63 lines
691 B
ArmAsm
63 lines
691 B
ArmAsm
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.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text
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.define _signal
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.extern _signal, cerror
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NSIG=16
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_signal: mov bx,sp
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mov cx,4(bx)
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mov bx,2(bx)
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cmp bx,NSIG
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jae 1f
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shl bx,1
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mov dx,dvect(bx)
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cmp cx,1
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jbe 2f
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mov dvect(bx),cx
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mov bx,sp
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mov 4(bx),enter
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mov bx,dx
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int 0xb0
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mov dx,bx
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mov bx,sp
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mov 4(bx),cx
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jb 3f
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jmp 4f
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2:
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int 0xb0
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jb 3f
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mov dvect(bx),cx
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4:
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cmp ax,1
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jbe 5f
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mov ax,dx
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5:
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ret
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1:
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mov ax,22
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3:
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jmp cerror
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enter:
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push bx
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push cx
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push dx
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push di
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push si
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mov bx,sp
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mov di,10(bx)
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mov 10(bx),ax
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push di
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shl di,1
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call dvect(di)
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add sp,2
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pop si
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pop di
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pop dx
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pop cx
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pop bx
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pop ax
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popf
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ret
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.sect .bss
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dvect: .space 2*NSIG
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.sect .text
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