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//
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// Copyright 2004-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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// CA 95054 USA or visit www.sun.com if you need additional information or
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// have any questions.
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//
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.globl fixcw
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.globl sse_check
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.globl sse_unavailable
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.globl gs_load
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.globl gs_thread
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.globl _Atomic_cmpxchg_long_gcc
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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 _Copy_conjoint_bytes
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.globl _Copy_arrayof_conjoint_bytes
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.globl _Copy_conjoint_jshorts_atomic
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.globl _Copy_arrayof_conjoint_jshorts
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.globl _Copy_conjoint_jints_atomic
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.globl _Copy_arrayof_conjoint_jints
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.globl _Copy_conjoint_jlongs_atomic
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.globl _mmx_Copy_arrayof_conjoint_jshorts
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.section .text,"ax"
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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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.align 16
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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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.align 16
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.globl SafeFetch32
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.globl SafeFetchN
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.globl Fetch32PFI, Fetch32Resume
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SafeFetch32:
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SafeFetchN:
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movl 0x8(%esp), %eax
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movl 0x4(%esp), %ecx
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Fetch32PFI:
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movl (%ecx), %eax
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Fetch32Resume:
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ret
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.align 16
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.globl SpinPause
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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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/ Test SSE availability, used by os_solaris_i486.cpp
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.align 16
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sse_check:
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/ Fault if SSE not available
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xorps %xmm0,%xmm0
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/ No fault
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movl $1,%eax
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ret
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/ Signal handler continues here if SSE is not available
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sse_unavailable:
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xorl %eax,%eax
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ret
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/ Fast thread accessors, used by threadLS_solaris_i486.cpp
