1 /* Copyright (c) 2018-2019 Alyssa Rosenzweig ([email protected])
2 * Copyright (C) 2019-2020 Collabora, Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
21 */
22
23 #ifndef __MIDGARD_OPS
24 #define __MIDGARD_OPS
25
26 #include "helpers.h"
27
28 /* Forward declare */
29
30 extern struct mir_op_props alu_opcode_props[256];
31 extern struct mir_ldst_op_props load_store_opcode_props[256];
32 extern struct mir_tex_op_props tex_opcode_props[16];
33 extern struct mir_tag_props midgard_tag_props[16];
34
35 #define OP_IS_ATOMIC(op) (load_store_opcode_props[op].props & LDST_ATOMIC)
36 #define OP_USES_ATTRIB(op) (load_store_opcode_props[op].props & LDST_ATTRIB)
37 #define OP_IS_STORE(op) (load_store_opcode_props[op].props & LDST_STORE)
38 #define OP_HAS_ADDRESS(op) (load_store_opcode_props[op].props & LDST_ADDRESS)
39
40 /* Is this opcode that of an integer (regardless of signedness)? Instruction
41 * names authoritatively determine types */
42
43 static inline bool
midgard_is_integer_op(int op)44 midgard_is_integer_op(int op)
45 {
46 return (op >= 0x40 && op <= 0x7E) || (op >= 0xA0 && op <= 0xC1);
47 }
48
49 static inline bool
midgard_is_unsigned_op(int op)50 midgard_is_unsigned_op(int op)
51 {
52 assert(midgard_is_integer_op(op));
53
54 switch (op) {
55 case midgard_alu_op_uaddsat:
56 case midgard_alu_op_usubsat:
57 case midgard_alu_op_uwmul:
58 case midgard_alu_op_umin:
59 case midgard_alu_op_umax:
60 case midgard_alu_op_uavg:
61 case midgard_alu_op_uravg:
62 case midgard_alu_op_ushlsat:
63 case midgard_alu_op_uabsdiff:
64 case midgard_alu_op_ult:
65 case midgard_alu_op_ule:
66 case midgard_alu_op_uball_lt:
67 case midgard_alu_op_uball_lte:
68 case midgard_alu_op_ubany_lt:
69 case midgard_alu_op_ubany_lte:
70 case midgard_alu_op_u2f_rte:
71 case midgard_alu_op_u2f_rtz:
72 case midgard_alu_op_u2f_rtn:
73 case midgard_alu_op_u2f_rtp:
74 return true;
75 default:
76 return false;
77 }
78 }
79
80 /* Does this opcode *write* an integer? Same as is_integer_op, unless it's a
81 * conversion between int<->float in which case we do the opposite */
82
83 static inline bool
midgard_is_integer_out_op(int op)84 midgard_is_integer_out_op(int op)
85 {
86 bool is_int = midgard_is_integer_op(op);
87 bool is_conversion = alu_opcode_props[op].props & OP_TYPE_CONVERT;
88
89 return is_int ^ is_conversion;
90 }
91
92 /* Determines effective writemask, taking quirks and expansion into account */
93
94 static inline unsigned
effective_writemask(midgard_alu_op op,unsigned existing_mask)95 effective_writemask(midgard_alu_op op, unsigned existing_mask)
96 {
97 /* Channel count is off-by-one to fit in two-bits (0 channel makes no
98 * sense) */
99
100 unsigned channel_count = GET_CHANNEL_COUNT(alu_opcode_props[op].props);
101
102 /* If there is a fixed channel count, construct the appropriate mask */
103
104 if (channel_count)
105 return (1 << channel_count) - 1;
106
107 return existing_mask;
108 };
109
110 #endif
111