sravan/system76-edk2
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1. Updated function headers in all assembly files.

Browse Source 
2. Split x86LowLevel.c into a bunch of C files to make images linked with BaseLib smaller.
3. Fixed a few minor bugs.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1066 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
bxing
2006-07-21 08:47:38 +00:00
parent 31a9215c32
commit 3f566587ae
252 changed files with 1840 additions and 2009 deletions
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89
MdePkg/Library/BaseLib/Ia32/DivU64x64Remainder.S
View File

@@ -20,69 +20,70 @@
#
#------------------------------------------------------------------------------
.global _InternalMathDivRemU64x32, _InternalMathDivRemU64x64
.extern _InternalMathDivRemU64x32
.global _InternalMathDivRemU64x64
_InternalMathDivRemU64x64:
movl 16(%esp),%ecx
testl %ecx,%ecx
jnz _DivRemU64x64
movl 20(%esp),%ecx
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InternalMathDivRemU64x64 (
# IN UINT64 Dividend,
# IN UINT64 Divisor,
# OUT UINT64 *Remainder OPTIONAL
# );
#------------------------------------------------------------------------------
_InternalMathDivRemU64x64:
movl 16(%esp), %ecx
testl %ecx, %ecx
jnz Hard
movl 20(%esp), %ecx
jecxz L1
and $0,4(%ecx)
movl %ecx,16(%esp)
L1:
and $0, 4(%ecx)
movl %ecx, 16(%esp)
L1:
jmp _InternalMathDivRemU64x32
.global _DivRemU64x64
_DivRemU64x64:
push %ebx
push %esi
push %edi
Hard:
push %ebx
push %esi
push %edi
mov 20(%esp), %edx
mov 16(%esp), %eax
movl %edx,%edi
movl %eax,%esi
movl %edx, %edi
movl %eax, %esi
mov 24(%esp), %ebx
L2:
L2:
shrl %edx
rcrl $1,%eax
shrdl $1,%ecx,%ebx
rcrl $1, %eax
shrdl $1, %ecx, %ebx
shrl %ecx
jnz L2
divl %ebx
movl %eax,%ebx
movl 28(%esp),%ecx
movl %eax, %ebx
movl 28(%esp), %ecx
mull 24(%esp)
imull %ebx,%ecx
addl %ecx,%edx
imull %ebx, %ecx
addl %ecx, %edx
mov 32(%esp), %ecx
jc TooLarge
cmpl %edx,%edi
cmpl %edx, %edi
ja Correct
jb TooLarge
cmpl %eax,%esi
cmpl %eax, %esi
jae Correct
TooLarge:
TooLarge:
decl %ebx
jecxz Return
sub 24(%esp), %eax
sbb 28(%esp), %edx
Correct:
Correct:
jecxz Return
subl %eax,%esi
sbbl %edx,%edi
movl %esi,(%ecx)
movl %edi,4(%ecx)
Return:
movl %ebx,%eax
xorl %edx,%edx
push %edi
push %esi
push %ebx
subl %eax, %esi
sbbl %edx, %edi
movl %esi, (%ecx)
movl %edi, 4(%ecx)
Return:
movl %ebx, %eax
xorl %edx, %edx
pop %edi
pop %esi
pop %ebx
ret