1  /* Definitions of default options for config/rs6000 configurations.
       2     Copyright (C) 1992-2023 Free Software Foundation, Inc.
       3  
       4     This file is part of GCC.
       5  
       6     GCC is free software; you can redistribute it and/or modify it
       7     under the terms of the GNU General Public License as published
       8     by the Free Software Foundation; either version 3, or (at your
       9     option) any later version.
      10  
      11     GCC is distributed in the hope that it will be useful, but WITHOUT
      12     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      13     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
      14     License for more details.
      15  
      16     Under Section 7 of GPL version 3, you are granted additional
      17     permissions described in the GCC Runtime Library Exception, version
      18     3.1, as published by the Free Software Foundation.
      19  
      20     You should have received a copy of the GNU General Public License and
      21     a copy of the GCC Runtime Library Exception along with this program;
      22     see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23     <http://www.gnu.org/licenses/>.  */
      24  
      25  /* This header needs to be included after any other headers affecting
      26     TARGET_DEFAULT.  */
      27  
      28  #if TARGET_AIX_OS
      29  #define OPT_64 "maix64"
      30  #define OPT_32 "maix32"
      31  #else
      32  #define OPT_64 "m64"
      33  #define OPT_32 "m32"
      34  #endif
      35  
      36  #ifndef OPTION_MASK_64BIT
      37  #define OPTION_MASK_64BIT 0
      38  #define MASK_64BIT 0
      39  #endif
      40  
      41  #if TARGET_DEFAULT & OPTION_MASK_64BIT
      42  #define OPT_ARCH64 "!" OPT_32
      43  #define OPT_ARCH32 OPT_32
      44  #else
      45  #define OPT_ARCH64 OPT_64
      46  #define OPT_ARCH32 "!" OPT_64
      47  #endif
      48  
      49  /* Support for a compile-time default CPU, et cetera.  The rules are:
      50     --with-cpu is ignored if -mcpu is specified; likewise --with-cpu-32
      51       and --with-cpu-64.
      52     --with-tune is ignored if -mtune or -mcpu is specified; likewise
      53       --with-tune-32 and --with-tune-64.
      54     --with-float is ignored if -mhard-float or -msoft-float are
      55       specified.  */
      56  #define OPTION_DEFAULT_SPECS \
      57    {"abi", "%{!mabi=elfv*:-mabi=%(VALUE)}" }, \
      58    {"tune", "%{!mtune=*:%{!mcpu=*:-mtune=%(VALUE)}}" }, \
      59    {"tune_32", "%{" OPT_ARCH32 ":%{!mtune=*:%{!mcpu=*:-mtune=%(VALUE)}}}" }, \
      60    {"tune_64", "%{" OPT_ARCH64 ":%{!mtune=*:%{!mcpu=*:-mtune=%(VALUE)}}}" }, \
      61    {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \
      62    {"cpu_32", "%{" OPT_ARCH32 ":%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
      63    {"cpu_64", "%{" OPT_ARCH64 ":%{!mcpu=*:-mcpu=%(VALUE)}}" }, \
      64    {"float", "%{!msoft-float:%{!mhard-float:-m%(VALUE)-float}}" }
      65  
      66  /* rs6000.md uses OPTION_GLIBC unconditionally, while it is defined only in
      67     linux{,64}.h.  Define fallback for other targets here.  */
      68  #ifndef OPTION_GLIBC
      69  #define OPTION_GLIBC 0
      70  #endif