diff options
Diffstat (limited to 'arch/sparc/lib/strncpy_from_user_64.S')
| -rw-r--r-- | arch/sparc/lib/strncpy_from_user_64.S | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/arch/sparc/lib/strncpy_from_user_64.S b/arch/sparc/lib/strncpy_from_user_64.S deleted file mode 100644 index d1246b713077..000000000000 --- a/arch/sparc/lib/strncpy_from_user_64.S +++ /dev/null | |||
| @@ -1,133 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * strncpy_from_user.S: Sparc64 strncpy from userspace. | ||
| 3 | * | ||
| 4 | * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz) | ||
| 5 | */ | ||
| 6 | |||
| 7 | #include <linux/linkage.h> | ||
| 8 | #include <asm/asi.h> | ||
| 9 | #include <asm/errno.h> | ||
| 10 | |||
| 11 | .data | ||
| 12 | .align 8 | ||
| 13 | 0: .xword 0x0101010101010101 | ||
| 14 | |||
| 15 | .text | ||
| 16 | |||
| 17 | /* Must return: | ||
| 18 | * | ||
| 19 | * -EFAULT for an exception | ||
| 20 | * count if we hit the buffer limit | ||
| 21 | * bytes copied if we hit a null byte | ||
| 22 | * (without the null byte) | ||
| 23 | * | ||
| 24 | * This implementation assumes: | ||
| 25 | * %o1 is 8 aligned => !(%o2 & 7) | ||
| 26 | * %o0 is 8 aligned (if not, it will be slooooow, but will work) | ||
| 27 | * | ||
| 28 | * This is optimized for the common case: | ||
| 29 | * in my stats, 90% of src are 8 aligned (even on sparc32) | ||
| 30 | * and average length is 18 or so. | ||
| 31 | */ | ||
| 32 | |||
| 33 | ENTRY(__strncpy_from_user) | ||
| 34 | /* %o0=dest, %o1=src, %o2=count */ | ||
| 35 | andcc %o1, 7, %g0 ! IEU1 Group | ||
| 36 | bne,pn %icc, 30f ! CTI | ||
| 37 | add %o0, %o2, %g3 ! IEU0 | ||
| 38 | 60: ldxa [%o1] %asi, %g1 ! Load Group | ||
| 39 | brlez,pn %o2, 10f ! CTI | ||
| 40 | mov %o0, %o3 ! IEU0 | ||
| 41 | 50: sethi %hi(0b), %o4 ! IEU0 Group | ||
| 42 | ldx [%o4 + %lo(0b)], %o4 ! Load | ||
| 43 | sllx %o4, 7, %o5 ! IEU1 Group | ||
| 44 | 1: sub %g1, %o4, %g2 ! IEU0 Group | ||
| 45 | stx %g1, [%o0] ! Store | ||
| 46 | add %o0, 8, %o0 ! IEU1 | ||
| 47 | andcc %g2, %o5, %g0 ! IEU1 Group | ||
| 48 | bne,pn %xcc, 5f ! CTI | ||
| 49 | add %o1, 8, %o1 ! IEU0 | ||
| 50 | cmp %o0, %g3 ! IEU1 Group | ||
| 51 | bl,a,pt %xcc, 1b ! CTI | ||
| 52 | 61: ldxa [%o1] %asi, %g1 ! Load | ||
| 53 | 10: retl ! CTI Group | ||
| 54 | mov %o2, %o0 ! IEU0 | ||
| 55 | 5: srlx %g2, 32, %g7 ! IEU0 Group | ||
| 56 | sethi %hi(0xff00), %o4 ! IEU1 | ||
| 57 | andcc %g7, %o5, %g0 ! IEU1 Group | ||
| 58 | be,pn %icc, 2f ! CTI | ||
