core-cpu.h

/*
 * Copyright (C)      2022 Colin Ian King.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#ifndef CORE_CPU_H
#define CORE_CPU_H

/* Always included after stress-ng.h is included */

/*
 *  stress_x86_cpuid()
 *	cpuid for x86
 */
static inline void stress_x86_cpuid(
	uint32_t *eax,
	uint32_t *ebx,
	uint32_t *ecx,
	uint32_t *edx)
{
#if defined(STRESS_ARCH_X86)
        __asm__ __volatile__("cpuid"
            : "=a" (*eax),
              "=b" (*ebx),
              "=c" (*ecx),
              "=d" (*edx)
            : "0" (*eax), "2" (*ecx)
            : "memory");
#else
	*eax = 0;
	*ebx = 0;
	*ecx = 0;
	*edx = 0;
#endif
}

extern WARN_UNUSED bool stress_cpu_is_x86(void);
extern WARN_UNUSED bool stress_cpu_x86_has_clflushopt(void);
extern WARN_UNUSED bool stress_cpu_x86_has_clwb(void);
extern WARN_UNUSED bool stress_cpu_x86_has_cldemote(void);
extern WARN_UNUSED bool stress_cpu_x86_has_waitpkg(void);
extern WARN_UNUSED bool stress_cpu_x86_has_rdseed(void);
extern WARN_UNUSED bool stress_cpu_x86_has_syscall(void);
extern WARN_UNUSED bool stress_cpu_x86_has_rdrand(void);
extern WARN_UNUSED bool stress_cpu_x86_has_tsc(void);
extern WARN_UNUSED bool stress_cpu_x86_has_msr(void);
extern WARN_UNUSED bool stress_cpu_x86_has_clfsh(void);
extern WARN_UNUSED bool stress_cpu_x86_has_mmx(void);
extern WARN_UNUSED bool stress_cpu_x86_has_sse(void);
extern WARN_UNUSED bool stress_cpu_x86_has_sse2(void);

#endif