//Look for symbols in win32 libraries
char *jl_dlfind_win32(const char *f_name)
{
if (jl_dlsym_e(jl_exe_handle, f_name))
return (char*)1;
if (jl_dlsym_e(jl_dl_handle, f_name))
return (char*)2;
if (jl_dlsym_e(jl_kernel32_handle, f_name))
return "kernel32";
if (jl_dlsym_e(jl_ntdll_handle, f_name))
return "ntdll";
if (jl_dlsym_e(jl_crtdll_handle, f_name))
#if _MSC_VER == 1800
return "msvcr120";
#elif defined(_MSC_VER)
#error This version of MSVC has not been tested.
#else
return "msvcrt";
#endif
if (jl_dlsym(jl_winsock_handle, f_name))
return "ws2_32";
// additional common libraries (libc?) could be added here, but in general,
// it is better to specify the library explicitly in the code. This exists
// mainly to ease compatibility with linux, and for libraries that don't
// have a name (julia.exe and libjulia.dll)
// We could also loop over all libraries that have been used so far, but, again,
// explicit is preferred over implicit
return NULL;
// oops, we didn't find it. NULL defaults to searching jl_RTLD_DEFAULT_handle,
// which defaults to jl_dl_handle, where we won't find it, and will throw the
// appropriate error.
}
static void *add_library_sym(char *name, char *lib)
{
void *hnd;
if (lib == NULL) {
hnd = jl_dl_handle;
}
else {
hnd = libMap[lib];
if (hnd == NULL) {
hnd = jl_load_dynamic_library(lib);
if (hnd != NULL)
libMap[lib] = hnd;
else
return NULL;
}
}
// add a symbol->address mapping for the JIT
void *sval = jl_dlsym_e((uv_lib_t*)hnd, name);
if (lib != NULL && hnd != jl_dl_handle) {
void *exist = sys::DynamicLibrary::SearchForAddressOfSymbol(name);
if (exist != NULL && exist != sval &&
// openlibm conflicts with libm, and lots of our libraries
// (including LLVM) link to libm. fortunately AddSymbol() is
// able to resolve these in favor of openlibm, but this could
// be an issue in the future (TODO).
strcmp(lib,"libopenlibm")) {
ios_printf(ios_stderr, "Warning: Possible conflict in library symbol %s\n", name);
}
sys::DynamicLibrary::AddSymbol(name, sval);
}
return sval;
}
void restore_signals(void)
{
// turn on ctrl-c handler
SetConsoleCtrlHandler(NULL, 0);
// see if SetThreadStackGuarantee exists
pSetThreadStackGuarantee = (BOOL (*)(PULONG)) jl_dlsym_e(jl_kernel32_handle, "SetThreadStackGuarantee");
}
JL_DLLEXPORT void *jl_dlsym(void *handle, const char *symbol)
{
void *ptr = jl_dlsym_e(handle, symbol);
if (!ptr)
jl_dlerror("could not load symbol \"%s\":\n%s", symbol);
return ptr;
}
DLLEXPORT int jl_cpu_cores(void)
{
#if defined(HW_AVAILCPU) && defined(HW_NCPU)
size_t len = 4;
int32_t count;
int nm[2] = {CTL_HW, HW_AVAILCPU};
sysctl(nm, 2, &count, &len, NULL, 0);
if (count < 1) {
nm[1] = HW_NCPU;
sysctl(nm, 2, &count, &len, NULL, 0);
if (count < 1) { count = 1; }
}
return count;
#elif defined(_SC_NPROCESSORS_ONLN)
return sysconf(_SC_NPROCESSORS_ONLN);
#elif defined(__WIN32__)
//Try to get WIN7 API method
GAPC gapc = (GAPC) jl_dlsym_e(
jl_kernel32_handle,
"GetActiveProcessorCount"
);
if (gapc) {
return gapc(ALL_PROCESSOR_GROUPS);
}
else { //fall back on GetSystemInfo
SYSTEM_INFO info;
GetSystemInfo(&info);
return info.dwNumberOfProcessors;
}
#else
return 1;
#endif
}
extern "C" DLLEXPORT
void *jl_load_and_lookup(char *f_lib, char *f_name, uv_lib_t **hnd)
{
uv_lib_t *handle = *hnd;
if (!handle)
*hnd = handle = get_library(f_lib);
void *ptr = jl_dlsym_e(handle, f_name);
if (!ptr)
jl_errorf("symbol could not be found %s: %s\n", f_name, uv_dlerror(handle));
return ptr;
}
//Look for symbols in win32 libraries
void *jl_dlsym_win32(char *f_name)
{
void *fptr = jl_dlsym_e(jl_exe_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_dl_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_kernel32_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_ntdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_crtdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym(jl_winsock_handle, f_name);
}
}
}
}
}
return fptr;
}
// ccall(pointer, rettype, (argtypes...), args...)
