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. | |
| 04277e02 | 3 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
| ae6b8730 RH |
4 | This file is part of the GNU C Library. |
| 5 | Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and | |
| 6 | Jakub Jelinek <jj@ultra.linux.cz>. | |
| 7 | ||
| 8 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
9 | modify it under the terms of the GNU Lesser General Public |
| 10 | License as published by the Free Software Foundation; either | |
| 11 | version 2.1 of the License, or (at your option) any later version. | |
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12 | |
| 13 | The GNU C Library is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 16 | Lesser General Public License for more details. |
| ae6b8730 | 17 | |
| 41bdb6e2 | 18 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
19 | License along with the GNU C Library; if not, see |
| 20 | <http://www.gnu.org/licenses/>. */ | |
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21 | |
| 22 | #include <sysdep.h> | |
| 23 | #include <asm/asi.h> | |
| 24 | #ifndef XCC | |
| 25 | #define XCC xcc | |
| 26 | #define USE_BPR | |
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27 | .register %g2, #scratch |
| 28 | .register %g3, #scratch | |
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29 | #endif |
| 30 | ||
| 31 | .text | |
| 32 | .align 32 | |
| 33 | ENTRY(memcmp) | |
| 34 | #ifdef USE_BPR | |
| 35 | brz,pn %o2, 3f /* CTI+IEU1 Group */ | |
| 36 | #else | |
| 37 | tst %o2 /* IEU1 Group */ | |
| 38 | be,pn %XCC, 3f /* CTI */ | |
| 39 | #endif | |
| 40 | andcc %o0, 7, %g0 /* IEU1 Group */ | |
| 41 | bne,pn %icc, 8f /* CTI */ | |
| 42 | 1: andcc %o1, 7, %g1 /* IEU1 Group */ | |
| 43 | ||
| 44 | bne,pn %icc, 10f /* CTI */ | |
| 45 | mov 64, %g3 /* IEU0 */ | |
| 46 | ldx [%o0], %g1 /* Load Group */ | |
| 47 | sub %o1, %o0, %o1 /* IEU0 */ | |
| 48 | ||
| 49 | ldx [%o0 + %o1], %g2 /* Load Group */ | |
| 50 | add %o0, 8, %o0 /* IEU0 */ | |
| 758b2153 | 51 | 2: mov %g1, %o3 /* IEU0 Group */ |
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52 | subcc %o2, 8, %o2 /* IEU1 */ |
| 53 | ||
| aa4980fc | 54 | bcs,pn %XCC, 5f /* CTI */ |
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55 | ldxa [%o0] ASI_PNF, %g1 /* Load Group */ |
| 56 | mov %g2, %o4 /* IEU0 */ | |
| 57 | ldxa [%o0 + %o1] ASI_PNF, %g2 /* Load Group */ | |
| 58 | ||
| 59 | cmp %o3, %o4 /* IEU1 */ | |
| 60 | be,pt %xcc, 2b /* CTI */ | |
| 61 | add %o0, 8, %o0 /* IEU0 */ | |
| 62 | 7: mov -1, %o0 /* IEU1 */ | |
| 63 | ||
| 64 | retl /* CTI+IEU1 Group */ | |
| 65 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 66 | 3: retl /* CTI+IEU1 Group */ | |
| 67 | clr %o0 /* IEU0 */ | |
| 68 | ||
| 69 | .align 16 | |
| 70 | 5: mov %g2, %o4 /* IEU0 */ | |
