gcc/config/rs6000/aix43.h

   1 /* Definitions of target machine for GNU compiler,
   2    for IBM RS/6000 POWER running AIX version 4.3.
   3    Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
   4    2007 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   %{mpower: %{!mpower2: -mpwr}} \
  66   %{mpower2: -mpwr2} \
  67   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  68   %{mpowerpc64: -mppc64} \
  69   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  70 %{mcpu=common: -mcom} \
  71 %{mcpu=power: -mpwr} \
  72 %{mcpu=power2: -mpwr2} \
  73 %{mcpu=power3: -m620} \
  74 %{mcpu=power4: -m620} \
  75 %{mcpu=powerpc: -mppc} \
  76 %{mcpu=rios: -mpwr} \
  77 %{mcpu=rios1: -mpwr} \
  78 %{mcpu=rios2: -mpwr2} \
  79 %{mcpu=rsc: -mpwr} \
  80 %{mcpu=rsc1: -mpwr} \
  81 %{mcpu=rs64a: -mppc} \
  82 %{mcpu=601: -m601} \
  83 %{mcpu=602: -mppc} \
  84 %{mcpu=603: -m603} \
  85 %{mcpu=603e: -m603} \
  86 %{mcpu=604: -m604} \
  87 %{mcpu=604e: -m604} \
  88 %{mcpu=620: -m620} \
  89 %{mcpu=630: -m620}"
  90
  91 #undef  ASM_DEFAULT_SPEC
  92 #define ASM_DEFAULT_SPEC "-mcom"
  93
  94 #undef TARGET_OS_CPP_BUILTINS
  95 #define TARGET_OS_CPP_BUILTINS()     \
  96   do                                 \
  97     {                                \
  98       builtin_define ("_AIX43");     \
  99       TARGET_OS_AIX_CPP_BUILTINS (); \
 100     }                                \
 101   while (0)
 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_ALL_SOURCE                                \
 115    %{maix64: -D__64BIT__}                       \
 116    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 117    %{pthread: -D_THREAD_SAFE}"
 118
 119 #undef TARGET_DEFAULT
 120 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 121
 122 #undef PROCESSOR_DEFAULT
 123 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 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 #define MULTILIB_DEFAULTS { "mcpu=common" }
 142
 143 #undef LIB_SPEC
 144 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 145    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 146    %{!maix64:%{!shared:%{g*:-lg}}}\
 147    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 148    %{pthread:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
 149    %{!pthread:-lc}"
 150
 151 #undef LINK_SPEC
 152 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 153    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 154    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 155    %{mpe:-binitfini:poe_remote_main}"
 156
 157 #undef STARTFILE_SPEC
 158 #define STARTFILE_SPEC "%{!shared:\
 159    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 160    %{!maix64:\
 161      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 162      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 163
 164 /* AIX 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 165
 166 #undef PTRDIFF_TYPE
 167 #define PTRDIFF_TYPE "long int"
 168
 169 /* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 170    and "cror 31,31,31" for POWER architecture.  */
 171
 172 #undef RS6000_CALL_GLUE
 173 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 174
 175 /* AIX 4.2 and above provides initialization and finalization function
 176    support from linker command line.  */
 177 #undef HAS_INIT_SECTION
 178 #define HAS_INIT_SECTION
 179
 180 #undef LD_INIT_SWITCH
 181 #define LD_INIT_SWITCH "-binitfini"
 182
 183 /* The IBM AIX 4.x assembler doesn't support forward references in
 184    .set directives.  We handle this by deferring the output of .set
 185    directives to the end of the compilation unit.  */
 186 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) true
 187
 188 /* This target uses the aix64.opt file.  */
 189 #define TARGET_USES_AIX64_OPT 1