Initial creation of sourceware repositorygdb-4_18-branchpoint

20 files changed, 1061 insertions, 0 deletions

diff --git a/gdb/config/m88k/cxux.mh b/gdb/config/m88k/cxux.mh
new file mode 100644
index 0000000..cb02225
--- /dev/null
+++ b/gdb/config/m88k/cxux.mh
@@ -0,0 +1,7 @@
+# Host: Motorola 88k running CX/UX
+
+XM_FILE= xm-cxux.h
+XDEPFILES= 
+
+NAT_FILE= nm-cxux.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o cxux-nat.o corelow.o core-aout.o
diff --git a/gdb/config/m88k/cxux.mt b/gdb/config/m88k/cxux.mt
new file mode 100644
index 0000000..295de84
--- /dev/null
+++ b/gdb/config/m88k/cxux.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 88k running Harris CX/UX
+TDEPFILES= m88k-tdep.o remote-bug.o
+TM_FILE= tm-cxux.h
diff --git a/gdb/config/m88k/delta88.mh b/gdb/config/m88k/delta88.mh
new file mode 100644
index 0000000..824967a
--- /dev/null
+++ b/gdb/config/m88k/delta88.mh
@@ -0,0 +1,7 @@
+# Host: Motorola 88k running SVR3
+
+XM_FILE= xm-delta88.h
+XDEPFILES= 
+
+NAT_FILE= nm-m88k.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o m88k-nat.o corelow.o core-aout.o
diff --git a/gdb/config/m88k/delta88.mt b/gdb/config/m88k/delta88.mt
new file mode 100644
index 0000000..c8e669b
--- /dev/null
+++ b/gdb/config/m88k/delta88.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 88k running SVR3
+TDEPFILES= m88k-tdep.o
+TM_FILE= tm-delta88.h
diff --git a/gdb/config/m88k/delta88v4.mh b/gdb/config/m88k/delta88v4.mh
new file mode 100644
index 0000000..82be883
--- /dev/null
+++ b/gdb/config/m88k/delta88v4.mh
@@ -0,0 +1,7 @@
+# Host: Motorola 88k running SVR4
+
+XM_FILE= xm-delta88v4.h
+XDEPFILES= 
+
+NAT_FILE= nm-delta88v4.h
+NATDEPFILES= fork-child.o m88k-nat.o corelow.o core-regset.o procfs.o solib.o
diff --git a/gdb/config/m88k/delta88v4.mt b/gdb/config/m88k/delta88v4.mt
new file mode 100644
index 0000000..7797d4b
--- /dev/null
+++ b/gdb/config/m88k/delta88v4.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 88k running SVR4
+TDEPFILES= m88k-tdep.o
+TM_FILE= tm-delta88v4.h
diff --git a/gdb/config/m88k/m88k.mh b/gdb/config/m88k/m88k.mh
new file mode 100644
index 0000000..6933265
--- /dev/null
+++ b/gdb/config/m88k/m88k.mh
@@ -0,0 +1,5 @@
+# Host: Motorola 88000 running DGUX
+XDEPFILES= 
+XM_FILE= xm-dgux.h
+NAT_FILE= nm-m88k.h
+NATDEPFILES= infptrace.o inftarg.o fork-child.o m88k-nat.o
diff --git a/gdb/config/m88k/m88k.mt b/gdb/config/m88k/m88k.mt
new file mode 100644
index 0000000..ca3fab4
--- /dev/null
+++ b/gdb/config/m88k/m88k.mt
@@ -0,0 +1,3 @@
+# Target: Motorola 88k Binary Compatibility Standard
+TDEPFILES= m88k-tdep.o remote-bug.o
+TM_FILE= tm-m88k.h
diff --git a/gdb/config/m88k/nm-cxux.h b/gdb/config/m88k/nm-cxux.h
new file mode 100644
index 0000000..fec9536
--- /dev/null
+++ b/gdb/config/m88k/nm-cxux.h
@@ -0,0 +1,32 @@
+/* Native definitions for Motorola 88K running Harris CX/UX
+   Copyright 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Override the standard fetch/store definitions.  */
+
+#define FETCH_INFERIOR_REGISTERS
