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authorArnd Bergmann <arnd@arndb.de>2009-05-13 22:56:25 +0000
committerArnd Bergmann <arnd@klappe2.(none)>2009-06-11 21:02:14 +0200
commitc31ae4bb4a9fa4606a74c0a4fb61b74f804e861e (patch)
tree7694b1a05bc1ac660ac26eb9997200556ccd3933
parent63b852a6b67d0820d388b0ecd0da83ccb4048b8d (diff)
downloadlinux-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.tar.gz
asm-generic: introduce asm/bitsperlong.h
This provides a reliable way for asm-generic/types.h and other files to find out if it is running on a 32 or 64 bit platform. We cannot use CONFIG_64BIT for this in headers that are included from user space because CONFIG symbols are not available there. We also cannot do it inside of asm/types.h because some headers need the word size but cannot include types.h. The solution is to introduce a new header <asm/bitsperlong.h> that defines both __BITS_PER_LONG for user space and BITS_PER_LONG for usage in the kernel. The asm-generic version falls back to 32 bit unless the architecture overrides it, which I did for all 64 bit platforms. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-rw-r--r--arch/alpha/include/asm/bitsperlong.h8
-rw-r--r--arch/alpha/include/asm/types.h3
-rw-r--r--arch/arm/include/asm/bitsperlong.h1
-rw-r--r--arch/avr32/include/asm/bitsperlong.h1
-rw-r--r--arch/blackfin/include/asm/bitsperlong.h1
-rw-r--r--arch/cris/include/asm/bitsperlong.h1
-rw-r--r--arch/frv/include/asm/bitsperlong.h1
-rw-r--r--arch/h8300/include/asm/bitsperlong.h1
-rw-r--r--arch/ia64/include/asm/bitsperlong.h8
-rw-r--r--arch/ia64/include/asm/types.h7
-rw-r--r--arch/m32r/include/asm/bitsperlong.h1
-rw-r--r--arch/m68k/include/asm/bitsperlong.h1
-rw-r--r--arch/microblaze/include/asm/bitsperlong.h1
-rw-r--r--arch/mips/include/asm/bitsperlong.h8
-rw-r--r--arch/mips/include/asm/types.h3
-rw-r--r--arch/mn10300/include/asm/bitsperlong.h1
-rw-r--r--arch/parisc/include/asm/bitsperlong.h20
-rw-r--r--arch/parisc/include/asm/types.h8
-rw-r--r--arch/powerpc/include/asm/bitsperlong.h12
-rw-r--r--arch/powerpc/include/asm/types.h9
-rw-r--r--arch/s390/include/asm/bitsperlong.h13
-rw-r--r--arch/s390/include/asm/types.h6
-rw-r--r--arch/sh/include/asm/bitsperlong.h1
-rw-r--r--arch/sparc/include/asm/bitsperlong.h13
-rw-r--r--arch/sparc/include/asm/types.h4
-rw-r--r--arch/x86/include/asm/bitsperlong.h13
-rw-r--r--arch/x86/include/asm/types.h6
-rw-r--r--arch/xtensa/include/asm/bitsperlong.h1
-rw-r--r--include/asm-generic/Kbuild1
-rw-r--r--include/asm-generic/Kbuild.asm1
-rw-r--r--include/asm-generic/bitsperlong.h32
-rw-r--r--include/asm-generic/int-l64.h2
-rw-r--r--include/asm-generic/int-ll64.h2
33 files changed, 145 insertions, 46 deletions
diff --git a/arch/alpha/include/asm/bitsperlong.h b/arch/alpha/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..ad57f786820
--- /dev/null
+++ b/arch/alpha/include/asm/bitsperlong.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_ALPHA_BITSPERLONG_H
+#define __ASM_ALPHA_BITSPERLONG_H
+
+#define __BITS_PER_LONG 64
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_ALPHA_BITSPERLONG_H */
diff --git a/arch/alpha/include/asm/types.h b/arch/alpha/include/asm/types.h
index f072f344497..bd621ecd1eb 100644
--- a/arch/alpha/include/asm/types.h
+++ b/arch/alpha/include/asm/types.h
@@ -25,9 +25,6 @@ typedef unsigned int umode_t;
* These aren't exported outside the kernel to avoid name space clashes
*/
#ifdef __KERNEL__
-
-#define BITS_PER_LONG 64
-
#ifndef __ASSEMBLY__
typedef u64 dma_addr_t;
