* config/{*.mt, *.mh}: All target and host makefile fragment

	config files moved to an appropriate config/<cpu> subdirectory.
	* nm-*, xm-*, tm-*:  All native, host, and target files, which
	get linked to nm.h, xm.h, and tm.h respectively by configure,
	moved to appropriate config/<cpu> subdirectory.

70 files changed, 3081 insertions, 0 deletions

diff --git a/gdb/config/m68k/3b1.mh b/gdb/config/m68k/3b1.mh
new file mode 100644
index 0000000000..fd484f7ce1
--- /dev/null
+++ b/gdb/config/m68k/3b1.mh
@@ -0,0 +1,12 @@
+# Host: AT&T 3b1/Unix pc
+# I don't think cc has been tried.  -traditional for <sys/ioctl.h>
+# (not sure whether necessary).
+CC= gcc -traditional
+# GCC runs out of virtual memory.
+# A separate CC for pinsn routines is no longer supported, though.
+# FIXME -- someone unlucky enough to have a 3B1, let bug-gcc@prep.ai.mit.edu
+# know what works and what fails on the 3B1.
+#PINSN_CC= cc
+
+XDEPFILES= infptrace.o inftarg.o fork-child.o coredep.o corelow.o
+XM_FILE= xm-3b1.h
diff --git a/gdb/config/m68k/3b1.mt b/gdb/config/m68k/3b1.mt
new file mode 100644
index 0000000000..bba2ed1e66
--- /dev/null
+++ b/gdb/config/m68k/3b1.mt
@@ -0,0 +1,3 @@
+# Target: AT&T 3b1/Unix pc
+TDEPFILES= exec.o m68k-pinsn.o
+TM_FILE= tm-3b1.h
diff --git a/gdb/config/m68k/altos.mh b/gdb/config/m68k/altos.mh
new file mode 100644
index 0000000000..13c37a7010
--- /dev/null
+++ b/gdb/config/m68k/altos.mh
@@ -0,0 +1,6 @@
+# Host: Altos 3068 (68k, System V release 2)
+XDEPFILES= infptrace.o inftarg.o fork-child.o altos-xdep.o
+XM_FILE= xm-altos.h
+REGEX=regex.o
+REGEX1=regex.o
+SYSV_DEFINE=-DSYSV
diff --git a/gdb/config/m68k/altos.mt b/gdb/config/m68k/altos.mt
new file mode 100644
index 0000000000..d156615f65
--- /dev/null
+++ b/gdb/config/m68k/altos.mt
@@ -0,0 +1,3 @@
+# Target: Altos 3068 (68k, System V release 2)
+TDEPFILES= m68k-pinsn.o exec.o
+TM_FILE= tm-altos.h
diff --git a/gdb/config/m68k/amix.mh b/gdb/config/m68k/amix.mh
new file mode 100644
index 0000000000..ad3afed038
--- /dev/null
+++ b/gdb/config/m68k/amix.mh
@@ -0,0 +1,26 @@
+# Host: Commodore Amiga running SVR4.
+NAT_FILE= nm-sysv4.h
+NATDEPFILES= corelow.o procfs.o fork-child.o
+XDEPFILES=
+XM_FILE= xm-amix.h
+SYSV_DEFINE=-DSYSV
+REGEX=regex.o
+REGEX1=regex.o
+
+# We need to find alloca() somewhere.  Gcc has one built in, but most other
+# compilers don't.  Using the one in /usr/ucblib/libucb.a is tricky because
+# we have to be careful not to pull in anything else from the library (lots
+# of things are broken in most SVR4 versions).  The best solution is to just
+# compile alloca.c and link it into the executable.  If we end up not needing
+# it, then the code is just dead.  Once alloca.c moves to libiberty, then we
+# can eliminate this semi-kludge.
+ALLOCA=alloca.o
+ALLOCA1=alloca.o
+
+# SVR4 comes standard with terminfo, and in some implementations, the
+# old termcap descriptions are incomplete.  So ensure that we use the
+# new terminfo interface and latest terminal descriptions.
+TERMCAP=-ltermlib
+
+# SVR4 puts the BSD compatible install in /usr/ucb.
+INSTALL = /usr/ucb/install -c
diff --git a/gdb/config/m68k/amix.mt b/gdb/config/m68k/amix.mt
new file mode 100644
index 0000000000..91166b92e5
--- /dev/null
+++ b/gdb/config/m68k/amix.mt
@@ -0,0 +1,3 @@
+# Target: Commodore Amiga running SVR4
+TDEPFILES= m68k-pinsn.o exec.o m68k-tdep.o solib.o
+TM_FILE= tm-amix.h
diff --git a/gdb/config/m68k/apollo68b.mh b/gdb/config/m68k/apollo68b.mh
new file mode 100644
index 0000000000..58f731360f
--- /dev/null
+++ b/gdb/config/m68k/apollo68b.mh
@@ -0,0 +1,6 @@
+# Host: Apollo 68k, BSD mode.
+
+XM_FILE= xm-apollo68b.h
+XDEPFILES= ser-bsd.o
+NAT_FILE= nm-apollo68b.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o a68v-nat.o
diff --git a/gdb/config/m68k/apollo68v.mh b/gdb/config/m68k/apollo68v.mh
new file mode 100644
index 0000000000..f710724515
--- /dev/null
+++ b/gdb/config/m68k/apollo68v.mh
@@ -0,0 +1,10 @@
+RANLIB=echo >/dev/null
+XM_FILE= xm-apollo68v.h
+XM_CLIBS= -lPW
+SYSV_DEFINE=-DSYSV
+REGEX=regex.o
+REGEX1=regex.o
+CC= cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DNO_SYS_FILE
+XDEPFILES= 
+NAT_FILE= nm-apollo68v.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o a68v-nat.o
diff --git a/gdb/config/m68k/es1800.mt b/gdb/config/m68k/es1800.mt
new file mode 100644
index 0000000000..fd421637dc
--- /dev/null
+++ b/gdb/config/m68k/es1800.mt
@@ -0,0 +1,3 @@
+# Target:  Ericcson ES-1800 emulator (remote) for m68k.
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o remote-es1800.o 
+TM_FILE= tm-es1800.h
diff --git a/gdb/config/m68k/hp300bsd.mh b/gdb/config/m68k/hp300bsd.mh
new file mode 100644
index 0000000000..fd2fa4b6f8
--- /dev/null
+++ b/gdb/config/m68k/hp300bsd.mh
@@ -0,0 +1,7 @@
+# Host: Hewlett-Packard 9000 series 300, running BSD
+XDEPFILES= 
+XM_FILE= xm-hp300bsd.h
+NAT_FILE= nm-hp300bsd.h
+NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o coredep.o corelow.o
+REGEX=regex.o
+REGEX1=regex.o
diff --git a/gdb/config/m68k/hp300bsd.mt b/gdb/config/m68k/hp300bsd.mt
new file mode 100644
index 0000000000..7690f09acb
--- /dev/null
+++ b/gdb/config/m68k/hp300bsd.mt
@@ -0,0 +1,3 @@
+# Target: Hewlett-Packard 9000 series 300, running BSD
+TDEPFILES= m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-hp300bsd.h
diff --git a/gdb/config/m68k/hp300hpux.mh b/gdb/config/m68k/hp300hpux.mh
new file mode 100644
index 0000000000..43e27a3c50
--- /dev/null
+++ b/gdb/config/m68k/hp300hpux.mh
@@ -0,0 +1,15 @@
+# Host: Hewlett-Packard 9000 series 300, running HPUX
+# The following is true because gcc uses a different .o file format
+# than the native HPUX compiler
+#msg If you compile GDB with GCC on HPUX, you must make sure
+#msg that the `nm' used in `munch' is GNU nm
+#msg
+
+XM_FILE= xm-hp300hpux.h
+NAT_FILE= nm-hp300hpux.h
+NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o hp300ux-nat.o
+SYSV_DEFINE=-DSYSV
+REGEX=regex.o
+REGEX1=regex.o
+ALLOCA=alloca.o
+ALLOCA1=alloca.o
diff --git a/gdb/config/m68k/hp300hpux.mt b/gdb/config/m68k/hp300hpux.mt
new file mode 100644
index 0000000000..a8902cdf22
--- /dev/null
+++ b/gdb/config/m68k/hp300hpux.mt
@@ -0,0 +1,11 @@
+# Target: Hewlett-Packard 9000 series 300, running HPUX
+
+#msg Note that GDB can only read symbols from programs that were
+#msg compiled with GCC
+#msg
+
+# The headers in the directory hp-include override system headers
+# and tell GDB to use BSD executable file format (hence -Ihp-include)
+MT_CFLAGS=-Ihp-include
+TDEPFILES= m68k-pinsn.o
+TM_FILE= tm-hp300hpux.h
diff --git a/gdb/config/m68k/isi.mh b/gdb/config/m68k/isi.mh
new file mode 100644
index 0000000000..b0a5bedc5d
--- /dev/null
+++ b/gdb/config/m68k/isi.mh
@@ -0,0 +1,3 @@
+# Host: ISI Optimum V (3.05) under 4.3bsd.
+XDEPFILES= infptrace.o inftarg.o fork-child.o coredep.o corelow.o
+XM_FILE= xm-isi.h
diff --git a/gdb/config/m68k/isi.mt b/gdb/config/m68k/isi.mt
new file mode 100644
index 0000000000..fb4d83f9d0
--- /dev/null
+++ b/gdb/config/m68k/isi.mt
@@ -0,0 +1,3 @@
+# Target: ISI Optimum V (3.05) under 4.3bsd.
+TDEPFILES= exec.o m68k-pinsn.o
+TM_FILE= tm-isi.h
diff --git a/gdb/config/m68k/m68k-fp.mt b/gdb/config/m68k/m68k-fp.mt
new file mode 100644
index 0000000000..139595b723
--- /dev/null
+++ b/gdb/config/m68k/m68k-fp.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 68xxx with floating point
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-68k-fp.h
diff --git a/gdb/config/m68k/m68k-nofp.mt b/gdb/config/m68k/m68k-nofp.mt
new file mode 100644
index 0000000000..a2465bf6aa
--- /dev/null
+++ b/gdb/config/m68k/m68k-nofp.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 68xxx without floating point
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-68k-nofp.h
diff --git a/gdb/config/m68k/news.mh b/gdb/config/m68k/news.mh
new file mode 100644
index 0000000000..64f8de8518
--- /dev/null
+++ b/gdb/config/m68k/news.mh
@@ -0,0 +1,5 @@
+# Host: Sony news series 700/800/900 (68020) running NewsOS version 3.
+XDEPFILES= news-xdep.o
+XM_FILE= xm-news.h
+NAT_FILE= nm-news.h
+NATDEPFILES= exec.o inftarg.o fork-child.o coredep.o corelow.o infptrace.o 
diff --git a/gdb/config/m68k/news.mt b/gdb/config/m68k/news.mt
new file mode 100644
index 0000000000..5c595ea6b4
--- /dev/null
+++ b/gdb/config/m68k/news.mt
@@ -0,0 +1,3 @@
+# Target: Sony news series 700/800/900 (68020) running NewsOS version 3.
