static char *sccsid = "@(#)fex3.c	34.2 10/13/80";

#include "global.h"
#include <vadvise.h>

/* chkarg ***************************************************************/
/* This insures that there are at least expnum arguments passed to the	*/
/* BCD function that calls this.  If there are fewer, nil arguments	*/
/* are pushed onto the name stack and np adjusted accordingly.		*/
#ifdef chkarg
#undef chkarg
#endif
chkarg(expnum,string)
int	expnum;			/* expected number of args	*/
char string[];
{
	register struct argent *work;
	register r10,r9,r8;
	register struct argent *lbot, *np;
	saveonly(1);

	for(work = np,np = lbot + expnum; work < np; )
		work++->val = nil;
}


/*
 *Ndumplisp -- create executable version of current state of this lisp.
 */
#include "a.out.h"

asm("	.globl	Dlast")
lispval
Ndumplisp()
{
	register struct exec *workp;
	register lispval argptr, temp;
	register char *fname;
	extern lispval reborn;
	struct exec work, old;
	extern etext;
	extern int dmpmode,holend,curhbeg,usehole;
	extern int end;
	int descrip, des2, count, ax,mode;
	char tbuf[BUFSIZ];
	snpand(4);


#ifndef UNIXTS
	vadvise(VA_ANOM);
#endif

	/* dump mode is kept in decimal (which looks like octal in dmpmode)
	   and is changeable via (sstatus dumpmode n) where n is 413 or 410
	   base 10		
	*/
	if(dmpmode == 413) mode = 0413;
	else mode = 0410;

	workp = &work;
	workp->a_magic	= mode;
	if(usehole)
		workp->a_text = curhbeg & (~PAGRND);
	else
	workp->a_text	= ((((unsigned) (&holend)) - 1) & (~PAGRND)) + PAGSIZ;
#ifndef VMS
	workp->a_data	= (unsigned) sbrk(0) - workp->a_text;
#else
	workp->a_data   = ((int)&end) - workp->a_text;
#endif
	workp->a_bss	= 0;
	workp->a_syms	= 0;
	workp->a_entry	= (unsigned) gstart();
	workp->a_trsize	= 0;
	workp->a_drsize	= 0;

	fname = "savedlisp"; /*set defaults*/
	reborn = CNIL;
	argptr = lbot->val;
	if (argptr != nil) {
		temp = argptr->d.car;
		if((TYPE(temp))==ATOM)
			fname = temp->a.pname;
	}
	des2 = open(gstab(),0);
	if(des2 >= 0) {
		if(read(des2,&old,sizeof(old))>=0)
			work.a_syms = old.a_syms;
	}
	descrip=creat(fname,0777); /*doit!*/
	if(-1==write(descrip,workp,sizeof(work)))
	{
		close(descrip);
		error("Dumplisp failed",FALSE);
	}
	if(mode == 0413) lseek(descrip,PAGSIZ,0); 
	if( -1==write(descrip,0,workp->a_text)    ||
	    -1==write(descrip,workp->a_text,workp->a_data) ) {
		close(descrip);
		error("Dumplisp failed",FALSE);
	}
	if(des2>0  && work.a_syms) {
		count = old.a_text + old.a_data + sizeof(old);
		if(-1==lseek(des2,count,0))
			error("Could not seek to stab",FALSE);
		asm("Dlast:");
		for(count = old.a_syms;count > 0; count -=BUFSIZ) {
			ax = read(des2,tbuf,BUFSIZ);
			if(ax==0) {
				printf("Unexpected end of syms",count);
				fflush(stdout);
				break;
			}
			if(ax >  0)
				write(descrip,tbuf,ax);
			else 
				error("Failure to write dumplisp stab",FALSE);
		}
	}
	close(descrip);
	if(des2>0) close(des2);
	reborn = 0;

