From cccc549ced940c85039c8ce263c8bb571f244afd Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 31 Jan 2006 05:05:15 +0000 Subject: initial import of latest linuxthreads --- .../linuxthreads/sysdeps/powerpc/CVS/Entries | 5 + .../linuxthreads/sysdeps/powerpc/CVS/Entries.Log | 2 + .../linuxthreads/sysdeps/powerpc/CVS/Repository | 1 + libpthread/linuxthreads/sysdeps/powerpc/CVS/Root | 1 + .../sysdeps/powerpc/powerpc32/CVS/Entries | 3 + .../sysdeps/powerpc/powerpc32/CVS/Repository | 1 + .../sysdeps/powerpc/powerpc32/CVS/Root | 1 + .../sysdeps/powerpc/powerpc32/pspinlock.c | 70 ++++++++ .../sysdeps/powerpc/powerpc32/pt-machine.h | 120 +++++++++++++ .../sysdeps/powerpc/powerpc64/CVS/Entries | 3 + .../sysdeps/powerpc/powerpc64/CVS/Repository | 1 + .../sysdeps/powerpc/powerpc64/CVS/Root | 1 + .../sysdeps/powerpc/powerpc64/pspinlock.c | 70 ++++++++ .../sysdeps/powerpc/powerpc64/pt-machine.h | 185 +++++++++++++++++++++ .../linuxthreads/sysdeps/powerpc/pspinlock.c | 8 + .../linuxthreads/sysdeps/powerpc/pt-machine.h | 8 + .../linuxthreads/sysdeps/powerpc/tcb-offsets.sym | 19 +++ libpthread/linuxthreads/sysdeps/powerpc/tls.h | 165 ++++++++++++++++++ 18 files changed, 664 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries.Log create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/CVS/Repository create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/CVS/Root create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Entries create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Repository create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Root create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pspinlock.c create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Entries create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Repository create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Root create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/pspinlock.c create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/tcb-offsets.sym create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/tls.h (limited to 'libpthread/linuxthreads/sysdeps/powerpc') diff --git a/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries new file mode 100644 index 000000000..bd6c75d7e --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries @@ -0,0 +1,5 @@ +D/powerpc32//// +D/powerpc64//// +/Makefile/1.2/Tue Nov 15 14:20:47 2005// +/tcb-offsets.sym/1.8/Tue Nov 15 14:20:47 2005// +/tls.h/1.9/Tue Nov 15 14:20:47 2005// diff --git a/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries.Log b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries.Log new file mode 100644 index 000000000..bc1536e2e --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Entries.Log @@ -0,0 +1,2 @@ +A D/bits//// +R D/bits//// diff --git a/libpthread/linuxthreads/sysdeps/powerpc/CVS/Repository b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Repository new file mode 100644 index 000000000..f49a0de0c --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Repository @@ -0,0 +1 @@ +ports/linuxthreads/sysdeps/powerpc diff --git a/libpthread/linuxthreads/sysdeps/powerpc/CVS/Root b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Root new file mode 100644 index 000000000..ca45c5d4d --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/CVS/Root @@ -0,0 +1 @@ +:pserver:anoncvs@sources.redhat.com:/cvs/glibc diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Entries b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Entries new file mode 100644 index 000000000..eb3fa724c --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Entries @@ -0,0 +1,3 @@ +/pspinlock.c/1.1/Tue Nov 15 14:20:47 2005// +/pt-machine.h/1.3/Tue Nov 15 14:20:47 2005// +D diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Repository b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Repository new file mode 100644 index 000000000..04a3b2b13 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Repository @@ -0,0 +1 @@ +ports/linuxthreads/sysdeps/powerpc/powerpc32 diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Root b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Root new file mode 100644 index 000000000..ca45c5d4d --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/CVS/Root @@ -0,0 +1 @@ +:pserver:anoncvs@sources.redhat.com:/cvs/glibc diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pspinlock.c b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pspinlock.c new file mode 100644 index 000000000..15fd545c1 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pspinlock.c @@ -0,0 +1,70 @@ +/* POSIX spinlock implementation. PowerPC version. + Copyright (C) 2000, 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; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include "internals.h" + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + while (! __compare_and_swap ((long int *)lock, 0, 1)) + ; + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return __compare_and_swap ((long int *)lock, 0, 1) ? 