* config.gcc (i386-*-netbsdelf): New description.

        * config/i386/netbsd-elf.h: New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44525 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 181 insertions, 0 deletions

diff --git a/gcc/config/i386/netbsd-elf.h b/gcc/config/i386/netbsd-elf.h
new file mode 100644
index 00000000000..5188ef4ac2f
--- /dev/null
+++ b/gcc/config/i386/netbsd-elf.h
@@ -0,0 +1,181 @@
+/* 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.  */
+
+/* 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
+
+/*
+ * 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)");