553 lines
13 KiB
C
553 lines
13 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2006 by Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#include <atomic.h>
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/*
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* Theses are the void returning variants
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*/
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#define ATOMIC_INC(name, type) \
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void atomic_inc_##name(volatile type *target) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" addi %[lock],%[lock],1\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target) \
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: "cc"); \
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}
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ATOMIC_INC(long, unsigned long)
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ATOMIC_INC(8, uint8_t)
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ATOMIC_INC(uchar, uchar_t)
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ATOMIC_INC(16, uint16_t)
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ATOMIC_INC(ushort, ushort_t)
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ATOMIC_INC(32, uint32_t)
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ATOMIC_INC(uint, uint_t)
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ATOMIC_INC(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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void atomic_inc_64(volatile uint64_t *target)
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{
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/* XXX - Implement me */
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(*target)++;
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}
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#endif
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#define ATOMIC_DEC(name, type) \
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void atomic_dec_##name(volatile type *target) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" addi %[lock],%[lock],-1\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target) \
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: "cc"); \
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}
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ATOMIC_DEC(long, unsigned long)
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ATOMIC_DEC(8, uint8_t)
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ATOMIC_DEC(uchar, uchar_t)
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ATOMIC_DEC(16, uint16_t)
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ATOMIC_DEC(ushort, ushort_t)
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ATOMIC_DEC(32, uint32_t)
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ATOMIC_DEC(uint, uint_t)
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ATOMIC_DEC(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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void atomic_dec_64(volatile uint64_t *target)
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{
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/* XXX - Implement me */
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(*target)--;
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}
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#endif
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#define ATOMIC_ADD(name, type1, type2) \
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void atomic_add_##name(volatile type1 *target, type2 bits) \
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{ \
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type1 lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" add %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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}
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ATOMIC_ADD(8, uint8_t, int8_t)
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ATOMIC_ADD(char, uchar_t, signed char)
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ATOMIC_ADD(16, uint16_t, int16_t)
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ATOMIC_ADD(short, ushort_t, short)
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ATOMIC_ADD(32, uint32_t, int32_t)
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ATOMIC_ADD(int, uint_t, int)
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ATOMIC_ADD(long, ulong_t, long)
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void atomic_add_ptr(volatile void *target, ssize_t bits)
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{
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/* XXX - Implement me */
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*(caddr_t *)target += bits;
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}
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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void atomic_add_64(volatile uint64_t *target, int64_t bits)
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{
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/* XXX - Implement me */
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*target += bits;
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}
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#endif
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#define ATOMIC_OR(name, type) \
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void atomic_or_##name(volatile type *target, type bits) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" or %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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}
