Add X32 port into V8

src/x64/debug-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 77 matching lines @@
 
 void BreakLocationIterator::ClearDebugBreakAtSlot() {
   ASSERT(IsDebugBreakSlot());
   rinfo()->PatchCode(original_rinfo()->pc(), Assembler::kDebugBreakSlotLength);
 }
 
 const bool Debug::FramePaddingLayout::kIsSupported = true;
 
 
 #define __ ACCESS_MASM(masm)
+#define __q __
 
 
 static void Generate_DebugBreakCallHelper(MacroAssembler* masm,
                                           RegList object_regs,
                                           RegList non_object_regs,
                                           bool convert_call_to_jmp) {
   // Enter an internal frame.
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
 
@@ skipping 11 matching lines @@
     ASSERT((object_regs & non_object_regs) == 0);
     for (int i = 0; i < kNumJSCallerSaved; i++) {
       int r = JSCallerSavedCode(i);
       Register reg = { r };
       ASSERT(!reg.is(kScratchRegister));
       if ((object_regs & (1 << r)) != 0) {
         __ push(reg);
       }
       // Store the 64-bit value as two smis.
       if ((non_object_regs & (1 << r)) != 0) {
+#ifndef V8_TARGET_ARCH_X32
         __ movq(kScratchRegister, reg);
         __ Integer32ToSmi(reg, reg);
         __ push(reg);
         __ sar(kScratchRegister, Immediate(32));
         __ Integer32ToSmi(kScratchRegister, kScratchRegister);
         __ push(kScratchRegister);
+#else
+        if (FLAG_debug_code) {
+          __ testl(reg, Immediate(0xc0000000));
+          __ Assert(zero, "Unable to encode value as smi");
+        }
+        __ Integer32ToSmi(reg, reg);
+        __ Push(reg);
+#endif
       }
     }
 
 #ifdef DEBUG
     __ RecordComment("// Calling from debug break to runtime - come in - over");
 #endif
     __ Set(rax, 0);  // No arguments (argc == 0).
     __ movq(rbx, ExternalReference::debug_break(masm->isolate()));
 
     CEntryStub ceb(1);
     __ CallStub(&ceb);
 
     // Restore the register values from the expression stack.
     for (int i = kNumJSCallerSaved - 1; i >= 0; i--) {
       int r = JSCallerSavedCode(i);
       Register reg = { r };
       if (FLAG_debug_code) {
         __ Set(reg, kDebugZapValue);
       }
       if ((object_regs & (1 << r)) != 0) {
         __ pop(reg);
       }
       // Reconstruct the 64-bit value from two smis.
       if ((non_object_regs & (1 << r)) != 0) {
+#ifndef V8_TARGET_ARCH_X32
         __ pop(kScratchRegister);
         __ SmiToInteger32(kScratchRegister, kScratchRegister);
         __ shl(kScratchRegister, Immediate(32));
         __ pop(reg);
         __ SmiToInteger32(reg, reg);
         __ or_(reg, kScratchRegister);
+#else
+        __ Pop(reg);
+        __ SmiToInteger32(reg, reg);
+#endif
       }
     }
 
     // Read current padding counter and skip corresponding number of words.
     __ pop(kScratchRegister);
     __ SmiToInteger32(kScratchRegister, kScratchRegister);
     __ lea(rsp, Operand(rsp, kScratchRegister, times_pointer_size, 0));
 
     // Get rid of the internal frame.
   }
 
   // If this call did not replace a call but patched other code then there will
   // be an unwanted return address left on the stack. Here we get rid of that.
   if (convert_call_to_jmp) {
-    __ addq(rsp, Immediate(kPointerSize));
+    __q addq(rsp, Immediate(kPointerSize));
   }
 
   // Now that the break point has been handled, resume normal execution by
   // jumping to the target address intended by the caller and that was
   // overwritten by the address of DebugBreakXXX.
   ExternalReference after_break_target =
       ExternalReference(Debug_Address::AfterBreakTarget(), masm->isolate());
   __ movq(kScratchRegister, after_break_target);
+#ifndef V8_TARGET_ARCH_X32
   __ jmp(Operand(kScratchRegister, 0));
+#else
+  __ Jump(Operand(kScratchRegister, 0));
+#endif
 }
 
 
 void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) {
   // Register state for IC load call (from ic-x64.cc).
   // ----------- S t a t e -------------
   //  -- rax    : receiver
   //  -- rcx    : name
   // -----------------------------------
   Generate_DebugBreakCallHelper(masm, rax.bit() | rcx.bit(), 0, false);
@@ skipping 148 matching lines @@
   __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
   __ movq(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset));
   __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize));
 
   // Re-run JSFunction, rdi is function, rsi is context.
   __ jmp(rdx);
 }
 
 const bool Debug::kFrameDropperSupported = true;
 
+#undef __q
 #undef __
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64