this repo has no description
sys/mman.h functions compat improvements
+80
-20
+1
src/libSystem/CMakeLists.txt
+1
src/libSystem/CMakeLists.txt
+46
src/libSystem/kernel-bsd/mman.cpp
+46
src/libSystem/kernel-bsd/mman.cpp
···
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#include "mman.h"
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#include <sys/mman.h>
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#include <util/debug.h>
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#include "../common/auto.h"
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const static Darling::MappedFlag mmapFlags[] = {
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{ DARWIN_MAP_ANON, MAP_ANONYMOUS },
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{ DARWIN_MAP_FIXED, MAP_FIXED },
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{ DARWIN_MAP_PRIVATE, MAP_PRIVATE },
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{ DARWIN_MAP_SHARED, MAP_SHARED },
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};
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void* __darwin_mmap(void *addr, size_t len, int prot, int flags, int fd, uint64_t offset)
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{
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int nativeFlags = Darling::flagsDarwinToNative(mmapFlags, sizeof(mmapFlags)/sizeof(mmapFlags[0]), flags);
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void* rv = ::mmap(addr, len, prot, nativeFlags, fd, offset);
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if (rv == MAP_FAILED)
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errnoOut();
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return rv;
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}
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MAP_FUNCTION2(int, munmap, void*, size_t);
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MAP_FUNCTION3(int, mprotect, void*, size_t, int);
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MAP_FUNCTION3(int, mincore, void*, size_t, unsigned char*);
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int __darwin_minherit(caddr_t addr, size_t len, int inherit)
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{
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STUB();
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return 0;
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}
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int __darwin_madvise(void *addr, size_t len, int advice)
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{
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if (advice == DARWIN_MADV_FREE)
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advice = MADV_DONTNEED;
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else if (advice == DARWIN_MADV_ZERO_WIRED_PAGES)
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return 0;
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return AutoErrno<int>(madvise, addr, len, advice);
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}
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MAP_FUNCTION3(int, posix_madvise, void*, size_t, int);
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MAP_FUNCTION2(int, mlock, const void*, size_t);
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MAP_FUNCTION2(int, munlock, const void*, size_t);
+31
src/libSystem/kernel-bsd/mman.h
+31
src/libSystem/kernel-bsd/mman.h
···
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#ifndef MMAN_H
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#define MMAN_H
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#include <stddef.h>
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#include <stdint.h>
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extern "C" {
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#define DARWIN_MAP_ANON 0x1000
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#define DARWIN_MAP_FIXED 16
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#define DARWIN_MAP_SHARED 1
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#define DARWIN_MAP_PRIVATE 2
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#define DARWIN_MADV_FREE 5
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#define DARWIN_MADV_ZERO_WIRED_PAGES 6
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void* __darwin_mmap(void *addr, size_t len, int prot, int flags, int fd, uint64_t offset);
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int __darwin_munmap(void *addr, size_t len);
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int __darwin_mprotect(void *addr, size_t len, int prot);
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int __darwin_mincore(void* addr, size_t len, unsigned char *vec);
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int __darwin_minherit(void* addr, size_t len, int inherit);
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int __darwin_madvise(void *addr, size_t len, int advice);
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int __darwin_posix_madvise(void *addr, size_t len, int advice);
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int __darwin_mlock(const void *addr, size_t len);
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int __darwin_munlock(const void *addr, size_t len);
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}
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#endif
+2
-1
src/libSystem/libc/libc-stub.h
+2
-1
src/libSystem/libc/libc-stub.h
-19
src/libSystem/libc/mac.c
-19
src/libSystem/libc/mac.c
···
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void libiconv_set_relocation_prefix(const char* orig, const char* curr) {
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}
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void *__darwin_mmap(void *addr, size_t length, int prot, int flags,
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int fd, off_t offset) {
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LOGF("mmap: addr=%p length=%lu prot=%d flags=%d fd=%d offset=%lu\n",
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addr, (unsigned long)length, prot, flags, fd, offset);
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// MAP_ANON is 0x1000 on darwin but 0x20 on linux.
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//
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// The following flags are darwin only.
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// #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */
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// #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */
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// #define MAP_RESERVED0080 0x0080 /* previously unimplemented MAP_INHERIT */
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// #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */
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// #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */
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// #define MAP_NOCACHE 0x0400 /* don't cache pages for this mapping */
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flags = (flags & 0x1f) | (flags & 0x1000 ? MAP_ANONYMOUS : 0);
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return mmap(addr, length, prot, flags, fd, offset);
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}
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int task_get_exception_ports() {
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fprintf(stderr, "task_get_exception_ports\n");
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return 0;