llvm-gcc-4.0/gcc/config/ptx4.h - llvm-archive - Git at Google

 /* 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
    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 2, 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 COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.

 */

 /* 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} %{Wl,*:%*} \
 		   %{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)
	/* 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
	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 2, 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 COPYING. If not, write to
	the Free Software Foundation, 59 Temple Place - Suite 330,
	Boston, MA 02111-1307, USA.

	*/

	/* 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} %{Wl,:%} \
	%{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)