MIPS port initial commit

SConstruct

 # Copyright 2008 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 173 matching lines @@
     'simulator:arm': {
       'CCFLAGS':      ['-m32'],
       'LINKFLAGS':    ['-m32']
     },
     'armvariant:thumb2': {
       'CPPDEFINES':   ['V8_ARM_VARIANT_THUMB']
     },
     'armvariant:arm': {
       'CPPDEFINES':   ['V8_ARM_VARIANT_ARM']
     },
+    'arch:mips': {
+      'CPPDEFINES':   ['V8_TARGET_ARCH_MIPS'],
+      'simulator:none': {
+        'CCFLAGS':      ['-EL', '-mips32r2', '-Wa,-mips32r2', '-fno-inline'],
+        'LDFLAGS':      ['-EL']
+      }
+    },
+    'simulator:mips': {
+      'CCFLAGS':      ['-m32'],
+      'LINKFLAGS':    ['-m32']
+    },
     'arch:x64': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_X64'],
       'CCFLAGS':      ['-m64'],
       'LINKFLAGS':    ['-m64'],
     },
     'prof:oprofile': {
       'CPPDEFINES':   ['ENABLE_OPROFILE_AGENT']
     }
   },
   'msvc': {
@@ skipping 82 matching lines @@
     'library:shared': {
       'CPPDEFINES': ['BUILDING_V8_SHARED'],
       'LIBS': ['winmm', 'ws2_32']
     },
     'arch:arm': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_ARM'],
       # /wd4996 is to silence the warning about sscanf
       # used by the arm simulator.
       'WARNINGFLAGS': ['/wd4996']
     },
+    'arch:mips': {
+      'CPPDEFINES':   ['V8_TARGET_ARCH_MIPS'],
+    },
     'disassembler:on': {
       'CPPDEFINES':   ['ENABLE_DISASSEMBLER']
     }
   }
 }
 
 
 MKSNAPSHOT_EXTRA_FLAGS = {
   'gcc': {
     'os:linux': {
@@ skipping 145 matching lines @@
       }
     },
     'arch:ia32': {
       'CCFLAGS':      ['-m32'],
       'LINKFLAGS':    ['-m32']
     },
     'arch:x64': {
       'CCFLAGS':      ['-m64'],
       'LINKFLAGS':    ['-m64']
     },
+    'arch:mips': {
+      'CPPDEFINES':   ['V8_TARGET_ARCH_MIPS'],
+      'simulator:none': {
+        'CCFLAGS':      ['-EL', '-mips32r2', '-Wa,-mips32r2', '-fno-inline'],
+        'LINKFLAGS':    ['-EL'],
+        'LDFLAGS':      ['-EL']
+      }
+    },
     'simulator:arm': {
       'CCFLAGS':      ['-m32'],
       'LINKFLAGS':    ['-m32']
     },
+    'simulator:mips': {
+      'CCFLAGS':      ['-m32'],
+      'LINKFLAGS':    ['-m32']
+    },
     'mode:release': {
       'CCFLAGS':      ['-O2']
     },
     'mode:debug': {
       'CCFLAGS':      ['-g', '-O0']
     },
     'prof:oprofile': {
       'LIBPATH': ['/usr/lib32', '/usr/lib32/oprofile'],
       'LIBS': ['opagent']
     }
@@ skipping 120 matching lines @@
     'values': ['gcc', 'msvc'],
     'default': TOOLCHAIN_GUESS,
     'help': 'the toolchain to use (' + TOOLCHAIN_GUESS + ')'
   },
   'os': {
     'values': ['freebsd', 'linux', 'macos', 'win32', 'android', 'openbsd', 'solaris'],
     'default': OS_GUESS,
     'help': 'the os to build for (' + OS_GUESS + ')'
   },
   'arch': {
-    'values':['arm', 'ia32', 'x64'],
+    'values':['arm', 'ia32', 'x64', 'mips'],
     'default': ARCH_GUESS,
     'help': 'the architecture to build for (' + ARCH_GUESS + ')'
   },
   'regexp': {
     'values': ['native', 'interpreted'],
     'default': 'native',
     'help': 'Whether to use native or interpreted regexp implementation'
   },
   'snapshot': {
     'values': ['on', 'off', 'nobuild'],
@@ skipping 29 matching lines @@
     'values': ['static', 'shared'],
     'default': 'static',
     'help': 'the type of Microsoft Visual C++ runtime library to use'
   },
   'msvcltcg': {
     'values': ['on', 'off'],
     'default': 'on',
     'help': 'use Microsoft Visual C++ link-time code generation'
   },
   'simulator': {
-    'values': ['arm', 'none'],
+    'values': ['arm', 'mips', 'none'],
     'default': 'none',
     'help': 'build with simulator'
   },
   'disassembler': {
     'values': ['on', 'off'],
     'default': 'off',
     'help': 'enable the disassembler to inspect generated code'
   },
   'sourcesignatures': {
     'values': ['MD5', 'timestamp'],
@@ skipping 199 matching lines @@
       print "Warning: forcing architecture to match simulator (%s)" % options['simulator']
     options['arch'] = options['simulator']
   if (options['prof'] != 'off') and (options['profilingsupport'] == 'off'):
     # Print a warning if profiling is enabled without profiling support
     print "Warning: forcing profilingsupport on when prof is on"
     options['profilingsupport'] = 'on'
   if (options['armvariant'] == 'none' and options['arch'] == 'arm'):
     options['armvariant'] = 'arm'
   if (options['armvariant'] != 'none' and options['arch'] != 'arm'):
     options['armvariant'] = 'none'
+  if options['arch'] == 'mips':
+    if ('regexp' in ARGUMENTS) and options['regexp'] == 'native':
+      # Print a warning if native regexp is specified for mips
+      print "Warning: forcing regexp to interpreted for mips"
+    options['regexp'] = 'interpreted'
 
 
 def ParseEnvOverrides(arg, imports):
   # The environment overrides are in the format NAME0:value0,NAME1:value1,...
   # The environment imports are in the format NAME0,NAME1,...
   overrides = {}
   for var in imports.split(','):
     if var in os.environ:
       overrides[var] = os.environ[var]
   for override in arg.split(','):
@@ skipping 150 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()