Added support for hosting on an Apollo Series 400 processor (under

System V emulation), and targeted towards an OS/68000 system.

4 files changed, 405 insertions, 0 deletions

diff --git a/gdb/a68v-xdep.c b/gdb/a68v-xdep.c
new file mode 100644
index 0000000..e9cf597
--- /dev/null
+++ b/gdb/a68v-xdep.c
@@ -0,0 +1,153 @@
+/* Host-dependent code for Apollo-68ksfor GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 1991 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 <stdio.h>
+#include "defs.h"
+#include "inferior.h"
+#include "gdbcore.h"
+
+extern int errno;
+
+#if defined (GDB_TARGET_IS_SUN3)
+/* All of this stuff is only relevant if both host and target are sun3.  */
+void
+fetch_inferior_registers ()
+{
+  struct regs inferior_registers;
+#ifdef FP0_REGNUM
+  struct fp_status inferior_fp_registers;
+#endif
+  extern char registers[];
+
+  registers_fetched ();
+  
+  ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
+#ifdef FP0_REGNUM
+  ptrace (PTRACE_GETFPREGS, inferior_pid, &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).  */
+
+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, &inferior_registers);
+#if FP0_REGNUM
+  ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
+#endif
+}
+
+/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
+
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+{
+  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, &regs->r_ps);
+    supply_register (PC_REGNUM, &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");
+  }
+}
+#else /* Not sun3 target.  */
+/* These functions shouldn't be called when we're cross-debugging.  */
+
+void
+fetch_inferior_registers ()
+{
+}
+
+/* ARGSUSED */
+store_inferior_registers (regno)
+     int regno;
+{
+}
+
+/* ARGSUSED */
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+{
+}
+#endif /* Not sun3 target.  */
diff --git a/gdb/os68k-xdep.c b/gdb/os68k-xdep.c
new file mode 100644
index 0000000..295dff8
--- /dev/null
+++ b/gdb/os68k-xdep.c
@@ -0,0 +1,157 @@
+/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 1991 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 <stdio.h>
+#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>
+
+extern int errno;
+
+#if defined (GDB_TARGET_IS_SUN3)
+/* All of this stuff is only relevant if both host and target are sun3.  */
+void
+fetch_inferior_registers ()
+{
+  struct regs inferior_registers;
+#ifdef FP0_REGNUM
+  struct fp_status inferior_fp_registers;
+#endif
+  extern char registers[];
+
+  registers_fetched ();
+  
+  ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers);
+#ifdef FP0_REGNUM
+  ptrace (PTRACE_GETFPREGS, inferior_pid, &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).  */
+
+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, &inferior_registers);
+#if FP0_REGNUM
+  ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers);
+#endif
+}
+
+/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
+
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+{
+  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, &regs->r_ps);
+    supply_register (PC_REGNUM, &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");
+  }
+}
+#else /* Not sun3 target.  */
+/* These functions shouldn't be called when we're cross-debugging.  */
+
+void
+fetch_inferior_registers ()
+{
+}
+
+/* ARGSUSED */
+store_inferior_registers (regno)
+     int regno;
+{
+}
+
+/* ARGSUSED */
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+{
+}
+#endif /* Not sun3 target.  */
diff --git a/gdb/tm-os68k.h b/gdb/tm-os68k.h
new file mode 100644
index 0000000..1c8ca74
--- /dev/null
+++ b/gdb/tm-os68k.h
@@ -0,0 +1,47 @@
+/* Parameters for execution on VxWorks 68k's, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+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.  */
+
+#define	GDBINIT_FILENAME	".os68gdbinit"
+
+#define	DEFAULT_PROMPT		"(os68k) "
+
+#include "tm-68k.h"
+
+/* We have more complex, useful breakpoints on the target.  */
+#undef DECR_PC_AFTER_BREAK
+#define	DECR_PC_AFTER_BREAK	0
+
+/* We are guaranteed to have a zero frame pointer at bottom of stack, too. */
+#undef	FRAME_CHAIN
+#undef	FRAME_CHAIN_VALID
+
+/* Takes the current frame-struct pointer and returns the chain-pointer
+   to get to the calling frame.
+
+   If our current frame pointer is zero, we're at the top; else read out
+   the saved FP from memory pointed to by the current FP.  */
+
+#define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0)
+
+/* If the chain pointer is zero (either because the saved value fetched
+   by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN
+   never fetched anything), we are at the top of the stack.  */
+
+#define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0)
diff --git a/gdb/xm-apollo68v.h b/gdb/xm-apollo68v.h
new file mode 100644
index 0000000..49068e4
--- /dev/null
+++ b/gdb/xm-apollo68v.h
@@ -0,0 +1,48 @@
+/* Macro defintions for an Apollo.
+   Copyright (C) 1986, 1987, 1989 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.  */
+
+/*
+ * Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu)
+ * July 1988
+ */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* I'm running gdb 3.4 under 386/ix 2.0.2, which is a derivative of AT&T's
+Sys V/386 3.2.
+
+On some machines, gdb crashes when it's starting up while calling the
+vendor's termio tgetent() routine.  It always works when run under
+itself (actually, under 3.2, it's not an infinitely recursive bug.)
+After some poking around, it appears that depending on the environment
+size, or whether you're running YP, or the phase of the moon or something,
+the stack is not always long-aligned when main() is called, and tgetent()
+takes strong offense at that.  On some machines this bug never appears, but
+on those where it does, it occurs quite reliably.  */
+#define ALIGN_STACK_ON_STARTUP
+
+/* define USG if you are using sys5 /usr/include's */
+#define USG
+
+#define HAVE_TERMIO
+
+#define	FETCH_INFERIOR_REGISTERS
+
+#define	SYS_SIGLIST_MISSING	0	/* we have it on the apollo */
+