Contribution of PowerPC port.

src/disassembler.cc

Index: src/disassembler.cc
diff --git a/src/disassembler.cc b/src/disassembler.cc
index 942b2be4527120ccbd3343bc24d510276d1cdc13..05e1a117a387129ac389ef63f44be2804c80e850 100644
--- a/src/disassembler.cc
+++ b/src/disassembler.cc
@@ -107,11 +107,14 @@ static int DecodeIt(Isolate* isolate,
   } else {
     // No relocation information when printing code stubs.
   }
+#if !V8_TARGET_ARCH_PPC

[Sven Panne, 2014/09/01 07:55:16]

No architecture-dependent #ifdefs in this file, please.

   int constants = -1;  // no constants being decoded at the start
+#endif
 
   while (pc < end) {
     // First decode instruction so that we know its length.
     byte* prev_pc = pc;
+#if !V8_TARGET_ARCH_PPC
     if (constants > 0) {
       SNPrintF(decode_buffer,
                "%08x       constant",
@@ -136,6 +139,22 @@ static int DecodeIt(Isolate* isolate,
                  ptr - begin);
         pc += 4;
       } else {
+#elif ABI_USES_FUNCTION_DESCRIPTORS || V8_OOL_CONSTANT_POOL
+    // V8_TARGET_ARCH_PPC
+    {
+      // Function descriptors are specially decoded and skipped.
+      // Other internal references (load of ool constant pool pointer)
+      // are not since they are a encoded as a regular mov sequence.
+      int skip;
+      if (it != NULL && !it->done() && it->rinfo()->pc() == pc &&
+          it->rinfo()->rmode() == RelocInfo::INTERNAL_REFERENCE &&
+          (skip = Assembler::DecodeInternalReference(decode_buffer, pc))) {
+        pc += skip;
+      } else {
+#else
+    {
+      {
+#endif
         decode_buffer[0] = '\0';
         pc += d.InstructionDecode(decode_buffer, pc);
       }