (;;) + { + int oldval; + int newval; + int tmp; + + /* Pseudo code: + newval = __fork_generation | 1; + oldval = *once_control; + if ((oldval & 2) == 0) + *once_control = newval; + Do this atomically. + */ + newval = __fork_generation | 1; + __asm __volatile ( + "1: ldl_l %0, %2\n" + " and %0, 2, %1\n" + " bne %1, 2f\n" + " mov %3, %1\n" + " stl_c %1, %2\n" + " beq %1, 1b\n" + "2: mb" + : "=&r" (oldval), "=&r" (tmp), "=m" (*once_control) + : "r" (newval), "m" (*once_control)); + + /* 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); + } + + /* 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); + + /* Add one to *once_control to take the bottom 2 bits from 01 to 10. */ + atomic_exchange_and_add (once_control, 1); + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX); + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/sem_post.c b/nptl/sysdeps/unix/sysv/linux/alpha/sem_post.c new file mode 100644 index 0000000000..27fd817e65 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/sem_post.c @@ -0,0 +1,5 @@ +/* ??? This is an ass-backwards way to do this. We should simply define + the acquire/release semantics of atomic_exchange_and_add. And even if + we don't do this, we should be using atomic_full_barrier or otherwise. */ +#define __lll_rel_instr "mb" +#include "../sem_post.c" diff --git a/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h new file mode 100644 index 0000000000..1b27e27db0 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h @@ -0,0 +1,157 @@ +/* Copyright (C) 2003 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 <sysdep.h> +#include <tls.h> +#ifndef __ASSEMBLER__ +# include <nptl/pthreadP.h> +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +# ifdef PROF +# define PSEUDO_PROF \ + .set noat; \ + lda AT, _mcount; \ + jsr AT, (AT), _mcount; \ + .set at +# else +# define PSEUDO_PROF +# endif + +/* ??? Assumes that nothing comes between PSEUDO and PSEUDO_END + besides "ret". */ + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .globl name; \ + .align 4; \ + .type name, @function; \ + .usepv name, std; \ + cfi_startproc; \ +__LABEL(name) \ + ldgp gp, 0(pv); \ + PSEUDO_PROF; \ + PSEUDO_PREPARE_ARGS \ + SINGLE_THREAD_P(t0); \ + bne t0, $pseudo_cancel; \ + lda v0, SYS_ify(syscall_name); \ + call_pal PAL_callsys; \ + bne a3, SYSCALL_ERROR_LABEL; \ +__LABEL($pseudo_ret) \ + .subsection 2; \ +__LABEL($pseudo_cancel) \ + subq sp, 64, sp; \ + cfi_def_cfa_offset(64); \ + stq ra, 0(sp); \ + cfi_offset(ra, -64); \ + SAVE_ARGS_##args; \ + CENABLE; \ + LOAD_ARGS_##args; \ + lda v0, SYS_ify(syscall_name); \ + call_pal PAL_callsys; \ + stq v0, 8(sp); \ + bne a3, $multi_error; \ + CDISABLE; \ + ldq ra, 0(sp); \ + ldq v0, 8(sp); \ + addq sp, 64, sp; \ + cfi_remember_state; \ + cfi_restore(ra); \ + cfi_def_cfa_offset(0); \ + ret; \ + cfi_restore_state; \ +__LABEL($multi_error) \ + CDISABLE; \ + ldq ra, 0(sp); \ + ldq v0, 8(sp); \ + addq sp, 64, sp; \ + cfi_restore(ra); \ + cfi_def_cfa_offset(0); \ +__LABEL($syscall_error) \ + SYSCALL_ERROR_HANDLER; \ + .previous + +# undef PSEUDO_END +# define PSEUDO_END(sym) \ + .subsection 2; \ + cfi_endproc; \ + .size sym, .-sym + +# define SAVE_ARGS_0 /* Nothing. */ +# define SAVE_ARGS_1 SAVE_ARGS_0; stq a0, 8(sp) +# define SAVE_ARGS_2 SAVE_ARGS_1; stq a1, 16(sp) +# define SAVE_ARGS_3 SAVE_ARGS_2; stq a2, 24(sp) +# define SAVE_ARGS_4 SAVE_ARGS_3; stq a3, 32(sp) +# define SAVE_ARGS_5 SAVE_ARGS_4; stq a4, 40(sp) +# define SAVE_ARGS_6 SAVE_ARGS_5; stq a5, 48(sp) + +# define LOAD_ARGS_0 /* Nothing. */ +# define LOAD_ARGS_1 LOAD_ARGS_0; ldq a0, 8(sp) +# define LOAD_ARGS_2 LOAD_ARGS_1; ldq a1, 16(sp) +# define LOAD_ARGS_3 LOAD_ARGS_2; ldq a2, 24(sp) +# define LOAD_ARGS_4 LOAD_ARGS_3; ldq a3, 32(sp) +# define LOAD_ARGS_5 LOAD_ARGS_4; ldq a4, 40(sp) +# define LOAD_ARGS_6 LOAD_ARGS_5; ldq a5, 48(sp) + +# ifdef IS_IN_libpthread +# define __local_enable_asynccancel __pthread_enable_asynccancel +# define __local_disable_asynccancel __pthread_disable_asynccancel +# define __local_multiple_threads __pthread_multiple_threads +# elif !defined NOT_IN_libc +# define __local_enable_asynccancel __libc_enable_asynccancel +# define __local_disable_asynccancel __libc_disable_asynccancel +# define __local_multiple_threads __libc_multiple_threads +# elif defined IS_IN_librt +# define __local_enable_asynccancel __librt_enable_asynccancel +# define __local_disable_asynccancel __librt_disable_asynccancel +# else +# error Unsupported library +# endif + +# ifdef PIC +# define CENABLE bsr ra, __local_enable_asynccancel !samegp +# define CDISABLE bsr ra, __local_disable_asynccancel !samegp +# else +# define CENABLE jsr ra, __local_enable_asynccancel; ldgp ra, 0(gp) +# define CDISABLE jsr ra, __local_disable_asynccancel; ldgp ra, 0(gp) +# endif + +# if defined IS_IN_libpthread || !defined NOT_IN_libc +# ifndef __ASSEMBLER__ +extern int __local_multiple_threads attribute_hidden; +# define SINGLE_THREAD_P \ + __builtin_expect (__local_multiple_threads == 0, 1) +# elif defined(PIC) +# define SINGLE_THREAD_P(reg) ldl reg, __local_multiple_threads(gp) !gprel +# else +# define SINGLE_THREAD_P(reg) \ + ldah reg, __local_multiple_threads(gp) !gprelhigh; \ + ldl reg, __local_multiple_threads(reg) !gprellow +# endif +# else +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# else +# error Not done +# endif +# endif + +#endif |