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Diffstat (limited to 'sysdeps/alpha/rawmemchr.S')
-rw-r--r-- | sysdeps/alpha/rawmemchr.S | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/sysdeps/alpha/rawmemchr.S b/sysdeps/alpha/rawmemchr.S deleted file mode 100644 index d3a69fa63c..0000000000 --- a/sysdeps/alpha/rawmemchr.S +++ /dev/null @@ -1,90 +0,0 @@ -/* Copyright (C) 2000, 2002 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* Return pointer to first occurrence of CH in STR. */ - -#include <sysdep.h> - - .set noreorder - .set noat - -ENTRY(__rawmemchr) -#ifdef PROF - ldgp gp, 0(pv) - lda AT, _mcount - jsr AT, (AT), _mcount - .prologue 1 -#else - .prologue 0 -#endif - - zapnot a1, 1, a1 # e0 : zero extend the search character - ldq_u t0, 0(a0) # .. e1 : load first quadword - sll a1, 8, t5 # e0 : replicate the search character - andnot a0, 7, v0 # .. e1 : align our loop pointer - - or t5, a1, a1 # e0 : - lda t4, -1 # .. e1 : build garbage mask - sll a1, 16, t5 # e0 : - unop # : - - mskqh t4, a0, t4 # e0 : - or t5, a1, a1 # .. e1 : - sll a1, 32, t5 # e0 : - cmpbge zero, t4, t4 # .. e1 : bits set iff byte is garbage - - or t5, a1, a1 # e0 : - xor t0, a1, t1 # .. e1 : make bytes == c zero - cmpbge zero, t1, t3 # e0 : bits set iff byte == c - unop # : - - andnot t3, t4, t0 # e0 : clear garbage bits - fnop # .. fa : - unop # : - bne t0, $found # .. e1 (zdb) - - .align 4 -$loop: - ldq t0, 8(v0) # e0 : - addq v0, 8, v0 # .. e1 : - nop # e0 : - xor t0, a1, t1 # .. e1 (ev5 data stall) - - cmpbge zero, t1, t0 # e0 : bits set iff byte == c - beq t0, $loop # .. e1 (zdb) - -$found: - negq t0, t1 # e0 : clear all but least set bit - and t0, t1, t0 # e1 (stall) - and t0, 0xf0, t2 # e0 : binary search for that set bit - and t0, 0xcc, t3 # .. e1 : - - and t0, 0xaa, t4 # e0 : - cmovne t2, 4, t2 # .. e1 : - cmovne t3, 2, t3 # e0 : - cmovne t4, 1, t4 # .. e1 : - - addq t2, t3, t2 # e0 : - addq v0, t4, v0 # .. e1 : - addq v0, t2, v0 # e0 : - ret # .. e1 : - - END(__rawmemchr) - -libc_hidden_def (__rawmemchr) -weak_alias (__rawmemchr, rawmemchr) |