#ifndef UNIXTS
	vadvise(VA_NORM);
#endif
	return(nil);
}

lispval
Nndumplisp()
{
	register struct exec *workp;
	register lispval argptr, temp;
	register char *fname;
	extern lispval reborn;
	struct exec work, old;
	extern etext;
	extern int dmpmode,holend,curhbeg,usehole;
	int descrip, des2, count, ax,mode;
	char tbuf[BUFSIZ];
	snpand(4);


#ifndef UNIXTS
	vadvise(VA_ANOM);
#endif

	/* dump mode is kept in decimal (which looks like octal in dmpmode)
	   and is changeable via (sstatus dumpmode n) where n is 413 or 410
	   base 10		
	*/
	if(dmpmode == 413) mode = 0413;
	else mode = 0410;

	workp = &work;
	workp->a_magic	= mode;
	if(usehole)
		workp->a_text = curhbeg & (~PAGRND);
	else
	workp->a_text	= ((((unsigned) (&holend)) - 1) & (~PAGRND)) + PAGSIZ;
	workp->a_data	= (unsigned) sbrk(0) - workp->a_text;
	workp->a_bss	= 0;
	workp->a_syms	= 0;
	workp->a_entry	= (unsigned) gstart();
	workp->a_trsize	= 0;
	workp->a_drsize	= 0;

	fname = "savedlisp"; /*set defaults*/
	reborn = CNIL;
	argptr = lbot->val;
	if (argptr != nil) {
		temp = argptr->d.car;
		if((TYPE(temp))==ATOM)
			fname = temp->a.pname;
	}
	des2 = open(gstab(),0);
	if(des2 >= 0) {
		if(read(des2,&old,sizeof(old))>=0)
			work.a_syms = old.a_syms;
	}
	descrip=creat(fname,0777); /*doit!*/
	if(-1==write(descrip,workp,sizeof(work)))
	{
		close(descrip);
		error("Dumplisp failed",FALSE);
	}
	if(mode == 0413) lseek(descrip,PAGSIZ,0); 
	if( -1==write(descrip,0,workp->a_text)    ||
	    -1==write(descrip,workp->a_text,workp->a_data) ) {
		close(descrip);
		error("Dumplisp failed",FALSE);
	}
	if(des2>0  && work.a_syms) {
		count = old.a_text + old.a_data + (old.a_magic == 0413 ? PAGSIZ 
							       : sizeof(old));
		if(-1==lseek(des2,count,0))
			error("Could not seek to stab",FALSE);
		for(count = old.a_syms;count > 0; count -=BUFSIZ) {
			ax = read(des2,tbuf,(count < BUFSIZ ? count : BUFSIZ));
			if(ax==0) {
				printf("Unexpected end of syms",count);
				fflush(stdout);
				break;
			} else if(ax >  0)
				write(descrip,tbuf,ax);
			else 
				error("Failure to write dumplisp stab",FALSE);
		}
		if(-1 == lseek(des2,
			(old.a_magic == 0413 ? PAGSIZ : sizeof(old))
			+ old.a_text + old.a_data
				+ old.a_trsize + old.a_drsize + old.a_syms,
			       0))
			error(" Could not seek to string table ",FALSE);
		for( ax = 1 ; ax > 0;) {
		     ax = read(des2,tbuf,BUFSIZ);
		     if(ax > 0)
			 write(descrip,tbuf,ax);
		     else if (ax < 0)
			 error("Error in string table read ",FALSE);
		}
	}
	close(descrip);
	if(des2>0) close(des2);
	reborn = 0;

#ifndef UNIXTS
	vadvise(VA_NORM);
#endif
	return(nil);
}
lispval
typred(typ,ptr)
int 	typ;
lispval	ptr;

{   int tx;
	if ((tx = TYPE(ptr)) == typ) return(tatom);
	if ((tx == INT) && (typ == ATOM)) return(tatom);
	return(nil);
}
lispval
Nfunction()
{
	register lispval handy;

	snpand(1);
	handy = lbot->val->d.car;
	if(TYPE(handy)==ATOM && handy->a.fnbnd!=nil)
		return(handy->a.fnbnd);
	else
		return(handy);
}