[MIPS] Use hard float calling convention for managed code

Note that this isn't o32 ABI. Same set of registers is used for
arguments ($a0-$a3 and $f12-$f15), but we don't skip registers
and fp arguments are never passed via core registers.

Change-Id: Ifb883ff6e15758b539137898b49ac2f8ee075f49

1 files changed, 14 insertions, 1 deletions

diff --git a/compiler/utils/mips/assembler_mips.h b/compiler/utils/mips/assembler_mips.h
index df95daddc1..6c8b162d62 100644
--- a/compiler/utils/mips/assembler_mips.h
+++ b/compiler/utils/mips/assembler_mips.h
@@ -141,7 +141,7 @@ class MipsAssembler FINAL : public Assembler {
   void LoadSFromOffset(FRegister reg, Register base, int32_t offset);
   void LoadDFromOffset(DRegister reg, Register base, int32_t offset);
   void StoreToOffset(StoreOperandType type, Register reg, Register base, int32_t offset);
-  void StoreFToOffset(FRegister reg, Register base, int32_t offset);
+  void StoreSToOffset(FRegister reg, Register base, int32_t offset);
   void StoreDToOffset(DRegister reg, Register base, int32_t offset);
 
   // Emit data (e.g. encoded instruction or immediate) to the instruction stream.
@@ -277,6 +277,19 @@ class MipsAssembler FINAL : public Assembler {
   int32_t EncodeBranchOffset(int offset, int32_t inst, bool is_jump);
   int DecodeBranchOffset(int32_t inst, bool is_jump);
 
+  FRegister ConvertDRegToFReg(DRegister reg) {
+    return static_cast<FRegister>(reg * 2);
+  }
+  Register ConvertDRegToReg(DRegister reg) {
+    return static_cast<Register>(reg * 2);
+  }
+  Register ConvertFRegToReg(FRegister reg) {
+    return static_cast<Register>(reg);
+  }
+  FRegister ConvertRegToFReg(Register reg) {
+    return static_cast<FRegister>(reg);
+  }
+
   DISALLOW_COPY_AND_ASSIGN(MipsAssembler);
 };