10565
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#
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# Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
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#ifdef __APPLE__
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# Darwin uses _ prefixed global symbols
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#define SYMBOL(s) _ ## s
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#define ELF_TYPE(name, description)
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#else
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#define SYMBOL(s) s
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#define ELF_TYPE(name, description) .type name,description
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#endif
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.globl SYMBOL(fixcw)
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# NOTE WELL! The _Copy functions are called directly
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# from server-compiler-generated code via CallLeafNoFP,
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# which means that they *must* either not use floating
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# point or use it in the same manner as does the server
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# compiler.
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.globl SYMBOL(_Copy_conjoint_bytes)
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.globl SYMBOL(_Copy_arrayof_conjoint_bytes)
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.globl SYMBOL(_Copy_conjoint_jshorts_atomic)
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.globl SYMBOL(_Copy_arrayof_conjoint_jshorts)
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.globl SYMBOL(_Copy_conjoint_jints_atomic)
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.globl SYMBOL(_Copy_arrayof_conjoint_jints)
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.globl SYMBOL(_Copy_conjoint_jlongs_atomic)
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.globl SYMBOL(_mmx_Copy_arrayof_conjoint_jshorts)
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.globl SYMBOL(_Atomic_cmpxchg_long)
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.globl SYMBOL(_Atomic_move_long)
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.text
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# Support for void os::Solaris::init_thread_fpu_state() in os_solaris_i486.cpp
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# Set fpu to 53 bit precision. This happens too early to use a stub.
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# ported from solaris_x86_32.s
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.p2align 4,,15
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SYMBOL(fixcw):
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pushl $0x27f
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fldcw 0(%esp)
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popl %eax
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ret
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.globl SYMBOL(SafeFetch32), SYMBOL(Fetch32PFI), SYMBOL(Fetch32Resume)
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.globl SYMBOL(SafeFetchN)
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## TODO: avoid exposing Fetch32PFI and Fetch32Resume.
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## Instead, the signal handler would call a new SafeFetchTriage(FaultingEIP)
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## routine to vet the address. If the address is the faulting LD then
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## SafeFetchTriage() would return the resume-at EIP, otherwise null.
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ELF_TYPE(SafeFetch32,@function)
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.p2align 4,,15
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SYMBOL(SafeFetch32):
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SYMBOL(SafeFetchN):
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movl 0x8(%esp), %eax
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movl 0x4(%esp), %ecx
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SYMBOL(Fetch32PFI):
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movl (%ecx), %eax
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SYMBOL(Fetch32Resume):
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ret
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.globl SYMBOL(SpinPause)
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ELF_TYPE(SpinPause,@function)
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.p2align 4,,15
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SYMBOL(SpinPause):
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rep
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nop
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movl $1, %eax
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ret
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# Support for void Copy::conjoint_bytes(void* from,
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# void* to,
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# size_t count)
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.p2align 4,,15
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ELF_TYPE(_Copy_conjoint_bytes,@function)
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SYMBOL(_Copy_conjoint_bytes):
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pushl %esi
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movl 4+12(%esp),%ecx # count
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pushl %edi
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movl 8+ 4(%esp),%esi # from
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movl 8+ 8(%esp),%edi # to