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.align 16
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gs_load:
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movl 4(%esp),%ecx
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movl %gs:(%ecx),%eax
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ret
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.align 16
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gs_thread:
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movl %gs:0x0,%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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.align 16
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_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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.align 16
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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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andl $3,%ecx / suffix byte count
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jz 7f / no suffix
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/ copy suffix
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5: 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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.align 16
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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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andl $3,%ecx / suffix byte count
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jz 7f / no suffix
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/ copy suffix
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5: 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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.align 16
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_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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.align 16
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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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andl $3,%ecx
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jz 7f
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/ copy suffix
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5: 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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.align 16
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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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andl $3,%ecx
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jz 7f
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5: 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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298 |
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299 |
/ 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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.align 16
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_Copy_conjoint_jshorts_atomic:
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pushl %esi
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movl 4+12(%esp),%ecx / count
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306 |
pushl %edi
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307 |
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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310 |
leal -2(%esi,%ecx,2),%eax / from + count*2 - 2
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311 |
jbe cs_CopyRight
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cmpl %eax,%edi
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313 |
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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317 |
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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321 |
movw (%esi),%dx
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322 |
movw %dx,(%edi)
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addl %eax,%esi / %eax == 2
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324 |
addl %eax,%edi
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325 |
subl $1,%ecx
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326 |
1: movl %ecx,%eax / word count less prefix
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327 |
sarl %ecx / dword count
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328 |
jz 4f / no dwords to move
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329 |
cmpl $32,%ecx
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330 |
jbe 2f / <= 32 dwords
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331 |
/ copy aligned dwords
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332 |
rep; smovl
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333 |
jmp 4f
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334 |
/ copy aligned dwords
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335 |
2: subl %esi,%edi
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336 |
.align 16
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337 |
3: movl (%esi),%edx
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338 |
movl %edx,(%edi,%esi,1)
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339 |
addl $4,%esi
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340 |
subl $1,%ecx
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341 |
jnz 3b
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342 |
addl %esi,%edi
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343 |
4: andl $1,%eax / suffix count
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344 |
jz 5f / no suffix
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345 |
/ copy suffix
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346 |
movw (%esi),%dx
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347 |
movw %dx,(%edi)
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348 |
5: popl %edi
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349 |
popl %esi
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350 |
ret
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351 |
/ copy from high to low
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352 |
cs_CopyLeft:
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353 |
std
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354 |
leal -4(%edi,%ecx,2),%edi / to + count*2 - 4
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355 |
movl %eax,%esi / from + count*2 - 2
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356 |
movl %ecx,%eax
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357 |
subl $2,%esi / from + count*2 - 4
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358 |
1: sarl %ecx / dword count
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359 |
jz 4f / no dwords to move
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360 |
cmpl $32,%ecx
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361 |
ja 3f / > 32 dwords
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362 |
subl %esi,%edi
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363 |
.align 16
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364 |
2: movl (%esi),%edx
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365 |
movl %edx,(%edi,%esi,1)
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366 |
subl $4,%esi
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367 |
subl $1,%ecx
|
|
|
368 |
jnz 2b
|
|
|
369 |
addl %esi,%edi
|
|
|
370 |
jmp 4f
|
|
|
371 |
3: rep; smovl
|
|
|
372 |
4: andl $1,%eax / suffix count
|
|
|
373 |
jz 5f / no suffix
|
|
|
374 |
/ copy suffix
|
|
|
375 |
addl $2,%esi
|
|
|
376 |
addl $2,%edi
|
|
|
377 |
movw (%esi),%dx
|
|
|
378 |
movw %dx,(%edi)
|
|
|
379 |
5: cld
|
|
|
380 |
popl %edi
|
|
|
381 |
popl %esi
|
|
|
382 |
ret
|
|
|
