ps5: generate_expression

ps5/src/emit.h

@@ -29,6 +29,7 @@
 #define EMIT(fmt, ...) printf("\t" fmt "\n" __VA_OPT__(, ) __VA_ARGS__)
 
 #define MOVQ(src, dst) EMIT("movq %s, %s", (src), (dst))
+#define MOVQ_IMM(imm, dst) EMIT("movq $%ld, %s", (int64_t)(imm), (dst))
 #define PUSHQ(src) EMIT("pushq %s", (src))
 #define POPQ(src) EMIT("popq %s", (src))
 

ps5/src/generator.c

@@ -1,3 +1,4 @@
+#include "symbol_table.h"
 #include "vslc.h"
 
 // This header defines a bunch of macros we can use to emit assembly to stdout
@@ -168,9 +169,12 @@ static void generate_expression(node_t* expression)
   // (The candidates are NUMBER_LITERAL, IDENTIFIER, ARRAY_INDEXING, OPERATOR and FUNCTION_CALL)
   switch (expression->type) {
   case NUMBER_LITERAL:
-
+    MOVQ_IMM(expression->data.number_literal, RAX);
     break;
   case IDENTIFIER:
+    symbol_t *sym = expression->symbol;
+    symbol_t *value = symbol_hashmap_lookup(sym->function_symtable->hashmap, sym->name);
+    MOVQ_IMM(value->node->data.number_literal, RAX);
     break;
   case ARRAY_INDEXING:
     break;