Introduce x87 port

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include "../include/v8stdint.h"
 
 #include "base/macros.h"
@@ skipping 59 matching lines @@
 # define CAN_USE_ARMV7_INSTRUCTIONS 1
 # ifndef CAN_USE_VFP3_INSTRUCTIONS
 #  define CAN_USE_VFP3_INSTRUCTIONS
 # endif
 #endif
 
 
 // Target architecture detection. This may be set externally. If not, detect
 // in the same way as the host architecture, that is, target the native
 // environment as presented by the compiler.
-#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && \
+#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_X87 &&\
     !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS
 #if defined(_M_X64) || defined(__x86_64__)
 #define V8_TARGET_ARCH_X64 1
 #elif defined(_M_IX86) || defined(__i386__)
 #define V8_TARGET_ARCH_IA32 1
 #elif defined(__AARCH64EL__)
 #define V8_TARGET_ARCH_ARM64 1
 #elif defined(__ARMEL__)
 #define V8_TARGET_ARCH_ARM 1
 #elif defined(__MIPSEB__) || defined(__MIPSEL__)
@@ skipping 43 matching lines @@
 #elif V8_TARGET_ARCH_ARM
 #define V8_TARGET_LITTLE_ENDIAN 1
 #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
+#elif V8_TARGET_ARCH_X87
+#define V8_TARGET_LITTLE_ENDIAN 1
 #else
 #error Unknown target architecture endianness
 #endif
 
 // Determine whether the architecture uses an out-of-line constant pool.
 #define V8_OOL_CONSTANT_POOL 0
 
 // Support for alternative bool type. This is only enabled if the code is
 // compiled with USE_MYBOOL defined. This catches some nasty type bugs.
 // For instance, 'bool b = "false";' results in b == true! This is a hidden
@@ skipping 175 matching lines @@
 // Declarations for use in both the preparser and the rest of V8.
 
 // The Strict Mode (ECMA-262 5th edition, 4.2.2).
 
 enum StrictMode { SLOPPY, STRICT };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_GLOBALS_H_