/**
* Creates the data symbol for a TLS variable for Mach-O.
*
* Input:
* vd the variable declaration for the symbol
* s the regular symbol for the variable
*
* Returns: the newly create symbol
*/
Symbol *createTLVDataSymbol(VarDeclaration *vd, Symbol *s)
{
assert(config.objfmt == OBJ_MACH && I64 && (s->ty() & mTYLINK) == mTYthread);
OutBuffer buffer;
buffer.writestring(s->Sident);
buffer.write("$tlv$init", 9);
const char *tlvInitName = buffer.extractString();
Symbol *tlvInit = symbol_name(tlvInitName, SCstatic, type_fake(vd->type->ty));
tlvInit->Sdt = NULL;
tlvInit->Salignment = type_alignsize(s->Stype);
type_setty(&tlvInit->Stype, tlvInit->Stype->Tty | mTYthreadData);
type_setmangle(&tlvInit->Stype, mangle(vd, tlvInit));
return tlvInit;
}
/**
* Creates the data symbol used to initialize a TLS variable for Mach-O.
*
* Params:
* vd = the variable declaration for the symbol
* s = the back end symbol corresponding to vd
*
* Returns: the newly created symbol
*/
Symbol *createTLVDataSymbol(VarDeclaration *vd, Symbol *s)
{
assert(config.objfmt == OBJ_MACH && I64 && (s->ty() & mTYLINK) == mTYthread);
// Compute identifier for tlv symbol
OutBuffer buffer;
buffer.writestring(s->Sident);
buffer.write("$tlv$init", 9);
const char *tlvInitName = buffer.peekString();
// Compute type for tlv symbol
type *t = type_fake(vd->type->ty);
type_setty(&t, t->Tty | mTYthreadData);
type_setmangle(&t, mangle(vd));
Symbol *tlvInit = symbol_name(tlvInitName, SCstatic, t);
tlvInit->Sdt = NULL;
tlvInit->Salignment = type_alignsize(s->Stype);
if (vd->linkage == LINKcpp)
tlvInit->Sflags |= SFLpublic;
return tlvInit;
}
Symbol *VarDeclaration::toSymbol()
{
//printf("VarDeclaration::toSymbol(%s)\n", toChars());
//if (needThis()) *(char*)0=0;
assert(!needThis());
if (!csym)
{ Symbol *s;
TYPE *t;
const char *id;
mangle_t m = 0;
if (isDataseg())
id = mangle();
else
id = ident->toChars();
s = symbol_calloc(id);
if (storage_class & STCout)
t = type_fake(TYnptr);
else if (isParameter())
t = type->toCParamtype();
else
t = type->toCtype();
t->Tcount++;
if (isDataseg())
{
s->Sclass = SCextern;
s->Sfl = FLextern;
slist_add(s);
}
else
{
s->Sclass = SCauto;
s->Sfl = FLauto;
if (nestedref)
{
/* Symbol is accessed by a nested function. Make sure
* it is not put in a register, and that the optimizer
* assumes it is modified across function calls and pointer
* dereferences.
*/
//printf("\tnested ref, not register\n");
type_setcv(&t, t->Tty | mTYvolatile);
}
}
if (storage_class & STCconst)
{
// Insert const modifiers
tym_t tym = 0;
if (storage_class & STCconst)
tym |= mTYconst;
type_setcv(&t, tym);
}
switch (linkage)
{
case LINKwindows:
m = mTYman_std;
break;
case LINKpascal:
m = mTYman_pas;
break;
case LINKc:
m = mTYman_c;
break;
case LINKd:
m = mTYman_d;
break;
case LINKcpp:
m = mTYman_cpp;
break;
default:
printf("linkage = %d\n", linkage);
assert(0);
}
type_setmangle(&t, m);
s->Stype = t;
csym = s;
}
return csym;
}
Symbol *VarDeclaration::toSymbol()
{
//printf("VarDeclaration::toSymbol(%s)\n", toChars());
//if (needThis()) *(char*)0=0;
assert(!needThis());
if (!csym)
{
TYPE *t;
const char *id;
if (isDataseg())
id = mangle();
else
id = ident->toChars();
Symbol *s = symbol_calloc(id);
s->Salignment = alignment;
if (storage_class & (STCout | STCref))
{
// should be TYref, but problems in back end
t = type_pointer(type->toCtype());
}
else if (storage_class & STClazy)
{
if (config.exe == EX_WIN64 && isParameter())
t = type_fake(TYnptr);
else
t = type_fake(TYdelegate); // Tdelegate as C type
t->Tcount++;
}
else if (isParameter())
{
if (config.exe == EX_WIN64 && type->size(Loc()) > REGSIZE)
{
// should be TYref, but problems in back end
t = type_pointer(type->toCtype());
}
else
{
t = type->toCParamtype();
t->Tcount++;
}
}
else
{
t = type->toCtype();
t->Tcount++;
}
if (isDataseg())
{
if (isThreadlocal())
{ /* Thread local storage
*/
TYPE *ts = t;
ts->Tcount++; // make sure a different t is allocated
type_setty(&t, t->Tty | mTYthread);
ts->Tcount--;
if (global.params.vtls)
{
char *p = loc.toChars();
fprintf(stderr, "%s: %s is thread local\n", p ? p : "", toChars());
if (p)
mem.free(p);
}
}
s->Sclass = SCextern;
s->Sfl = FLextern;
slist_add(s);
/* if it's global or static, then it needs to have a qualified but unmangled name.
