| [b7b5f83] | 1 | #
|
|---|
| 2 | # Copyright (C) 2006 Martin Decky
|
|---|
| 3 | # All rights reserved.
|
|---|
| 4 | #
|
|---|
| 5 | # Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | # modification, are permitted provided that the following conditions
|
|---|
| 7 | # are met:
|
|---|
| 8 | #
|
|---|
| 9 | # - Redistributions of source code must retain the above copyright
|
|---|
| 10 | # notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | # - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | # notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | # documentation and/or other materials provided with the distribution.
|
|---|
| 14 | # - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | # derived from this software without specific prior written permission.
|
|---|
| 16 | #
|
|---|
| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | #
|
|---|
| 28 |
|
|---|
| 29 | .text
|
|---|
| 30 |
|
|---|
| 31 | .global halt
|
|---|
| 32 | .global memcpy
|
|---|
| 33 | .global jump_to_kernel
|
|---|
| 34 |
|
|---|
| 35 | halt:
|
|---|
| 36 | b halt
|
|---|
| 37 | nop
|
|---|
| 38 |
|
|---|
| 39 | memcpy:
|
|---|
| [c82950a] | 40 | .register %g2, #scratch
|
|---|
| 41 | .register %g3, #scratch
|
|---|
| 42 | add %o1, 7, %g1
|
|---|
| 43 | and %g1, -8, %g1
|
|---|
| 44 | cmp %o1, %g1
|
|---|
| 45 | be,pn %xcc, 3f
|
|---|
| 46 | add %o0, 7, %g1
|
|---|
| 47 | mov 0, %g3
|
|---|
| 48 | 0:
|
|---|
| 49 | brz,pn %o2, 2f
|
|---|
| 50 | mov 0, %g2
|
|---|
| 51 | 1:
|
|---|
| 52 | ldub [%g3 + %o1], %g1
|
|---|
| 53 | add %g2, 1, %g2
|
|---|
| 54 | cmp %o2, %g2
|
|---|
| 55 | stb %g1, [%g3 + %o0]
|
|---|
| 56 | bne,pt %xcc, 1b
|
|---|
| 57 | mov %g2, %g3
|
|---|
| 58 | 2:
|
|---|
| 59 | jmp %o7 + 8 ! exit point
|
|---|
| 60 | mov %o1, %o0
|
|---|
| 61 | 3:
|
|---|
| 62 | and %g1, -8, %g1
|
|---|
| 63 | cmp %o0, %g1
|
|---|
| 64 | bne,pt %xcc, 0b
|
|---|
| 65 | mov 0, %g3
|
|---|
| 66 | srlx %o2, 3, %g4
|
|---|
| 67 | brz,pn %g4, 5f
|
|---|
| 68 | mov 0, %g5
|
|---|
| 69 | 4:
|
|---|
| 70 | sllx %g3, 3, %g2
|
|---|
| 71 | add %g5, 1, %g3
|
|---|
| 72 | ldx [%o1 + %g2], %g1
|
|---|
| 73 | mov %g3, %g5
|
|---|
| 74 | cmp %g4, %g3
|
|---|
| 75 | bne,pt %xcc, 4b
|
|---|
| 76 | stx %g1, [%o0 + %g2]
|
|---|
| 77 | 5:
|
|---|
| 78 | and %o2, 7, %o2
|
|---|
| 79 | brz,pn %o2, 2b
|
|---|
| 80 | sllx %g4, 3, %g1
|
|---|
| 81 | mov 0, %g2
|
|---|
| 82 | add %g1, %o0, %o0
|
|---|
| 83 | add %g1, %o1, %g4
|
|---|
| 84 | mov 0, %g3
|
|---|
| 85 | 6:
|
|---|
| 86 | ldub [%g2 + %g4], %g1
|
|---|
| 87 | stb %g1, [%g2 + %o0]
|
|---|
| 88 | add %g3, 1, %g2
|
|---|
| 89 | cmp %o2, %g2
|
|---|
| 90 | bne,pt %xcc, 6b
|
|---|
| 91 | mov %g2, %g3
|
|---|
| 92 |
|
|---|
| 93 | jmp %o7 + 8 ! exit point
|
|---|
| 94 | mov %o1, %o0
|
|---|
| [b7b5f83] | 95 |
|
|---|
| 96 | jump_to_kernel:
|
|---|
| [fec35544] | 97 | set ofw, %l0
|
|---|
| 98 | jmp %o0 ! jump to kernel
|
|---|
| 99 | ldx [%l0], %o4 ! pass OpenFirmware address in %o4
|
|---|
