gcc/config/sparc/netbsd-elf.h

   1 /* Definitions of target machine for GCC, for ELF on NetBSD/sparc
   2    and NetBSD/sparc64.
   3    Copyright (C) 2002-2018 Free Software Foundation, Inc.
   4    Contributed by Matthew Green (mrg@eterna.com.au).
   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 TARGET_OS_CPP_BUILTINS()                        \
  23   do                                                    \
  24     {                                                   \
  25       NETBSD_OS_CPP_BUILTINS_ELF();                     \
  26       if (TARGET_ARCH64)                                \
  27         {                                               \
  28           builtin_define ("__sparc64__");               \
  29           builtin_define ("__sparc_v9__");              \
  30           builtin_define ("__sparcv9");                 \
  31         }                                               \
  32       else                                              \
  33         builtin_define ("__sparc");                     \
  34       builtin_define ("__sparc__");                     \
  35     }                                                   \
  36   while (0)
  37
  38 /* CPP defines used by all NetBSD targets.  */
  39 #undef CPP_SUBTARGET_SPEC
  40 #define CPP_SUBTARGET_SPEC "%(netbsd_cpp_spec)"
  41
  42 /* SIZE_TYPE and PTRDIFF_TYPE are wrong from sparc/sparc.h.  */
  43 #undef SIZE_TYPE
  44 #define SIZE_TYPE "long unsigned int"
  45
  46 #undef PTRDIFF_TYPE
  47 #define PTRDIFF_TYPE "long int"
  48
  49 /* This is the char to use for continuation (in case we need to turn
  50    continuation back on).  */
  51 #undef DBX_CONTIN_CHAR
  52 #define DBX_CONTIN_CHAR '?'
  53
  54 #undef  LOCAL_LABEL_PREFIX
  55 #define LOCAL_LABEL_PREFIX  "."
  56
  57 /* This is how to store into the string LABEL
  58    the symbol_ref name of an internal numbered label where
  59    PREFIX is the class of label and NUM is the number within the class.
  60    This is suitable for output with `assemble_name'.  */
  61
  62 #undef  ASM_GENERATE_INTERNAL_LABEL
  63 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  64   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  65
  66 #undef USER_LABEL_PREFIX
  67 #define USER_LABEL_PREFIX ""
  68
  69 #undef ASM_SPEC
  70 #define ASM_SPEC "%{" FPIE_OR_FPIC_SPEC ":-K PIC} \
  71 %(asm_cpu) %(asm_arch) %(asm_relax)"
  72
  73 #undef STDC_0_IN_SYSTEM_HEADERS
  74
  75 #define HAVE_ENABLE_EXECUTE_STACK
  76
  77 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
  78    description, allowing one to build 32-bit or 64-bit applications
  79    on either.  We define the sparc & sparc64 versions of things,
  80    occasionally a neutral version (should be the same as "netbsd-elf.h")
  81    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
  82    we choose the correct version.  */
  83
  84 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
  85    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
  86    not have a default place to find these libraries..  */
  87
  88 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
  89    platform here.  */
  90
  91 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
  92  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  93 /* A 64 bit v9 compiler with stack-bias,
  94    in a Medium/Low code model environment.  */
  95
  96 #undef TARGET_DEFAULT
  97 #define TARGET_DEFAULT \
  98   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
  99    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
 100
 101 #undef SPARC_DEFAULT_CMODEL
 102 #define SPARC_DEFAULT_CMODEL CM_MEDANY
 103
 104 #endif
 105
 106 /* CC1_SPEC for NetBSD/sparc.  */
 107 #define CC1_SPEC32 \
 108  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 109   %{m64: \
 110     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 111     %{!mcpu*:%{!mv8plus:-mcpu=ultrasparc}} \
 112     %{!mno-vis:%{!mcpu=v9:-mvis}} \
 113     %{p:-mcmodel=medlow} \
 114     %{pg:-mcmodel=medlow}}"
 115
 116 #define CC1_SPEC64 \
 117  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 118   %{m32: \
 119     -mptr32 -mno-stack-bias \
 120     %{!mlong-double-128:-mlong-double-64} \
 121     %{!mcpu*:%{!mv8plus:-mcpu=cypress}}} \
 122   %{!m32: \
 123     %{p:-mcmodel=medlow} \
 124     %{pg:-mcmodel=medlow}}"
 125
 126 /* Make sure we use the right output format.  Pick a default and then
 127    make sure -m32/-m64 switch to the right one.  */
 128
 129 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 130
 131 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 132
 133 #define LINK_ARCH_SPEC \
 134  "%{m32:%(link_arch32)} \
 135   %{m64:%(link_arch64)} \
 136   %{!m32:%{!m64:%(link_arch_default)}}"
 137
 138 #undef LINK_SPEC
 139 #define LINK_SPEC \
 140  "%(link_arch) \
 141   %{!mno-relax:%{!r:-relax}} \
 142   %(netbsd_link_spec)"
 143
 144 #define NETBSD_ENTRY_POINT "__start"
 145
 146 #if DEFAULT_ARCH32_P
 147 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 148 #else
 149 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 150 #endif
 151
 152 /* What extra spec entries do we need?  */
 153 #undef SUBTARGET_EXTRA_SPECS
 154 #define SUBTARGET_EXTRA_SPECS \
 155   { "link_arch32",              LINK_ARCH32_SPEC }, \
 156   { "link_arch64",              LINK_ARCH64_SPEC }, \
 157   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 158   { "link_arch",                LINK_ARCH_SPEC }, \
 159   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 160   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 161   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 162
 163
 164 /* Build a compiler that supports -m32 and -m64?  */
 165
 166 #ifdef SPARC_BI_ARCH
 167
 168 #undef LONG_DOUBLE_TYPE_SIZE
 169 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 170
 171 #undef  CC1_SPEC
 172 #if DEFAULT_ARCH32_P
 173 #define CC1_SPEC CC1_SPEC32
 174 #else
 175 #define CC1_SPEC CC1_SPEC64
 176 #endif
 177
 178 #if DEFAULT_ARCH32_P
 179 #define MULTILIB_DEFAULTS { "m32" }
 180 #else
 181 #define MULTILIB_DEFAULTS { "m64" }
 182 #endif
 183
 184 #else   /* SPARC_BI_ARCH */
 185
 186 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 187  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 188
 189 #undef LONG_DOUBLE_TYPE_SIZE
 190 #define LONG_DOUBLE_TYPE_SIZE 128
 191
 192 #undef  CC1_SPEC
 193 #define CC1_SPEC CC1_SPEC64
 194
 195 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 196         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 197
 198 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 199    for 32-bit code, unlike Solaris.  */
 200
 201 #undef LONG_DOUBLE_TYPE_SIZE
 202 #define LONG_DOUBLE_TYPE_SIZE 64
 203
 204 #undef  CC1_SPEC
 205 #define CC1_SPEC CC1_SPEC32
 206
 207 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 208         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 209
 210 #endif  /* SPARC_BI_ARCH */
 211
 212 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 213 #undef CTORS_SECTION_ASM_OP
 214 #undef DTORS_SECTION_ASM_OP