tsx.h File Reference

x86 TSX intrinsics, compatible with the GCC API. More...

#include <xtf/compiler.h>
#include <xtf/extable.h>

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Macros
#define	_XBEGIN_STARTED   (~0u)
#define	_XBEGIN_UD   EXINFO_SYM(UD, 0)
#define	_XABORT_EXPLICIT   (1u << 0)
#define	_XABORT_RETRY   (1u << 1)
#define	_XABORT_CONFLICT   (1u << 2)
#define	_XABORT_CAPACITY   (1u << 3)
#define	_XABORT_DEBUG   (1u << 4)
#define	_XABORT_NESTED   (1u << 5)
#define	_XABORT_CODE(x)   (((x) >> 24) & 0xff)
#define	_xabort(code)

Functions
static unsigned int	_xbegin (void)
static unsigned int	_xbegin_safe (void)
static int	_xtest (void)
static void	_xend (void)

Detailed Description

x86 TSX intrinsics, compatible with the GCC API.

To use:

if ( (xstatus = _xbegin()) == _XBEGIN_STARTED )
{
    // Inside hardware transaction
    _xend();
}
else
    // Abort occured

Definition in file tsx.h.

Macro Definition Documentation

_XBEGIN_STARTED

#define _XBEGIN_STARTED   (~0u)

Definition at line 26 of file tsx.h.

_XBEGIN_UD

#define _XBEGIN_UD   EXINFO_SYM(UD, 0)

Definition at line 27 of file tsx.h.

_XABORT_EXPLICIT

#define _XABORT_EXPLICIT   (1u << 0)

Definition at line 28 of file tsx.h.

_XABORT_RETRY

#define _XABORT_RETRY   (1u << 1)

Definition at line 29 of file tsx.h.

_XABORT_CONFLICT

#define _XABORT_CONFLICT   (1u << 2)

Definition at line 30 of file tsx.h.

_XABORT_CAPACITY

#define _XABORT_CAPACITY   (1u << 3)

Definition at line 31 of file tsx.h.

_XABORT_DEBUG

#define _XABORT_DEBUG   (1u << 4)

Definition at line 32 of file tsx.h.

_XABORT_NESTED

#define _XABORT_NESTED   (1u << 5)

Definition at line 33 of file tsx.h.

_XABORT_CODE

#define _XABORT_CODE

(

x

)

(((x) >> 24) & 0xff)

Definition at line 34 of file tsx.h.

_xabort

#define _xabort

(

code

)

Value:

do {                                                        \
        asm volatile (".byte 0xc6, 0xf8, %c0" /* xabort %0 */   \
                      :: "N" (code) : "memory");                \
        unreachable();                                          \
    } while ( 0 )

Definition at line 75 of file tsx.h.

Function Documentation

_xbegin()

static unsigned int _xbegin ( void  )

inlinestatic

Definition at line 36 of file tsx.h.

_xbegin_safe()

static unsigned int _xbegin_safe ( void  )

inlinestatic

Definition at line 47 of file tsx.h.

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_xtest()

static int _xtest ( void  )

inlinestatic

Definition at line 60 of file tsx.h.

_xend()

static void _xend ( void  )

inlinestatic

Definition at line 82 of file tsx.h.

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