cne_isa.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2019-2022 Intel Corporation
 */
 
#include <sys/syscall.h>
#include <stdint.h>        // for uint64_t
 
#ifndef _CNE_ISA_H_
#define _CNE_ISA_H_
 
#include <cne_common.h>        // for CNDP_API
 
#ifdef __cplusplus
extern "C" {
#endif
 
static __cne_always_inline void
cne_umonitor(volatile void *addr)
{
    /* UMONITOR */
    asm volatile(".byte 0xf3, 0x0f, 0xae, 0xf7;" : : "D"(addr));
}
 
static __cne_always_inline void
cne_umwait(const uint64_t timestamp)
{
    const uint32_t l = (uint32_t)timestamp;
    const uint32_t h = (uint32_t)(timestamp >> 32);
 
    /* UMWAIT */
    asm volatile(".byte 0xf2, 0x0f, 0xae, 0xf7;"
                 :         /* ignore rflags */
                 : "D"(0), /* enter C0.2 */
                   "a"(l), "d"(h));
}
 
static __cne_always_inline void
cne_tpause(const uint64_t timestamp)
{
    const uint32_t l = (uint32_t)timestamp;
    const uint32_t h = (uint32_t)(timestamp >> 32);
 
    /* TPAUSE */
    asm volatile(".byte 0x66, 0x0f, 0xae, 0xf7;"
                 :         /* ignore rflags */
                 : "D"(0), /* enter C0.2 */
                   "a"(l), "d"(h));
}
 
static __cne_always_inline void
cne_movdiri(volatile void *addr, uint32_t value)
{
    /* MOVDIRI */
    asm volatile(".byte 0x40, 0x0f, 0x38, 0xf9, 0x02" : : "a"(value), "d"(addr));
}
 
static __cne_always_inline void
cne_movdir64b(volatile void *dst, const void *src)
{
    /* MOVDIR64B */
    asm volatile(".byte 0x66, 0x0f, 0x38, 0xf8, 0x02" : : "a"(dst), "d"(src) : "memory");
}
 
static __cne_always_inline void
cne_cldemote(const volatile void *p)
{
    /* CLDEMOTE */
    asm volatile(".byte 0x0f, 0x1c, 0x06" ::"S"(p));
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* _CNE_ISA_H_ */