New files for Irix 5 support.

gdb/.Sanitize

@@ -146,6 +146,7 @@ infptrace.c
 infrun.c
 inftarg.c
 irix4-nat.c
+irix5-nat.c
 isi-xdep.c
 kdb-start.c
 language.c
@@ -165,6 +166,7 @@ m88k-pinsn.c
 m88k-tdep.c
 main.c
 maint.c
+mdebugread.c
 mem-break.c
 minimon.h
 minsyms.c

gdb/config/mips/.Sanitize

@@ -29,6 +29,8 @@ idtl.mt
 irix3.mh
 irix3.mt
 irix4.mh
+irix5.mh
+irix5.mt
 littlemips.mh
 littlemips.mt
 mipsm3.mh
@@ -36,16 +38,19 @@ mipsm3.mt
 news-mips.mh
 nm-irix3.h
 nm-irix4.h
+nm-irix5.h
 nm-mips.h
 nm-news-mips.h
 nm-riscos.h
 riscos.mh
 tm-bigmips.h
 tm-irix3.h
+tm-irix5.h
 tm-mips.h
 tm-mipsm3.h
 xm-irix3.h
 xm-irix4.h
+xm-irix5.h
 xm-makeva.h
 xm-mips.h
 xm-mipsm3.h

gdb/config/mips/irix5.mh

@@ -0,0 +1,8 @@
+# Host: SGI Iris running irix 5.x
+XDEPFILES= ser-tcp.o
+XM_FILE= xm-irix5.h
+NAT_FILE= nm-irix5.h
+NATDEPFILES= fork-child.o procfs.o irix5-nat.o corelow.o
+MUNCH_DEFINE=-B
+XM_CLIBS=-lbsd -lsun
+INSTALL = cp

gdb/config/mips/irix5.mt

@@ -0,0 +1,3 @@
+# Target: SGI mips running Irix 5
+TDEPFILES= mips-pinsn.o mips-tdep.o exec.o
+TM_FILE= tm-irix5.h

gdb/config/mips/tm-irix5.h

@@ -0,0 +1,42 @@
+/* Target machine description for SGI Iris under Irix 5, for GDB.
+   Copyright 1990, 1991, 1992, 1993 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 "mips/tm-irix3.h"
+
+/* A function call in Irix 5 will sometimes skip the three initial
+   instructions which set the GP.  */
+#define AT_FUNCTION_START(pc,func_name,func_addr) ((pc) == (func_addr) + 12)
+
+/* When calling functions on Irix 5 (or any MIPS SVR4 ABI compliant
+   platform) $25 must hold the function address.  Dest_Reg is a macro
+   used in CALL_DUMMY in tm-mips.h.  */
+#undef Dest_Reg
+#define Dest_Reg 25
+
+/* Irix 5 saves a full 64 bits for each register.  We skip 2 * 4 to
+   get to the saved PC (the register mask and status register are both
+   32 bits) and then another 4 to get to the lower 32 bits.  We skip
+   the same 4 bytes, plus the 8 bytes for the PC to get to the
+   registers, and add another 4 to get to the lower 32 bits.  We skip
+   8 bytes per register.  */
+#undef SIGFRAME_PC_OFF
+#define SIGFRAME_PC_OFF		(SIGFRAME_BASE + 2 * 4 + 4)
+#undef SIGFRAME_REGSAVE_OFF
+#define SIGFRAME_REGSAVE_OFF	(SIGFRAME_BASE + 2 * 4 + 8 + 4)
+#define SIGFRAME_REG_SIZE	8

gdb/config/mips/xm-irix5.h

@@ -0,0 +1,34 @@
+/* Definitions for irix5 hosting support.
+
+Copyright (C) 1993 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 "xm-sysv4.h"
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* Override register locations in upage for SGI machines */
+#undef REGISTER_U_ADDR
+#define REGISTER_U_ADDR(addr, blockend, regno) 		\
+  if (regno < PC_REGNUM)				\
+      addr = regno;					\
+  else							\
+      addr = regno + NSIG_HNDLRS; /* Skip over signal handlers */
+
+/* Mips hosts need aligned va_list arguments.  */
+#include "mips/xm-makeva.h"