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| author | Florian Weimer <fweimer@redhat.com> | 2024-04-25 17:20:28 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2024-04-25 17:20:28 +0200 |
| commit | b62928f9070c6f3c5cc43a4cb89b4bfb950d7406 (patch) | |
| tree | bfedcb4323226749f2d14e1547914fca682688a5 | |
| parent | 049b7684c912dd32b67b1b15b0f43bf07d5f512e (diff) | |
| download | glibc-b62928f9070c6f3c5cc43a4cb89b4bfb950d7406.tar.gz glibc-b62928f9070c6f3c5cc43a4cb89b4bfb950d7406.tar.xz glibc-b62928f9070c6f3c5cc43a4cb89b4bfb950d7406.zip | |
x86: In ld.so, diagnose missing APX support in APX-only builds
At this point, this is mainly a tool for testing the early ld.so CPU compatibility diagnostics: GCC uses the new instructions in most functions, so it's easy to spot if some of the early code is not built correctly. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
| -rw-r--r-- | sysdeps/x86/dl-get-cpu-features.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/x86/dl-get-cpu-features.c b/sysdeps/x86/dl-get-cpu-features.c index 4d6c5c59a6..579d02d638 100644 --- a/sysdeps/x86/dl-get-cpu-features.c +++ b/sysdeps/x86/dl-get-cpu-features.c @@ -64,6 +64,11 @@ Fatal glibc error: CPU does not support x86-64-v%d\n", 4); # endif /* ISA level 4 */ # endif /* ISA level 3 */ # endif /* ISA level 2 */ +# ifdef GCCMACRO__APX_F__ + if (!CPU_FEATURE_USABLE_P (cpu_features, APX_F)) + _dl_fatal_printf ("\ +Fatal glibc error: CPU does not support APX\n"); +# endif # endif /* IS_IN (rtld) */ } } |