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Re: Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM

From: Szabolcs Nagy <szabolcs dot nagy at arm dot com>
To: Joseph Myers <joseph at codesourcery dot com>, libc-alpha at sourceware dot org
Cc: nd at arm dot com
Date: Fri, 20 Apr 2018 17:26:49 +0100
Subject: Re: Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM
Nodisclaimer: True
References: <alpine.DEB.2.20.1804201619000.14779@digraph.polyomino.org.uk>
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Spamdiagnosticoutput: 1:99

On 20/04/18 17:19, Joseph Myers wrote:

This patch updates the aarch64 bits/hwcap.h and dl-procinfo.c for the
new HWCAP_ASIMDFHM value in Linux 4.16.

Tested with build-many-glibcs.py for aarch64-linux-gnu.

2018-04-20  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h (HWCAP_ASIMDFHM):
	New macro.
	* sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c (_DL_HWCAP_COUNT):
	Increase to 24.
	(_dl_aarch64_cap_flags): Add asimdfhm.


this is ok to commit.

thanks.

diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
index 569eb07..6f05ec1 100644
--- a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
@@ -44,3 +44,4 @@
  #define HWCAP_ASIMDDP		(1 << 20)
  #define HWCAP_SHA512		(1 << 21)
  #define HWCAP_SVE		(1 << 22)
+#define HWCAP_ASIMDFHM		(1 << 23)
diff --git a/sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c b/sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c
index 940f648..054d5c8 100644
--- a/sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c
+++ b/sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c
@@ -57,7 +57,7 @@ PROCINFO_CLASS struct cpu_features _dl_aarch64_cpu_features
  #endif

/* Number of HWCAP bits set. */

-#define _DL_HWCAP_COUNT 23
+#define _DL_HWCAP_COUNT 24

#if !defined PROCINFO_DECL && defined SHARED

    ._dl_aarch64_cap_flags
@@ -68,7 +68,8 @@ PROCINFO_CLASS const char _dl_aarch64_cap_flags[_DL_HWCAP_COUNT][10]
  /* Matches the names in arch/arm64/kernel/cpuinfo.c of Linux.  */
  = { "fp", "asimd", "evtstrm", "aes", "pmull", "sha1", "sha2", "crc32",
      "atomics", "fphp", "asimdhp", "cpuid", "asimdrdm", "jscvt", "fcma",
-    "lrcpc", "dcpop", "sha3", "sm3", "sm4", "asimddp", "sha512", "sve" }
+    "lrcpc", "dcpop", "sha3", "sm3", "sm4", "asimddp", "sha512", "sve",
+    "asimdfhm" }
  #endif
  #if !defined SHARED || defined PROCINFO_DECL
  ;

References:
- Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM
  - From: Joseph Myers

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