ack/mach/i80/libmon/head_em.s

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ArmAsm
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1987-01-28 15:06:28 +00:00
.define hol0, argv, envp, begbss
.define .ignmask,.reghp,.trapproc,.fra
.define .retadr,.retadr1,.areg,.bcreg,.tmp1
.define block1, block2, block3
.define .stop
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
.sect .text
lxi h,0x1000 ! stack will grow from 0x1000 downwards
sphl
lxi d,endbss
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lxi h,begbss ! clear bss
mov a,e
sub l
mov e,a
mov a,d
sbb h
mov d,a ! de now contains endbss - begbss
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mvi c,0
2: mov m,c
inx h
dcx d
mov a,e
ora d
jnz 2b
lxi h,envp ! call main
push h
lxi h,argv
push h
lxi h,0
push h
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call __m_a_i_n
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.stop: jmp 0xfb52
.sect .bss
begbss:
.trapproc: .space 2
.ignmask: .space 2
.sect .data
hol0: .space 8
.reghp: .data2 endbss
argv: .data2 0
envp: .data2 0
.retadr: .space 2 ! used to save return address
.retadr1: .space 2 ! reserve
.bcreg: .space 2 ! used to save localbase
.areg: .space 1
.tmp1: .space 2
.fra: .space 8 ! 8 bytes function return area
block1: .space 4 ! used by 32 bits divide and
block2: .space 4 ! multiply routines
block3: .space 4