gcc/config/sparc/sp64-elf.h

   1 /* Definitions of target machine for GCC, for SPARC64, ELF.
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2004, 2005
   3    Free Software Foundation, Inc.
   4    Contributed by Doug Evans, dje@cygnus.com.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #undef TARGET_VERSION
  24 #define TARGET_VERSION fprintf (stderr, " (sparc64-elf)")
  25
  26 /* A 64 bit v9 compiler in a Medium/Anywhere code model environment.  */
  27 #undef TARGET_DEFAULT
  28 #define TARGET_DEFAULT \
  29 (MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_HARD_QUAD \
  30  + MASK_APP_REGS + MASK_FPU + MASK_STACK_BIAS + MASK_LONG_DOUBLE_128)
  31
  32 #undef SPARC_DEFAULT_CMODEL
  33 #define SPARC_DEFAULT_CMODEL CM_EMBMEDANY
  34
  35 /* Don't assume anything about the header files.  */
  36 #define NO_IMPLICIT_EXTERN_C
  37
  38 /* __svr4__ is used by the C library (FIXME) */
  39 #undef CPP_SUBTARGET_SPEC
  40 #define CPP_SUBTARGET_SPEC "-D__svr4__"
  41
  42 #undef MD_EXEC_PREFIX
  43 #undef MD_STARTFILE_PREFIX
  44
  45 #undef ASM_SPEC
  46 #define ASM_SPEC "\
  47 %{v:-V} -s %{fpic|fPIC|fpie|fPIE:-K PIC} \
  48 %{mlittle-endian:-EL} \
  49 %(asm_cpu) %(asm_arch) \
  50 "
  51
  52 /* This is taken from sol2.h.  */
  53 #undef LINK_SPEC
  54 #define LINK_SPEC "\
  55 %{v:-V} \
  56 %{mlittle-endian:-EL} \
  57 "
  58
  59 /* We need something a little simpler for the embedded environment.
  60    Profiling doesn't really work yet so we just copy the default.  */
  61 #undef STARTFILE_SPEC
  62 #define STARTFILE_SPEC "\
  63 %{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}} \
  64 crtbegin.o%s \
  65 "
  66
  67 #undef ENDFILE_SPEC
  68 #define ENDFILE_SPEC \
  69   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
  70    crtend.o%s"
  71
  72 /* Use the default (for now).  */
  73 #undef LIB_SPEC
  74
  75 /* This defines which switch letters take arguments.
  76    It is as in svr4.h but with -R added.  */
  77 #undef SWITCH_TAKES_ARG
  78 #define SWITCH_TAKES_ARG(CHAR) \
  79   (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
  80    || (CHAR) == 'R' \
  81    || (CHAR) == 'h' \
  82    || (CHAR) == 'z')
  83
  84 /* V9 chips can handle either endianness.  */
  85 #undef SUBTARGET_SWITCHES
  86 #define SUBTARGET_SWITCHES \
  87 {"big-endian", -MASK_LITTLE_ENDIAN, N_("Generate code for big endian") }, \
  88 {"little-endian", MASK_LITTLE_ENDIAN, N_("Generate code for little endian") },
  89
  90 #undef BYTES_BIG_ENDIAN
  91 #define BYTES_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
  92
  93 #undef WORDS_BIG_ENDIAN
  94 #define WORDS_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
  95 \f
  96 #undef  LOCAL_LABEL_PREFIX
  97 #define LOCAL_LABEL_PREFIX  "."
  98
  99 /* This is how to store into the string LABEL
 100    the symbol_ref name of an internal numbered label where
 101    PREFIX is the class of label and NUM is the number within the class.
 102    This is suitable for output with `assemble_name'.  */
 103
 104 #undef  ASM_GENERATE_INTERNAL_LABEL
 105 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 106   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
 107 \f
 108 /* ??? This should be 32 bits for v9 but what can we do?  */
 109 #undef WCHAR_TYPE
 110 #define WCHAR_TYPE "short unsigned int"
 111
 112 #undef WCHAR_TYPE_SIZE
 113 #define WCHAR_TYPE_SIZE 16
 114
 115 #undef LONG_DOUBLE_TYPE_SIZE
 116 #define LONG_DOUBLE_TYPE_SIZE 128
 117
 118 /* The medium/anywhere code model practically requires us to put jump tables
 119    in the text section as gcc is unable to distinguish LABEL_REF's of jump
 120    tables from other label refs (when we need to).  */
 121 /* But we now defer the tables to the end of the function, so we make
 122    this 0 to not confuse the branch shortening code.  */
 123 #undef JUMP_TABLES_IN_TEXT_SECTION
 124 #define JUMP_TABLES_IN_TEXT_SECTION 0