symbol *callFuncsAndGates(Module *m, symbols *sctors, StaticDtorDeclarations *ectorgates,
const char *id)
{
symbol *sctor = NULL;
if ((sctors && sctors->dim) ||
(ectorgates && ectorgates->dim))
{
static type *t;
if (!t)
{
/* t will be the type of the functions generated:
* extern (C) void func();
*/
t = type_alloc(TYnfunc);
t->Tflags |= TFprototype | TFfixed;
t->Tmangle = mTYman_c;
t->Tnext = tsvoid;
tsvoid->Tcount++;
}
localgot = NULL;
sctor = m->toSymbolX(id, SCglobal, t, "FZv");
cstate.CSpsymtab = &sctor->Sfunc->Flocsym;
elem *ector = NULL;
if (ectorgates)
{
for (size_t i = 0; i < ectorgates->dim; i++)
{ StaticDtorDeclaration *f = (*ectorgates)[i];
Symbol *s = f->vgate->toSymbol();
elem *e = el_var(s);
e = el_bin(OPaddass, TYint, e, el_long(TYint, 1));
ector = el_combine(ector, e);
}
}
if (sctors)
{
for (size_t i = 0; i < sctors->dim; i++)
{ symbol *s = (*sctors)[i];
elem *e = el_una(OPucall, TYvoid, el_var(s));
ector = el_combine(ector, e);
}
}
block *b = block_calloc();
b->BC = BCret;
b->Belem = ector;
sctor->Sfunc->Fstartline.Sfilename = m->arg;
sctor->Sfunc->Fstartblock = b;
writefunc(sctor);
}
return sctor;
}
elem *type_vla_fix(type **pt)
{
type *t;
elem *e = NULL;
for (t = *pt; t; t = t->Tnext)
{
type_debug(t);
if (tybasic(t->Tty) == TYarray && t->Tflags & TFvla && t->Tel)
{ symbol *s;
elem *ec;
s = symbol_genauto(tsuns);
ec = el_var(s);
ec = el_bint(OPeq, tsuns, ec, t->Tel);
e = el_combine(e, ec);
t->Tel = el_var(s);
}
}
return e;
}
void FuncDeclaration::toObjFile(int multiobj)
{
Symbol *s;
func_t *f;
Symbol *senter;
Symbol *sexit;
FuncDeclaration *func = this;
ClassDeclaration *cd = func->parent->isClassDeclaration();
int reverse;
int i;
int has_arguments;
//printf("FuncDeclaration::toObjFile(%p, %s.%s)\n", func, parent->toChars(), func->toChars());
#if 0
//printf("line = %d\n",func->getWhere() / LINEINC);
EEcontext *ee = env->getEEcontext();
if (ee->EEcompile == 2)
{
if (ee->EElinnum < (func->getWhere() / LINEINC) ||
ee->EElinnum > (func->endwhere / LINEINC)
)
return; // don't compile this function
ee->EEfunc = func->toSymbol();
}
#endif
if (multiobj && !isStaticDtorDeclaration() && !isStaticCtorDeclaration())
{ obj_append(this);
return;
}
if (semanticRun >= 5) // if toObjFile() already run
return;
semanticRun = 5;
if (!func->fbody)
{
return;
}
if (func->isUnitTestDeclaration() && !global.params.useUnitTests)
return;
if (global.params.verbose)
printf("function %s\n",func->toChars());
s = func->toSymbol();
f = s->Sfunc;
#if TARGET_WINDOS
/* This is done so that the 'this' pointer on the stack is the same
* distance away from the function parameters, so that an overriding
* function can call the nested fdensure or fdrequire of its overridden function
* and the stack offsets are the same.
*/
if (isVirtual() && (fensure || frequire))
f->Fflags3 |= Ffakeeh;
#endif
#if TARGET_OSX
s->Sclass = SCcomdat;
#else
s->Sclass = SCglobal;
#endif
for (Dsymbol *p = parent; p; p = p->parent)
{
if (p->isTemplateInstance())
{
s->Sclass = SCcomdat;
break;
}
}
if (isNested())
{
// if (!(config.flags3 & CFG3pic))
// s->Sclass = SCstatic;
f->Fflags3 |= Fnested;
}
else
{
const char *libname = (global.params.symdebug)
? global.params.debuglibname
: global.params.defaultlibname;
// Pull in RTL startup code
if (func->isMain())
{ objextdef("_main");
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS
obj_ehsections(); // initialize exception handling sections
#else
objextdef("__acrtused_con");
#endif
obj_includelib(libname);
s->Sclass = SCglobal;
}
else if (strcmp(s->Sident, "main") == 0 && linkage == LINKc)
s->Sclass = SCglobal;
else if (func->isWinMain())
{
objextdef("__acrtused");
obj_includelib(libname);
s->Sclass = SCglobal;
}
// Pull in RTL startup code
else if (func->isDllMain())
{
objextdef("__acrtused_dll");
obj_includelib(libname);
s->Sclass = SCglobal;
}
}
cstate.CSpsymtab = &f->Flocsym;
// Find module m for this function
Module *m = NULL;
for (Dsymbol *p = parent; p; p = p->parent)
{
m = p->isModule();
if (m)
break;
}
IRState irs(m, func);
Array deferToObj; // write these to OBJ file later
irs.deferToObj = &deferToObj;
TypeFunction *tf;
enum RET retmethod;
symbol *shidden = NULL;
Symbol *sthis = NULL;
tym_t tyf;
tyf = tybasic(s->Stype->Tty);
//printf("linkage = %d, tyf = x%x\n", linkage, tyf);
reverse = tyrevfunc(s->Stype->Tty);
assert(func->type->ty == Tfunction);
tf = (TypeFunction *)(func->type);
has_arguments = (tf->linkage == LINKd) && (tf->varargs == 1);
retmethod = tf->retStyle();
if (retmethod == RETstack)
{
// If function returns a struct, put a pointer to that
// as the first argument
::type *thidden = tf->next->pointerTo()->toCtype();
char hiddenparam[5+4+1];
static int hiddenparami; // how many we've generated so far
sprintf(hiddenparam,"__HID%d",++hiddenparami);
shidden = symbol_name(hiddenparam,SCparameter,thidden);
shidden->Sflags |= SFLtrue | SFLfree;
#if DMDV1
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedref)
#else
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedrefs.dim)
#endif
type_setcv(&shidden->Stype, shidden->Stype->Tty | mTYvolatile);
irs.shidden = shidden;
this->shidden = shidden;
}
if (vthis)
{
assert(!vthis->csym);
sthis = vthis->toSymbol();
irs.sthis = sthis;
if (!(f->Fflags3 & Fnested))
f->Fflags3 |= Fmember;
}
Symbol **params;
unsigned pi;
// Estimate number of parameters, pi
pi = (v_arguments != NULL);
if (parameters)
pi += parameters->dim;
// Allow extra 2 for sthis and shidden
params = (Symbol **)alloca((pi + 2) * sizeof(Symbol *));
// Get the actual number of parameters, pi, and fill in the params[]
pi = 0;
if (v_arguments)
{
params[pi] = v_arguments->toSymbol();
pi += 1;
}
if (parameters)
{
for (i = 0; i < parameters->dim; i++)
{ VarDeclaration *v = (VarDeclaration *)parameters->data[i];
if (v->csym)
{
error("compiler error, parameter '%s', bugzilla 2962?", v->toChars());
assert(0);
}
params[pi + i] = v->toSymbol();
}
pi += i;
}
if (reverse)
{ // Reverse params[] entries
for (i = 0; i < pi/2; i++)
{ Symbol *sptmp;
sptmp = params[i];
params[i] = params[pi - 1 - i];
params[pi - 1 - i] = sptmp;
}
}
if (shidden)
{
#if 0
// shidden becomes last parameter
params[pi] = shidden;
#else
// shidden becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = shidden;
#endif
pi++;
}
if (sthis)
{
#if 0
// sthis becomes last parameter
params[pi] = sthis;
#else
// sthis becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = sthis;
#endif
pi++;
}
if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) &&
linkage != LINKd && shidden && sthis)
{
/* swap shidden and sthis
*/
Symbol *sp = params[0];
params[0] = params[1];
params[1] = sp;
}
for (i = 0; i < pi; i++)
{ Symbol *sp = params[i];
sp->Sclass = SCparameter;
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara;
symbol_add(sp);
}
// First parameter goes in register
if (pi)
{
Symbol *sp = params[0];
if ((tyf == TYjfunc || tyf == TYmfunc) &&
type_jparam(sp->Stype))
{ sp->Sclass = SCfastpar;
sp->Spreg = (tyf == TYjfunc) ? AX : CX;
sp->Sfl = FLauto;
//printf("'%s' is SCfastpar\n",sp->Sident);
}
}
if (func->fbody)
{ block *b;
Blockx bx;
Statement *sbody;
localgot = NULL;
sbody = func->fbody;
memset(&bx,0,sizeof(bx));
bx.startblock = block_calloc();
bx.curblock = bx.startblock;
bx.funcsym = s;
bx.scope_index = -1;
bx.classdec = cd;
bx.member = func;
bx.module = getModule();
irs.blx = &bx;
buildClosure(&irs);
#if 0
if (func->isSynchronized())
{
if (cd)
{ elem *esync;
if (func->isStatic())
{ // monitor is in ClassInfo
esync = el_ptr(cd->toSymbol());
}
else
{ // 'this' is the monitor
esync = el_var(sthis);
}
if (func->isStatic() || sbody->usesEH() ||
!(config.flags2 & CFG2seh))
{ // BUG: what if frequire or fensure uses EH?
sbody = new SynchronizedStatement(func->loc, esync, sbody);
}
else
{
#if TARGET_WINDOS
if (config.flags2 & CFG2seh)
{
/* The "jmonitor" uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
* It isn't strictly necessary.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
el_free(esync);
}
}
else
{
error("synchronized function %s must be a member of a class", func->toChars());
}
}
#elif TARGET_WINDOS
if (func->isSynchronized() && cd && config.flags2 & CFG2seh &&
!func->isStatic() && !sbody->usesEH())
{
/* The "jmonitor" hack uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
sbody->toIR(&irs);
bx.curblock->BC = BCret;
f->Fstartblock = bx.startblock;
// einit = el_combine(einit,bx.init);
if (isCtorDeclaration())
{
assert(sthis);
for (b = f->Fstartblock; b; b = b->Bnext)
{
if (b->BC == BCret)
{
b->BC = BCretexp;
b->Belem = el_combine(b->Belem, el_var(sthis));
}
}
}
}
// If static constructor
if (isStaticConstructor())
{
elem *e = el_una(OPucall, TYvoid, el_var(s));
ector = el_combine(ector, e);
}
// If static destructor
if (isStaticDestructor())
{
elem *e;
#if STATICCTOR
e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_FATEXIT]), el_ptr(s));
ector = el_combine(ector, e);
dtorcount++;
#else
StaticDtorDeclaration *f = isStaticDtorDeclaration();
assert(f);
if (f->vgate)
{ /* Increment destructor's vgate at construction time
*/
ectorgates.push(f);
}
e = el_una(OPucall, TYvoid, el_var(s));
edtor = el_combine(e, edtor);
#endif
}
// If unit test
if (isUnitTestDeclaration())
{
elem *e = el_una(OPucall, TYvoid, el_var(s));
etest = el_combine(etest, e);
}
if (global.errors)
return;
writefunc(s);
if (isExport())
obj_export(s, Poffset);
for (i = 0; i < irs.deferToObj->dim; i++)
{
Dsymbol *s = (Dsymbol *)irs.deferToObj->data[i];
s->toObjFile(0);
}
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS
// A hack to get a pointer to this function put in the .dtors segment
if (ident && memcmp(ident->toChars(), "_STD", 4) == 0)
obj_staticdtor(s);
#endif
#if DMDV2
if (irs.startaddress)
{
printf("Setting start address\n");
obj_startaddress(irs.startaddress);
}
#endif
}
void Module::genobjfile(int multiobj)
{
//EEcontext *ee = env->getEEcontext();
//printf("Module::genobjfile(multiobj = %d) %s\n", multiobj, toChars());
lastmname = srcfile->toChars();
obj_initfile(lastmname, NULL, toPrettyChars());
eictor = NULL;
ictorlocalgot = NULL;
ector = NULL;
ectorgates.setDim(0);
edtor = NULL;
etest = NULL;
dtorcount = 0;
if (doppelganger)
{
/* Generate a reference to the moduleinfo, so the module constructors
* and destructors get linked in.
