Removing __kernel_old_uid_t, git_t, dev_t

Removing __kernel_old_uid_t, git_t, dev_t

[Michal Simek]

Hi Arnd,

on the base our discussion some month ago you recommend me to remove old
kernel types.
I did some tests and I found that first step must be to remove all
references in linux kernel code because of compilation error.
Just perform grep to include linux folder.

I think we should create this patch first and then I can remove them
from MB posix_types.h.

Do you agree with me?

Thanks,
Michal

-- 
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PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663

Re: Removing __kernel_old_uid_t, git_t, dev_t

[Arnd Bergmann]

On Monday 30 March 2009, Michal Simek wrote:

> on the base our discussion some month ago you recommend me to remove old
> kernel types.
> I did some tests and I found that first step must be to remove all
> references in linux kernel code because of compilation error.
> Just perform grep to include linux folder.
> 
> I think we should create this patch first and then I can remove them
> from MB posix_types.h.
> 
> Do you agree with me?

I've experimented with this in the meantime, and concluded that we can't
easily remove them, but should rather define them to the current
ones.

How does this look?
---
Provide generic asm/types.h and asm/posix_types.h

For new architectures, the base data types should always be
the same, so let's have a version in asm/generic that can be
used by all of them out of the box. Other architectures can
simplify their code by #including them after defining their
platform specific types.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
new file mode 100644
index 0000000..4772f74
--- /dev/null
+++ b/include/asm-generic/posix_types.h
@@ -0,0 +1,162 @@
+#ifndef __ASM_GENERIC_POSIX_TYPES_H
+#define __ASM_GENERIC_POSIX_TYPES_H
+
+#include <asm/types.h>
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.
+ *
+ * First the types that are often defined in different ways across
+ * architectures, so that you can override them.
+ */
+
+#ifndef __kernel_ino_t
+typedef unsigned long	__kernel_ino_t;
+#endif
+
+#ifndef __kernel_mode_t
+typedef unsigned int	__kernel_mode_t;
+#endif
+
+#ifndef __kernel_nlink_t
+typedef unsigned long	__kernel_nlink_t;
+#endif
+
+#ifndef __kernel_pid_t
+typedef int		__kernel_pid_t;
+#endif
+
+#ifndef __kernel_ipc_pid_t
+typedef int		__kernel_ipc_pid_t;
+#endif
+
+#ifndef __kernel_uid_t
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+#endif
+
+#ifndef __kernel_suseconds_t
+typedef long		__kernel_suseconds_t;
+#endif
+
+#ifndef __kernel_daddr_t
+typedef int		__kernel_daddr_t;
+#endif
+
+#ifndef __kernel_uid32_t
+typedef __kernel_uid_t	__kernel_uid32_t;
+typedef __kernel_gid_t	__kernel_gid32_t;
+#endif
+
+#ifndef __kernel_old_uid_t
+typedef __kernel_uid_t	__kernel_old_uid_t;
+typedef __kernel_gid_t	__kernel_old_gid_t;
+#endif
+
+#ifndef __kernel_old_dev_t
+typedef unsigned int	__kernel_old_dev_t;
+#endif
+
+#ifndef __kernel_size_t
+#if __BITS_PER_LONG != 64
+typedef unsigned int	__kernel_size_t;
+typedef int		__kernel_ssize_t;
+typedef int		__kernel_ptrdiff_t;
+#else
+typedef unsigned long	__kernel_size_t;
+typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+#endif
+#endif
+
+/*
+ * anything below here should be completely generic
+ */
+typedef long		__kernel_off_t;
+typedef long long	__kernel_loff_t;
+typedef long		__kernel_time_t;
+typedef long		__kernel_clock_t;
+typedef int		__kernel_timer_t;
+typedef int		__kernel_clockid_t;
+typedef char *		__kernel_caddr_t;
+typedef unsigned short	__kernel_uid16_t;
+typedef unsigned short	__kernel_gid16_t;
+
+typedef struct {
+	int	val[2];
+} __kernel_fsid_t;
+
+#ifdef __KERNEL__
+
+#undef __FD_SET
+static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
+}
+
+#undef __FD_CLR
+static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
+}
+
+#undef __FD_ISSET
+static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
+}
+
+/*
+ * This will unroll the loop for the normal constant case (8 ints,
+ * for a 256-bit fd_set)
+ */
+#undef __FD_ZERO
+static inline void __FD_ZERO(__kernel_fd_set *__p)
+{
+	unsigned long *__tmp = __p->fds_bits;
+	int __i;
+
+	if (__builtin_constant_p(__FDSET_LONGS)) {
+		switch (__FDSET_LONGS) {
+		case 16:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			__tmp[ 8] = 0; __tmp[ 9] = 0;
+			__tmp[10] = 0; __tmp[11] = 0;
+			__tmp[12] = 0; __tmp[13] = 0;
+			__tmp[14] = 0; __tmp[15] = 0;
+			return;
+
+		case 8:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			return;
+
+		case 4:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			return;
+		}
+	}
+	__i = __FDSET_LONGS;
+	while (__i) {
+		__i--;
+		*__tmp = 0;
+		__tmp++;
+	}
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_GENERIC_POSIX_TYPES_H */
diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
new file mode 100644
index 0000000..5841716
--- /dev/null
+++ b/include/asm-generic/types.h
@@ -0,0 +1,56 @@
+#ifndef __ASM_GENERIC_TYPES_H
+#define __ASM_GENERIC_TYPES_H
+
+/*
+ * int-ll64 is used on all 32 bit architectures and on x86-64,
+ * so use it as a reasonable default.
+ */
+#include <asm-generic/int-ll64.h>
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * There seems to be no way of detecting this automatically from user
+ * space, so 64 bit architectures should override this in their types.h.
+ */
+#ifndef __BITS_PER_LONG
+#define __BITS_PER_LONG 32
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+#ifdef CONFIG_64BIT
+#define BITS_PER_LONG 64
+#else
+#define BITS_PER_LONG 32
+#endif /* CONFIG_64BIT */
+
+#if BITS_PER_LONG != __BITS_PER_LONG
+#error cannot determine word size
+#endif
+
+#ifndef __ASSEMBLY__
+
+/*
+ * DMA addresses may be larger than pointers, but not smaller.
+ * Do not define the dma64_addr_t type, which never really
+ * worked.
+ */
+#if defined(CONFIG_64BIT) || defined(CONFIG_PHYS_64BIT)
+typedef u64 dma_addr_t;
+#else
+typedef u32 dma_addr_t;
+#endif /* 64 bit DMA pointer */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_GENERIC_TYPES_H */

Re: Removing __kernel_old_uid_t, git_t, dev_t

[Geert Uytterhoeven]

On Mon, Mar 30, 2009 at 15:58, Arnd Bergmann <arnd@arndb.de> wrote:
> diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
> new file mode 100644
> index 0000000..5841716
> --- /dev/null
> +++ b/include/asm-generic/types.h
> @@ -0,0 +1,56 @@
> +#ifndef __ASM_GENERIC_TYPES_H
> +#define __ASM_GENERIC_TYPES_H
> +
> +/*
> + * int-ll64 is used on all 32 bit architectures and on x86-64,
> + * so use it as a reasonable default.
> + */
> +#include <asm-generic/int-ll64.h>
> +

Most 64-bit archs have been migrated to ll64 by now.
Alpha, ia64, and mips64 are the remaining exceptions.

> +/*
> + * DMA addresses may be larger than pointers, but not smaller.
> + * Do not define the dma64_addr_t type, which never really
> + * worked.
> + */
> +#if defined(CONFIG_64BIT) || defined(CONFIG_PHYS_64BIT)
> +typedef u64 dma_addr_t;
> +#else
> +typedef u32 dma_addr_t;
> +#endif /* 64 bit DMA pointer */

Is there any specific reason why dma_addr_t is in <asm/types.h>, while
phys_addr_t is in
<linux/types.h>?

Furthermore, CONFIG_PHYS_64BIT is used on PPC only. Probably it should be
replaced by CONFIG_PHYS_ADDR_T_64BIT, which is always set if CONFIG_64BIT,
so the #ifdef above becomes even simpler?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: Removing __kernel_old_uid_t, git_t, dev_t

[Arnd Bergmann]

On Monday 30 March 2009, Geert Uytterhoeven wrote:
> On Mon, Mar 30, 2009 at 15:58, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:
> > +/*
> > + * int-ll64 is used on all 32 bit architectures and on x86-64,
> > + * so use it as a reasonable default.
> > + */
> > +#include <asm-generic/int-ll64.h>
> > +
> 
> Most 64-bit archs have been migrated to ll64 by now.
> Alpha, ia64, and mips64 are the remaining exceptions.

Right, the comment is stale.

> > +/*
> > + * DMA addresses may be larger than pointers, but not smaller.
> > + * Do not define the dma64_addr_t type, which never really
> > + * worked.
> > + */
> > +#if defined(CONFIG_64BIT) || defined(CONFIG_PHYS_64BIT)
> > +typedef u64 dma_addr_t;
> > +#else
> > +typedef u32 dma_addr_t;
> > +#endif /* 64 bit DMA pointer */
> 
> Is there any specific reason why dma_addr_t is in <asm/types.h>, while
> phys_addr_t is in
> <linux/types.h>?

dma_addr_t is a big mess that was traditionally defined per
architecture, in lots of wrong ways, including the misconception
of dma64_addr_t. Sparc64 still uses a 32 bit dma_addr_t, possibly
because it always uses an IOMMU (?). It can save some space in
scatterlists, but might come back to bite us if someone tries
to build a sparc64 system with actual 64-bit DMA.

phys_addr_t is a new definition that was added last August (after
I did my patch) by Jeremy Fitzhardinge and is for DMA purposes.

> Furthermore, CONFIG_PHYS_64BIT is used on PPC only. Probably it should be
> replaced by CONFIG_PHYS_ADDR_T_64BIT, which is always set if CONFIG_64BIT,
> so the #ifdef above becomes even simpler?

Yes, they could be consolidated now, which would make the default
dma_addr_t the same as phys_addr_t, with the possible exception of
sparc64.

	Arnd <><
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Re: Removing __kernel_old_uid_t, git_t, dev_t

[Arnd Bergmann]

On Monday 30 March 2009, Geert Uytterhoeven wrote:
> On Mon, Mar 30, 2009 at 15:58, Arnd Bergmann <arnd@arndb.de> wrote:
> > +/*
> > + * int-ll64 is used on all 32 bit architectures and on x86-64,
> > + * so use it as a reasonable default.
> > + */
> > +#include <asm-generic/int-ll64.h>
> > +
> 
> Most 64-bit archs have been migrated to ll64 by now.
> Alpha, ia64, and mips64 are the remaining exceptions.

Right, the comment is stale.

> > +/*
> > + * DMA addresses may be larger than pointers, but not smaller.
> > + * Do not define the dma64_addr_t type, which never really
> > + * worked.
> > + */
> > +#if defined(CONFIG_64BIT) || defined(CONFIG_PHYS_64BIT)
> > +typedef u64 dma_addr_t;
> > +#else
> > +typedef u32 dma_addr_t;
> > +#endif /* 64 bit DMA pointer */
> 
> Is there any specific reason why dma_addr_t is in <asm/types.h>, while
> phys_addr_t is in
> <linux/types.h>?

dma_addr_t is a big mess that was traditionally defined per
architecture, in lots of wrong ways, including the misconception
of dma64_addr_t. Sparc64 still uses a 32 bit dma_addr_t, possibly
because it always uses an IOMMU (?). It can save some space in
scatterlists, but might come back to bite us if someone tries
to build a sparc64 system with actual 64-bit DMA.

phys_addr_t is a new definition that was added last August (after
I did my patch) by Jeremy Fitzhardinge and is for DMA purposes.

> Furthermore, CONFIG_PHYS_64BIT is used on PPC only. Probably it should be
> replaced by CONFIG_PHYS_ADDR_T_64BIT, which is always set if CONFIG_64BIT,
> so the #ifdef above becomes even simpler?

Yes, they could be consolidated now, which would make the default
dma_addr_t the same as phys_addr_t, with the possible exception of
sparc64.

	Arnd <><

Re: Removing __kernel_old_uid_t, git_t, dev_t

[David Miller]

From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Date: Mon, 30 Mar 2009 17:17:56 +0200

> dma_addr_t is a big mess that was traditionally defined per
> architecture, in lots of wrong ways, including the misconception
> of dma64_addr_t. Sparc64 still uses a 32 bit dma_addr_t, possibly
> because it always uses an IOMMU (?). It can save some space in
> scatterlists, but might come back to bite us if someone tries
> to build a sparc64 system with actual 64-bit DMA.

There is no reason to use anything larger than a 32-bit DMA address
type on sparc64, and using 32-bit saves lots of space in many
data structures so I am unlikely to ever change this. :-)
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Re: Removing __kernel_old_uid_t, git_t, dev_t

[David Miller]

From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 30 Mar 2009 17:17:56 +0200

> dma_addr_t is a big mess that was traditionally defined per
> architecture, in lots of wrong ways, including the misconception
> of dma64_addr_t. Sparc64 still uses a 32 bit dma_addr_t, possibly
> because it always uses an IOMMU (?). It can save some space in
> scatterlists, but might come back to bite us if someone tries
> to build a sparc64 system with actual 64-bit DMA.

There is no reason to use anything larger than a 32-bit DMA address
type on sparc64, and using 32-bit saves lots of space in many
data structures so I am unlikely to ever change this. :-)

Re: Removing __kernel_old_uid_t, git_t, dev_t

[Arnd Bergmann]

On Monday 30 March 2009, David Miller wrote:
> There is no reason to use anything larger than a 32-bit DMA address
> type on sparc64, and using 32-bit saves lots of space in many
> data structures so I am unlikely to ever change this. :-)

Ok, fair enough. So I'll change my asm-generic/types.h to use

#ifndef dma_addr_t
#ifdef CONFIG_PHYS_ADDR_T_64BIT
typedef u64 dma_addr_t;
#else
typedef u32 dma_addr_t;
#endif /* CONFIG_PHYS_ADDR_T_64BIT */
#endif /* dma_addr_t */

If you eventually want to use the the generic version, you
just need to add

#define dma_addr_t dma_addr_t

before the #include. Or you just ignore the asm-generic version
and don't have to do anything.

	Arnd <><
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Re: Removing __kernel_old_uid_t, git_t, dev_t

[Arnd Bergmann]

On Monday 30 March 2009, David Miller wrote:
> There is no reason to use anything larger than a 32-bit DMA address
> type on sparc64, and using 32-bit saves lots of space in many
> data structures so I am unlikely to ever change this. :-)

Ok, fair enough. So I'll change my asm-generic/types.h to use

#ifndef dma_addr_t
#ifdef CONFIG_PHYS_ADDR_T_64BIT
typedef u64 dma_addr_t;
#else
typedef u32 dma_addr_t;
#endif /* CONFIG_PHYS_ADDR_T_64BIT */
#endif /* dma_addr_t */

If you eventually want to use the the generic version, you
just need to add

#define dma_addr_t dma_addr_t

before the #include. Or you just ignore the asm-generic version
and don't have to do anything.

	Arnd <><

[RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

I've spent more time on my asm-generic patches and believe I now
have an unistd.h implementation that can be used by the new
architectures (score and microblaze) so they don't have to go
through the error-prone process of coming up with their own lists.

It would be good if more people could in particular look over the
system call lists. I have left the syscalls that I think should
be dropped in #ifdef __ARCH_WANT_SYSCALL_{DEPRECATED,NO_AT,NO_FLAGS,OFF_T}
so that it becomes easy to reenable them temporarily while porting
the libc, and to easily see which ones get left out.

I have also changed checksyscalls.sh to stop complaining when
the old syscalls are not present.

Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
---
 include/asm-generic/posix_types.h |  162 ++++++
 include/asm-generic/types.h       |   63 ++
 include/asm-generic/unistd.h      |  829 +++++++++++++++++++++++++++++
 kernel/Makefile                   |    1 +
 kernel/syscall_table.c            |   12 +
 scripts/checksyscalls.sh          |   93 +++-
 6 files changed, 1157 insertions(+), 3 deletions(-)


diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
new file mode 100644
index 0000000..4772f74
--- /dev/null
+++ b/include/asm-generic/posix_types.h
@@ -0,0 +1,162 @@
+#ifndef __ASM_GENERIC_POSIX_TYPES_H
+#define __ASM_GENERIC_POSIX_TYPES_H
+
+#include <asm/types.h>
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.
+ *
+ * First the types that are often defined in different ways across
+ * architectures, so that you can override them.
+ */
+
+#ifndef __kernel_ino_t
+typedef unsigned long	__kernel_ino_t;
+#endif
+
+#ifndef __kernel_mode_t
+typedef unsigned int	__kernel_mode_t;
+#endif
+
+#ifndef __kernel_nlink_t
+typedef unsigned long	__kernel_nlink_t;
+#endif
+
+#ifndef __kernel_pid_t
+typedef int		__kernel_pid_t;
+#endif
+
+#ifndef __kernel_ipc_pid_t
+typedef int		__kernel_ipc_pid_t;
+#endif
+
+#ifndef __kernel_uid_t
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+#endif
+
+#ifndef __kernel_suseconds_t
+typedef long		__kernel_suseconds_t;
+#endif
+
+#ifndef __kernel_daddr_t
+typedef int		__kernel_daddr_t;
+#endif
+
+#ifndef __kernel_uid32_t
+typedef __kernel_uid_t	__kernel_uid32_t;
+typedef __kernel_gid_t	__kernel_gid32_t;
+#endif
+
+#ifndef __kernel_old_uid_t
+typedef __kernel_uid_t	__kernel_old_uid_t;
+typedef __kernel_gid_t	__kernel_old_gid_t;
+#endif
+
+#ifndef __kernel_old_dev_t
+typedef unsigned int	__kernel_old_dev_t;
+#endif
+
+#ifndef __kernel_size_t
+#if __BITS_PER_LONG != 64
+typedef unsigned int	__kernel_size_t;
+typedef int		__kernel_ssize_t;
+typedef int		__kernel_ptrdiff_t;
+#else
+typedef unsigned long	__kernel_size_t;
+typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+#endif
+#endif
+
+/*
+ * anything below here should be completely generic
+ */
+typedef long		__kernel_off_t;
+typedef long long	__kernel_loff_t;
+typedef long		__kernel_time_t;
+typedef long		__kernel_clock_t;
+typedef int		__kernel_timer_t;
+typedef int		__kernel_clockid_t;
+typedef char *		__kernel_caddr_t;
+typedef unsigned short	__kernel_uid16_t;
+typedef unsigned short	__kernel_gid16_t;
+
+typedef struct {
+	int	val[2];
+} __kernel_fsid_t;
+
+#ifdef __KERNEL__
+
+#undef __FD_SET
+static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
+}
+
+#undef __FD_CLR
+static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
+}
+
+#undef __FD_ISSET
+static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
+}
+
+/*
+ * This will unroll the loop for the normal constant case (8 ints,
+ * for a 256-bit fd_set)
+ */
+#undef __FD_ZERO
+static inline void __FD_ZERO(__kernel_fd_set *__p)
+{
+	unsigned long *__tmp = __p->fds_bits;
+	int __i;
+
+	if (__builtin_constant_p(__FDSET_LONGS)) {
+		switch (__FDSET_LONGS) {
+		case 16:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			__tmp[ 8] = 0; __tmp[ 9] = 0;
+			__tmp[10] = 0; __tmp[11] = 0;
+			__tmp[12] = 0; __tmp[13] = 0;
+			__tmp[14] = 0; __tmp[15] = 0;
+			return;
+
+		case 8:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			return;
+
+		case 4:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			return;
+		}
+	}
+	__i = __FDSET_LONGS;
+	while (__i) {
+		__i--;
+		*__tmp = 0;
+		__tmp++;
+	}
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_GENERIC_POSIX_TYPES_H */
diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
new file mode 100644
index 0000000..147b553
--- /dev/null
+++ b/include/asm-generic/types.h
@@ -0,0 +1,63 @@
+#ifndef _ASM_GENERIC_TYPES_H
+#define _ASM_GENERIC_TYPES_H
+
+/*
+ * int-ll64 is used practically everywhere now,
+ * so use it as a reasonable default.
+ */
+#include <asm-generic/int-ll64.h>
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * There seems to be no way of detecting this automatically from user
+ * space, so 64 bit architectures should override this in their types.h.
+ */
+#ifndef __BITS_PER_LONG
+#define __BITS_PER_LONG 32
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+#ifdef CONFIG_64BIT
+#define BITS_PER_LONG 64
+#else
+#define BITS_PER_LONG 32
+#endif /* CONFIG_64BIT */
+
+#if BITS_PER_LONG != __BITS_PER_LONG
+#error cannot determine word size
+#endif
+
+#ifndef __ASSEMBLY__
+
+/*
+ * DMA addresses may be very different from physical addresses
+ * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
+ * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
+ * physical addresses.
+ * This default defines dma_addr_t to have the same size as
+ * phys_addr_t, which is the most common way.
+ * Do not define the dma64_addr_t type, which never really
+ * worked.
+ */
+#ifndef dma_addr_t
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+typedef u64 dma_addr_t;
+#else
+typedef u32 dma_addr_t;
+#endif /* CONFIG_PHYS_ADDR_T_64BIT */
+#endif /* dma_addr_t */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_GENERIC_TYPES_H */
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
new file mode 100644
index 0000000..9c27fe0
--- /dev/null
+++ b/include/asm-generic/unistd.h
@@ -0,0 +1,829 @@
+#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
+#define _ASM_GENERIC_UNISTD_H
+
+/* need types.h for __BITS_PER_LONG */
+#include <linux/types.h>
+
+/*
+ * This file contains the system call numbers, based on the
+ * layout of the x86-64 architecture, which embeds the
+ * pointer to the syscall in the table.
+ *
+ * As a basic principle, no duplication of functionality
+ * should be added, e.g. we don't use lseek when llseek
+ * is present. New architectures should use this file
+ * and implement the less feature-full calls in user space.
+ *
+ * This file version is for review only, once the set of
+ * syscalls that are required has been determined, the
+ * __LINE__ numbers will be replaced with contiguous
+ * numbers for the syscalls.
+ */
+
+#ifndef __SYSCALL
+#define __SYSCALL(x,y)
+#endif
+
+#if __BITS_PER_LONG == 32
+#define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _32)
+#else
+#define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _64)
+#endif
+
+#define __NR_io_setup __LINE__
+__SYSCALL(__NR_io_setup, sys_io_setup)
+#define __NR_io_destroy __LINE__
+__SYSCALL(__NR_io_destroy, sys_io_destroy)
+#define __NR_io_submit __LINE__
+__SYSCALL(__NR_io_submit, sys_io_submit)
+#define __NR_io_cancel __LINE__
+__SYSCALL(__NR_io_cancel, sys_io_cancel)
+#define __NR_io_getevents __LINE__
+__SYSCALL(__NR_io_getevents, sys_io_getevents)
+
+/* fs/xattr.c */
+#define __NR_setxattr __LINE__
+__SYSCALL(__NR_setxattr, sys_setxattr)
+#define __NR_lsetxattr __LINE__
+__SYSCALL(__NR_lsetxattr, sys_lsetxattr)
+#define __NR_fsetxattr __LINE__
+__SYSCALL(__NR_fsetxattr, sys_fsetxattr)
+#define __NR_getxattr __LINE__
+__SYSCALL(__NR_getxattr, sys_getxattr)
+#define __NR_lgetxattr __LINE__
+__SYSCALL(__NR_lgetxattr, sys_lgetxattr)
+#define __NR_fgetxattr __LINE__
+__SYSCALL(__NR_fgetxattr, sys_fgetxattr)
+#define __NR_listxattr __LINE__
+__SYSCALL(__NR_listxattr, sys_listxattr)
+#define __NR_llistxattr __LINE__
+__SYSCALL(__NR_llistxattr, sys_llistxattr)
+#define __NR_flistxattr __LINE__
+__SYSCALL(__NR_flistxattr, sys_flistxattr)
+#define __NR_removexattr __LINE__
+__SYSCALL(__NR_removexattr, sys_removexattr)
+#define __NR_lremovexattr __LINE__
+__SYSCALL(__NR_lremovexattr, sys_lremovexattr)
+#define __NR_fremovexattr __LINE__
+__SYSCALL(__NR_fremovexattr, sys_fremovexattr)
+
+/* fs/dcache.c */
+#define __NR_getcwd __LINE__
+__SYSCALL(__NR_getcwd, sys_getcwd)
+
+/* fs/cookies.c */
+#define __NR_lookup_dcookie __LINE__
+__SYSCALL(__NR_lookup_dcookie, sys_lookup_dcookie)
+
+/* fs/eventfd.c */
+#define __NR_eventfd2 __LINE__
+__SYSCALL(__NR_eventfd2, sys_eventfd2)
+
+/* fs/eventpoll.c */
+#define __NR_epoll_create1 __LINE__
+__SYSCALL(__NR_epoll_create1, sys_epoll_create1)
+#define __NR_epoll_ctl __LINE__
+__SYSCALL(__NR_epoll_ctl, sys_epoll_ctl)
+#define __NR_epoll_pwait __LINE__
+__SYSCALL(__NR_epoll_pwait, sys_epoll_pwait)
+
+/* fs/fcntl.c */
+#define __NR_dup __LINE__
+__SYSCALL(__NR_dup, sys_dup)
+#define __NR_dup3 __LINE__
+__SYSCALL(__NR_dup3, sys_dup3)
+#define __NR3264_fcntl __LINE__
+__SC_3264(__NR3264_fcntl, sys_fcntl64, sys_fcntl)
+
+/* fs/inotify_user.c */
+#define __NR_inotify_init1 __LINE__
+__SYSCALL(__NR_inotify_init1, sys_inotify_init1)
+#define __NR_inotify_add_watch __LINE__
+__SYSCALL(__NR_inotify_add_watch, sys_inotify_add_watch)
+#define __NR_inotify_rm_watch __LINE__
+__SYSCALL(__NR_inotify_rm_watch, sys_inotify_rm_watch)
+
+/* fs/ioctl.c */
+#define __NR_ioctl __LINE__
+__SYSCALL(__NR_ioctl, sys_ioctl)
+
+/* fs/ioprio.c */
+#define __NR_ioprio_set __LINE__
+__SYSCALL(__NR_ioprio_set, sys_ioprio_set)
+#define __NR_ioprio_get __LINE__
+__SYSCALL(__NR_ioprio_get, sys_ioprio_get)
+
+/* fs/locks.c */
+#define __NR_flock __LINE__
+__SYSCALL(__NR_flock, sys_flock)
+
+/* fs/namei.c */
+#define __NR_mknodat __LINE__
+__SYSCALL(__NR_mknodat, sys_mknodat)
+#define __NR_mkdirat __LINE__
+__SYSCALL(__NR_mkdirat, sys_mkdirat)
+#define __NR_unlinkat __LINE__
+__SYSCALL(__NR_unlinkat, sys_unlinkat)
+#define __NR_symlinkat __LINE__
+__SYSCALL(__NR_symlinkat, sys_symlinkat)
+#define __NR_linkat __LINE__
+__SYSCALL(__NR_linkat, sys_linkat)
+#define __NR_renameat __LINE__
+__SYSCALL(__NR_renameat, sys_renameat)
+
+/* fs/namespace.c */
+#define __NR_umount2 __LINE__
+__SYSCALL(__NR_umount2, sys_umount)
+#define __NR_mount __LINE__
+__SYSCALL(__NR_mount, sys_mount)
+#define __NR_pivot_root __LINE__
+__SYSCALL(__NR_pivot_root, sys_pivot_root)
+
+/* fs/nfsctl.c */
+#define __NR_nfsservctl __LINE__
+__SYSCALL(__NR_nfsservctl, sys_nfsservctl)
+
+/* fs/open.c */
+#define __NR3264_statfs __LINE__
+__SC_3264(__NR3264_statfs, sys_statfs64, sys_statfs)
+#define __NR3264_fstatfs __LINE__
+__SC_3264(__NR3264_fstatfs, sys_fstatfs64, sys_fstatfs)
+#define __NR3264_truncate __LINE__
+__SC_3264(__NR3264_truncate, sys_truncate64, sys_truncate)
+#define __NR3264_ftruncate __LINE__
+__SC_3264(__NR3264_ftruncate, sys_ftruncate64, sys_ftruncate)
+
+#define __NR_fallocate __LINE__
+__SYSCALL(__NR_fallocate, sys_fallocate)
+#define __NR_faccessat __LINE__
+__SYSCALL(__NR_faccessat, sys_faccessat)
+#define __NR_chdir __LINE__
+__SYSCALL(__NR_chdir, sys_chdir)
+#define __NR_fchdir __LINE__
+__SYSCALL(__NR_fchdir, sys_fchdir)
+#define __NR_chroot __LINE__
+__SYSCALL(__NR_chroot, sys_chroot)
+#define __NR_fchmod __LINE__
+__SYSCALL(__NR_fchmod, sys_fchmod)
+#define __NR_fchmodat __LINE__
+__SYSCALL(__NR_fchmodat, sys_fchmodat)
+#define __NR_fchownat __LINE__
+__SYSCALL(__NR_fchownat, sys_fchownat)
+#define __NR_fchown __LINE__
+__SYSCALL(__NR_fchown, sys_fchown)
+#define __NR_openat __LINE__
+__SYSCALL(__NR_openat, sys_openat)
+#define __NR_close __LINE__
+__SYSCALL(__NR_close, sys_close)
+#define __NR_vhangup __LINE__
+__SYSCALL(__NR_vhangup, sys_vhangup)
+
+/* fs/pipe.c */
+#define __NR_pipe2 __LINE__
+__SYSCALL(__NR_pipe2, sys_pipe2)
+
+/* fs/quota.c */
+#define __NR_quotactl __LINE__
+__SYSCALL(__NR_quotactl, sys_quotactl)
+
+/* fs/readdir.c */
+#define __NR3264_getdents __LINE__
+__SC_3264(__NR3264_getdents, sys_getdents64, sys_getdents)
+
+/* fs/read_write.c */
+#define __NR3264_lseek __LINE__
+__SC_3264(__NR3264_lseek, sys_llseek, sys_lseek)
+#define __NR_read __LINE__
+__SYSCALL(__NR_read, sys_read)
+#define __NR_readv __LINE__
+__SYSCALL(__NR_readv, sys_readv)
+#define __NR_write __LINE__
+__SYSCALL(__NR_write, sys_write)
+#define __NR_writev __LINE__
+__SYSCALL(__NR_writev, sys_writev)
+#define __NR_pread64 __LINE__
+__SYSCALL(__NR_pread64, sys_pread64)
+#define __NR_pwrite64 __LINE__
+__SYSCALL(__NR_pwrite64, sys_pwrite64)
+
+/* fs/sendfile.c */
+#define __NR3264_sendfile __LINE__
+__SC_3264(__NR3264_sendfile, sys_sendfile64, sys_sendfile)
+
+/* fs/select.c */
+#define __NR_pselect6 __LINE__
+__SYSCALL(__NR_pselect6, sys_pselect6)
+#define __NR_ppoll __LINE__
+__SYSCALL(__NR_ppoll, sys_ppoll)
+
+/* fs/signalfd.c */
+#define __NR_signalfd4 __LINE__
+__SYSCALL(__NR_signalfd4, sys_signalfd4)
+
+/* fs/splice.c */
+#define __NR_vmsplice __LINE__
+__SYSCALL(__NR_vmsplice, sys_vmsplice)
+#define __NR_splice __LINE__
+__SYSCALL(__NR_splice, sys_splice)
+#define __NR_tee __LINE__
+__SYSCALL(__NR_tee, sys_tee)
+
+/* fs/stat.c */
+#define __NR_readlinkat __LINE__
+__SYSCALL(__NR_readlinkat, sys_readlinkat)
+#define __NR3264_fstatat __LINE__
+__SC_3264(__NR3264_fstatat, sys_fstatat64, sys_newfstatat)
+#define __NR3264_fstat __LINE__
+__SC_3264(__NR3264_fstat, sys_fstat64, sys_newfstat)
+
+/* fs/sync.c */
+#define __NR_sync __LINE__
+__SYSCALL(__NR_sync, sys_sync)
+#define __NR_fsync __LINE__
+__SYSCALL(__NR_fsync, sys_fsync)
+#define __NR_fdatasync __LINE__
+__SYSCALL(__NR_fdatasync, sys_fdatasync)
+#define __NR_sync_file_range __LINE__
+__SYSCALL(__NR_sync_file_range, sys_sync_file_range) /* .long sys_sync_file_range2, */
+
+/* fs/timerfd.c */
+#define __NR_timerfd_create __LINE__
+__SYSCALL(__NR_timerfd_create, sys_timerfd_create)
+#define __NR_timerfd_settime __LINE__
+__SYSCALL(__NR_timerfd_settime, sys_timerfd_settime)
+#define __NR_timerfd_gettime __LINE__
+__SYSCALL(__NR_timerfd_gettime, sys_timerfd_gettime)
+
+/* fs/utimes.c */
+#define __NR_utimensat __LINE__
+__SYSCALL(__NR_utimensat, sys_utimensat)
+
+/* kernel/acct.c */
+#define __NR_acct __LINE__
+__SYSCALL(__NR_acct, sys_acct)
+
+/* kernel/capability.c */
+#define __NR_capget __LINE__
+__SYSCALL(__NR_capget, sys_capget)
+#define __NR_capset __LINE__
+__SYSCALL(__NR_capset, sys_capset)
+
+/* kernel/exec_domain.c */
+#define __NR_personality __LINE__
+__SYSCALL(__NR_personality, sys_personality)
+
+/* kernel/exit.c */
+#define __NR_exit __LINE__
+__SYSCALL(__NR_exit, sys_exit)
+#define __NR_exit_group __LINE__
+__SYSCALL(__NR_exit_group, sys_exit_group)
+#define __NR_waitid __LINE__
+__SYSCALL(__NR_waitid, sys_waitid)
+
+/* kernel/fork.c */
+#define __NR_set_tid_address __LINE__
+__SYSCALL(__NR_set_tid_address, sys_set_tid_address)
+#define __NR_unshare __LINE__
+__SYSCALL(__NR_unshare, sys_unshare)
+
+/* kernel/futex.c */
+#define __NR_futex __LINE__
+__SYSCALL(__NR_futex, sys_futex)
+#define __NR_set_robust_list __LINE__
+__SYSCALL(__NR_set_robust_list, sys_set_robust_list)
+#define __NR_get_robust_list __LINE__
+__SYSCALL(__NR_get_robust_list, sys_get_robust_list)
+
+/* kernel/hrtimer.c */
+#define __NR_nanosleep __LINE__
+__SYSCALL(__NR_nanosleep, sys_nanosleep)
+
+/* kernel/itimer.c */
+#define __NR_getitimer __LINE__
+__SYSCALL(__NR_getitimer, sys_getitimer)
+#define __NR_setitimer __LINE__
+__SYSCALL(__NR_setitimer, sys_setitimer)
+
+/* kernel/kexec.c */
+#define __NR_kexec_load __LINE__
+__SYSCALL(__NR_kexec_load, sys_kexec_load)
+
+/* kernel/module.c */
+#define __NR_init_module __LINE__
+__SYSCALL(__NR_init_module, sys_init_module)
+#define __NR_delete_module __LINE__
+__SYSCALL(__NR_delete_module, sys_delete_module)
+
+/* kernel/posix-timers.c */
+#define __NR_timer_create __LINE__
+__SYSCALL(__NR_timer_create, sys_timer_create)
+#define __NR_timer_gettime __LINE__
+__SYSCALL(__NR_timer_gettime, sys_timer_gettime)
+#define __NR_timer_getoverrun __LINE__
+__SYSCALL(__NR_timer_getoverrun, sys_timer_getoverrun)
+#define __NR_timer_settime __LINE__
+__SYSCALL(__NR_timer_settime, sys_timer_settime)
+#define __NR_timer_delete __LINE__
+__SYSCALL(__NR_timer_delete, sys_timer_delete)
+#define __NR_clock_settime __LINE__
+__SYSCALL(__NR_clock_settime, sys_clock_settime)
+#define __NR_clock_gettime __LINE__
+__SYSCALL(__NR_clock_gettime, sys_clock_gettime)
+#define __NR_clock_getres __LINE__
+__SYSCALL(__NR_clock_getres, sys_clock_getres)
+#define __NR_clock_nanosleep __LINE__
+__SYSCALL(__NR_clock_nanosleep, sys_clock_nanosleep)
+
+/* kernel/printk.c */
+#define __NR_syslog __LINE__
+__SYSCALL(__NR_syslog, sys_syslog)
+
+/* kernel/ptrace.c */
+#define __NR_ptrace __LINE__
+__SYSCALL(__NR_ptrace, sys_ptrace)
+
+/* kernel/sched.c */
+#define __NR_sched_setparam __LINE__
