mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 02:39:40 +01:00
34 lines
971 B
PHP
34 lines
971 B
PHP
{
|
|
This file is part of the Free Pascal run time library.
|
|
Copyright (c) 1999-2000 by the Free Pascal development team
|
|
|
|
Processor specific implementation of strlen
|
|
|
|
See the file COPYING.FPC, included in this distribution,
|
|
for details about the copyright.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
**********************************************************************}
|
|
|
|
{ in: p in r3 }
|
|
{ out: result (length) in r3 }
|
|
asm
|
|
{ load the begin of the string in the data cache }
|
|
dcbt 0,r3
|
|
{ empty/invalid string? }
|
|
cmpldi cr0,r3,0
|
|
{ if yes, do nothing }
|
|
beq .LStrLenDone
|
|
subi r9,r3,1
|
|
.LStrLenLoop:
|
|
lbzu r10,1(r9)
|
|
cmpldi cr0,r10,0
|
|
bne .LStrLenLoop
|
|
sub r3,r9,r3
|
|
.LStrLenDone:
|
|
end;
|
|
|