diff options
Diffstat (limited to 'sysdeps/s390/multiarch/wcslen-vx.S')
| -rw-r--r-- | sysdeps/s390/multiarch/wcslen-vx.S | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/sysdeps/s390/multiarch/wcslen-vx.S b/sysdeps/s390/multiarch/wcslen-vx.S deleted file mode 100644 index 7539303fbd..0000000000 --- a/sysdeps/s390/multiarch/wcslen-vx.S +++ /dev/null @@ -1,91 +0,0 @@ -/* Vector optimized 32/64 bit S/390 version of wcslen. - Copyright (C) 2015-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) - -# include "sysdep.h" -# include "asm-syntax.h" - - .text - -/* size_t wcslen (const wchar_t *s) - Returns length of string s. - - Register usage: - -r1=bytes to 4k-byte boundary - -r2=s - -r3=tmp - -r4=tmp - -r5=current_len and return_value - -v16=part of s -*/ -ENTRY(__wcslen_vx) - .machine "z13" - .machinemode "zarch_nohighgprs" - - vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */ - lcbb %r1,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */ - - tmll %r2,3 /* Test if s is 4-byte aligned? */ - jne .Lfallback /* And use common-code variant if not. */ - - vfenezf %v16,%v16,%v16 /* Find element not equal with zero search. */ - vlgvb %r4,%v16,7 /* Load zero index or 16 if not found. */ - clr %r4,%r1 /* If found zero within loaded bytes? */ - locgrl %r2,%r4 /* Then copy return value. */ - jl .Lend /* And return. */ - - /* Align s to 16 byte. */ - risbgn %r3,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ - lghi %r5,16 /* current_len = 16. */ - slr %r5,%r3 /* Compute bytes to 16bytes boundary. */ - - /* Find zero in 16byte aligned loop. */ -.Lloop: - vl %v16,0(%r5,%r2) /* Load s. */ - vfenezfs %v16,%v16,%v16 /* Find element not equal with zero search. */ - je .Lfound /* Jump away if zero was found. */ - vl %v16,16(%r5,%r2) - vfenezfs %v16,%v16,%v16 - je .Lfound16 - vl %v16,32(%r5,%r2) - vfenezfs %v16,%v16,%v16 - je .Lfound32 - vl %v16,48(%r5,%r2) - vfenezfs %v16,%v16,%v16 - je .Lfound48 - - aghi %r5,64 - j .Lloop /* No zero found -> loop. */ - -.Lfound48: - aghi %r5,16 -.Lfound32: - aghi %r5,16 -.Lfound16: - aghi %r5,16 -.Lfound: - vlgvb %r2,%v16,7 /* Load byte index of zero. */ - algr %r2,%r5 -.Lend: - srlg %r2,%r2,2 /* Convert byte-count to character-count. */ - br %r14 -.Lfallback: - jg __wcslen_c -END(__wcslen_vx) -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ |