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Use linker script commands in writeMapFile.

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This converts the last (chronologically) user of OutputSections to use
the linker script commands instead.

The idea is to convert all uses after fabricateDefaultCommands, so
that we have a single representation.

llvm-svn: 303384
This commit is contained in:
Rafael Espindola 2017-05-18 21:30:14 +00:00
parent 795de8a7bd
commit a46f688e8f
4 changed files with 19 additions and 13 deletions
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3
lld/ELF/LinkerScript.cpp
View File

@ -440,9 +440,6 @@ void LinkerScript::fabricateDefaultCommands() {
// For each OutputSection that needs a VA fabricate an OutputSectionCommand
// with an InputSectionDescription describing the InputSections
for (OutputSection *Sec : *OutputSections) {
if (!(Sec->Flags & SHF_ALLOC))
continue;
auto *OSCmd = make<OutputSectionCommand>(Sec->Name);
OSCmd->Sec = Sec;
SecToCommand[Sec] = OSCmd;

17
lld/ELF/MapFile.cpp
View File

@ -21,6 +21,7 @@
#include "MapFile.h"
#include "InputFiles.h"
#include "LinkerScript.h"
#include "OutputSections.h"
#include "Strings.h"
#include "SymbolTable.h"
@ -99,7 +100,7 @@ getSymbolStrings(ArrayRef<DefinedRegular *> Syms) {
}
template <class ELFT>
void elf::writeMapFile(ArrayRef<OutputSection *> OutputSections) {
void elf::writeMapFile(llvm::ArrayRef<BaseCommand *> Script) {
if (Config->MapFile.empty())
return;
@ -122,7 +123,11 @@ void elf::writeMapFile(ArrayRef<OutputSection *> OutputSections) {
<< " Align Out In Symbol\n";
// Print out file contents.
for (OutputSection *OSec : OutputSections) {
for (BaseCommand *Base : Script) {
auto *Cmd = dyn_cast<OutputSectionCommand>(Base);
if (!Cmd)
continue;
OutputSection *OSec = Cmd->Sec;
writeHeader<ELFT>(OS, OSec->Addr, OSec->Size, OSec->Alignment);
OS << OSec->Name << '\n';
@ -137,7 +142,7 @@ void elf::writeMapFile(ArrayRef<OutputSection *> OutputSections) {
}
}
template void elf::writeMapFile<ELF32LE>(ArrayRef<OutputSection *>);
template void elf::writeMapFile<ELF32BE>(ArrayRef<OutputSection *>);
template void elf::writeMapFile<ELF64LE>(ArrayRef<OutputSection *>);
template void elf::writeMapFile<ELF64BE>(ArrayRef<OutputSection *>);
template void elf::writeMapFile<ELF32LE>(ArrayRef<BaseCommand *>);
template void elf::writeMapFile<ELF32BE>(ArrayRef<BaseCommand *>);
template void elf::writeMapFile<ELF64LE>(ArrayRef<BaseCommand *>);
template void elf::writeMapFile<ELF64BE>(ArrayRef<BaseCommand *>);

5
lld/ELF/MapFile.h
View File

@ -14,9 +14,8 @@
namespace lld {
namespace elf {
class OutputSection;
template <class ELFT>
void writeMapFile(llvm::ArrayRef<OutputSection *> OutputSections);
struct BaseCommand;
template <class ELFT> void writeMapFile(llvm::ArrayRef<BaseCommand *> Script);
}
}

7
lld/ELF/Writer.cpp
View File

@ -288,8 +288,13 @@ template <class ELFT> void Writer<ELFT>::run() {
if (ErrorCount)
return;
// Clear the OutputSections to make sure it is not used anymore. Any
// code from this point on should be using the linker script
// commands.
OutputSections.clear();
// Handle -Map option.
writeMapFile<ELFT>(OutputSections);
writeMapFile<ELFT>(Script->Opt.Commands);
if (ErrorCount)
return;