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 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
  61 #undef ASM_OUTPUT_SKIP
  62 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  63   fprintf (FILE, "\t.skip %u\n", (int)(SIZE))
  64
  65 #undef  LOCAL_LABEL_PREFIX
  66 #define LOCAL_LABEL_PREFIX  "."
  67
  68 /* This is how to output a reference to an internal numbered label where
  69    PREFIX is the class of label and NUM is the number within the class.  */
  70
  71 #undef  ASM_OUTPUT_INTERNAL_LABELREF
  72 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
  73   fprintf (FILE, ".L%s%d", PREFIX, NUM)
  74
  75 /* This is how to store into the string LABEL
  76    the symbol_ref name of an internal numbered label where
  77    PREFIX is the class of label and NUM is the number within the class.
  78    This is suitable for output with `assemble_name'.  */
  79
  80 #undef  ASM_GENERATE_INTERNAL_LABEL
  81 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  82   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  83
  84 /* The native TLS-enabled assembler requires the directive #tls_object
  85    to be put on objects in TLS sections (as of v7.1).  This is not
  86    required by the GNU assembler but supported on SPARC.  */
  87 #undef  ASM_DECLARE_OBJECT_NAME
  88 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
  89   do                                                            \
  90     {                                                           \
  91       HOST_WIDE_INT size;                                       \
  92                                                                 \
  93       if (DECL_THREAD_LOCAL (DECL))                             \
  94         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
  95       else                                                      \
  96         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
  97                                                                 \
  98       size_directive_output = 0;                                \
  99       if (!flag_inhibit_size_directive                          \
 100           && (DECL) && DECL_SIZE (DECL))                        \
 101         {                                                       \
 102           size_directive_output = 1;                            \
 103           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 104           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 105         }                                                       \
 106                                                                 \
 107       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 108     }                                                           \
 109   while (0)
 110
 111 \f
 112
 113 #undef  ENDFILE_SPEC
 114 #define ENDFILE_SPEC \
 115   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 116    crtend.o%s crtn.o%s"
 117
 118 /* Select a format to encode pointers in exception handling data.  CODE
 119    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
 120    true if the symbol may be affected by dynamic relocations.
 121
 122    Some Solaris dynamic linkers don't handle unaligned section relative
 123    relocs properly, so force them to be aligned.  */
 124 #ifndef HAVE_AS_SPARC_UA_PCREL
 125 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
 126   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
 127 #endif
 128
 129 /* The Solaris linker doesn't understand constructor priorities.  */
 130 #undef SUPPORTS_INIT_PRIORITY
 131 #define SUPPORTS_INIT_PRIORITY 0
 132 \f
 133 /* Define for support of TFmode long double.
 134    SPARC ABI says that long double is 4 words.  */
 135 #define LONG_DOUBLE_TYPE_SIZE 128
 136
 137 /* But indicate that it isn't supported by the hardware.  */
 138 #define WIDEST_HARDWARE_FP_SIZE 64
 139
 140 /* Solaris's _Qp_* library routine implementation clobbers the output
 141    memory before the inputs are fully consumed.  */
 142
 143 #undef TARGET_BUGGY_QP_LIB
 144 #define TARGET_BUGGY_QP_LIB     1
 145
 146 #undef SUN_CONVERSION_LIBFUNCS
 147 #define SUN_CONVERSION_LIBFUNCS 1
 148
 149 #undef DITF_CONVERSION_LIBFUNCS
 150 #define DITF_CONVERSION_LIBFUNCS 1
 151
 152 #undef SUN_INTEGER_MULTIPLY_64
 153 #define SUN_INTEGER_MULTIPLY_64 1
 154
 155 /* Solaris allows 64 bit out and global registers in 32 bit mode.
 156    sparc_override_options will disable V8+ if not generating V9 code.  */
 157 #undef TARGET_DEFAULT
 158 #define TARGET_DEFAULT (MASK_V8PLUS + MASK_FPU + MASK_LONG_DOUBLE_128)