/* Target independent definitions for LynxOS.
- Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004,
+ 2007 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.
- We can get quite a bit from generic svr3, but have to do some overrides. */
-
-#include "svr3.h"
-
-/* Define various macros, depending on the combination of flags. */
-
-#undef CPP_SPEC
-#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \
- %{mposix:-D_POSIX_SOURCE} \
- %{msystem-v:-I/usr/include_v}"
-
-/* No asm spec needed, since using GNU assembler always. */
-
-/* No linker spec needed, since using GNU linker always. */
-
-#undef LIB_SPEC
-#define LIB_SPEC "%{mthreads:-L/lib/thread/} \
- %{msystem-v:-lc_v} \
- %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
-
-/* Set the appropriate names for the Lynx startfiles. */
-
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit1.o%s}%{!mthreads:pinit1.o%s}}%{!p:%{msystem-v:vinit1.o%s -e_start}%{!msystem-v:%{mthreads:thread/init1.o%s}%{!mthreads:init1.o%s}}}"
-
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
-
-/* Override the svr3 versions. */
-
-#undef WCHAR_TYPE
-#define WCHAR_TYPE "int"
-
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "long int"
-
-/* We want to output DBX (stabs) debugging information normally. */
-
-#define DBX_DEBUGGING_INFO
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-
-/* It is convenient to be able to generate standard coff debugging
- if requested via -gcoff. */
-
-#define SDB_DEBUGGING_INFO
-
-/* Be function-relative for block and source line stab directives. */
-
-#define DBX_BLOCKS_FUNCTION_RELATIVE 1
-
-/* but, to make this work, functions must appear prior to line info */
-
-#define DBX_FUNCTION_FIRST
-
-/* 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_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
- fprintf (FILE, \
- "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
-
-#undef ASM_OUTPUT_SOURCE_LINE
-#define ASM_OUTPUT_SOURCE_LINE(file, line) \
- { static int sym_lineno = 1; \
- fprintf (file, ".stabn 68,0,%d,.LM%d-", \
- line, sym_lineno); \
- assemble_name (file, \
- XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
- fprintf (file, "\n.LM%d:\n", sym_lineno); \
- sym_lineno += 1; }
-
-/* Handle #pragma pack and sometimes #pragma weak. */
-
-#define HANDLE_SYSV_PRAGMA
-
-/* Some additional command-line options. */
-
-#define TARGET_THREADS (target_flags & MASK_THREADS)
-#define MASK_THREADS 0x40000000
-
-#define TARGET_POSIX (target_flags & MASK_POSIX)
-#define MASK_POSIX 0x20000000
-
-#define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
-#define MASK_SYSTEM_V 0x10000000
-
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
- {"threads", MASK_THREADS}, \
- {"posix", MASK_POSIX}, \
- {"system-v", MASK_SYSTEM_V},
-
-#undef SUBTARGET_OVERRIDE_OPTIONS
-#define SUBTARGET_OVERRIDE_OPTIONS \
-do { \
- if (TARGET_SYSTEM_V && profile_flag) \
- warning ("-msystem-v and -p are incompatible"); \
- if (TARGET_SYSTEM_V && TARGET_THREADS) \
- warning ("-msystem-v and -mthreads are incompatible"); \
-} while (0)
-
-/* Since init.o et al put all sorts of stuff into the init section,
- we can't use the standard init section support in crtbegin.o. */
-
-#undef INIT_SECTION_ASM_OP
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_fini
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
- CONST_SECTION_FUNCTION \
- CTORS_SECTION_FUNCTION \
- DTORS_SECTION_FUNCTION \
- FINI_SECTION_FUNCTION
-
-#undef CTORS_SECTION_ASM_OP
-#define CTORS_SECTION_ASM_OP "\t.section\t.ctors"
-#undef DTORS_SECTION_ASM_OP
-#define DTORS_SECTION_ASM_OP "\t.section\t.dtors"
-
-#define INT_ASM_OP "\t.long\t"
-
-/* A C statement (sans semicolon) to output an element in the table of
- global constructors. */
-#undef ASM_OUTPUT_CONSTRUCTOR
-#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
- do { \
- ctors_section (); \
- fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
-
-/* A C statement (sans semicolon) to output an element in the table of
- global destructors. */
-#undef ASM_OUTPUT_DESTRUCTOR
-#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
- do { \
- dtors_section (); \
- fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
-
-#undef DO_GLOBAL_CTORS_BODY
-#undef DO_GLOBAL_DTORS_BODY
-
-/* LynxOS doesn't have mcount. */
-#undef FUNCTION_PROFILER
-#define FUNCTION_PROFILER(file, profile_label_no)
