diff options
| 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/powerpc/dl-procinfo.c | |
| 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/powerpc/dl-procinfo.c')
| -rw-r--r-- | sysdeps/powerpc/dl-procinfo.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/powerpc/dl-procinfo.c b/sysdeps/powerpc/dl-procinfo.c index a76bb6e5b0..8cf00aa7e3 100644 --- a/sysdeps/powerpc/dl-procinfo.c +++ b/sysdeps/powerpc/dl-procinfo.c @@ -38,6 +38,10 @@ needed. */ +/* The total number of available bits (including those prior to + _DL_HWCAP_FIRST). Some of these bits might not be used. */ +#define _DL_HWCAP_COUNT 128 + #ifndef PROCINFO_CLASS # define PROCINFO_CLASS #endif @@ -61,7 +65,7 @@ PROCINFO_CLASS struct cpu_features _dl_powerpc_cpu_features #if !defined PROCINFO_DECL && defined SHARED ._dl_powerpc_cap_flags #else -PROCINFO_CLASS const char _dl_powerpc_cap_flags[64][15] +PROCINFO_CLASS const char _dl_powerpc_cap_flags[_DL_HWCAP_COUNT][15] #endif #ifndef PROCINFO_DECL = { |