a7f290dad3
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>
84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
#ifndef __PPC64_VDSO_H__
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#define __PPC64_VDSO_H__
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#ifdef __KERNEL__
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/* Default link addresses for the vDSOs */
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#define VDSO32_LBASE 0x100000
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#define VDSO64_LBASE 0x100000
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/* Default map addresses */
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#define VDSO32_MBASE VDSO32_LBASE
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#define VDSO64_MBASE VDSO64_LBASE
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#define VDSO_VERSION_STRING LINUX_2.6.12
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/* Define if 64 bits VDSO has procedure descriptors */
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#undef VDS64_HAS_DESCRIPTORS
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#ifndef __ASSEMBLY__
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extern unsigned int vdso64_pages;
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extern unsigned int vdso32_pages;
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/* Offsets relative to thread->vdso_base */
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extern unsigned long vdso64_rt_sigtramp;
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extern unsigned long vdso32_sigtramp;
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extern unsigned long vdso32_rt_sigtramp;
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extern void vdso_init(void);
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#else /* __ASSEMBLY__ */
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#ifdef __VDSO64__
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#ifdef VDS64_HAS_DESCRIPTORS
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#define V_FUNCTION_BEGIN(name) \
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.globl name; \
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.section ".opd","a"; \
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.align 3; \
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name: \
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.quad .name,.TOC.@tocbase,0; \
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.previous; \
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.globl .name; \
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.type .name,@function; \
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.name: \
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#define V_FUNCTION_END(name) \
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.size .name,.-.name;
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#define V_LOCAL_FUNC(name) (.name)
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#else /* VDS64_HAS_DESCRIPTORS */
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#define V_FUNCTION_BEGIN(name) \
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.globl name; \
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name: \
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#define V_FUNCTION_END(name) \
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.size name,.-name;
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#define V_LOCAL_FUNC(name) (name)
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#endif /* VDS64_HAS_DESCRIPTORS */
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#endif /* __VDSO64__ */
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#ifdef __VDSO32__
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#define V_FUNCTION_BEGIN(name) \
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.globl name; \
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.type name,@function; \
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name: \
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#define V_FUNCTION_END(name) \
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.size name,.-name;
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#define V_LOCAL_FUNC(name) (name)
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#endif /* __VDSO32__ */
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* __PPC64_VDSO_H__ */
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