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cmpl %esi,%edi
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leal -1(%esi,%ecx),%eax # from + count - 1
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jbe cb_CopyRight
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cmpl %eax,%edi
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jbe cb_CopyLeft
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# copy from low to high
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cb_CopyRight:
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cmpl $3,%ecx
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jbe 5f # <= 3 bytes
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# align source address at dword address boundary
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movl %ecx,%eax # original count
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movl $4,%ecx
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subl %esi,%ecx
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andl $3,%ecx # prefix byte count
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jz 1f # no prefix
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subl %ecx,%eax # byte count less prefix
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# copy prefix
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subl %esi,%edi
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0: movb (%esi),%dl
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movb %dl,(%edi,%esi,1)
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addl $1,%esi
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subl $1,%ecx
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jnz 0b
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addl %esi,%edi
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1: movl %eax,%ecx # byte count less prefix
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shrl $2,%ecx # dword count
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jz 4f # no dwords to move
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cmpl $32,%ecx
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jbe 2f # <= 32 dwords
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# copy aligned dwords
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rep; smovl
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jmp 4f
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# copy aligned dwords
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2: subl %esi,%edi
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.p2align 4,,15
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3: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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addl $4,%esi
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subl $1,%ecx
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jnz 3b
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addl %esi,%edi
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4: movl %eax,%ecx # byte count less prefix
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5: andl $3,%ecx # suffix byte count
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jz 7f # no suffix
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# copy suffix
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xorl %eax,%eax
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6: movb (%esi,%eax,1),%dl
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movb %dl,(%edi,%eax,1)
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addl $1,%eax
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subl $1,%ecx
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jnz 6b
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7: popl %edi
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popl %esi
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ret
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# copy from high to low
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cb_CopyLeft:
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std
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leal -4(%edi,%ecx),%edi # to + count - 4
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movl %eax,%esi # from + count - 1
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movl %ecx,%eax
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subl $3,%esi # from + count - 4
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cmpl $3,%ecx
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jbe 5f # <= 3 bytes
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1: shrl $2,%ecx # dword count
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jz 4f # no dwords to move
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cmpl $32,%ecx
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ja 3f # > 32 dwords
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# copy dwords, aligned or not
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subl %esi,%edi
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.p2align 4,,15
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2: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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subl $4,%esi
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subl $1,%ecx
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jnz 2b
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addl %esi,%edi
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jmp 4f
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# copy dwords, aligned or not
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3: rep; smovl
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4: movl %eax,%ecx # byte count
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5: andl $3,%ecx # suffix byte count
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jz 7f # no suffix
