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Add the ability for users to specify a specific argv[0] to pass into the

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program


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9565 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-10-28 22:51:44 +00:00
parent d09bef4d46
commit e69671d65b
1 changed files with 16 additions and 7 deletions
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23
tools/lli/lli.cpp
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@ -42,6 +42,11 @@ namespace {
cl::opt<bool> ForceInterpreter("force-interpreter",
cl::desc("Force interpretation: disable JIT"),
cl::init(false));
cl::opt<std::string>
FakeArgv0("fake-argv0",
cl::desc("Override the 'argv[0]' value passed into the executing"
" program"), cl::value_desc("executable"));
}
static std::vector<std::string> makeStringVector(char * const *envp) {
@ -138,14 +143,18 @@ int main(int argc, char **argv, char * const *envp) {
ExecutionEngine::create(MP, ForceInterpreter);
assert(EE && "Couldn't create an ExecutionEngine, not even an interpreter?");
// Add the module's name to the start of the vector of arguments to main().
// But delete .bc first, since programs (and users) might not expect to
// see it.
const std::string ByteCodeFileSuffix(".bc");
if (InputFile.rfind(ByteCodeFileSuffix) ==
InputFile.length() - ByteCodeFileSuffix.length()) {
InputFile.erase (InputFile.length() - ByteCodeFileSuffix.length());
// If the user specifically requested an argv[0] to pass into the program, do
// it now.
if (!FakeArgv0.empty()) {
InputFile = FakeArgv0;
} else {
// Otherwise, if there is a .bc suffix on the executable strip it off, it
// might confuse the program.
if (InputFile.rfind(".bc") == InputFile.length() - 3)
InputFile.erase(InputFile.length() - 3);
}
// Add the module's name to the start of the vector of arguments to main().
InputArgv.insert(InputArgv.begin(), InputFile);
// Run the main function!