static Value *emit_ccall(jl_value_t **args, size_t nargs, jl_codectx_t *ctx)
{
JL_NARGSV(ccall, 3);
jl_value_t *ptr=NULL, *rt=NULL, *at=NULL;
Value *jl_ptr=NULL;
JL_GC_PUSH(&ptr, &rt, &at);
ptr = static_eval(args[1], ctx, true);
if (ptr == NULL) {
jl_value_t *ptr_ty = expr_type(args[1], ctx);
Value *arg1 = emit_unboxed(args[1], ctx);
if (!jl_is_cpointer_type(ptr_ty)) {
emit_typecheck(arg1, (jl_value_t*)jl_voidpointer_type,
"ccall: function argument not a pointer or valid constant", ctx);
}
jl_ptr = emit_unbox(T_size, T_psize, arg1);
}
rt = jl_interpret_toplevel_expr_in(ctx->module, args[2],
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
if (jl_is_tuple(rt)) {
std::string msg = "in " + ctx->funcName +
": ccall: missing return type";
jl_error(msg.c_str());
}
at = jl_interpret_toplevel_expr_in(ctx->module, args[3],
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
void *fptr=NULL;
char *f_name=NULL, *f_lib=NULL;
if (ptr != NULL) {
if (jl_is_tuple(ptr) && jl_tuple_len(ptr)==1) {
ptr = jl_tupleref(ptr,0);
}
if (jl_is_symbol(ptr))
f_name = ((jl_sym_t*)ptr)->name;
else if (jl_is_byte_string(ptr))
f_name = jl_string_data(ptr);
if (f_name != NULL) {
// just symbol, default to JuliaDLHandle
#ifdef __WIN32__
fptr = jl_dlsym_e(jl_dl_handle, f_name);
if (!fptr) {
//TODO: when one of these succeeds, store the f_lib name (and clear fptr)
fptr = jl_dlsym_e(jl_kernel32_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_ntdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_crtdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym(jl_winsock_handle, f_name);
}
}
}
}
else {
// available in process symbol table
fptr = NULL;
}
#else
// will look in process symbol table
#endif
}
else if (jl_is_cpointer_type(jl_typeof(ptr))) {
fptr = *(void**)jl_bits_data(ptr);
}
else if (jl_is_tuple(ptr) && jl_tuple_len(ptr)>1) {
jl_value_t *t0 = jl_tupleref(ptr,0);
jl_value_t *t1 = jl_tupleref(ptr,1);
if (jl_is_symbol(t0))
f_name = ((jl_sym_t*)t0)->name;
else if (jl_is_byte_string(t0))
f_name = jl_string_data(t0);
else
JL_TYPECHK(ccall, symbol, t0);
if (jl_is_symbol(t1))
f_lib = ((jl_sym_t*)t1)->name;
else if (jl_is_byte_string(t1))
f_lib = jl_string_data(t1);
else
JL_TYPECHK(ccall, symbol, t1);
}
else {
JL_TYPECHK(ccall, pointer, ptr);
}
}
if (f_name == NULL && fptr == NULL && jl_ptr == NULL) {
JL_GC_POP();
emit_error("ccall: null function pointer", ctx);
return literal_pointer_val(jl_nothing);
}
JL_TYPECHK(ccall, type, rt);
JL_TYPECHK(ccall, tuple, at);
JL_TYPECHK(ccall, type, at);
jl_tuple_t *tt = (jl_tuple_t*)at;
std::vector<Type *> fargt(0);
std::vector<Type *> fargt_sig(0);
Type *lrt = julia_type_to_llvm(rt);
if (lrt == NULL) {
JL_GC_POP();
return literal_pointer_val(jl_nothing);
}
size_t i;
bool haspointers = false;
