Added first bit of support for the dwarf .file directive. This patch collects
the info from the .file directive and makes file and directory tables that
will eventually be put out as part of the dwarf info in the output file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 61d65b8..e74952a 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -26,6 +26,7 @@
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCDwarf.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
@@ -370,6 +371,16 @@
if (TheCondState.TheCond != StartingCondState.TheCond ||
TheCondState.Ignore != StartingCondState.Ignore)
return TokError("unmatched .ifs or .elses");
+
+ // Check to see there are no empty DwarfFile slots.
+ const std::vector<MCDwarfFile *> &MCDwarfFiles =
+ getContext().getMCDwarfFiles();
+ for (unsigned i = 1; i < MCDwarfFiles.size(); i++) {
+ if (!MCDwarfFiles[i]){
+ TokError("unassigned file number: " + Twine(i) + " for .file directives");
+ HadError = true;
+ }
+ }
// Finalize the output stream if there are no errors and if the client wants
// us to.
@@ -1729,6 +1740,7 @@
bool GenericAsmParser::ParseDirectiveFile(StringRef, SMLoc DirectiveLoc) {
// FIXME: I'm not sure what this is.
int64_t FileNumber = -1;
+ SMLoc FileNumberLoc = getLexer().getLoc();
if (getLexer().is(AsmToken::Integer)) {
FileNumber = getTok().getIntVal();
Lex();
@@ -1749,8 +1761,11 @@
if (FileNumber == -1)
getStreamer().EmitFileDirective(Filename);
- else
+ else {
+ if (getContext().GetDwarfFile(Filename, FileNumber) == 0)
+ Error(FileNumberLoc, "file number already allocated");
getStreamer().EmitDwarfFileDirective(FileNumber, Filename);
+ }
return false;
}