From 8e44a04ea9855870c54d70803f01f107d2355763 Mon Sep 17 00:00:00 2001
From: "haitao.feng@intel.com"
 <haitao.feng@intel.com@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Fri, 11 Apr 2014 02:02:56 +0000
Subject: [PATCH] Rename PushInt64AsTwoSmis to PushRegisterAsTwoSmis and
 support x32 as well.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/232533002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20662 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/x64/debug-x64.cc           |  4 ++--
 src/x64/macro-assembler-x64.cc | 10 ++++++----
 src/x64/macro-assembler-x64.h  | 10 +++++-----
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/x64/debug-x64.cc b/src/x64/debug-x64.cc
index 36d5df6..a65dd29 100644
--- a/src/x64/debug-x64.cc
+++ b/src/x64/debug-x64.cc
@@ -124,7 +124,7 @@ static void Generate_DebugBreakCallHelper(MacroAssembler* masm,
         __ Push(reg);
       }
       if ((non_object_regs & (1 << r)) != 0) {
-        __ PushInt64AsTwoSmis(reg);
+        __ PushRegisterAsTwoSmis(reg);
       }
     }
 
@@ -149,7 +149,7 @@ static void Generate_DebugBreakCallHelper(MacroAssembler* masm,
       }
       // Reconstruct the 64-bit value from two smis.
       if ((non_object_regs & (1 << r)) != 0) {
-        __ PopInt64AsTwoSmis(reg);
+        __ PopRegisterAsTwoSmis(reg);
       }
     }
 
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 693a5c6..80f61db 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2283,10 +2283,11 @@ void MacroAssembler::Push(Smi* source) {
 }
 
 
-void MacroAssembler::PushInt64AsTwoSmis(Register src, Register scratch) {
+void MacroAssembler::PushRegisterAsTwoSmis(Register src, Register scratch) {
+  ASSERT(!src.is(scratch));
   movp(scratch, src);
   // High bits.
-  shrp(src, Immediate(64 - kSmiShift));
+  shrp(src, Immediate(kPointerSize * kBitsPerByte - kSmiShift));
   shlp(src, Immediate(kSmiShift));
   Push(src);
   // Low bits.
@@ -2295,14 +2296,15 @@ void MacroAssembler::PushInt64AsTwoSmis(Register src, Register scratch) {
 }
 
 
-void MacroAssembler::PopInt64AsTwoSmis(Register dst, Register scratch) {
+void MacroAssembler::PopRegisterAsTwoSmis(Register dst, Register scratch) {
+  ASSERT(!dst.is(scratch));
   Pop(scratch);
   // Low bits.
   shrp(scratch, Immediate(kSmiShift));
   Pop(dst);
   shrp(dst, Immediate(kSmiShift));
   // High bits.
-  shlp(dst, Immediate(64 - kSmiShift));
+  shlp(dst, Immediate(kPointerSize * kBitsPerByte - kSmiShift));
   orp(dst, scratch);
 }
 
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index ee4fb85..4a2fa8e 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -726,12 +726,12 @@ class MacroAssembler: public Assembler {
 
   void Push(Smi* smi);
 
-  // Save away a 64-bit integer on the stack as two 32-bit integers
+  // Save away a raw integer with pointer size on the stack as two integers
   // masquerading as smis so that the garbage collector skips visiting them.
-  void PushInt64AsTwoSmis(Register src, Register scratch = kScratchRegister);
-  // Reconstruct a 64-bit integer from two 32-bit integers masquerading as
-  // smis on the top of stack.
-  void PopInt64AsTwoSmis(Register dst, Register scratch = kScratchRegister);
+  void PushRegisterAsTwoSmis(Register src, Register scratch = kScratchRegister);
+  // Reconstruct a raw integer with pointer size from two integers masquerading
+  // as smis on the top of stack.
+  void PopRegisterAsTwoSmis(Register dst, Register scratch = kScratchRegister);
 
   void Test(const Operand& dst, Smi* source);
 
-- 
2.7.4