From: Sergey Bugaev <bugaevc@gmail.com>
To: libc-alpha@sourceware.org, bug-hurd@gnu.org
Subject: [RFC PATCH 13/23] aarch64: Add dl-procinfo
Date: Wed, 3 Jan 2024 20:14:46 +0300 [thread overview]
Message-ID: <20240103171502.1358371-14-bugaevc@gmail.com> (raw)
In-Reply-To: <20240103171502.1358371-1-bugaevc@gmail.com>
This is based on the Linux version, but doesn't define
GLRO(dl_aarch64_cap_flags) and implement _dl_hwcap_string (which seems
unused anyway) based on Linux HWCAP bit values.
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---
sysdeps/aarch64/dl-procinfo.c | 59 +++++++++++++++++++++++++++++++++++
sysdeps/aarch64/dl-procinfo.h | 38 ++++++++++++++++++++++
2 files changed, 97 insertions(+)
create mode 100644 sysdeps/aarch64/dl-procinfo.c
create mode 100644 sysdeps/aarch64/dl-procinfo.h
diff --git a/sysdeps/aarch64/dl-procinfo.c b/sysdeps/aarch64/dl-procinfo.c
new file mode 100644
index 00000000..5a51edbc
--- /dev/null
+++ b/sysdeps/aarch64/dl-procinfo.c
@@ -0,0 +1,59 @@
+/* Data for AArch64 version of processor capability information.
+ Copyright (C) 2017-2024 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* If anything should be added here check whether the size of each string
+ is still ok with the given array size.
+
+ All the #ifdefs in the definitions are quite irritating but
+ necessary if we want to avoid duplicating the information. There
+ are three different modes:
+
+ - PROCINFO_DECL is defined. This means we are only interested in
+ declarations.
+
+ - PROCINFO_DECL is not defined:
+
+ + if SHARED is defined the file is included in an array
+ initializer. The .element = { ... } syntax is needed.
+
+ + if SHARED is not defined a normal array initialization is
+ needed.
+ */
+
+#ifndef PROCINFO_CLASS
+# define PROCINFO_CLASS
+#endif
+
+#if !IS_IN (ldconfig)
+# if !defined PROCINFO_DECL && defined SHARED
+ ._dl_aarch64_cpu_features
+# else
+PROCINFO_CLASS struct cpu_features _dl_aarch64_cpu_features
+# endif
+# ifndef PROCINFO_DECL
+= { }
+# endif
+# if !defined SHARED || defined PROCINFO_DECL
+;
+# else
+,
+# endif
+#endif
+
+#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff --git a/sysdeps/aarch64/dl-procinfo.h b/sysdeps/aarch64/dl-procinfo.h
new file mode 100644
index 00000000..176de5cd
--- /dev/null
+++ b/sysdeps/aarch64/dl-procinfo.h
@@ -0,0 +1,38 @@
+/* Processor capability information handling macros - aarch64 version.
+ Copyright (C) 2017-2024 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _DL_PROCINFO_H
+#define _DL_PROCINFO_H 1
+
+#include <sys/auxv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <sysdep.h>
+
+/* We cannot provide a general printing function. */
+#define _dl_procinfo(type, word) -1
+
+/* No additional library search paths. */
+#define HWCAP_IMPORTANT HWCAP_ATOMICS
+
+/* There're no platforms to filter out. */
+#define _DL_HWCAP_PLATFORM 0
+
+#define _dl_string_platform(str) (-1)
+
+#endif /* dl-procinfo.h */
--
2.43.0
next prev parent reply other threads:[~2024-01-03 17:21 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-03 17:14 [RFC PATCH 00/23] aarch64-gnu port Sergey Bugaev
2024-01-03 17:14 ` [PATCH 01/23] hurd: Add some missing includes Sergey Bugaev
2024-01-03 20:43 ` Samuel Thibault
2024-01-03 21:08 ` Sergey Bugaev
2024-01-03 21:24 ` Sergey Bugaev
2024-01-03 21:35 ` Samuel Thibault
2024-01-03 21:00 ` Samuel Thibault
2024-01-03 17:14 ` [PATCH 02/23] hurd: Declare _hurd_intr_rpc_msg* with protected visibility Sergey Bugaev
2024-01-03 21:00 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 03/23] Allow glibc to be compiled without EXEC_PAGESIZE Sergey Bugaev
2024-03-11 16:13 ` Florian Weimer
2024-03-25 11:58 ` Florian Weimer
2024-03-25 12:24 ` Sergey Bugaev
2024-04-10 11:57 ` Florian Weimer
2024-04-15 12:53 ` Sergey Bugaev
2024-04-22 21:01 ` Samuel Thibault
2024-01-03 17:14 ` [PATCH 04/23] mach: Drop some unnecessary vm_param.h includes Sergey Bugaev
2024-01-03 21:00 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 05/23] hurd: Disable Prefer_MAP_32BIT_EXEC on non-x86_64 for now Sergey Bugaev
2024-01-03 17:14 ` [PATCH 06/23] mach: Drop SNARF_ARGS macro Sergey Bugaev
2024-01-03 21:00 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 07/23] hurd: Pass the data pointer to _hurd_stack_setup explicitly Sergey Bugaev
2024-01-04 22:47 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 08/23] hurd: Drop x86-specific assembly from init-first.c Sergey Bugaev
2024-01-04 22:48 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 09/23] hurd: Make init-first.c no longer x86-specific Sergey Bugaev
2024-01-04 22:48 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 10/23] hurd: Only init early static TLS if it's used to store stack or pointer guards Sergey Bugaev
2024-01-04 22:48 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 11/23] hurd: Initializy _dl_pagesize early in static builds Sergey Bugaev
2024-01-04 22:48 ` Samuel Thibault
2024-01-03 17:14 ` [RFC PATCH 12/23] aarch64: Make cpu-features definitions not Linux-specific Sergey Bugaev
2024-01-04 22:48 ` Samuel Thibault
2024-01-03 17:14 ` Sergey Bugaev [this message]
2024-01-03 17:14 ` [RFC PATCH 14/23] aarch64: Allow building without kernel support for BTI Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 15/23] mach: Add a basic AArch64 port Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 16/23] hurd: " Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 17/23] hurd: Implement TLS on AArch64 Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 18/23] hurd: Implement longjmp for AArch64 Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 19/23] Add FPE_FLTIDO Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 20/23] hurd: Add an AArch64 signal implementation Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 21/23] htl: Implement some support for TLS_DTV_AT_TP Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 22/23] htl: Add an AArch64 implementation Sergey Bugaev
2024-01-03 17:14 ` [RFC PATCH 23/23] hurd: Add expected aarch64-gnu abistlists Sergey Bugaev
2024-01-03 17:30 ` [RFC PATCH 00/23] aarch64-gnu port Joseph Myers
2024-01-03 17:57 ` Sergey Bugaev
2024-03-11 16:10 ` Florian Weimer
2024-03-11 13:47 ` H.J. Lu
2024-03-11 15:38 ` Sergey Bugaev
2024-03-11 14:14 ` Maxim Kuvyrkov
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