1/* Definitions of target machine for GNU compiler. ARM RISCiX 1.1x version. 2 Copyright (C) 1993, 1995, 1997 Free Software Foundation, Inc. 3 Contributed by Richard Earnshaw (rwe11@cl.cam.ac.uk), based on original 4 work by Pieter `Tiggr' Schoenmakers (rcpieter@win.tue.nl) 5 and Martin Simmons (@harleqn.co.uk). 6 7This file is part of GNU CC. 8 9GNU CC is free software; you can redistribute it and/or modify 10it under the terms of the GNU General Public License as published by 11the Free Software Foundation; either version 2, or (at your option) 12any later version. 13 14GNU CC is distributed in the hope that it will be useful, 15but WITHOUT ANY WARRANTY; without even the implied warranty of 16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17GNU General Public License for more details. 18 19You should have received a copy of the GNU General Public License 20along with GNU CC; see the file COPYING. If not, write to 21the Free Software Foundation, 59 Temple Place - Suite 330, 22Boston, MA 02111-1307, USA. */ 23 24/* RISCiX 1.1x is basically the same as 1.2x except that it doesn't have 25 symrename or atexit. */ 26 27/* Translation to find startup files. On RISCiX boxes, gcrt0.o is in 28 /usr/lib. */ 29#define STARTFILE_SPEC \ 30 "%{pg:/usr/lib/gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}" 31 32#ifndef CPP_PREDEFINES 33#define CPP_PREDEFINES "-Darm -Driscix -Dunix -Asystem(unix) -Acpu(arm) -Amachine(arm)" 34#endif 35 36/* Riscix 1.1 doesn't have X/OPEN support, so only accept -mbsd (but ignore 37 it). 38 By not having -mxopen and -mno-symrename, we get warning messages, 39 but everything still compiles. */ 40/* None of these is actually used in cc1, so they modify bit 31 */ 41#define SUBTARGET_SWITCHES \ 42{"bsd", 0x80000000, ""}, 43 44 45/* Run-time Target Specification. */ 46#define TARGET_VERSION \ 47 fputs (" (ARM/RISCiX)", stderr); 48 49/* This is used in ASM_FILE_START */ 50#define ARM_OS_NAME "RISCiX" 51 52#ifdef riscos 53#define TARGET_WHEN_DEBUGGING 3 54#else 55#define TARGET_WHEN_DEBUGGING 1 56#endif 57 58/* 'char' is signed by default on RISCiX, unsigned on RISCOS. */ 59#ifdef riscos 60#define DEFAULT_SIGNED_CHAR 0 61#else 62#define DEFAULT_SIGNED_CHAR 1 63#endif 64 65/* Define this if the target system supports the function atexit form the 66 ANSI C standard. If this is not defined, and INIT_SECTION_ASM_OP is not 67 defined, a default exit function will be provided to support C++. 68 The man page only describes on_exit, but atexit is also there. 69 This seems to be missing in early versions. */ 70/*#define HAVE_ATEXIT 1 */ 71/* Some systems use __main in a way incompatible with its use in gcc, in these 72 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to 73 give the same symbol without quotes for an alternative entry point. You 74 must define both, or neither. */ 75#ifndef NAME__MAIN 76#define NAME__MAIN "__gccmain" 77#define SYMBOL__MAIN __gccmain 78#endif 79 80/* Override the normal default CPU */ 81#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm2 82 83/* r10 is reserved by RISCiX */ 84#define SUBTARGET_CONDITIONAL_REGISTER_USAGE \ 85 fixed_regs[10] = 1; \ 86 call_used_regs[10] = 1; 87 88 89#include "arm/aout.h" 90 91#undef CPP_SPEC 92#define CPP_SPEC "\ 93%(cpp_cpu_arch) %(cpp_apcs_pc) %(cpp_float) %{!ansi: -D_BSD_C} \ 94" 95 96 97/* The native RISCiX assembler does not support stabs of any kind; because 98 the native assembler is not used by the compiler, Acorn didn't feel it was 99 necessary to put them in! */ 100 101#ifdef DBX_DEBUGGING_INFO 102#undef DBX_DEBUGGING_INFO 103#endif 104