diff options
Diffstat (limited to 'arch/m32r/lib/memset.S')
| -rw-r--r-- | arch/m32r/lib/memset.S | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/m32r/lib/memset.S b/arch/m32r/lib/memset.S deleted file mode 100644 index e7f45e6c73f5..000000000000 --- a/arch/m32r/lib/memset.S +++ /dev/null | |||
| @@ -1,179 +0,0 @@ | |||
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | ||
| 2 | /* | ||
| 3 | * linux/arch/m32r/lib/memset.S | ||
| 4 | * | ||
| 5 | * Copyright (C) 2001,2002 Hiroyuki Kondo, and Hirokazu Takata | ||
| 6 | * Copyright (C) 2004 Hirokazu Takata | ||
| 7 | * | ||
| 8 | * void *memset(void *dst, int val, int len); | ||
| 9 | * | ||
| 10 | * dst: r0 | ||
| 11 | * val: r1 | ||
| 12 | * len: r2 | ||
| 13 | * ret: r0 | ||
| 14 | * | ||
| 15 | */ | ||
| 16 | |||
| 17 | .text | ||
| 18 | .global memset | ||
| 19 | |||
| 20 | #ifdef CONFIG_ISA_DUAL_ISSUE | ||
| 21 | |||
| 22 | .align 4 | ||
| 23 | memset: | ||
| 24 | mv r4, r0 || cmpz r2 | ||
| 25 | jc r14 | ||
| 26 | cmpui r2, #16 | ||
| 27 | bnc qword_align_check | ||
| 28 | cmpui r2, #4 | ||
| 29 | bc byte_set | ||
| 30 | word_align_check: /* len >= 4 */ | ||
| 31 | and3 r3, r4, #3 | ||
| 32 | beqz r3, word_set | ||
| 33 | addi r3, #-4 | ||
| 34 | neg r3, r3 /* r3 = -(r3 - 4) */ | ||
| 35 | align_word: | ||
| 36 | stb r1, @r4 || addi r4, #1 | ||
| 37 | addi r2, #-1 || addi r3, #-1 | ||
| 38 | bnez r3, align_word | ||
| 39 | cmpui r2, #4 | ||
| 40 | bc byte_set | ||
| 41 | word_set: | ||
| 42 | and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ | ||
| 43 | sll3 r3, r1, #8 | ||
| 44 | or r1, r3 || addi r4, #-4 | ||
| 45 | sll3 r3, r1, #16 | ||
| 46 | or r1, r3 || addi r2, #-4 | ||
| 47 | word_set_loop: | ||
| 48 | st r1, @+r4 || addi r2, #-4 | ||
| 49 | bgtz r2, word_set_loop | ||
| 50 | bnez r2, byte_set_wrap | ||
| 51 | st r1, @+r4 | ||
| 52 | jmp r14 | ||
| 53 | |||
| 54 | qword_align_check: /* len >= 16 */ | ||
| 55 | and3 r3, r4, #15 | ||
| 56 | bnez r3, word_align_check | ||
| 57 | qword_set: | ||
| 58 | and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ | ||
| 59 | sll3 r3, r1, #8 | ||
| 60 | or r1, r3 || addi r4, #-4 | ||
| 61 | sll3 r3, r1, #16 | ||
| 62 | or r1, r3 || ldi r5, #16 | ||
| 63 | qword_set_loop: | ||
| 64 | ld r3, @(4,r4) /* cache line allocate */ | ||
| 65 | st r1, @+r4 || addi r2, #-16 | ||
| 66 | st r1, @+r4 || cmpu r2, r5 | ||
| 67 | st r1, @+r4 | ||
| 68 | st r1, @+r4 | ||
| 69 | bnc qword_set_loop || cmpz r2 | ||
| 70 | jc r14 | ||
| 71 | set_remainder: | ||
| 72 | cmpui r2, #4 | ||
| 73 | bc byte_set_wrap1 | ||
| 74 | addi r2, #-4 | ||
| 75 | bra word_set_loop | ||
| 76 | |||
| 77 | byte_set_wrap: | ||
| 78 | addi r2, #4 | ||
| 79 | cmpz r2 | ||
| 80 | jc r14 | ||
| 81 | byte_set_wrap1: | ||
| 82 | addi r4, #4 | ||
