gcc/config/rs6000/aix52.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 POWER running AIX V5.2.
   3    Copyright (C) 2002, 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   %{mpowerpc64: -mppc64} \
  70   %{!mpower64: %(asm_default)}}} \
  71 %{mcpu=power3: -m620} \
  72 %{mcpu=power4: -m620} \
  73 %{mcpu=powerpc: -mppc} \
  74 %{mcpu=rs64a: -mppc} \
  75 %{mcpu=603: -m603} \
  76 %{mcpu=603e: -m603} \
  77 %{mcpu=604: -m604} \
  78 %{mcpu=604e: -m604} \
  79 %{mcpu=620: -m620} \
  80 %{mcpu=630: -m620}"
  81
  82 #undef  ASM_DEFAULT_SPEC
  83 #define ASM_DEFAULT_SPEC "-mppc"
  84
  85 #undef TARGET_OS_CPP_BUILTINS
  86 #define TARGET_OS_CPP_BUILTINS()      \
  87   do                                  \
  88     {                                 \
  89       builtin_define ("_IBMR2");      \
  90       builtin_define ("_POWER");      \
  91       builtin_define ("_LONG_LONG");  \
  92       builtin_define ("_AIX");        \
  93       builtin_define ("_AIX32");      \
  94       builtin_define ("_AIX41");      \
  95       builtin_define ("_AIX43");      \
  96       builtin_define ("_AIX51");      \
  97       builtin_define ("_AIX52");      \
  98       builtin_assert ("system=unix"); \
  99       builtin_assert ("system=aix");  \
 100     }                                 \
 101   while (0)
 102
 103 #undef CPP_SPEC
 104 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 105   %{ansi: -D_ANSI_C_SOURCE}                     \
 106   %{maix64: -D__64BIT__}                        \
 107   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 108   %{pthread: -D_THREAD_SAFE}"
 109
 110 /* The GNU C++ standard library requires that these macros be
 111    defined.  */
 112 #undef CPLUSPLUS_CPP_SPEC
 113 #define CPLUSPLUS_CPP_SPEC                      \
 114   "-D_XOPEN_SOURCE=500                          \
 115    -D_XOPEN_SOURCE_EXTENDED=1                   \
 116    -D_LARGE_FILE_API                            \
 117    -D_ALL_SOURCE                                \
 118    %{maix64: -D__64BIT__}                       \
 119    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 120    %{pthread: -D_THREAD_SAFE}"
 121
 122 #undef  TARGET_DEFAULT
 123 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 124
 125 #undef  PROCESSOR_DEFAULT
 126 #define PROCESSOR_DEFAULT PROCESSOR_PPC630
 127 #undef  PROCESSOR_DEFAULT64
 128 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
 129
 130 #undef  TARGET_POWER
 131 #define TARGET_POWER 0
 132
 133 /* Define this macro as a C expression for the initializer of an
 134    array of string to tell the driver program which options are
 135    defaults for this target and thus do not need to be handled
 136    specially when using `MULTILIB_OPTIONS'.
 137
 138    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 139    the target makefile fragment or if none of the options listed in
 140    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 141
 142 #undef  MULTILIB_DEFAULTS
 143
 144 #undef LIB_SPEC
 145 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 146    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 147    %{!maix64:%{!shared:%{g*:-lg}}}\
 148    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 149    %{pthread:-lpthreads} -lc"
 150
 151 #undef LINK_SPEC
 152 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 153    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 154    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 155    %{mpe:-binitfini:poe_remote_main}"
 156
 157 #undef STARTFILE_SPEC
 158 #define STARTFILE_SPEC "%{!shared:\
 159    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 160    %{!maix64:\
 161      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 162      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 163
 164 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 165
 166 #undef PTRDIFF_TYPE
 167 #define PTRDIFF_TYPE "long int"
 168
 169 /* Type used for wchar_t, as a string used in a declaration.  */
 170 #undef  WCHAR_TYPE
 171 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 172
 173 /* Width of wchar_t in bits.  */
 174 #undef  WCHAR_TYPE_SIZE
 175 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 176 #define MAX_WCHAR_TYPE_SIZE 32
 177
 178 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 179    and "cror 31,31,31" for POWER architecture.  */
 180
 181 #undef RS6000_CALL_GLUE
 182 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 183
 184 /* AIX 4.2 and above provides initialization and finalization function
 185    support from linker command line.  */
 186 #undef HAS_INIT_SECTION
 187 #define HAS_INIT_SECTION
 188
 189 #undef LD_INIT_SWITCH
 190 #define LD_INIT_SWITCH "-binitfini"