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Diffstat (limited to 'sysdeps/s390/multiarch/wcscmp-vx.S')
| -rw-r--r-- | sysdeps/s390/multiarch/wcscmp-vx.S | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/sysdeps/s390/multiarch/wcscmp-vx.S b/sysdeps/s390/multiarch/wcscmp-vx.S deleted file mode 100644 index 3b92bbd515..0000000000 --- a/sysdeps/s390/multiarch/wcscmp-vx.S +++ /dev/null @@ -1,131 +0,0 @@ -/* Vector optimized 32/64 bit S/390 version of wcscmp. - 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 wcscmp (const wchar_t *s1, const wchar_t *s2) - Compare two strings - - Register usage: - -r1=loaded byte count s1 - -r2=s1 - -r3=s2 - -r4=loaded byte coutn s2, tmp - -r5=current_len - -v16=part of s1 - -v17=part of s2 - -v18=index of unequal -*/ -ENTRY(__wcscmp_vx) - .machine "z13" - .machinemode "zarch_nohighgprs" - - lghi %r5,0 /* current_len = 0. */ - -.Lloop: - vlbb %v16,0(%r5,%r2),6 /* Load s1 to block boundary. */ - vlbb %v17,0(%r5,%r3),6 /* Load s2 to block boundary. */ - lcbb %r1,0(%r5,%r2),6 /* Get loaded byte count of s1. */ - jo .Llt16_1 /* Jump away if vr is not fully loaded. */ - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 /* Jump away if vr is not fully loaded. */ - /* Both vrs are fully loaded. */ - aghi %r5,16 - vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - - vlbb %v16,0(%r5,%r2),6 - vlbb %v17,0(%r5,%r3),6 - lcbb %r1,0(%r5,%r2),6 - jo .Llt16_1 - lcbb %r4,0(%r5,%r3),6 - jo .Llt16_2 - aghi %r5,16 - vfenezfs %v18,%v16,%v17 - jno .Lfound - j .Lloop - -.Lcmp_one_char: - /* At least one of both strings is not 4-byte aligned - and there is no full character before next block-boundary. - Compare one character to get over the boundary and - proceed with normal loop! */ - vlef %v16,0(%r5,%r2),0 /* Load one character. */ - vlef %v17,0(%r5,%r3),0 - lghi %r1,4 /* Loaded byte count is 4. */ - j .Llt_cmp /* Proceed with comparision. */ - -.Llt16_1: - lcbb %r4,0(%r5,%r3),6 /* Get loaded byte count of s2. */ -.Llt16_2: - clr %r1,%r4 - locrh %r1,%r4 /* Get minimum of bytes loaded in s1/2. */ - nill %r1,65532 /* Align bytes loaded to full characters. */ - jz .Lcmp_one_char /* Jump away if no full char is available. */ -.Llt_cmp: - algfr %r5,%r1 /* Add smallest loaded bytes to current_len. */ - vfenezfs %v18,%v16,%v17 /* Compare not equal with zero search. */ - vlgvb %r4,%v18,7 /* Get not equal index or 16 if all equal. */ - clrjl %r4,%r1,.Lfound /* Jump away if miscompare is within loaded - bytes. */ - j .Lloop - -.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 %r4,%v18,7 /* Extract not equal byte-index, */ - srl %r4,2 /* Convert it to character-index. */ - vlgvf %r3,%v16,0(%r4) /* Load character-values. */ - vlgvf %r4,%v17,0(%r4) - cr %r3,%r4 - je .Lend_equal - lghi %r2,1 - lghi %r1,-1 - locgrl %r2,%r1 - br %r14 -.Lend_equal: - lghi %r2,0 - br %r14 -END(__wcscmp_vx) -#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ |