Support for MIPS in architecture independent files....

src/mips/register-allocator-mips-inl.h

Index: src/mips/register-allocator-mips-inl.h
===================================================================
--- src/mips/register-allocator-mips-inl.h	(revision 0)
+++ src/mips/register-allocator-mips-inl.h	(revision 0)
@@ -0,0 +1,113 @@
+#ifndef V8_IA32_REGISTER_ALLOCATOR_IA32_INL_H_
+#define V8_IA32_REGISTER_ALLOCATOR_IA32_INL_H_
+
+#include "v8.h"
+#include "mips/assembler-mips.h"
+
+namespace v8 {
+namespace internal {
+
+// -------------------------------------------------------------------------
+// RegisterAllocator implementation.
+
+// TODO : implement bool RegisterAllocator::IsReserved
+bool RegisterAllocator::IsReserved(Register reg) {
+  // The code for this test relies on the order of register codes.
+  return reg.is(cp) || reg.is(s8_fp) || reg.is(sp);
+}
+
+
+// TODO : modifiy kNumbers for reserved registers
+// TODO : cf other architectures code
+
+int RegisterAllocator::ToNumber(Register reg) {
+  ASSERT(reg.is_valid() && !IsReserved(reg));
+  const int kNumbers[] = {
+		0,	// zero_reg
+		1,	// at
+		2,	// v0
+		3,	// v1
+		4,	// a0
+		5,	// a1
+		6,	// a2
+		7,	// a3
+		8,	// t0
+		9,	// t1
+		10,	// t2
+		11,	// t3
+		12,	// t4
+		13,	// t5
+		14,	// t
+		15,	// t7
+		16,	// t8
+		17,	// t9
+		18,	// s0
+		19,	// s1
+		20,	// s2
+		21,	// s3
+		22,	// s4
+		23,	// s5
+		24,	// s6
+		25,	// s7
+		26,	// k0
+		27,	// k1
+		28,	// gp
+		29,	// sp
+		30,	// s8_fp
+		31,	// ra
+  };
+  return kNumbers[reg.code()];
+}
+
+
+Register RegisterAllocator::ToRegister(int num) {
+  ASSERT(num >= 0 && num < kNumRegisters);
+  const Register kRegisters[] = {
+		zero_reg,
+		at,
+		v0,
+		v1,
+		a0,
+		a1,
+		a2,
+		a3,
+		t0,
+		t1,
+		t2,
+		t3,
+		t4,
+		t5,
+		t6,
+		t7,
+		s0,
+		s1,
+		s2,
+		s3,
+		s4,
+		s5,
+		s6,
+		s7,
+		t8,
+		t9,
+		k0,
+		k1,
+		gp,
+		sp,
+		s8_fp,
+		ra
+  };
+  return kRegisters[num];
+}
+
+
+void RegisterAllocator::Initialize() {
+  Reset();
+  // The non-reserved a1 and ra registers are live on JS function entry.
+  Use(a1);  // JS function.
+  Use(ra);  // Return address.
+}
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_IA32_REGISTER_ALLOCATOR_IA32_INL_H_