1// See LICENSE for license details. 2 3#ifndef _MMAP_H 4#define _MMAP_H 5 6#include "vm.h" 7#include "syscall.h" 8#include "encoding.h" 9#include "file.h" 10#include "mtrap.h" 11#include <stddef.h> 12 13#define PROT_NONE 0 14#define PROT_READ 1 15#define PROT_WRITE 2 16#define PROT_EXEC 4 17 18#define MAP_PRIVATE 0x2 19#define MAP_FIXED 0x10 20#define MAP_ANONYMOUS 0x20 21#define MAP_POPULATE 0x8000 22#define MREMAP_FIXED 0x2 23 24extern int demand_paging; 25uintptr_t pk_vm_init(); 26int handle_page_fault(uintptr_t vaddr, int prot); 27void populate_mapping(const void* start, size_t size, int prot); 28void __map_kernel_range(uintptr_t va, uintptr_t pa, size_t len, int prot); 29int __valid_user_range(uintptr_t vaddr, size_t len); 30uintptr_t __do_mmap(uintptr_t addr, size_t length, int prot, int flags, file_t* file, off_t offset); 31uintptr_t do_mmap(uintptr_t addr, size_t length, int prot, int flags, int fd, off_t offset); 32int do_munmap(uintptr_t addr, size_t length); 33uintptr_t do_mremap(uintptr_t addr, size_t old_size, size_t new_size, int flags); 34uintptr_t do_mprotect(uintptr_t addr, size_t length, int prot); 35uintptr_t do_brk(uintptr_t addr); 36 37#define va2pa(va) ({ uintptr_t __va = (uintptr_t)(va); \ 38 extern uintptr_t first_free_paddr; \ 39 __va >= DRAM_BASE ? __va : __va + first_free_paddr; }) 40 41#endif 42