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#
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#
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# Copyright (C) 2005 Jakub Jermar
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# Copyright (C) 2005 Jakub Jermar
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# All rights reserved.
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# All rights reserved.
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#
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#
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# Redistribution and use in source and binary forms, with or without
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# modification, are permitted provided that the following conditions
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# are met:
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# are met:
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#
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#
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# - Redistributions of source code must retain the above copyright
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#   derived from this software without specific prior written permission.
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#
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#
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/**
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/**
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 * This file contains two trap tables.
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 * This file contains two trap tables.
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 * First, trap_table, is the one wich contains handlers implemented by
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 * First, trap_table, is the one wich contains handlers implemented by
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 * kernel. During initialization, these handlers are copied out to
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 * kernel. During initialization, these handlers are copied out to
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 * the second trap table, trap_table_save, and the first table is
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 * the second trap table, trap_table_save, and the first table is
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 * overwritten with copy of OFW's own trap table. The copy is then patched
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 * overwritten with copy of OFW's own trap table. The copy is then patched
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 * from the trap_table_save.
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 * from the trap_table_save.
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 *
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 *
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 * This arrangement is beneficial because kernel handlers stay on their
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 * This arrangement is beneficial because kernel handlers stay on their
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 * link-time addresses which is good for debugging.
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 * link-time addresses which is good for debugging.
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 */
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 */
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.text
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.text
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#include <arch/trap/trap_table.h>
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#include <arch/trap/trap_table.h>
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#include <arch/trap/regwin.h>
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#include <arch/trap/regwin.h>
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#include <arch/trap/interrupt.h>
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#define TABLE_SIZE	TRAP_TABLE_SIZE
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#define TABLE_SIZE	TRAP_TABLE_SIZE
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#define ENTRY_SIZE	TRAP_TABLE_ENTRY_SIZE
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#define ENTRY_SIZE	TRAP_TABLE_ENTRY_SIZE
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/*
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/*
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 * Kernel trap table.
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 * Kernel trap table.
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 */
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 */
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.align TABLE_SIZE
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.align TABLE_SIZE
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.global trap_table
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.global trap_table
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trap_table:
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trap_table:
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/* TT = 0x24, TL = 0 *, clean_window handler */
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/* TT = 0x24, TL = 0, clean_window handler */
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.org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE
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.org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE
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.global clean_window_handler
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.global clean_window_handler
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clean_window_handler:
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clean_window_handler:
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	CLEAN_WINDOW_HANDLER
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	CLEAN_WINDOW_HANDLER
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- 
 
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/* TT = 0x60, TL = 0, interrupt_vector_trap handler */
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.org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE
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.global interrupt_vector_trap_handler
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interrupt_vector_trap_handler:
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	INTERRUPT_VECTOR_TRAP_HANDLER
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/* TT = 0x80, TL = 0 *, spill_0_normal handler */
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/* TT = 0x80, TL = 0, spill_0_normal handler */
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.org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE
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.org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE
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.global spill_0_normal
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.global spill_0_normal
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spill_0_normal:
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spill_0_normal:
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	SPILL_NORMAL_HANDLER
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	SPILL_NORMAL_HANDLER
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/* TT = 0xc0, TL = 0 *, fill_0_normal handler */
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/* TT = 0xc0, TL = 0, fill_0_normal handler */
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.org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE
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.org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE
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.global fill_0_normal
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fill_0_normal:
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fill_0_normal:
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	FILL_NORMAL_HANDLER
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	FILL_NORMAL_HANDLER
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/*
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/*
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 * Software traps for TL=0.
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 * Handlers for TL>0.
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 */
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 */
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.org trap_table + 256*ENTRY_SIZE
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tl_0_software_traps:
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/* Reserved area. */
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/* TT = 0x24, TL > 0, clean_window handler */
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.org trap_table + 384*ENTRY_SIZE
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.org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE
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.global clean_window_handler_high
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clean_window_handler_high:
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.space 128*ENTRY_SIZE, 0
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	CLEAN_WINDOW_HANDLER
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/*
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 * Hardware interrupts for TL>0.
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 */
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.org trap_table + 512*ENTRY_SIZE
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tl_non_0_hardware_traps:
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/*
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 * Register window spill/fill traps for TL>0.
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/* TT = 0x80, TL > 0, spill_0_normal handler */
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 */
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.org trap_table + 640*ENTRY_SIZE
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.org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE
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.global spill_0_normal_high
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tl_non_0_regwin_traps:
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spill_0_normal_high:
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	SPILL_NORMAL_HANDLER
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/*
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 * Software traps for TL>0.
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 */
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.org trap_table + 768*ENTRY_SIZE
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tl_non_0_software_traps:
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/* Reserved area. */
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/* TT = 0xc0, TL > 0, fill_0_normal handler */
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.org trap_table + 896*ENTRY_SIZE
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.org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE
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.space 128*ENTRY_SIZE, 0
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.global fill_0_normal_high
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fill_0_normal_high:
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	FILL_NORMAL_HANDLER
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/*
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/*
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 * Save trap table.
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 * Save trap table.
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 */
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 */
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.align TABLE_SIZE
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.global trap_table_save
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.global trap_table_save
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trap_table_save:
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trap_table_save:
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	.space TABLE_SIZE, 0
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	.space TABLE_SIZE, 0
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