+TDEPFILES= m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-news.h
diff --git a/gdb/config/m68k/news1000.mh b/gdb/config/m68k/news1000.mh
new file mode 100644
index 0000000000..0a03a899e0
--- /dev/null
+++ b/gdb/config/m68k/news1000.mh
@@ -0,0 +1,3 @@
+# Host: Sony news series 1000 (68030) running NewsOS version 3.
+XDEPFILES= infptrace.o inftarg.o fork-child.o coredep.o corelow.o news-xdep.o
+XM_FILE= xm-news1000.h
diff --git a/gdb/config/m68k/nm-apollo68b.h b/gdb/config/m68k/nm-apollo68b.h
new file mode 100644
index 0000000000..ba2998aefb
--- /dev/null
+++ b/gdb/config/m68k/nm-apollo68b.h
@@ -0,0 +1,23 @@
+/* Macro defintions for an Apollo 68k in BSD mode
+   Copyright (C) 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define PTRACE_IN_WRONG_PLACE
+
+#define	FETCH_INFERIOR_REGISTERS
+
diff --git a/gdb/config/m68k/nm-apollo68v.h b/gdb/config/m68k/nm-apollo68v.h
new file mode 100644
index 0000000000..6c83f3879b
--- /dev/null
+++ b/gdb/config/m68k/nm-apollo68v.h
@@ -0,0 +1,20 @@
+/* Macro defintions for an Apollo.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define	FETCH_INFERIOR_REGISTERS
diff --git a/gdb/config/m68k/nm-hp300bsd.h b/gdb/config/m68k/nm-hp300bsd.h
new file mode 100644
index 0000000000..353184232c
--- /dev/null
+++ b/gdb/config/m68k/nm-hp300bsd.h
@@ -0,0 +1,97 @@
+/* Parameters for Hewlett-Packard 9000/300 native support under bsd.
+   Copyright 1986, 1987, 1989, 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.  */
+
+/* This is a hack.  This is only a hack.  Were this a common source file,
+   rather than a config file specific to BSD on HP 68k's, you would have
+   been instructed to clean this up.  As it is, clean it up if FSF's 
+   HP's-running-ancient-BSD ever go away.  */
+
+#include <errno.h>
+#ifdef	EPROCUNAVAIL
+  /* BSD 4.4 alpha or better */
+
+  /* We can attach to processes using ptrace.  */
+
+#define	ATTACH_DETACH
+#define	PTRACE_ATTACH	10
+#define	PTRACE_DETACH	11
+
+  /* The third argument of ptrace is declared as this type.  */
+
+#define	PTRACE_ARG3_TYPE	caddr_t
+
+/* U_REGS_OFFSET is the offset of the registers within the u area for
+   ptrace purposes.  */
+#define U_REGS_OFFSET \
+  ptrace (PT_READ_U, inferior_pid, \
+	  (PTRACE_ARG3_TYPE) \
+	   (offsetof (struct user, u_kproc.kp_proc.p_md.md_regs)), 0) \
+    - USRSTACK
+
+  /* This is a piece of magic that is given a register number REGNO
+     and as BLOCKEND the address in the system of the end of the user structure
+     and stores in ADDR the address in the kernel or core dump
+     of that register.  */
+
+#define REGISTER_U_ADDR(addr, blockend, regno)				\
+{									\
+  if (regno < PS_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_regs[regno];		\
+  else if (regno == PS_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_stackadj;		\
+  else if (regno == PC_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_pc;			\
+  else if (regno < FPC_REGNUM)						\
+    addr = (int)							\
+      &((struct user *)0)->u_pcb.pcb_fpregs.fpf_regs[((regno)-FP0_REGNUM)*3];\
+  else if (regno == FPC_REGNUM)						\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpcr;	\
+  else if (regno == FPS_REGNUM)						\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpsr;	\
+  else									\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpiar;	\
+}
+#else
+
+/* THIS IS BSD 4.3 or something like it.  */
+
+/* This is a piece of magic that is given a register number REGNO
+   and as BLOCKEND the address in the system of the end of the user structure
+   and stores in ADDR the address in the kernel or core dump
+   of that register.  */
+
+#define REGISTER_U_ADDR(addr, blockend, regno)				\
+{									\
+  if (regno < PS_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_regs[regno];		\
+  else if (regno == PS_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_stackadj;		\
+  else if (regno == PC_REGNUM)						\
+    addr = (int) &((struct frame *)(blockend))->f_pc;			\
+  else if (regno < FPC_REGNUM)						\
+    addr = (int)							\
+      &((struct user *)0)->u_pcb.pcb_fpregs.fpf_regs[((regno)-FP0_REGNUM)*3];\
+  else if (regno == FPC_REGNUM)						\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpcr;	\
+  else if (regno == FPS_REGNUM)						\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpsr;	\
+  else									\
+    addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpiar;	\
+}
+#endif
diff --git a/gdb/config/m68k/nm-hp300hpux.h b/gdb/config/m68k/nm-hp300hpux.h
new file mode 100644
index 0000000000..060f79242c
--- /dev/null
+++ b/gdb/config/m68k/nm-hp300hpux.h
@@ -0,0 +1,26 @@
+/* Parameters for native support on HP 9000 model 320, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Do implement the attach and detach commands.  */
+
+#define ATTACH_DETACH
+
+/* fetch_inferior_registers is in nat-hp300hpux.c.  */
+#define FETCH_INFERIOR_REGISTERS
+
diff --git a/gdb/config/m68k/nm-news.h b/gdb/config/m68k/nm-news.h
new file mode 100644
index 0000000000..881b7349fa
--- /dev/null
+++ b/gdb/config/m68k/nm-news.h
@@ -0,0 +1,20 @@
+/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
+   Copyright 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* This file intentionally empty. */
diff --git a/gdb/config/m68k/nm-sun2.h b/gdb/config/m68k/nm-sun2.h
new file mode 100644
index 0000000000..65ecaed835
--- /dev/null
+++ b/gdb/config/m68k/nm-sun2.h
@@ -0,0 +1,33 @@
+/* Parameters for execution on a Sun2, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Do implement the attach and detach commands.  */
+
+#define ATTACH_DETACH
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
+#define FETCH_INFERIOR_REGISTERS
+
+/* This is a piece of magic that is given a register number REGNO
+   and as BLOCKEND the address in the system of the end of the user structure
+   and stores in ADDR the address in the kernel or core dump
+   of that register.  */
+
+#define REGISTER_U_ADDR(addr, blockend, regno)		\
+{ addr = blockend + regno * 4; }
diff --git a/gdb/config/m68k/nm-sun3.h b/gdb/config/m68k/nm-sun3.h
new file mode 100644
index 0000000000..31972bba29
--- /dev/null
+++ b/gdb/config/m68k/nm-sun3.h
@@ -0,0 +1,26 @@
+/* Host-dependent definitions 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Do implement the attach and detach commands.  */
+
+#define ATTACH_DETACH
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
+
+#define FETCH_INFERIOR_REGISTERS
diff --git a/gdb/config/m68k/os68k.mt b/gdb/config/m68k/os68k.mt
new file mode 100644
index 0000000000..a921691381
--- /dev/null
+++ b/gdb/config/m68k/os68k.mt
@@ -0,0 +1,3 @@
+# Target: VxWorks running on a 68000
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-os68k.h
diff --git a/gdb/config/m68k/st2000.mt b/gdb/config/m68k/st2000.mt
new file mode 100644
index 0000000000..d3c21f3d28
--- /dev/null
+++ b/gdb/config/m68k/st2000.mt
@@ -0,0 +1,7 @@
+# Target: Tandem ST-2000 phone switch
+# These defines should give you a gdb running on anything that will be able to
+# communicate with a Tandem ST2000 phone switch debug monitor.  Communications
+# is facilitated via either a serial line, or a TCP or TELNET connection to
+# a serial line on a terminal multiplexor.
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o remote-st2000.o
+TM_FILE= tm-st2000.h
diff --git a/gdb/config/m68k/sun2os3.mh b/gdb/config/m68k/sun2os3.mh
new file mode 100644
index 0000000000..a3ef6278eb
--- /dev/null
+++ b/gdb/config/m68k/sun2os3.mh
@@ -0,0 +1,5 @@
+# Host: Sun 2, running SunOS 3
+XDEPFILES= 
+XM_FILE= xm-sun2.h
+NAT_FILE= nm-sun2.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o sun3-nat.o
diff --git a/gdb/config/m68k/sun2os3.mt b/gdb/config/m68k/sun2os3.mt
new file mode 100644
index 0000000000..bee830dd96
--- /dev/null
+++ b/gdb/config/m68k/sun2os3.mt
@@ -0,0 +1,8 @@
+# Target: Sun 2, running SunOS 3
+# The system-supplied assembler re-orders the symbols so that gdb
+# can't find "gcc_compiled.".
+#msg If you compile your program with GCC, use the GNU assembler.
+#msg
+
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-sun2.h
diff --git a/gdb/config/m68k/sun2os4.mh b/gdb/config/m68k/sun2os4.mh
new file mode 100644
index 0000000000..617642d93c
--- /dev/null
+++ b/gdb/config/m68k/sun2os4.mh
@@ -0,0 +1,5 @@
+# Host: Sun 2, running SunOS 4
+XDEPFILES= 
+XM_FILE= xm-sun2.h
+NAT_FILE= nm-sun2.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o sun3-nat.o
diff --git a/gdb/config/m68k/sun2os4.mt b/gdb/config/m68k/sun2os4.mt
new file mode 100644
index 0000000000..4443c5bcc2
--- /dev/null
+++ b/gdb/config/m68k/sun2os4.mt
@@ -0,0 +1,3 @@
+# Target: Sun 2, running SunOS 4
+TDEPFILES= exec.o m68k-pinsn.o solib.o m68k-tdep.o
+TM_FILE= tm-sun2os4.h
diff --git a/gdb/config/m68k/sun3os3.mh b/gdb/config/m68k/sun3os3.mh
new file mode 100644
index 0000000000..1b937932a8
--- /dev/null
+++ b/gdb/config/m68k/sun3os3.mh
@@ -0,0 +1,5 @@
+# Host: Sun 3, running SunOS 3
+XDEPFILES= 
+XM_FILE= xm-sun3.h
+NAT_FILE= nm-sun3.h
+NATDEPFILES= fork-child.o inftarg.o infptrace.o corelow.o sun3-nat.o
diff --git a/gdb/config/m68k/sun3os3.mt b/gdb/config/m68k/sun3os3.mt
new file mode 100644
index 0000000000..fa3c66268f
--- /dev/null
+++ b/gdb/config/m68k/sun3os3.mt
@@ -0,0 +1,8 @@
+# Target: Sun 3, running SunOS 3
+# The system-supplied assembler re-orders the symbols so that gdb
+# can't find "gcc_compiled.".
+#msg If you compile your program with GCC, use the GNU assembler.
