1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (c) 2012-2015 Etnaviv Project
*
* 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, sub license,
* 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 (including the
* next paragraph) 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 NON-INFRINGEMENT. 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.
*
* Authors:
* Wladimir J. van der Laan <laanwj@gmail.com>
*/
#ifndef H_ETNAVIV_ASM
#define H_ETNAVIV_ASM
#include <stdint.h>
#include "hw/isa.xml.h"
/* Size of an instruction in 32-bit words */
#define ETNA_INST_SIZE (4)
/* Number of source operands per instruction */
#define ETNA_NUM_SRC (3)
/* Broadcast swizzle to all four components */
#define INST_SWIZ_BROADCAST(x) \
(INST_SWIZ_X(x) | INST_SWIZ_Y(x) | INST_SWIZ_Z(x) | INST_SWIZ_W(x))
/* Identity (NOP) swizzle */
#define INST_SWIZ_IDENTITY \
(INST_SWIZ_X(0) | INST_SWIZ_Y(1) | INST_SWIZ_Z(2) | INST_SWIZ_W(3))
/* Fully specified swizzle */
#define INST_SWIZ(x,y,z,w) \
(INST_SWIZ_X(x) | INST_SWIZ_Y(y) | INST_SWIZ_Z(z) | INST_SWIZ_W(w))
#define SWIZZLE(c0,c1,c2,c3) \
INST_SWIZ(INST_SWIZ_COMP_##c0, \
INST_SWIZ_COMP_##c1, \
INST_SWIZ_COMP_##c2, \
INST_SWIZ_COMP_##c3)
/*** operands ***/
/* destination operand */
struct etna_inst_dst {
unsigned use:1; /* 0: not in use, 1: in use */
unsigned amode:3; /* INST_AMODE_* */
unsigned reg:7; /* register number 0..127 */
unsigned comps:4; /* INST_COMPS_* */
};
/* texture operand */
struct etna_inst_tex {
unsigned id:5; /* sampler id */
unsigned amode:3; /* INST_AMODE_* */
unsigned swiz:8; /* INST_SWIZ */
};
/* source operand */
struct etna_inst_src {
unsigned use:1; /* 0: not in use, 1: in use */
unsigned reg:9; /* register or uniform number 0..511 */
unsigned swiz:8; /* INST_SWIZ */
unsigned neg:1; /* negate (flip sign) if set */
unsigned abs:1; /* absolute (remove sign) if set */
unsigned amode:3; /* INST_AMODE_* */
unsigned rgroup:3; /* INST_RGROUP_* */
};
/*** instruction ***/
struct etna_inst {
uint8_t opcode; /* INST_OPCODE_* */
uint8_t type; /* INST_TYPE_* */
unsigned cond:5; /* INST_CONDITION_* */
unsigned sat:1; /* saturate result between 0..1 */
struct etna_inst_dst dst; /* destination operand */
struct etna_inst_tex tex; /* texture operand */
struct etna_inst_src src[ETNA_NUM_SRC]; /* source operand */
unsigned imm; /* takes place of src[2] for BRANCH/CALL */
};
/* Compose two swizzles (computes swz1.swz2) */
static inline uint32_t inst_swiz_compose(uint32_t swz1, uint32_t swz2)
{
return INST_SWIZ_X((swz1 >> (((swz2 >> 0)&3)*2))&3) |
INST_SWIZ_Y((swz1 >> (((swz2 >> 2)&3)*2))&3) |
INST_SWIZ_Z((swz1 >> (((swz2 >> 4)&3)*2))&3) |
INST_SWIZ_W((swz1 >> (((swz2 >> 6)&3)*2))&3);
};
/* Return whether the rgroup is one of the uniforms */
static inline int
etna_rgroup_is_uniform(unsigned rgroup)
{
return rgroup == INST_RGROUP_UNIFORM_0 ||
rgroup == INST_RGROUP_UNIFORM_1;
}
/**
* Build vivante instruction from structure with
* opcode, cond, sat, dst_use, dst_amode,
* dst_reg, dst_comps, tex_id, tex_amode, tex_swiz,
* src[0-2]_reg, use, swiz, neg, abs, amode, rgroup,
* imm
*
* Return 0 if successful, and a non-zero
* value otherwise.
*/
int
etna_assemble(uint32_t *out, const struct etna_inst *inst);
/**
* Set field imm of already-assembled instruction.
* This is used for filling in jump destinations in a separate pass.
*/
static inline void
etna_assemble_set_imm(uint32_t *out, uint32_t imm)
{
out[3] |= VIV_ISA_WORD_3_SRC2_IMM(imm);
}
#endif
|
