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 GNU CC.
   7
   8 GNU CC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU CC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23
  24 /* AIX V5 and above support 64-bit executables.  */
  25 #undef  SUBSUBTARGET_SWITCHES
  26 #define SUBSUBTARGET_SWITCHES                                   \
  27   {"aix64",             MASK_64BIT | MASK_POWERPC64 | MASK_POWERPC,     \
  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 ("-maix64 and POWER architecture are incompatible");      \
  50     }                                                                   \
  51   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  52     {                                                                   \
  53       target_flags |= MASK_POWERPC64;                                   \
  54       warning ("-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 -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   %{mpower: %{!mpower2: -mpwr}} \
  71   %{mpower2: -mpwr2} \
  72   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  73   %{mpowerpc64: -mppc64} \
  74   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  75 %{mcpu=common: -mcom} \
  76 %{mcpu=power: -mpwr} \
  77 %{mcpu=power2: -mpwr2} \
  78 %{mcpu=power3: -m604} \
  79 %{mcpu=power4: -m604} \
  80 %{mcpu=powerpc: -mppc} \
  81 %{mcpu=rios: -mpwr} \
  82 %{mcpu=rios1: -mpwr} \
  83 %{mcpu=rios2: -mpwr2} \
  84 %{mcpu=rsc: -mpwr} \
  85 %{mcpu=rsc1: -mpwr} \
  86 %{mcpu=rs64a: -mppc} \
  87 %{mcpu=601: -m601} \
  88 %{mcpu=602: -mppc} \
  89 %{mcpu=603: -m603} \
  90 %{mcpu=603e: -m603} \
  91 %{mcpu=604: -m604} \
  92 %{mcpu=604e: -m604} \
  93 %{mcpu=620: -mppc} \
  94 %{mcpu=630: -m604}"
  95
  96 #undef  ASM_DEFAULT_SPEC
  97 #define ASM_DEFAULT_SPEC "-mcom"
  98
  99 #undef TARGET_OS_CPP_BUILTINS
 100 #define TARGET_OS_CPP_BUILTINS()      \
 101   do                                  \
 102     {                                 \
 103       builtin_define ("_IBMR2");      \
 104       builtin_define ("_POWER");      \
 105       builtin_define ("_LONG_LONG");  \
 106       builtin_define ("_AIX");        \
 107       builtin_define ("_AIX32");      \
 108       builtin_define ("_AIX41");      \
 109       builtin_define ("_AIX43");      \
 110       builtin_define ("_AIX51");      \
 111       builtin_assert ("system=unix"); \
 112       builtin_assert ("system=aix");  \
 113     }                                 \
 114   while (0)
 115
 116 #undef CPP_SPEC
 117 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 118   %{ansi: -D_ANSI_C_SOURCE}                     \
 119   %{maix64: -D__64BIT__}                        \
 120   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 121   %{pthread: -D_THREAD_SAFE}"
 122
 123 /* The GNU C++ standard library requires that these macros be
 124    defined.  */
 125 #undef CPLUSPLUS_CPP_SPEC
 126 #define CPLUSPLUS_CPP_SPEC                      \
 127   "-D_XOPEN_SOURCE=500                          \
 128    -D_XOPEN_SOURCE_EXTENDED=1                   \
 129    -D_LARGE_FILE_API                            \
 130    -D_ALL_SOURCE                                \
 131    %{maix64: -D__64BIT__}                       \
 132    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 133    %{pthread: -D_THREAD_SAFE}"
 134
 135 #undef TARGET_DEFAULT
 136 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 137
 138 #undef PROCESSOR_DEFAULT
 139 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 140
 141 /* Define this macro as a C expression for the initializer of an
 142    array of string to tell the driver program which options are
 143    defaults for this target and thus do not need to be handled
 144    specially when using `MULTILIB_OPTIONS'.
 145
 146    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 147    the target makefile fragment or if none of the options listed in
 148    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 149
 150 #undef  MULTILIB_DEFAULTS
 151 #define MULTILIB_DEFAULTS { "mcpu=common" }
 152
 153 #undef LIB_SPEC
 154 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 155    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 156    %{!maix64:%{!shared:%{g*:-lg}}}\
 157    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 158    %{pthread:-lpthreads} -lc"
 159
 160 #undef LINK_SPEC
 161 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 162    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 163    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 164    %{mpe:-binitfini:poe_remote_main}"
 165
 166 #undef STARTFILE_SPEC
 167 #define STARTFILE_SPEC "%{!shared:\
 168    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 169    %{!maix64:\
 170      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 171      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 172
 173 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 174
 175 #undef PTRDIFF_TYPE
 176 #define PTRDIFF_TYPE "long int"
 177
 178 /* Type used for wchar_t, as a string used in a declaration.  */
 179 #undef  WCHAR_TYPE
 180 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 181
 182 /* Width of wchar_t in bits.  */
 183 #undef  WCHAR_TYPE_SIZE
 184 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 185 #define MAX_WCHAR_TYPE_SIZE 32
 186
 187 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 188    and "cror 31,31,31" for POWER architecture.  */
 189
 190 #undef RS6000_CALL_GLUE
 191 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 192
 193 /* AIX 4.2 and above provides initialization and finalization function
 194    support from linker command line.  */
 195 #undef HAS_INIT_SECTION
 196 #define HAS_INIT_SECTION
 197
 198 #undef LD_INIT_SWITCH
 199 #define LD_INIT_SWITCH "-binitfini"