diff options
Diffstat (limited to 'sys/contrib/opensolaris/uts/common/arch/i386/atomic.S')
| -rw-r--r-- | sys/contrib/opensolaris/uts/common/arch/i386/atomic.S | 659 |
1 files changed, 659 insertions, 0 deletions
diff --git a/sys/contrib/opensolaris/uts/common/arch/i386/atomic.S b/sys/contrib/opensolaris/uts/common/arch/i386/atomic.S new file mode 100644 index 000000000000..4a1d37521119 --- /dev/null +++ b/sys/contrib/opensolaris/uts/common/arch/i386/atomic.S @@ -0,0 +1,659 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2005 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + + .ident "%Z%%M% %I% %E% SMI" + + .file "%M%" + +#define _ASM +#include <sys/asm_linkage.h> + +#if defined(_KERNEL) + /* + * Legacy kernel interfaces; they will go away (eventually). + */ + ANSI_PRAGMA_WEAK2(cas8,atomic_cas_8,function) + ANSI_PRAGMA_WEAK2(cas32,atomic_cas_32,function) + ANSI_PRAGMA_WEAK2(cas64,atomic_cas_64,function) + ANSI_PRAGMA_WEAK2(caslong,atomic_cas_ulong,function) + ANSI_PRAGMA_WEAK2(casptr,atomic_cas_ptr,function) + ANSI_PRAGMA_WEAK2(atomic_and_long,atomic_and_ulong,function) + ANSI_PRAGMA_WEAK2(atomic_or_long,atomic_or_ulong,function) +#endif + + ENTRY(atomic_inc_8) + ALTENTRY(atomic_inc_uchar) + movl 4(%esp), %eax + lock + incb (%eax) + ret + SET_SIZE(atomic_inc_uchar) + SET_SIZE(atomic_inc_8) + + ENTRY(atomic_inc_16) + ALTENTRY(atomic_inc_ushort) + movl 4(%esp), %eax + lock + incw (%eax) + ret + SET_SIZE(atomic_inc_ushort) + SET_SIZE(atomic_inc_16) + + ENTRY(atomic_inc_32) + ALTENTRY(atomic_inc_uint) + ALTENTRY(atomic_inc_ulong) + movl 4(%esp), %eax + lock + incl (%eax) + ret + SET_SIZE(atomic_inc_ulong) + SET_SIZE(atomic_inc_uint) + SET_SIZE(atomic_inc_32) + + ENTRY(atomic_inc_8_nv) + ALTENTRY(atomic_inc_uchar_nv) + movl 4(%esp), %edx + movb (%edx), %al +1: + leal 1(%eax), %ecx + lock + cmpxchgb %cl, (%edx) + jne 1b + movzbl %cl, %eax + ret + SET_SIZE(atomic_inc_uchar_nv) + SET_SIZE(atomic_inc_8_nv) + + ENTRY(atomic_inc_16_nv) + ALTENTRY(atomic_inc_ushort_nv) + movl 4(%esp), %edx + movw (%edx), %ax +1: + leal 1(%eax), %ecx + lock + cmpxchgw %cx, (%edx) + jne 1b + movzwl %cx, %eax + ret + SET_SIZE(atomic_inc_ushort_nv) + SET_SIZE(atomic_inc_16_nv) + + ENTRY(atomic_inc_32_nv) + ALTENTRY(atomic_inc_uint_nv) + ALTENTRY(atomic_inc_ulong_nv) + movl 4(%esp), %edx + movl (%edx), %eax +1: + leal 1(%eax), %ecx + lock + cmpxchgl %ecx, (%edx) + jne 1b + movl %ecx, %eax + ret + SET_SIZE(atomic_inc_ulong_nv) + SET_SIZE(atomic_inc_uint_nv) + SET_SIZE(atomic_inc_32_nv) + + ENTRY(atomic_inc_64) + ALTENTRY(atomic_inc_64_nv) + pushl %edi + pushl %ebx + movl 12(%esp), %edi + movl (%edi), %eax + movl 4(%edi), %edx +1: + xorl %ebx, %ebx + xorl %ecx, %ecx + incl %ebx + addl %eax, %ebx + adcl %edx, %ecx + lock + cmpxchg8b (%edi) + jne 1b + movl %ebx, %eax + movl %ecx, %edx + popl %ebx + popl %edi + ret + SET_SIZE(atomic_inc_64_nv) + SET_SIZE(atomic_inc_64) + + ENTRY(atomic_dec_8) + ALTENTRY(atomic_dec_uchar) + movl 4(%esp), %eax + lock + decb (%eax) + ret + SET_SIZE(atomic_dec_uchar) + SET_SIZE(atomic_dec_8) + + ENTRY(atomic_dec_16) + ALTENTRY(atomic_dec_ushort) + movl 4(%esp), %eax + lock + decw (%eax) + ret + SET_SIZE(atomic_dec_ushort) + SET_SIZE(atomic_dec_16) + + ENTRY(atomic_dec_32) + ALTENTRY(atomic_dec_uint) + ALTENTRY(atomic_dec_ulong) + movl 4(%esp), %eax + lock + decl (%eax) + ret + SET_SIZE(atomic_dec_ulong) + SET_SIZE(atomic_dec_uint) + SET_SIZE(atomic_dec_32) + + ENTRY(atomic_dec_8_nv) + ALTENTRY(atomic_dec_uchar_nv) + movl 4(%esp), %edx + movb (%edx), %al +1: + leal -1(%eax), %ecx + lock + cmpxchgb %cl, (%edx) + jne 1b + movzbl %cl, %eax + ret + SET_SIZE(atomic_dec_uchar_nv) + SET_SIZE(atomic_dec_8_nv) + + ENTRY(atomic_dec_16_nv) + ALTENTRY(atomic_dec_ushort_nv) + movl 4(%esp), %edx + movw (%edx), %ax +1: + leal -1(%eax), %ecx + lock + cmpxchgw %cx, (%edx) + jne 1b + movzwl %cx, %eax + ret + SET_SIZE(atomic_dec_ushort_nv) + SET_SIZE(atomic_dec_16_nv) + + ENTRY(atomic_dec_32_nv) + ALTENTRY(atomic_dec_uint_nv) + ALTENTRY(atomic_dec_ulong_nv) + movl 4(%esp), %edx + movl (%edx), %eax +1: + leal -1(%eax), %ecx + lock + cmpxchgl %ecx, (%edx) + jne 1b + movl %ecx, %eax + ret + SET_SIZE(atomic_dec_ulong_nv) + SET_SIZE(atomic_dec_uint_nv) + SET_SIZE(atomic_dec_32_nv) + + ENTRY(atomic_dec_64) + ALTENTRY(atomic_dec_64_nv) + pushl %edi + pushl %ebx + movl 12(%esp), %edi + movl (%edi), %eax + movl 4(%edi), %edx +1: + xorl %ebx, %ebx + xorl %ecx, %ecx + not %ecx + not %ebx + addl %eax, %ebx + adcl %edx, %ecx + lock + cmpxchg8b (%edi) + jne 1b + movl %ebx, %eax + movl %ecx, %edx + popl %ebx + popl %edi + ret + SET_SIZE(atomic_dec_64_nv) + SET_SIZE(atomic_dec_64) + + ENTRY(atomic_or_8) + ALTENTRY(atomic_or_uchar) + movl 4(%esp), %eax + movb 8(%esp), %cl + lock + orb %cl, (%eax) + ret + SET_SIZE(atomic_or_uchar) + SET_SIZE(atomic_or_8) + + ENTRY(atomic_or_16) + ALTENTRY(atomic_or_ushort) + movl 