diff options
Diffstat (limited to 'nptl/sysdeps/i386/i486/bits/atomic.h')
| -rw-r--r-- | nptl/sysdeps/i386/i486/bits/atomic.h | 348 |
1 files changed, 0 insertions, 348 deletions
diff --git a/nptl/sysdeps/i386/i486/bits/atomic.h b/nptl/sysdeps/i386/i486/bits/atomic.h deleted file mode 100644 index 80a49872e1..0000000000 --- a/nptl/sysdeps/i386/i486/bits/atomic.h +++ /dev/null @@ -1,348 +0,0 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. - - 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; - - -#ifndef LOCK -# ifdef UP -# define LOCK /* nothing */ -# else -# define LOCK "lock;" -# endif -#endif - - -#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \ - ({ unsigned char ret; \ - __asm __volatile (LOCK "cmpxchgb %b2, %1; setne %0" \ - : "=a" (ret), "=m" (*mem) \ - : "q" (newval), "1" (*mem), "0" (oldval)); \ - ret; }) - -#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \ - ({ unsigned char ret; \ - __asm __volatile (LOCK "cmpxchgw %w2, %1; setne %0" \ - : "=a" (ret), "=m" (*mem) \ - : "r" (newval), "1" (*mem), "0" (oldval)); \ - ret; }) - -#define __arch_compare_and_exchange_32_acq(mem, newval, oldval) \ - ({ unsigned char ret; \ - __asm __volatile (LOCK "cmpxchgl %2, %1; setne %0" \ - : "=a" (ret), "=m" (*mem) \ - : "r" (newval), "1" (*mem), "0" (oldval)); \ - ret; }) - -/* XXX We do not really need 64-bit compare-and-exchange. At least - not in the moment. Using it would mean causing portability - problems since not many other 32-bit architectures have support for - such an operation. So don't define any code for now. If it is - really going to be used the code below can be used on Intel Pentium - and later, but NOT on i486. */ -#if 1 -# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \ - (abort (), 0) -#else -# ifdef __PIC__ -# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \ - ({ unsigned char ret; \ - int ignore; \ - __asm __volatile ("xchgl %3, %%ebx\n\t" \ - LOCK "cmpxchg8b %2, %1\n\t" \ - "setne %0\n\t" \ - "xchgl %3, %%ebx" \ - : "=a" (ret), "=m" (*mem), "=d" (ignore) \ - : "DS" (((unsigned long long int) (newval)) \ - & 0xffffffff), \ - "c" (((unsigned long long int) (newval)) >> 32), \ - "1" (*mem), "0" (((unsigned long long int) (oldval)) \ - & 0xffffffff), \ - "2" (((unsigned long long int) (oldval)) >> 32)); \ - ret; }) -# else -# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \ - ({ unsigned char ret; \ - int ignore; \ - __asm __volatile (LOCK "cmpxchg8b %2, %1; setne %0" \ - : "=a" (ret), "=m" (*mem), "=d" (ignore) \ - : "b" (((unsigned long long int) (newval)) \ - & 0xffffffff), \ - "c" (((unsigned long long int) (newval)) >> 32), \ - "1" (*mem), "0" (((unsigned long long int) (oldval)) \ - & 0xffffffff), \ - "2" (((unsigned long long int) (oldval)) >> 32)); \ - ret; }) -# endif -#endif - - -#define atomic_exchange_and_add(mem, value) \ - ({ __typeof (*mem) result; \ - __typeof (value) addval = (value); \ - if (sizeof (*mem) == 1) \ - { \ - __asm __volatile (LOCK "xaddb %b0, %1" \ - : "=r" (result), "=m" (*mem) \ - : "0" (addval), "1" (*mem)); \ - result += addval; \ - } \ - else if (sizeof (*mem) == 2) \ - { \ - __asm __volatile (LOCK "xaddw %w0, %1" \ - : "=r" (result), "=m" (*mem) \ - : "0" (addval), "1" (*mem)); \ - result += addval; \ - } \ - else if (sizeof (*mem) == 4) \ - { \ - __asm __volatile (LOCK "xaddl %0, %1" \ - : "=r" (result), "=m" (*mem) \ - : "0" (addval), "1" (*mem)); \ - result += addval; \ - } \ - else \ - { \ - __typeof (*mem) oldval; \ - __typeof (mem) memp = (mem); \ - do \ - result = (oldval = *memp) + addval; \ - while (__arch_compare_and_exchange_64_acq (memp, result, oldval)); \ - } \ - result; }) - - -#define atomic_add(mem, value) \ - (void) ({ if (__builtin_constant_p (value) && (value) == 1) \ - atomic_increment (mem); \ - else if (__builtin_constant_p (value) && (value) == 1) \ - atomic_decrement (mem); \ - else if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "addb %b1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "addw %w1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "addl %1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "0" (*mem)); \ - else \ - { \ - __typeof (value) addval = (value); \ - __typeof (*mem) oldval; \ - __typeof (mem) memp = (mem); \ - do \ - oldval = *memp; \ - while (__arch_compare_and_exchange_64_acq (memp, \ - oldval + addval, \ - oldval)); \ - } \ - }) - - -#define atomic_add_negative(mem, value) \ - ({ unsigned char __result; \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "addb %b2, %0; sets %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "iq" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "addw %w2, %0; sets %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "ir" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "addl %2, %0; sets %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "ir" (value), "0" (*mem)); \ - else \ - abort (); \ - __result; }) - - -#define atomic_add_zero(mem, value) \ - ({ unsigned char __result; \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "addb %b2, %0; setz %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "ir" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "addw %w2, %0; setz %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "ir" (value), "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "addl %2, %0; setz %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "ir" (value), "0" (*mem)); \ - else \ - abort (); \ - __result; }) - - -#define atomic_increment(mem) \ - (void) ({ if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "incb %b0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "incw %w0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "incl %0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else \ - { \ - __typeof (*mem) oldval; \ - __typeof (mem) memp = (mem); \ - do \ - oldval = *memp; \ - while (__arch_compare_and_exchange_64_acq (memp, oldval + 1, \ - oldval)); \ - } \ - }) - - -#define atomic_increment_and_test(mem) \ - ({ unsigned char __result; \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "incb %0; sete %b1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "incw %0; sete %w1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "incl %0; sete %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else \ - abort (); \ - __result; }) - - -#define atomic_decrement(mem) \ - (void) ({ if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "decb %b0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "decw %w0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "decl %0" \ - : "=m" (*mem) \ - : "0" (*mem)); \ - else \ - { \ - __typeof (*mem) oldval; \ - __typeof (mem) memp = (mem); \ - do \ - oldval = *memp; \ - while (__arch_compare_and_exchange_64_acq (memp, oldval - 1, \ - oldval)); \ - } \ - }) - - -#define atomic_decrement_and_test(mem) \ - ({ unsigned char __result; \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "decb %b0; sete %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "decw %w0; sete %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "decl %0; sete %1" \ - : "=m" (*mem), "=qm" (__result) \ - : "0" (*mem)); \ - else \ - abort (); \ - __result; }) - - -#define atomic_bit_set(mem, bit) \ - (void) ({ if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "orb %b2, %0" \ - : "=m" (*mem) \ - : "0" (*mem), "i" (1 << (bit))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "orw %w2, %0" \ - : "=m" (*mem) \ - : "0" (*mem), "i" (1 << (bit))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "orl %2, %0" \ - : "=m" (*mem) \ - : "0" (*mem), "i" (1 << (bit))); \ - else \ - abort (); \ - }) - - -#define atomic_bit_test_set(mem, bit) \ - ({ unsigned char __result; \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK "btsb %3, %1; setc %0" \ - : "=q" (__result), "=m" (*mem) \ - : "1" (*mem), "i" (bit)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK "btsw %3, %1; setc %0" \ - : "=q" (__result), "=m" (*mem) \ - : "1" (*mem), "i" (bit)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK "btsl %3, %1; setc %0" \ - : "=q" (__result), "=m" (*mem) \ - : "1" (*mem), "i" (bit)); \ - else \ - abort (); \ - __result; }) |