+#msg
+
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o
+TM_FILE= tm-sun3.h
diff --git a/gdb/config/m68k/sun3os4.mh b/gdb/config/m68k/sun3os4.mh
new file mode 100644
index 0000000000..460f302442
--- /dev/null
+++ b/gdb/config/m68k/sun3os4.mh
@@ -0,0 +1,5 @@
+# Host: Sun 3, running SunOS 4
+XDEPFILES= 
+XM_FILE= xm-sun3os4.h
+NAT_FILE= nm-sun3.h
+NATDEPFILES= fork-child.o inftarg.o infptrace.o corelow.o sun3-nat.o
diff --git a/gdb/config/m68k/sun3os4.mt b/gdb/config/m68k/sun3os4.mt
new file mode 100644
index 0000000000..c249002376
--- /dev/null
+++ b/gdb/config/m68k/sun3os4.mt
@@ -0,0 +1,3 @@
+# Target: Sun 3, running SunOS 4, as a target system
+TDEPFILES= exec.o m68k-pinsn.o solib.o m68k-tdep.o
+TM_FILE= tm-sun3os4.h
diff --git a/gdb/config/m68k/tm-3b1.h b/gdb/config/m68k/tm-3b1.h
new file mode 100644
index 0000000000..b9bd4efcd2
--- /dev/null
+++ b/gdb/config/m68k/tm-3b1.h
@@ -0,0 +1,29 @@
+/* Parameters for targeting GDB to a 3b1.
+   Copyright 1986, 1987, 1989, 1991, 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.  */
+
+/* Define BPT_VECTOR if it is different than the default.
+   This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0x1
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0x300000
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-68k-fp.h b/gdb/config/m68k/tm-68k-fp.h
new file mode 100644
index 0000000000..73e228cba4
--- /dev/null
+++ b/gdb/config/m68k/tm-68k-fp.h
@@ -0,0 +1,66 @@
+/* Target machine parameters for embedded m68k with 6888x float, for GDB.
+   Copyright 1986, 1987, 1989, 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.  */
+
+#define HAVE_68881
+
+#include "m68k/tm-68k.h"
+
+/* Longjmp info comes from the Sun-3 machine description.  Might as well
+   guess... */
+
+/* Offsets (in target ints) into jmp_buf.  Not defined by Sun, but at least
+   documented in a comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_PSL 4
+#define JB_D2 5
+#define JB_D3 6
+#define JB_D4 7
+#define JB_D5 8
+#define JB_D6 9
+#define JB_D7 10
+#define JB_A2 11
+#define JB_A3 12
+#define JB_A4 13
+#define JB_A5 14
+#define JB_A6 15
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
+
+/* Where is the PC after a call?  */
+
+#ifdef __STDC__
+struct frame_info;
+#endif
+
+extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
+
+#undef SAVED_PC_AFTER_CALL
+#define SAVED_PC_AFTER_CALL(frame) \
+  m68k_saved_pc_after_call(frame)
diff --git a/gdb/config/m68k/tm-68k-nofp.h b/gdb/config/m68k/tm-68k-nofp.h
new file mode 100644
index 0000000000..0ce320c8ca
--- /dev/null
+++ b/gdb/config/m68k/tm-68k-nofp.h
@@ -0,0 +1,64 @@
+/* Target machine parameters for embedded m68k, without float, for GDB.
+   Copyright 1986, 1987, 1989, 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 "m68k/tm-68k.h"
+
+/* Longjmp info comes from the Sun-3 machine description.  Might as well
+   guess... */
+
+/* Offsets (in target ints) into jmp_buf.  Not defined by Sun, but at least
+   documented in a comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_PSL 4
+#define JB_D2 5
+#define JB_D3 6
+#define JB_D4 7
+#define JB_D5 8
+#define JB_D6 9
+#define JB_D7 10
+#define JB_A2 11
+#define JB_A3 12
+#define JB_A4 13
+#define JB_A5 14
+#define JB_A6 15
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
+
+/* Where is the PC after a call?  */
+
+#ifdef __STDC__
+struct frame_info;
+#endif
+
+extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
+
+#undef SAVED_PC_AFTER_CALL
+#define SAVED_PC_AFTER_CALL(frame) \
+  m68k_saved_pc_after_call(frame)
diff --git a/gdb/config/m68k/tm-68k.h b/gdb/config/m68k/tm-68k.h
new file mode 100644
index 0000000000..96d71dec71
--- /dev/null
+++ b/gdb/config/m68k/tm-68k.h
@@ -0,0 +1,525 @@
+/* Parameters for execution on a 68000 series machine.
+   Copyright 1986, 1987, 1989, 1990, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Generic 68000 stuff, to be included by other tm-*.h files.
+   Define HAVE_68881 if that is the case.  */
+
+#if defined (HAVE_68881)
+#define IEEE_FLOAT 1
+#endif
+
+/* Define the bit, byte, and word ordering of the machine.  */
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Offset from address of function to start of its code.
+   Zero on most machines.  */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Advance PC across any function entry prologue instructions
+   to reach some "real" code.  */
+
+#if !defined(SKIP_PROLOGUE)
+#define SKIP_PROLOGUE(ip)   {(ip) = m68k_skip_prologue(ip);}
+extern CORE_ADDR m68k_skip_prologue PARAMS ((CORE_ADDR ip));
+#endif
+
+/* Immediately after a function call, return the saved pc.
+   Can't always go through the frames for this because on some machines
+   the new frame is not set up until the new function executes
+   some instructions.  */
+
+#define SAVED_PC_AFTER_CALL(frame) \
+read_memory_integer (read_register (SP_REGNUM), 4)
+
+/* Stack grows downward.  */
+
+#define INNER_THAN <
+
+/* Sequence of bytes for breakpoint instruction.
+   This is a TRAP instruction.  The last 4 bits (0xf below) is the
+   vector.  Systems which don't use 0xf should define BPT_VECTOR
+   themselves before including this file.  */
+
+#if !defined (BPT_VECTOR)
+#define BPT_VECTOR 0xf
+#endif
+
+#if !defined (BREAKPOINT)
+#define BREAKPOINT {0x4e, (0x40 | BPT_VECTOR)}
+#endif
+
+/* If your kernel resets the pc after the trap happens you may need to
+   define this before including this file.  */
+
+#if !defined (DECR_PC_AFTER_BREAK)
+#define DECR_PC_AFTER_BREAK 2
+#endif
+
+/* Nonzero if instruction at PC is a return instruction.  */
+/* Allow any of the return instructions, including a trapv and a return
+   from interupt.  */
+
+#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 2) & ~0x3) == 0x4e74)
+
+/* Return 1 if P points to an invalid floating point value.  */
+
+#define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
+
+/* Say how long registers are.  */
+
+#define REGISTER_TYPE long
+
+#if defined (HAVE_68881)
+#  if defined (GDB_TARGET_IS_SUN3)
+    /* Sun3 status includes fpflags, which shows whether the FPU has been used
+       by the process, and whether the FPU was done with an instruction or 
+       was interrupted in the middle of a long instruction.  See
+       <machine/reg.h>.  */
+    /*                      a&d, pc,sr, fp, fpstat, fpflags   */
+#    define NUM_REGS 31
+#    define REGISTER_BYTES (16*4 + 8 + 8*12 + 3*4 + 4)
+#  else /* Not sun3.  */
+#    define NUM_REGS 29
+#    define REGISTER_BYTES (16*4 + 8 + 8*12 + 3*4)
+#  endif /* Not sun3.  */
+#else /* No 68881.  */
+#  define NUM_REGS 18
+#  define REGISTER_BYTES (16*4 + 8)
+#endif /* No 68881.  */
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+
+#if defined (HAVE_68881)
+#define REGISTER_BYTE(N)  \
+ ((N) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 168	\
+  : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 12) + 72	\
+  : (N) * 4)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  On the 68000, all regs are 4 bytes
+   except the floating point regs which are 12 bytes.  */
+/* Note that the unsigned cast here forces the result of the
+   subtraction to very high positive values if N < FP0_REGNUM */
+
+#define REGISTER_RAW_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 12 : 4)
+
+/* Number of bytes of storage in the program's representation
+   for register N.  On the 68000, all regs are 4 bytes
+   except the floating point regs which are 8-byte doubles.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 8 : 4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 12
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 8
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#define REGISTER_CONVERTIBLE(N) (((unsigned)(N) - FP0_REGNUM) < 8)
+
+/* Put the declaration out here because if it's in the macros, PCC
+   will complain.  */
+extern const struct ext_format ext_format_68881;
+
+/* Convert data from raw format for register REGNUM
+   to virtual format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO)	\
+{ \
+  if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM)	\
+    ieee_extended_to_double (&ext_format_68881, (FROM), (double *)(TO)); \
+  else					\
+    memcpy ((TO), (FROM), 4);	\
+}
+
+/* Convert data from virtual format for register REGNUM
+   to raw format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)	\
+{ \
+  if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM)	\
+    double_to_ieee_extended (&ext_format_68881, (double *)(FROM), (TO)); \
+  else					\
+    memcpy ((TO), (FROM), 4);	\
+}
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+/* Note, for registers which contain addresses return
+   pointer to void, not pointer to char, because we don't
+   want to attempt to print the string after printing the address.  */
+#define REGISTER_VIRTUAL_TYPE(N) \
+ (((unsigned)(N) - FP0_REGNUM) < 8 ? builtin_type_double :           \
+  (N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM ?         \
+  lookup_pointer_type (builtin_type_void) : builtin_type_int)
+
+#else /* no 68881.  */
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+
+#define REGISTER_BYTE(N)  ((N) * 4)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  On the 68000, all regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) 4
+
+/* Number of bytes of storage in the program's representation
+   for register N.  On the 68000, all regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) 4
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 4
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 4
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#define REGISTER_CONVERTIBLE(N) 0
+
+/* Convert data from raw format for register REGNUM
+   to virtual format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO)  memcpy ((TO), (FROM), 4);
+
+/* Convert data from virtual format for register REGNUM
+   to raw format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)  memcpy ((TO), (FROM), 4);
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N)  builtin_type_int
+
+#endif /* No 68881.  */
+
+/* Initializer for an array of names of registers.
+   Entries beyond the first NUM_REGS are ignored.  */
+
+#define REGISTER_NAMES  \
+ {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
+  "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
+  "ps", "pc",  \
+  "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", \
+  "fpcontrol", "fpstatus", "fpiaddr", "fpcode", "fpflags" }
+
+/* Register numbers of various important registers.
+   Note that some of these values are "real" register numbers,
+   and correspond to the general registers of the machine,
+   and some are "phony" register numbers which are too large
+   to be actual register numbers as far as the user is concerned
+   but do serve to get the desired values when passed to read_register.  */
+
+#define A1_REGNUM 9
+#define FP_REGNUM 14		/* Contains address of executing stack frame */
+#define SP_REGNUM 15		/* Contains address of top of stack */
+#define PS_REGNUM 16		/* Contains processor status */
+#define PC_REGNUM 17		/* Contains program counter */
+#if defined (HAVE_68881)
+#define FP0_REGNUM 18		/* Floating point register 0 */
+#define FPC_REGNUM 26		/* 68881 control register */
+#define FPS_REGNUM 27		/* 68881 status register */
+#define FPI_REGNUM 28		/* 68881 iaddr register */
+#endif /* 68881.  */
+
+/* Store the address of the place in which to copy the structure the
+   subroutine will return.  This is called from call_function. */
+
+#define STORE_STRUCT_RETURN(ADDR, SP) \
+  { write_register (A1_REGNUM, (ADDR)); }
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  This is assuming that floating point values are returned
+   as doubles in d0/d1.  */
+
+#if !defined (EXTRACT_RETURN_VALUE)
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  memcpy ((VALBUF),							\
+	  (char *)(REGBUF) +						\
+	         (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)),	\
+	  TYPE_LENGTH(TYPE))
+#endif
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  Assumes floats are passed
+   in d0/d1.  */
+
+#if !defined (STORE_RETURN_VALUE)
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
+#endif
+
+/* Extract from an array REGBUF containing the (raw) register state
+   the address in which a function should return its structure value,
+   as a CORE_ADDR (or an expression that can be used as one).  */
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF))
+
+/* Describe the pointer in each stack frame to the previous stack frame
+   (its caller).  */
+
+/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
+   chain-pointer.
