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
   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 2, 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 COPYING.  If not, write to the
  21    Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  22    MA 02111-1307, USA.  */
  23
  24 /* AIX 4.3 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 %{!mcpu*:-mppc64}} %(asm_cpu)"
  64
  65 /* Common ASM definitions used by ASM_SPEC amongst 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: -m620} \
  79 %{mcpu=power4: -m620} \
  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: -m620} \
  94 %{mcpu=630: -m620}"
  95
  96 #undef  ASM_DEFAULT_SPEC
  97 #define ASM_DEFAULT_SPEC "-mcom"
  98
  99 #undef TARGET_OS_CPP_BUILTINS
 100 #define TARGET_OS_CPP_BUILTINS()     \
 101   do                                 \
 102     {                                \
 103       builtin_define ("_AIX43");     \
 104       TARGET_OS_AIX_CPP_BUILTINS (); \
 105     }                                \
 106   while (0)
 107
 108 #undef CPP_SPEC
 109 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\
 110    %{ansi: -D_ANSI_C_SOURCE}\
 111    %{maix64: -D__64BIT__}\
 112    %{mpe: -I/usr/lpp/ppe.poe/include}\
 113    %{pthread: -D_THREAD_SAFE}"
 114
 115 /* The GNU C++ standard library requires that these macros be
 116    defined.  */
 117 #undef CPLUSPLUS_CPP_SPEC
 118 #define CPLUSPLUS_CPP_SPEC                      \
 119   "-D_ALL_SOURCE                                \
 120    %{maix64: -D__64BIT__}                       \
 121    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 122    %{pthread: -D_THREAD_SAFE}"
 123
 124 #undef TARGET_DEFAULT
 125 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 126
 127 #undef PROCESSOR_DEFAULT
 128 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 129
 130 /* Define this macro as a C expression for the initializer of an
 131    array of string to tell the driver program which options are
 132    defaults for this target and thus do not need to be handled
 133    specially when using `MULTILIB_OPTIONS'.
 134
 135    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 136    the target makefile fragment or if none of the options listed in
 137    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 138
 139 #undef  MULTILIB_DEFAULTS
 140 #define MULTILIB_DEFAULTS { "mcpu=common" }
 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:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
 148    %{!pthread:-lc}"
 149
 150 #undef LINK_SPEC
 151 #define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
 152    %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
 153    %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
 154    %{mpe:-binitfini:poe_remote_main}"
 155
 156 #undef STARTFILE_SPEC
 157 #define STARTFILE_SPEC "%{!shared:\
 158    %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
 159    %{!maix64:\
 160      %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
 161      %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
 162
 163 /* AIX 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 164
 165 #undef PTRDIFF_TYPE
 166 #define PTRDIFF_TYPE "long int"
 167
 168 /* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 169    and "cror 31,31,31" for POWER architecture.  */
 170
 171 #undef RS6000_CALL_GLUE
 172 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 173
 174 /* AIX 4.2 and above provides initialization and finalization function
 175    support from linker command line.  */
 176 #undef HAS_INIT_SECTION
 177 #define HAS_INIT_SECTION
 178
 179 #undef LD_INIT_SWITCH
 180 #define LD_INIT_SWITCH "-binitfini"
 181
 182 /* The IBM AIX 4.x assembler doesn't support forward references in
 183    .set directives.  We handle this by deferring the output of .set
 184    directives to the end of the compilation unit.  */
 185 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) true