diff -r 000000000000 -r 6474c204b198 js/src/jit/mips/Architecture-mips.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit/mips/Architecture-mips.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,76 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jit/mips/Architecture-mips.h"
+
+#include <elf.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#define HWCAP_MIPS (1 << 31)
+#define HWCAP_FPU (1 << 0)
+
+namespace js {
+namespace jit {
+
+uint32_t GetMIPSFlags()
+{
+    static bool isSet = false;
+    static uint32_t flags = 0;
+    if (isSet)
+        return flags;
+#if WTF_OS_LINUX
+    FILE *fp = fopen("/proc/cpuinfo", "r");
+    if (!fp)
+        return false;
+
+    char buf[1024];
+    memset(buf, 0, sizeof(buf));
+    fread(buf, sizeof(char), sizeof(buf)-1, fp);
+    fclose(fp);
+    if (strstr(buf, "FPU"))
+        flags |= HWCAP_FPU;
+
+    isSet = true;
+    return flags;
+#endif
+
+    return false;
+}
+
+bool hasFPU()
+{
+    return js::jit::GetMIPSFlags() & HWCAP_FPU;
+}
+
+Registers::Code
+Registers::FromName(const char *name)
+{
+    for (size_t i = 0; i < Total; i++) {
+        if (strcmp(GetName(i), name) == 0)
+            return Code(i);
+    }
+
+    return Invalid;
+}
+
+FloatRegisters::Code
+FloatRegisters::FromName(const char *name)
+{
+    for (size_t i = 0; i < Total; i++) {
+        if (strcmp(GetName(i), name) == 0)
+            return Code(i);
+    }
+
+    return Invalid;
+}
+
+
+
+} // namespace ion
+} // namespace js
+