diff --git a/arch/arm/include/asm/bitsperlong.h b/arch/arm/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/arm/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/avr32/include/asm/bitsperlong.h b/arch/avr32/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/avr32/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/blackfin/include/asm/bitsperlong.h b/arch/blackfin/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/blackfin/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/cris/include/asm/bitsperlong.h b/arch/cris/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/cris/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/frv/include/asm/bitsperlong.h b/arch/frv/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/frv/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/h8300/include/asm/bitsperlong.h b/arch/h8300/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/h8300/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/ia64/include/asm/bitsperlong.h b/arch/ia64/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..ec4db3c970b
--- /dev/null
+++ b/arch/ia64/include/asm/bitsperlong.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_IA64_BITSPERLONG_H
+#define __ASM_IA64_BITSPERLONG_H
+
+#define __BITS_PER_LONG 64
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_IA64_BITSPERLONG_H */
diff --git a/arch/ia64/include/asm/types.h b/arch/ia64/include/asm/types.h
index e36b3716e71..fbf1ed3b44c 100644
--- a/arch/ia64/include/asm/types.h
+++ b/arch/ia64/include/asm/types.h
@@ -19,10 +19,6 @@
# define __IA64_UL(x) (x)
# define __IA64_UL_CONST(x) x
-# ifdef __KERNEL__
-# define BITS_PER_LONG 64
-# endif
-
#else
# define __IA64_UL(x) ((unsigned long)(x))
# define __IA64_UL_CONST(x) x##UL
@@ -34,10 +30,7 @@ typedef unsigned int umode_t;
*/
# ifdef __KERNEL__
-#define BITS_PER_LONG 64
-
/* DMA addresses are 64-bits wide, in general. */
-
typedef u64 dma_addr_t;
# endif /* __KERNEL__ */
diff --git a/arch/m32r/include/asm/bitsperlong.h b/arch/m32r/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/m32r/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/m68k/include/asm/bitsperlong.h b/arch/m68k/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/m68k/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/microblaze/include/asm/bitsperlong.h b/arch/microblaze/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/microblaze/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/mips/include/asm/bitsperlong.h b/arch/mips/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..3e4c10a8e78
--- /dev/null
+++ b/arch/mips/include/asm/bitsperlong.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_MIPS_BITSPERLONG_H
+#define __ASM_MIPS_BITSPERLONG_H
+
+#define __BITS_PER_LONG _MIPS_SZLONG
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_MIPS_BITSPERLONG_H */
diff --git a/arch/mips/include/asm/types.h b/arch/mips/include/asm/types.h
index 7956e69a3bd..544a2854598 100644
--- a/arch/mips/include/asm/types.h
+++ b/arch/mips/include/asm/types.h
@@ -31,9 +31,6 @@ typedef unsigned short umode_t;
* These aren't exported outside the kernel to avoid name space clashes
*/
#ifdef __KERNEL__
-
-#define BITS_PER_LONG _MIPS_SZLONG
-
#ifndef __ASSEMBLY__
#if (defined(CONFIG_HIGHMEM) && defined(CONFIG_64BIT_PHYS_ADDR)) \
diff --git a/arch/mn10300/include/asm/bitsperlong.h b/arch/mn10300/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/mn10300/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/parisc/include/asm/bitsperlong.h b/arch/parisc/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..75196b415d3
--- /dev/null
+++ b/arch/parisc/include/asm/bitsperlong.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_PARISC_BITSPERLONG_H
+#define __ASM_PARISC_BITSPERLONG_H
+
+/*
+ * using CONFIG_* outside of __KERNEL__ is wrong,
+ * __LP64__ was also removed from headers, so what
+ * is the right approach on parisc?
