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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* SPDX-License-Identifier: GPL-2.0 */ /* una_asm.S: Kernel unaligned trap assembler helpers. * * Copyright (C) 1996,2005,2008 David S. Miller (davem@davemloft.net) * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include <linux/errno.h> .text retl_efault: retl mov -EFAULT, %o0 /* int __do_int_store(unsigned long *dst_addr, int size, * unsigned long *src_val) * * %o0 = dest_addr * %o1 = size * %o2 = src_val * * Return '0' on success, -EFAULT on failure. */ .globl __do_int_store __do_int_store: ld [%o2], %g1 cmp %o1, 2 be 2f cmp %o1, 4 be 1f srl %g1, 24, %g2 srl %g1, 16, %g7 4: stb %g2, [%o0] srl %g1, 8, %g2 5: stb %g7, [%o0 + 1] ld [%o2 + 4], %g7 6: stb %g2, [%o0 + 2] srl %g7, 24, %g2 7: stb %g1, [%o0 + 3] srl %g7, 16, %g1 8: stb %g2, [%o0 + 4] srl %g7, 8, %g2 9: stb %g1, [%o0 + 5] 10: stb %g2, [%o0 + 6] b 0f 11: stb %g7, [%o0 + 7] 1: srl %g1, 16, %g7 12: stb %g2, [%o0] srl %g1, 8, %g2 13: stb %g7, [%o0 + 1] 14: stb %g2, [%o0 + 2] b 0f 15: stb %g1, [%o0 + 3] 2: srl %g1, 8, %g2 16: stb %g2, [%o0] 17: stb %g1, [%o0 + 1] 0: retl mov 0, %o0 .section __ex_table,#alloc .word 4b, retl_efault .word 5b, retl_efault .word 6b, retl_efault .word 7b, retl_efault .word 8b, retl_efault .word 9b, retl_efault .word 10b, retl_efault .word 11b, retl_efault .word 12b, retl_efault .word 13b, retl_efault .word 14b, retl_efault .word 15b, retl_efault .word 16b, retl_efault .word 17b, retl_efault .previous /* int do_int_load(unsigned long *dest_reg, int size, * unsigned long *saddr, int is_signed) * * %o0 = dest_reg * %o1 = size * %o2 = saddr * %o3 = is_signed * * Return '0' on success, -EFAULT on failure. */ .globl do_int_load do_int_load: cmp %o1, 8 be 9f cmp %o1, 4 be 6f 4: ldub [%o2], %g1 5: ldub [%o2 + 1], %g2 sll %g1, 8, %g1 tst %o3 be 3f or %g1, %g2, %g1 sll %g1, 16, %g1 sra %g1, 16, %g1 3: b 0f st %g1, [%o0] 6: ldub [%o2 + 1], %g2 sll %g1, 24, %g1 7: ldub [%o2 + 2], %g7 sll %g2, 16, %g2 8: ldub [%o2 + 3], %g3 sll %g7, 8, %g7 or %g3, %g2, %g3 or %g7, %g3, %g7 or %g1, %g7, %g1 b 0f st %g1, [%o0] 9: ldub [%o2], %g1 10: ldub [%o2 + 1], %g2 sll %g1, 24, %g1 11: ldub [%o2 + 2], %g7 sll %g2, 16, %g2 12: ldub [%o2 + 3], %g3 sll %g7, 8, %g7 or %g1, %g2, %g1 or %g7, %g3, %g7 or %g1, %g7, %g7 13: ldub [%o2 + 4], %g1 st %g7, [%o0] 14: ldub [%o2 + 5], %g2 sll %g1, 24, %g1 15: ldub [%o2 + 6], %g7 sll %g2, 16, %g2 16: ldub [%o2 + 7], %g3 sll %g7, 8, %g7 or %g1, %g2, %g1 or %g7, %g3, %g7 or %g1, %g7, %g7 st %g7, [%o0 + 4] 0: retl mov 0, %o0 .section __ex_table,#alloc .word 4b, retl_efault .word 5b, retl_efault .word 6b, retl_efault .word 7b, retl_efault .word 8b, retl_efault .word 9b, retl_efault .word 10b, retl_efault .word 11b, retl_efault .word 12b, retl_efault .word 13b, retl_efault .word 14b, retl_efault .word 15b, retl_efault .word 16b, retl_efault .previous |