Quellcode-Bibliothek linux_x86_64.S

# :subq$,%rdx
# Copyright (c) 2004, 2013, Oraclejge      b
EMOVECOPYRIGHTNOTICES OR THIS  HEADER.
#
# This code is free software; you canjg       1b
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
# published by the Software Foundation.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY        #                                                size_t count)
# FITNESSEquivalentto
# version 2  moredetails( copy isincluded theLICENSEfile that
# accompanied this code#   conjoint_jlongs_atomic
#
# You should have received a copy           arrayof_conjoint_oops
# 2 along with this         
  St  Floor,Boston,MA02110-1301 USA.
#
# Please contact Oracle,        #rsi to
#         rdx -count treated asssize_t
# questions.
#


        # NOTE WELL!  The _Copy functions are called directlyjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 # from server-compiler-generated code  type    _Copy_arrayof_conjoint_jlongs,@function
 # which means that they *must* either not use floating
 # point or use it in the same manner as does the server
 # compiler.
 
        .globl _Copy_arrayof_conjoint_bytes
.globl_Copy_arrayof_conjoint_jshorts
        globl _Copy_conjoint_jshorts_atomic
        .globl _Copy_arrayof_conjoint_jints
        .globl _Copy_conjoint_jints_atomic_opy_arrayof_conjoint_jlongs:
        _opy_conjoint_jlongs_atomic:
        .globl _Copy_conjoint_jlongs_atomic

 .text

        .globl              -8(rdi%dx,8),rax # from count*8-8
        .lign16
        .type  SpinPause,@function
SpinPause:
        rep        cmpq%ax%rsi
        nop
        movq   $1, %rax
        ret

        jbe      acl_CopyLeft 
        #                                               void* to,
        #                                               size_t count)
        # rdi - from
        #         leaq-8(%rsi,%rdx,8),%rcx # to + count8 
        # rdx -        negq     rdx
        #
        .p2align 4,,15
 .              3f
_Copy_arrayof_conjoint_bytes:
        movq     %rdx,%r8             # byte count
        shrq3%              # qwordcount
        cmpq     %di
leaq(,r8)raxfrom+bcount1-1
        jbe      acb_CopyRight
        cmpq     %rax,%rsi
        jbe      acb_CopyLeft
acb_CopyRight:
        leaq     -8(%rdi,%rdx,8),%rax # from + qcount*8 - 8
        leaq     -8(%rsi,%rdx,8),%rcx # to + qcount*8 - 8
       negqrdx
        jmp      7f
        .movqrsi24(rcx,%rdx8)
1:      movq     8(%rax,%rdx,8),%rsi
        movq     %rsi,8(%rcx,%rdx,8)
     $rdx
        jnz      1b
2:     rsi%,rdx
        jz       3f
        movl     8(%rax),%esi         # copy trailing dword
        movl     %esi,8(%rcx)
        addq        movq(rax%dx,8,
addq,               % ,  we
                                      #  can't use it as a 3           $,rdx
3:      testq    $2,%r8        
               4java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        movw     8(%rax),%si          # copy         jnz4b
movw,%rcx
        addq     $2,%rcx
4:      testq           24%,%dx,8,rcx
               5java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
movb(rdi%,1)%   #copyjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
             %%)
5:      ret             %rcx,(%rsi,rdx)
        .p2align 4,,15
6:      movq     -24(%rax             rcx,,)
        movq     %rsi,-24(%rcx,%rdx,8)
movq(,rdx%
        movq     %rsi,-16(%rcx,%rdx,8)
        movq%
        movq            b
        movq     (%rax,%rdx,8),%rsi
        movq     %rsi,(%rcx,%rdx,8)
7:      addq     $4,%rdx
        jle      6b
        subq     $4,%rdx
        jl       1b
        jmp      2b
acb_CopyLeft:
        testq    $1,%r8               # check for trailing byte
        jz       1f
        movb     -1(%rdi,%r8,1),%cl   # copy trailing byte
        movb     %cl,-1(%rsi,%r8,1)
        subq     $1,%r8               # adjust for possible trailing word
1:      testq    $2,%r8               # check for trailing word
        jz       2f
        movw     -2(%rdi,%r8,1),%cx   # copy trailing word
        movw     %cx,-2(%rsi,%r8,1)
2:      testq    $4,%r8               # check for trailing dword
        jz       5f
        movl     (%rdi,%rdx,8),%ecx   # copy trailing dword
        movl     %ecx,(%rsi,%rdx,8)
        jmp      5f
        .p2align 4,,15
3:      movq     -8(%rdi,%rdx,8),%rcx
        movq     %rcx,-8(%rsi,%rdx,8)
        subq     $1,%rdx
        jnz      3b
        ret
        .p2align 4,,15
4:      movq     24(%rdi,%rdx,8),%rcx
        movq     %rcx,24(%rsi,%rdx,8)
        movq     16(%rdi,%rdx,8),%rcx
        movq     %rcx,16(%rsi,%rdx,8)
        movq     8(%rdi,%rdx,8),%rcx
        movq     %rcx,8(%rsi,%rdx,8)
        movq     (%rdi,%rdx,8),%rcx
        movq     %rcx,(%rsi,%rdx,8)
5:      subq     $4,%rdx
        jge      4b
        addq     $4,%rdx
        jg       3b
        ret

