#define DEBUG_TYPE "asm-printer"
#include "PPCInstPrinter.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
//#include "llvm/MC/MCAsmInfo.h"
-//#include "llvm/MC/MCExpr.h"
//#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/raw_ostream.h"
printInstruction(MI, O);
}
+/// stripRegisterPrefix - This method strips the character prefix from a
+/// register name so that only the number is left. Used by for linux asm.
+const char *stripRegisterPrefix(const char *RegName) {
+ switch (RegName[0]) {
+ case 'r':
+ case 'f':
+ case 'v': return RegName + 1;
+ case 'c': if (RegName[1] == 'r') return RegName + 2;
+ }
+
+ return RegName;
+}
+
+void PPCInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
+ raw_ostream &O) {
+ const MCOperand &Op = MI->getOperand(OpNo);
+ if (Op.isReg()) {
+ const char *RegName = getRegisterName(Op.getReg());
+ // The linux and AIX assembler does not take register prefixes.
+ if (!isDarwinSyntax())
+ RegName = stripRegisterPrefix(RegName);
+
+ O << RegName;
+ return;
+ }
+
+ if (Op.isImm()) {
+ O << Op.getImm();
+ return;
+ }
+
+ assert(Op.isExpr() && "unknown operand kind in printOperand");
+ O << *Op.getExpr();
+}
+
class MCOperand;
class PPCInstPrinter : public MCInstPrinter {
+ // 0 -> AIX, 1 -> Darwin.
+ unsigned SyntaxVariant;
public:
- PPCInstPrinter(const MCAsmInfo &MAI) : MCInstPrinter(MAI) {}
+ PPCInstPrinter(const MCAsmInfo &MAI, unsigned syntaxVariant)
+ : MCInstPrinter(MAI), SyntaxVariant(syntaxVariant) {}
+
+ bool isDarwinSyntax() const {
+ return SyntaxVariant == 1;
+ }
virtual void printInst(const MCInst *MI, raw_ostream &O);
virtual StringRef getOpcodeName(unsigned Opcode) const;
static const char *getRegisterName(unsigned RegNo);
- void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {}
+ void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
void printPredicateOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O, const char *Modifier) {}
static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
unsigned SyntaxVariant,
const MCAsmInfo &MAI) {
- if (SyntaxVariant == 0)
- return new PPCInstPrinter(MAI);
- return 0;
+ return new PPCInstPrinter(MAI, SyntaxVariant);
}