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Test harness for the LLVM disassembler. When invoked

Browse Source 
with -disassemble, llvm-mc now accepts lines of the
form
0x00 0x00
and passes the resulting bytes to the disassembler for
the chosen (or default) target, printing the result.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91579 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sean Callanan
2009-12-17 01:49:59 +00:00
parent 4c2b001f13
commit ba847da571
3 changed files with 227 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
tools/llvm-mc/llvm-mc.cpp
View File

@ -32,6 +32,7 @@
#include "llvm/Target/TargetMachine.h" // FIXME.
#include "llvm/Target/TargetSelect.h"
#include "AsmParser.h"
#include "HexDisassembler.h"
using namespace llvm;
static cl::opt<std::string>
@ -76,7 +77,8 @@ TripleName("triple", cl::desc("Target triple to assemble for, "
enum ActionType {
AC_AsLex,
AC_Assemble
AC_Assemble,
AC_Disassemble
};
static cl::opt<ActionType>
@ -86,6 +88,8 @@ Action(cl::desc("Action to perform:"),
"Lex tokens from a .s file"),
clEnumValN(AC_Assemble, "assemble",
"Assemble a .s file (default)"),
clEnumValN(AC_Disassemble, "disassemble",
"Disassemble strings of hex bytes"),
clEnumValEnd));
static const Target *GetTarget(const char *ProgName) {
@ -281,7 +285,33 @@ static int AssembleInput(const char *ProgName) {
delete Out;
return Res;
}
}
static int DisassembleInput(const char *ProgName) {
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
if (TheTarget == 0) {
errs() << ProgName << ": error: unable to get target for '" << TripleName
<< "', see --version and --triple.\n";
return 0;
}
std::string ErrorMessage;
MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
&ErrorMessage);
if (Buffer == 0) {
errs() << ProgName << ": ";
if (ErrorMessage.size())
errs() << ErrorMessage << "\n";
else
errs() << "input file didn't read correctly.\n";
return 1;
}
return HexDisassembler::disassemble(*TheTarget, TripleName, *Buffer);
}
int main(int argc, char **argv) {
@ -296,6 +326,7 @@ int main(int argc, char **argv) {
llvm::InitializeAllTargets();
llvm::InitializeAllAsmPrinters();
llvm::InitializeAllAsmParsers();
llvm::InitializeAllDisassemblers();
cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
@ -305,6 +336,8 @@ int main(int argc, char **argv) {
return AsLexInput(argv[0]);
case AC_Assemble:
return AssembleInput(argv[0]);
case AC_Disassemble:
return DisassembleInput(argv[0]);
}
return 0;