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Changed stack data to be a pointer

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I wouldn't really want this to be malloc'd per se, you could make a
byte array on the stack then pass it into the VM?
This commit is contained in:
Aryadev Chavali
2023-10-15 05:39:19 +01:00
parent a8747faa08
commit 2de37b20e2
1 changed files with 5 additions and 7 deletions
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12
src/main.c
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@@ -15,20 +15,18 @@
#include "./base.h"
#define VM_STACK_MAX 1024
typedef struct
{
struct Stack
{
byte data[VM_STACK_MAX];
word ptr;
byte *data;
word ptr, size;
} stack;
} vm_t;
void vm_push_byte(vm_t *vm, data_t b)
{
if (vm->stack.ptr >= VM_STACK_MAX)
if (vm->stack.ptr >= vm->stack.size)
// TODO: Error STACK_OVERFLOW
return;
vm->stack.data[vm->stack.ptr++] = b.as_byte;
@@ -36,7 +34,7 @@ void vm_push_byte(vm_t *vm, data_t b)
void vm_push_word(vm_t *vm, data_t w)
{
if (vm->stack.ptr + WORD_SIZE >= VM_STACK_MAX)
if (vm->stack.ptr + WORD_SIZE >= vm->stack.size)
// TODO: Error STACK_OVERFLOW
return;
// By default store in big endian
@@ -51,7 +49,7 @@ void vm_push_word(vm_t *vm, data_t w)
void vm_push_float(vm_t *vm, data_t f)
{
if (vm->stack.ptr + FLOAT_SIZE >= VM_STACK_MAX)
if (vm->stack.ptr + FLOAT_SIZE >= vm->stack.size)
// TODO: Error STACK_OVERFLOW
return;
// TODO: Make this machine independent (encode IEEE754 floats