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//ATOMIC_OR(long, ulong_t)
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ATOMIC_OR(8, uint8_t)
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ATOMIC_OR(uchar, uchar_t)
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ATOMIC_OR(16, uint16_t)
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ATOMIC_OR(ushort, ushort_t)
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ATOMIC_OR(32, uint32_t)
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ATOMIC_OR(uint, uint_t)
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ATOMIC_OR(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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void atomic_or_64(volatile uint64_t *target, uint64_t bits)
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{
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/* XXX - Implement me */
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*target |= bits;
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}
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#endif
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#define ATOMIC_AND(name, type) \
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void atomic_and_##name(volatile type *target, type bits) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" and %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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}
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//ATOMIC_AND(long, ulong_t)
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ATOMIC_AND(8, uint8_t)
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ATOMIC_AND(uchar, uchar_t)
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ATOMIC_AND(16, uint16_t)
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ATOMIC_AND(ushort, ushort_t)
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ATOMIC_AND(32, uint32_t)
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ATOMIC_AND(uint, uint_t)
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ATOMIC_AND(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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void atomic_and_64(volatile uint64_t *target, uint64_t bits)
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{
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/* XXX - Implement me */
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*target &= bits;
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}
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#endif
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/*
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* New value returning variants
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*/
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#define ATOMIC_INC_NV(name, type) \
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type atomic_inc_##name##_nv(volatile type *target) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" addi %[lock],%[lock],1\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target) \
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: "cc"); \
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\
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return lock; \
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}
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ATOMIC_INC_NV(long, unsigned long)
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ATOMIC_INC_NV(8, uint8_t)
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ATOMIC_INC_NV(uchar, uchar_t)
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ATOMIC_INC_NV(16, uint16_t)
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ATOMIC_INC_NV(ushort, ushort_t)
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ATOMIC_INC_NV(32, uint32_t)
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ATOMIC_INC_NV(uint, uint_t)
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ATOMIC_INC_NV(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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uint64_t atomic_inc_64_nv(volatile uint64_t *target)
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{
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/* XXX - Implement me */
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return (++(*target));
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}
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#endif
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#define ATOMIC_DEC_NV(name, type) \
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type atomic_dec_##name##_nv(volatile type *target) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" addi %[lock],%[lock],-1\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target) \
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: "cc"); \
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\
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return lock; \
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}
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ATOMIC_DEC_NV(long, unsigned long)
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ATOMIC_DEC_NV(8, uint8_t)
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ATOMIC_DEC_NV(uchar, uchar_t)
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ATOMIC_DEC_NV(16, uint16_t)
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ATOMIC_DEC_NV(ushort, ushort_t)
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ATOMIC_DEC_NV(32, uint32_t)
