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Diffstat (limited to 'sysdeps/s390/multiarch/wmemcmp-vx.S')
| -rw-r--r-- | sysdeps/s390/multiarch/wmemcmp-vx.S | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/sysdeps/s390/multiarch/wmemcmp-vx.S b/sysdeps/s390/multiarch/wmemcmp-vx.S deleted file mode 100644 index 40e71e5a65..0000000000 --- a/sysdeps/s390/multiarch/wmemcmp-vx.S +++ /dev/null @@ -1,149 +0,0 @@ -/* Vector Optimized 32/64 bit S/390 version of wmemcmp. - 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 - -/* int wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n) - Compare at most n characters of two wchar_t-arrays. - - Register usage: - -r0=tmp - -r1=number of blocks - -r2=s1 - -r3=s2 - -r4=n - -r5=current_len - -v16=part of s1 - -v17=part of s2 - -v18=index of unequal -*/ -ENTRY(__wmemcmp_vx) - .machine "z13" - .machinemode "zarch_nohighgprs" - -# if !defined __s390x__ - llgfr %r4,%r4 -# endif /* !defined __s390x__ */ - clgije %r4,0,.Lend_equal /* Nothing to do if n == 0. */ - - /* Check range of maxlen and convert to byte-count. */ -# ifdef __s390x__ - tmhh %r4,49152 /* Test bit 0 or 1 of maxlen. */ - lghi %r1,-4 /* Max byte-count is 18446744073709551612. */ -# else - tmlh %r4,49152 /* Test bit 0 or 1 of maxlen. */ - llilf %r1,4294967292 /* Max byte-count is 4294967292. */ -# endif /* !__s390x__ */ - sllg %r4,%r4,2 /* Convert character-count to byte-count. */ - locgrne %r4,%r1 /* Use max byte-count, if bit 0/1 was one. */ - - lghi %r5,0 /* current_len = 0. */ - - clgijh %r4,16,.Lgt16 - -.Lremaining: - aghi %r4,-1 /* vstl needs highest index. */ - vll %v16,%r4,0(%r2) - vll %v17,%r4,0(%r3) - vfenef %v18,%v16,%v17 /* Compare not equal. */ - vlgvb %r1,%v18,7 /* Load unequal index or 16 if not found. */ - clrj %r1,%r4,12,.Lfound2 /* r1 <= r4 -> unequal within loaded - bytes. */ - -.Lend_equal: - lghi %r2,0 - br %r14 - -.Lfound: - /* vfenezf found an unequal element or zero. - This instruction compares unsigned words, but wchar_t is signed. - Thus we have to compare the found element again. */ - vlgvb %r1,%v18,7 /* Extract not equal byte-index. */ -.Lfound2: - srl %r1,2 /* And convert it to character-index. */ - vlgvf %r0,%v16,0(%r1) /* Load character-values. */ - vlgvf %r1,%v17,0(%r1) - cr %r0,%r1 - je .Lend_equal - lghi %r2,1 - lghi %r1,-1 - locgrl %r2,%r1 - br %r14 - -.Lgt16: - clgijh %r4,64,.Lpreloop64 - -.Lpreloop16: - srlg %r1,%r4,4 /* Split into 16byte blocks */ -.Lloop16: - vl %v16,0(%r5,%r2) - vl %v17,0(%r5,%r3) - aghi %r5,16 - vfenefs %v18,%v16,%v17 /* Compare not equal. */ - jno .Lfound - brctg %r1,.Lloop16 /* Loop until all blocks are processed. */ - - llgfr %r4,%r4 - nilf %r4,15 /* Get remaining bytes */ - locgre %r2,%r4 - ber %r14 - la %r2,0(%r5,%r2) - la %r3,0(%r5,%r3) - j .Lremaining - -.Lpreloop64: - srlg %r1,%r4,6 /* Split into 64byte blocks */ -.Lloop64: - vl %v16,0(%r5,%r2) - vl %v17,0(%r5,%r3) - vfenefs %v18,%v16,%v17 /* Compare not equal. */ - jno .Lfound - - vl %v16,16(%r5,%r2) - vl %v17,16(%r5,%r3) - vfenefs %v18,%v16,%v17 - jno .Lfound - - vl %v16,32(%r5,%r2) - vl %v17,32(%r5,%r3) - vfenefs %v18,%v16,%v17 - jno .Lfound - - vl %v16,48(%r5,%r2) - vl %v17,48(%r5,%r3) - aghi %r5,64 - vfenefs %v18,%v16,%v17 - jno .Lfound - - brctg %r1,.Lloop64 /* Loop until all blocks are processed. */ - - llgfr %r4,%r4 - nilf %r4,63 /* Get remaining bytes */ - locgre %r2,%r4 - ber %r14 - clgijh %r4,16,.Lpreloop16 - la %r2,0(%r5,%r2) - la %r3,0(%r5,%r3) - j .Lremaining -END(__wmemcmp_vx) -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ |