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glue.c
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glue.c
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/* Compiler implementation of the D programming language
* Copyright (c) 1999-2015 by Digital Mars
* All Rights Reserved
* written by Walter Bright
* http://www.digitalmars.com
* Distributed under the Boost Software License, Version 1.0.
* http://www.boost.org/LICENSE_1_0.txt
* https://github.com/D-Programming-Language/dmd/blob/master/src/glue.c
*/
#include <stdio.h>
#include <stddef.h>
#include <time.h>
#include <assert.h>
#include "mars.h"
#include "module.h"
#include "mtype.h"
#include "declaration.h"
#include "statement.h"
#include "enum.h"
#include "aggregate.h"
#include "init.h"
#include "attrib.h"
#include "id.h"
#include "import.h"
#include "template.h"
#include "lib.h"
#include "target.h"
#include "rmem.h"
#include "cc.h"
#include "global.h"
#include "oper.h"
#include "code.h"
#include "type.h"
#include "dt.h"
#include "cgcv.h"
#include "outbuf.h"
#include "irstate.h"
void clearStringTab();
RET retStyle(TypeFunction *tf);
elem *addressElem(elem *e, Type *t, bool alwaysCopy = false);
void Statement_toIR(Statement *s, IRState *irs);
elem *toEfilename(Module *m);
Symbol *toSymbol(Dsymbol *s);
void buildClosure(FuncDeclaration *fd, IRState *irs);
Symbol *toStringSymbol(const char *str, size_t len, size_t pad);
typedef Array<symbol *> symbols;
Dsymbols *Dsymbols_create();
Expressions *Expressions_create();
type *Type_toCtype(Type *t);
void toObjFile(Dsymbol *ds, bool multiobj);
void genModuleInfo(Module *m);
void genObjFile(Module *m, bool multiobj);
Symbol *toModuleAssert(Module *m);
Symbol *toModuleUnittest(Module *m);
Symbol *toModuleArray(Module *m);
Symbol *toSymbolX(Dsymbol *ds, const char *prefix, int sclass, type *t, const char *suffix);
static void genhelpers(Module *m);
elem *eictor;
symbol *ictorlocalgot;
symbols sctors;
StaticDtorDeclarations ectorgates;
symbols sdtors;
symbols stests;
symbols ssharedctors;
SharedStaticDtorDeclarations esharedctorgates;
symbols sshareddtors;
char *lastmname;
bool onlyOneMain(Loc loc);
/**************************************
* Append s to list of object files to generate later.
*/
Dsymbols obj_symbols_towrite;
void obj_append(Dsymbol *s)
{
//printf("deferred: %s\n", s->toChars());
obj_symbols_towrite.push(s);
}
void obj_write_deferred(Library *library)
{
for (size_t i = 0; i < obj_symbols_towrite.dim; i++)
{
Dsymbol *s = obj_symbols_towrite[i];
Module *m = s->getModule();
char *mname;
if (m)
{
mname = m->srcfile->toChars();
lastmname = mname;
}
else
{
//mname = s->ident->toChars();
mname = lastmname;
assert(mname);
}
obj_start(mname);
static int count;
count++; // sequence for generating names
/* Create a module that's a doppelganger of m, with just
* enough to be able to create the moduleinfo.
*/
OutBuffer idbuf;
idbuf.printf("%s.%d", m ? m->ident->toChars() : mname, count);
char *idstr = idbuf.peekString();
if (!m)
{
// it doesn't make sense to make up a module if we don't know where to put the symbol
// so output it into it's own object file without ModuleInfo
objmod->initfile(idstr, NULL, mname);
toObjFile(s, false);
objmod->termfile();
}
else
{
idbuf.data = NULL;
Identifier *id = Identifier::create(idstr, TOKidentifier);
Module *md = Module::create(mname, id, 0, 0);
md->members = Dsymbols_create();
md->members->push(s); // its only 'member' is s
md->doppelganger = 1; // identify this module as doppelganger
md->md = m->md;
md->aimports.push(m); // it only 'imports' m
md->massert = m->massert;
md->munittest = m->munittest;
md->marray = m->marray;
genObjFile(md, false);
}
/* Set object file name to be source name with sequence number,
* as mangled symbol names get way too long.