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+        (addr) = m88k_register_u_addr ((blockend),(regno));
+
+#define ATTACH_DETACH
+
+#define PTRACE_ATTACH 128
+#define PTRACE_DETACH 129
+
+
diff --git a/gdb/config/m88k/nm-delta88v4.h b/gdb/config/m88k/nm-delta88v4.h
new file mode 100644
index 0000000..9c1a30e
--- /dev/null
+++ b/gdb/config/m88k/nm-delta88v4.h
@@ -0,0 +1,21 @@
+/* Native machine description for Motorola Delta 88 box, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/nm-m88k.h"
+#include "nm-sysv4.h"
diff --git a/gdb/config/m88k/nm-m88k.h b/gdb/config/m88k/nm-m88k.h
new file mode 100644
index 0000000..95eca0a
--- /dev/null
+++ b/gdb/config/m88k/nm-m88k.h
@@ -0,0 +1,24 @@
+/* Native support macros for m88k, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define FETCH_INFERIOR_REGISTERS
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+        (addr) = m88k_register_u_addr ((blockend),(regno));
diff --git a/gdb/config/m88k/tm-cxux.h b/gdb/config/m88k/tm-cxux.h
new file mode 100644
index 0000000..e59c6da
--- /dev/null
+++ b/gdb/config/m88k/tm-cxux.h
@@ -0,0 +1,59 @@
+/* Target definitions for m88k running Harris CX/UX.
+   Copyright 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define HARRIS_TARGET 1
+
+#define CXUX_TARGET 1
+
+/* Type of X registers, as supplied by the OS */
+
+typedef struct {
+   long w1, w2, w3, w4;
+} X_REGISTER_RAW_TYPE;
+
+#define X_REGISTER_VIRTUAL_TYPE double
+
+#include "m88k/tm-m88k.h"
+
+#define ADD_SHARED_SYMBOL_FILES(args,have_tty)  add_shared_symbol_files ()
+
+#define CONVERT_REGISTER_ADDRESS
+
+/* Always allocate space for both, but recognize that the m88100 has no
+   FP_REGS.  */
+
+#undef ARCH_NUM_REGS
+#define ARCH_NUM_REGS (target_is_m88110 ? (GP_REGS + FP_REGS) : (GP_REGS))
+
+/* Don't need this grotesquerie.  */
+
+#undef SHIFT_INST_REGS
+
+/* Extended registers are treated as 16 bytes by Harris' OS's. 
+   We treat them as 16 bytes here for consistency's sake.  */
+
+#undef REGISTER_RAW_SIZE
+#define REGISTER_RAW_SIZE(N) ((N) < XFP_REGNUM ? 4 : 16)
+
+#undef REGISTER_BYTE
+#define REGISTER_BYTE(N) \
+  ((N) >= XFP_REGNUM \
+   ? (((GP_REGS) * REGISTER_RAW_SIZE(0)) + \
+      (((N) - XFP_REGNUM) * REGISTER_RAW_SIZE(XFP_REGNUM))) \
+   : ((N) * REGISTER_RAW_SIZE(0)))
diff --git a/gdb/config/m88k/tm-delta88.h b/gdb/config/m88k/tm-delta88.h
new file mode 100644
index 0000000..c0a9c4a
--- /dev/null
+++ b/gdb/config/m88k/tm-delta88.h
@@ -0,0 +1,26 @@
+/* Target machine description for Motorola Delta 88 box, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/tm-m88k.h"
+
+#define DELTA88
+
+#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", (name)))
+#define SIGTRAMP_FRAME_FIXUP(frame) (frame) += 0x20
+#define SIGTRAMP_SP_FIXUP(sp) (sp) = read_memory_integer((sp), 4)
diff --git a/gdb/config/m88k/tm-delta88v4.h b/gdb/config/m88k/tm-delta88v4.h
new file mode 100644
index 0000000..112a4a6
--- /dev/null
+++ b/gdb/config/m88k/tm-delta88v4.h
@@ -0,0 +1,30 @@
+/* Target machine description for Motorola Delta 88 box, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define DELTA88
