nuclear@29: #ifndef PROC_H_
nuclear@29: #define PROC_H_
nuclear@29: 
nuclear@43: #include <inttypes.h>
nuclear@42: #include "asmops.h"
nuclear@42: 
nuclear@42: #define MAX_PROC	128
nuclear@42: 
nuclear@42: struct context {
nuclear@47: 	struct registers regs;	/* saved general purpose registers */
nuclear@47: 	uint32_t instr_ptr;		/* saved eip */
nuclear@47: 	uint32_t stack_ptr;		/* saved esp */
nuclear@47: 	uint32_t flags;			/* saved eflags */
nuclear@47: 	uint32_t pgtbl_paddr;	/* physical address of the page table */
nuclear@42: 	/* TODO add FPU state */
nuclear@42: };
nuclear@42: 
nuclear@51: enum proc_state {
nuclear@51: 	STATE_RUNNING,
nuclear@51: 	STATE_BLOCKED,
nuclear@51: 	STATE_ZOMBIE
nuclear@51: };
nuclear@51: 
nuclear@29: 
nuclear@29: struct process {
nuclear@51: 	int id, parent;
nuclear@51: 	enum proc_state state;
nuclear@51: 
nuclear@51: 	int ticks_left;
nuclear@52: 
nuclear@52: 	/* extends of the process heap, increased by sbrk */
nuclear@52: 
nuclear@52: 	/* first page of the user stack, extends up to KMEM_START */
nuclear@52: 	int stack_start_pg;
nuclear@52: 
nuclear@42: 	struct context ctx;
nuclear@51: 
nuclear@51: 	struct process *next, *prev;	/* for the scheduler queues */
nuclear@29: };
nuclear@29: 
nuclear@47: void init_proc(void);
nuclear@47: 
nuclear@47: void context_switch(int pid);
nuclear@47: 
nuclear@51: int get_current_pid(void);
nuclear@51: struct process *get_current_proc(void);
nuclear@51: struct process *get_process(int pid);
nuclear@51: 
nuclear@29: #endif	/* PROC_H_ */