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Adjust llvm-ar and llvm-ranlib to not depend on exception handling.

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Always use an exit code of 1, but print the help message if useful.
Remove the exception handling tag in llvm-as, llvm-dis and
llvm-bcanalyzer, where it isn't used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166767 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joerg Sonnenberger 2012-10-26 10:49:15 +00:00
parent 0bd10f2af3
commit 975bc072ae
9 changed files with 135 additions and 140 deletions
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1
tools/llvm-ar/CMakeLists.txt
View File

@ -1,5 +1,4 @@
set(LLVM_LINK_COMPONENTS archive)
set(LLVM_REQUIRES_EH 1)
add_llvm_tool(llvm-ar
llvm-ar.cpp

1
tools/llvm-ar/Makefile
View File

@ -10,7 +10,6 @@
LEVEL := ../..
TOOLNAME := llvm-ar
LINK_COMPONENTS := archive
REQUIRES_EH := 1
# This tool has no plugins, optimize startup time.
TOOL_NO_EXPORTS := 1

201
tools/llvm-ar/llvm-ar.cpp
View File

@ -23,6 +23,7 @@
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Signals.h"
#include <algorithm>
#include <cstdlib>
#include <memory>
#include <fstream>
using namespace llvm;
@ -126,40 +127,57 @@ std::set<sys::Path> Paths;
// The Archive object to which all the editing operations will be sent.
Archive* TheArchive = 0;
// The name this program was invoked as.
static const char *program_name;
// show_help - Show the error message, the help message and exit.
LLVM_ATTRIBUTE_NORETURN static void
show_help(const std::string &msg) {
errs() << program_name << ": " << msg << "\n\n";
cl::PrintHelpMessage();
if (TheArchive)
delete TheArchive;
std::exit(1);
}
// fail - Show the error message and exit.
LLVM_ATTRIBUTE_NORETURN static void
fail(const std::string &msg) {
errs() << program_name << ": " << msg << "\n\n";
if (TheArchive)
delete TheArchive;
std::exit(1);
}
// getRelPos - Extract the member filename from the command line for
// the [relpos] argument associated with a, b, and i modifiers
void getRelPos() {
if(RestOfArgs.size() > 0) {
RelPos = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
else
throw "Expected [relpos] for a, b, or i modifier";
if(RestOfArgs.size() == 0)
show_help("Expected [relpos] for a, b, or i modifier");
RelPos = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
// getCount - Extract the [count] argument associated with the N modifier
// from the command line and check its value.
void getCount() {
if(RestOfArgs.size() > 0) {
Count = atoi(RestOfArgs[0].c_str());
RestOfArgs.erase(RestOfArgs.begin());
}
else
throw "Expected [count] value with N modifier";
if(RestOfArgs.size() == 0)
show_help("Expected [count] value with N modifier");
Count = atoi(RestOfArgs[0].c_str());
RestOfArgs.erase(RestOfArgs.begin());
// Non-positive counts are not allowed
if (Count < 1)
throw "Invalid [count] value (not a positive integer)";
show_help("Invalid [count] value (not a positive integer)");
}
// getArchive - Get the archive file name from the command line
void getArchive() {
if(RestOfArgs.size() > 0) {
ArchiveName = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
else
throw "An archive name must be specified.";
if(RestOfArgs.size() == 0)
show_help("An archive name must be specified");
ArchiveName = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
// getMembers - Copy over remaining items in RestOfArgs to our Members vector
@ -240,25 +258,27 @@ ArchiveOperation parseCommandLine() {
// Perform various checks on the operation/modifier specification
// to make sure we are dealing with a legal request.
if (NumOperations == 0)
throw "You must specify at least one of the operations";
show_help("You must specify at least one of the operations");
if (NumOperations > 1)
throw "Only one operation may be specified";
show_help("Only one operation may be specified");
if (NumPositional > 1)
throw "You may only specify one of a, b, and i modifiers";
if (AddAfter || AddBefore || InsertBefore)
show_help("You may only specify one of a, b, and i modifiers");
if (AddAfter || AddBefore || InsertBefore) {
if (Operation != Move && Operation != ReplaceOrInsert)
throw "The 'a', 'b' and 'i' modifiers can only be specified with "
"the 'm' or 'r' operations";
show_help("The 'a', 'b' and 'i' modifiers can only be specified with "
"the 'm' or 'r' operations");
}
if (RecurseDirectories && Operation != ReplaceOrInsert)
throw "The 'R' modifiers is only applicabe to the 'r' operation";
show_help("The 'R' modifiers is only applicabe to the 'r' operation");
if (OriginalDates && Operation != Extract)
throw "The 'o' modifier is only applicable to the 'x' operation";
show_help("The 'o' modifier is only applicable to the 'x' operation");
if (TruncateNames && Operation!=QuickAppend && Operation!=ReplaceOrInsert)
throw "The 'f' modifier is only applicable to the 'q' and 'r' operations";
show_help("The 'f' modifier is only applicable to the 'q' and 'r' "
"operations");
if (OnlyUpdate && Operation != ReplaceOrInsert)
throw "The 'u' modifier is only applicable to the 'r' operation";
show_help("The 'u' modifier is only applicable to the 'r' operation");
if (Count > 1 && Members.size() > 1)
throw "Only one member name may be specified with the 'N' modifier";
show_help("Only one member name may be specified with the 'N' modifier");
