| 1 | #
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| 2 | # Copyright (C) 2005 Martin Decky
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| 3 | # All rights reserved.
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| 4 | #
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| 5 | # Redistribution and use in source and binary forms, with or without
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| 6 | # modification, are permitted provided that the following conditions
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| 7 | # are met:
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| 8 | #
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| 9 | # - Redistributions of source code must retain the above copyright
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| 10 | # notice, this list of conditions and the following disclaimer.
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| 11 | # - Redistributions in binary form must reproduce the above copyright
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| 12 | # notice, this list of conditions and the following disclaimer in the
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| 13 | # documentation and/or other materials provided with the distribution.
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| 14 | # - The name of the author may not be used to endorse or promote products
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| 15 | # derived from this software without specific prior written permission.
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| 16 | #
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | #
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| 28 |
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| 29 | #include <arch/asm/regname.h>
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| 30 |
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| 31 | .text
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| 32 |
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| 33 | .global cpu_halt
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| 34 | .global cpu_sleep
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| 35 | .global memsetb
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| 36 | .global memcpy
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| 37 |
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| 38 | cpu_halt:
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| 39 | b cpu_halt
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| 40 |
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| 41 | cpu_sleep:
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| 42 | b cpu_sleep
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| 43 |
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| 44 | memsetb:
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| 45 | rlwimi r5, r5, 8, 16, 23
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| 46 | rlwimi r5, r5, 16, 0, 15
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| 47 |
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| 48 | addi r14, r3, -4
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| 49 |
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| 50 | cmplwi 0, r4, 4
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| 51 | blt 7f
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| 52 |
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| 53 | stwu r5, 4(r14)
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| 54 | beqlr
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| 55 |
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| 56 | andi. r15, r14, 3
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| 57 | add r4, r15, r4
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| 58 | subf r14, r15, r14
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| 59 | srwi r15, r4, 2
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| 60 | mtctr r15
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| 61 |
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| 62 | bdz 6f
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| 63 |
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| 64 | 1:
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| 65 | stwu r5, 4(r14)
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| 66 | bdnz 1b
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| 67 |
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| 68 | 6:
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| 69 |
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| 70 | andi. r4, r4, 3
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| 71 |
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| 72 | 7:
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| 73 |
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| 74 | cmpwi 0, r4, 0
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| 75 | beqlr
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| 76 |
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| 77 | mtctr r4
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| 78 | addi r6, r6, 3
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| 79 |
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| 80 | 8:
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| 81 |
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| 82 | stbu r5, 1(r14)
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| 83 | bdnz 8b
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| 84 |
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| 85 | blr
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| 86 |
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| 87 | memcpy:
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| 88 | srwi. r7, r5, 3
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| 89 | addi r6, r3, -4
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| 90 | addi r4, r4, -4
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| 91 | beq 2f
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| 92 |
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| 93 | andi. r0, r6, 3
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| 94 | mtctr r7
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| 95 | bne 5f
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| 96 |
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| 97 | 1:
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| 98 |
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| 99 | lwz r7, 4(r4)
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| 100 | lwzu r8, 8(r4)
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| 101 | stw r7, 4(r6)
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| 102 | stwu r8, 8(r6)
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| 103 | bdnz 1b
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| 104 |
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| 105 | andi. r5, r5, 7
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| 106 |
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| 107 | 2:
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| 108 |
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| 109 | cmplwi 0, r5, 4
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| 110 | blt 3f
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| 111 |
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| 112 | lwzu r0, 4(r4)
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| 113 | addi r5, r5, -4
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| 114 | stwu r0, 4(r6)
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| 115 |
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| 116 | 3:
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| 117 |
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| 118 | cmpwi 0, r5, 0
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| 119 | beqlr
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| 120 | mtctr r5
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| 121 | addi r4, r4, 3
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| 122 | addi r6, r6, 3
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| 123 |
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| 124 | 4:
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| 125 |
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| 126 | lbzu r0, 1(r4)
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| 127 | stbu r0, 1(r6)
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| 128 | bdnz 4b
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| 129 | blr
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| 130 |
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| 131 | 5:
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| 132 |
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| 133 | subfic r0, r0, 4
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| 134 | mtctr r0
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| 135 |
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| 136 | 6:
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| 137 |
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| 138 | lbz r7, 4(r4)
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| 139 | addi r4, r4, 1
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| 140 | stb r7, 4(r6)
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| 141 | addi r6, r6, 1
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| 142 | bdnz 6b
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| 143 | subf r5, r0, r5
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| 144 | rlwinm. r7, r5, 32-3, 3, 31
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| 145 | beq 2b
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| 146 | mtctr r7
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| 147 | b 1b
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