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Merge "Move __set_errno to ndk_cruft.cpp."

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Christopher Ferris 2015-10-30 16:02:01 +00:00 committed by Gerrit Code Review
commit e75453d5dd
2 changed files with 10 additions and 11 deletions
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15
libc/bionic/__set_errno.cpp
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@ -36,20 +36,13 @@
// system these are the same size, but on a 64-bit system they're not.
// 'long' gives us 32-bit on 32-bit systems, 64-bit on 64-bit systems.
// __set_errno was mistakenly exposed in <errno.h> in the 32-bit NDK.
// We need the extra level of indirection so that the .hidden directives
// in the system call stubs don't cause __set_errno to be hidden, breaking
// old NDK apps.
// Since __set_errno was mistakenly exposed in <errno.h> in the 32-bit
// NDK, use a differently named internal function for the system call
// stubs. This avoids having the stubs .hidden directives accidentally
// hide __set_errno for old NDK apps.
// This one is for internal use only and used by both LP32 and LP64 assembler.
extern "C" __LIBC_HIDDEN__ long __set_errno_internal(int n) {
errno = n;
return -1;
}
// This one exists for the LP32 NDK and is not present at all in LP64.
#if !defined(__LP64__)
extern "C" long __set_errno(int n) {
return __set_errno_internal(n);
}
#endif

6
libc/bionic/ndk_cruft.cpp
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@ -357,6 +357,12 @@ extern "C" pthread_internal_t* __get_thread() {
return __real_get_thread();
}
// This one exists only for the LP32 NDK and is not present anywhere else.
extern "C" long __set_errno_internal(int);
extern "C" long __set_errno(int n) {
return __set_errno_internal(n);
}
#endif // !defined(__LP64__)
// This was never implemented in bionic, only needed for ABI compatibility with the NDK.