1 files changed, 49 insertions, 1 deletions

diff --git a/main.c b/main.c
index 2a38dde..a136a40 100644
--- a/main.c
+++ b/main.c
@@ -14,10 +14,58 @@
  * Description: Entrypoint
  */
 
+#include <malloc.h>
+#include <stdint.h>
 #include <stdio.h>
+#include <string.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int8_t i8;
+typedef int16_t i16;
+typedef int32_t i32;
+typedef int64_t i64;
+
+typedef struct
+{
+  u8 *buffer;
+  u64 size_memory, size_stack, size_registers;
+} vm_t;
+
+#define VM_DEFAULT_MEM_SIZE       (1024)
+#define VM_DEFAULT_STACK_SIZE     (128 * sizeof(u64))
+#define VM_DEFAULT_REGISTERS_SIZE (8 * sizeof(u64))
+
+#define VM_STACK(VM)     ((VM)->buffer + (VM)->size_memory + (VM)->size_registers)
+#define VM_REGISTERS(VM) ((u64 *)((VM)->buffer + (VM)->size_memory))
+#define VM_IP(VM)        (VM_REGISTERS(VM)[0])
+#define VM_SP(VM)        (VM_REGISTERS(VM)[1])
+
+void vm_init_malloc(vm_t *vm)
+{
+  if (vm->size_stack == 0)
+    vm->size_stack = VM_DEFAULT_STACK_SIZE;
+  if (vm->size_registers == 0)
+    vm->size_registers = VM_DEFAULT_REGISTERS_SIZE;
+  if (vm->size_memory == 0)
+    vm->size_memory = VM_DEFAULT_MEM_SIZE;
+
+  vm->buffer = calloc(1, vm->size_memory + vm->size_stack + vm->size_registers);
+}
+
+void vm_stop(vm_t *vm)
+{
+  free(vm->buffer);
+  memset(vm, 0, sizeof(*vm));
+}
 
 int main(void)
 {
-  puts("Hello, world!");
+  vm_t vm = {0};
+  vm_init_malloc(&vm);
+  vm_stop(&vm);
   return 0;
 }