ack/mach/i80/libmon/head_em.s
1991-03-06 14:26:16 +00:00

60 lines
1 KiB
ArmAsm

.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
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
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
call __m_a_i_n
.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