diff options
Diffstat (limited to 'arch/sparc64/lib/bitops.S')
| -rw-r--r-- | arch/sparc64/lib/bitops.S | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/sparc64/lib/bitops.S b/arch/sparc64/lib/bitops.S deleted file mode 100644 index 6b015a6eefb5..000000000000 --- a/arch/sparc64/lib/bitops.S +++ /dev/null | |||
| @@ -1,165 +0,0 @@ | |||
| 1 | /* bitops.S: Sparc64 atomic bit operations. | ||
| 2 | * | ||
| 3 | * Copyright (C) 2000, 2007 David S. Miller (davem@davemloft.net) | ||
| 4 | */ | ||
| 5 | |||
| 6 | #include <asm/asi.h> | ||
| 7 | #include <asm/backoff.h> | ||
| 8 | |||
| 9 | .text | ||
| 10 | |||
| 11 | /* On SMP we need to use memory barriers to ensure | ||
| 12 | * correct memory operation ordering, nop these out | ||
| 13 | * for uniprocessor. | ||
| 14 | */ | ||
| 15 | |||
| 16 | #ifdef CONFIG_SMP | ||
| 17 | #define BITOP_PRE_BARRIER membar #StoreLoad | #LoadLoad | ||
| 18 | #define BITOP_POST_BARRIER \ | ||
| 19 | ba,pt %xcc, 80b; \ | ||
| 20 | membar #StoreLoad | #StoreStore | ||
| 21 | |||
| 22 | 80: retl | ||
| 23 | nop | ||
| 24 | #else | ||
| 25 | #define BITOP_PRE_BARRIER | ||
| 26 | #define BITOP_POST_BARRIER | ||
| 27 | #endif | ||
| 28 | |||
| 29 | .globl test_and_set_bit | ||
| 30 | .type test_and_set_bit,#function | ||
| 31 | test_and_set_bit: /* %o0=nr, %o1=addr */ | ||
| 32 | BACKOFF_SETUP(%o3) | ||
| 33 | BITOP_PRE_BARRIER | ||
| 34 | srlx %o0, 6, %g1 | ||
| 35 | mov 1, %o2 | ||
| 36 | sllx %g1, 3, %g3 | ||
| 37 | and %o0, 63, %g2 | ||
| 38 | sllx %o2, %g2, %o2 | ||
| 39 | add %o1, %g3, %o1 | ||
| 40 | 1: ldx [%o1], %g7 | ||
| 41 | or %g7, %o2, %g1 | ||
| 42 | casx [%o1], %g7, %g1 | ||
| 43 | cmp %g7, %g1 | ||
| 44 | bne,pn %xcc, 2f | ||
| 45 | and %g7, %o2, %g2 | ||
| 46 | clr %o0 | ||
| 47 | movrne %g2, 1, %o0 | ||
| 48 | BITOP_POST_BARRIER | ||
| 49 | retl | ||
| 50 | nop | ||
| 51 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 52 | .size test_and_set_bit, .-test_and_set_bit | ||
| 53 | |||
| 54 | .globl test_and_clear_bit | ||
| 55 | .type test_and_clear_bit,#function | ||
| 56 | test_and_clear_bit: /* %o0=nr, %o1=addr */ | ||
| 57 | BACKOFF_SETUP(%o3) | ||
| 58 | BITOP_PRE_BARRIER | ||
| 59 | srlx %o0, 6, %g1 | ||
| 60 | mov 1, %o2 | ||
| 61 | sllx %g1, 3, %g3 | ||
| 62 | and %o0, 63, %g2 | ||
| 63 | sllx %o2, %g2, %o2 | ||
| 64 | add %o1, %g3, %o1 | ||
| 65 | 1: ldx [%o1], %g7 | ||
| 66 | andn %g7, %o2, %g1 | ||
| 67 | casx [%o1], %g7, %g1 | ||
| 68 | cmp %g7, %g1 | ||
| 69 | bne,pn %xcc, 2f | ||
| 70 | and %g7, %o2, %g2 | ||
| 71 | clr %o0 | ||
| 72 | movrne %g2, 1, %o0 | ||
| 73 | BITOP_POST_BARRIER | ||
| 74 | retl | ||
| 75 | nop | ||
| 76 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 77 | .size test_and_clear_bit, .-test_and_clear_bit | ||
