gcc/config/rs6000/aix71.h

   1 // SPDX-License-Identifier: GPL-3.0-or-later
   2 /* Definitions of target machine for GNU compiler,
   3    for IBM RS/6000 POWER running AIX V7.1.
   4    Copyright (C) 2002-2024 Free Software Foundation, Inc.
   5    Contributed by David Edelsohn (edelsohn@gnu.org).
   6
   7    This file is part of GCC.
   8
   9    GCC is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published
  11    by the Free Software Foundation; either version 3, or (at your
  12    option) any later version.
  13
  14    GCC is distributed in the hope that it will be useful, but WITHOUT
  15    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  17    License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GCC; see the file COPYING3.  If not see
  21    <http://www.gnu.org/licenses/>.  */
  22
  23 /* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  24    get control in TARGET_OPTION_OVERRIDE.  */
  25
  26 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  27 do {                                                                    \
  28   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  29     {                                                                   \
  30       rs6000_isa_flags |= OPTION_MASK_POWERPC64;                        \
  31       warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
  32     }                                                                   \
  33   if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)                      \
  34     {                                                                   \
  35       rs6000_long_double_type_size = 64;                                \
  36       if (OPTION_SET_P (rs6000_long_double_type_size))          \
  37         warning (0, "soft-float and long-double-128 are incompatible"); \
  38     }                                                                   \
  39   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  40     {                                                                   \
  41       error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
  42     }                                                                   \
  43   if ((rs6000_isa_flags_explicit                                        \
  44        & OPTION_MASK_MINIMAL_TOC) != 0)                                 \
  45     {                                                                   \
  46       if (OPTION_SET_P (rs6000_current_cmodel)                  \
  47           && rs6000_current_cmodel != CMODEL_SMALL)                     \
  48         error ("%<-mcmodel%> incompatible with other toc options");     \
  49       SET_CMODEL (CMODEL_SMALL);                                        \
  50     }                                                                   \
  51   if (rs6000_current_cmodel != CMODEL_SMALL)                            \
  52     {                                                                   \
  53       TARGET_NO_FP_IN_TOC = 1;                                          \
  54       TARGET_NO_SUM_IN_TOC = 1;                                         \
  55     }                                                                   \
  56   if (rs6000_current_cmodel == CMODEL_MEDIUM)                           \
  57     {                                                                   \
  58       rs6000_current_cmodel = CMODEL_LARGE;                             \
  59     }                                                                   \
  60   if (! strcmp (lang_hooks.name, "GNU Go")                              \
  61       && TARGET_32BIT)                                                  \
  62     {                                                                   \
  63       /* aix/ppc doesn't support -mvsx and -maltivec with Go */         \
  64       rs6000_isa_flags &= ~(OPTION_MASK_VSX | OPTION_MASK_ALTIVEC);     \
  65     }                                                                   \
  66   if (!OPTION_SET_P (dwarf_version))                            \
  67     /* AIX only supports DWARF 4.  */                                   \
  68     dwarf_version = 4;                                                  \
  69 } while (0)
  70
  71 #define ASM_SPEC32 "-a32"
  72 #define ASM_SPEC64 "-a64"
  73 #define ASM_SPEC_COMMON "-u %(asm_cpu)"
  74
  75 /* Common ASM definitions used by ASM_SPEC amongst the various targets for
  76    handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.cc to
