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add exercise of lab5 spoc discussion

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yuchen
2015-04-20 12:44:41 +08:00
parent 331b8dff5a
commit f39299c9a2
104 changed files with 12528 additions and 0 deletions
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12
related_info/lab5/lab5-spoc-discuss/kern/fs/fs.h Normal file
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#ifndef __KERN_FS_FS_H__
#define __KERN_FS_FS_H__
#include <mmu.h>
#define SECTSIZE 512
#define PAGE_NSECT (PGSIZE / SECTSIZE)
#define SWAP_DEV_NO 1
#endif /* !__KERN_FS_FS_H__ */

27
related_info/lab5/lab5-spoc-discuss/kern/fs/swapfs.c Normal file
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#include <swap.h>
#include <swapfs.h>
#include <mmu.h>
#include <fs.h>
#include <ide.h>
#include <pmm.h>
#include <assert.h>
void
swapfs_init(void) {
static_assert((PGSIZE % SECTSIZE) == 0);
if (!ide_device_valid(SWAP_DEV_NO)) {
panic("swap fs isn't available.\n");
}
max_swap_offset = ide_device_size(SWAP_DEV_NO) / (PGSIZE / SECTSIZE);
}
int
swapfs_read(swap_entry_t entry, struct Page *page) {
return ide_read_secs(SWAP_DEV_NO, swap_offset(entry) * PAGE_NSECT, page2kva(page), PAGE_NSECT);
}
int
swapfs_write(swap_entry_t entry, struct Page *page) {
return ide_write_secs(SWAP_DEV_NO, swap_offset(entry) * PAGE_NSECT, page2kva(page), PAGE_NSECT);
}

12
related_info/lab5/lab5-spoc-discuss/kern/fs/swapfs.h Normal file
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#ifndef __KERN_FS_SWAPFS_H__
#define __KERN_FS_SWAPFS_H__
#include <memlayout.h>
#include <swap.h>
void swapfs_init(void);
int swapfs_read(swap_entry_t entry, struct Page *page);
int swapfs_write(swap_entry_t entry, struct Page *page);
#endif /* !__KERN_FS_SWAPFS_H__ */