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| author | Florian Weimer <fweimer@redhat.com> | 2022-02-03 10:58:59 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-02-10 11:51:55 +0100 |
| commit | 8c8510ab2790039e58995ef3a22309582413d3ff (patch) | |
| tree | 3ebd93ae5708d2f67a546aeccb200dd5b1dad06c /sysdeps/unix/sysv/linux/powerpc | |
| parent | f19fc997a5754a6c0bb9e43618f0597e878061f7 (diff) | |
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Linux: Consolidate auxiliary vector parsing
And optimize it slightly.
The large switch statement in _dl_sysdep_start can be replaced with
a large array. This reduces source code and binary size. On
i686-linux-gnu:
Before:
text data bss dec hex filename
7791 12 0 7803 1e7b elf/dl-sysdep.os
After:
text data bss dec hex filename
7135 12 0 7147 1beb elf/dl-sysdep.os
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/dl-auxv.h | 14 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/dl-support.c | 4 |
2 files changed, 6 insertions, 12 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-auxv.h b/sysdeps/unix/sysv/linux/powerpc/dl-auxv.h index 594371940a..ce2281cf11 100644 --- a/sysdeps/unix/sysv/linux/powerpc/dl-auxv.h +++ b/sysdeps/unix/sysv/linux/powerpc/dl-auxv.h @@ -16,15 +16,5 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <ldsodefs.h> - -#if IS_IN (libc) && !defined SHARED -int GLRO(dl_cache_line_size); -#endif - -/* Scan the Aux Vector for the "Data Cache Block Size" entry and assign it - to dl_cache_line_size. */ -#define DL_PLATFORM_AUXV \ - case AT_DCACHEBSIZE: \ - GLRO(dl_cache_line_size) = av->a_un.a_val; \ - break; +#define DL_PLATFORM_AUXV \ + GLRO(dl_cache_line_size) = auxv_values[AT_DCACHEBSIZE]; diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-support.c b/sysdeps/unix/sysv/linux/powerpc/dl-support.c new file mode 100644 index 0000000000..abe68a7049 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/dl-support.c @@ -0,0 +1,4 @@ +#include <elf/dl-support.c> + +/* Populated from the auxiliary vector. */ +int _dl_cache_line_size; |