Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@10828 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 269 insertions, 0 deletions

diff --git a/gcc/config/i386/dgux.h b/gcc/config/i386/dgux.h
new file mode 100644
index 00000000000..5b461c49259
--- /dev/null
+++ b/gcc/config/i386/dgux.h
@@ -0,0 +1,269 @@
+/* Target definitions for GNU compiler for Intel 80x86 running DG/ux
+   Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+
+   Currently maintained by (gcc@dg-rtp.dg.com)
+
+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.  */
+
+/* for now, we are just like the sysv4 version with a
+   few hacks
+*/
+
+#include "i386/sysv4.h"
+
+#ifndef VERSION_INFO2
+#define VERSION_INFO2   "$Revision$"
+#endif
+
+#ifndef VERSION_STRING
+#define VERSION_STRING  version_string
+#endif
+
+/* Identify the compiler.  */
+/* TARGET_VERSION used by toplev.c VERSION_STRING used by -midentify-revision */
+
+#undef	TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (%s%s, %s)", \
+				VERSION_INFO1, VERSION_INFO2, __DATE__)
+#undef  VERSION_INFO1
+#define VERSION_INFO1 "ix86 DG/ux, "
+
+/* Augment TARGET_SWITCHES with the MXDB options.  */
+#define MASK_STANDARD		0x40000000 /* Retain standard information */
+#define MASK_NOLEGEND		0x20000000 /* Discard legend information */
+#define MASK_EXTERNAL_LEGEND	0x10000000 /* Make external legends */
+#define MASK_IDENTIFY_REVISION  0x08000000 /* Emit 'ident' to .s */
+#define MASK_WARN_PASS_STRUCT   0x04000000 /* Emit 'ident' to .s */
+
+#define TARGET_STANDARD		  (target_flags & MASK_STANDARD)
+#define TARGET_NOLEGEND		  (target_flags & MASK_NOLEGEND)
+#define TARGET_EXTERNAL_LEGEND	  (target_flags & MASK_EXTERNAL_LEGEND)
+#define TARGET_IDENTIFY_REVISION  (target_flags & MASK_IDENTIFY_REVISION)
+#define TARGET_WARN_PASS_STRUCT   (target_flags & MASK_WARN_PASS_STRUCT)
+
+#undef  SUBTARGET_SWITCHES
+#define SUBTARGET_SWITCHES \
+    { "standard",			 MASK_STANDARD },          \
+    { "legend",				-MASK_NOLEGEND },          \
+    { "no-legend",			 MASK_NOLEGEND },          \
+    { "external-legend",		 MASK_EXTERNAL_LEGEND },   \
+    { "identify-revision", 		 MASK_IDENTIFY_REVISION }, \
+    { "warn-passed-structs", 		 MASK_WARN_PASS_STRUCT },
+
+#undef  DWARF_DEBUGGING_INFO
+#define DWARF_DEBUGGING_INFO
+
+/*
+  allow -gstabs so that those who have gnu-as installed
+  can debug c++ programs.
+*/
+#undef  DBX_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
+
+#define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
+
+/* Override svr[34].h.  */
+#undef	ASM_FILE_START
+#define ASM_FILE_START(FILE) \
+  output_file_start (FILE, f_options, sizeof f_options / sizeof f_options[0], \
+		     W_options, sizeof W_options / sizeof W_options[0])
+
+/* ix86 abi specified type for wchar_t */
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+
+/* Define this to be nonzero if the character `$' should be allowed
+   by default in identifier names.  DG/ux does this differently than
+   standard i386 */
+
+#undef  DOLLARS_IN_IDENTIFIERS
+#define DOLLARS_IN_IDENTIFIERS  1
+
+/* Some machines may desire to change what optimizations are performed for
+   various optimization levels.   This macro, if defined, is executed once
+   just after the optimization level is determined and before the remainder
+   of the command options have been parsed.  Values set in this macro are
+   used as the default values for the other command line options.
+
+   LEVEL is the optimization level specified; 2 if -O2 is specified,
+   1 if -O is specified, and 0 if neither is specified.  */
+
+/* This macro used to store 0 in flag_signed_bitfields.
+   Not only is that misuse of this macro; the whole idea is wrong.
+
+   The GNU C dialect makes bitfields signed by default,
+   regardless of machine type.  Making any machine inconsistent in this
+   regard is bad for portability.
+
+   I chose to make bitfields signed by default because this is consistent
+   with the way ordinary variables are handled: `int' equals `signed int'.
+   If there is a good reason to prefer making bitfields unsigned by default,
+   it cannot have anything to do with the choice of machine.
+   If the reason is good enough, we should change the convention for all machines.
+
+   -- rms, 20 July 1991.  */
+
+/*
+  this really should go into dgux-local.h 
+*/
+
+#undef	OPTIMIZATION_OPTIONS
+#define OPTIMIZATION_OPTIONS(LEVEL)			\
+  do {							\
+    extern int flag_signed_bitfields;			\
+    flag_signed_bitfields = 0;				\
+    abort_helper ();					\
+  } while (0)
+
+
+/* The normal location of the `ld' and `as' programs */
+
+#undef MD_EXEC_PREFIX
+#define MD_EXEC_PREFIX "/usr/bin/"
+
+/* The normal location of the various *crt*.o files is the */
+
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/usr/lib/"
+
+/* Macros to be automatically defined.  