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* In this file we set up defaults that can be chosen by
+ <target>/lynx.h files. A target-specific lynx.h file can decide
+ either to define and override these definitions or to use them by
+ ensuring they are undefined at this point. If we were to #undef
+ them here we might accidentally disable some target-specific
+ defines. */
+
+#ifndef EXTRA_OS_LYNX_TARGET_SPECS
+# define EXTRA_OS_LYNX_TARGET_SPECS
+#endif
+
+#ifndef EXTRA_OS_LYNX_SPECS
+# define EXTRA_OS_LYNX_SPECS \
+ { "cpp_os_lynx", CPP_OS_LYNX_SPEC }, \
+ { "lib_os_lynx", LIB_OS_LYNX_SPEC }, \
+ { "link_os_lynx", LINK_OS_LYNX_SPEC }, \
+ { "startfile_os_lynx", STARTFILE_OS_LYNX_SPEC }, \
+ { "endfile_os_lynx", ENDFILE_OS_LYNX_SPEC }, \
+ EXTRA_OS_LYNX_TARGET_SPECS
+#endif
+
+#ifndef SUBTARGET_EXTRA_SPECS
+# define SUBTARGET_EXTRA_SPECS EXTRA_OS_LYNX_SPECS
+#endif
+
+#ifndef CPP_SPEC
+# define CPP_SPEC "%(cpp_cpu) %(cpp_os_lynx)"
+#endif
+
+#ifndef LIB_SPEC
+# define LIB_SPEC "%(lib_os_lynx)"
+#endif
+
+#ifndef LINK_SPEC
+# define LINK_SPEC "%(link_os_lynx)"
+#endif
+
+#ifndef STARTFILE_SPEC
+# define STARTFILE_SPEC "%(startfile_os_lynx)"
+#endif
+
+#ifndef ENDFILE_SPEC
+# define ENDFILE_SPEC "%(endfile_os_lynx)"
+#endif
+
+#ifndef CPP_OS_LYNX_SPEC
+# define CPP_OS_LYNX_SPEC \
+"%{mthreads: \
+ %{mlegacy-threads: \
+ %ecannot use mthreads and mlegacy-threads together}} \
+ %{mthreads: -D_MULTITHREADED} \
+ %{mlegacy-threads: -D_THREADS_POSIX4ad4} \
+ -Asystem=lynx -Asystem=unix -D__Lynx__ -D__unix__"
+#endif
+
+#ifndef LIB_OS_LYNX_SPEC
+# define LIB_OS_LYNX_SPEC \
+"%{mlegacy-threads:-lposix-pre1c} -lm -lc"
+#endif
+
+/* We link static executables for LynxOS by default unless -mshared is
+ used when linking an executable. Along the same line, we link to
+ shared libraries when linking a shared object by default unless
+ -static is used.
+
+ We have to pass in our -L options here otherwise the translated
+ startfile directories (%D) will take priority over this.
+ Furthermore since we have to pass in -L options here we have to
+ make sure that -L options provided by the user take priority over
+ everything we specify. */
+
+#ifndef LINK_OS_LYNX_SPEC
+# define LINK_OS_LYNX_SPEC \
+"%{shared} %{static} \
+ %{mshared: %{static: %ecannot use mshared and static together}} \
+ %{!mshared: %{!shared: %{!static: -static}}} \
+ %{L*} \
+ %{mthreads: \
+ %{mshared: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
+ %{shared: \
+ %{!static: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
+ %{!mshared: -L/lib/thread}} \
+ %{shared: %{static: -L/lib/thread}}} \
+ %{!mthreads: \
+ %{mshared: -L/lib/shlib -rpath /lib/shlib} \
+ %{shared: -L/lib/shlib -rpath /lib/shlib}} \
+ %{mlegacy-threads:-lposix-pre1c} -lm -lc"
+#endif
+
+#ifndef STARTFILE_OS_LYNX_SPEC
+# define STARTFILE_OS_LYNX_SPEC \
+"%{!shared: \
+ %{!mthreads: \
+ %{p:gcrt1.o%s} %{pg:gcrt1.o%s} \
+ %{!p:%{!pg:crt1.o%s}}} \
+ %{mthreads: \
+ %{p:thread/gcrt1.o%s} %{pg:thread/gcrt1.o%s} \
+ %{!p:%{!pg:thread/crt1.o%s }}}}\
+ %{mthreads: thread/crti.o%s} %{!mthreads: crti.o%s} \
+ %{!shared: crtbegin.o%s} \
+ %{shared: crtbeginS.o%s}"
+#endif
+
+#ifndef ENDFILE_OS_LYNX_SPEC
+# define ENDFILE_OS_LYNX_SPEC \
+"%{!shared: crtend.o%s} \
+ %{shared: crtendS.o%s} \
+ %{mthreads: thread/crtn.o%s} %{!mthreads: crtn.o%s}"
+#endif
+
+/* Define the actual types of some ANSI-mandated types. */
+
+#ifndef SIZE_TYPE
+# define SIZE_TYPE "unsigned int"
+#endif
+
+#ifndef PTRDIFF_TYPE
+# define PTRDIFF_TYPE "int"
+#endif
+
+#ifndef WCHAR_TYPE
+# define WCHAR_TYPE "long int"
+#endif
+
+#ifndef WCHAR_TYPE_SIZE
+# define WCHAR_TYPE_SIZE BITS_PER_WORD
+#endif
+
+/* Define ASM_OUTPUT_ALIGN to use the .balign directive rather that
+ the .align directive with GAS. */
+
+#ifndef ASM_OUTPUT_ALIGN
+# define ASM_OUTPUT_ALIGN(FILE, LOG) \
+ do \
+ { \
+ if ((LOG) != 0) \
+ fprintf ((FILE), "\t.balign %d\n", 1 << (LOG)); \
+ } \
+ while (0)
+#endif
+
+/* Keep the *_DEBUGGING_INFO defines from elfos.h except that stabs is
+ the default on LynxOS. */
+
+#ifndef PREFERRED_DEBUGGING_TYPE
+# define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+#endif
+
+/* We have C++ support in our system headers. */
+
+#ifndef NO_IMPLICIT_EXTERN_C
+# define NO_IMPLICIT_EXTERN_C
+#endif
+
+#ifndef TARGET_POSIX_IO
+# define TARGET_POSIX_IO
+#endif
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