bool isVa = false;
size_t nargt = jl_tuple_len(tt);
std::vector<AttributeWithIndex> attrs;
for(i=0; i < nargt; i++) {
jl_value_t *tti = jl_tupleref(tt,i);
if (jl_is_seq_type(tti)) {
isVa = true;
tti = jl_tparam0(tti);
}
if (jl_is_bits_type(tti)) {
// see pull req #978. need to annotate signext/zeroext for
// small integer arguments.
jl_bits_type_t *bt = (jl_bits_type_t*)tti;
if (bt->nbits < 32) {
if (jl_signed_type == NULL) {
jl_signed_type = jl_get_global(jl_core_module,jl_symbol("Signed"));
}
#ifdef LLVM32
Attributes::AttrVal av;
if (jl_signed_type && jl_subtype(tti, jl_signed_type, 0))
av = Attributes::SExt;
else
av = Attributes::ZExt;
attrs.push_back(AttributeWithIndex::get(getGlobalContext(), i+1,
ArrayRef<Attributes::AttrVal>(&av, 1)));
#else
Attribute::AttrConst av;
if (jl_signed_type && jl_subtype(tti, jl_signed_type, 0))
av = Attribute::SExt;
else
av = Attribute::ZExt;
attrs.push_back(AttributeWithIndex::get(i+1, av));
#endif
}
}
Type *t = julia_type_to_llvm(tti);
if (t == NULL) {
JL_GC_POP();
return literal_pointer_val(jl_nothing);
}
fargt.push_back(t);
if (!isVa)
fargt_sig.push_back(t);
}
// check for calling convention specifier
CallingConv::ID cc = CallingConv::C;
jl_value_t *last = args[nargs];
if (jl_is_expr(last)) {
jl_sym_t *lhd = ((jl_expr_t*)last)->head;
if (lhd == jl_symbol("stdcall")) {
cc = CallingConv::X86_StdCall;
nargs--;
}
else if (lhd == jl_symbol("cdecl")) {
cc = CallingConv::C;
nargs--;
}
else if (lhd == jl_symbol("fastcall")) {
cc = CallingConv::X86_FastCall;
nargs--;
}
else if (lhd == jl_symbol("thiscall")) {
cc = CallingConv::X86_ThisCall;
nargs--;
}
}
if ((!isVa && jl_tuple_len(tt) != (nargs-2)/2) ||
( isVa && jl_tuple_len(tt)-1 > (nargs-2)/2))
jl_error("ccall: wrong number of arguments to C function");
// some special functions
if (fptr == &jl_array_ptr) {
Value *ary = emit_expr(args[4], ctx);
JL_GC_POP();
return mark_julia_type(builder.CreateBitCast(emit_arrayptr(ary),lrt),
rt);
}
// see if there are & arguments
for(i=4; i < nargs+1; i+=2) {
jl_value_t *argi = args[i];
if (jl_is_expr(argi) && ((jl_expr_t*)argi)->head == amp_sym) {
haspointers = true;
break;
}
}
// make LLVM function object for the target
Value *llvmf;
FunctionType *functype = FunctionType::get(lrt, fargt_sig, isVa);
if (jl_ptr != NULL) {
null_pointer_check(jl_ptr,ctx);
Type *funcptype = PointerType::get(functype,0);
llvmf = builder.CreateIntToPtr(jl_ptr, funcptype);
} else if (fptr != NULL) {
Type *funcptype = PointerType::get(functype,0);
llvmf = literal_pointer_val(fptr, funcptype);
}
else {
void *symaddr;
if (f_lib != NULL)
symaddr = add_library_sym(f_name, f_lib);
else
symaddr = sys::DynamicLibrary::SearchForAddressOfSymbol(f_name);
if (symaddr == NULL) {
JL_GC_POP();
std::stringstream msg;
msg << "ccall: could not find function ";
msg << f_name;
if (f_lib != NULL) {
msg << " in library ";
msg << f_lib;
}
emit_error(msg.str(), ctx);
return literal_pointer_val(jl_nothing);
}
llvmf = jl_Module->getOrInsertFunction(f_name, functype);
}
// save temp argument area stack pointer
Value *saveloc=NULL;
Value *stacksave=NULL;
if (haspointers) {
// TODO: inline this
saveloc = builder.CreateCall(save_arg_area_loc_func);
stacksave =
builder.CreateCall(Intrinsic::getDeclaration(jl_Module,
Intrinsic::stacksave));
}
// emit arguments
Value *argvals[(nargs-3)/2];
int last_depth = ctx->argDepth;
int nargty = jl_tuple_len(tt);
for(i=4; i < nargs+1; i+=2) {
int ai = (i-4)/2;
jl_value_t *argi = args[i];
bool addressOf = false;
if (jl_is_expr(argi) && ((jl_expr_t*)argi)->head == amp_sym) {
addressOf = true;
argi = jl_exprarg(argi,0);
}
Type *largty;
jl_value_t *jargty;
if (isVa && ai >= nargty-1) {
largty = fargt[nargty-1];
jargty = jl_tparam0(jl_tupleref(tt,nargty-1));
}
else {
largty = fargt[ai];
jargty = jl_tupleref(tt,ai);
}
Value *arg;
if (largty == jl_pvalue_llvmt) {
arg = emit_expr(argi, ctx, true);
}
else {
arg = emit_unboxed(argi, ctx);
if (jl_is_bits_type(expr_type(argi, ctx))) {
if (addressOf)
arg = emit_unbox(largty->getContainedType(0), largty, arg);
else
arg = emit_unbox(largty, PointerType::get(largty,0), arg);
}
}
/*
#ifdef JL_GC_MARKSWEEP
// make sure args are rooted
if (largty->isPointerTy() &&
(largty == jl_pvalue_llvmt ||
!jl_is_bits_type(expr_type(args[i], ctx)))) {
make_gcroot(boxed(arg), ctx);
}
#endif
*/
argvals[ai] = julia_to_native(largty, jargty, arg, argi, addressOf,
ai+1, ctx);
}
// the actual call
Value *result = builder.CreateCall(llvmf,
ArrayRef<Value*>(&argvals[0],(nargs-3)/2));
if (cc != CallingConv::C)
((CallInst*)result)->setCallingConv(cc);
#ifdef LLVM32
((CallInst*)result)->setAttributes(AttrListPtr::get(getGlobalContext(), ArrayRef<AttributeWithIndex>(attrs)));
#else
((CallInst*)result)->setAttributes(AttrListPtr::get(attrs.data(),attrs.size()));
#endif
// restore temp argument area stack pointer
if (haspointers) {
assert(saveloc != NULL);
builder.CreateCall(restore_arg_area_loc_func, saveloc);
assert(stacksave != NULL);
builder.CreateCall(Intrinsic::getDeclaration(jl_Module,
Intrinsic::stackrestore),
stacksave);
}
ctx->argDepth = last_depth;
if (0) { // Enable this to turn on SSPREQ (-fstack-protector) on the function containing this ccall
#ifdef LLVM32
ctx->f->addFnAttr(Attributes::StackProtectReq);
#else
ctx->f->addFnAttr(Attribute::StackProtectReq);
#endif
}
JL_GC_POP();
if (lrt == T_void)
return literal_pointer_val((jl_value_t*)jl_nothing);
return mark_julia_type(result, rt);
}
static Value *runtime_sym_lookup(PointerType *funcptype, char *f_lib, char *f_name, jl_codectx_t *ctx)
