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#ifndef PROGRAM_MAN
#define PROGRAM_MAN
#include "types.h"
#define PROG_0 0x0
#define PROG_1 0x1
#define PROG_VSTART 0x1000
#define PROG_0_PREFIX 0xA000
#define PROG_1_PREFIX 0xC000
#define PROG_0_INFO // TODO
#define PROG_1_INFO // TODO find a space in the ram
struct program_info {
volatile int enabled:1;
volatile int running:1;
volatile int exiting:1;
volatile int heap_addr:13;
volatile void (*quit_cb)(void); // 16
};
/*
* Initialize the program manager system
*/
void progman_init();
/*
* Check if it can start a new program
* If it succedes, the program id is returned,
* otherwise it is returned an error number
*/
#define PROG_REQ_FULL -1
#define PROG_REQ_ERR -2 // Maybe we don't need this, but just in case
int8_t prog_req(struct program_info *info);
/*
* It allocates a program in the RAM
* To obtain the right id call prog_req() first
* Basic informations must be allocated and referenced by a program_base struct
*/
struct program_base {
void * inst_set; // pointer to the instructions set
size_t inst_size; // size of the instructions set
void * bss_data; // pointer to the bss/data space
size_t data_size; // size of the bss/data space
size_t stack_size; // size of the stack to determine the stack limit
};
void prog_alloc(int8_t id, struct program_info *info, const struct program_base *base);
/*
* It jumps the program counter to the given one
*/
void prog_exec(int8_t id, struct program_info *info);
/*
* It sets a quit callback
*/
void prog_0_qcb(void (*callback)(void));
void prog_1_qcb(void (*callback)(void));
/*
* It quits a program, if a callback is set, it will be called
*/
void prog_0_quit();
void prog_1_quit();
/*
* It forces a program to quit
*/
void prog_0_fquit();
void prog_1_fquit();
#endif
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