* config/mips/mipsv4.mh, config/mips/mipsv4.mt,

	config/mips/tm-mipsv4.h, config/mips/xm-mipsv4.h, mipsv4-nat.c:
	New files for MIPS SVR4 support.

5 files changed, 76 insertions, 0 deletions

diff --git a/gdb/config/mips/.Sanitize b/gdb/config/mips/.Sanitize
index 4b2a190..91083e5 100644
--- a/gdb/config/mips/.Sanitize
+++ b/gdb/config/mips/.Sanitize
@@ -39,6 +39,8 @@ littlemips.mt
 mipsel64.mt
 mipsm3.mh
 mipsm3.mt
+mipsv4.mh
+mipsv4.mt
 news-mips.mh
 nm-irix3.h
 nm-irix4.h
@@ -58,12 +60,14 @@ tm-irix5.h
 tm-mips.h
 tm-mips64.h
 tm-mipsm3.h
+tm-mipsv4.h
 xm-irix3.h
 xm-irix4.h
 xm-irix5.h
 xm-makeva.h
 xm-mips.h
 xm-mipsm3.h
+xm-mipsv4.h
 xm-news-mips.h
 xm-riscos.h
 
diff --git a/gdb/config/mips/mipsv4.mh b/gdb/config/mips/mipsv4.mh
new file mode 100644
index 0000000..ec6c64d
--- /dev/null
+++ b/gdb/config/mips/mipsv4.mh
@@ -0,0 +1,5 @@
+# Host: Mips running SVR4
+XM_FILE= xm-mipsv4.h
+NAT_FILE= nm-sysv4.h
+NATDEPFILES= fork-child.o procfs.o mipsv4-nat.o corelow.o core-svr4.o solib.o
+INSTALL = cp
diff --git a/gdb/config/mips/mipsv4.mt b/gdb/config/mips/mipsv4.mt
new file mode 100644
index 0000000..b250052
--- /dev/null
+++ b/gdb/config/mips/mipsv4.mt
@@ -0,0 +1,3 @@
+# Target: MIPS running SVR4
+TDEPFILES= mips-pinsn.o mips-tdep.o exec.o
+TM_FILE= tm-mipsv4.h
diff --git a/gdb/config/mips/tm-mipsv4.h b/gdb/config/mips/tm-mipsv4.h
new file mode 100644
index 0000000..5fc4e4c
--- /dev/null
+++ b/gdb/config/mips/tm-mipsv4.h
@@ -0,0 +1,41 @@
+/* Target machine description for MIPS running SVR4, for GDB.
+   Copyright 1994 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-bigmips.h"
+#include "tm-sysv4.h"
+
+/* When calling functions on a 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
+
+/* The signal handler trampoline is called _sigtramp.  */
+#undef IN_SIGTRAMP
+#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigtramp", name))
+ 
+/* On entry to the signal handler trampoline, an ucontext is already
+   pushed on the stack. We can get at the saved registers via the
+   mcontext which is contained within the ucontext.  */
+#define SIGFRAME_BASE	0
+#define SIGFRAME_REGSAVE_OFF	(SIGFRAME_BASE + 40)
+#define SIGFRAME_PC_OFF		(SIGFRAME_BASE + 40 + 35 * 4)
+
+/* Use the alternate method of determining valid frame chains. */
+#define FRAME_CHAIN_VALID_ALTERNATE
diff --git a/gdb/config/mips/xm-mipsv4.h b/gdb/config/mips/xm-mipsv4.h
new file mode 100644
index 0000000..ce594b2
--- /dev/null
+++ b/gdb/config/mips/xm-mipsv4.h
@@ -0,0 +1,23 @@
+/* Definitions for MIPS running SVR4 hosting support.
+
+Copyright (C) 1994 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