383 |
|
|
|
384 |
/ Support for void Copy::arrayof_conjoint_jshorts(void* from,
|
|
|
385 |
/ void* to,
|
|
|
386 |
/ size_t count)
|
|
|
387 |
.align 16
|
|
|
388 |
_Copy_arrayof_conjoint_jshorts:
|
|
|
389 |
pushl %esi
|
|
|
390 |
movl 4+12(%esp),%ecx / count
|
|
|
391 |
pushl %edi
|
|
|
392 |
movl 8+ 4(%esp),%esi / from
|
|
|
393 |
movl 8+ 8(%esp),%edi / to
|
|
|
394 |
cmpl %esi,%edi
|
|
|
395 |
leal -2(%esi,%ecx,2),%eax / from + count*2 - 2
|
|
|
396 |
jbe acs_CopyRight
|
|
|
397 |
cmpl %eax,%edi
|
|
|
398 |
jbe acs_CopyLeft
|
|
|
399 |
acs_CopyRight:
|
|
|
400 |
movl %ecx,%eax / word count
|
|
|
401 |
sarl %ecx / dword count
|
|
|
402 |
jz 4f / no dwords to move
|
|
|
403 |
cmpl $32,%ecx
|
|
|
404 |
jbe 2f / <= 32 dwords
|
|
|
405 |
/ copy aligned dwords
|
|
|
406 |
rep; smovl
|
|
|
407 |
jmp 4f
|
|
|
408 |
/ copy aligned dwords
|
|
|
409 |
.=.+5
|
|
|
410 |
2: subl %esi,%edi
|
|
|
411 |
.align 16
|
|
|
412 |
3: movl (%esi),%edx
|
|
|
413 |
movl %edx,(%edi,%esi,1)
|
|
|
414 |
addl $4,%esi
|
|
|
415 |
subl $1,%ecx
|
|
|
416 |
jnz 3b
|
|
|
417 |
addl %esi,%edi
|
|
|
418 |
4: andl $1,%eax / suffix count
|
|
|
419 |
jz 5f / no suffix
|
|
|
420 |
/ copy suffix
|
|
|
421 |
movw (%esi),%dx
|
|
|
422 |
movw %dx,(%edi)
|
|
|
423 |
5: popl %edi
|
|
|
424 |
popl %esi
|
|
|
425 |
ret
|
|
|
426 |
acs_CopyLeft:
|
|
|
427 |
std
|
|
|
428 |
leal -4(%edi,%ecx,2),%edi / to + count*2 - 4
|
|
|
429 |
movl %eax,%esi / from + count*2 - 2
|
|
|
430 |
movl %ecx,%eax
|
|
|
431 |
subl $2,%esi / from + count*2 - 4
|
|
|
432 |
sarl %ecx / dword count
|
|
|
433 |
jz 4f / no dwords to move
|
|
|
434 |
cmpl $32,%ecx
|
|
|
435 |
ja 3f / > 32 dwords
|
|
|
436 |
subl %esi,%edi
|
|
|
437 |
.align 16
|
|
|
438 |
2: movl (%esi),%edx
|
|
|
439 |
movl %edx,(%edi,%esi,1)
|
|
|
440 |
subl $4,%esi
|
|
|
441 |
subl $1,%ecx
|
|
|
442 |
jnz 2b
|
|
|
443 |
addl %esi,%edi
|
|
|
444 |
jmp 4f
|
|
|
445 |
3: rep; smovl
|
|
|
446 |
4: andl $1,%eax / suffix count
|
|
|
447 |
jz 5f / no suffix
|
|
|
448 |
/ copy suffix
|
|
|
449 |
addl $2,%esi
|
|
|
450 |
addl $2,%edi
|
|
|
451 |
movw (%esi),%dx
|
|
|
452 |
movw %dx,(%edi)
|
|
|
453 |
5: cld
|
|
|
454 |
popl %edi
|
|
|
455 |
popl %esi
|
|
|
456 |
ret
|
|
|
457 |
|
|
|
458 |
/ Support for void Copy::conjoint_jints_atomic(void* from,
|
|
|
459 |
/ void* to,
|
|
|
460 |
/ size_t count)
|
|
|
461 |
/ Equivalent to
|
|
|
462 |
/ arrayof_conjoint_jints
|
|
|
463 |
.align 16
|
|
|
464 |
_Copy_conjoint_jints_atomic:
|
|
|
465 |
_Copy_arrayof_conjoint_jints:
|
|
|
466 |
pushl %esi
|
|
|
467 |
movl 4+12(%esp),%ecx / count
|
|
|
468 |
pushl %edi
|
|
|
469 |
movl 8+ 4(%esp),%esi / from
|
|
|
470 |
movl 8+ 8(%esp),%edi / to
|
|
|
471 |
cmpl %esi,%edi
|
|
|
472 |
leal -4(%esi,%ecx,4),%eax / from + count*4 - 4
|
|
|
473 |
jbe ci_CopyRight
|
|
|
474 |
cmpl %eax,%edi
|
|
|
475 |
jbe ci_CopyLeft
|
|
|
476 |
ci_CopyRight:
|
|
|
477 |
cmpl $32,%ecx
|
|
|
478 |
jbe 2f / <= 32 dwords
|
|
|
479 |
rep; smovl
|
|
|
480 |
popl %edi
|
|
|
481 |
popl %esi
|
|
|
482 |
ret
|
|
|
483 |
.=.+10
|
|
|
484 |
2: subl %esi,%edi
|
|
|
485 |
.align 16
|
|
|
486 |
3: movl (%esi),%edx
|
|
|
487 |
movl %edx,(%edi,%esi,1)
|
|
|
488 |
addl $4,%esi
|
|
|
489 |
subl $1,%ecx
|
|
|
490 |
jnz 3b
|
|
|
491 |
popl %edi
|
|
|
492 |
popl %esi
|
|
|
493 |
ret
|
|
|
494 |
ci_CopyLeft:
|
|
|
495 |
std
|
|
|
496 |
leal -4(%edi,%ecx,4),%edi / to + count*4 - 4
|
|
|
497 |
cmpl $32,%ecx
|
|
|
498 |
ja 3f / > 32 dwords
|
|
|
499 |
subl %eax,%edi / eax == from + count*4 - 4
|
|
|
500 |
.align 16
|
|
|
501 |
2: movl (%eax),%edx
|
|
|
502 |
movl %edx,(%edi,%eax,1)
|
|
|
503 |
subl $4,%eax
|
|
|
504 |
subl $1,%ecx
|
|
|
505 |
jnz 2b
|
|
|
506 |
cld
|
|
|
507 |
popl %edi
|
|
|
508 |
popl %esi
|
|
|
509 |
ret
|
|
|
510 |
3: movl %eax,%esi / from + count*4 - 4
|
|
|
511 |
rep; smovl
|
|
|
512 |
cld
|
|
|
513 |
popl %edi
|
|
|
514 |
popl %esi
|
|
|
515 |
ret
|
|
|
516 |
|
|
|
517 |
/ Support for void Copy::conjoint_jlongs_atomic(jlong* from,
|
|
|
518 |
/ jlong* to,
|
|
|
519 |