| 59 | or %o4, %lo(0xff00), %o4 ! IEU0 | ||
| 60 | srlx %g1, 48, %g7 ! IEU0 Group | ||
| 61 | andcc %g7, %o4, %g0 ! IEU1 Group | ||
| 62 | be,pn %icc, 50f ! CTI | ||
| 63 | andcc %g7, 0xff, %g0 ! IEU1 Group | ||
| 64 | be,pn %icc, 51f ! CTI | ||
| 65 | srlx %g1, 32, %g7 ! IEU0 | ||
| 66 | andcc %g7, %o4, %g0 ! IEU1 Group | ||
| 67 | be,pn %icc, 52f ! CTI | ||
| 68 | andcc %g7, 0xff, %g0 ! IEU1 Group | ||
| 69 | be,pn %icc, 53f ! CTI | ||
| 70 | 2: andcc %g2, %o5, %g0 ! IEU1 Group | ||
| 71 | be,pn %icc, 2f ! CTI | ||
| 72 | srl %g1, 16, %g7 ! IEU0 | ||
| 73 | andcc %g7, %o4, %g0 ! IEU1 Group | ||
| 74 | be,pn %icc, 54f ! CTI | ||
| 75 | andcc %g7, 0xff, %g0 ! IEU1 Group | ||
| 76 | be,pn %icc, 55f ! CTI | ||
| 77 | andcc %g1, %o4, %g0 ! IEU1 Group | ||
| 78 | be,pn %icc, 56f ! CTI | ||
| 79 | andcc %g1, 0xff, %g0 ! IEU1 Group | ||
| 80 | be,a,pn %icc, 57f ! CTI | ||
| 81 | sub %o0, %o3, %o0 ! IEU0 | ||
| 82 | 2: cmp %o0, %g3 ! IEU1 Group | ||
| 83 | bl,a,pt %xcc, 50b ! CTI | ||
| 84 | 62: ldxa [%o1] %asi, %g1 ! Load | ||
| 85 | retl ! CTI Group | ||
| 86 | mov %o2, %o0 ! IEU0 | ||
| 87 | 50: sub %o0, %o3, %o0 | ||
| 88 | retl | ||
| 89 | sub %o0, 8, %o0 | ||
| 90 | 51: sub %o0, %o3, %o0 | ||
| 91 | retl | ||
| 92 | sub %o0, 7, %o0 | ||
| 93 | 52: sub %o0, %o3, %o0 | ||
| 94 | retl | ||
| 95 | sub %o0, 6, %o0 | ||
| 96 | 53: sub %o0, %o3, %o0 | ||
| 97 | retl | ||
| 98 | sub %o0, 5, %o0 | ||
| 99 | 54: sub %o0, %o3, %o0 | ||
| 100 | retl | ||
| 101 | sub %o0, 4, %o0 | ||
| 102 | 55: sub %o0, %o3, %o0 | ||
| 103 | retl | ||
| 104 | sub %o0, 3, %o0 | ||
| 105 | 56: sub %o0, %o3, %o0 | ||
| 106 | retl | ||
| 107 | sub %o0, 2, %o0 | ||
| 108 | 57: retl | ||
| 109 | sub %o0, 1, %o0 | ||
| 110 | 30: brlez,pn %o2, 3f | ||
| 111 | sub %g0, %o2, %o3 | ||
| 112 | add %o0, %o2, %o0 | ||
| 113 | 63: lduba [%o1] %asi, %o4 | ||
| 114 | 1: add %o1, 1, %o1 | ||
| 115 | brz,pn %o4, 2f | ||
| 116 | stb %o4, [%o0 + %o3] | ||
| 117 | addcc %o3, 1, %o3 | ||
| 118 | bne,pt %xcc, 1b | ||
| 119 | 64: lduba [%o1] %asi, %o4 | ||
| 120 | 3: retl | ||
| 121 | mov %o2, %o0 | ||
| 122 | 2: retl | ||
| 123 | add %o2, %o3, %o0 | ||
| 124 | ENDPROC(__strncpy_from_user) | ||
| 125 | |||
| 126 | .section __ex_table,"a" | ||
| 127 | .align 4 | ||
| 128 | .word 60b, __retl_efault | ||
| 129 | .word 61b, __retl_efault | ||
| 130 | .word 62b, __retl_efault | ||
| 131 | .word 63b, __retl_efault | ||
| 132 | .word 64b, __retl_efault | ||
| 133 | .previous | ||