#pragma once

#include <stdint.h>

// stack flags
#define ST_SYSTEM	0x0001		// System Stack Segment
#define ST_FREE		0x0002		// Stack Segment is not in use, may be reallocated to new thread

#define STACK_TOP(stack) (&stack->base[stack->size - 1])

struct stStack
{
	uint8_t 	*base;
	uint16_t	size;

	uint16_t	flags;
	
	struct stStack	*next;
};
typedef struct stStack avrStack;


uint16_t	stack_system_resize(uint16_t size);
avrStack*	stack_alloc(uint16_t size);
void		stack_free(avrStack *stack);