+__SYSCALL(__NR_sched_setparam, sys_sched_setparam)
+#define __NR_sched_setscheduler __LINE__
+__SYSCALL(__NR_sched_setscheduler, sys_sched_setscheduler)
+#define __NR_sched_getscheduler __LINE__
+__SYSCALL(__NR_sched_getscheduler, sys_sched_getscheduler)
+#define __NR_sched_getparam __LINE__
+__SYSCALL(__NR_sched_getparam, sys_sched_getparam)
+#define __NR_sched_setaffinity __LINE__
+__SYSCALL(__NR_sched_setaffinity, sys_sched_setaffinity)
+#define __NR_sched_getaffinity __LINE__
+__SYSCALL(__NR_sched_getaffinity, sys_sched_getaffinity)
+#define __NR_sched_yield __LINE__
+__SYSCALL(__NR_sched_yield, sys_sched_yield)
+#define __NR_sched_get_priority_max __LINE__
+__SYSCALL(__NR_sched_get_priority_max, sys_sched_get_priority_max)
+#define __NR_sched_get_priority_min __LINE__
+__SYSCALL(__NR_sched_get_priority_min, sys_sched_get_priority_min)
+#define __NR_sched_rr_get_interval __LINE__
+__SYSCALL(__NR_sched_rr_get_interval, sys_sched_rr_get_interval)
+
+/* kernel/signal.c */
+#define __NR_restart_syscall __LINE__
+__SYSCALL(__NR_restart_syscall, sys_restart_syscall)
+#define __NR_kill __LINE__
+__SYSCALL(__NR_kill, sys_kill)
+#define __NR_tkill __LINE__
+__SYSCALL(__NR_tkill, sys_tkill)
+#define __NR_tgkill __LINE__
+__SYSCALL(__NR_tgkill, sys_tgkill)
+#define __NR_sigaltstack __LINE__
+__SYSCALL(__NR_sigaltstack, sys_sigaltstack)
+#define __NR_rt_sigsuspend __LINE__
+__SYSCALL(__NR_rt_sigsuspend, sys_rt_sigsuspend) /* __ARCH_WANT_SYS_RT_SIGSUSPEND */
+#define __NR_rt_sigaction __LINE__
+__SYSCALL(__NR_rt_sigaction, sys_rt_sigaction) /* __ARCH_WANT_SYS_RT_SIGACTION */
+#define __NR_rt_sigprocmask __LINE__
+__SYSCALL(__NR_rt_sigprocmask, sys_rt_sigprocmask)
+#define __NR_rt_sigpending __LINE__
+__SYSCALL(__NR_rt_sigpending, sys_rt_sigpending)
+#define __NR_rt_sigtimedwait __LINE__
+__SYSCALL(__NR_rt_sigtimedwait, sys_rt_sigtimedwait)
+#define __NR_rt_sigqueueinfo __LINE__
+__SYSCALL(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo)
+#define __NR_rt_sigreturn __LINE__
+__SYSCALL(__NR_rt_sigreturn, sys_rt_sigreturn) /* sys_rt_sigreturn_wrapper, */
+
+/* kernel/sys.c */
+#define __NR_setpriority __LINE__
+__SYSCALL(__NR_setpriority, sys_setpriority)
+#define __NR_getpriority __LINE__
+__SYSCALL(__NR_getpriority, sys_getpriority)
+#define __NR_reboot __LINE__
+__SYSCALL(__NR_reboot, sys_reboot)
+#define __NR_setregid __LINE__
+__SYSCALL(__NR_setregid, sys_setregid)
+#define __NR_setgid __LINE__
+__SYSCALL(__NR_setgid, sys_setgid)
+#define __NR_setreuid __LINE__
+__SYSCALL(__NR_setreuid, sys_setreuid)
+#define __NR_setuid __LINE__
+__SYSCALL(__NR_setuid, sys_setuid)
+#define __NR_setresuid __LINE__
+__SYSCALL(__NR_setresuid, sys_setresuid)
+#define __NR_getresuid __LINE__
+__SYSCALL(__NR_getresuid, sys_getresuid)
+#define __NR_setresgid __LINE__
+__SYSCALL(__NR_setresgid, sys_setresgid)
+#define __NR_getresgid __LINE__
+__SYSCALL(__NR_getresgid, sys_getresgid)
+#define __NR_setfsuid __LINE__
+__SYSCALL(__NR_setfsuid, sys_setfsuid)
+#define __NR_setfsgid __LINE__
+__SYSCALL(__NR_setfsgid, sys_setfsgid)
+#define __NR_times __LINE__
+__SYSCALL(__NR_times, sys_times)
+#define __NR_setpgid __LINE__
+__SYSCALL(__NR_setpgid, sys_setpgid)
+#define __NR_getpgid __LINE__
+__SYSCALL(__NR_getpgid, sys_getpgid)
+#define __NR_getsid __LINE__
+__SYSCALL(__NR_getsid, sys_getsid)
+#define __NR_setsid __LINE__
+__SYSCALL(__NR_setsid, sys_setsid)
+#define __NR_getgroups __LINE__
+__SYSCALL(__NR_getgroups, sys_getgroups)
+#define __NR_setgroups __LINE__
+__SYSCALL(__NR_setgroups, sys_setgroups)
+#define __NR_uname __LINE__
+__SYSCALL(__NR_uname, sys_newuname)
+#define __NR_sethostname __LINE__
+__SYSCALL(__NR_sethostname, sys_sethostname)
+#define __NR_setdomainname __LINE__
+__SYSCALL(__NR_setdomainname, sys_setdomainname)
+#define __NR_getrlimit __LINE__
+__SYSCALL(__NR_getrlimit, sys_getrlimit)
+#define __NR_setrlimit __LINE__
+__SYSCALL(__NR_setrlimit, sys_setrlimit)
+#define __NR_getrusage __LINE__
+__SYSCALL(__NR_getrusage, sys_getrusage)
+#define __NR_umask __LINE__
+__SYSCALL(__NR_umask, sys_umask)
+#define __NR_prctl __LINE__
+__SYSCALL(__NR_prctl, sys_prctl)
+#define __NR_getcpu __LINE__
+__SYSCALL(__NR_getcpu, sys_getcpu)
+
+/* kernel/time.c */
+#define __NR_gettimeofday __LINE__
+__SYSCALL(__NR_gettimeofday, sys_gettimeofday)
+#define __NR_settimeofday __LINE__
+__SYSCALL(__NR_settimeofday, sys_settimeofday)
+#define __NR_adjtimex __LINE__
+__SYSCALL(__NR_adjtimex, sys_adjtimex)
+
+/* kernel/timer.c */
+#define __NR_getpid __LINE__
+__SYSCALL(__NR_getpid, sys_getpid)
+#define __NR_getppid __LINE__
+__SYSCALL(__NR_getppid, sys_getppid)
+#define __NR_getuid __LINE__
+__SYSCALL(__NR_getuid, sys_getuid)
+#define __NR_geteuid __LINE__
+__SYSCALL(__NR_geteuid, sys_geteuid)
+#define __NR_getgid __LINE__
+__SYSCALL(__NR_getgid, sys_getgid)
+#define __NR_getegid __LINE__
+__SYSCALL(__NR_getegid, sys_getegid)
+#define __NR_gettid __LINE__
+__SYSCALL(__NR_gettid, sys_gettid)
+#define __NR_sysinfo __LINE__
+__SYSCALL(__NR_sysinfo, sys_sysinfo)
+
+/* ipc/mqueue.c */
+#define __NR_mq_open __LINE__
+__SYSCALL(__NR_mq_open, sys_mq_open)
+#define __NR_mq_unlink __LINE__
+__SYSCALL(__NR_mq_unlink, sys_mq_unlink)
+#define __NR_mq_timedsend __LINE__
+__SYSCALL(__NR_mq_timedsend, sys_mq_timedsend)
+#define __NR_mq_timedreceive __LINE__
+__SYSCALL(__NR_mq_timedreceive, sys_mq_timedreceive)
+#define __NR_mq_notify __LINE__
+__SYSCALL(__NR_mq_notify, sys_mq_notify)
+#define __NR_mq_getsetattr __LINE__
+__SYSCALL(__NR_mq_getsetattr, sys_mq_getsetattr)
+
+/* ipc/msg.c */
+#define __NR_msgget __LINE__
+__SYSCALL(__NR_msgget, sys_msgget)
+#define __NR_msgctl __LINE__
+__SYSCALL(__NR_msgctl, sys_msgctl)
+#define __NR_msgrcv __LINE__
+__SYSCALL(__NR_msgrcv, sys_msgrcv)
+#define __NR_msgsnd __LINE__
+__SYSCALL(__NR_msgsnd, sys_msgsnd)
+
+/* ipc/sem.c */
+#define __NR_semget __LINE__
+__SYSCALL(__NR_semget, sys_semget)
+#define __NR_semctl __LINE__
+__SYSCALL(__NR_semctl, sys_semctl)
+#define __NR_semtimedop __LINE__
+__SYSCALL(__NR_semtimedop, sys_semtimedop)
+#define __NR_semop __LINE__
+__SYSCALL(__NR_semop, sys_semop)
+
+/* ipc/shm.c */
+#define __NR_shmget __LINE__
+__SYSCALL(__NR_shmget, sys_shmget)
+#define __NR_shmctl __LINE__
+__SYSCALL(__NR_shmctl, sys_shmctl)
+#define __NR_shmat __LINE__
+__SYSCALL(__NR_shmat, sys_shmat)
+#define __NR_shmdt __LINE__
+__SYSCALL(__NR_shmdt, sys_shmdt)
+
+/* net/socket.c */
+#define __NR_socket __LINE__
+__SYSCALL(__NR_socket, sys_socket)
+#define __NR_socketpair __LINE__
+__SYSCALL(__NR_socketpair, sys_socketpair)
+#define __NR_bind __LINE__
+__SYSCALL(__NR_bind, sys_bind)
+#define __NR_listen __LINE__
+__SYSCALL(__NR_listen, sys_listen)
+#define __NR_accept __LINE__
+__SYSCALL(__NR_accept, sys_accept)
+#define __NR_connect __LINE__
+__SYSCALL(__NR_connect, sys_connect)
+#define __NR_getsockname __LINE__
+__SYSCALL(__NR_getsockname, sys_getsockname)
+#define __NR_getpeername __LINE__
+__SYSCALL(__NR_getpeername, sys_getpeername)
+#define __NR_sendto __LINE__
+__SYSCALL(__NR_sendto, sys_sendto)
+#define __NR_recvfrom __LINE__
+__SYSCALL(__NR_recvfrom, sys_recvfrom)
+#define __NR_setsockopt __LINE__
+__SYSCALL(__NR_setsockopt, sys_setsockopt)
+#define __NR_getsockopt __LINE__
+__SYSCALL(__NR_getsockopt, sys_getsockopt)
+#define __NR_shutdown __LINE__
+__SYSCALL(__NR_shutdown, sys_shutdown)
+#define __NR_sendmsg __LINE__
+__SYSCALL(__NR_sendmsg, sys_sendmsg)
+#define __NR_recvmsg __LINE__
+__SYSCALL(__NR_recvmsg, sys_recvmsg)
+
+/* mm/filemap.c */
+#define __NR_readahead __LINE__
+__SYSCALL(__NR_readahead, sys_readahead)
+
+/* mm/nommu.c, also with MMU */
+#define __NR_brk __LINE__
+__SYSCALL(__NR_brk, sys_brk)
+#define __NR_munmap __LINE__
+__SYSCALL(__NR_munmap, sys_munmap)
+#define __NR_mremap __LINE__
+__SYSCALL(__NR_mremap, sys_mremap)
+
+/* security/keys/keyctl.c */
+#define __NR_add_key __LINE__
+__SYSCALL(__NR_add_key, sys_add_key)
+#define __NR_request_key __LINE__
+__SYSCALL(__NR_request_key, sys_request_key)
+#define __NR_keyctl __LINE__
+__SYSCALL(__NR_keyctl, sys_keyctl)
+
+/* arch/example/kernel/sys_example.c */
+#define __NR_clone __LINE__
+__SYSCALL(__NR_clone, sys_clone)	/* .long sys_clone_wrapper */
+#define __NR_execve __LINE__
+__SYSCALL(__NR_execve, sys_execve)	/* .long sys_execve_wrapper */
+
+#define __NR3264_mmap __LINE__
+__SC_3264(__NR3264_mmap, sys_mmap2, sys_mmap)
+/* mm/fadvise.c */
+#define __NR3264_fadvise64 __LINE__
+__SC_3264(__NR3264_fadvise64, sys_fadvise64_64, sys_fadvise64)
+
+/* mm/, CONFIG_MMU only */
+#ifndef __ARCH_NOMMU
+#define __NR_swapon __LINE__
+__SYSCALL(__NR_swapon, sys_swapon)
+#define __NR_swapoff __LINE__
+__SYSCALL(__NR_swapoff, sys_swapoff)
+#define __NR_mprotect __LINE__
+__SYSCALL(__NR_mprotect, sys_mprotect)
+#define __NR_msync __LINE__
+__SYSCALL(__NR_msync, sys_msync)
+#define __NR_mlock __LINE__
+__SYSCALL(__NR_mlock, sys_mlock)
+#define __NR_munlock __LINE__
+__SYSCALL(__NR_munlock, sys_munlock)
+#define __NR_mlockall __LINE__
+__SYSCALL(__NR_mlockall, sys_mlockall)
+#define __NR_munlockall __LINE__
+__SYSCALL(__NR_munlockall, sys_munlockall)
+#define __NR_mincore __LINE__
+__SYSCALL(__NR_mincore, sys_mincore)
+#define __NR_madvise __LINE__
+__SYSCALL(__NR_madvise, sys_madvise)
+#define __NR_remap_file_pages __LINE__
+__SYSCALL(__NR_remap_file_pages, sys_remap_file_pages)
+#define __NR_mbind __LINE__
+__SYSCALL(__NR_mbind, sys_mbind)
+#define __NR_get_mempolicy __LINE__
+__SYSCALL(__NR_get_mempolicy, sys_get_mempolicy)
+#define __NR_set_mempolicy __LINE__
+__SYSCALL(__NR_set_mempolicy, sys_set_mempolicy)
+#define __NR_migrate_pages __LINE__
+__SYSCALL(__NR_migrate_pages, sys_migrate_pages)
+#define __NR_move_pages __LINE__
+__SYSCALL(__NR_move_pages, sys_move_pages)
+#endif
+
+/*
+ * All syscalls below here should go away really,
+ * these are provided for both review and as a porting
+ * help for the C library version.
+*
+ * Last chance: are any of these important enought to
+ * enable by default?
+ */
+#ifdef __ARCH_WANT_SYSCALL_NO_AT
+#define __NR_open __LINE__
+__SYSCALL(__NR_open, sys_open)
+#define __NR_link __LINE__
+__SYSCALL(__NR_link, sys_link)
+#define __NR_unlink __LINE__
+__SYSCALL(__NR_unlink, sys_unlink)
+#define __NR_mknod __LINE__
+__SYSCALL(__NR_mknod, sys_mknod)
+#define __NR_chmod __LINE__
+__SYSCALL(__NR_chmod, sys_chmod)
+#define __NR_chown __LINE__
+__SYSCALL(__NR_chown, sys_chown)
+#define __NR_mkdir __LINE__
+__SYSCALL(__NR_mkdir, sys_mkdir)
+#define __NR_rmdir __LINE__
+__SYSCALL(__NR_rmdir, sys_rmdir)
+#define __NR_lchown __LINE__
+__SYSCALL(__NR_lchown, sys_lchown)
+#define __NR_access __LINE__
+__SYSCALL(__NR_access, sys_access)
+#define __NR_rename __LINE__
+__SYSCALL(__NR_rename, sys_rename)
+#define __NR_readlink __LINE__
+__SYSCALL(__NR_readlink, sys_readlink)
+#define __NR_symlink __LINE__
+__SYSCALL(__NR_symlink, sys_symlink)
+#define __NR_utimes __LINE__
+__SYSCALL(__NR_utimes, sys_utimes)
+#define __NR3264_stat __LINE__
+__SC_3264(__NR3264_stat, sys_stat64, sys_newstat)
+#define __NR3264_lstat __LINE__
+__SC_3264(__NR3264_lstat, sys_lstat64, sys_newlstat)
+#endif /* __ARCH_WANT_SYSCALL_NO_AT */
+
+#ifdef __ARCH_WANT_SYSCALL_NO_FLAGS
+#define __NR_pipe __LINE__
+__SYSCALL(__NR_pipe, sys_pipe)
+#define __NR_dup2 __LINE__
+__SYSCALL(__NR_dup2, sys_dup2)
+#define __NR_epoll_create __LINE__
+__SYSCALL(__NR_epoll_create, sys_epoll_create)
+#define __NR_inotify_init __LINE__
+__SYSCALL(__NR_inotify_init, sys_inotify_init)
+#define __NR_eventfd __LINE__
+__SYSCALL(__NR_eventfd, sys_eventfd)
+#define __NR_signalfd __LINE__
+__SYSCALL(__NR_signalfd, sys_signalfd)
+#endif /* __ARCH_WANT_SYSCALL_NO_FLAGS */
+
+#if __BITS_PER_LONG == 32 && defined(__ARCH_WANT_SYSCALL_OFF_T)
+#define __NR_sendfile __LINE__
+__SYSCALL(__NR_sendfile, sys_sendfile)
+#define __NR_ftruncate __LINE__
+__SYSCALL(__NR_ftruncate, sys_ftruncate)
+#define __NR_truncate __LINE__
+__SYSCALL(__NR_truncate, sys_truncate)
+#define __NR_stat __LINE__
+__SYSCALL(__NR_stat, sys_newstat)
+#define __NR_lstat __LINE__
+__SYSCALL(__NR_lstat, sys_newlstat)
+#define __NR_fstat __LINE__
+__SYSCALL(__NR_fstat, sys_newfstat)
+#define __NR_fcntl __LINE__
+__SYSCALL(__NR_fcntl, sys_fcntl)
+#define __NR_fadvise64 __LINE__
+#define __ARCH_WANT_SYS_FADVISE64
+__SYSCALL(__NR_fadvise64, sys_fadvise64)
+#define __NR_newfstatat __LINE__
+#define __ARCH_WANT_SYS_NEWFSTATAT
+__SYSCALL(__NR_newfstatat, sys_newfstatat)
+#define __NR_fstatfs __LINE__
+__SYSCALL(__NR_fstatfs, sys_fstatfs)
+#define __NR_statfs __LINE__
+__SYSCALL(__NR_statfs, sys_statfs)
+#define __NR_getdents __LINE__
+__SYSCALL(__NR_getdents, sys_getdents)
+#define __NR_lseek __LINE__
+__SYSCALL(__NR_lseek, sys_lseek)
+#define __NR_mmap __LINE__
+__SYSCALL(__NR_mmap, sys_mmap)
+#endif /* 32 bit off_t syscalls */
+
+#ifdef __ARCH_WANT_SYSCALL_DEPRECATED
+#define __NR_alarm __LINE__
+#define __ARCH_WANT_SYS_ALARM
+__SYSCALL(__NR_alarm, sys_alarm)
+#define __NR_getpgrp __LINE__
+#define __ARCH_WANT_SYS_GETPGRP
+__SYSCALL(__NR_getpgrp, sys_getpgrp)
+#define __NR_pause __LINE__
+#define __ARCH_WANT_SYS_PAUSE
+__SYSCALL(__NR_pause, sys_pause)
+#define __NR_time __LINE__
+#define __ARCH_WANT_SYS_TIME
+__SYSCALL(__NR_time, sys_time)
+#define __NR_utime __LINE__
+#define __ARCH_WANT_SYS_UTIME
+__SYSCALL(__NR_utime, sys_utime)
+
+#define __NR_creat __LINE__
+__SYSCALL(__NR_creat, sys_creat)
+#define __NR_futimesat __LINE__
+__SYSCALL(__NR_futimesat, sys_futimesat)
+#define __NR_poll __LINE__
+__SYSCALL(__NR_poll, sys_poll)
+#define __NR_select __LINE__
+__SYSCALL(__NR_select, sys_select)
+#define __NR_epoll_wait __LINE__
+__SYSCALL(__NR_epoll_wait, sys_epoll_wait)
+#define __NR_ustat __LINE__
+__SYSCALL(__NR_ustat, sys_ustat)
+#define __NR_vfork __LINE__
+__SYSCALL(__NR_vfork, sys_vfork)
+#define __NR_wait4 __LINE__
+__SYSCALL(__NR_wait4, sys_wait4)
+
+#define __NR_fork __LINE__
+#ifdef CONFIG_MMU
+__SYSCALL(__NR_fork, sys_fork)
+#else
+__SYSCALL(__NR_fork, sys_ni_syscall)
+#endif /* CONFIG_MMU */
+#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */
+
+#define __NR_syscalls __LINE__
+
+/*
+ * 32 bit systems traditionally used different
+ * syscalls for off_t and loff_t arguments, while
+ * 64 bit systems only need the off_t version.
+ * For new 32 bit platforms, there is no need to
+ * implement the old 32 bit off_t syscalls, so
+ * they take different names.
+ * Here we map the numbers so that both versions
+ * use the same syscall table layout.
+ */
+#if __BITS_PER_LONG == 64
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_truncate
+#define __NR_getdents __NR3264_getdents
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_newfstatat __NR3264_fstatat
+#define __NR_fstat __NR3264_fstat
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
+#ifdef __NR3264_stat
+#define __NR_stat __NR3264_stat
+#define __NR_lstat __NR3264_lstat
+#endif
+#else
+#define __NR_fcntl64 __NR3264_fcntl
+#define __NR_statfs64 __NR3264_statfs
+#define __NR_fstatfs64 __NR3264_fstatfs
+#define __NR_truncate64 __NR3264_truncate
+#define __NR_ftruncate64 __NR3264_truncate
+#define __NR_getdents64 __NR3264_getdents
+#define __NR_llseek __NR3264_lseek
+#define __NR_sendfile64 __NR3264_sendfile
+#define __NR_fstatat64 __NR3264_fstatat
+#define __NR_fstat64 __NR3264_fstat
+#define __NR_mmap2 __NR3264_mmap
+#define __NR_fadvise64_64 __NR3264_fadvise64
+#ifdef __NR3264_stat
+#define __NR_stat64 __NR3264_stat
+#define __NR_lstat64 __NR3264_lstat
+#endif
+#endif
+
+#ifdef __KERNEL__
+
+/*
+ * These are required system calls, we should
+ * invert the logic eventually and let them
+ * be selected by default.
+ */
+#if __BITS_PER_LONG == 32
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_LLSEEK
+#endif
+#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+#ifndef cond_syscall
+#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_GENERIC_UNISTD_H */
diff --git a/kernel/Makefile b/kernel/Makefile
index e4791b3..717761b 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -93,6 +93,7 @@ obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
 obj-$(CONFIG_FUNCTION_TRACER) += trace/
 obj-$(CONFIG_TRACING) += trace/
 obj-$(CONFIG_SMP) += sched_cpupri.o
+obj-$(CONFIG_GENERIC_SYSCALL_TABLE) += syscall_table.o
 