+   In the case of the 68000, the frame's nominal address
+   is the address of a 4-byte word containing the calling frame's address.  */
+
+#define FRAME_CHAIN(thisframe)  \
+  (!inside_entry_file ((thisframe)->pc) ? \
+   read_memory_integer ((thisframe)->frame, 4) :\
+   0)
+
+/* Define other aspects of the stack frame.  */
+
+/* A macro that tells us whether the function invocation represented
+   by FI does not have a frame on the stack associated with it.  If it
+   does not, FRAMELESS is set to 1, else 0.  */
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+  (FRAMELESS) = frameless_look_for_prologue(FI)
+
+#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
+
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+
+/* Set VAL to the number of args passed to frame described by FI.
+   Can set VAL to -1, meaning no way to tell.  */
+
+/* We can't tell how many args there are
+   now that the C compiler delays popping them.  */
+#if !defined (FRAME_NUM_ARGS)
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+#endif
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 8
+
+/* Put here the code to store, into a struct frame_saved_regs,
+   the addresses of the saved registers of frame described by FRAME_INFO.
+   This includes special registers such as pc and fp saved in special
+   ways in the stack frame.  sp is even more special:
+   the address we return for it IS the sp for the next frame.  */
+
+#if !defined (FRAME_FIND_SAVED_REGS)
+#if defined (HAVE_68881)
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)		\
+{ register int regnum;							\
+  register int regmask;							\
+  register CORE_ADDR next_addr;						\
+  register CORE_ADDR pc;						\
+  int nextinsn;								\
+  bzero (&frame_saved_regs, sizeof frame_saved_regs);			\
+  if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
+      && (frame_info)->pc <= (frame_info)->frame)				\
+    { next_addr = (frame_info)->frame;					\
+      pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
+  else   								\
+    { pc = get_pc_function_start ((frame_info)->pc); 			\
+      /* Verify we have a link a6 instruction next;			\
+	 if not we lose.  If we win, find the address above the saved   \
+	 regs using the amount of storage from the link instruction.  */\
+      if (044016 == read_memory_integer (pc, 2))			\
+	next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 4), pc+=4; \
+      else if (047126 == read_memory_integer (pc, 2))			\
+	next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 2), pc+=2; \
+      else goto lose;							\
+      /* If have an addal #-n, sp next, adjust next_addr.  */		\
+      if ((0177777 & read_memory_integer (pc, 2)) == 0157774)		\
+	next_addr += read_memory_integer (pc += 2, 4), pc += 4;		\
+    }									\
+  /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */	\
+  regmask = read_memory_integer (pc + 2, 2);				\
+  /* But before that can come an fmovem.  Check for it.  */		\
+  nextinsn = 0xffff & read_memory_integer (pc, 2);			\
+  if (0xf227 == nextinsn						\
+      && (regmask & 0xff00) == 0xe000)					\
+    { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */ \
+      for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr -= 12);		\
+      regmask = read_memory_integer (pc + 2, 2); }			\
+  if (0044327 == read_memory_integer (pc, 2))				\
+    { pc += 4; /* Regmask's low bit is for register 0, the first written */ \
+      for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; }	\
+  else if (0044347 == read_memory_integer (pc, 2))			\
+    { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \
+      for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr -= 4); }		\
+  else if (0x2f00 == (0xfff0 & read_memory_integer (pc, 2)))		\
+    { regnum = 0xf & read_memory_integer (pc, 2); pc += 2;		\
+      (frame_saved_regs).regs[regnum] = (next_addr -= 4); }		\
+  /* fmovemx to index of sp may follow.  */				\
+  regmask = read_memory_integer (pc + 2, 2);				\
+  nextinsn = 0xffff & read_memory_integer (pc, 2);			\
+  if (0xf236 == nextinsn						\
+      && (regmask & 0xff00) == 0xf000)					\
+    { pc += 10; /* Regmask's low bit is for register fp0, the first written */ \
+      for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr += 12) - 12;	\
+      regmask = read_memory_integer (pc + 2, 2); }			\
+  /* clrw -(sp); movw ccr,-(sp) may follow.  */				\
+  if (0x426742e7 == read_memory_integer (pc, 4))			\
+    (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4);		\
+  lose: ;								\
+  (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8;		\
+  (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame;		\
+  (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4;		\
+}
+#else /* no 68881.  */
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)		\
+{ register int regnum;							\
+  register int regmask;							\
+  register CORE_ADDR next_addr;						\
+  register CORE_ADDR pc;						\
+  bzero (&frame_saved_regs, sizeof frame_saved_regs);			\
+  if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 4 \
+      && (frame_info)->pc <= (frame_info)->frame)				\
+    { next_addr = (frame_info)->frame;					\
+      pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 4; }\
+  else   								\
+    { pc = get_pc_function_start ((frame_info)->pc); 			\
+      /* Verify we have a link a6 instruction next;			\
+	 if not we lose.  If we win, find the address above the saved   \
+	 regs using the amount of storage from the link instruction.  */\
+      if (044016 == read_memory_integer (pc, 2))			\
+	next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 4), pc+=4; \
+      else if (047126 == read_memory_integer (pc, 2))			\
+	next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 2), pc+=2; \
+      else goto lose;							\
+      /* If have an addal #-n, sp next, adjust next_addr.  */		\
+      if ((0177777 & read_memory_integer (pc, 2)) == 0157774)		\
+	next_addr += read_memory_integer (pc += 2, 4), pc += 4;		\
+    }									\
+  /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */	\
+  regmask = read_memory_integer (pc + 2, 2);				\
+  if (0044327 == read_memory_integer (pc, 2))				\
+    { pc += 4; /* Regmask's low bit is for register 0, the first written */ \
+      for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; }	\
+  else if (0044347 == read_memory_integer (pc, 2))			\
+    { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \
+      for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr -= 4); }		\
+  else if (0x2f00 == (0xfff0 & read_memory_integer (pc, 2)))		\
+    { regnum = 0xf & read_memory_integer (pc, 2); pc += 2;		\
+      (frame_saved_regs).regs[regnum] = (next_addr -= 4); }		\
+  /* clrw -(sp); movw ccr,-(sp) may follow.  */				\
+  if (0x426742e7 == read_memory_integer (pc, 4))			\
+    (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4);		\
+  lose: ;								\
+  (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8;		\
+  (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame;		\
+  (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4;		\
+}
+#endif /* no 68881.  */
+#endif /* no FIND_FRAME_SAVED_REGS.  */
+
+
+/* Things needed for making the inferior call functions.
+   It seems like every m68k based machine has almost identical definitions
+   in the individual machine's configuration files.  Most other cpu types
+   (mips, i386, etc) have routines in their *-tdep.c files to handle this
+   for most configurations.  The m68k family should be able to do this as
+   well.  These macros can still be overridden when necessary.  */
+
+/* The CALL_DUMMY macro is the sequence of instructions, as disassembled
+   by gdb itself:
+
+	fmovemx fp0-fp7,sp@-			0xf227 0xe0ff
+	moveml d0-a5,sp@-			0x48e7 0xfffc
+	clrw sp@-				0x4267
+	movew ccr,sp@-				0x42e7
+
+	/..* The arguments are pushed at this point by GDB;
+	no code is needed in the dummy for this.
+	The CALL_DUMMY_START_OFFSET gives the position of 
+	the following jsr instruction.  *../
+
+	jsr @#0x32323232			0x4eb9 0x3232 0x3232
+	addal #0x69696969,sp			0xdffc 0x6969 0x6969
+	trap #<your BPT_VECTOR number here>	0x4e4?
+	nop					0x4e71
+
+   Note this is CALL_DUMMY_LENGTH bytes (28 for the above example).
+   We actually start executing at the jsr, since the pushing of the
+   registers is done by PUSH_DUMMY_FRAME.  If this were real code,
+   the arguments for the function called by the jsr would be pushed
+   between the moveml and the jsr, and we could allow it to execute through.
+   But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is
+   done, and we cannot allow the moveml to push the registers again lest
+   they be taken for the arguments.  */
+
+#if defined (HAVE_68881)
+
+#define CALL_DUMMY {0xf227e0ff, 0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, (0x4e404e71 | (BPT_VECTOR << 16))}
+#define CALL_DUMMY_LENGTH 28		/* Size of CALL_DUMMY */
+#define CALL_DUMMY_START_OFFSET 12	/* Offset to jsr instruction*/
+
+#else
+
+#define CALL_DUMMY {0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, (0x4e404e71 | (BPT_VECTOR << 16))}
+#define CALL_DUMMY_LENGTH 24		/* Size of CALL_DUMMY */
+#define CALL_DUMMY_START_OFFSET 8	/* Offset to jsr instruction*/
+
+#endif	/* HAVE_68881 */
+
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.
+   We use the BFD routines to store a big-endian value of known size.  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
+{ _do_putb32 (fun,     (char *) dummyname + CALL_DUMMY_START_OFFSET + 2);  \
+  _do_putb32 (nargs*4, (char *) dummyname + CALL_DUMMY_START_OFFSET + 8); }
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME	{ m68k_push_dummy_frame (); }
+
+extern void m68k_push_dummy_frame PARAMS ((void));
+
+extern void m68k_pop_frame PARAMS ((void));
+
+/* Discard from the stack the innermost frame, restoring all registers.  */
+
+#define POP_FRAME		{ m68k_pop_frame (); }
+
+/* Offset from SP to first arg on stack at first instruction of a function */
+
+#define SP_ARG0 (1 * 4)
diff --git a/gdb/config/m68k/tm-altos.h b/gdb/config/m68k/tm-altos.h
new file mode 100644
index 0000000000..b1b0733ffe
--- /dev/null
+++ b/gdb/config/m68k/tm-altos.h
@@ -0,0 +1,54 @@
+/* Target definitions for GDB on an Altos 3068 (m68k running SVR2)
+   Copyright 1987, 1989, 1991, 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.  */
+
+/* Define BPT_VECTOR if it is different than the default.
+   This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0xe
+
+/* Address of end of stack space.  */
+
+/*#define STACK_END_ADDR (0xffffff)*/
+#define STACK_END_ADDR (0x1000000)
+
+/* Amount PC must be decremented by after a breakpoint.
