Mips native support. Decstation and iris4 have been tested.

Iris3 has not.

* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
  fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
  files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.  Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
  fork-child.o mips-xdep.o coredep.o.
  (NAT_FILE, NATDEPFILES): new macros for native support.

1 files changed, 165 insertions, 0 deletions

diff --git a/gdb/mips-nat.c b/gdb/mips-nat.c
new file mode 100644
index 0000000..458f91f
--- /dev/null
+++ b/gdb/mips-nat.c
@@ -0,0 +1,165 @@
+/* Low level MIPS interface to ptrace, for GDB when running under Unix.
+   Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
+   Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
+   and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
+
+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"
+
+/* For now we stub this out; sgi core format is super-hairy (and completely
+   different in the new release).
+   For most mips systems, this function is defined in coredep.c.   */
+
+#if defined(sgi) 
+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;
+{
+  return;
+}
+#endif
+
+/* Access to the inferior is only good for native systems, not cross.
+   I am not sure why this is stubbed out on SGI...   --gnu@cygnus.com  */
+
+#if defined(sgi) || !defined(GDB_TARGET_IS_MIPS)
+
+/* ARGSUSED */
+void
+fetch_inferior_registers (regno)
+     int regno;
+{
+  return;
+}
+
+/* ARGSUSED */
+void
+store_inferior_registers (regno)
+     int regno;
+{
+  return;
+}
+
+
+#else
+
+/* DECstation native... */
+
+#include <sys/ptrace.h>
+
+/* Map gdb internal register number to ptrace ``address''.
+   These ``addresses'' are defined in DECstation <sys/ptrace.h> */
+
+#define REGISTER_PTRACE_ADDR(regno) \
+   (regno < 32 ? 		GPR_BASE + regno \
+  : regno == PC_REGNUM ?	PC	\
+  : regno == CAUSE_REGNUM ?	CAUSE	\
+  : regno == HI_REGNUM ?	MMHI	\
+  : regno == LO_REGNUM ?	MMLO	\
+  : regno == FCRCS_REGNUM ?	FPC_CSR	\
+  : regno == FCRIR_REGNUM ?	FPC_EIR	\
+  : regno >= FP0_REGNUM ?	FPR_BASE + (regno - FP0_REGNUM) \
+  : 0)
+
+static const char zerobuf[MAX_REGISTER_RAW_SIZE];
+
+/* Get all registers from the inferior */
+
+void
+fetch_inferior_registers (regno)
+     int regno;
+{
+  register unsigned int regaddr;
+  char buf[MAX_REGISTER_RAW_SIZE];
+  register int i;
+
+  registers_fetched ();
+
+  for (regno = 1; regno < NUM_REGS; regno++)
+    {
+      regaddr = REGISTER_PTRACE_ADDR (regno);
+      for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+ 	{
+ 	  *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid,
+				     (PTRACE_ARG3_TYPE) regaddr, 0);
+ 	  regaddr += sizeof (int);
+ 	}
+      supply_register (regno, buf);
+    }
+
+  supply_register (ZERO_REGNUM, zerobuf);
+  /* Frame ptr reg must appear to be 0; it is faked by stack handling code. */
+  supply_register (FP_REGNUM, zerobuf);
+}
+
+/* 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;
+{
+  register unsigned int regaddr;
+  char buf[80];
+
+  if (regno == 0)
+    return;
+
+  if (regno > 0)
+    {
+      regaddr = REGISTER_PTRACE_ADDR (regno);
+      errno = 0;
+      ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+	      read_register (regno));
+      if (errno != 0)
+	{
+	  sprintf (buf, "writing register number %d", regno);
+	  perror_with_name (buf);
+	}
+    }
+  else
+    {
+      for (regno = 0; regno < NUM_REGS; regno++)
+	{
+	  if (regno == ZERO_REGNUM || regno == PS_REGNUM
+	      || regno == BADVADDR_REGNUM || regno == CAUSE_REGNUM
+	      || regno == FCRIR_REGNUM || regno == FP_REGNUM
+	      || (regno >= FIRST_EMBED_REGNUM && regno <= LAST_EMBED_REGNUM))
+	    continue;
+	  regaddr = register_addr (regno, 1);
+	  errno = 0;
+	  ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+		  read_register (regno));
+	  if (errno != 0)
+	    {
+	      sprintf (buf, "writing all regs, number %d", regno);
+	      perror_with_name (buf);
+	    }
+	}
+    }
+}
+
+#endif /* sgi */
+
+