0 : EBUSY; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + MEMORY_BARRIER (); + *lock = 0; + return 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + *lock = 0; + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pt-machine.h b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pt-machine.h new file mode 100644 index 000000000..8363d16d0 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc32/pt-machine.h @@ -0,0 +1,120 @@ +/* Machine-dependent pthreads configuration and inline functions. + powerpc version. + Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002, 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; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* These routines are from Appendix G of the 'PowerPC 601 RISC Microprocessor + User's Manual', by IBM and Motorola. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline __attribute__ ((always_inline)) +#endif + +extern long int testandset (int *spinlock); +extern int __compare_and_swap (long int *p, long int oldval, long int newval); + +/* For multiprocessor systems, we want to ensure all memory accesses + are completed before we reset a lock. On other systems, we still + need to make sure that the compiler has flushed everything to memory. */ +#define MEMORY_BARRIER() __asm__ __volatile__ ("sync" : : : "memory") + +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 8*1024*1024 + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("r1"); + +/* Register r2 (tp) is reserved by the ABI as "thread pointer". */ +struct _pthread_descr_struct; +register struct _pthread_descr_struct *__thread_self __asm__("r2"); + +/* Return the thread descriptor for the current thread. */ +#define THREAD_SELF __thread_self + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr)) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + ((void) (descr), THREAD_SELF->member) +#define THREAD_GETMEM_NC(descr, member) \ + ((void) (descr), THREAD_SELF->member) +#define THREAD_SETMEM(descr, member, value) \ + ((void) (descr), THREAD_SELF->member = (value)) +#define THREAD_SETMEM_NC(descr, member, value) \ + ((void) (descr), THREAD_SELF->member = (value)) + +/* Compare-and-swap for semaphores. */ +/* note that test-and-set(x) is the same as !compare-and-swap(x, 0, 1) */ + +#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS +#define IMPLEMENT_TAS_WITH_CAS + +PT_EI int +__compare_and_swap (long int *p, long int oldval, long int newval) +{ + int ret; + + __asm__ __volatile__ ( + "0: lwarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + /* This version of __compare_and_swap is to be used when acquiring + a lock, so we don't need to worry about whether other memory + operations have completed, but we do need to be sure that any loads + after this point really occur after we have acquired the lock. */ + __asm__ __volatile__ ("isync" : : : "memory"); + return ret == 0; +} + +PT_EI int +__compare_and_swap_with_release_semantics (long int *p, + long int oldval, long int newval) +{ + int ret; + + MEMORY_BARRIER (); + __asm__ __volatile__ ( + "0: lwarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + return ret == 0; +} + +#endif /* pt-machine.h */ diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Entries b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Entries new file mode 100644 index 000000000..bfac31bb1 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Entries @@ -0,0 +1,3 @@ +/pspinlock.c/1.1/Tue Nov 15 14:20:47 2005// +/pt-machine.h/1.5/Tue Nov 15 14:20:47 2005// +D diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Repository b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Repository new file mode 100644 index 000000000..37d5b8c8c --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Repository @@ -0,0 +1 @@ +ports/linuxthreads/sysdeps/powerpc/powerpc64 diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Root b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Root new file mode 100644 index 000000000..ca45c5d4d --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/CVS/Root @@ -0,0 +1 @@ +:pserver:anoncvs@sources.redhat.com:/cvs/glibc diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c new file mode 100644 index 000000000..19161c6e1 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c @@ -0,0 +1,70 @@ +/* POSIX spinlock implementation. PowerPC version. + Copyright (C) 2000, 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; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include "internals.h" + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + while (! __compare_and_swap32 ((int *)lock, 0, 1)) + ; + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return __compare_and_swap32 ((int *)lock, 0, 1) ? 