92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
// proc.h
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// Author: Josh Holtrop
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// Date; 08/18/05
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// Modified: 08/18/05
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#ifndef __HOS_PROC_H__
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#define __HOS_PROC_H__ __HOS_PROC_H__
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#ifdef _HOS_CPP_
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extern "C" {
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#endif
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#include "hos_defines.h"
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#include "kernel.h"
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#define PROC_MIN_USER_PID 1024
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typedef struct
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{
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u32_t *page_dir; /* Page directory with physical PT addys */
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u32_t *v_page_dir; /* Virtual page table addresses for init */
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u32_t p_page_dir; /* Physical address of page directory */
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u32_t size; /* Process size, bytes from 0 through bss */
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u32_t uid; /* Process owner */
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int_stack_t int_stack;
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} process_t;
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typedef struct
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{
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u16_t backlink;
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u16_t reserved0;
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u32_t esp0;
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u16_t ss0;
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u16_t _ss0;
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u32_t esp1;
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u16_t ss1;
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u16_t _ss1;
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u32_t esp2;
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u16_t ss2;
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u16_t _ss2;
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u32_t pdbr;
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u32_t eip;
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u32_t eflags;
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u32_t eax;
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u32_t ecx;
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u32_t edx;
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u32_t ebx;
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u32_t esp;
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u32_t ebp;
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u32_t esi;
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u32_t edi;
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u16_t es;
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u16_t _es;
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u16_t cs;
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u16_t _cs;
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u16_t ss;
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u16_t _ss;
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u16_t ds;
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u16_t _ds;
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u16_t fs;
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u16_t _fs;
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u16_t gs;
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u16_t _gs;
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u16_t ldt;
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u16_t _ldt;
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u16_t trap;
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u16_t iomap;
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} __attribute__((packed)) tss_t;
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int proc_init();
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process_t *proc_get_struct(u32_t pid);
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void proc_sched(int_stack_t *int_stack);
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u32_t get_pid();
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void switch_task(int_stack_t *int_stack, u32_t new_task);
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u32_t create_task(void *base, u32_t image_size, u32_t bss_size, void *entry);
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process_t *create_process(void *base, u32_t image_size, u32_t bss_size, void *entry);
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void create_address_space(process_t *p);
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void create_process_stack(process_t *p, void *entry);
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void copy_into_address_space(u32_t dest_addr,
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char *src_addr,
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u32_t pages,
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process_t *p);
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void zero_address_space(u32_t dest_addr, u32_t pages, process_t *p);
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#ifdef _HOS_CPP_
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}
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#endif
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#endif
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