[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel

This patch moves the vdso's to arch/powerpc, adds support for the 32
bits vdso to the 32 bits kernel, rename systemcfg (finally !), and adds
some new (still untested) routines to both vdso's: clock_gettime() with
support for CLOCK_REALTIME and CLOCK_MONOTONIC, clock_getres() (same
clocks) and get_tbfreq() for glibc to retreive the timebase frequency.

Tom,Steve: The implementation of get_tbfreq() I've done for 32 bits
returns a long long (r3, r4) not a long. This is such that if we ever
add support for >4Ghz timebases on ppc32, the userland interface won't
have to change.

I have tested gettimeofday() using some glibc patches in both ppc32 and
ppc64 kernels using 32 bits userland (I haven't had a chance to test a
64 bits userland yet, but the implementation didn't change and was
tested earlier). I haven't tested yet the new functions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 83 deletions

diff --git a/include/asm-ppc64/vdso.h b/include/asm-ppc64/vdso.h
deleted file mode 100644
index 85d8a7be25c4..000000000000
--- a/include/asm-ppc64/vdso.h
+++ /dev/null
@@ -1,83 +0,0 @@
-#ifndef __PPC64_VDSO_H__
-#define __PPC64_VDSO_H__
-
-#ifdef __KERNEL__
-
-/* Default link addresses for the vDSOs */
-#define VDSO32_LBASE    0x100000
-#define VDSO64_LBASE    0x100000
-
-/* Default map addresses */
-#define VDSO32_MBASE    VDSO32_LBASE
-#define VDSO64_MBASE    VDSO64_LBASE
-
-#define VDSO_VERSION_STRING     LINUX_2.6.12
-
-/* Define if 64 bits VDSO has procedure descriptors */
-#undef VDS64_HAS_DESCRIPTORS
-
-#ifndef __ASSEMBLY__
-
-extern unsigned int vdso64_pages;
-extern unsigned int vdso32_pages;
-
-/* Offsets relative to thread->vdso_base */
-extern unsigned long vdso64_rt_sigtramp;
-extern unsigned long vdso32_sigtramp;
-extern unsigned long vdso32_rt_sigtramp;
-
-extern void vdso_init(void);
-
-#else /* __ASSEMBLY__ */
-
-#ifdef __VDSO64__
-#ifdef VDS64_HAS_DESCRIPTORS
-#define V_FUNCTION_BEGIN(name)          \
-        .globl name;                    \
-        .section ".opd","a";            \
-        .align 3;                       \
-        name:                           \
-        .quad .name,.TOC.@tocbase,0;    \
-        .previous;                      \
-        .globl .name;                   \
-        .type .name,@function;          \
-        .name:                          \
-
-#define V_FUNCTION_END(name)            \
-        .size .name,.-.name;
-
-#define V_LOCAL_FUNC(name) (.name)
-
-#else /* VDS64_HAS_DESCRIPTORS */
-
-#define V_FUNCTION_BEGIN(name)          \
-        .globl name;                    \
-        name:                           \
-
-#define V_FUNCTION_END(name)            \
-        .size name,.-name;
-
-#define V_LOCAL_FUNC(name) (name)
-
-#endif /* VDS64_HAS_DESCRIPTORS */
-#endif /* __VDSO64__ */
-
-#ifdef __VDSO32__
-
-#define V_FUNCTION_BEGIN(name)          \
-        .globl name;                    \
-        .type name,@function;           \
-        name:                           \
-
-#define V_FUNCTION_END(name)            \
-        .size name,.-name;
-
-#define V_LOCAL_FUNC(name) (name)
-
-#endif /* __VDSO32__ */
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
-#endif /* __PPC64_VDSO_H__ */