0 : EBUSY; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + MEMORY_BARRIER (); + *lock = 0; + return 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + *lock = 0; + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h new file mode 100644 index 000000000..562e69fa1 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h @@ -0,0 +1,185 @@ +/* Machine-dependent pthreads configuration and inline functions. + powerpc version. + Copyright (C) 2002, 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* These routines are from Appendix G of the 'PowerPC 601 RISC Microprocessor + User's Manual', by IBM and Motorola. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline __attribute__ ((always_inline)) +#endif + +extern long int testandset (int *spinlock); +extern int __compare_and_swap (long int *p, long int oldval, long int newval); +extern int __compare_and_swap32 (int *p, int oldval, int newval); + +/* For multiprocessor systems, we want to ensure all memory accesses + are completed before we reset a lock. On other systems, we still + need to make sure that the compiler has flushed everything to memory. */ +#define MEMORY_BARRIER() __asm__ __volatile__ ("lwsync" : : : "memory") +#define READ_MEMORY_BARRIER() __asm__ __volatile__ ("lwsync" : : : "memory") +#define WRITE_MEMORY_BARRIER() __asm__ __volatile__ ("eieio" : : : "memory") + +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 16*1024*1024 + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("r1"); + +/* Register r13 (tp) is reserved by the ABI as "thread pointer". */ +struct _pthread_descr_struct; +register struct _pthread_descr_struct *__thread_self __asm__("r13"); + +/* Return the thread descriptor for the current thread. */ +#define THREAD_SELF __thread_self + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr)) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + ((void) (descr), THREAD_SELF->member) +#define THREAD_GETMEM_NC(descr, member) \ + ((void) (descr), THREAD_SELF->member) +#define THREAD_SETMEM(descr, member, value) \ + ((void) (descr), THREAD_SELF->member = (value)) +#define THREAD_SETMEM_NC(descr, member, value) \ + ((void) (descr), THREAD_SELF->member = (value)) + +/* Compare-and-swap for semaphores. */ +/* note that test-and-set(x) is the same as !compare-and-swap(x, 0, 1) */ + +#define HAS_COMPARE_AND_SWAP +#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS + +PT_EI int +__compare_and_swap (long int *p, long int oldval, long int newval) +{ + long int ret; + + __asm__ __volatile__ ( + "0: ldarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stdcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + /* This version of __compare_and_swap is to be used when acquiring + a lock, so we don't need to worry about whether other memory + operations have completed, but we do need to be sure that any loads + after this point really occur after we have acquired the lock. */ + __asm__ __volatile__ ("isync" : : : "memory"); + return (int)(ret == 0); +} + +PT_EI int +__compare_and_swap_with_release_semantics (long int *p, + long int oldval, long int newval) +{ + long int ret; + + MEMORY_BARRIER (); + __asm__ __volatile__ ( + "0: ldarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stdcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + return (int)(ret == 0); +} + +PT_EI int +__compare_and_swap32 (int *p, int oldval, int newval) +{ + int ret; + + __asm__ __volatile__ ( + "0: lwarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + /* This version of __compare_and_swap is to be used when acquiring + a lock, so we don't need to worry about whether other memory + operations have completed, but we do need to be sure that any loads + after this point really occur after we have acquired the lock. */ + __asm__ __volatile__ ("isync" : : : "memory"); + return (int)(ret == 0); +} + +PT_EI int +__compare_and_swap32_with_release_semantics (long int *p, + long int oldval, long int newval) +{ + long int ret; + + MEMORY_BARRIER (); + __asm__ __volatile__ ( + "0: lwarx %0,0,%1 ;" + " xor. %0,%3,%0;" + " bne 1f;" + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r"(newval), "r"(oldval) + : "cr0", "memory"); + return (int)(ret == 0); +} + +PT_EI long int +testandset (int *p) +{ + long int ret, val = 1; + + MEMORY_BARRIER (); + __asm__ __volatile__ ( + "0: lwarx %0,0,%1 ;" + " cmpwi 0,%0,0;" + " bne 1f;" + " stwcx. %2,0,%1;" + " bne- 0b;" + "1: " + : "=&r"(ret) + : "r"(p), "r" (val) + : "cr0", "memory"); + MEMORY_BARRIER (); + return ret != 0; +} + +#endif /* pt-machine.h */ diff --git a/libpthread/linuxthreads/sysdeps/powerpc/pspinlock.c b/libpthread/linuxthreads/sysdeps/powerpc/pspinlock.c new file mode 100644 index 000000000..bb88a0690 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/pspinlock.c @@ -0,0 +1,8 @@ +#include +#include + +#if __WORDSIZE == 32 +# include "powerpc32/pspinlock.c" +#else +# include "powerpc64/pspinlock.c" +#endif diff --git