static P1ND *
tlsnonpic(P1ND *p)
{
P1ND *q, *r;
struct symtab *sp, *sp2;
int ext = p->n_sp->sclass;
char *name;
name = getsoname(p->n_sp);
sp = picsymtab("", name,
ext == EXTERN ? "@INDNTPOFF" : "@NTPOFF");
q = xbcon(0, sp, INT);
if (ext == EXTERN)
q = block(UMUL, q, NIL, PTR|VOID, 0, 0);
sp2 = lookup("%gs:0", 0);
sp2->stype = EXTERN|INT;
r = nametree(sp2);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
}
static NODE *
picstatic(NODE *p)
{
NODE *q, *r;
struct symtab *sp;
q = tempnode(gotnr, PTR|VOID, 0, 0);
if (p->n_sp->slevel > 0) {
char buf[32];
if ((p->n_sp->sflags & SMASK) == SSTRING)
p->n_sp->sflags |= SASG;
snprintf(buf, 32, LABFMT, (int)p->n_sp->soffset);
sp = picsymtab("", buf, "@GOT");
} else {
sp = picsymtab("", getsoname(p->n_sp), "@GOT");
}
sp->sclass = STATIC;
sp->stype = p->n_sp->stype;
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, PTR|VOID, 0, 0);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
nfree(p);
return q;
}
/*
* Called when a identifier has been declared.
*/
void
fixdef(struct symtab *sp)
{
struct attr *ga;
#ifdef HAVE_WEAKREF
/* not many as'es have this directive */
if ((ga = attr_find(sp->sap, GCC_ATYP_WEAKREF)) != NULL) {
char *wr = ga->sarg(0);
char *sn = getsoname(sp);
if (wr == NULL) {
if ((ga = attr_find(sp->sap, GCC_ATYP_ALIAS))) {
wr = ga->sarg(0);
}
}
if (wr == NULL)
printf("\t.weak %s\n", sn);
else
printf("\t.weakref %s,%s\n", sn, wr);
} else
if ((ga = attr_find(sp->sap, GCC_ATYP_ALIAS)) != NULL) {
char *an = ga->sarg(0);
char *sn = getsoname(sp);
char *v;
v = attr_find(sp->sap, GCC_ATYP_WEAK) ? "weak" : "globl";
printf("\t.%s %s\n", v, sn);
printf("\t.set %s,%s\n", sn, an);
}
if (alias != NULL && (sp->sclass != PARAM)) {
char *name = getexname(sp);
printf("\t.globl %s\n", name);
printf("%s = ", name);
printf("%s\n", exname(alias));
alias = NULL;
}
if ((constructor || destructor) && (sp->sclass != PARAM)) {
NODE *p = p1alloc();
p->n_op = NAME;
p->n_sp =
(struct symtab *)(constructor ? "constructor" : "destructor");
sp->sap = attr_add(sp->sap, gcc_attr_parse(p));
constructor = destructor = 0;
}
#endif
}
/*
* Create a reference for a TLS variable.
*/
static P1ND *
tlspic(P1ND *p)
{
P1ND *q, *r;
struct symtab *sp, *sp2;
char *name;
/*
* creates:
* leal var@TLSGD(%ebx),%eax
* call ___tls_get_addr@PLT
*/
/* calc address of var@TLSGD */
q = tempnode(gotnr, PTR|VOID, 0, 0);
name = getsoname(p->n_sp);
sp = picsymtab("", name, "@TLSGD");
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
/* assign to %eax */
r = block(REG, NIL, NIL, PTR|VOID, 0, 0);
r->n_rval = EAX;
q = buildtree(ASSIGN, r, q);
/* call ___tls_get_addr */
sp2 = lookup("___tls_get_addr@PLT", 0);
sp2->stype = EXTERN|INT|FTN;
r = nametree(sp2);
r = buildtree(ADDROF, r, NIL);
r = block(UCALL, r, NIL, INT, 0, 0);
/* fusion both parts together */
q = buildtree(COMOP, q, r);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
}
/* clocal() is called to do local transformations on
* an expression tree preparitory to its being
* written out in intermediate code.
