diff --git a/src/cmd/6g/obj.c b/src/cmd/6g/obj.c index bdbf5c7671..1970d1fabc 100644 --- a/src/cmd/6g/obj.c +++ b/src/cmd/6g/obj.c @@ -272,7 +272,7 @@ data(void) { gflag = debug['g']; debug['g'] = 0; - + if(estrdat == nil) { strdat = mal(sizeof(*pc)); clearp(strdat); @@ -324,7 +324,7 @@ datastring(char *s, int len, Addr *a) Strlit lit; char buf[100]; } tmp; - + // string memset(&ao, 0, sizeof(ao)); ao.type = D_STATIC; @@ -421,7 +421,7 @@ datagostring(Strlit *sval, Addr *a) wi = types[TUINT32]->width; wp = types[tptr]->width; - + if(ap.index == D_STATIC) { // huge strings are made static to avoid long names snprint(namebuf, sizeof(namebuf), ".gostring.%d", ++gen); @@ -457,7 +457,7 @@ datagostring(Strlit *sval, Addr *a) p->from.scale = wi; p->to = ac; p->to.offset = sval->len; - + p = pc; ggloblsym(ao.sym, types[TSTRING]->width, ao.type == D_EXTERN); if(ao.type == D_STATIC) @@ -553,7 +553,7 @@ void genembedtramp(Type *t, Sig *b) { Sym *e; - int c, d, o; + int c, d, o, loaded; Prog *p; Type *f; @@ -566,9 +566,6 @@ genembedtramp(Type *t, Sig *b) fatal("genembedtramp %T.%s", t, b->name); out: - if(d == 0) - return; - // print("genembedtramp %d\n", d); // print(" t = %lT\n", t); // print(" name = %s\n", b->name); @@ -587,20 +584,24 @@ out: p->from.scale = 7; //print("1. %P\n", p); - //MOVQ 8(SP), AX - p = pc; - gins(AMOVQ, N, N); - p->from.type = D_INDIR+D_SP; - p->from.offset = 8; - p->to.type = D_AX; -//print("2. %P\n", p); - + loaded = 0; o = 0; for(c=d-1; c>=0; c--) { f = dotlist[c].field; o += f->width; if(!isptr[f->type->etype]) continue; + if(!loaded) { + loaded = 1; + //MOVQ 8(SP), AX + p = pc; + gins(AMOVQ, N, N); + p->from.type = D_INDIR+D_SP; + p->from.offset = 8; + p->to.type = D_AX; +//print("2. %P\n", p); + } + //MOVQ o(AX), AX p = pc; gins(AMOVQ, N, N); @@ -616,17 +617,31 @@ out: gins(AADDQ, N, N); p->from.type = D_CONST; p->from.offset = o; - p->to.type = D_AX; + if(loaded) + p->to.type = D_AX; + else { + p->to.type = D_INDIR+D_SP; + p->to.offset = 8; + } //print("4. %P\n", p); } //MOVQ AX, 8(SP) - p = pc; - gins(AMOVQ, N, N); - p->from.type = D_AX; - p->to.type = D_INDIR+D_SP; - p->to.offset = 8; + if(loaded) { + p = pc; + gins(AMOVQ, N, N); + p->from.type = D_AX; + p->to.type = D_INDIR+D_SP; + p->to.offset = 8; //print("5. %P\n", p); + } else { + // TODO(rsc): obviously this is unnecessary, + // but 6l has a bug, and it can't handle + // JMP instructions too close to the top of + // a new function. + p = pc; + gins(ANOP, N, N); + } f = dotlist[0].field; //JMP mainĀ·*Sub_test2(SB)