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1 | # |
1 | # |
2 | # Copyright (C) 2005 Jakub Jermar |
2 | # Copyright (C) 2005 Jakub Jermar |
3 | # All rights reserved. |
3 | # All rights reserved. |
4 | # |
4 | # |
5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
7 | # are met: |
7 | # are met: |
8 | # |
8 | # |
9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
13 | # documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | # derived from this software without specific prior written permission. |
16 | # |
16 | # |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # |
27 | # |
28 | 28 | ||
29 | .section K_TEXT_START |
29 | .section K_TEXT_START |
30 | .global k_text_start |
30 | .global k_text_start |
31 | k_text_start: |
31 | k_text_start: |
32 | 32 | ||
33 | .global kernel_image_start |
33 | .global kernel_image_start |
34 | 34 | ||
35 | stack0: |
35 | stack0: |
36 | kernel_image_start: |
36 | kernel_image_start: |
37 | .auto |
37 | .auto |
38 | # initialize PSR |
38 | # initialize PSR |
39 | mov psr.l = r0 |
39 | mov psr.l = r0 |
40 | 40 | ||
41 | # initialize register stack |
41 | # initialize register stack |
42 | mov ar.rsc = r0 |
42 | mov ar.rsc = r0 |
- | 43 | mov ar.bspstore = r0 |
|
43 | loadrs |
44 | loadrs |
44 | 45 | ||
45 | .explicit |
46 | .explicit |
46 | # initialize memory stack to some sane value |
47 | # initialize memory stack to some sane value |
47 | movl r12 = stack0 ;; |
48 | movl r12 = stack0 ;; |
48 | add r12 = - 16, r12 /* allocate a scratch area on the stack */ |
49 | add r12 = - 16, r12 /* allocate a scratch area on the stack */ |
49 | 50 | ||
50 | # initialize gp (Global Pointer) register |
51 | # initialize gp (Global Pointer) register |
51 | movl r1=k_text_start |
52 | movl r1=k_text_start |
52 | 53 | ||
53 | # |
54 | # |
54 | # Initialize hardcoded_* variables. |
55 | # Initialize hardcoded_* variables. |
55 | # (IA-64 port doesn't get these values from linker.) |
56 | # (IA-64 port doesn't get these values from linker.) |
56 | # |
57 | # |
57 | movl r8 = k_text_start ;; |
58 | movl r8 = k_text_start ;; |
58 | movl r9 = k_text_end ;; |
59 | movl r9 = k_text_end ;; |
59 | sub r8 = r9, r8 |
60 | sub r8 = r9, r8 |
60 | addl r10 = @gprel(hardcoded_ktext_size), gp;; |
61 | addl r10 = @gprel(hardcoded_ktext_size), gp;; |
61 | st4 [r10] = r8 ;; |
62 | st4 [r10] = r8 ;; |
62 | 63 | ||
63 | movl r8 = k_data_start ;; |
64 | movl r8 = k_data_start ;; |
64 | movl r9 = k_data_end ;; |
65 | movl r9 = k_data_end ;; |
65 | sub r8 = r9, r8 |
66 | sub r8 = r9, r8 |
66 | addl r10 = @gprel(hardcoded_kdata_size), gp;; |
67 | addl r10 = @gprel(hardcoded_kdata_size), gp;; |
67 | st4 [r10] = r8 ;; |
68 | st4 [r10] = r8 ;; |
68 | 69 | ||
69 | addl r10 = @gprel(hardcoded_load_address), gp;; |
70 | addl r10 = @gprel(hardcoded_load_address), gp;; |
70 | st8 [r10] = r1 |
71 | st8 [r10] = r1 |
71 | 72 | ||
72 | br.call.sptk.many b0=main_bsp |
73 | br.call.sptk.many b0=main_bsp |
73 | 74 | ||
74 | 0: |
75 | 0: |
75 | br 0b |
76 | br 0b |
76 | 77 | ||
77 | .section K_TEXT_END |
78 | .section K_TEXT_END |
78 | .global k_text_end |
79 | .global k_text_end |
79 | k_text_end: |
80 | k_text_end: |
80 | 81 | ||
81 | .section K_DATA_START |
82 | .section K_DATA_START |
82 | .global k_data_start |
83 | .global k_data_start |
83 | k_data_start: |
84 | k_data_start: |
84 | 85 | ||
85 | .section K_DATA_END |
86 | .section K_DATA_END |
86 | .global k_data_end |
87 | .global k_data_end |
87 | k_data_end: |
88 | k_data_end: |
88 | 89 |