gcc/config/rs6000/aix51.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 POWER running AIX V5.
   3    Copyright (C) 2001-2016 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_POWERPC64 && ! TARGET_64BIT)                               \
  33     {                                                                   \
  34       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  35     }                                                                   \
  36 } while (0);
  37
  38 #undef ASM_SPEC
  39 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  40
  41 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  42    for handling -mcpu=xxx switches.  */
  43 #undef ASM_CPU_SPEC
  44 #define ASM_CPU_SPEC \
  45 "%{!mcpu*: %{!maix64: \
  46   %{!mpowerpc64: %(asm_default)} \
  47   %{mpowerpc64: -mppc64}}} \
  48 %{mcpu=power3: -m620} \
  49 %{mcpu=power4: -m620} \
  50 %{mcpu=powerpc: -mppc} \
  51 %{mcpu=rs64a: -mppc} \
  52 %{mcpu=601: -m601} \
  53 %{mcpu=602: -mppc} \
  54 %{mcpu=603: -m603} \
  55 %{mcpu=603e: -m603} \
  56 %{mcpu=604: -m604} \
  57 %{mcpu=604e: -m604} \
  58 %{mcpu=620: -m620} \
  59 %{mcpu=630: -m620} \
  60 %{mcpu=970: -m620} \
  61 %{mcpu=G5: -m620}"
  62
  63 #undef  ASM_DEFAULT_SPEC
  64 #define ASM_DEFAULT_SPEC "-mppc"
  65
  66 #undef TARGET_OS_CPP_BUILTINS
  67 #define TARGET_OS_CPP_BUILTINS()     \
  68   do                                 \
  69     {                                \
  70       builtin_define ("_AIX43");     \
  71       builtin_define ("_AIX51");     \
  72       TARGET_OS_AIX_CPP_BUILTINS (); \
  73     }                                \
  74   while (0)
  75
  76 #undef CPP_SPEC
  77 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
  78   %{ansi: -D_ANSI_C_SOURCE}                     \
  79   %{maix64: -D__64BIT__}                        \
  80   %{mpe: -I%R/usr/lpp/ppe.poe/include}          \
  81   %{pthread: -D_THREAD_SAFE}"
  82
  83 /* The GNU C++ standard library requires that these macros be
  84    defined.  */
  85 #undef CPLUSPLUS_CPP_SPEC
  86 #define CPLUSPLUS_CPP_SPEC                      \
  87   "-D_ALL_SOURCE                                \
  88    %{maix64: -D__64BIT__}                       \
  89    %{mpe: -I%R/usr/lpp/ppe.poe/include}         \
  90    %{pthread: -D_THREAD_SAFE}"
  91
  92 #undef TARGET_DEFAULT
  93 #define TARGET_DEFAULT 0
  94
  95 #undef PROCESSOR_DEFAULT
  96 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
  97
  98 /* AIX does not support Altivec.  */
  99 #undef  TARGET_ALTIVEC
 100 #define TARGET_ALTIVEC 0
 101 #undef  TARGET_ALTIVEC_ABI
 102 #define TARGET_ALTIVEC_ABI 0
 103 #undef  TARGET_EXTRA_BUILTINS
 104 #define TARGET_EXTRA_BUILTINS 0
 105
 106
 107 /* Define this macro as a C expression for the initializer of an
 108    array of string to tell the driver program which options are
 109    defaults for this target and thus do not need to be handled
 110    specially when using `MULTILIB_OPTIONS'.
 111
 112    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 113    the target makefile fragment or if none of the options listed in
 114    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 115
 116 #undef  MULTILIB_DEFAULTS
 117 #define MULTILIB_DEFAULTS { "mcpu=common" }
 118
 119 #undef LIB_SPEC
 120 #define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 121    %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
 122    %{!maix64:%{!shared:%{g*:-lg}}}\
 123    %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 124    %{pthread:-lpthreads} -lc"
 125
 126 #undef LINK_SPEC
 127 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
 128    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 129    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 130    %{mpe:-binitfini:poe_remote_main}"
 131
 132 #undef STARTFILE_SPEC
 133 #define STARTFILE_SPEC "%{!shared:\
 134    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 135    %{!maix64:\
 136      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 137      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 138
 139 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 140
 141 #undef PTRDIFF_TYPE
 142 #define PTRDIFF_TYPE "long int"
 143
 144 /* Type used for wchar_t, as a string used in a declaration.  */
 145 #undef  WCHAR_TYPE
 146 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 147
 148 /* Width of wchar_t in bits.  */
 149 #undef  WCHAR_TYPE_SIZE
 150 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 151
 152 /* AIX 4.2 and above provides initialization and finalization function
 153    support from linker command line.  */
 154 #undef HAS_INIT_SECTION
 155 #define HAS_INIT_SECTION
 156
 157 #undef LD_INIT_SWITCH
 158 #define LD_INIT_SWITCH "-binitfini"
 159
 160 /* This target uses the aix64.opt file.  */
 161 #define TARGET_USES_AIX64_OPT 1
 162
 163 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
 164    but does not have crtbegin/end.  */
 165
 166 #define TARGET_USE_JCR_SECTION 0
 167
 168 #define TARGET_AIX_VERSION 51
 169
 170 #undef TARGET_LIBC_HAS_FUNCTION
 171 #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function