 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
 # According to Alan Modra <alan-HpYC8cTCicIJY7gZg3T8ig@public.gmane.org>, the -fno-omit-frame-pointer is
diff --git a/kernel/syscall_table.c b/kernel/syscall_table.c
new file mode 100644
index 0000000..a2da111
--- /dev/null
+++ b/kernel/syscall_table.c
@@ -0,0 +1,12 @@
+#include <linux/syscalls.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] (call),
+
+void *sys_call_table[] = {
+#include <asm/unistd.h>
+};
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 60d00d1..28b9e3e 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -14,6 +14,57 @@ cat << EOF
 #include <asm/types.h>
 #include <asm/unistd.h>
 
+/* *at */
+#define __IGNORE_open		/* openat */
+#define __IGNORE_link		/* linkat */
+#define __IGNORE_unlink		/* unlinkat */
+#define __IGNORE_mknod		/* mknodat */
+#define __IGNORE_chmod		/* fchmodat */
+#define __IGNORE_chown		/* fchownat */
+#define __IGNORE_mkdir		/* mkdirat */
+#define __IGNORE_rmdir		/* unlinkat */
+#define __IGNORE_lchown		/* fchownat */
+#define __IGNORE_access		/* faccessat */
+#define __IGNORE_rename		/* renameat */
+#define __IGNORE_readlink	/* readlinkat */
+#define __IGNORE_symlink	/* symlinkat */
+#define __IGNORE_utimes		/* futimesat */
+#if BITS_PER_LONG == 64
+#define __IGNORE_stat		/* fstatat */
+#define __IGNORE_lstat		/* fstatat */
+#else
+#define __IGNORE_stat64		/* fstatat64 */
+#define __IGNORE_lstat64	/* fstatat64 */
+#endif
+
+/* CLOEXEC flag */
+#define __IGNORE_pipe		/* pipe2 */
+#define __IGNORE_dup2		/* dup3 */
+#define __IGNORE_epoll_create	/* epoll_create1 */
+#define __IGNORE_inotify_init	/* inotify_init1 */
+#define __IGNORE_eventfd	/* eventfd2 */
+#define __IGNORE_signalfd	/* signalfd4 */
+
+/* MMU */
+#ifndef CONFIG_MMU
+#define __IGNORE_madvise
+#define __IGNORE_mbind
+#define __IGNORE_mincore
+#define __IGNORE_mlock
+#define __IGNORE_mlockall
+#define __IGNORE_munlock
+#define __IGNORE_munlockall
+#define __IGNORE_mprotect
+#define __IGNORE_msync
+#define __IGNORE_migrate_pages
+#define __IGNORE_move_pages
+#define __IGNORE_remap_file_pages
+#define __IGNORE_get_mempolicy
+#define __IGNORE_set_mempolicy
+#define __IGNORE_swapoff
+#define __IGNORE_swapon
+#endif
+
 /* System calls for 32-bit kernels only */
 #if BITS_PER_LONG == 64
 #define __IGNORE_sendfile64
@@ -27,6 +78,24 @@ cat << EOF
 #define __IGNORE_fstatat64
 #define __IGNORE_fstatfs64
 #define __IGNORE_statfs64
+#define __IGNORE_getdents64
+#define __IGNORE_llseek
+#define __IGNORE_mmap2
+#else
+#define __IGNORE_sendfile
+#define __IGNORE_ftruncate
+#define __IGNORE_truncate
+#define __IGNORE_stat
+#define __IGNORE_lstat
+#define __IGNORE_fstat
+#define __IGNORE_fcntl
+#define __IGNORE_fadvise64
+#define __IGNORE_newfstatat
+#define __IGNORE_fstatfs
+#define __IGNORE_statfs
+#define __IGNORE_getdents
+#define __IGNORE_lseek
+#define __IGNORE_mmap
 #endif
 
 /* i386-specific or historical system calls */
@@ -44,7 +113,6 @@ cat << EOF
 #define __IGNORE_idle
 #define __IGNORE_modify_ldt
 #define __IGNORE_ugetrlimit
-#define __IGNORE_mmap2
 #define __IGNORE_vm86
 #define __IGNORE_vm86old
 #define __IGNORE_set_thread_area
@@ -55,7 +123,6 @@ cat << EOF
 #define __IGNORE_oldlstat
 #define __IGNORE_oldolduname
 #define __IGNORE_olduname
-#define __IGNORE_umount2
 #define __IGNORE_umount
 #define __IGNORE_waitpid
 #define __IGNORE_stime
@@ -75,9 +142,12 @@ cat << EOF
 #define __IGNORE__llseek
 #define __IGNORE__newselect
 #define __IGNORE_create_module
-#define __IGNORE_delete_module
 #define __IGNORE_query_module
 #define __IGNORE_get_kernel_syms
+#define __IGNORE_sysfs
+#define __IGNORE_uselib
+#define __IGNORE__sysctl
+
 /* ... including the "new" 32-bit uid syscalls */
 #define __IGNORE_lchown32
 #define __IGNORE_getuid32
@@ -99,6 +169,23 @@ cat << EOF
 #define __IGNORE_setfsuid32
 #define __IGNORE_setfsgid32
 
+/* these can be expressed using other calls */
+#define __IGNORE_alarm		/* setitimer */
+#define __IGNORE_creat		/* open */
+#define __IGNORE_fork		/* clone */
+#define __IGNORE_futimesat	/* utimensat */
+#define __IGNORE_getpgrp	/* getpgid */
+#define __IGNORE_pause		/* sigsuspend */
+#define __IGNORE_poll		/* ppoll */
+#define __IGNORE_select		/* pselect6 */
+#define __IGNORE_epoll_wait	/* epoll_pwait */
+#define __IGNORE_time		/* gettimeofday */
+#define __IGNORE_uname		/* newuname */
+#define __IGNORE_ustat		/* statfs */
+#define __IGNORE_utime		/* utimes */
+#define __IGNORE_vfork		/* clone */
+#define __IGNORE_wait4		/* waitid */
+
 /* sync_file_range had a stupid ABI. Allow sync_file_range2 instead */
 #ifdef __NR_sync_file_range2
 #define __IGNORE_sync_file_range
--
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[RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

I've spent more time on my asm-generic patches and believe I now
have an unistd.h implementation that can be used by the new
architectures (score and microblaze) so they don't have to go
through the error-prone process of coming up with their own lists.

It would be good if more people could in particular look over the
system call lists. I have left the syscalls that I think should
be dropped in #ifdef __ARCH_WANT_SYSCALL_{DEPRECATED,NO_AT,NO_FLAGS,OFF_T}
so that it becomes easy to reenable them temporarily while porting
the libc, and to easily see which ones get left out.