| 83 | #if defined(CONFIG_ISA_M32R2) | ||
| 84 | byte_set: | ||
| 85 | addi r2, #-1 || stb r1, @r4+ | ||
| 86 | bnez r2, byte_set | ||
| 87 | #elif defined(CONFIG_ISA_M32R) | ||
| 88 | byte_set: | ||
| 89 | addi r2, #-1 || stb r1, @r4 | ||
| 90 | addi r4, #1 | ||
| 91 | bnez r2, byte_set | ||
| 92 | #else | ||
| 93 | #error unknown isa configuration | ||
| 94 | #endif | ||
| 95 | end_memset: | ||
| 96 | jmp r14 | ||
| 97 | |||
| 98 | #else /* not CONFIG_ISA_DUAL_ISSUE */ | ||
| 99 | |||
| 100 | .align 4 | ||
| 101 | memset: | ||
| 102 | mv r4, r0 | ||
| 103 | beqz r2, end_memset | ||
| 104 | cmpui r2, #16 | ||
| 105 | bnc qword_align_check | ||
| 106 | cmpui r2, #4 | ||
| 107 | bc byte_set | ||
| 108 | word_align_check: /* len >= 4 */ | ||
| 109 | and3 r3, r4, #3 | ||
| 110 | beqz r3, word_set | ||
| 111 | addi r3, #-4 | ||
| 112 | neg r3, r3 /* r3 = -(r3 - 4) */ | ||
| 113 | align_word: | ||
| 114 | stb r1, @r4 | ||
| 115 | addi r4, #1 | ||
| 116 | addi r2, #-1 | ||
| 117 | addi r3, #-1 | ||
| 118 | bnez r3, align_word | ||
| 119 | cmpui r2, #4 | ||
| 120 | bc byte_set | ||
| 121 | word_set: | ||
| 122 | and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ | ||
| 123 | sll3 r3, r1, #8 | ||
| 124 | or r1, r3 | ||
| 125 | sll3 r3, r1, #16 | ||
| 126 | or r1, r3 | ||
| 127 | addi r2, #-4 | ||
| 128 | addi r4, #-4 | ||
| 129 | word_set_loop: | ||
| 130 | st r1, @+r4 | ||
| 131 | addi r2, #-4 | ||
| 132 | bgtz r2, word_set_loop | ||
| 133 | bnez r2, byte_set_wrap | ||
| 134 | st r1, @+r4 | ||
| 135 | jmp r14 | ||
| 136 | |||
| 137 | qword_align_check: /* len >= 16 */ | ||
| 138 | and3 r3, r4, #15 | ||
| 139 | bnez r3, word_align_check | ||
| 140 | qword_set: | ||
| 141 | and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ | ||
| 142 | sll3 r3, r1, #8 | ||
| 143 | or r1, r3 | ||
| 144 | sll3 r3, r1, #16 | ||
| 145 | or r1, r3 | ||
| 146 | addi r4, #-4 | ||
| 147 | qword_set_loop: | ||
| 148 | ld r3, @(4,r4) /* cache line allocate */ | ||
| 149 | addi r2, #-16 | ||
| 150 | st r1, @+r4 | ||
| 151 | st r1, @+r4 | ||
| 152 | cmpui r2, #16 | ||
| 153 | st r1, @+r4 | ||
| 154 | st r1, @+r4 | ||
| 155 | bnc qword_set_loop | ||
| 156 | bnez r2, set_remainder | ||
| 157 | jmp r14 | ||
| 158 | set_remainder: | ||
| 159 | cmpui r2, #4 | ||
| 160 | bc byte_set_wrap1 | ||
| 161 | addi r2, #-4 | ||
| 162 | bra word_set_loop | ||
| 163 | |||
| 164 | byte_set_wrap: | ||
| 165 | addi r2, #4 | ||
| 166 | beqz r2, end_memset | ||
| 167 | byte_set_wrap1: | ||
| 168 | addi r4, #4 | ||
| 169 | byte_set: | ||
| 170 | addi r2, #-1 | ||
| 171 | stb r1, @r4 | ||
| 172 | addi r4, #1 | ||
| 173 | bnez r2, byte_set | ||
| 174 | end_memset: | ||
| 175 | jmp r14 | ||
| 176 | |||
| 177 | #endif /* not CONFIG_ISA_DUAL_ISSUE */ | ||
| 178 | |||
| 179 | .end | ||