gcc/config/pa/pa32-linux.h

   1 /* Definitions for PA_RISC with ELF-32 format
   2    Copyright (C) 2000, 2002, 2004, 2006, 2007, 2010, 2011
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* Turn off various SOM crap we don't want.  */
  22 #undef TARGET_ELF32
  23 #define TARGET_ELF32 1
  24
  25 /* The libcall __canonicalize_funcptr_for_compare is referenced in
  26    crtend.o and the reference isn't resolved in objects that don't
  27    compare function pointers.  Thus, we need to play games to provide
  28    a reference in crtbegin.o.  The rest of the define is the same
  29    as that in crtstuff.c  */
  30 #define CTOR_LIST_BEGIN \
  31   asm (".type __canonicalize_funcptr_for_compare,@function\n"           \
  32 "       .text\n"                                                        \
  33 "       .word __canonicalize_funcptr_for_compare-$PIC_pcrel$0");        \
  34   STATIC func_ptr __CTOR_LIST__[1]                                      \
  35     __attribute__ ((__used__, section(".ctors"),                        \
  36                     aligned(sizeof(func_ptr))))                         \
  37     = { (func_ptr) (-1) }
  38
  39 /* This is a PIC version of CRT_CALL_STATIC_FUNCTION.  The PIC
  40    register has to be saved before the call and restored after
  41    the call.  We assume that register %r4 is available for this
  42    purpose.  The hack prevents GCC from deleting the restore.  */
  43 #ifdef CRTSTUFFS_O
  44 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)      \
  45 static void __attribute__((__used__))                   \
  46 call_ ## FUNC (void)                                    \
  47 {                                                       \
  48   asm (SECTION_OP);                                     \
  49   asm volatile ("bl " #FUNC ",%%r2\n\t"                 \
  50                 "copy %%r19,%%r4\n\t"                   \
  51                 "copy %%r4,%%r19\n"                     \
  52                 :                                       \
  53                 :                                       \
  54                 : "r1", "r2", "r4", "r20", "r21",       \
  55                   "r22", "r23", "r24", "r25", "r26",    \
  56                   "r27", "r28", "r29", "r31");          \
  57   asm (TEXT_SECTION_ASM_OP);                            \
  58 }
  59 #endif
  60
  61 #undef  WCHAR_TYPE
  62 #define WCHAR_TYPE "long int"
  63
  64 #undef  WCHAR_TYPE_SIZE
  65 #define WCHAR_TYPE_SIZE BITS_PER_WORD