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Update.
* sysdeps/x86_64/bits/atomic.h: New file. * sysdeps/i386/i686/bits/atomic.h: Fix asm syntax for 8- and 16-bit operations.
This commit is contained in:
Ulrich Drepper
parent
dca99d27b7
commit
c10c099c57
@ -1,5 +1,10 @@
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2002-11-27 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/x86_64/bits/atomic.h: New file.
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* sysdeps/i386/i686/bits/atomic.h: Fix asm syntax for 8- and
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16-bit operations.
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* sysdeps/unix/sysv/linux/raise.c (raise): Use INTERNAL_SYSCALL if
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possible since gettid cannot fail.
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@ -57,14 +57,14 @@ typedef uintmax_t uatomic_max_t;
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#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgb %2, %1; setne %0" \
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__asm __volatile (LOCK "cmpxchgb %b2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "q" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgw %2, %1; setne %0" \
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__asm __volatile (LOCK "cmpxchgw %w2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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@ -121,11 +121,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_exchange_and_add(mem, value) \
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({ __typeof (*mem) result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "xaddb %0, %1" \
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__asm __volatile (LOCK "xaddb %b0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "xaddw %0, %1" \
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__asm __volatile (LOCK "xaddw %w0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -150,11 +150,11 @@ typedef uintmax_t uatomic_max_t;
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else if (__builtin_constant_p (value) && (value) == 1) \
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atomic_decrement (mem); \
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else if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %1, %0" \
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__asm __volatile (LOCK "addb %b1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %1, %0" \
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__asm __volatile (LOCK "addw %w1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -178,11 +178,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_add_negative(mem, value) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %2, %0; sets %1" \
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__asm __volatile (LOCK "addb %b2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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: "iq" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %2, %0; sets %1" \
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__asm __volatile (LOCK "addw %w2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -197,11 +197,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_add_zero(mem, value) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %2, %0; setz %1" \
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__asm __volatile (LOCK "addb %b2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %2, %0; setz %1" \
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__asm __volatile (LOCK "addw %w2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -215,11 +215,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_increment(mem) \
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(void) ({ if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "incb %0" \
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__asm __volatile (LOCK "incb %b0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "incw %0" \
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__asm __volatile (LOCK "incw %w0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -242,11 +242,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_increment_and_test(mem) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "incb %0; sete %1" \
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__asm __volatile (LOCK "incb %0; sete %b1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "incw %0; sete %1" \
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__asm __volatile (LOCK "incw %0; sete %w1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -260,11 +260,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_decrement(mem) \
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(void) ({ if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "decb %0" \
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__asm __volatile (LOCK "decb %b0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "decw %0" \
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__asm __volatile (LOCK "decw %w0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -287,11 +287,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_decrement_and_test(mem) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "decb %0; sete %1" \
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__asm __volatile (LOCK "decb %b0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "decw %0; sete %1" \
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__asm __volatile (LOCK "decw %w0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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@ -305,11 +305,11 @@ typedef uintmax_t uatomic_max_t;
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#define atomic_bit_set(mem, bit) \
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(void) ({ if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "orb %2, %0" \
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__asm __volatile (LOCK "orb %b2, %0" \
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: "=m" (*mem) \
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: "0" (*mem), "i" (1 << (bit))); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "orw %2, %0" \
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__asm __volatile (LOCK "orw %w2, %0" \
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: "=m" (*mem) \
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: "0" (*mem), "i" (1 << (bit))); \
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else if (sizeof (*mem) == 4) \
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294
nptl/sysdeps/x86_64/bits/atomic.h
Normal file
294
nptl/sysdeps/x86_64/bits/atomic.h
Normal file
@ -0,0 +1,294 @@
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/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdint.h>
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typedef int8_t atomic8_t;
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typedef uint8_t uatomic8_t;
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typedef int_fast8_t atomic_fast8_t;
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typedef uint_fast8_t uatomic_fast8_t;
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typedef int16_t atomic16_t;
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typedef uint16_t uatomic16_t;
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typedef int_fast16_t atomic_fast16_t;
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typedef uint_fast16_t uatomic_fast16_t;
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typedef int32_t atomic32_t;
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typedef uint32_t uatomic32_t;
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typedef int_fast32_t atomic_fast32_t;
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typedef uint_fast32_t uatomic_fast32_t;
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typedef int64_t atomic64_t;
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typedef uint64_t uatomic64_t;
