Implement support for printing register and immediate operands,
add support for darwin vs aix syntax. We now can print instructions
like this:
add r3, r3, r4
blr
and (in aix mode):
add 3, 3, 4
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119062 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
index adb93f2..767dc52 100644
--- a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
+++ b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
@@ -13,9 +13,9 @@
#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"
@@ -39,3 +39,38 @@
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();
+}
+