*/
Module *m = (Module *)aimports.data[0];
assert(m);
if (m->sictor || m->sctor || m->sdtor)
{
Symbol *s = m->toSymbol();
//objextern(s);
//if (!s->Sxtrnnum) objextdef(s->Sident);
if (!s->Sxtrnnum)
{
//printf("%s\n", s->Sident);
#if 0 /* This should work, but causes optlink to fail in common/newlib.asm */
objextdef(s->Sident);
#else
#if ELFOBJ || MACHOBJ
int nbytes = reftoident(DATA, Offset(DATA), s, 0, CFoff);
Offset(DATA) += nbytes;
#else
int nbytes = reftoident(DATA, Doffset, s, 0, CFoff);
Doffset += nbytes;
#endif
#endif
}
}
}
if (global.params.cov)
{
/* Create coverage identifier:
* private uint[numlines] __coverage;
*/
cov = symbol_calloc("__coverage");
cov->Stype = type_fake(TYint);
cov->Stype->Tmangle = mTYman_c;
cov->Stype->Tcount++;
cov->Sclass = SCstatic;
cov->Sfl = FLdata;
#if ELFOBJ || MACHOBJ
cov->Sseg = UDATA;
#endif
dtnzeros(&cov->Sdt, 4 * numlines);
outdata(cov);
slist_add(cov);
covb = (unsigned *)calloc((numlines + 32) / 32, sizeof(*covb));
}
for (int i = 0; i < members->dim; i++)
{
Dsymbol *member = (Dsymbol *)members->data[i];
member->toObjFile(multiobj);
}
if (global.params.cov)
{
/* Generate
* bit[numlines] __bcoverage;
*/
Symbol *bcov = symbol_calloc("__bcoverage");
bcov->Stype = type_fake(TYuint);
bcov->Stype->Tcount++;
bcov->Sclass = SCstatic;
bcov->Sfl = FLdata;
#if ELFOBJ || MACHOBJ
bcov->Sseg = DATA;
#endif
dtnbytes(&bcov->Sdt, (numlines + 32) / 32 * sizeof(*covb), (char *)covb);
outdata(bcov);
free(covb);
covb = NULL;
/* Generate:
* _d_cover_register(uint[] __coverage, BitArray __bcoverage, string filename);
* and prepend it to the static constructor.
*/
/* t will be the type of the functions generated:
* extern (C) void func();
*/
type *t = type_alloc(TYnfunc);
t->Tflags |= TFprototype | TFfixed;
t->Tmangle = mTYman_c;
t->Tnext = tsvoid;
tsvoid->Tcount++;
sictor = toSymbolX("__modictor", SCglobal, t, "FZv");
cstate.CSpsymtab = &sictor->Sfunc->Flocsym;
localgot = ictorlocalgot;
elem *e;
e = el_params(el_ptr(cov), el_long(TYuint, numlines),
el_ptr(bcov), el_long(TYuint, numlines),
toEfilename(),
NULL);
e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_DCOVER]), e);
eictor = el_combine(e, eictor);
ictorlocalgot = localgot;
}
// If coverage / static constructor / destructor / unittest calls
if (eictor || ector || ectorgates.dim || edtor || etest)
{
/* t will be the type of the functions generated:
* extern (C) void func();
*/
type *t = type_alloc(TYnfunc);
t->Tflags |= TFprototype | TFfixed;
t->Tmangle = mTYman_c;
t->Tnext = tsvoid;
tsvoid->Tcount++;
static char moddeco[] = "FZv";
if (eictor)
{
localgot = ictorlocalgot;
block *b = block_calloc();
b->BC = BCret;
b->Belem = eictor;
sictor->Sfunc->Fstartblock = b;
writefunc(sictor);
}
if (ector || ectorgates.dim)
{
localgot = NULL;
sctor = toSymbolX("__modctor", SCglobal, t, moddeco);
cstate.CSpsymtab = &sctor->Sfunc->Flocsym;
for (int i = 0; i < ectorgates.dim; i++)
{ StaticDtorDeclaration *f = (StaticDtorDeclaration *)ectorgates.data[i];
Symbol *s = f->vgate->toSymbol();
elem *e = el_var(s);
e = el_bin(OPaddass, TYint, e, el_long(TYint, 1));
ector = el_combine(ector, e);
}
block *b = block_calloc();
b->BC = BCret;
b->Belem = ector;
sctor->Sfunc->Fstartblock = b;
writefunc(sctor);
#if STATICCTOR
obj_staticctor(sctor, dtorcount, 1);
#endif
}
if (edtor)
{
localgot = NULL;
sdtor = toSymbolX("__moddtor", SCglobal, t, moddeco);
block *b = block_calloc();
b->BC = BCret;
b->Belem = edtor;
sdtor->Sfunc->Fstartblock = b;
writefunc(sdtor);
}
if (etest)
{
localgot = NULL;
stest = toSymbolX("__modtest", SCglobal, t, moddeco);
block *b = block_calloc();
b->BC = BCret;
b->Belem = etest;
stest->Sfunc->Fstartblock = b;
writefunc(stest);
}
if (doppelganger)
genmoduleinfo();
}
if (doppelganger)
{
obj_termfile();
return;
}
if (global.params.multiobj)
{ /* This is necessary because the main .obj for this module is written
* first, but determining whether marray or massert are needed is done
* possibly later in the doppelganger modules.
* Another way to fix it is do the main one last.
*/
toModuleAssert();
toModuleArray();
}
// If module assert
for (int i = 0; i < 2; i++)
{
Symbol *ma = i ? marray : massert;
if (ma)
{
elem *elinnum;
elem *efilename;
localgot = NULL;
// Call dassert(filename, line)
// Get sole parameter, linnum
{
Symbol *sp;
sp = symbol_calloc("linnum");
sp->Stype = type_fake(TYint);
sp->Stype->Tcount++;
sp->Sclass = SCfastpar;
sp->Spreg = AX;
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara; // FLauto?
cstate.CSpsymtab = &ma->Sfunc->Flocsym;
symbol_add(sp);
elinnum = el_var(sp);
}
efilename = toEmodulename();
elem *e = el_var(rtlsym[i ? RTLSYM_DARRAY : RTLSYM_DASSERT]);
e = el_bin(OPcall, TYvoid, e, el_param(elinnum, efilename));
block *b = block_calloc();
b->BC = BCret;
b->Belem = e;
ma->Sfunc->Fstartblock = b;
ma->Sclass = SCglobal;
ma->Sfl = 0;
writefunc(ma);
}
}
#if 1
// Always generate module info, because of templates and -cov
if (1 || needModuleInfo())
genmoduleinfo();
#endif
obj_termfile();
}
void FuncDeclaration_toObjFile(FuncDeclaration *fd, bool multiobj)
{
ClassDeclaration *cd = fd->parent->isClassDeclaration();
//printf("FuncDeclaration::toObjFile(%p, %s.%s)\n", fd, fd->parent->toChars(), fd->toChars());
//if (type) printf("type = %s\n", type->toChars());
#if 0
//printf("line = %d\n", getWhere() / LINEINC);
EEcontext *ee = env->getEEcontext();
if (ee->EEcompile == 2)
{
if (ee->EElinnum < (getWhere() / LINEINC) ||
ee->EElinnum > (endwhere / LINEINC)
)
return; // don't compile this function
ee->EEfunc = toSymbol(this);
}
#endif
if (fd->semanticRun >= PASSobj) // if toObjFile() already run
return;
if (fd->type && fd->type->ty == Tfunction && ((TypeFunction *)fd->type)->next == NULL)
return;
// If errors occurred compiling it, such as bugzilla 6118
if (fd->type && fd->type->ty == Tfunction && ((TypeFunction *)fd->type)->next->ty == Terror)
return;
if (global.errors)
return;
if (!fd->fbody)
return;
UnitTestDeclaration *ud = fd->isUnitTestDeclaration();
if (ud && !global.params.useUnitTests)
return;
if (multiobj && !fd->isStaticDtorDeclaration() && !fd->isStaticCtorDeclaration())
{
obj_append(fd);
return;
}
if (fd->semanticRun == PASSsemanticdone)
{
/* What happened is this function failed semantic3() with errors,
* but the errors were gagged.
* Try to reproduce those errors, and then fail.
*/
fd->error("errors compiling the function");
return;
}
assert(fd->semanticRun == PASSsemantic3done);
assert(fd->ident != Id::empty);
for (FuncDeclaration *fd2 = fd; fd2; )
{
if (fd2->inNonRoot())
return;
if (fd2->isNested())
fd2 = fd2->toParent2()->isFuncDeclaration();
else
break;
}
FuncDeclaration *fdp = fd->toParent2()->isFuncDeclaration();
if (fd->isNested())
{
if (fdp && fdp->semanticRun < PASSobj)
{
if (fdp->semantic3Errors)
return;
/* Can't do unittest's out of order, they are order dependent in that their
* execution is done in lexical order.
*/
if (UnitTestDeclaration *udp = fdp->isUnitTestDeclaration())
{
udp->deferredNested.push(fd);
return;
}
}
}
if (fd->isArrayOp && isDruntimeArrayOp(fd->ident))
{
// Implementation is in druntime
return;
}
// start code generation
fd->semanticRun = PASSobj;
if (global.params.verbose)
fprintf(global.stdmsg, "function %s\n", fd->toPrettyChars());
Symbol *s = toSymbol(fd);
func_t *f = s->Sfunc;
// tunnel type of "this" to debug info generation
if (AggregateDeclaration* ad = fd->parent->isAggregateDeclaration())
{
::type* t = Type_toCtype(ad->getType());
if (cd)
t = t->Tnext; // skip reference
f->Fclass = (Classsym *)t;
}
#if TARGET_WINDOS
/* This is done so that the 'this' pointer on the stack is the same
* distance away from the function parameters, so that an overriding
* function can call the nested fdensure or fdrequire of its overridden function
* and the stack offsets are the same.
*/
if (fd->isVirtual() && (fd->fensure || fd->frequire))
f->Fflags3 |= Ffakeeh;
#endif
#if TARGET_OSX
s->Sclass = SCcomdat;
#else
s->Sclass = SCglobal;
#endif
for (Dsymbol *p = fd->parent; p; p = p->parent)
{
if (p->isTemplateInstance())
{
s->Sclass = SCcomdat;
break;
}
}
/* Vector operations should be comdat's
*/
if (fd->isArrayOp)
s->Sclass = SCcomdat;
if (fd->isNested())
{
//if (!(config.flags3 & CFG3pic))
// s->Sclass = SCstatic;
f->Fflags3 |= Fnested;
/* The enclosing function must have its code generated first,
* in order to calculate correct frame pointer offset.
*/
if (fdp && fdp->semanticRun < PASSobj)
{
toObjFile(fdp, multiobj);
}
}
else
{
const char *libname = (global.params.symdebug)
? global.params.debuglibname
: global.params.defaultlibname;
// Pull in RTL startup code (but only once)
if (fd->isMain() && onlyOneMain(fd->loc))
{
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
objmod->external_def("_main");
objmod->ehsections(); // initialize exception handling sections
#endif
#if TARGET_WINDOS
if (global.params.mscoff)
{
objmod->external_def("main");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("_main");
objmod->external_def("__acrtused_con");
}
#endif
objmod->includelib(libname);
s->Sclass = SCglobal;
}
else if (strcmp(s->Sident, "main") == 0 && fd->linkage == LINKc)
{
#if TARGET_WINDOS
if (global.params.mscoff)
{
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
}
else
{
objmod->external_def("__acrtused_con"); // bring in C startup code
objmod->includelib("snn.lib"); // bring in C runtime library
}
#endif
s->Sclass = SCglobal;
}
#if TARGET_WINDOS
else if (fd->isWinMain() && onlyOneMain(fd->loc))
{
if (global.params.mscoff)
{
objmod->includelib("uuid");
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("__acrtused");
}
objmod->includelib(libname);
s->Sclass = SCglobal;
}
// Pull in RTL startup code
else if (fd->isDllMain() && onlyOneMain(fd->loc))
{
if (global.params.mscoff)
{
objmod->includelib("uuid");
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("__acrtused_dll");
}
objmod->includelib(libname);
s->Sclass = SCglobal;
}
#endif
}
symtab_t *symtabsave = cstate.CSpsymtab;
cstate.CSpsymtab = &f->Flocsym;
// Find module m for this function
Module *m = NULL;
for (Dsymbol *p = fd->parent; p; p = p->parent)
{
m = p->isModule();
if (m)
break;
}
IRState irs(m, fd);
Dsymbols deferToObj; // write these to OBJ file later
irs.deferToObj = &deferToObj;
symbol *shidden = NULL;
Symbol *sthis = NULL;
tym_t tyf = tybasic(s->Stype->Tty);
//printf("linkage = %d, tyf = x%x\n", linkage, tyf);
int reverse = tyrevfunc(s->Stype->Tty);
assert(fd->type->ty == Tfunction);
TypeFunction *tf = (TypeFunction *)fd->type;
RET retmethod = retStyle(tf);
if (retmethod == RETstack)
{
// If function returns a struct, put a pointer to that
// as the first argument
::type *thidden = Type_toCtype(tf->next->pointerTo());
char hiddenparam[5+4+1];
static int hiddenparami; // how many we've generated so far
sprintf(hiddenparam,"__HID%d",++hiddenparami);
shidden = symbol_name(hiddenparam,SCparameter,thidden);
shidden->Sflags |= SFLtrue | SFLfree;
if (fd->nrvo_can && fd->nrvo_var && fd->nrvo_var->nestedrefs.dim)
type_setcv(&shidden->Stype, shidden->Stype->Tty | mTYvolatile);
irs.shidden = shidden;
fd->shidden = shidden;
}
else
{
// Register return style cannot make nrvo.
