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Diffstat (limited to 'linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h')
| -rw-r--r-- | linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h b/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h deleted file mode 100644 index 562e69fa18..0000000000 --- a/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h +++ /dev/null @@ -1,185 +0,0 @@ -/* 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 */ |