XCOFFDump.cpp
2.81 KB
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
//===-- XCOFFDump.cpp - XCOFF-specific dumper -----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements the XCOFF-specific dumper for llvm-objdump.
///
//===----------------------------------------------------------------------===//
#include "XCOFFDump.h"
#include "llvm-objdump.h"
#include "llvm/Demangle/Demangle.h"
using namespace llvm;
using namespace llvm::object;
Error objdump::getXCOFFRelocationValueString(const XCOFFObjectFile *Obj,
const RelocationRef &Rel,
SmallVectorImpl<char> &Result) {
symbol_iterator SymI = Rel.getSymbol();
if (SymI == Obj->symbol_end())
return make_error<GenericBinaryError>(
"invalid symbol reference in relocation entry",
object_error::parse_failed);
Expected<StringRef> SymNameOrErr = SymI->getName();
if (!SymNameOrErr)
return SymNameOrErr.takeError();
std::string SymName = (*SymNameOrErr).str();
if (Demangle)
SymName = demangle(SymName);
if (SymbolDescription)
SymName = getXCOFFSymbolDescription(createSymbolInfo(Obj, *SymI), SymName);
Result.append(SymName.begin(), SymName.end());
return Error::success();
}
Optional<XCOFF::StorageMappingClass>
objdump::getXCOFFSymbolCsectSMC(const XCOFFObjectFile *Obj,
const SymbolRef &Sym) {
XCOFFSymbolRef SymRef(Sym.getRawDataRefImpl(), Obj);
if (SymRef.hasCsectAuxEnt())
return SymRef.getXCOFFCsectAuxEnt32()->StorageMappingClass;
return None;
}
bool objdump::isLabel(const XCOFFObjectFile *Obj, const SymbolRef &Sym) {
XCOFFSymbolRef SymRef(Sym.getRawDataRefImpl(), Obj);
if (SymRef.hasCsectAuxEnt())
return SymRef.getXCOFFCsectAuxEnt32()->isLabel();
return false;
}
std::string objdump::getXCOFFSymbolDescription(const SymbolInfoTy &SymbolInfo,
StringRef SymbolName) {
assert(SymbolInfo.isXCOFF() && "Must be a XCOFFSymInfo.");
std::string Result;
// Dummy symbols have no symbol index.
if (SymbolInfo.XCOFFSymInfo.Index)
Result = ("(idx: " + Twine(SymbolInfo.XCOFFSymInfo.Index.getValue()) +
") " + SymbolName)
.str();
else
Result.append(SymbolName.begin(), SymbolName.end());
if (SymbolInfo.XCOFFSymInfo.StorageMappingClass &&
!SymbolInfo.XCOFFSymInfo.IsLabel) {
const XCOFF::StorageMappingClass Smc =
SymbolInfo.XCOFFSymInfo.StorageMappingClass.getValue();
Result.append(("[" + XCOFF::getMappingClassString(Smc) + "]").str());
}
return Result;
}