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author | Roland McGrath <roland@gnu.org> | 2008-11-26 07:26:32 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2008-11-26 07:26:32 +0000 |
commit | c0439b95b88bccacb5562e372f881beb23376a72 (patch) | |
tree | aea008f060bef693d43f285f5adb5ece05cb7db6 /sysdeps/alpha/ffs.S | |
parent | f1092afe15ad779d61a1420c05854a9122d3ce5e (diff) | |
download | glibc-c0439b95b88bccacb5562e372f881beb23376a72.tar.gz glibc-c0439b95b88bccacb5562e372f881beb23376a72.tar.xz glibc-c0439b95b88bccacb5562e372f881beb23376a72.zip |
Moved alpha to ports repository.
2008-11-25 Roland McGrath <roland@redhat.com> * sysdeps/alpha, sysdeps/unix/bsd/osf/alpha, sysdeps/unix/bsd/Attic/osf1/alpha, sysdeps/unix/sysv/linux/alpha, sysdeps/unix/sysv/linux/alpha/alpha, sysdeps/unix/alpha, sysdeps/mach/alpha, sysdeps/mach/hurd/alpha: Subdirectories moved to ports repository. * configure.in (base_machine): Remove alpha case.
Diffstat (limited to 'sysdeps/alpha/ffs.S')
-rw-r--r-- | sysdeps/alpha/ffs.S | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/sysdeps/alpha/ffs.S b/sysdeps/alpha/ffs.S deleted file mode 100644 index 5f2074ee7c..0000000000 --- a/sysdeps/alpha/ffs.S +++ /dev/null @@ -1,91 +0,0 @@ -/* Copyright (C) 1996, 1997, 1998, 2004 Free Software Foundation, Inc. - Contributed by David Mosberger (davidm@cs.arizona.edu). - 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. */ - -/* Finds the first bit set in an integer. Optimized for the Alpha - architecture. */ - -#include <sysdep.h> - - .set noreorder - .set noat - - -ENTRY(__ffs) -#ifdef PROF - ldgp gp, 0(pv) - lda AT, _mcount - jsr AT, (AT), _mcount - .prologue 1 - zap $16, 0xF0, $16 - br $ffsl..ng -#else - .prologue 0 - zap $16, 0xF0, $16 - # FALLTHRU -#endif -END(__ffs) - - .align 4 -ENTRY(ffsl) -#ifdef PROF - ldgp gp, 0(pv) - lda AT, _mcount - jsr AT, (AT), _mcount - .prologue 1 -$ffsl..ng: -#else - .prologue 0 -#endif - not $16, $1 # e0 : - ldi $2, -1 # .. e1 : - cmpbge $1, $2, $3 # e0 : bit N == 1 for byte N == 0 - clr $0 # .. e1 : - addq $3, 1, $4 # e0 : - bic $4, $3, $3 # e1 : bit N == 1 for first byte N != 0 - and $3, 0xF0, $4 # e0 : - and $3, 0xCC, $5 # .. e1 : - and $3, 0xAA, $6 # e0 : - cmovne $4, 4, $0 # .. e1 : - cmovne $5, 2, $5 # e0 : - cmovne $6, 1, $6 # .. e1 : - addl $0, $5, $0 # e0 : - addl $0, $6, $0 # e1 : $0 == N - extbl $16, $0, $1 # e0 : $1 == byte N - ldi $2, 1 # .. e1 : - negq $1, $3 # e0 : - and $3, $1, $3 # e1 : bit N == least bit set of byte N - and $3, 0xF0, $4 # e0 : - and $3, 0xCC, $5 # .. e1 : - and $3, 0xAA, $6 # e0 : - cmovne $4, 5, $2 # .. e1 : - cmovne $5, 2, $5 # e0 : - cmovne $6, 1, $6 # .. e1 : - s8addl $0, $2, $0 # e0 : mult byte ofs by 8 and sum - addl $5, $6, $5 # .. e1 : - addl $0, $5, $0 # e0 : - nop # .. e1 : - cmoveq $16, 0, $0 # e0 : trap input == 0 case. - ret # .. e1 : 18 - -END(ffsl) - -weak_alias (__ffs, ffs) -libc_hidden_builtin_def (ffs) -weak_extern (ffsl) -weak_alias (ffsl, ffsll) |