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| author | Manjunath Matti <mmatti@linux.ibm.com> | 2024-03-19 15:29:48 -0500 |
|---|---|---|
| committer | Peter Bergner <bergner@linux.ibm.com> | 2024-03-19 17:19:27 -0500 |
| commit | 3ab9b88e2ac91062b6d493fe32bd101a55006c6a (patch) | |
| tree | a13cf4a7a73bb6f77748d2bfefedce381591be56 /sysdeps/generic | |
| parent | 3d53d18fc71c5d9ef4773b8bce04d54b80181926 (diff) | |
| download | glibc-3ab9b88e2ac91062b6d493fe32bd101a55006c6a.tar.gz glibc-3ab9b88e2ac91062b6d493fe32bd101a55006c6a.tar.xz glibc-3ab9b88e2ac91062b6d493fe32bd101a55006c6a.zip | |
powerpc: Add HWCAP3/HWCAP4 data to TCB for Power Architecture.
This patch adds a new feature for powerpc. In order to get faster access to the HWCAP3/HWCAP4 masks, similar to HWCAP/HWCAP2 (i.e. for implementing __builtin_cpu_supports() in GCC) without the overhead of reading them from the auxiliary vector, we now reserve space for them in the TCB. This is an ABI change for GLIBC 2.39. Suggested-by: Peter Bergner <bergner@linux.ibm.com> Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 117c901ccc..50f58a60e3 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -646,6 +646,8 @@ struct rtld_global_ro /* Mask for more hardware capabilities that are available on some platforms. */ EXTERN uint64_t _dl_hwcap2; + EXTERN uint64_t _dl_hwcap3; + EXTERN uint64_t _dl_hwcap4; EXTERN enum dso_sort_algorithm _dl_dso_sort_algo; |