{
// in pseudo-code, this function emits the following:
// global uv_lib_t **libptrgv
// global void **llvmgv
// if (*llvmgv == NULL) {
// *llvmgv = jl_load_and_lookup(f_lib, f_name, libptrgv);
// }
// return (*llvmgv)
Constant *initnul = ConstantPointerNull::get((PointerType*)T_pint8);
uv_lib_t *libsym = NULL;
bool runtime_lib = false;
GlobalVariable *libptrgv;
#ifdef _OS_WINDOWS_
if ((intptr_t)f_lib == 1) {
libptrgv = prepare_global(jlexe_var);
libsym = jl_exe_handle;
}
else if ((intptr_t)f_lib == 2) {
libptrgv = prepare_global(jldll_var);
libsym = jl_dl_handle;
}
else
#endif
if (f_lib == NULL) {
libptrgv = prepare_global(jlRTLD_DEFAULT_var);
libsym = jl_RTLD_DEFAULT_handle;
}
else {
runtime_lib = true;
libptrgv = libMapGV[f_lib];
if (libptrgv == NULL) {
libptrgv = new GlobalVariable(*jl_Module, T_pint8,
false, GlobalVariable::PrivateLinkage,
initnul, f_lib);
libMapGV[f_lib] = libptrgv;
libsym = get_library(f_lib);
assert(libsym != NULL);
#ifdef USE_MCJIT
llvm_to_jl_value[libptrgv] = libsym;
#else
*((uv_lib_t**)jl_ExecutionEngine->getPointerToGlobal(libptrgv)) = libsym;
#endif
}
}
if (libsym == NULL) {
#ifdef USE_MCJIT
libsym = (uv_lib_t*)llvm_to_jl_value[libptrgv];
#else
libsym = *((uv_lib_t**)jl_ExecutionEngine->getPointerToGlobal(libptrgv));
#endif
}
assert(libsym != NULL);
GlobalVariable *llvmgv = symMapGV[f_name];
if (llvmgv == NULL) {
// MCJIT forces this to have external linkage eventually, so we would clobber
// the symbol of the actual function.
std::string name = f_name;
name = "ccall_" + name;
llvmgv = new GlobalVariable(*jl_Module, T_pint8,
false, GlobalVariable::PrivateLinkage,
initnul, name);
symMapGV[f_name] = llvmgv;
#ifdef USE_MCJIT
llvm_to_jl_value[llvmgv] = jl_dlsym_e(libsym, f_name);
#else
*((void**)jl_ExecutionEngine->getPointerToGlobal(llvmgv)) = jl_dlsym_e(libsym, f_name);
#endif
}
BasicBlock *dlsym_lookup = BasicBlock::Create(getGlobalContext(), "dlsym"),
*ccall_bb = BasicBlock::Create(getGlobalContext(), "ccall");
builder.CreateCondBr(builder.CreateICmpNE(builder.CreateLoad(llvmgv), initnul), ccall_bb, dlsym_lookup);
ctx->f->getBasicBlockList().push_back(dlsym_lookup);
builder.SetInsertPoint(dlsym_lookup);
Value *libname;
if (runtime_lib) {
libname = builder.CreateGlobalStringPtr(f_lib);
}
else {
libname = literal_static_pointer_val(f_lib, T_pint8);
}
Value *llvmf = builder.CreateCall3(prepare_call(jldlsym_func), libname, builder.CreateGlobalStringPtr(f_name), libptrgv);
builder.CreateStore(llvmf, llvmgv);
builder.CreateBr(ccall_bb);
ctx->f->getBasicBlockList().push_back(ccall_bb);
builder.SetInsertPoint(ccall_bb);
llvmf = builder.CreateLoad(llvmgv);
return builder.CreatePointerCast(llvmf,funcptype);
}
// ccall(pointer, rettype, (argtypes...), args...)
