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started working on interrupts
[psx_test1]
/
src
/
startup.S
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#include <regdef.h>
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.equ REG_BASE, 0x1f80
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.equ REG_GP0, 0x1810
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.equ REG_GP1, 0x1814
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.set noreorder
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.section .startup
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.extern main
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.extern _stacktop
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.extern _gp
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.extern _bss_start
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.extern _bss_end
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.globl _start
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_start:
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la sp, _stacktop
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la gp, _gp
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la t0, _bss_start
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la t1, _bss_end
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nop
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beq t0, t1, donebss
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nop
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zerobss:
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sw zero, (t0)
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addi t0, t0, 4
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nop
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bne t0, t1, zerobss
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nop
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donebss:
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jal main
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nop
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0: b 0b
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nop
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# vi:ts=8 sts=8 sw=8 ft=mips: