gcc/config/rs6000/aix71.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 POWER running AIX V7.1.
   3    Copyright (C) 2002-2020 Free Software Foundation, Inc.
   4    Contributed by David Edelsohn (edelsohn@gnu.org).
   5
   6    This file is part of GCC.
   7
   8    GCC is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published
  10    by the Free Software Foundation; either version 3, or (at your
  11    option) any later version.
  12
  13    GCC is distributed in the hope that it will be useful, but WITHOUT
  14    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16    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 /* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  23    get control in TARGET_OPTION_OVERRIDE.  */
  24
  25 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  26 do {                                                                    \
  27   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  28     {                                                                   \
  29       rs6000_isa_flags |= OPTION_MASK_POWERPC64;                        \
  30       warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
  31     }                                                                   \
  32   if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)                      \
  33     {                                                                   \
  34       rs6000_long_double_type_size = 64;                                \
  35       if (global_options_set.x_rs6000_long_double_type_size)            \
  36         warning (0, "soft-float and long-double-128 are incompatible"); \
  37     }                                                                   \
  38   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  39     {                                                                   \
  40       error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
  41     }                                                                   \
  42   if ((rs6000_isa_flags_explicit                                        \
  43        & OPTION_MASK_MINIMAL_TOC) != 0)                                 \
  44     {                                                                   \
  45       if (global_options_set.x_rs6000_current_cmodel                    \
  46           && rs6000_current_cmodel != CMODEL_SMALL)                     \
  47         error ("%<-mcmodel%> incompatible with other toc options");     \
  48       SET_CMODEL (CMODEL_SMALL);                                        \
  49     }                                                                   \
  50   if (rs6000_current_cmodel != CMODEL_SMALL)                            \
  51     {                                                                   \
  52       TARGET_NO_FP_IN_TOC = 0;                                          \
  53       TARGET_NO_SUM_IN_TOC = 0;                                         \
  54     }                                                                   \
  55   if (rs6000_current_cmodel == CMODEL_MEDIUM)                           \
  56     {                                                                   \
  57       rs6000_current_cmodel = CMODEL_LARGE;                             \
  58     }                                                                   \
  59   if (! strcmp (lang_hooks.name, "GNU Go")                              \
  60       && TARGET_32BIT)                                                  \
  61     {                                                                   \
  62       /* aix/ppc doesn't support -mvsx and -maltivec with Go */         \
  63       rs6000_isa_flags &= ~(OPTION_MASK_VSX | OPTION_MASK_ALTIVEC);     \
  64     }                                                                   \
  65 } while (0)
  66
  67 #undef ASM_SPEC
  68 #define ASM_SPEC "-u %{maix64:-a64} %(asm_cpu)"
  69
  70 /* Common ASM definitions used by ASM_SPEC amongst the various targets for
  71    handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.c to
  72    provide the default assembler options if the user uses -mcpu=native, so if
  73    you make changes here, make them there also.  */
  74 #undef ASM_CPU_SPEC
  75 #define ASM_CPU_SPEC \
  76 "%{mcpu=native: %(asm_cpu_native); \
  77   mcpu=power9: -mpwr9; \
  78   mcpu=power8: -mpwr8; \
  79   mcpu=power7: -mpwr7; \
  80   mcpu=power6x|mcpu=power6: -mpwr6; \
  81   mcpu=power5+: -mpwr5x; \
  82   mcpu=power5: -mpwr5; \
  83   mcpu=power4: -mpwr4; \
  84   mcpu=power3: -m620; \
  85   mcpu=powerpc: -mppc; \
  86   mcpu=rs64: -mppc; \
  87   mcpu=603: -m603; \
  88   mcpu=603e: -m603; \
  89   mcpu=604: -m604; \
  90   mcpu=604e: -m604; \
  91   mcpu=620: -m620; \
  92   mcpu=630: -m620; \
  93   mcpu=970|mcpu=G5: -m970; \
  94   !mcpu*: %{mvsx: -mpwr6; \
  95             maltivec: -m970; \
  96             maix64|mpowerpc64: -mppc64; \
  97             : %(asm_default)}} \
  98 -many"
  99
 100 #undef  ASM_DEFAULT_SPEC
 101 #define ASM_DEFAULT_SPEC "-mpwr4"
 102
 103 #undef TARGET_OS_CPP_BUILTINS
 104 #define TARGET_OS_CPP_BUILTINS()     \
 105   do                                 \
 106     {                                \
 107       builtin_define ("_AIX43");     \
 108       builtin_define ("_AIX51");     \
 109       builtin_define ("_AIX52");     \
 110       builtin_define ("_AIX53");     \
 111       builtin_define ("_AIX61");     \
 112       builtin_define ("_AIX71");     \
 113       TARGET_OS_AIX_CPP_BUILTINS (); \
 114     }                                \
 115   while (0)
 116
 117 #undef CPP_SPEC
 118 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 119   %{ansi: -D_ANSI_C_SOURCE}                     \
 120   %{maix64: -D__64BIT__}                        \
 121   %{mpe: -I%R/usr/lpp/ppe.poe/include}          \
 122   %{pthread: -D_THREAD_SAFE}"
 123
 124 /* The GNU C++ standard library requires that these macros be
 125    defined.  Synchronize with libstdc++ os_defines.h.  */
 126 #undef CPLUSPLUS_CPP_SPEC
 127 #define CPLUSPLUS_CPP_SPEC                      \
 128   "-D_ALL_SOURCE -D__COMPATMATH__               \
 129    %{maix64: -D__64BIT__}                       \
 130    %{mpe: -I%R/usr/lpp/ppe.poe/include}         \
 131    %{pthread: -D_THREAD_SAFE}"
 132
 133 #define RS6000_CPU(NAME, CPU, FLAGS)
 134 #include "rs6000-cpus.def"
 135 #undef RS6000_CPU
 136
 137 #undef  TARGET_DEFAULT
 138 #define TARGET_DEFAULT (MASK_PPC_GPOPT | MASK_PPC_GFXOPT | MASK_MFCRF)
 139
 140 #undef  PROCESSOR_DEFAULT
 141 #define PROCESSOR_DEFAULT PROCESSOR_POWER7
 142 #undef  PROCESSOR_DEFAULT64
 143 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
 144
 145 /* AIX 7.1 kernel and assembler have necessary support for Altivec and VSX.  */
 146 #undef OS_MISSING_ALTIVEC
 147
 148 /* Define this macro as a C expression for the initializer of an
 149    array of string to tell the driver program which options are
 150    defaults for this target and thus do not need to be handled
 151    specially when using `MULTILIB_OPTIONS'.
 152
 153    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 154    the target makefile fragment or if none of the options listed in
 155    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 156
 157 #undef  MULTILIB_DEFAULTS
 158
 159 #undef LIB_SPEC
 160 #define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 161    %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 162    %{!maix64:%{!shared:%{g*:-lg}}}\
 163    %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
 164    %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 165    %{pthread:-lpthreads} -lc"
 166
 167 #undef LINK_SPEC
 168 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
 169    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 170    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 171    %{mpe:-binitfini:poe_remote_main}"
 172
 173 #undef STARTFILE_SPEC
 174 #define STARTFILE_SPEC "%{!shared:\
 175    %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
 176      %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
 177        %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
 178    %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s"
 179
 180 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 181
 182 #undef PTRDIFF_TYPE
 183 #define PTRDIFF_TYPE "long int"
 184
 185 /* Type used for wchar_t, as a string used in a declaration.  */
 186 #undef  WCHAR_TYPE
 187 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 188
 189 /* Width of wchar_t in bits.  */
 190 #undef  WCHAR_TYPE_SIZE
 191 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 192
 193 /* AIX 4.2 and above provides initialization and finalization function
 194    support from linker command line.  */
 195 #undef HAS_INIT_SECTION
 196 #define HAS_INIT_SECTION
 197
 198 #undef LD_INIT_SWITCH
 199 #define LD_INIT_SWITCH "-binitfini"
 200
 201 #ifndef _AIX52
 202 extern long long int    atoll(const char *);
 203 #endif
 204
 205 /* This target uses the aix64.opt file.  */
 206 #define TARGET_USES_AIX64_OPT 1
 207
 208 /* Large TOC Support */
 209 #ifdef HAVE_LD_LARGE_TOC
 210 #undef TARGET_CMODEL
 211 #define TARGET_CMODEL rs6000_current_cmodel
 212 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
 213 #else
 214 #define SET_CMODEL(opt) do {} while (0)
 215 #endif
 216
 217 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
 218    but does not have crtbegin/end.  */
 219
 220 #define TARGET_AIX_VERSION 71
 221
 222 /* AIX 7.1 supports DWARF3 debugging, but XCOFF remains the default.  */
 223 #define DWARF2_DEBUGGING_INFO 1
 224 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
 225 #define DEBUG_INFO_SECTION      "0x10000"
 226 #define DEBUG_LINE_SECTION      "0x20000"
 227 #define DEBUG_PUBNAMES_SECTION  "0x30000"
 228 #define DEBUG_PUBTYPES_SECTION  "0x40000"
 229 #define DEBUG_ARANGES_SECTION   "0x50000"
 230 #define DEBUG_ABBREV_SECTION    "0x60000"
 231 #define DEBUG_STR_SECTION       "0x70000"
 232 #define DEBUG_RANGES_SECTION    "0x80000"
 233 #define DEBUG_LOC_SECTION       "0x90000"
 234 #define DEBUG_FRAME_SECTION     "0xA0000"
 235 #define DEBUG_MACINFO_SECTION   "0xB0000"
 236 #define DEBUG_MACRO_SECTION     "0xB0000"
 237