From 5d520645fd5bfd1a1a8abad1969a7b400ef1a6aa Mon Sep 17 00:00:00 2001
From: Annie <annaslenker@gmail.com>
Date: Sat, 3 May 2025 20:38:12 -0400
Subject: [PATCH] may have function calls, need to merge other stuff to check

---
 src/codegen.c | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/src/codegen.c b/src/codegen.c
index 806972e..79a489c 100644
--- a/src/codegen.c
+++ b/src/codegen.c
@@ -663,19 +663,20 @@ int generateParam(Instruction *inst){
     }
     
     fprintf(cg_flag, "\tmovl\t%d(%%rbp), %%eax\t#adding param start\n", getAddress(op1CG)); 
-    fprintf(cg_flag, "\tmovl\t%%eax, %d(%%rbp)\t#adding param end\n", offset += 8);
+    fprintf(cg_flag, "\tmovl\t%%eax, %d(%%rbp)\t#adding param end\n", getPrimSize(getTypeEntry(tn)));
     return 0;
 }
 
 int generateFunctionStart(Instruction *inst) {
 
-    TNodeOrConst *op1 = getOperand1(inst);
+    TNodeOrConst *op1 = getResult(inst);
         
     if (op1 == NULL) {
         printdebug("%sgenerateFunctionStart failed, NULL operand", COLOR_RED);
         return -1;
     }
- 
+
+    TableNode *funDecTN = getTN(op1);
     if (getTN(op1) == NULL) {
         printdebug("generateFunctionStart failed, NULL tablenode");
         return -1;
@@ -686,6 +687,30 @@ int generateFunctionStart(Instruction *inst) {
     fprintf(cg_flag, "\tpushq\t%%rbp\n");
     fprintf(cg_flag, "\tmovq\t%%rsp, %%rbp\n");
 
-    //now we need to add the CGs of nodes to the CG list by doing assign from the 
+    //now we need to add the CGs of nodes to the CG list by doing assign from the
+    // have function declararation node
+    //declaration ->getType: if record, go through each element and load param from stack and store to correct tn cg
+    //                       if not, go get one element of type of param
+    //declaration ->getType->getDefinitionScope?: go through first n entries to get table nodes for params
+    
+    TableNode *paramTN = getParameter(funDecTN);
+    SymbolTable *st = getFunScope(funDecTN);
+    int paramOffset = -16;
+    if (getAdInfoType(paramTN) != TYPE_RECORD) {
+        CGNode *paramCG = addCG(tn, currentsp);    
+        fprintf(cg_flag, "\tmovl\t%d(%%rbp), %%eax\t#FunctionStart1Param start\n", paramOffset); 
+        fprintf(cg_flag, "\tmovl\t%%eax, %d(%%rbp)\t#FunctionStart1param end\n", getPrimSize(getTypeEntry(paramTN)));
+    } else {
+        int numParams = getRecLength(paramTN);
+        TableNode *tnToAdd = getFirstEntry(st);
+        for (int i = 0; i < numParams; i++) {
+            CGNode *paramCG = addCG(tnTooAdd, currentsp);    
+            fprintf(cg_flag, "\tmovl\t%d(%%rbp), %%eax\t#FunctionStart1Param start\n", paramOffset); 
+            fprintf(cg_flag, "\tmovl\t%%eax, %d(%%rbp)\t#FunctionStart1param end\n", getPrimSize(getTypeEntry(paramTN)));
+            paramoffset -= getPrimSize(getTypeEntry(tnToAdd));
+            tnToAdd = getNextEntry(tnToAdd);
+        }
+    }
+
     return 0;
 }