lynx.h revision 90075 
1/* Definitions for Rs6000 running LynxOS.
2   Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
3   Contributed by David Henkel-Wallace, Cygnus Support (gumby@cygnus.com)
4
5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING.  If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA.  */
21
22/* Definitions we want to override with those from rs6000.h: */
23#undef LIB_SPEC
24#undef PTRDIFF_TYPE
25#undef WCHAR_TYPE
26#undef WCHAR_TYPE_SIZE
27#undef ASM_FILE_START
28#undef EXTRA_SECTIONS
29#undef READONLY_DATA_SECTION
30#undef EXTRA_SECTION_FUNCTIONS
31#undef SELECT_RTX_SECTION
32#undef SELECT_SECTION
33#undef USER_LABEL_PREFIX
34#undef ASM_OUTPUT_LABELREF
35#undef ASM_OUTPUT_INTERNAL_LABEL
36#undef ASM_GENERATE_INTERNAL_LABEL
37#undef ASM_OUTPUT_COMMON
38#undef ASM_OUTPUT_LOCAL
39
40#undef SDB_DEBUGGING_INFO
41#undef DBX_DEBUGGING_INFO
42#undef PREFERRED_DEBUGGING_TYPE
43
44#undef FUNCTION_PROFILER
45
46#include <rs6000/rs6000.h>
47
48/* Print subsidiary information on the compiler version in use.  */
49#define TARGET_VERSION fprintf (stderr, " (LynxOS-RS/6000)");
50
51/* LynxOS has signed chars, regardless of what most R/S 6000 systems do */
52#undef DEFAULT_SIGNED_CHAR
53#define DEFAULT_SIGNED_CHAR 1
54
55#undef CPP_PREDEFINES
56#define CPP_PREDEFINES "-Acpu=rs6000 -Amachine=rs6000 -Asystem=lynx -Asystem=unix -DLynx -D_IBMR2 -Dunix -Drs6000 -Dlynx -DLYNX"
57
58#undef LINK_SPEC
59#define LINK_SPEC "-T0x10001000 -H0x1000 -D0x20000000 -btextro -bhalt:4 -bnodelcsect -bnso -bro -bnoglink %{v} %{b*}"
60
61#undef LIB_SPEC
62#define LIB_SPEC "%{mthreads:-L/lib/thread/}  \
63  %{msystem-v:-lc_v -lm.v}  \
64  %{!msystem-v:%{mposix:-lc_p} -lc -lm}"
65
66#undef STARTFILE_SPEC
67#define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit.o%s}%{!mthreads:pinit.o%s}}%{!p:%{msystem-v:vinit.o%s -e_start}%{!msystem-v:%{mthreads:thread/init.o%s}%{!mthreads:init.o%s}}}"
68
69#undef ENDFILE_SPEC
70
71/* This can become more refined as we have more powerpc options.  */
72#undef ASM_SPEC
73#define ASM_SPEC "-u %(asm_cpu)"
74
75#undef SUBTARGET_SWITCHES
76#define SUBTARGET_SWITCHES \
77    {"threads",		MASK_THREADS},		\
78    {"posix",		MASK_POSIX},		\
79    {"system-v",	MASK_SYSTEM_V},
80
81#undef SUBTARGET_OVERRIDE_OPTIONS
82#define SUBTARGET_OVERRIDE_OPTIONS \
83do {								\
84  if (TARGET_SYSTEM_V && profile_flag)				\
85    warning ("-msystem-v and -p are incompatible");		\
86  if (TARGET_SYSTEM_V && TARGET_THREADS)			\
87    warning ("-msystem-v and -mthreads are incompatible");	\
88} while (0)
89
90/* For collect2 */
91#define OBJECT_FORMAT_NONE
92#undef OBJECT_FORMAT_COFF
93#undef OBJECT_FORMAT_ROSE
94#undef MD_EXEC_PREFIX
95#undef REAL_LD_FILE_NAME
96#undef REAL_STRIP_FILE_NAME
97
98/* LynxOS doesn't have mcount.  */
99#undef FUNCTION_PROFILER
100#define FUNCTION_PROFILER(file, profile_label_no)
101