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Diffstat (limited to 'linuxthreads/sysdeps/ia64/pt-machine.h')
| -rw-r--r-- | linuxthreads/sysdeps/ia64/pt-machine.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/linuxthreads/sysdeps/ia64/pt-machine.h b/linuxthreads/sysdeps/ia64/pt-machine.h deleted file mode 100644 index 6c5dfe93bb..0000000000 --- a/linuxthreads/sysdeps/ia64/pt-machine.h +++ /dev/null @@ -1,133 +0,0 @@ -/* Machine-dependent pthreads configuration and inline functions. - IA-64 version. - Copyright (C) 1999, 2000, 2002, 2003, 2004 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. */ - -#ifndef _PT_MACHINE_H -#define _PT_MACHINE_H 1 - -#include <ia64intrin.h> - -#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); - -/* Make sure gcc doesn't try to be clever and move things around on - us. We need to use _exactly_ the address the user gave us, not some - alias that contains the same information. */ -#define __atomic_fool_gcc(x) (*(volatile struct { int a[100]; } *)x) - -#ifndef ELF_MACHINE_NAME - -#define NEED_SEPARATE_REGISTER_STACK - -/* 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 32*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. - r12 (sp) is the stack pointer. */ -#define CURRENT_STACK_FRAME stack_pointer -register char *stack_pointer __asm__ ("sp"); - - -/* 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) sizeof (descr), THREAD_SELF->member) -#define THREAD_GETMEM_NC(descr, member) \ - ((void) sizeof (descr), THREAD_SELF->member) -#define THREAD_SETMEM(descr, member, value) \ - ((void) sizeof (descr), THREAD_SELF->member = (value)) -#define THREAD_SETMEM_NC(descr, member, value) \ - ((void) sizeof (descr), THREAD_SELF->member = (value)) - - -/* Memory barrier */ -#define MEMORY_BARRIER() __sync_synchronize () - - -#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 readval; - - __asm__ __volatile__ - ("mov ar.ccv=%4;;\n\t" - "cmpxchg8.acq %0=%1,%2,ar.ccv" - : "=r" (readval), "=m" (__atomic_fool_gcc (p)) - : "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval) - : "memory"); - return readval == oldval; -} - -PT_EI int -__compare_and_swap_with_release_semantics (long int *p, - long int oldval, - long int newval) -{ - long int readval; - - __asm__ __volatile__ - ("mov ar.ccv=%4;;\n\t" - "cmpxchg8.rel %0=%1,%2,ar.ccv" - : "=r" (readval), "=m" (__atomic_fool_gcc (p)) - : "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval) - : "memory"); - return readval == oldval; -} - -#endif /* ELF_MACHINE_NAME */ - -/* Spinlock implementation; required. */ -PT_EI long int -testandset (int *spinlock) -{ - long int ret; - - __asm__ __volatile__( - "xchg4 %0=%1,%2" - : "=r"(ret), "=m"(__atomic_fool_gcc (spinlock)) - : "r"(1), "m"(__atomic_fool_gcc (spinlock)) - : "memory"); - - return ret; -} - -/* Indicate that we are looping. */ -#define BUSY_WAIT_NOP __asm__ ("hint @pause") - -#endif /* pt-machine.h */ |