1 //===- AMDKernelCodeTUtils.cpp --------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 /// \file - utility functions to parse/print amd_kernel_code_t structure
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "AMDKernelCodeTUtils.h"
14 #include "SIDefines.h"
15 #include "llvm/ADT/ArrayRef.h"
16 #include "llvm/ADT/StringMap.h"
17 #include "llvm/ADT/StringRef.h"
18 #include "llvm/MC/MCParser/MCAsmLexer.h"
19 #include "llvm/MC/MCParser/MCAsmParser.h"
20 #include "llvm/Support/raw_ostream.h"
21 #include <cassert>
22 #include <cstdint>
23 #include <utility>
24
25 using namespace llvm;
26
get_amd_kernel_code_t_FldNames()27 static ArrayRef<StringRef> get_amd_kernel_code_t_FldNames() {
28 static StringRef const Table[] = {
29 "", // not found placeholder
30 #define RECORD(name, altName, print, parse) #name
31 #include "AMDKernelCodeTInfo.h"
32 #undef RECORD
33 };
34 return makeArrayRef(Table);
35 }
36
get_amd_kernel_code_t_FldAltNames()37 static ArrayRef<StringRef> get_amd_kernel_code_t_FldAltNames() {
38 static StringRef const Table[] = {
39 "", // not found placeholder
40 #define RECORD(name, altName, print, parse) #altName
41 #include "AMDKernelCodeTInfo.h"
42 #undef RECORD
43 };
44 return makeArrayRef(Table);
45 }
46
createIndexMap(const ArrayRef<StringRef> & names,const ArrayRef<StringRef> & altNames)47 static StringMap<int> createIndexMap(const ArrayRef<StringRef> &names,
48 const ArrayRef<StringRef> &altNames) {
49 StringMap<int> map;
50 assert(names.size() == altNames.size());
51 for (unsigned i = 0; i < names.size(); ++i) {
52 map.insert(std::make_pair(names[i], i));
53 map.insert(std::make_pair(altNames[i], i));
54 }
55 return map;
56 }
57
get_amd_kernel_code_t_FieldIndex(StringRef name)58 static int get_amd_kernel_code_t_FieldIndex(StringRef name) {
59 static const auto map = createIndexMap(get_amd_kernel_code_t_FldNames(),
60 get_amd_kernel_code_t_FldAltNames());
61 return map.lookup(name) - 1; // returns -1 if not found
62 }
63
get_amd_kernel_code_t_FieldName(int index)64 static StringRef get_amd_kernel_code_t_FieldName(int index) {
65 return get_amd_kernel_code_t_FldNames()[index + 1];
66 }
67
68 // Field printing
69
printName(raw_ostream & OS,StringRef Name)70 static raw_ostream &printName(raw_ostream &OS, StringRef Name) {
71 return OS << Name << " = ";
72 }
73
74 template <typename T, T amd_kernel_code_t::*ptr>
printField(StringRef Name,const amd_kernel_code_t & C,raw_ostream & OS)75 static void printField(StringRef Name, const amd_kernel_code_t &C,
76 raw_ostream &OS) {
77 printName(OS, Name) << (int)(C.*ptr);
78 }
79
80 template <typename T, T amd_kernel_code_t::*ptr, int shift, int width = 1>
printBitField(StringRef Name,const amd_kernel_code_t & c,raw_ostream & OS)81 static void printBitField(StringRef Name, const amd_kernel_code_t &c,
82 raw_ostream &OS) {
83 const auto Mask = (static_cast<T>(1) << width) - 1;
84 printName(OS, Name) << (int)((c.*ptr >> shift) & Mask);
85 }
86
87 using PrintFx = void(*)(StringRef, const amd_kernel_code_t &, raw_ostream &);
88
getPrinterTable()89 static ArrayRef<PrintFx> getPrinterTable() {
