diff options
Diffstat (limited to 'sysdeps/s390/multiarch/wcsnlen-vx.S')
| -rw-r--r-- | sysdeps/s390/multiarch/wcsnlen-vx.S | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/sysdeps/s390/multiarch/wcsnlen-vx.S b/sysdeps/s390/multiarch/wcsnlen-vx.S deleted file mode 100644 index c678b94cac..0000000000 --- a/sysdeps/s390/multiarch/wcsnlen-vx.S +++ /dev/null @@ -1,151 +0,0 @@ -/* Vector optimized 32/64 bit S/390 version of wcsnlen. - 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 wcsnlen (const wchar_t *s, size_t maxlen) - Returns the number of characters in s or at most maxlen. - - Register usage: - -r1=tmp - -r2=address of string - -r3=maxlen (number of characters to be read) - -r4=tmp - -r5=current_len and return_value - -v16=part of s -*/ -ENTRY(__wcsnlen_vx) - - .machine "z13" - .machinemode "zarch_nohighgprs" - -# if !defined __s390x__ - llgfr %r3,%r3 -# endif /* !defined __s390x__ */ - - clgfi %r3,0 /* if maxlen == 0, return 0. */ - locgre %r2,%r3 - ber %r14 - - 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. */ - llgfr %r1,%r1 /* Convert 32bit to 64bit. */ - - tmll %r2,3 /* Test if s is 4-byte aligned? */ - jne .Lfallback /* And use common-code variant if not. */ - - /* Check range of maxlen and convert to byte-count. */ -# ifdef __s390x__ - tmhh %r3,49152 /* Test bit 0 or 1 of maxlen. */ - lghi %r4,-4 /* Max byte-count is 18446744073709551612. */ -# else - tmlh %r3,49152 /* Test bit 0 or 1 of maxlen. */ - llilf %r4,4294967292 /* Max byte-count is 4294967292. */ -# endif /* !__s390x__ */ - sllg %r3,%r3,2 /* Convert character-count to byte-count. */ - locgrne %r3,%r4 /* Use max byte-count, if bit 0/1 was one. */ - - vfenezf %v16,%v16,%v16 /* Find element not equal with zero search. */ - clgr %r1,%r3 - locgrh %r1,%r3 /* loaded_byte_count - = min (loaded_byte_count, maxlen) */ - - vlgvb %r5,%v16,7 /* Load zero index or 16 if not found. */ - clrjl %r5,%r1,.Lend /* Found zero within loaded bytes -> return. */ - - clgr %r1,%r3 /* If loaded_byte_count == maxlen -> end. */ - locgre %r5,%r3 - je .Lend - - /* Align s to 16 byte. */ - risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ - lghi %r5,16 /* current_len = 16. */ - slr %r5,%r4 /* Compute bytes to 16bytes boundary. */ - - lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ - aghi %r1,64 - clgrjl %r1,%r3,.Lloop64 - - /* Find zero in max 64byte with aligned s. */ -.Llt64: - 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. */ - aghi %r5,16 - clgrjhe %r5,%r3,.Lfound /* If current_len >= maxlen -> end. */ - vl %v16,0(%r5,%r2) - vfenezfs %v16,%v16,%v16 - je .Lfound - aghi %r5,16 - clgrjhe %r5,%r3,.Lfound - vl %v16,0(%r5,%r2) - vfenezfs %v16,%v16,%v16 - je .Lfound - aghi %r5,16 - clgrjhe %r5,%r3,.Lfound - vl %v16,0(%r5,%r2) - vfenezfs %v16,%v16,%v16 - j .Lfound - -.Lfound48: - aghi %r5,16 -.Lfound32: - aghi %r5,16 -.Lfound16: - aghi %r5,16 -.Lfound: - vlgvb %r4,%v16,7 /* Load byte index of zero or 16 if no zero. */ - algr %r5,%r4 - - clgr %r5,%r3 - locgrh %r5,%r3 /* Return min (current_len, maxlen). */ -.Lend: - srlg %r2,%r5,2 /* Convert byte-count to character-count. */ - br %r14 - - /* Find zero in 16byte aligned loop. */ -.Lloop64: - 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 - lgr %r1,%r5 /* If %r5 + 64 < maxlen? -> loop64. */ - aghi %r1,64 - clgrjl %r1,%r3,.Lloop64 - - j .Llt64 - -.Lfallback: - jg __wcsnlen_c -END(__wcsnlen_vx) -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ |