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46 lines
1.4 KiB
46 lines
1.4 KiB
// See LICENSE for license details.
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#ifndef _MMAP_H
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#define _MMAP_H
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#include "vm.h"
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#include "syscall.h"
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#include "encoding.h"
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#include "file.h"
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#include "mtrap.h"
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#include <stddef.h>
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#define PROT_NONE 0
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#define PROT_READ 1
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#define PROT_WRITE 2
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#define PROT_EXEC 4
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#define MAP_PRIVATE 0x2
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#define MAP_FIXED 0x10
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#define MAP_ANONYMOUS 0x20
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#define MAP_POPULATE 0x8000
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#define MREMAP_FIXED 0x2
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extern int demand_paging;
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extern uint64_t randomize_mapping;
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uintptr_t pk_vm_init();
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int handle_page_fault(uintptr_t vaddr, int prot);
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void populate_mapping(const void* start, size_t size, int prot);
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int __valid_user_range(uintptr_t vaddr, size_t len);
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uintptr_t __do_mmap(uintptr_t addr, size_t length, int prot, int flags, file_t* file, off_t offset);
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uintptr_t do_mmap(uintptr_t addr, size_t length, int prot, int flags, int fd, off_t offset);
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int do_munmap(uintptr_t addr, size_t length);
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uintptr_t do_mremap(uintptr_t addr, size_t old_size, size_t new_size, int flags);
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uintptr_t do_mprotect(uintptr_t addr, size_t length, int prot);
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uintptr_t do_brk(uintptr_t addr);
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#define KVA_START ((uintptr_t)-1 << (VA_BITS-1))
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extern uintptr_t kva2pa_offset;
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#define kva2pa(va) ((uintptr_t)(va) - kva2pa_offset)
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#define pa2kva(pa) ((uintptr_t)(pa) + kva2pa_offset)
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#define kva2pa_maybe(va) ((uintptr_t)(va) >= KVA_START ? kva2pa(va) : (uintptr_t)(va))
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#define is_uva(va) ((uintptr_t)(va) < KVA_START)
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#endif
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