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[PATCH] Add Aarch64 SVE defines
- From: Alan Hayward <Alan dot Hayward at arm dot com>
- To: "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Cc: nd <nd at arm dot com>
- Date: Fri, 8 Dec 2017 14:59:17 +0000
- Subject: [PATCH] Add Aarch64 SVE defines
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This patch adds Aarch64 SVE specific defines to glibc.
The Linux kernel changes for Aarch64 SVE have recently been pulled
into the head:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c9b012e5f4a1d01dfa8abc6318211a67ba7d5db2
Although not due to be in a kernel release until early 2018, we'd
like to make sure any glibc changes are ready for a similar time.
I haven't run any testsuites as the changes are should not effect them.
Is this ok?
Thanks,
Alan.
2017-12-08 Alan Hayward <alan.hayward@arm.com>
* elf/elf.h: Add NT_ARM_SVE.
* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h: Add HWCAP_SVE.
elf/elf.h | 2 ++
sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/elf/elf.h b/elf/elf.h
index 01a43ce9ac..e54a529d51 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -795,6 +795,8 @@ typedef struct
#define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */
#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
#define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */
+#define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension
+ registers */
/* Legal values for the note segment descriptor types for object files. */
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
index e46bb69118..255ddf0581 100644
--- a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
@@ -38,3 +38,4 @@
#define HWCAP_FCMA (1 << 14)
#define HWCAP_LRCPC (1 << 15)
#define HWCAP_DCPOP (1 << 16)
+#define HWCAP_SVE (1 << 22)