vegowotenks/jvm
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Implemented Exception Throwing fith specific catchers

Browse source
This commit is contained in:
vegowotenks 2024-11-13 12:14:42 +01:00
parent 796e52241d
commit fc0d11c1e1
8 changed files with 351 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

168
src/native_methods.rs
View file

@ -44,6 +44,24 @@ impl EntryPoint {
struct JavaLangClass {}
impl JavaLangClass {
fn is_array(jvm: &mut JVM) -> Result<JVMCallbackOperation, Error> {
let frame = {
let frame_index = jvm.stack_frames.len() - 1;
&mut jvm.stack_frames[frame_index]
};
let this = frame.load_local_reference(0).unwrap();
let class_class_index = jvm.heap_area.object_area.get_object_class_index(this);
let component_type = jvm.heap_area.object_area.get_object_field(
this,
"componentType",
class_class_index,
&jvm.class_store,
)?;
Ok(JVMCallbackOperation::ReturnFrame(FieldValue::Boolean(component_type.expect_reference() == ObjectReference::NULL)))
}
pub fn get_primitive_class(jvm: &mut JVM) -> Result<JVMCallbackOperation, Error> {
let frame = {
let frame_index = jvm.stack_frames.len() - 1;
@ -330,6 +348,81 @@ impl JavaLangDouble {
}
}
struct JavaLangObject {}
impl JavaLangObject {
fn get_class(jvm: &mut JVM) -> Result<JVMCallbackOperation, Error> {
let frame = {
let frame_index = jvm.stack_frames.len() - 1;
&mut jvm.stack_frames[frame_index]
};
let this = frame.load_local_reference(0).unwrap();
let class_reference = jvm.heap_area.object_area.get_reference_class_ref(this, &jvm.class_store);
Ok(JVMCallbackOperation::ReturnFrame(FieldValue::Reference(class_reference)))
}
fn hashcode(jvm: &mut JVM) -> Result<JVMCallbackOperation, Error> {
let frame = {
let frame_index = jvm.stack_frames.len() - 1;
&mut jvm.stack_frames[frame_index]
};
if frame.operand_stack.capacity() == 1 {
frame.operand_stack.grow(2);
frame.operand_stack.push(StackValue::Int(91)).unwrap();
} else {
let new_hashcode_part = frame.operand_stack.pop_int(0).unwrap();
let old_hashcode_part = frame.operand_stack.pop_int(0).unwrap();
let combined_hashcode = old_hashcode_part.wrapping_mul(37).wrapping_add(new_hashcode_part);
frame.operand_stack.push(StackValue::Int(combined_hashcode)).unwrap();
}
let this = frame.load_local_reference(0).unwrap();
let this_pointer = &this as *const _;
return Ok(JVMCallbackOperation::ReturnFrame(FieldValue::Int(this_pointer as i32)))
//let this_field_count = jvm.heap_area.object_area.get_object_field_count(this);
//Ok(if this_field_count > frame.instruction_pointer as usize {
// let current_field = jvm.heap_area.object_area.get_object_field_at(this, frame.instruction_pointer as usize);
// let caller_frame = match current_field.value {
// FieldValue::Boolean(b) => {
// // TODO: Maybe load the class
// let (boolean_class_file, boolean_class_index) = jvm.class_store.get_class(&String::from("java/lang/Boolean")).unwrap();
// StackFrame::new(
// boolean_class_file,
// boolean_class_index,
// boolean_class_file.resolve_method_index("hashCode", "(Z)I").unwrap(),
// &[StackValue::Boolean(b)]
// )
// },
// FieldValue::Byte(_) => todo!(),
// FieldValue::Char(_) => todo!(),
// FieldValue::Short(_) => todo!(),
// FieldValue::Int(_) => todo!(),
// FieldValue::Float(_) => todo!(),
// FieldValue::Reference(r) => {
// if jvm.heap_area.object_area.is_array_reference(r) {
// } else {
// }
// },
// FieldValue::Double(_) => todo!(),
// FieldValue::Long(_) => todo!(),
// };
// JVMCallbackOperation::PushFrame(caller_frame)
//} else {
// let hashcode = frame.operand_stack.pop_int(0).unwrap();
// JVMCallbackOperation::ReturnFrame(FieldValue::Int(hashcode))
//})
}
}
struct JavaLangRuntime {}
impl JavaLangRuntime {
@ -1136,7 +1229,7 @@ pub fn function_for(class_name: &str, m: &crate::classfile::MethodInfo) -> Resul
argument_types: Box::new([]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Boolean()},
},
todo_call
JavaLangClass::is_array
),
(
@ -1299,7 +1392,7 @@ pub fn function_for(class_name: &str, m: &crate::classfile::MethodInfo) -> Resul
argument_types: Box::new([]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname(String::from("java/lang/Class"))},
},
todo_call
JavaLangObject::get_class
),
(
@ -1309,7 +1402,7 @@ pub fn function_for(class_name: &str, m: &crate::classfile::MethodInfo) -> Resul
argument_types: Box::new([]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Int()},
},
todo_call
JavaLangObject::hashcode
),
(
@ -3435,6 +3528,75 @@ pub fn function_for(class_name: &str, m: &crate::classfile::MethodInfo) -> Resul
},
todo_call
),
(
"java/lang/Module",
"defineModule0",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Boolean()},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"java/lang/Module",
"addReads0",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"java/lang/Module",
"addExports0",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"java/lang/Module",
"addExportsToAll0",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"java/lang/Module",
"addExportsToAllUnnamed0",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Module".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
];
for (classname, methodname, methoddescriptor, binding) in native_mappings {