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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
commite1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a (patch)
tree2c8d14e4dcc733f4227f0984ed05da5826b13acd /libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h
parent6b6ede3d15f04fe825cfa9f697507457e3640344 (diff)
Revert "resolve merge"
This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h')
-rw-r--r--libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h106
1 files changed, 0 insertions, 106 deletions
diff --git a/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h b/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h
deleted file mode 100644
index e8c03f9e5..000000000
--- a/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * sysdeps/microblaze/pt-machine.h -- microblaze-specific pthread definitions
- *
- * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
- * Copyright (C) 2002 NEC Electronics Corporation
- * Copyright (C) 2002 Miles Bader <miles@gnu.org>
- *
- * This file is subject to the terms and conditions of the GNU Lesser
- * General Public License. See the file COPYING.LIB in the main
- * directory of this archive for more details.
- *
- * Written by Miles Bader <miles@gnu.org>
- */
-
-#ifndef _PT_MACHINE_H
-#define _PT_MACHINE_H 1
-
-#include <features.h>
-
-#ifndef PT_EI
-# define PT_EI extern inline
-#endif
-
-extern long int testandset (int *spinlock);
-extern int __compare_and_swap (long *ptr, long old, long new);
-
-/* 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");
-
-#define HAS_COMPARE_AND_SWAP
-#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
-#define IMPLEMENT_TAS_WITH_CAS
-
-/* Atomically: If *PTR == OLD, set *PTR to NEW and return true,
- otherwise do nothing and return false. */
-PT_EI int __compare_and_swap (long *ptr, long old, long new)
-{
- unsigned long psw;
-
- /* disable interrupts */
- /* This is ugly ugly ugly! */
- __asm__ __volatile__ ("mfs %0, rmsr;"
- "andi r3, %0, ~2;"
- "mts rmsr, r3;"
- : "=&r" (psw)
- :
- : "r3");
-
- if (likely (*ptr == old))
- {
- *ptr = new;
- __asm__ __volatile__ ("mts rmsr, %0;" :: "r" (psw)); /* re-enable */
- return 1;
- }
- else
- {
- __asm__ __volatile__ ("mts rmsr, %0;" :: "r" (psw)); /* re-enable */
- return 0;
- }
-}
-
-/* like above's __compare_and_swap() but it first syncs the memory
- (This is also the difference between both functions in e.g.
- ../powerpc/pt-machine.h)
- Doing this additional sync fixes a hang of __pthread_alt_unlock()
- (Falk Brettschneider <fbrettschneider@baumeroptronic.de>) */
-PT_EI int
-__compare_and_swap_with_release_semantics (long *p,
- long oldval, long newval)
-{
- __asm__ __volatile__ ("" : : : "memory"); /*MEMORY_BARRIER ();*/
- return __compare_and_swap (p, oldval, newval);
-}
-
-
-#ifndef IMPLEMENT_TAS_WITH_CAS
-/* Spinlock implementation; required. */
-PT_EI long int testandset (int *spinlock)
-{
- unsigned psw;
-
- /* disable interrupts */
- __asm__ __volatile__ ("mfs %0, rmsr;"
- "andi r3, %0, ~2;"
- "mts rmsr, r3;"
- : "=&r" (psw)
- :
- : "r3");
-
- if (*spinlock)
- {
- /* Enable ints */
- __asm__ __volatile__ ("mts rmsr, %0;" :: "r" (psw));
- return 1;
- } else {
- *spinlock=1;
- /* Enable ints */
- __asm__ __volatile__ ("mts rmsr, %0;" :: "r" (psw));
- return 0;
- }
-}
-
-#endif
-#endif /* pt-machine.h */