Contribution of PowerPC port (continuation of 422063005) - PPC dir update 2 - mark2

src/ppc/disasm-ppc.cc

Index: src/ppc/disasm-ppc.cc
diff --git a/src/ppc/disasm-ppc.cc b/src/ppc/disasm-ppc.cc
index 3472828eee73c2dfd1cbb500e1e5d2d6e5990a9f..2486741350b6063a7087d815950903701e9a49cb 100644
--- a/src/ppc/disasm-ppc.cc
+++ b/src/ppc/disasm-ppc.cc
@@ -988,6 +988,15 @@ int Decoder::InstructionDecode(byte* instr_ptr) {
   out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%08x       ",
                               instr->InstructionBits());
 
+#if ABI_USES_FUNCTION_DESCRIPTORS
+  // The first field will be identified as a jump table entry.  We emit the rest
+  // of the structure as zero, so just skip past them.
+  if (instr->InstructionBits() == 0) {
+    Format(instr, "constant");
+    return Instruction::kInstrSize;
+  }
+#endif
+
   switch (instr->OpcodeValue() << 26) {
     case TWI: {
       PrintSoftwareInterrupt(instr->SvcValue());