[thirdparty/gcc.git] / gcc / config / lynx.h

/* Target independent definitions for LynxOS.
   Copyright (C) 1993, 1994 Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC 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.

GNU CC 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, 675 Mass Ave, Cambridge, MA 02139, 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}"

/* Set the appropriate names for the Lynx startfiles. */

#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{p:pinit1.o%s}%{!p:%{msystem-v:vinit1.o%s}%{!msystem-v: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
#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 \
{ 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"); }

/* Define this so that C++ destructors will use atexit, since LynxOS
   calls exit after main returns.  */

#define HAVE_ATEXIT

/* 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_bss, in_ctors, in_dtors, in_fini,

#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS					\
  CONST_SECTION_FUNCTION					\
  BSS_SECTION_FUNCTION						\
  CTORS_SECTION_FUNCTION					\
  DTORS_SECTION_FUNCTION					\
  FINI_SECTION_FUNCTION

#undef CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP	".section\t.ctors"
#undef DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP	".section\t.dtors"

#define INT_ASM_OP		".long"

/* 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
Commit	Line	Data
4843c185	1	/* Target independent definitions for LynxOS.
85378227	2	Copyright (C) 1993, 1994 Free Software Foundation, Inc.
4fb420c2	3
4843c185 RS	4	This file is part of GNU CC.
	5
	6	GNU CC is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	GNU CC is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU CC; see the file COPYING. If not, write to
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20	/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.
	21	We can get quite a bit from generic svr3, but have to do some overrides. */
	22
	23	#include "svr3.h"
	24
	25	/* Define various macros, depending on the combination of flags. */
4fb420c2 JW	26
4fb420c2 JW	27	#undef CPP_SPEC
4843c185 RS	28	#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \
	29	%{mposix:-D_POSIX_SOURCE} \
	30	%{msystem-v:-I/usr/include_v}"
	31
	32	/* No asm spec needed, since using GNU assembler always. */
4fb420c2	33
4843c185	34	/* No linker spec needed, since using GNU linker always. */
4fb420c2 JW	35
4fb420c2 JW	36	#undef LIB_SPEC
4843c185 RS	37	#define LIB_SPEC "%{mthreads:-L/lib/thread/} \
	38	%{msystem-v:-lc_v} \
	39	%{!msystem-v:%{mposix:-lc_p} -lc}"
	40
	41	/* Set the appropriate names for the Lynx startfiles. */
4fb420c2 JW	42
4fb420c2 JW	43	#undef STARTFILE_SPEC
4843c185	44	#define STARTFILE_SPEC "%{p:pinit1.o%s}%{!p:%{msystem-v:vinit1.o%s}%{!msystem-v:init1.o%s}}"
4fb420c2 JW	45
4fb420c2 JW	46	#undef ENDFILE_SPEC
4843c185	47	#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
4fb420c2	48
4843c185	49	/* Override the svr3 versions. */
4fb420c2 JW	50
	51	#undef WCHAR_TYPE
	52	#define WCHAR_TYPE "int"
	53
	54	#undef PTRDIFF_TYPE
	55	#define PTRDIFF_TYPE "long int"
	56
4843c185	57	/* We want to output DBX (stabs) debugging information normally. */
4fb420c2 JW	58
4fb420c2 JW	59	#define DBX_DEBUGGING_INFO
02881b1b JW	60	#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
02881b1b JW	61
4843c185 RS	62	/* It is convenient to be able to generate standard coff debugging
4843c185 RS	63	if requested via -gcoff. */
02881b1b JW	64
02881b1b JW	65	#define SDB_DEBUGGING_INFO
4fb420c2	66
4843c185 RS	67	/* Be function-relative for block and source line stab directives. */
	68