I have also changed checksyscalls.sh to stop complaining when
the old syscalls are not present.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 include/asm-generic/posix_types.h |  162 ++++++
 include/asm-generic/types.h       |   63 ++
 include/asm-generic/unistd.h      |  829 +++++++++++++++++++++++++++++
 kernel/Makefile                   |    1 +
 kernel/syscall_table.c            |   12 +
 scripts/checksyscalls.sh          |   93 +++-
 6 files changed, 1157 insertions(+), 3 deletions(-)


diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
new file mode 100644
index 0000000..4772f74
--- /dev/null
+++ b/include/asm-generic/posix_types.h
@@ -0,0 +1,162 @@
+#ifndef __ASM_GENERIC_POSIX_TYPES_H
+#define __ASM_GENERIC_POSIX_TYPES_H
+
+#include <asm/types.h>
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.
+ *
+ * First the types that are often defined in different ways across
+ * architectures, so that you can override them.
+ */
+
+#ifndef __kernel_ino_t
+typedef unsigned long	__kernel_ino_t;
+#endif
+
+#ifndef __kernel_mode_t
+typedef unsigned int	__kernel_mode_t;
+#endif
+
+#ifndef __kernel_nlink_t
+typedef unsigned long	__kernel_nlink_t;
+#endif
+
+#ifndef __kernel_pid_t
+typedef int		__kernel_pid_t;
+#endif
+
+#ifndef __kernel_ipc_pid_t
+typedef int		__kernel_ipc_pid_t;
+#endif
+
+#ifndef __kernel_uid_t
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+#endif
+
+#ifndef __kernel_suseconds_t
+typedef long		__kernel_suseconds_t;
+#endif
+
+#ifndef __kernel_daddr_t
+typedef int		__kernel_daddr_t;
+#endif
+
+#ifndef __kernel_uid32_t
+typedef __kernel_uid_t	__kernel_uid32_t;
+typedef __kernel_gid_t	__kernel_gid32_t;
+#endif
+
+#ifndef __kernel_old_uid_t
+typedef __kernel_uid_t	__kernel_old_uid_t;
+typedef __kernel_gid_t	__kernel_old_gid_t;
+#endif
+
+#ifndef __kernel_old_dev_t
+typedef unsigned int	__kernel_old_dev_t;
+#endif
+
+#ifndef __kernel_size_t
+#if __BITS_PER_LONG != 64
+typedef unsigned int	__kernel_size_t;
+typedef int		__kernel_ssize_t;
+typedef int		__kernel_ptrdiff_t;
+#else
+typedef unsigned long	__kernel_size_t;
+typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+#endif
+#endif
+
+/*
+ * anything below here should be completely generic
+ */
+typedef long		__kernel_off_t;
+typedef long long	__kernel_loff_t;
+typedef long		__kernel_time_t;
+typedef long		__kernel_clock_t;
+typedef int		__kernel_timer_t;
+typedef int		__kernel_clockid_t;
+typedef char *		__kernel_caddr_t;
+typedef unsigned short	__kernel_uid16_t;
+typedef unsigned short	__kernel_gid16_t;
+
+typedef struct {
+	int	val[2];
+} __kernel_fsid_t;
+
+#ifdef __KERNEL__
+
+#undef __FD_SET
+static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
+}
+
+#undef __FD_CLR
+static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	__fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
+}
+
+#undef __FD_ISSET
+static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
+{
+	unsigned long __tmp = __fd / __NFDBITS;
+	unsigned long __rem = __fd % __NFDBITS;
+	return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
+}
+
+/*
+ * This will unroll the loop for the normal constant case (8 ints,
+ * for a 256-bit fd_set)
+ */
+#undef __FD_ZERO
+static inline void __FD_ZERO(__kernel_fd_set *__p)
+{
+	unsigned long *__tmp = __p->fds_bits;
+	int __i;
+
+	if (__builtin_constant_p(__FDSET_LONGS)) {
+		switch (__FDSET_LONGS) {
+		case 16:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			__tmp[ 8] = 0; __tmp[ 9] = 0;
+			__tmp[10] = 0; __tmp[11] = 0;
+			__tmp[12] = 0; __tmp[13] = 0;
+			__tmp[14] = 0; __tmp[15] = 0;
+			return;
+
+		case 8:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			__tmp[ 4] = 0; __tmp[ 5] = 0;
+			__tmp[ 6] = 0; __tmp[ 7] = 0;
+			return;
+
+		case 4:
+			__tmp[ 0] = 0; __tmp[ 1] = 0;
+			__tmp[ 2] = 0; __tmp[ 3] = 0;
+			return;
+		}
+	}
+	__i = __FDSET_LONGS;
+	while (__i) {
+		__i--;
+		*__tmp = 0;
+		__tmp++;
+	}
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_GENERIC_POSIX_TYPES_H */
diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
new file mode 100644
index 0000000..147b553
--- /dev/null
+++ b/include/asm-generic/types.h
@@ -0,0 +1,63 @@
+#ifndef _ASM_GENERIC_TYPES_H
+#define _ASM_GENERIC_TYPES_H
+
+/*
+ * int-ll64 is used practically everywhere now,
+ * so use it as a reasonable default.
+ */
+#include <asm-generic/int-ll64.h>
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * There seems to be no way of detecting this automatically from user
+ * space, so 64 bit architectures should override this in their types.h.
+ */
+#ifndef __BITS_PER_LONG
+#define __BITS_PER_LONG 32
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+#ifdef CONFIG_64BIT
+#define BITS_PER_LONG 64
+#else
+#define BITS_PER_LONG 32
+#endif /* CONFIG_64BIT */
+
+#if BITS_PER_LONG != __BITS_PER_LONG
+#error cannot determine word size
+#endif
+
+#ifndef __ASSEMBLY__
+
+/*
+ * DMA addresses may be very different from physical addresses
+ * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
+ * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
+ * physical addresses.
+ * This default defines dma_addr_t to have the same size as
+ * phys_addr_t, which is the most common way.
+ * Do not define the dma64_addr_t type, which never really
+ * worked.
+ */
+#ifndef dma_addr_t
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+typedef u64 dma_addr_t;
+#else
+typedef u32 dma_addr_t;
+#endif /* CONFIG_PHYS_ADDR_T_64BIT */
+#endif /* dma_addr_t */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_GENERIC_TYPES_H */
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
new file mode 100644
index 0000000..9c27fe0
--- /dev/null
+++ b/include/asm-generic/unistd.h
@@ -0,0 +1,829 @@
+#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
+#define _ASM_GENERIC_UNISTD_H
+
+/* need types.h for __BITS_PER_LONG */
+#include <linux/types.h>
+
+/*
+ * This file contains the system call numbers, based on the
+ * layout of the x86-64 architecture, which embeds the
+ * pointer to the syscall in the table.
+ *
+ * As a basic principle, no duplication of functionality
+ * should be added, e.g. we don't use lseek when llseek
+ * is present. New architectures should use this file
+ * and implement the less feature-full calls in user space.
+ *
+ * This file version is for review only, once the set of
+ * syscalls that are required has been determined, the
+ * __LINE__ numbers will be replaced with contiguous
+ * numbers for the syscalls.
+ */
+
+#ifndef __SYSCALL
+#define __SYSCALL(x,y)
+#endif
+
+#if __BITS_PER_LONG == 32
+#define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _32)
+#else
+#define __SC_3264(_nr, _32, _64) __SYSCALL(_nr, _64)
+#endif
+
+#define __NR_io_setup __LINE__
+__SYSCALL(__NR_io_setup, sys_io_setup)
+#define __NR_io_destroy __LINE__
+__SYSCALL(__NR_io_destroy, sys_io_destroy)
+#define __NR_io_submit __LINE__
+__SYSCALL(__NR_io_submit, sys_io_submit)
+#define __NR_io_cancel __LINE__
+__SYSCALL(__NR_io_cancel, sys_io_cancel)
+#define __NR_io_getevents __LINE__
+__SYSCALL(__NR_io_getevents, sys_io_getevents)
+
+/* fs/xattr.c */
+#define __NR_setxattr __LINE__
+__SYSCALL(__NR_setxattr, sys_setxattr)
+#define __NR_lsetxattr __LINE__
+__SYSCALL(__NR_lsetxattr, sys_lsetxattr)
+#define __NR_fsetxattr __LINE__
+__SYSCALL(__NR_fsetxattr, sys_fsetxattr)
+#define __NR_getxattr __LINE__
+__SYSCALL(__NR_getxattr, sys_getxattr)
+#define __NR_lgetxattr __LINE__
+__SYSCALL(__NR_lgetxattr, sys_lgetxattr)
+#define __NR_fgetxattr __LINE__
+__SYSCALL(__NR_fgetxattr, sys_fgetxattr)
+#define __NR_listxattr __LINE__
+__SYSCALL(__NR_listxattr, sys_listxattr)
+#define __NR_llistxattr __LINE__
+__SYSCALL(__NR_llistxattr, sys_llistxattr)
+#define __NR_flistxattr __LINE__
+__SYSCALL(__NR_flistxattr, sys_flistxattr)
+#define __NR_removexattr __LINE__
+__SYSCALL(__NR_removexattr, sys_removexattr)
+#define __NR_lremovexattr __LINE__
+__SYSCALL(__NR_lremovexattr, sys_lremovexattr)
+#define __NR_fremovexattr __LINE__
+__SYSCALL(__NR_fremovexattr, sys_fremovexattr)
+
+/* fs/dcache.c */
+#define __NR_getcwd __LINE__
+__SYSCALL(__NR_getcwd, sys_getcwd)
+
+/* fs/cookies.c */
+#define __NR_lookup_dcookie __LINE__
+__SYSCALL(__NR_lookup_dcookie, sys_lookup_dcookie)
+
+/* fs/eventfd.c */
+#define __NR_eventfd2 __LINE__
+__SYSCALL(__NR_eventfd2, sys_eventfd2)
+
+/* fs/eventpoll.c */
+#define __NR_epoll_create1 __LINE__
+__SYSCALL(__NR_epoll_create1, sys_epoll_create1)
+#define __NR_epoll_ctl __LINE__
+__SYSCALL(__NR_epoll_ctl, sys_epoll_ctl)
+#define __NR_epoll_pwait __LINE__
+__SYSCALL(__NR_epoll_pwait, sys_epoll_pwait)
+
+/* fs/fcntl.c */
+#define __NR_dup __LINE__
+__SYSCALL(__NR_dup, sys_dup)
+#define __NR_dup3 __LINE__
+__SYSCALL(__NR_dup3, sys_dup3)
+#define __NR3264_fcntl __LINE__
+__SC_3264(__NR3264_fcntl, sys_fcntl64, sys_fcntl)
+
+/* fs/inotify_user.c */
+#define __NR_inotify_init1 __LINE__
+__SYSCALL(__NR_inotify_init1, sys_inotify_init1)
+#define __NR_inotify_add_watch __LINE__
+__SYSCALL(__NR_inotify_add_watch, sys_inotify_add_watch)
+#define __NR_inotify_rm_watch __LINE__
+__SYSCALL(__NR_inotify_rm_watch, sys_inotify_rm_watch)
+
+/* fs/ioctl.c */
+#define __NR_ioctl __LINE__
+__SYSCALL(__NR_ioctl, sys_ioctl)
+
+/* fs/ioprio.c */
+#define __NR_ioprio_set __LINE__
+__SYSCALL(__NR_ioprio_set, sys_ioprio_set)
+#define __NR_ioprio_get __LINE__
+__SYSCALL(__NR_ioprio_get, sys_ioprio_get)
+
+/* fs/locks.c */
+#define __NR_flock __LINE__
+__SYSCALL(__NR_flock, sys_flock)
+
+/* fs/namei.c */
+#define __NR_mknodat __LINE__
+__SYSCALL(__NR_mknodat, sys_mknodat)
+#define __NR_mkdirat __LINE__
+__SYSCALL(__NR_mkdirat, sys_mkdirat)
+#define __NR_unlinkat __LINE__
+__SYSCALL(__NR_unlinkat, sys_unlinkat)
+#define __NR_symlinkat __LINE__
+__SYSCALL(__NR_symlinkat, sys_symlinkat)
+#define __NR_linkat __LINE__
+__SYSCALL(__NR_linkat, sys_linkat)
+#define __NR_renameat __LINE__
+__SYSCALL(__NR_renameat, sys_renameat)
+
+/* fs/namespace.c */
+#define __NR_umount2 __LINE__
+__SYSCALL(__NR_umount2, sys_umount)
+#define __NR_mount __LINE__
+__SYSCALL(__NR_mount, sys_mount)
+#define __NR_pivot_root __LINE__
+__SYSCALL(__NR_pivot_root, sys_pivot_root)
+
+/* fs/nfsctl.c */
+#define __NR_nfsservctl __LINE__
+__SYSCALL(__NR_nfsservctl, sys_nfsservctl)
+
+/* fs/open.c */
+#define __NR3264_statfs __LINE__
+__SC_3264(__NR3264_statfs, sys_statfs64, sys_statfs)
+#define __NR3264_fstatfs __LINE__
+__SC_3264(__NR3264_fstatfs, sys_fstatfs64, sys_fstatfs)
+#define __NR3264_truncate __LINE__
+__SC_3264(__NR3264_truncate, sys_truncate64, sys_truncate)
+#define __NR3264_ftruncate __LINE__
+__SC_3264(__NR3264_ftruncate, sys_ftruncate64, sys_ftruncate)
+
+#define __NR_fallocate __LINE__
+__SYSCALL(__NR_fallocate, sys_fallocate)
+#define __NR_faccessat __LINE__
+__SYSCALL(__NR_faccessat, sys_faccessat)
+#define __NR_chdir __LINE__
+__SYSCALL(__NR_chdir, sys_chdir)
+#define __NR_fchdir __LINE__
+__SYSCALL(__NR_fchdir, sys_fchdir)
+#define __NR_chroot __LINE__
+__SYSCALL(__NR_chroot, sys_chroot)
+#define __NR_fchmod __LINE__
+__SYSCALL(__NR_fchmod, sys_fchmod)
+#define __NR_fchmodat __LINE__
+__SYSCALL(__NR_fchmodat, sys_fchmodat)
+#define __NR_fchownat __LINE__
+__SYSCALL(__NR_fchownat, sys_fchownat)
+#define __NR_fchown __LINE__
+__SYSCALL(__NR_fchown, sys_fchown)
+#define __NR_openat __LINE__
+__SYSCALL(__NR_openat, sys_openat)
+#define __NR_close __LINE__
+__SYSCALL(__NR_close, sys_close)
+#define __NR_vhangup __LINE__
+__SYSCALL(__NR_vhangup, sys_vhangup)
+
+/* fs/pipe.c */
+#define __NR_pipe2 __LINE__
+__SYSCALL(__NR_pipe2, sys_pipe2)
+
+/* fs/quota.c */
+#define __NR_quotactl __LINE__
+__SYSCALL(__NR_quotactl, sys_quotactl)
+
+/* fs/readdir.c */
+#define __NR3264_getdents __LINE__
+__SC_3264(__NR3264_getdents, sys_getdents64, sys_getdents)
+
+/* fs/read_write.c */
+#define __NR3264_lseek __LINE__
+__SC_3264(__NR3264_lseek, sys_llseek, sys_lseek)
+#define __NR_read __LINE__
+__SYSCALL(__NR_read, sys_read)
+#define __NR_readv __LINE__
+__SYSCALL(__NR_readv, sys_readv)
+#define __NR_write __LINE__
+__SYSCALL(__NR_write, sys_write)
+#define __NR_writev __LINE__
+__SYSCALL(__NR_writev, sys_writev)
+#define __NR_pread64 __LINE__
+__SYSCALL(__NR_pread64, sys_pread64)
+#define __NR_pwrite64 __LINE__
+__SYSCALL(__NR_pwrite64, sys_pwrite64)
+
+/* fs/sendfile.c */
+#define __NR3264_sendfile __LINE__
+__SC_3264(__NR3264_sendfile, sys_sendfile64, sys_sendfile)
+
+/* fs/select.c */
+#define __NR_pselect6 __LINE__
+__SYSCALL(__NR_pselect6, sys_pselect6)
+#define __NR_ppoll __LINE__
+__SYSCALL(__NR_ppoll, sys_ppoll)
+
+/* fs/signalfd.c */
+#define __NR_signalfd4 __LINE__
+__SYSCALL(__NR_signalfd4, sys_signalfd4)
+
+/* fs/splice.c */
+#define __NR_vmsplice __LINE__
+__SYSCALL(__NR_vmsplice, sys_vmsplice)
+#define __NR_splice __LINE__
+__SYSCALL(__NR_splice, sys_splice)
+#define __NR_tee __LINE__
+__SYSCALL(__NR_tee, sys_tee)
+
+/* fs/stat.c */
+#define __NR_readlinkat __LINE__
+__SYSCALL(__NR_readlinkat, sys_readlinkat)
+#define __NR3264_fstatat __LINE__
+__SC_3264(__NR3264_fstatat, sys_fstatat64, sys_newfstatat)
+#define __NR3264_fstat __LINE__
+__SC_3264(__NR3264_fstat, sys_fstat64, sys_newfstat)
+
+/* fs/sync.c */
+#define __NR_sync __LINE__
+__SYSCALL(__NR_sync, sys_sync)
+#define __NR_fsync __LINE__
+__SYSCALL(__NR_fsync, sys_fsync)
+#define __NR_fdatasync __LINE__
+__SYSCALL(__NR_fdatasync, sys_fdatasync)
+#define __NR_sync_file_range __LINE__
+__SYSCALL(__NR_sync_file_range, sys_sync_file_range) /* .long sys_sync_file_range2, */
+
+/* fs/timerfd.c */
+#define __NR_timerfd_create __LINE__
+__SYSCALL(__NR_timerfd_create, sys_timerfd_create)
+#define __NR_timerfd_settime __LINE__
+__SYSCALL(__NR_timerfd_settime, sys_timerfd_settime)
+#define __NR_timerfd_gettime __LINE__
+__SYSCALL(__NR_timerfd_gettime, sys_timerfd_gettime)
+
+/* fs/utimes.c */
+#define __NR_utimensat __LINE__
+__SYSCALL(__NR_utimensat, sys_utimensat)
+
+/* kernel/acct.c */
+#define __NR_acct __LINE__
+__SYSCALL(__NR_acct, sys_acct)
+
+/* kernel/capability.c */
+#define __NR_capget __LINE__
+__SYSCALL(__NR_capget, sys_capget)
+#define __NR_capset __LINE__
+__SYSCALL(__NR_capset, sys_capset)
+
+/* kernel/exec_domain.c */
+#define __NR_personality __LINE__
+__SYSCALL(__NR_personality, sys_personality)
+
+/* kernel/exit.c */
+#define __NR_exit __LINE__
+__SYSCALL(__NR_exit, sys_exit)
+#define __NR_exit_group __LINE__
+__SYSCALL(__NR_exit_group, sys_exit_group)
+#define __NR_waitid __LINE__
+__SYSCALL(__NR_waitid, sys_waitid)
+
+/* kernel/fork.c */
+#define __NR_set_tid_address __LINE__
+__SYSCALL(__NR_set_tid_address, sys_set_tid_address)
+#define __NR_unshare __LINE__
+__SYSCALL(__NR_unshare, sys_unshare)
+
+/* kernel/futex.c */
+#define __NR_futex __LINE__
+__SYSCALL(__NR_futex, sys_futex)
+#define __NR_set_robust_list __LINE__
+__SYSCALL(__NR_set_robust_list, sys_set_robust_list)
+#define __NR_get_robust_list __LINE__
+__SYSCALL(__NR_get_robust_list, sys_get_robust_list)
+
+/* kernel/hrtimer.c */
+#define __NR_nanosleep __LINE__
+__SYSCALL(__NR_nanosleep, sys_nanosleep)
+
+/* kernel/itimer.c */
+#define __NR_getitimer __LINE__
+__SYSCALL(__NR_getitimer, sys_getitimer)
+#define __NR_setitimer __LINE__
+__SYSCALL(__NR_setitimer, sys_setitimer)
+
+/* kernel/kexec.c */
+#define __NR_kexec_load __LINE__
+__SYSCALL(__NR_kexec_load, sys_kexec_load)
+
+/* kernel/module.c */
+#define __NR_init_module __LINE__
+__SYSCALL(__NR_init_module, sys_init_module)
+#define __NR_delete_module __LINE__
+__SYSCALL(__NR_delete_module, sys_delete_module)
+
+/* kernel/posix-timers.c */
+#define __NR_timer_create __LINE__
+__SYSCALL(__NR_timer_create, sys_timer_create)
+#define __NR_timer_gettime __LINE__
+__SYSCALL(__NR_timer_gettime, sys_timer_gettime)
+#define __NR_timer_getoverrun __LINE__
+__SYSCALL(__NR_timer_getoverrun, sys_timer_getoverrun)
+#define __NR_timer_settime __LINE__
+__SYSCALL(__NR_timer_settime, sys_timer_settime)
+#define __NR_timer_delete __LINE__
+__SYSCALL(__NR_timer_delete, sys_timer_delete)
+#define __NR_clock_settime __LINE__
+__SYSCALL(__NR_clock_settime, sys_clock_settime)
+#define __NR_clock_gettime __LINE__
+__SYSCALL(__NR_clock_gettime, sys_clock_gettime)
+#define __NR_clock_getres __LINE__
+__SYSCALL(__NR_clock_getres, sys_clock_getres)
+#define __NR_clock_nanosleep __LINE__
+__SYSCALL(__NR_clock_nanosleep, sys_clock_nanosleep)
+
+/* kernel/printk.c */
+#define __NR_syslog __LINE__
+__SYSCALL(__NR_syslog, sys_syslog)
