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133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
/* Definitions for DEC Alpha/AXP running FreeBSD using the ELF format
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by BSDi, written by David O'Brien <obrien@FreeBSD.org>
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES \
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"-D__ELF__ -Dunix -D__FreeBSD__ -Asystem(unix) -Asystem(bsd) -Asystem(FreeBSD)"
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/* Provide a CPP_SPEC appropriate for FreeBSD/alpha. Besides the dealing with
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the GCC option `-posix', and PIC issues as on all FreeBSD platforms, we must
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deal with the Alpha's FP issues. */
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#undef CPP_SPEC
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#define CPP_SPEC "%(cpp_cpu) \
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%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
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%{posix:-D_POSIX_SOURCE} \
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%{mieee:-D_IEEE_FP} \
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%{mieee-with-inexact:-D_IEEE_FP -D_IEEE_FP_INEXACT}"
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#undef LINK_SPEC
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#define LINK_SPEC "-m elf64alpha %{G*} %{relax:-relax} \
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%{p:%e`-p' not supported; use `-pg' and gprof(1)} \
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%{Wl,*:%*} \
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%{assert*} %{R*} %{rpath*} %{defsym*} \
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%{shared:-Bshareable %{h*} %{soname*}} \
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%{symbolic:-Bsymbolic} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
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%{static:-Bstatic}}"
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/* Provide an ASM_SPEC appropriate for a FreeBSD/Alpha target. This differs
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from the generic FreeBSD ASM_SPEC in that no special handling of PIC is
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necessary on the Alpha. */
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/* Per Richard Henderson <rth@cygnus.com>, it is better to use the `.arch'
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directive in the assembly file. alpha/elf.h gives us this in
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"ASM_FILE_START".
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#undef ASM_SPEC
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#define ASM_SPEC " %| %{mcpu=*:-m%*}"
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*/
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/* XXX, if FreeBSD/Alpha grows a crti.o file, we can use the alpha/elf.h
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definition. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
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%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
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/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
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magical crtend.o file which provides part of the support for
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getting C++ file-scope static object constructed before entering
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`main'. */
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/* XXX, if FreeBSD/Alpha grows a crtn.o file, we can use the alpha/elf.h
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definition. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{!shared:crtend.o%s} %{shared:crtendS.o%s}"
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/************************[ Target stuff ]***********************************/
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/* Define the actual types of some ANSI-mandated types.
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Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
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c-common.c, and config/<arch>/<arch>.h. */
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/* alpha.h gets this wrong for FreeBSD. We use the GCC defaults instead. */
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#undef WCHAR_TYPE
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#undef WCHAR_UNSIGNED
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#define WCHAR_UNSIGNED 0
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Handle cross-compilation on 32-bits machines (such as i386) for 64-bits
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machines (Alpha in this case). */
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#if defined(__i386__)
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#undef HOST_BITS_PER_LONG
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#define HOST_BITS_PER_LONG 32
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#undef HOST_WIDE_INT
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#define HOST_WIDE_INT long long
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#undef HOST_BITS_PER_WIDE_INT
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#define HOST_BITS_PER_WIDE_INT 64
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#endif
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (FreeBSD/alpha ELF)");
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#define TARGET_ELF 1
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)
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#undef HAS_INIT_SECTION
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/* Output assembler code to FILE to increment profiler label # LABELNO
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for profiling a function entry. Under FreeBSD/Alpha, the assembler does
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nothing special with -pg. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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fputs ("\tjsr $28,_mcount\n", (FILE))
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/* Show that we need a GP when profiling. */
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#undef TARGET_PROFILING_NEEDS_GP
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#define TARGET_PROFILING_NEEDS_GP 1
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/* This is the char to use for continuation (in case we need to turn
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continuation back on). */
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#undef DBX_CONTIN_CHAR
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#define DBX_CONTIN_CHAR '?'
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