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Compute correct symbol sizes for MachO and COFF.

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Before this would dump from the symbol start to the end of the section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240367 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-06-23 02:20:37 +00:00
parent 344dd6519e
commit dba070638a
2 changed files with 53 additions and 2 deletions
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44
test/tools/llvm-cxxdump/sym-size.s Normal file
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@ -0,0 +1,44 @@
// RUN: llvm-mc %s -o %t -filetype=obj -triple=x86_64-pc-win32
// RUN: llvm-cxxdump %t | FileCheck %s
// CHECK: ??_8B@@7B@[0]: 8
// CHECK-NEXT: ??_8B@@7B@[4]: 9
// CHECK-NEXT: ??_8C@@7B@[0]: 10
// CHECK-NEXT: ??_8C@@7B@[4]: 11
// CHECK-NEXT: ??_8D@@7B0@@[0]: 0
// CHECK-NEXT: ??_8D@@7B0@@[4]: 1
// CHECK-NEXT: ??_8D@@7B0@@[8]: 2
// CHECK-NEXT: ??_8D@@7B0@@[12]: 3
// CHECK-NEXT: ??_8D@@7BB@@@[0]: 4
// CHECK-NEXT: ??_8D@@7BB@@@[4]: 5
// CHECK-NEXT: ??_8D@@7BC@@@[0]: 6
// CHECK-NEXT: ??_8D@@7BC@@@[4]: 7
.section .rdata,"dr"
.globl "??_8D@@7B0@@"
"??_8D@@7B0@@":
.long 0
.long 1
.long 2
.long 3
.globl "??_8D@@7BB@@@"
"??_8D@@7BB@@@":
.long 4
.long 5
.globl "??_8D@@7BC@@@"
"??_8D@@7BC@@@":
.long 6
.long 7
.globl "??_8B@@7B@"
"??_8B@@7B@":
.long 8
.long 9
.globl "??_8C@@7B@"
"??_8C@@7B@":
.long 10
.long 11

11
tools/llvm-cxxdump/llvm-cxxdump.cpp
View File

@ -16,6 +16,7 @@
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Object/SymbolSize.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/FileSystem.h"
@ -187,7 +188,14 @@ static void dumpCXXData(const ObjectFile *Obj) {
uint8_t BytesInAddress = Obj->getBytesInAddress();
for (const object::SymbolRef &Sym : Obj->symbols()) {
ErrorOr<std::vector<std::pair<SymbolRef, uint64_t>>> SymAddrOrErr =
object::computeSymbolSizes(*Obj);
if (error(SymAddrOrErr.getError()))
return;
for (auto &P : *SymAddrOrErr) {
object::SymbolRef Sym = P.first;
uint64_t SymSize = P.second;
StringRef SymName;
if (error(Sym.getName(SymName)))
return;
@ -207,7 +215,6 @@ static void dumpCXXData(const ObjectFile *Obj) {
uint64_t SymAddress;
if (error(Sym.getAddress(SymAddress)))
return;
uint64_t SymSize = Sym.getSize();
uint64_t SecAddress = Sec.getAddress();
uint64_t SecSize = Sec.getSize();
uint64_t SymOffset = SymAddress - SecAddress;