+
+/* kernel/ptrace.c */
+#define __NR_ptrace __LINE__
+__SYSCALL(__NR_ptrace, sys_ptrace)
+
+/* kernel/sched.c */
+#define __NR_sched_setparam __LINE__
+__SYSCALL(__NR_sched_setparam, sys_sched_setparam)
+#define __NR_sched_setscheduler __LINE__
+__SYSCALL(__NR_sched_setscheduler, sys_sched_setscheduler)
+#define __NR_sched_getscheduler __LINE__
+__SYSCALL(__NR_sched_getscheduler, sys_sched_getscheduler)
+#define __NR_sched_getparam __LINE__
+__SYSCALL(__NR_sched_getparam, sys_sched_getparam)
+#define __NR_sched_setaffinity __LINE__
+__SYSCALL(__NR_sched_setaffinity, sys_sched_setaffinity)
+#define __NR_sched_getaffinity __LINE__
+__SYSCALL(__NR_sched_getaffinity, sys_sched_getaffinity)
+#define __NR_sched_yield __LINE__
+__SYSCALL(__NR_sched_yield, sys_sched_yield)
+#define __NR_sched_get_priority_max __LINE__
+__SYSCALL(__NR_sched_get_priority_max, sys_sched_get_priority_max)
+#define __NR_sched_get_priority_min __LINE__
+__SYSCALL(__NR_sched_get_priority_min, sys_sched_get_priority_min)
+#define __NR_sched_rr_get_interval __LINE__
+__SYSCALL(__NR_sched_rr_get_interval, sys_sched_rr_get_interval)
+
+/* kernel/signal.c */
+#define __NR_restart_syscall __LINE__
+__SYSCALL(__NR_restart_syscall, sys_restart_syscall)
+#define __NR_kill __LINE__
+__SYSCALL(__NR_kill, sys_kill)
+#define __NR_tkill __LINE__
+__SYSCALL(__NR_tkill, sys_tkill)
+#define __NR_tgkill __LINE__
+__SYSCALL(__NR_tgkill, sys_tgkill)
+#define __NR_sigaltstack __LINE__
+__SYSCALL(__NR_sigaltstack, sys_sigaltstack)
+#define __NR_rt_sigsuspend __LINE__
+__SYSCALL(__NR_rt_sigsuspend, sys_rt_sigsuspend) /* __ARCH_WANT_SYS_RT_SIGSUSPEND */
+#define __NR_rt_sigaction __LINE__
+__SYSCALL(__NR_rt_sigaction, sys_rt_sigaction) /* __ARCH_WANT_SYS_RT_SIGACTION */
+#define __NR_rt_sigprocmask __LINE__
+__SYSCALL(__NR_rt_sigprocmask, sys_rt_sigprocmask)
+#define __NR_rt_sigpending __LINE__
+__SYSCALL(__NR_rt_sigpending, sys_rt_sigpending)
+#define __NR_rt_sigtimedwait __LINE__
+__SYSCALL(__NR_rt_sigtimedwait, sys_rt_sigtimedwait)
+#define __NR_rt_sigqueueinfo __LINE__
+__SYSCALL(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo)
+#define __NR_rt_sigreturn __LINE__
+__SYSCALL(__NR_rt_sigreturn, sys_rt_sigreturn) /* sys_rt_sigreturn_wrapper, */
+
+/* kernel/sys.c */
+#define __NR_setpriority __LINE__
+__SYSCALL(__NR_setpriority, sys_setpriority)
+#define __NR_getpriority __LINE__
+__SYSCALL(__NR_getpriority, sys_getpriority)
+#define __NR_reboot __LINE__
+__SYSCALL(__NR_reboot, sys_reboot)
+#define __NR_setregid __LINE__
+__SYSCALL(__NR_setregid, sys_setregid)
+#define __NR_setgid __LINE__
+__SYSCALL(__NR_setgid, sys_setgid)
+#define __NR_setreuid __LINE__
+__SYSCALL(__NR_setreuid, sys_setreuid)
+#define __NR_setuid __LINE__
+__SYSCALL(__NR_setuid, sys_setuid)
+#define __NR_setresuid __LINE__
+__SYSCALL(__NR_setresuid, sys_setresuid)
+#define __NR_getresuid __LINE__
+__SYSCALL(__NR_getresuid, sys_getresuid)
+#define __NR_setresgid __LINE__
+__SYSCALL(__NR_setresgid, sys_setresgid)
+#define __NR_getresgid __LINE__
+__SYSCALL(__NR_getresgid, sys_getresgid)
+#define __NR_setfsuid __LINE__
+__SYSCALL(__NR_setfsuid, sys_setfsuid)
+#define __NR_setfsgid __LINE__
+__SYSCALL(__NR_setfsgid, sys_setfsgid)
+#define __NR_times __LINE__
+__SYSCALL(__NR_times, sys_times)
+#define __NR_setpgid __LINE__
+__SYSCALL(__NR_setpgid, sys_setpgid)
+#define __NR_getpgid __LINE__
+__SYSCALL(__NR_getpgid, sys_getpgid)
+#define __NR_getsid __LINE__
+__SYSCALL(__NR_getsid, sys_getsid)
+#define __NR_setsid __LINE__
+__SYSCALL(__NR_setsid, sys_setsid)
+#define __NR_getgroups __LINE__
+__SYSCALL(__NR_getgroups, sys_getgroups)
+#define __NR_setgroups __LINE__
+__SYSCALL(__NR_setgroups, sys_setgroups)
+#define __NR_uname __LINE__
+__SYSCALL(__NR_uname, sys_newuname)
+#define __NR_sethostname __LINE__
+__SYSCALL(__NR_sethostname, sys_sethostname)
+#define __NR_setdomainname __LINE__
+__SYSCALL(__NR_setdomainname, sys_setdomainname)
+#define __NR_getrlimit __LINE__
+__SYSCALL(__NR_getrlimit, sys_getrlimit)
+#define __NR_setrlimit __LINE__
+__SYSCALL(__NR_setrlimit, sys_setrlimit)
+#define __NR_getrusage __LINE__
+__SYSCALL(__NR_getrusage, sys_getrusage)
+#define __NR_umask __LINE__
+__SYSCALL(__NR_umask, sys_umask)
+#define __NR_prctl __LINE__
+__SYSCALL(__NR_prctl, sys_prctl)
+#define __NR_getcpu __LINE__
+__SYSCALL(__NR_getcpu, sys_getcpu)
+
+/* kernel/time.c */
+#define __NR_gettimeofday __LINE__
+__SYSCALL(__NR_gettimeofday, sys_gettimeofday)
+#define __NR_settimeofday __LINE__
+__SYSCALL(__NR_settimeofday, sys_settimeofday)
+#define __NR_adjtimex __LINE__
+__SYSCALL(__NR_adjtimex, sys_adjtimex)
+
+/* kernel/timer.c */
+#define __NR_getpid __LINE__
+__SYSCALL(__NR_getpid, sys_getpid)
+#define __NR_getppid __LINE__
+__SYSCALL(__NR_getppid, sys_getppid)
+#define __NR_getuid __LINE__
+__SYSCALL(__NR_getuid, sys_getuid)
+#define __NR_geteuid __LINE__
+__SYSCALL(__NR_geteuid, sys_geteuid)
+#define __NR_getgid __LINE__
+__SYSCALL(__NR_getgid, sys_getgid)
+#define __NR_getegid __LINE__
+__SYSCALL(__NR_getegid, sys_getegid)
+#define __NR_gettid __LINE__
+__SYSCALL(__NR_gettid, sys_gettid)
+#define __NR_sysinfo __LINE__
+__SYSCALL(__NR_sysinfo, sys_sysinfo)
+
+/* ipc/mqueue.c */
+#define __NR_mq_open __LINE__
+__SYSCALL(__NR_mq_open, sys_mq_open)
+#define __NR_mq_unlink __LINE__
+__SYSCALL(__NR_mq_unlink, sys_mq_unlink)
+#define __NR_mq_timedsend __LINE__
+__SYSCALL(__NR_mq_timedsend, sys_mq_timedsend)
+#define __NR_mq_timedreceive __LINE__
+__SYSCALL(__NR_mq_timedreceive, sys_mq_timedreceive)
+#define __NR_mq_notify __LINE__
+__SYSCALL(__NR_mq_notify, sys_mq_notify)
+#define __NR_mq_getsetattr __LINE__
+__SYSCALL(__NR_mq_getsetattr, sys_mq_getsetattr)
+
+/* ipc/msg.c */
+#define __NR_msgget __LINE__
+__SYSCALL(__NR_msgget, sys_msgget)
+#define __NR_msgctl __LINE__
+__SYSCALL(__NR_msgctl, sys_msgctl)
+#define __NR_msgrcv __LINE__
+__SYSCALL(__NR_msgrcv, sys_msgrcv)
+#define __NR_msgsnd __LINE__
+__SYSCALL(__NR_msgsnd, sys_msgsnd)
+
+/* ipc/sem.c */
+#define __NR_semget __LINE__
+__SYSCALL(__NR_semget, sys_semget)
+#define __NR_semctl __LINE__
+__SYSCALL(__NR_semctl, sys_semctl)
+#define __NR_semtimedop __LINE__
+__SYSCALL(__NR_semtimedop, sys_semtimedop)
+#define __NR_semop __LINE__
+__SYSCALL(__NR_semop, sys_semop)
+
+/* ipc/shm.c */
+#define __NR_shmget __LINE__
+__SYSCALL(__NR_shmget, sys_shmget)
+#define __NR_shmctl __LINE__
+__SYSCALL(__NR_shmctl, sys_shmctl)
+#define __NR_shmat __LINE__
+__SYSCALL(__NR_shmat, sys_shmat)
+#define __NR_shmdt __LINE__
+__SYSCALL(__NR_shmdt, sys_shmdt)
+
+/* net/socket.c */
+#define __NR_socket __LINE__
+__SYSCALL(__NR_socket, sys_socket)
+#define __NR_socketpair __LINE__
+__SYSCALL(__NR_socketpair, sys_socketpair)
+#define __NR_bind __LINE__
+__SYSCALL(__NR_bind, sys_bind)
+#define __NR_listen __LINE__
+__SYSCALL(__NR_listen, sys_listen)
+#define __NR_accept __LINE__
+__SYSCALL(__NR_accept, sys_accept)
+#define __NR_connect __LINE__
+__SYSCALL(__NR_connect, sys_connect)
+#define __NR_getsockname __LINE__
+__SYSCALL(__NR_getsockname, sys_getsockname)
+#define __NR_getpeername __LINE__
+__SYSCALL(__NR_getpeername, sys_getpeername)
+#define __NR_sendto __LINE__
+__SYSCALL(__NR_sendto, sys_sendto)
+#define __NR_recvfrom __LINE__
+__SYSCALL(__NR_recvfrom, sys_recvfrom)
+#define __NR_setsockopt __LINE__
+__SYSCALL(__NR_setsockopt, sys_setsockopt)
+#define __NR_getsockopt __LINE__
+__SYSCALL(__NR_getsockopt, sys_getsockopt)
+#define __NR_shutdown __LINE__
+__SYSCALL(__NR_shutdown, sys_shutdown)
+#define __NR_sendmsg __LINE__
+__SYSCALL(__NR_sendmsg, sys_sendmsg)
+#define __NR_recvmsg __LINE__
+__SYSCALL(__NR_recvmsg, sys_recvmsg)
+
+/* mm/filemap.c */
+#define __NR_readahead __LINE__
+__SYSCALL(__NR_readahead, sys_readahead)
+
+/* mm/nommu.c, also with MMU */
+#define __NR_brk __LINE__
+__SYSCALL(__NR_brk, sys_brk)
+#define __NR_munmap __LINE__
+__SYSCALL(__NR_munmap, sys_munmap)
+#define __NR_mremap __LINE__
+__SYSCALL(__NR_mremap, sys_mremap)
+
+/* security/keys/keyctl.c */
+#define __NR_add_key __LINE__
+__SYSCALL(__NR_add_key, sys_add_key)
+#define __NR_request_key __LINE__
+__SYSCALL(__NR_request_key, sys_request_key)
+#define __NR_keyctl __LINE__
+__SYSCALL(__NR_keyctl, sys_keyctl)
+
+/* arch/example/kernel/sys_example.c */
+#define __NR_clone __LINE__
+__SYSCALL(__NR_clone, sys_clone)	/* .long sys_clone_wrapper */
+#define __NR_execve __LINE__
+__SYSCALL(__NR_execve, sys_execve)	/* .long sys_execve_wrapper */
+
+#define __NR3264_mmap __LINE__
+__SC_3264(__NR3264_mmap, sys_mmap2, sys_mmap)
+/* mm/fadvise.c */
+#define __NR3264_fadvise64 __LINE__
+__SC_3264(__NR3264_fadvise64, sys_fadvise64_64, sys_fadvise64)
+
+/* mm/, CONFIG_MMU only */
+#ifndef __ARCH_NOMMU
+#define __NR_swapon __LINE__
+__SYSCALL(__NR_swapon, sys_swapon)
+#define __NR_swapoff __LINE__
+__SYSCALL(__NR_swapoff, sys_swapoff)
+#define __NR_mprotect __LINE__
+__SYSCALL(__NR_mprotect, sys_mprotect)
+#define __NR_msync __LINE__
+__SYSCALL(__NR_msync, sys_msync)
+#define __NR_mlock __LINE__
+__SYSCALL(__NR_mlock, sys_mlock)
+#define __NR_munlock __LINE__
+__SYSCALL(__NR_munlock, sys_munlock)
+#define __NR_mlockall __LINE__
+__SYSCALL(__NR_mlockall, sys_mlockall)
+#define __NR_munlockall __LINE__
+__SYSCALL(__NR_munlockall, sys_munlockall)
+#define __NR_mincore __LINE__
+__SYSCALL(__NR_mincore, sys_mincore)
+#define __NR_madvise __LINE__
+__SYSCALL(__NR_madvise, sys_madvise)
+#define __NR_remap_file_pages __LINE__
+__SYSCALL(__NR_remap_file_pages, sys_remap_file_pages)
+#define __NR_mbind __LINE__
+__SYSCALL(__NR_mbind, sys_mbind)
+#define __NR_get_mempolicy __LINE__
+__SYSCALL(__NR_get_mempolicy, sys_get_mempolicy)
+#define __NR_set_mempolicy __LINE__
+__SYSCALL(__NR_set_mempolicy, sys_set_mempolicy)
+#define __NR_migrate_pages __LINE__
+__SYSCALL(__NR_migrate_pages, sys_migrate_pages)
+#define __NR_move_pages __LINE__
+__SYSCALL(__NR_move_pages, sys_move_pages)
+#endif
+
+/*
+ * All syscalls below here should go away really,
+ * these are provided for both review and as a porting
+ * help for the C library version.
+*
+ * Last chance: are any of these important enought to
+ * enable by default?
+ */
+#ifdef __ARCH_WANT_SYSCALL_NO_AT
+#define __NR_open __LINE__
+__SYSCALL(__NR_open, sys_open)
+#define __NR_link __LINE__
+__SYSCALL(__NR_link, sys_link)
+#define __NR_unlink __LINE__
+__SYSCALL(__NR_unlink, sys_unlink)
+#define __NR_mknod __LINE__
+__SYSCALL(__NR_mknod, sys_mknod)
+#define __NR_chmod __LINE__
+__SYSCALL(__NR_chmod, sys_chmod)
+#define __NR_chown __LINE__
+__SYSCALL(__NR_chown, sys_chown)
+#define __NR_mkdir __LINE__
+__SYSCALL(__NR_mkdir, sys_mkdir)
+#define __NR_rmdir __LINE__
+__SYSCALL(__NR_rmdir, sys_rmdir)
+#define __NR_lchown __LINE__
+__SYSCALL(__NR_lchown, sys_lchown)
+#define __NR_access __LINE__
+__SYSCALL(__NR_access, sys_access)
+#define __NR_rename __LINE__
+__SYSCALL(__NR_rename, sys_rename)
+#define __NR_readlink __LINE__
+__SYSCALL(__NR_readlink, sys_readlink)
+#define __NR_symlink __LINE__
+__SYSCALL(__NR_symlink, sys_symlink)
+#define __NR_utimes __LINE__
+__SYSCALL(__NR_utimes, sys_utimes)
+#define __NR3264_stat __LINE__
+__SC_3264(__NR3264_stat, sys_stat64, sys_newstat)
+#define __NR3264_lstat __LINE__
+__SC_3264(__NR3264_lstat, sys_lstat64, sys_newlstat)
+#endif /* __ARCH_WANT_SYSCALL_NO_AT */
+
+#ifdef __ARCH_WANT_SYSCALL_NO_FLAGS
+#define __NR_pipe __LINE__
+__SYSCALL(__NR_pipe, sys_pipe)
+#define __NR_dup2 __LINE__
+__SYSCALL(__NR_dup2, sys_dup2)
+#define __NR_epoll_create __LINE__
+__SYSCALL(__NR_epoll_create, sys_epoll_create)
+#define __NR_inotify_init __LINE__
+__SYSCALL(__NR_inotify_init, sys_inotify_init)
+#define __NR_eventfd __LINE__
+__SYSCALL(__NR_eventfd, sys_eventfd)
+#define __NR_signalfd __LINE__
+__SYSCALL(__NR_signalfd, sys_signalfd)
+#endif /* __ARCH_WANT_SYSCALL_NO_FLAGS */
+
+#if __BITS_PER_LONG == 32 && defined(__ARCH_WANT_SYSCALL_OFF_T)
+#define __NR_sendfile __LINE__
+__SYSCALL(__NR_sendfile, sys_sendfile)
+#define __NR_ftruncate __LINE__
+__SYSCALL(__NR_ftruncate, sys_ftruncate)
+#define __NR_truncate __LINE__
+__SYSCALL(__NR_truncate, sys_truncate)
+#define __NR_stat __LINE__
+__SYSCALL(__NR_stat, sys_newstat)
+#define __NR_lstat __LINE__
+__SYSCALL(__NR_lstat, sys_newlstat)
+#define __NR_fstat __LINE__
+__SYSCALL(__NR_fstat, sys_newfstat)
+#define __NR_fcntl __LINE__
+__SYSCALL(__NR_fcntl, sys_fcntl)
+#define __NR_fadvise64 __LINE__
+#define __ARCH_WANT_SYS_FADVISE64
+__SYSCALL(__NR_fadvise64, sys_fadvise64)
+#define __NR_newfstatat __LINE__
+#define __ARCH_WANT_SYS_NEWFSTATAT
+__SYSCALL(__NR_newfstatat, sys_newfstatat)
+#define __NR_fstatfs __LINE__
+__SYSCALL(__NR_fstatfs, sys_fstatfs)
+#define __NR_statfs __LINE__
+__SYSCALL(__NR_statfs, sys_statfs)
+#define __NR_getdents __LINE__
+__SYSCALL(__NR_getdents, sys_getdents)
+#define __NR_lseek __LINE__
+__SYSCALL(__NR_lseek, sys_lseek)
+#define __NR_mmap __LINE__
+__SYSCALL(__NR_mmap, sys_mmap)
+#endif /* 32 bit off_t syscalls */
+
+#ifdef __ARCH_WANT_SYSCALL_DEPRECATED
+#define __NR_alarm __LINE__
+#define __ARCH_WANT_SYS_ALARM
+__SYSCALL(__NR_alarm, sys_alarm)
+#define __NR_getpgrp __LINE__
+#define __ARCH_WANT_SYS_GETPGRP
+__SYSCALL(__NR_getpgrp, sys_getpgrp)
+#define __NR_pause __LINE__
+#define __ARCH_WANT_SYS_PAUSE
+__SYSCALL(__NR_pause, sys_pause)
+#define __NR_time __LINE__
+#define __ARCH_WANT_SYS_TIME
+__SYSCALL(__NR_time, sys_time)
+#define __NR_utime __LINE__
+#define __ARCH_WANT_SYS_UTIME
+__SYSCALL(__NR_utime, sys_utime)
+
+#define __NR_creat __LINE__
+__SYSCALL(__NR_creat, sys_creat)
+#define __NR_futimesat __LINE__
+__SYSCALL(__NR_futimesat, sys_futimesat)
+#define __NR_poll __LINE__
+__SYSCALL(__NR_poll, sys_poll)
+#define __NR_select __LINE__
+__SYSCALL(__NR_select, sys_select)
+#define __NR_epoll_wait __LINE__
+__SYSCALL(__NR_epoll_wait, sys_epoll_wait)
+#define __NR_ustat __LINE__
+__SYSCALL(__NR_ustat, sys_ustat)
+#define __NR_vfork __LINE__
+__SYSCALL(__NR_vfork, sys_vfork)
+#define __NR_wait4 __LINE__
+__SYSCALL(__NR_wait4, sys_wait4)
+
+#define __NR_fork __LINE__
+#ifdef CONFIG_MMU
+__SYSCALL(__NR_fork, sys_fork)
+#else
+__SYSCALL(__NR_fork, sys_ni_syscall)
+#endif /* CONFIG_MMU */
+#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */
+
+#define __NR_syscalls __LINE__
+
+/*
+ * 32 bit systems traditionally used different
+ * syscalls for off_t and loff_t arguments, while
+ * 64 bit systems only need the off_t version.
+ * For new 32 bit platforms, there is no need to
+ * implement the old 32 bit off_t syscalls, so
+ * they take different names.
+ * Here we map the numbers so that both versions
+ * use the same syscall table layout.
+ */
+#if __BITS_PER_LONG == 64
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_truncate
+#define __NR_getdents __NR3264_getdents
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_newfstatat __NR3264_fstatat
+#define __NR_fstat __NR3264_fstat
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
+#ifdef __NR3264_stat
+#define __NR_stat __NR3264_stat
+#define __NR_lstat __NR3264_lstat
+#endif
+#else
+#define __NR_fcntl64 __NR3264_fcntl
+#define __NR_statfs64 __NR3264_statfs
+#define __NR_fstatfs64 __NR3264_fstatfs
+#define __NR_truncate64 __NR3264_truncate
+#define __NR_ftruncate64 __NR3264_truncate
+#define __NR_getdents64 __NR3264_getdents
+#define __NR_llseek __NR3264_lseek
+#define __NR_sendfile64 __NR3264_sendfile
+#define __NR_fstatat64 __NR3264_fstatat
+#define __NR_fstat64 __NR3264_fstat
+#define __NR_mmap2 __NR3264_mmap
+#define __NR_fadvise64_64 __NR3264_fadvise64
+#ifdef __NR3264_stat
+#define __NR_stat64 __NR3264_stat
+#define __NR_lstat64 __NR3264_lstat
+#endif
+#endif
+
+#ifdef __KERNEL__
+
+/*
+ * These are required system calls, we should
+ * invert the logic eventually and let them
+ * be selected by default.
+ */
+#if __BITS_PER_LONG == 32
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_LLSEEK
+#endif
+#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+#ifndef cond_syscall
+#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_GENERIC_UNISTD_H */
diff --git a/kernel/Makefile b/kernel/Makefile
index e4791b3..717761b 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -93,6 +93,7 @@ obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
 obj-$(CONFIG_FUNCTION_TRACER) += trace/
 obj-$(CONFIG_TRACING) += trace/
 obj-$(CONFIG_SMP) += sched_cpupri.o
+obj-$(CONFIG_GENERIC_SYSCALL_TABLE) += syscall_table.o
 