+   On the Altos, the kernel resets the pc to the trap instr */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* The only reason this is here is the tm-altos.h reference below.  It
+   was moved back here from tm-68k.h.  FIXME? */
+
+#define SKIP_PROLOGUE(pc)   \
+{ register int op = read_memory_integer (pc, 2);	\
+  if (op == 0047126)					\
+    pc += 4;   /* Skip link #word */			\
+  else if (op == 0044016)				\
+    pc += 6;   /* Skip link #long */			\
+  /* Not sure why branches are here.  */		\
+  /* From tm-isi.h, tm-altos.h */			\
+  else if (op == 0060000)				\
+    pc += 4;   /* Skip bra #word */			\
+  else if (op == 00600377)				\
+    pc += 6;   /* skip bra #long */			\
+  else if ((op & 0177400) == 0060000)			\
+    pc += 2;   /* skip bra #char */			\
+}
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-amix.h b/gdb/config/m68k/tm-amix.h
new file mode 100644
index 0000000000..b758da770a
--- /dev/null
+++ b/gdb/config/m68k/tm-amix.h
@@ -0,0 +1,77 @@
+/* Macro definitions for GDB on a Commodore Amiga running SVR4 (amix).
+   Copyright (C) 1991, Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+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.  */
+
+/* All Amiga's (so far) running UNIX have come standard with the floating
+   point coprocessor. */
+
+#define HAVE_68881
+
+/* Define BPT_VECTOR if it is different than the default.
+   This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0x1
+
+/* How much to decrement the PC after a trap.  Depends on kernel. */
+
+#define DECR_PC_AFTER_BREAK 0		/* No decrement required */
+
+/* Address of end of stack space.  Actually one byte past it.
+   This value is typically very OS dependent.
+   FIXME:  Check to see if SVR4 offers some machine independent way
+   of discovering this value and use it if so, and if we need it. */
+
+/* #define STACK_END_ADDR 0xc0800000 */
+
+/* Use the alternate method of determining valid frame chains. */
+
+#define FRAME_CHAIN_VALID_ALTERNATE
+
+#include "tm-sysv4.h"
+#include "m68k/tm-68k.h"
+
+/* Offsets (in target ints) into jmp_buf.  Not defined in any system header
+   file, so we have to step through setjmp/longjmp with a debugger and figure
+   them out.  As a double check, note that <setjmp> defines _JBLEN as 13,
+   which matches the number of elements we see saved by setjmp(). */
+
+#define JB_ELEMENT_SIZE sizeof(int)	/* jmp_buf[_JBLEN] is array of ints */
+
+#define JB_D2	0
+#define JB_D3	1
+#define JB_D4	2
+#define JB_D5	3
+#define JB_D6	4
+#define JB_D7	5
+#define JB_A1	6
+#define JB_A2	7
+#define JB_A3	8
+#define JB_A4	9
+#define JB_A5	10
+#define JB_A6	11
+#define JB_A7	12
+
+#define JB_PC	JB_A1	/* Setjmp()'s return PC saved in A1 */
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
diff --git a/gdb/config/m68k/tm-es1800.h b/gdb/config/m68k/tm-es1800.h
new file mode 100644
index 0000000000..f62f04348d
--- /dev/null
+++ b/gdb/config/m68k/tm-es1800.h
@@ -0,0 +1,60 @@
+/* Parameters for execution on ES-1800 emulator for 68000.
+   The code was originally written by Johan Holmberg TT/SJ Ericsson Telecom
+   AB and later modified by Johan Henriksson TT/SJ. It was adapted to GDB 4.0
+   by Jan Norden TX/DK.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define	GDBINIT_FILENAME	".esgdbinit"
+
+#define	DEFAULT_PROMPT		"(esgdb) "
+
+#define HAVE_68881
+
+#include "m68k/tm-68k.h"
+
+/* Longjmp stuff borrowed from sun3 configuration.  Don't know if correct. 
+   FIXME.  */
+/* Offsets (in target ints) into jmp_buf.  Not defined by Sun, but at least
+   documented in a comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_PSL 4
+#define JB_D2 5
+#define JB_D3 6
+#define JB_D4 7
+#define JB_D5 8
+#define JB_D6 9
+#define JB_D7 10
+#define JB_A2 11
+#define JB_A3 12
+#define JB_A4 13
+#define JB_A5 14
+#define JB_A6 15
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
diff --git a/gdb/config/m68k/tm-hp300bsd.h b/gdb/config/m68k/tm-hp300bsd.h
new file mode 100644
index 0000000000..4dc95e157a
--- /dev/null
+++ b/gdb/config/m68k/tm-hp300bsd.h
@@ -0,0 +1,50 @@
+/* Parameters for target machine Hewlett-Packard 9000/300, running bsd.
+   Copyright 1986, 1987, 1989, 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.  */
+
+/*
+ * Configuration file for HP9000/300 series machine running
+ * University of Utah's 4.3bsd port.  This is NOT for HP-UX.
+ * Problems to hpbsd-bugs@cs.utah.edu
+ */
+
+#define HAVE_68881
+
+/* Define BPT_VECTOR if it is different than the default.
+   This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0x2
+
+#define TARGET_NBPG 4096
+#define TARGET_UPAGES 3
+
+/* On the HP300, sigtramp is in the u area.  Gak!  User struct is not
+   mapped to the same virtual address in user/kernel address space
+   (hence STACK_END_ADDR as opposed to KERNEL_U_ADDR).  This tests
+   for the whole u area, since we don't necessarily have hp300bsd
+   include files around.  */
+#define IN_SIGTRAMP(pc, name) \
+  ((pc) >= STACK_END_ADDR   \
+   && (pc) < STACK_END_ADDR + TARGET_UPAGES * TARGET_NBPG \
+   )
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0xfff00000
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-hp300hpux.h b/gdb/config/m68k/tm-hp300hpux.h
new file mode 100644
index 0000000000..df2df4a230
--- /dev/null
+++ b/gdb/config/m68k/tm-hp300hpux.h
@@ -0,0 +1,31 @@
+/* Parameters for execution on an HP 9000 model 320, for GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 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.  */
+
+#define HAVE_68881
+
+/* Define BPT_VECTOR if it is different than the default.
+   This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0x1
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0xFFF00000
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-isi.h b/gdb/config/m68k/tm-isi.h
new file mode 100644
index 0000000000..da28c2fbb2
--- /dev/null
+++ b/gdb/config/m68k/tm-isi.h
@@ -0,0 +1,156 @@
+/* Definitions to target GDB on an ISI Optimum V (3.05) under 4.3bsd.
+   Copyright (C) 1987, 1989, 1991, 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.  */
+
+/* This has not been tested on ISI's running BSD 4.2, but it will probably
+   work.  */
+
+#define HAVE_68881
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0xfffe000
+
+/* Data segment starts at etext rounded up to DATAROUND in {N,Z}MAGIC files */
+
+#define DATAROUND	0x20000
+#define N_DATADDR(hdr)	(hdr.a_magic != OMAGIC ? \
+	(hdr.a_text + DATAROUND) & ~(DATAROUND-1) : hdr.a_text)
+
+/* Text segment starts at sizeof (struct exec) in {N,Z}MAGIC files */
+
+#define N_TXTADDR(hdr)	(hdr.a_magic != OMAGIC ? sizeof (struct exec) : 0)
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.
+   On the ISI, the kernel resets the pc to the trap instr */
+
+#define DECR_PC_AFTER_BREAK 0
+
+
+/* Return number of args passed to a frame.
+   Can return -1, meaning no way to tell.  */
+
+#define FRAME_NUM_ARGS(val, fi)  \
+{ register CORE_ADDR pc = FRAME_SAVED_PC (fi);			\
+  register int insn = 0177777 & read_memory_integer (pc, 2);	\
+  val = 0;							\
+  if (insn == 0047757 || insn == 0157374)  /* lea W(sp),sp or addaw #W,sp */ \
+    val = read_memory_integer (pc + 2, 2);			\
+  else if ((insn & 0170777) == 0050217 /* addql #N, sp */	\
+	   || (insn & 0170777) == 0050117)  /* addqw */		\
+    { val = (insn >> 9) & 7; if (val == 0) val = 8; }		\
+  else if (insn == 0157774) /* addal #WW, sp */			\
+    val = read_memory_integer (pc + 2, 4);			\
+  val >>= 2; }
+
+/* Put here the code to store, into a struct frame_saved_regs,
+   the addresses of the saved registers of frame described by FRAME_INFO.
+   This includes special registers such as pc and fp saved in special
+   ways in the stack frame.  sp is even more special:
+   the address we return for it IS the sp for the next frame.  */
+
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)		\
+{ register int regnum;							\
+  register int regmask;							\
+  register CORE_ADDR next_addr;						\
+  register CORE_ADDR pc;						\
+  register int insn;							\
+  register int offset;							\
+  bzero (&frame_saved_regs, sizeof frame_saved_regs);			\
+  if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
+      && (frame_info)->pc <= (frame_info)->frame)				\
+    { next_addr = (frame_info)->frame;					\
+      pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
+  else   								\
+    { pc = get_pc_function_start ((frame_info)->pc); 			\
+      /* Verify we have a link a6 instruction next,			\
+	 or a branch followed by a link a6 instruction;			\
+	 if not we lose.  If we win, find the address above the saved   \
+	 regs using the amount of storage from the link instruction.  */\
+retry:									\
+      insn = read_memory_integer (pc, 2);				\
+      if (insn == 044016)						\
+	next_addr = (frame_info)->frame - read_memory_integer (pc += 2, 4), pc+=4; \
+      else if (insn == 047126)						\
+	next_addr = (frame_info)->frame - read_memory_integer (pc += 2, 2), pc+=2; \
+      else if ((insn & 0177400) == 060000)	/* bra insn */		\
+	{ offset = insn & 0377;						\
+          pc += 2;				/* advance past bra */	\
+	  if (offset == 0)			/* bra #word */		\
+	    offset = read_memory_integer (pc, 2), pc += 2;		\
+	  else if (offset == 0377)		/* bra #long */		\
+	    offset = read_memory_integer (pc, 4), pc += 4;		\
+	  pc += offset;							\
+	  goto retry;							\
+      } else goto lose;							\
+      /* If have an addal #-n, sp next, adjust next_addr.  */		\
+      if ((0177777 & read_memory_integer (pc, 2)) == 0157774)		\
+	next_addr += read_memory_integer (pc += 2, 4), pc += 4;		\
+    }									\
+  /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */	\
+  insn = read_memory_integer (pc, 2), pc += 2;				\
+  regmask = read_memory_integer (pc, 2);				\
+  if ((insn & 0177760) == 022700)	/* movl rn, (sp) */		\
+    (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr;	\
+  else if ((insn & 0177760) == 024700)	/* movl rn, -(sp) */		\
+    (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr-=4; \
+  else if (insn == 0044327)		/* moveml mask, (sp) */		\
+    { pc += 2;								\
+      /* Regmask's low bit is for register 0, the first written */	\
+      next_addr -= 4;							\
+      for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr += 4);		\
+  } else if (insn == 0044347)		/* moveml mask, -(sp) */	\
+    { pc += 2;								\
+      /* Regmask's low bit is for register 15, the first pushed */	\
+      for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1)		\
+	if (regmask & 1)						\
+          (frame_saved_regs).regs[regnum] = (next_addr -= 4); }		\
+  /* clrw -(sp); movw ccr,-(sp) may follow.  */				\
+  if (read_memory_integer (pc, 2) == 041147 				\
+      && read_memory_integer (pc+2, 2) == 042347)			\
+    (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4);		\
+  lose: ;								\
+  (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8;		\
+  (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame;		\
+  (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4;		\
+}
+
+/* The only reason this is here is the tm-isi.h reference below.  It
+   was moved back here from tm-68k.h.  FIXME? */
+
+#define SKIP_PROLOGUE(pc)   \
+{ register int op = read_memory_integer (pc, 2);	\
+  if (op == 0047126)					\
+    pc += 4;   /* Skip link #word */			\
+  else if (op == 0044016)				\
+    pc += 6;   /* Skip link #long */			\
+  /* Not sure why branches are here.  */		\
+  /* From tm-isi.h, tm-altos.h */			\
+  else if (op == 0060000)				\
+    pc += 4;   /* Skip bra #word */			\
+  else if (op == 00600377)				\
+    pc += 6;   /* skip bra #long */			\
+  else if ((op & 0177400) == 0060000)			\
+    pc += 2;   /* skip bra #char */			\
+}
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-news.h b/gdb/config/m68k/tm-news.h
new file mode 100644
index 0000000000..7f784f8055
--- /dev/null
+++ b/gdb/config/m68k/tm-news.h
@@ -0,0 +1,85 @@
+/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
+   Copyright 1987, 1989, 1991, 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.  */
+
+/* See following cpu type determination macro to get the machine type.
