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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/sparc/sparc64/memcmp.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc64/memcmp.S')
-rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc64/memcmp.S | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc64/memcmp.S b/REORG.TODO/sysdeps/sparc/sparc64/memcmp.S new file mode 100644 index 0000000000..00ff2eec6b --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc64/memcmp.S @@ -0,0 +1,142 @@ +/* Compare two memory blocks for differences in the first COUNT bytes. + For SPARC v9. + Copyright (C) 1998-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and + Jakub Jelinek <jj@ultra.linux.cz>. + + 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/>. */ + +#include <sysdep.h> +#include <asm/asi.h> +#ifndef XCC +#define XCC xcc +#define USE_BPR + .register %g2, #scratch + .register %g3, #scratch +#endif + + .text + .align 32 +ENTRY(memcmp) +#ifdef USE_BPR + brz,pn %o2, 3f /* CTI+IEU1 Group */ +#else + tst %o2 /* IEU1 Group */ + be,pn %XCC, 3f /* CTI */ +#endif + andcc %o0, 7, %g0 /* IEU1 Group */ + bne,pn %icc, 8f /* CTI */ +1: andcc %o1, 7, %g1 /* IEU1 Group */ + + bne,pn %icc, 10f /* CTI */ + mov 64, %g3 /* IEU0 */ + ldx [%o0], %g1 /* Load Group */ + sub %o1, %o0, %o1 /* IEU0 */ + + ldx [%o0 + %o1], %g2 /* Load Group */ + add %o0, 8, %o0 /* IEU0 */ +2: mov %g1, %o3 /* IEU0 Group */ + subcc %o2, 8, %o2 /* IEU1 */ + + bcs,pn %XCC, 5f /* CTI */ + ldxa [%o0] ASI_PNF, %g1 /* Load Group */ + mov %g2, %o4 /* IEU0 */ + ldxa [%o0 + %o1] ASI_PNF, %g2 /* Load Group */ + + cmp %o3, %o4 /* IEU1 */ + be,pt %xcc, 2b /* CTI */ + add %o0, 8, %o0 /* IEU0 */ +7: mov -1, %o0 /* IEU1 */ + + retl /* CTI+IEU1 Group */ + movgu %xcc, 1, %o0 /* Single Group */ +3: retl /* CTI+IEU1 Group */ + clr %o0 /* IEU0 */ + + .align 16 +5: mov %g2, %o4 /* IEU0 */ +6: cmp %o2, -8 /* IEU1 */ + be,pn %XCC, 3b /* CTI */ + sub %g0, %o2, %o2 /* IEU0 Group */ + + sllx %o2, 3, %o2 /* IEU0 Group */ + srlx %o3, %o2, %o3 /* IEU0 Group */ + srlx %o4, %o2, %o4 /* IEU0 Group */ + clr %o0 /* IEU1 */ + + cmp %o3, %o4 /* IEU1 Group */ + movgu %xcc, 1, %o0 /* Single Group */ + retl /* CTI+IEU1 Group */ + movlu %xcc, -1, %o0 /* Single Group */ + +8: ldub [%o0], %o3 /* Load */ + add %o0, 1, %o0 /* IEU0 */ + ldub [%o1], %o4 /* Load Group */ + add %o1, 1, %o1 /* IEU0 */ + +9: cmp %o3, %o4 /* IEU1 Group */ + bne,pn %xcc, 12f /* CTI */ + subcc %o2, 1, %o2 /* IEU1 Group */ + be,pn %XCC, 3b /* CTI */ + + lduba [%o0] ASI_PNF, %o3 /* Load */ + andcc %o0, 7, %g0 /* IEU1 Group */ + be,pn %icc, 1b /* CTI */ + lduba [%o1] ASI_PNF, %o4 /* Load */ + + add %o0, 1, %o0 /* IEU0 Group */ + ba,pt %xcc, 9b /* CTI */ + add %o1, 1, %o1 /* IEU1 */ + + .align 16 +12: mov -1, %o0 /* IEU0 Group */ + cmp %o3, %o4 /* IEU1 */ + retl /* CTI+IEU1 Group */ + movgu %xcc, 1, %o0 /* Single Group */ + + .align 16 + nop /* Stub */ +10: sllx %g1, 3, %g2 /* IEU0 Group */ + sub %o1, %g1, %o1 /* IEU1 */ + sub %g3, %g2, %g3 /* IEU0 Group */ + + ldxa [%o0] ASI_PNF, %g5 /* Load */ + sub %o1, %o0, %o1 /* IEU1 */ + ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load Group */ + add %o0, 8, %o0 /* IEU0 */ + +11: sllx %g4, %g2, %o4 /* IEU0 Group */ + ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load */ + srlx %g4, %g3, %o5 /* IEU0 Group */ + mov %g5, %o3 /* IEU1 */ + + ldxa [%o0] ASI_PNF, %g5 /* Load */ + subcc %o2, 8, %o2 /* IEU1 Group */ + bcs,pn %XCC, 6b /* CTI */ + or %o4, %o5, %o4 /* IEU0 */ + + cmp %o3, %o4 /* IEU1 Group */ + be,pt %xcc, 11b /* CTI */ + add %o0, 8, %o0 /* IEU0 */ + mov -1, %o0 /* IEU0 */ + + retl /* CTI+IEU1 Group */ + movgu %xcc, 1, %o0 /* Single Group */ +END(memcmp) + +#undef bcmp +weak_alias (memcmp, bcmp) +libc_hidden_builtin_def (memcmp) |