142e6dd100
Both the SPL and the ZFS libspl export most of the atomic_* functions, except atomic_sub_* functions which are only exported by the SPL, not by libspl. This patch remedies that by implementing atomic_sub_* functions in libspl. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #1013
688 lines
12 KiB
ArmAsm
688 lines
12 KiB
ArmAsm
/*
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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 (the "License").
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* You may not use this file except in compliance 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 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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.ident "%Z%%M% %I% %E% SMI"
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.file "%M%"
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#define _ASM
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#include <ia32/sys/asm_linkage.h>
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ENTRY(atomic_inc_8)
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ALTENTRY(atomic_inc_uchar)
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lock
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incb (%rdi)
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ret
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SET_SIZE(atomic_inc_uchar)
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SET_SIZE(atomic_inc_8)
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ENTRY(atomic_inc_16)
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ALTENTRY(atomic_inc_ushort)
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lock
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incw (%rdi)
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ret
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SET_SIZE(atomic_inc_ushort)
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SET_SIZE(atomic_inc_16)
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ENTRY(atomic_inc_32)
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ALTENTRY(atomic_inc_uint)
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lock
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incl (%rdi)
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ret
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SET_SIZE(atomic_inc_uint)
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SET_SIZE(atomic_inc_32)
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ENTRY(atomic_inc_64)
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ALTENTRY(atomic_inc_ulong)
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lock
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incq (%rdi)
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ret
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SET_SIZE(atomic_inc_ulong)
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SET_SIZE(atomic_inc_64)
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ENTRY(atomic_inc_8_nv)
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ALTENTRY(atomic_inc_uchar_nv)
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movb (%rdi), %al
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1:
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leaq 1(%rax), %rcx
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_inc_uchar_nv)
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SET_SIZE(atomic_inc_8_nv)
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ENTRY(atomic_inc_16_nv)
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ALTENTRY(atomic_inc_ushort_nv)
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movw (%rdi), %ax
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1:
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leaq 1(%rax), %rcx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_inc_ushort_nv)
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SET_SIZE(atomic_inc_16_nv)
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ENTRY(atomic_inc_32_nv)
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ALTENTRY(atomic_inc_uint_nv)
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movl (%rdi), %eax
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1:
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leaq 1(%rax), %rcx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_inc_uint_nv)
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SET_SIZE(atomic_inc_32_nv)
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ENTRY(atomic_inc_64_nv)
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ALTENTRY(atomic_inc_ulong_nv)
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movq (%rdi), %rax
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1:
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leaq 1(%rax), %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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movq %rcx, %rax
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ret
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SET_SIZE(atomic_inc_ulong_nv)
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SET_SIZE(atomic_inc_64_nv)
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ENTRY(atomic_dec_8)
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ALTENTRY(atomic_dec_uchar)
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lock
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decb (%rdi)
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ret
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SET_SIZE(atomic_dec_uchar)
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SET_SIZE(atomic_dec_8)
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ENTRY(atomic_dec_16)
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ALTENTRY(atomic_dec_ushort)
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lock
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decw (%rdi)
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ret
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SET_SIZE(atomic_dec_ushort)
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SET_SIZE(atomic_dec_16)
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ENTRY(atomic_dec_32)
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ALTENTRY(atomic_dec_uint)
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lock
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decl (%rdi)
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ret
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SET_SIZE(atomic_dec_uint)
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SET_SIZE(atomic_dec_32)
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ENTRY(atomic_dec_64)
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ALTENTRY(atomic_dec_ulong)
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lock
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decq (%rdi)
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ret
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SET_SIZE(atomic_dec_ulong)
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SET_SIZE(atomic_dec_64)
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ENTRY(atomic_dec_8_nv)
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ALTENTRY(atomic_dec_uchar_nv)
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movb (%rdi), %al
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1:
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leaq -1(%rax), %rcx
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_dec_uchar_nv)
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SET_SIZE(atomic_dec_8_nv)
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ENTRY(atomic_dec_16_nv)
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ALTENTRY(atomic_dec_ushort_nv)
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movw (%rdi), %ax
