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llvm-objdump: Skip empty sections when dumping contents

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Empty sections are just noise when using objdump.
This is similar to what binutils does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221680 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2014-11-11 09:58:25 +00:00
parent dd848e93cc
commit 1dd631fe02
4 changed files with 9 additions and 20 deletions
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4
test/MC/Mips/cpload.s
View File

@ -25,12 +25,12 @@
# OBJ-O32: R_MIPS_LO16 _gp_disp
# OBJ-O32: addu $gp, $gp, $25
# OBJ-N32: .text
# OBJ-N32-NOT: .text
# OBJ-N32-NOT: lui $gp, 0
# OBJ-N32-NOT: addiu $gp, $gp, 0
# OBJ-N32-NOT: addu $gp, $gp, $25
# OBJ-N64: .text
# OBJ-N64-NOT: .text
# OBJ-N64-NOT: lui $gp, 0
# OBJ-N64-NOT: addiu $gp, $gp, 0
# OBJ-N64-NOT: addu $gp, $gp, $25

11
test/MC/Mips/elf-objdump.s
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@ -1,11 +0,0 @@
// 32 bit big endian
// RUN: llvm-mc -filetype=obj -triple mips-unknown-linux %s -o - | llvm-objdump -d -triple mips-unknown-linux - | FileCheck %s
// 32 bit little endian
// RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux %s -o - | llvm-objdump -d -triple mips-unknown-linux - | FileCheck %s
// 64 bit big endian
// RUN: llvm-mc -filetype=obj -arch=mips64 -triple mips64-unknown-linux %s -o - | llvm-objdump -d -triple mips-unknown-linux - | FileCheck %s
// 64 bit little endian
// RUN: llvm-mc -filetype=obj -arch=mips64el -triple mips64el-unknown-linux %s -o - | llvm-objdump -d -triple mips-unknown-linux - | FileCheck %s
// We just want to see if llvm-objdump works at all.
// CHECK: .text

5
test/tools/llvm-objdump/coff-large-bss.test
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@ -1,6 +1,3 @@
RUN: llvm-objdump -s %p/Inputs/large-bss.obj.coff-i386 | FileCheck %s
; CHECK: Contents of section .text:
: CHECK-NEXT: Contents of section .data:
: CHECK-NEXT: Contents of section .bss:
: CHECK-NEXT: <skipping contents of bss section at [0000, 010f)>
: CHECK: <skipping contents of bss section at [0000, 010f)>

9
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -313,6 +313,8 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
uint64_t SectionAddr = Section.getAddress();
uint64_t SectSize = Section.getSize();
if (!SectSize)
continue;
// Make a list of all the symbols in this section.
std::vector<std::pair<uint64_t, StringRef>> Symbols;
@ -514,11 +516,12 @@ static void PrintSectionContents(const ObjectFile *Obj) {
if (error(Section.getName(Name)))
continue;
uint64_t BaseAddr = Section.getAddress();
bool BSS = Section.isBSS();
uint64_t Size = Section.getSize();
if (!Size)
continue;
outs() << "Contents of section " << Name << ":\n";
if (BSS) {
uint64_t Size = Section.getSize();
if (Section.isBSS()) {
outs() << format("<skipping contents of bss section at [%04" PRIx64
", %04" PRIx64 ")>\n",
BaseAddr, BaseAddr + Size);