static Value *emit_ccall(jl_value_t **args, size_t nargs, jl_codectx_t *ctx)
{
JL_NARGSV(ccall, 3);
jl_value_t *ptr=NULL, *rt=NULL, *at=NULL;
JL_GC_PUSH(&ptr, &rt, &at);
ptr = jl_interpret_toplevel_expr_in(ctx->module, args[1],
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
rt = jl_interpret_toplevel_expr_in(ctx->module, args[2],
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
if (jl_is_tuple(rt)) {
std::string msg = "in " + ctx->funcName +
": ccall: missing return type";
jl_error(msg.c_str());
}
at = jl_interpret_toplevel_expr_in(ctx->module, args[3],
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
void *fptr=NULL;
char *f_name=NULL, *f_lib=NULL;
if (jl_is_tuple(ptr) && jl_tuple_len(ptr)==1) {
ptr = jl_tupleref(ptr,0);
}
if (jl_is_symbol(ptr))
f_name = ((jl_sym_t*)ptr)->name;
else if (jl_is_byte_string(ptr))
f_name = jl_string_data(ptr);
if (f_name != NULL) {
// just symbol, default to JuliaDLHandle
#ifdef __WIN32__
fptr = jl_dlsym_e(jl_dl_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_kernel32_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_ntdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym_e(jl_crtdll_handle, f_name);
if (!fptr) {
fptr = jl_dlsym(jl_winsock_handle, f_name);
}
}
}
}
else {
// available in process symbol table
fptr = NULL;
}
#else
// will look in process symbol table
#endif
}
else if (jl_is_cpointer_type(jl_typeof(ptr))) {
fptr = *(void**)jl_bits_data(ptr);
}
else if (jl_is_tuple(ptr) && jl_tuple_len(ptr)>1) {
jl_value_t *t0 = jl_tupleref(ptr,0);
jl_value_t *t1 = jl_tupleref(ptr,1);
if (jl_is_symbol(t0))
f_name = ((jl_sym_t*)t0)->name;
else if (jl_is_byte_string(t0))
f_name = jl_string_data(t0);
else
JL_TYPECHK(ccall, symbol, t0);
if (jl_is_symbol(t1))
f_lib = ((jl_sym_t*)t1)->name;
else if (jl_is_byte_string(t1))
f_lib = jl_string_data(t1);
else
JL_TYPECHK(ccall, symbol, t1);
}
else {
JL_TYPECHK(ccall, pointer, ptr);
}
if (f_name == NULL && fptr == NULL) {
JL_GC_POP();
emit_error("ccall: null function pointer", ctx);
return literal_pointer_val(jl_nothing);
}
JL_TYPECHK(ccall, type, rt);
JL_TYPECHK(ccall, tuple, at);
JL_TYPECHK(ccall, type, at);
jl_tuple_t *tt = (jl_tuple_t*)at;
std::vector<Type *> fargt(0);
std::vector<Type *> fargt_sig(0);
Type *lrt = julia_type_to_llvm(rt);
if (lrt == NULL) {
JL_GC_POP();
return literal_pointer_val(jl_nothing);
}
size_t i;
bool haspointers = false;
bool isVa = false;
for(i=0; i < jl_tuple_len(tt); i++) {
jl_value_t *tti = jl_tupleref(tt,i);
if (jl_is_seq_type(tti)) {
isVa = true;
tti = jl_tparam0(tti);
}
Type *t = julia_type_to_llvm(tti);
if (t == NULL) {
JL_GC_POP();
return literal_pointer_val(jl_nothing);
}
fargt.push_back(t);
if (!isVa)
fargt_sig.push_back(t);
}
// check for calling convention specifier
CallingConv::ID cc = CallingConv::C;
