nuclear@29: #ifndef PROC_H_
nuclear@29: #define PROC_H_
nuclear@29: 
nuclear@43: #include <inttypes.h>
nuclear@42: #include "asmops.h"
nuclear@68: #include "rbtree.h"
nuclear@90: #include "file.h"
nuclear@42: 
nuclear@42: #define MAX_PROC	128
nuclear@90: #define MAX_FD		64
nuclear@42: 
nuclear@42: struct context {
nuclear@54: 	/*struct registers regs;*/	/* saved general purpose registers */
nuclear@54: 	/*uint32_t instr_ptr;*/		/* saved eip */
nuclear@47: 	uint32_t stack_ptr;		/* saved esp */
nuclear@54: 	/*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@53: 	STATE_RUNNABLE,
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@72: 	int exit_status;
nuclear@72: 
nuclear@55: 	/* when blocked it's waiting for a wakeup on this address */
nuclear@55: 	void *wait_addr;
nuclear@55: 
nuclear@51: 	int ticks_left;
nuclear@52: 
nuclear@68: 	/* process vm map */
nuclear@68: 	struct rbtree vmmap;
nuclear@68: 
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@54: 	int user_stack_pg;
nuclear@54: 	/* first page of the kernel stack, (KERN_STACK_SIZE) */
nuclear@54: 	int kern_stack_pg;
nuclear@52: 
nuclear@42: 	struct context ctx;
nuclear@51: 
nuclear@90: 	/* open files */
nuclear@90: 	struct file files[MAX_FD];
nuclear@90: 
nuclear@72: 	struct process *child_list;
nuclear@72: 
nuclear@51: 	struct process *next, *prev;	/* for the scheduler queues */
nuclear@72: 	struct process *sib_next;		/* for the sibling list */
nuclear@29: };
nuclear@29: 
nuclear@47: void init_proc(void);
nuclear@47: 
nuclear@72: int sys_fork(void);
nuclear@72: int sys_exit(int status);
nuclear@72: int sys_waitpid(int pid, int *status, int opt);
nuclear@57: 
nuclear@47: void context_switch(int pid);
nuclear@47: 
nuclear@56: void set_current_pid(int pid);
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@72: int sys_getpid(void);
nuclear@72: int sys_getppid(void);
nuclear@72: 
nuclear@57: /* defined in proc-asm.S */
nuclear@57: uint32_t get_instr_ptr(void);
nuclear@57: uint32_t get_caller_instr_ptr(void);
nuclear@57: void get_instr_stack_ptr(uint32_t *iptr, uint32_t *sptr);
nuclear@57: 
nuclear@29: #endif	/* PROC_H_ */