pr 51

crates/prometeu-bytecode/src/v0/linker.rs

@@ -1,6 +1,5 @@
-use crate::virtual_machine::{ProgramImage, Value};
-use prometeu_bytecode::v0::{BytecodeModule, DebugInfo, ConstantPoolEntry};
-use prometeu_bytecode::opcode::OpCode;
+use crate::v0::{BytecodeModule, DebugInfo, ConstantPoolEntry, FunctionMeta};
+use crate::opcode::OpCode;
 use std::collections::HashMap;
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -11,8 +10,18 @@ pub enum LinkError {
 
 pub struct Linker;
 
+/// Internal representation for linking process
+#[derive(Debug)]
+pub struct LinkedProgram {
+    pub rom: Vec<u8>,
+    pub constant_pool: Vec<ConstantPoolEntry>,
+    pub functions: Vec<FunctionMeta>,
+    pub debug_info: Option<DebugInfo>,
+    pub exports: HashMap<String, u32>,
+}
+
 impl Linker {
-    pub fn link(modules: &[BytecodeModule]) -> Result<ProgramImage, LinkError> {
+    pub fn link(modules: &[BytecodeModule]) -> Result<LinkedProgram, LinkError> {
         let mut combined_code = Vec::new();
         let mut combined_functions = Vec::new();
         let mut combined_constants = Vec::new();
@@ -56,14 +65,7 @@ impl Linker {
 
             // Relocate constant pool entries for this module
             for entry in &module.const_pool {
-                combined_constants.push(match entry {
-                    ConstantPoolEntry::Int32(v) => Value::Int32(*v),
-                    ConstantPoolEntry::Int64(v) => Value::Int64(*v),
-                    ConstantPoolEntry::Float64(v) => Value::Float(*v),
-                    ConstantPoolEntry::Boolean(v) => Value::Boolean(*v),
-                    ConstantPoolEntry::String(v) => Value::String(v.clone()),
-                    ConstantPoolEntry::Null => Value::Null,
-                });
+                combined_constants.push(entry.clone());
             }
 
             // Patch relocations for imports
@@ -143,21 +145,21 @@ impl Linker {
             None
         };
 
-        Ok(ProgramImage::new(
-            combined_code,
-            combined_constants,
-            combined_functions,
+        Ok(LinkedProgram {
+            rom: combined_code,
+            constant_pool: combined_constants,
+            functions: combined_functions,
             debug_info,
             exports,
-        ))
+        })
     }
 }
 
 #[cfg(test)]
 mod tests {
     use super::*;
-    use prometeu_bytecode::v0::{BytecodeModule, FunctionMeta, Export, Import};
-    use prometeu_bytecode::opcode::OpCode;
+    use crate::v0::{BytecodeModule, FunctionMeta, Export, Import};
+    use crate::opcode::OpCode;
 
     #[test]
     fn test_linker_basic() {
@@ -280,8 +282,8 @@ mod tests {
         let result = Linker::link(&[m1, m2]).unwrap();
         
         assert_eq!(result.constant_pool.len(), 2);
-        assert_eq!(result.constant_pool[0], Value::Int32(42));
-        assert_eq!(result.constant_pool[1], Value::Int32(99));
+        assert_eq!(result.constant_pool[0], ConstantPoolEntry::Int32(42));
+        assert_eq!(result.constant_pool[1], ConstantPoolEntry::Int32(99));
 
         // Code for module 1 (starts at 0)
         let idx1 = u32::from_le_bytes(result.rom[2..6].try_into().unwrap());

crates/prometeu-bytecode/src/v0/mod.rs

@@ -1,3 +1,5 @@
+pub mod linker;
+
 use crate::opcode::OpCode;
 use crate::abi::SourceSpan;
 

crates/prometeu-core/src/virtual_machine/mod.rs

@@ -7,7 +7,6 @@ pub mod local_addressing;
 pub mod opcode_spec;
 pub mod bytecode;
 pub mod verifier;
-pub mod linker;
 
 use crate::hardware::HardwareBridge;
 pub use program::ProgramImage;
@@ -16,7 +15,6 @@ pub use value::Value;
 pub use virtual_machine::{BudgetReport, LogicalFrameEndingReason, VirtualMachine};
 pub use prometeu_bytecode::abi::TrapInfo;
 pub use verifier::VerifierError;
-pub use linker::{Linker, LinkError};
 
 pub type SyscallId = u32;
 
@@ -31,7 +29,6 @@ pub enum VmInitError {
     InvalidFormat,
     UnsupportedFormat,
     PbsV0LoadFailed(prometeu_bytecode::v0::LoadError),
-    LinkFailed(LinkError),
     EntrypointNotFound,
     VerificationFailed(VerifierError),
 }

crates/prometeu-core/src/virtual_machine/program.rs

@@ -1,5 +1,5 @@
 use crate::virtual_machine::Value;
-use prometeu_bytecode::v0::{FunctionMeta, DebugInfo};
+use prometeu_bytecode::v0::{FunctionMeta, DebugInfo, BytecodeModule, ConstantPoolEntry};
 use prometeu_bytecode::abi::TrapInfo;
 use std::sync::Arc;
 use std::collections::HashMap;
@@ -63,3 +63,31 @@ impl ProgramImage {
             .map(|(_, name)| name.as_str())
     }
 }
+
+impl From<BytecodeModule> for ProgramImage {
+    fn from(module: BytecodeModule) -> Self {
+        let constant_pool: Vec<Value> = module.const_pool.iter().map(|entry| {
+            match entry {
+                ConstantPoolEntry::Null => Value::Null,
+                ConstantPoolEntry::Int64(v) => Value::Int64(*v),
+                ConstantPoolEntry::Float64(v) => Value::Float(*v),
+                ConstantPoolEntry::Boolean(v) => Value::Boolean(*v),
+                ConstantPoolEntry::String(v) => Value::String(v.clone()),
+                ConstantPoolEntry::Int32(v) => Value::Int32(*v),
+            }
+        }).collect();
+
+        let mut exports = HashMap::new();
+        for export in module.exports {
+            exports.insert(export.symbol, export.func_idx);
+        }
+
+        ProgramImage::new(
+            module.code,
+            constant_pool,
+            module.functions,
+            module.debug_info,
+            exports,
+        )
+    }
+}

crates/prometeu-core/src/virtual_machine/virtual_machine.rs

@@ -125,21 +125,19 @@ impl VirtualMachine {
         let program = if program_bytes.starts_with(b"PBS\0") {
             match prometeu_bytecode::v0::BytecodeLoader::load(&program_bytes) {
                 Ok(module) => {
-                    // Link module(s)
-                    let mut linked_program = crate::virtual_machine::Linker::link(&[module])
-                        .map_err(VmInitError::LinkFailed)?;
-
-                    // Run verifier on the linked program
-                    let max_stacks = crate::virtual_machine::verifier::Verifier::verify(&linked_program.rom, &linked_program.functions)
+                    // Run verifier on the module
+                    let max_stacks = crate::virtual_machine::verifier::Verifier::verify(&module.code, &module.functions)
                         .map_err(VmInitError::VerificationFailed)?;
 
-                    let mut functions = linked_program.functions.as_ref().to_vec();
+                    let mut program = ProgramImage::from(module);
+
+                    let mut functions = program.functions.as_ref().to_vec();
                     for (func, max_stack) in functions.iter_mut().zip(max_stacks) {
                         func.max_stack_slots = max_stack;
                     }
-                    linked_program.functions = std::sync::Arc::from(functions);
+                    program.functions = std::sync::Arc::from(functions);
 
-                    linked_program
+                    program
                 }
                 Err(prometeu_bytecode::v0::LoadError::InvalidVersion) => return Err(VmInitError::UnsupportedFormat),
                 Err(e) => {