* This gives some explanation of the separation in treating name mangling.
* It applies to PDB format, but should apply to CV as PDB derives from CV.
* http://msdn.microsoft.com/en-us/library/ff553493(VS.85).aspx
*/
s->prettyIdent = toPrettyChars();
}
else
{
s->Sclass = SCauto;
s->Sfl = FLauto;
if (nestedrefs.dim)
{
/* Symbol is accessed by a nested function. Make sure
* it is not put in a register, and that the optimizer
* assumes it is modified across function calls and pointer
* dereferences.
*/
//printf("\tnested ref, not register\n");
type_setcv(&t, t->Tty | mTYvolatile);
}
}
if (ident == Id::va_argsave)
/* __va_argsave is set outside of the realm of the optimizer,
* so we tell the optimizer to leave it alone
*/
type_setcv(&t, t->Tty | mTYvolatile);
mangle_t m = 0;
switch (linkage)
{
case LINKwindows:
m = mTYman_std;
break;
case LINKpascal:
m = mTYman_pas;
break;
case LINKc:
m = mTYman_c;
break;
case LINKd:
m = mTYman_d;
break;
case LINKcpp:
{
m = mTYman_cpp;
s->Sflags = SFLpublic;
Dsymbol *parent = toParent();
ClassDeclaration *cd = parent->isClassDeclaration();
if (cd)
{
::type *tc = cd->type->toCtype();
s->Sscope = tc->Tnext->Ttag;
}
StructDeclaration *sd = parent->isStructDeclaration();
if (sd)
{
::type *ts = sd->type->toCtype();
s->Sscope = ts->Ttag;
}
break;
}
default:
printf("linkage = %d\n", linkage);
assert(0);
}
type_setmangle(&t, m);
s->Stype = t;
csym = s;
}
return csym;
}
Symbol *VarDeclaration::toSymbol()
{
//printf("VarDeclaration::toSymbol(%s)\n", toChars());
//if (needThis()) *(char*)0=0;
assert(!needThis());
if (!csym)
{ Symbol *s;
TYPE *t;
const char *id;
if (isDataseg())
id = mangle();
else
id = ident->toChars();
s = symbol_calloc(id);
if (storage_class & (STCout | STCref))
{
if (global.params.symdebug && storage_class & STCparameter)
{
t = type_alloc(TYnptr); // should be TYref, but problems in back end
t->Tnext = type->toCtype();
t->Tnext->Tcount++;
}
else
t = type_fake(TYnptr);
}
else if (storage_class & STClazy)
t = type_fake(TYdelegate); // Tdelegate as C type
else if (isParameter())
t = type->toCParamtype();
else
t = type->toCtype();
t->Tcount++;
if (isDataseg())
{
if (isThreadlocal())
{ /* Thread local storage
*/
TYPE *ts = t;
ts->Tcount++; // make sure a different t is allocated
type_setty(&t, t->Tty | mTYthread);
ts->Tcount--;
if (global.params.vtls)
{
char *p = loc.toChars();
fprintf(stdmsg, "%s: %s is thread local\n", p ? p : "", toChars());
if (p)
mem.free(p);
}
}
s->Sclass = SCextern;
s->Sfl = FLextern;
slist_add(s);
}
else
{
s->Sclass = SCauto;
s->Sfl = FLauto;
if (nestedrefs.dim)
{
/* Symbol is accessed by a nested function. Make sure
* it is not put in a register, and that the optimizer
* assumes it is modified across function calls and pointer
* dereferences.