+  
+Here is an m-news.h file for gdb.  It supports the 68881 registers.
+                                           by hikichi@srava.sra.junet
+  
+* Support Sun assembly format instead of Motorola one.
+* Ptrace for handling floating register has a bug(before NEWS OS version 2.2),
+* After NEWS OS version 3.2, some of ptrace's bug is fixed.
+  But we cannot change the floating register(see adb(1) in OS 3.2) yet.  */
+
+#define HAVE_68881
+
+/* Use to compute STACK_END_ADDR.  */
+#define TARGET_UPAGES 2
+#define TARGET_NBPG 4096
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR (0x80000000 - TARGET_UPAGES * TARGET_NBPG)
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+/* when it return the floating value, use the FP0 in NEWS.  */
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
+      { \
+	REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, \
+			       &REGBUF[REGISTER_BYTE (FP0_REGNUM)], VALBUF); \
+      } \
+    else \
+      bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE)); }
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+
+/* when it return the floating value, use the FP0 in NEWS.  */
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
+      { \
+	char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
+	REGISTER_CONVERT_TO_RAW (FP0_REGNUM, VALBUF, raw_buf); \
+	write_register_bytes (FP0_REGNUM, \
+			      raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
+      } \
+    else \
+      write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)); }
+
+/* Return number of args passed to a frame.
+   Can return -1, meaning no way to tell.  */
+
+#define FRAME_NUM_ARGS(val, fi)  \
+{ register CORE_ADDR pc = FRAME_SAVED_PC (fi);			\
+  register int insn = 0177777 & read_memory_integer (pc, 2);	\
+  val = 0;							\
+  if (insn == 0047757 || insn == 0157374)  /* lea W(sp),sp or addaw #W,sp */ \
+    val = read_memory_integer (pc + 2, 2);			\
+  else if ((insn & 0170777) == 0050217 /* addql #N, sp */	\
+	   || (insn & 0170777) == 0050117)  /* addqw */		\
+    { val = (insn >> 9) & 7; if (val == 0) val = 8; }		\
+  else if (insn == 0157774) /* addal #WW, sp */			\
+    val = read_memory_integer (pc + 2, 4);			\
+  val >>= 2; }
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-os68k.h b/gdb/config/m68k/tm-os68k.h
new file mode 100644
index 0000000000..bf50c5cdb0
--- /dev/null
+++ b/gdb/config/m68k/tm-os68k.h
@@ -0,0 +1,47 @@
+/* Parameters for execution on VxWorks 68k's, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+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.  */
+
+#define	GDBINIT_FILENAME	".os68gdbinit"
+
+#define	DEFAULT_PROMPT		"(os68k) "
+
+#include "m68k/tm-68k.h"
+
+/* We have more complex, useful breakpoints on the target.  */
+#undef DECR_PC_AFTER_BREAK
+#define	DECR_PC_AFTER_BREAK	0
+
+/* We are guaranteed to have a zero frame pointer at bottom of stack, too. */
+#undef	FRAME_CHAIN
+#undef	FRAME_CHAIN_VALID
+
+/* Takes the current frame-struct pointer and returns the chain-pointer
+   to get to the calling frame.
+
+   If our current frame pointer is zero, we're at the top; else read out
+   the saved FP from memory pointed to by the current FP.  */
+
+#define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0)
+
+/* If the chain pointer is zero (either because the saved value fetched
+   by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN
+   never fetched anything), we are at the top of the stack.  */
+
+#define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0)
diff --git a/gdb/config/m68k/tm-st2000.h b/gdb/config/m68k/tm-st2000.h
new file mode 100644
index 0000000000..64467bec73
--- /dev/null
+++ b/gdb/config/m68k/tm-st2000.h
@@ -0,0 +1,22 @@
+/* Parameters for a Tandem ST2000 phone switch.
+   Copyright (C) 1986, 1987, 1989, 199 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.  */
+
+#define HAVE_68881		/* GDB won't compile without this */
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-sun2.h b/gdb/config/m68k/tm-sun2.h
new file mode 100644
index 0000000000..1d2f85d230
--- /dev/null
+++ b/gdb/config/m68k/tm-sun2.h
@@ -0,0 +1,27 @@
+/* Parameters for execution on a Sun, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Address of the end of stack space.  We get this from the system
+   include files. */
+
+#include <sys/types.h>
+#include <machine/vmparam.h>
+#define STACK_END_ADDR USRSTACK
+
+#include "m68k/tm-68k.h"
diff --git a/gdb/config/m68k/tm-sun2os4.h b/gdb/config/m68k/tm-sun2os4.h
new file mode 100644
index 0000000000..c492c9cba2
--- /dev/null
+++ b/gdb/config/m68k/tm-sun2os4.h
@@ -0,0 +1,20 @@
+/* Copyright (C) 1990, 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 "m68k/tm-sun2.h"
+#include "tm-sunos.h"
diff --git a/gdb/config/m68k/tm-sun3.h b/gdb/config/m68k/tm-sun3.h
new file mode 100644
index 0000000000..1a698f369f
--- /dev/null
+++ b/gdb/config/m68k/tm-sun3.h
@@ -0,0 +1,67 @@
+/* Parameters for execution on a Sun, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define HAVE_68881
+
+/* Let native-versus-cross support code know we are targeting sun3,
+   and modify registers to include sun3 fpustate register.  */
+
+#define GDB_TARGET_IS_SUN3 1
+
+#include "m68k/tm-68k.h"
+
+/* Offsets (in target ints) into jmp_buf.  Not defined by Sun, but at least
+   documented in a comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_PSL 4
+#define JB_D2 5
+#define JB_D3 6
+#define JB_D4 7
+#define JB_D5 8
+#define JB_D6 9
+#define JB_D7 10
+#define JB_A2 11
+#define JB_A3 12
+#define JB_A4 13
+#define JB_A5 14
+#define JB_A6 15
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
+
+#undef SAVED_PC_AFTER_CALL
+
+#ifdef __STDC__
+struct frame_info;
+#endif
+
+extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
+
+#define SAVED_PC_AFTER_CALL(frame) \
+  m68k_saved_pc_after_call(frame)
diff --git a/gdb/config/m68k/tm-sun3os4.h b/gdb/config/m68k/tm-sun3os4.h
new file mode 100644
index 0000000000..cd7be01246
--- /dev/null
+++ b/gdb/config/m68k/tm-sun3os4.h
@@ -0,0 +1,21 @@
+/* Target machine parameters for Sun-3 under SunOS 4.x, for GDB.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "m68k/tm-sun3.h"
+#include "tm-sunos.h"
diff --git a/gdb/config/m68k/tm-vx68.h b/gdb/config/m68k/tm-vx68.h
new file mode 100644
index 0000000000..8ce67a166d
--- /dev/null
+++ b/gdb/config/m68k/tm-vx68.h
@@ -0,0 +1,78 @@
+/* Target machine description for VxWorks 68k's, for GDB, the GNU debugger.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+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.  */
+
+#define	GDBINIT_FILENAME	".vxgdbinit"
+
+#define	DEFAULT_PROMPT		"(vxgdb) "
+
+#define HAVE_68881
+
+/* We have more complex, useful breakpoints on the target.  */
+#define	DECR_PC_AFTER_BREAK	0
+
+#include "m68k/tm-68k.h"
+
+/* We are guaranteed to have a zero frame pointer at bottom of stack, too. */
+#undef	FRAME_CHAIN
+#undef	FRAME_CHAIN_VALID
+
+/* Takes the current frame-struct pointer and returns the chain-pointer
+   to get to the calling frame.
+
+   If our current frame pointer is zero, we're at the top; else read out
+   the saved FP from memory pointed to by the current FP.  */
+
+#define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0)
+
+/* If the chain pointer is zero (either because the saved value fetched
+   by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN
+   never fetched anything), we are at the top of the stack.  */
+
+#define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0)
+
+/* FIXME, Longjmp information stolen from Sun-3 config.  Dunno if right.  */
+/* Offsets (in target ints) into jmp_buf.  Not defined by Sun, but at least
+   documented in a comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_PSL 4
+#define JB_D2 5
+#define JB_D3 6
+#define JB_D4 7
+#define JB_D5 8
+#define JB_D6 9
+#define JB_D7 10
+#define JB_A2 11
+#define JB_A3 12
+#define JB_A4 13
+#define JB_A5 14
+#define JB_A6 15
+
+/* Figure out where the longjmp will land.  Slurp the args out of the stack.
+   We expect the first arg to be a pointer to the jmp_buf structure from which
+   we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
diff --git a/gdb/config/m68k/vxworks68.mt b/gdb/config/m68k/vxworks68.mt
new file mode 100644
index 0000000000..b37edbd3b3
--- /dev/null
+++ b/gdb/config/m68k/vxworks68.mt
@@ -0,0 +1,3 @@
+# Target: VxWorks running on a 68000
+TDEPFILES= exec.o m68k-pinsn.o m68k-tdep.o remote-vx.o xdr_ld.o xdr_ptrace.o xdr_rdb.o
+TM_FILE= tm-vx68.h
diff --git a/gdb/config/m68k/xm-3b1.h b/gdb/config/m68k/xm-3b1.h
new file mode 100644
index 0000000000..cfd71e0f2e
--- /dev/null
+++ b/gdb/config/m68k/xm-3b1.h
@@ -0,0 +1,85 @@
+/* Parameters for execution on a 3b1.