90 static const PrintFx Table[] = {
91 #define RECORD(name, altName, print, parse) print
92 #include "AMDKernelCodeTInfo.h"
93 #undef RECORD
94 };
95 return makeArrayRef(Table);
96 }
97
printAmdKernelCodeField(const amd_kernel_code_t & C,int FldIndex,raw_ostream & OS)98 void llvm::printAmdKernelCodeField(const amd_kernel_code_t &C,
99 int FldIndex,
100 raw_ostream &OS) {
101 auto Printer = getPrinterTable()[FldIndex];
102 if (Printer)
103 Printer(get_amd_kernel_code_t_FieldName(FldIndex), C, OS);
104 }
105
dumpAmdKernelCode(const amd_kernel_code_t * C,raw_ostream & OS,const char * tab)106 void llvm::dumpAmdKernelCode(const amd_kernel_code_t *C,
107 raw_ostream &OS,
108 const char *tab) {
109 const int Size = getPrinterTable().size();
110 for (int i = 0; i < Size; ++i) {
111 OS << tab;
112 printAmdKernelCodeField(*C, i, OS);
113 OS << '\n';
114 }
115 }
116
117 // Field parsing
118
expectAbsExpression(MCAsmParser & MCParser,int64_t & Value,raw_ostream & Err)119 static bool expectAbsExpression(MCAsmParser &MCParser, int64_t &Value, raw_ostream& Err) {
120
121 if (MCParser.getLexer().isNot(AsmToken::Equal)) {
122 Err << "expected '='";
123 return false;
124 }
125 MCParser.getLexer().Lex();
126
127 if (MCParser.parseAbsoluteExpression(Value)) {
128 Err << "integer absolute expression expected";
129 return false;
130 }
131 return true;
132 }
133
134 template <typename T, T amd_kernel_code_t::*ptr>
parseField(amd_kernel_code_t & C,MCAsmParser & MCParser,raw_ostream & Err)135 static bool parseField(amd_kernel_code_t &C, MCAsmParser &MCParser,
136 raw_ostream &Err) {
137 int64_t Value = 0;
138 if (!expectAbsExpression(MCParser, Value, Err))
139 return false;
140 C.*ptr = (T)Value;
141 return true;
142 }
143
144 template <typename T, T amd_kernel_code_t::*ptr, int shift, int width = 1>
parseBitField(amd_kernel_code_t & C,MCAsmParser & MCParser,raw_ostream & Err)145 static bool parseBitField(amd_kernel_code_t &C, MCAsmParser &MCParser,
146 raw_ostream &Err) {
147 int64_t Value = 0;
148 if (!expectAbsExpression(MCParser, Value, Err))
149 return false;
150 const uint64_t Mask = ((UINT64_C(1) << width) - 1) << shift;
151 C.*ptr &= (T)~Mask;
152 C.*ptr |= (T)((Value << shift) & Mask);
153 return true;
154 }
155
156 using ParseFx = bool(*)(amd_kernel_code_t &, MCAsmParser &MCParser,
157 raw_ostream &Err);
158
getParserTable()159 static ArrayRef<ParseFx> getParserTable() {
160 static const ParseFx Table[] = {
161 #define RECORD(name, altName, print, parse) parse
162 #include "AMDKernelCodeTInfo.h"
163 #undef RECORD
164 };
165 return makeArrayRef(Table);
166 }
167
parseAmdKernelCodeField(StringRef ID,MCAsmParser & MCParser,amd_kernel_code_t & C,raw_ostream & Err)168 bool llvm::parseAmdKernelCodeField(StringRef ID,
169 MCAsmParser &MCParser,
170 amd_kernel_code_t &C,
171 raw_ostream &Err) {
172 const int Idx = get_amd_kernel_code_t_FieldIndex(ID);
173 if (Idx < 0) {
174 Err << "unexpected amd_kernel_code_t field name " << ID;
175 return false;
176 }
177 auto Parser = getParserTable()[Idx];
178 return Parser ? Parser(C, MCParser, Err) : false;
179 }
180