 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
 # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
diff --git a/kernel/syscall_table.c b/kernel/syscall_table.c
new file mode 100644
index 0000000..a2da111
--- /dev/null
+++ b/kernel/syscall_table.c
@@ -0,0 +1,12 @@
+#include <linux/syscalls.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] (call),
+
+void *sys_call_table[] = {
+#include <asm/unistd.h>
+};
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 60d00d1..28b9e3e 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -14,6 +14,57 @@ cat << EOF
 #include <asm/types.h>
 #include <asm/unistd.h>
 
+/* *at */
+#define __IGNORE_open		/* openat */
+#define __IGNORE_link		/* linkat */
+#define __IGNORE_unlink		/* unlinkat */
+#define __IGNORE_mknod		/* mknodat */
+#define __IGNORE_chmod		/* fchmodat */
+#define __IGNORE_chown		/* fchownat */
+#define __IGNORE_mkdir		/* mkdirat */
+#define __IGNORE_rmdir		/* unlinkat */
+#define __IGNORE_lchown		/* fchownat */
+#define __IGNORE_access		/* faccessat */
+#define __IGNORE_rename		/* renameat */
+#define __IGNORE_readlink	/* readlinkat */
+#define __IGNORE_symlink	/* symlinkat */
+#define __IGNORE_utimes		/* futimesat */
+#if BITS_PER_LONG == 64
+#define __IGNORE_stat		/* fstatat */
+#define __IGNORE_lstat		/* fstatat */
+#else
+#define __IGNORE_stat64		/* fstatat64 */
+#define __IGNORE_lstat64	/* fstatat64 */
+#endif
+
+/* CLOEXEC flag */
+#define __IGNORE_pipe		/* pipe2 */
+#define __IGNORE_dup2		/* dup3 */
+#define __IGNORE_epoll_create	/* epoll_create1 */
+#define __IGNORE_inotify_init	/* inotify_init1 */
+#define __IGNORE_eventfd	/* eventfd2 */
+#define __IGNORE_signalfd	/* signalfd4 */
+
+/* MMU */
+#ifndef CONFIG_MMU
+#define __IGNORE_madvise
+#define __IGNORE_mbind
+#define __IGNORE_mincore
+#define __IGNORE_mlock
+#define __IGNORE_mlockall
+#define __IGNORE_munlock
+#define __IGNORE_munlockall
+#define __IGNORE_mprotect
+#define __IGNORE_msync
+#define __IGNORE_migrate_pages
+#define __IGNORE_move_pages
+#define __IGNORE_remap_file_pages
+#define __IGNORE_get_mempolicy
+#define __IGNORE_set_mempolicy
+#define __IGNORE_swapoff
+#define __IGNORE_swapon
+#endif
+
 /* System calls for 32-bit kernels only */
 #if BITS_PER_LONG == 64
 #define __IGNORE_sendfile64
@@ -27,6 +78,24 @@ cat << EOF
 #define __IGNORE_fstatat64
 #define __IGNORE_fstatfs64
 #define __IGNORE_statfs64
+#define __IGNORE_getdents64
+#define __IGNORE_llseek
+#define __IGNORE_mmap2
+#else
+#define __IGNORE_sendfile
+#define __IGNORE_ftruncate
+#define __IGNORE_truncate
+#define __IGNORE_stat
+#define __IGNORE_lstat
+#define __IGNORE_fstat
+#define __IGNORE_fcntl
+#define __IGNORE_fadvise64
+#define __IGNORE_newfstatat
+#define __IGNORE_fstatfs
+#define __IGNORE_statfs
+#define __IGNORE_getdents
+#define __IGNORE_lseek
+#define __IGNORE_mmap
 #endif
 
 /* i386-specific or historical system calls */
@@ -44,7 +113,6 @@ cat << EOF
 #define __IGNORE_idle
 #define __IGNORE_modify_ldt
 #define __IGNORE_ugetrlimit
-#define __IGNORE_mmap2
 #define __IGNORE_vm86
 #define __IGNORE_vm86old
 #define __IGNORE_set_thread_area
@@ -55,7 +123,6 @@ cat << EOF
 #define __IGNORE_oldlstat
 #define __IGNORE_oldolduname
 #define __IGNORE_olduname
-#define __IGNORE_umount2
 #define __IGNORE_umount
 #define __IGNORE_waitpid
 #define __IGNORE_stime
@@ -75,9 +142,12 @@ cat << EOF
 #define __IGNORE__llseek
 #define __IGNORE__newselect
 #define __IGNORE_create_module
-#define __IGNORE_delete_module
 #define __IGNORE_query_module
 #define __IGNORE_get_kernel_syms
+#define __IGNORE_sysfs
+#define __IGNORE_uselib
+#define __IGNORE__sysctl
+
 /* ... including the "new" 32-bit uid syscalls */
 #define __IGNORE_lchown32
 #define __IGNORE_getuid32
@@ -99,6 +169,23 @@ cat << EOF
 #define __IGNORE_setfsuid32
 #define __IGNORE_setfsgid32
 
+/* these can be expressed using other calls */
+#define __IGNORE_alarm		/* setitimer */
+#define __IGNORE_creat		/* open */
+#define __IGNORE_fork		/* clone */
+#define __IGNORE_futimesat	/* utimensat */
+#define __IGNORE_getpgrp	/* getpgid */
+#define __IGNORE_pause		/* sigsuspend */
+#define __IGNORE_poll		/* ppoll */
+#define __IGNORE_select		/* pselect6 */
+#define __IGNORE_epoll_wait	/* epoll_pwait */
+#define __IGNORE_time		/* gettimeofday */
+#define __IGNORE_uname		/* newuname */
+#define __IGNORE_ustat		/* statfs */
+#define __IGNORE_utime		/* utimes */
+#define __IGNORE_vfork		/* clone */
+#define __IGNORE_wait4		/* waitid */
+
 /* sync_file_range had a stupid ABI. Allow sync_file_range2 instead */
 #ifdef __NR_sync_file_range2
 #define __IGNORE_sync_file_range

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Will Newton]

On Wed, Apr 1, 2009 at 3:11 PM, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:

> I've spent more time on my asm-generic patches and believe I now
> have an unistd.h implementation that can be used by the new
> architectures (score and microblaze) so they don't have to go
> through the error-prone process of coming up with their own lists.

I appreciate your work on this, it should make porting to a new arch
much less error-prone.