*/
const char *fname = FileName::removeExt(mname);
OutBuffer namebuf;
unsigned hash = 0;
for (char *p = s->toChars(); *p; p++)
hash += *p;
namebuf.printf("%s_%x_%x.%s", fname, count, hash, global.obj_ext);
FileName::free((char *)fname);
fname = namebuf.extractString();
//printf("writing '%s'\n", fname);
File *objfile = File::create(fname);
obj_end(library, objfile);
}
obj_symbols_towrite.dim = 0;
}
/***********************************************
* Generate function that calls array of functions and gates.
*/
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_function(TYnfunc, NULL, 0, false, tsvoid);
t->Tmangle = mTYman_c;
}
localgot = NULL;
sctor = toSymbolX(m, 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 = toSymbol(f->vgate);
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;
}
/**************************************
* Prepare for generating obj file.
*/
Outbuffer objbuf;
void obj_start(char *srcfile)
{
//printf("obj_start()\n");
rtlsym_reset();
slist_reset();
clearStringTab();
#if TARGET_WINDOS
// Produce Ms COFF files for 64 bit code, OMF for 32 bit code
assert(objbuf.size() == 0);
objmod = global.params.mscoff ? MsCoffObj::init(&objbuf, srcfile, NULL)
: Obj::init(&objbuf, srcfile, NULL);
#else
objmod = Obj::init(&objbuf, srcfile, NULL);
#endif
el_reset();
cg87_reset();
out_reset();
}
void obj_end(Library *library, File *objfile)
{
const char *objfilename = objfile->name->toChars();
objmod->term(objfilename);
delete objmod;
objmod = NULL;
if (library)
{
// Transfer image to library
library->addObject(objfilename, objbuf.buf, objbuf.p - objbuf.buf);
objbuf.buf = NULL;
}
else
{
// Transfer image to file
objfile->setbuffer(objbuf.buf, objbuf.p - objbuf.buf);
objbuf.buf = NULL;
ensurePathToNameExists(Loc(), objfilename);
//printf("write obj %s\n", objfilename);
writeFile(Loc(), objfile);
}
objbuf.pend = NULL;
objbuf.p = NULL;
objbuf.len = 0;
objbuf.inc = 0;
}
bool obj_includelib(const char *name)
{
return objmod->includelib(name);
}
void obj_startaddress(Symbol *s)
{
return objmod->startaddress(s);
}
/**************************************
* Generate .obj file for Module.
*/
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(getRtlsym(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;
}
/* 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);
/* Always generate helper functions b/c of later templates instantiations
* with different -release/-debug/-boundscheck/-unittest flags.
*/
if (!global.params.betterC)
genhelpers(m);
objmod->termfile();
}
static void genhelpers(Module *m)
{
// If module assert
for (int i = 0; i < 3; i++)
{
Symbol *ma;
unsigned rt;
unsigned bc;
switch (i)
{
case 0: ma = toModuleArray(m); rt = RTLSYM_DARRAY; bc = BCexit; break;
case 1: ma = toModuleAssert(m); rt = RTLSYM_DASSERT; bc = BCexit; break;
case 2: ma = toModuleUnittest(m); rt = RTLSYM_DUNITTEST; bc = BCret; break;
default: assert(0);
}
if (!ma)
continue;
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);
elem *elinnum = el_var(sp);
elem *efilename = toEfilename(m);
if (config.exe == EX_WIN64)
efilename = addressElem(efilename, Type::tstring, true);
elem *e = el_var(getRtlsym(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 = m->arg;
ma->Sfunc->Fstartblock = b;
ma->Sclass = SCglobal;
ma->Sfl = 0;
ma->Sflags |= getRtlsym(rt)->Sflags & SFLexit;
writefunc(ma);
}
}
/**************************************
* Search for a druntime array op
*/
bool isDruntimeArrayOp(Identifier *ident)
{
/* Some of the array op functions are written as library functions,
* presumably to optimize them with special CPU vector instructions.
* List those library functions here, in alpha order.
