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- powerpc and powerpc64: cleaned out code corresponding to FPC_STRTOSHORTSTRINGPROC not defined (obsolete and removed from other targets long ago). Also merged strpas.inc files into powerpc*.inc, because by now they are included only once and therefore don't need to be separate files.

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git-svn-id: trunk@27832 -
This commit is contained in:
sergei 2014-05-31 00:45:21 +00:00
parent a94187c79b
commit e5f6f9c3a1
2 changed files with 83 additions and 15 deletions
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49
rtl/powerpc/powerpc.inc
View File

@ -992,14 +992,49 @@ end;
{$ifndef FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
{$define FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
{$ifndef FPC_STRTOSHORTSTRINGPROC}
function fpc_pchar_to_shortstr(p:pchar):shortstring;[public,alias:'FPC_PCHAR_TO_SHORTSTR']; compilerproc; assembler; nostackframe;
{$else FPC_STRTOSHORTSTRINGPROC}
procedure fpc_pchar_to_shortstr(out res : shortstring;p:pchar);assembler;[public,alias:'FPC_PCHAR_TO_SHORTSTR']; compilerproc; nostackframe;
{$define FPC_STRPASPROC}
{$endif FPC_STRTOSHORTSTRINGPROC}
{$include strpas.inc}
{$undef FPC_STRPASPROC}
{
r3: result address
r4: high(result)
r5: p (source)
}
asm
{ nil? }
mr r8, p
cmplwi p, 0
{ load the begin of the string in the data cache }
dcbt 0, p
{ maxlength }
mr r10,r4
mtctr r10
{ at LStrPasDone, we set the length of the result to 255 - r10 - r4 }
{ = 255 - 255 - 0 if the soure = nil -> perfect :) }
beq .LStrPasDone
{ save address for at the end and use r7 in loop }
mr r7,r3
{ no "subi r7,r7,1" because the first byte = length byte }
subi r8,r8,1
.LStrPasLoop:
lbzu r10,1(r8)
cmplwi cr0,r10,0
stbu r10,1(r7)
bdnzf cr0*4+eq, .LStrPasLoop
{ if we stopped because of a terminating #0, decrease the length by 1 }
cntlzw r4,r10
{ get remaining count for length }
mfctr r10
{ if r10 was zero (-> stopped because of zero byte), then r4 will be 32 }
{ (32 leading zero bits) -> shr 5 = 1, otherwise this will be zero }
srwi r4,r4,5
.LStrPasDone:
subfic r10,r10,255
sub r10,r10,r4
{ store length }
stb r10,0(r3)
end;
{$endif FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}

49
rtl/powerpc64/powerpc64.inc
View File

@ -492,16 +492,49 @@ end;
{$ifndef FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
{$define FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
{$ifndef FPC_STRTOSHORTSTRINGPROC}
function fpc_pchar_to_shortstr(p:pchar):shortstring;[public,alias:'FPC_PCHAR_TO_SHORTSTR']; compilerproc;
assembler; nostackframe;
{$else FPC_STRTOSHORTSTRINGPROC}
procedure fpc_pchar_to_shortstr(out res : shortstring;p:pchar);[public,alias:'FPC_PCHAR_TO_SHORTSTR']; compilerproc;
assembler; nostackframe;
{$define FPC_STRPASPROC}
{$endif FPC_STRTOSHORTSTRINGPROC}
{$include strpas.inc}
{$undef FPC_STRPASPROC}
{
r3: result address
r4: high(result)
r5: p (source)
}
asm
{ nil? }
mr r8, p
cmpldi p, 0
{ load the begin of the string in the data cache }
dcbt 0, p
{ maxlength }
mr r10,r4
mtctr r10
{ at LStrPasDone, we set the length of the result to 255 - r10 - r4 }
{ = 255 - 255 - 0 if the soure = nil -> perfect :) }
beq .LStrPasDone
{ save address for at the end and use r7 in loop }
mr r7,r3
{ no "subi r7,r7,1" because the first byte = length byte }
subi r8,r8,1
.LStrPasLoop:
lbzu r10,1(r8)
cmplwi cr0,r10,0
stbu r10,1(r7)
bdnzf cr0*4+eq, .LStrPasLoop
{ if we stopped because of a terminating #0, decrease the length by 1 }
cntlzd r4,r10
{ get remaining count for length }
mfctr r10
{ if r10 was zero (-> stopped because of zero byte), then r4 will be 64 }
{ (64 leading zero bits) -> shr 6 = 1, otherwise this will be zero }
srdi r4,r4,6
.LStrPasDone:
subfic r10,r10,255
sub r10,r10,r4
{ store length }
stb r10,0(r3)
end;
{$endif FPC_SYSTEM_HAS_FPC_PCHAR_TO_SHORTSTR}
(*