[bpf] change llvm-objdump to print dec instead of hex

since bpf instruction stream is multiple of 8 change llvm-objdump
to print decimal instruction number instead of hex address, so that
users don't have to do this math manually to match kernel verifier output

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
llvm-svn: 289569

1 files changed, 23 insertions, 0 deletions

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 319d8afcc0b..8373f0ce3f1 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -594,6 +594,26 @@ public:
 };
 AMDGCNPrettyPrinter AMDGCNPrettyPrinterInst;
 
+class BPFPrettyPrinter : public PrettyPrinter {
+public:
+  void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
+                 uint64_t Address, raw_ostream &OS, StringRef Annot,
+                 MCSubtargetInfo const &STI, SourcePrinter *SP) override {
+    if (SP && (PrintSource || PrintLines))
+      SP->printSourceLine(OS, Address);
+    OS << format("%8" PRId64 ":", Address / 8);
+    if (!NoShowRawInsn) {
+      OS << "\t";
+      dumpBytes(Bytes, OS);
+    }
+    if (MI)
+      IP.printInst(MI, OS, "", STI);
+    else
+      OS << " <unknown>";
+  }
+};
+BPFPrettyPrinter BPFPrettyPrinterInst;
+
 PrettyPrinter &selectPrettyPrinter(Triple const &Triple) {
   switch(Triple.getArch()) {
   default:
@@ -602,6 +622,9 @@ PrettyPrinter &selectPrettyPrinter(Triple const &Triple) {
     return HexagonPrettyPrinterInst;
   case Triple::amdgcn:
     return AMDGCNPrettyPrinterInst;
+  case Triple::bpfel:
+  case Triple::bpfeb:
+    return BPFPrettyPrinterInst;
   }
 }
 }