*
* the major essential job is rewriting the
* automatic variables and arguments in terms of
* REG and OREG nodes
* conversion ops which are not necessary are also clobbered here
* in addition, any special features (such as rewriting
* exclusive or) are easily handled here as well
*/
P1ND *
clocal(P1ND *p)
{
struct attr *ap;
register struct symtab *q;
register P1ND *r, *l, *n, *s;
register int o;
register int m;
#ifdef PCC_DEBUG
if (xdebug) {
printf("clocal: %p\n", p);
p1fwalk(p, eprint, 0);
}
#endif
switch( o = p->n_op ){
case NAME:
if ((q = p->n_sp) == NULL)
return p; /* Nothing to care about */
switch (q->sclass) {
case PARAM:
case AUTO:
/* fake up a structure reference */
r = block(REG, NIL, NIL, PTR+STRTY, 0, 0);
slval(r, 0);
r->n_rval = FPREG;
p = stref(block(STREF, r, p, 0, 0, 0));
break;
case USTATIC:
if (kflag == 0)
break;
/* FALLTHROUGH */
case STATIC:
#ifdef TLS
if (q->sflags & STLS) {
p = tlsref(p);
break;
}
#endif
if (kflag == 0) {
if (q->slevel == 0)
break;
} else if (kflag && !statinit && blevel > 0 &&
#ifdef GCC_COMPAT
attr_find(q->sap, GCC_ATYP_WEAKREF)) {
#else
0) {
#endif
/* extern call */
p = picext(p);
} else if (blevel > 0 && !statinit)
p = picstatic(p);
break;
case REGISTER:
p->n_op = REG;
slval(p, 0);
p->n_rval = q->soffset;
break;
case EXTERN:
case EXTDEF:
#ifdef TLS
if (q->sflags & STLS) {
p = tlsref(p);
break;
}
#endif
#ifdef PECOFFABI
if (q->sflags & SDLLINDIRECT)
p = import(p);
#endif
#ifdef GCC_COMPAT
if ((ap = attr_find(q->sap,
GCC_ATYP_VISIBILITY)) != NULL &&
strcmp(ap->sarg(0), "hidden") == 0)
printf(PRTPREF "\t.hidden %s\n", getsoname(q));
#endif
if (kflag == 0)
break;
if (blevel > 0 && !statinit)
p = picext(p);
break;
}
break;
case ADDROF:
if (kflag == 0 || blevel == 0 || statinit)
break;
/* char arrays may end up here */
l = p->n_left;
if (l->n_op != NAME ||
(l->n_type != ARY+CHAR && l->n_type != ARY+WCHAR_TYPE))
break;
l = p;
p = picstatic(p->n_left);
p1nfree(l);
if (p->n_op != UMUL)
cerror("ADDROF error");
l = p;
p = p->n_left;
p1nfree(l);
break;
case UCALL:
if (kflag == 0)
break;
l = block(REG, NIL, NIL, INT, 0, 0);
l->n_rval = EBX;
p->n_right = buildtree(ASSIGN, l, tempnode(gotnr, INT, 0, 0));
p->n_op -= (UCALL-CALL);
break;
case USTCALL:
#if defined(os_openbsd)
ap = strattr(p->n_left->n_ap);
if (ap->amsize == SZCHAR || ap->amsize == SZSHORT ||
ap->amsize == SZINT || ap->amsize == SZLONGLONG)
#else
if (attr_find(p->n_left->n_ap, ATTR_COMPLEX) &&
(ap = strattr(p->n_left->n_ap)) &&
ap->amsize == SZLONGLONG)
#endif
{
/* float complex */
/* fake one arg to make pass2 happy */
p->n_right = block(FUNARG, bcon(0), NIL, INT, 0, 0);
p->n_op -= (UCALL-CALL);
break;
}
/* Add hidden arg0 */
r = block(REG, NIL, NIL, INCREF(VOID), 0, 0);
regno(r) = EBP;
#ifdef GCC_COMPAT
if ((ap = attr_find(p->n_ap, GCC_ATYP_REGPARM)) != NULL &&
ap->iarg(0) > 0) {
l = block(REG, NIL, NIL, INCREF(VOID), 0, 0);
regno(l) = EAX;
p->n_right = buildtree(ASSIGN, l, r);
} else
#endif
p->n_right = block(FUNARG, r, NIL, INCREF(VOID), 0, 0);
p->n_op -= (UCALL-CALL);
if (kflag == 0)
break;
l = block(REG, NIL, NIL, INT, 0, 0);
regno(l) = EBX;
r = buildtree(ASSIGN, l, tempnode(gotnr, INT, 0, 0));
p->n_right = block(CM, r, p->n_right, INT, 0, 0);
break;
/* FALLTHROUGH */
#if defined(MACHOABI)
case CALL:
case STCALL:
if (p->n_type == VOID)
break;
r = tempnode(0, p->n_type, p->n_df, p->n_ap);
l = tcopy(r);
p = buildtree(COMOP, buildtree(ASSIGN, r, p), l);
#endif
break;
#ifdef notyet
/* XXX breaks sometimes */
case CBRANCH:
l = p->n_left;
/*
* Remove unnecessary conversion ops.
