diff options
Diffstat (limited to 'sysdeps/sparc/sparc64')
| -rw-r--r-- | sysdeps/sparc/sparc64/atomicity.h | 82 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/bits/atomic.h | 103 |
2 files changed, 103 insertions, 82 deletions
diff --git a/sysdeps/sparc/sparc64/atomicity.h b/sysdeps/sparc/sparc64/atomicity.h index 4d2ca52487..e69de29bb2 100644 --- a/sysdeps/sparc/sparc64/atomicity.h +++ b/sysdeps/sparc/sparc64/atomicity.h @@ -1,82 +0,0 @@ -/* Low-level functions for atomic operations. Sparc64 version. - Copyright (C) 1999 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. */ - -#ifndef _ATOMICITY_H -#define _ATOMICITY_H 1 - -#include <inttypes.h> - -static inline int -__attribute__ ((unused)) -exchange_and_add (volatile uint32_t *mem, int val) -{ - uint32_t tmp1, tmp2; - - __asm__ __volatile__("1: lduw [%2], %0\n\t" - " add %0, %3, %1\n\t" - " cas [%2], %0, %1\n\t" - " sub %0, %1, %0\n\t" - " brnz,pn %0, 1b\n\t" - " nop" - : "=&r" (tmp1), "=&r" (tmp2) - : "r" (mem), "r" (val) - : "memory"); - return tmp2; -} - -static inline void -__attribute__ ((unused)) -atomic_add (volatile uint32_t *mem, int val) -{ - uint32_t tmp1, tmp2; - - __asm__ __volatile__("1: lduw [%2], %0\n\t" - " add %0, %3, %1\n\t" - " cas [%2], %0, %1\n\t" - " sub %0, %1, %0\n\t" - " brnz,pn %0, 1b\n\t" - " nop" - : "=&r" (tmp1), "=&r" (tmp2) - : "r" (mem), "r" (val) - : "memory"); -} - -static inline int -__attribute__ ((unused)) -compare_and_swap (volatile long int *p, long int oldval, long int newval) -{ - register long int tmp, tmp2; - - __asm__ __volatile__("1: ldx [%4], %0\n\t" - " mov %2, %1\n\t" - " cmp %0, %3\n\t" - " bne,a,pn %%xcc, 2f\n\t" - " mov 0, %0\n\t" - " casx [%4], %0, %1\n\t" - " sub %0, %1, %0\n\t" - " brnz,pn %0, 1b\n\t" - " mov 1, %0\n\t" - "2:" - : "=&r" (tmp), "=&r" (tmp2) - : "r" (newval), "r" (oldval), "r" (p) - : "memory"); - return tmp; -} - -#endif /* atomicity.h */ diff --git a/sysdeps/sparc/sparc64/bits/atomic.h b/sysdeps/sparc/sparc64/bits/atomic.h new file mode 100644 index 0000000000..bb3c91d8d0 --- /dev/null +++ b/sysdeps/sparc/sparc64/bits/atomic.h @@ -0,0 +1,103 @@ +/* Atomic operations. sparc64 version. + Copyright (C) 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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 __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ +({ \ + __typeof (*(mem)) __acev_tmp; \ + __typeof (mem) __acev_mem = (mem); \ + __asm __volatile ("cas [%4], %2, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \ + "0" (newval)); \ + __acev_tmp; }) + +#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ +({ \ + __typeof (*(mem)) __acev_tmp; \ + __typeof (mem) __acev_mem = (mem); \ + __asm __volatile ("casx [%4], %2, %0" \ + : "=r" (__acev_tmp), "=m" (*__acev_mem) \ + : "r" ((long) (oldval)), "m" (*__acev_mem), \ + "r" (__acev_mem), "0" ((long) (newval))); \ + __acev_tmp; }) + +#define atomic_exchange(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)); \ + 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_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 #StoreLoad | #StoreStore" : : : "memory") |