diff options
Diffstat (limited to 'sysdeps/alpha/bits/atomic.h')
| -rw-r--r-- | sysdeps/alpha/bits/atomic.h | 369 |
1 files changed, 0 insertions, 369 deletions
diff --git a/sysdeps/alpha/bits/atomic.h b/sysdeps/alpha/bits/atomic.h deleted file mode 100644 index 36a740c758..0000000000 --- a/sysdeps/alpha/bits/atomic.h +++ /dev/null @@ -1,369 +0,0 @@ -/* Copyright (C) 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; 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; - - -#ifdef UP -# define __MB /* nothing */ -#else -# define __MB " mb\n" -#endif - - -/* Compare and exchange. For all of the "xxx" routines, we expect a - "__prev" and a "__cmp" variable to be provided by the enclosing scope, - in which values are returned. */ - -#define __arch_compare_and_exchange_xxx_8_int(mem, new, old, mb1, mb2) \ -({ \ - unsigned long __tmp, __snew, __addr64; \ - __asm__ __volatile__ ( \ - mb1 \ - " andnot %[__addr8],7,%[__addr64]\n" \ - " insbl %[__new],%[__addr8],%[__snew]\n" \ - "1: ldq_l %[__tmp],0(%[__addr64])\n" \ - " extbl %[__tmp],%[__addr8],%[__prev]\n" \ - " cmpeq %[__prev],%[__old],%[__cmp]\n" \ - " beq %[__cmp],2f\n" \ - " mskbl %[__tmp],%[__addr8],%[__tmp]\n" \ - " or %[__snew],%[__tmp],%[__tmp]\n" \ - " stq_c %[__tmp],0(%[__addr64])\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - "2:" \ - : [__prev] "=&r" (__prev), \ - [__snew] "=&r" (__snew), \ - [__tmp] "=&r" (__tmp), \ - [__cmp] "=&r" (__cmp), \ - [__addr64] "=&r" (__addr64) \ - : [__addr8] "r" (mem), \ - [__old] "Ir" ((uint64_t)(uint8_t)(uint64_t)(old)), \ - [__new] "r" (new) \ - : "memory"); \ -}) - -#define __arch_compare_and_exchange_xxx_16_int(mem, new, old, mb1, mb2) \ -({ \ - unsigned long __tmp, __snew, __addr64; \ - __asm__ __volatile__ ( \ - mb1 \ - " andnot %[__addr16],7,%[__addr64]\n" \ - " inswl %[__new],%[__addr16],%[__snew]\n" \ - "1: ldq_l %[__tmp],0(%[__addr64])\n" \ - " extwl %[__tmp],%[__addr16],%[__prev]\n" \ - " cmpeq %[__prev],%[__old],%[__cmp]\n" \ - " beq %[__cmp],2f\n" \ - " mskwl %[__tmp],%[__addr16],%[__tmp]\n" \ - " or %[__snew],%[__tmp],%[__tmp]\n" \ - " stq_c %[__tmp],0(%[__addr64])\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - "2:" \ - : [__prev] "=&r" (__prev), \ - [__snew] "=&r" (__snew), \ - [__tmp] "=&r" (__tmp), \ - [__cmp] "=&r" (__cmp), \ - [__addr64] "=&r" (__addr64) \ - : [__addr16] "r" (mem), \ - [__old] "Ir" ((uint64_t)(uint16_t)(uint64_t)(old)), \ - [__new] "r" (new) \ - : "memory"); \ -}) - -#define __arch_compare_and_exchange_xxx_32_int(mem, new, old, mb1, mb2) \ -({ \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldl_l %[__prev],%[__mem]\n" \ - " cmpeq %[__prev],%[__old],%[__cmp]\n" \ - " beq %[__cmp],2f\n" \ - " mov %[__new],%[__cmp]\n" \ - " stl_c %[__cmp],%[__mem]\n" \ - " beq %[__cmp],1b\n" \ - mb2 \ - "2:" \ - : [__prev] "=&r" (__prev), \ - [__cmp] "=&r" (__cmp) \ - : [__mem] "m" (*(mem)), \ - [__old] "Ir" ((uint64_t)(atomic32_t)(uint64_t)(old)), \ - [__new] "Ir" (new) \ - : "memory"); \ -}) - -#define __arch_compare_and_exchange_xxx_64_int(mem, new, old, mb1, mb2) \ -({ \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldq_l %[__prev],%[__mem]\n" \ - " cmpeq %[__prev],%[__old],%[__cmp]\n" \ - " beq %[__cmp],2f\n" \ - " mov %[__new],%[__cmp]\n" \ - " stq_c %[__cmp],%[__mem]\n" \ - " beq %[__cmp],1b\n" \ - mb2 \ - "2:" \ - : [__prev] "=&r" (__prev), \ - [__cmp] "=&r" (__cmp) \ - : [__mem] "m" (*(mem)), \ - [__old] "Ir" ((uint64_t)(old)), \ - [__new] "Ir" (new) \ - : "memory"); \ -}) - -/* For all "bool" routines, we return FALSE if exchange succesful. */ - -#define __arch_compare_and_exchange_bool_8_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_8_int(mem, new, old, mb1, mb2); \ - !