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, 2003 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 2, 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 COPYING.  If not, write to the
  20    Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  21    MA 02111-1307, USA.  */
  22
  23 /* AIX V5 and above support 64-bit executables.  */
  24 #undef  SUBSUBTARGET_SWITCHES
  25 #define SUBSUBTARGET_SWITCHES                                   \
  26   {"aix64",             MASK_64BIT | MASK_POWERPC64 | MASK_POWERPC,     \
  27    N_("Compile for 64-bit pointers") },                                 \
  28   {"aix32",             - (MASK_64BIT | MASK_POWERPC64),                \
  29    N_("Compile for 32-bit pointers") },                                 \
  30   {"pe",                0,                                              \
  31    N_("Support message passing with the Parallel Environment") },
  32
  33 /* Sometimes certain combinations of command options do not make sense
  34    on a particular target machine.  You can define a macro
  35    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
  36    defined, is executed once just after all the command options have
  37    been parsed.
  38
  39    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  40    get control.  */
  41
  42 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
  43 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  44 do {                                                                    \
  45   if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))               \
  46     {                                                                   \
  47       target_flags &= ~NON_POWERPC_MASKS;                               \
  48       warning ("-maix64 and POWER architecture are incompatible");      \
  49     }                                                                   \
  50   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  51     {                                                                   \
  52       target_flags |= MASK_POWERPC64;                                   \
  53       warning ("-maix64 requires PowerPC64 architecture remain enabled"); \
  54     }                                                                   \
  55   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  56     {                                                                   \
  57       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  58     }                                                                   \
  59 } while (0);
  60
  61 #undef ASM_SPEC
  62 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  63
  64 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  65    for handling -mcpu=xxx switches.  */
  66 #undef ASM_CPU_SPEC
  67 #define ASM_CPU_SPEC \
  68 "%{!mcpu*: %{!maix64: \
  69   %{mpower: %{!mpower2: -mpwr}} \
  70   %{mpower2: -mpwr2} \
  71   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  72   %{mpowerpc64: -mppc64} \
  73   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  74 %{mcpu=common: -mcom} \
  75 %{mcpu=power: -mpwr} \
  76 %{mcpu=power2: -mpwr2} \
  77 %{mcpu=power3: -m620} \
  78 %{mcpu=power4: -m620} \
  79 %{mcpu=powerpc: -mppc} \
  80 %{mcpu=rios: -mpwr} \
  81 %{mcpu=rios1: -mpwr} \
  82 %{mcpu=rios2: -mpwr2} \
  83 %{mcpu=rsc: -mpwr} \
  84 %{mcpu=rsc1: -mpwr} \
  85 %{mcpu=rs64a: -mppc} \
  86 %{mcpu=601: -m601} \
  87 %{mcpu=602: -mppc} \
  88 %{mcpu=603: -m603} \
  89 %{mcpu=603e: -m603} \
  90 %{mcpu=604: -m604} \
  91 %{mcpu=604e: -m604} \
  92 %{mcpu=620: -m620} \
  93 %{mcpu=630: -m620}"
  94
  95 #undef  ASM_DEFAULT_SPEC
  96 #define ASM_DEFAULT_SPEC "-mcom"
  97
  98 #undef TARGET_OS_CPP_BUILTINS
  99 #define TARGET_OS_CPP_BUILTINS()      \
 100   do                                  \
 101     {                                 \
 102       builtin_define ("_IBMR2");      \
 103       builtin_define ("_POWER");      \
 104       builtin_define ("_LONG_LONG");  \
 105       builtin_define ("_AIX");        \
 106       builtin_define ("_AIX32");      \
 107       builtin_define ("_AIX41");      \
 108       builtin_define ("_AIX43");      \
 109       builtin_define ("_AIX51");      \
 110       builtin_assert ("system=unix"); \
 111       builtin_assert ("system=aix");  \
 112     }                                 \
 113   while (0)
 114
 115 #undef CPP_SPEC
 116 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 117   %{ansi: -D_ANSI_C_SOURCE}                     \
 118   %{maix64: -D__64BIT__}                        \
 119   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 120   %{pthread: -D_THREAD_SAFE}"
 121
 122 /* The GNU C++ standard library requires that these macros be
 123    defined.  */
 124 #undef CPLUSPLUS_CPP_SPEC
 125 #define CPLUSPLUS_CPP_SPEC                      \
 126   "-D_XOPEN_SOURCE=500                          \
 127    -D_XOPEN_SOURCE_EXTENDED=1                   \
 128    -D_LARGE_FILE_API                            \
 129    -D_ALL_SOURCE                                \
 130    %{maix64: -D__64BIT__}                       \
 131    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 132    %{pthread: -D_THREAD_SAFE}"
 133
 134 #undef TARGET_DEFAULT
 135 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 136
 137 #undef PROCESSOR_DEFAULT
 138 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 139
 140 /* Define this macro as a C expression for the initializer of an
 141    array of string to tell the driver program which options are
 142    defaults for this target and thus do not need to be handled
 143    specially when using `MULTILIB_OPTIONS'.
 144
 145    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 146    the target makefile fragment or if none of the options listed in
 147    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 148
 149 #undef  MULTILIB_DEFAULTS
 150 #define MULTILIB_DEFAULTS { "mcpu=common" }
 151
 152 #undef LIB_SPEC
 153 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 154    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 155    %{!maix64:%{!shared:%{g*:-lg}}}\
 156    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 157    %{pthread:-lpthreads} -lc"
 158
 159 #undef LINK_SPEC
 160 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 161    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 162    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 163    %{mpe:-binitfini:poe_remote_main}"
 164
 165 #undef STARTFILE_SPEC
 166 #define STARTFILE_SPEC "%{!shared:\
 167    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 168    %{!maix64:\
 169      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 170      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 171
 172 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 173
 174 #undef PTRDIFF_TYPE
 175 #define PTRDIFF_TYPE "long int"
 176
 177 /* Type used for wchar_t, as a string used in a declaration.  */
 178 #undef  WCHAR_TYPE
 179 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 180
 181 /* Width of wchar_t in bits.  */
 182 #undef  WCHAR_TYPE_SIZE
 183 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 184 #define MAX_WCHAR_TYPE_SIZE 32
 185
 186 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 187    and "cror 31,31,31" for POWER architecture.  */
 188
 189 #undef RS6000_CALL_GLUE
 190 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 191
 192 /* AIX 4.2 and above provides initialization and finalization function
 193    support from linker command line.  */
 194 #undef HAS_INIT_SECTION
 195 #define HAS_INIT_SECTION
 196
 197 #undef LD_INIT_SWITCH
 198 #define LD_INIT_SWITCH "-binitfini"
 199
 200 /* AIX 5.1 has the float and long double forms of math functions.  */
 201 #undef TARGET_C99_FUNCTIONS
 202 #define TARGET_C99_FUNCTIONS  1
 203