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1:
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leaq -1(%rax), %rcx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_dec_ushort_nv)
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SET_SIZE(atomic_dec_16_nv)
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ENTRY(atomic_dec_32_nv)
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ALTENTRY(atomic_dec_uint_nv)
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movl (%rdi), %eax
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1:
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leaq -1(%rax), %rcx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_dec_uint_nv)
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SET_SIZE(atomic_dec_32_nv)
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ENTRY(atomic_dec_64_nv)
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ALTENTRY(atomic_dec_ulong_nv)
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movq (%rdi), %rax
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1:
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leaq -1(%rax), %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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movq %rcx, %rax
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ret
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SET_SIZE(atomic_dec_ulong_nv)
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SET_SIZE(atomic_dec_64_nv)
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ENTRY(atomic_add_8)
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ALTENTRY(atomic_add_char)
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lock
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addb %sil, (%rdi)
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ret
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SET_SIZE(atomic_add_char)
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SET_SIZE(atomic_add_8)
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ENTRY(atomic_add_16)
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ALTENTRY(atomic_add_short)
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lock
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addw %si, (%rdi)
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ret
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SET_SIZE(atomic_add_short)
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SET_SIZE(atomic_add_16)
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ENTRY(atomic_add_32)
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ALTENTRY(atomic_add_int)
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lock
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addl %esi, (%rdi)
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ret
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SET_SIZE(atomic_add_int)
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SET_SIZE(atomic_add_32)
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ENTRY(atomic_add_64)
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ALTENTRY(atomic_add_ptr)
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ALTENTRY(atomic_add_long)
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lock
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addq %rsi, (%rdi)
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ret
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SET_SIZE(atomic_add_long)
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SET_SIZE(atomic_add_ptr)
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SET_SIZE(atomic_add_64)
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ENTRY(atomic_sub_8)
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ALTENTRY(atomic_sub_char)
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lock
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subb %sil, (%rdi)
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ret
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SET_SIZE(atomic_sub_char)
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SET_SIZE(atomic_sub_8)
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ENTRY(atomic_sub_16)
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ALTENTRY(atomic_sub_short)
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lock
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subw %si, (%rdi)
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ret
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SET_SIZE(atomic_sub_short)
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SET_SIZE(atomic_sub_16)
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ENTRY(atomic_sub_32)
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ALTENTRY(atomic_sub_int)
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lock
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subl %esi, (%rdi)
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ret
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SET_SIZE(atomic_sub_int)
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SET_SIZE(atomic_sub_32)
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ENTRY(atomic_sub_64)
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ALTENTRY(atomic_sub_ptr)
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ALTENTRY(atomic_sub_long)
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lock
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subq %rsi, (%rdi)
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ret
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SET_SIZE(atomic_sub_long)
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SET_SIZE(atomic_sub_ptr)
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SET_SIZE(atomic_sub_64)
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ENTRY(atomic_or_8)
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ALTENTRY(atomic_or_uchar)
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lock
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orb %sil, (%rdi)
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ret
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SET_SIZE(atomic_or_uchar)
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SET_SIZE(atomic_or_8)
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ENTRY(atomic_or_16)
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ALTENTRY(atomic_or_ushort)
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lock
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orw %si, (%rdi)
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ret
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SET_SIZE(atomic_or_ushort)
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SET_SIZE(atomic_or_16)
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ENTRY(atomic_or_32)
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ALTENTRY(atomic_or_uint)
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lock
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orl %esi, (%rdi)
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ret
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SET_SIZE(atomic_or_uint)
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SET_SIZE(atomic_or_32)
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ENTRY(atomic_or_64)
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ALTENTRY(atomic_or_ulong)
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lock
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orq %rsi, (%rdi)
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ret
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SET_SIZE(atomic_or_ulong)
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SET_SIZE(atomic_or_64)
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ENTRY(atomic_and_8)
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ALTENTRY(atomic_and_uchar)
