WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/sparc64/src/trap/trap.c


/*
 * Copyright (C) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <arch/trap/trap.h>
#include <arch/trap/trap_table.h>
#include <arch/trap/regwin.h>
#include <arch/trap/exception.h>
#include <arch/trap/interrupt.h>
#include <arch/trap/mmu.h>
#include <arch/asm.h>
#include <memstr.h>
#include <debug.h>
#include <arch/types.h>
#include <typedefs.h>
#include <arch/drivers/tick.h>
 
/** Initialize trap table. */
void trap_init(void)
{
    /*
     * Save kernel provided trap handlers.
     */
    memcpy((void *) trap_table_save, (void *) trap_table, TRAP_TABLE_SIZE);
 
    /*
     * Copy OFW's trap table into kernel.
     */
    memcpy((void *) trap_table, (void *) tba_read(), TRAP_TABLE_SIZE);
   
    /*
     * Install kernel-provided handlers.
     */
    trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, false);
    trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, false);
    trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, false);
    trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, false);
    trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, false);
    trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, true);
    trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, true);
    trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, true);
    trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, true);
    trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, true);
    trap_install_handler(TT_INTERRUPT_LEVEL_1, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_2, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_3, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_4, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_5, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_6, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_7, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_8, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_9, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_10, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_11, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_12, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_13, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_14, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_LEVEL_15, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
    trap_install_handler(TT_INTERRUPT_VECTOR_TRAP, INTERRUPT_VECTOR_TRAP_HANDLER_SIZE, false);
 
    /*
     * Kernel must become independent on Open Firmware calls before MMU handlers are enabled.
     */
/*
    trap_install_handler(TT_FAST_INSTRUCTION_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, false);
    trap_install_handler(TT_FAST_DATA_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, false);
    trap_install_handler(TT_FAST_DATA_ACCESS_PROTECTION, FAST_MMU_HANDLER_SIZE, false);
    trap_install_handler(TT_FAST_INSTRUCTION_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, true);
    trap_install_handler(TT_FAST_DATA_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, true);
    trap_install_handler(TT_FAST_DATA_ACCESS_PROTECTION, FAST_MMU_HANDLER_SIZE, true);
*/
 
}
 
/** Copy trap handler to active trap table.
 *
 * The handler is copied from trap_table_kernel to trap_handler.
 *
 * @param tt Trap type. An index that uniquelly identifies handler code.
 * @param len Length of the handler in bytes. Must be multiple of TRAP_TABLE_ENTRY_SIZE (i.e. 32).
 * @param tlnonz If false, tt is considered from the lower half of trap table. If true, the upper half is chosen.
 */
void trap_install_handler(index_t tt, size_t len, bool tlnonz)
{
    count_t cnt;
    int i;
 
    ASSERT(tt < TRAP_TABLE_ENTRY_COUNT/2);
    ASSERT(len % TRAP_TABLE_ENTRY_SIZE == 0);
 
    if (tlnonz)
        tt += TRAP_TABLE_ENTRY_COUNT/2;
 
    cnt = len/TRAP_TABLE_ENTRY_SIZE;
   
    for (i = tt; i < tt + cnt; i++) {
        trap_table[i] = trap_table_save[i];
    }  
}
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/sparc64/src/trap/trap.c – Rev 667 → 867