        # Support for void Copy::arrayof_conjoint_jshorts(void* from,
        #                                                 void* to,
        #                                                 size_t count)
        # Equivalent to
        #   conjoint_jshorts_atomic
        #
        # If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we
        # let the hardware handle it.  The tow or four words within dwords
        # or qwords that span cache line boundaries will still be loaded
        # and stored atomically.
        #
        # rdi - from
        # rsi - to
        # rdx - count, treated as ssize_t
        #
        .p2align 4,,15
 .type    _Copy_arrayof_conjoint_jshorts,@function
 .type    _Copy_conjoint_jshorts_atomic,@function
_Copy_arrayof_conjoint_jshorts:
_Copy_conjoint_jshorts_atomic:
        movq     %rdx,%r8             # word count
        shrq     $2,%rdx              # qword count
        cmpq     %rdi,%rsi
        leaq     -2(%rdi,%r8,2),%rax  # from + wcount*2 - 2
        jbe      acs_CopyRight
        cmpq     %rax,%rsi
        jbe      acs_CopyLeft 
acs_CopyRight:
        leaq     -8(%rdi,%rdx,8),%rax # from + qcount*8 - 8
        leaq     -8(%rsi,%rdx,8),%rcx # to + qcount*8 - 8
        negq     %rdx
        jmp      6f
1:      movq     8(%rax,%rdx,8),%rsi
        movq     %rsi,8(%rcx,%rdx,8)
        addq     $1,%rdx
        jnz      1b
2:      testq    $2,%r8               # check for trailing dword
        jz       3f
        movl     8(%rax),%esi         # copy trailing dword
        movl     %esi,8(%rcx)
        addq     $4,%rcx              # original %rsi is trashed, so we
                                      #  can't use it as a base register
3:      testq    $1,%r8               # check for trailing word
        jz       4f
        movw     -2(%rdi,%r8,2),%si   # copy trailing word
        movw     %si,8(%rcx)
4:      ret
        .p2align 4,,15
5:      movq     -24(%rax,%rdx,8),%rsi
        movq     %rsi,-24(%rcx,%rdx,8)
        movq     -16(%rax,%rdx,8),%rsi
        movq     %rsi,-16(%rcx,%rdx,8)
        movq     -8(%rax,%rdx,8),%rsi
        movq     %rsi,-8(%rcx,%rdx,8)
        movq     (%rax,%rdx,8),%rsi
        movq     %rsi,(%rcx,%rdx,8)
6:      addq     $4,%rdx
        jle      5b
        subq     $4,%rdx
        jl       1b
        jmp      2b
acs_CopyLeft:
        testq    $1,%r8               # check for trailing word
        jz       1f
        movw     -2(%rdi,%r8,2),%cx   # copy trailing word
        movw     %cx,-2(%rsi,%r8,2)
1:      testq    $2,%r8               # check for trailing dword
        jz       4f
        movl     (%rdi,%rdx,8),%ecx   # copy trailing dword
        movl     %ecx,(%rsi,%rdx,8)
        jmp      4f
2:      movq     -8(%rdi,%rdx,8),%rcx
        movq     %rcx,-8(%rsi,%rdx,8)
        subq     $1,%rdx
        jnz      2b
        ret
        .p2align 4,,15
3:      movq     24(%rdi,%rdx,8),%rcx
        movq     %rcx,24(%rsi,%rdx,8)
        movq     16(%rdi,%rdx,8),%rcx
        movq     %rcx,16(%rsi,%rdx,8)
        movq     8(%rdi,%rdx,8),%rcx
        movq     %rcx,8(%rsi,%rdx,8)
        movq     (%rdi,%rdx,8),%rcx
        movq     %rcx,(%rsi,%rdx,8)
4:      subq     $4,%rdx
        jge      3b
        addq     $4,%rdx
        jg       2b
        ret

