Johns release

1 files changed, 133 insertions, 0 deletions

diff --git a/gdb/sun3-xdep.c b/gdb/sun3-xdep.c
new file mode 100644
index 0000000..6789cd6
--- /dev/null
+++ b/gdb/sun3-xdep.c
@@ -0,0 +1,133 @@
+/* Sun-3 Machine-dependent code which would otherwise be in inflow.c and core.c,
+   for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include "defs.h"
+#include "param.h"
+#include "inferior.h"
+
+#include <sys/ptrace.h>
+#define KERNEL		/* To get floating point reg definitions */
+#include <machine/reg.h>
+
+#include "gdbcore.h"
+
+extern int errno;
+
+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))
+      {
+	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);
+      }
+    else
+      fprintf (stderr, "Couldn't read float regs from core file\n");
+  }
+}