*/
static const char *libArrayopFuncs[] =
{
"_arrayExpSliceAddass_a",
"_arrayExpSliceAddass_d",
"_arrayExpSliceAddass_f", // T[]+=T
"_arrayExpSliceAddass_g",
"_arrayExpSliceAddass_h",
"_arrayExpSliceAddass_i",
"_arrayExpSliceAddass_k",
"_arrayExpSliceAddass_s",
"_arrayExpSliceAddass_t",
"_arrayExpSliceAddass_u",
"_arrayExpSliceAddass_w",
"_arrayExpSliceDivass_d", // T[]/=T
"_arrayExpSliceDivass_f", // T[]/=T
"_arrayExpSliceMinSliceAssign_a",
"_arrayExpSliceMinSliceAssign_d", // T[]=T-T[]
"_arrayExpSliceMinSliceAssign_f", // T[]=T-T[]
"_arrayExpSliceMinSliceAssign_g",
"_arrayExpSliceMinSliceAssign_h",
"_arrayExpSliceMinSliceAssign_i",
"_arrayExpSliceMinSliceAssign_k",
"_arrayExpSliceMinSliceAssign_s",
"_arrayExpSliceMinSliceAssign_t",
"_arrayExpSliceMinSliceAssign_u",
"_arrayExpSliceMinSliceAssign_w",
"_arrayExpSliceMinass_a",
"_arrayExpSliceMinass_d", // T[]-=T
"_arrayExpSliceMinass_f", // T[]-=T
"_arrayExpSliceMinass_g",
"_arrayExpSliceMinass_h",
"_arrayExpSliceMinass_i",
"_arrayExpSliceMinass_k",
"_arrayExpSliceMinass_s",
"_arrayExpSliceMinass_t",
"_arrayExpSliceMinass_u",
"_arrayExpSliceMinass_w",
"_arrayExpSliceMulass_d", // T[]*=T
"_arrayExpSliceMulass_f", // T[]*=T
"_arrayExpSliceMulass_i",
"_arrayExpSliceMulass_k",
"_arrayExpSliceMulass_s",
"_arrayExpSliceMulass_t",
"_arrayExpSliceMulass_u",
"_arrayExpSliceMulass_w",
"_arraySliceExpAddSliceAssign_a",
"_arraySliceExpAddSliceAssign_d", // T[]=T[]+T
"_arraySliceExpAddSliceAssign_f", // T[]=T[]+T
"_arraySliceExpAddSliceAssign_g",
"_arraySliceExpAddSliceAssign_h",
"_arraySliceExpAddSliceAssign_i",
"_arraySliceExpAddSliceAssign_k",
"_arraySliceExpAddSliceAssign_s",
"_arraySliceExpAddSliceAssign_t",
"_arraySliceExpAddSliceAssign_u",
"_arraySliceExpAddSliceAssign_w",
"_arraySliceExpDivSliceAssign_d", // T[]=T[]/T
"_arraySliceExpDivSliceAssign_f", // T[]=T[]/T
"_arraySliceExpMinSliceAssign_a",
"_arraySliceExpMinSliceAssign_d", // T[]=T[]-T
"_arraySliceExpMinSliceAssign_f", // T[]=T[]-T
"_arraySliceExpMinSliceAssign_g",
"_arraySliceExpMinSliceAssign_h",
"_arraySliceExpMinSliceAssign_i",
"_arraySliceExpMinSliceAssign_k",
"_arraySliceExpMinSliceAssign_s",
"_arraySliceExpMinSliceAssign_t",
"_arraySliceExpMinSliceAssign_u",
"_arraySliceExpMinSliceAssign_w",
"_arraySliceExpMulSliceAddass_d", // T[] += T[]*T
"_arraySliceExpMulSliceAddass_f",
"_arraySliceExpMulSliceAddass_r",
"_arraySliceExpMulSliceAssign_d", // T[]=T[]*T
"_arraySliceExpMulSliceAssign_f", // T[]=T[]*T
"_arraySliceExpMulSliceAssign_i",
"_arraySliceExpMulSliceAssign_k",
"_arraySliceExpMulSliceAssign_s",
"_arraySliceExpMulSliceAssign_t",
"_arraySliceExpMulSliceAssign_u",
"_arraySliceExpMulSliceAssign_w",
"_arraySliceExpMulSliceMinass_d", // T[] -= T[]*T
"_arraySliceExpMulSliceMinass_f",
"_arraySliceExpMulSliceMinass_r",
"_arraySliceSliceAddSliceAssign_a",
"_arraySliceSliceAddSliceAssign_d", // T[]=T[]+T[]
"_arraySliceSliceAddSliceAssign_f", // T[]=T[]+T[]
"_arraySliceSliceAddSliceAssign_g",
"_arraySliceSliceAddSliceAssign_h",
"_arraySliceSliceAddSliceAssign_i",
"_arraySliceSliceAddSliceAssign_k",
"_arraySliceSliceAddSliceAssign_r", // T[]=T[]+T[]
"_arraySliceSliceAddSliceAssign_s",
"_arraySliceSliceAddSliceAssign_t",
"_arraySliceSliceAddSliceAssign_u",
"_arraySliceSliceAddSliceAssign_w",
