summaryrefslogtreecommitdiff
path: root/libpthread/linuxthreads/sysdeps/powerpc/powerpc64
diff options
context:
space:
mode:
authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
commit6a8ccc95528f5e86a8770ed15ce89609b5b3dee9 (patch)
treebbd4df35b4d4a6a8b00d7a5e61fb2668b850ad62 /libpthread/linuxthreads/sysdeps/powerpc/powerpc64
parent398a27a5b323956344b4f831d892fed3bd9813c7 (diff)
remove linuxthreads.new, rename linuxthreads.old
Linuxthreads.new isn't really useful with the existence of NPTL/TLS for well supported architectures. There is no reason to use LT.new for ARM/MIPS or other architectures supporting NPTL/TLS. It is not available for noMMU architectures like Blackfin or FR-V. To simplify the live of the few uClibc-ng developers, LT.new is removed and LT.old is renamed to LT. LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/powerpc/powerpc64')
-rw-r--r--libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c69
-rw-r--r--libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h184
2 files changed, 0 insertions, 253 deletions
diff --git a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c b/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c
deleted file mode 100644
index f588c62c7..000000000
--- a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pspinlock.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* 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, see <http://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <pthread.h>
-#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
deleted file mode 100644
index b9193a871..000000000
--- a/libpthread/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h
+++ /dev/null
@@ -1,184 +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, see <http://www.gnu.org/licenses/>. */
-
-/* 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_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 */