summaryrefslogtreecommitdiff
path: root/libpthread
diff options
context:
space:
mode:
authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2011-02-09 20:08:20 +0100
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2011-02-09 20:08:20 +0100
commit6a0aa4add30eecf76b9d14ad3f204e4017f9f22c (patch)
tree00e2b15399c6b569c3ae733fc38c544334fdbd6a /libpthread
parent6349a663038dbe7b59467c5bd06cd5f5dc91c867 (diff)
arm: mv nptl specific atomic impl to common place
Thanks to Nitin Garg for notincing! Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libpthread')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h122
1 files changed, 0 insertions, 122 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h
deleted file mode 100644
index 8f63e2510..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Copyright (C) 2002, 2003, 2004, 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. */
-
-#include <stdint.h>
-#include <sysdep.h>
-
-
-typedef int8_t atomic8_t;
-typedef uint8_t uatomic8_t;
-typedef int_fast8_t atomic_fast8_t;
-typedef uint_fast8_t uatomic_fast8_t;
-
-typedef int32_t atomic32_t;
-typedef uint32_t uatomic32_t;
-typedef int_fast32_t atomic_fast32_t;
-typedef uint_fast32_t uatomic_fast32_t;
-
-typedef intptr_t atomicptr_t;
-typedef uintptr_t uatomicptr_t;
-typedef intmax_t atomic_max_t;
-typedef uintmax_t uatomic_max_t;
-
-void __arm_link_error (void);
-
-#ifdef __thumb2__
-#define atomic_full_barrier() \
- __asm__ __volatile__ \
- ("movw\tip, #0x0fa0\n\t" \
- "movt\tip, #0xffff\n\t" \
- "blx\tip" \
- : : : "ip", "lr", "cc", "memory");
-#else
-#define atomic_full_barrier() \
- __asm__ __volatile__ \
- ("mov\tip, #0xffff0fff\n\t" \
- "mov\tlr, pc\n\t" \
- "add\tpc, ip, #(0xffff0fa0 - 0xffff0fff)" \
- : : : "ip", "lr", "cc", "memory");
-#endif
-
-/* Atomic compare and exchange. This sequence relies on the kernel to
- provide a compare and exchange operation which is atomic on the
- current architecture, either via cleverness on pre-ARMv6 or via
- ldrex / strex on ARMv6. */
-
-#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
- ({ __arm_link_error (); oldval; })
-
-#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
- ({ __arm_link_error (); oldval; })
-
-/* It doesn't matter what register is used for a_oldval2, but we must
- specify one to work around GCC PR rtl-optimization/21223. Otherwise
- it may cause a_oldval or a_tmp to be moved to a different register. */
-
-#ifdef __thumb2__
-/* Thumb-2 has ldrex/strex. However it does not have barrier instructions,
- so we still need to use the kernel helper. */
-#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
- ({ register __typeof (oldval) a_oldval __asm__ ("r0"); \
- register __typeof (oldval) a_newval __asm__ ("r1") = (newval); \
- register __typeof (mem) a_ptr __asm__ ("r2") = (mem); \
- register __typeof (oldval) a_tmp __asm__ ("r3"); \
- register __typeof (oldval) a_oldval2 __asm__ ("r4") = (oldval); \
- __asm__ __volatile__ \
- ("0:\tldr\t%[tmp],[%[ptr]]\n\t" \
- "cmp\t%[tmp], %[old2]\n\t" \
- "bne\t1f\n\t" \
- "mov\t%[old], %[old2]\n\t" \
- "movw\t%[tmp], #0x0fc0\n\t" \
- "movt\t%[tmp], #0xffff\n\t" \
- "blx\t%[tmp]\n\t" \
- "bcc\t0b\n\t" \
- "mov\t%[tmp], %[old2]\n\t" \
- "1:" \
- : [old] "=&r" (a_oldval), [tmp] "=&r" (a_tmp) \
- : [new] "r" (a_newval), [ptr] "r" (a_ptr), \
- [old2] "r" (a_oldval2) \
- : "ip", "lr", "cc", "memory"); \
- a_tmp; })
-#else
-#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
- ({ register __typeof (oldval) a_oldval __asm__ ("r0"); \
- register __typeof (oldval) a_newval __asm__ ("r1") = (newval); \
- register __typeof (mem) a_ptr __asm__ ("r2") = (mem); \
- register __typeof (oldval) a_tmp __asm__ ("r3"); \
- register __typeof (oldval) a_oldval2 __asm__ ("r4") = (oldval); \
- __asm__ __volatile__ \
- ("0:\tldr\t%[tmp],[%[ptr]]\n\t" \
- "cmp\t%[tmp], %[old2]\n\t" \
- "bne\t1f\n\t" \
- "mov\t%[old], %[old2]\n\t" \
- "mov\t%[tmp], #0xffff0fff\n\t" \
- "mov\tlr, pc\n\t" \
- "add\tpc, %[tmp], #(0xffff0fc0 - 0xffff0fff)\n\t" \
- "bcc\t0b\n\t" \
- "mov\t%[tmp], %[old2]\n\t" \
- "1:" \
- : [old] "=&r" (a_oldval), [tmp] "=&r" (a_tmp) \
- : [new] "r" (a_newval), [ptr] "r" (a_ptr), \
- [old2] "r" (a_oldval2) \
- : "ip", "lr", "cc", "memory"); \
- a_tmp; })
-#endif
-
-#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
- ({ __arm_link_error (); oldval; })