1 /* -*- mesa-c++ -*- 2 * 3 * Copyright (c) 2018-2019 Collabora LTD 4 * 5 * Author: Gert Wollny <gert.wollny@collabora.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * on the rights to use, copy, modify, merge, publish, distribute, sub 11 * license, and/or sell copies of the Software, and to permit persons to whom 12 * the Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the next 15 * paragraph) shall be included in all copies or substantial portions of the 16 * Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 27 #ifndef SFN_CONDITIONALJUMPTRACKER_H 28 #define SFN_CONDITIONALJUMPTRACKER_H 29 30 #include "gallium/drivers/r600/r600_asm.h" 31 32 namespace r600 { 33 34 enum JumpType { 35 jt_loop, 36 jt_if 37 }; 38 39 /** 40 Class to link the jump locations 41 42 */ 43 44 45 class ConditionalJumpTracker 46 { 47 public: 48 ConditionalJumpTracker(); 49 ~ConditionalJumpTracker(); 50 51 /* Mark the start of a loop or a if/else */ 52 53 void push(r600_bytecode_cf *start, JumpType type); 54 55 /* Mark the end of a loop or a if/else and fixup the jump sites */ 56 bool pop(r600_bytecode_cf *final, JumpType type); 57 58 /* Add middle sites to the call frame i.e. continue, 59 * break inside loops, and else in if-then-else constructs. 60 */ 61 bool add_mid(r600_bytecode_cf *source, JumpType type); 62 63 private: 64 struct ConditionalJumpTrackerImpl * impl; 65 }; 66 67 } 68 69 #endif // SFN_CONDITIONALJUMPTRACKER_H 70