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1 jermar 1 
#
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# Copyright (C) 2001-2004 Jakub Jermar
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# All rights reserved.
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#
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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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# are met:
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#
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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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# - 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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#   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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#   derived from this software without specific prior written permission.
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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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# 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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# 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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# 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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# 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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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#include <arch/asm/macro.h>
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#define STACK_SPACE	128
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.text
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.set noat
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.set noreorder
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.set nomacro
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.global kernel_image_start
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.global tlb_refill_entry
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.global cache_error_entry
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.global exception_entry
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.org 0x0
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kernel_image_start:
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tlb_refill_entry:
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    j tlb_refill_handler
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    nop
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.org 0x100
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cache_error_entry:
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    j cache_error_handler
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    nop
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.org 0x180
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exception_entry:
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exception_handler:
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    sub $29, STACK_SPACE
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    REGISTERS_STORE $29
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    jal exception
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    nop
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    REGISTERS_LOAD $29
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    add $29, STACK_SPACE
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    eret
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tlb_refill_handler:
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    sub $29, STACK_SPACE
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    REGISTERS_STORE $29
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    jal tlb_refill
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    nop
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    REGISTERS_LOAD $29
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    add $29, STACK_SPACE
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    eret
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cache_error_handler:
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    sub $29, STACK_SPACE
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    REGISTERS_STORE $29
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    jal cache_error
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    nop
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    REGISTERS_LOAD $29
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    add $29, STACK_SPACE
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    eret