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/* Operating system specific defines to be used when targeting GCC for

   Sequent's Dynix/ptx v4 and later.

   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2007

   Free Software Foundation, Inc.

   Generic SysV4 file Contributed by Ron Guilmette (rfg@monkeys.com).

   Renamed and changed to suit Dynix/ptx v4 and later.

   Modified by Tim Wright (timw@sequent.com).

   Modified by Janis Johnson (janis@us.ibm.com).

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.

*/

/* Define a symbol indicating that we are using svr4.h.  */

#define USING_SVR4_H

/* Use DWARF 2 debugging info by default.  */

#undef PREFERRED_DEBUGGING_TYPE

#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

#define DWARF2_DEBUGGING_INFO 1

/* Cpp, assembler, linker, library, and startfile spec's.  */

/* This defines which switch letters take arguments.  On svr4, most of

   the normal cases (defined in gcc.c) apply, and we also have -h* and

   -z* options (for the linker).  Note however that there is no such

   thing as a -T option for svr4.  */

#define SWITCH_TAKES_ARG(CHAR) \

  (   (CHAR) == 'D' \

   || (CHAR) == 'U' \

   || (CHAR) == 'o' \

   || (CHAR) == 'e' \

   || (CHAR) == 'u' \

   || (CHAR) == 'I' \

   || (CHAR) == 'm' \

   || (CHAR) == 'L' \

   || (CHAR) == 'A' \

   || (CHAR) == 'h' \

   || (CHAR) == 'z')

/* This defines which multi-letter switches take arguments.  On svr4,

   there are no such switches except those implemented by GCC itself.  */

#define WORD_SWITCH_TAKES_ARG(STR)                      \

 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                   \

  && strcmp (STR, "Tdata") && strcmp (STR, "Ttext")     \

  && strcmp (STR, "Tbss"))

/* Provide an ASM_SPEC appropriate for svr4.  Here we try to support as

   many of the specialized svr4 assembler options as seems reasonable,

   given that there are certain options which we can't (or shouldn't)

   support directly due to the fact that they conflict with other options

   for other svr4 tools (e.g. ld) or with other options for GCC itself.

   For example, we don't support the -o (output file) or -R (remove

   input file) options because GCC already handles these things.  We

   also don't support the -m (run m4) option for the assembler because

   that conflicts with the -m (produce load map) option of the svr4

   linker.  We do however allow passing arbitrary options to the svr4

   assembler via the -Wa, option.

   Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*

   option.

*/

#undef ASM_SPEC

#ifdef USE_GAS

#define ASM_SPEC \

  "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"

#else

#define ASM_SPEC \

  "-no_0f_fix -no_eflags_chk %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"

#endif

#define AS_NEEDS_DASH_FOR_PIPED_INPUT

/* Provide a LIB_SPEC appropriate for svr4.  Here we tack on the default

   standard C library (unless we are building a shared library).  */

#undef  LIB_SPEC

#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"

/* Provide a LIBGCC_SPEC appropriate for svr4.  We also want to exclude

   libgcc when -symbolic.  */

#undef  LIBGCC_SPEC

#define LIBGCC_SPEC "%{!shared:%{!symbolic:-lgcc}}"

/* Provide an ENDFILE_SPEC appropriate for svr4.  Here we tack on our own

   magical crtend.o file (see crtstuff.c) which provides part of the

   support for getting C++ file-scope static object constructed before

   entering `main', followed by the normal svr3/svr4 "finalizer" file,

   which is either `gcrtn.o' or `crtn.o'.  */

#undef  ENDFILE_SPEC

#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:crtn.o%s}"

/* Provide a LINK_SPEC appropriate for svr4.  Here we provide support

   for the special GCC options -static, -shared, and -symbolic which

   allow us to link things in one of these three modes by applying the

   appropriate combinations of options at link-time.  We also provide

   support here for as many of the other svr4 linker options as seems

   reasonable, given that some of them conflict with options for other

   svr4 tools (e.g. the assembler).  In particular, we do support the

   -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*,

   -l*, -o*, -r, -s, -u*, and -L* options are directly supported

   by gcc.c itself.  We don't directly support the -m (generate load

   map) option because that conflicts with the -m (run m4) option of

   the svr4 assembler.  We also don't directly support the svr4 linker's

   -I* or -M* options because these conflict with existing GCC options.