// Return the parsed operation to the caller
return Operation;
@ -304,16 +324,16 @@ bool buildPaths(bool checkExistence, std::string* ErrMsg) {
for (unsigned i = 0; i < Members.size(); i++) {
sys::Path aPath;
if (!aPath.set(Members[i]))
throw std::string("File member name invalid: ") + Members[i];
fail(std::string("File member name invalid: ") + Members[i]);
if (checkExistence) {
bool Exists;
if (sys::fs::exists(aPath.str(), Exists) || !Exists)
throw std::string("File does not exist: ") + Members[i];
fail(std::string("File does not exist: ") + Members[i]);
std::string Err;
sys::PathWithStatus PwS(aPath);
const sys::FileStatus *si = PwS.getFileStatus(false, &Err);
if (!si)
throw Err;
fail(Err);
if (si->isDir) {
std::set<sys::Path> dirpaths;
if (recurseDirectories(aPath, dirpaths, ErrMsg))
@ -683,6 +703,7 @@ doReplaceOrInsert(std::string* ErrMsg) {
// main - main program for llvm-ar .. see comments in the code
int main(int argc, char **argv) {
program_name = argv[0];
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
@ -698,77 +719,61 @@ int main(int argc, char **argv) {
int exitCode = 0;
// Make sure we don't exit with "unhandled exception".
try {
// Do our own parsing of the command line because the CommandLine utility
// can't handle the grouped positional parameters without a dash.
ArchiveOperation Operation = parseCommandLine();
// Do our own parsing of the command line because the CommandLine utility
// can't handle the grouped positional parameters without a dash.
ArchiveOperation Operation = parseCommandLine();
// Check the path name of the archive
sys::Path ArchivePath;
if (!ArchivePath.set(ArchiveName))
throw std::string("Archive name invalid: ") + ArchiveName;
// Check the path name of the archive
sys::Path ArchivePath;
if (!ArchivePath.set(ArchiveName)) {
errs() << argv[0] << ": Archive name invalid: " << ArchiveName << "\n";
return 1;
}
// Create or open the archive object.
bool Exists;
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists) {
// Produce a warning if we should and we're creating the archive
if (!Create)
errs() << argv[0] << ": creating " << ArchivePath.str() << "\n";
TheArchive = Archive::CreateEmpty(ArchivePath, Context);
TheArchive->writeToDisk();
} else {
std::string Error;
TheArchive = Archive::OpenAndLoad(ArchivePath, Context, &Error);
if (TheArchive == 0) {
errs() << argv[0] << ": error loading '" << ArchivePath.str() << "': "
<< Error << "!\n";
return 1;
}
}
// Make sure we're not fooling ourselves.
assert(TheArchive && "Unable to instantiate the archive");
// Make sure we clean up the archive even on failure.
std::auto_ptr<Archive> AutoArchive(TheArchive);
// Perform the operation
std::string ErrMsg;
bool haveError = false;
switch (Operation) {
case Print: haveError = doPrint(&ErrMsg); break;
case Delete: haveError = doDelete(&ErrMsg); break;
case Move: haveError = doMove(&ErrMsg); break;
case QuickAppend: haveError = doQuickAppend(&ErrMsg); break;
case ReplaceOrInsert: haveError = doReplaceOrInsert(&ErrMsg); break;
case DisplayTable: haveError = doDisplayTable(&ErrMsg); break;
case Extract: haveError = doExtract(&ErrMsg); break;
case NoOperation:
errs() << argv[0] << ": No operation was selected.\n";
break;
}
if (haveError) {
errs() << argv[0] << ": " << ErrMsg << "\n";
// Create or open the archive object.
bool Exists;
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists) {
// Produce a warning if we should and we're creating the archive
if (!Create)
errs() << argv[0] << ": creating " << ArchivePath.str() << "\n";
TheArchive = Archive::CreateEmpty(ArchivePath, Context);
TheArchive->writeToDisk();
} else {
std::string Error;
TheArchive = Archive::OpenAndLoad(ArchivePath, Context, &Error);
if (TheArchive == 0) {
errs() << argv[0] << ": error loading '" << ArchivePath.str() << "': "
<< Error << "!\n";
return 1;
}
} catch (const char*msg) {
// These errors are usage errors, thrown only by the various checks in the
// code above.
errs() << argv[0] << ": " << msg << "\n\n";
cl::PrintHelpMessage();
exitCode = 1;
} catch (const std::string& msg) {
// These errors are thrown by LLVM libraries (e.g. lib System) and represent
// a more serious error so we bump the exitCode and don't print the usage.
errs() << argv[0] << ": " << msg << "\n";
exitCode = 2;
} catch (...) {
// This really shouldn't happen, but just in case ....
errs() << argv[0] << ": An unexpected unknown exception occurred.\n";
exitCode = 3;
}
// Make sure we're not fooling ourselves.
assert(TheArchive && "Unable to instantiate the archive");
// Perform the operation
std::string ErrMsg;
bool haveError = false;
switch (Operation) {
case Print: haveError = doPrint(&ErrMsg); break;
case Delete: haveError = doDelete(&ErrMsg); break;
case Move: haveError = doMove(&ErrMsg); break;
case QuickAppend: haveError = doQuickAppend(&ErrMsg); break;
case ReplaceOrInsert: haveError = doReplaceOrInsert(&ErrMsg); break;
case DisplayTable: haveError = doDisplayTable(&ErrMsg); break;
case Extract: haveError = doExtract(&ErrMsg); break;
case NoOperation:
errs() << argv[0] << ": No operation was selected.\n";
break;
}
if (haveError) {
errs() << argv[0] << ": " << ErrMsg << "\n";
return 1;
}
delete TheArchive;
TheArchive = 0;
// Return result code back to operating system.
return exitCode;
}

