Add x32 llseek.S

4 files changed, 91 insertions, 15 deletions

diff --git a/ChangeLog b/ChangeLog
index f753baa5e9..f6288e1b58 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2012-05-21  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* sysdeps/unix/sysv/linux/x86_64/sysdep.h (SYSCALL_SET_ERRNO):
+	New macro.  Use R*LP on int and pointer.
+	(SYSCALL_ERROR_HANDLER): Use SYSCALL_SET_ERRNO.
+	* sysdeps/unix/sysv/linux/x86_64/x32/llseek.S: New file.
+	* sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h: Likewise.
+
 	* sysdeps/gnu/bits/utmp.h (struct lastlog): Check
 	[__WORDSIZE_TIME64_COMPAT32] instead of
 	[__WORDSIZE == 64 && __WORDSIZE_COMPAT32].
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index aae4cb01b4..3f5bdd2ac3 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -112,30 +112,32 @@
 
 # define ret_ERRVAL ret
 
-# ifndef PIC
-#  define SYSCALL_ERROR_HANDLER	/* Nothing here; code in sysdep.S is used.  */
-# elif RTLD_PRIVATE_ERRNO
-#  define SYSCALL_ERROR_HANDLER			\
-0:						\
-  leaq rtld_errno(%rip), %rcx;			\
+# if defined PIC && defined RTLD_PRIVATE_ERRNO
+#  define SYSCALL_SET_ERRNO			\
+  lea rtld_errno(%rip), %RCX_LP;		\
   xorl %edx, %edx;				\
-  subq %rax, %rdx;				\
-  movl %edx, (%rcx);				\
-  orq $-1, %rax;				\
-  jmp L(pseudo_end);
+  sub %RAX_LP, %RDX_LP;				\
+  movl %edx, (%rcx)
 # else
 #  ifndef NOT_IN_libc
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
 #  endif
-#  define SYSCALL_ERROR_HANDLER			\
-0:						\
+#  define SYSCALL_SET_ERRNO			\
   movq SYSCALL_ERROR_ERRNO@GOTTPOFF(%rip), %rcx;\
   xorl %edx, %edx;				\
-  subq %rax, %rdx;				\
-  movl %edx, %fs:(%rcx);			\
-  orq $-1, %rax;				\
+  sub %RAX_LP, %RDX_LP;				\
+  movl %edx, %fs:(%rcx)
+# endif
+
+# ifndef PIC
+#  define SYSCALL_ERROR_HANDLER	/* Nothing here; code in sysdep.S is used.  */
+# else
+#  define SYSCALL_ERROR_HANDLER			\
+0:						\
+  SYSCALL_SET_ERRNO;				\
+  or $-1, %RAX_LP;				\
   jmp L(pseudo_end);
 # endif	/* PIC */
 
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/llseek.S b/sysdeps/unix/sysv/linux/x86_64/x32/llseek.S
new file mode 100644
index 0000000000..bec302e9a0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/llseek.S
@@ -0,0 +1,43 @@
+/* The lseek system call with 64-bit offset.  Linux/x32 version.
+   Copyright (C) 2012 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep-cancel.h>
+
+/* Return -1LL in a full 64 bits.  */
+#undef SYSCALL_ERROR_HANDLER
+#define SYSCALL_ERROR_HANDLER	\
+0:				\
+	SYSCALL_SET_ERRNO;	\
+	orq $-1, %rax;		\
+	ret;
+
+/* Always use our own error handler.  */
+#undef SYSCALL_ERROR_LABEL
+#define SYSCALL_ERROR_LABEL 0f
+
+PSEUDO (__libc_lseek64, lseek, 3)
+	ret
+PSEUDO_END (__libc_lseek64)
+
+weak_alias (__libc_lseek64, __lseek64)
+libc_hidden_weak (__lseek64)
+weak_alias (__libc_lseek64, lseek64)
+libc_hidden_weak (lseek64)
+weak_alias (__libc_lseek64, __lseek)
+libc_hidden_weak (__lseek)
+weak_alias (__libc_lseek64, lseek)
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h
new file mode 100644
index 0000000000..35e4c84c13
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h
@@ -0,0 +1,25 @@
+/* Copyright (C) 2012 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
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LINUX_X32_SYSDEP_H
+#define _LINUX_X32_SYSDEP_H 1
+
+/* There is some commonality.  */
+#include <sysdeps/unix/sysv/linux/x86_64/sysdep.h>
+#include <sysdeps/x86_64/x32/sysdep.h>
+
+#endif /* linux/x86_64/x32/sysdep.h */