   We do however allow passing arbitrary options to the svr4 linker

   via the -Wl, option.  We don't support the svr4 linker's -a option

   at all because it is totally useless and because it conflicts with

   GCC's own -a option.

   Note that gcc doesn't allow a space to follow -Y in a -YP,* option.

   When the -G link option is used (-shared and -symbolic) a final link is

   not being done.  */

#undef  LINK_SPEC

#define LINK_SPEC "%{h*} %{v:-V} \

                   %{b} \

                   %{static:-dn -Bstatic} \

                   %{shared:-G -dy -z text} \

                   %{symbolic:-Bsymbolic -G -dy -z text} \

                   %{G:-G} \

                   %{YP,*} \

                   %{!YP,*:%{p:-Y P,/lib/libp:/usr/lib/libp:/lib:/usr/lib} \

                    %{!p:-Y P,/lib:/usr/lib}} \

                   %{Qy:} %{!Qn:-Qy}"

/* Gcc automatically adds in one of the files /lib/values-Xc.o

   or /lib/values-Xa.o, for each final link step (depending upon the other

   gcc options selected, such as -ansi).  These files each contain one

   (initialized) copy of a special variable called `_lib_version'.  Each

   one of these files has `_lib_version' initialized to a different (enum)

   value.  The SVR4 library routines query the value of `_lib_version'

   at run to decide how they should behave.  Specifically, they decide

   (based upon the value of `_lib_version') if they will act in a strictly

   ANSI conforming manner or not.

*/

#undef  STARTFILE_SPEC

#define STARTFILE_SPEC "%{!shared: \

                         %{!symbolic: \

                          %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\

                        %{pg:gcrti.o%s}%{!pg:crti.o%s} \

                        %{ansi:values-Xc.o%s} \

                        %{!ansi:values-Xa.o%s} \

                        crtbegin.o%s"

/* Don't use bcopy, which doesn't handle overlaps before DYNIX/ptx 4.6.  */

#undef HAVE_BCOPY

/* The numbers used to denote specific machine registers in the System V

   Release 4 DWARF debugging information are quite likely to be totally

   different from the numbers used in BSD stabs debugging information

   for the same kind of target machine.  Thus, we undefine the macro

   DBX_REGISTER_NUMBER here as an extra inducement to get people to

   provide proper machine-specific definitions of DBX_REGISTER_NUMBER

   (which is also used to provide DWARF registers numbers in dwarfout.c)

   in their tm.h files which include this file.  */

#undef DBX_REGISTER_NUMBER

/* Like block addresses, stabs line numbers are relative to the

   current function.  */

#define DBX_LINES_FUNCTION_RELATIVE 1

/* Generate a blank trailing N_SO to mark the end of the .o file, since

   we can't depend upon the linker to mark .o file boundaries with

   embedded stabs.  */

#define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END

/* Define the actual types of some ANSI-mandated types.  (These

   definitions should work for most SVR4 systems).  */

#undef SIZE_TYPE

#define SIZE_TYPE "unsigned int"

#undef PTRDIFF_TYPE

#define PTRDIFF_TYPE "int"

#undef WCHAR_TYPE

#define WCHAR_TYPE "long int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE BITS_PER_WORD

/* This says how to output assembler code to declare an uninitialized

   external linkage data item.  There's a bug in the DYNIX/ptx linker

   (PR 254649) when the alignment for such an object is specified, so

   ignore the ALIGN parameter.  */

#undef ASM_OUTPUT_ALIGNED_COMMON

#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \

do {                                                                    \

  fprintf ((FILE), "%s", COMMON_ASM_OP);                                \

  assemble_name ((FILE), (NAME));                                       \

  fprintf ((FILE), ",%lu\n", (unsigned long)(SIZE)); \

} while (0)