  77    provide the default assembler options if the user uses -mcpu=native, so if
  78    you make changes here, make them there also.  */
  79 #undef ASM_CPU_SPEC
  80 #define ASM_CPU_SPEC \
  81 "%{mcpu=native: %(asm_cpu_native); \
  82   mcpu=power11: -mpwr11; \
  83   mcpu=power10: -mpwr10; \
  84   mcpu=power9: -mpwr9; \
  85   mcpu=power8: -mpwr8; \
  86   mcpu=power7: -mpwr7; \
  87   mcpu=power6x|mcpu=power6: -mpwr6; \
  88   mcpu=power5+: -mpwr5x; \
  89   mcpu=power5: -mpwr5; \
  90   mcpu=power4: -mpwr4; \
  91   mcpu=power3: -m620; \
  92   mcpu=powerpc: -mppc; \
  93   mcpu=rs64: -mppc; \
  94   mcpu=603: -m603; \
  95   mcpu=603e: -m603; \
  96   mcpu=604: -m604; \
  97   mcpu=604e: -m604; \
  98   mcpu=620: -m620; \
  99   mcpu=630: -m620; \
 100   mcpu=970|mcpu=G5: -m970; \
 101   !mcpu*: %(asm_default)} \
 102 -many"
 103
 104 #undef  ASM_DEFAULT_SPEC
 105 #define ASM_DEFAULT_SPEC "-mpwr4"
 106
 107 #undef TARGET_OS_CPP_BUILTINS
 108 #define TARGET_OS_CPP_BUILTINS()     \
 109   do                                 \
 110     {                                \
 111       builtin_define ("_AIX43");     \
 112       builtin_define ("_AIX51");     \
 113       builtin_define ("_AIX52");     \
 114       builtin_define ("_AIX53");     \
 115       builtin_define ("_AIX61");     \
 116       builtin_define ("_AIX71");     \
 117       TARGET_OS_AIX_CPP_BUILTINS (); \
 118     }                                \
 119   while (0)
 120
 121 #define CPP_SPEC32 ""
 122 #define CPP_SPEC64 "-D__64BIT__"
 123 #define CPP_SPEC_COMMON "%{posix: -D_POSIX_SOURCE} \
 124   %{ansi: -D_ANSI_C_SOURCE}                     \
 125   %{mpe: -I%R/usr/lpp/ppe.poe/include}          \
 126   %{pthread: -D_THREAD_SAFE}"
 127
 128 /* The GNU C++ standard library requires that these macros be
 129    defined.  Synchronize with libstdc++ os_defines.h.  */
 130 #define CPLUSPLUS_CPP_SPEC_COMMON               \
 131   "-D_ALL_SOURCE -D__COMPATMATH__               \
 132    %{mpe: -I%R/usr/lpp/ppe.poe/include}         \
 133    %{pthread: -D_THREAD_SAFE}"
 134
 135 #define RS6000_CPU(NAME, CPU, FLAGS)
 136 #include "rs6000-cpus.def"
 137 #undef RS6000_CPU
 138
 139 #undef  TARGET_DEFAULT
 140 #ifdef RS6000_BI_ARCH
 141 #define TARGET_DEFAULT (OPTION_MASK_PPC_GPOPT | OPTION_MASK_PPC_GFXOPT \
 142                         | OPTION_MASK_MFCRF | MASK_POWERPC64 | MASK_64BIT)
 143 #else
 144 #define TARGET_DEFAULT (OPTION_MASK_PPC_GPOPT | OPTION_MASK_PPC_GFXOPT \
 145                         | OPTION_MASK_MFCRF)
 146 #endif
 147
 148 #undef  PROCESSOR_DEFAULT
 149 #define PROCESSOR_DEFAULT PROCESSOR_POWER7
 150 #undef  PROCESSOR_DEFAULT64
 151 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
 152
 153 /* AIX 7.1 kernel and assembler have necessary support for Altivec and VSX.  */
 154 #undef OS_MISSING_ALTIVEC
 155
 156 /* Define this macro as a C expression for the initializer of an
 157    array of string to tell the driver program which options are
 158    defaults for this target and thus do not need to be handled
 159    specially when using `MULTILIB_OPTIONS'.
 160
 161    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 162    the target makefile fragment or if none of the options listed in
 163    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 164
 165 #undef MULTILIB_DEFAULTS
 166
 167 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
 168
 169 #define LIB_SPEC32 "%{!shared:%{g*:-lg}}"
 170 #define LIB_SPEC64 ""
 171 #define LIB_SPEC_COMMON "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 172    %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 173    %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
 174    %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 175    %{mlong-double-128:-lc128}\
 176    %{pthread:-lpthreads} -lc"
 177
 178 #define LINK_SPEC32 "%{!shared:%{g*: %(link_libg) }} -b32"
 179 #define LINK_SPEC64 "-b64"
 180 #define LINK_SPEC_COMMON "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
 181    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 182    %{mpe:-binitfini:poe_remote_main} "
 183
 184 #undef STARTFILE_SPEC
 185 #if DEFAULT_ARCH64_P
 186 #define STARTFILE_SPEC "%{!shared:\
 187    %{!maix32:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
 188      %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
 189        %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
 190    %{!maix32:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
 191      %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
