tcg-mo.h (2028B)
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 */