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
|
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/bit_field.h"
#include "common/common_types.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
// Seems to be in CUDA terminology.
enum class LocalScope : u64 {
CTA,
GL,
SYS,
VC,
};
} // Anonymous namespace
void TranslatorVisitor::MEMBAR(u64 inst) {
union {
u64 raw;
BitField<8, 2, LocalScope> scope;
} const membar{inst};
if (membar.scope == LocalScope::CTA) {
ir.WorkgroupMemoryBarrier();
} else {
ir.DeviceMemoryBarrier();
}
}
void TranslatorVisitor::DEPBAR() {
// DEPBAR is a no-op
}
void TranslatorVisitor::BAR(u64 insn) {
enum class Mode {
RedPopc,
Scan,
RedAnd,
RedOr,
Sync,
Arrive,
};
union {
u64 raw;
BitField<43, 1, u64> is_a_imm;
BitField<44, 1, u64> is_b_imm;
BitField<8, 8, u64> imm_a;
BitField<20, 12, u64> imm_b;
BitField<42, 1, u64> neg_pred;
BitField<39, 3, IR::Pred> pred;
} const bar{insn};
const Mode mode{[insn] {
switch (insn & 0x0000009B00000000ULL) {
case 0x0000000200000000ULL:
return Mode::RedPopc;
case 0x0000000300000000ULL:
return Mode::Scan;
case 0x0000000A00000000ULL:
return Mode::RedAnd;
case 0x0000001200000000ULL:
return Mode::RedOr;
case 0x0000008000000000ULL:
return Mode::Sync;
case 0x0000008100000000ULL:
return Mode::Arrive;
}
throw NotImplementedException("Invalid encoding");
}()};
if (mode != Mode::Sync) {
throw NotImplementedException("BAR mode {}", mode);
}
if (bar.is_a_imm == 0) {
throw NotImplementedException("Non-immediate input A");
}
if (bar.imm_a != 0) {
throw NotImplementedException("Non-zero input A");
}
if (bar.is_b_imm == 0) {
throw NotImplementedException("Non-immediate input B");
}
if (bar.imm_b != 0) {
throw NotImplementedException("Non-zero input B");
}
if (bar.pred != IR::Pred::PT && bar.neg_pred != 0) {
throw NotImplementedException("Non-true input predicate");
}
ir.Barrier();
}
} // namespace Shader::Maxwell
|