| 78 | |||
| 79 | .globl test_and_change_bit | ||
| 80 | .type test_and_change_bit,#function | ||
| 81 | test_and_change_bit: /* %o0=nr, %o1=addr */ | ||
| 82 | BACKOFF_SETUP(%o3) | ||
| 83 | BITOP_PRE_BARRIER | ||
| 84 | srlx %o0, 6, %g1 | ||
| 85 | mov 1, %o2 | ||
| 86 | sllx %g1, 3, %g3 | ||
| 87 | and %o0, 63, %g2 | ||
| 88 | sllx %o2, %g2, %o2 | ||
| 89 | add %o1, %g3, %o1 | ||
| 90 | 1: ldx [%o1], %g7 | ||
| 91 | xor %g7, %o2, %g1 | ||
| 92 | casx [%o1], %g7, %g1 | ||
| 93 | cmp %g7, %g1 | ||
| 94 | bne,pn %xcc, 2f | ||
| 95 | and %g7, %o2, %g2 | ||
| 96 | clr %o0 | ||
| 97 | movrne %g2, 1, %o0 | ||
| 98 | BITOP_POST_BARRIER | ||
| 99 | retl | ||
| 100 | nop | ||
| 101 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 102 | .size test_and_change_bit, .-test_and_change_bit | ||
| 103 | |||
| 104 | .globl set_bit | ||
| 105 | .type set_bit,#function | ||
| 106 | set_bit: /* %o0=nr, %o1=addr */ | ||
| 107 | BACKOFF_SETUP(%o3) | ||
| 108 | srlx %o0, 6, %g1 | ||
| 109 | mov 1, %o2 | ||
| 110 | sllx %g1, 3, %g3 | ||
| 111 | and %o0, 63, %g2 | ||
| 112 | sllx %o2, %g2, %o2 | ||
| 113 | add %o1, %g3, %o1 | ||
| 114 | 1: ldx [%o1], %g7 | ||
| 115 | or %g7, %o2, %g1 | ||
| 116 | casx [%o1], %g7, %g1 | ||
| 117 | cmp %g7, %g1 | ||
| 118 | bne,pn %xcc, 2f | ||
| 119 | nop | ||
| 120 | retl | ||
| 121 | nop | ||
| 122 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 123 | .size set_bit, .-set_bit | ||
| 124 | |||
| 125 | .globl clear_bit | ||
| 126 | .type clear_bit,#function | ||
| 127 | clear_bit: /* %o0=nr, %o1=addr */ | ||
| 128 | BACKOFF_SETUP(%o3) | ||
| 129 | srlx %o0, 6, %g1 | ||
| 130 | mov 1, %o2 | ||
| 131 | sllx %g1, 3, %g3 | ||
| 132 | and %o0, 63, %g2 | ||
| 133 | sllx %o2, %g2, %o2 | ||
| 134 | add %o1, %g3, %o1 | ||
| 135 | 1: ldx [%o1], %g7 | ||
| 136 | andn %g7, %o2, %g1 | ||
| 137 | casx [%o1], %g7, %g1 | ||
| 138 | cmp %g7, %g1 | ||
| 139 | bne,pn %xcc, 2f | ||
| 140 | nop | ||
| 141 | retl | ||
| 142 | nop | ||
| 143 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 144 | .size clear_bit, .-clear_bit | ||
| 145 | |||
| 146 | .globl change_bit | ||
| 147 | .type change_bit,#function | ||
| 148 | change_bit: /* %o0=nr, %o1=addr */ | ||
| 149 | BACKOFF_SETUP(%o3) | ||
| 150 | srlx %o0, 6, %g1 | ||
| 151 | mov 1, %o2 | ||
| 152 | sllx %g1, 3, %g3 | ||
| 153 | and %o0, 63, %g2 | ||
| 154 | sllx %o2, %g2, %o2 | ||
| 155 | add %o1, %g3, %o1 | ||
| 156 | 1: ldx [%o1], %g7 | ||
| 157 | xor %g7, %o2, %g1 | ||
| 158 | casx [%o1], %g7, %g1 | ||
| 159 | cmp %g7, %g1 | ||
| 160 | bne,pn %xcc, 2f | ||
| 161 | nop | ||
| 162 | retl | ||
| 163 | nop | ||
| 164 | 2: BACKOFF_SPIN(%o3, %o4, 1b) | ||
| 165 | .size change_bit, .-change_bit | ||