[v2,15/23] linux: Use generic __syscall_error for microblaze
Commit Message
Although the auto-generated syscall sets errno directly for dynamic
case, using a function call generates more compact code:
--- sizes-microblaze-linux-gnu.inline
+++ sizes-microblaze-linux-gnu.outline
text data bss dec hex filename
-1835305 52738 9216 1897259 1cf32b libc.so
- 188644 7236 176 196056 2fdd8 elf/ld.so
- 121772 5872 8356 136000 21340 nptl/libpthread.so
- 30836 1724 160 32720 7fd0 rt/librt.so
+1831025 52714 9216 1892955 1ce25b libc.so
+ 188904 7240 176 196320 2fee0 elf/ld.so
+ 121540 5864 8356 135760 21250 nptl/libpthread.so
+ 30640 1720 160 32520 7f08 rt/librt.so
Checked with a cross make check for microblaze-linux-gnu.
---
sysdeps/unix/sysv/linux/microblaze/Makefile | 6 ---
.../sysv/linux/microblaze/syscall_error.h | 25 ++++++++++++
sysdeps/unix/sysv/linux/microblaze/sysdep.S | 39 -------------------
3 files changed, 25 insertions(+), 45 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/microblaze/syscall_error.h
delete mode 100644 sysdeps/unix/sysv/linux/microblaze/sysdep.S
@@ -1,9 +1,3 @@
ifeq ($(subdir),resource)
sysdep_routines += backtrace_linux
endif
-
-ifeq ($(subdir),nptl)
-# pull in __syscall_error routine
-libpthread-routines += sysdep
-libpthread-shared-only-routines += sysdep
-endif
new file mode 100644
@@ -0,0 +1,25 @@
+/* Linux wrappers for setting errno. Microblaze 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
+ 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 _SYSCALL_ERROR_H
+#define _SYSCALL_ERROR_H
+
+#define SYSCALL_ERROR_FUNC 1
+#define SYSCALL_ERROR_FUNC_ATTR
+
+#endif
deleted file mode 100644
@@ -1,39 +0,0 @@
-/* Copyright (C) 2009-2020 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
- 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/>. */
-
-#include <sysdep.h>
-
-
-/* The following code is only used in the shared library when we
- compile the reentrant version. Otherwise each system call defines
- each own version. */
-
-#ifndef PIC
-
-/* The syscall stubs jump here when they detect an error. */
-
-# undef CALL_MCOUNT
-# define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %d0. */
-
- .text
-ENTRY (__syscall_error)
- rsubk r3,r3,r0
- rtsd r15,8
- addik r3,r0,-1 /* delay slot. */
-END (__syscall_error)
-#endif /* PIC. */