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    2006 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, 51 Franklin Street, Fifth Floor,
  22 Boston, MA 02110-1301, 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 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara
  45 #undef ASM_CPU_DEFAULT_SPEC
  46 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusb"
  47 #endif
  48
  49 #undef ASM_CPU_SPEC
  50 #define ASM_CPU_SPEC "\
  51 %{mcpu=v9:-xarch=v8plus} \
  52 %{mcpu=ultrasparc:-xarch=v8plusa} \
  53 %{mcpu=ultrasparc3:-xarch=v8plusb} \
  54 %{mcpu=niagara:-xarch=v8plusb} \
  55 %{!mcpu*:%(asm_cpu_default)} \
  56 "
  57
  58 #undef SUBTARGET_EXTRA_SPECS
  59 #define SUBTARGET_EXTRA_SPECS \
  60   { "startfile_arch",   STARTFILE_ARCH_SPEC },  \
  61   { "link_arch",        LINK_ARCH_SPEC }
  62
  63 /* However it appears that Solaris 2.0 uses the same reg numbering as
  64    the old BSD-style system did.  */
  65
  66 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
  67 #undef ASM_OUTPUT_SKIP
  68 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  69   fprintf (FILE, "\t.skip %u\n", (int)(SIZE))
  70
  71 #undef  LOCAL_LABEL_PREFIX
  72 #define LOCAL_LABEL_PREFIX  "."
  73
  74 /* This is how to store into the string LABEL
  75    the symbol_ref name of an internal numbered label where
  76    PREFIX is the class of label and NUM is the number within the class.
  77    This is suitable for output with `assemble_name'.  */
  78
  79 #undef  ASM_GENERATE_INTERNAL_LABEL
  80 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  81   sprintf ((LABEL), "*.L%s%lu", (PREFIX), (unsigned long)(NUM))
  82
  83 /* The native TLS-enabled assembler requires the directive #tls_object
  84    to be put on objects in TLS sections (as of v7.1).  This is not
  85    required by the GNU assembler but supported on SPARC.  */
  86 #undef  ASM_DECLARE_OBJECT_NAME
  87 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
  88   do                                                            \
  89     {                                                           \
  90       HOST_WIDE_INT size;                                       \
  91                                                                 \
  92       if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))       \
  93         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_object");   \
  94       else                                                      \
  95         ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");       \
  96                                                                 \
  97       size_directive_output = 0;                                \
  98       if (!flag_inhibit_size_directive                          \
  99           && (DECL) && DECL_SIZE (DECL))                        \
 100         {                                                       \
 101           size_directive_output = 1;                            \
 102           size = int_size_in_bytes (TREE_TYPE (DECL));          \
 103           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
 104         }                                                       \
 105                                                                 \
 106       ASM_OUTPUT_LABEL (FILE, NAME);                            \
 107     }                                                           \
 108   while (0)
 109
 110 /* The Solaris assembler cannot grok .stabd directives.  */
 111 #undef NO_DBX_BNSYM_ENSYM
 112 #define NO_DBX_BNSYM_ENSYM 1
 113 \f
 114
 115 #undef  ENDFILE_SPEC
 116 #define ENDFILE_SPEC \
 117   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 118    crtend.o%s crtn.o%s"
 119
 120 /* Select a format to encode pointers in exception handling data.  CODE
 121    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
 122    true if the symbol may be affected by dynamic relocations.
 123
 124    Some Solaris dynamic linkers don't handle unaligned section relative
 125    relocs properly, so force them to be aligned.  */
 126 #ifndef HAVE_AS_SPARC_UA_PCREL
 127 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
 128   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
 129 #endif
 130
 131 \f
 132 /* Define for support of TFmode long double.
 133    SPARC ABI says that long double is 4 words.  */
 134 #define LONG_DOUBLE_TYPE_SIZE 128
 135
 136 /* But indicate that it isn't supported by the hardware.  */
 137 #define WIDEST_HARDWARE_FP_SIZE 64
 138
 139 /* Solaris's _Qp_* library routine implementation clobbers the output
 140    memory before the inputs are fully consumed.  */
 141
 142 #undef TARGET_BUGGY_QP_LIB
 143 #define TARGET_BUGGY_QP_LIB     1
 144
 145 #undef SUN_CONVERSION_LIBFUNCS
 146 #define SUN_CONVERSION_LIBFUNCS 1
 147
 148 #undef DITF_CONVERSION_LIBFUNCS
 149 #define DITF_CONVERSION_LIBFUNCS 1
 150
 151 #undef SUN_INTEGER_MULTIPLY_64
 152 #define SUN_INTEGER_MULTIPLY_64 1
 153
 154 /* Solaris allows 64 bit out and global registers in 32 bit mode.
 155    sparc_override_options will disable V8+ if not generating V9 code.  */
 156 #undef TARGET_DEFAULT
 157 #define TARGET_DEFAULT (MASK_V8PLUS + MASK_APP_REGS + MASK_FPU \
 158                         + MASK_LONG_DOUBLE_128)
 159
 160 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 161    the bits from config/sol2.c.  */
 162 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 163 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 164
 165 /* Output a simple call for .init/.fini.  */
 166 #define ASM_OUTPUT_CALL(FILE, FN)                               \
 167   do                                                            \
 168     {                                                           \
 169       fprintf (FILE, "\tcall\t");                               \
 170       print_operand (FILE, XEXP (DECL_RTL (FN), 0), 0); \
 171       fprintf (FILE, "\n\tnop\n");                              \
 172     }                                                           \
 173   while (0)