1 //===-- CSKYAttributeParser.cpp - CSKY Attribute Parser -----------------===//
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 #include "llvm/Support/CSKYAttributeParser.h"
10 #include "llvm/ADT/StringExtras.h"
11 #include "llvm/Support/Errc.h"
12 
13 using namespace llvm;
14 
15 const CSKYAttributeParser::DisplayHandler
16     CSKYAttributeParser::displayRoutines[] = {
17         {
18             CSKYAttrs::CSKY_ARCH_NAME,
19             &ELFAttributeParser::stringAttribute,
20         },
21         {
22             CSKYAttrs::CSKY_CPU_NAME,
23             &ELFAttributeParser::stringAttribute,
24         },
25         {
26             CSKYAttrs::CSKY_ISA_FLAGS,
27             &ELFAttributeParser::integerAttribute,
28         },
29         {
30             CSKYAttrs::CSKY_ISA_EXT_FLAGS,
31             &ELFAttributeParser::integerAttribute,
32         },
33         {
34             CSKYAttrs::CSKY_DSP_VERSION,
35             &CSKYAttributeParser::dspVersion,
36         },
37         {
38             CSKYAttrs::CSKY_VDSP_VERSION,
39             &CSKYAttributeParser::vdspVersion,
40         },
41         {
42             CSKYAttrs::CSKY_FPU_VERSION,
43             &CSKYAttributeParser::fpuVersion,
44         },
45         {
46             CSKYAttrs::CSKY_FPU_ABI,
47             &CSKYAttributeParser::fpuABI,
48         },
49         {
50             CSKYAttrs::CSKY_FPU_ROUNDING,
51             &CSKYAttributeParser::fpuRounding,
52         },
53         {
54             CSKYAttrs::CSKY_FPU_DENORMAL,
55             &CSKYAttributeParser::fpuDenormal,
56         },
57         {
58             CSKYAttrs::CSKY_FPU_EXCEPTION,
59             &CSKYAttributeParser::fpuException,
60         },
61         {
62             CSKYAttrs::CSKY_FPU_NUMBER_MODULE,
63             &ELFAttributeParser::stringAttribute,
64         },
65         {
66             CSKYAttrs::CSKY_FPU_HARDFP,
67             &CSKYAttributeParser::fpuHardFP,
68         }};
69 
70 Error CSKYAttributeParser::handler(uint64_t tag, bool &handled) {
71   handled = false;
72   for (const auto &AH : displayRoutines) {
73     if (uint64_t(AH.attribute) == tag) {
74       if (Error e = (this->*AH.routine)(tag))
75         return e;
76       handled = true;
77       break;
78     }
79   }
80 
81   return Error::success();
82 }
83 
84 Error CSKYAttributeParser::dspVersion(unsigned tag) {
85   static const char *strings[] = {"Error", "DSP Extension", "DSP 2.0"};
86   return parseStringAttribute("Tag_CSKY_DSP_VERSION", tag, ArrayRef(strings));
87 }
88 
89 Error CSKYAttributeParser::vdspVersion(unsigned tag) {
90   static const char *strings[] = {"Error", "VDSP Version 1", "VDSP Version 2"};
91   return parseStringAttribute("Tag_CSKY_VDSP_VERSION", tag, ArrayRef(strings));
92 }
93 
94 Error CSKYAttributeParser::fpuVersion(unsigned tag) {
95   static const char *strings[] = {"Error", "FPU Version 1", "FPU Version 2",
96                                   "FPU Version 3"};
97   return parseStringAttribute("Tag_CSKY_FPU_VERSION", tag, ArrayRef(strings));
98 }
99 
100 Error CSKYAttributeParser::fpuABI(unsigned tag) {
101   static const char *strings[] = {"Error", "Soft", "SoftFP", "Hard"};
102   return parseStringAttribute("Tag_CSKY_FPU_ABI", tag, ArrayRef(strings));
103 }
104 
105 Error CSKYAttributeParser::fpuRounding(unsigned tag) {
106   static const char *strings[] = {"None", "Needed"};
107   return parseStringAttribute("Tag_CSKY_FPU_ROUNDING", tag, ArrayRef(strings));
108 }
109 
110 Error CSKYAttributeParser::fpuDenormal(unsigned tag) {
111   static const char *strings[] = {"None", "Needed"};
112   return parseStringAttribute("Tag_CSKY_FPU_DENORMAL", tag, ArrayRef(strings));
113 }
114 
115 Error CSKYAttributeParser::fpuException(unsigned tag) {
116   static const char *strings[] = {"None", "Needed"};
117   return parseStringAttribute("Tag_CSKY_FPU_EXCEPTION", tag, ArrayRef(strings));
118 }
119 
120 Error CSKYAttributeParser::fpuHardFP(unsigned tag) {
121   uint64_t value = de.getULEB128(cursor);
122   ListSeparator LS(" ");
123 
124   std::string description;
125 
126   if (value & 0x1) {
127     description += LS;
128     description += "Half";
129   }
130   if ((value >> 1) & 0x1) {
131     description += LS;
132     description += "Single";
133   }
134   if ((value >> 2) & 0x1) {
135     description += LS;
136     description += "Double";
137   }
138 
139   if (description.empty()) {
140     printAttribute(tag, value, "");
141     return createStringError(errc::invalid_argument,
142                              "unknown Tag_CSKY_FPU_HARDFP value: " +
143                                  Twine(value));
144   }
145 
146   printAttribute(tag, value, description);
147   return Error::success();
148 }
149