// Auto functions keep the nrvo_can flag up to here,
// so we should eliminate it before entering backend.
fd->nrvo_can = 0;
}
if (fd->vthis)
{
assert(!fd->vthis->csym);
sthis = toSymbol(fd->vthis);
irs.sthis = sthis;
if (!(f->Fflags3 & Fnested))
f->Fflags3 |= Fmember;
}
// Estimate number of parameters, pi
size_t pi = (fd->v_arguments != NULL);
if (fd->parameters)
pi += fd->parameters->dim;
// Create a temporary buffer, params[], to hold function parameters
Symbol *paramsbuf[10];
Symbol **params = paramsbuf; // allocate on stack if possible
if (pi + 2 > 10) // allow extra 2 for sthis and shidden
{
params = (Symbol **)malloc((pi + 2) * sizeof(Symbol *));
assert(params);
}
// Get the actual number of parameters, pi, and fill in the params[]
pi = 0;
if (fd->v_arguments)
{
params[pi] = toSymbol(fd->v_arguments);
pi += 1;
}
if (fd->parameters)
{
for (size_t i = 0; i < fd->parameters->dim; i++)
{
VarDeclaration *v = (*fd->parameters)[i];
//printf("param[%d] = %p, %s\n", i, v, v->toChars());
assert(!v->csym);
params[pi + i] = toSymbol(v);
}
pi += fd->parameters->dim;
}
if (reverse)
{
// Reverse params[] entries
for (size_t i = 0; i < pi/2; i++)
{
Symbol *sptmp = params[i];
params[i] = params[pi - 1 - i];
params[pi - 1 - i] = sptmp;
}
}
if (shidden)
{
#if 0
// shidden becomes last parameter
params[pi] = shidden;
#else
// shidden becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = shidden;
#endif
pi++;
}
if (sthis)
{
#if 0
// sthis becomes last parameter
params[pi] = sthis;
#else
// sthis becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = sthis;
#endif
pi++;
}
if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) &&
fd->linkage != LINKd && shidden && sthis)
{
/* swap shidden and sthis
*/
Symbol *sp = params[0];
params[0] = params[1];
params[1] = sp;
}
for (size_t i = 0; i < pi; i++)
{
Symbol *sp = params[i];
sp->Sclass = SCparameter;
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara;
symbol_add(sp);
}
// Determine register assignments
if (pi)
{
FuncParamRegs fpr(tyf);
for (size_t i = 0; i < pi; i++)
{
Symbol *sp = params[i];
if (fpr.alloc(sp->Stype, sp->Stype->Tty, &sp->Spreg, &sp->Spreg2))
{
sp->Sclass = (config.exe == EX_WIN64) ? SCshadowreg : SCfastpar;
sp->Sfl = (sp->Sclass == SCshadowreg) ? FLpara : FLfast;
}
}
}
// Done with params
if (params != paramsbuf)
free(params);
params = NULL;
if (fd->fbody)
{
localgot = NULL;
Statement *sbody = fd->fbody;
Blockx bx;
memset(&bx,0,sizeof(bx));
bx.startblock = block_calloc();
bx.curblock = bx.startblock;
bx.funcsym = s;
bx.scope_index = -1;
bx.classdec = cd;
bx.member = fd;
bx.module = fd->getModule();
irs.blx = &bx;
/* Doing this in semantic3() caused all kinds of problems:
* 1. couldn't reliably get the final mangling of the function name due to fwd refs
* 2. impact on function inlining
* 3. what to do when writing out .di files, or other pretty printing
*/
if (global.params.trace && !fd->isCMain())
{
/* The profiler requires TLS, and TLS may not be set up yet when C main()
* gets control (i.e. OSX), leading to a crash.
*/
/* Wrap the entire function body in:
* trace_pro("funcname");
* try
* body;
* finally
* _c_trace_epi();
*/
StringExp *se = StringExp::create(Loc(), s->Sident);
se->type = Type::tstring;
se->type = se->type->semantic(Loc(), NULL);
Expressions *exps = Expressions_create();
exps->push(se);
FuncDeclaration *fdpro = FuncDeclaration::genCfunc(NULL, Type::tvoid, "trace_pro");
Expression *ec = VarExp::create(Loc(), fdpro);
Expression *e = CallExp::create(Loc(), ec, exps);
e->type = Type::tvoid;
Statement *sp = ExpStatement::create(fd->loc, e);
FuncDeclaration *fdepi = FuncDeclaration::genCfunc(NULL, Type::tvoid, "_c_trace_epi");
ec = VarExp::create(Loc(), fdepi);
e = CallExp::create(Loc(), ec);
e->type = Type::tvoid;
Statement *sf = ExpStatement::create(fd->loc, e);
Statement *stf;
if (sbody->blockExit(fd, false) == BEfallthru)
stf = CompoundStatement::create(Loc(), sbody, sf);
else
stf = TryFinallyStatement::create(Loc(), sbody, sf);
sbody = CompoundStatement::create(Loc(), sp, stf);
}
buildClosure(fd, &irs);
#if TARGET_WINDOS
if (fd->isSynchronized() && cd && config.flags2 & CFG2seh &&
!fd->isStatic() && !sbody->usesEH() && !global.params.trace)
{
/* The "jmonitor" hack uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
Statement_toIR(sbody, &irs);
bx.curblock->BC = BCret;
f->Fstartblock = bx.startblock;
// einit = el_combine(einit,bx.init);
if (fd->isCtorDeclaration())
{
assert(sthis);
for (block *b = f->Fstartblock; b; b = b->Bnext)
{
if (b->BC == BCret)
{
b->BC = BCretexp;
b->Belem = el_combine(b->Belem, el_var(sthis));
}
}
}
}
// If static constructor
if (fd->isSharedStaticCtorDeclaration()) // must come first because it derives from StaticCtorDeclaration
{
ssharedctors.push(s);
}
else if (fd->isStaticCtorDeclaration())
{
sctors.push(s);
}
// If static destructor
if (fd->isSharedStaticDtorDeclaration()) // must come first because it derives from StaticDtorDeclaration
{
SharedStaticDtorDeclaration *f = fd->isSharedStaticDtorDeclaration();
assert(f);
if (f->vgate)
{
/* Increment destructor's vgate at construction time
*/
esharedctorgates.push(f);
}
sshareddtors.shift(s);
}
else if (fd->isStaticDtorDeclaration())
{
StaticDtorDeclaration *f = fd->isStaticDtorDeclaration();
assert(f);
if (f->vgate)
{
/* Increment destructor's vgate at construction time
*/
ectorgates.push(f);
}
sdtors.shift(s);
}
// If unit test
if (ud)
{
stests.push(s);
}
if (global.errors)
{
// Restore symbol table
cstate.CSpsymtab = symtabsave;
return;
}
writefunc(s);
// Restore symbol table
cstate.CSpsymtab = symtabsave;
if (fd->isExport())
objmod->export_symbol(s, Para.offset);
for (size_t i = 0; i < irs.deferToObj->dim; i++)
{
Dsymbol *s = (*irs.deferToObj)[i];
toObjFile(s, false);
}
if (ud)
{
for (size_t i = 0; i < ud->deferredNested.dim; i++)
{
FuncDeclaration *fd = ud->deferredNested[i];
toObjFile(fd, false);
}
}
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
// A hack to get a pointer to this function put in the .dtors segment
if (fd->ident && memcmp(fd->ident->toChars(), "_STD", 4) == 0)
objmod->staticdtor(s);
#endif
if (irs.startaddress)
{
//printf("Setting start address\n");
objmod->startaddress(irs.startaddress);
}
}
void genObjFile(Module *m, bool multiobj)
{
//EEcontext *ee = env->getEEcontext();
//printf("Module::genobjfile(multiobj = %d) %s\n", multiobj, m->toChars());
if (m->ident == Id::entrypoint)
{
bool v = global.params.verbose;
global.params.verbose = false;
for (size_t i = 0; i < m->members->dim; i++)
{
Dsymbol *member = (*m->members)[i];
//printf("toObjFile %s %s\n", member->kind(), member->toChars());
toObjFile(member, global.params.multiobj);
}
global.params.verbose = v;
return;
}
lastmname = m->srcfile->toChars();
objmod->initfile(lastmname, NULL, m->toPrettyChars());
eictor = NULL;
ictorlocalgot = NULL;
sctors.setDim(0);
ectorgates.setDim(0);
sdtors.setDim(0);
ssharedctors.setDim(0);
esharedctorgates.setDim(0);
sshareddtors.setDim(0);
stests.setDim(0);
if (m->doppelganger)
{
/* Generate a reference to the moduleinfo, so the module constructors
* and destructors get linked in.
*/
Module *mod = m->aimports[0];
assert(mod);
if (mod->sictor || mod->sctor || mod->sdtor || mod->ssharedctor || mod->sshareddtor)
{
Symbol *s = toSymbol(mod);
//objextern(s);
//if (!s->Sxtrnnum) objextdef(s->Sident);
if (!s->Sxtrnnum)
{
//printf("%s\n", s->Sident);
#if 0 /* This should work, but causes optlink to fail in common/newlib.asm */
objextdef(s->Sident);
#else
Symbol *sref = symbol_generate(SCstatic, type_fake(TYnptr));
sref->Sfl = FLdata;
dtxoff(&sref->Sdt, s, 0, TYnptr);
outdata(sref);
#endif
}
}
}
if (global.params.cov)
{
/* Create coverage identifier:
* private uint[numlines] __coverage;
*/
m->cov = symbol_calloc("__coverage");
m->cov->Stype = type_fake(TYint);
m->cov->Stype->Tmangle = mTYman_c;
m->cov->Stype->Tcount++;
m->cov->Sclass = SCstatic;
m->cov->Sfl = FLdata;
dtnzeros(&m->cov->Sdt, 4 * m->numlines);
outdata(m->cov);
slist_add(m->cov);
m->covb = (unsigned *)calloc((m->numlines + 32) / 32, sizeof(*m->covb));
}
for (size_t i = 0; i < m->members->dim; i++)
{
Dsymbol *member = (*m->members)[i];
//printf("toObjFile %s %s\n", member->kind(), member->toChars());
toObjFile(member, multiobj);
}
if (global.params.cov)
{
/* Generate
* bit[numlines] __bcoverage;
*/
Symbol *bcov = symbol_calloc("__bcoverage");
bcov->Stype = type_fake(TYuint);
bcov->Stype->Tcount++;
bcov->Sclass = SCstatic;
bcov->Sfl = FLdata;
dtnbytes(&bcov->Sdt, (m->numlines + 32) / 32 * sizeof(*m->covb), (char *)m->covb);
outdata(bcov);
free(m->covb);
m->covb = NULL;
/* Generate:
* _d_cover_register(uint[] __coverage, BitArray __bcoverage, string filename);
* and prepend it to the static constructor.
*/
/* t will be the type of the functions generated:
* extern (C) void func();
*/
type *t = type_function(TYnfunc, NULL, 0, false, tsvoid);
t->Tmangle = mTYman_c;
m->sictor = toSymbolX(m, "__modictor", SCglobal, t, "FZv");
cstate.CSpsymtab = &m->sictor->Sfunc->Flocsym;
localgot = ictorlocalgot;
elem *ecov = el_pair(TYdarray, el_long(TYsize_t, m->numlines), el_ptr(m->cov));
elem *ebcov = el_pair(TYdarray, el_long(TYsize_t, m->numlines), el_ptr(bcov));
if (config.exe == EX_WIN64)
{
ecov = addressElem(ecov, Type::tvoid->arrayOf(), false);
ebcov = addressElem(ebcov, Type::tvoid->arrayOf(), false);
}
elem *efilename = toEfilename(m);
if (config.exe == EX_WIN64)
efilename = addressElem(efilename, Type::tstring, true);
elem *e = el_params(
el_long(TYuchar, global.params.covPercent),
ecov,
ebcov,
efilename,
NULL);
e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_DCOVER2]), e);
eictor = el_combine(e, eictor);
ictorlocalgot = localgot;
}
// If coverage / static constructor / destructor / unittest calls
if (eictor || sctors.dim || ectorgates.dim || sdtors.dim ||
ssharedctors.dim || esharedctorgates.dim || sshareddtors.dim || stests.dim)
{
if (eictor)
{
localgot = ictorlocalgot;
block *b = block_calloc();
b->BC = BCret;
b->Belem = eictor;
m->sictor->Sfunc->Fstartline.Sfilename = m->arg;
m->sictor->Sfunc->Fstartblock = b;
writefunc(m->sictor);
}
m->sctor = callFuncsAndGates(m, &sctors, &ectorgates, "__modctor");
m->sdtor = callFuncsAndGates(m, &sdtors, NULL, "__moddtor");
m->ssharedctor = callFuncsAndGates(m, &ssharedctors, (StaticDtorDeclarations *)&esharedctorgates, "__modsharedctor");
m->sshareddtor = callFuncsAndGates(m, &sshareddtors, NULL, "__modshareddtor");
m->stest = callFuncsAndGates(m, &stests, NULL, "__modtest");
if (m->doppelganger)
genModuleInfo(m);
}
if (m->doppelganger)
{
objmod->termfile();
return;
}
if (global.params.multiobj)
{
/* This is necessary because the main .obj for this module is written
* first, but determining whether marray or massert or munittest are needed is done
* possibly later in the doppelganger modules.
