gcc/config/sparc/sol2.h

   1 /* Definitions of target machine for GCC, for SPARC running Solaris 2
   2    Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Ron Guilmette (rfg@netcom.com).
   5    Additional changes by David V. Henkel-Wallace (gumby@cygnus.com).
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24 /* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
  25
  26 /* This is here rather than in sparc.h because it's not known what
  27    other assemblers will accept.  */
  28
  29 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
  30 #undef ASM_CPU_DEFAULT_SPEC
  31 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plus"
  32 #endif
  33
  34 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  35 #undef ASM_CPU_DEFAULT_SPEC
  36 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusa"
  37 #endif
  38
  39 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
  40 #undef ASM_CPU_DEFAULT_SPEC
  41 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusb"
  42 #endif
  43
  44 #undef ASM_CPU_SPEC
  45 #define ASM_CPU_SPEC "\
  46 %{mcpu=v9:-xarch=v8plus} \
  47 %{mcpu=ultrasparc:-xarch=v8plusa} \
  48 %{mcpu=ultrasparc3:-xarch=v8plusb} \
  49 %{!mcpu*:%(asm_cpu_default)} \
  50 "
  51
  52 #undef SUBTARGET_EXTRA_SPECS
  53 #define SUBTARGET_EXTRA_SPECS \
  54   { "startfile_arch",   STARTFILE_ARCH_SPEC },  \
  55   { "link_arch",        LINK_ARCH_SPEC }
  56
  57 /* However it appears that Solaris 2.0 uses the same reg numbering as
  58    the old BSD-style system did.  */
  59
  60 /* Same as sparc.h */
  61 #undef DBX_REGISTER_NUMBER
  62 #define DBX_REGISTER_NUMBER(REGNO) \
  63   (TARGET_FLAT && (REGNO) == HARD_FRAME_POINTER_REGNUM ? 31 : REGNO)
  64
  65 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
  66 #undef ASM_OUTPUT_SKIP
  67 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  68   fprintf (FILE, "\t.skip %u\n", (int)(SIZE))
  69
  70 #undef  LOCAL_LABEL_PREFIX
  71 #define LOCAL_LABEL_PREFIX  "."
  72
  73 /* This is how to output a reference to an internal numbered label where
  74    PREFIX is the class of label and NUM is the number within the class.  */
  75
  76 #undef  ASM_OUTPUT_INTERNAL_LABELREF
  77 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
  78   fprintf (FILE, ".L%s%d", PREFIX, NUM)
  79
  80 /* This is how to store into the string LABEL
  81    the symbol_ref name of an internal numbered label where
  82    PREFIX is the class of label and NUM is the number within the class.
  83    This is suitable for output with `assemble_name'.  */
  84
  85 #undef  ASM_GENERATE_INTERNAL_LABEL
  86 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  87   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  88
  89 /* The native TLS-enabled assembler requires the directive #tls_object
  90    to be put on objects in TLS sections (as of v7.1).  This is not
  91    required by the GNU assembler but supported on SPARC.  */
  92 #undef  ASM_DECLARE_OBJECT_NAME
  93 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
  94   do                                                            \
  95     {                                                           \
  96       HOST_WIDE_INT size;                                       \
  97                                                                 \
  98       if (DECL_THREAD_LOCAL (DECL))                             \
  99         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
 100       else                                                      \
 101         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
 102                                                                 \
 103       size_directive_output = 0;                                \
 104       if (!flag_inhibit_size_directive                          \
 105           && (DECL) && DECL_SIZE (DECL))                        \
 106         {                                                       \
 107           size_directive_output = 1;                            \
 108           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 109           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 110         }                                                       \
 111                                                                 \
 112       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 113     }                                                           \
 114   while (0)
 115
 116 \f
 117
 118 #undef  ENDFILE_SPEC
 119 #define ENDFILE_SPEC \
 120   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 121    crtend.o%s crtn.o%s"
 122
 123 /* Select a format to encode pointers in exception handling data.  CODE
 124    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
 125    true if the symbol may be affected by dynamic relocations.
 126
 127    Some Solaris dynamic linkers don't handle unaligned section relative
 128    relocs properly, so force them to be aligned.  */
 129 #ifndef HAVE_AS_SPARC_UA_PCREL
 130 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
 131   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
 132 #endif
 133
 134 /* The Solaris linker doesn't understand constructor priorities.  */
 135 #undef SUPPORTS_INIT_PRIORITY
 136 #define SUPPORTS_INIT_PRIORITY 0
 137 \f
 138 /* ??? This does not work in SunOS 4.x, so it is not enabled in sparc.h.
 139    Instead, it is enabled here, because it does work under Solaris.  */
 140 /* Define for support of TFmode long double.
 141    SPARC ABI says that long double is 4 words.  */
 142 #define LONG_DOUBLE_TYPE_SIZE 128
 143
 144 /* But indicate that it isn't supported by the hardware.  */
 145 #define WIDEST_HARDWARE_FP_SIZE 64
 146
 147 /* Solaris's _Qp_* library routine implementation clobbers the output
 148    memory before the inputs are fully consumed.  */
 149
 150 #undef TARGET_BUGGY_QP_LIB
 151 #define TARGET_BUGGY_QP_LIB     1
 152
 153 #undef SOLARIS_CONVERSION_LIBFUNCS
 154 #define SOLARIS_CONVERSION_LIBFUNCS 1
 155
 156 #undef SUN_INTEGER_MULTIPLY_64
 157 #define SUN_INTEGER_MULTIPLY_64 1
 158
 159 /* Solaris allows 64 bit out and global registers in 32 bit mode.
 160    sparc_override_options will disable V8+ if not generating V9 code.  */
 161 #undef TARGET_DEFAULT
 162 #define TARGET_DEFAULT (MASK_V8PLUS + MASK_FPU + MASK_LONG_DOUBLE_128)