+ * -arnd
+ */
+#if (defined(__KERNEL__) && defined(CONFIG_64BIT)) || defined (__LP64__)
+#define __BITS_PER_LONG 64
+#define SHIFT_PER_LONG 6
+#else
+#define __BITS_PER_LONG 32
+#define SHIFT_PER_LONG 5
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_PARISC_BITSPERLONG_H */
diff --git a/arch/parisc/include/asm/types.h b/arch/parisc/include/asm/types.h
index 7f5a39bfb4c..20135cc8003 100644
--- a/arch/parisc/include/asm/types.h
+++ b/arch/parisc/include/asm/types.h
@@ -14,14 +14,6 @@ typedef unsigned short umode_t;
*/
#ifdef __KERNEL__
-#ifdef CONFIG_64BIT
-#define BITS_PER_LONG 64
-#define SHIFT_PER_LONG 6
-#else
-#define BITS_PER_LONG 32
-#define SHIFT_PER_LONG 5
-#endif
-
#ifndef __ASSEMBLY__
/* Dma addresses are 32-bits wide. */
diff --git a/arch/powerpc/include/asm/bitsperlong.h b/arch/powerpc/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..5f1659032c4
--- /dev/null
+++ b/arch/powerpc/include/asm/bitsperlong.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_POWERPC_BITSPERLONG_H
+#define __ASM_POWERPC_BITSPERLONG_H
+
+#if defined(__powerpc64__)
+# define __BITS_PER_LONG 64
+#else
+# define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_POWERPC_BITSPERLONG_H */
diff --git a/arch/powerpc/include/asm/types.h b/arch/powerpc/include/asm/types.h
index 7ce27a52bb3..a5aea0ca34e 100644
--- a/arch/powerpc/include/asm/types.h
+++ b/arch/powerpc/include/asm/types.h
@@ -40,15 +40,6 @@ typedef struct {
#endif /* __ASSEMBLY__ */
#ifdef __KERNEL__
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-#ifdef __powerpc64__
-#define BITS_PER_LONG 64
-#else
-#define BITS_PER_LONG 32
-#endif
-
#ifndef __ASSEMBLY__
typedef __vector128 vector128;
diff --git a/arch/s390/include/asm/bitsperlong.h b/arch/s390/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6b235aea9c6
--- /dev/null
+++ b/arch/s390/include/asm/bitsperlong.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_S390_BITSPERLONG_H
+#define __ASM_S390_BITSPERLONG_H
+
+#ifndef __s390x__
+#define __BITS_PER_LONG 32
+#else
+#define __BITS_PER_LONG 64
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_S390_BITSPERLONG_H */
+
diff --git a/arch/s390/include/asm/types.h b/arch/s390/include/asm/types.h
index 3dc3fc22881..04d6b95a89c 100644
--- a/arch/s390/include/asm/types.h
+++ b/arch/s390/include/asm/types.h
@@ -28,12 +28,6 @@ typedef __signed__ long saddr_t;
*/
#ifdef __KERNEL__
-#ifndef __s390x__
-#define BITS_PER_LONG 32
-#else
-#define BITS_PER_LONG 64
-#endif
-
#ifndef __ASSEMBLY__
typedef u64 dma64_addr_t;
diff --git a/arch/sh/include/asm/bitsperlong.h b/arch/sh/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/sh/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/arch/sparc/include/asm/bitsperlong.h b/arch/sparc/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..40dcaa3aaa5
--- /dev/null
+++ b/arch/sparc/include/asm/bitsperlong.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_ALPHA_BITSPERLONG_H
+#define __ASM_ALPHA_BITSPERLONG_H
+
+#if defined(__sparc__) && defined(__arch64__)
+#define __BITS_PER_LONG 64
+#else
+#define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_ALPHA_BITSPERLONG_H */
+
diff --git a/arch/sparc/include/asm/types.h b/arch/sparc/include/asm/types.h
index 2237118825d..de671d73bae 100644
--- a/arch/sparc/include/asm/types.h
+++ b/arch/sparc/include/asm/types.h
@@ -21,8 +21,6 @@ typedef unsigned short umode_t;
#ifdef __KERNEL__
-#define BITS_PER_LONG 64
-
#ifndef __ASSEMBLY__
/* Dma addresses come in generic and 64-bit flavours. */
@@ -46,8 +44,6 @@ typedef unsigned short umode_t;
#ifdef __KERNEL__
-#define BITS_PER_LONG 32
-
#ifndef __ASSEMBLY__
