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

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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>
This commit is contained in:
Benjamin Herrenschmidt
2005-11-11 21:15:21 +11:00
committed by Paul Mackerras
parent 6761c4a073
commit a7f290dad3
41 changed files with 1541 additions and 430 deletions
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10
include/asm-powerpc/elf.h
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@ -269,14 +269,12 @@ extern int dcache_bsize;
extern int icache_bsize;
extern int ucache_bsize;
#ifdef __powerpc64__
/* vDSO has arch_setup_additional_pages */
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES /* vDSO has arch_setup_additional_pages */
extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack);
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int executable_stack);
#define VDSO_AUX_ENT(a,b) NEW_AUX_ENT(a,b);
#else
#define VDSO_AUX_ENT(a,b)
#endif /* __powerpc64__ */
/*
* The requirements here are: