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rtm.h
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rtm.h
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#ifndef _RTM_H
#define _RTM_H 1
/*
* Copyright (c) 2012,2013 Intel Corporation
* Author: Andi Kleen
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* Official RTM intrinsics interface matching gcc/icc, but works
on older gcc compatible compilers and binutils. */
#define _XBEGIN_STARTED (~0u)
#define _XABORT_EXPLICIT (1 << 0)
#define _XABORT_RETRY (1 << 1)
#define _XABORT_CONFLICT (1 << 2)
#define _XABORT_CAPACITY (1 << 3)
#define _XABORT_DEBUG (1 << 4)
#define _XABORT_NESTED (1 << 5)
#define _XABORT_CODE(x) (((x) >> 24) & 0xff)
#define __rtm_force_inline __attribute__((__always_inline__)) inline
static __rtm_force_inline int _xbegin(void)
{
int ret = _XBEGIN_STARTED;
asm volatile(".byte 0xc7,0xf8 ; .long 0" : "+a" (ret) :: "memory");
return ret;
}
static __rtm_force_inline void _xend(void)
{
asm volatile(".byte 0x0f,0x01,0xd5" ::: "memory");
}
static __rtm_force_inline void _xabort(const unsigned int status)
{
asm volatile(".byte 0xc6,0xf8,%P0" :: "i" (status) : "memory");
}
static __rtm_force_inline int _xtest(void)
{
unsigned char out;
asm volatile(".byte 0x0f,0x01,0xd6 ; setnz %0" : "=r" (out) :: "memory");
return out;
}
#endif