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nuclear@29
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1 #ifndef PROC_H_
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nuclear@29
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2 #define PROC_H_
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nuclear@29
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3
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nuclear@43
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4 #include <inttypes.h>
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nuclear@42
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5 #include "asmops.h"
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nuclear@68
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6 #include "rbtree.h"
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nuclear@42
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7
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nuclear@42
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8 #define MAX_PROC 128
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nuclear@42
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9
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nuclear@42
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10 struct context {
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nuclear@54
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11 /*struct registers regs;*/ /* saved general purpose registers */
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nuclear@54
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12 /*uint32_t instr_ptr;*/ /* saved eip */
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nuclear@47
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13 uint32_t stack_ptr; /* saved esp */
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nuclear@54
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14 /*uint32_t flags;*/ /* saved eflags */
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nuclear@47
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15 uint32_t pgtbl_paddr; /* physical address of the page table */
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nuclear@42
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16 /* TODO add FPU state */
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nuclear@42
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17 };
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nuclear@42
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18
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nuclear@51
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19 enum proc_state {
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nuclear@53
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20 STATE_RUNNABLE,
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nuclear@51
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21 STATE_BLOCKED,
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nuclear@51
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22 STATE_ZOMBIE
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nuclear@51
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23 };
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nuclear@51
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24
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nuclear@29
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25
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nuclear@29
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26 struct process {
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nuclear@51
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27 int id, parent;
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nuclear@51
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28 enum proc_state state;
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nuclear@51
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29
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nuclear@72
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30 int exit_status;
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nuclear@72
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31
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nuclear@55
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32 /* when blocked it's waiting for a wakeup on this address */
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nuclear@55
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33 void *wait_addr;
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nuclear@55
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34
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nuclear@51
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35 int ticks_left;
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nuclear@52
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36
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nuclear@68
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37 /* process vm map */
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nuclear@68
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38 struct rbtree vmmap;
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nuclear@68
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39
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nuclear@52
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40 /* extends of the process heap, increased by sbrk */
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nuclear@52
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41
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nuclear@52
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42 /* first page of the user stack, extends up to KMEM_START */
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nuclear@54
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43 int user_stack_pg;
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nuclear@54
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44 /* first page of the kernel stack, (KERN_STACK_SIZE) */
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nuclear@54
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45 int kern_stack_pg;
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nuclear@52
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46
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nuclear@42
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47 struct context ctx;
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nuclear@51
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48
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nuclear@72
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49 struct process *child_list;
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nuclear@72
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50
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nuclear@51
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51 struct process *next, *prev; /* for the scheduler queues */
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nuclear@72
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52 struct process *sib_next; /* for the sibling list */
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nuclear@29
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53 };
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nuclear@29
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54
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nuclear@47
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55 void init_proc(void);
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nuclear@47
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56
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nuclear@72
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57 int sys_fork(void);
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nuclear@72
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58 int sys_exit(int status);
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nuclear@72
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59 int sys_waitpid(int pid, int *status, int opt);
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nuclear@57
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60
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nuclear@47
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61 void context_switch(int pid);
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nuclear@47
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62
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nuclear@56
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63 void set_current_pid(int pid);
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nuclear@51
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64 int get_current_pid(void);
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nuclear@51
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65 struct process *get_current_proc(void);
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nuclear@51
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66 struct process *get_process(int pid);
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nuclear@51
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67
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nuclear@72
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68 int sys_getpid(void);
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nuclear@72
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69 int sys_getppid(void);
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nuclear@72
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70
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nuclear@57
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71 /* defined in proc-asm.S */
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nuclear@57
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72 uint32_t get_instr_ptr(void);
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nuclear@57
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73 uint32_t get_caller_instr_ptr(void);
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nuclear@57
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74 void get_instr_stack_ptr(uint32_t *iptr, uint32_t *sptr);
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nuclear@57
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75
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nuclear@29
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76 #endif /* PROC_H_ */
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