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, 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 | 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 %{mcpu=970: -m620} \
  95 %{mcpu=G5: -m620}"
  96
  97 #undef  ASM_DEFAULT_SPEC
  98 #define ASM_DEFAULT_SPEC "-mcom"
  99
 100 #undef TARGET_OS_CPP_BUILTINS
 101 #define TARGET_OS_CPP_BUILTINS()     \
 102   do                                 \
 103     {                                \
 104       builtin_define ("_AIX43");     \
 105       builtin_define ("_AIX51");     \
 106       TARGET_OS_AIX_CPP_BUILTINS (); \
 107     }                                \
 108   while (0)
 109
 110 #undef CPP_SPEC
 111 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 112   %{ansi: -D_ANSI_C_SOURCE}                     \
 113   %{maix64: -D__64BIT__}                        \
 114   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 115   %{pthread: -D_THREAD_SAFE}"
 116
 117 /* The GNU C++ standard library requires that these macros be
 118    defined.  */
 119 #undef CPLUSPLUS_CPP_SPEC
 120 #define CPLUSPLUS_CPP_SPEC                      \
 121   "-D_ALL_SOURCE                                \
 122    %{maix64: -D__64BIT__}                       \
 123    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 124    %{pthread: -D_THREAD_SAFE}"
 125
 126 #undef TARGET_DEFAULT
 127 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 128
 129 #undef PROCESSOR_DEFAULT
 130 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 131
 132 /* Define this macro as a C expression for the initializer of an
 133    array of string to tell the driver program which options are
 134    defaults for this target and thus do not need to be handled
 135    specially when using `MULTILIB_OPTIONS'.
 136
 137    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 138    the target makefile fragment or if none of the options listed in
 139    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 140
 141 #undef  MULTILIB_DEFAULTS
 142 #define MULTILIB_DEFAULTS { "mcpu=common" }
 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
 177 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 178    and "cror 31,31,31" for POWER architecture.  */
 179
 180 #undef RS6000_CALL_GLUE
 181 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 182
 183 /* AIX 4.2 and above provides initialization and finalization function
 184    support from linker command line.  */
 185 #undef HAS_INIT_SECTION
 186 #define HAS_INIT_SECTION
 187
 188 #undef LD_INIT_SWITCH
 189 #define LD_INIT_SWITCH "-binitfini"
 190
 191 /* AIX 5.1 has the float and long double forms of math functions.  */
 192 #undef TARGET_C99_FUNCTIONS
 193 #define TARGET_C99_FUNCTIONS  1
 194