1
tools/llvm-as/CMakeLists.txt
View File

@ -1,5 +1,4 @@
set(LLVM_LINK_COMPONENTS asmparser bitwriter)
set(LLVM_REQUIRES_EH 1)
add_llvm_tool(llvm-as
llvm-as.cpp

1
tools/llvm-bcanalyzer/CMakeLists.txt
View File

@ -1,5 +1,4 @@
set(LLVM_LINK_COMPONENTS bitreader)
set(LLVM_REQUIRES_EH 1)
add_llvm_tool(llvm-bcanalyzer
llvm-bcanalyzer.cpp

1
tools/llvm-dis/CMakeLists.txt
View File

@ -1,5 +1,4 @@
set(LLVM_LINK_COMPONENTS bitreader analysis)
set(LLVM_REQUIRES_EH 1)
add_llvm_tool(llvm-dis
llvm-dis.cpp

1
tools/llvm-ranlib/CMakeLists.txt
View File

@ -1,5 +1,4 @@
set(LLVM_LINK_COMPONENTS archive)
set(LLVM_REQUIRES_EH 1)
add_llvm_tool(llvm-ranlib
llvm-ranlib.cpp

1
tools/llvm-ranlib/Makefile
View File

@ -10,7 +10,6 @@
LEVEL := ../..
TOOLNAME := llvm-ranlib
LINK_COMPONENTS := archive
REQUIRES_EH := 1
# This tool has no plugins, optimize startup time.
TOOL_NO_EXPORTS := 1

67
tools/llvm-ranlib/llvm-ranlib.cpp
View File

@ -61,41 +61,38 @@ int main(int argc, char **argv) {
int exitCode = 0;
// Make sure we don't exit with "unhandled exception".
try {
// Check the path name of the archive
sys::Path ArchivePath;
if (!ArchivePath.set(ArchiveName))
throw std::string("Archive name invalid: ") + ArchiveName;
// Make sure it exists, we don't create empty archives
bool Exists;
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists)
throw std::string("Archive file does not exist");
std::string err_msg;
std::auto_ptr<Archive>
AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg));
Archive* TheArchive = AutoArchive.get();
if (!TheArchive)
throw err_msg;
if (TheArchive->writeToDisk(true, false, &err_msg ))
throw err_msg;
if (Verbose)
printSymbolTable(TheArchive);
} catch (const char* msg) {
errs() << argv[0] << ": " << msg << "\n\n";
exitCode = 1;
} catch (const std::string& msg) {
errs() << argv[0] << ": " << msg << "\n";
exitCode = 2;
} catch (...) {
errs() << argv[0] << ": An unexpected unknown exception occurred.\n";
exitCode = 3;
// Check the path name of the archive
sys::Path ArchivePath;
if (!ArchivePath.set(ArchiveName)) {
errs() << argv[0] << ": " << "Archive name invalid: " << ArchiveName <<
"\n";
return 1;
}
// Make sure it exists, we don't create empty archives
bool Exists;
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists) {
errs() << argv[0] << ": " << "Archive file does not exist" <<
ArchivePath.str() << "\n";
return 1;
}
std::string err_msg;
std::auto_ptr<Archive>
AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg));
Archive* TheArchive = AutoArchive.get();
if (!TheArchive) {
errs() << argv[0] << ": " << err_msg << "\n";
return 1;
}
if (TheArchive->writeToDisk(true, false, &err_msg )) {
errs() << argv[0] << ": " << err_msg << "\n";
return 1;
}
if (Verbose)
printSymbolTable(TheArchive);
return exitCode;
}