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iris5.h
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1994-09-20
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136 lines
/* Definitions of target machine for GNU compiler. Iris version 5.
Copyright (C) 1993 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. */
#define TARGET_DEFAULT MASK_ABICALLS
#define ABICALLS_ASM_OP ".option pic2"
#include "mips/iris4.h"
/* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */
#undef OBJECT_FORMAT_COFF
/* ??? This is correct, but not very useful, because there is no file that
uses this macro. */
/* ??? The best way to handle global constructors under ELF is to use .init
and .fini sections. Unfortunately, there is apparently no way to get
the Irix 5.x (x <= 2) assembler to create these sections. So we instead
use collect. The linker can create these sections via -init and -fini
options, but using this would require modifying how crtstuff works, and
I will leave that for another time (or someone else). */
#define OBJECT_FORMAT_ELF
/* Specify wchar_t types. */
#undef WCHAR_TYPE
#undef WCHAR_TYPE_SIZE
#undef MAX_WCHAR_TYPE_SIZE
#define WCHAR_TYPE "long int"
#define WCHAR_TYPE_SIZE LONG_TYPE_SIZE
#define MAX_WCHAR_TYPE_SIZE MAX_LONG_TYPE_SIZE
/* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when
options for them exist. */
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
-D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
-D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \
-Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)"
#undef CPP_SPEC
#define CPP_SPEC "\
%{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
%{.cc: -D_LANGUAGE_C_PLUS_PLUS} \
%{.cxx: -D_LANGUAGE_C_PLUS_PLUS} \
%{.C: -D_LANGUAGE_C_PLUS_PLUS} \
%{.m: -D_LANGUAGE_OBJECTIVE_C -D_LANGUAGE_C} \
%{.S: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
%{.s: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
%{!.S:%{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}\
%{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \
%{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
%{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
%{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
%{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \
%{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
%{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64} \
%{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
%{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
%{mips3:-U__mips -D__mips=3}"
#undef LINK_SPEC
#define LINK_SPEC "\
%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
%{bestGnum} %{shared} %{non_shared} \
%{call_shared} %{no_archive} %{exact_version} \
%{!shared: %{!non_shared: \
%{!call_shared: -call_shared -no_unresolved}}} \
-_SYSTYPE_SVR4"
#undef LIB_SPEC
#define LIB_SPEC "%{p:-lprof1} %{pg:-lprof1} -lc crtn.o%s"
/* We do not want to run mips-tfile! */
#undef ASM_FINAL_SPEC
/* The system header files are C++ aware. */
/* ??? Unfortunately, most but not all of the headers are C++ aware.
Specifically, curses.h is not, and libg++ won't build because of it
if this is defined. On the other hand, SGI has C++ packages with
header files in /usr/include, and they won't work unless this is
defined. We need some way to fix just those files that need fixing. */
/* #define NO_IMPLICIT_EXTERN_C 1 */
/* We don't support debugging info for now. */
#undef DBX_DEBUGGING_INFO
#undef SDB_DEBUGGING_INFO
#undef MIPS_DEBUGGING_INFO
#undef MACHINE_TYPE
#define MACHINE_TYPE "SGI running IRIX 5.0"
/* -G is incompatible with -KPIC which is the default, so only allow objects
in the small data section if the user explicitly asks for it. */
#undef MIPS_DEFAULT_GVALUE
#define MIPS_DEFAULT_GVALUE 0
/* In Irix 5, we must output a `.global name .text' directive for every used
but undefined function. If we don't, the linker may perform an optimization
(skipping over the insns that set $gp) when it is unsafe. This is used
indirectly by ASM_OUTPUT_EXTERNAL. */
#define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \
do { \
fputs ("\t.globl ", FILE); \
assemble_name (FILE, NAME); \
fputs (" .text\n", FILE); \
} while (0)
/* Also do this for libcalls. */
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
mips_output_external_libcall (FILE, XSTR (FUN, 0))
/* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables.
This is used indirectly by ASM_OUTPUT_EXTERNAL. */
#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
do { \
tree name_tree = get_identifier (NAME); \
TREE_ASM_WRITTEN (name_tree) = 1; \
} while (0)