[qemu.git] / tcg / tcg-mo.h

/*
 * Tiny Code Generator for QEMU
 *
 * Copyright (c) 2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef TCG_MO_H
#define TCG_MO_H

typedef enum {
    /* Used to indicate the type of accesses on which ordering
       is to be ensured.  Modeled after SPARC barriers.

       This is of the form TCG_MO_A_B where A is before B in program order.
    */
    TCG_MO_LD_LD  = 0x01,
    TCG_MO_ST_LD  = 0x02,
    TCG_MO_LD_ST  = 0x04,
    TCG_MO_ST_ST  = 0x08,
    TCG_MO_ALL    = 0x0F,  /* OR of the above */

    /* Used to indicate the kind of ordering which is to be ensured by the
       instruction.  These types are derived from x86/aarch64 instructions.
       It should be noted that these are different from C11 semantics.  */
    TCG_BAR_LDAQ  = 0x10,  /* Following ops will not come forward */
    TCG_BAR_STRL  = 0x20,  /* Previous ops will not be delayed */
    TCG_BAR_SC    = 0x30,  /* No ops cross barrier; OR of the above */
} TCGBar;

#endif /* TCG_MO_H */
Commit	Line	Data
20937143 AB	1	/*
	2	* Tiny Code Generator for QEMU
	3	*
	4	* Copyright (c) 2008 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
	25	#ifndef TCG_MO_H
	26	#define TCG_MO_H
	27
	28	typedef enum {
	29	/* Used to indicate the type of accesses on which ordering
	30	is to be ensured. Modeled after SPARC barriers.
	31
	32	This is of the form TCG_MO_A_B where A is before B in program order.
	33	*/
	34	TCG_MO_LD_LD = 0x01,
	35	TCG_MO_ST_LD = 0x02,
	36	TCG_MO_LD_ST = 0x04,
	37	TCG_MO_ST_ST = 0x08,
	38	TCG_MO_ALL = 0x0F, /* OR of the above */
	39
	40	/* Used to indicate the kind of ordering which is to be ensured by the
	41	instruction. These types are derived from x86/aarch64 instructions.
	42	It should be noted that these are different from C11 semantics. */
	43	TCG_BAR_LDAQ = 0x10, /* Following ops will not come forward */
	44	TCG_BAR_STRL = 0x20, /* Previous ops will not be delayed */
	45	TCG_BAR_SC = 0x30, /* No ops cross barrier; OR of the above */
	46	} TCGBar;
	47
	48	#endif /* TCG_MO_H */