__cmp; }) - -#define __arch_compare_and_exchange_bool_16_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_16_int(mem, new, old, mb1, mb2); \ - !__cmp; }) - -#define __arch_compare_and_exchange_bool_32_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_32_int(mem, new, old, mb1, mb2); \ - !__cmp; }) - -#define __arch_compare_and_exchange_bool_64_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_64_int(mem, new, old, mb1, mb2); \ - !__cmp; }) - -/* For all "val" routines, return the old value whether exchange - successful or not. */ - -#define __arch_compare_and_exchange_val_8_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_8_int(mem, new, old, mb1, mb2); \ - (typeof (*mem))__prev; }) - -#define __arch_compare_and_exchange_val_16_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_16_int(mem, new, old, mb1, mb2); \ - (typeof (*mem))__prev; }) - -#define __arch_compare_and_exchange_val_32_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_32_int(mem, new, old, mb1, mb2); \ - (typeof (*mem))__prev; }) - -#define __arch_compare_and_exchange_val_64_int(mem, new, old, mb1, mb2) \ -({ unsigned long __prev; int __cmp; \ - __arch_compare_and_exchange_xxx_64_int(mem, new, old, mb1, mb2); \ - (typeof (*mem))__prev; }) - -/* Compare and exchange with "acquire" semantics, ie barrier after. */ - -#define atomic_compare_and_exchange_bool_acq(mem, new, old) \ - __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \ - mem, new, old, "", __MB) - -#define atomic_compare_and_exchange_val_acq(mem, new, old) \ - __atomic_val_bysize (__arch_compare_and_exchange_val, int, \ - mem, new, old, "", __MB) - -/* Compare and exchange with "release" semantics, ie barrier before. */ - -#define atomic_compare_and_exchange_bool_rel(mem, new, old) \ - __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \ - mem, new, old, __MB, "") - -#define atomic_compare_and_exchange_val_rel(mem, new, old) \ - __atomic_val_bysize (__arch_compare_and_exchange_val, int, \ - mem, new, old, __MB, "") - - -/* Atomically store value and return the previous value. */ - -#define __arch_exchange_8_int(mem, value, mb1, mb2) \ -({ \ - unsigned long __ret, __tmp, __addr64, __sval; \ - __asm__ __volatile__ ( \ - mb1 \ - " andnot %[__addr8],7,%[__addr64]\n" \ - " insbl %[__value],%[__addr8],%[__sval]\n" \ - "1: ldq_l %[__tmp],0(%[__addr64])\n" \ - " extbl %[__tmp],%[__addr8],%[__ret]\n" \ - " mskbl %[__tmp],%[__addr8],%[__tmp]\n" \ - " or %[__sval],%[__tmp],%[__tmp]\n" \ - " stq_c %[__tmp],0(%[__addr64])\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__sval] "=&r" (__sval), \ - [__tmp] "=&r" (__tmp), \ - [__addr64] "=&r" (__addr64) \ - : [__addr8] "r" (mem), \ - [__value] "r" (value) \ - : "memory"); \ - __ret; }) - -#define __arch_exchange_16_int(mem, value, mb1, mb2) \ -({ \ - unsigned long __ret, __tmp, __addr64, __sval; \ - __asm__ __volatile__ ( \ - mb1 \ - " andnot %[__addr16],7,%[__addr64]\n" \ - " inswl %[__value],%[__addr16],%[__sval]\n" \ - "1: ldq_l %[__tmp],0(%[__addr64])\n" \ - " extwl %[__tmp],%[__addr16],%[__ret]\n" \ - " mskwl %[__tmp],%[__addr16],%[__tmp]\n" \ - " or %[__sval],%[__tmp],%[__tmp]\n" \ - " stq_c %[__tmp],0(%[__addr64])\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__sval] "=&r" (__sval), \ - [__tmp] "=&r" (__tmp), \ - [__addr64] "=&r" (__addr64) \ - : [__addr16] "r" (mem), \ - [__value] "r" (value) \ - : "memory"); \ - __ret; }) - -#define __arch_exchange_32_int(mem, value, mb1, mb2) \ -({ \ - signed int __ret, __tmp; \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldl_l %[__ret],%[__mem]\n" \ - " mov %[__val],%[__tmp]\n" \ - " stl_c %[__tmp],%[__mem]\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__tmp] "=&r" (__tmp) \ - : [__mem] "m" (*(mem)), \ - [__val] "Ir" (value) \ - : "memory"); \ - __ret; }) - -#define __arch_exchange_64_int(mem, value, mb1, mb2) \ -({ \ - unsigned long __ret, __tmp; \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldq_l %[__ret],%[__mem]\n" \ - " mov %[__val],%[__tmp]\n" \ - " stq_c %[__tmp],%[__mem]\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__tmp] "=&r" (__tmp) \ - : [__mem] "m" (*(mem)), \ - [__val] "Ir" (value) \ - : "memory"); \ - __ret; }) - -#define atomic_exchange_acq(mem, value) \ - __atomic_val_bysize (__arch_exchange, int, mem, value, "", __MB) - -#define atomic_exchange_rel(mem, value) \ - __atomic_val_bysize (__arch_exchange, int, mem, value, __MB, "") - - -/* Atomically add value and return the previous (unincremented) value. */ - -#define __arch_exchange_and_add_8_int(mem, value, mb1, mb2) \ - ({ __builtin_trap (); 0; }) - -#define __arch_exchange_and_add_16_int(mem, value, mb1, mb2) \ - ({ __builtin_trap (); 0; }) - -#define __arch_exchange_and_add_32_int(mem, value, mb1, mb2) \ -({ \ - signed int __ret, __tmp; \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldl_l %[__ret],%[__mem]\n" \ - " addl %[__ret],%[__val],%[__tmp]\n" \ - " stl_c %[__tmp],%[__mem]\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__tmp] "=&r" (__tmp) \ - : [__mem] "m" (*(mem)), \ - [__val] "Ir" ((signed int)(value)) \ - : "memory"); \ - __ret; }) - -#define __arch_exchange_and_add_64_int(mem, value, mb1, mb2) \ -({ \ - unsigned long __ret, __tmp; \ - __asm__ __volatile__ ( \ - mb1 \ - "1: ldq_l %[__ret],%[__mem]\n" \ - " addq %[__ret],%[__val],%[__tmp]\n" \ - " stq_c %[__tmp],%[__mem]\n" \ - " beq %[__tmp],1b\n" \ - mb2 \ - : [__ret] "=&r" (__ret), \ - [__tmp] "=&r" (__tmp) \ - : [__mem] "m" (*(mem)), \ - [__val] "Ir" ((unsigned long)(value)) \ - : "memory"); \ - __ret; }) - -/* ??? Barrier semantics for atomic_exchange_and_add appear to be - undefined. Use full barrier for now, as that's safe. */ -#define atomic_exchange_and_add(mem, value) \ - __atomic_val_bysize (__arch_exchange_and_add, int, mem, value, __MB, __MB) - - -/* ??? Blah, I'm lazy. Implement these later. Can do better than the - compare-and-exchange loop provided by generic code. - -#define atomic_decrement_if_positive(mem) -#define atomic_bit_test_set(mem, bit) - -*/ - -#ifndef UP -# define atomic_full_barrier() __asm ("mb" : : : "memory"); -# define atomic_read_barrier() __asm ("mb" : : : "memory"); -# define atomic_write_barrier() __asm ("wmb" : : : "memory"); -#endif |