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Implemented Exception Throwing

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This commit is contained in:
VegOwOtenks 2024-11-12 14:34:42 +01:00
parent f5428c79b2
commit 8e5b6bb2b8
5 changed files with 224 additions and 9 deletions
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2
src/bytecode.rs
View file

@ -102,6 +102,7 @@ impl Bytecode {
0x6D => (Instruction::DivideLong(), 1),
0x6E => (Instruction::DivideFloat(), 1),
0x70 => (Instruction::ModuloInt(), 1),
0x74 => (Instruction::NegateInt(), 1),
0x75 => (Instruction::NegateLong(), 1),
0x78 => (Instruction::ArithmeticShiftIntLeft(), 1),
@ -386,6 +387,7 @@ pub enum Instruction {
DivideLong() = 0x6D, // long division
DivideFloat() = 0x6E, // float division
ModuloInt() = 0x70, // modulo
NegateInt() = 0x74, // arithmetic negation
NegateLong() = 0x75, // arithmetic negation
ArithmeticShiftIntLeft() = 0x78, // shift int left, preserve sign

9
src/classfile.rs
View file

@ -376,6 +376,15 @@ impl JavaClassFile {
return Ok((class_name, method_name, method_descriptor));
}
pub fn gather_methodref_compatible(&self, methodref_index: u16) -> Result<(&String, &String, &String), Error> {
return match self.pool_entry(methodref_index) {
Ok(ConstantPoolInfo::MethodRef(_)) => self.gather_methodref(methodref_index),
Ok(ConstantPoolInfo::InterfaceMethodRef(_)) => self.gather_interfacemethodref(methodref_index),
Err(i) => Err(i),
_ => unreachable!()
}
}
pub fn sourcefile(&self) -> Result<Option<&String>, Error> {
match (&self.attributes).into_iter()
.filter_map(|attribute| match &attribute.data {

18
src/jvm.rs
View file

@ -1403,7 +1403,7 @@ impl JVM {
},
Instruction::InvokeStatic(methodref_index) => {
let (supplied_class_name, supplied_method_name, supplied_descriptor_string) = class.gather_methodref(methodref_index)?;
let (supplied_class_name, supplied_method_name, supplied_descriptor_string) = class.gather_methodref_compatible(methodref_index)?;
if ! self.class_store.have_class(supplied_class_name) {
// rewind the bytecode offset, I'll need to execute this instruction again
@ -1842,6 +1842,15 @@ impl JVM {
wrap_stackframe_error(class, method, frame.operand_stack.push_long(result))?;
}
Instruction::ModuloInt() => {
let int_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let int_2 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let modulo = int_2.wrapping_rem(int_1);
wrap_stackframe_error(class, method, frame.operand_stack.push(StackValue::Int(modulo)))?;
}
Instruction::NegateInt() => {
let int = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let negated = -int;
@ -2020,6 +2029,7 @@ impl JVM {
match expected_field_descriptor.as_str() {
"Z" => FieldValue::Boolean(i != 0),
"B" => FieldValue::Byte(i as i8),
"C" => FieldValue::Char(i as u16),
_ => FieldValue::Int(i)
}
}
@ -2126,7 +2136,7 @@ impl JVM {
_ => return Err(Error::OpcodeError(format!("Found opcode '{:?}' on method returning '{:?}'", instruction, method.descriptor.return_type)))
}
let int = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let int = wrap_stackframe_error(class, method, frame.operand_stack.pop_int_compatible(0))?;
return Ok(JVMCallbackOperation::ReturnFrame(FieldValue::Int(int)));
}
@ -2429,8 +2439,8 @@ fn fill_arguments(class: &JavaClassFile, method: &MethodInfo, arguments: &mut Ve
wrap_stackframe_error(
class,
method,
stack.pop_char(0)
)? as i32
stack.pop_int_compatible(0)
)?
)
)
},

187
src/native_methods.rs
View file

@ -461,6 +461,14 @@ impl JavaLangThrowable {
}
}
struct JdkInternalMiscCDS {}
impl JdkInternalMiscCDS {
fn get_cds_config_status(_jvm: &mut JVM) -> Result<JVMCallbackOperation, Error> {
return Ok(JVMCallbackOperation::ReturnFrame(FieldValue::Int(0)));
}
}
struct JdkInternalMiscUnsafe {}
impl JdkInternalMiscUnsafe {
@ -2949,6 +2957,185 @@ pub fn function_for(class_name: &str, m: &crate::classfile::MethodInfo) -> Resul
},
JavaLangThrowable::fill_in_stacktrace
),
(
"java/lang/invoke/MethodHandle",
"invokeExact",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"invoke",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"invokeBasic",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"linkToVirtual",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"linkToStatic",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"linkToSpecial",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"linkToInterface",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"java/lang/invoke/MethodHandle",
"linkToNative",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 1, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Object".to_string())},
},
todo_call
),
(
"jdk/internal/misc/CDS",
"getCDSConfigStatus",
MethodDescriptor {
argument_types: Box::new([
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Int() },
},
JdkInternalMiscCDS::get_cds_config_status
),
(
"jdk/internal/misc/CDS",
"logLambdaFormInvoker",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"jdk/internal/misc/CDS",
"initializeFromArchive",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/Class".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
ignore_call // TODO: idk
),
(
"jdk/internal/misc/CDS",
"defineArchivedModules",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/ClassLoader".to_string())},
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/ClassLoader".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"jdk/internal/misc/CDS",
"getRandomSeedForDumping",
MethodDescriptor {
argument_types: Box::new([
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Long() },
},
todo_call
),
(
"jdk/internal/misc/CDS",
"dumpClassList",
MethodDescriptor {
argument_types: Box::new([
AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Classname("java/lang/String".to_string())},
]),
return_type: AbstractTypeDescription { array_level: 0, kind: AbstractTypeKind::Void() },
},
todo_call
),
(
"jdk/internal/misc/CDS",
"dumpDynamicArchive",
MethodDescriptor {
argument_types: Box::new([
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 {

17
src/stackframe.rs
View file

@ -8,7 +8,7 @@ pub enum StackValue {
Boolean(bool),
Byte(i8),
Char(u16),
Short(u16),
Short(i16),
Int(i32),
Float(f32),
Reference(ObjectReference),
@ -102,9 +102,15 @@ impl OperandStack {
self.push_long(l)
}
_ => {
println!("{value:?}");
todo!();
FieldValue::Char(c) => {
self.push(StackValue::Char(c))
}
FieldValue::Short(s) => {
self.push(StackValue::Short(s))
}
FieldValue::Double(d) => {
self.push_double(d)
}
}
}
@ -191,7 +197,7 @@ impl OperandStack {
}
}
pub fn pop_short(&mut self, index: usize) -> Result<u16, Error> {
pub fn pop_short(&mut self, index: usize) -> Result<i16, Error> {
let absolute_index = self.depth as usize - 1 - index;
let value = self.stack[absolute_index];
self.depth -= 1;
@ -218,6 +224,7 @@ impl OperandStack {
match value {
StackValue::Int(i) => Ok(i),
StackValue::Byte(b) => Ok(b as i32),
StackValue::Char(c) => Ok(c as i32),
_ => Err(Error::LocalError(format!("Mismatched type at index {} of the function operand stack, expected Int-compatible but found '{:?}'", index, value)))
}
}