char handler(DCCallback* that, DCArgs* input, DCValue* output, void* userdata)
{
const char* signature = (const char*) userdata;
int pos = 0;
char ch;
signature = SignatureSkipCallPrefix(signature);
for(;;) {
ch = *signature++;
if (ch == DC_SIGCHAR_ENDARG) break;
Args[pos].L = 0xDEADC0DECAFEBABELL;
switch(ch) {
case DC_SIGCHAR_BOOL: Args[pos].B = dcbArgBool (input); break;
case DC_SIGCHAR_CHAR: Args[pos].c = dcbArgChar (input); break;
case DC_SIGCHAR_UCHAR: Args[pos].C = dcbArgUChar (input); break;
case DC_SIGCHAR_SHORT: Args[pos].s = dcbArgShort (input); break;
case DC_SIGCHAR_USHORT: Args[pos].S = dcbArgUShort (input); break;
case DC_SIGCHAR_INT: Args[pos].i = dcbArgInt (input); break;
case DC_SIGCHAR_UINT: Args[pos].I = dcbArgUInt (input); break;
case DC_SIGCHAR_LONG: Args[pos].j = dcbArgLong (input); break;
case DC_SIGCHAR_ULONG: Args[pos].J = dcbArgULong (input); break;
case DC_SIGCHAR_LONGLONG: Args[pos].l = dcbArgLongLong (input); break;
case DC_SIGCHAR_ULONGLONG:Args[pos].L = dcbArgULongLong(input); break;
case DC_SIGCHAR_FLOAT: Args[pos].f = dcbArgFloat (input); break;
case DC_SIGCHAR_DOUBLE: Args[pos].d = dcbArgDouble (input); break;
case DC_SIGCHAR_POINTER: Args[pos].p = dcbArgPointer (input); break;
}
++pos;
}
ch = *signature++;
/* currently, no void result is supported by the suite */
GetReferenceResult(output, ch);
switch(ch) {
case DC_SIGCHAR_BOOL: return 'B';
case DC_SIGCHAR_CHAR: return 'c';
case DC_SIGCHAR_UCHAR: return 'C';
case DC_SIGCHAR_SHORT: return 's';
case DC_SIGCHAR_USHORT: return 'S';
case DC_SIGCHAR_INT: return 'i';
case DC_SIGCHAR_UINT: return 'I';
case DC_SIGCHAR_LONG: return 'j';
case DC_SIGCHAR_ULONG: return 'J';
case DC_SIGCHAR_LONGLONG: return 'l';
case DC_SIGCHAR_ULONGLONG:return 'l';
case DC_SIGCHAR_FLOAT: return 'f';
case DC_SIGCHAR_DOUBLE: return 'd';
case DC_SIGCHAR_POINTER: return 'p';
default: assert(0); return 'v';
}
}
static char callback_handler(DCCallback *cb, DCArgs *cb_args, DCValue *cb_result, MVMNativeCallback *data) {
CallbackInvokeData cid;
MVMint32 num_roots, i;
MVMRegister res;
/* Build a callsite and arguments buffer. */
MVMThreadContext *tc = data->tc;
MVMRegister *args = MVM_malloc(data->num_types * sizeof(MVMRegister));
num_roots = 0;
for (i = 1; i < data->num_types; i++) {
MVMObject *type = data->types[i];
MVMint16 typeinfo = data->typeinfos[i];
switch (typeinfo & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_CHAR:
args[i - 1].i64 = dcbArgChar(cb_args);
break;
case MVM_NATIVECALL_ARG_SHORT:
args[i - 1].i64 = dcbArgShort(cb_args);
break;
case MVM_NATIVECALL_ARG_INT:
args[i - 1].i64 = dcbArgInt(cb_args);
break;
case MVM_NATIVECALL_ARG_LONG:
args[i - 1].i64 = dcbArgLong(cb_args);
break;
case MVM_NATIVECALL_ARG_LONGLONG:
args[i - 1].i64 = dcbArgLongLong(cb_args);
break;
case MVM_NATIVECALL_ARG_FLOAT:
args[i - 1].n64 = dcbArgFloat(cb_args);
break;
case MVM_NATIVECALL_ARG_DOUBLE:
args[i - 1].n64 = dcbArgDouble(cb_args);
break;
case MVM_NATIVECALL_ARG_ASCIISTR:
case MVM_NATIVECALL_ARG_UTF8STR:
case MVM_NATIVECALL_ARG_UTF16STR:
args[i - 1].o = MVM_nativecall_make_str(tc, type, typeinfo,
(char *)dcbArgPointer(cb_args));
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
break;
case MVM_NATIVECALL_ARG_CSTRUCT:
args[i - 1].o = MVM_nativecall_make_cstruct(tc, type,
dcbArgPointer(cb_args));
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
break;
case MVM_NATIVECALL_ARG_CPOINTER:
args[i - 1].o = MVM_nativecall_make_cpointer(tc, type,
dcbArgPointer(cb_args));
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
break;
case MVM_NATIVECALL_ARG_CARRAY:
args[i - 1].o = MVM_nativecall_make_carray(tc, type,
dcbArgPointer(cb_args));
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
break;
case MVM_NATIVECALL_ARG_CUNION:
args[i - 1].o = MVM_nativecall_make_cunion(tc, type,
dcbArgPointer(cb_args));
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
break;
case MVM_NATIVECALL_ARG_CALLBACK:
/* TODO: A callback -return- value means that we have a C method
* that needs to be wrapped similarly to a is native(...) Perl 6
* sub. */
dcbArgPointer(cb_args);
args[i - 1].o = type;
MVM_gc_root_temp_push(tc, (MVMCollectable **)&(args[i - 1].o));
num_roots++;
case MVM_NATIVECALL_ARG_UCHAR:
args[i - 1].i64 = dcbArgUChar(cb_args);
break;
case MVM_NATIVECALL_ARG_USHORT:
args[i - 1].i64 = dcbArgUShort(cb_args);
break;
case MVM_NATIVECALL_ARG_UINT:
args[i - 1].i64 = dcbArgUInt(cb_args);
break;
case MVM_NATIVECALL_ARG_ULONG:
args[i - 1].i64 = dcbArgULong(cb_args);
break;
case MVM_NATIVECALL_ARG_ULONGLONG:
args[i - 1].i64 = dcbArgULongLong(cb_args);
break;
default:
MVM_exception_throw_adhoc(tc,
"Internal error: unhandled dyncall callback argument type");
}
}
/* Call into a nested interpreter (since we already are in one). Need to
* save a bunch of state around each side of this. */
cid.invokee = data->target;
cid.args = args;
cid.cs = data->cs;
{
MVMuint8 **backup_interp_cur_op = tc->interp_cur_op;
MVMuint8 **backup_interp_bytecode_start = tc->interp_bytecode_start;
MVMRegister **backup_interp_reg_base = tc->interp_reg_base;
MVMCompUnit **backup_interp_cu = tc->interp_cu;
MVMFrame *backup_cur_frame = tc->cur_frame;
MVMFrame *backup_thread_entry_frame = tc->thread_entry_frame;
MVMuint32 backup_mark = MVM_gc_root_temp_mark(tc);
jmp_buf backup_interp_jump;
memcpy(backup_interp_jump, tc->interp_jump, sizeof(jmp_buf));
tc->cur_frame->return_value = &res;
tc->cur_frame->return_type = MVM_RETURN_OBJ;
MVM_interp_run(tc, &callback_invoke, &cid);
tc->interp_cur_op = backup_interp_cur_op;
tc->interp_bytecode_start = backup_interp_bytecode_start;
tc->interp_reg_base = backup_interp_reg_base;
tc->interp_cu = backup_interp_cu;
tc->cur_frame = backup_cur_frame;
tc->thread_entry_frame = backup_thread_entry_frame;
memcpy(tc->interp_jump, backup_interp_jump, sizeof(jmp_buf));
MVM_gc_root_temp_mark_reset(tc, backup_mark);
}
/* Handle return value. */
if (res.o) {
MVMContainerSpec const *contspec = STABLE(res.o)->container_spec;
if (contspec && contspec->fetch_never_invokes)
contspec->fetch(data->tc, res.o, &res);
}
switch (data->typeinfos[0] & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_VOID:
break;
case MVM_NATIVECALL_ARG_CHAR:
cb_result->c = MVM_nativecall_unmarshal_char(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_SHORT:
cb_result->s = MVM_nativecall_unmarshal_short(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_INT:
cb_result->i = MVM_nativecall_unmarshal_int(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_LONG:
cb_result->j = MVM_nativecall_unmarshal_long(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_LONGLONG:
cb_result->l = MVM_nativecall_unmarshal_longlong(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_FLOAT:
cb_result->f = MVM_nativecall_unmarshal_float(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_DOUBLE:
cb_result->d = MVM_nativecall_unmarshal_double(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_ASCIISTR:
case MVM_NATIVECALL_ARG_UTF8STR:
case MVM_NATIVECALL_ARG_UTF16STR:
cb_result->Z = MVM_nativecall_unmarshal_string(data->tc, res.o, data->typeinfos[0], NULL);
break;
case MVM_NATIVECALL_ARG_CSTRUCT:
cb_result->p = MVM_nativecall_unmarshal_cstruct(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_CPOINTER:
