gcc/config/sparc/sol2.h

   1 /* Definitions of target machine for GNU compiler, for SPARC running Solaris 2
   2    Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
   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 GNU CC.
   8
   9 GNU CC 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 GNU CC 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 GNU CC; 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 #undef CPP_PREDEFINES
  27 #define CPP_PREDEFINES "-Dsparc"
  28
  29 /* This is here rather than in sparc.h because it's not known what
  30    other assemblers will accept.  */
  31
  32 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
  33 #undef ASM_CPU_DEFAULT_SPEC
  34 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plus"
  35 #endif
  36
  37 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  38 #undef ASM_CPU_DEFAULT_SPEC
  39 #define ASM_CPU_DEFAULT_SPEC "-xarch=v8plusa"
  40 #endif
  41
  42 #undef ASM_CPU_SPEC
  43 #define ASM_CPU_SPEC "\
  44 %{mcpu=v8plus:-xarch=v8plus} \
  45 %{mcpu=v9:-xarch=v8plus} \
  46 %{mcpu=ultrasparc:-xarch=v8plusa} \
  47 %{!mcpu*:%(asm_cpu_default)} \
  48 "
  49
  50 #undef SUBTARGET_EXTRA_SPECS
  51 #define SUBTARGET_EXTRA_SPECS \
  52   { "startfile_arch",   STARTFILE_ARCH_SPEC },  \
  53   { "link_arch",        LINK_ARCH_SPEC }
  54
  55 /* However it appears that Solaris 2.0 uses the same reg numbering as
  56    the old BSD-style system did.  */
  57
  58 /* Same as sparc.h */
  59 #undef DBX_REGISTER_NUMBER
  60 #define DBX_REGISTER_NUMBER(REGNO) \
  61   (TARGET_FLAT && (REGNO) == HARD_FRAME_POINTER_REGNUM ? 31 : REGNO)
  62
  63 /* The Solaris 2 assembler uses .skip, not .zero, so put this back.  */
  64 #undef ASM_OUTPUT_SKIP
  65 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  66   fprintf (FILE, "\t.skip %u\n", (SIZE))
  67
  68 #undef  LOCAL_LABEL_PREFIX
  69 #define LOCAL_LABEL_PREFIX  "."
  70
  71 /* This is how to output a definition of an internal numbered label where
  72    PREFIX is the class of label and NUM is the number within the class.  */
  73
  74 #undef  ASM_OUTPUT_INTERNAL_LABEL
  75 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
  76   fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
  77
  78 /* This is how to output a reference to an internal numbered label where
  79    PREFIX is the class of label and NUM is the number within the class.  */
  80
  81 #undef  ASM_OUTPUT_INTERNAL_LABELREF
  82 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
  83   fprintf (FILE, ".L%s%d", PREFIX, NUM)
  84
  85 /* This is how to store into the string LABEL
  86    the symbol_ref name of an internal numbered label where
  87    PREFIX is the class of label and NUM is the number within the class.
  88    This is suitable for output with `assemble_name'.  */
  89
  90 #undef  ASM_GENERATE_INTERNAL_LABEL
  91 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  92   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  93
  94 \f
  95
  96 #undef  ENDFILE_SPEC
  97 #define ENDFILE_SPEC \
  98   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
  99    crtend.o%s crtn.o%s"
 100
 101 /* Select a format to encode pointers in exception handling data.  CODE
 102    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
 103    true if the symbol may be affected by dynamic relocations.
 104
 105    Some Solaris dynamic linkers don't handle unaligned section relative
 106    relocs properly, so force them to be aligned.  */
 107 #ifndef HAVE_AS_SPARC_UA_PCREL
 108 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)               \
 109   ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr)
 110 #endif
 111 \f
 112 /* ??? This does not work in SunOS 4.x, so it is not enabled in sparc.h.
 113    Instead, it is enabled here, because it does work under Solaris.  */
 114 /* Define for support of TFmode long double.
 115    SPARC ABI says that long double is 4 words.  */
 116 #define LONG_DOUBLE_TYPE_SIZE 128
 117
 118 /* But indicate that it isn't supported by the hardware.  */
 119 #define WIDEST_HARDWARE_FP_SIZE 64
 120
 121 #define MULDI3_LIBCALL "__mul64"
 122 #define DIVDI3_LIBCALL "__div64"
 123 #define UDIVDI3_LIBCALL "__udiv64"
 124 #define MODDI3_LIBCALL "__rem64"
 125 #define UMODDI3_LIBCALL "__urem64"
 126
 127 /* Solaris's _Qp_* library routine implementation clobbers the output
 128    memory before the inputs are fully consumed.  */
 129
 130 #undef TARGET_BUGGY_QP_LIB
 131 #define TARGET_BUGGY_QP_LIB     1
 132
 133 #undef INIT_SUBTARGET_OPTABS
 134 #define INIT_SUBTARGET_OPTABS                                           \
 135   fixsfdi_libfunc                                                       \
 136     = init_one_libfunc (TARGET_ARCH64 ? "__ftol" : "__ftoll");          \
 137   fixunssfdi_libfunc                                                    \
 138     = init_one_libfunc (TARGET_ARCH64 ? "__ftoul" : "__ftoull");        \
 139   fixdfdi_libfunc                                                       \
 140     = init_one_libfunc (TARGET_ARCH64 ? "__dtol" : "__dtoll");          \
 141   fixunsdfdi_libfunc                                                    \
 142     = init_one_libfunc (TARGET_ARCH64 ? "__dtoul" : "__dtoull")
 143
 144 /* Solaris allows 64 bit out and global registers in 32 bit mode.
 145    sparc_override_options will disable V8+ if not generating V9 code.  */
 146 #undef TARGET_DEFAULT
 147 #define TARGET_DEFAULT (MASK_V8PLUS + MASK_FPU + MASK_LONG_DOUBLE_128)