| 71 | 6: cmp %o2, -8 /* IEU1 */ | |
| 72 | be,pn %XCC, 3b /* CTI */ | |
| 73 | sub %g0, %o2, %o2 /* IEU0 Group */ | |
| 74 | ||
| 75 | sllx %o2, 3, %o2 /* IEU0 Group */ | |
| 76 | srlx %o3, %o2, %o3 /* IEU0 Group */ | |
| 77 | srlx %o4, %o2, %o4 /* IEU0 Group */ | |
| 78 | clr %o0 /* IEU1 */ | |
| 79 | ||
| 80 | cmp %o3, %o4 /* IEU1 Group */ | |
| 81 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 82 | retl /* CTI+IEU1 Group */ | |
| 83 | movlu %xcc, -1, %o0 /* Single Group */ | |
| 84 | ||
| 85 | 8: ldub [%o0], %o3 /* Load */ | |
| 86 | add %o0, 1, %o0 /* IEU0 */ | |
| 87 | ldub [%o1], %o4 /* Load Group */ | |
| 88 | add %o1, 1, %o1 /* IEU0 */ | |
| 89 | ||
| 90 | 9: cmp %o3, %o4 /* IEU1 Group */ | |
| 91 | bne,pn %xcc, 12f /* CTI */ | |
| 92 | subcc %o2, 1, %o2 /* IEU1 Group */ | |
| 93 | be,pn %XCC, 3b /* CTI */ | |
| 94 | ||
| 95 | lduba [%o0] ASI_PNF, %o3 /* Load */ | |
| 96 | andcc %o0, 7, %g0 /* IEU1 Group */ | |
| 97 | be,pn %icc, 1b /* CTI */ | |
| 98 | lduba [%o1] ASI_PNF, %o4 /* Load */ | |
| 99 | ||
| 100 | add %o0, 1, %o0 /* IEU0 Group */ | |
| 101 | ba,pt %xcc, 9b /* CTI */ | |
| 102 | add %o1, 1, %o1 /* IEU1 */ | |
| 103 | ||
| 104 | .align 16 | |
| 105 | 12: mov -1, %o0 /* IEU0 Group */ | |
| 106 | cmp %o3, %o4 /* IEU1 */ | |
| 107 | retl /* CTI+IEU1 Group */ | |
| 108 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 109 | ||
| 110 | .align 16 | |
| 111 | nop /* Stub */ | |
| 112 | 10: sllx %g1, 3, %g2 /* IEU0 Group */ | |
| 113 | sub %o1, %g1, %o1 /* IEU1 */ | |
| 114 | sub %g3, %g2, %g3 /* IEU0 Group */ | |
| 115 | ||
| 116 | ldxa [%o0] ASI_PNF, %g5 /* Load */ | |
| 117 | sub %o1, %o0, %o1 /* IEU1 */ | |
| 8cb079d4 | 118 | ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load Group */ |
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119 | add %o0, 8, %o0 /* IEU0 */ |
| 120 | ||
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121 | 11: sllx %g4, %g2, %o4 /* IEU0 Group */ |
| 122 | ldxa [%o0 + %o1] ASI_PNF, %g4 /* Load */ | |
| 123 | srlx %g4, %g3, %o5 /* IEU0 Group */ | |
| 758b2153 | 124 | mov %g5, %o3 /* IEU1 */ |
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125 | |
| 126 | ldxa [%o0] ASI_PNF, %g5 /* Load */ | |
| 127 | subcc %o2, 8, %o2 /* IEU1 Group */ | |
| aa4980fc | 128 | bcs,pn %XCC, 6b /* CTI */ |
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129 | or %o4, %o5, %o4 /* IEU0 */ |
| 130 | ||
| 131 | cmp %o3, %o4 /* IEU1 Group */ | |
| 132 | be,pt %xcc, 11b /* CTI */ | |
| 133 | add %o0, 8, %o0 /* IEU0 */ | |
| 134 | mov -1, %o0 /* IEU0 */ | |
| 135 | ||
| 136 | retl /* CTI+IEU1 Group */ | |
| 137 | movgu %xcc, 1, %o0 /* Single Group */ | |
| 138 | END(memcmp) | |
| 139 | ||
| 140 | #undef bcmp | |
| 1ab18a5b | 141 | weak_alias (memcmp, bcmp) |
| f9a06dc1 | 142 | libc_hidden_builtin_def (memcmp) |