> It would be good if more people could in particular look over the
> system call lists. I have left the syscalls that I think should
> be dropped in #ifdef __ARCH_WANT_SYSCALL_{DEPRECATED,NO_AT,NO_FLAGS,OFF_T}
> so that it becomes easy to reenable them temporarily while porting
> the libc, and to easily see which ones get left out.
>
> I have also changed checksyscalls.sh to stop complaining when
> the old syscalls are not present.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> ---
>  include/asm-generic/posix_types.h |  162 ++++++
>  include/asm-generic/types.h       |   63 ++
>  include/asm-generic/unistd.h      |  829 +++++++++++++++++++++++++++++
>  kernel/Makefile                   |    1 +
>  kernel/syscall_table.c            |   12 +
>  scripts/checksyscalls.sh          |   93 +++-
>  6 files changed, 1157 insertions(+), 3 deletions(-)
>
>
> diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
> new file mode 100644
> index 0000000..4772f74
> --- /dev/null
> +++ b/include/asm-generic/posix_types.h
> @@ -0,0 +1,162 @@
> +#ifndef __ASM_GENERIC_POSIX_TYPES_H
> +#define __ASM_GENERIC_POSIX_TYPES_H
> +
> +#include <asm/types.h>
> +
> +/*
> + * This file is generally used by user-level software, so you need to
> + * be a little careful about namespace pollution etc.
> + *
> + * First the types that are often defined in different ways across
> + * architectures, so that you can override them.
> + */
> +
> +#ifndef __kernel_ino_t
> +typedef unsigned long  __kernel_ino_t;
> +#endif
> +
> +#ifndef __kernel_mode_t
> +typedef unsigned int   __kernel_mode_t;
> +#endif
> +
> +#ifndef __kernel_nlink_t
> +typedef unsigned long  __kernel_nlink_t;
> +#endif
> +
> +#ifndef __kernel_pid_t
> +typedef int            __kernel_pid_t;
> +#endif
> +
> +#ifndef __kernel_ipc_pid_t
> +typedef int            __kernel_ipc_pid_t;
> +#endif
> +
> +#ifndef __kernel_uid_t
> +typedef unsigned int   __kernel_uid_t;
> +typedef unsigned int   __kernel_gid_t;
> +#endif
> +
> +#ifndef __kernel_suseconds_t
> +typedef long           __kernel_suseconds_t;
> +#endif
> +
> +#ifndef __kernel_daddr_t
> +typedef int            __kernel_daddr_t;
> +#endif
> +
> +#ifndef __kernel_uid32_t
> +typedef __kernel_uid_t __kernel_uid32_t;
> +typedef __kernel_gid_t __kernel_gid32_t;
> +#endif
> +
> +#ifndef __kernel_old_uid_t
> +typedef __kernel_uid_t __kernel_old_uid_t;
> +typedef __kernel_gid_t __kernel_old_gid_t;
> +#endif
> +
> +#ifndef __kernel_old_dev_t
> +typedef unsigned int   __kernel_old_dev_t;
> +#endif
> +
> +#ifndef __kernel_size_t
> +#if __BITS_PER_LONG != 64
> +typedef unsigned int   __kernel_size_t;
> +typedef int            __kernel_ssize_t;
> +typedef int            __kernel_ptrdiff_t;
> +#else
> +typedef unsigned long  __kernel_size_t;
> +typedef long           __kernel_ssize_t;
> +typedef long           __kernel_ptrdiff_t;
> +#endif
> +#endif
> +
> +/*
> + * anything below here should be completely generic
> + */
> +typedef long           __kernel_off_t;
> +typedef long long      __kernel_loff_t;
> +typedef long           __kernel_time_t;
> +typedef long           __kernel_clock_t;
> +typedef int            __kernel_timer_t;
> +typedef int            __kernel_clockid_t;
> +typedef char *         __kernel_caddr_t;
> +typedef unsigned short __kernel_uid16_t;
> +typedef unsigned short __kernel_gid16_t;
> +
> +typedef struct {
> +       int     val[2];
> +} __kernel_fsid_t;
> +
> +#ifdef __KERNEL__
> +
> +#undef __FD_SET
> +static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       __fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
> +}
> +
> +#undef __FD_CLR
> +static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       __fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
> +}
> +
> +#undef __FD_ISSET
> +static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
> +}
> +
> +/*
> + * This will unroll the loop for the normal constant case (8 ints,
> + * for a 256-bit fd_set)
> + */
> +#undef __FD_ZERO
> +static inline void __FD_ZERO(__kernel_fd_set *__p)
> +{
> +       unsigned long *__tmp = __p->fds_bits;
> +       int __i;
> +
> +       if (__builtin_constant_p(__FDSET_LONGS)) {
> +               switch (__FDSET_LONGS) {
> +               case 16:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       __tmp[ 4] = 0; __tmp[ 5] = 0;
> +                       __tmp[ 6] = 0; __tmp[ 7] = 0;
> +                       __tmp[ 8] = 0; __tmp[ 9] = 0;
> +                       __tmp[10] = 0; __tmp[11] = 0;
> +                       __tmp[12] = 0; __tmp[13] = 0;
> +                       __tmp[14] = 0; __tmp[15] = 0;
> +                       return;
> +
> +               case 8:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       __tmp[ 4] = 0; __tmp[ 5] = 0;
> +                       __tmp[ 6] = 0; __tmp[ 7] = 0;
> +                       return;
> +
> +               case 4:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       return;
> +               }
> +       }
> +       __i = __FDSET_LONGS;
> +       while (__i) {
> +               __i--;
> +               *__tmp = 0;
> +               __tmp++;
> +       }
> +}
> +
> +#endif /* __KERNEL__ */
> +
> +#endif /* __ASM_GENERIC_POSIX_TYPES_H */
> diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
> new file mode 100644
> index 0000000..147b553
> --- /dev/null
> +++ b/include/asm-generic/types.h
> @@ -0,0 +1,63 @@
> +#ifndef _ASM_GENERIC_TYPES_H
> +#define _ASM_GENERIC_TYPES_H
> +
> +/*
> + * int-ll64 is used practically everywhere now,
> + * so use it as a reasonable default.
> + */
> +#include <asm-generic/int-ll64.h>
> +
> +#ifndef __ASSEMBLY__
> +
> +typedef unsigned short umode_t;
> +
> +#endif /* __ASSEMBLY__ */
> +
> +/*
> + * There seems to be no way of detecting this automatically from user
> + * space, so 64 bit architectures should override this in their types.h.
> + */
> +#ifndef __BITS_PER_LONG
> +#define __BITS_PER_LONG 32
> +#endif

Why is this define required? It doesn't seem to be in any existing headers.

> +
> +/*
> + * These aren't exported outside the kernel to avoid name space clashes
> + */
> +#ifdef __KERNEL__
> +
> +#ifdef CONFIG_64BIT
> +#define BITS_PER_LONG 64
> +#else
> +#define BITS_PER_LONG 32
> +#endif /* CONFIG_64BIT */
> +
> +#if BITS_PER_LONG != __BITS_PER_LONG
> +#error cannot determine word size
> +#endif
> +
> +#ifndef __ASSEMBLY__
> +
> +/*
> + * DMA addresses may be very different from physical addresses
> + * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
> + * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
> + * physical addresses.
> + * This default defines dma_addr_t to have the same size as
> + * phys_addr_t, which is the most common way.
> + * Do not define the dma64_addr_t type, which never really
> + * worked.
> + */
> +#ifndef dma_addr_t
> +#ifdef CONFIG_PHYS_ADDR_T_64BIT
> +typedef u64 dma_addr_t;
> +#else
> +typedef u32 dma_addr_t;
> +#endif /* CONFIG_PHYS_ADDR_T_64BIT */
> +#endif /* dma_addr_t */
> +
> +#endif /* __ASSEMBLY__ */
> +
> +#endif /* __KERNEL__ */
> +
> +#endif /* _ASM_GENERIC_TYPES_H */
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Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Will Newton]

On Wed, Apr 1, 2009 at 3:11 PM, Arnd Bergmann <arnd@arndb.de> wrote:

> I've spent more time on my asm-generic patches and believe I now
> have an unistd.h implementation that can be used by the new
> architectures (score and microblaze) so they don't have to go
> through the error-prone process of coming up with their own lists.

I appreciate your work on this, it should make porting to a new arch
much less error-prone.

> It would be good if more people could in particular look over the
> system call lists. I have left the syscalls that I think should
> be dropped in #ifdef __ARCH_WANT_SYSCALL_{DEPRECATED,NO_AT,NO_FLAGS,OFF_T}
> so that it becomes easy to reenable them temporarily while porting
> the libc, and to easily see which ones get left out.
>
> I have also changed checksyscalls.sh to stop complaining when
> the old syscalls are not present.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  include/asm-generic/posix_types.h |  162 ++++++
>  include/asm-generic/types.h       |   63 ++
>  include/asm-generic/unistd.h      |  829 +++++++++++++++++++++++++++++
>  kernel/Makefile                   |    1 +
>  kernel/syscall_table.c            |   12 +
>  scripts/checksyscalls.sh          |   93 +++-
>  6 files changed, 1157 insertions(+), 3 deletions(-)
>
>
> diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
> new file mode 100644
> index 0000000..4772f74
> --- /dev/null
> +++ b/include/asm-generic/posix_types.h
> @@ -0,0 +1,162 @@
> +#ifndef __ASM_GENERIC_POSIX_TYPES_H
> +#define __ASM_GENERIC_POSIX_TYPES_H
> +
> +#include <asm/types.h>
> +
> +/*
> + * This file is generally used by user-level software, so you need to
> + * be a little careful about namespace pollution etc.
> + *
> + * First the types that are often defined in different ways across
> + * architectures, so that you can override them.
> + */
> +
> +#ifndef __kernel_ino_t
> +typedef unsigned long  __kernel_ino_t;
> +#endif
> +
> +#ifndef __kernel_mode_t
> +typedef unsigned int   __kernel_mode_t;
> +#endif
> +
> +#ifndef __kernel_nlink_t
> +typedef unsigned long  __kernel_nlink_t;
> +#endif
> +
> +#ifndef __kernel_pid_t
> +typedef int            __kernel_pid_t;
> +#endif
> +
> +#ifndef __kernel_ipc_pid_t
> +typedef int            __kernel_ipc_pid_t;
> +#endif
> +
> +#ifndef __kernel_uid_t
> +typedef unsigned int   __kernel_uid_t;
> +typedef unsigned int   __kernel_gid_t;
> +#endif
> +
> +#ifndef __kernel_suseconds_t
> +typedef long           __kernel_suseconds_t;
> +#endif
> +
> +#ifndef __kernel_daddr_t
> +typedef int            __kernel_daddr_t;
> +#endif
> +
> +#ifndef __kernel_uid32_t
> +typedef __kernel_uid_t __kernel_uid32_t;
> +typedef __kernel_gid_t __kernel_gid32_t;
> +#endif
> +
> +#ifndef __kernel_old_uid_t
> +typedef __kernel_uid_t __kernel_old_uid_t;
> +typedef __kernel_gid_t __kernel_old_gid_t;
> +#endif
> +
> +#ifndef __kernel_old_dev_t
> +typedef unsigned int   __kernel_old_dev_t;
> +#endif
> +
> +#ifndef __kernel_size_t
> +#if __BITS_PER_LONG != 64
> +typedef unsigned int   __kernel_size_t;
> +typedef int            __kernel_ssize_t;
> +typedef int            __kernel_ptrdiff_t;
> +#else
> +typedef unsigned long  __kernel_size_t;
> +typedef long           __kernel_ssize_t;
> +typedef long           __kernel_ptrdiff_t;
> +#endif
> +#endif
> +
> +/*
> + * anything below here should be completely generic
> + */
> +typedef long           __kernel_off_t;
> +typedef long long      __kernel_loff_t;
> +typedef long           __kernel_time_t;
> +typedef long           __kernel_clock_t;
> +typedef int            __kernel_timer_t;
> +typedef int            __kernel_clockid_t;
> +typedef char *         __kernel_caddr_t;
> +typedef unsigned short __kernel_uid16_t;
> +typedef unsigned short __kernel_gid16_t;
> +
> +typedef struct {
> +       int     val[2];
> +} __kernel_fsid_t;
> +
> +#ifdef __KERNEL__
> +
> +#undef __FD_SET
> +static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       __fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
> +}
> +
> +#undef __FD_CLR
> +static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       __fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
> +}
> +
> +#undef __FD_ISSET
> +static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
> +{
> +       unsigned long __tmp = __fd / __NFDBITS;
> +       unsigned long __rem = __fd % __NFDBITS;
> +       return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
> +}
> +
> +/*
> + * This will unroll the loop for the normal constant case (8 ints,
> + * for a 256-bit fd_set)
> + */
> +#undef __FD_ZERO
> +static inline void __FD_ZERO(__kernel_fd_set *__p)
> +{
> +       unsigned long *__tmp = __p->fds_bits;
> +       int __i;
> +
> +       if (__builtin_constant_p(__FDSET_LONGS)) {
> +               switch (__FDSET_LONGS) {
> +               case 16:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       __tmp[ 4] = 0; __tmp[ 5] = 0;
> +                       __tmp[ 6] = 0; __tmp[ 7] = 0;
> +                       __tmp[ 8] = 0; __tmp[ 9] = 0;
> +                       __tmp[10] = 0; __tmp[11] = 0;
> +                       __tmp[12] = 0; __tmp[13] = 0;
> +                       __tmp[14] = 0; __tmp[15] = 0;
> +                       return;
> +
> +               case 8:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       __tmp[ 4] = 0; __tmp[ 5] = 0;
> +                       __tmp[ 6] = 0; __tmp[ 7] = 0;
> +                       return;
> +
> +               case 4:
> +                       __tmp[ 0] = 0; __tmp[ 1] = 0;
> +                       __tmp[ 2] = 0; __tmp[ 3] = 0;
> +                       return;
> +               }
> +       }
> +       __i = __FDSET_LONGS;
> +       while (__i) {
> +               __i--;
> +               *__tmp = 0;
> +               __tmp++;
> +       }
> +}
> +
> +#endif /* __KERNEL__ */
> +
> +#endif /* __ASM_GENERIC_POSIX_TYPES_H */
> diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
> new file mode 100644
> index 0000000..147b553
> --- /dev/null
> +++ b/include/asm-generic/types.h
> @@ -0,0 +1,63 @@
> +#ifndef _ASM_GENERIC_TYPES_H
> +#define _ASM_GENERIC_TYPES_H
> +
> +/*
> + * int-ll64 is used practically everywhere now,
> + * so use it as a reasonable default.
> + */
> +#include <asm-generic/int-ll64.h>
> +
> +#ifndef __ASSEMBLY__
> +
> +typedef unsigned short umode_t;
> +
> +#endif /* __ASSEMBLY__ */
> +
> +/*
> + * There seems to be no way of detecting this automatically from user
> + * space, so 64 bit architectures should override this in their types.h.
> + */
> +#ifndef __BITS_PER_LONG
> +#define __BITS_PER_LONG 32
> +#endif

Why is this define required? It doesn't seem to be in any existing headers.

> +
> +/*
> + * These aren't exported outside the kernel to avoid name space clashes
> + */
> +#ifdef __KERNEL__
> +
> +#ifdef CONFIG_64BIT
> +#define BITS_PER_LONG 64
> +#else
> +#define BITS_PER_LONG 32
> +#endif /* CONFIG_64BIT */
> +
> +#if BITS_PER_LONG != __BITS_PER_LONG
> +#error cannot determine word size
> +#endif
> +
> +#ifndef __ASSEMBLY__
> +
> +/*
> + * DMA addresses may be very different from physical addresses
> + * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
> + * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
> + * physical addresses.
> + * This default defines dma_addr_t to have the same size as
> + * phys_addr_t, which is the most common way.
> + * Do not define the dma64_addr_t type, which never really
> + * worked.
> + */
> +#ifndef dma_addr_t
> +#ifdef CONFIG_PHYS_ADDR_T_64BIT
> +typedef u64 dma_addr_t;
> +#else
> +typedef u32 dma_addr_t;
> +#endif /* CONFIG_PHYS_ADDR_T_64BIT */
> +#endif /* dma_addr_t */
> +
> +#endif /* __ASSEMBLY__ */
> +
> +#endif /* __KERNEL__ */
> +
> +#endif /* _ASM_GENERIC_TYPES_H */

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

On Wednesday 01 April 2009, Will Newton wrote:
> > + * There seems to be no way of detecting this automatically from user
> > + * space, so 64 bit architectures should override this in their types.h.
> > + */
> > +#ifndef __BITS_PER_LONG
> > +#define __BITS_PER_LONG 32
> > +#endif
> 
> Why is this define required? It doesn't seem to be in any existing headers.

Unfortunately, there is no generic way to detect the word size yet,
but every architecture uses its own preprocessor macro (__x86_64__,
__s390x__, __ppc64__). We also can't use CONFIG_64BIT in an user-exported
interface header file, because the use space can also be compiled for
32 bits when the kernel uses 64 bits.

__BITS_PER_LONG is actually defined in parisc now, and was the result
of the last time we had this discussion. I'm still thinking about
making a separate <asm/bitsperlong.h> header, or a <asm/bits.h> that
also contains the respective __BIG_ENDIAN/__LITTLE_ENDIAN macros
which have the same problem. The advantage would be that other header
files (e.g. unistd.h) can known the word size without getting the
whole types.h name space.

	Arnd <><

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[H. Peter Anvin]

Arnd Bergmann wrote:
> 
> Unfortunately, there is no generic way to detect the word size yet,
> but every architecture uses its own preprocessor macro (__x86_64__,
> __s390x__, __ppc64__). We also can't use CONFIG_64BIT in an user-exported
> interface header file, because the use space can also be compiled for
> 32 bits when the kernel uses 64 bits.
> 

Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well 
as __CHAR_BIT__), although I don't know how far back it does have that. 
     If it has been with us for long enough it might be possible to 
switch over to using panarch macros.

	-hpa

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Roland McGrath]

> Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well 
> as __CHAR_BIT__), although I don't know how far back it does have that. 
>      If it has been with us for long enough it might be possible to 
> switch over to using panarch macros.

Worst case the oldest compilers had <limits.h> and 
"#if ULONG_MAX == 0xffffffffUL", though I wouldn't like
myself to be using a setup where <limits.h> got pulled in.


Thanks,
Roland

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

On Wednesday 01 April 2009, Roland McGrath wrote:
> > Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well 
> > as __CHAR_BIT__), although I don't know how far back it does have that. 
> >      If it has been with us for long enough it might be possible to 
> > switch over to using panarch macros.

For user space, we also need to consider non-gcc compilers that could have
a different set of macros. As long as we don't start relying on any new
ones besides those we already use (__x86_64__, __s390x__, __powerpc64__,
__mips64, __arch64__), we at least don't break anything accidentally.

> Worst case the oldest compilers had <limits.h> and 
> "#if ULONG_MAX == 0xffffffffUL", though I wouldn't like
> myself to be using a setup where <limits.h> got pulled in.

That would of course work with non-gcc, but we are really not allowed
to pull in <limits.h> from places like <types.h> where it would be needed
then.

	Arnd <><
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Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

On Wednesday 01 April 2009, Roland McGrath wrote:
> > Actually, gcc does have the _LP64 and __SIZEOF_POINTER__ macros (as well 
> > as __CHAR_BIT__), although I don't know how far back it does have that. 
> >      If it has been with us for long enough it might be possible to 
> > switch over to using panarch macros.

For user space, we also need to consider non-gcc compilers that could have
a different set of macros. As long as we don't start relying on any new
ones besides those we already use (__x86_64__, __s390x__, __powerpc64__,
__mips64, __arch64__), we at least don't break anything accidentally.

> Worst case the oldest compilers had <limits.h> and 
> "#if ULONG_MAX == 0xffffffffUL", though I wouldn't like
> myself to be using a setup where <limits.h> got pulled in.

That would of course work with non-gcc, but we are really not allowed
to pull in <limits.h> from places like <types.h> where it would be needed
then.

	Arnd <><

Re: [RFC] asm-generic/{unistd,types,posix_types}.h for new arch

[Arnd Bergmann]

On Wednesday 01 April 2009, Arnd Bergmann wrote:
> +/* fs/readdir.c */
> +#define __NR3264_getdents __LINE__
> +__SC_3264(__NR3264_getdents, sys_getdents64, sys_getdents)

Just noticed myself that getdents64 changed more than just off_t
(namely the file type) and should be used even on 64-bit platforms,
so I'm putting sys_getdents into my deprecated list now.

	Arnd <><