[PATCH 21/27] [AARCH64] ILP32: introduce syscalls that pass off_t

From: Yury Norov
Date: Tue Jun 21 2016 - 01:46:46 EST

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From: Yury Norov <yury.norov@xxxxxxxxx>

ILP32 has 64-bit off_t, to follow modern requirements.
But kernel clears top-halves of input registers. It means
we have to pass corresponding arguments in a pair, like
aarch32 does. In this patch all affected syscalls are redefined.
Most of them are taken from arm code.

Signed-off-by: Yury Norov <ynorov@xxxxxxxxxxxxxxxxxx>
---
sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c | 31 +++++++++++++++++++
.../unix/sysv/linux/aarch64/ilp32/fallocate64.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate.c | 1 +
.../unix/sysv/linux/aarch64/ilp32/ftruncate64.c | 4 +++
sysdeps/unix/sysv/linux/aarch64/ilp32/llseek.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/lseek.c | 36 ++++++++++++++++++++++
sysdeps/unix/sysv/linux/aarch64/ilp32/mmap.c | 1 +
.../unix/sysv/linux/aarch64/ilp32/posix_fadvise.c | 1 +
.../sysv/linux/aarch64/ilp32/posix_fadvise64.c | 2 ++
sysdeps/unix/sysv/linux/aarch64/ilp32/pread.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c | 5 +++
sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c | 5 +++
sysdeps/unix/sysv/linux/aarch64/ilp32/readahead.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/truncate.c | 1 +
sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c | 4 +++
16 files changed, 96 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate64.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate64.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/llseek.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/lseek.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/mmap.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise64.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/pread.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/readahead.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/truncate.c
create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c

diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c
new file mode 100644
index 0000000..4951d06
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 2007-2016 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 <errno.h>
+#include <fcntl.h>
+#include <sysdep-cancel.h>
+
+
+/* Reserve storage for the data of the file associated with FD. */
+int
+fallocate (int fd, int mode, __off_t offset, __off_t len)
+{
+ return SYSCALL_CANCEL (fallocate, fd, mode,
+ __LONG_LONG_PAIR (offset >> 32, offset),
+ __LONG_LONG_PAIR (len >> 32, len));
+}
+weak_alias (fallocate, fallocate64)
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate64.c
new file mode 100644
index 0000000..f27735a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate64.c
@@ -0,0 +1 @@
+/* See sysdeps/unix/sysv/linux/aarch64/ilp32/fallocate.c */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate.c
new file mode 100644
index 0000000..fb5b598
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate.c
@@ -0,0 +1 @@
+/* See sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncatei64.c */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate64.c
new file mode 100644
index 0000000..bd0f5fe
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/ftruncate64.c
@@ -0,0 +1,4 @@
+#include <sysdeps/unix/sysv/linux/arm/ftruncate64.c>
+
+weak_alias (__ftruncate64, __ftruncate)
+weak_alias (__ftruncate64, ftruncate)
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/llseek.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/llseek.c
new file mode 100644
index 0000000..b00ca27
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/llseek.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/generic/wordsize-32/llseek.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/lseek.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/lseek.c
new file mode 100644
index 0000000..6e00863
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/lseek.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Chris Metcalf <cmetcalf@xxxxxxxxxx>, 2011.
+
+ 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 <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+off_t
+__lseek (int fd, off_t offset, int whence)
+{
+ loff_t res;
+ int rc = INLINE_SYSCALL (_llseek, 5, fd, (off_t) (offset >> 32),
+ (off_t) offset, &res, whence);
+ return rc ?: res;
+}
+libc_hidden_def (__lseek)
+weak_alias (__lseek, lseek)
+strong_alias (__lseek, __libc_lseek)
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/mmap.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/mmap.c
new file mode 100644
index 0000000..813ab64
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/mmap.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/arm/mmap.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise.c
new file mode 100644
index 0000000..4430e6e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/arm/posix_fadvise.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise64.c
new file mode 100644
index 0000000..596c6a1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/posix_fadvise64.c
@@ -0,0 +1,2 @@
+#define __NR_arm_fadvise64_64 __NR_fadvise64_64
+#include <sysdeps/unix/sysv/linux/arm/posix_fadvise64.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/pread.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/pread.c
new file mode 100644
index 0000000..96b7ccb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/pread.c
@@ -0,0 +1 @@
+/* See sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c
new file mode 100644
index 0000000..7637028
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/pread64.c
@@ -0,0 +1,5 @@
+#include <sysdeps/unix/sysv/linux/arm/pread64.c>
+
+strong_alias (__libc_pread64, __libc_pread)
+strong_alias (__libc_pread64, __pread)
+weak_alias (__libc_pread64, pread)
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite.c
new file mode 100644
index 0000000..ddadc61
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite.c
@@ -0,0 +1 @@
+/* See sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c
new file mode 100644
index 0000000..2089a05
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/pwrite64.c
@@ -0,0 +1,5 @@
+#include <sysdeps/unix/sysv/linux/arm/pwrite64.c>
+
+weak_alias (__libc_pwrite64, __libc_pwrite)
+weak_alias (__libc_pwrite64, __pwrite)
+weak_alias (__libc_pwrite64, pwrite)
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/readahead.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/readahead.c
new file mode 100644
index 0000000..80170c3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/readahead.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/arm/readahead.c>
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate.c
new file mode 100644
index 0000000..23548a5
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate.c
@@ -0,0 +1 @@
+/* See sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c b/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c
new file mode 100644
index 0000000..56cb37f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/truncate64.c
@@ -0,0 +1,4 @@
+#include <sysdeps/unix/sysv/linux/arm/truncate64.c>
+
+weak_alias (truncate64, __truncate)
+weak_alias (truncate64, truncate)
--
2.7.4

Next message: Yury Norov: "[PATCH 13/27] [AARCH64] Set up wordsize for ILP32."
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Next in thread: Joseph Myers: "Re: [PATCH 21/27] [AARCH64] ILP32: introduce syscalls that pass off_t"
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