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) 2002-2018 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 } while (0)
  60
  61 #undef ASM_SPEC
  62 #define ASM_SPEC "-u %{maix64:-a64} %(asm_cpu)"
  63
  64 /* Common ASM definitions used by ASM_SPEC amongst the various targets for
  65    handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.c to
  66    provide the default assembler options if the user uses -mcpu=native, so if
  67    you make changes here, make them there also.  */
  68 #undef ASM_CPU_SPEC
  69 #define ASM_CPU_SPEC \
  70 "%{mcpu=native: %(asm_cpu_native); \
  71   mcpu=power9: -mpwr9; \
  72   mcpu=power8: -mpwr8; \
  73   mcpu=power7: -mpwr7; \
  74   mcpu=power6x|mcpu=power6: -mpwr6; \
  75   mcpu=power5+: -mpwr5x; \
  76   mcpu=power5: -mpwr5; \
  77   mcpu=power4: -mpwr4; \
  78   mcpu=power3: -m620; \
  79   mcpu=powerpc: -mppc; \
  80   mcpu=rs64a: -mppc; \
  81   mcpu=603: -m603; \
  82   mcpu=603e: -m603; \
  83   mcpu=604: -m604; \
  84   mcpu=604e: -m604; \
  85   mcpu=620: -m620; \
  86   mcpu=630: -m620; \
  87   mcpu=970|mcpu=G5: -m970; \
  88   !mcpu*: %{mvsx: -mpwr6; \
  89             maltivec: -m970; \
  90             maix64|mpowerpc64: -mppc64; \
  91             : %(asm_default)}; \
  92   :%eMissing -mcpu option in ASM_SPEC_CPU?\n} \
  93 -many"
  94
  95 #undef  ASM_DEFAULT_SPEC
  96 #define ASM_DEFAULT_SPEC "-mpwr4"
  97
  98 #undef TARGET_OS_CPP_BUILTINS
  99 #define TARGET_OS_CPP_BUILTINS()     \
 100   do                                 \
 101     {                                \
 102       builtin_define ("_AIX43");     \
 103       builtin_define ("_AIX51");     \
 104       builtin_define ("_AIX52");     \
 105       builtin_define ("_AIX53");     \
 106       builtin_define ("_AIX61");     \
 107       builtin_define ("_AIX71");     \
 108       TARGET_OS_AIX_CPP_BUILTINS (); \
 109     }                                \
 110   while (0)
 111
 112 #undef CPP_SPEC
 113 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 114   %{ansi: -D_ANSI_C_SOURCE}                     \
 115   %{maix64: -D__64BIT__}                        \
 116   %{mpe: -I%R/usr/lpp/ppe.poe/include}          \
 117   %{pthread: -D_THREAD_SAFE}"
 118
 119 /* The GNU C++ standard library requires that these macros be
 120    defined.  Synchronize with libstdc++ os_defines.h.  */
 121 #undef CPLUSPLUS_CPP_SPEC
 122 #define CPLUSPLUS_CPP_SPEC                      \
 123   "-D_ALL_SOURCE -D__COMPATMATH__               \
 124    %{maix64: -D__64BIT__}                       \
 125    %{mpe: -I%R/usr/lpp/ppe.poe/include}         \
 126    %{pthread: -D_THREAD_SAFE}"
 127
 128 #define RS6000_CPU(NAME, CPU, FLAGS)
 129 #include "rs6000-cpus.def"
 130 #undef RS6000_CPU
 131
 132 #undef  TARGET_DEFAULT
 133 #define TARGET_DEFAULT (MASK_PPC_GPOPT | MASK_PPC_GFXOPT | MASK_MFCRF)
 134
 135 #undef  PROCESSOR_DEFAULT
 136 #define PROCESSOR_DEFAULT PROCESSOR_POWER7
 137 #undef  PROCESSOR_DEFAULT64
 138 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
 139
 140 /* AIX 7.1 kernel and assembler have necessary support for Altivec and VSX.  */
 141 #undef OS_MISSING_ALTIVEC
 142
 143 /* Define this macro as a C expression for the initializer of an
 144    array of string to tell the driver program which options are
 145    defaults for this target and thus do not need to be handled
 146    specially when using `MULTILIB_OPTIONS'.
 147
 148    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 149    the target makefile fragment or if none of the options listed in
 150    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 151
 152 #undef  MULTILIB_DEFAULTS
 153
 154 #undef LIB_SPEC
 155 #define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 156    %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 157    %{!maix64:%{!shared:%{g*:-lg}}}\
 158    %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
 159    %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 160    %{pthread:-lpthreads} -lc"
 161
 162 #undef LINK_SPEC
 163 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
 164    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 165    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 166    %{mpe:-binitfini:poe_remote_main}"
 167
 168 #undef STARTFILE_SPEC
 169 #define STARTFILE_SPEC "%{!shared:\
 170    %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
 171      %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
 172        %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
 173    %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s"
 174
 175 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 176
 177 #undef PTRDIFF_TYPE
 178 #define PTRDIFF_TYPE "long int"
 179
 180 /* Type used for wchar_t, as a string used in a declaration.  */
 181 #undef  WCHAR_TYPE
 182 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 183
 184 /* Width of wchar_t in bits.  */
 185 #undef  WCHAR_TYPE_SIZE
 186 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 187
 188 /* AIX 4.2 and above provides initialization and finalization function
 189    support from linker command line.  */
 190 #undef HAS_INIT_SECTION
 191 #define HAS_INIT_SECTION
 192
 193 #undef LD_INIT_SWITCH
 194 #define LD_INIT_SWITCH "-binitfini"
 195
 196 #ifndef _AIX52
 197 extern long long int    atoll(const char *);
 198 #endif
 199
 200 /* This target uses the aix64.opt file.  */
 201 #define TARGET_USES_AIX64_OPT 1
 202
 203 /* Large TOC Support */
 204 #ifdef HAVE_LD_LARGE_TOC
 205 #undef TARGET_CMODEL
 206 #define TARGET_CMODEL rs6000_current_cmodel
 207 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
 208 #else
 209 #define SET_CMODEL(opt) do {} while (0)
 210 #endif
 211
 212 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
 213    but does not have crtbegin/end.  */
 214
 215 #define TARGET_AIX_VERSION 71
 216
 217 /* AIX 7.1 supports DWARF3 debugging, but XCOFF remains the default.  */
 218 #define DWARF2_DEBUGGING_INFO 1
 219 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
 220 #define DEBUG_INFO_SECTION      "0x10000"
 221 #define DEBUG_LINE_SECTION      "0x20000"
 222 #define DEBUG_PUBNAMES_SECTION  "0x30000"
 223 #define DEBUG_PUBTYPES_SECTION  "0x40000"
 224 #define DEBUG_ARANGES_SECTION   "0x50000"
 225 #define DEBUG_ABBREV_SECTION    "0x60000"
 226 #define DEBUG_STR_SECTION       "0x70000"
 227 #define DEBUG_RANGES_SECTION    "0x80000"
 228 #define DEBUG_LOC_SECTION       "0x90000"
 229 #define DEBUG_FRAME_SECTION     "0xA0000"
 230 #define DEBUG_MACINFO_SECTION   "0xB0000"
 231 #define DEBUG_MACRO_SECTION     "0xB0000"
 232