+
+#include "m88k/tm-m88k.h"
+#include "tm-sysv4.h"
+
+/* If we don't define this, backtraces go on forever.  */
+#define FRAME_CHAIN_VALID(fp,fi) alternate_frame_chain_valid (fp, fi)
+
+#define IN_SIGTRAMP(pc, name) ((name) && (STREQ ("signalhandler", (name)) \
+                                          || STREQ("sigacthandler", (name))))
+#define SIGTRAMP_SP_FIXUP(sp) (sp) = read_memory_integer((sp)+0xcd8, 4)
diff --git a/gdb/config/m88k/tm-m88k.h b/gdb/config/m88k/tm-m88k.h
new file mode 100644
index 0000000..390cdef
--- /dev/null
+++ b/gdb/config/m88k/tm-m88k.h
@@ -0,0 +1,620 @@
+/* Target machine description for generic Motorola 88000, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* g++ support is not yet included.  */
+
+/* Define the bit, byte, and word ordering of the machine.  */
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* We cache information about saved registers in the frame structure,
+   to save us from having to re-scan function prologues every time
+   a register in a non-current frame is accessed.  */
+
+#define EXTRA_FRAME_INFO 	\
+	struct frame_saved_regs *fsr;	\
+	CORE_ADDR locals_pointer;	\
+	CORE_ADDR args_pointer;
+
+/* Zero the frame_saved_regs pointer when the frame is initialized,
+   so that FRAME_FIND_SAVED_REGS () will know to allocate and
+   initialize a frame_saved_regs struct the first time it is called.
+   Set the arg_pointer to -1, which is not valid; 0 and other values
+   indicate real, cached values.  */
+
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
+	init_extra_frame_info (fromleaf, fi)
+extern void init_extra_frame_info ();
+
+#define IEEE_FLOAT
+
+/* 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.  */
+
+#define SKIP_PROLOGUE(frompc)   \
+	{ (frompc) = skip_prologue (frompc); }
+extern CORE_ADDR skip_prologue ();
+
+/* The m88k kernel aligns all instructions on 4-byte boundaries.  The
+   kernel also uses the least significant two bits for its own hocus
+   pocus.  When gdb receives an address from the kernel, it needs to
+   preserve those right-most two bits, but gdb also needs to be careful
+   to realize that those two bits are not really a part of the address
+   of an instruction.  Shrug.  */
+
+extern CORE_ADDR m88k_addr_bits_remove PARAMS ((CORE_ADDR));
+#define ADDR_BITS_REMOVE(addr) m88k_addr_bits_remove (addr)
+
+/* 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) \
+  (ADDR_BITS_REMOVE (read_register (SRP_REGNUM)))
+
+/* Stack grows downward.  */
+
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
+
+/* Sequence of bytes for breakpoint instruction.  */
+
+/* instruction 0xF000D1FF is 'tb0 0,r0,511'
+   If Bit bit 0 of r0 is clear (always true),
+   initiate exception processing (trap).
+ */
+#define BREAKPOINT {0xF0, 0x00, 0xD1, 0xFF}
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.  */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* Say how long (ordinary) registers are.  This is a piece of bogosity
+   used in push_word and a few other places; REGISTER_RAW_SIZE is the
+   real way to know how big a register is.  */
