gcc/config/mips/sde.h

   1 /* Definitions of target machine for GNU compiler.
   2    MIPS SDE version.
   3    Copyright (C) 2003, 2004, 2007
   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 3, 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 COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #define DRIVER_SELF_SPECS                                               \
  23   /* Make sure a -mips option is present.  This helps us to pick        \
  24      the right multilib, and also makes the later specs easier          \
  25      to write.  */                                                      \
  26   MIPS_ISA_LEVEL_SPEC,                                                  \
  27                                                                         \
  28   /* Infer the default float setting from -march.  */                   \
  29   MIPS_ARCH_FLOAT_SPEC,                                                 \
  30                                                                         \
  31   /* If no ABI option is specified, infer one from the ISA level        \
  32      or -mgp setting.  */                                               \
  33   "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}",    \
  34                                                                         \
  35   /* Remove a redundant -mfp64 for -mabi=n32; we want the !mfp64        \
  36      multilibs.  There's no need to check whether the architecture      \
  37      is 64-bit; cc1 will complain if it isn't.  */                      \
  38   "%{mabi=n32: %<mfp64}",                                               \
  39                                                                         \
  40   /* Make sure that an endian option is always present.  This makes     \
  41      things like LINK_SPEC easier to write.  */                         \
  42   "%{!EB:%{!EL:%(endian_spec)}}",                                       \
  43                                                                         \
  44   /* -mcode-xonly is a traditional alias for -mcode-readable=pcrel and  \
  45      -mno-data-in-code is a traditional alias for -mcode-readable=no.   \
  46      The latter trumps the former.  */                                  \
  47   "%{mno-data-in-code: -mcode-readable=no}",                            \
  48   "%{!mcode-readable=no: %{mcode-xonly: -mcode-readable=pcrel}}",       \
  49   "%<mno-data-in-code %<mcode-xonly"
  50
  51 /* Use trap rather than break for all but MIPS I ISA.  Force -no-mips16,
  52    so that MIPS16 assembler code requires an explicit ".set mips16".
  53    Very little hand-written MIPS16 assembler exists, and some build
  54    systems expect code to be assembled as non-MIPS16 even if the
  55    prevailing compiler flags select -mips16.  */
  56 #undef SUBTARGET_ASM_SPEC
  57 #define SUBTARGET_ASM_SPEC "\
  58 %{!mips1:--trap} \
  59 %{fPIC|fpic|fPIE|fpie:%{!mips16*:-KPIC}} \
  60 %{mips16:-no-mips16}"
  61
  62 #undef LINK_SPEC
  63 #define LINK_SPEC "\
  64 %(endian_spec) \
  65 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
  66 %{bestGnum} \
  67 %{shared} %{non_shared} %{call_shared} \
  68 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \
  69 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \
  70 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}"
  71
  72 #undef DEFAULT_SIGNED_CHAR
  73 #define DEFAULT_SIGNED_CHAR 0
  74
  75 /* SDE-MIPS won't ever support SDB or MIPS debugging info.  */
  76 #undef SDB_DEBUGGING_INFO
  77 #undef MIPS_DEBUGGING_INFO
  78
  79 /* Describe how we implement __builtin_eh_return.  */
  80
  81 /* At the moment, nothing appears to use more than 2 EH data registers.
  82    The chosen registers must not clash with the return register ($2),
  83    EH_RETURN_STACKADJ ($3), or MIPS_EPILOGUE_TEMP ($5), and they must
  84    be general MIPS16 registers.  Pick $6 and $7.  */
  85 #undef EH_RETURN_DATA_REGNO
  86 #define EH_RETURN_DATA_REGNO(N) \
  87   ((N) < 2 ? 7 - (N) : INVALID_REGNUM)
  88
  89 /* Use $5 as a temporary for both MIPS16 and non-MIPS16.  */
  90 #undef MIPS_EPILOGUE_TEMP_REGNUM
  91 #define MIPS_EPILOGUE_TEMP_REGNUM (GP_REG_FIRST + 5)
  92
  93 /* Using long will always be right for size_t and ptrdiff_t, since
  94    sizeof(long) must equal sizeof(void *), following from the setting
  95    of the -mlong64 option.  */
  96 #undef SIZE_TYPE
  97 #define SIZE_TYPE "long unsigned int"
  98 #undef PTRDIFF_TYPE
  99 #define PTRDIFF_TYPE "long int"
 100
 101 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
 102 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
 103
 104 /* Use standard ELF-style local labels (not '$' as on early Irix).  */
 105 #undef LOCAL_LABEL_PREFIX
 106 #define LOCAL_LABEL_PREFIX "."
 107
 108 /* Use periods rather than dollar signs in special g++ assembler names.  */
 109 #define NO_DOLLAR_IN_LABEL
 110
 111 /* Attach a special .ident directive to the end of the file to identify
 112    the version of GCC which compiled this code.  */
 113 #undef IDENT_ASM_OP
 114 #define IDENT_ASM_OP "\t.ident\t"
 115
 116 /* Output #ident string into the ELF .comment section, so it doesn't
 117    form part of the load image, and so that it can be stripped.  */
 118 #undef ASM_OUTPUT_IDENT
 119 #define ASM_OUTPUT_IDENT(STREAM, STRING) \
 120   fprintf (STREAM, "%s\"%s\"\n", IDENT_ASM_OP, STRING);
 121
 122 /* Currently we don't support 128bit long doubles, so for now we force
 123    n32 to be 64bit.  */
 124 #undef LONG_DOUBLE_TYPE_SIZE
 125 #define LONG_DOUBLE_TYPE_SIZE 64
 126
 127 #ifdef IN_LIBGCC2
 128 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 129 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 130 #endif
 131
 132 /* Force all .init and .fini entries to be 32-bit, not mips16, so that
 133    in a mixed environment they are all the same mode. The crti.asm and
 134    crtn.asm files will also be compiled as 32-bit due to the
 135    -no-mips16 flag in SUBTARGET_ASM_SPEC above. */
 136 #undef CRT_CALL_STATIC_FUNCTION
 137 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
 138    asm (SECTION_OP "\n\
 139         .set push\n\
 140         .set nomips16\n\
 141         jal " USER_LABEL_PREFIX #FUNC "\n\
 142         .set pop\n\
 143         " TEXT_SECTION_ASM_OP);