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PowerPC: Rename __kernel_vdso_get_tbfreq to __kernel_get_tbfreq.

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In order for the __kernel_get_tbfreq vDSO call to work the
INTERNAL_VSYSCALL_NCS macro needed to be updated to prevent it from
assuming an integer return type (since the timebase frequency is a 64-bit
value) by specifying the type of the return type as a macro parameter.  The
macro then specifically declares the return value as a 'register' (or
implied pair) of the denoted type.  The compiler is then informed that this
register (or implied pair) is to be used for the return value.
This commit is contained in:
Anton Blanchard
2013-01-15 12:50:46 -06:00
committed by Ryan S. Arnold
parent f7bff1ed96
commit 471a1672d4
5 changed files with 55 additions and 29 deletions
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3
sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c
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@@ -41,7 +41,8 @@ __get_clockfreq (void)
/* If we can use the vDSO to obtain the timebase even better. */
#ifdef SHARED
INTERNAL_SYSCALL_DECL (err);
timebase_freq = INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK (get_tbfreq, err, 0);
timebase_freq =
INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK (get_tbfreq, err, hp_timing_t, 0);
if (INTERNAL_SYSCALL_ERROR_P (timebase_freq, err)
&& INTERNAL_SYSCALL_ERRNO (timebase_freq, err) == ENOSYS)
#endif