cb_result->p = MVM_nativecall_unmarshal_cpointer(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_CARRAY:
cb_result->p = MVM_nativecall_unmarshal_carray(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_CUNION:
cb_result->p = MVM_nativecall_unmarshal_cunion(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_VMARRAY:
cb_result->p = MVM_nativecall_unmarshal_vmarray(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_CALLBACK:
cb_result->p = unmarshal_callback(data->tc, res.o, data->types[0]);
break;
case MVM_NATIVECALL_ARG_UCHAR:
cb_result->c = MVM_nativecall_unmarshal_uchar(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_USHORT:
cb_result->s = MVM_nativecall_unmarshal_ushort(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_UINT:
cb_result->i = MVM_nativecall_unmarshal_uint(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_ULONG:
cb_result->j = MVM_nativecall_unmarshal_ulong(data->tc, res.o);
break;
case MVM_NATIVECALL_ARG_ULONGLONG:
cb_result->l = MVM_nativecall_unmarshal_ulonglong(data->tc, res.o);
break;
default:
MVM_exception_throw_adhoc(data->tc,
"Internal error: unhandled dyncall callback return type");
}
/* Clean up. */
MVM_gc_root_temp_pop_n(tc, num_roots);
MVM_free(args);
/* Indicate what we're producing as a result. */
return get_signature_char(data->typeinfos[0]);
}
DCpointer dcbArgPointer (DCArgs* p) {
return (DCpointer) dcbArgLong(p);
}
DCulong dcbArgULong (DCArgs* p) {
return (DCulong) dcbArgLong(p);
}
DCbool dcbArgBool (DCArgs* p) {
return (dcbArgLong(p) == 0) ? 0 : 1;
}
DCshort dcbArgShort (DCArgs* p) {
return (DCshort) dcbArgLong(p);
}
DCchar dcbArgChar (DCArgs* p) {
return (DCchar) dcbArgLong(p);
}
DCint dcbArgInt (DCArgs* p) {
return (DCint) dcbArgLong(p);
}
jboolean followArgsGenericJavaCallback(CallTempStruct* call, DCArgs* args, int nTypes, ValueType* pTypes)
{
JNIEnv* env = call->env;
int iParam;
jobjectArray arr = (*env)->NewObjectArray(env, nTypes, gObjectClass, NULL);
for (iParam = 0; iParam < nTypes; iParam++) {
ValueType type = pTypes[iParam];
jobject arg = NULL;
switch (type) {
case eIntFlagSet:
arg = BoxInt(env, (jint)getFlagValue(env, (jobject)dcbArgPointer(args)));
break;
case eIntValue:
arg = BoxInt(env, dcbArgInt(args));
break;
case eCLongValue: {
jlong v;
if (sizeof(long) == 4)
v = dcbArgLong(args);
else
v = dcbArgLongLong(args);
arg = BoxCLong(env, v);
break;
}
case eSizeTValue: {
jlong v;
if (sizeof(size_t) == 4)
v = dcbArgInt(args);
else
v = dcbArgLongLong(args);
arg = BoxSizeT(env, v);
break;
}
case eLongValue:
arg = BoxLong(env, dcbArgLongLong(args));
break;
case eShortValue:
arg = BoxShort(env, dcbArgShort(args));
break;
case eBooleanValue:
case eByteValue:
arg = BoxByte(env, dcbArgChar(args));
break;
case eFloatValue:
arg = BoxFloat(env, dcbArgFloat(args));
break;
case eDoubleValue:
arg = BoxDouble(env, dcbArgDouble(args));
break;
case ePointerValue:
{
jobject callIO = call && call->pCallIOs ? *(call->pCallIOs++) : NULL;
void* ptr = dcbArgPointer(args);
arg = createPointerFromIO(env, ptr, callIO);
}
break;
case eWCharValue:
switch (sizeof(wchar_t)) {
case 1:
arg = BoxChar(env, dcbArgChar(args));
break;
case 2:
arg = BoxChar(env, dcbArgShort(args));
break;
case 4:
arg = BoxInt(env, dcbArgInt(args));
break;
default:
throwException(env, "Invalid wchar_t size for argument !");
return JNI_FALSE;
}
break;
default:
throwException(env, "Invalid argument value type !");
return JNI_FALSE;
}
(*env)->SetObjectArrayElement(env, arr, iParam, arg);
}
dcArgPointer(call->vm, arr);
if ((*env)->ExceptionCheck(env))
return JNI_FALSE;
return JNI_TRUE;
}
