1. Add Assert in SetJump.S

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / DivU64x64Remainder.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   DivU64x64Remainder.asm\r
#\r
# Abstract:\r
#\r
#   Calculate the quotient of a 64-bit integer by a 64-bit integer and returns\r
#   both the quotient and the remainder\r
#\r
#------------------------------------------------------------------------------\r
\r
\r
\r
     \r
\r
.extern _InternalMathDivRemU64x32\r
\r
.global _InternalMathDivRemU64x64\r
_InternalMathDivRemU64x64: \r
    movl    16(%esp),%ecx\r
    testl   %ecx,%ecx\r
    jnz     _DivRemU64x64\r
    movl    20(%esp),%ecx\r
    jecxz   L1\r
    and     $0,4(%ecx)\r
    movl    %ecx,16(%esp)\r
L1: \r
    jmp     _InternalMathDivRemU64x32\r
\r
\r
.global _DivRemU64x64\r
_DivRemU64x64:\r
    push   %ebx                                                                             \r
    push   %esi                                                                             \r
    push   %edi                                        \r
    mov     20(%esp), %edx\r
    mov     16(%esp), %eax\r
    movl    %edx,%edi\r
    movl    %eax,%esi\r
    mov     24(%esp), %ebx\r
L2: \r
    shrl    %edx\r
    rcrl    $1,%eax\r
    shrdl   $1,%ecx,%ebx\r
    shrl    %ecx\r
    jnz     L2\r
    divl    %ebx\r
    movl    %eax,%ebx\r
    movl    28(%esp),%ecx\r
    mull    24(%esp)\r
    imull   %ebx,%ecx\r
    addl    %ecx,%edx\r
    mov     32(%esp), %ecx\r
    jc      TooLarge\r
    cmpl    %edx,%edi\r
    ja      Correct\r
    jb      TooLarge\r
    cmpl    %eax,%esi\r
    jae     Correct\r
TooLarge: \r
    decl    %ebx\r
    jecxz   Return\r
    sub     24(%esp), %eax\r
    sbb     28(%esp), %edx\r
Correct: \r
    jecxz   Return\r
    subl    %eax,%esi\r
    sbbl    %edx,%edi\r
    movl    %esi,(%ecx)\r
    movl    %edi,4(%ecx)\r
Return: \r
    movl    %ebx,%eax\r
    xorl    %edx,%edx\r
    push   %edi                                        \r
    push   %esi                                                                             \r
    push   %ebx                                                                             \r
    ret\r