4(%esp), %eax + movw 8(%esp), %cx + lock + orw %cx, (%eax) + ret + SET_SIZE(atomic_or_ushort) + SET_SIZE(atomic_or_16) + + ENTRY(atomic_or_32) + ALTENTRY(atomic_or_uint) + ALTENTRY(atomic_or_ulong) + movl 4(%esp), %eax + movl 8(%esp), %ecx + lock + orl %ecx, (%eax) + ret + SET_SIZE(atomic_or_ulong) + SET_SIZE(atomic_or_uint) + SET_SIZE(atomic_or_32) + + ENTRY(atomic_and_8) + ALTENTRY(atomic_and_uchar) + movl 4(%esp), %eax + movb 8(%esp), %cl + lock + andb %cl, (%eax) + ret + SET_SIZE(atomic_and_uchar) + SET_SIZE(atomic_and_8) + + ENTRY(atomic_and_16) + ALTENTRY(atomic_and_ushort) + movl 4(%esp), %eax + movw 8(%esp), %cx + lock + andw %cx, (%eax) + ret + SET_SIZE(atomic_and_ushort) + SET_SIZE(atomic_and_16) + + ENTRY(atomic_and_32) + ALTENTRY(atomic_and_uint) + ALTENTRY(atomic_and_ulong) + movl 4(%esp), %eax + movl 8(%esp), %ecx + lock + andl %ecx, (%eax) + ret + SET_SIZE(atomic_and_ulong) + SET_SIZE(atomic_and_uint) + SET_SIZE(atomic_and_32) + + ENTRY(atomic_add_8_nv) + ALTENTRY(atomic_add_char_nv) + movl 4(%esp), %edx + movb (%edx), %al +1: + movl 8(%esp), %ecx + addb %al, %cl + lock + cmpxchgb %cl, (%edx) + jne 1b + movzbl %cl, %eax + ret + SET_SIZE(atomic_add_char_nv) + SET_SIZE(atomic_add_8_nv) + + ENTRY(atomic_add_16_nv) + ALTENTRY(atomic_add_short_nv) + movl 4(%esp), %edx + movw (%edx), %ax +1: + movl 8(%esp), %ecx + addw %ax, %cx + lock + cmpxchgw %cx, (%edx) + jne 1b + movzwl %cx, %eax + ret + SET_SIZE(atomic_add_short_nv) + SET_SIZE(atomic_add_16_nv) + + ENTRY(atomic_add_32_nv) + ALTENTRY(atomic_add_int_nv) + ALTENTRY(atomic_add_ptr_nv) + ALTENTRY(atomic_add_long_nv) + movl 4(%esp), %edx + movl (%edx), %eax +1: + movl 8(%esp), %ecx + addl %eax, %ecx + lock + cmpxchgl %ecx, (%edx) + jne 1b + movl %ecx, %eax + ret + SET_SIZE(atomic_add_long_nv) + SET_SIZE(atomic_add_ptr_nv) + SET_SIZE(atomic_add_int_nv) + SET_SIZE(atomic_add_32_nv) + + ENTRY(atomic_add_64) + ALTENTRY(atomic_add_64_nv) + pushl %edi + pushl %ebx + movl 12(%esp), %edi + movl (%edi), %eax + movl 4(%edi), %edx +1: + movl 16(%esp), %ebx + movl 20(%esp), %ecx + addl %eax, %ebx + adcl %edx, %ecx + lock + cmpxchg8b (%edi) + jne 1b + movl %ebx, %eax + movl %ecx, %edx + popl %ebx + popl %edi + ret + SET_SIZE(atomic_add_64_nv) + SET_SIZE(atomic_add_64) + + ENTRY(atomic_or_8_nv) + ALTENTRY(atomic_or_uchar_nv) + movl 4(%esp), %edx + movb (%edx), %al +1: + movl 8(%esp), %ecx + orb %al, %cl + lock + cmpxchgb %cl, (%edx) + jne 1b + movzbl %cl, %eax + ret + SET_SIZE(atomic_or_uchar_nv) + SET_SIZE(atomic_or_8_nv) + + ENTRY(atomic_or_16_nv) + ALTENTRY(atomic_or_ushort_nv) + movl 4(%esp), %edx + movw (%edx), %ax +1: + movl 8(%esp), %ecx + orw %ax, %cx + lock + cmpxchgw %cx, (%edx) + jne 1b + movzwl %cx, %eax + ret + SET_SIZE(atomic_or_ushort_nv) + SET_SIZE(atomic_or_16_nv) + + ENTRY(atomic_or_32_nv) + ALTENTRY(atomic_or_uint_nv) + ALTENTRY(atomic_or_ulong_nv) + movl 4(%esp), %edx + movl (%edx), %eax +1: + movl 8(%esp), %ecx + orl %eax, %ecx + lock + cmpxchgl %ecx, (%edx) + jne 1b + movl %ecx, %eax + ret + SET_SIZE(atomic_or_ulong_nv) + SET_SIZE(atomic_or_uint_nv) + SET_SIZE(atomic_or_32_nv) + + ENTRY(atomic_or_64) + ALTENTRY(atomic_or_64_nv) + pushl %edi + pushl %ebx + movl 12(%esp), %edi + movl (%edi), %eax + movl 4(%edi), %edx +1: + movl 16(%esp), %ebx + movl 20(%esp), %ecx + orl %eax, %ebx + orl %edx, %ecx + lock + cmpxchg8b (%edi) + jne 1b + movl %ebx, %eax + movl %ecx, %edx + popl %ebx + popl %edi + ret + SET_SIZE(atomic_or_64_nv) + SET_SIZE(atomic_or_64) + + ENTRY(atomic_and_8_nv) + ALTENTRY(atomic_and_uchar_nv) + movl 4(%esp), %edx + movb (%edx), %al +1: + movl 8(%esp), %ecx + andb %al, %cl + lock + cmpxchgb %cl, (%edx) + jne 1b + movzbl %cl, %eax + ret + SET_SIZE(atomic_and_uchar_nv) + SET_SIZE(atomic_and_8_nv) + + ENTRY(atomic_and_16_nv) + ALTENTRY(atomic_and_ushort_nv) + movl 4(%esp), %edx + movw (%edx), %ax +1: + movl 8(%esp), %ecx + andw %ax, %cx + lock + cmpxchgw %cx, (%edx) + jne 1b + movzwl %cx, %eax + ret + SET_SIZE(atomic_and_ushort_nv) + SET_SIZE(atomic_and_16_nv) + + ENTRY(atomic_and_32_nv) + ALTENTRY(atomic_and_uint_nv) + ALTENTRY(atomic_and_ulong_nv) + movl 4(%esp), %edx + movl (%edx), %eax +1: + movl 8(%esp), %ecx + andl %eax, %ecx + lock + cmpxchgl %ecx, (%edx) + jne 1b + movl %ecx, %eax + ret + SET_SIZE(atomic_and_ulong_nv) + SET_SIZE(atomic_and_uint_nv) + SET_SIZE(atomic_and_32_nv) + + ENTRY(atomic_and_64) + ALTENTRY(atomic_and_64_nv) + pushl %edi + pushl %ebx + movl 12(%esp), %edi + movl (%edi), %eax + movl 4(%edi), %edx +1: + movl 16(%esp), %ebx + movl 20(%esp), %ecx + andl %eax, %ebx + andl %edx, %ecx + lock + cmpxchg8b (%edi) + jne 1b + movl %ebx, %eax + movl %ecx, %edx + popl %ebx + popl %edi + ret + SET_SIZE(atomic_and_64_nv) + SET_SIZE(atomic_and_64) + + ENTRY(atomic_cas_8) + ALTENTRY(atomic_cas_uchar) + movl 4(%esp), %edx + movzbl 8(%esp), %eax + movb 12(%esp), %cl + lock + cmpxchgb %cl, (%edx) + ret + SET_SIZE(atomic_cas_uchar) + SET_SIZE(atomic_cas_8) + + ENTRY(atomic_cas_16) + ALTENTRY(atomic_cas_ushort) + movl 4(%esp), %edx + movzwl 8(%esp), %eax + movw 12(%esp), %cx + lock + cmpxchgw %cx, (%edx) + ret + SET_SIZE(atomic_cas_ushort) + SET_SIZE(atomic_cas_16) + + ENTRY(atomic_cas_32) + ALTENTRY(atomic_cas_uint) + ALTENTRY(atomic_cas_ulong) + ALTENTRY(atomic_cas_ptr) + movl 4(%esp), %edx + movl 8(%esp), %eax + movl 12(%esp), %ecx + lock + cmpxchgl %ecx, (%edx) + ret + SET_SIZE(atomic_cas_ptr) + SET_SIZE(atomic_cas_ulong) + SET_SIZE(atomic_cas_uint) + SET_SIZE(atomic_cas_32) + + ENTRY(atomic_cas_64) + pushl %ebx + pushl %esi + movl 12(%esp), %esi + movl 16(%esp), %eax + movl 20(%esp), %edx + movl 24(%esp), %ebx + movl 28(%esp), %ecx + lock + cmpxchg8b (%esi) + popl %esi + popl %ebx + ret + SET_SIZE(atomic_cas_64) + + ENTRY(atomic_swap_8) + ALTENTRY(atomic_swap_uchar) + movl 4(%esp), %edx + movzbl 8(%esp), %eax + lock + xchgb %al, (%edx) + ret + SET_SIZE(atomic_swap_uchar) + SET_SIZE(atomic_swap_8) + + ENTRY(atomic_swap_16) + ALTENTRY(atomic_swap_ushort) + movl 4(%esp), %edx + movzwl 8(%esp), %eax + lock + xchgw %ax, (%edx) + ret + SET_SIZE(atomic_swap_ushort) + SET_SIZE(atomic_swap_16) + + ENTRY(atomic_swap_32) + ALTENTRY(atomic_swap_uint) + ALTENTRY(atomic_swap_ptr) + ALTENTRY(atomic_swap_ulong) + movl 4(%esp), %edx + movl 8(%esp), %eax + lock + xchgl %eax, (%edx) + ret + SET_SIZE(atomic_swap_ulong) + SET_SIZE(atomic_swap_ptr) + SET_SIZE(atomic_swap_uint) + SET_SIZE(atomic_swap_32) + + ENTRY(atomic_swap_64) + pushl %esi + pushl %ebx + movl 12(%esp), %esi + movl 16(%esp), %ebx + movl 20(%esp), %ecx + movl (%esi), %eax + movl 4(%esi), %edx +1: + lock + cmpxchg8b (%esi) + jne 1b + popl %ebx + popl %esi + ret + SET_SIZE(atomic_swap_64) + + ENTRY(atomic_set_long_excl) + movl 4(%esp), %edx + movl 8(%esp), %ecx + xorl %eax, %eax + lock + btsl %ecx, (%edx) + jnc 1f + decl %eax +1: + ret + SET_SIZE(atomic_set_long_excl) + + ENTRY(atomic_clear_long_excl) + movl 4(%esp), %edx + movl 8(%esp), %ecx + xorl %eax, %eax + lock + btrl %ecx, (%edx) + jc 1f + decl %eax +1: + ret + SET_SIZE(atomic_clear_long_excl) + + ENTRY(membar_enter) + ALTENTRY(membar_exit) + ALTENTRY(membar_producer) + ALTENTRY(membar_consumer) + lock + xorl $0, (%esp) + ret + SET_SIZE(membar_consumer) + SET_SIZE(membar_producer) + SET_SIZE(membar_exit) + SET_SIZE(membar_enter) + +#ifdef __ELF__ +.section .note.GNU-stack,"",%progbits +#endif |