Allow mixing of thread offsets between 32 and 64bit architectures.

Begin a more full implementation x86-64 REX prefixes.
Doesn't implement 64bit thread offset support for the JNI compiler.

Change-Id: If9af2f08a1833c21ddb4b4077f9b03add1a05147
diff --git a/compiler/dex/quick/mips/codegen_mips.h b/compiler/dex/quick/mips/codegen_mips.h
index bc1ad02..0f9da6a 100644
--- a/compiler/dex/quick/mips/codegen_mips.h
+++ b/compiler/dex/quick/mips/codegen_mips.h
@@ -30,7 +30,7 @@
     bool SmallLiteralDivRem(Instruction::Code dalvik_opcode, bool is_div, RegLocation rl_src,
                             RegLocation rl_dest, int lit);
     LIR* CheckSuspendUsingLoad() OVERRIDE;
-    RegStorage LoadHelper(ThreadOffset offset);
+    RegStorage LoadHelper(ThreadOffset<4> offset);
     LIR* LoadBaseDisp(int r_base, int displacement, int r_dest, OpSize size, int s_reg);
     LIR* LoadBaseDisp(RegStorage r_base, int displacement, RegStorage r_dest, OpSize size,
                       int s_reg);
@@ -170,12 +170,12 @@
     LIR* OpRegRegImm(OpKind op, RegStorage r_dest, RegStorage r_src1, int value);
     LIR* OpRegRegReg(OpKind op, RegStorage r_dest, RegStorage r_src1, RegStorage r_src2);
     LIR* OpTestSuspend(LIR* target);
-    LIR* OpThreadMem(OpKind op, ThreadOffset thread_offset);
+    LIR* OpThreadMem(OpKind op, ThreadOffset<4> thread_offset);
     LIR* OpVldm(RegStorage r_base, int count);
     LIR* OpVstm(RegStorage r_base, int count);
     void OpLea(RegStorage r_base, RegStorage reg1, RegStorage reg2, int scale, int offset);
     void OpRegCopyWide(RegStorage dest, RegStorage src);
-    void OpTlsCmp(ThreadOffset offset, int val);
+    void OpTlsCmp(ThreadOffset<4> offset, int val);
 
     // TODO: collapse r_dest.
     LIR* LoadBaseDispBody(RegStorage r_base, int displacement, RegStorage r_dest,