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https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision ef7d960403ecd87276e12b69c26bf0fdd5f21a0e authored by Rafael J. Wysocki on 28 August 2020, 18:58:16 UTC, committed by Rafael J. Wysocki on 28 August 2020, 18:58:16 UTC 
Merge branch 'pm-cpufreq'
 
* pm-cpufreq:
  cpufreq: Use WARN_ON_ONCE() for invalid relation
  cpufreq: No need to verify cpufreq_driver in show_scaling_cur_freq()
  Documentation: fix pm/intel_pstate build warning and wording
  cpufreq: replace cpu_logical_map() with read_cpuid_mpir()
2 parent s e3eb6e8 + 30b8e6b
Raw File
Tip revision: ef7d960403ecd87276e12b69c26bf0fdd5f21a0e authored by Rafael J. Wysocki on 28 August 2020, 18:58:16 UTC
Merge branch 'pm-cpufreq'
Tip revision: ef7d960
ashrdi3.c 
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 */

#include <linux/export.h>

#include <linux/libgcc.h>

long long notrace __ashrdi3(long long u, word_type b)
{
	DWunion uu, w;
	word_type bm;

	if (b == 0)
		return u;

	uu.ll = u;
	bm = 32 - b;

	if (bm <= 0) {
		/* w.s.high = 1..1 or 0..0 */
		w.s.high =
		    uu.s.high >> 31;
		w.s.low = uu.s.high >> -bm;
	} else {
		const unsigned int carries = (unsigned int) uu.s.high << bm;

		w.s.high = uu.s.high >> b;
		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
	}

	return w.ll;
}
EXPORT_SYMBOL(__ashrdi3);
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