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llvm-symbolizer: add --obj flag to specify a single object file that should be symbolized.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197988 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov 2013-12-24 19:33:22 +00:00
parent 7f7c068388
commit 42c9ecb7a4
3 changed files with 48 additions and 18 deletions
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16
docs/CommandGuide/llvm-symbolizer.rst
View File

@ -10,7 +10,9 @@ DESCRIPTION
-----------
:program:`llvm-symbolizer` reads object file names and addresses from standard
input and prints corresponding source code locations to standard output. This
input and prints corresponding source code locations to standard output.
If object file is specified in command line, :program:`llvm-symbolizer` reads
only addresses from standard input. This
program uses debug info sections and symbol table in the object files.
EXAMPLE
@ -45,10 +47,22 @@ EXAMPLE
_main
/tmp/source_x86_64.cc:8
$ cat addr2.txt
0x4004f4
0x401000
$ llvm-symbolizer -obj=a.out < addr2.txt
main
/tmp/a.cc:4
foo(int)
/tmp/a.cc:12
OPTIONS
-------
.. option:: -obj
Path to object file to be symbolized.
.. option:: -functions
Print function names as well as source file/line locations. Defaults to true.

9
test/DebugInfo/llvm-symbolizer.test
View File

@ -57,3 +57,12 @@ RUN: llvm-symbolizer < %t.input3 | FileCheck %s --check-prefix=UNKNOWN-ARCH
UNKNOWN-ARCH-NOT: main
UNKNOWN-ARCH: ??
UNKNOWN-ARCH-NOT: main
RUN: echo "0x400559" > %t.input4
RUN: echo "0x400436" >> %t.input4
RUN: llvm-symbolizer --obj %p/Inputs/dwarfdump-test.elf-x86-64 < %t.input4 \
RUN: | FileCheck %s --check-prefix=BINARY
BINARY: main
BINARY-NEXT: /tmp/dbginfo{{[/\\]}}dwarfdump-test.cc:16
BINARY: _start

41
tools/llvm-symbolizer/llvm-symbolizer.cpp
View File

@ -51,6 +51,11 @@ static cl::opt<std::string> ClDefaultArch("default-arch", cl::init(""),
cl::desc("Default architecture "
"(for multi-arch objects)"));
static cl::opt<std::string>
ClBinaryName("obj", cl::init(""),
cl::desc("Path to object file to be symbolized (if not provided, "
"object file should be specified for each input line)"));
static bool parseCommand(bool &IsData, std::string &ModuleName,
uint64_t &ModuleOffset) {
const char *kDataCmd = "DATA ";
@ -62,7 +67,6 @@ static bool parseCommand(bool &IsData, std::string &ModuleName,
return false;
IsData = false;
ModuleName = "";
std::string ModuleOffsetStr = "";
char *pos = InputString;
if (strncmp(pos, kDataCmd, strlen(kDataCmd)) == 0) {
IsData = true;
@ -74,26 +78,29 @@ static bool parseCommand(bool &IsData, std::string &ModuleName,
// If no cmd, assume it's CODE.
IsData = false;
}
// Skip delimiters and parse input filename.
pos += strspn(pos, kDelimiters);
if (*pos == '"' || *pos == '\'') {
char quote = *pos;
pos++;
char *end = strchr(pos, quote);
if (end == 0)
return false;
ModuleName = std::string(pos, end - pos);
pos = end + 1;
// Skip delimiters and parse input filename (if needed).
if (ClBinaryName == "") {
pos += strspn(pos, kDelimiters);
if (*pos == '"' || *pos == '\'') {
char quote = *pos;
pos++;
char *end = strchr(pos, quote);
if (end == 0)
return false;
ModuleName = std::string(pos, end - pos);
pos = end + 1;
} else {
int name_length = strcspn(pos, kDelimiters);
ModuleName = std::string(pos, name_length);
pos += name_length;
}
} else {
int name_length = strcspn(pos, kDelimiters);
ModuleName = std::string(pos, name_length);
pos += name_length;
ModuleName = ClBinaryName;
}
// Skip delimiters and parse module offset.
pos += strspn(pos, kDelimiters);
int offset_length = strcspn(pos, kDelimiters);
ModuleOffsetStr = std::string(pos, offset_length);
if (StringRef(ModuleOffsetStr).getAsInteger(0, ModuleOffset))
if (StringRef(pos, offset_length).getAsInteger(0, ModuleOffset))
return false;
return true;
}
@ -104,7 +111,7 @@ int main(int argc, char **argv) {
PrettyStackTraceProgram X(argc, argv);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm symbolizer for compiler-rt\n");
cl::ParseCommandLineOptions(argc, argv, "llvm-symbolizer\n");
LLVMSymbolizer::Options Opts(ClUseSymbolTable, ClPrintFunctions,
ClPrintInlining, ClDemangle, ClDefaultArch);
LLVMSymbolizer Symbolizer(Opts);