 192 #else
 193 #define STARTFILE_SPEC "%{!shared:\
 194    %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
 195      %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
 196        %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
 197    %{maix64:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
 198      %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
 199 #endif
 200
 201
 202 #undef ASM_SPEC
 203 #undef CPP_SPEC
 204 #undef CPLUSPLUS_CPP_SPEC
 205 #undef LIB_SPEC
 206 #undef LINK_SPEC
 207
 208 #if DEFAULT_ARCH64_P
 209 #define ASM_SPEC "%{maix32:%(asm_spec32);:%(asm_spec64)} %(asm_spec_common)"
 210 #define CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cpp_spec_common)"
 211 #define CPLUSPLUS_CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cplusplus_cpp_spec_common)"
 212 #define LIB_SPEC "%{maix32:%(lib_spec32);:%(lib_spec64)} %(lib_spec_common)"
 213 #define LINK_SPEC "%{maix32:%(link_spec32);:%(link_spec64)} %(link_spec_common)"
 214 #else
 215 #define ASM_SPEC "%{maix64:%(asm_spec64);:%(asm_spec32)} %(asm_spec_common)"
 216 #define CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cpp_spec_common)"
 217 #define CPLUSPLUS_CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cplusplus_cpp_spec_common)"
 218 #define LIB_SPEC "%{maix64:%(lib_spec64);:%(lib_spec32)} %(lib_spec_common)"
 219 #define LINK_SPEC "%{maix64:%(link_spec64);:%(link_spec32)} %(link_spec_common)"
 220 #endif
 221
 222 #undef SUBTARGET_EXTRA_SPECS
 223 #define SUBTARGET_EXTRA_SPECS                                   \
 224   { "asm_spec_common",          ASM_SPEC_COMMON },              \
 225   { "asm_spec32",               ASM_SPEC32 },                   \
 226   { "asm_spec64",               ASM_SPEC64 },                   \
 227   { "cpp_spec_common",          CPP_SPEC_COMMON },              \
 228   { "cplusplus_cpp_spec_common", CPLUSPLUS_CPP_SPEC_COMMON },   \
 229   { "cpp_spec32",               CPP_SPEC32 },                   \
 230   { "cpp_spec64",               CPP_SPEC64 },                   \
 231   { "lib_spec_common",          LIB_SPEC_COMMON },              \
 232   { "lib_spec32",               LIB_SPEC32 },                   \
 233   { "lib_spec64",               LIB_SPEC64 },                   \
 234   { "link_spec_common",         LINK_SPEC_COMMON },             \
 235   { "link_spec32",              LINK_SPEC32 },                  \
 236   { "link_spec64",              LINK_SPEC64 },
 237
 238 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 239
 240 #undef PTRDIFF_TYPE
 241 #define PTRDIFF_TYPE "long int"
 242
 243 /* Type used for wchar_t, as a string used in a declaration.  */
 244 #undef  WCHAR_TYPE
 245 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 246
 247 /* Width of wchar_t in bits.  */
 248 #undef  WCHAR_TYPE_SIZE
 249 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 250
 251 /* AIX 4.2 and above provides initialization and finalization function
 252    support from linker command line.  */
 253 #undef HAS_INIT_SECTION
 254 #define HAS_INIT_SECTION
 255
 256 #undef LD_INIT_SWITCH
 257 #define LD_INIT_SWITCH "-binitfini"
 258
 259 #ifndef _AIX52
 260 extern long long int    atoll(const char *);
 261 #endif
 262
 263 /* This target uses the aix64.opt file.  */
 264 #define TARGET_USES_AIX64_OPT 1
 265
 266 /* Large TOC Support */
 267 #ifdef HAVE_LD_LARGE_TOC
 268 #undef TARGET_CMODEL
 269 #define TARGET_CMODEL rs6000_current_cmodel
 270 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
 271 #else
 272 #define SET_CMODEL(opt) do {} while (0)
 273 #endif
 274
 275 /* System headers are not C++-aware.  */
 276 #define SYSTEM_IMPLICIT_EXTERN_C 1
 277
 278 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
 279    but does not have crtbegin/end.  */
 280
 281 #define TARGET_AIX_VERSION 71
 282
 283 /* AIX 7.1 supports DWARF3+ debugging.  */
 284 #define DWARF2_DEBUGGING_INFO 1
 285 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 286 #define DEBUG_INFO_SECTION      "0x10000"
 287 #define DEBUG_LINE_SECTION      "0x20000"
 288 #define DEBUG_PUBNAMES_SECTION  "0x30000"
 289 #define DEBUG_PUBTYPES_SECTION  "0x40000"
 290 #define DEBUG_ARANGES_SECTION   "0x50000"
 291 #define DEBUG_ABBREV_SECTION    "0x60000"
 292 #define DEBUG_STR_SECTION       "0x70000"
 293 #define DEBUG_RANGES_SECTION    "0x80000"
 294 #define DEBUG_LOC_SECTION       "0x90000"
 295 #define DEBUG_FRAME_SECTION     "0xA0000"
 296 #define DEBUG_MACINFO_SECTION   "0xB0000"
 297 #define DEBUG_MACRO_SECTION     "0xB0000"
 298