jl_value_t *last = args[nargs];
if (jl_is_expr(last)) {
jl_sym_t *lhd = ((jl_expr_t*)last)->head;
if (lhd == jl_symbol("stdcall")) {
cc = CallingConv::X86_StdCall;
nargs--;
}
else if (lhd == jl_symbol("cdecl")) {
cc = CallingConv::C;
nargs--;
}
else if (lhd == jl_symbol("fastcall")) {
cc = CallingConv::X86_FastCall;
nargs--;
}
}
if ((!isVa && jl_tuple_len(tt) != (nargs-2)/2) ||
( isVa && jl_tuple_len(tt)-1 > (nargs-2)/2))
jl_error("ccall: wrong number of arguments to C function");
// some special functions
if (fptr == &jl_array_ptr) {
Value *ary = emit_expr(args[4], ctx);
JL_GC_POP();
return mark_julia_type(builder.CreateBitCast(emit_arrayptr(ary),lrt),
rt);
}
// see if there are & arguments
for(i=4; i < nargs+1; i+=2) {
jl_value_t *argi = args[i];
if (jl_is_expr(argi) && ((jl_expr_t*)argi)->head == amp_sym) {
haspointers = true;
break;
}
}
// make LLVM function object for the target
Constant *llvmf;
FunctionType *functype = FunctionType::get(lrt, fargt_sig, isVa);
if (fptr != NULL) {
Type *funcptype = PointerType::get(functype,0);
llvmf = ConstantExpr::getIntToPtr(
ConstantInt::get(funcptype, (uint64_t)fptr),
funcptype);
}
else {
if (f_lib != NULL)
add_library_sym(f_name, f_lib);
llvmf = jl_Module->getOrInsertFunction(f_name, functype);
}
// save temp argument area stack pointer
Value *saveloc=NULL;
Value *stacksave=NULL;
if (haspointers) {
// TODO: inline this
saveloc = builder.CreateCall(save_arg_area_loc_func);
stacksave =
builder.CreateCall(Intrinsic::getDeclaration(jl_Module,
Intrinsic::stacksave));
}
// emit arguments
Value *argvals[(nargs-3)/2];
int last_depth = ctx->argDepth;
int nargty = jl_tuple_len(tt);
for(i=4; i < nargs+1; i+=2) {
int ai = (i-4)/2;
jl_value_t *argi = args[i];
bool addressOf = false;
if (jl_is_expr(argi) && ((jl_expr_t*)argi)->head == amp_sym) {
addressOf = true;
argi = jl_exprarg(argi,0);
}
Type *largty;
jl_value_t *jargty;
if (isVa && ai >= nargty-1) {
largty = fargt[nargty-1];
jargty = jl_tparam0(jl_tupleref(tt,nargty-1));
}
else {
largty = fargt[ai];
jargty = jl_tupleref(tt,ai);
}
Value *arg;
if (largty == jl_pvalue_llvmt) {
arg = emit_expr(argi, ctx, true);
}
else {
arg = emit_unboxed(argi, ctx);
if (jl_is_bits_type(expr_type(argi, ctx))) {
if (addressOf)
arg = emit_unbox(largty->getContainedType(0), largty, arg);
else
arg = emit_unbox(largty, PointerType::get(largty,0), arg);
}
}
/*
#ifdef JL_GC_MARKSWEEP
// make sure args are rooted
if (largty->isPointerTy() &&
(largty == jl_pvalue_llvmt ||
!jl_is_bits_type(expr_type(args[i], ctx)))) {
make_gcroot(boxed(arg), ctx);
}
#endif
*/
argvals[ai] = julia_to_native(largty, jargty, arg, argi, addressOf,
ai+1, ctx);
}
// the actual call
Value *result = builder.CreateCall(llvmf,
ArrayRef<Value*>(&argvals[0],(nargs-3)/2));
if (cc != CallingConv::C)