* Another way to fix it is do the main one last.
*/
toModuleAssert(m);
toModuleUnittest(m);
toModuleArray(m);
}
/* Always generate module info, because of templates and -cov.
* But module info needs the runtime library, so disable it for betterC.
*/
if (!global.params.betterC /*|| needModuleInfo()*/)
genModuleInfo(m);
genhelpers(m, false);
objmod->termfile();
}
void optfunc()
{
#if !HTOD
block *b;
int iter; // iteration count
clock_t starttime;
cmes ("optfunc()\n");
dbg_optprint("optfunc\n");
#ifdef DEBUG
if (debugb)
{
dbg_printf("................Before optimization.........\n");
WRfunc();
}
#endif
iter = 0;
if (localgot)
{ // Initialize with:
// localgot = OPgot;
elem *e = el_long(TYnptr, 0);
e->Eoper = OPgot;
e = el_bin(OPeq, TYnptr, el_var(localgot), e);
startblock->Belem = el_combine(e, startblock->Belem);
}
// Each pass through the loop can reduce only one level of comma expression.
// The infinite loop check needs to take this into account.
int iterationLimit = 0;
for (b = startblock; b; b = b->Bnext)
{
if (!b->Belem)
continue;
int d = el_countCommas(b->Belem);
if (d > iterationLimit)
iterationLimit = d;
}
// Some functions can take enormous amounts of time to optimize.
// We try to put a lid on it.
starttime = clock();
do
{
//printf("iter = %d\n", iter);
#if TX86
if (++iter > 200)
{ assert(iter < iterationLimit); // infinite loop check
break;
}
#else
L1:
#endif
#if MARS
util_progress();
#else
file_progress();
#endif
//printf("optelem\n");
/* canonicalize the trees */
for (b = startblock; b; b = b->Bnext)
if (b->Belem)
{
#if DEBUG
if(debuge)
{
dbg_printf("before\n");
elem_print(b->Belem);
//el_check(b->Belem);
}
#endif
b->Belem = doptelem(b->Belem,bc_goal[b->BC] | GOALagain);
#if DEBUG
if(0 && debugf)
{
dbg_printf("after\n");
elem_print(b->Belem);
}
#endif
}
//printf("blockopt\n");
#if TX86
if (mfoptim & MFdc)
blockopt(0); // do block optimization
out_regcand(&globsym); // recompute register candidates
changes = 0; /* no changes yet */
if (mfoptim & MFcnp)
constprop(); /* make relationals unsigned */
if (mfoptim & (MFli | MFliv))
#else
if (config.optimized && (mfoptim & MFdc))
blockopt(0); // do block optimization
dbg_optprint("blockopt\n");
out_regcand(); // recompute register candidates
changes = 0; /* no changes yet */
dbg_optprint("constprop\n");
if (config.optimized && (mfoptim & MFcnp))
constprop(); /* make relationals unsigned */
dbg_optprint("loopopt\n");
if (config.optimized && (mfoptim & (MFli | MFliv)))
#endif
loopopt(); /* remove loop invariants and */
/* induction vars */
/* do loop rotation */
else
for (b = startblock; b; b = b->Bnext)
b->Bweight = 1;
dbg_optprint("boolopt\n");
#if TX86
if (mfoptim & MFcnp)
boolopt(); // optimize boolean values
if (changes && mfoptim & MFloop && (clock() - starttime) < 30 * CLOCKS_PER_SEC)
continue;
if (mfoptim & MFcnp)
constprop(); /* constant propagation */
if (mfoptim & MFcp)
copyprop(); /* do copy propagation */
/* Floating point constants and string literals need to be
* replaced with loads from variables in read-only data.
* This can result in localgot getting needed.
*/
symbol *localgotsave = localgot;
for (b = startblock; b; b = b->Bnext)
{
if (b->Belem)
{
b->Belem = doptelem(b->Belem,bc_goal[b->BC] | GOALstruct);
if (b->Belem)
b->Belem = el_convert(b->Belem);
}
}
if (localgot != localgotsave)
{ /* Looks like we did need localgot, initialize with:
* localgot = OPgot;
*/
elem *e = el_long(TYnptr, 0);
e->Eoper = OPgot;
e = el_bin(OPeq, TYnptr, el_var(localgot), e);
startblock->Belem = el_combine(e, startblock->Belem);
}
/* localize() is after localgot, otherwise we wind up with
* more than one OPgot in a function, which mucks up OSX
* code generation which assumes at most one (localgotoffset).
*/
if (mfoptim & MFlocal)
localize(); // improve expression locality
if (mfoptim & MFda)
rmdeadass(); /* remove dead assignments */
cmes2 ("changes = %d\n", changes);
if (!(changes && mfoptim & MFloop && (clock() - starttime) < 30 * CLOCKS_PER_SEC))
break;
} while (1);
cmes2("%d iterations\n",iter);
if (mfoptim & MFdc)
blockopt(1); // do block optimization
#else
if (config.optimized && (mfoptim & MFcnp))
boolopt(); // optimize boolean values
util_progress();
if (changes)
goto L1;
dbg_optprint("constprop\n");
if (config.optimized && (mfoptim & MFcnp))
constprop(); /* constant propagation */
dbg_optprint("copyprop\n");
if (config.optimized && (mfoptim & MFcp))
copyprop(); /* do copy propagation */
dbg_optprint("localize\n");
if (config.optimized && (mfoptim & MFlocal))
localize(); // improve expression locality
dbg_optprint("rmdeadass\n");
if (config.optimized && (mfoptim & MFda))
rmdeadass(); /* remove dead assignments */
cmes2 ("changes = %d\n", changes);
iter++;
assert (iter < 80); /* infinite loop check */
} while (changes && (config.optimized) && (mfoptim & MFloop));
/*************************************
* Closures are implemented by taking the local variables that
* need to survive the scope of the function, and copying them
* into a gc allocated chuck of memory. That chunk, called the
* closure here, is inserted into the linked list of stack
* frames instead of the usual stack frame.
*
* buildClosure() inserts code just after the function prolog
* is complete. It allocates memory for the closure, allocates
* a local variable (sclosure) to point to it, inserts into it
* the link to the enclosing frame, and copies into it the parameters
* that are referred to in nested functions.
* In VarExp::toElem and SymOffExp::toElem, when referring to a
* variable that is in a closure, takes the offset from sclosure rather
* than from the frame pointer.
*
* getEthis() and NewExp::toElem need to use sclosure, if set, rather
* than the current frame pointer.
*/
void buildClosure(FuncDeclaration *fd, IRState *irs)
{
if (fd->needsClosure())
{
// Generate closure on the heap
// BUG: doesn't capture variadic arguments passed to this function
/* BUG: doesn't handle destructors for the local variables.
* The way to do it is to make the closure variables the fields
* of a class object:
* class Closure {
* vtbl[]
* monitor
* ptr to destructor
* sthis
* ... closure variables ...
* ~this() { call destructor }
* }
*/
//printf("FuncDeclaration::buildClosure() %s\n", toChars());
/* Generate type name for closure struct */
const char *name1 = "CLOSURE.";
const char *name2 = fd->toPrettyChars();
size_t namesize = strlen(name1)+strlen(name2)+1;
char *closname = (char *) calloc(namesize, sizeof(char));
strcat(strcat(closname, name1), name2);
/* Build type for closure */
type *Closstru = type_struct_class(closname, Target::ptrsize, 0, NULL, NULL, false, false, true);
symbol_struct_addField(Closstru->Ttag, "__chain", Type_toCtype(Type::tvoidptr), 0);
Symbol *sclosure;
sclosure = symbol_name("__closptr", SCauto, type_pointer(Closstru));
sclosure->Sflags |= SFLtrue | SFLfree;
symbol_add(sclosure);
irs->sclosure = sclosure;
unsigned offset = Target::ptrsize; // leave room for previous sthis
for (size_t i = 0; i < fd->closureVars.dim; i++)
{
VarDeclaration *v = fd->closureVars[i];
//printf("closure var %s\n", v->toChars());
assert(v->isVarDeclaration());
if (v->needsAutoDtor())
{
/* Because the value needs to survive the end of the scope!
*/
v->error("has scoped destruction, cannot build closure");
}
if (v->isargptr)
{
/* See Bugzilla 2479
* This is actually a bug, but better to produce a nice
* message at compile time rather than memory corruption at runtime
*/
v->error("cannot reference variadic arguments from closure");
}
/* Align and allocate space for v in the closure
* just like AggregateDeclaration::addField() does.
*/
unsigned memsize;
unsigned memalignsize;
structalign_t xalign;
if (v->storage_class & STClazy)
{
/* Lazy variables are really delegates,
* so give same answers that TypeDelegate would
*/
memsize = Target::ptrsize * 2;
memalignsize = memsize;
xalign = STRUCTALIGN_DEFAULT;
}
else if (ISWIN64REF(v))
{
memsize = v->type->size();
memalignsize = v->type->alignsize();
xalign = v->alignment;
}
else if (ISREF(v, NULL))
{
// reference parameters are just pointers
memsize = Target::ptrsize;
memalignsize = memsize;
xalign = STRUCTALIGN_DEFAULT;
}
else
{
memsize = v->type->size();
memalignsize = v->type->alignsize();
xalign = v->alignment;
}
AggregateDeclaration::alignmember(xalign, memalignsize, &offset);
v->offset = offset;
offset += memsize;
/* Set Sscope to closure */
Symbol *vsym = toSymbol(v);
assert(vsym->Sscope == NULL);
vsym->Sscope = sclosure;
/* Add variable as closure type member */
symbol_struct_addField(Closstru->Ttag, vsym->Sident, vsym->Stype, v->offset);
//printf("closure field %s: memalignsize: %i, offset: %i\n", vsym->Sident, memalignsize, v->offset);
/* Can't do nrvo if the variable is put in a closure, since
* what the shidden points to may no longer exist.
*/
if (fd->nrvo_can && fd->nrvo_var == v)
{
fd->nrvo_can = 0;
}
}
// offset is now the size of the closure
Closstru->Ttag->Sstruct->Sstructsize = offset;
// Allocate memory for the closure
elem *e = el_long(TYsize_t, offset);
e = el_bin(OPcall, TYnptr, el_var(getRtlsym(RTLSYM_ALLOCMEMORY)), e);
toTraceGC(irs, e, &fd->loc);
// Assign block of memory to sclosure
// sclosure = allocmemory(sz);
e = el_bin(OPeq, TYvoid, el_var(sclosure), e);
// Set the first element to sthis
// *(sclosure + 0) = sthis;
elem *ethis;
if (irs->sthis)
ethis = el_var(irs->sthis);
else
ethis = el_long(TYnptr, 0);
elem *ex = el_una(OPind, TYnptr, el_var(sclosure));
ex = el_bin(OPeq, TYnptr, ex, ethis);
e = el_combine(e, ex);
// Copy function parameters into closure
for (size_t i = 0; i < fd->closureVars.dim; i++)
{
VarDeclaration *v = fd->closureVars[i];
if (!v->isParameter())
continue;
tym_t tym = totym(v->type);
bool win64ref = ISWIN64REF(v);
if (win64ref)
{
if (v->storage_class & STClazy)
tym = TYdelegate;
}
else if (ISREF(v, NULL))
tym = TYnptr; // reference parameters are just pointers
else if (v->storage_class & STClazy)
tym = TYdelegate;
ex = el_bin(OPadd, TYnptr, el_var(sclosure), el_long(TYsize_t, v->offset));
ex = el_una(OPind, tym, ex);
elem *ev = el_var(toSymbol(v));
if (win64ref)
{
ev->Ety = TYnptr;
ev = el_una(OPind, tym, ev);
if (tybasic(ev->Ety) == TYstruct || tybasic(ev->Ety) == TYarray)
ev->ET = Type_toCtype(v->type);
}
if (tybasic(ex->Ety) == TYstruct || tybasic(ex->Ety) == TYarray)
{
::type *t = Type_toCtype(v->type);
ex->ET = t;
ex = el_bin(OPstreq, tym, ex, ev);
ex->ET = t;
}
else
ex = el_bin(OPeq, tym, ex, ev);
e = el_combine(e, ex);
}
block_appendexp(irs->blx->curblock, e);
}
}
void FuncDeclaration::buildClosure(IRState *irs)
{
if (needsClosure())
{ // Generate closure on the heap
// BUG: doesn't capture variadic arguments passed to this function
#if DMDV2
/* BUG: doesn't handle destructors for the local variables.
