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semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ

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These are part of Semihosting for AArch32 and AArch64 Release 2.0

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-8-keithp@keithp.com>
Message-Id: <20210108224256.2321-19-alex.bennee@linaro.org>
This commit is contained in:
Keith Packard 2021-01-08 22:42:54 +00:00 • committed by Alex Bennée
parent 6b80cb25b4
commit 4d834039c2
3 changed files with 22 additions and 0 deletions
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2
include/qemu/timer.h
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@ -808,6 +808,8 @@ static inline int64_t get_clock_realtime(void)
return tv.tv_sec * 1000000000LL + (tv.tv_usec * 1000);
}
extern int64_t clock_start;
/* Warning: don't insert tracepoints into these functions, they are
also used by simpletrace backend and tracepoints would cause
an infinite recursion! */