projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| ae6b8730 RH |
1 | /* Compare two memory blocks for differences in the first COUNT bytes. |
| 2 | For SPARC v9. | |
| 2b778ceb | 3 | Copyright (C) 1998-2021 Free Software Foundation, Inc. |
| ae6b8730 | 4 | This file is part of the GNU C Library. |
| ae6b8730 RH |
5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| ae6b8730 RH |
10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 14 | Lesser General Public License for more details. |
| ae6b8730 | 15 | |
| 41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 | 17 | License along with the GNU C Library; if not, see |
| 5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
| ae6b8730 RH |
19 | |
| 20 | #include <sysdep.h> | |
| 21 | #include <asm/asi.h> | |
| 22 | #ifndef XCC | |
| 23 | #define XCC xcc | |
| 24 | #define USE_BPR | |
| 8cb079d4 UD |
25 | .register %g2, #scratch |
| 26 | .register %g3, #scratch | |
| ae6b8730 RH |
27 | #endif |
| 28 | ||
| 29 | .text | |
| 30 | .align 32 | |
| 31 | ENTRY(memcmp) | |
| 32 | #ifdef USE_BPR | |
| 33 | brz,pn %o2, 3f /* CTI+IEU1 Group */ | |
| 34 | #else | |
| 35 | tst %o2 /* IEU1 Group */ | |
| 36 | be,pn %XCC, 3f /* CTI */ | |
| 37 | #endif | |
| 38 | andcc %o0, 7, %g0 /* IEU1 Group */ | |
| 39 | bne,pn %icc, 8f /* CTI */ | |
| 40 | 1: andcc %o1, 7, %g1 /* IEU1 Group */ | |
| 41 | ||
| 42 | bne,pn %icc, 10f /* CTI */ | |
| 43 | mov 64, %g3 /* IEU0 */ | |
| 44 | ldx [%o0], %g1 /* Load Group */ | |
| 45 | sub %o1, %o0, %o1 /* IEU0 */ | |
| 46 | ||
| 47 | ldx [%o0 + %o1], %g2 /* Load Group */ | |
| 48 | add %o0, 8, %o0 /* IEU0 */ | |
| 758b2153 | 49 | 2: mov %g1, %o3 /* IEU0 Group */ |
| ae6b8730 RH |
50 | subcc %o2, 8, %o2 /* IEU1 */ |
| 51 | ||
| aa4980fc | 52 | bcs,pn %XCC, 5f /* CTI */ |
| ae6b8730 RH |
53 | ldxa [%o0] ASI_PNF, %g1 /* Load Group */ |
| 54 | mov %g2, %o4 /* IEU0 */ | |
| 55 | ldxa [%o0 + %o1] ASI_PNF, %g2 /* Load Group */ | |
| 56 | ||
| 57 | cmp %o3, %o4 /* IEU1 */ | |
| 58 | be,pt %xcc, 2b /* CTI */ | |
| 59 | add %o0, 8, %o0 /* IEU0 */ | |
| 60 | 7: mov -1, %o0 /* IEU1 */ | |
| 61 | ||
| 62 | retl /* CTI+IEU1 Group */ | |
| 63 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 64 | 3: retl /* CTI+IEU1 Group */ | |
| 65 | clr %o0 /* IEU0 */ | |
| 66 | ||
| 67 | .align 16 | |
| 68 | 5: mov %g2, %o4 /* IEU0 */ | |
| 69 | 6: cmp %o2, -8 /* IEU1 */ | |
| 70 | be,pn %XCC, 3b /* CTI */ | |
| 71 | sub %g0, %o2, %o2 /* IEU0 Group */ | |
| 72 | ||
| 73 | sllx %o2, 3, %o2 /* IEU0 Group */ | |