+   Copyright (C) 1986, 1987, 1989 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.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#define HAVE_TERMIO
+#define USG
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+#define KERNEL_U_ADDR 0x70000
+
+#define REGISTER_U_ADDR(addr, blockend, regno)		\
+{ addr = blockend + regno * 4; }
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel $ end, sp");      \
+  asm ("clrl fp"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+
+#endif
diff --git a/gdb/config/m68k/xm-altos.h b/gdb/config/m68k/xm-altos.h
new file mode 100644
index 0000000000..ea840161b5
--- /dev/null
+++ b/gdb/config/m68k/xm-altos.h
@@ -0,0 +1,202 @@
+/* Definitions to make GDB run on an Altos 3068 (m68k running SVR2)
+   Copyright (C) 1987,1989 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.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* The altos support would make a good base for a port to other USGR2 systems
+   (like the 3b1 and the Convergent miniframe).  */
+
+/* This is only needed in one file, but it's cleaner to put it here than
+   putting in more #ifdef's.  */
+#include <sys/page.h>
+#include <sys/net.h>
+
+#define USG
+
+#define HAVE_TERMIO
+
+#define CBREAK XTABS	/* It takes all kinds... */
+
+#ifndef R_OK
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+#define F_OK 0
+#endif
+
+/* Get sys/wait.h ie. from a Sun and edit it a little (mc68000 to m68k) */
+/* Why bother?  */
+#if 0
+#define HAVE_WAIT_STRUCT
+#endif
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values. */
+
+#define KERNEL_U_ADDR 0x1fbf000
+
+#define REGISTER_U_ADDR(addr, blockend, regno)		\
+{	if (regno <= SP_REGNUM) \
+	  addr = blockend + regno * 4; \
+	else if (regno == PS_REGNUM) \
+	  addr = blockend + regno * 4 + 4; \
+	else if (regno == PC_REGNUM) \
+	  addr = blockend + regno * 4 + 2; \
+}
+
+#define REGISTER_ADDR(u_ar0, regno)					\
+  (((regno) < PS_REGNUM)						\
+   ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])	\
+   : (((regno) == PS_REGNUM)						\
+      ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))		\
+      : (&((struct exception_stack *) (u_ar0))->e_PC)))
+
+#define FP_REGISTER_ADDR(u, regno)					\
+  (((char *)								\
+    (((regno) < FPC_REGNUM)						\
+     ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
+     : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))	\
+   - ((char *) (& u)))
+
+
+#ifndef __GNUC__
+#undef USE_GAS
+#define ALTOS_AS
+#else
+#define USE_GAS
+#endif
+
+/* Motorola assembly format */
+#if !defined(USE_GAS) && !defined(ALTOS)
+#define MOTOROLA
+#endif
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#ifdef MOTOROLA
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("move.l $ end, sp");      \
+  asm ("clr.l fp"); }
+#else
+#ifdef ALTOS_AS
+#define INIT_STACK(beg, end)  \
+{ asm ("global end");         \
+  asm ("mov.l &end,%sp");      \
+  asm ("clr.l %fp"); }
+#else
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel $ end, sp");      \
+  asm ("clrl fp"); }
+#endif
+#endif
+
+/* Push the frame pointer register on the stack.  */
+#ifdef MOTOROLA
+#define PUSH_FRAME_PTR        \
+  asm ("move.l fp, -(sp)");
+#else
+#ifdef ALTOS_AS
+#define PUSH_FRAME_PTR        \
+  asm ("mov.l %fp, -(%sp)");
+#else
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+#endif
+#endif
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#ifdef MOTOROLA
+#define POP_FRAME_PTR  \
+  asm ("move.l (sp), fp");
+#else
+#ifdef ALTOS_AS
+#define POP_FRAME_PTR  \
+  asm ("mov.l (%sp), %fp");
+#else
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+#endif
+#endif
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#ifdef MOTOROLA
+#define PUSH_REGISTERS        \
+{ asm ("clr.w -(sp)");	      \
+  asm ("pea (10,sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+#else
+#ifdef ALTOS_AS
+#define PUSH_REGISTERS        \
+{ asm ("clr.w -(%sp)");	      \
+  asm ("pea (10,%sp)");	      \
+  asm ("movm.l &0xfffe,-(%sp)"); }
+#else
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+#endif
+#endif
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#ifdef MOTOROLA
+#define POP_REGISTERS          \
+{ asm ("subi.l $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+#else
+#ifdef ALTOS_AS
+#define POP_REGISTERS          \
+{ asm ("sub.l &8,28(%sp)");     \
+  asm ("movem (%sp),&0xffff"); \
+  asm ("rte"); }
+#else
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+#endif
+#endif
diff --git a/gdb/config/m68k/xm-amix.h b/gdb/config/m68k/xm-amix.h
new file mode 100644
index 0000000000..ffd0192d51
--- /dev/null
+++ b/gdb/config/m68k/xm-amix.h
@@ -0,0 +1,45 @@
+/* Macro definitions for GDB on a Commodore Amiga running SVR4 (amix)
+   Copyright 1991, 1992 Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygnus.com)
+
+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.  */
+
+/* Pick up most of what we need from the generic m68k host include file. */
+
+#include "m68k/xm-m68k.h"
+
+/* Pick up more stuff from the generic SVR4 host include file. */
+
+#include "xm-sysv4.h"
+
+/* The native AT&T compiler for m68k/SVR4 complains about using volatile
+   to indicate functions that never return.  So shut it up by simply
+   defining away "NORETURN", which is normally defined to "volatile". */
+
+#ifndef __GNUC__
+# define NORETURN /**/
+#endif
+
+/* If you expect to use the mmalloc package to obtain mapped symbol files,
+   for now you have to specify some parameters that determine how gdb places
+   the mappings in it's address space.  See the comments in map_to_address()
+   for details.  This is expected to only be a short term solution.  Yes it
+   is a kludge.
+   FIXME:  Make this more automatic. */
+
+#define MMAP_BASE_ADDRESS	0xC2000000	/* First mapping here */
+#define MMAP_INCREMENT		0x01000000	/* Increment to next mapping */
diff --git a/gdb/config/m68k/xm-apollo68b.h b/gdb/config/m68k/xm-apollo68b.h
new file mode 100644
index 0000000000..9d1d39c0dd
--- /dev/null
+++ b/gdb/config/m68k/xm-apollo68b.h
@@ -0,0 +1,24 @@
+/* Macro defintions for an Apollo 68k in BSD mode
+   Copyright (C) 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#define ALIGN_STACK_ON_STARTUP
+
+extern char *strdup();
diff --git a/gdb/config/m68k/xm-apollo68v.h b/gdb/config/m68k/xm-apollo68v.h
new file mode 100644
index 0000000000..612952313d
--- /dev/null
+++ b/gdb/config/m68k/xm-apollo68v.h
@@ -0,0 +1,44 @@
+/* Macro defintions for an Apollo.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/*
+ * Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu)
+ * July 1988
+ */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* I'm running gdb 3.4 under 386/ix 2.0.2, which is a derivative of AT&T's
+Sys V/386 3.2.
+
+On some machines, gdb crashes when it's starting up while calling the
+vendor's termio tgetent() routine.  It always works when run under
+itself (actually, under 3.2, it's not an infinitely recursive bug.)
+After some poking around, it appears that depending on the environment
+size, or whether you're running YP, or the phase of the moon or something,
+the stack is not always long-aligned when main() is called, and tgetent()
+takes strong offense at that.  On some machines this bug never appears, but
+on those where it does, it occurs quite reliably.  */
+#define ALIGN_STACK_ON_STARTUP
+
+/* define USG if you are using sys5 /usr/include's */
+#define USG
+
+#define HAVE_TERMIO
+
diff --git a/gdb/config/m68k/xm-hp300bsd.h b/gdb/config/m68k/xm-hp300bsd.h
new file mode 100644
index 0000000000..54800fdc22
--- /dev/null
+++ b/gdb/config/m68k/xm-hp300bsd.h
@@ -0,0 +1,103 @@
+/* Parameters for hosting on a Hewlett-Packard 9000/300, running bsd.
+   Copyright 1986, 1987, 1989, 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.  */
+
+/*
+ * Configuration file for HP9000/300 series machine running
+ * University of Utah's 4.3bsd (or 4.4BSD) port.  This is NOT for HP-UX.
+ * Problems to hpbsd-bugs@cs.utah.edu
+ */
+
+#define	HOST_BYTE_ORDER	BIG_ENDIAN
+
+/* Avoid "INT_MIN redefined" preprocessor warnings -- by defining them here,
+   exactly the same as in the system <limits.h> file.  */
+#define	UINT_MAX	4294967295	/* max value for an unsigned int */
+#define	INT_MAX		2147483647	/* max value for an int */
+#define	INT_MIN		(-2147483647-1)	/* min value for an int */
+#define	LONG_MAX	2147483647	/* max value for a long */
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* Get kernel u area address at run-time using BSD style nlist ().  */
+#define KERNEL_U_ADDR_BSD
+
+/* Kernel is a bit tenacious about sharing text segments, disallowing bpts.  */
+#define	ONE_PROCESS_WRITETEXT
+
+/* psignal's definition in 4.4BSD conflicts with the one in defs.h. 
+   But there *is* no psignal definition in 4.3BSD.  So we avoid the defs.h
+   version here, and supply our own (matching) one.  */
+#define PSIGNAL_IN_SIGNAL_H
+void    psignal PARAMS ((unsigned int, const char *));
+
+extern char *strdup PARAMS ((const char *));
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel #end, sp");      \
+  asm ("movel #0,a6"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel a6,sp@-");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl sp@,a6");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea sp@(10)");	      \
+  asm ("movem #0xfffe,sp@-"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil #8,sp@(28)");     \
+  asm ("movem sp@,#0xffff"); \
+  asm ("rte"); }
diff --git a/gdb/config/m68k/xm-hp300hpux.h b/gdb/config/m68k/xm-hp300hpux.h
new file mode 100644
index 0000000000..54979b530a
--- /dev/null
+++ b/gdb/config/m68k/xm-hp300hpux.h
@@ -0,0 +1,173 @@
+/* Parameters for HP 9000 model 320 hosting, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* HP/UX is USG, but it does have <ptrace.h>  */
+#include <sys/ptrace.h>
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* Define this to indicate problems with traps after continuing.  */
+#define HP_OS_BUG
+
+/* Set flag to indicate whether HP's assembler is in use. */
+#ifdef __GNUC__
+#ifdef __HPUX_ASM__
+#define HPUX_ASM
+#endif
+#else /* not GNU C.  */
+#define HPUX_ASM
+#endif /* not GNU C.  */
+
+/* Define this for versions of hp-ux older than 6.0 */
+/* #define HPUX_VERSION_5 */
+
+/* define USG if you are using sys5 /usr/include's */
+#undef USG	/* In case it was defined in the Makefile for cplus-dem.c */
+#define USG
+
+/* The mem functions are in <string.h>.  */
+#undef MEM_FNS_DECLARED
+#define MEM_FNS_DECLARED 1
+
+#define HAVE_TERMIO
+
+/* Get rid of any system-imposed stack limit if possible.  */
+/* The hp9k320.h doesn't seem to have this feature.  */
+/* #define SET_STACK_LIMIT_HUGE */
+/* So we'll just have to avoid big alloca's.  */
+#define BROKEN_LARGE_ALLOCA
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+#ifdef HPUX_VERSION_5
+#define KERNEL_U_ADDR 0x00979000
+#else /* Not HPUX version 5.  */
+/* Use HPUX-style nlist() to get kernel_u_addr.  */
+#define KERNEL_U_ADDR_HPUX
+#endif /* Not HPUX version 5.  */
+
+#define REGISTER_ADDR(u_ar0, regno)					\
+  (unsigned int)							\
+  (((regno) < PS_REGNUM)						\
+   ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])	\
+   : (((regno) == PS_REGNUM)						\
+      ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))		\
+      : (&((struct exception_stack *) (u_ar0))->e_PC)))
+
+#define FP_REGISTER_ADDR(u, regno)					\
+  (((char *)								\
+    (((regno) < FPC_REGNUM)						\
+     ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
+     : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))	\
+   - ((char *) (& u)))
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+#ifndef HPUX_ASM
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel $ end, sp");      \
+  asm ("clrl fp"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+
+#else /* HPUX_ASM */
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)						\
+{ asm ("global end");							\
+  asm ("mov.l &end,%sp");						\
+  asm ("clr.l %a6"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR							\
+  asm ("mov.l %fp,-(%sp)");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR							\
+  asm ("mov.l (%sp),%fp");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS							\
+{ asm ("clr.w -(%sp)");							\
+  asm ("pea 10(%sp)");							\
+  asm ("movm.l &0xfffe,-(%sp)"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS							\
+{ asm ("subi.l &8,28(%sp)");						\
+  asm ("mov.m (%sp),&0xffff");						\
+  asm ("rte"); }
+
+#endif /* HPUX_ASM */
diff --git a/gdb/config/m68k/xm-isi.h b/gdb/config/m68k/xm-isi.h
new file mode 100644
index 0000000000..1934ff58d9
--- /dev/null
+++ b/gdb/config/m68k/xm-isi.h
@@ -0,0 +1,92 @@
+/* Definitions to make GDB run on an ISI Optimum V (3.05) under 4.3bsd.