* The way to do it is to make the closure variables the fields
* of a class object:
* class Closure
* { vtbl[]
* monitor
* ptr to destructor
* sthis
* ... closure variables ...
* ~this() { call destructor }
* }
*/
#endif
//printf("FuncDeclaration::buildClosure()\n");
Symbol *sclosure;
sclosure = symbol_name("__closptr",SCauto,Type::tvoidptr->toCtype());
sclosure->Sflags |= SFLtrue | SFLfree;
symbol_add(sclosure);
irs->sclosure = sclosure;
unsigned offset = PTRSIZE; // leave room for previous sthis
for (size_t i = 0; i < closureVars.dim; i++)
{ VarDeclaration *v = closureVars[i];
assert(v->isVarDeclaration());
#if DMDV2
if (v->needsAutoDtor())
/* Because the value needs to survive the end of the scope!
*/
v->error("has scoped destruction, cannot build closure");
if (v->isargptr)
/* See Bugzilla 2479
* This is actually a bug, but better to produce a nice
* message at compile time rather than memory corruption at runtime
*/
v->error("cannot reference variadic arguments from closure");
#endif
/* Align and allocate space for v in the closure
* just like AggregateDeclaration::addField() does.
*/
unsigned memsize;
unsigned memalignsize;
structalign_t xalign;
#if DMDV2
if (v->storage_class & STClazy)
{
/* Lazy variables are really delegates,
* so give same answers that TypeDelegate would
*/
memsize = PTRSIZE * 2;
memalignsize = memsize;
xalign = global.structalign;
}
else if (v->isRef() || v->isOut())
{ // reference parameters are just pointers
memsize = PTRSIZE;
memalignsize = memsize;
xalign = global.structalign;
}
else
#endif
{
memsize = v->type->size();
memalignsize = v->type->alignsize();
xalign = v->alignment;
}
AggregateDeclaration::alignmember(xalign, memalignsize, &offset);
v->offset = offset;
offset += memsize;
/* Can't do nrvo if the variable is put in a closure, since
* what the shidden points to may no longer exist.
*/
if (nrvo_can && nrvo_var == v)
{
nrvo_can = 0;
}
}
// offset is now the size of the closure
// Allocate memory for the closure
elem *e;
e = el_long(TYsize_t, offset);
e = el_bin(OPcall, TYnptr, el_var(rtlsym[RTLSYM_ALLOCMEMORY]), e);
// Assign block of memory to sclosure
// sclosure = allocmemory(sz);
e = el_bin(OPeq, TYvoid, el_var(sclosure), e);
// Set the first element to sthis
// *(sclosure + 0) = sthis;
elem *ethis;
if (irs->sthis)
ethis = el_var(irs->sthis);
else
ethis = el_long(TYnptr, 0);
elem *ex = el_una(OPind, TYnptr, el_var(sclosure));
ex = el_bin(OPeq, TYnptr, ex, ethis);
e = el_combine(e, ex);
// Copy function parameters into closure
for (size_t i = 0; i < closureVars.dim; i++)
{ VarDeclaration *v = closureVars[i];
if (!v->isParameter())
continue;
tym_t tym = v->type->totym();
if (
#if !SARRAYVALUE
v->type->toBasetype()->ty == Tsarray ||
#endif
v->isOut() || v->isRef())
tym = TYnptr; // reference parameters are just pointers
#if DMDV2
else if (v->storage_class & STClazy)
tym = TYdelegate;
#endif
ex = el_bin(OPadd, TYnptr, el_var(sclosure), el_long(TYsize_t, v->offset));
ex = el_una(OPind, tym, ex);
if (tybasic(ex->Ety) == TYstruct || tybasic(ex->Ety) == TYarray)
{
::type *t = v->type->toCtype();
ex->ET = t;
ex = el_bin(OPstreq, tym, ex, el_var(v->toSymbol()));
ex->ET = t;
}
else
ex = el_bin(OPeq, tym, ex, el_var(v->toSymbol()));
e = el_combine(e, ex);
}
block_appendexp(irs->blx->curblock, e);
}
}
void FuncDeclaration::toObjFile(int multiobj)
{
FuncDeclaration *func = this;
ClassDeclaration *cd = func->parent->isClassDeclaration();
int reverse;
int has_arguments;
//printf("FuncDeclaration::toObjFile(%p, %s.%s)\n", func, parent->toChars(), func->toChars());
//if (type) printf("type = %s\n", func->type->toChars());
#if 0
//printf("line = %d\n",func->getWhere() / LINEINC);
EEcontext *ee = env->getEEcontext();
if (ee->EEcompile == 2)
{
if (ee->EElinnum < (func->getWhere() / LINEINC) ||
ee->EElinnum > (func->endwhere / LINEINC)
)
return; // don't compile this function
ee->EEfunc = func->toSymbol();
}
#endif
if (semanticRun >= PASSobj) // if toObjFile() already run
return;
// If errors occurred compiling it, such as bugzilla 6118
if (type && type->ty == Tfunction && ((TypeFunction *)type)->next->ty == Terror)
return;
if (!func->fbody)
{
return;
}
if (func->isUnitTestDeclaration() && !global.params.useUnitTests)
return;
if (multiobj && !isStaticDtorDeclaration() && !isStaticCtorDeclaration())
{ obj_append(this);
return;
}
assert(semanticRun == PASSsemantic3done);
semanticRun = PASSobj;
if (global.params.verbose)
printf("function %s\n",func->toChars());
Symbol *s = func->toSymbol();
func_t *f = s->Sfunc;
#if TARGET_WINDOS
/* This is done so that the 'this' pointer on the stack is the same
* distance away from the function parameters, so that an overriding
* function can call the nested fdensure or fdrequire of its overridden function
* and the stack offsets are the same.
*/
if (isVirtual() && (fensure || frequire))
f->Fflags3 |= Ffakeeh;
#endif
#if TARGET_OSX
s->Sclass = SCcomdat;
#else
s->Sclass = SCglobal;
#endif
for (Dsymbol *p = parent; p; p = p->parent)
{
if (p->isTemplateInstance())
{
s->Sclass = SCcomdat;
break;
}
}
/* Vector operations should be comdat's
*/
if (isArrayOp)
s->Sclass = SCcomdat;
if (isNested())
{
// if (!(config.flags3 & CFG3pic))
// s->Sclass = SCstatic;
f->Fflags3 |= Fnested;
}
else
{
const char *libname = (global.params.symdebug)
? global.params.debuglibname
: global.params.defaultlibname;
// Pull in RTL startup code
if (func->isMain())
{ objextdef("_main");
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
obj_ehsections(); // initialize exception handling sections
#endif
#if TARGET_WINDOS
objextdef("__acrtused_con");
#endif
obj_includelib(libname);
s->Sclass = SCglobal;
}
else if (strcmp(s->Sident, "main") == 0 && linkage == LINKc)
{
#if TARGET_WINDOS
objextdef("__acrtused_con"); // bring in C startup code
obj_includelib("snn.lib"); // bring in C runtime library
#endif
s->Sclass = SCglobal;
}
else if (func->isWinMain())
{
objextdef("__acrtused");
obj_includelib(libname);
s->Sclass = SCglobal;
}
// Pull in RTL startup code
else if (func->isDllMain())
{
objextdef("__acrtused_dll");
obj_includelib(libname);
s->Sclass = SCglobal;
}
}
cstate.CSpsymtab = &f->Flocsym;
// Find module m for this function
Module *m = NULL;
for (Dsymbol *p = parent; p; p = p->parent)
{
m = p->isModule();
if (m)
break;
}
IRState irs(m, func);
Dsymbols deferToObj; // write these to OBJ file later
irs.deferToObj = &deferToObj;
TypeFunction *tf;
enum RET retmethod;
symbol *shidden = NULL;
Symbol *sthis = NULL;
tym_t tyf;
tyf = tybasic(s->Stype->Tty);
//printf("linkage = %d, tyf = x%x\n", linkage, tyf);
reverse = tyrevfunc(s->Stype->Tty);
assert(func->type->ty == Tfunction);
tf = (TypeFunction *)(func->type);
has_arguments = (tf->linkage == LINKd) && (tf->varargs == 1);
retmethod = tf->retStyle();
if (retmethod == RETstack)
{
// If function returns a struct, put a pointer to that
// as the first argument
::type *thidden = tf->next->pointerTo()->toCtype();
char hiddenparam[5+4+1];
static int hiddenparami; // how many we've generated so far
sprintf(hiddenparam,"__HID%d",++hiddenparami);
shidden = symbol_name(hiddenparam,SCparameter,thidden);
shidden->Sflags |= SFLtrue | SFLfree;
#if DMDV1
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedref)
#else
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedrefs.dim)
#endif
type_setcv(&shidden->Stype, shidden->Stype->Tty | mTYvolatile);
irs.shidden = shidden;
this->shidden = shidden;
}
else
{ // Register return style cannot make nrvo.
// Auto functions keep the nrvo_can flag up to here,
// so we should eliminate it before entering backend.
nrvo_can = 0;
}
if (vthis)
{
assert(!vthis->csym);
sthis = vthis->toSymbol();
irs.sthis = sthis;
if (!(f->Fflags3 & Fnested))
f->Fflags3 |= Fmember;
}
Symbol **params;
unsigned pi;
// Estimate number of parameters, pi
pi = (v_arguments != NULL);
if (parameters)
pi += parameters->dim;
// Allow extra 2 for sthis and shidden
params = (Symbol **)alloca((pi + 2) * sizeof(Symbol *));
// Get the actual number of parameters, pi, and fill in the params[]
pi = 0;
if (v_arguments)
{
params[pi] = v_arguments->toSymbol();
pi += 1;
}
if (parameters)
{
for (size_t i = 0; i < parameters->dim; i++)
{ VarDeclaration *v = (*parameters)[i];
if (v->csym)
{
error("compiler error, parameter '%s', bugzilla 2962?", v->toChars());
assert(0);
}
params[pi + i] = v->toSymbol();
}
pi += parameters->dim;
}
if (reverse)
{ // Reverse params[] entries
for (size_t i = 0; i < pi/2; i++)
{
Symbol *sptmp = params[i];
params[i] = params[pi - 1 - i];
params[pi - 1 - i] = sptmp;
}
}
if (shidden)
{
#if 0
// shidden becomes last parameter
params[pi] = shidden;
#else
// shidden becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = shidden;
#endif
pi++;
}
if (sthis)
{
#if 0
// sthis becomes last parameter
params[pi] = sthis;
#else
// sthis becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = sthis;
#endif
pi++;
}
if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) &&
linkage != LINKd && shidden && sthis)
{
/* swap shidden and sthis
*/
Symbol *sp = params[0];
params[0] = params[1];
params[1] = sp;
}
for (size_t i = 0; i < pi; i++)
{ Symbol *sp = params[i];
sp->Sclass = SCparameter;
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara;
symbol_add(sp);
}
// Determine register assignments
if (pi)
{
size_t numintegerregs = 0, numfloatregs = 0;
const unsigned char* argregs = getintegerparamsreglist(tyf, &numintegerregs);
const unsigned char* floatregs = getfloatparamsreglist(tyf, &numfloatregs);
// Order of assignment of pointer or integer parameters
int r = 0;
int xmmcnt = 0;
for (size_t i = 0; i < pi; i++)
{ Symbol *sp = params[i];
tym_t ty = tybasic(sp->Stype->Tty);
// BUG: doesn't work for structs
if (r < numintegerregs)
{
if ((I64 || (i == 0 && (tyf == TYjfunc || tyf == TYmfunc))) && type_jparam(sp->Stype))
{
sp->Sclass = SCfastpar;
sp->Spreg = argregs[r];
sp->Sfl = FLauto;
++r;
}
}
if (xmmcnt < numfloatregs)
{
if (tyxmmreg(ty))
{
sp->Sclass = SCfastpar;
sp->Spreg = floatregs[xmmcnt];
sp->Sfl = FLauto;
++xmmcnt;
}
}
}
}
if (func->fbody)
{ block *b;
Blockx bx;
Statement *sbody;
localgot = NULL;
sbody = func->fbody;
memset(&bx,0,sizeof(bx));
bx.startblock = block_calloc();
bx.curblock = bx.startblock;
bx.funcsym = s;
bx.scope_index = -1;
bx.classdec = cd;
bx.member = func;
bx.module = getModule();
irs.blx = &bx;
#if DMDV2
buildClosure(&irs);
#endif
#if 0
if (func->isSynchronized())
{
if (cd)
{ elem *esync;
if (func->isStatic())
{ // monitor is in ClassInfo
esync = el_ptr(cd->toSymbol());
}
else
{ // 'this' is the monitor
esync = el_var(sthis);
}
if (func->isStatic() || sbody->usesEH() ||
!(config.flags2 & CFG2seh))
{ // BUG: what if frequire or fensure uses EH?