*/
//printf("\tnested ref, not register\n");
type_setcv(&t, t->Tty | mTYvolatile);
}
}
if (ident == Id::va_argsave)
/* __va_argsave is set outside of the realm of the optimizer,
* so we tell the optimizer to leave it alone
*/
type_setcv(&t, t->Tty | mTYvolatile);
mangle_t m = 0;
switch (linkage)
{
case LINKwindows:
m = mTYman_std;
break;
case LINKpascal:
m = mTYman_pas;
break;
case LINKc:
m = mTYman_c;
break;
case LINKd:
m = mTYman_d;
break;
case LINKcpp:
m = mTYman_cpp;
break;
default:
printf("linkage = %d\n", linkage);
assert(0);
}
type_setmangle(&t, m);
s->Stype = t;
csym = s;
}
return csym;
}
void visit(VarDeclaration *vd)
{
//printf("VarDeclaration::toSymbol(%s)\n", vd->toChars());
assert(!vd->needThis());
if (!vd->csym)
{
const char *id;
if (vd->isDataseg())
id = mangle(vd);
else
id = vd->ident->toChars();
Symbol *s = symbol_calloc(id);
s->Salignment = vd->alignment;
if (vd->storage_class & STCtemp)
s->Sflags |= SFLartifical;
TYPE *t;
if (vd->storage_class & (STCout | STCref))
{
t = type_allocn(TYnref, Type_toCtype(vd->type));
t->Tcount++;
}
else if (vd->storage_class & STClazy)
{
if (config.exe == EX_WIN64 && vd->isParameter())
t = type_fake(TYnptr);
else
t = type_fake(TYdelegate); // Tdelegate as C type
t->Tcount++;
}
else if (vd->isParameter())
{
if (config.exe == EX_WIN64 && vd->type->size(Loc()) > REGSIZE)
{
t = type_allocn(TYnref, Type_toCtype(vd->type));
t->Tcount++;
}
else
{
t = Type_toCtype(vd->type);
t->Tcount++;
}
}
else
{
t = Type_toCtype(vd->type);
t->Tcount++;
}
if (vd->isDataseg())
{
if (vd->isThreadlocal())
{
/* Thread local storage
*/
TYPE *ts = t;
ts->Tcount++; // make sure a different t is allocated
type_setty(&t, t->Tty | mTYthread);
ts->Tcount--;
if (global.params.vtls)
{
char *p = vd->loc.toChars();
fprintf(global.stdmsg, "%s: %s is thread local\n", p ? p : "", vd->toChars());
if (p)
mem.xfree(p);
}
}
s->Sclass = SCextern;
s->Sfl = FLextern;
slist_add(s);
/* if it's global or static, then it needs to have a qualified but unmangled name.
* This gives some explanation of the separation in treating name mangling.
* It applies to PDB format, but should apply to CV as PDB derives from CV.
* http://msdn.microsoft.com/en-us/library/ff553493(VS.85).aspx
*/
s->prettyIdent = vd->toPrettyChars(true);
}
else
{
s->Sclass = SCauto;
s->Sfl = FLauto;
if (vd->nestedrefs.dim)
{
/* Symbol is accessed by a nested function. Make sure
* it is not put in a register, and that the optimizer
* assumes it is modified across function calls and pointer
* dereferences.
*/
//printf("\tnested ref, not register\n");
type_setcv(&t, t->Tty | mTYvolatile);
}
}
if (vd->ident == Id::va_argsave || vd->storage_class & STCvolatile)
{
/* __va_argsave is set outside of the realm of the optimizer,
* so we tell the optimizer to leave it alone
*/
type_setcv(&t, t->Tty | mTYvolatile);
}
mangle_t m = 0;
switch (vd->linkage)
{
case LINKwindows:
m = global.params.is64bit ? mTYman_c : mTYman_std;
break;
case LINKpascal:
m = mTYman_pas;
break;
case LINKc:
m = mTYman_c;
break;
case LINKd:
m = mTYman_d;
break;
case LINKcpp:
s->Sflags |= SFLpublic;
m = mTYman_d;
break;
default:
printf("linkage = %d\n", vd->linkage);
assert(0);
}
type_setmangle(&t, m);
s->Stype = t;
vd->csym = s;
}
result = vd->csym;
}