Rev 667		Rev 867
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/exception.h>	32	#include <arch/trap/exception.h>
33	#include <arch/trap/interrupt.h>	33	#include <arch/trap/interrupt.h>
-		34	#include <arch/trap/mmu.h>
34	#include <arch/asm.h>	35	#include <arch/asm.h>
35	#include <memstr.h>	36	#include <memstr.h>
36	#include <debug.h>	37	#include <debug.h>
37	#include <arch/types.h>	38	#include <arch/types.h>
38	#include <typedefs.h>	39	#include <typedefs.h>
39	#include <arch/drivers/tick.h>	40	#include <arch/drivers/tick.h>
40		41
41	/** Initialize trap table. */	42	/** Initialize trap table. */
42	void trap_init(void)	43	void trap_init(void)
43	{	44	{
44	/*	45	/*
45	* Save kernel provided trap handlers.	46	* Save kernel provided trap handlers.
46	*/	47	*/
47	memcpy((void ) trap_table_save, (void ) trap_table, TRAP_TABLE_SIZE);	48	memcpy((void ) trap_table_save, (void ) trap_table, TRAP_TABLE_SIZE);
48		49
49	/*	50	/*
50	* Copy OFW's trap table into kernel.	51	* Copy OFW's trap table into kernel.
51	*/	52	*/
52	memcpy((void ) trap_table, (void ) tba_read(), TRAP_TABLE_SIZE);	53	memcpy((void ) trap_table, (void ) tba_read(), TRAP_TABLE_SIZE);
53		54
54	/*	55	/*
55	* Install kernel-provided handlers.	56	* Install kernel-provided handlers.
56	*/	57	*/
57	trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, false);	58	trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, false);
58	trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, false);	59	trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, false);
59	trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, false);	60	trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, false);
60	trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, false);	61	trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, false);
61	trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, false);	62	trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, false);
62	trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, true);	63	trap_install_handler(TT_INSTRUCTION_ACCESS_EXCEPTION, TRAP_TABLE_ENTRY_SIZE, true);
63	trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, true);	64	trap_install_handler(TT_CLEAN_WINDOW, CLEAN_WINDOW_HANDLER_SIZE, true);
64	trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, true);	65	trap_install_handler(TT_MEM_ADDRESS_NOT_ALIGNED, TRAP_TABLE_ENTRY_SIZE, true);
65	trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, true);	66	trap_install_handler(TT_SPILL_0_NORMAL, SPILL_HANDLER_SIZE, true);
66	trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, true);	67	trap_install_handler(TT_FILL_0_NORMAL, FILL_HANDLER_SIZE, true);
67	trap_install_handler(TT_INTERRUPT_LEVEL_1, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	68	trap_install_handler(TT_INTERRUPT_LEVEL_1, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
68	trap_install_handler(TT_INTERRUPT_LEVEL_2, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	69	trap_install_handler(TT_INTERRUPT_LEVEL_2, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
69	trap_install_handler(TT_INTERRUPT_LEVEL_3, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	70	trap_install_handler(TT_INTERRUPT_LEVEL_3, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
70	trap_install_handler(TT_INTERRUPT_LEVEL_4, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	71	trap_install_handler(TT_INTERRUPT_LEVEL_4, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
71	trap_install_handler(TT_INTERRUPT_LEVEL_5, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	72	trap_install_handler(TT_INTERRUPT_LEVEL_5, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
72	trap_install_handler(TT_INTERRUPT_LEVEL_6, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	73	trap_install_handler(TT_INTERRUPT_LEVEL_6, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
73	trap_install_handler(TT_INTERRUPT_LEVEL_7, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	74	trap_install_handler(TT_INTERRUPT_LEVEL_7, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
