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, 2007 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 3, 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 COPYING3.  If not see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 /* Sometimes certain combinations of command options do not make sense
  23    on a particular target machine.  You can define a macro
  24    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
  25    defined, is executed once just after all the command options have
  26    been parsed.
  27
  28    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  29    get control.  */
  30
  31 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
  32 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  33 do {                                                                    \
  34   if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))               \
  35     {                                                                   \
  36       target_flags &= ~NON_POWERPC_MASKS;                               \
  37       warning (0, "-maix64 and POWER architecture are incompatible");   \
  38     }                                                                   \
  39   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  40     {                                                                   \
  41       target_flags |= MASK_POWERPC64;                                   \
  42       warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
  43     }                                                                   \
  44   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  45     {                                                                   \
  46       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  47     }                                                                   \
  48 } while (0);
  49
  50 #undef ASM_SPEC
  51 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  52
  53 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  54    for handling -mcpu=xxx switches.  */
  55 #undef ASM_CPU_SPEC
  56 #define ASM_CPU_SPEC \
  57 "%{!mcpu*: %{!maix64: \
  58   %{mpower: %{!mpower2: -mpwr}} \
  59   %{mpower2: -mpwr2} \
  60   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  61   %{mpowerpc64: -mppc64} \
  62   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  63 %{mcpu=common: -mcom} \
  64 %{mcpu=power: -mpwr} \
  65 %{mcpu=power2: -mpwr2} \
  66 %{mcpu=power3: -m620} \
  67 %{mcpu=power4: -m620} \
  68 %{mcpu=powerpc: -mppc} \
  69 %{mcpu=rios: -mpwr} \
  70 %{mcpu=rios1: -mpwr} \
  71 %{mcpu=rios2: -mpwr2} \
  72 %{mcpu=rsc: -mpwr} \
  73 %{mcpu=rsc1: -mpwr} \
  74 %{mcpu=rs64a: -mppc} \
  75 %{mcpu=601: -m601} \
  76 %{mcpu=602: -mppc} \
  77 %{mcpu=603: -m603} \
  78 %{mcpu=603e: -m603} \
  79 %{mcpu=604: -m604} \
  80 %{mcpu=604e: -m604} \
  81 %{mcpu=620: -m620} \
  82 %{mcpu=630: -m620} \
  83 %{mcpu=970: -m620} \
  84 %{mcpu=G5: -m620}"
  85
  86 #undef  ASM_DEFAULT_SPEC
  87 #define ASM_DEFAULT_SPEC "-mcom"
  88
  89 #undef TARGET_OS_CPP_BUILTINS
  90 #define TARGET_OS_CPP_BUILTINS()     \
  91   do                                 \
  92     {                                \
  93       builtin_define ("_AIX43");     \
  94       builtin_define ("_AIX51");     \
  95       TARGET_OS_AIX_CPP_BUILTINS (); \
  96     }                                \
  97   while (0)
  98
  99 #undef CPP_SPEC
 100 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 101   %{ansi: -D_ANSI_C_SOURCE}                     \
 102   %{maix64: -D__64BIT__}                        \
 103   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 104   %{pthread: -D_THREAD_SAFE}"
 105
 106 /* The GNU C++ standard library requires that these macros be
 107    defined.  */
 108 #undef CPLUSPLUS_CPP_SPEC
 109 #define CPLUSPLUS_CPP_SPEC                      \
 110   "-D_ALL_SOURCE                                \
 111    %{maix64: -D__64BIT__}                       \
 112    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 113    %{pthread: -D_THREAD_SAFE}"
 114
 115 #undef TARGET_DEFAULT
 116 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 117
 118 #undef PROCESSOR_DEFAULT
 119 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 120
 121 /* AIX does not support Altivec.  */
 122 #undef  TARGET_ALTIVEC
 123 #define TARGET_ALTIVEC 0
 124 #undef  TARGET_ALTIVEC_ABI
 125 #define TARGET_ALTIVEC_ABI 0
 126
 127 /* Define this macro as a C expression for the initializer of an
 128    array of string to tell the driver program which options are
 129    defaults for this target and thus do not need to be handled
 130    specially when using `MULTILIB_OPTIONS'.
 131
 132    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 133    the target makefile fragment or if none of the options listed in
 134    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 135
 136 #undef  MULTILIB_DEFAULTS
 137 #define MULTILIB_DEFAULTS { "mcpu=common" }
 138
 139 #undef LIB_SPEC
 140 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 141    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 142    %{!maix64:%{!shared:%{g*:-lg}}}\
 143    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 144    %{pthread:-lpthreads} -lc"
 145
 146 #undef LINK_SPEC
 147 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 148    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 149    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 150    %{mpe:-binitfini:poe_remote_main}"
 151
 152 #undef STARTFILE_SPEC
 153 #define STARTFILE_SPEC "%{!shared:\
 154    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 155    %{!maix64:\
 156      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 157      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 158
 159 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 160
 161 #undef PTRDIFF_TYPE
 162 #define PTRDIFF_TYPE "long int"
 163
 164 /* Type used for wchar_t, as a string used in a declaration.  */
 165 #undef  WCHAR_TYPE
 166 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 167
 168 /* Width of wchar_t in bits.  */
 169 #undef  WCHAR_TYPE_SIZE
 170 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 171
 172 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 173    and "cror 31,31,31" for POWER architecture.  */
 174
 175 #undef RS6000_CALL_GLUE
 176 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 177
 178 /* AIX 4.2 and above provides initialization and finalization function
 179    support from linker command line.  */
 180 #undef HAS_INIT_SECTION
 181 #define HAS_INIT_SECTION
 182
 183 #undef LD_INIT_SWITCH
 184 #define LD_INIT_SWITCH "-binitfini"
 185
 186 /* This target uses the aix64.opt file.  */
 187 #define TARGET_USES_AIX64_OPT 1