*/
if (!clogop(l->n_op) || l->n_left->n_op != SCONV)
break;
if (coptype(l->n_op) != BITYPE)
break;
if (l->n_right->n_op != ICON)
break;
r = l->n_left->n_left;
if (r->n_type >= FLOAT)
break;
if (toolarge(r->n_type, l->n_right->n_lval))
break;
l->n_right->n_type = r->n_type;
if (l->n_op >= ULE && l->n_op <= UGT)
l->n_op -= (UGT-ULE);
p->n_left = buildtree(l->n_op, r, l->n_right);
p1nfree(l->n_left);
p1nfree(l);
break;
#endif
case PCONV:
l = p->n_left;
/* Make int type before pointer */
if (l->n_type < INT || l->n_type == LONGLONG ||
l->n_type == ULONGLONG || l->n_type == BOOL) {
/* float etc? */
p->n_left = block(SCONV, l, NIL, UNSIGNED, 0, 0);
}
break;
case SCONV:
if (p->n_left->n_op == COMOP)
break; /* may propagate wrong type later */
l = p->n_left;
if (p->n_type == l->n_type) {
p1nfree(p);
return l;
}
if ((p->n_type & TMASK) == 0 && (l->n_type & TMASK) == 0 &&
tsize(p->n_type, p->n_df, p->n_ap) ==
tsize(l->n_type, l->n_df, l->n_ap)) {
if (p->n_type != FLOAT && p->n_type != DOUBLE &&
l->n_type != FLOAT && l->n_type != DOUBLE &&
l->n_type != LDOUBLE && p->n_type != LDOUBLE) {
if (l->n_op == NAME || l->n_op == UMUL ||
l->n_op == TEMP) {
l->n_type = p->n_type;
p1nfree(p);
return l;
}
}
}
if (DEUNSIGN(p->n_type) == INT && DEUNSIGN(l->n_type) == INT &&
coptype(l->n_op) == BITYPE && l->n_op != COMOP &&
l->n_op != QUEST && l->n_op != ASSIGN) {
l->n_type = p->n_type;
p1nfree(p);
return l;
}
o = l->n_op;
m = p->n_type;
if (o == ICON) {
/*
* Can only end up here if o is an address,
* and in that case the only compile-time conversion
* possible is to int.
*/
if ((TMASK & l->n_type) == 0 && l->n_sp == NULL)
cerror("SCONV ICON");
if (l->n_sp == 0) {
p->n_type = UNSIGNED;
concast(l, m);
} else if (m != INT && m != UNSIGNED)
break;
l->n_type = m;
l->n_ap = 0;
p1nfree(p);
return l;
} else if (l->n_op == FCON)
cerror("SCONV FCON");
if ((p->n_type == CHAR || p->n_type == UCHAR ||
p->n_type == SHORT || p->n_type == USHORT) &&
(l->n_type == FLOAT || l->n_type == DOUBLE ||
l->n_type == LDOUBLE)) {
p = block(SCONV, p, NIL, p->n_type, p->n_df, p->n_ap);
p->n_left->n_type = INT;
return p;
}
break;
case MOD:
case DIV:
if (o == DIV && p->n_type != CHAR && p->n_type != SHORT)
break;
if (o == MOD && p->n_type != CHAR && p->n_type != SHORT)
break;
/* make it an int division by inserting conversions */
p->n_left = makety(p->n_left, INT, 0, 0, 0);
p->n_right = makety(p->n_right, INT, 0, 0, 0);
o = p->n_type;
p->n_type = INT;
p = makety(p, o, 0, 0, 0);
break;
case FORCE:
/* put return value in return reg */
p->n_op = ASSIGN;
p->n_right = p->n_left;
p->n_left = block(REG, NIL, NIL, p->n_type, 0, 0);
p->n_left->n_rval = p->n_left->n_type == BOOL ?
