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, 2004, 2005 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                     \
  27                           | MASK_POWERPC | MASK_PPC_GFXOPT,             \
  28    N_("Compile for 64-bit pointers") },                                 \
  29   {"aix32",             - (MASK_64BIT | MASK_POWERPC64),                \
  30    N_("Compile for 32-bit pointers") },                                 \
  31   {"pe",                0,                                              \
  32    N_("Support message passing with the Parallel Environment") },
  33
  34 /* Sometimes certain combinations of command options do not make sense
  35    on a particular target machine.  You can define a macro
  36    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
  37    defined, is executed once just after all the command options have
  38    been parsed.
  39
  40    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  41    get control.  */
  42
  43 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
  44 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  45 do {                                                                    \
  46   if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))               \
  47     {                                                                   \
  48       target_flags &= ~NON_POWERPC_MASKS;                               \
  49       warning (0, "-maix64 and POWER architecture are incompatible");   \
  50     }                                                                   \
  51   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  52     {                                                                   \
  53       target_flags |= MASK_POWERPC64;                                   \
  54       warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
  55     }                                                                   \
  56   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  57     {                                                                   \
  58       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  59     }                                                                   \
  60 } while (0);
  61
  62 #undef ASM_SPEC
  63 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  64
  65 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  66    for handling -mcpu=xxx switches.  */
  67 #undef ASM_CPU_SPEC
  68 #define ASM_CPU_SPEC \
  69 "%{!mcpu*: %{!maix64: \
  70   %{mpowerpc64: -mppc64} \
  71   %{!mpower64: %(asm_default)}}} \
  72 %{mcpu=power3: -m620} \
  73 %{mcpu=power4: -m620} \
  74 %{mcpu=powerpc: -mppc} \
  75 %{mcpu=rs64a: -mppc} \
  76 %{mcpu=603: -m603} \
  77 %{mcpu=603e: -m603} \
  78 %{mcpu=604: -m604} \
  79 %{mcpu=604e: -m604} \
  80 %{mcpu=620: -m620} \
  81 %{mcpu=630: -m620} \
  82 %{mcpu=970: -m620} \
  83 %{mcpu=G5: -m620}"
  84
  85 #undef  ASM_DEFAULT_SPEC
  86 #define ASM_DEFAULT_SPEC "-mppc"
  87
  88 #undef TARGET_OS_CPP_BUILTINS
  89 #define TARGET_OS_CPP_BUILTINS()     \
  90   do                                 \
  91     {                                \
  92       builtin_define ("_AIX43");     \
  93       builtin_define ("_AIX51");     \
  94       builtin_define ("_AIX52");     \
  95       TARGET_OS_AIX_CPP_BUILTINS (); \
  96     }                                \
  97   while (0)
  98
  99 #undef CPP_SPEC
 100 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 101   %{ansi: -D_ANSI_C_SOURCE}                     \
 102   %{maix64: -D__64BIT__}                        \
 103   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 104   %{pthread: -D_THREAD_SAFE}"
 105
 106 /* The GNU C++ standard library requires that these macros be
 107    defined.  Synchronize with libstdc++ os_defines.h.  */
 108 #undef CPLUSPLUS_CPP_SPEC
 109 #define CPLUSPLUS_CPP_SPEC                      \
 110   "-D_ALL_SOURCE                                \
 111    %{maix64: -D__64BIT__}                       \
 112    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 113    %{pthread: -D_THREAD_SAFE}"
 114
 115 #undef  TARGET_DEFAULT
 116 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 117
 118 #undef  PROCESSOR_DEFAULT
 119 #define PROCESSOR_DEFAULT PROCESSOR_PPC630
 120 #undef  PROCESSOR_DEFAULT64
 121 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
 122
 123 #undef  TARGET_POWER
 124 #define TARGET_POWER 0
 125
 126 /* Define this macro as a C expression for the initializer of an
 127    array of string to tell the driver program which options are
 128    defaults for this target and thus do not need to be handled
 129    specially when using `MULTILIB_OPTIONS'.
 130
 131    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 132    the target makefile fragment or if none of the options listed in
 133    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 134
 135 #undef  MULTILIB_DEFAULTS
 136
 137 #undef LIB_SPEC
 138 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 139    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 140    %{!maix64:%{!shared:%{g*:-lg}}}\
 141    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 142    %{pthread:-lpthreads} -lc"
 143
 144 #undef LINK_SPEC
 145 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 146    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 147    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 148    %{mpe:-binitfini:poe_remote_main}"
 149
 150 #undef STARTFILE_SPEC
 151 #define STARTFILE_SPEC "%{!shared:\
 152    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 153    %{!maix64:\
 154      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 155      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 156
 157 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 158
 159 #undef PTRDIFF_TYPE
 160 #define PTRDIFF_TYPE "long int"
 161
 162 /* Type used for wchar_t, as a string used in a declaration.  */
 163 #undef  WCHAR_TYPE
 164 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 165
 166 /* Width of wchar_t in bits.  */
 167 #undef  WCHAR_TYPE_SIZE
 168 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 169
 170 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 171    and "cror 31,31,31" for POWER architecture.  */
 172
 173 #undef RS6000_CALL_GLUE
 174 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 175
 176 /* AIX 4.2 and above provides initialization and finalization function
 177    support from linker command line.  */
 178 #undef HAS_INIT_SECTION
 179 #define HAS_INIT_SECTION
 180
 181 #undef LD_INIT_SWITCH
 182 #define LD_INIT_SWITCH "-binitfini"
 183
 184 /* AIX 5.2 has the float and long double forms of math functions.  */
 185 #undef TARGET_C99_FUNCTIONS
 186 #define TARGET_C99_FUNCTIONS  1
 187
 188 #ifndef _AIX52
 189 extern long long int    atoll(const char *);
 190 #endif