        # Support for void Copy::arrayof_conjoint_jints(jint* from,
        #                                               jint* to,
        #                                               size_t count)
        # Equivalent to
        #   conjoint_jints_atomic
        #
        # If 'from' and/or 'to' are aligned on 4-byte boundaries, we let
        # the hardware handle it.  The two dwords within qwords that span
        # cache line boundaries will still be loaded and stored atomically.
        #
        # rdi - from
        # rsi - to
        # rdx - count, treated as ssize_t
        #
        .p2align 4,,15
 .type    _Copy_arrayof_conjoint_jints,@function
 .type    _Copy_conjoint_jints_atomic,@function
_Copy_arrayof_conjoint_jints:
_Copy_conjoint_jints_atomic:
        movq     %rdx,%r8             # dword count
        shrq     %rdx                 # qword count
        cmpq     %rdi,%rsi
        leaq     -4(%rdi,%r8,4),%rax  # from + dcount*4 - 4
        jbe      aci_CopyRight
        cmpq     %rax,%rsi
        jbe      aci_CopyLeft 
aci_CopyRight:
        leaq     -8(%rdi,%rdx,8),%rax # from + qcount*8 - 8
        leaq     -8(%rsi,%rdx,8),%rcx # to + qcount*8 - 8
        negq     %rdx
        jmp      5f
        .p2align 4,,15
1:      movq     8(%rax,%rdx,8),%rsi
        movq     %rsi,8(%rcx,%rdx,8)
        addq     $1,%rdx
        jnz       1b
2:      testq    $1,%r8               # check for trailing dword
        jz       3f
        movl     8(%rax),%esi         # copy trailing dword
        movl     %esi,8(%rcx)
3:      ret
        .p2align 4,,15
4:      movq     -24(%rax,%rdx,8),%rsi
        movq     %rsi,-24(%rcx,%rdx,8)
        movq     -16(%rax,%rdx,8),%rsi
        movq     %rsi,-16(%rcx,%rdx,8)
        movq     -8(%rax,%rdx,8),%rsi
        movq     %rsi,-8(%rcx,%rdx,8)
        movq     (%rax,%rdx,8),%rsi
        movq     %rsi,(%rcx,%rdx,8)
5:      addq     $4,%rdx
        jle      4b
        subq     $4,%rdx
        jl       1b
        jmp      2b
aci_CopyLeft:
        testq    $1,%r8               # check for trailing dword
        jz       3f
        movl     -4(%rdi,%r8,4),%ecx  # copy trailing dword
        movl     %ecx,-4(%rsi,%r8,4)
        jmp      3f
1:      movq     -8(%rdi,%rdx,8),%rcx
        movq     %rcx,-8(%rsi,%rdx,8)
        subq     $1,%rdx
        jnz      1b
        ret
        .p2align 4,,15
2:      movq     24(%rdi,%rdx,8),%rcx
        movq     %rcx,24(%rsi,%rdx,8)
        movq     16(%rdi,%rdx,8),%rcx
        movq     %rcx,16(%rsi,%rdx,8)
        movq     8(%rdi,%rdx,8),%rcx
        movq     %rcx,8(%rsi,%rdx,8)
        movq     (%rdi,%rdx,8),%rcx
        movq     %rcx,(%rsi,%rdx,8)
3:      subq     $4,%rdx
        jge      2b
        addq     $4,%rdx
        jg       1b
        ret

        # Support for void Copy::arrayof_conjoint_jlongs(jlong* from,
        #                                                jlong* to,
        #                                                size_t count)
        # Equivalent to
        #   conjoint_jlongs_atomic
        #   arrayof_conjoint_oops
        #   conjoint_oops_atomic
        #
        # rdi - from
        # rsi - to
        # rdx - count, treated as ssize_t
        #
        .p2align 4,,15
 .type    _Copy_arrayof_conjoint_jlongs,@function
 .type    _Copy_conjoint_jlongs_atomic,@function
_Copy_arrayof_conjoint_jlongs:
_Copy_conjoint_jlongs_atomic:
        cmpq     %rdi,%rsi
        leaq     -8(%rdi,%rdx,8),%rax # from + count*8 - 8
        jbe      acl_CopyRight
        cmpq     %rax,%rsi
        jbe      acl_CopyLeft 
acl_CopyRight:
        leaq     -8(%rsi,%rdx,8),%rcx # to + count*8 - 8
        negq     %rdx
        jmp      3f
1:      movq     8(%rax,%rdx,8),%rsi
        movq     %rsi,8(%rcx,%rdx,8)
        addq     $1,%rdx
        jnz      1b
        ret
        .p2align 4,,15
2:      movq     -24(%rax,%rdx,8),%rsi
        movq     %rsi,-24(%rcx,%rdx,8)
        movq     -16(%rax,%rdx,8),%rsi
        movq     %rsi,-16(%rcx,%rdx,8)
        movq     -8(%rax,%rdx,8),%rsi
        movq     %rsi,-8(%rcx,%rdx,8)
        movq     (%rax,%rdx,8),%rsi
        movq     %rsi,(%rcx,%rdx,8)
3:      addq     $4,%rdx
        jle      2b
        subq     $4,%rdx
        jl       1b
        ret
4:      movq     -8(%rdi,%rdx,8),%rcx
        movq     %rcx,-8(%rsi,%rdx,8)
        subq     $1,%rdx
        jnz      4b
        ret
        .p2align 4,,15
5:      movq     24(%rdi,%rdx,8),%rcx
        movq     %rcx,24(%rsi,%rdx,8)
        movq     16(%rdi,%rdx,8),%rcx
        movq     %rcx,16(%rsi,%rdx,8)
        movq     8(%rdi,%rdx,8),%rcx
        movq     %rcx,8(%rsi,%rdx,8)
        movq     (%rdi,%rdx,8),%rcx
        movq     %rcx,(%rsi,%rdx,8)
acl_CopyLeft:
        subq     $4,%rdx
        jge      5b
        addq     $4,%rdx
        jg       4b
        ret