114 lines
1.5 KiB
ArmAsm
114 lines
1.5 KiB
ArmAsm
.sect .text ; .sect .rom; .sect .data; .sect .bss
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.define .trpdivz
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.define .trpilin
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.define .trpcase
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.define .trprang
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.define .trpset
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.define .trpnofp
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.define .trpheap
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.define .trp
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.define .stop
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.sect .text
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.extern .trpdivz
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.extern .trpilin
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.extern .trpcase
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.extern .trprang
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.extern .trpset
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.extern .trpnofp
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.extern .trpheap
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.extern .trp
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.trpdivz:
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mov ax,6
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mov dx,.Mdivz
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jmp .Trp
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.trpilin:
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mov ax,18
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mov dx,.Milin
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jmp .Trp
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.trpcase:
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mov ax,20
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mov dx,.Mcase
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jmp .Trp
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.trprang:
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mov ax,1
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mov dx,.Mrang
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jmp .Trp
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.trpset:
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mov ax,2
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mov dx,.Mset
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jmp .Trp
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.trpnofp:
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mov ax,18
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mov dx,.Mnofp
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jmp .Trp
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.trpheap:
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mov ax,17
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mov dx,.Mheap
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jmp .Trp
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.Trp:
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xor bx,bx
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.extern .trppc
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xchg bx,(.trppc)
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test bx,bx
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jz 2f
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push ax
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call (bx)
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pop ax
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ret
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2:
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mov bx,22
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push bx
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push dx
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mov ax,2
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push ax
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call _write
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.stop:
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call _exit
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.trp:
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mov dx,ax
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cmp dx,21
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jae 1f
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sal dx,1
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mov bx,.Mtable
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add bx,dx
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mov bx,(bx)
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test bx,bx
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jz 1f
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mov dx,bx
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jmp 2f
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1:
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mov bx,.Mtrp+14
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mov cx,6
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mov dx,ax
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1:
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and dx,7
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add dx,'0'
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movb (bx),dl
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dec bx
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sar dx,1
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sar dx,1
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sar dx,1
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loop 1b
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mov dx,.Mtrp
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2:
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jmp .Trp
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.sect .rom
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.Mtable:
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.data2 0, .Mrang, .Mset, 0, 0, 0, .Mdivz, 0
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.data2 0, 0, 0, 0, 0, 0, 0, 0
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.data2 0, .Mheap, .Milin, .Milin, .Mcase
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.Mdivz: .asciz "Error: Division by 0 \n"
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.Milin: .asciz "Illegal EM instruct'n\n"
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.Mcase: .asciz "Err in EM case instr \n"
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.Mrang: .asciz "Variable out of range\n"
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.Mset: .asciz "Err in EM set instr \n"
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.Mnofp: .asciz "Floating pt not impl.\n"
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.Mheap: .asciz "Heap overflow \n"
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.Mtrp: .asciz "EM trap 0000000 octal\n"
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