+
+#define REGISTER_SIZE 4
+
+/* Number of machine registers */
+
+#define GP_REGS (38)
+#define FP_REGS (32)
+#define NUM_REGS (GP_REGS + FP_REGS)
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.  */
+
+#define REGISTER_NAMES {\
+			  "r0",\
+			  "r1",\
+			  "r2",\
+			  "r3",\
+			  "r4",\
+			  "r5",\
+			  "r6",\
+			  "r7",\
+			  "r8",\
+			  "r9",\
+			  "r10",\
+			  "r11",\
+			  "r12",\
+			  "r13",\
+			  "r14",\
+			  "r15",\
+			  "r16",\
+			  "r17",\
+			  "r18",\
+			  "r19",\
+			  "r20",\
+			  "r21",\
+			  "r22",\
+			  "r23",\
+			  "r24",\
+			  "r25",\
+			  "r26",\
+			  "r27",\
+			  "r28",\
+			  "r29",\
+			  "r30",\
+			  "r31",\
+			  "psr",\
+			  "fpsr",\
+			  "fpcr",\
+			  "sxip",\
+			  "snip",\
+			  "sfip",\
+			  "x0",\
+			  "x1",\
+			  "x2",\
+			  "x3",\
+			  "x4",\
+			  "x5",\
+			  "x6",\
+			  "x7",\
+			  "x8",\
+			  "x9",\
+			  "x10",\
+			  "x11",\
+			  "x12",\
+			  "x13",\
+			  "x14",\
+			  "x15",\
+			  "x16",\
+			  "x17",\
+			  "x18",\
+			  "x19",\
+			  "x20",\
+			  "x21",\
+			  "x22",\
+			  "x23",\
+			  "x24",\
+			  "x25",\
+			  "x26",\
+			  "x27",\
+			  "x28",\
+			  "x29",\
+			  "x30",\
+			  "x31",\
+			  "vbr",\
+			  "dmt0",\
+			  "dmd0",\
+			  "dma0",\
+			  "dmt1",\
+			  "dmd1",\
+			  "dma1",\
+			  "dmt2",\
+			  "dmd2",\
+			  "dma2",\
+			  "sr0",\
+			  "sr1",\
+			  "sr2",\
+			  "sr3",\
+			  "fpecr",\
+			  "fphs1",\
+			  "fpls1",\
+			  "fphs2",\
+			  "fpls2",\
+			  "fppt",\
+			  "fprh",\
+			  "fprl",\
+			  "fpit",\
+			  "fpsr",\
+			  "fpcr",\
+		      }
+
+
+/* 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 R0_REGNUM 0		/* Contains the constant zero */
+#define SRP_REGNUM 1		/* Contains subroutine return pointer */
+#define RV_REGNUM 2		/* Contains simple return values */
+#define SRA_REGNUM 12		/* Contains address of struct return values */
+#define SP_REGNUM 31		/* Contains address of top of stack */
+
+/* Instruction pointer notes...
+
+   On the m88100:
+
+   * cr04 = sxip.  On exception, contains the excepting pc (probably).
+   On rte, is ignored.
+
+   * cr05 = snip.  On exception, contains the NPC (next pc).  On rte,
+   pc is loaded from here.
+
+   * cr06 = sfip.  On exception, contains the NNPC (next next pc).  On
+   rte, the NPC is loaded from here.
+
+   * lower two bits of each are flag bits.  Bit 1 is V means address
+   is valid.  If address is not valid, bit 0 is ignored.  Otherwise,
+   bit 0 is E and asks for an exception to be taken if this
+   instruction is executed.
+
+   On the m88110:
+
+   * cr04 = exip.  On exception, contains the address of the excepting
+   pc (always).  On rte, pc is loaded from here.  Bit 0, aka the D
+   bit, is a flag saying that the offending instruction was in a
+   branch delay slot.  If set, then cr05 contains the NPC.
+
+   * cr05 = enip.  On exception, if the instruction pointed to by cr04
+   was in a delay slot as indicated by the bit 0 of cr04, aka the D
+   bit, the cr05 contains the NPC.  Otherwise ignored.
