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#include "lib9.h"
#include "isa.h"
#include "interp.h"
#include "raise.h"
#include <kernel.h>
static void
newlink(Link *l, char *fn, int sig, Type *t)
{
l->name = malloc(strlen(fn)+1);
if(l->name == nil)
error(exNomem);
strcpy(l->name, fn);
l->sig = sig;
l->frame = t;
}
void
runtime(Module *m, Link *l, char *fn, int sig, void (*runt)(void*), Type *t)
{
USED(m);
newlink(l, fn, sig, t);
l->u.runt = runt;
}
void
mlink(Module *m, Link* l, uchar *fn, int sig, int pc, Type *t)
{
newlink(l, (char*)fn, sig, t);
l->u.pc = m->prog+pc;
}
static int
linkm(Module *m, Modlink *ml, int i, Import *ldt)
{
Link *l;
int sig;
char e[ERRMAX];
sig = ldt->sig;
for(l = m->ext; l->name; l++)
if(strcmp(ldt->name, l->name) == 0)
break;
if(l == nil) {
snprint(e, sizeof(e), "link failed fn %s->%s() not implemented", m->name, ldt->name);
goto bad;
}
if(l->sig != sig) {
snprint(e, sizeof(e), "link typecheck %s->%s() %ux/%ux",
m->name, ldt->name, l->sig, sig);
goto bad;
}
ml->links[i].u = l->u;
ml->links[i].frame = l->frame;
return 0;
bad:
kwerrstr(e);
print("%s\n", e);
return -1;
}
Modlink*
mklinkmod(Module *m, int n)
{
Heap *h;
Modlink *ml;
h = nheap(sizeof(Modlink)+(n-1)*sizeof(ml->links[0]));
h->t = &Tmodlink;
Tmodlink.ref++;
ml = H2D(Modlink*, h);
ml->nlinks = n;
ml->m = m;
ml->prog = m->prog;
ml->type = m->type;
ml->compiled = m->compiled;
ml->MP = H;
ml->data = nil;
return ml;
}
Modlink*
linkmod(Module *m, Import *ldt, int mkmp)
{
Type *t;
Heap *h;
int i;
Modlink *ml;
Import *l;
if(m == nil)
return H;
for(i = 0, l = ldt; l->name != nil; i++, l++)
;
ml = mklinkmod(m, i);
if(mkmp){
if(m->rt == DYNMOD)
newdyndata(ml);
else if(mkmp && m->origmp != H && m->ntype > 0) {
t = m->type[0];
h = nheap(t->size);
h->t = t;
t->ref++;
ml->MP = H2D(uchar*, h);
newmp(ml->MP, m->origmp, t);
}
}
for(i = 0, l = ldt; l->name != nil; i++, l++) {
if(linkm(m, ml, i, l) < 0){
destroy(ml);
return H;
}
}
return ml;
}
void
destroylinks(Module *m)
{
Link *l;
for(l = m->ext; l->name; l++)
free(l->name);
free(m->ext);
}
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