typedef u32 dma_addr_t;
diff --git a/arch/x86/include/asm/bitsperlong.h b/arch/x86/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..b0ae1c4dc79
--- /dev/null
+++ b/arch/x86/include/asm/bitsperlong.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_X86_BITSPERLONG_H
+#define __ASM_X86_BITSPERLONG_H
+
+#ifdef __x86_64__
+# define __BITS_PER_LONG 64
+#else
+# define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_X86_BITSPERLONG_H */
+
diff --git a/arch/x86/include/asm/types.h b/arch/x86/include/asm/types.h
index e6f73632007..09b97745772 100644
--- a/arch/x86/include/asm/types.h
+++ b/arch/x86/include/asm/types.h
@@ -14,12 +14,6 @@ typedef unsigned short umode_t;
*/
#ifdef __KERNEL__
-#ifdef CONFIG_X86_32
-# define BITS_PER_LONG 32
-#else
-# define BITS_PER_LONG 64
-#endif
-
#ifndef __ASSEMBLY__
typedef u64 dma64_addr_t;
diff --git a/arch/xtensa/include/asm/bitsperlong.h b/arch/xtensa/include/asm/bitsperlong.h
new file mode 100644
index 00000000000..6dc0bb0c13b
--- /dev/null
+++ b/arch/xtensa/include/asm/bitsperlong.h
@@ -0,0 +1 @@
+#include <asm-generic/bitsperlong.h>
diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
index 460b08d51e2..cbb437875f5 100644
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@@ -1,3 +1,4 @@
+header-y += bitsperlong.h
header-y += errno-base.h
header-y += errno.h
header-y += fcntl.h
diff --git a/include/asm-generic/Kbuild.asm b/include/asm-generic/Kbuild.asm
index 70d185534b9..290910e4ede 100644
--- a/include/asm-generic/Kbuild.asm
+++ b/include/asm-generic/Kbuild.asm
@@ -9,6 +9,7 @@ unifdef-y += a.out.h
endif
unifdef-y += auxvec.h
unifdef-y += byteorder.h
+unifdef-y += bitsperlong.h
unifdef-y += errno.h
unifdef-y += fcntl.h
unifdef-y += ioctl.h
diff --git a/include/asm-generic/bitsperlong.h b/include/asm-generic/bitsperlong.h
new file mode 100644
index 00000000000..4ae54e07de8
--- /dev/null
+++ b/include/asm-generic/bitsperlong.h
@@ -0,0 +1,32 @@
+#ifndef __ASM_GENERIC_BITS_PER_LONG
+#define __ASM_GENERIC_BITS_PER_LONG
+
+/*
+ * There seems to be no way of detecting this automatically from user
+ * space, so 64 bit architectures should override this in their
+ * bitsperlong.h. In particular, an architecture that supports
+ * both 32 and 64 bit user space must not rely on CONFIG_64BIT
+ * to decide it, but rather check a compiler provided macro.
+ */
+#ifndef __BITS_PER_LONG
+#define __BITS_PER_LONG 32
+#endif
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_64BIT
+#define BITS_PER_LONG 64
+#else
+#define BITS_PER_LONG 32
+#endif /* CONFIG_64BIT */
+
+/*
+ * FIXME: The check currently breaks x86-64 build, so it's
+ * temporarily disabled. Please fix x86-64 and reenable
+ */
+#if 0 && BITS_PER_LONG != __BITS_PER_LONG
+#error Inconsistent word size. Check asm/bitsperlong.h
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_GENERIC_BITS_PER_LONG */
diff --git a/include/asm-generic/int-l64.h b/include/asm-generic/int-l64.h
index 2af9b75d77d..1ca3efc976c 100644
--- a/include/asm-generic/int-l64.h
+++ b/include/asm-generic/int-l64.h
@@ -8,6 +8,8 @@
#ifndef _ASM_GENERIC_INT_L64_H
#define _ASM_GENERIC_INT_L64_H
+#include <asm/bitsperlong.h>
+
#ifndef __ASSEMBLY__
/*
* __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
diff --git a/include/asm-generic/int-ll64.h b/include/asm-generic/int-ll64.h
index f9bc9ac29b3..f394147c073 100644
--- a/include/asm-generic/int-ll64.h
+++ b/include/asm-generic/int-ll64.h
@@ -8,6 +8,8 @@
#ifndef _ASM_GENERIC_INT_LL64_H
#define _ASM_GENERIC_INT_LL64_H
+#include <asm/bitsperlong.h>
+
#ifndef __ASSEMBLY__
/*
* __xx is ok: it doesn't pollute the POSIX namespace. Use these in the