+   __CLASSIFY_TYPE__ is used in the <varargs.h> and <stdarg.h> header
+   files with DG/UX revision 5.40 and later.  This allows GNU CC to
+   operate without installing the header files.  */
+
+#undef	CPP_PREDEFINES
+#define CPP_PREDEFINES "-Di386 -D__ix86 -Dunix -DDGUX -D__CLASSIFY_TYPE__=2\
+   -Asystem(unix) -Asystem(svr4) -Acpu(i386) -Amachine(i386)"
+
+   /*
+     If not -ansi, -traditional, or restricting include files to one
+     specific source target, specify full DG/UX features.
+   */
+#undef	CPP_SPEC
+#define	CPP_SPEC "%{!ansi:%{!traditional:-D__OPEN_NAMESPACE__}}"
+
+/* Assembler support (legends for mxdb).  */
+#undef	ASM_SPEC
+#define ASM_SPEC "\
+%{mno-legend:%{mstandard:-Wc,off}}\
+%{g:%{!mno-legend:-Wc,-fix-bb,-s\"%i\"\
+%{traditional:,-lc}%{!traditional:,-lansi-c}\
+%{mstandard:,-keep-std}\
+%{mexternal-legend:,-external}}}"
+
+/* Override svr4.h.  */
+
+/* hassey 3/12/94 keep svr4 ASM_FINAL_SPEC allows -pipe to work */
+
+/* Linker and library spec's.
+   -static, -shared, -symbolic, -h* and -z* access AT&T V.4 link options.
+   -svr4 instructs gcc to place /usr/lib/values-X[cat].o on link the line.
+   The absense of -msvr4 indicates linking done in a COFF environment and
+   adds the link script to the link line.  In all environments, the first
+   and last objects are crtbegin.o and crtend.o.
+   When the -G link option is used (-shared and -symbolic) a final link is
+   not being done.  */
+
+#undef	LIB_SPEC
+#define LIB_SPEC \
+"%{!shared:%{!symbolic:-lc}}"
+
+#undef	LINK_SPEC
+#define LINK_SPEC "%{z*} %{h*} %{V} %{v:%{!V:-V}} \
+		   %{static:-dn -Bstatic} \
+		   %{shared:-G -dy} \
+		   %{symbolic:-Bsymbolic -G -dy} \
+		   %{pg:-L/usr/lib/libp}%{p:-L/usr/lib/libp}"
+
+#ifdef CROSS_COMPILE
+
+#undef	STARTFILE_SPEC
+#define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt1.o%s} 		\
+			                      %{!pg:%{p:mcrt1.o%s} 	\
+					      %{!p:crt1.o%s}}}} 	\
+			 %{pg:gcrti.o%s}%{!pg:crti.o%s} 		\
+			 crtbegin.o%s 					\
+			 %{ansi:values-Xc.o%s} 				\
+			 %{!ansi:%{traditional:values-Xt.o%s} 		\
+			         %{!traditional:values-Xa.o%s}}"
+
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:crtn.o%s}"
+
+#else
+
+#undef	STARTFILE_SPEC
+#define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt1.o%s} 		\
+			                      %{!pg:%{p:/lib/mcrt1.o%s}	\
+					      %{!p:/lib/crt1.o%s}}} 	\
+			%{pg:gcrti.o%s}%{!pg:/lib/crti.o%s}} 		\
+			crtbegin.o%s 					\
+			%{ansi:/lib/values-Xc.o%s} 			\
+			%{!ansi:%{traditional:/lib/values-Xt.o%s} 	\
+			        %{!traditional:/lib/values-Xa.o%s}}"
+
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:/lib/crtn.o}"
+
+#endif /* CROSS_COMPILE */
+
+#if !defined (no_abort) || defined (CRT_BEGIN) || defined (CRT_END)
+#undef abort
+
+char insn; int insn_; char * file_; int line_;
+#define abort()			\
+  (insn_ = (int) insn,		\
+   file_ = __FILE__,		\
+   line_ = __LINE__,		\
+   fancy_abort ())
+#define abort_helper()		\
+  do {				\
+    extern void abort_aux ();	\
+    atexit (abort_aux);		\
+  } while (0)
+#define _abort_aux
+#endif /* no abort */
+
+/* The maximum alignment which the object file format can support.
+   page alignment would seem to be enough */
+#undef MAX_OFILE_ALIGNMENT
+#define MAX_OFILE_ALIGNMENT 0x1000
+
+/* Must use data section for relocatable constants when pic.  */
+#undef SELECT_RTX_SECTION
+#define SELECT_RTX_SECTION(MODE,RTX)            \
+{                                               \
+  if (flag_pic && symbolic_operand (RTX))       \
+    data_section ();                            \
+  else                                          \
+    const_section ();                           \
+}
+
+/* This supplements FUNCTION_ARG's definition in i386.h to check
+   TARGET_WARN_PASS_STRUCT */
+
+#undef  FUNCTION_ARG
+#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
+((((MODE) == BLKmode && TARGET_WARN_PASS_STRUCT) ? \
+    warning ("argument is a structure"),0 : 0), \
+    (function_arg (&CUM, MODE, TYPE, NAMED)))
+