[gcc] Introduce TARGET_NACL;

gcc/gcc/config/i386/nacl.h

 /* Target definitions for GCC for NativeClient using ELF
    Copyright (C) 1988, 1991, 1995, 2000, 2001, 2002
    Free Software Foundation, Inc.
 
    Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com).
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.
 
 GCC is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
+#define TARGET_NACL (flag_control_integrity)
+
 /* These definitions modify those in i386elf.h. */
 
 #undef TARGET_VERSION
 #define TARGET_VERSION fprintf (stderr, " (NativeClient)");
 
 /* Provide a STARTFILE_SPEC.  Here we add
    the GNU/Linux magical crtbegin.o file (see crtstuff.c) which provides part of
    the support for getting C++ file-scope static object constructed before
    entering `main'.  */
    
@@ skipping 228 matching lines @@
 /*xmm0,xmm1,xmm2,xmm3,xmm4,xmm5,xmm6,xmm7*/                     \
      1,   1,   1,   1,   1,   1,   1,   1,                      \
 /* mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7*/                     \
      1,   1,   1,   1,   1,   1,   1,   1,                      \
 /*  r8,  r9, r10, r11, r12, r13, r14, r15*/                     \
      1,   1,   1,   1,   2,   2,   2,   1,                      \
 /*xmm8,xmm9,xmm10,xmm11,xmm12,xmm13,xmm14,xmm15*/               \
      1,   1,    1,    1,    1,    1,    1,    1 }
 /* Leave is forbidden in NaCl mode */
 #undef TARGET_USE_LEAVE
-#define TARGET_USE_LEAVE        (ix86_tune_features[X86_TUNE_USE_LEAVE] && !flag_control_integrity)
+#define TARGET_USE_LEAVE        (ix86_tune_features[X86_TUNE_USE_LEAVE] && !TARGET_NACL)
 #undef TARGET_USE_BT
-#define TARGET_USE_BT           (ix86_tune_features[X86_TUNE_USE_BT] && !flag_control_integrity)
+#define TARGET_USE_BT           (ix86_tune_features[X86_TUNE_USE_BT] && !TARGET_NACL)
 
 #undef DBX_REGISTER_NUMBER
 #define DBX_REGISTER_NUMBER(n) \
   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
 
 #define DWARF2_ADDR_SIZE \
-    (flag_control_integrity ? (TARGET_64BIT ? 8 : 4) : \
-                              (POINTER_SIZE / BITS_PER_UNIT))
+    (TARGET_NACL ? (TARGET_64BIT ? 8 : 4) : \
+                   (POINTER_SIZE / BITS_PER_UNIT))