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lock
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andb %sil, (%rdi)
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ret
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SET_SIZE(atomic_and_uchar)
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SET_SIZE(atomic_and_8)
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ENTRY(atomic_and_16)
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ALTENTRY(atomic_and_ushort)
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lock
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andw %si, (%rdi)
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ret
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SET_SIZE(atomic_and_ushort)
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SET_SIZE(atomic_and_16)
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ENTRY(atomic_and_32)
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ALTENTRY(atomic_and_uint)
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lock
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andl %esi, (%rdi)
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ret
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SET_SIZE(atomic_and_uint)
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SET_SIZE(atomic_and_32)
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ENTRY(atomic_and_64)
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ALTENTRY(atomic_and_ulong)
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lock
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andq %rsi, (%rdi)
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ret
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SET_SIZE(atomic_and_ulong)
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SET_SIZE(atomic_and_64)
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ENTRY(atomic_add_8_nv)
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ALTENTRY(atomic_add_char_nv)
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movb (%rdi), %al
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1:
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movb %sil, %cl
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addb %al, %cl
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_add_char_nv)
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SET_SIZE(atomic_add_8_nv)
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ENTRY(atomic_add_16_nv)
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ALTENTRY(atomic_add_short_nv)
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movw (%rdi), %ax
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1:
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movw %si, %cx
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addw %ax, %cx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_add_short_nv)
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SET_SIZE(atomic_add_16_nv)
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ENTRY(atomic_add_32_nv)
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ALTENTRY(atomic_add_int_nv)
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movl (%rdi), %eax
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1:
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movl %esi, %ecx
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addl %eax, %ecx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_add_int_nv)
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SET_SIZE(atomic_add_32_nv)
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ENTRY(atomic_add_64_nv)
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ALTENTRY(atomic_add_ptr_nv)
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ALTENTRY(atomic_add_long_nv)
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movq (%rdi), %rax
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1:
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movq %rsi, %rcx
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addq %rax, %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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movq %rcx, %rax
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ret
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SET_SIZE(atomic_add_long_nv)
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SET_SIZE(atomic_add_ptr_nv)
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SET_SIZE(atomic_add_64_nv)
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ENTRY(atomic_sub_8_nv)
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ALTENTRY(atomic_sub_char_nv)
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movb (%rdi), %al
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1:
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movb %sil, %cl
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subb %al, %cl
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_sub_char_nv)
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SET_SIZE(atomic_sub_8_nv)
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ENTRY(atomic_sub_16_nv)
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ALTENTRY(atomic_sub_short_nv)
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movw (%rdi), %ax
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1:
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movw %si, %cx
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subw %ax, %cx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_sub_short_nv)
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SET_SIZE(atomic_sub_16_nv)
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ENTRY(atomic_sub_32_nv)
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ALTENTRY(atomic_sub_int_nv)
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movl (%rdi), %eax
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1:
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movl %esi, %ecx
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subl %eax, %ecx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_sub_int_nv)
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SET_SIZE(atomic_sub_32_nv)
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ENTRY(atomic_sub_64_nv)
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ALTENTRY(atomic_sub_ptr_nv)
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ALTENTRY(atomic_sub_long_nv)
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movq (%rdi), %rax
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1:
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movq %rsi, %rcx
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subq %rax, %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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movq %rcx, %rax
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ret
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SET_SIZE(atomic_sub_long_nv)
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SET_SIZE(atomic_sub_ptr_nv)
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SET_SIZE(atomic_sub_64_nv)
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ENTRY(atomic_and_8_nv)
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ALTENTRY(atomic_and_uchar_nv)
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movb (%rdi), %al
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1:
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movb %sil, %cl
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andb %al, %cl
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_and_uchar_nv)
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SET_SIZE(atomic_and_8_nv)
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ENTRY(atomic_and_16_nv)
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ALTENTRY(atomic_and_ushort_nv)
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movw (%rdi), %ax