| 74 | srlx %o3, %o2, %o3 /* IEU0 Group */ | |
| 75 | srlx %o4, %o2, %o4 /* IEU0 Group */ | |
| 76 | clr %o0 /* IEU1 */ | |
| 77 | ||
| 78 | cmp %o3, %o4 /* IEU1 Group */ | |
| 79 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 80 | retl /* CTI+IEU1 Group */ | |
| 81 | movlu %xcc, -1, %o0 /* Single Group */ | |
| 82 | ||
| 83 | 8: ldub [%o0], %o3 /* Load */ | |
| 84 | add %o0, 1, %o0 /* IEU0 */ | |
| 85 | ldub [%o1], %o4 /* Load Group */ | |
| 86 | add %o1, 1, %o1 /* IEU0 */ | |
| 87 | ||
| 88 | 9: cmp %o3, %o4 /* IEU1 Group */ | |
| 89 | bne,pn %xcc, 12f /* CTI */ | |
| 90 | subcc %o2, 1, %o2 /* IEU1 Group */ | |
| 91 | be,pn %XCC, 3b /* CTI */ | |
| 92 | ||
| 93 | lduba [%o0] ASI_PNF, %o3 /* Load */ | |
| 94 | andcc %o0, 7, %g0 /* IEU1 Group */ | |
| 95 | be,pn %icc, 1b /* CTI */ | |
| 96 | lduba [%o1] ASI_PNF, %o4 /* Load */ | |
| 97 | ||
| 98 | add %o0, 1, %o0 /* IEU0 Group */ | |
| 99 | ba,pt %xcc, 9b /* CTI */ | |
| 100 | add %o1, 1, %o1 /* IEU1 */ | |
| 101 | ||
| 102 | .align 16 | |
| 103 | 12: mov -1, %o0 /* IEU0 Group */ | |
| 104 | cmp %o3, %o4 /* IEU1 */ | |
| 105 | retl /* CTI+IEU1 Group */ | |
| 106 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 107 | ||
| 108 | .align 16 | |
| 109 | nop /* Stub */ | |
| 110 | 10: sllx %g1, 3, %g2 /* IEU0 Group */ | |
| 111 | sub %o1, %g1, %o1 /* IEU1 */ | |
| 112 | sub %g3, %g2, %g3 /* IEU0 Group */ | |
| 113 | ||
| 114 | ldxa [%o0] ASI_PNF, %g5 /* Load */ | |
| 115 | sub %o1, %o0, %o1 /* IEU1 */ | |
| 8cb079d4 | 116 | ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load Group */ |
| ae6b8730 RH |
117 | add %o0, 8, %o0 /* IEU0 */ |
| 118 | ||
| 8cb079d4 UD |
119 | 11: sllx %g4, %g2, %o4 /* IEU0 Group */ |
| 120 | ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load */ | |
| 121 | srlx %g4, %g3, %o5 /* IEU0 Group */ | |
| 758b2153 | 122 | mov %g5, %o3 /* IEU1 */ |
| ae6b8730 RH |
123 | |
| 124 | ldxa [%o0] ASI_PNF, %g5 /* Load */ | |
| 125 | subcc %o2, 8, %o2 /* IEU1 Group */ | |
| aa4980fc | 126 | bcs,pn %XCC, 6b /* CTI */ |
| ae6b8730 RH |
127 | or %o4, %o5, %o4 /* IEU0 */ |
| 128 | ||
| 129 | cmp %o3, %o4 /* IEU1 Group */ | |
| 130 | be,pt %xcc, 11b /* CTI */ | |
| 131 | add %o0, 8, %o0 /* IEU0 */ | |
| 132 | mov -1, %o0 /* IEU0 */ | |
| 133 | ||
| 134 | retl /* CTI+IEU1 Group */ | |
| 135 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 136 | END(memcmp) | |
| 137 | ||
| 138 | #undef bcmp | |
| 1ab18a5b | 139 | weak_alias (memcmp, bcmp) |
| f9a06dc1 | 140 | libc_hidden_builtin_def (memcmp) |