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/* Copyright (C) 2023 Aryadev Chavali
* You may distribute and modify this code under the terms of the
* GPLv2 license. You should have received a copy of the GPLv2
* license with this file. If not, please write to:
* aryadev@aryadevchavali.com.
* Created: 2023-10-15
* Author: Aryadev Chavali
* Description: Entrypoint to program
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
typedef uint64_t u64;
typedef uint32_t u32;
typedef int32_t i32;
typedef int64_t i64;
typedef float f32;
typedef double f64;
typedef uint8_t byte;
typedef u64 word;
#define VM_STACK_MAX 1024
typedef struct
{
struct Stack
{
byte data[VM_STACK_MAX];
word pointer;
} stack;
} vm_t;
typedef union
{
byte as_byte;
word as_word;
} data_t;
void vm_push_byte(vm_t *vm, data_t b)
{
if (vm->stack.pointer >= VM_STACK_MAX)
return;
vm->stack.data[vm->stack.pointer++] = b.as_byte;
}
void vm_push_word(vm_t *vm, data_t w)
{
// NOTE: Relies on sizeof measuring in bytes
if (vm->stack.pointer + sizeof(w) >= VM_STACK_MAX)
return;
memcpy(vm->stack.data + vm->stack.pointer, &w.as_word, sizeof(w.as_word));
vm->stack.pointer += sizeof(w.as_word);
}
int main(void)
{
puts("Hello, world!");
return 0;
}
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