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1:
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movw %si, %cx
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andw %ax, %cx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_and_ushort_nv)
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SET_SIZE(atomic_and_16_nv)
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ENTRY(atomic_and_32_nv)
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ALTENTRY(atomic_and_uint_nv)
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movl (%rdi), %eax
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1:
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movl %esi, %ecx
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andl %eax, %ecx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_and_uint_nv)
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SET_SIZE(atomic_and_32_nv)
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ENTRY(atomic_and_64_nv)
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ALTENTRY(atomic_and_ulong_nv)
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movq (%rdi), %rax
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1:
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movq %rsi, %rcx
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andq %rax, %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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movq %rcx, %rax
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ret
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SET_SIZE(atomic_and_ulong_nv)
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SET_SIZE(atomic_and_64_nv)
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ENTRY(atomic_or_8_nv)
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ALTENTRY(atomic_or_uchar_nv)
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movb (%rdi), %al
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1:
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movb %sil, %cl
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orb %al, %cl
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lock
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cmpxchgb %cl, (%rdi)
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jne 1b
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movzbl %cl, %eax
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ret
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SET_SIZE(atomic_and_uchar_nv)
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SET_SIZE(atomic_and_8_nv)
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ENTRY(atomic_or_16_nv)
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ALTENTRY(atomic_or_ushort_nv)
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movw (%rdi), %ax
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1:
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movw %si, %cx
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orw %ax, %cx
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lock
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cmpxchgw %cx, (%rdi)
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jne 1b
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movzwl %cx, %eax
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ret
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SET_SIZE(atomic_or_ushort_nv)
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SET_SIZE(atomic_or_16_nv)
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ENTRY(atomic_or_32_nv)
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ALTENTRY(atomic_or_uint_nv)
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movl (%rdi), %eax
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1:
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movl %esi, %ecx
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orl %eax, %ecx
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lock
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cmpxchgl %ecx, (%rdi)
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jne 1b
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movl %ecx, %eax
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ret
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SET_SIZE(atomic_or_uint_nv)
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SET_SIZE(atomic_or_32_nv)
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ENTRY(atomic_or_64_nv)
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ALTENTRY(atomic_or_ulong_nv)
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movq (%rdi), %rax
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1:
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movq %rsi, %rcx
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orq %rax, %rcx
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lock
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cmpxchgq %rcx, (%rdi)
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jne 1b
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|
movq %rcx, %rax
|
|
ret
|
|
SET_SIZE(atomic_or_ulong_nv)
|
|
SET_SIZE(atomic_or_64_nv)
|
|
|
|
ENTRY(atomic_cas_8)
|
|
ALTENTRY(atomic_cas_uchar)
|
|
movzbl %sil, %eax
|
|
lock
|
|
cmpxchgb %dl, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_cas_uchar)
|
|
SET_SIZE(atomic_cas_8)
|
|
|
|
ENTRY(atomic_cas_16)
|
|
ALTENTRY(atomic_cas_ushort)
|
|
movzwl %si, %eax
|
|
lock
|
|
cmpxchgw %dx, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_cas_ushort)
|
|
SET_SIZE(atomic_cas_16)
|
|
|
|
ENTRY(atomic_cas_32)
|
|
ALTENTRY(atomic_cas_uint)
|
|
movl %esi, %eax
|
|
lock
|
|
cmpxchgl %edx, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_cas_uint)
|
|
SET_SIZE(atomic_cas_32)
|
|
|
|
ENTRY(atomic_cas_64)
|
|
ALTENTRY(atomic_cas_ulong)
|
|
ALTENTRY(atomic_cas_ptr)
|
|
movq %rsi, %rax
|
|
lock
|
|
cmpxchgq %rdx, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_cas_ptr)
|
|
SET_SIZE(atomic_cas_ulong)
|
|
SET_SIZE(atomic_cas_64)
|
|
|
|
ENTRY(atomic_swap_8)
|
|
ALTENTRY(atomic_swap_uchar)
|
|
movzbl %sil, %eax
|
|
lock
|
|
xchgb %al, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_swap_uchar)
|
|
SET_SIZE(atomic_swap_8)
|
|
|
|
ENTRY(atomic_swap_16)
|
|
ALTENTRY(atomic_swap_ushort)
|
|
movzwl %si, %eax
|
|
lock
|
|
xchgw %ax, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_swap_ushort)
|
|
SET_SIZE(atomic_swap_16)
|
|
|
|
ENTRY(atomic_swap_32)
|
|
ALTENTRY(atomic_swap_uint)
|
|
movl %esi, %eax
|
|
lock
|
|
xchgl %eax, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_swap_uint)
|
|
SET_SIZE(atomic_swap_32)
|
|
|
|
ENTRY(atomic_swap_64)
|
|
ALTENTRY(atomic_swap_ulong)
|
|
ALTENTRY(atomic_swap_ptr)
|
|
movq %rsi, %rax
|
|
lock
|
|
xchgq %rax, (%rdi)
|
|
ret
|
|
SET_SIZE(atomic_swap_ptr)
|
|
SET_SIZE(atomic_swap_ulong)
|
|
SET_SIZE(atomic_swap_64)
|
|
|
|
ENTRY(atomic_set_long_excl)
|
|
xorl %eax, %eax
|
|
lock
|
|
btsq %rsi, (%rdi)
|
|
jnc 1f
|
|
decl %eax
|
|
1:
|
|
ret
|
|
SET_SIZE(atomic_set_long_excl)
|
|
|
|
ENTRY(atomic_clear_long_excl)
|
|
xorl %eax, %eax
|
|
lock
|
|
btrq %rsi, (%rdi)
|
|
jc 1f
|
|
decl %eax
|
|
1:
|
|
ret
|
|
SET_SIZE(atomic_clear_long_excl)
|
|
|
|
/*
|
|
* NOTE: membar_enter, and membar_exit are identical routines.
|
|
* We define them separately, instead of using an ALTENTRY
|
|
* definitions to alias them together, so that DTrace and
|
|
* debuggers will see a unique address for them, allowing
|
|
* more accurate tracing.
|
|
*/
|
|
|
|
ENTRY(membar_enter)
|
|
mfence
|
|
ret
|
|
SET_SIZE(membar_enter)
|
|
|
|
ENTRY(membar_exit)
|
|
mfence
|
|
ret
|
|
SET_SIZE(membar_exit)
|
|
|
|
ENTRY(membar_producer)
|
|
sfence
|
|
ret
|
|
SET_SIZE(membar_producer)
|
|
|
|
ENTRY(membar_consumer)
|
|
lfence
|
|
ret
|
|
SET_SIZE(membar_consumer)
|
|
|
|
#ifdef __ELF__
|
|
.section .note.GNU-stack,"",%progbits
|
|
#endif
|