diff options
author | Adhemerval Zanella <adhemerval.zanella@linaro.com> | 2015-04-17 10:58:31 -0300 |
---|---|---|
committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2015-05-26 10:10:36 -0300 |
commit | f534255e4d276ee7b20b45637d16a00b122e5df3 (patch) | |
tree | abbedc3d05bdfb526d0171fccd87fb84ecb1acd9 /sysdeps/unix/sysv/linux/s390/init-first.c | |
parent | 829a679fac1fe173e81cb2c08204d2da86cf3f3a (diff) | |
download | glibc-f534255e4d276ee7b20b45637d16a00b122e5df3.tar.gz glibc-f534255e4d276ee7b20b45637d16a00b122e5df3.tar.xz glibc-f534255e4d276ee7b20b45637d16a00b122e5df3.zip |
Consolidate vDSO macros and usage
This patch consolidate the Linux vDSO define and usage across all ports that uses it. The common vDSO definitions and calling through {INLINE/INTERNAL}_VSYSCALL macros are moved to a common header sysdep-vdso.h and vDSO name declaration and prototype is defined using a common macro. Also PTR_{MANGLE,DEMANGLE} is added to ports that does not use them for vDSO calls (aarch64, powerpc, s390, and tile) and thus it will reflect in code changes. For ports that already implement pointer mangling/demangling in vDSO system (i386, x32, x86_64) this patch is mainly a code refactor. Checked on x32, x86_64, x32, ppc64le, and aarch64.
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/init-first.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/init-first.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/init-first.c b/sysdeps/unix/sysv/linux/s390/init-first.c index 2e00a99866..8129967ba5 100644 --- a/sysdeps/unix/sysv/linux/s390/init-first.c +++ b/sysdeps/unix/sysv/linux/s390/init-first.c @@ -23,15 +23,14 @@ # undef __clock_getres # include <libc-vdso.h> -long int (*__vdso_gettimeofday) (struct timeval *, void *) attribute_hidden; +long int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *) + attribute_hidden; -long int (*__vdso_clock_gettime) (clockid_t, struct timespec *) +long int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *) __attribute__ ((nocommon)); -strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden) -long int (*__vdso_clock_getres) (clockid_t, struct timespec *) +long int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *) __attribute__ ((nocommon)); -strong_alias (__vdso_clock_getres, __GI___vdso_clock_getres attribute_hidden) static inline void @@ -39,9 +38,17 @@ _libc_vdso_platform_setup (void) { PREPARE_VERSION (linux2629, "LINUX_2.6.29", 123718585); - __vdso_gettimeofday = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2629); - __vdso_clock_gettime = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2629); - __vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres", &linux2629); + void *p = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2629); + PTR_MANGLE (p); + VDSO_SYMBOL (gettimeofday) = p; + + p = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2629); + PTR_MANGLE (p); + VDSO_SYMBOL (clock_gettime) = p; + + p = _dl_vdso_vsym ("__kernel_clock_getres", &linux2629); + PTR_MANGLE (p); + VDSO_SYMBOL (clock_getres) = p; } # define VDSO_SETUP _libc_vdso_platform_setup |