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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 | /** |
29 | /** |
30 | * This file contains two trap tables. |
30 | * This file contains two trap tables. |
31 | * First, trap_table, is the one wich contains handlers implemented by |
31 | * First, trap_table, is the one wich contains handlers implemented by |
32 | * kernel. During initialization, these handlers are copied out to |
32 | * kernel. During initialization, these handlers are copied out to |
33 | * the second trap table, trap_table_save, and the first table is |
33 | * the second trap table, trap_table_save, and the first table is |
34 | * overwritten with copy of OFW's own trap table. The copy is then patched |
34 | * overwritten with copy of OFW's own trap table. The copy is then patched |
35 | * from the trap_table_save. |
35 | * from the trap_table_save. |
36 | * |
36 | * |
37 | * This arrangement is beneficial because kernel handlers stay on their |
37 | * This arrangement is beneficial because kernel handlers stay on their |
38 | * link-time addresses which is good for debugging. |
38 | * link-time addresses which is good for debugging. |
39 | */ |
39 | */ |
40 | 40 | ||
41 | .text |
41 | .text |
42 | 42 | ||
43 | #include <arch/trap/trap_table.h> |
43 | #include <arch/trap/trap_table.h> |
44 | #include <arch/trap/regwin.h> |
44 | #include <arch/trap/regwin.h> |
- | 45 | #include <arch/trap/interrupt.h> |
|
45 | 46 | ||
46 | #define TABLE_SIZE TRAP_TABLE_SIZE |
47 | #define TABLE_SIZE TRAP_TABLE_SIZE |
47 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
48 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
48 | 49 | ||
49 | /* |
50 | /* |
50 | * Kernel trap table. |
51 | * Kernel trap table. |
51 | */ |
52 | */ |
52 | .align TABLE_SIZE |
53 | .align TABLE_SIZE |
53 | .global trap_table |
54 | .global trap_table |
54 | trap_table: |
55 | trap_table: |
55 | 56 | ||
56 | /* TT = 0x24, TL = 0 *, clean_window handler */ |
57 | /* TT = 0x24, TL = 0, clean_window handler */ |
57 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
58 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
58 | .global clean_window_handler |
59 | .global clean_window_handler |
59 | clean_window_handler: |
60 | clean_window_handler: |
60 | CLEAN_WINDOW_HANDLER |
61 | CLEAN_WINDOW_HANDLER |
61 | 62 | ||
- | 63 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
|
- | 64 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
|
- | 65 | .global interrupt_vector_trap_handler |
|
- | 66 | interrupt_vector_trap_handler: |
|
- | 67 | INTERRUPT_VECTOR_TRAP_HANDLER |
|
- | 68 | ||
62 | /* TT = 0x80, TL = 0 *, spill_0_normal handler */ |
69 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
63 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
70 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
64 | .global spill_0_normal |
71 | .global spill_0_normal |
65 | spill_0_normal: |
72 | spill_0_normal: |
66 | SPILL_NORMAL_HANDLER |
73 | SPILL_NORMAL_HANDLER |
67 | 74 | ||
68 | /* TT = 0xc0, TL = 0 *, fill_0_normal handler */ |
75 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
69 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
76 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
- | 77 | .global fill_0_normal |
|
70 | fill_0_normal: |
78 | fill_0_normal: |
71 | FILL_NORMAL_HANDLER |
79 | FILL_NORMAL_HANDLER |
72 | 80 | ||
73 | /* |
81 | /* |
74 | * Software traps for TL=0. |
82 | * Handlers for TL>0. |
75 | */ |
83 | */ |
76 | .org trap_table + 256*ENTRY_SIZE |
- | |
77 | tl_0_software_traps: |
- | |
78 | 84 | ||
79 | /* Reserved area. */ |
85 | /* TT = 0x24, TL > 0, clean_window handler */ |
80 | .org trap_table + 384*ENTRY_SIZE |
86 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
- | 87 | .global clean_window_handler_high |
|
- | 88 | clean_window_handler_high: |
|
81 | .space 128*ENTRY_SIZE, 0 |
89 | CLEAN_WINDOW_HANDLER |
82 | 90 | ||
83 | /* |
- | |
84 | * Hardware interrupts for TL>0. |
- | |
85 | */ |
- | |
86 | .org trap_table + 512*ENTRY_SIZE |
- | |
87 | tl_non_0_hardware_traps: |
- | |
88 | 91 | ||
89 | /* |
- | |
90 | * Register window spill/fill traps for TL>0. |
92 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
91 | */ |
93 | |
92 | .org trap_table + 640*ENTRY_SIZE |
94 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
- | 95 | .global spill_0_normal_high |
|
93 | tl_non_0_regwin_traps: |
96 | spill_0_normal_high: |
- | 97 | SPILL_NORMAL_HANDLER |
|
94 | 98 | ||
95 | /* |
- | |
96 | * Software traps for TL>0. |
- | |
97 | */ |
- | |
98 | .org trap_table + 768*ENTRY_SIZE |
- | |
99 | tl_non_0_software_traps: |
- | |
100 | 99 | ||
101 | /* Reserved area. */ |
100 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
102 | .org trap_table + 896*ENTRY_SIZE |
101 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
103 | .space 128*ENTRY_SIZE, 0 |
102 | .global fill_0_normal_high |
- | 103 | fill_0_normal_high: |
|
- | 104 | FILL_NORMAL_HANDLER |
|
- | 105 | ||
104 | 106 | ||
105 | 107 | ||
106 | /* |
108 | /* |
107 | * Save trap table. |
109 | * Save trap table. |
108 | */ |
110 | */ |
- | 111 | .align TABLE_SIZE |
|
109 | .global trap_table_save |
112 | .global trap_table_save |
110 | trap_table_save: |
113 | trap_table_save: |
111 | .space TABLE_SIZE, 0 |
114 | .space TABLE_SIZE, 0 |
112 | 115 |