+   Copyright 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* This has not been tested on ISI's running BSD 4.2, but it will probably
+   work.  */
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+/*#define KERNEL_U_ADDR 0x10800000*/
+#define KERNEL_U_ADDR 0
+
+/* expects blockend to be u.u_ar0 */
+extern int rloc[];  	/* Defined in isi-dep.c */
+#define REGISTER_U_ADDR(addr, blockend, regno)                  \
+{       blockend &= UPAGES*NBPG - 1;                            \
+	if (regno < 18) addr = (int)blockend + rloc[regno]*4;  	\
+        else if (regno < 26) addr = (int) &((struct user *)0)->u_68881_regs \
+            + (regno - 18) * 12;                                \
+        else if (regno < 29) addr = (int) &((struct user *)0)->u_68881_regs \
+            + 8 * 12 + (regno - 26) * 4;                        \
+}
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movl $ end, sp");      \
+  asm ("clrl fp"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
diff --git a/gdb/config/m68k/xm-m68k.h b/gdb/config/m68k/xm-m68k.h
new file mode 100644
index 0000000000..f417e97b56
--- /dev/null
+++ b/gdb/config/m68k/xm-m68k.h
@@ -0,0 +1,22 @@
+/* Macro definitions for running gdb on host machines with m68k cpu's.
+   Copyright (C) 1991, Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+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.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
diff --git a/gdb/config/m68k/xm-news.h b/gdb/config/m68k/xm-news.h
new file mode 100644
index 0000000000..147063dc05
--- /dev/null
+++ b/gdb/config/m68k/xm-news.h
@@ -0,0 +1,140 @@
+/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
+   Copyright 1987, 1989, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#define HAVE_WAIT_STRUCT
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* We can't use "isatty" or "fileno" on this machine.  This isn't good,
+   but it will have to do.  */
+#define ISATTY(FP)	((FP) == stdin || (FP) == stdout)
+
+/* THis is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values. */
+
+#define KERNEL_U_ADDR UADDR
+
+/* The offsets in this macro are from /usr/include/machine/reg.h */
+
+#define REGISTER_U_ADDR(addr, blockend, regno)		\
+{   static char offsets[] = { \
+	/*d0-d7:*/1,2,3,4,5,6,7,8, \
+	/*a0-a6:*/9,10,11,12,13,14,15, /*sp:*/-4, /*ps:*/0, /*pc:*/-1, \
+	/*fp0-fp7:*/19,22,25,28,31,34,37,40, /*fpc:*/16,17,18 }; \
+	addr = blockend + 4 * offsets[regno]; \
+}
+
+/* NewsOS 3 apparently dies on large alloca's -- roland@ai.mit.edu.  */
+#define	BROKEN_LARGE_ALLOCA
+
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Use GNU assembler instead of standard assembler */
+#define USE_GAS
+
+/* Motorola assembly format */
+#ifndef USE_GAS
+#define MOTOROLA
+#endif
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#ifdef MOTOROLA
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("move.l $ end, sp");      \
+  asm ("clr.l fp"); }
+#else
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel $ end, sp");      \
+  asm ("clrl fp"); }
+#endif
+
+/* Push the frame pointer register on the stack.  */
+#ifdef MOTOROLA
+#define PUSH_FRAME_PTR        \
+  asm ("move.l fp, -(sp)");
+#else
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+#endif
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#ifdef MOTOROLA
+#define POP_FRAME_PTR  \
+  asm ("move.l (sp), fp");
+#else
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+#endif
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#ifdef MOTOROLA
+#define PUSH_REGISTERS        \
+{ asm ("clr.w -(sp)");	      \
+  asm ("pea (10,sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+#else
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+#endif
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#ifdef MOTOROLA
+#define POP_REGISTERS          \
+{ asm ("subi.l $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+#else
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
+#endif
diff --git a/gdb/config/m68k/xm-news1000.h b/gdb/config/m68k/xm-news1000.h
new file mode 100644
index 0000000000..40ac415584
--- /dev/null
+++ b/gdb/config/m68k/xm-news1000.h
@@ -0,0 +1,26 @@
+/* Parameters for a Sony/NEWS series 1000 with News-OS version 3,
+   for GDB, the GNU debugger.
+   Copyright (C) 1990 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.  */
+
+/* This is required by Sony include files like <sys/user.h> so we
+   get the right offset into the u area.  Relying on the compiler
+   to define this only works for cc, not gcc.  */
+#undef mc68030
+#define mc68030
+#include "m68k/xm-news.h"
diff --git a/gdb/config/m68k/xm-sun2.h b/gdb/config/m68k/xm-sun2.h
new file mode 100644
index 0000000000..1d6d341414
--- /dev/null
+++ b/gdb/config/m68k/xm-sun2.h
@@ -0,0 +1,82 @@
+/* Parameters for execution on a Sun, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989 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.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+#define KERNEL_U_ADDR 0x2800
+
+/* Enable use of alternate code for Sun's format of core dump file.  */
+
+#define NEW_SUN_CORE
+
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel $ end, sp");      \
+  asm ("clrl fp"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel fp, -(sp)");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl (sp), fp");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea 10(sp)");	      \
+  asm ("movem $ 0xfffe,-(sp)"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil $8,28(sp)");     \
+  asm ("movem (sp),$ 0xffff"); \
+  asm ("rte"); }
diff --git a/gdb/config/m68k/xm-sun3.h b/gdb/config/m68k/xm-sun3.h
new file mode 100644
index 0000000000..3970929e5b
--- /dev/null
+++ b/gdb/config/m68k/xm-sun3.h
@@ -0,0 +1,85 @@
+/* Parameters for execution on a Sun, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989 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.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* Enable use of alternate code for Sun's format of core dump file.  */
+
+#define NEW_SUN_CORE
+
+/* We have to grab the regs since we store all regs at once.  */
+
+#define CHILD_PREPARE_TO_STORE() \
+	read_register_bytes (0, (char *)NULL, REGISTER_BYTES)
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* Map machine fault codes into signal numbers.
+   First subtract 0, divide by 4, then index in a table.
+   Faults for which the entry in this table is 0
+   are not handled by KDB; the program's own trap handler
+   gets to handle then.  */
+
+#define FAULT_CODE_ORIGIN 0
+#define FAULT_CODE_UNITS 4
+#define FAULT_TABLE    \
+{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  SIGILL }
+
+/* Start running with a stack stretching from BEG to END.
+   BEG and END should be symbols meaningful to the assembler.
+   This is used only for kdb.  */
+
+#define INIT_STACK(beg, end)  \
+{ asm (".globl end");         \
+  asm ("movel #end, sp");      \
+  asm ("movel #0,a6"); }
+
+/* Push the frame pointer register on the stack.  */
+#define PUSH_FRAME_PTR        \
+  asm ("movel a6,sp@-");
+
+/* Copy the top-of-stack to the frame pointer register.  */
+#define POP_FRAME_PTR  \
+  asm ("movl sp@,a6");
+
+/* After KDB is entered by a fault, push all registers
+   that GDB thinks about (all NUM_REGS of them),
+   so that they appear in order of ascending GDB register number.
+   The fault code will be on the stack beyond the last register.  */
+
+#define PUSH_REGISTERS        \
+{ asm ("clrw -(sp)");	      \
+  asm ("pea sp@(10)");	      \
+  asm ("movem #0xfffe,sp@-"); }
+
+/* Assuming the registers (including processor status) have been
+   pushed on the stack in order of ascending GDB register number,
+   restore them and return to the address in the saved PC register.  */
+
+#define POP_REGISTERS          \
+{ asm ("subil #8,sp@(28)");     \
+  asm ("movem sp@,#0xffff"); \
+  asm ("rte"); }
diff --git a/gdb/config/m68k/xm-sun3os4.h b/gdb/config/m68k/xm-sun3os4.h
new file mode 100644
index 0000000000..72af7c79fa
--- /dev/null
+++ b/gdb/config/m68k/xm-sun3os4.h
@@ -0,0 +1,48 @@
+/* Macro definitions for a sun 3 running os 4.
+   Copyright (C) 1989, 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 "m68k/xm-sun3.h"
+#define FPU
+
+/* Large alloca's fail because the attempt to increase the stack limit in
+   main() fails because shared libraries are allocated just below the initial
+   stack limit.  The SunOS kernel will not allow the stack to grow into
+   the area occupied by the shared libraries.  Sun knows about this bug
+   but has no obvious fix for it.  */
+#define BROKEN_LARGE_ALLOCA
+
+/* SunOS 4.x has memory mapped files.  */
+
+#define HAVE_MMAP
+
+/* If you expect to use the mmalloc package to obtain mapped symbol files,
+   for now you have to specify some parameters that determine how gdb places
+   the mappings in it's address space.  See the comments in map_to_address()
+   for details.  This is expected to only be a short term solution.  Yes it
+   is a kludge.
+   FIXME:  Make this more automatic. */
+
+#define MMAP_BASE_ADDRESS	0xE0000000	/* First mapping here */
+#define MMAP_INCREMENT		0x01000000	/* Increment to next mapping */
+
+/* Prevent type conflicts between yacc malloc decls and defs.h */
+#define MALLOC_INCOMPATIBLE
+extern char *malloc();
+extern char *realloc();
+extern void free();