2015-08-04 21:52:48 +00:00
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.set noat
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.set noreorder
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.global _start
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.global FlushCache
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.global Exit
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.global SignalSema
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.global _start
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.global _exit
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.text
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nop
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nop
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FlushCache:
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li $3,100
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syscall
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jr $31
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nop
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Exit:
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li $3,4
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syscall
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jr $31
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nop
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SignalSema:
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li $3,66
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syscall
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jr $31
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nop
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nop
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nop
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_start:
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lui $2,%hi(_args_ptr)
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addiu $2,$2, %lo(_args_ptr)
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sw $4,($2)
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# Clear bss
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zerobss:
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lui $2,%hi(_fbss)
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lui $3,%hi(_end)
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addiu $2,$2,%lo(_fbss)
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addiu $3,$3,%lo(_end)
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loop:
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nop
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nop
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sq $0,($2)
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sltu $1,$2,$3
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bne $1,$0,loop
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addiu $2,$2,16
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# Thread
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lui $4,%hi(_gp)
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addiu $4,$4,%lo(_gp)
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lui $5,%hi(_stack)
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addiu $5,$5,%lo(_stack)
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lui $6,%hi(_stack_size)
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addiu $6,$6,%lo(_stack_size)
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lui $7,%hi(_args)
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addiu $7,$7,%lo(_args)
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lui $8,%hi(_root)
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addiu $8,$8,%lo(_root)
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move $28,$4
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addiu $3,$0,60
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syscall
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move $29, $2
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# Heap
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addiu $3,$0,61
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lui $4,%hi(_end)
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addiu $4,$4,%lo(_end)
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lui $5,%hi(_heap_size)
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addiu $5,$5,%lo(_heap_size)
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syscall
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nop
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# Cache
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jal FlushCache
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move $4,$0
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# Jump main
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ei
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lui $2,%hi(_args_ptr)
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addiu $2,$2,%lo(_args_ptr)
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lw $3,($2)
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lui $2,%hi(_args)
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addiu $2,$2,%lo(_args)
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lw $4, ($2)
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jal main
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addiu $5, $2, 4
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_root:
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_exit:
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# ???
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lui $2,%hi(_args_ptr)
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addiu $2,$2,%lo(_args_ptr)
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lw $3,($2)
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jal SignalSema
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lw $4,($3)
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# Exit
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addiu $3,$0,35
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syscall
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nop
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.bss
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.align 6
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_args: .space 256+16*4+4
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.data
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_args_ptr:
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.space 4
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