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typedef int_fast64_t atomic_fast64_t;
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typedef uint_fast64_t uatomic_fast64_t;
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typedef intptr_t atomicptr_t;
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typedef uintptr_t uatomicptr_t;
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typedef intmax_t atomic_max_t;
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typedef uintmax_t uatomic_max_t;
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#ifndef LOCK
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# ifdef UP
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# define LOCK /* nothing */
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# else
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# define LOCK "lock;"
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# endif
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#endif
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#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgb %b2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "q" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgw %w2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_32_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgl %2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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#define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
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({ unsigned char ret; \
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__asm __volatile (LOCK "cmpxchgq %q2, %1; setne %0" \
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: "=a" (ret), "=m" (*mem) \
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: "r" (newval), "1" (*mem), "0" (oldval)); \
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ret; })
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#define atomic_exchange_and_add(mem, value) \
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({ __typeof (*mem) result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "xaddb %b0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "xaddw %w0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "xaddl %0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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else \
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__asm __volatile (LOCK "xaddq %q0, %1" \
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: "=r" (result), "=m" (*mem) \
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: "0" (value), "1" (*mem)); \
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result; })
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#define atomic_add(mem, value) \
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(void) ({ if (__builtin_constant_p (value) && (value) == 1) \
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atomic_increment (mem); \
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else if (__builtin_constant_p (value) && (value) == 1) \
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atomic_decrement (mem); \
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else if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %b1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %w1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "addl %1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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else \
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__asm __volatile (LOCK "addq %q1, %0" \
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: "=m" (*mem) \
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: "ir" (value), "0" (*mem)); \
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})
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#define atomic_add_negative(mem, value) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %b2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %w2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "addl %2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else \
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__asm __volatile (LOCK "addq %q2, %0; sets %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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__result; })
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#define atomic_add_zero(mem, value) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "addb %b2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "addw %w2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "addl %2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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else \
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__asm __volatile (LOCK "addq %q2, %0; setz %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "ir" (value), "0" (*mem)); \
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__result; })
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#define atomic_increment(mem) \
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(void) ({ if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "incb %b0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "incw %w0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "incl %0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else \
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__asm __volatile (LOCK "incq %q0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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})
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#define atomic_increment_and_test(mem) \
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({ unsigned char __result; \
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if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "incb %b0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "incw %w0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "incl %0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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else \
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__asm __volatile (LOCK "incq %q0; sete %1" \
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: "=m" (*mem), "=qm" (__result) \
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: "0" (*mem)); \
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__result; })
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#define atomic_decrement(mem) \
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(void) ({ if (sizeof (*mem) == 1) \
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__asm __volatile (LOCK "decb %b0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 2) \
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__asm __volatile (LOCK "decw %w0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else if (sizeof (*mem) == 4) \
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__asm __volatile (LOCK "decl %0" \
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: "=m" (*mem) \
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: "0" (*mem)); \
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else \
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__asm __volatile (LOCK "decq %q0" \
|
||||
: "=m" (*mem) \
|
||||
: "0" (*mem)); \
|
||||
})
|
||||
|
||||
|
||||
#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 \
|
||||
__asm __volatile (LOCK "decq %q0; sete %1" \
|
||||
: "=m" (*mem), "=qm" (__result) \
|
||||
: "0" (*mem)); \
|
||||
__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 \
|
||||
__asm __volatile (LOCK "orq %q2, %0" \
|
||||
: "=m" (*mem) \
|
||||
: "0" (*mem), "i" (1 << (bit))); \
|
||||
})
|
||||
|
||||
|
||||
#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 \
|
||||
__asm __volatile (LOCK "btsq %3, %1; setc %0" \
|
||||
: "=q" (__result), "=m" (*mem) \
|
||||
: "1" (*mem), "i" (bit)); \
|
||||
__result; })
|
||||
Loading…
Reference in New Issue
Block a user