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i386-netbsdelf description
- To: gcc-patches at gcc dot gnu dot org
- subject: i386-netbsdelf description
- From: matthew green <mrg at cygnus dot com>
- Date: Sat, 14 Jul 2001 21:33:22 +1000
- organisation: Red Hat, Inc.
hi folks.
here's my version of i386-netbsdelf. the c compiler works jsut
fine (i've built several things, including the entire NetBSD
tree, and several other programs), however c++ doesn't seem to
work right just yet. i hope to fix that shortly.
it is just a simple patch to config.gcc to match i386-netbsdelf
before i386-netbsd, plus the new i386/netbsd-elf.h file itself.
can someone commit this if it is OK? thanks.
.mrg.
2001-07-12 matthew green <mrg@eterna.com.au>
* config.gcc (i386-*-netbsdelf): New description.
* config/i386/netbsd-elf.h: New file.
Index: config.gcc
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config.gcc,v
retrieving revision 1.70
diff -p -r1.70 config.gcc
*** config.gcc 2001/06/28 19:55:51 1.70
--- config.gcc 2001/07/13 19:12:25
*************** i[34567]86-*-freebsd[12] | i[34567]86-*-
*** 1052,1057 ****
--- 1052,1062 ----
i[34567]86-*-freebsd*)
tm_file="${tm_file} i386/att.h svr4.h ${fbsd_tm_file} i386/freebsd.h"
;;
+ i[34567]86-*-netbsdelf*)
+ tm_file=i386/netbsd-elf.h
+ tmake_file=t-netbsd
+ use_collect2=yes
+ ;;
i[34567]86-*-netbsd*)
tm_file=i386/netbsd.h
tmake_file=t-netbsd
and config/i386/netbsd-elf.h itself:
/* Definitions of target machine for GNU compiler,
for i386/ELF NetBSD systems.
Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by matthew green <mrg@eterna.com.au>
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. */
/*
* NetBSD/i386 ELF wants this, but we need to clean up afterwards
*/
#include <i386/gstabs.h>
#undef TARGET_VERSION
#undef BSS_SECTION_ASM_OP
#undef SHIFT_DOUBLE_OMITS_COUNT
#undef ASM_SHORT
#undef ASM_OUTPUT_SKIP
#undef ASM_OUTPUT_ALIGN
#undef ASM_OUTPUT_IDENT
#undef CPP_PREDEFINES
/*
* We are almost this.
*/
#include "i386/att.h"
#include "svr4.h"
/* Get generic NetBSD ELF definitions. We will override these if necessary.
We depend on OBJECT_FORMAT_ELF being defined from "i386/i386elf.h", via
it including "elfos.h". */
#include <netbsd.h>
/* Provide a LIB_SPEC appropriate for NetBSD. Just select the appropriate
libc, depending on whether we're doing profiling; if `-posix' is specified,
link against the appropriate libposix first. */
#undef LIB_SPEC
#define LIB_SPEC \
"%{posix:%{!p:%{!pg:-lposix}}%{p:-lposix_p}%{pg:-lposix_p}} \
%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
/* Provide a STARTFILE_SPEC appropriate for NetBSD ELF targets. Here we
provide support for the special GCC option -static. On ELF targets,
we also add the crtbegin.o file which provides part of the support
for getting C++ file-scope static objects constructed before entering
`main'. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt0%O%s} \
%{!pg: \
%{p:gcrt0%O%s} \
%{!p:crt0%O%s}}} \
%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}"
/* Provide an ENDFILE_SPEC approrpiate for NetBSD ELF targets. Here we
add crtend.o, which provides part of the support for getting C++
file-scope static objects deconstructed after exiting `main'. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
/* Names to predefine in the preprocessor for this target machine. */
/* NetBSD Extension to GNU C: __KPRINTF_ATTRIBUTE__ */
#undef CPP_PREDEFINES
#ifdef HAVE_KPRINTF_ATTRIBUTE
#define CPP_PREDEFINES "\
-Di386 -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__ \
-Asystem(unix) -Asystem(NetBSD)"
#else
#define CPP_PREDEFINES "\
-Di386 -D__NetBSD__ -D__ELF__ \
-Asystem(unix) -Asystem(NetBSD)"
#endif /* HAVE_KPRINTF_ATTRIBUTE */
/* Make gcc agree with <machine/ansi.h> */
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_UNSIGNED
#define WCHAR_UNSIGNED 0
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* Output assembler code to FILE to increment profiler label # LABELNO
for profiling a function entry. Under NetBSD/i386, the assembler does
nothing special with -pg. */
#undef ASM_APP_ON
#define ASM_APP_ON "#APP\n"
#undef ASM_APP_OFF
#define ASM_APP_OFF "#NO_APP\n"
#undef ASM_FINAL_SPEC
#define ASM_FINAL_SPEC "%{pipe:-}"
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
#undef NO_PROFILE_COUNTERS
#define NO_PROFILE_COUNTERS
#define bsd4_4
#undef HAS_INIT_SECTION
/* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. Only
the linker emulation is i386-specific. The rest are
common to all ELF targets, except for the name of the start function. */
#undef LINK_SPEC
#define LINK_SPEC \
"-m elf_i386 \
%{assert*} %{R*} \
%{shared:-shared} \
%{!shared: \
-dc -dp \
%{!nostdlib:%{!r*:%{!e*:-e __start}}} \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}} \
%{static:-static}}"
#undef DEFAULT_VTABLE_THUNKS
#define DEFAULT_VTABLE_THUNKS 1
/* This is how we tell the assembler that two symbols have the same value. */
#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
do { assemble_name(FILE, NAME1); \
fputs(" = ", FILE); \
assemble_name(FILE, NAME2); \
fputc('\n', FILE); } while (0)
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
bytes if it is within MAX_SKIP bytes.
This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
if ((LOG) != 0) { \
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
}
#endif
/*
* We always use gas here, so we don't worry about ECOFF assembler problems.
*/
#undef TARGET_GAS
#define TARGET_GAS 1
/* Default to pcc-struct-return, because this is the ELF abi and
we don't care about compatibility with older gcc versions. */
#define DEFAULT_PCC_STRUCT_RETURN 1
/** We don't have the C++ support for this (yet). */
#undef DWARF2_UNWIND_INFO
#define DWARF2_UNWIND_INFO 0
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (NetBSD/i386 ELF target)");