a/libpthread/linuxthreads/sysdeps/powerpc/pt-machine.h b/libpthread/linuxthreads/sysdeps/powerpc/pt-machine.h new file mode 100644 index 000000000..55e922efd --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/pt-machine.h @@ -0,0 +1,8 @@ +#include +#include + +#if __WORDSIZE == 32 +# include "powerpc32/pt-machine.h" +#else +# include "powerpc64/pt-machine.h" +#endif diff --git a/libpthread/linuxthreads/sysdeps/powerpc/tcb-offsets.sym b/libpthread/linuxthreads/sysdeps/powerpc/tcb-offsets.sym new file mode 100644 index 000000000..7c5cca01e --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/tcb-offsets.sym @@ -0,0 +1,19 @@ +#include +#include + +-- This line separates the #include lines from conditionals. + +# ifdef USE_TLS + +-- Abuse tls.h macros to derive offsets relative to the thread register. +# undef __thread_register +# define __thread_register ((void *) 0) +# define thread_offsetof(mem) ((ptrdiff_t) THREAD_SELF + offsetof (struct _pthread_descr_struct, p_##mem)) + +# else + +# define thread_offsetof(mem) offsetof (tcbhead_t, mem) + +# endif + +MULTIPLE_THREADS_OFFSET thread_offsetof (multiple_threads) diff --git a/libpthread/linuxthreads/sysdeps/powerpc/tls.h b/libpthread/linuxthreads/sysdeps/powerpc/tls.h new file mode 100644 index 000000000..1ae0b60ff --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/powerpc/tls.h @@ -0,0 +1,165 @@ +/* Definitions for thread-local data handling. linuxthreads/PPC version. + Copyright (C) 2003, 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. */ + +#ifndef _TLS_H +#define _TLS_H + +#ifndef __ASSEMBLER__ + +# include +# include +# include + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + struct + { + void *val; + bool is_static; + } pointer; +} dtv_t; + +#else /* __ASSEMBLER__ */ +# include +#endif /* __ASSEMBLER__ */ + +#ifdef HAVE_TLS_SUPPORT + +/* Signal that TLS support is available. */ +# define USE_TLS 1 + +# ifndef __ASSEMBLER__ + +/* 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_descr_struct) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE 0 + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE \ + (sizeof (struct _pthread_descr_struct) \ + + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1))) + +/* The following assumes that TP (R2 or R13) is 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_descr is allocated immediately ahead of the + TCB. This implies that the pthread_descr address is + TP - (TLS_PRE_TCB_SIZE + 0x7000). */ +#define TLS_TCB_OFFSET 0x7000 + +/* The DTV is allocated at the TP; the TCB is placed elsewhere. */ +/* This is not really true for powerpc64. We are following alpha + where the DTV pointer is first doubleword in the TCB. */ +# define TLS_DTV_AT_TP 1 + +/* 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) + +/* We still need this define so that tcb-offsets.sym can override it and + use THREAD_SELF to generate MULTIPLE_THREADS_OFFSET. */ +# define __thread_register ((void *) __thread_self) + +/* 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. + + The global register variable is declared in pt-machine.h with the + wrong type, so we need some extra casts to get the desired result. + This avoids a lvalue cast that gcc-3.4 does not like. */ +# define TLS_INIT_TP(TCBP, SECONDCALL) \ + (__thread_self = (struct _pthread_descr_struct *) \ + ((void *) (TCBP) + TLS_TCB_OFFSET), NULL) + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) ((void *) __thread_self - TLS_TCB_OFFSET))[-1].dtv) + +/* Return the thread descriptor for the current thread. */ +# undef THREAD_SELF +# define THREAD_SELF \ + ((pthread_descr) (__thread_register \ + - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) + +# undef INIT_THREAD_SELF +# define INIT_THREAD_SELF(DESCR, NR) \ + (__thread_self = (struct _pthread_descr_struct *)((void *) (DESCR) \ + + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE)) + +/* Make sure we have the p_multiple_threads member in the thread structure. + See below. */ +# define TLS_MULTIPLE_THREADS_IN_TCB 1 + +/* Get the thread descriptor definition. */ +# include + +/* 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__ */ + +#elif !defined __ASSEMBLER__ + +/* This overlaps the start of the pthread_descr. System calls + and such use this to find the multiple_threads flag and need + to use the same offset relative to the thread register in both + single-threaded and multi-threaded code. */ +typedef struct +{ + void *tcb; /* Never used. */ + dtv_t *dtv; /* Never used. */ + void *self; /* Used only if multithreaded, and rarely. */ + int multiple_threads; /* Only this member is really used. */ +} tcbhead_t; + +#define NONTLS_INIT_TP \ + do { \ + static const tcbhead_t nontls_init_tp = { .multiple_threads = 0 }; \ + __thread_self = (__typeof (__thread_self)) &nontls_init_tp; \ + } while (0) + +#endif /* HAVE_TLS_SUPPORT */ + +#endif /* tls.h */ -- cgit v1.2.3