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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 | #include <arch/trap/trap.h> |
29 | #include <arch/trap/trap.h> |
30 | #include <arch/trap/trap_table.h> |
30 | #include <arch/trap/trap_table.h> |
31 | #include <arch/trap/regwin.h> |
31 | #include <arch/trap/regwin.h> |
32 | #include <arch/trap/interrupt.h> |
32 | #include <arch/trap/interrupt.h> |
33 | #include <arch/asm.h> |
33 | #include <arch/asm.h> |
34 | #include <memstr.h> |
34 | #include <memstr.h> |
35 | #include <debug.h> |
35 | #include <debug.h> |
36 | #include <arch/types.h> |
36 | #include <arch/types.h> |
37 | #include <typedefs.h> |
37 | #include <typedefs.h> |
- | 38 | #include <arch/drivers/tick.h> |
|
38 | 39 | ||
39 | /** Initialize trap table. */ |
40 | /** Initialize trap table. */ |
40 | void trap_init(void) |
41 | void trap_init(void) |
41 | { |
42 | { |
42 | /* |
43 | /* |
43 | * Save kernel provided trap handlers. |
44 | * Save kernel provided trap handlers. |
44 | */ |
45 | */ |
45 | memcpy((void *) trap_table_save, (void *) trap_table, TRAP_TABLE_SIZE); |
46 | memcpy((void *) trap_table_save, (void *) trap_table, TRAP_TABLE_SIZE); |
46 | 47 | ||
47 | /* |
48 | /* |
48 | * Copy OFW's trap table into kernel. |
49 | * Copy OFW's trap table into kernel. |
49 | */ |
50 | */ |
50 | memcpy((void *) trap_table, (void *) tba_read(), TRAP_TABLE_SIZE); |
51 | memcpy((void *) trap_table, (void *) tba_read(), TRAP_TABLE_SIZE); |
51 | 52 | ||
52 | /* |
53 | /* |
53 | * Install kernel-provided handlers. |
54 | * Install kernel-provided handlers. |
54 | */ |
55 | */ |
55 | trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, false); |
56 | trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, false); |
56 | trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, false); |
57 | trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, false); |
57 | trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, false); |
58 | trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, false); |
58 | trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, true); |
59 | trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, true); |
59 | trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, true); |
60 | trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, true); |
60 | trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, true); |
61 | trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, true); |
- | 62 | trap_install_handler(TT_INTERRUPT_LEVEL_1, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 63 | trap_install_handler(TT_INTERRUPT_LEVEL_2, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 64 | trap_install_handler(TT_INTERRUPT_LEVEL_3, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 65 | trap_install_handler(TT_INTERRUPT_LEVEL_4, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 66 | trap_install_handler(TT_INTERRUPT_LEVEL_5, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 67 | trap_install_handler(TT_INTERRUPT_LEVEL_6, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
61 | - | ||
- | 68 | trap_install_handler(TT_INTERRUPT_LEVEL_7, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 69 | trap_install_handler(TT_INTERRUPT_LEVEL_8, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 70 | trap_install_handler(TT_INTERRUPT_LEVEL_9, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 71 | trap_install_handler(TT_INTERRUPT_LEVEL_10, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 72 | trap_install_handler(TT_INTERRUPT_LEVEL_11, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 73 | trap_install_handler(TT_INTERRUPT_LEVEL_12, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 74 | trap_install_handler(TT_INTERRUPT_LEVEL_13, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 75 | trap_install_handler(TT_INTERRUPT_LEVEL_14, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
- | 76 | trap_install_handler(TT_INTERRUPT_LEVEL_15, INTERRUPT_LEVEL_N_HANDLER_SIZE, false); |
|
62 | trap_install_handler(TT_INTERRUPT_VECTOR_TRAP, INTERRUPT_VECTOR_TRAP_HANDLER_SIZE, false); |
77 | trap_install_handler(TT_INTERRUPT_VECTOR_TRAP, INTERRUPT_VECTOR_TRAP_HANDLER_SIZE, false); |
63 | } |
78 | } |
64 | 79 | ||
65 | /** Copy trap handler to active trap table. |
80 | /** Copy trap handler to active trap table. |
66 | * |
81 | * |
67 | * The handler is copied from trap_table_kernel to trap_handler. |
82 | * The handler is copied from trap_table_kernel to trap_handler. |
68 | * |
83 | * |
69 | * @param tt Trap type. An index that uniquelly identifies handler code. |
84 | * @param tt Trap type. An index that uniquelly identifies handler code. |
70 | * @param len Length of the handler in bytes. Must be multiple of TRAP_TABLE_ENTRY_SIZE (i.e. 32). |
85 | * @param len Length of the handler in bytes. Must be multiple of TRAP_TABLE_ENTRY_SIZE (i.e. 32). |
71 | * @param tlnonz If false, tt is considered from the lower half of trap table. If true, the upper half is chosen. |
86 | * @param tlnonz If false, tt is considered from the lower half of trap table. If true, the upper half is chosen. |
72 | */ |
87 | */ |
73 | void trap_install_handler(index_t tt, size_t len, bool tlnonz) |
88 | void trap_install_handler(index_t tt, size_t len, bool tlnonz) |
74 | { |
89 | { |
75 | count_t cnt; |
90 | count_t cnt; |
76 | int i; |
91 | int i; |
77 | 92 | ||
78 | ASSERT(tt < TRAP_TABLE_ENTRY_COUNT/2); |
93 | ASSERT(tt < TRAP_TABLE_ENTRY_COUNT/2); |
79 | ASSERT(len % TRAP_TABLE_ENTRY_SIZE == 0); |
94 | ASSERT(len % TRAP_TABLE_ENTRY_SIZE == 0); |
80 | 95 | ||
81 | if (tlnonz) |
96 | if (tlnonz) |
82 | tt += TRAP_TABLE_ENTRY_COUNT/2; |
97 | tt += TRAP_TABLE_ENTRY_COUNT/2; |
83 | 98 | ||
84 | cnt = len/TRAP_TABLE_ENTRY_SIZE; |
99 | cnt = len/TRAP_TABLE_ENTRY_SIZE; |
85 | 100 | ||
86 | for (i = tt; i < tt + cnt; i++) { |
101 | for (i = tt; i < tt + cnt; i++) { |
87 | trap_table[i] = trap_table_save[i]; |
102 | trap_table[i] = trap_table_save[i]; |
88 | } |
103 | } |
89 | } |
104 | } |
90 | 105 |