From 0f295221cac3cfe507cafa6cbf012c51537ce1c8 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Wed, 1 Nov 2023 20:08:40 +0000
Subject: VM runtime now maintains a heap internally

Now need to create some instructions which manage the heap
---
 vm/main.c    |  4 ++++
 vm/runtime.c | 11 +++++++++++
 vm/runtime.h |  5 ++++-
 3 files changed, 19 insertions(+), 1 deletion(-)

(limited to 'vm')

diff --git a/vm/main.c b/vm/main.c
index 75549fd..cb2c3fb 100644
--- a/vm/main.c
+++ b/vm/main.c
@@ -55,10 +55,14 @@ int main(int argc, char *argv[])
   byte *stack           = calloc(stack_size, 1);
   registers_t registers = {0};
   darr_init(&registers, 8 * WORD_SIZE);
+  heap_t heap = {0};
+  heap_create(&heap);
+
   vm_t vm = {0};
   vm_load_stack(&vm, stack, stack_size);
   vm_load_program(&vm, instructions, number);
   vm_load_registers(&vm, registers);
+  vm_load_heap(&vm, heap);
 
 #if VERBOSE >= 1
   printf("\t[%sVM-SETUP%s]: Loaded stack and program into VM\n", TERM_GREEN,
diff --git a/vm/runtime.c b/vm/runtime.c
index 622228f..0fbea05 100644
--- a/vm/runtime.c
+++ b/vm/runtime.c
@@ -326,11 +326,22 @@ void vm_load_registers(vm_t *vm, registers_t registers)
   vm->registers = registers;
 }
 
+void vm_load_heap(vm_t *vm, heap_t heap)
+{
+  vm->heap = heap;
+}
+
 void vm_stop(vm_t *vm)
 {
   free(vm->registers.data);
   free(vm->program.instructions);
   free(vm->stack.data);
+  heap_stop(&vm->heap);
+
+  vm->registers = (registers_t){0};
+  vm->program   = (struct Program){0};
+  vm->stack     = (struct Stack){0};
+  vm->heap      = (heap_t){0};
 }
 
 void vm_print_registers(vm_t *vm, FILE *fp)
diff --git a/vm/runtime.h b/vm/runtime.h
index 45d467d..6c6042a 100644
--- a/vm/runtime.h
+++ b/vm/runtime.h
@@ -16,6 +16,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include <lib/heap.h>
 #include <lib/inst.h>
 
 typedef enum
@@ -45,6 +46,7 @@ typedef struct
     byte *data;
     word ptr, max;
   } stack;
+  heap_t heap;
   struct Program
   {
     inst_t *instructions;
@@ -56,8 +58,9 @@ err_t vm_execute(vm_t *);
 err_t vm_execute_all(vm_t *);
 
 void vm_load_stack(vm_t *, byte *, size_t);
-void vm_load_program(vm_t *, inst_t *, size_t);
 void vm_load_registers(vm_t *, registers_t);
+void vm_load_heap(vm_t *, heap_t);
+void vm_load_program(vm_t *, inst_t *, size_t);
 void vm_stop(vm_t *);
 
 // Print routines
-- 
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