/**
* Print the static class initialization method.
*/
void JVMWriter::printClInit() {
//out << ".method public <clinit>()V\n";
out << ".method public initialiseEnvironment(Llljvm/runtime/Environment;)V\n";
printSimpleInstruction(".limit stack 5");
printSimpleInstruction(".limit locals 2");
out << "\n\t; load environment into class\n";
printSimpleInstruction("aload_0"); // this.
printSimpleInstruction("aload_1"); // value
printSimpleInstruction("putfield "+classname+"/__env Llljvm/runtime/Environment;");
out << "\n\t; allocate global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printLoadMemoryToStack();
printConstLoad(
APInt(32, targetData->getTypeAllocSize(c->getType()), false));
printSimpleInstruction("invokevirtual",
"lljvm/runtime/Memory/allocateData(I)I");
printSimpleInstruction("aload_0"); // "this"
printSimpleInstruction("swap"); // move this 1 down the stack
printSimpleInstruction("putfield",
classname + "/" + getValueName(g) + " I");
}
}
out << "\n\t; initialise global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printSimpleInstruction("aload_0"); // "this"
printSimpleInstruction("getfield",
classname + "/" + getValueName(g) + " I");
printStaticConstant(c);
printSimpleInstruction("pop");
out << '\n';
}
}
printSimpleInstruction("return");
out << ".end method\n\n";
}
/**
* Print the static class initialization method.
*/
void JVMWriter::printClInit() {
out << ".method public <clinit>()V\n";
printSimpleInstruction(".limit stack 4");
out << "\n\t; allocate global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printConstLoad(
APInt(32, targetData->getTypeAllocSize(c->getType()), false));
printSimpleInstruction("invokestatic",
"lljvm/runtime/Memory/allocateData(I)I");
printSimpleInstruction("putstatic",
classname + "/" + getValueName(g) + " I");
}
}
out << "\n\t; initialise global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printSimpleInstruction("getstatic",
classname + "/" + getValueName(g) + " I");
printStaticConstant(c);
printSimpleInstruction("pop");
out << '\n';
}
}
printSimpleInstruction("return");
out << ".end method\n\n";
}
/**
* Print the class constructor.
*/
void JVMWriter::printConstructor() {
out << "; Constructor\n"
".method public <init>()V\n";
printSimpleInstruction("aload_0");
printSimpleInstruction("invokespecial","java/lang/Object/<init>()V");
printSimpleInstruction("return");
printSimpleInstruction(".limit stack 1");
printSimpleInstruction(".limit locals 1");
out << ".end method\n\n";
out << ".method public initialize(Llljvm/runtime/Context;)V\n";
printSimpleInstruction(".limit stack 12");
printSimpleInstruction(".limit locals 2");
out << "\n;;;START LINKER INITIALIZATIONS;;;\n";
printInitLinkerFields();
out << ";;;END LINKER INITIALIZATIONS;;;\n\n";
out << "\n\t; allocate global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printSimpleInstruction("aload_0");
printStartInvocationTag();
printConstLoad(
APInt(32, targetData->getTypeAllocSize(c->getType()), false));
printEndInvocationTag("lljvm/runtime/Memory/allocateData(I)I");
printSimpleInstruction("putfield",
classname + "/" + getValueName(g) + " I");
}
}
out << "\n\t; initialize global variables\n";
for(Module::global_iterator i = module->global_begin(),
e = module->global_end(); i != e; i++) {
if(!i->isDeclaration()) {
const GlobalVariable *g = i;
const Constant *c = g->getInitializer();
printSimpleInstruction("aload_0");
printSimpleInstruction("getfield",
classname + "/" + getValueName(g) + " I");
printStaticConstant(c);
printSimpleInstruction("pop");
out << '\n';
}
}
out << "\n"
"\treturn\n"
".end method\n\n";
out << ".method public destroy(Llljvm/runtime/Context;)V\n";
printSimpleInstruction("return");
printSimpleInstruction(".limit stack 0");
printSimpleInstruction(".limit locals 2");
out << ".end method\n\n";
}