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 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 amonst 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 CPP_PREDEFINES
 100 #define CPP_PREDEFINES "-D_IBMR2 -D_POWER -D_LONG_LONG \
 101 -D_AIX -D_AIX32 -D_AIX41 -D_AIX43 -D_AIX51 -Asystem=unix -Asystem=aix"
 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_NEW_MNEMONICS
 124
 125 #undef PROCESSOR_DEFAULT
 126 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 127
 128 /* Define this macro as a C expression for the initializer of an
 129    array of string to tell the driver program which options are
 130    defaults for this target and thus do not need to be handled
 131    specially when using `MULTILIB_OPTIONS'.
 132
 133    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 134    the target makefile fragment or if none of the options listed in
 135    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 136
 137 #undef  MULTILIB_DEFAULTS
 138 #define MULTILIB_DEFAULTS { "mcpu=common" }
 139
 140 #undef LIB_SPEC
 141 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 142    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 143    %{!maix64:%{!shared:%{g*:-lg}}}\
 144    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 145    %{pthread:-lpthreads} -lc"
 146
 147 #undef LINK_SPEC
 148 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 149    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 150    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 151    %{mpe:-binitfini:poe_remote_main}"
 152
 153 #undef STARTFILE_SPEC
 154 #define STARTFILE_SPEC "%{!shared:\
 155    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 156    %{!maix64:\
 157      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 158      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 159
 160 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 161
 162 #undef PTRDIFF_TYPE
 163 #define PTRDIFF_TYPE "long int"
 164
 165 /* Type used for wchar_t, as a string used in a declaration.  */
 166 #undef  WCHAR_TYPE
 167 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 168
 169 /* Width of wchar_t in bits.  */
 170 #undef  WCHAR_TYPE_SIZE
 171 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 172 #define MAX_WCHAR_TYPE_SIZE 32
 173
 174 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 175    and "cror 31,31,31" for POWER architecture.  */
 176
 177 #undef RS6000_CALL_GLUE
 178 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 179
 180 /* AIX 4.2 and above provides initialization and finalization function
 181    support from linker command line.  */
 182 #undef HAS_INIT_SECTION
 183 #define HAS_INIT_SECTION
 184
 185 #undef LD_INIT_SWITCH
 186 #define LD_INIT_SWITCH "-binitfini"