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    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, 51 Franklin Street, Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 /* Sometimes certain combinations of command options do not make sense
  25    on a particular target machine.  You can define a macro
  26    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
  27    defined, is executed once just after all the command options have
  28    been parsed.
  29
  30    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
  31    get control.  */
  32
  33 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
  34 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
  35 do {                                                                    \
  36   if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))               \
  37     {                                                                   \
  38       target_flags &= ~NON_POWERPC_MASKS;                               \
  39       warning (0, "-maix64 and POWER architecture are incompatible");   \
  40     }                                                                   \
  41   if (TARGET_64BIT && ! TARGET_POWERPC64)                               \
  42     {                                                                   \
  43       target_flags |= MASK_POWERPC64;                                   \
  44       warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
  45     }                                                                   \
  46   if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)                      \
  47     {                                                                   \
  48       rs6000_long_double_type_size = 64;                                \
  49       if (rs6000_explicit_options.long_double)                          \
  50         warning (0, "soft-float and long-double-128 are incompatible"); \
  51     }                                                                   \
  52   if (TARGET_POWERPC64 && ! TARGET_64BIT)                               \
  53     {                                                                   \
  54       error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
  55     }                                                                   \
  56 } while (0);
  57
  58 #undef ASM_SPEC
  59 #define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
  60
  61 /* Common ASM definitions used by ASM_SPEC amongst the various targets
  62    for handling -mcpu=xxx switches.  */
  63 #undef ASM_CPU_SPEC
  64 #define ASM_CPU_SPEC \
  65 "%{!mcpu*: %{!maix64: \
  66   %{mpower: %{!mpower2: -mpwr}} \
  67   %{mpower2: -mpwr2} \
  68   %{mpowerpc*: %{!mpowerpc64: -mppc}} \
  69   %{mpowerpc64: -mppc64} \
  70   %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
  71 %{mcpu=common: -mcom} \
  72 %{mcpu=power: -mpwr} \
  73 %{mcpu=power2: -mpwr2} \
  74 %{mcpu=power3: -m620} \
  75 %{mcpu=power4: -m620} \
  76 %{mcpu=powerpc: -mppc} \
  77 %{mcpu=rios: -mpwr} \
  78 %{mcpu=rios1: -mpwr} \
  79 %{mcpu=rios2: -mpwr2} \
  80 %{mcpu=rsc: -mpwr} \
  81 %{mcpu=rsc1: -mpwr} \
  82 %{mcpu=rs64a: -mppc} \
  83 %{mcpu=601: -m601} \
  84 %{mcpu=602: -mppc} \
  85 %{mcpu=603: -m603} \
  86 %{mcpu=603e: -m603} \
  87 %{mcpu=604: -m604} \
  88 %{mcpu=604e: -m604} \
  89 %{mcpu=620: -m620} \
  90 %{mcpu=630: -m620}"
  91
  92 #undef  ASM_DEFAULT_SPEC
  93 #define ASM_DEFAULT_SPEC "-mcom"
  94
  95 #undef TARGET_OS_CPP_BUILTINS
  96 #define TARGET_OS_CPP_BUILTINS()     \
  97   do                                 \
  98     {                                \
  99       builtin_define ("_AIX43");     \
 100       TARGET_OS_AIX_CPP_BUILTINS (); \
 101     }                                \
 102   while (0)
 103
 104 #undef CPP_SPEC
 105 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\
 106    %{ansi: -D_ANSI_C_SOURCE}\
 107    %{maix64: -D__64BIT__}\
 108    %{mpe: -I/usr/lpp/ppe.poe/include}\
 109    %{pthread: -D_THREAD_SAFE}"
 110
 111 /* The GNU C++ standard library requires that these macros be
 112    defined.  */
 113 #undef CPLUSPLUS_CPP_SPEC
 114 #define CPLUSPLUS_CPP_SPEC                      \
 115   "-D_ALL_SOURCE                                \
 116    %{maix64: -D__64BIT__}                       \
 117    %{mpe: -I/usr/lpp/ppe.poe/include}           \
 118    %{pthread: -D_THREAD_SAFE}"
 119
 120 #undef TARGET_DEFAULT
 121 #define TARGET_DEFAULT MASK_NEW_MNEMONICS
 122
 123 #undef PROCESSOR_DEFAULT
 124 #define PROCESSOR_DEFAULT PROCESSOR_PPC604e
 125
 126 /* Define this macro as a C expression for the initializer of an
 127    array of string to tell the driver program which options are
 128    defaults for this target and thus do not need to be handled
 129    specially when using `MULTILIB_OPTIONS'.
 130
 131    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
 132    the target makefile fragment or if none of the options listed in
 133    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
 134
 135 #undef  MULTILIB_DEFAULTS
 136 #define MULTILIB_DEFAULTS { "mcpu=common" }
 137
 138 #undef LIB_SPEC
 139 #define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
 140    %{p:-L/lib/profiled -L/usr/lib/profiled}\
 141    %{!maix64:%{!shared:%{g*:-lg}}}\
 142    %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
 143    %{pthread:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
 144    %{!pthread:-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 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
 160
 161 #undef PTRDIFF_TYPE
 162 #define PTRDIFF_TYPE "long int"
 163
 164 /* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
 165    and "cror 31,31,31" for POWER architecture.  */
 166
 167 #undef RS6000_CALL_GLUE
 168 #define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
 169
 170 /* AIX 4.2 and above provides initialization and finalization function
 171    support from linker command line.  */
 172 #undef HAS_INIT_SECTION
 173 #define HAS_INIT_SECTION
 174
 175 #undef LD_INIT_SWITCH
 176 #define LD_INIT_SWITCH "-binitfini"
 177
 178 /* The IBM AIX 4.x assembler doesn't support forward references in
 179    .set directives.  We handle this by deferring the output of .set
 180    directives to the end of the compilation unit.  */
 181 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) true
 182
 183 /* This target uses the aix64.opt file.  */
 184 #define TARGET_USES_AIX64_OPT 1