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, 2005
   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 store into the string LABEL
  69    the symbol_ref name of an internal numbered label where
  70    PREFIX is the class of label and NUM is the number within the class.
  71    This is suitable for output with `assemble_name'.  */
  72
  73 #undef  ASM_GENERATE_INTERNAL_LABEL
  74 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  75   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  76
  77 /* The native TLS-enabled assembler requires the directive #tls_object
  78    to be put on objects in TLS sections (as of v7.1).  This is not
  79    required by the GNU assembler but supported on SPARC.  */
  80 #undef  ASM_DECLARE_OBJECT_NAME
  81 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
  82   do                                                            \
  83     {                                                           \
  84       HOST_WIDE_INT size;                                       \
  85                                                                 \
  86       if (DECL_THREAD_LOCAL (DECL))                             \
  87         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
  88       else                                                      \
  89         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
  90                                                                 \
  91       size_directive_output = 0;                                \
  92       if (!flag_inhibit_size_directive                          \
  93           && (DECL) && DECL_SIZE (DECL))                        \
  94         {                                                       \
  95           size_directive_output = 1;                            \
  96           size = int_size_in_bytes (TREE_TYPE (DECL));          \
  97           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
  98         }                                                       \
  99                                                                 \
 100       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 101     }                                                           \
 102   while (0)
 103
 104 /* The Solaris assembler cannot grok .stabd directives.  */
 105 #undef NO_DBX_BNSYM_ENSYM
 106 #define NO_DBX_BNSYM_ENSYM 1
 107 \f
 108
 109 #undef  ENDFILE_SPEC
 110 #define ENDFILE_SPEC \
 111   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 112    crtend.o%s crtn.o%s"
 113
 114 /* Select a format to encode pointers in exception handling data.  CODE
 115    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
 116    true if the symbol may be affected by dynamic relocations.
 117
 118    Some Solaris dynamic linkers don't handle unaligned section relative
 119    relocs properly, so force them to be aligned.  */
 120 #ifndef HAVE_AS_SPARC_UA_PCREL
 121 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
 122   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
 123 #endif
 124
 125 \f
 126 /* Define for support of TFmode long double.
 127    SPARC ABI says that long double is 4 words.  */
 128 #define LONG_DOUBLE_TYPE_SIZE 128
 129
 130 /* But indicate that it isn't supported by the hardware.  */
 131 #define WIDEST_HARDWARE_FP_SIZE 64
 132
 133 /* Solaris's _Qp_* library routine implementation clobbers the output
 134    memory before the inputs are fully consumed.  */
 135
 136 #undef TARGET_BUGGY_QP_LIB
 137 #define TARGET_BUGGY_QP_LIB     1
 138
 139 #undef SUN_CONVERSION_LIBFUNCS
 140 #define SUN_CONVERSION_LIBFUNCS 1
 141
 142 #undef DITF_CONVERSION_LIBFUNCS
 143 #define DITF_CONVERSION_LIBFUNCS 1
 144
 145 #undef SUN_INTEGER_MULTIPLY_64
 146 #define SUN_INTEGER_MULTIPLY_64 1
 147
 148 /* Solaris allows 64 bit out and global registers in 32 bit mode.
 149    sparc_override_options will disable V8+ if not generating V9 code.  */
 150 #undef TARGET_DEFAULT
 151 #define TARGET_DEFAULT (MASK_V8PLUS + MASK_FPU + MASK_LONG_DOUBLE_128)
 152
 153 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 154    the bits from config/sol2.c.  */
 155 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 156 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 157
 158 /* Output a simple call for .init/.fini.  */
 159 #define ASM_OUTPUT_CALL(FILE, FN)                               \
 160   do                                                            \
 161     {                                                           \
 162       fprintf (FILE, "\tcall\t");                               \
 163       print_operand (FILE, XEXP (DECL_RTL (FN), 0), 0); \
 164       fprintf (FILE, "\n\tnop\n");                              \
 165     }                                                           \
 166   while (0)