74	trap_install_handler(TT_INTERRUPT_LEVEL_8, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	75	trap_install_handler(TT_INTERRUPT_LEVEL_8, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
75	trap_install_handler(TT_INTERRUPT_LEVEL_9, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	76	trap_install_handler(TT_INTERRUPT_LEVEL_9, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
76	trap_install_handler(TT_INTERRUPT_LEVEL_10, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	77	trap_install_handler(TT_INTERRUPT_LEVEL_10, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
77	trap_install_handler(TT_INTERRUPT_LEVEL_11, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	78	trap_install_handler(TT_INTERRUPT_LEVEL_11, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
78	trap_install_handler(TT_INTERRUPT_LEVEL_12, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	79	trap_install_handler(TT_INTERRUPT_LEVEL_12, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
79	trap_install_handler(TT_INTERRUPT_LEVEL_13, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	80	trap_install_handler(TT_INTERRUPT_LEVEL_13, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
80	trap_install_handler(TT_INTERRUPT_LEVEL_14, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	81	trap_install_handler(TT_INTERRUPT_LEVEL_14, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
81	trap_install_handler(TT_INTERRUPT_LEVEL_15, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);	82	trap_install_handler(TT_INTERRUPT_LEVEL_15, INTERRUPT_LEVEL_N_HANDLER_SIZE, false);
82	trap_install_handler(TT_INTERRUPT_VECTOR_TRAP, INTERRUPT_VECTOR_TRAP_HANDLER_SIZE, false);	83	trap_install_handler(TT_INTERRUPT_VECTOR_TRAP, INTERRUPT_VECTOR_TRAP_HANDLER_SIZE, false);
-		84
-		85	/*
-		86	* Kernel must become independent on Open Firmware calls before MMU handlers are enabled.
-		87	*/
-		88	/*
-		89	trap_install_handler(TT_FAST_INSTRUCTION_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, false);
-		90	trap_install_handler(TT_FAST_DATA_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, false);
-		91	trap_install_handler(TT_FAST_DATA_ACCESS_PROTECTION, FAST_MMU_HANDLER_SIZE, false);
-		92	trap_install_handler(TT_FAST_INSTRUCTION_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, true);
-		93	trap_install_handler(TT_FAST_DATA_ACCESS_MMU_MISS, FAST_MMU_HANDLER_SIZE, true);
-		94	trap_install_handler(TT_FAST_DATA_ACCESS_PROTECTION, FAST_MMU_HANDLER_SIZE, true);
-		95	*/
-		96
83	}	97	}
84		98
85	/** Copy trap handler to active trap table.	99	/** Copy trap handler to active trap table.
86	*	100	*
87	* The handler is copied from trap_table_kernel to trap_handler.	101	* The handler is copied from trap_table_kernel to trap_handler.
88	*	102	*
89	* @param tt Trap type. An index that uniquelly identifies handler code.	103	* @param tt Trap type. An index that uniquelly identifies handler code.
90	* @param len Length of the handler in bytes. Must be multiple of TRAP_TABLE_ENTRY_SIZE (i.e. 32).	104	* @param len Length of the handler in bytes. Must be multiple of TRAP_TABLE_ENTRY_SIZE (i.e. 32).
91	* @param tlnonz If false, tt is considered from the lower half of trap table. If true, the upper half is chosen.	105	* @param tlnonz If false, tt is considered from the lower half of trap table. If true, the upper half is chosen.
92	*/	106	*/
93	void trap_install_handler(index_t tt, size_t len, bool tlnonz)	107	void trap_install_handler(index_t tt, size_t len, bool tlnonz)
94	{	108	{
95	count_t cnt;	109	count_t cnt;
96	int i;	110	int i;
97		111
98	ASSERT(tt < TRAP_TABLE_ENTRY_COUNT/2);	112	ASSERT(tt < TRAP_TABLE_ENTRY_COUNT/2);
99	ASSERT(len % TRAP_TABLE_ENTRY_SIZE == 0);	113	ASSERT(len % TRAP_TABLE_ENTRY_SIZE == 0);
100		114
101	if (tlnonz)	115	if (tlnonz)
102	tt += TRAP_TABLE_ENTRY_COUNT/2;	116	tt += TRAP_TABLE_ENTRY_COUNT/2;
103		117
104	cnt = len/TRAP_TABLE_ENTRY_SIZE;	118	cnt = len/TRAP_TABLE_ENTRY_SIZE;
105		119
106	for (i = tt; i < tt + cnt; i++) {	120	for (i = tt; i < tt + cnt; i++) {
107	trap_table[i] = trap_table_save[i];	121	trap_table[i] = trap_table_save[i];
108	}	122	}
109	}	123	}
110		124