65 lines
1.3 KiB
ArmAsm
65 lines
1.3 KiB
ArmAsm
/*
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* Copyright (c) 2015 Travis Geiselbrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <lk/asm.h>
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.section ".vectors", "ax"
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.globl _vectab
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_vectab:
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/* vector table here */
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# start vector
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brai start
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# user exception
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brai unhandled_exception
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# interrupt
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brai microblaze_irq
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# break
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brai unhandled_exception
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# hardware exception
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brai unhandled_exception
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# reserved for future
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.fill (0x50 - 0x28)
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.section ".text.boot"
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FUNCTION(start)
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# set the default stack
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addik r1, r0, default_stack_top
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# set up small data pointers
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addik r2, r0, _SDATA2_START__
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addik r13, r0, _SDATA_START__
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# set the processor mode to default
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mts rmsr, r0
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# zero out bss sections
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addik r5, r0, __bss_start
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addik r6, r0, 0
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rsubik r7, r5, __bss_end
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brlid r15, memset
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nop
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# arguments to main
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addik r5, r0, 1
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addik r6, r0, 2
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addik r7, r0, 3
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brlid r15, lk_main
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addik r8, r0, 4
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# shouldn't be here
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bri .
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FUNCTION(unhandled_exception)
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bri .
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.bss
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.align 3
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LOCAL_DATA(default_stack)
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.skip 4096
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LOCAL_DATA(default_stack_top)
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