Minix1.1/usr/lib/crtso.s

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| This is the C run-time start-off routine.  It's job is to take the
| arguments as put on the stack by EXEC, and to parse them and set them up the
| way _main expects them.

.globl _main, _exit, crtso, _environ
.globl begtext, begdata, begbss, endtext, enddata, endbss
.text
begtext:
crtso:		mov	bx,sp
		mov	cx,(bx)
		add	bx,*2
		mov	ax,cx
		inc	ax
		shl	ax,#1
		add	ax,bx
		mov	_environ,ax	| save envp in environ
		push	ax	| push environ
		push	bx	| push argv
		push	cx	| push argc
		call	_main
		add	sp,*6
		push	ax	| push exit status
		call	_exit

.data
begdata:
_environ:	.word 0
.bss
begbss: