ack/lang/m2/libm2/head_m2.e
1988-02-19 15:54:01 +00:00

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#
;
; (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
; See the copyright notice in the ACK home directory, in the file "Copyright".
;
;
; Module: Modula-2 runtime startoff
; Author: Ceriel J.H. Jacobs
; Version: $Header$
;
mes 2,EM_WSIZE,EM_PSIZE
#define STACKSIZE 2048 /* maximum stack size for a coroutine */
exa _environ
exa _argv
exa _argc
exa _CurrentProcess
exa _MainProcess
exa _StackBase
exa _MainLB
exa _StackSize
exp $_catch
_environ
bss EM_PSIZE,0,0
_argv
bss EM_PSIZE,0,0
_argc
bss EM_WSIZE,0,0
_CurrentProcess
bss EM_PSIZE,0,0
_MainProcess
bss EM_PSIZE,0,0
_StackBase
bss EM_PSIZE,0,0
_MainLB
bss EM_PSIZE,0,0
_StackSize
bss EM_WSIZE,0,0
mainroutine
bss 2*EM_PSIZE,0,0
exp $m_a_i_n
pro $m_a_i_n, STACKSIZE
loc STACKSIZE
ste _StackSize
lor 0
lae _MainLB
sti EM_PSIZE
lal -EM_WSIZE
adp EM_WSIZE
lae _StackBase
sti EM_PSIZE
lae mainroutine
adp 2*EM_PSIZE
dup EM_PSIZE
lae _CurrentProcess
sti EM_PSIZE
lae _MainProcess
sti EM_PSIZE
lal EM_WSIZE+EM_PSIZE
loi EM_PSIZE
lae _environ ; save environment pointer
sti EM_PSIZE
lal EM_WSIZE
loi EM_PSIZE
lae _argv ; save argument pointer
sti EM_PSIZE
lol 0
ste _argc ; save argument count
lpi $_catch
sig
asp EM_PSIZE
cal $_M2M
cal $_halt
loc 0 ; should not get here
ret EM_WSIZE
end