Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 157 insertions, 0 deletions

diff --git a/gdb/sun3-nat.c b/gdb/sun3-nat.c
new file mode 100644
index 0000000..30f4a44
--- /dev/null
+++ b/gdb/sun3-nat.c
@@ -0,0 +1,157 @@
+/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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>
+
+static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
+
+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 
+  
+  memcpy (registers, &inferior_registers, 16 * 4);
+#ifdef FP0_REGNUM
+  memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
+	 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
+  memcpy (&registers[REGISTER_BYTE (FPC_REGNUM)],
+	 &inferior_fp_registers.fps_control,
+	 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[];
+
+  memcpy (&inferior_registers, registers, 16 * 4);
+#ifdef FP0_REGNUM
+  memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
+	 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
+  memcpy (&inferior_fp_registers.fps_control,
+	 &registers[REGISTER_BYTE (FPC_REGNUM)],
+	 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. */
+
+static void
+fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+     char *core_reg_sect;
+     unsigned core_reg_size;
+     int which;
+     CORE_ADDR 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");
+
+    memcpy (registers, (char *)regs, 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
+	memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)],
+	      fpustruct->f_fpstatus.fps_regs,
+	      sizeof fpustruct->f_fpstatus.fps_regs);
+	memcpy (&registers[REGISTER_BYTE (FPC_REGNUM)],
+	      &fpustruct->f_fpstatus.fps_control,
+	      sizeof fpustruct->f_fpstatus - 
+		sizeof fpustruct->f_fpstatus.fps_regs);
+#endif
+      }
+    else
+      fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
+  }
+}
+
+
+/* Register that we are able to handle sun3 core file formats.
+   FIXME: is this really bfd_target_unknown_flavour? */
+
+static struct core_fns sun3_core_fns =
+{
+  bfd_target_unknown_flavour,
+  fetch_core_registers,
+  NULL
+};
+
+void
+_initialize_core_sun3 ()
+{
+  add_core_fns (&sun3_core_fns);
+}