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gc, ld: reflect support for PtrTo
R=ken2 CC=golang-dev https://golang.org/cl/4245055
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2d404c4bff
commit
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@ -10,6 +10,7 @@
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static NodeList* signatlist;
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static NodeList* signatlist;
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static Sym* dtypesym(Type*);
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static Sym* dtypesym(Type*);
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static Sym* weaktypesym(Type*);
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static int
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static int
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sigcmp(Sig *a, Sig *b)
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sigcmp(Sig *a, Sig *b)
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@ -570,9 +571,17 @@ dcommontype(Sym *s, int ot, Type *t)
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{
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{
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int i;
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int i;
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Sym *s1;
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Sym *s1;
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Sym *sptr;
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char *p;
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char *p;
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dowidth(t);
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dowidth(t);
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sptr = nil;
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if(t->sym != nil && !isptr[t->etype])
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sptr = dtypesym(ptrto(t));
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else
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sptr = weaktypesym(ptrto(t));
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s1 = dextratype(t);
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s1 = dextratype(t);
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// empty interface pointing at this type.
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// empty interface pointing at this type.
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@ -617,7 +626,7 @@ dcommontype(Sym *s, int ot, Type *t)
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ot = dsymptr(s, ot, s1, 0); // extraType
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ot = dsymptr(s, ot, s1, 0); // extraType
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else
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else
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ot = duintptr(s, ot, 0);
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ot = duintptr(s, ot, 0);
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ot = duintptr(s, ot, 0); // ptr type (placeholder for now)
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ot = dsymptr(s, ot, sptr, 0); // ptr to type
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return ot;
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return ot;
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}
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}
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@ -662,6 +671,25 @@ typename(Type *t)
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return n;
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return n;
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}
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}
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static Sym*
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weaktypesym(Type *t)
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{
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char *p;
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Sym *s;
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static Pkg *weak;
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if(weak == nil) {
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weak = mkpkg(strlit("weak.type"));
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weak->name = "weak.type";
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weak->prefix = "weak.type"; // not weak%2etype
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}
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p = smprint("%#-T", t);
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s = pkglookup(p, weak);
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free(p);
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return s;
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}
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static Sym*
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static Sym*
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dtypesym(Type *t)
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dtypesym(Type *t)
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{
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{
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@ -680,8 +680,10 @@ doweak(void)
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if(t->type != 0 && t->reachable) {
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if(t->type != 0 && t->reachable) {
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s->value = t->value;
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s->value = t->value;
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s->type = t->type;
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s->type = t->type;
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} else
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} else {
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s->type = SCONST;
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s->value = 0;
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s->value = 0;
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}
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continue;
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continue;
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}
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}
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}
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}
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