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- Fixed a bug in the section which makes the destination pointer dword aligned.
svn path=/trunk/; revision=4812
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parent
cdeedf3bb4
commit
d197898a75
2 changed files with 23 additions and 31 deletions
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@ -1,5 +1,5 @@
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/*
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* $Id: memcpy.s,v 1.1 2003/05/27 18:58:15 hbirr Exp $
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* $Id: memcpy.s,v 1.2 2003/06/01 17:10:42 hbirr Exp $
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*/
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/*
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@ -17,23 +17,22 @@ _memcpy:
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mov 0xc(%ebp),%esi
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mov 0x10(%ebp),%ecx
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cld
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cmp $4,%ecx
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cmp $16,%ecx
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jb .L1
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mov %ecx,%edx
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test $3,%edi
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je .L2
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/*
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* Should we make the source or the destination dword aligned?
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* Make the destination dword aligned
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*/
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mov %ecx,%edx
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mov %edi,%ecx
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and $3,%ecx
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sub %ecx,%edx
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rep movsb
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mov %edx,%ecx
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mov %edi,%ecx
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and $3,%ecx
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sub $5,%ecx
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not %ecx
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sub %ecx,%edx
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rep movsb
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mov %edx,%ecx
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.L2:
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cmp $4,%ecx
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jb .L1
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mov %ecx,%edx
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shr $2,%ecx
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rep movsl
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mov %edx,%ecx
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@ -1,5 +1,5 @@
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/*
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* $Id: memset.s,v 1.1 2003/05/27 18:58:15 hbirr Exp $
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* $Id: memset.s,v 1.2 2003/06/01 17:10:42 hbirr Exp $
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*/
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/*
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@ -9,33 +9,28 @@
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.globl _memset
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_memset:
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; push %ebp
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; mov %esp,%ebp
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push %ebp
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mov %esp,%ebp
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push %edi
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push %edx
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; mov 0x8(%ebp),%edi
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; movzb 0xc(%ebp),%eax
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; mov 0x10(%ebp),%ecx
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mov 0x10(%esp),%edi
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movzb 0x14(%esp),%eax
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mov 0x18(%esp),%ecx
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mov 0x8(%ebp),%edi
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movzb 0xc(%ebp),%eax
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mov 0x10(%ebp),%ecx
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cld
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cmp $4,%ecx
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cmp $16,%ecx
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jb .L1
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mov $0x01010101,%edx
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mul %edx
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mov %ecx,%edx
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test $3,%edi
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je .L2
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mov %ecx,%edx
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mov %edi,%ecx
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and $3,%ecx
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sub $5,%ecx
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not %ecx
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sub %ecx,%edx
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rep stosb
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mov %edx,%ecx
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.L2:
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cmp $4,%ecx
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jb .L1
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mov %ecx,%edx
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shr $2,%ecx
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rep stosl
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mov %edx,%ecx
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@ -45,10 +40,8 @@ _memset:
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je .L3
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rep stosb
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.L3:
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pop %edx
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pop %edi
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; mov 0x8(%ebp),%eax
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mov 0x8(%esp),%eax
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; leave
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mov 0x8(%ebp),%eax
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leave
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ret
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