((CallInst*)result)->setCallingConv(cc);
// restore temp argument area stack pointer
if (haspointers) {
assert(saveloc != NULL);
builder.CreateCall(restore_arg_area_loc_func, saveloc);
assert(stacksave != NULL);
builder.CreateCall(Intrinsic::getDeclaration(jl_Module,
Intrinsic::stackrestore),
stacksave);
}
ctx->argDepth = last_depth;
if (0) { // Enable this to turn on SSPREQ (-fstack-protector) on the function containing this ccall
ctx->f->addFnAttr(Attribute::StackProtectReq);
}
JL_GC_POP();
if (lrt == T_void)
return literal_pointer_val((jl_value_t*)jl_nothing);
return mark_julia_type(result, rt);
}
static Value *runtime_sym_lookup(PointerType *funcptype, char *f_lib, char *f_name, jl_codectx_t *ctx)
{
// in pseudo-code, this function emits the following:
// global uv_lib_t **libptrgv
// global void **llvmgv
// if (*llvmgv == NULL) {
// *llvmgv = jl_load_and_lookup(f_lib, f_name, libptrgv);
// }
// return (*llvmgv)
Constant *initnul = ConstantPointerNull::get((PointerType*)T_pint8);
uv_lib_t *libsym = NULL;
bool runtime_lib = false;
GlobalVariable *libptrgv;
#ifdef _OS_WINDOWS_
if ((intptr_t)f_lib == 1)
libptrgv = jlexe_var;
else if ((intptr_t)f_lib == 2)
libptrgv = jldll_var;
else
#endif
if (f_lib == NULL) {
libptrgv = jlRTLD_DEFAULT_var;
}
else {
runtime_lib = true;
libptrgv = libMapGV[f_lib];
if (libptrgv == NULL) {
libptrgv = new GlobalVariable(*jl_Module, T_pint8,
false, GlobalVariable::PrivateLinkage,
initnul, f_lib);
libMapGV[f_lib] = libptrgv;
libsym = get_library(f_lib);
*((uv_lib_t**)jl_ExecutionEngine->getPointerToGlobal(libptrgv)) = libsym;
}
}
if (libsym == NULL) {
libsym = *((uv_lib_t**)jl_ExecutionEngine->getPointerToGlobal(libptrgv));
}
GlobalVariable *llvmgv = symMapGV[f_name];
if (llvmgv == NULL) {
llvmgv = new GlobalVariable(*jl_Module, T_pint8,
false, GlobalVariable::PrivateLinkage,
initnul, f_name);
symMapGV[f_name] = llvmgv;
*((void**)jl_ExecutionEngine->getPointerToGlobal(llvmgv)) = jl_dlsym_e(libsym, f_name);
}
BasicBlock *dlsym_lookup = BasicBlock::Create(getGlobalContext(), "dlsym"),
*ccall_bb = BasicBlock::Create(getGlobalContext(), "ccall");
builder.CreateCondBr(builder.CreateICmpNE(builder.CreateLoad(llvmgv), initnul), ccall_bb, dlsym_lookup);
ctx->f->getBasicBlockList().push_back(dlsym_lookup);
builder.SetInsertPoint(dlsym_lookup);
Value *libname;
if (runtime_lib) {
libname = builder.CreateGlobalStringPtr(f_lib);
}
else {
libname = literal_static_pointer_val(f_lib, T_pint8);
}
Value *llvmf = builder.CreateCall3(jldlsym_func, libname, builder.CreateGlobalStringPtr(f_name), libptrgv);
builder.CreateStore(llvmf, llvmgv);
builder.CreateBr(ccall_bb);
ctx->f->getBasicBlockList().push_back(ccall_bb);
builder.SetInsertPoint(ccall_bb);
llvmf = builder.CreateLoad(llvmgv);
return builder.CreatePointerCast(llvmf,funcptype);
}
