MIPS: Add big-endian support for MIPS.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index db666d804b1039e0a61dce21c55302d5e7a4a174..92401f6b3951cc11b892744c574d4596e161f999 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -78,7 +78,7 @@ namespace internal {
 #elif defined(__ARMEL__)
 #define V8_HOST_ARCH_ARM 1
 #define V8_HOST_ARCH_32_BIT 1
-#elif defined(__MIPSEL__)
+#elif defined(__MIPSEB__) || defined(__MIPSEL__)
 #define V8_HOST_ARCH_MIPS 1
 #define V8_HOST_ARCH_32_BIT 1
 #else
@@ -108,7 +108,7 @@ namespace internal {
 #define V8_TARGET_ARCH_ARM64 1
 #elif defined(__ARMEL__)
 #define V8_TARGET_ARCH_ARM 1
-#elif defined(__MIPSEL__)
+#elif defined(__MIPSEB__) || defined(__MIPSEL__)
 #define V8_TARGET_ARCH_MIPS 1
 #else
 #error Target architecture was not detected as supported by v8
@@ -147,7 +147,7 @@ namespace internal {
 #endif
 #endif
 
-// Determine architecture endiannes (we only support little-endian).
+// Determine architecture endianness.
 #if V8_TARGET_ARCH_IA32
 #define V8_TARGET_LITTLE_ENDIAN 1
 #elif V8_TARGET_ARCH_X64
@@ -157,9 +157,13 @@ namespace internal {
 #elif V8_TARGET_ARCH_ARM64
 #define V8_TARGET_LITTLE_ENDIAN 1
 #elif V8_TARGET_ARCH_MIPS
+#if defined(__MIPSEB__)
+#define V8_TARGET_BIG_ENDIAN 1
+#else
 #define V8_TARGET_LITTLE_ENDIAN 1
+#endif
 #else
-#error Unknown target architecture endiannes
+#error Unknown target architecture endianness
 #endif
 
 // Determine whether the architecture uses an out-of-line constant pool.