Add tm-i386v4.h and xm-i386v4.h to Sanitize, add i386/SVR4 to configuration

file, recognize names beginning with '.' as compiler generated "fake" tags
for anonymous structures, unions and enums.  Add target dependent functions
for SVR4 /proc register interface (i386-tdep.c).

gdb/.Sanitize

@@ -201,6 +201,7 @@ tm-hp300bsd.h
 tm-hp300hpux.h
 tm-i386v-g.h
 tm-i386v.h
+tm-i386v4.h
 tm-i960.h
 tm-irix3.h
 tm-isi.h
@@ -254,6 +255,7 @@ xm-hp300hpux.h
 xm-i386mach.h
 xm-i386sco.h
 xm-i386v.h
+xm-i386v4.h
 xm-i386v32.h
 xm-irix3.h
 xm-isi.h

gdb/ChangeLog

@@ -1,5 +1,23 @@
 Fri Nov 29 16:59:25 1991  Fred Fish  (fnf at cygnus.com)
 
+	* configure.in:  Add SVR4 i386 configurations.
+
+	* config/mh-i386v4, config/mt-i386v4, tm-i386v4.h, xm-i386v4.h:
+	New files for i386/SVR4.
+
+	* tm-i386v.h:  Allow START_INFERIOR_TRAPS_EXPECTED and
+	DECR_PC_AFTER_BREAK to be predefined by files including 
+	tm-i386v.h.
+
+	* i386-tdep.c:  Add supply_gregset(), fill_gregset(),
+	supply_fpregset(), and fill_fpregset() functions, which are
+	target dependent support functions for the SVR4 /proc register
+	interface.
+
+	* dwarfread.c (enum_type, struct_type):  Expand recognized
+	compiler generated tags to include symbols beginning with '.' as
+	well as '~'.
+
 	* symtab.c (sources_info):  Change simple printf of error message
 	to call to error().
 

gdb/configure.in

@@ -86,6 +86,7 @@ i386)
 		case "${host_os}" in
 		sysv)	gdb_host=i386v ;;
 		sysv32)	gdb_host=i386v32 ;;
+		svr4)	gdb_host=i386v4 ;;
 		mach)	gdb_host=i386mach ;;
 		esac
 		;;
@@ -242,6 +243,7 @@ i386)
 		case "${target_os}" in
 		sysv)	gdb_target=i386v ;;
 		sysv32)	gdb_target=i386v32 ;;
+		svr4)	gdb_target=i386v4 ;;
 		mach)	gdb_target=i386mach ;;
 		coff)	gdb_target=i386v ;;
 		aout)	gdb_target=i386aout ;;

gdb/dwarfread.c

@@ -926,7 +926,9 @@ DEFUN(struct_type, (dip, thisdie, enddie),
     }
   /* Some compilers try to be helpful by inventing "fake" names for anonymous
      enums, structures, and unions, like "~0fake".  Thanks, but no thanks. */
-  if (dip -> at_name == NULL || *dip -> at_name == '~')
+  if (dip -> at_name == NULL
+      || *dip -> at_name == '~'
+      || *dip -> at_name == '.')
     {
       tpart2 = "{...}";
     }
@@ -1345,7 +1347,9 @@ DEFUN(enum_type, (dip), struct dieinfo *dip)
   tpart1 = "enum ";
   /* Some compilers try to be helpful by inventing "fake" names for anonymous
      enums, structures, and unions, like "~0fake".  Thanks, but no thanks. */
-  if (dip -> at_name == NULL || *dip -> at_name == '~')
+  if (dip -> at_name == NULL
+      || *dip -> at_name == '~'
+      || *dip -> at_name == '.')
     {
       tpart2 = "{...}";
     } else {

gdb/tm-i386v.h

@@ -1,4 +1,4 @@
-/* Macro defintions for i386.
+/* Macro definitions for i386, Unix System V.
    Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
 
 This file is part of GDB.
@@ -42,7 +42,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  * to run an inferior, and when we finally get to 
  * the inferior code.  This is 2 on most implementations.
  */
+#ifndef START_INFERIOR_TRAPS_EXPECTED
 #define START_INFERIOR_TRAPS_EXPECTED 4
+#endif
 
 /* Offset from address of function to start of its code.
    Zero on most machines.  */
@@ -78,7 +80,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
    This is often the number of bytes in BREAKPOINT
    but not always.  */
 
+#ifndef DECR_PC_AFTER_BREAK
 #define DECR_PC_AFTER_BREAK 1
+#endif
 
 /* Nonzero if instruction at PC is a return instruction.  */
 

gdb/tm-i386v4.h

@@ -0,0 +1,38 @@
+/* Macro definitions for GDB on an Intel i386 running SVR4.
+   Copyright (C) 1991, Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+This file is part of GDB.
+
+This program 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 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Use the alternate method of determining valid frame chains. */
+
+#define FRAME_CHAIN_VALID_ALTERNATE
+
+/* number of traps that happen between exec'ing the shell 
+ * to run an inferior, and when we finally get to 
+ * the inferior code.  This is 2 on most implementations.
+ */
+#define START_INFERIOR_TRAPS_EXPECTED 2
+
+#include "tm-svr4.h"
+#include "tm-i386v.h"
+
+/* We can't tell how many args there are
+   now that the C compiler delays popping them.  */
+
+#undef FRAME_NUM_ARGS
+#define FRAME_NUM_ARGS(val,fi) (val = -1)

gdb/xm-i386v4.h

@@ -0,0 +1,28 @@
+/* Macro definitions for GDB on an Intel i386 running SVR4.
+   Copyright (C) 1991, Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+This file is part of GDB.
+
+This program 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 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Pick up most of what we need from the generic i386 host include file. */
+
+#include "xm-i386v.h"
+
+/* Pick up more stuff from the generic SVR4 host include file. */
+
+#include "xm-svr4.h"
+