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authorSiddhesh Poyarekar <siddhesh@sourceware.org>2017-06-01 22:32:03 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2017-06-07 11:11:38 +0530
commitff08fc59e36e02074eba8ab39b0d9001363970f0 (patch)
tree1926c0dd4897a00b7541deb214bf6a1a480a8f8d /sysdeps/sparc/sparc32/dl-machine.h
parent6482e63403a3d13bf42f5029407b6151ad9f4ca5 (diff)
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tunables: Use glibc.tune.hwcap_mask tunable instead of _dl_hwcap_mask
Drop _dl_hwcap_mask when building with tunables.  This completes the
transition of hwcap_mask reading from _dl_hwcap_mask to tunables.

	* elf/dl-hwcaps.h: New file.
	* elf/dl-hwcaps.c: Include it.
	(_dl_important_hwcaps)[HAVE_TUNABLES]: Read and update
	glibc.tune.hwcap_mask.
	* elf/dl-cache.c: Include dl-hwcaps.h.
	(_dl_load_cache_lookup)[HAVE_TUNABLES]: Read
	glibc.tune.hwcap_mask.
	* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
	* elf/dl-support.c (_dl_hwcap2)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	* elf/rtld.c (rtld_global_ro)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	(process_envvars)[HAVE_TUNABLES]: Likewise.
	* sysdeps/generic/ldsodefs.h (rtld_global_ro)[HAVE_TUNABLES]:
	Likewise.
	* sysdeps/x86/cpu-features.c (init_cpu_features): Don't
	initialize dl_hwcap_mask when tunables are enabled.
Diffstat (limited to 'sysdeps/sparc/sparc32/dl-machine.h')
-rw-r--r--sysdeps/sparc/sparc32/dl-machine.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h
index e17ac8e4cd..f9ae13300d 100644
--- a/sysdeps/sparc/sparc32/dl-machine.h
+++ b/sysdeps/sparc/sparc32/dl-machine.h
@@ -27,6 +27,7 @@
 #include <sysdep.h>
 #include <tls.h>
 #include <dl-plt.h>
+#include <elf/dl-hwcaps.h>
 
 /* Return nonzero iff ELF header is compatible with the running host.  */
 static inline int
@@ -37,7 +38,8 @@ elf_machine_matches_host (const Elf32_Ehdr *ehdr)
   else if (ehdr->e_machine == EM_SPARC32PLUS)
     {
 #ifdef SHARED
-      return GLRO(dl_hwcap) & GLRO(dl_hwcap_mask) & HWCAP_SPARC_V9;
+      uint64_t hwcap_mask = GET_HWCAP_MASK();
+      return GLRO(dl_hwcap) & hwcap_mask & HWCAP_SPARC_V9;
 #else
       return GLRO(dl_hwcap) & HWCAP_SPARC_V9;
 #endif