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[v2,05/23] linux: Use generic __syscall_error for aarch64

Message ID 20201113165837.121629-6-adhemerval.zanella@linaro.org
State New
Headers show
Series Simplify internal Linux syscall | expand

Commit Message

Adhemerval Zanella Nov. 13, 2020, 4:58 p.m. UTC
The auto-generated syscalls calls the __syscall_error, although setting
using inline function generates slight less code:

--- sizes-aarch64-linux-gnu.outline
+++ sizes-aarch64-linux-gnu.inline
    text           data     bss     dec     hex filename
 1388874          19096   14520 1422490  15b49a libc.so
- 138509           7136     344  145989   23a45 elf/ld.so
-  98439           1636   16656  116731   1c7fb nptl/libpthread.so
-  23942           1236     248   25426    6352 rt/librt.so
+ 138449           7136     344  145929   23a09 elf/ld.so
+  98567           1636   16656  116859   1c87b nptl/libpthread.so
+  23918           1236     248   25402    633a rt/librt.so

Checked on aarch64-linux-gnu.
---
 .../aarch64/{sysdep.c => syscall_error.h}     | 23 +++++++------------
 1 file changed, 8 insertions(+), 15 deletions(-)
 rename sysdeps/unix/sysv/linux/aarch64/{sysdep.c => syscall_error.h} (63%)
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Patch

diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep.c b/sysdeps/unix/sysv/linux/aarch64/syscall_error.h
similarity index 63%
rename from sysdeps/unix/sysv/linux/aarch64/sysdep.c
rename to sysdeps/unix/sysv/linux/aarch64/syscall_error.h
index 6b88f3484f..a45e02dbe4 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep.c
+++ b/sysdeps/unix/sysv/linux/aarch64/syscall_error.h
@@ -1,5 +1,5 @@ 
-/* Copyright (C) 2011-2020 Free Software Foundation, Inc.
-
+/* Linux wrappers for setting errno.  AArch64 version.
+   Copyright (C) 2020 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
@@ -13,20 +13,13 @@ 
    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
+   License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
+#ifndef _SYSCALL_ERROR_H
+#define _SYSCALL_ERROR_H
 
-long __syscall_error (long err);
-hidden_proto (__syscall_error)
+#define SYSCALL_ERROR_FUNC        1
+#define SYSCALL_ERROR_FUNC_ATTR
 
-/* This routine is jumped to by all the syscall handlers, to stash
-   an error number into errno.  */
-long
-__syscall_error (long err)
-{
-  __set_errno (- err);
-  return -1;
-}
-hidden_def (__syscall_error)
+#endif