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 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 ("_AIX43");     \
 103       builtin_define ("_AIX51");     \
 104       TARGET_OS_AIX_CPP_BUILTINS (); \
 105     }                                \
 106   while (0)
 107
 108 #undef CPP_SPEC
 109 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 110   %{ansi: -D_ANSI_C_SOURCE}                     \
 111   %{maix64: -D__64BIT__}                        \
 112   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 113   %{pthread: -D_THREAD_SAFE}"
 114
 115 /* The GNU C++ standard library requires that these macros be
 116    defined.  */
 117 #undef CPLUSPLUS_CPP_SPEC
 118 #define CPLUSPLUS_CPP_SPEC                      \
 119   "-D_XOPEN_SOURCE=500                          \
 120    -D_XOPEN_SOURCE_EXTENDED=1                   \
 121    -D_LARGE_FILE_API                            \
 122    -D_ALL_SOURCE                                \
 123    %{maix64: -D__64BIT__}                       \
 124    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 125    %{pthread: -D_THREAD_SAFE}"
 126
 127 #undef TARGET_DEFAULT
 128 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 129
 130 #undef PROCESSOR_DEFAULT
 131 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 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 #define MULTILIB_DEFAULTS { "mcpu=common" }
 144
 145 #undef LIB_SPEC
 146 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 147    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 148    %{!maix64:%{!shared:%{g*:-lg}}}\
 149    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 150    %{pthread:-lpthreads} -lc"
 151
 152 #undef LINK_SPEC
 153 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 154    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 155    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 156    %{mpe:-binitfini:poe_remote_main}"
 157
 158 #undef STARTFILE_SPEC
 159 #define STARTFILE_SPEC "%{!shared:\
 160    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 161    %{!maix64:\
 162      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 163      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 164
 165 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 166
 167 #undef PTRDIFF_TYPE
 168 #define PTRDIFF_TYPE "long int"
 169
 170 /* Type used for wchar_t, as a string used in a declaration.  */
 171 #undef  WCHAR_TYPE
 172 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 173
 174 /* Width of wchar_t in bits.  */
 175 #undef  WCHAR_TYPE_SIZE
 176 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 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"
 191
 192 /* AIX 5.1 has the float and long double forms of math functions.  */
 193 #undef TARGET_C99_FUNCTIONS
 194 #define TARGET_C99_FUNCTIONS  1
 195