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Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc64/atomic-machine.h')
| -rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc64/atomic-machine.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc64/atomic-machine.h b/REORG.TODO/sysdeps/sparc/sparc64/atomic-machine.h new file mode 100644 index 0000000000..72009329c3 --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc64/atomic-machine.h @@ -0,0 +1,129 @@ +/* Atomic operations. sparc64 version. + Copyright (C) 2003-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <stdint.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 int16_t atomic16_t; +typedef uint16_t uatomic16_t; +typedef int_fast16_t atomic_fast16_t; +typedef uint_fast16_t uatomic_fast16_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 int64_t atomic64_t; +typedef uint64_t uatomic64_t; +typedef int_fast64_t atomic_fast64_t; +typedef uint_fast64_t uatomic_fast64_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + +#define __HAVE_64B_ATOMICS 1 +#define USE_ATOMIC_COMPILER_BUILTINS 0 + +/* XXX Is this actually correct? */ +#define ATOMIC_EXCHANGE_USES_CAS 1 + + +#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ + (abort (), (__typeof (*mem)) 0) + +#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ + (abort (), (__typeof (*mem)) 0) + +#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ +({ \ + __typeof (*(mem)) __acev_tmp; \ + __typeof (mem) __acev_mem = (mem); \ + if (__builtin_constant_p (oldval) && (oldval) == 0) \ + __asm __volatile ("cas [%3], %%g0, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "m" (*__acev_mem), "r" (__acev_mem), \ + "0" (newval) : "memory"); \ + else \ + __asm __volatile ("cas [%4], %2, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \ + "0" (newval) : "memory"); \ + __acev_tmp; }) + +#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ +({ \ + __typeof (*(mem)) __acev_tmp; \ + __typeof (mem) __acev_mem = (mem); \ + if (__builtin_constant_p (oldval) && (oldval) == 0) \ + __asm __volatile ("casx [%3], %%g0, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "m" (*__acev_mem), "r" (__acev_mem), \ + "0" ((long) (newval)) : "memory"); \ + else \ + __asm __volatile ("casx [%4], %2, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "r" ((long) (oldval)), "m" (*__acev_mem), \ + "r" (__acev_mem), "0" ((long) (newval)) : "memory"); \ + __acev_tmp; }) + +#define atomic_exchange_acq(mem, newvalue) \ + ({ __typeof (*(mem)) __oldval, __val; \ + __typeof (mem) __memp = (mem); \ + __typeof (*(mem)) __value = (newvalue); \ + \ + if (sizeof (*(mem)) == 4) \ + __asm ("swap %0, %1" \ + : "=m" (*__memp), "=r" (__oldval) \ + : "m" (*__memp), "1" (__value) : "memory"); \ + else \ + { \ + __val = *__memp; \ + do \ + { \ + __oldval = __val; \ + __val = atomic_compare_and_exchange_val_acq (__memp, __value, \ + __oldval); \ + } \ + while (__builtin_expect (__val != __oldval, 0)); \ + } \ + __oldval; }) + +#define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \ + atomic_compare_and_exchange_val_acq (mem, newval, oldval) + +#define atomic_exchange_24_rel(mem, newval) \ + atomic_exchange_rel (mem, newval) + +#define atomic_full_barrier() \ + __asm __volatile ("membar #LoadLoad | #LoadStore" \ + " | #StoreLoad | #StoreStore" : : : "memory") +#define atomic_read_barrier() \ + __asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory") +#define atomic_write_barrier() \ + __asm __volatile ("membar #LoadStore | #StoreStore" : : : "memory") + +extern void __cpu_relax (void); +#define atomic_spin_nop() __cpu_relax () |