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* fixed strcopy and strecopy if there are #1 chars right before the end

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of the string to copied
This commit is contained in:
Jonas Maebe 2003-05-28 19:18:10 +00:00
parent eb441421cc
commit 161618df2d
1 changed files with 11 additions and 7 deletions
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18
rtl/powerpc/strings.inc
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@ -53,12 +53,6 @@ LStrCopyAligned:
addi r8,r8,(0xfefefeff)@l addi r8,r8,(0xfefefeff)@l
lis r7,(0x80808080)@ha lis r7,(0x80808080)@ha
addi r7,r7,(0x80808080)@l addi r7,r7,(0x80808080)@l
{
li r8,-257 { 0x0feff }
andis. r8,r8,0x0fefe
li r7,-32640 { 0x08080 }
andis. r7,r7,0x08080
}
{ load first 4 bytes } { load first 4 bytes }
lwzu r0,4(r4) lwzu r0,4(r4)
@ -74,6 +68,9 @@ LStrCopyAlignedLoop:
lwzu r0,4(r4) lwzu r0,4(r4)
b LStrCopyAlignedLoop b LStrCopyAlignedLoop
LStrCopyEndFound: LStrCopyEndFound:
{ adjust for possible $01 bytes coming before the terminating 0 byte }
rlwinm r8,r0,7,0,31
andc r10,r10,r8
{ result is either 0, 8, 16 or 24 depending on which byte is zero } { result is either 0, 8, 16 or 24 depending on which byte is zero }
cntlzw r10,r10 cntlzw r10,r10
addi r9,r9,3 addi r9,r9,3
@ -137,6 +134,9 @@ LStrECopyAlignedLoop:
stwu r0,4(r3) stwu r0,4(r3)
b LStrECopyAlignedLoop b LStrECopyAlignedLoop
LStrECopyEndFound: LStrECopyEndFound:
{ adjust for possible $01 bytes coming before the terminating 0 byte }
rlwinm r8,r0,7,0,31
andc r10,r10,r8
{ result is either 0, 8, 16 or 24 depending on which byte is zero } { result is either 0, 8, 16 or 24 depending on which byte is zero }
cntlzw r10,r10 cntlzw r10,r10
addi r3,r3,3 addi r3,r3,3
@ -458,7 +458,11 @@ end ['R0','R9','R10','CR0','CR1'];
{ {
$Log$ $Log$
Revision 1.17 2003-05-24 10:16:24 jonas Revision 1.18 2003-05-28 19:18:10 jonas
* fixed strcopy and strecopy if there are #1 chars right before the end
of the string to copied
Revision 1.17 2003/05/24 10:16:24 jonas
* fixed strscan and strrscan * fixed strscan and strrscan
Revision 1.16 2003/05/17 12:55:30 florian Revision 1.16 2003/05/17 12:55:30 florian