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# copy suffix
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subl %esi,%edi
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addl $3,%esi
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6: movb (%esi),%dl
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movb %dl,(%edi,%esi,1)
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subl $1,%esi
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subl $1,%ecx
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jnz 6b
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7: cld
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popl %edi
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popl %esi
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ret
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# Support for void Copy::arrayof_conjoint_bytes(void* from,
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# void* to,
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# size_t count)
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#
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# Same as _Copy_conjoint_bytes, except no source alignment check.
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.p2align 4,,15
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ELF_TYPE(_Copy_arrayof_conjoint_bytes,@function)
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SYMBOL(_Copy_arrayof_conjoint_bytes):
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pushl %esi
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movl 4+12(%esp),%ecx # count
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pushl %edi
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movl 8+ 4(%esp),%esi # from
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movl 8+ 8(%esp),%edi # to
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cmpl %esi,%edi
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leal -1(%esi,%ecx),%eax # from + count - 1
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jbe acb_CopyRight
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cmpl %eax,%edi
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jbe acb_CopyLeft
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# copy from low to high
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acb_CopyRight:
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cmpl $3,%ecx
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jbe 5f
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1: movl %ecx,%eax
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shrl $2,%ecx
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jz 4f
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cmpl $32,%ecx
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ja 3f
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# copy aligned dwords
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subl %esi,%edi
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.p2align 4,,15
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2: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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addl $4,%esi
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subl $1,%ecx
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jnz 2b
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addl %esi,%edi
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jmp 4f
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# copy aligned dwords
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3: rep; smovl
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4: movl %eax,%ecx
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5: andl $3,%ecx
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jz 7f
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# copy suffix
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xorl %eax,%eax
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6: movb (%esi,%eax,1),%dl
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movb %dl,(%edi,%eax,1)
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addl $1,%eax
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subl $1,%ecx
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jnz 6b
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7: popl %edi
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popl %esi
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ret
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acb_CopyLeft:
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std
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leal -4(%edi,%ecx),%edi # to + count - 4
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movl %eax,%esi # from + count - 1
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movl %ecx,%eax
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subl $3,%esi # from + count - 4
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cmpl $3,%ecx
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jbe 5f
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1: shrl $2,%ecx
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jz 4f
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cmpl $32,%ecx
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jbe 2f # <= 32 dwords
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rep; smovl
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jmp 4f
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.=.+8
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2: subl %esi,%edi
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.p2align 4,,15
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3: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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subl $4,%esi
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subl $1,%ecx
