ack/mach/proto/ncg/state.c
George Koehler e04166b85d More prototypes, less register in mach/proto/ncg
Files that #include "equiv.h" must do so after including "data.h", now
that a function prototype in equiv.h uses type rl_p from data.h.

Adjust style, changing some `for(...)` to `for (...)`.  The style in
mach/proto/ncg is less than consistent; the big annoyance now is that
some files want tabs at 4 spaces, others want tabs at 8 spaces.
2017-11-13 12:44:17 -05:00

72 lines
1.8 KiB
C

#ifndef NORCSID
static char rcsid[] = "$Id$";
#endif
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include "param.h"
#include "tables.h"
#include "types.h"
#include <cgg_cg.h>
#include "data.h"
#include "result.h"
#include "state.h"
#include "extern.h"
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*
* Author: Hans van Staveren
*/
extern int nstab; /* salloc.c */
static void bmove(short *, short *, int);
void savestatus(state_p sp) {
sp->st_sh = stackheight;
bmove((short *)fakestack,(short *)sp->st_fs,stackheight*sizeof(token_t));
sp->st_na = nallreg;
bmove((short *)allreg,(short *)sp->st_ar,nallreg*sizeof(int));
sp->st_ct = curtoken;
bmove((short *)dollar,(short *)sp->st_do,LONGESTPATTERN*sizeof(result_t));
bmove((short *)machregs,(short *)sp->st_mr,NREGS*sizeof(struct reginfo));
sp->st_ne = nemlines;
bmove((short *)emlines,(short *)sp->st_el,nemlines*sizeof(struct emline));
sp->st_em = emp;
sp->st_se = saveemp;
sp->st_tl = tokpatlen;
sp->st_ns = nstab;
}
void restorestatus(state_p sp) {
stackheight = sp->st_sh;
bmove((short *)sp->st_fs,(short *)fakestack,stackheight*sizeof(token_t));
nallreg = sp->st_na;
bmove((short *)sp->st_ar,(short *)allreg,nallreg*sizeof(int));
curtoken = sp->st_ct;
bmove((short *)sp->st_do,(short *)dollar,LONGESTPATTERN*sizeof(result_t));
bmove((short *)sp->st_mr,(short *)machregs,NREGS*sizeof(struct reginfo));
nemlines = sp->st_ne;
bmove((short *)sp->st_el,(short *)emlines,nemlines*sizeof(struct emline));
emp = sp->st_em;
saveemp = sp->st_se;
tokpatlen = sp->st_tl;
popstr(sp->st_ns);
}
static void bmove(short *from, short *to, int nbytes) {
if (nbytes<=0)
return;
assert(sizeof(short)==2 && (nbytes&1)==0);
nbytes>>=1;
do
*to++ = *from++;
while (--nbytes);
}