[17/23] linux: Use generic __syscall_error for ia64
Commit Message
Although the auto-generated syscall issues __syscall_errno, using
an inline function generates much more compact code:
--- sizes-ia64-linux-gnu.inline
+++ sizes-ia64-linux-gnu.outline
text data bss dec hex filename
-2940053 20776 14424 2975253 2d6615 libc.so
- 301887 23190 1968 327045 4fd85 elf/ld.so
- 203203 2472 16640 222315 3646b nptl/libpthread.so
- 47153 1764 2272 51189 c7f5 rt/librt.so
+2947445 20776 14424 2982645 2d82f5 libc.so
+ 302591 23190 1968 327749 50045 elf/ld.so
+ 204987 2472 16640 224099 36b63 nptl/libpthread.so
+ 47609 1764 2272 51645 c9bd rt/librt.so
Checked with a cross make check for ia64-linux-gnu.
---
sysdeps/ia64/nptl/Makefile | 5 --
sysdeps/unix/sysv/linux/ia64/Makefile | 5 --
sysdeps/unix/sysv/linux/ia64/rt-sysdep.S | 1 -
sysdeps/unix/sysv/linux/ia64/syscall_error.c | 3 +
sysdeps/unix/sysv/linux/ia64/sysdep.S | 58 --------------------
5 files changed, 3 insertions(+), 69 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/ia64/rt-sysdep.S
create mode 100644 sysdeps/unix/sysv/linux/ia64/syscall_error.c
delete mode 100644 sysdeps/unix/sysv/linux/ia64/sysdep.S
@@ -18,8 +18,3 @@
ifeq ($(subdir),csu)
gen-as-const-headers += tcb-offsets.sym
endif
-
-ifeq ($(subdir),nptl)
-libpthread-routines += sysdep
-libpthread-shared-only-routines += sysdep
-endif
@@ -17,11 +17,6 @@ ifeq ($(subdir),elf)
sysdep-dl-routines += dl-static
endif
-ifeq ($(subdir),rt)
-librt-routines += rt-sysdep
-librt-shared-only-routines += rt-sysdep
-endif
-
ifeq ($(subdir),nptl)
libpthread-sysdep_routines += __ia64_longjmp unwind_longjmp __sigstack_longjmp
endif
deleted file mode 100644
@@ -1 +0,0 @@
-#include <sysdep.S>
new file mode 100644
@@ -0,0 +1,3 @@
+/* The auto-generated syscalls calls __syscall_error. */
+#define SYSCALL_ERROR_FUNC
+#include <sysdeps/unix/sysv/linux/syscall_error.c>
deleted file mode 100644
@@ -1,58 +0,0 @@
-/* Copyright (C) 1999-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
-
- 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>
-#include <features.h>
-#include <tls.h>
-
-ENTRY(__syscall_error)
-#if RTLD_PRIVATE_ERRNO
- /*
- * Note that the gp has to be set properly for this to work.
- * As long as all syscalls are in the same load unit
- * (executable or shared library) as this routine, we should
- * be fine. Otherwise, we would have to first load the global
- * pointer register from __gp.
- */
- addl r2=@gprel(rtld_errno),gp
- ;;
- st4 [r2]=r8
- mov r8=-1
-#else
-# if IS_IN (libc)
-# define SYSCALL_ERROR_ERRNO __libc_errno
-# else
-# define SYSCALL_ERROR_ERRNO errno
-# endif
- addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
- ld8 r2=[r2]
- mov r3=r8;;
- mov r8=-1
- add r2=r2,r13;;
- st4 [r2]=r3
-#endif
- ret // ret is #define'd in syscall.h!
-END(__syscall_error)
-
-ENTRY(__ia64_syscall)
- mov r15=r37 /* syscall number */
- break __IA64_BREAK_SYSCALL
- cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */
-(p6) br.cond.spnt.few __syscall_error
- ret
-PSEUDO_END(__ia64_syscall)