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
32namespace r600 {
33
34enum JumpType {
35   jt_loop,
36   jt_if
37};
38
39/**
40  Class to link the jump locations
41*/
42class ConditionalJumpTracker
43{
44public:
45   ConditionalJumpTracker();
46   ~ConditionalJumpTracker();
47
48   /* Mark the start of a loop or a if/else */
49   void push(r600_bytecode_cf *start, JumpType type);
50
51   /* Mark the end of a loop or a if/else and fixup the jump sites */
52   bool pop(r600_bytecode_cf *final, JumpType type);
53
54   /* Add middle sites to the call frame i.e. continue,
55    * break inside loops, and else in if-then-else constructs.
56    */
57   bool add_mid(r600_bytecode_cf *source, JumpType type);
58
59private:
60   struct ConditionalJumpTrackerImpl * impl;
61};
62
63}
64
65#endif // SFN_CONDITIONALJUMPTRACKER_H
66