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Re: target/5410: NetBSD/i386/ELF configuration should be pushed to 3.0 branch
- From: Craig Rodrigues <rodrigc at mediaone dot net>
- To: gcc-gnats at gcc dot gnu dot org
- Cc: gcc-patches at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, zack at codesourcery dot com, nobody at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org, mark at codesourcery dot com
- Date: Thu, 17 Jan 2002 23:59:30 -0500
- Subject: Re: target/5410: NetBSD/i386/ELF configuration should be pushed to 3.0 branch
Hi,
Seems reasonable to me for 3.0.4, but not my
call to make.
--
Craig Rodrigues
http://www.gis.net/~craigr
rodrigc@mediaone.net
2002-01-17 Zack Weinberg <zack@codesourcery.com>
PR target/5410
* config/i386/netbsd-elf.h: Added.
* config.gcc (i[34567]86-*-netbsdelf*): Added.
Index: config.gcc
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config.gcc,v
retrieving revision 1.27.2.18
diff -u -p -r1.27.2.18 config.gcc
--- config.gcc 2001/11/18 00:29:45 1.27.2.18
+++ config.gcc 2002/01/17 09:11:18
@@ -1134,6 +1134,13 @@ i[34567]86-*-freebsd[12] | i[34567]86-*-
i[34567]86-*-freebsd*)
tm_file="${tm_file} i386/att.h svr4.h ${fbsd_tm_file} i386/freebsd.h i386/perform.h"
;;
+i[34567]86-*-netbsdelf*)
+ xm_defines=POSIX
+ tm_file="${tm_file} i386/att.h svr4.h i386/netbsd-elf.h"
+ tmake_file=t-netbsd
+ gnu_ld=yes
+ float_format=i386
+ ;;
i[34567]86-*-netbsd*)
tm_file=i386/netbsd.h
tmake_file=t-netbsd
Index: config/i386/netbsd-elf.h
===================================================================
RCS file: netbsd-elf.h
diff -N netbsd-elf.h
--- /dev/null Tue May 5 13:32:27 1998
+++ netbsd-elf.h Thu Jan 17 01:11:18 2002
@@ -0,0 +1,192 @@
+/* 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, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* 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'. We use the NetBSD crt0. */
+
+#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}"
+
+/* 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: \
+ -dp \
+ %{!nostdlib:%{!r*:%{!e*:-e __start}}} \
+ %{!static: \
+ -dy %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}} \
+ %{static:-static}}"
+
+/* Provide a CPP_SPEC appropriate for NetBSD. Current we just deal with
+ the GCC option `-posix'. */
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
+
+/* Provide an ASM_SPEC appropriate for NetBSD. Currently we only deal
+ with the options for generating PIC code. */
+
+#undef ASM_SPEC
+#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
+
+/* Provide a LIB_SPEC appropriate for NetBSD. Just select the appropriate
+ libc, depending on whether we're doing profiling. */
+
+#undef LIB_SPEC
+#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
+
+/* This defines which switch letters take arguments. */
+#undef SWITCH_TAKES_ARG
+#define SWITCH_TAKES_ARG(CHAR) \
+ (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
+ || (CHAR) == 'R')
+
+/* Implicit library calls should use memcpy, not bcopy, etc. */
+
+#define TARGET_MEM_FUNCTIONS
+
+/* Names to predefine in the preprocessor for this target machine. */
+
+#define CPP_PREDEFINES "\
+-Di386 -D__NetBSD__ -D__ELF__ -Asystem(unix) -Asystem(NetBSD)"
+
+/* 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
+
+#undef WINT_TYPE
+#define WINT_TYPE "int"
+
+/* 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
+
+#undef HAS_INIT_SECTION
+
+#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
+
+/* This is how to output an element of a case-vector that is relative.
+ This is only used for PIC code. */
+#undef ASM_OUTPUT_ADDR_DIFF_ELT
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+ fprintf ((FILE), "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
+
+/* Indicate that jump tables go in the text section. This is
+ necessary when compiling PIC code. */
+#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
+
+/*
+ * 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
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (NetBSD/i386 ELF target)");