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) 2002-2024 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 #undef  LOCAL_LABEL_PREFIX
  50 #define LOCAL_LABEL_PREFIX  "."
  51
  52 /* This is how to store into the string LABEL
  53    the symbol_ref name of an internal numbered label where
  54    PREFIX is the class of label and NUM is the number within the class.
  55    This is suitable for output with `assemble_name'.  */
  56
  57 #undef  ASM_GENERATE_INTERNAL_LABEL
  58 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  59   sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
  60
  61 #undef USER_LABEL_PREFIX
  62 #define USER_LABEL_PREFIX ""
  63
  64 #undef ASM_SPEC
  65 #define ASM_SPEC "%{" FPIE_OR_FPIC_SPEC ":-K PIC} \
  66 %(asm_cpu) %(asm_arch) %(asm_relax)"
  67
  68 #undef STDC_0_IN_SYSTEM_HEADERS
  69
  70 #define HAVE_ENABLE_EXECUTE_STACK
  71
  72 /* Below here exists the merged NetBSD/sparc & NetBSD/sparc64 compiler
  73    description, allowing one to build 32-bit or 64-bit applications
  74    on either.  We define the sparc & sparc64 versions of things,
  75    occasionally a neutral version (should be the same as "netbsd-elf.h")
  76    and then based on SPARC_BI_ARCH, DEFAULT_ARCH32_P, and TARGET_CPU_DEFAULT,
  77    we choose the correct version.  */
  78
  79 /* We use the default NetBSD ELF STARTFILE_SPEC and ENDFILE_SPEC
  80    definitions, even for the SPARC_BI_ARCH compiler, because NetBSD does
  81    not have a default place to find these libraries..  */
  82
  83 /* TARGET_CPU_DEFAULT is set in Makefile.in.  We test for 64-bit default
  84    platform here.  */
  85
  86 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
  87  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
  88 /* A 64 bit v9 compiler with stack-bias,
  89    in a Medium/Low code model environment.  */
  90
  91 #undef TARGET_DEFAULT
  92 #define TARGET_DEFAULT \
  93   (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
  94    + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
  95
  96 #undef SPARC_DEFAULT_CMODEL
  97 #define SPARC_DEFAULT_CMODEL CM_MEDANY
  98
  99 #endif
 100
 101 /* CC1_SPEC for NetBSD/sparc.  */
 102 #define CC1_SPEC32 \
 103  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 104   %{m64: \
 105     -mptr64 -mstack-bias -mno-v8plus -mlong-double-128 \
 106     %{!mcpu*:%{!mv8plus:-mcpu=ultrasparc}} \
 107     %{!mno-vis:%{!mcpu=v9:-mvis}} \
 108     %{p:-mcmodel=medlow} \
 109     %{pg:-mcmodel=medlow}}"
 110
 111 #define CC1_SPEC64 \
 112  "%{m32:%{m64:%emay not use both -m32 and -m64}} \
 113   %{m32: \
 114     -mptr32 -mno-stack-bias \
 115     %{!mlong-double-128:-mlong-double-64} \
 116     %{!mcpu*:%{!mv8plus:-mcpu=cypress}}} \
 117   %{!m32: \
 118     %{p:-mcmodel=medlow} \
 119     %{pg:-mcmodel=medlow}}"
 120
 121 /* Make sure we use the right output format.  Pick a default and then
 122    make sure -m32/-m64 switch to the right one.  */
 123
 124 #define LINK_ARCH32_SPEC "-m elf32_sparc"
 125
 126 #define LINK_ARCH64_SPEC "-m elf64_sparc"
 127
 128 #define LINK_ARCH_SPEC \
 129  "%{m32:%(link_arch32)} \
 130   %{m64:%(link_arch64)} \
 131   %{!m32:%{!m64:%(link_arch_default)}}"
 132
 133 #undef LINK_SPEC
 134 #define LINK_SPEC \
 135  "%(link_arch) \
 136   %{!mno-relax:%{!r:-relax}} \
 137   %(netbsd_link_spec)"
 138
 139 #define NETBSD_ENTRY_POINT "__start"
 140
 141 #if DEFAULT_ARCH32_P
 142 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH32_SPEC
 143 #else
 144 #define LINK_ARCH_DEFAULT_SPEC LINK_ARCH64_SPEC
 145 #endif
 146
 147 /* What extra spec entries do we need?  */
 148 #undef SUBTARGET_EXTRA_SPECS
 149 #define SUBTARGET_EXTRA_SPECS \
 150   { "link_arch32",              LINK_ARCH32_SPEC }, \
 151   { "link_arch64",              LINK_ARCH64_SPEC }, \
 152   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC }, \
 153   { "link_arch",                LINK_ARCH_SPEC }, \
 154   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
 155   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
 156   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 157
 158
 159 /* Build a compiler that supports -m32 and -m64?  */
 160
 161 #ifdef SPARC_BI_ARCH
 162
 163 #undef LONG_DOUBLE_TYPE_SIZE
 164 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 165
 166 #undef  CC1_SPEC
 167 #if DEFAULT_ARCH32_P
 168 #define CC1_SPEC CC1_SPEC32
 169 #else
 170 #define CC1_SPEC CC1_SPEC64
 171 #endif
 172
 173 #if DEFAULT_ARCH32_P
 174 #define MULTILIB_DEFAULTS { "m32" }
 175 #else
 176 #define MULTILIB_DEFAULTS { "m64" }
 177 #endif
 178
 179 #else   /* SPARC_BI_ARCH */
 180
 181 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 182  || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
 183
 184 #undef LONG_DOUBLE_TYPE_SIZE
 185 #define LONG_DOUBLE_TYPE_SIZE 128
 186
 187 #undef  CC1_SPEC
 188 #define CC1_SPEC CC1_SPEC64
 189
 190 #else   /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 191         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 192
 193 /* A 32-bit only compiler.  NetBSD don't support 128 bit `long double'
 194    for 32-bit code, unlike Solaris.  */
 195
 196 #undef LONG_DOUBLE_TYPE_SIZE
 197 #define LONG_DOUBLE_TYPE_SIZE 64
 198
 199 #undef  CC1_SPEC
 200 #define CC1_SPEC CC1_SPEC32
 201
 202 #endif  /* TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
 203         || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc */
 204
 205 #endif  /* SPARC_BI_ARCH */
 206
 207 /* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
 208 #undef CTORS_SECTION_ASM_OP
 209 #undef DTORS_SECTION_ASM_OP