1 //===-- RISCVAttributeParser.cpp - RISCV 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/RISCVAttributeParser.h"
10 #include "llvm/ADT/StringExtras.h"
11 
12 using namespace llvm;
13 
14 const RISCVAttributeParser::DisplayHandler
15     RISCVAttributeParser::displayRoutines[] = {
16         {
17             RISCVAttrs::ARCH,
18             &ELFAttributeParser::stringAttribute,
19         },
20         {
21             RISCVAttrs::PRIV_SPEC,
22             &ELFAttributeParser::integerAttribute,
23         },
24         {
25             RISCVAttrs::PRIV_SPEC_MINOR,
26             &ELFAttributeParser::integerAttribute,
27         },
28         {
29             RISCVAttrs::PRIV_SPEC_REVISION,
30             &ELFAttributeParser::integerAttribute,
31         },
32         {
33             RISCVAttrs::STACK_ALIGN,
34             &RISCVAttributeParser::stackAlign,
35         },
36         {
37             RISCVAttrs::UNALIGNED_ACCESS,
38             &RISCVAttributeParser::unalignedAccess,
39         }};
40 
unalignedAccess(unsigned tag)41 Error RISCVAttributeParser::unalignedAccess(unsigned tag) {
42   static const char *strings[] = {"No unaligned access", "Unaligned access"};
43   return parseStringAttribute("Unaligned_access", tag, makeArrayRef(strings));
44 }
45 
stackAlign(unsigned tag)46 Error RISCVAttributeParser::stackAlign(unsigned tag) {
47   uint64_t value = de.getULEB128(cursor);
48   std::string description =
49       "Stack alignment is " + utostr(value) + std::string("-bytes");
50   printAttribute(tag, value, description);
51   return Error::success();
52 }
53 
handler(uint64_t tag,bool & handled)54 Error RISCVAttributeParser::handler(uint64_t tag, bool &handled) {
55   handled = false;
56   for (unsigned AHI = 0, AHE = array_lengthof(displayRoutines); AHI != AHE;
57        ++AHI) {
58     if (uint64_t(displayRoutines[AHI].attribute) == tag) {
59       if (Error e = (this->*displayRoutines[AHI].routine)(tag))
60         return e;
61       handled = true;
62       break;
63     }
64   }
65 
66   return Error::success();
67 }
68