ack/mach/i86/libsys/head_em.s

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ArmAsm
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1985-01-07 13:57:25 +00:00
.define begtext,begdata,begbss
.define hol0,.reghp,.limhp,.trppc,.ignmask
.define ERANGE,ESET,EHEAP,ECASE,EILLINS,EODDZ
1985-01-07 13:57:25 +00:00
ERANGE = 1
ESET = 2
EIDIVZ = 6
EHEAP = 17
EILLINS = 18
EODDZ = 19
ECASE = 20
base = 0x01C0
topmem = 0xFFF0
.org topmem-16
.extern __n_line
maxmem:
__n_line:
.space 16
.errnz __n_line-0xFFE0
.base base
.text
begtext:
cld
xor ax,ax
mov ss,ax
mov ds,ax
mov es,ax
mov (2),cs
mov (0),.diverr
mov sp,maxmem
mov di,begbss
mov cx,[[endbss-begbss]/2]&0x7FFF
! xor ax,ax ! ax still is 0
rep stos
mov ax,envp
push ax
mov ax,argv
push ax
mov ax,1
push ax
call _m_a_i_n
call .stop
.diverr:
push ax
mov ax,EIDIVZ
call .error
pop ax
iret
.data
begdata:
hol0:
.word 0,0
.word 0,0
argv:
.word 3f
envp:
.word 0
3:
.asciz "PROGRAM"
.reghp:
.word endbss
.limhp:
.word endbss
.ignmask:
.word 0
.trppc:
.word 0
.bss
begbss: