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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-12-03 20:32:49 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-12-09 15:04:56 -0300 |
| commit | 0487ebed2278b20971af4cabf186fd3681adccf0 (patch) | |
| tree | 3d5424fedbc56d2436e0857dbf2e48cbda4c6077 /nptl | |
| parent | 7badf7b06fe796b3f549663d0d65d3012a7e0457 (diff) | |
| download | glibc-0487ebed2278b20971af4cabf186fd3681adccf0.zip glibc-0487ebed2278b20971af4cabf186fd3681adccf0.tar.gz glibc-0487ebed2278b20971af4cabf186fd3681adccf0.tar.bz2 | |
nptl: Add more missing placeholder abi symbol from nanosleep move
This patch adds the missing __libpthread_version_placeholder for
GLIBC_2.2.6 version from the nanosleep implementation move from
libpthread to libc (79a547b162).
It also fixes the wrong compat symbol definitions added by changing
back the version used on vfork check and remove the
__libpthread_version_placeholder added on some ABI (4f4bb489e0dd).
The __libpthread_version_placeholder is also refactored to make it
simpler to add new compat_symbols by adding a new macro
compat_symbol_unique which uses the compiler extension __COUNTER__
to generate unique strong alias to be used with compat_symbol.
Checked with a updated-abi on the all affected abis of the nanosleep
move.
Change-Id: I347a4dbdc931bb42b359456932dd1e17aa4d4078
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/libpthread-compat.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/nptl/libpthread-compat.c b/nptl/libpthread-compat.c index 7398f5e..e2db3f2 100644 --- a/nptl/libpthread-compat.c +++ b/nptl/libpthread-compat.c @@ -16,8 +16,18 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +#include <sys/cdefs.h> #include <shlib-compat.h> +#ifdef SHARED +static void +attribute_compat_text_section +__attribute_used__ +__libpthread_version_placeholder (void) +{ +} +#endif + /* This is an unused compatibility symbol definition, to prevent ld from creating a weak version definition for GLIBC_2.1.2. (__vfork used to be defined at that version, but it is now provided by libc, @@ -26,12 +36,12 @@ version or later, the placeholder symbol is not needed because there are plenty of other symbols which populate those later versions. */ -#if (SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_2_6)) -void -attribute_compat_text_section -__libpthread_version_placeholder (void) -{ -} -compat_symbol (libpthread, __libpthread_version_placeholder, - __libpthread_version_placeholder, GLIBC_2_1_2); +#if (SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_2)) +compat_symbol_unique (libpthread, + __libpthread_version_placeholder, GLIBC_2_1_2); +#endif + +#if (SHLIB_COMPAT (libpthread, GLIBC_2_2_6, GLIBC_2_3)) +compat_symbol_unique (libpthread, + __libpthread_version_placeholder, GLIBC_2_2_6); #endif |