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31 // These functions are called from our assembler syscall stubs.
32 // C/C++ code should just assign 'errno' instead.
34 // TODO: should be __LIBC_HIDDEN__, but already exported by NDK :-(
35 // TODO: this isn't used on ARM.
36 extern "C" int __set_errno(int n) {
41 // TODO: this is only used on ARM, but is exported by NDK on all platforms :-(
42 extern "C" __LIBC_HIDDEN__ int __set_syscall_errno(int n) {
43 // Some syscalls, mmap() for example, have valid return
44 // values that are "negative". Since errno values are not
45 // greater than 131 on Linux, we will just consider
46 // anything significantly out of range as not-an-error.
48 return __set_errno(-n);