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jnz 3b
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addl %esi,%edi
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4: movl %eax,%ecx
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5: andl $3,%ecx
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jz 7f
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subl %esi,%edi
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addl $3,%esi
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6: movb (%esi),%dl
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movb %dl,(%edi,%esi,1)
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subl $1,%esi
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subl $1,%ecx
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jnz 6b
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7: cld
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popl %edi
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popl %esi
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ret
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# Support for void Copy::conjoint_jshorts_atomic(void* from,
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# void* to,
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# size_t count)
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.p2align 4,,15
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ELF_TYPE(_Copy_conjoint_jshorts_atomic,@function)
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SYMBOL(_Copy_conjoint_jshorts_atomic):
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pushl %esi
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movl 4+12(%esp),%ecx # count
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pushl %edi
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movl 8+ 4(%esp),%esi # from
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movl 8+ 8(%esp),%edi # to
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cmpl %esi,%edi
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leal -2(%esi,%ecx,2),%eax # from + count*2 - 2
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jbe cs_CopyRight
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cmpl %eax,%edi
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jbe cs_CopyLeft
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# copy from low to high
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cs_CopyRight:
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# align source address at dword address boundary
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movl %esi,%eax # original from
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andl $3,%eax # either 0 or 2
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jz 1f # no prefix
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# copy prefix
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subl $1,%ecx
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jl 5f # zero count
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movw (%esi),%dx
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movw %dx,(%edi)
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addl %eax,%esi # %eax == 2
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addl %eax,%edi
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1: movl %ecx,%eax # word count less prefix
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sarl %ecx # dword count
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jz 4f # no dwords to move
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cmpl $32,%ecx
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jbe 2f # <= 32 dwords
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# copy aligned dwords
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rep; smovl
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jmp 4f
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# copy aligned dwords
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2: subl %esi,%edi
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.p2align 4,,15
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3: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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addl $4,%esi
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subl $1,%ecx
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jnz 3b
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addl %esi,%edi
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4: andl $1,%eax # suffix count
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jz 5f # no suffix
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# copy suffix
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movw (%esi),%dx
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movw %dx,(%edi)
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5: popl %edi
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popl %esi
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ret
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# copy from high to low
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cs_CopyLeft:
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std
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leal -4(%edi,%ecx,2),%edi # to + count*2 - 4
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movl %eax,%esi # from + count*2 - 2
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movl %ecx,%eax
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subl $2,%esi # from + count*2 - 4
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1: sarl %ecx # dword count
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jz 4f # no dwords to move
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cmpl $32,%ecx
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ja 3f # > 32 dwords
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subl %esi,%edi
