88 lines
1.2 KiB
ArmAsm
88 lines
1.2 KiB
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
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.define begtext,begdata,begbss,syscal
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.define hol0,.reghp,.limhp,.trppc,.ignmask
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.define ERANGE,ESET,EHEAP,ECASE,EILLINS,EIDIVZ,EODDZ
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.define EXIT,BRK
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.extern endbss
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ERANGE = 1
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ESET = 2
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EIDIVZ = 6
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EHEAP = 17
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EILLINS = 18
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EODDZ = 19
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ECASE = 20
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.sect .text
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.data1 0353
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.data1 0176 ! jmp to begtext in 2 bytes. Assembler generates 3
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! bytes.
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syscal: jmp 1f
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grow: jmp 2f
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jmp 2f
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.data2 -277, -277, -277, -277, -277, -277
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2:
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mov ax,2088
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1:
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int 5
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jmp 1f
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.space 100
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1:
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ret
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begtext:
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mov bx,sp
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mov cx,(bx)
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add bx,2
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mov ax,cx
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inc ax
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shl ax,1
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add ax,bx
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push ax
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push bx
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push cx
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xor bp,bp
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mov bx,endbss
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mov cx,9
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add bx,1024
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shr bx,cl
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shl bx,cl
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call grow
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xor cx,cx
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push cx
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call __sbrk
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mov (.limhp),ax
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mov (.reghp),ax ! on Xenix, heap begins above stack!
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pop ax
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call __m_a_i_n
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EXIT:
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push ax
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call __exit
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BRK:
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jmp __brk
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.sect .data
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begdata:
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hol0:
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.data2 0,0
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.data2 0,0
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argv:
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.data2 3f
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envp:
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.data2 0
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3:
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.asciz "PROGRAM"
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.reghp:
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.data2 endbss
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.limhp:
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.data2 endbss
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.ignmask:
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.data2 0
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.trppc:
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.data2 0
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.sect .bss
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begbss:
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