gcc/config/rs6000/aix52.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 POWER running AIX V5.2.
   3    Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
   4    Free Software Foundation, Inc.
   5    Contributed by David Edelsohn (edelsohn@gnu.org).
   6
   7    This file is part of GCC.
   8
   9    GCC is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published
  11    by the Free Software Foundation; either version 3, or (at your
  12    option) any later version.
  13
  14    GCC is distributed in the hope that it will be useful, but WITHOUT
  15    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  17    License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GCC; see the file COPYING3.  If not see
  21    <http://www.gnu.org/licenses/>.  */
  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_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)                      \
  46     {                                                                   \
  47       rs6000_long_double_type_size = 64;                                \
  48       if (rs6000_explicit_options.long_double)                          \
  49         warning (0, "soft-float and long-double-128 are incompatible"); \
  50     }                                                                   \
  51   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  52     {                                                                   \
  53       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  54     }                                                                   \
  55 } while (0);
  56
  57 #undef ASM_SPEC
  58 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  59
  60 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  61    for handling -mcpu=xxx switches.  */
  62 #undef ASM_CPU_SPEC
  63 #define ASM_CPU_SPEC \
  64 "%{!mcpu*: %{!maix64: \
  65   %{mpowerpc64: -mppc64} \
  66   %{!mpower64: %(asm_default)}}} \
  67 %{mcpu=power3: -m620} \
  68 %{mcpu=power4: -m620} \
  69 %{mcpu=power5: -m620} \
  70 %{mcpu=power5+: -m620} \
  71 %{mcpu=power6: -m620} \
  72 %{mcpu=power6x: -m620} \
  73 %{mcpu=powerpc: -mppc} \
  74 %{mcpu=rs64a: -mppc} \
  75 %{mcpu=603: -m603} \
  76 %{mcpu=603e: -m603} \
  77 %{mcpu=604: -m604} \
  78 %{mcpu=604e: -m604} \
  79 %{mcpu=620: -m620} \
  80 %{mcpu=630: -m620} \
  81 %{mcpu=970: -m620} \
  82 %{mcpu=G5: -m620}"
  83
  84 #undef  ASM_DEFAULT_SPEC
  85 #define ASM_DEFAULT_SPEC "-mppc"
  86
  87 #undef TARGET_OS_CPP_BUILTINS
  88 #define TARGET_OS_CPP_BUILTINS()     \
  89   do                                 \
  90     {                                \
  91       builtin_define ("_AIX43");     \
  92       builtin_define ("_AIX51");     \
  93       builtin_define ("_AIX52");     \
  94       TARGET_OS_AIX_CPP_BUILTINS (); \
  95     }                                \
  96   while (0)
  97
  98 #undef CPP_SPEC
  99 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}     \
 100   %{ansi: -D_ANSI_C_SOURCE}                     \
 101   %{maix64: -D__64BIT__}                        \
 102   %{mpe: -I/usr/lpp/ppe.poe/include}            \
 103   %{pthread: -D_THREAD_SAFE}"
 104
 105 /* The GNU C++ standard library requires that these macros be
 106    defined.  Synchronize with libstdc++ os_defines.h.  */
 107 #undef CPLUSPLUS_CPP_SPEC
 108 #define CPLUSPLUS_CPP_SPEC                      \
 109   "-D_ALL_SOURCE                                \
 110    %{maix64: -D__64BIT__}                       \
 111    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 112    %{pthread: -D_THREAD_SAFE}"
 113
 114 #undef  TARGET_DEFAULT
 115 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 116
 117 #undef  PROCESSOR_DEFAULT
 118 #define PROCESSOR_DEFAULT PROCESSOR_POWER4
 119 #undef  PROCESSOR_DEFAULT64
 120 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
 121
 122 #undef  TARGET_POWER
 123 #define TARGET_POWER 0
 124
 125 /* AIX does not support Altivec.  */
 126 #undef  TARGET_ALTIVEC
 127 #define TARGET_ALTIVEC 0
 128 #undef  TARGET_ALTIVEC_ABI
 129 #define TARGET_ALTIVEC_ABI 0
 130
 131 /* Define this macro as a C expression for the initializer of an
 132    array of string to tell the driver program which options are
 133    defaults for this target and thus do not need to be handled
 134    specially when using `MULTILIB_OPTIONS'.
 135
 136    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 137    the target makefile fragment or if none of the options listed in
 138    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 139
 140 #undef  MULTILIB_DEFAULTS
 141
 142 #undef LIB_SPEC
 143 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 144    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 145    %{!maix64:%{!shared:%{g*:-lg}}}\
 146    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 147    %{pthread:-lpthreads} -lc"
 148
 149 #undef LINK_SPEC
 150 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 151    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 152    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 153    %{mpe:-binitfini:poe_remote_main}"
 154
 155 #undef STARTFILE_SPEC
 156 #define STARTFILE_SPEC "%{!shared:\
 157    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 158    %{!maix64:\
 159      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 160      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 161
 162 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 163
 164 #undef PTRDIFF_TYPE
 165 #define PTRDIFF_TYPE "long int"
 166
 167 /* Type used for wchar_t, as a string used in a declaration.  */
 168 #undef  WCHAR_TYPE
 169 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
 170
 171 /* Width of wchar_t in bits.  */
 172 #undef  WCHAR_TYPE_SIZE
 173 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
 174
 175 /* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 176    and "cror 31,31,31" for POWER architecture.  */
 177
 178 #undef RS6000_CALL_GLUE
 179 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 180
 181 /* AIX 4.2 and above provides initialization and finalization function
 182    support from linker command line.  */
 183 #undef HAS_INIT_SECTION
 184 #define HAS_INIT_SECTION
 185
 186 #undef LD_INIT_SWITCH
 187 #define LD_INIT_SWITCH "-binitfini"
 188
 189 /* AIX 5.2 has the float and long double forms of math functions.  */
 190 #undef TARGET_C99_FUNCTIONS
 191 #define TARGET_C99_FUNCTIONS  1
 192
 193 #ifndef _AIX52
 194 extern long long int    atoll(const char *);
 195 #endif
 196
 197 /* This target uses the aix64.opt file.  */
 198 #define TARGET_USES_AIX64_OPT 1
 199
 200 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
 201    but does not have crtbegin/end.  */
 202
 203 #define TARGET_USE_JCR_SECTION 0