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.p2align 4,,15
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2: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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subl $4,%esi
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subl $1,%ecx
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jnz 2b
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addl %esi,%edi
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jmp 4f
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3: rep; smovl
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4: andl $1,%eax # suffix count
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jz 5f # no suffix
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# copy suffix
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addl $2,%esi
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addl $2,%edi
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movw (%esi),%dx
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movw %dx,(%edi)
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5: cld
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popl %edi
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popl %esi
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ret
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# Support for void Copy::arrayof_conjoint_jshorts(void* from,
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# void* to,
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# size_t count)
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.p2align 4,,15
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ELF_TYPE(_Copy_arrayof_conjoint_jshorts,@function)
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SYMBOL(_Copy_arrayof_conjoint_jshorts):
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pushl %esi
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movl 4+12(%esp),%ecx # count
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pushl %edi
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movl 8+ 4(%esp),%esi # from
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movl 8+ 8(%esp),%edi # to
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cmpl %esi,%edi
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leal -2(%esi,%ecx,2),%eax # from + count*2 - 2
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jbe acs_CopyRight
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cmpl %eax,%edi
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jbe acs_CopyLeft
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acs_CopyRight:
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movl %ecx,%eax # word count
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sarl %ecx # dword count
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jz 4f # no dwords to move
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cmpl $32,%ecx
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jbe 2f # <= 32 dwords
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# copy aligned dwords
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rep; smovl
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jmp 4f
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401 |
# copy aligned dwords
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.=.+5
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2: subl %esi,%edi
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.p2align 4,,15
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405 |
3: movl (%esi),%edx
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movl %edx,(%edi,%esi,1)
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addl $4,%esi
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subl $1,%ecx
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409 |
jnz 3b
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410 |
addl %esi,%edi
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411 |
4: andl $1,%eax # suffix count
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|
412 |
jz 5f # no suffix
|
|
413 |
# copy suffix
|
|
414 |
movw (%esi),%dx
|
|
415 |
movw %dx,(%edi)
|
|
416 |
5: popl %edi
|
|
417 |
popl %esi
|
|
418 |
ret
|
|
419 |
acs_CopyLeft:
|
|
420 |
std
|
|
421 |
leal -4(%edi,%ecx,2),%edi # to + count*2 - 4
|
|
422 |
movl %eax,%esi # from + count*2 - 2
|
|
423 |
movl %ecx,%eax
|
|
424 |
subl $2,%esi # from + count*2 - 4
|
|
425 |
sarl %ecx # dword count
|
|
426 |
jz 4f # no dwords to move
|
|
427 |
cmpl $32,%ecx
|
|
428 |
ja 3f # > 32 dwords
|
|
429 |
subl %esi,%edi
|
|
430 |
.p2align 4,,15
|
|
431 |
2: movl (%esi),%edx
|
|
432 |
movl %edx,(%edi,%esi,1)
|
|
433 |
subl $4,%esi
|
|
434 |
subl $1,%ecx
|
|
435 |
jnz 2b
|
|
436 |
addl %esi,%edi
|
|
437 |
jmp 4f
|
|
438 |
3: rep; smovl
|
|
439 |
4: andl $1,%eax # suffix count
|
|
440 |
jz 5f # no suffix
|
|
441 |
# copy suffix
|
|
442 |
addl $2,%esi
|
|
443 |
addl $2,%edi
|
|
444 |
movw (%esi),%dx
|
|
445 |
movw %dx,(%edi)
|
|
446 |
5: cld
|
|
447 |
popl %edi
|
|
448 |
popl %esi
|
|
449 |
ret
|
|
450 |
|
|
451 |
# Support for void Copy::conjoint_jints_atomic(void* from,
|
|
452 |
# void* to,
|
|
453 |
# size_t count)
|
|
454 |
# Equivalent to
|
|
455 |
# arrayof_conjoint_jints
|
|
456 |
.p2align 4,,15
|
|
457 |
ELF_TYPE(_Copy_conjoint_jints_atomic,@function)
|
|
458 |
ELF_TYPE(_Copy_arrayof_conjoint_jints,@function)
|
|
459 |
SYMBOL(_Copy_conjoint_jints_atomic):
|
|
460 |
SYMBOL(_Copy_arrayof_conjoint_jints):
|
|
461 |
pushl %esi
|
|
462 |
movl 4+12(%esp),%ecx # count
|
|
463 |
pushl %edi
|
|
464 |
movl 8+ 4(%esp),%esi # from
|
|
465 |
movl 8+ 8(%esp),%edi # to
|
|
466 |
cmpl %esi,%edi
|
|
467 |
leal -4(%esi,%ecx,4),%eax # from + count*4 - 4
|
|
468 |
jbe ci_CopyRight
|
|
469 |
cmpl %eax,%edi
|
|
470 |
jbe ci_CopyLeft
|
|
471 |
ci_CopyRight:
|
|
472 |
cmpl $32,%ecx
|
|
473 |
jbe 2f # <= 32 dwords