sbody = new SynchronizedStatement(func->loc, esync, sbody);
}
else
{
#if TARGET_WINDOS
if (config.flags2 & CFG2seh)
{
/* The "jmonitor" uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
* It isn't strictly necessary.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
el_free(esync);
}
}
else
{
error("synchronized function %s must be a member of a class", func->toChars());
}
}
#elif TARGET_WINDOS
if (func->isSynchronized() && cd && config.flags2 & CFG2seh &&
!func->isStatic() && !sbody->usesEH())
{
/* The "jmonitor" hack uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
sbody->toIR(&irs);
bx.curblock->BC = BCret;
f->Fstartblock = bx.startblock;
// einit = el_combine(einit,bx.init);
if (isCtorDeclaration())
{
assert(sthis);
for (b = f->Fstartblock; b; b = b->Bnext)
{
if (b->BC == BCret)
{
b->BC = BCretexp;
b->Belem = el_combine(b->Belem, el_var(sthis));
}
}
}
}
// If static constructor
#if DMDV2
if (isSharedStaticCtorDeclaration()) // must come first because it derives from StaticCtorDeclaration
{
ssharedctors.push(s);
}
else
#endif
if (isStaticCtorDeclaration())
{
sctors.push(s);
}
// If static destructor
#if DMDV2
if (isSharedStaticDtorDeclaration()) // must come first because it derives from StaticDtorDeclaration
{
SharedStaticDtorDeclaration *f = isSharedStaticDtorDeclaration();
assert(f);
if (f->vgate)
{ /* Increment destructor's vgate at construction time
*/
esharedctorgates.push(f);
}
sshareddtors.shift(s);
}
else
#endif
if (isStaticDtorDeclaration())
{
StaticDtorDeclaration *f = isStaticDtorDeclaration();
assert(f);
if (f->vgate)
{ /* Increment destructor's vgate at construction time
*/
ectorgates.push(f);
}
sdtors.shift(s);
}
// If unit test
if (isUnitTestDeclaration())
{
stests.push(s);
}
if (global.errors)
return;
writefunc(s);
if (isExport())
obj_export(s, Poffset);
for (size_t i = 0; i < irs.deferToObj->dim; i++)
{
Dsymbol *s = (*irs.deferToObj)[i];
FuncDeclaration *fd = s->isFuncDeclaration();
if (fd)
{ FuncDeclaration *fdp = fd->toParent2()->isFuncDeclaration();
if (fdp && fdp->semanticRun < PASSobj)
{ /* Bugzilla 7595
* FuncDeclaration::buildClosure() relies on nested functions
* being toObjFile'd after the outer function. Otherwise, the
* v->offset's for the closure variables are wrong.
* So, defer fd until after fdp is done.
*/
fdp->deferred.push(fd);
continue;
}
}
s->toObjFile(0);
}
for (size_t i = 0; i < deferred.dim; i++)
{
FuncDeclaration *fd = deferred[i];
fd->toObjFile(0);
}
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
// A hack to get a pointer to this function put in the .dtors segment
if (ident && memcmp(ident->toChars(), "_STD", 4) == 0)
obj_staticdtor(s);
#endif
#if DMDV2
if (irs.startaddress)
{
printf("Setting start address\n");
obj_startaddress(irs.startaddress);
}
#endif
}
void Module::genobjfile(int multiobj)
{
//EEcontext *ee = env->getEEcontext();
//printf("Module::genobjfile(multiobj = %d) %s\n", multiobj, toChars());
lastmname = srcfile->toChars();
obj_initfile(lastmname, NULL, toPrettyChars());
eictor = NULL;
ictorlocalgot = NULL;
sctors.setDim(0);
ectorgates.setDim(0);
sdtors.setDim(0);
ssharedctors.setDim(0);
esharedctorgates.setDim(0);
sshareddtors.setDim(0);
stests.setDim(0);
dtorcount = 0;
shareddtorcount = 0;
if (doppelganger)
{
/* Generate a reference to the moduleinfo, so the module constructors
* and destructors get linked in.
*/
Module *m = aimports[0];
assert(m);
if (m->sictor || m->sctor || m->sdtor || m->ssharedctor || m->sshareddtor)
{
Symbol *s = m->toSymbol();
//objextern(s);
//if (!s->Sxtrnnum) objextdef(s->Sident);
if (!s->Sxtrnnum)
{
//printf("%s\n", s->Sident);
#if 0 /* This should work, but causes optlink to fail in common/newlib.asm */
objextdef(s->Sident);
#else
#if ELFOBJ || MACHOBJ
int nbytes = reftoident(DATA, Offset(DATA), s, 0, I64 ? (CFoff | CFoffset64) : CFoff);
#else
int nbytes = reftoident(DATA, Doffset, s, 0, CFoff);
Doffset += nbytes;
#endif
#endif
}
}
}
if (global.params.cov)
{
/* Create coverage identifier:
* private uint[numlines] __coverage;
*/
cov = symbol_calloc("__coverage");
cov->Stype = type_fake(TYint);
cov->Stype->Tmangle = mTYman_c;
cov->Stype->Tcount++;
cov->Sclass = SCstatic;
cov->Sfl = FLdata;
#if ELFOBJ || MACHOBJ
cov->Sseg = UDATA;
#endif
dtnzeros(&cov->Sdt, 4 * numlines);
outdata(cov);
slist_add(cov);
covb = (unsigned *)calloc((numlines + 32) / 32, sizeof(*covb));
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *member = (*members)[i];
member->toObjFile(multiobj);
}
if (global.params.cov)
{
/* Generate
* bit[numlines] __bcoverage;
*/
Symbol *bcov = symbol_calloc("__bcoverage");
bcov->Stype = type_fake(TYuint);
bcov->Stype->Tcount++;
bcov->Sclass = SCstatic;
bcov->Sfl = FLdata;
#if ELFOBJ || MACHOBJ
bcov->Sseg = DATA;
#endif
dtnbytes(&bcov->Sdt, (numlines + 32) / 32 * sizeof(*covb), (char *)covb);
outdata(bcov);
free(covb);
covb = NULL;
/* Generate:
* _d_cover_register(uint[] __coverage, BitArray __bcoverage, string filename);
* and prepend it to the static constructor.
*/
/* t will be the type of the functions generated:
* extern (C) void func();
*/
type *t = type_alloc(TYnfunc);
t->Tflags |= TFprototype | TFfixed;
t->Tmangle = mTYman_c;
t->Tnext = tsvoid;
tsvoid->Tcount++;
sictor = toSymbolX("__modictor", SCglobal, t, "FZv");
cstate.CSpsymtab = &sictor->Sfunc->Flocsym;
localgot = ictorlocalgot;
elem *e;
e = el_params(el_pair(TYdarray, el_long(TYsize_t, numlines), el_ptr(cov)),
el_pair(TYdarray, el_long(TYsize_t, numlines), el_ptr(bcov)),
toEfilename(),
NULL);
e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_DCOVER]), e);
eictor = el_combine(e, eictor);
ictorlocalgot = localgot;
}
// If coverage / static constructor / destructor / unittest calls
if (eictor || sctors.dim || ectorgates.dim || sdtors.dim ||
ssharedctors.dim || esharedctorgates.dim || sshareddtors.dim || stests.dim)
{
if (eictor)
{
localgot = ictorlocalgot;
block *b = block_calloc();
b->BC = BCret;
b->Belem = eictor;
sictor->Sfunc->Fstartline.Sfilename = arg;
sictor->Sfunc->Fstartblock = b;
writefunc(sictor);
}
sctor = callFuncsAndGates(this, &sctors, &ectorgates, "__modctor");
sdtor = callFuncsAndGates(this, &sdtors, NULL, "__moddtor");
#if DMDV2
ssharedctor = callFuncsAndGates(this, &ssharedctors, (StaticDtorDeclarations *)&esharedctorgates, "__modsharedctor");
sshareddtor = callFuncsAndGates(this, &sshareddtors, NULL, "__modshareddtor");
#endif
stest = callFuncsAndGates(this, &stests, NULL, "__modtest");
if (doppelganger)
genmoduleinfo();
}
if (doppelganger)
{
obj_termfile();
return;
}
if (global.params.multiobj)
{ /* This is necessary because the main .obj for this module is written
* first, but determining whether marray or massert or munittest are needed is done
* possibly later in the doppelganger modules.
* Another way to fix it is do the main one last.
*/
toModuleAssert();
toModuleUnittest();
toModuleArray();
}
#if 1
// Always generate module info, because of templates and -cov
if (1 || needModuleInfo())
genmoduleinfo();
#endif
// If module assert
for (int i = 0; i < 3; i++)
{
Symbol *ma;
unsigned rt;
unsigned bc;
switch (i)
{
case 0: ma = marray; rt = RTLSYM_DARRAY; bc = BCexit; break;
case 1: ma = massert; rt = RTLSYM_DASSERTM; bc = BCexit; break;
case 2: ma = munittest; rt = RTLSYM_DUNITTESTM; bc = BCret; break;
default: assert(0);
}
if (ma)
{
elem *elinnum;
localgot = NULL;
// Call dassert(filename, line)
// Get sole parameter, linnum
{
Symbol *sp = symbol_calloc("linnum");
sp->Stype = type_fake(TYint);
sp->Stype->Tcount++;
sp->Sclass = SCfastpar;
size_t num;
sp->Spreg = getintegerparamsreglist(TYjfunc, &num)[0];
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara; // FLauto?
cstate.CSpsymtab = &ma->Sfunc->Flocsym;
symbol_add(sp);
elinnum = el_var(sp);
}
elem *efilename = el_ptr(toSymbol());
elem *e = el_var(rtlsym[rt]);
e = el_bin(OPcall, TYvoid, e, el_param(elinnum, efilename));
block *b = block_calloc();
b->BC = bc;
b->Belem = e;
ma->Sfunc->Fstartline.Sfilename = arg;
ma->Sfunc->Fstartblock = b;
ma->Sclass = SCglobal;
ma->Sfl = 0;
ma->Sflags |= rtlsym[rt]->Sflags & SFLexit;
writefunc(ma);
}
}
obj_termfile();
}
void Module::genobjfile(int multiobj)
{
//EEcontext *ee = env->getEEcontext();
//printf("Module::genobjfile(multiobj = %d) %s\n", multiobj, toChars());
lastmname = srcfile->toChars();
objmod->initfile(lastmname, NULL, toPrettyChars());
eictor = NULL;
ictorlocalgot = NULL;
sctors.setDim(0);
ectorgates.setDim(0);
sdtors.setDim(0);
ssharedctors.setDim(0);
esharedctorgates.setDim(0);
sshareddtors.setDim(0);
stests.setDim(0);
dtorcount = 0;
shareddtorcount = 0;
if (doppelganger)
{
/* Generate a reference to the moduleinfo, so the module constructors
* and destructors get linked in.
*/
Module *m = aimports[0];
assert(m);
if (m->sictor || m->sctor || m->sdtor || m->ssharedctor || m->sshareddtor)
{
Symbol *s = m->toSymbol();
//objextern(s);
//if (!s->Sxtrnnum) objextdef(s->Sident);
if (!s->Sxtrnnum)
{
//printf("%s\n", s->Sident);
#if 0 /* This should work, but causes optlink to fail in common/newlib.asm */
objextdef(s->Sident);
#else
Symbol *sref = symbol_generate(SCstatic, type_fake(TYnptr));
sref->Sfl = FLdata;
dtxoff(&sref->Sdt, s, 0, TYnptr);
outdata(sref);
#endif
}
}
}
if (global.params.cov)
{
/* Create coverage identifier:
* private uint[numlines] __coverage;
*/
cov = symbol_calloc("__coverage");
cov->Stype = type_fake(TYint);
cov->Stype->Tmangle = mTYman_c;
cov->Stype->Tcount++;
cov->Sclass = SCstatic;
cov->Sfl = FLdata;
dtnzeros(&cov->Sdt, 4 * numlines);
outdata(cov);
slist_add(cov);
covb = (unsigned *)calloc((numlines + 32) / 32, sizeof(*covb));
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *member = (*members)[i];
//printf("toObjFile %s %s\n", member->kind(), member->toChars());
member->toObjFile(multiobj);
}
if (global.params.cov)
{
/* Generate
* bit[numlines] __bcoverage;
*/
Symbol *bcov = symbol_calloc("__bcoverage");
bcov->Stype = type_fake(TYuint);
bcov->Stype->Tcount++;
bcov->Sclass = SCstatic;
bcov->Sfl = FLdata;
dtnbytes(&bcov->Sdt, (numlines + 32) / 32 * sizeof(*covb), (char *)covb);
outdata(bcov);
free(covb);
covb = NULL;
/* Generate:
* _d_cover_register(uint[] __coverage, BitArray __bcoverage, string filename);
* and prepend it to the static constructor.
