fixed parameter bug

src/ast_compound_stmt.cpp

@@ -3,11 +3,15 @@
 
 void CompoundStatement::EmitRISC(std::ostream &stream, Context &context) const
 {
+    context.EnterScope();
+
     // Emit assembler directives.
     if (decls_)
         decls_->EmitRISC(stream, context);
     if (stmts_)
         stmts_->EmitRISC(stream, context);
+
+    context.ExitScope();
 }
 
 void CompoundStatement::Print(std::ostream &stream) const

src/ast_function_definition.cpp

@@ -36,9 +36,9 @@ void FunctionDefinition::EmitRISC(std::ostream &stream, Context &context) const
     stream << "mv s0,sp\n";
 
     // Create the parameter variables
-    Node *paramList = context.functionParameters;
-    if (paramList)
-        paramList->EmitRISC(stream, context);
+    // Node *paramList = context.functionParameters;
+    // if (paramList)
+    //     paramList->EmitRISC(stream, context);
 
     int parameter_nr = 0;
 
@@ -57,13 +57,13 @@ void FunctionDefinition::EmitRISC(std::ostream &stream, Context &context) const
     }
 
     if (!parameterInstances.empty()) {
-        Variable *firstParameter = parameterInstances.front();
+        // Variable *firstParameter = parameterInstances.front();
         Variable *lastParameter = parameterInstances.back();
-        size_t end = lastParameter->offset +
-            context.SizeOfType(lastParameter->type);
-        size_t start = firstParameter->offset;
-        ssize_t alloc = end - start;
-
+        // size_t end = lastParameter->offset +
+        //     context.SizeOfType(lastParameter->type);
+        // size_t start = firstParameter->offset;
+        // ssize_t alloc = end - start;
+        ssize_t alloc = lastParameter->offset;
         stream << "# Allocate space for the parameters\n";
         stream << "addi sp,sp," << alloc << "\n";
     }

test.c

@@ -1,4 +1,4 @@
-int f() {
+int f(int a, int b, int c, int d, int e, int f, int g, int h) {
     int x = 5;
     int y = 3;
     return y;

test.s

@@ -1,23 +1,3 @@
 .text
 .globl f
 f:
-# Allocate space to save s0
-addi sp,sp,-4
-# Save caller's s0
-sw s0,0(sp)
-# Copy stack pointer into frame pointer
-mv s0,sp
-# Load int constant
-li a0, 5
-addi sp,sp,-4
-sw a0,-4(s0)
-# Load int constant
-li a0, 3
-addi sp,sp,-4
-sw a0,-8(s0)
-# Load variable "y"
-lw a0,-8(s0)
-mv sp,s0
-lw s0,(sp)
-addi sp,sp,4
-ret