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

Int Branching instructions

Browse source
This commit is contained in:
VegOwOtenks 2024-09-10 00:23:53 +02:00
parent 0c54a1d7e1
commit ede316cec3
1 changed files with 21 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
src/jvm.rs
View file

@ -13,7 +13,7 @@ use crate::constantpool::{ ConstantPoolInfo, ConstantClassInfo, ConstantUtf8Info
use crate::heap_area::{ HeapArea, FieldValue, ObjectReference, CompartmentEntry };
use crate::iterators::{ ClassMethodIterator, ClassFieldIterator };
use crate::native_methods;
use crate::native_methods::{ EntryPoint, ignore_call };
use crate::native_methods::EntryPoint;
use crate::native_registry::NativeRegistry;
use crate::stackframe;
use crate::stackframe::{ StackFrame, StackValue, OperandStack };
@ -681,8 +681,8 @@ impl JVM {
}
Instruction::BranchIntEquality(branch_offset) => {
let value_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let value_2 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let value_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
if value_1 == value_2 {
frame.instruction_pointer -= offset as u32;
@ -691,8 +691,8 @@ impl JVM {
}
Instruction::BranchIntInequality(branch_offset) => {
let value_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let value_2 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let value_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
if value_1 != value_2 {
frame.instruction_pointer -= offset as u32;
@ -700,6 +700,16 @@ impl JVM {
}
}
Instruction::BranchIntLessEquals(branch_offset) => {
let value_2 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
let value_1 = wrap_stackframe_error(class, method, frame.operand_stack.pop_int(0))?;
if value_1 <= value_2 {
frame.instruction_pointer -= offset as u32;
frame.instruction_pointer = if branch_offset < 0 { frame.instruction_pointer - branch_offset.abs() as u32} else { frame.instruction_pointer + branch_offset.abs() as u32};
}
}
Instruction::BranchNonNull(branch_offset) => {
let test_value = wrap_stackframe_error(class, method, frame.operand_stack.pop_reference(0))?;
@ -1046,13 +1056,19 @@ impl JVM {
let string_obj_ref = self.heap_area.make_handmade_string(string_constant, &self.class_store);
wrap_stackframe_error(class, method, frame.operand_stack.push(StackValue::Reference(string_obj_ref)))?;
},
}
ConstantPoolInfo::Float(_) => {
// TODO: Handle error instead of unwrap
let float_constant = class.gather_float(index as u16).unwrap();
wrap_stackframe_error(class, method, frame.operand_stack.push(StackValue::Float(float_constant)))?;
},
}
ConstantPoolInfo::Integer(int_data) => {
// TODO: Handle error instead of unwrap
let int_constant = int_data.value;
wrap_stackframe_error(class, method, frame.operand_stack.push(StackValue::Int(int_constant)))?;
}
_ => {
println!("{:?}", class.pool_entry(index as u16).unwrap());
todo!()