*/
/* t will be the type of the functions generated:
* extern (C) void func();
*/
type *t = type_function(TYnfunc, NULL, 0, false, tsvoid);
t->Tmangle = mTYman_c;
sictor = toSymbolX("__modictor", SCglobal, t, "FZv");
cstate.CSpsymtab = &sictor->Sfunc->Flocsym;
localgot = ictorlocalgot;
elem *ecov = el_pair(TYdarray, el_long(TYsize_t, numlines), el_ptr(cov));
elem *ebcov = el_pair(TYdarray, el_long(TYsize_t, numlines), el_ptr(bcov));
if (config.exe == EX_WIN64)
{
ecov = addressElem(ecov, Type::tvoid->arrayOf(), false);
ebcov = addressElem(ebcov, Type::tvoid->arrayOf(), false);
}
elem *e = el_params(
el_long(TYuchar, global.params.covPercent),
ecov,
ebcov,
toEfilename(),
NULL);
e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_DCOVER2]), e);
eictor = el_combine(e, eictor);
ictorlocalgot = localgot;
}
// If coverage / static constructor / destructor / unittest calls
if (eictor || sctors.dim || ectorgates.dim || sdtors.dim ||
ssharedctors.dim || esharedctorgates.dim || sshareddtors.dim || stests.dim)
{
if (eictor)
{
localgot = ictorlocalgot;
block *b = block_calloc();
b->BC = BCret;
b->Belem = eictor;
sictor->Sfunc->Fstartline.Sfilename = arg;
sictor->Sfunc->Fstartblock = b;
writefunc(sictor);
}
sctor = callFuncsAndGates(this, &sctors, &ectorgates, "__modctor");
sdtor = callFuncsAndGates(this, &sdtors, NULL, "__moddtor");
#if DMDV2
ssharedctor = callFuncsAndGates(this, &ssharedctors, (StaticDtorDeclarations *)&esharedctorgates, "__modsharedctor");
sshareddtor = callFuncsAndGates(this, &sshareddtors, NULL, "__modshareddtor");
#endif
stest = callFuncsAndGates(this, &stests, NULL, "__modtest");
if (doppelganger)
genmoduleinfo();
}
if (doppelganger)
{
objmod->termfile();
return;
}
if (global.params.multiobj)
{ /* This is necessary because the main .obj for this module is written
* first, but determining whether marray or massert or munittest are needed is done
* possibly later in the doppelganger modules.
* Another way to fix it is do the main one last.
*/
toModuleAssert();
toModuleUnittest();
toModuleArray();
}
/* Always generate module info, because of templates and -cov.
* But module info needs the runtime library, so disable it for betterC.
*/
if (!global.params.betterC /*|| needModuleInfo()*/)
genmoduleinfo();
// If module assert
for (int i = 0; i < 3; i++)
{
Symbol *ma;
unsigned rt;
unsigned bc;
switch (i)
{
case 0: ma = marray; rt = RTLSYM_DARRAY; bc = BCexit; break;
case 1: ma = massert; rt = RTLSYM_DASSERTM; bc = BCexit; break;
case 2: ma = munittest; rt = RTLSYM_DUNITTESTM; bc = BCret; break;
default: assert(0);
}
if (ma)
{
elem *elinnum;
localgot = NULL;
// Call dassert(filename, line)
// Get sole parameter, linnum
{
Symbol *sp = symbol_calloc("linnum");
sp->Stype = type_fake(TYint);
sp->Stype->Tcount++;
sp->Sclass = (config.exe == EX_WIN64) ? SCshadowreg : SCfastpar;
FuncParamRegs fpr(TYjfunc);
fpr.alloc(sp->Stype, sp->Stype->Tty, &sp->Spreg, &sp->Spreg2);
sp->Sflags &= ~SFLspill;
sp->Sfl = (sp->Sclass == SCshadowreg) ? FLpara : FLfast;
cstate.CSpsymtab = &ma->Sfunc->Flocsym;
symbol_add(sp);
elinnum = el_var(sp);
}
elem *efilename = el_ptr(toSymbol());
elem *e = el_var(rtlsym[rt]);
e = el_bin(OPcall, TYvoid, e, el_param(elinnum, efilename));
block *b = block_calloc();
b->BC = bc;
b->Belem = e;
ma->Sfunc->Fstartline.Sfilename = arg;
ma->Sfunc->Fstartblock = b;
ma->Sclass = SCglobal;
ma->Sfl = 0;
ma->Sflags |= rtlsym[rt]->Sflags & SFLexit;
writefunc(ma);
}
}
objmod->termfile();
}
void ForeachStatement::toIR(IRState *irs)
{
printf("ForeachStatement::toIR() %s\n", toChars());
assert(0); // done by "lowering" in the front end
#if 0
Type *tab;
elem *eaggr;
elem *e;
elem *elength;
tym_t keytym;
//printf("ForeachStatement::toIR()\n");
block *bpre;
block *bcond;
block *bbody;
block *bbodyx;
Blockx *blx = irs->blx;
IRState mystate(irs,this);
mystate.breakBlock = block_calloc(blx);
mystate.contBlock = block_calloc(blx);
tab = aggr->type->toBasetype();
assert(tab->ty == Tarray || tab->ty == Tsarray);
incUsage(irs, aggr->loc);
eaggr = aggr->toElem(irs);
/* Create sp: pointer to start of array data
*/
Symbol *sp = symbol_genauto(TYnptr);
if (tab->ty == Tarray)
{
// stmp is copy of eaggr (the array), so eaggr is evaluated only once
Symbol *stmp;
// Initialize stmp
stmp = symbol_genauto(eaggr);
e = el_bin(OPeq, eaggr->Ety, el_var(stmp), eaggr);
block_appendexp(blx->curblock, e);
// Initialize sp
e = el_una(OPmsw, TYnptr, el_var(stmp));
e = el_bin(OPeq, TYnptr, el_var(sp), e);
block_appendexp(blx->curblock, e);
// Get array.length
elength = el_var(stmp);
elength->Ety = TYsize_t;
}
else // Tsarray
{
// Initialize sp
e = el_una(OPaddr, TYnptr, eaggr);
e = el_bin(OPeq, TYnptr, el_var(sp), e);
block_appendexp(blx->curblock, e);
// Get array.length
elength = el_long(TYsize_t, ((TypeSArray *)tab)->dim->toInteger());
}
Symbol *spmax;
Symbol *skey;
if (key)
{
/* Create skey, the index to the array.
* Initialize skey to 0 (foreach) or .length (foreach_reverse).
*/
skey = key->toSymbol();
symbol_add(skey);
keytym = key->type->totym();
elem *einit = (op == TOKforeach_reverse) ? elength : el_long(keytym, 0);
e = el_bin(OPeq, keytym, el_var(skey), einit);
}
else
{
/* Create spmax, pointer past end of data.
* Initialize spmax = sp + array.length * size
*/
spmax = symbol_genauto(TYnptr);
e = el_bin(OPmul, TYsize_t, elength, el_long(TYsize_t, tab->nextOf()->size()));
e = el_bin(OPadd, TYnptr, el_var(sp), e);
e = el_bin(OPeq, TYnptr, el_var(spmax), e);
/* For foreach_reverse, swap sp and spmax
*/
if (op == TOKforeach_reverse)
{ Symbol *s = sp;
sp = spmax;
spmax = s;
}
}
block_appendexp(blx->curblock, e);
bpre = blx->curblock;
block_next(blx,BCgoto,NULL);
bcond = blx->curblock;
if (key)
{
if (op == TOKforeach_reverse)
{
// Construct (key != 0)
e = el_bin(OPne, TYint, el_var(skey), el_long(keytym, 0));
}
else
{
// Construct (key < elength)
e = el_bin(OPlt, TYint, el_var(skey), elength);
}
}
else
{
if (op == TOKforeach_reverse)
{
// Construct (sp > spmax)
e = el_bin(OPgt, TYint, el_var(sp), el_var(spmax));
}
else
{
// Construct (sp < spmax)
e = el_bin(OPlt, TYint, el_var(sp), el_var(spmax));
}
}
bcond->Belem = e;
block_next(blx, BCiftrue, NULL);
if (op == TOKforeach_reverse)
{
if (key)
{ // Construct (skey -= 1)
e = el_bin(OPminass, keytym, el_var(skey), el_long(keytym, 1));
}
else
{ // Construct (sp--)
e = el_bin(OPminass, TYnptr, el_var(sp), el_long(TYsize_t, tab->nextOf()->size()));
}
block_appendexp(blx->curblock, e);
}
Symbol *s;
FuncDeclaration *fd = NULL;
if (value->toParent2())
fd = value->toParent2()->isFuncDeclaration();
int nrvo = 0;
if (fd && fd->nrvo_can && fd->nrvo_var == value)
{
s = fd->shidden;
nrvo = 1;
}
else
{ s = value->toSymbol();
symbol_add(s);
}
// Construct (value = *sp) or (value = sp[skey * elemsize])
tym_t tym = value->type->totym();
if (key)
{ // sp + skey * elemsize
e = el_bin(OPmul, keytym, el_var(skey), el_long(keytym, tab->nextOf()->size()));
e = el_bin(OPadd, TYnptr, el_var(sp), e);
}
else
e = el_var(sp);
elem *evalue;
#if DMDV2
if (value->offset) // if value is a member of a closure
{
assert(irs->sclosure);
evalue = el_var(irs->sclosure);
evalue = el_bin(OPadd, TYnptr, evalue, el_long(TYint, value->offset));
evalue = el_una(OPind, value->type->totym(), evalue);
}
else
#endif
evalue = el_var(s);
if (value->isOut() || value->isRef())
{
assert(value->storage_class & (STCout | STCref));
e = el_bin(OPeq, TYnptr, evalue, e);
}
else
{
if (nrvo)
evalue = el_una(OPind, tym, evalue);
StructDeclaration *sd = needsPostblit(value->type);
if (tybasic(tym) == TYstruct)
{
e = el_bin(OPeq, tym, evalue, el_una(OPind, tym, e));
e->Eoper = OPstreq;
e->ET = value->type->toCtype();
#if DMDV2
// Call postblit on e
if (sd)
{ FuncDeclaration *fd = sd->postblit;
elem *ec = el_copytree(evalue);
ec = el_una(OPaddr, TYnptr, ec);
ec = callfunc(loc, irs, 1, Type::tvoid, ec, sd->type->pointerTo(), fd, fd->type, NULL, NULL);
e = el_combine(e, ec);
}
#endif
}
else if (tybasic(tym) == TYarray)
{
if (sd)
{
/* Generate:
* _d_arrayctor(ti, efrom, eto)
*/
Expression *ti = value->type->toBasetype()->nextOf()->toBasetype()->getTypeInfo(NULL);
elem *esize = el_long(TYsize_t, ((TypeSArray *)value->type->toBasetype())->dim->toInteger());
elem *eto = el_pair(TYdarray, esize, el_una(OPaddr, TYnptr, evalue));
elem *efrom = el_pair(TYdarray, el_copytree(esize), e);
elem *ep = el_params(eto, efrom, ti->toElem(irs), NULL);
int rtl = RTLSYM_ARRAYCTOR;
e = el_bin(OPcall, TYvoid, el_var(rtlsym[rtl]), ep);
}
else
{
e = el_bin(OPeq, tym, evalue, el_una(OPind, tym, e));
e->Eoper = OPstreq;
e->Ejty = e->Ety = TYstruct;
e->ET = value->type->toCtype();
}
}
else
e = el_bin(OPeq, tym, evalue, el_una(OPind, tym, e));
}
incUsage(irs, loc);
block_appendexp(blx->curblock, e);
bbody = blx->curblock;
if (body)
body->toIR(&mystate);
bbodyx = blx->curblock;
block_next(blx,BCgoto,mystate.contBlock);
if (op == TOKforeach)
{
if (key)
{ // Construct (skey += 1)
e = el_bin(OPaddass, keytym, el_var(skey), el_long(keytym, 1));
}
else
{ // Construct (sp++)
e = el_bin(OPaddass, TYnptr, el_var(sp), el_long(TYsize_t, tab->nextOf()->size()));
}
mystate.contBlock->Belem = e;
}
block_next(blx,BCgoto,mystate.breakBlock);
list_append(&bpre->Bsucc,bcond);
list_append(&bcond->Bsucc,bbody);
list_append(&bcond->Bsucc,mystate.breakBlock);
list_append(&bbodyx->Bsucc,mystate.contBlock);
list_append(&mystate.contBlock->Bsucc,bcond);
#endif
}
void FuncDeclaration::toObjFile(int multiobj)
{
FuncDeclaration *func = this;
ClassDeclaration *cd = func->parent->isClassDeclaration();
int reverse;
int has_arguments;
//printf("FuncDeclaration::toObjFile(%p, %s.%s)\n", func, parent->toChars(), func->toChars());
//if (type) printf("type = %s\n", func->type->toChars());
#if 0
//printf("line = %d\n",func->getWhere() / LINEINC);
EEcontext *ee = env->getEEcontext();
if (ee->EEcompile == 2)
{
if (ee->EElinnum < (func->getWhere() / LINEINC) ||
ee->EElinnum > (func->endwhere / LINEINC)
)
return; // don't compile this function
ee->EEfunc = func->toSymbol();
}
#endif
if (semanticRun >= PASSobj) // if toObjFile() already run
return;
// If errors occurred compiling it, such as bugzilla 6118
if (type && type->ty == Tfunction && ((TypeFunction *)type)->next->ty == Terror)
return;
if (!func->fbody)
{
return;
}
if (func->isUnitTestDeclaration() && !global.params.useUnitTests)
return;
if (multiobj && !isStaticDtorDeclaration() && !isStaticCtorDeclaration())
{ obj_append(this);
return;
}
if (semanticRun == PASSsemanticdone)
{
/* What happened is this function failed semantic3() with errors,
* but the errors were gagged.
