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1.1 root 1: /* Definitions of target machine for GNU compiler. ARM RISCiX version.
2: Copyright (C) 1993 Free Software Foundation, Inc.
3: Contributed by Richard Earnshaw ([email protected]), based on original
4: work by Pieter `Tiggr' Schoenmakers ([email protected])
5: and Martin Simmons (@harleqn.co.uk).
6:
7: This file is part of GNU CC.
8:
9: GNU CC is free software; you can redistribute it and/or modify
10: it under the terms of the GNU General Public License as published by
11: the Free Software Foundation; either version 2, or (at your option)
12: any later version.
13:
14: GNU CC is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
18:
19: You should have received a copy of the GNU General Public License
20: along with GNU CC; see the file COPYING. If not, write to
21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22:
23: /* Translation to find startup files. On RISCiX boxes, gcrt0.o is in
24: /usr/lib. */
25: #define STARTFILE_SPEC \
26: "%{pg:/usr/lib/gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
27:
28: #ifndef CPP_PREDEFINES
29: #define CPP_PREDEFINES \
30: "-Darm -Driscix -Dunix -Asystem(unix) -Acpu(arm) -Amachine(arm)"
31: #endif
32: #if 0
33: #define CPP_PREDEFINES "-Darm -Driscos -Acpu(arm) -Amachine(arm)"
34: #endif
35:
36: #ifndef CPP_SPEC
37: #define CPP_SPEC "%{m6:-D__arm6__} \
38: %{mbsd:%{pedantic:%e-mbsd and -pedantic incompatible} -D_BSD_C} \
39: %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible} \
40: %{pedantic:%e-mxopen and -pedantic incompatible} -D_XOPEN_C} \
41: %{!mbsd:%{!mxopen:%{!ansi: -D_BSD_C}}}"
42: #endif
43:
44: /* RISCiX has some wierd symbol name munging, that is done to the object module
45: after assembly, which enables multiple libraries to be supported within
46: one (possibly shared) library. It basically changes the symbol name of
47: certain symbols (for example _bcopy is converted to _$bcopy if using BSD)
48: Symrename's parameters are determined as follows:
49: -mno-symrename Don't run symrename
50: -mbsd symrename -BSD <file>
51: -mxopen symrename -XOPEN <file>
52: -ansi symrename - <file>
53: <none> symrename -BSD <file>
54: */
55:
56: #ifndef ASM_FINAL_SPEC
57: #if !defined (CROSS_COMPILER)
58: #define ASM_FINAL_SPEC "\
59: %{!mno-symrename: \
60: \n /usr/bin/symrename \
61: -%{mbsd:%{ansi:%e-mbsd and -ansi incompatible}BSD}\
62: %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible}\
63: %{ansi:%e-mxopen and -ansi incompatible}XOPEN}\
64: %{!mbsd:%{!mxopen:%{!ansi:BSD}}} %{c:%{o*:%*}%{!o*:%b.o}}%{!c:%U.o}}"
65: #endif
66: #endif
67:
68: /* None of these is actually used in cc1, so they modify bit 31 */
69: #define ARM_EXTRA_TARGET_SWITCHES \
70: {"bsd", 0x80000000}, {"xopen", 0x80000000}, {"no-symrename", 0x80000000},
71:
72:
73:
74: /* Run-time Target Specification. */
75: #define TARGET_VERSION \
76: fputs (" (ARM/RISCiX)", stderr);
77:
78: /* This is used in ASM_FILE_START */
79: #define ARM_OS_NAME "RISCiX"
80:
81: #ifdef riscos
82: #define TARGET_WHEN_DEBUGGING 3
83: #else
84: #define TARGET_WHEN_DEBUGGING 1
85: #endif
86:
87: /* 'char' is signed by default on RISCiX, unsigned on RISCOS. */
88: #ifdef riscos
89: #define DEFAULT_SIGNED_CHAR 0
90: #else
91: #define DEFAULT_SIGNED_CHAR 1
92: #endif
93:
94: /* Define this if the target system supports the function atexit form the
95: ANSI C standard. If this is not defined, and INIT_SECTION_ASM_OP is not
96: defined, a default exit function will be provided to support C++.
97: The man page only describes on_exit, but atexit is also there. */
98: #define HAVE_ATEXIT 1
99: /* Some systems use __main in a way incompatible with its use in gcc, in these
100: cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
101: give the same symbol without quotes for an alternative entry point. You
102: must define both, or niether. */
103: #ifndef NAME__MAIN
104: #define NAME__MAIN "__gccmain"
105: #define SYMBOL__MAIN __gccmain
106: #endif
107:
108: #include "arm/arm.h"
109:
110: /* The native RISCiX assembler does not support stabs of any kind; because
111: the native assembler is not used by the compiler, Acorn didn't feel it was
112: necessary to put them in! */
113:
114: #ifdef DBX_DEBUGGING_INFO
115: #undef DBX_DEBUGGING_INFO
116: #endif
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