"_arraySliceSliceAddass_a",
"_arraySliceSliceAddass_d", // T[]+=T[]
"_arraySliceSliceAddass_f", // T[]+=T[]
"_arraySliceSliceAddass_g",
"_arraySliceSliceAddass_h",
"_arraySliceSliceAddass_i",
"_arraySliceSliceAddass_k",
"_arraySliceSliceAddass_s",
"_arraySliceSliceAddass_t",
"_arraySliceSliceAddass_u",
"_arraySliceSliceAddass_w",
"_arraySliceSliceMinSliceAssign_a",
"_arraySliceSliceMinSliceAssign_d", // T[]=T[]-T[]
"_arraySliceSliceMinSliceAssign_f", // T[]=T[]-T[]
"_arraySliceSliceMinSliceAssign_g",
"_arraySliceSliceMinSliceAssign_h",
"_arraySliceSliceMinSliceAssign_i",
"_arraySliceSliceMinSliceAssign_k",
"_arraySliceSliceMinSliceAssign_r", // T[]=T[]-T[]
"_arraySliceSliceMinSliceAssign_s",
"_arraySliceSliceMinSliceAssign_t",
"_arraySliceSliceMinSliceAssign_u",
"_arraySliceSliceMinSliceAssign_w",
"_arraySliceSliceMinass_a",
"_arraySliceSliceMinass_d", // T[]-=T[]
"_arraySliceSliceMinass_f", // T[]-=T[]
"_arraySliceSliceMinass_g",
"_arraySliceSliceMinass_h",
"_arraySliceSliceMinass_i",
"_arraySliceSliceMinass_k",
"_arraySliceSliceMinass_s",
"_arraySliceSliceMinass_t",
"_arraySliceSliceMinass_u",
"_arraySliceSliceMinass_w",
"_arraySliceSliceMulSliceAssign_d", // T[]=T[]*T[]
"_arraySliceSliceMulSliceAssign_f", // T[]=T[]*T[]
"_arraySliceSliceMulSliceAssign_i",
"_arraySliceSliceMulSliceAssign_k",
"_arraySliceSliceMulSliceAssign_s",
"_arraySliceSliceMulSliceAssign_t",
"_arraySliceSliceMulSliceAssign_u",
"_arraySliceSliceMulSliceAssign_w",
"_arraySliceSliceMulass_d", // T[]*=T[]
"_arraySliceSliceMulass_f", // T[]*=T[]
"_arraySliceSliceMulass_i",
"_arraySliceSliceMulass_k",
"_arraySliceSliceMulass_s",
"_arraySliceSliceMulass_t",
"_arraySliceSliceMulass_u",
"_arraySliceSliceMulass_w",
};
char *name = ident->toChars();
int i = binary(name, libArrayopFuncs, sizeof(libArrayopFuncs) / sizeof(char *));
if (i != -1)
return true;
#ifdef DEBUG // Make sure our array is alphabetized
for (i = 0; i < sizeof(libArrayopFuncs) / sizeof(char *); i++)
{
if (strcmp(name, libArrayopFuncs[i]) == 0)
assert(0);
}
#endif
return false;
}
/* ================================================================== */
UnitTestDeclaration *needsDeferredNested(FuncDeclaration *fd)
{
while (fd && fd->isNested())
{
FuncDeclaration *fdp = fd->toParent2()->isFuncDeclaration();
if (!fdp)
break;
if (UnitTestDeclaration *udp = fdp->isUnitTestDeclaration())
return udp->semanticRun < PASSobj ? udp : NULL;
fd = fdp;
}
return NULL;
}
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 (fd->semantic3Errors)
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;
}
if (UnitTestDeclaration *udp = needsDeferredNested(fd))
{
/* Can't do unittest's out of order, they are order dependent in that their
* execution is done in lexical order.
*/
udp->deferredNested.push(fd);
//printf("%s @[%s]\n\t--> pushed to unittest @[%s]\n",
// fd->toPrettyChars(), fd->loc.toChars(), udp->loc.toChars());
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;
}
/* 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;
#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.
*/
FuncDeclaration *fdp = fd->toParent2()->isFuncDeclaration();
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;
AA *labels = NULL;
irs.labels = &labels;
symbol *shidden = NULL;