gcc/config/mips/sde.h

   1 /* Definitions of target machine for GNU compiler.
   2    MIPS SDE version.
   3    Copyright (C) 2003, 2004
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #define DRIVER_SELF_SPECS                                               \
  24   /* Make sure a -mips option is present.  This helps us to pick        \
  25      the right multilib, and also makes the later specs easier          \
  26      to write.  */                                                      \
  27   MIPS_ISA_LEVEL_SPEC,                                                  \
  28                                                                         \
  29   /* Infer the default float setting from -march.  */                   \
  30   MIPS_ARCH_FLOAT_SPEC,                                                 \
  31                                                                         \
  32   /* If no ABI option is specified, infer one from the ISA level        \
  33      or -mgp setting.  */                                               \
  34   "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}",    \
  35                                                                         \
  36   /* Remove a redundant -mfp64 for -mabi=n32; we want the !mfp64        \
  37      multilibs.  There's no need to check whether the architecture      \
  38      is 64-bit; cc1 will complain if it isn't.  */                      \
  39   "%{mabi=n32: %<mfp64}",                                               \
  40                                                                         \
  41   /* Make sure that an endian option is always present.  This makes     \
  42      things like LINK_SPEC easier to write.  */                         \
  43   "%{!EB:%{!EL:%(endian_spec)}}",                                       \
  44                                                                         \
  45   /* -mcode-xonly is a traditional alias for -mcode-readable=pcrel and  \
  46      -mno-data-in-code is a traditional alias for -mcode-readable=no.   \
  47      The latter trumps the former.  */                                  \
  48   "%{mno-data-in-code: -mcode-readable=no}",                            \
  49   "%{!mcode-readable=no: %{mcode-xonly: -mcode-readable=pcrel}}",       \
  50   "%<mno-data-in-code %<mcode-xonly"
  51
  52 /* Use trap rather than break for all but MIPS I ISA.  Force -no-mips16,
  53    so that MIPS16 assembler code requires an explicit ".set mips16".
  54    Very little hand-written MIPS16 assembler exists, and some build
  55    systems expect code to be assembled as non-MIPS16 even if the
  56    prevailing compiler flags select -mips16.  */
  57 #undef SUBTARGET_ASM_SPEC
  58 #define SUBTARGET_ASM_SPEC "\
  59 %{!mips1:--trap} \
  60 %{fPIC|fpic|fPIE|fpie:%{!mips16*:-KPIC}} \
  61 %{mips16:-no-mips16}"
  62
  63 #undef LINK_SPEC
  64 #define LINK_SPEC "\
  65 %(endian_spec) \
  66 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
  67 %{bestGnum} \
  68 %{shared} %{non_shared} %{call_shared} \
  69 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \
  70 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \
  71 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}"
  72
  73 #undef DEFAULT_SIGNED_CHAR
  74 #define DEFAULT_SIGNED_CHAR 0
  75
  76 /* SDE-MIPS won't ever support SDB or MIPS debugging info.  */
  77 #undef SDB_DEBUGGING_INFO
  78 #undef MIPS_DEBUGGING_INFO
  79
  80 /* Describe how we implement __builtin_eh_return.  */
  81
  82 /* At the moment, nothing appears to use more than 2 EH data registers.
  83    The chosen registers must not clash with the return register ($2),
  84    EH_RETURN_STACKADJ ($3), or MIPS_EPILOGUE_TEMP ($5), and they must
  85    be general MIPS16 registers.  Pick $6 and $7.  */
  86 #undef EH_RETURN_DATA_REGNO
  87 #define EH_RETURN_DATA_REGNO(N) \
  88   ((N) < 2 ? 7 - (N) : INVALID_REGNUM)
  89
  90 /* Use $5 as a temporary for both MIPS16 and non-MIPS16.  */
  91 #undef MIPS_EPILOGUE_TEMP_REGNUM
  92 #define MIPS_EPILOGUE_TEMP_REGNUM (GP_REG_FIRST + 5)
  93
  94 /* Using long will always be right for size_t and ptrdiff_t, since
  95    sizeof(long) must equal sizeof(void *), following from the setting
  96    of the -mlong64 option.  */
  97 #undef SIZE_TYPE
  98 #define SIZE_TYPE "long unsigned int"
  99 #undef PTRDIFF_TYPE
 100 #define PTRDIFF_TYPE "long int"
 101
 102 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
 103 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
 104
 105 /* Use standard ELF-style local labels (not '$' as on early Irix).  */
 106 #undef LOCAL_LABEL_PREFIX
 107 #define LOCAL_LABEL_PREFIX "."
 108
 109 /* Use periods rather than dollar signs in special g++ assembler names.  */
 110 #define NO_DOLLAR_IN_LABEL
 111
 112 /* Attach a special .ident directive to the end of the file to identify
 113    the version of GCC which compiled this code.  */
 114 #undef IDENT_ASM_OP
 115 #define IDENT_ASM_OP "\t.ident\t"
 116
 117 /* Output #ident string into the ELF .comment section, so it doesn't
 118    form part of the load image, and so that it can be stripped.  */
 119 #undef ASM_OUTPUT_IDENT
 120 #define ASM_OUTPUT_IDENT(STREAM, STRING) \
 121   fprintf (STREAM, "%s\"%s\"\n", IDENT_ASM_OP, STRING);
 122
 123 /* Currently we don't support 128bit long doubles, so for now we force
 124    n32 to be 64bit.  */
 125 #undef LONG_DOUBLE_TYPE_SIZE
 126 #define LONG_DOUBLE_TYPE_SIZE 64
 127
 128 #ifdef IN_LIBGCC2
 129 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 130 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 131 #endif
 132
 133 /* Force all .init and .fini entries to be 32-bit, not mips16, so that
 134    in a mixed environment they are all the same mode. The crti.asm and
 135    crtn.asm files will also be compiled as 32-bit due to the
 136    -no-mips16 flag in SUBTARGET_ASM_SPEC above. */
 137 #undef CRT_CALL_STATIC_FUNCTION
 138 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
 139    asm (SECTION_OP "\n\
 140         .set push\n\
 141         .set nomips16\n\
 142         jal " USER_LABEL_PREFIX #FUNC "\n\
 143         .set pop\n\
 144         " TEXT_SECTION_ASM_OP);