Sun3 native support.

* config/sun3os3.mh, config/sun3os4.mh (NAT_FILE, NATDEPFILES):
  new macros for native support.
  (XDEPFILES): moved infptrace.o and inftarg.o to NATDEPFILES,
  removed sun3-xdep.o.
* xm-sun3.h (ATTACH_DETACH, FETCH_INFERIOR_REGISTERS): moved to
  nm-sun3.h.
* sun3-xdep.c: removed.  All code is now in sun3-nat.c.
* sun3-nat.c, nm-sun3.h: new files for native support.

6 files changed, 193 insertions, 10 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2e64487..f4bb174 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,26 @@
+Thu Oct  1 14:36:42 1992  K. Richard Pixley  (rich@sendai.cygnus.com)
+
+	Sun3 native support.
+
+	* config/sun3os3.mh, config/sun3os4.mh (NAT_FILE, NATDEPFILES):
+	  new macros for native support.
+	  (XDEPFILES): moved infptrace.o and inftarg.o to NATDEPFILES,
+	  removed sun3-xdep.o.
+	* xm-sun3.h (ATTACH_DETACH, FETCH_INFERIOR_REGISTERS): moved to
+	  nm-sun3.h.
+	* sun3-xdep.c: removed.  All code is now in sun3-nat.c.
+	* sun3-nat.c, nm-sun3.h: new files for native support.
+
+Thu Oct  1 10:30:54 1992  Fred Fish  (fnf@cygnus.com)
+
+	* dwarfread.c (dbsize):  New variable to hold size of dwarf info.
+	* dwarfread.c (dwarf_build_psymtabs):  Rename dbsize parameter to 
+	dbfsize and use it to initialize new local file scope dbsize.
+	* dwarfread.c (read_ofile_symtab):  Initialize dbsize and use it.
+	* dwarfread.c (basicdieinfo):  Use dbsize to check for oversize
+	DIEs as well as the current check for undersize DIEs.  This helps
+	to gracefully detect and reject corrupted DIE information.
+
 Thu Oct  1 01:57:56 1992  John Gilmore  (gnu@cygnus.com)
 
