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, 51 Franklin Street, Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 /* Sometimes certain combinations of command options do not make sense
  24    on a particular target machine.  You can define a macro
  25    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
  26    defined, is executed once just after all the command options have
  27    been parsed.
  28
  29    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  30    get control.  */
  31
  32 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
  33 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  34 do {                                                                    \
  35   if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))               \
  36     {                                                                   \
  37       target_flags &= ~NON_POWERPC_MASKS;                               \
  38       warning (0, "-maix64 and POWER architecture are incompatible");   \
  39     }                                                                   \
  40   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  41     {                                                                   \
  42       target_flags |= MASK_POWERPC64;                                   \
  43       warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
  44     }                                                                   \
  45   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  46     {                                                                   \
  47       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  48     }                                                                   \
  49 } while (0);
  50
  51 #undef ASM_SPEC
  52 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  53
  54 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  55    for handling -mcpu=xxx switches.  */
  56 #undef ASM_CPU_SPEC
  57 #define ASM_CPU_SPEC \
  58 "%{!mcpu*: %{!maix64: \
  59   %{mpower: %{!mpower2: -mpwr}} \
  60   %{mpower2: -mpwr2} \
  61   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  62   %{mpowerpc64: -mppc64} \
  63   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  64 %{mcpu=common: -mcom} \
  65 %{mcpu=power: -mpwr} \
  66 %{mcpu=power2: -mpwr2} \
  67 %{mcpu=power3: -m620} \
  68 %{mcpu=power4: -m620} \
  69 %{mcpu=powerpc: -mppc} \
  70 %{mcpu=rios: -mpwr} \
  71 %{mcpu=rios1: -mpwr} \
  72 %{mcpu=rios2: -mpwr2} \
  73 %{mcpu=rsc: -mpwr} \
  74 %{mcpu=rsc1: -mpwr} \
  75 %{mcpu=rs64a: -mppc} \
  76 %{mcpu=601: -m601} \
  77 %{mcpu=602: -mppc} \
  78 %{mcpu=603: -m603} \
  79 %{mcpu=603e: -m603} \
  80 %{mcpu=604: -m604} \
  81 %{mcpu=604e: -m604} \
  82 %{mcpu=620: -m620} \
  83 %{mcpu=630: -m620} \
  84 %{mcpu=970: -m620} \
  85 %{mcpu=G5: -m620}"
  86
  87 #undef  ASM_DEFAULT_SPEC
  88 #define ASM_DEFAULT_SPEC "-mcom"
  89
  90 #undef TARGET_OS_CPP_BUILTINS
  91 #define TARGET_OS_CPP_BUILTINS()     \
  92   do                                 \
  93     {                                \
  94       builtin_define ("_AIX43");     \
  95       builtin_define ("_AIX51");     \
  96       TARGET_OS_AIX_CPP_BUILTINS (); \
  97     }                                \
  98   while (0)
  99
 100 #undef CPP_SPEC
 101 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 102   %{ansi: -D_ANSI_C_SOURCE}                     \
 103   %{maix64: -D__64BIT__}                        \
 104   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 105   %{pthread: -D_THREAD_SAFE}"
 106
 107 /* The GNU C++ standard library requires that these macros be
 108    defined.  */
 109 #undef CPLUSPLUS_CPP_SPEC
 110 #define CPLUSPLUS_CPP_SPEC                      \
 111   "-D_ALL_SOURCE                                \
 112    %{maix64: -D__64BIT__}                       \
 113    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 114    %{pthread: -D_THREAD_SAFE}"
 115
 116 #undef TARGET_DEFAULT
 117 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 118
 119 #undef PROCESSOR_DEFAULT
 120 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 121
 122 /* Define this macro as a C expression for the initializer of an
 123    array of string to tell the driver program which options are
 124    defaults for this target and thus do not need to be handled
 125    specially when using `MULTILIB_OPTIONS'.
 126
 127    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 128    the target makefile fragment or if none of the options listed in
 129    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 130
 131 #undef  MULTILIB_DEFAULTS
 132 #define MULTILIB_DEFAULTS { "mcpu=common" }
 133
 134 #undef LIB_SPEC
 135 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 136    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 137    %{!maix64:%{!shared:%{g*:-lg}}}\
 138    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 139    %{pthread:-lpthreads} -lc"
 140
 141 #undef LINK_SPEC
 142 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 143    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 144    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 145    %{mpe:-binitfini:poe_remote_main}"
 146
 147 #undef STARTFILE_SPEC
 148 #define STARTFILE_SPEC "%{!shared:\
 149    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 150    %{!maix64:\
 151      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 152      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 153
 154 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 155
 156 #undef PTRDIFF_TYPE
 157 #define PTRDIFF_TYPE "long int"
 158
 159 /* Type used for wchar_t, as a string used in a declaration.  */
 160 #undef  WCHAR_TYPE
 161 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 162
 163 /* Width of wchar_t in bits.  */
 164 #undef  WCHAR_TYPE_SIZE
 165 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 166
 167 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 168    and "cror 31,31,31" for POWER architecture.  */
 169
 170 #undef RS6000_CALL_GLUE
 171 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 172
 173 /* AIX 4.2 and above provides initialization and finalization function
 174    support from linker command line.  */
 175 #undef HAS_INIT_SECTION
 176 #define HAS_INIT_SECTION
 177
 178 #undef LD_INIT_SWITCH
 179 #define LD_INIT_SWITCH "-binitfini"
 180
 181 /* This target uses the aix64.opt file.  */
 182 #define TARGET_USES_AIX64_OPT 1