|
|
474 |
rep; smovl
|
|
475 |
popl %edi
|
|
476 |
popl %esi
|
|
477 |
ret
|
|
478 |
.=.+10
|
|
479 |
2: subl %esi,%edi
|
|
480 |
jmp 4f
|
|
481 |
.p2align 4,,15
|
|
482 |
3: movl (%esi),%edx
|
|
483 |
movl %edx,(%edi,%esi,1)
|
|
484 |
addl $4,%esi
|
|
485 |
4: subl $1,%ecx
|
|
486 |
jge 3b
|
|
487 |
popl %edi
|
|
488 |
popl %esi
|
|
489 |
ret
|
|
490 |
ci_CopyLeft:
|
|
491 |
std
|
|
492 |
leal -4(%edi,%ecx,4),%edi # to + count*4 - 4
|
|
493 |
cmpl $32,%ecx
|
|
494 |
ja 4f # > 32 dwords
|
|
495 |
subl %eax,%edi # eax == from + count*4 - 4
|
|
496 |
jmp 3f
|
|
497 |
.p2align 4,,15
|
|
498 |
2: movl (%eax),%edx
|
|
499 |
movl %edx,(%edi,%eax,1)
|
|
500 |
subl $4,%eax
|
|
501 |
3: subl $1,%ecx
|
|
502 |
jge 2b
|
|
503 |
cld
|
|
504 |
popl %edi
|
|
505 |
popl %esi
|
|
506 |
ret
|
|
507 |
4: movl %eax,%esi # from + count*4 - 4
|
|
508 |
rep; smovl
|
|
509 |
cld
|
|
510 |
popl %edi
|
|
511 |
popl %esi
|
|
512 |
ret
|
|
513 |
|
|
514 |
# Support for void Copy::conjoint_jlongs_atomic(jlong* from,
|
|
515 |
# jlong* to,
|
|
516 |
# size_t count)
|
|
517 |
#
|
|
518 |
# 32-bit
|
|
519 |
#
|
|
520 |
# count treated as signed
|
|
521 |
#
|
|
522 |
# // if (from > to) {
|
|
523 |
# while (--count >= 0) {
|
|
524 |
# *to++ = *from++;
|
|
525 |
# }
|
|
526 |
# } else {
|
|
527 |
# while (--count >= 0) {
|
|
528 |
# to[count] = from[count];
|
|
529 |
# }
|
|
530 |
# }
|
|
531 |
.p2align 4,,15
|
|
532 |
ELF_TYPE(_Copy_conjoint_jlongs_atomic,@function)
|
|
533 |
SYMBOL(_Copy_conjoint_jlongs_atomic):
|
|
534 |
movl 4+8(%esp),%ecx # count
|
|
535 |
movl 4+0(%esp),%eax # from
|
|
536 |
movl 4+4(%esp),%edx # to
|
|
537 |
cmpl %eax,%edx
|
|
538 |
jae cla_CopyLeft
|
|
539 |
cla_CopyRight:
|
|
540 |
subl %eax,%edx
|
|
541 |
jmp 2f
|
|
542 |
.p2align 4,,15
|
|
543 |
1: fildll (%eax)
|
|
544 |
fistpll (%edx,%eax,1)
|
|
545 |
addl $8,%eax
|
|
546 |
2: subl $1,%ecx
|
|
547 |
jge 1b
|
|
548 |
ret
|
|
549 |
.p2align 4,,15
|
|
550 |
3: fildll (%eax,%ecx,8)
|
|
551 |
fistpll (%edx,%ecx,8)
|
|
552 |
cla_CopyLeft:
|
|
553 |
subl $1,%ecx
|
|
554 |
jge 3b
|
|
555 |
ret
|
|
556 |
|
|
557 |
# Support for void Copy::arrayof_conjoint_jshorts(void* from,
|
|
558 |
# void* to,
|
|
559 |
# size_t count)
|
|
560 |
.p2align 4,,15
|
|
561 |
ELF_TYPE(_mmx_Copy_arrayof_conjoint_jshorts,@function)
|
|
562 |
SYMBOL(_mmx_Copy_arrayof_conjoint_jshorts):
|
|
563 |
pushl %esi
|
|
564 |
movl 4+12(%esp),%ecx
|
|
565 |
pushl %edi
|
|
566 |
movl 8+ 4(%esp),%esi
|
|
567 |
movl 8+ 8(%esp),%edi
|
|
568 |
cmpl %esi,%edi
|
|
569 |
leal -2(%esi,%ecx,2),%eax
|
|
570 |
jbe mmx_acs_CopyRight
|
|
571 |
cmpl %eax,%edi
|
|
572 |
jbe mmx_acs_CopyLeft
|
|
573 |
mmx_acs_CopyRight:
|
|
574 |
movl %ecx,%eax
|
|
575 |
sarl %ecx
|
|
576 |
je 5f
|
|
577 |
cmpl $33,%ecx
|
|
578 |
jae 3f
|
|
579 |
1: subl %esi,%edi
|
|
580 |
.p2align 4,,15
|
|
581 |
2: movl (%esi),%edx
|
|
582 |
movl %edx,(%edi,%esi,1)
|
|
583 |
addl $4,%esi
|
|
584 |
subl $1,%ecx
|
|
585 |
jnz 2b
|
|
586 |
addl %esi,%edi
|
|
587 |
jmp 5f
|
|
588 |
3: smovl # align to 8 bytes, we know we are 4 byte aligned to start
|
|
589 |
subl $1,%ecx
|
|
590 |
4: .p2align 4,,15
|
|
591 |
movq 0(%esi),%mm0
|
|
592 |
addl $64,%edi
|
|
593 |
movq 8(%esi),%mm1
|
|
594 |
subl $16,%ecx
|
|
595 |
movq 16(%esi),%mm2
|
|
596 |
movq %mm0,-64(%edi)
|
|
597 |
movq 24(%esi),%mm0
|
|
598 |
movq %mm1,-56(%edi)
|
|
599 |
movq 32(%esi),%mm1
|
|
600 |
movq %mm2,-48(%edi)
|
|
601 |
movq 40(%esi),%mm2
|
|
602 |
movq %mm0,-40(%edi)
|
|
603 |
movq 48(%esi),%mm0
|
|
604 |
movq %mm1,-32(%edi)
|
|
605 |
movq 56(%esi),%mm1
|
|
606 |
movq %mm2,-24(%edi)
|
|
607 |
movq %mm0,-16(%edi)
|
|
608 |
addl $64,%esi
|
|
609 |
movq %mm1,-8(%edi)
|
|
610 |
cmpl $16,%ecx
|
|
611 |
jge 4b
|
|
612 |
emms
|
|
613 |
testl %ecx,%ecx
|
|
614 |
ja 1b
|
|
615 |
5: andl $1,%eax
|
|
616 |
je 7f
|
|
617 |
6: movw (%esi),%dx
|
|
618 |
movw %dx,(%edi)
|
|
619 |
7: popl %edi
|
|
620 |
popl %esi
|
|
621 |
ret
|
|
622 |
mmx_acs_CopyLeft:
|
|
623 |
std
|
|
624 |
leal -4(%edi,%ecx,2),%edi
|
|
625 |
movl %eax,%esi
|
|
626 |
movl %ecx,%eax
|
|
627 |
subl $2,%esi
|
|
628 |
sarl %ecx
|
|
629 |
je 4f
|
|
630 |
cmpl $32,%ecx
|
|
631 |
ja 3f
|
|
632 |
subl %esi,%edi
|
|
633 |
.p2align 4,,15
|
|
634 |
2: movl (%esi),%edx
|
|
635 |
movl %edx,(%edi,%esi,1)
|
|
636 |
subl $4,%esi
|
|
637 |
subl $1,%ecx
|
|
638 |
jnz 2b
|
|
639 |
addl %esi,%edi
|
|
640 |
jmp 4f
|
|
641 |
3: rep; smovl
|
|
642 |
4: andl $1,%eax
|
|
643 |
je 6f
|
|
644 |
addl $2,%esi
|
|
645 |
addl $2,%edi
|
|
646 |
5: movw (%esi),%dx
|
|
647 |
movw %dx,(%edi)
|
|
648 |
6: cld
|
|
649 |
popl %edi
|
|
650 |
popl %esi
|
|
651 |
ret
|
|
652 |
|
|
653 |
|
|
654 |
# Support for jlong Atomic::cmpxchg(jlong exchange_value,
|
|
655 |
# volatile jlong* dest,
|
|
656 |
# jlong compare_value,
|
|
657 |
# bool is_MP)
|
|
658 |
#
|
|
659 |
.p2align 4,,15
|
|
660 |
ELF_TYPE(_Atomic_cmpxchg_long,@function)
|
|
661 |
SYMBOL(_Atomic_cmpxchg_long):
|
|
662 |
# 8(%esp) : return PC
|
|
663 |
pushl %ebx # 4(%esp) : old %ebx
|
|
664 |
pushl %edi # 0(%esp) : old %edi
|
|
665 |
movl 12(%esp), %ebx # 12(%esp) : exchange_value (low)
|
|
666 |
movl 16(%esp), %ecx # 16(%esp) : exchange_value (high)
|
|
667 |
movl 24(%esp), %eax # 24(%esp) : compare_value (low)
|
|
668 |
movl 28(%esp), %edx # 28(%esp) : compare_value (high)
|
|
669 |
movl 20(%esp), %edi # 20(%esp) : dest
|
|
670 |
cmpl $0, 32(%esp) # 32(%esp) : is_MP
|
|
671 |
je 1f
|
|
672 |
lock
|
|
673 |
1: cmpxchg8b (%edi)
|
|
674 |
popl %edi
|
|
675 |
popl %ebx
|
|
676 |
ret
|
|
677 |
|
|
678 |
|
|
679 |
# Support for jlong Atomic::load and Atomic::store.
|
|
680 |
# void _Atomic_move_long(volatile jlong* src, volatile jlong* dst)
|
|
681 |
.p2align 4,,15
|
|
682 |
ELF_TYPE(_Atomic_move_long,@function)
|
|
683 |
SYMBOL(_Atomic_move_long):
|
|
684 |
movl 4(%esp), %eax # src
|
|
685 |
fildll (%eax)
|
|
686 |
movl 8(%esp), %eax # dest
|
|
687 |
fistpll (%eax)
|
|
688 |
ret
|
|
689 |
|