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ATOMIC_DEC_NV(uint, uint_t)
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ATOMIC_DEC_NV(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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uint64_t atomic_dec_64_nv(volatile uint64_t *target)
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{
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/* XXX - Implement me */
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return (--(*target));
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}
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#endif
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#define ATOMIC_ADD_NV(name, type1, type2) \
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type1 atomic_add_##name##_nv(volatile type1 *target, type2 bits) \
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{ \
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type1 lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" add %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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\
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return lock; \
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}
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ATOMIC_ADD_NV(8, uint8_t, int8_t)
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ATOMIC_ADD_NV(char, uchar_t, signed char)
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ATOMIC_ADD_NV(16, uint16_t, int16_t)
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ATOMIC_ADD_NV(short, ushort_t, short)
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ATOMIC_ADD_NV(32, uint32_t, int32_t)
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ATOMIC_ADD_NV(int, uint_t, int)
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ATOMIC_ADD_NV(long, ulong_t, long)
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void *atomic_add_ptr_nv(volatile void *target, ssize_t bits)
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{
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/* XXX - Implement me */
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return (*(caddr_t *)target += bits);
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}
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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uint64_t atomic_add_64_nv(volatile uint64_t *target, int64_t bits)
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{
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/* XXX - Implement me */
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return (*target += bits);
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}
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#endif
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#define ATOMIC_OR_NV(name, type) \
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type atomic_or_##name##_nv(volatile type *target, type bits) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" or %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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\
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return lock; \
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}
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ATOMIC_OR_NV(long, unsigned long)
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ATOMIC_OR_NV(8, uint8_t)
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ATOMIC_OR_NV(uchar, uchar_t)
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ATOMIC_OR_NV(16, uint16_t)
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ATOMIC_OR_NV(ushort, ushort_t)
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ATOMIC_OR_NV(32, uint32_t)
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ATOMIC_OR_NV(uint, uint_t)
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ATOMIC_OR_NV(ulong, ulong_t)
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#if defined(_KERNEL) || defined(_INT64_TYPE)
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uint64_t atomic_or_64_nv(volatile uint64_t *target, uint64_t bits)
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{
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/* XXX - Implement me */
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return (*target |= bits);
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}
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#endif
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#define ATOMIC_AND_NV(name, type) \
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type atomic_and_##name##_nv(volatile type *target, type bits) \
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{ \
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type lock; \
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\
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__asm__ __volatile__( \
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"1: lwarx %[lock],0,%[target]\n" \
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" and %[lock],%[bits],%[lock]\n" \
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" stwcx. %[lock],0,%[target]\n" \
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" bne- 1b" \
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: [lock] "=&r" (lock) \
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: [target] "r" (target), [bits] "r" (bits) \
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: "cc"); \
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\
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return lock; \
|
||
|
|
}
|
||
|
|
|
||
|
|
ATOMIC_AND_NV(long, unsigned long)