 	Add `command hooks' and a hook for inferior program stopping.
diff --git a/gdb/config/sun3os3.mh b/gdb/config/sun3os3.mh
index cd60af2..2d4c451 100644
--- a/gdb/config/sun3os3.mh
+++ b/gdb/config/sun3os3.mh
@@ -1,3 +1,5 @@
 # Host: Sun 3, running SunOS 3
-XDEPFILES= infptrace.o inftarg.o fork-child.o sun3-xdep.o
+XDEPFILES= fork-child.o
 XM_FILE= xm-sun3.h
+NAT_FILE= nm-sun3.h
+NATDEPFILES= inftarg.o infptrace.o inftarg.o corelow.o sun3-nat.o
diff --git a/gdb/config/sun3os4.mh b/gdb/config/sun3os4.mh
index 7ea5dca..747cf76 100644
--- a/gdb/config/sun3os4.mh
+++ b/gdb/config/sun3os4.mh
@@ -1,3 +1,5 @@
 # Host: Sun 3, running SunOS 4
-XDEPFILES= infptrace.o inftarg.o fork-child.o sun3-xdep.o
+XDEPFILES= fork-child.o
 XM_FILE= xm-sun3os4.h
+NAT_FILE= nm-sun3.h
+NATDEPFILES= inftarg.o infptrace.o inftarg.o corelow.o sun3-nat.o
diff --git a/gdb/nm-sun3.h b/gdb/nm-sun3.h
new file mode 100644
index 0000000..31972bb
--- /dev/null
+++ b/gdb/nm-sun3.h
@@ -0,0 +1,26 @@
+/* Host-dependent definitions for Sun-3 for GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+
+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.  */
+
+/* Do implement the attach and detach commands.  */
+
+#define ATTACH_DETACH
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
+
+#define FETCH_INFERIOR_REGISTERS
diff --git a/gdb/sun3-nat.c b/gdb/sun3-nat.c
new file mode 100644
index 0000000..082ee0f
--- /dev/null
+++ b/gdb/sun3-nat.c
@@ -0,0 +1,138 @@
+/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+
+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.  */
+
+#include "defs.h"
+#include "inferior.h"
+#include "gdbcore.h"
+
+#include <sys/ptrace.h>
+#define KERNEL		/* To get floating point reg definitions */
+#include <machine/reg.h>
+
+void
+fetch_inferior_registers (regno)
+     int regno;
+{
+  struct regs inferior_registers;
+#ifdef FP0_REGNUM
+  struct fp_status inferior_fp_registers;
+#endif
+  extern char registers[];
+
+  registers_fetched ();
+  
+  ptrace (PTRACE_GETREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_registers);
+#ifdef FP0_REGNUM
+  ptrace (PTRACE_GETFPREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_fp_registers);
+#endif 
+  
+  bcopy (&inferior_registers, registers, 16 * 4);
+#ifdef FP0_REGNUM
+  bcopy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
+	 sizeof inferior_fp_registers.fps_regs);
+#endif 
+  *(int *)&registers[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
+  *(int *)&registers[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
+#ifdef FP0_REGNUM
+  bcopy (&inferior_fp_registers.fps_control,
+	 &registers[REGISTER_BYTE (FPC_REGNUM)],
+	 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
+#endif 
+}
+
+/* Store our register values back into the inferior.
+   If REGNO is -1, do this for all registers.
+   Otherwise, REGNO specifies which register (so we can save time).  */
+
+void
+store_inferior_registers (regno)
+     int regno;
+{
+  struct regs inferior_registers;
+#ifdef FP0_REGNUM
+  struct fp_status inferior_fp_registers;
+#endif
+  extern char registers[];
+
+  bcopy (registers, &inferior_registers, 16 * 4);
+#ifdef FP0_REGNUM
+  bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
+	 sizeof inferior_fp_registers.fps_regs);
+#endif
+  inferior_registers.r_ps = *(int *)&registers[REGISTER_BYTE (PS_REGNUM)];
+  inferior_registers.r_pc = *(int *)&registers[REGISTER_BYTE (PC_REGNUM)];
+
+#ifdef FP0_REGNUM
+  bcopy (&registers[REGISTER_BYTE (FPC_REGNUM)],
+	 &inferior_fp_registers.fps_control,
+	 sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
+#endif
+
+  ptrace (PTRACE_SETREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_registers);
+#if FP0_REGNUM
+  ptrace (PTRACE_SETFPREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_fp_registers);
+#endif
+}
+
+
+/* All of this stuff is only relevant if both host and target are sun3.  */
+/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
+
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+     unsigned int reg_addr;	/* Unused in this version */
+{
+  extern char registers[];
+  struct regs *regs = (struct regs *) core_reg_sect;
+
+  if (which == 0) {
+    if (core_reg_size < sizeof (struct regs))
+      error ("Can't find registers in core file");
+
+    bcopy ((char *)regs, registers, 16 * 4);
+    supply_register (PS_REGNUM, (char *)&regs->r_ps);
+    supply_register (PC_REGNUM, (char *)&regs->r_pc);
+
+  } else if (which == 2) {
+
+#define fpustruct  ((struct fpu *) core_reg_sect)
+
+    if (core_reg_size >= sizeof (struct fpu))
+      {
+#ifdef FP0_REGNUM
+	bcopy (fpustruct->f_fpstatus.fps_regs,
+	      &registers[REGISTER_BYTE (FP0_REGNUM)],
+	      sizeof fpustruct->f_fpstatus.fps_regs);
+	bcopy (&fpustruct->f_fpstatus.fps_control,
+	      &registers[REGISTER_BYTE (FPC_REGNUM)],
+	      sizeof fpustruct->f_fpstatus - 
+		sizeof fpustruct->f_fpstatus.fps_regs);
+#endif
+      }
+    else
+      fprintf (stderr, "Couldn't read float regs from core file\n");
+  }
+}
diff --git a/gdb/xm-sun3.h b/gdb/xm-sun3.h
index bd5eeaa..3970929 100644
--- a/gdb/xm-sun3.h
+++ b/gdb/xm-sun3.h
@@ -27,14 +27,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #define NEW_SUN_CORE
 
-/* Do implement the attach and detach commands.  */
-
-#define ATTACH_DETACH
-
-/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
-
-#define FETCH_INFERIOR_REGISTERS
-
 /* We have to grab the regs since we store all regs at once.  */
 
 #define CHILD_PREPARE_TO_STORE() \