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| 1 | # |
1 | # |
| 2 | # Copyright (c) 2006 Martin Decky |
2 | # Copyright (c) 2006 Martin Decky |
| 3 | # Copyright (c) 2006 Jakub Jermar |
3 | # Copyright (c) 2006 Jakub Jermar |
| 4 | # All rights reserved. |
4 | # All rights reserved. |
| 5 | # |
5 | # |
| 6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
| 7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
| 8 | # are met: |
8 | # are met: |
| 9 | # |
9 | # |
| 10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
| 11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
| 12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
| 13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
| 14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
| 15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
| 16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
| 17 | # |
17 | # |
| 18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | # |
28 | # |
| 29 | 29 | ||
| 30 | #include <stack.h> |
30 | #include <stack.h> |
| 31 | 31 | ||
| 32 | .section BOOTSTRAP, "ax" |
32 | .section BOOTSTRAP, "ax" |
| 33 | 33 | ||
| 34 | .global start |
34 | .global start |
| 35 | start: |
35 | start: |
| 36 | 36 | ||
| 37 | mov ar.rsc = r0 |
37 | mov ar.rsc = r0 |
| 38 | # movl r8 = (VRN_KERNEL << VRN_SHIFT) ;; |
38 | # movl r8 = (VRN_KERNEL << VRN_SHIFT) ;; |
| 39 | movl r1 = 0x4400000 |
39 | movl r1 = 0x4400000 |
| 40 | movl r8 = initial_stack ;; |
40 | movl r8 = initial_stack ;; |
| 41 | mov ar.bspstore = r8 |
41 | mov ar.bspstore = r8 |
| 42 | loadrs |
42 | loadrs |
| 43 | 43 | ||
| 44 | # initialize memory stack to some sane value |
44 | # initialize memory stack to some sane value |
| 45 | movl r12 = initial_stack_top ;; |
45 | movl r12 = initial_stack_top ;; |
| 46 | 46 | ||
| 47 | add r12 = -16, r12 /* allocate a scratch area on the stack */ |
47 | add r12 = -16, r12 /* allocate a scratch area on the stack */ |
| 48 | 48 | ||
| 49 | # initialize gp (Global Pointer) register |
49 | # initialize gp (Global Pointer) register |
| 50 | #movl r1 = _hardcoded_load_address |
50 | #movl r1 = _hardcoded_load_address |
| 51 | 51 | ||
| 52 | ssm (1 << 19) ;; /* Disable f32 - f127 */ |
52 | ssm (1 << 19) ;; /* Disable f32 - f127 */ |
| 53 | srlz.i |
53 | srlz.i |
| 54 | srlz.d ;; |
54 | srlz.d ;; |
| 55 | 55 | ||
| 56 | movl r18 = bootstrap ;; |
56 | movl r18 = bootstrap ;; |
| 57 | mov b1 = r18 ;; |
57 | mov b1 = r18 ;; |
| 58 | br.call.sptk.many b0 = b1 |
58 | br.call.sptk.many b0 = b1 |
| 59 | 59 | ||
| 60 | .bss #on this line is ".bss", it cannot be seen in my mcedit :-( |
60 | .bss #on this line is ".bss", it cannot be seen in my mcedit :-( |
| 61 | 61 | ||
| 62 | 62 | ||
| 63 | .align 8192 |
63 | .align 8192 |
| 64 | 64 | ||
| 65 | initial_stack: |
65 | initial_stack: |
| 66 | .space 8192 |
66 | .space 8192 |
| 67 | 67 | ||
| 68 | initial_stack_top: |
68 | initial_stack_top: |
| 69 | 69 | ||