1  /* Common configuration file for NetBSD ELF targets.
       2     Copyright (C) 2002-2023 Free Software Foundation, Inc.
       3     Contributed by Wasabi Systems, Inc.
       4  
       5  This file is part of GCC.
       6  
       7  GCC is free software; you can redistribute it and/or modify
       8  it under the terms of the GNU General Public License as published by
       9  the Free Software Foundation; either version 3, or (at your option)
      10  any later version.
      11  
      12  GCC is distributed in the hope that it will be useful,
      13  but WITHOUT ANY WARRANTY; without even the implied warranty of
      14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15  GNU General Public License for more details.
      16  
      17  You should have received a copy of the GNU General Public License
      18  along with GCC; see the file COPYING3.  If not see
      19  <http://www.gnu.org/licenses/>.  */
      20  
      21  /* TARGET_OS_CPP_BUILTINS() common to all NetBSD ELF targets.  */
      22  #define NETBSD_OS_CPP_BUILTINS_ELF()		\
      23    do						\
      24      {						\
      25        NETBSD_OS_CPP_BUILTINS_COMMON();		\
      26      }						\
      27    while (0)
      28  
      29  /* Provide a STARTFILE_SPEC appropriate for NetBSD ELF.  Here we
      30     provide support for the special GCC option -static.  On ELF
      31     targets, we also add the crtbegin.o file, which provides part
      32     of the support for getting C++ file-scope static objects
      33     constructed before entering "main".  */
      34  
      35  #define NETBSD_STARTFILE_SPEC	\
      36    "%{!shared:			\
      37       %{pg:gcrt0%O%s}		\
      38       %{!pg:			\
      39         %{p:gcrt0%O%s}		\
      40         %{!p:crt0%O%s}}}		\
      41     %:if-exists(crti%O%s)	\
      42     %{static:%:if-exists-else(crtbeginT%O%s crtbegin%O%s)} \
      43     %{!static:                   \
      44       %{!shared:                 \
      45         %{!pie:crtbegin%O%s}     \
      46         %{pie:crtbeginS%O%s}}    \
      47       %{shared:crtbeginS%O%s}}"
      48  
      49  #undef STARTFILE_SPEC
      50  #define STARTFILE_SPEC NETBSD_STARTFILE_SPEC
      51  
      52  
      53  /* Provide an ENDFILE_SPEC appropriate for NetBSD ELF.  Here we
      54     add crtend.o, which provides part of the support for getting
      55     C++ file-scope static objects deconstructed after exiting "main".  */
      56  
      57  #define NETBSD_ENDFILE_SPEC	\
      58    "%{!shared:                   \
      59      %{!pie:crtend%O%s}          \
      60      %{pie:crtendS%O%s}}         \
      61     %{shared:crtendS%O%s}        \
      62     %:if-exists(crtn%O%s)"
      63  
      64  #undef ENDFILE_SPEC
      65  #define ENDFILE_SPEC NETBSD_ENDFILE_SPEC
      66  
      67  /* Provide a LINK_SPEC appropriate for NetBSD ELF.  Here we provide
      68     support for the special GCC options -assert, -R, -rpath, -shared,
      69     -nostdlib, -static, -rdynamic, and -dynamic-linker.
      70  
      71     Target-specific code can use this in conjunction with any other
      72     target-specific LINK_SPEC options.
      73  
      74     Target-specific code must provide the %(netbsd_entry_point) spec.  */
      75  
      76  #define NETBSD_LINK_LD_ELF_SO_SPEC \
      77    "%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}"
      78  
      79  #define NETBSD_LINK_SPEC_ELF \
      80    "%{assert*} %{R*} %{rpath*} \
      81     %{shared:-shared} \
      82     %{symbolic:-Bsymbolic} \
      83     %{!shared: \
      84       -dc -dp \
      85       %{!nostdlib: \
      86         %{!r: \
      87  	 %{!e*:-e %(netbsd_entry_point)}}} \
      88       %{!static: \
      89         %{rdynamic:-export-dynamic} \
      90         -dynamic-linker /usr/libexec/ld.elf_so} \
      91       %{static:-static}}"
      92  
      93  /* Provide the standard list of subtarget extra specs for NetBSD targets.  */
      94  #define NETBSD_SUBTARGET_EXTRA_SPECS \
      95    { "netbsd_link_ld_elf_so",    NETBSD_LINK_LD_ELF_SO_SPEC }, \
      96    { "netbsd_cpp_spec",          NETBSD_CPP_SPEC }, \
      97    { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF }, \
      98    { "netbsd_entry_point",       NETBSD_ENTRY_POINT }, \
      99    { "netbsd_endfile_spec",      NETBSD_ENDFILE_SPEC },
     100  
     101  #undef SUBTARGET_EXTRA_SPECS
     102  #define SUBTARGET_EXTRA_SPECS   NETBSD_SUBTARGET_EXTRA_SPECS
     103  
     104  /* Use --as-needed -lgcc_s for eh support.  */
     105  #ifdef HAVE_LD_AS_NEEDED
     106  #define USE_LD_AS_NEEDED 1
     107  #endif