	69	#define DBX_BLOCKS_FUNCTION_RELATIVE 1
	70
	71	/* but, to make this work, functions must appear prior to line info */
4fb420c2	72
4843c185 RS	73	#define DBX_FUNCTION_FIRST
	74
	75	/* Generate a blank trailing N_SO to mark the end of the .o file, since
	76	we can't depend upon the linker to mark .o file boundaries with
	77	embedded stabs. */
	78
	79	#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
	80	fprintf (FILE, \
	81	"\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
	82
	83	#undef ASM_OUTPUT_SOURCE_LINE
	84	#define ASM_OUTPUT_SOURCE_LINE(file, line) \
	85	{ static int sym_lineno = 1; \
85378227 RK	86	fprintf (file, ".stabn 68,0,%d,.LM%d-", \
	87	line, sym_lineno); \
	88	assemble_name (file, \
	89	XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
	90	fprintf (file, "\n.LM%d:\n", sym_lineno); \
4843c185	91	sym_lineno += 1; }
4fb420c2 JW	92
	93	/* Handle #pragma pack and sometimes #pragma weak. */
	94
	95	#define HANDLE_SYSV_PRAGMA
	96
4843c185 RS	97	/* Some additional command-line options. */
4843c185 RS	98
4fb420c2 JW	99	#define TARGET_THREADS (target_flags & MASK_THREADS)
	100	#define MASK_THREADS 0x40000000
	101
	102	#define TARGET_POSIX (target_flags & MASK_POSIX)
	103	#define MASK_POSIX 0x20000000
	104
	105	#define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
	106	#define MASK_SYSTEM_V 0x10000000
	107
4fb420c2 JW	108	#undef SUBTARGET_SWITCHES
	109	#define SUBTARGET_SWITCHES \
	110	{"threads", MASK_THREADS}, \
	111	{"posix", MASK_POSIX}, \
4843c185	112	{"system-v", MASK_SYSTEM_V},
4fb420c2 JW	113
	114	#undef SUBTARGET_OVERRIDE_OPTIONS
	115	#define SUBTARGET_OVERRIDE_OPTIONS \
	116	{ if (TARGET_SYSTEM_V && profile_flag) \
	117	warning ("-msystem-v and -p are incompatible"); \
	118	if (TARGET_SYSTEM_V && TARGET_THREADS) \
	119	warning ("-msystem-v and -mthreads are incompatible"); }
	120
4843c185 RS	121	/* Define this so that C++ destructors will use atexit, since LynxOS
4843c185 RS	122	calls exit after main returns. */
4fb420c2 JW	123
4fb420c2 JW	124	#define HAVE_ATEXIT
02881b1b	125
4843c185 RS	126	/* Since init.o et al put all sorts of stuff into the init section,
	127	we can't use the standard init section support in crtbegin.o. */
	128
	129	#undef INIT_SECTION_ASM_OP
	130
	131	#undef EXTRA_SECTIONS
	132	#define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors, in_fini,
	133
	134	#undef EXTRA_SECTION_FUNCTIONS
	135	#define EXTRA_SECTION_FUNCTIONS \
	136	CONST_SECTION_FUNCTION \
	137	BSS_SECTION_FUNCTION \
	138	CTORS_SECTION_FUNCTION \
	139	DTORS_SECTION_FUNCTION \
	140	FINI_SECTION_FUNCTION
	141
	142	#undef CTORS_SECTION_ASM_OP
	143	#define CTORS_SECTION_ASM_OP ".section\t.ctors"
	144	#undef DTORS_SECTION_ASM_OP
	145	#define DTORS_SECTION_ASM_OP ".section\t.dtors"
	146
	147	#define INT_ASM_OP ".long"
	148
	149	/* A C statement (sans semicolon) to output an element in the table of
	150	global constructors. */
	151	#undef ASM_OUTPUT_CONSTRUCTOR
	152	#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
	153	do { \
	154	ctors_section (); \
	155	fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
	156	assemble_name (FILE, NAME); \
	157	fprintf (FILE, "\n"); \
	158	} while (0)
	159
	160	/* A C statement (sans semicolon) to output an element in the table of
	161	global destructors. */
	162	#undef ASM_OUTPUT_DESTRUCTOR
	163	#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
	164	do { \
	165	dtors_section (); \
	166	fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
	167	assemble_name (FILE, NAME); \
	168	fprintf (FILE, "\n"); \
	169	} while (0)
	170
	171	#undef DO_GLOBAL_CTORS_BODY
	172	#undef DO_GLOBAL_DTORS_BODY