From 45ab81525a9d2409382e643c620f54a15c335244 Mon Sep 17 00:00:00 2001
From: Andrew Binstock <920630+platypusguy@users.noreply.github.com>
Date: Sat, 26 Aug 2023 09:18:37 -0700
Subject: [PATCH] JACOBIN-340 Finalizing logic for static initializer blocks

---
 src/jvm/instantiate.go | 79 +++++++++++++++++++++++-------------------
 1 file changed, 43 insertions(+), 36 deletions(-)

diff --git a/src/jvm/instantiate.go b/src/jvm/instantiate.go
index c6bfc1ff..d0bb5b3a 100644
--- a/src/jvm/instantiate.go
+++ b/src/jvm/instantiate.go
@@ -10,6 +10,11 @@ import (
 	"errors"
 	"fmt"
 	"jacobin/classloader"
+	"jacobin/frames"
+	"jacobin/globals"
+	"jacobin/thread"
+	"strconv"
+
 	// "jacobin/frames"
 	// "jacobin/globals"
 	"jacobin/log"
@@ -232,44 +237,46 @@ func runInitializationBlock(k *classloader.Klass, idx int) error {
 	return nil
 }
 
-func runJavaInitializer(meth classloader.MData, k *classloader.Klass) error {
-	// f := frames.CreateFrame(meth.MaxStack) // create a new frame
-	// f.MethName = "<clinit>"
-	// f.ClName = className
-	// f.CP = m.Cp                        // add its pointer to the class CP
-	// for i := 0; i < len(m.Code); i++ { // copy the bytecodes over
-	// 	f.Meth = append(f.Meth, m.Code[i])
-	// }
-	//
-	// // allocate the local variables
-	// for j := 0; j < m.MaxLocals; j++ {
-	// 	f.Locals = append(f.Locals, 0)
-	// }
-	//
-	// // create the first thread and place its first frame on it
-	// glob := globals.GetGlobalRef()
-	// clInitThread := thread.CreateThread()
-	// clInitThread.Stack = frames.CreateFrameStack()
-	// clInitThread.ID = thread.AddThreadToTable(&clInitThread, &glob.Threads)
-	//
-	// clInitThread.Trace = MainThread.Trace
-	// f.Thread = clInitThread.ID
-	//
-	// if frames.PushFrame(clInitThread.Stack, f) != nil {
-	// 	_ = log.Log("Memory exceptions allocating frame on thread: "+strconv.Itoa(clInitThread.ID),
-	// 		log.SEVERE)
-	// 	return errors.New("outOfMemory Exception")
-	// }
-	//
-	// if clInitThread.Trace {
-	// 	traceInfo := fmt.Sprintf("StartExec: f.MethName=%s, m.MaxStack=%d, m.MaxLocals=%d, len(m.Code)=%d",
-	// 		f.MethName, m.MaxStack, m.MaxLocals, len(m.Code))
-	// 	_ = log.Log(traceInfo, log.TRACE_INST)
-	// }
-	//
-	// err = runThread(&clInitThread)
+func runJavaInitializer(m classloader.MData, k *classloader.Klass) error {
+	meth := m.(classloader.JmEntry)
+	f := frames.CreateFrame(meth.MaxStack) // create a new frame
+	f.MethName = "<clinit>"
+	f.ClName = k.Data.Name
+	f.CP = meth.Cp                        // add its pointer to the class CP
+	for i := 0; i < len(meth.Code); i++ { // copy the bytecodes over
+		f.Meth = append(f.Meth, meth.Code[i])
+	}
+
+	// allocate the local variables
+	for j := 0; j < meth.MaxLocals; j++ {
+		f.Locals = append(f.Locals, 0)
+	}
+
+	// create the first thread and place its first frame on it
+	glob := globals.GetGlobalRef()
+	clInitThread := thread.CreateThread()
+	clInitThread.Stack = frames.CreateFrameStack()
+	clInitThread.ID = thread.AddThreadToTable(&clInitThread, &glob.Threads)
+
+	clInitThread.Trace = MainThread.Trace
+	f.Thread = clInitThread.ID
+
+	if frames.PushFrame(clInitThread.Stack, f) != nil {
+		_ = log.Log("Memory exceptions allocating frame on thread: "+strconv.Itoa(clInitThread.ID),
+			log.SEVERE)
+		return errors.New("outOfMemory Exception")
+	}
+
+	if clInitThread.Trace {
+		traceInfo := fmt.Sprintf("StartExec: f.MethName=%s, m.MaxStack=%d, m.MaxLocals=%d, len(m.Code)=%d",
+			f.MethName, meth.MaxStack, meth.MaxLocals, len(meth.Code))
+		_ = log.Log(traceInfo, log.TRACE_INST)
+	}
+
+	// err := runThread(&clInitThread)
 	// if err != nil {
 	// 	return err
+	// }
 	return nil
 }