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[llvm-symbolizer] Add support for specifying addresses on command-line 

See https://bugs.llvm.org/show_bug.cgi?id=40070.

GNU addr2line accepts input addresses both on the command-line and via
stdin. llvm-symbolizer previously only supported the latter. This
change adds support for the former. As with addr2line, the new
behaviour is to only look for addresses on stdin if no positional
arguments were provided to llvm-symbolizer.

Reviewed by: ruiu

Differential Revision: https://reviews.llvm.org/D56272

llvm-svn: 350821
This commit is contained in:
James Henderson 2019-01-10 14:10:02 +00:00
parent 97ed076dd1
commit 3a6a5a3370
2 changed files with 63 additions and 36 deletions
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19
llvm/test/tools/llvm-symbolizer/basic.s Normal file
View File

@ -0,0 +1,19 @@
# REQUIRES: x86-registered-target
foo:
.space 10
nop
nop
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o -g
# Check input addresses specified on stdin.
# RUN: echo -e "0xa\n0xb" | llvm-symbolizer --obj=%t.o | FileCheck %s
# RUN: echo -e "10\n11" | llvm-symbolizer --obj=%t.o | FileCheck %s
# Check input addresses specified on the command-line.
# RUN: llvm-symbolizer 0xa 0xb --obj=%t.o | FileCheck %s
# RUN: llvm-symbolizer 10 11 --obj=%t.o | FileCheck %s
# CHECK: basic.s:5:0
# CHECK: basic.s:6:0

80
llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
View File

@ -90,6 +90,10 @@ static cl::opt<int> ClPrintSourceContextLines(
static cl::opt<bool> ClVerbose("verbose", cl::init(false),
cl::desc("Print verbose line info"));
static cl::list<std::string> ClInputAddresses(cl::Positional,
cl::desc("<input addresses>..."),
cl::ZeroOrMore);
template<typename T>
static bool error(Expected<T> &ResOrErr) {
if (ResOrErr)
@ -137,6 +141,38 @@ static bool parseCommand(StringRef InputString, bool &IsData,
return !StringRef(pos, offset_length).getAsInteger(0, ModuleOffset);
}
static void symbolizeInput(StringRef InputString, LLVMSymbolizer &Symbolizer,
DIPrinter &Printer) {
bool IsData = false;
std::string ModuleName;
uint64_t ModuleOffset = 0;
if (!parseCommand(StringRef(InputString), IsData, ModuleName, ModuleOffset)) {
outs() << InputString;
return;
}
if (ClPrintAddress) {
outs() << "0x";
outs().write_hex(ModuleOffset);
StringRef Delimiter = ClPrettyPrint ? ": " : "\n";
outs() << Delimiter;
}
if (IsData) {
auto ResOrErr = Symbolizer.symbolizeData(ModuleName, ModuleOffset);
Printer << (error(ResOrErr) ? DIGlobal() : ResOrErr.get());
} else if (ClPrintInlining) {
auto ResOrErr =
Symbolizer.symbolizeInlinedCode(ModuleName, ModuleOffset, ClDwpName);
Printer << (error(ResOrErr) ? DIInliningInfo() : ResOrErr.get());
} else {
auto ResOrErr =
Symbolizer.symbolizeCode(ModuleName, ModuleOffset, ClDwpName);
Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get());
}
outs() << "\n";
outs().flush();
}
int main(int argc, char **argv) {
InitLLVM X(argc, argv);
@ -159,43 +195,15 @@ int main(int argc, char **argv) {
DIPrinter Printer(outs(), ClPrintFunctions != FunctionNameKind::None,
ClPrettyPrint, ClPrintSourceContextLines, ClVerbose);
const int kMaxInputStringLength = 1024;
char InputString[kMaxInputStringLength];
if (ClInputAddresses.empty()) {
const int kMaxInputStringLength = 1024;
char InputString[kMaxInputStringLength];
while (true) {
if (!fgets(InputString, sizeof(InputString), stdin))
break;
bool IsData = false;
std::string ModuleName;
uint64_t ModuleOffset = 0;
if (!parseCommand(StringRef(InputString), IsData, ModuleName,
ModuleOffset)) {
outs() << InputString;
continue;
}
if (ClPrintAddress) {
outs() << "0x";
outs().write_hex(ModuleOffset);
StringRef Delimiter = ClPrettyPrint ? ": " : "\n";
outs() << Delimiter;
}
if (IsData) {
auto ResOrErr = Symbolizer.symbolizeData(ModuleName, ModuleOffset);
Printer << (error(ResOrErr) ? DIGlobal() : ResOrErr.get());
} else if (ClPrintInlining) {
auto ResOrErr =
Symbolizer.symbolizeInlinedCode(ModuleName, ModuleOffset, ClDwpName);
Printer << (error(ResOrErr) ? DIInliningInfo()
: ResOrErr.get());
} else {
auto ResOrErr =
Symbolizer.symbolizeCode(ModuleName, ModuleOffset, ClDwpName);
Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get());
}
outs() << "\n";
outs().flush();
while (fgets(InputString, sizeof(InputString), stdin))
symbolizeInput(InputString, Symbolizer, Printer);
} else {
for (StringRef Address : ClInputAddresses)
symbolizeInput(Address, Symbolizer, Printer);
}
return 0;