hp300 native support

1 files changed, 233 insertions, 0 deletions

diff --git a/gdb/hp300ux-nat.c b/gdb/hp300ux-nat.c
new file mode 100644
index 0000000..f043acc
--- /dev/null
+++ b/gdb/hp300ux-nat.c
@@ -0,0 +1,233 @@
+/* HP/UX interface for HP 300's, for GDB when running under Unix.
+   Copyright (C) 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 "defs.h"
+#include "frame.h"
+#include "inferior.h"
+
+/* Defining this means some system include files define some extra stuff.  */
+#define WOPR
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <signal.h>
+#include <sys/user.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+#include <sys/ptrace.h>
+#include <sys/reg.h>
+#include <sys/trap.h>
+
+#include "gdbcore.h"
+
+#include <sys/file.h>
+#include <sys/stat.h>
+
+#define INFERIOR_AR0(u)							\
+  ((ptrace								\
+    (PT_RUAREA, inferior_pid,						\
+     (PTRACE_ARG3_TYPE) ((char *) &u.u_ar0 - (char *) &u), 0))		\
+   - KERNEL_U_ADDR)
+
+static void
+fetch_inferior_register (regno, regaddr)
+     register int regno;
+     register unsigned int regaddr;
+{
+#ifndef HPUX_VERSION_5
+  if (regno == PS_REGNUM)
+    {
+      union { int i; short s[2]; } ps_val;
+      int regval;
+      
+      ps_val.i = (ptrace (PT_RUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+			  0));
+      regval = ps_val.s[0];
+      supply_register (regno, &regval);
+    }
+  else
+#endif /* not HPUX_VERSION_5 */
+    {
+      char buf[MAX_REGISTER_RAW_SIZE];
+      register int i;
+      
+      for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+	{
+	  *(int *) &buf[i] = ptrace (PT_RUAREA, inferior_pid,
+				     (PTRACE_ARG3_TYPE) regaddr, 0);
+	  regaddr += sizeof (int);
+	}
+      supply_register (regno, buf);
+    }
+  return;
+}
+
+static void
+store_inferior_register_1 (regno, regaddr, value)
+     int regno;
+     unsigned int regaddr;
+     int value;
+{
+  errno = 0;
+  ptrace (PT_WUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, value);
+#if 0
+  /* HP-UX randomly sets errno to non-zero for regno == 25.
+     However, the value is correctly written, so ignore errno. */
+  if (errno != 0)
+    {
+      char string_buf[64];
+      
+      sprintf (string_buf, "writing register number %d", regno);
+      perror_with_name (string_buf);
+    }
+#endif
+  return;
+}
+
+static void
+store_inferior_register (regno, regaddr)
+     register int regno;
+     register unsigned int regaddr;
+{
+#ifndef HPUX_VERSION_5
+  if (regno == PS_REGNUM)
+    {
+      union { int i; short s[2]; } ps_val;
+      
+      ps_val.i = (ptrace (PT_RUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+			  0));
+      ps_val.s[0] = (read_register (regno));
+      store_inferior_register_1 (regno, regaddr, ps_val.i);
+    }
+  else
+#endif /* not HPUX_VERSION_5 */
+    {
+      char buf[MAX_REGISTER_RAW_SIZE];
+      register int i;
+      extern char registers[];
+      
+      for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+	{
+	  store_inferior_register_1
+	    (regno, regaddr,
+	     (*(int *) &registers[(REGISTER_BYTE (regno)) + i]));
+	  regaddr += sizeof (int);
+	}
+    }
+  return;
+}
+
+void
+fetch_inferior_registers (regno)
+     int regno;
+{
+  struct user u;
+  register unsigned int ar0_offset;
+  
+  ar0_offset = (INFERIOR_AR0 (u));
+  if (regno == -1)
+    {
+      for (regno = 0; (regno < FP0_REGNUM); regno++)
+	fetch_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
+      for (; (regno < NUM_REGS); regno++)
+	fetch_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
+    }
+  else
+    fetch_inferior_register (regno,
+			     (regno < FP0_REGNUM
+			      ? REGISTER_ADDR (ar0_offset, regno)
+			      : FP_REGISTER_ADDR (u, regno)));
+}
+
+/* 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)
+     register int regno;
+{
+  struct user u;
+  register unsigned int ar0_offset;
+  extern char registers[];
+
+  if (regno >= FP0_REGNUM)
+    {
+      store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
+      return;
+    }
+  
+  ar0_offset = (INFERIOR_AR0 (u));
+  if (regno >= 0)
+    {
+      store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
+      return;
+    }
+
+  for (regno = 0; (regno < FP0_REGNUM); regno++)
+    store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
+  for (; (regno < NUM_REGS); regno++)
+    store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
+  return;
+}
+
+
+/* Take the register values out of a core file and store
+   them where `read_register' will find them.  */
+
+#ifdef HPUX_VERSION_5
+#define e_PS e_regs[PS]
+#define e_PC e_regs[PC]
+#endif /* HPUX_VERSION_5 */
+
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+     char *core_reg_sect;
+     int core_reg_size;
+     int which;
+     unsigned int reg_addr;	/* Unused in this version */
+{
+  int val, regno;
+  struct user u;
+  struct exception_stack *pes = (struct exception_stack *) core_reg_sect;
+#define es (*pes)
+  char *buf;
+
+  if (which == 0) {
+    if (core_reg_size < 
+		  ((char *) &es.e_offset - (char *) &es.e_regs[R0]))
+	  error ("Not enough registers in core file");
+    for (regno = 0; (regno < PS_REGNUM); regno++)
+      supply_register (regno, &es.e_regs[regno + R0]);
+    val = es.e_PS;
+    supply_register (regno++, &val);
+    supply_register (regno++, &es.e_PC);
+
+  } else if (which == 2) {
+
+    /* FIXME: This may not work if the float regs and control regs are
+       discontinuous.  */
+    for (regno = FP0_REGNUM, buf = core_reg_sect;
+	 (regno < NUM_REGS);
+	 buf += REGISTER_RAW_SIZE (regno), regno++)
+      {
+	supply_register (regno, buf);
+      }
+  }
+}