/ size_t count)
|
|
|
520 |
/
|
|
|
521 |
/ 32-bit
|
|
|
522 |
/
|
|
|
523 |
/ count treated as signed
|
|
|
524 |
/
|
|
|
525 |
/ if (from > to) {
|
|
|
526 |
/ while (--count >= 0) {
|
|
|
527 |
/ *to++ = *from++;
|
|
|
528 |
/ }
|
|
|
529 |
/ } else {
|
|
|
530 |
/ while (--count >= 0) {
|
|
|
531 |
/ to[count] = from[count];
|
|
|
532 |
/ }
|
|
|
533 |
/ }
|
|
|
534 |
.align 16
|
|
|
535 |
_Copy_conjoint_jlongs_atomic:
|
|
|
536 |
movl 4+8(%esp),%ecx / count
|
|
|
537 |
movl 4+0(%esp),%eax / from
|
|
|
538 |
movl 4+4(%esp),%edx / to
|
|
|
539 |
cmpl %eax,%edx
|
|
|
540 |
jae cla_CopyLeft
|
|
|
541 |
cla_CopyRight:
|
|
|
542 |
subl %eax,%edx
|
|
|
543 |
jmp 2f
|
|
|
544 |
.align 16
|
|
|
545 |
1: fildll (%eax)
|
|
|
546 |
fistpll (%edx,%eax,1)
|
|
|
547 |
addl $8,%eax
|
|
|
548 |
2: subl $1,%ecx
|
|
|
549 |
jge 1b
|
|
|
550 |
ret
|
|
|
551 |
.align 16
|
|
|
552 |
3: fildll (%eax,%ecx,8)
|
|
|
553 |
fistpll (%edx,%ecx,8)
|
|
|
554 |
cla_CopyLeft:
|
|
|
555 |
subl $1,%ecx
|
|
|
556 |
jge 3b
|
|
|
557 |
ret
|
|
|
558 |
|
|
|
559 |
/ Support for void Copy::arrayof_conjoint_jshorts(void* from,
|
|
|
560 |
/ void* to,
|
|
|
561 |
/ size_t count)
|
|
|
562 |
.align 16
|
|
|
563 |
_mmx_Copy_arrayof_conjoint_jshorts:
|
|
|
564 |
pushl %esi
|
|
|
565 |
movl 4+12(%esp),%ecx
|
|
|
566 |
pushl %edi
|
|
|
567 |
movl 8+ 4(%esp),%esi
|
|
|
568 |
movl 8+ 8(%esp),%edi
|
|
|
569 |
cmpl %esi,%edi
|
|
|
570 |
leal -2(%esi,%ecx,2),%eax
|
|
|
571 |
jbe mmx_acs_CopyRight
|
|
|
572 |
cmpl %eax,%edi
|
|
|
573 |
jbe mmx_acs_CopyLeft
|
|
|
574 |
mmx_acs_CopyRight:
|
|
|
575 |
movl %ecx,%eax
|
|
|
576 |
sarl %ecx
|
|
|
577 |
je 5f
|
|
|
578 |
cmpl $33,%ecx
|
|
|
579 |
jae 3f
|
|
|
580 |
1: subl %esi,%edi
|
|
|
581 |
.align 16
|
|
|
582 |
2: movl (%esi),%edx
|
|
|
583 |
movl %edx,(%edi,%esi,1)
|
|
|
584 |
addl $4,%esi
|
|
|
585 |
subl $1,%ecx
|
|
|
586 |
jnz 2b
|
|
|
587 |
addl %esi,%edi
|
|
|
588 |
jmp 5f
|
|
|
589 |
3: smovl / align to 8 bytes, we know we are 4 byte aligned to start
|
|
|
590 |
subl $1,%ecx
|
|
|
591 |
4: .align 16
|
|
|
592 |
movq 0(%esi),%mm0
|
|
|
593 |
addl $64,%edi
|
|
|
594 |
movq 8(%esi),%mm1
|
|
|
595 |
subl $16,%ecx
|
|
|
596 |
movq 16(%esi),%mm2
|
|
|
597 |
movq %mm0,-64(%edi)
|
|
|
598 |
movq 24(%esi),%mm0
|
|
|
599 |
movq %mm1,-56(%edi)
|
|
|
600 |
movq 32(%esi),%mm1
|
|
|
601 |
movq %mm2,-48(%edi)
|
|
|
602 |
movq 40(%esi),%mm2
|
|
|
603 |
movq %mm0,-40(%edi)
|
|
|
604 |
movq 48(%esi),%mm0
|
|
|
605 |
movq %mm1,-32(%edi)
|
|
|
606 |
movq 56(%esi),%mm1
|
|
|
607 |
movq %mm2,-24(%edi)
|
|
|
608 |
movq %mm0,-16(%edi)
|
|
|
609 |
addl $64,%esi
|
|
|
610 |
movq %mm1,-8(%edi)
|
|
|
611 |
cmpl $16,%ecx
|
|
|
612 |
jge 4b
|
|
|
613 |
emms
|
|
|
614 |
testl %ecx,%ecx
|
|
|
615 |
ja 1b
|
|
|
616 |
5: andl $1,%eax
|
|
|
617 |
je 7f
|
|
|
618 |
6: movw (%esi),%dx
|
|
|
619 |
movw %dx,(%edi)
|
|
|
620 |
7: popl %edi
|
|
|
621 |
popl %esi
|
|
|
622 |
ret
|
|
|
623 |
mmx_acs_CopyLeft:
|
|
|
624 |
std
|
|
|
625 |
leal -4(%edi,%ecx,2),%edi
|
|
|
626 |
movl %eax,%esi
|
|
|
627 |
movl %ecx,%eax
|
|
|
628 |
subl $2,%esi
|
|
|
629 |
sarl %ecx
|
|
|
630 |
je 4f
|
|
|
631 |
cmpl $32,%ecx
|
|
|
632 |
ja 3f
|
|
|
633 |
subl %esi,%edi
|
|
|
634 |
.align 16
|
|
|
635 |
2: movl (%esi),%edx
|
|
|
636 |
movl %edx,(%edi,%esi,1)
|
|
|
637 |
subl $4,%esi
|
|
|
638 |
subl $1,%ecx
|
|
|
639 |
jnz 2b
|
|
|
640 |
addl %esi,%edi
|
|
|
641 |
jmp 4f
|
|
|
642 |
3: rep; smovl
|
|
|
643 |
4: andl $1,%eax
|
|
|
644 |
je 6f
|
|
|
645 |
addl $2,%esi
|
|
|
646 |
addl $2,%edi
|
|
|
647 |
5: movw (%esi),%dx
|
|
|
648 |
movw %dx,(%edi)
|
|
|
649 |
6: cld
|
|
|
650 |
popl %edi
|
|
|
651 |
popl %esi
|
|
|
652 |
ret
|
|
|
653 |
|
|
|
654 |
|
|
|
655 |
/ Support for jlong Atomic::cmpxchg(jlong exchange_value,
|
|
|
656 |
/ volatile jlong* dest,
|
|
|
657 |
/ jlong compare_value,
|
|
|
658 |
/ bool is_MP)
|
|
|
659 |
/ Used only for Solaris/gcc builds
|
|
|
660 |
.align 16
|
|
|
661 |
_Atomic_cmpxchg_long_gcc:
|
|
|
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
|