|
||
|
|
ATOMIC_AND_NV(8, uint8_t)
|
||
|
|
ATOMIC_AND_NV(uchar, uchar_t)
|
||
|
|
ATOMIC_AND_NV(16, uint16_t)
|
||
|
|
ATOMIC_AND_NV(ushort, ushort_t)
|
||
|
|
ATOMIC_AND_NV(32, uint32_t)
|
||
|
|
ATOMIC_AND_NV(uint, uint_t)
|
||
|
|
ATOMIC_AND_NV(ulong, ulong_t)
|
||
|
|
|
||
|
|
#if defined(_KERNEL) || defined(_INT64_TYPE)
|
||
|
|
uint64_t atomic_and_64_nv(volatile uint64_t *target, uint64_t bits)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
return (*target &= bits);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If *arg1 == arg2, set *arg1 = arg3; return old value
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define ATOMIC_CAS(name, type) \
|
||
|
|
type atomic_cas_##name(volatile type *target, type arg1, type arg2) \
|
||
|
|
{ \
|
||
|
|
type lock, old = *target; \
|
||
|
|
\
|
||
|
|
__asm__ __volatile__( \
|
||
|
|
"1: lwarx %[lock],0,%[target]\n" \
|
||
|
|
" cmpw %[lock],%[arg1]\n" \
|
||
|
|
" bne- 2f\n" \
|
||
|
|
" mr %[lock],%[arg2]\n" \
|
||
|
|
" stwcx. %[lock],0,%[target]\n" \
|
||
|
|
" bne- 1b\n" \
|
||
|
|
"2:" \
|
||
|
|
: [lock] "=&r" (lock) \
|
||
|
|
: [target] "r" (target), [arg1] "r" (arg1), [arg2] "r" (arg2) \
|
||
|
|
: "cc"); \
|
||
|
|
\
|
||
|
|
return old; \
|
||
|
|
}
|
||
|
|
|
||
|
|
ATOMIC_CAS(8, uint8_t)
|
||
|
|
ATOMIC_CAS(uchar, uchar_t)
|
||
|
|
ATOMIC_CAS(16, uint16_t)
|
||
|
|
ATOMIC_CAS(ushort, ushort_t)
|
||
|
|
ATOMIC_CAS(32, uint32_t)
|
||
|
|
ATOMIC_CAS(uint, uint_t)
|
||
|
|
ATOMIC_CAS(ulong, ulong_t)
|
||
|
|
|
||
|
|
void *atomic_cas_ptr(volatile void *target, void *arg1, void *arg2)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
void *old = *(void **)target;
|
||
|
|
if (old == arg1)
|
||
|
|
*(void **)target = arg2;
|
||
|
|
return (old);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(_KERNEL) || defined(_INT64_TYPE)
|
||
|
|
uint64_t atomic_cas_64(volatile uint64_t *target, uint64_t arg1, uint64_t arg2)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
uint64_t old = *target;
|
||
|
|
if (old == arg1)
|
||
|
|
*target = arg2;
|
||
|
|
return (old);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Swap target and return old value
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define ATOMIC_SWAP(name, type) \
|
||
|
|
type atomic_swap_##name(volatile type *target, type bits) \
|
||
|
|
{ \
|
||
|
|
type lock, old = *target; \
|
||
|
|
\
|
||
|
|
__asm__ __volatile__( \
|
||
|
|
"1: lwarx %[lock],0,%[target]\n" \
|
||
|
|
" mr %[lock],%[bits]\n" \
|
||
|
|
" stwcx. %[lock],0,%[target]\n" \
|
||
|
|
" bne- 1b" \
|
||
|
|
: [lock] "=&r" (lock) \
|
||
|
|
: [target] "r" (target), [bits] "r" (bits) \
|
||
|
|
: "cc"); \
|
||
|
|
\
|
||
|
|
return old; \
|
||
|
|
}
|
||
|
|
|
||
|
|
ATOMIC_SWAP(8, uint8_t)
|
||
|
|
ATOMIC_SWAP(uchar, uchar_t)
|
||
|
|
ATOMIC_SWAP(16, uint16_t)
|
||
|
|
ATOMIC_SWAP(ushort, ushort_t)
|
||
|
|
ATOMIC_SWAP(32, uint32_t)
|
||
|
|
ATOMIC_SWAP(uint, uint_t)
|
||
|
|
ATOMIC_SWAP(ulong, ulong_t)
|
||
|
|
|
||
|
|
void *atomic_swap_ptr(volatile void *target, void *bits)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
void *old = *(void **)target;
|
||
|
|
*(void **)target = bits;
|
||
|
|
return (old);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(_KERNEL) || defined(_INT64_TYPE)
|
||
|
|
uint64_t atomic_swap_64(volatile uint64_t *target, uint64_t bits)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
uint64_t old = *target;
|
||
|
|
*target = bits;
|
||
|
|
return (old);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int atomic_set_long_excl(volatile ulong_t *target, uint_t value)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
ulong_t bit = (1UL << value);
|
||
|
|
if ((*target & bit) != 0)
|
||
|
|
return (-1);
|
||
|
|
*target |= bit;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
int atomic_clear_long_excl(volatile ulong_t *target, uint_t value)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
ulong_t bit = (1UL << value);
|
||
|
|
if ((*target & bit) != 0)
|
||
|
|
return (-1);
|
||
|
|
*target &= ~bit;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
void membar_enter(void)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
}
|
||
|
|
|
||
|
|
void membar_exit(void)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
}
|
||
|
|
|
||
|
|
void membar_producer(void)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
}
|
||
|
|
|
||
|
|
void membar_consumer(void)
|
||
|
|
{
|
||
|
|
/* XXX - Implement me */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Legacy kernel interfaces; they will go away (eventually). */
|
||
|
|
|
||
|
|
uint8_t cas8(uint8_t *target, uint8_t arg1, uint8_t arg2)
|
||
|
|
{
|
||
|
|
return atomic_cas_8(target, arg1, arg2);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint32_t cas32(uint32_t *target, uint32_t arg1, uint32_t arg2)
|
||
|
|
{
|
||
|
|
return atomic_cas_32(target, arg1, arg2);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t cas64(uint64_t *target, uint64_t arg1, uint64_t arg2)
|
||
|
|
{
|
||
|
|
return atomic_cas_64(target, arg1, arg2);
|
||
|
|
}
|
||
|
|
|
||
|
|
ulong_t caslong(ulong_t *target, ulong_t arg1, ulong_t arg2)
|
||
|
|
{
|
||
|
|
return atomic_cas_ulong(target, arg1, arg2);
|
||
|
|
}
|
||
|
|
|
||
|
|
void *casptr(void *target, void *arg1, void *arg2)
|
||
|
|
{
|
||
|
|
return atomic_cas_ptr(target, arg1, arg2);
|
||
|
|
}
|
||
|
|
|
||
|
|
void atomic_and_long(ulong_t *target, ulong_t bits)
|
||
|
|
{
|
||
|
|
return atomic_and_ulong(target, bits);
|
||
|
|
}
|
||
|
|
|
||
|
|
void atomic_or_long(ulong_t *target, ulong_t bits)
|
||
|
|
{
|
||
|
|
return atomic_or_ulong(target, bits);
|
||
|
|
}
|