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9baf1000ae
* some bugfixes
* powerpc.inc is almost complete (only fillchar/word/dword, get_frame etc
and the class helpers are still needed
- removed unnecessary register saving in set.inc (thanks to compilerproc)
* use registers reserved for parameters as much as possible instead of
those reserved for local vars (since those have to be saved by the
called anyway, while the ones for local vars have to be saved by the
callee)
48 lines
1.5 KiB
PHP
48 lines
1.5 KiB
PHP
{
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$Id$
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by the Free Pascal development team
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Processor specific implementation of strlen
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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{ in: p in r3 }
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{ out: result (length) in r3 }
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asm
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{ load the begin of the string in the data cache }
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dcbt 0,r3
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{ empty/invalid string? }
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cmpli r3,0
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{ if yes, do nothing }
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beq LStrLenDone
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subi r29,r3,1
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LStrLenLoop:
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lbzu r30,1(r29)
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cmpli r30,0
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bne LStrLenLoop
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sub r3,r29,r3
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LStrLenDone:
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end ['r3','r4','r29','r30','cr0'];
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{
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$Log$
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Revision 1.1 2001-09-27 15:30:29 jonas
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* conversion to compilerproc and to structure used by i386 rtl
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* some bugfixes
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* powerpc.inc is almost complete (only fillchar/word/dword, get_frame etc
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and the class helpers are still needed
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- removed unnecessary register saving in set.inc (thanks to compilerproc)
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* use registers reserved for parameters as much as possible instead of
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those reserved for local vars (since those have to be saved by the
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called anyway, while the ones for local vars have to be saved by the
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callee)
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} |