RETREG(CHAR) : RETREG(p->n_type);
break;
case LS:
case RS:
/* shift count must be in a char */
if (p->n_right->n_type == CHAR || p->n_right->n_type == UCHAR)
break;
p->n_right = block(SCONV, p->n_right, NIL, CHAR, 0, 0);
break;
/* If not using pcc struct return */
case STASG:
r = p->n_right;
if (r->n_op != STCALL && r->n_op != USTCALL)
break;
m = tsize(BTYPE(r->n_type), r->n_df, r->n_ap);
if (m == SZCHAR)
m = CHAR;
else if (m == SZSHORT)
m = SHORT;
else if (m == SZINT)
m = INT;
else if (m == SZLONGLONG)
m = LONGLONG;
else
break;
#if !defined(os_openbsd)
if (attr_find(r->n_ap, ATTR_COMPLEX) == 0)
break; /* float _Complex always in regs */
#endif
l = buildtree(ADDROF, p->n_left, NIL);
p1nfree(p);
r->n_op -= (STCALL-CALL);
r->n_type = m;
/* r = long, l = &struct */
n = tempnode(0, m, r->n_df, r->n_ap);
r = buildtree(ASSIGN, p1tcopy(n), r);
s = tempnode(0, l->n_type, l->n_df, l->n_ap);
l = buildtree(ASSIGN, p1tcopy(s), l);
p = buildtree(COMOP, r, l);
l = buildtree(CAST,
block(NAME, NIL, NIL, m|PTR, 0, 0), p1tcopy(s));
r = l->n_right;
p1nfree(l->n_left);
p1nfree(l);
r = buildtree(ASSIGN, buildtree(UMUL, r, NIL), n);
p = buildtree(COMOP, p, r);
p = buildtree(COMOP, p, s);
break;
}
/*
* Create a reference for a static variable.
*/
static P1ND *
picstatic(P1ND *p)
{
#if defined(ELFABI)
P1ND *q, *r;
struct symtab *sp;
q = tempnode(gotnr, PTR|VOID, 0, 0);
if (p->n_sp->slevel > 0) {
char buf[32];
if ((p->n_sp->sflags & SMASK) == SSTRING)
p->n_sp->sflags |= SASG;
snprintf(buf, 32, LABFMT, (int)p->n_sp->soffset);
sp = picsymtab("", buf, "@GOTOFF");
} else
sp = picsymtab("", getsoname(p->n_sp), "@GOTOFF");
sp->sclass = STATIC;
sp->stype = p->n_sp->stype;
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
#elif defined(MACHOABI)
P1ND *q, *r;
struct symtab *sp;
char buf2[256];
snprintf(buf2, 256, "-L%s$pb",
cftnsp->soname ? cftnsp->soname : cftnsp->sname);
if (p->n_sp->slevel > 0) {
char buf1[32];
snprintf(buf1, 32, LABFMT, (int)p->n_sp->soffset);
sp = picsymtab("", buf1, buf2);
} else {
char *name = getexname(p->n_sp);
sp = picsymtab("", name, buf2);
}
sp->sclass = STATIC;
sp->stype = p->n_sp->stype;
q = tempnode(gotnr, PTR+VOID, 0, 0);
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp;
p1nfree(p);
return q;
#else /* defined(PECOFFABI) || defined(AOUTABI) */
return p;
#endif
}
/*
* Create a reference for an extern variable.
*/
static P1ND *
picext(P1ND *p)
{
struct attr *ap;
#if defined(ELFABI)
P1ND *q, *r;
struct symtab *sp;
char *name;
q = tempnode(gotnr, PTR|VOID, 0, 0);
name = getexname(p->n_sp);
#ifdef GCC_COMPAT
if ((ap = attr_find(p->n_sp->sap, GCC_ATYP_VISIBILITY)) &&
strcmp(ap->sarg(0), "hidden") == 0) {
/* For hidden vars use GOTOFF */
sp = picsymtab("", name, "@GOTOFF");
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
}
#endif
sp = picsymtab("", name, "@GOT");
#ifdef GCC_COMPAT
if (attr_find(p->n_sp->sap, GCC_ATYP_STDCALL) != NULL)
p->n_sp->sflags |= SSTDCALL;
#endif
sp->sflags = p->n_sp->sflags & SSTDCALL;
sp->sap = attr_add(p->n_sp->sap, sp->sap);
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
q = block(UMUL, q, 0, PTR|VOID, 0, 0);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
#elif defined(MACHOABI)
P1ND *q, *r;
struct symtab *sp;
char buf2[256], *name, *pspn;
name = getsoname(cftnsp);
pspn = getexname(p->n_sp);
if (p->n_sp->sclass == EXTDEF) {
snprintf(buf2, 256, "-L%s$pb", name);
sp = picsymtab("", pspn, buf2);
} else {
snprintf(buf2, 256, "$non_lazy_ptr-L%s$pb", name);
sp = picsymtab("L", pspn, buf2);
addstub(&nlplist, pspn);
}
sp->stype = p->n_sp->stype;
q = tempnode(gotnr, PTR+VOID, 0, 0);
r = xbcon(0, sp, INT);
q = buildtree(PLUS, q, r);
if (p->n_sp->sclass != EXTDEF)
q = block(UMUL, q, 0, PTR+VOID, 0, 0);
q = block(UMUL, q, 0, p->n_type, p->n_df, p->n_ap);
q->n_sp = p->n_sp; /* for init */
p1nfree(p);
return q;
#else /* defined(PECOFFABI) || defined(AOUTABI) */
return p;
#endif
}