* Try to reproduce those errors, and then fail.
*/
error("errors compiling the function");
return;
}
assert(semanticRun == PASSsemantic3done);
semanticRun = PASSobj;
if (global.params.verbose)
printf("function %s\n",func->toPrettyChars());
Symbol *s = func->toSymbol();
func_t *f = s->Sfunc;
// tunnel type of "this" to debug info generation
if (AggregateDeclaration* ad = func->parent->isAggregateDeclaration())
{
::type* t = ad->getType()->toCtype();
if(cd)
t = t->Tnext; // skip reference
f->Fclass = (Classsym *)t;
}
#if TARGET_WINDOS
/* This is done so that the 'this' pointer on the stack is the same
* distance away from the function parameters, so that an overriding
* function can call the nested fdensure or fdrequire of its overridden function
* and the stack offsets are the same.
*/
if (isVirtual() && (fensure || frequire))
f->Fflags3 |= Ffakeeh;
#endif
#if TARGET_OSX
s->Sclass = SCcomdat;
#else
s->Sclass = SCglobal;
#endif
for (Dsymbol *p = parent; p; p = p->parent)
{
if (p->isTemplateInstance())
{
s->Sclass = SCcomdat;
break;
}
}
/* Vector operations should be comdat's
*/
if (isArrayOp)
s->Sclass = SCcomdat;
if (isNested())
{
// if (!(config.flags3 & CFG3pic))
// s->Sclass = SCstatic;
f->Fflags3 |= Fnested;
/* The enclosing function must have its code generated first,
* so we know things like where its local symbols are stored.
*/
FuncDeclaration *fdp = toAliasFunc()->toParent2()->isFuncDeclaration();
// Bug 8016 - only include the function if it is a template instance
Dsymbol * owner = NULL;
if (fdp)
{ owner = fdp->toParent();
while (owner && !owner->isTemplateInstance())
owner = owner->toParent();
}
if (owner && fdp && fdp->semanticRun == PASSsemantic3done &&
!fdp->isUnitTestDeclaration())
{
/* Can't do unittest's out of order, they are order dependent in that their
* execution is done in lexical order, and some modules (std.datetime *cough*
* *cough*) rely on this.
*/
fdp->toObjFile(multiobj);
}
}
else
{
const char *libname = (global.params.symdebug)
? global.params.debuglibname
: global.params.defaultlibname;
// Pull in RTL startup code (but only once)
if (func->isMain() && onlyOneMain(loc))
{
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
objmod->external_def("_main");
objmod->ehsections(); // initialize exception handling sections
#endif
#if TARGET_WINDOS
if (I64)
{
objmod->external_def("main");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("_main");
objmod->external_def("__acrtused_con");
}
#endif
objmod->includelib(libname);
s->Sclass = SCglobal;
}
else if (strcmp(s->Sident, "main") == 0 && linkage == LINKc)
{
#if TARGET_WINDOS
if (I64)
{
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
}
else
{
objmod->external_def("__acrtused_con"); // bring in C startup code
objmod->includelib("snn.lib"); // bring in C runtime library
}
#endif
s->Sclass = SCglobal;
}
#if TARGET_WINDOS
else if (func->isWinMain() && onlyOneMain(loc))
{
if (I64)
{
objmod->includelib("uuid");
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("__acrtused");
}
objmod->includelib(libname);
s->Sclass = SCglobal;
}
// Pull in RTL startup code
else if (func->isDllMain() && onlyOneMain(loc))
{
if (I64)
{
objmod->includelib("uuid");
objmod->includelib("LIBCMT");
objmod->includelib("OLDNAMES");
objmod->ehsections(); // initialize exception handling sections
}
else
{
objmod->external_def("__acrtused_dll");
}
objmod->includelib(libname);
s->Sclass = SCglobal;
}
#endif
}
cstate.CSpsymtab = &f->Flocsym;
// Find module m for this function
Module *m = NULL;
for (Dsymbol *p = parent; p; p = p->parent)
{
m = p->isModule();
if (m)
break;
}
IRState irs(m, func);
Dsymbols deferToObj; // write these to OBJ file later
irs.deferToObj = &deferToObj;
TypeFunction *tf;
enum RET retmethod;
symbol *shidden = NULL;
Symbol *sthis = NULL;
tym_t tyf;
tyf = tybasic(s->Stype->Tty);
//printf("linkage = %d, tyf = x%x\n", linkage, tyf);
reverse = tyrevfunc(s->Stype->Tty);
assert(func->type->ty == Tfunction);
tf = (TypeFunction *)(func->type);
has_arguments = (tf->linkage == LINKd) && (tf->varargs == 1);
retmethod = tf->retStyle();
if (retmethod == RETstack)
{
// If function returns a struct, put a pointer to that
// as the first argument
::type *thidden = tf->next->pointerTo()->toCtype();
char hiddenparam[5+4+1];
static int hiddenparami; // how many we've generated so far
sprintf(hiddenparam,"__HID%d",++hiddenparami);
shidden = symbol_name(hiddenparam,SCparameter,thidden);
shidden->Sflags |= SFLtrue | SFLfree;
#if DMDV1
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedref)
#else
if (func->nrvo_can && func->nrvo_var && func->nrvo_var->nestedrefs.dim)
#endif
type_setcv(&shidden->Stype, shidden->Stype->Tty | mTYvolatile);
irs.shidden = shidden;
this->shidden = shidden;
}
else
{ // Register return style cannot make nrvo.
// Auto functions keep the nrvo_can flag up to here,
// so we should eliminate it before entering backend.
nrvo_can = 0;
}
if (vthis)
{
assert(!vthis->csym);
sthis = vthis->toSymbol();
irs.sthis = sthis;
if (!(f->Fflags3 & Fnested))
f->Fflags3 |= Fmember;
}
// Estimate number of parameters, pi
size_t pi = (v_arguments != NULL);
if (parameters)
pi += parameters->dim;
// Create a temporary buffer, params[], to hold function parameters
Symbol *paramsbuf[10];
Symbol **params = paramsbuf; // allocate on stack if possible
if (pi + 2 > 10) // allow extra 2 for sthis and shidden
{ params = (Symbol **)malloc((pi + 2) * sizeof(Symbol *));
assert(params);
}
// Get the actual number of parameters, pi, and fill in the params[]
pi = 0;
if (v_arguments)
{
params[pi] = v_arguments->toSymbol();
pi += 1;
}
if (parameters)
{
for (size_t i = 0; i < parameters->dim; i++)
{ VarDeclaration *v = (*parameters)[i];
if (v->csym)
{
error("compiler error, parameter '%s', bugzilla 2962?", v->toChars());
assert(0);
}
params[pi + i] = v->toSymbol();
}
pi += parameters->dim;
}
if (reverse)
{ // Reverse params[] entries
for (size_t i = 0; i < pi/2; i++)
{
Symbol *sptmp = params[i];
params[i] = params[pi - 1 - i];
params[pi - 1 - i] = sptmp;
}
}
if (shidden)
{
#if 0
// shidden becomes last parameter
params[pi] = shidden;
#else
// shidden becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = shidden;
#endif
pi++;
}
if (sthis)
{
#if 0
// sthis becomes last parameter
params[pi] = sthis;
#else
// sthis becomes first parameter
memmove(params + 1, params, pi * sizeof(params[0]));
params[0] = sthis;
#endif
pi++;
}
if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) &&
linkage != LINKd && shidden && sthis)
{
/* swap shidden and sthis
*/
Symbol *sp = params[0];
params[0] = params[1];
params[1] = sp;
}
for (size_t i = 0; i < pi; i++)
{ Symbol *sp = params[i];
sp->Sclass = SCparameter;
sp->Sflags &= ~SFLspill;
sp->Sfl = FLpara;
symbol_add(sp);
}
// Determine register assignments
if (pi)
{
FuncParamRegs fpr(tyf);
for (size_t i = 0; i < pi; i++)
{ Symbol *sp = params[i];
if (fpr.alloc(sp->Stype, sp->Stype->Tty, &sp->Spreg, &sp->Spreg2))
{
sp->Sclass = (config.exe == EX_WIN64) ? SCshadowreg : SCfastpar;
sp->Sfl = (sp->Sclass == SCshadowreg) ? FLpara : FLfast;
}
}
}
// Done with params
if (params != paramsbuf)
free(params);
params = NULL;
if (func->fbody)
{
localgot = NULL;
Statement *sbody = func->fbody;
Blockx bx;
memset(&bx,0,sizeof(bx));
bx.startblock = block_calloc();
bx.curblock = bx.startblock;
bx.funcsym = s;
bx.scope_index = -1;
bx.classdec = cd;
bx.member = func;
bx.module = getModule();
irs.blx = &bx;
/* If profiling, insert call to the profiler here.
* _c_trace_pro(char* funcname);
*/
if (global.params.trace)
{
dt_t *dt = NULL;
char *id = s->Sident;
size_t len = strlen(id);
dtnbytes(&dt, len + 1, id);
Symbol *sfuncname = symbol_generate(SCstatic,type_fake(TYchar));
sfuncname->Sdt = dt;
sfuncname->Sfl = FLdata;
out_readonly(sfuncname);
outdata(sfuncname);
elem *efuncname = el_ptr(sfuncname);
elem *eparam = el_params(efuncname, el_long(TYsize_t, len), NULL);
elem *e = el_bin(OPcall, TYvoid, el_var(rtlsym[RTLSYM_TRACE_CPRO]), eparam);
block_appendexp(bx.curblock, e);
}
#if DMDV2
buildClosure(&irs);
#endif
#if TARGET_WINDOS
if (func->isSynchronized() && cd && config.flags2 & CFG2seh &&
!func->isStatic() && !sbody->usesEH())
{
/* The "jmonitor" hack uses an optimized exception handling frame
* which is a little shorter than the more general EH frame.
*/
s->Sfunc->Fflags3 |= Fjmonitor;
}
#endif
sbody->toIR(&irs);
bx.curblock->BC = BCret;
f->Fstartblock = bx.startblock;
// einit = el_combine(einit,bx.init);
if (isCtorDeclaration())
{
assert(sthis);
for (block *b = f->Fstartblock; b; b = b->Bnext)
{
if (b->BC == BCret)
{
b->BC = BCretexp;
b->Belem = el_combine(b->Belem, el_var(sthis));
}
}
}
}
// If static constructor
#if DMDV2
if (isSharedStaticCtorDeclaration()) // must come first because it derives from StaticCtorDeclaration
{
ssharedctors.push(s);
}
else
#endif
if (isStaticCtorDeclaration())
{
sctors.push(s);
}
// If static destructor
#if DMDV2
if (isSharedStaticDtorDeclaration()) // must come first because it derives from StaticDtorDeclaration
{
SharedStaticDtorDeclaration *f = isSharedStaticDtorDeclaration();
assert(f);
if (f->vgate)
{ /* Increment destructor's vgate at construction time
*/
esharedctorgates.push(f);
}
sshareddtors.shift(s);
}
else
#endif
if (isStaticDtorDeclaration())
{
StaticDtorDeclaration *f = isStaticDtorDeclaration();
assert(f);
if (f->vgate)
{ /* Increment destructor's vgate at construction time
*/
ectorgates.push(f);
}
sdtors.shift(s);
}
// If unit test
if (isUnitTestDeclaration())
{
stests.push(s);
}
if (global.errors)
return;
writefunc(s);
if (isExport())
objmod->export_symbol(s, Para.offset);
for (size_t i = 0; i < irs.deferToObj->dim; i++)
{
Dsymbol *s = (*irs.deferToObj)[i];
FuncDeclaration *fd = s->isFuncDeclaration();
if (fd)
{ FuncDeclaration *fdp = fd->toParent2()->isFuncDeclaration();
if (fdp && fdp->semanticRun < PASSobj)
{ /* Bugzilla 7595
* FuncDeclaration::buildClosure() relies on nested functions
* being toObjFile'd after the outer function. Otherwise, the
* v->offset's for the closure variables are wrong.
* So, defer fd until after fdp is done.
*/
fdp->deferred.push(fd);
continue;
}
}
s->toObjFile(0);
}
for (size_t i = 0; i < deferred.dim; i++)
{
FuncDeclaration *fd = deferred[i];
fd->toObjFile(0);
}
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_OPENBSD || TARGET_SOLARIS
// A hack to get a pointer to this function put in the .dtors segment
if (ident && memcmp(ident->toChars(), "_STD", 4) == 0)
objmod->staticdtor(s);
#endif
#if DMDV2
if (irs.startaddress)
{
//printf("Setting start address\n");
objmod->startaddress(irs.startaddress);
}
#endif
}