#ifndef _CONTEXT_H_
#define _CONTEXT_H_

#include "thread.h"
#include "plat_types.h"
#include "func.h"

#define STACK_CHUNK_SIZE 4096-(sizeof(struct stackchunk *)*2+sizeof(uint32_t))

typedef struct stackchunk {
	struct    stackchunk * next;
	struct    stackchunk * prev;
	uint32_t  used;
	char      data[STACK_CHUNK_SIZE];
} stackchunk;

typedef struct {
	rhope_func       func;
	struct calldata  *params;
} unwind_cell;

typedef struct context {
	stackchunk   *stack_begin;
	stackchunk   *current_stack;
	unwind_cell  *unwind;
} context;

stackchunk * new_stack();
context * new_context();
void * alloc_stack(context * ct, uint32_t size);
struct calldata * alloc_cdata(context * ct, uint32_t num_params);
void free_stack(context * ct, void * data);
void free_context(context * c);
#endif //_CONTEXT_H_