+
+   * cr06 is invalid  */
+
+/* Note that the Harris Unix kernels emulate the m88100's behavior on
+   the m88110.  */
+
+#define SXIP_REGNUM 35		/* On m88100, Contains Shadow Execute
+				   Instruction Pointer.  */
+#define SNIP_REGNUM 36		/* On m88100, Contains Shadow Next
+				   Instruction Pointer.  */
+#define SFIP_REGNUM 37		/* On m88100, Contains Shadow Fetched
+				   Intruction pointer.  */
+
+#define EXIP_REGNUM 35		/* On m88110, Contains Exception
+				   Executing Instruction Pointer.  */
+#define ENIP_REGNUM 36		/* On m88110, Contains the Exception
+				   Next Instruction Pointer.  */
+
+#define PC_REGNUM SXIP_REGNUM	/* Program Counter */
+#define NPC_REGNUM SNIP_REGNUM	/* Next Program Counter */
+#define NNPC_REGNUM SFIP_REGNUM /* Next Next Program Counter */
+
+#define PSR_REGNUM 32           /* Processor Status Register */
+#define FPSR_REGNUM 33		/* Floating Point Status Register */
+#define FPCR_REGNUM 34		/* Floating Point Control Register */
+#define XFP_REGNUM 38		/* First Extended Float Register */
+#define X0_REGNUM XFP_REGNUM	/* Which also contains the constant zero */
+
+/* This is rather a confusing lie.  Our m88k port using a stack pointer value
+   for the frame address.  Hence, the frame address and the frame pointer are
+   only indirectly related.  The value of this macro is the register number
+   fetched by the machine "independent" portions of gdb when they want to know
+   about a frame address.  Thus, we lie here and claim that FP_REGNUM is
+   SP_REGNUM.  */
+#define FP_REGNUM SP_REGNUM	/* Reg fetched to locate frame when pgm stops */
+#define ACTUAL_FP_REGNUM 30
+
+/* PSR status bit definitions.  */
+
+#define PSR_MODE		0x80000000
+#define PSR_BYTE_ORDER		0x40000000
+#define PSR_SERIAL_MODE		0x20000000
+#define PSR_CARRY		0x10000000
+#define PSR_SFU_DISABLE		0x000003f0
+#define PSR_SFU1_DISABLE	0x00000008
+#define PSR_MXM			0x00000004
+#define PSR_IND			0x00000002
+#define PSR_SFRZ		0x00000001
+
+
+
+/* The following two comments come from the days prior to the m88110
+   port.  The m88110 handles the instruction pointers differently.  I
+   do not know what any m88110 kernels do as the m88110 port I'm
+   working with is for an embedded system.  rich@cygnus.com
+   13-sept-93.  */
+
+/* BCS requires that the SXIP_REGNUM (or PC_REGNUM) contain the
+   address of the next instr to be executed when a breakpoint occurs.
+   Because the kernel gets the next instr (SNIP_REGNUM), the instr in
+   SNIP needs to be put back into SFIP, and the instr in SXIP should
+   be shifted to SNIP */
+
+/* Are you sitting down?  It turns out that the 88K BCS (binary
+   compatibility standard) folks originally felt that the debugger
+   should be responsible for backing up the IPs, not the kernel (as is
+   usually done).  Well, they have reversed their decision, and in
+   future releases our kernel will be handling the backing up of the
+   IPs.  So, eventually, we won't need to do the SHIFT_INST_REGS
+   stuff.  But, for now, since there are 88K systems out there that do
+   need the debugger to do the IP shifting, and since there will be
+   systems where the kernel does the shifting, the code is a little
+   more complex than perhaps it needs to be (we still go inside
+   SHIFT_INST_REGS, and if the shifting hasn't occurred then gdb goes
+   ahead and shifts).  */
+
+extern int target_is_m88110;
+#define SHIFT_INST_REGS() \
+if (!target_is_m88110) \
+{ \
+    CORE_ADDR pc = read_register (PC_REGNUM); \
+    CORE_ADDR npc = read_register (NPC_REGNUM); \
+    if (pc != npc) \
+    { \
+	write_register (NNPC_REGNUM, npc); \
+	write_register (NPC_REGNUM, pc); \
+    } \
+}
+
+    /* Storing the following registers is a no-op. */
+#define CANNOT_STORE_REGISTER(regno)	(((regno) == R0_REGNUM) \
+					 || ((regno) == X0_REGNUM))
+
+  /* Number of bytes of storage in the actual machine representation
+     for register N.  On the m88k,  the general purpose registers are 4
+     bytes and the 88110 extended registers are 10 bytes. */
+
+#define REGISTER_RAW_SIZE(N) ((N) < XFP_REGNUM ? 4 : 10)
+
+  /* Total amount of space needed to store our copies of the machine's
+     register state, the array `registers'.  */
+
+#define REGISTER_BYTES ((GP_REGS * REGISTER_RAW_SIZE(0)) \
+			+ (FP_REGS * REGISTER_RAW_SIZE(XFP_REGNUM)))
+
+  /* Index within `registers' of the first byte of the space for
+     register N.  */
+
+#define REGISTER_BYTE(N) (((N) * REGISTER_RAW_SIZE(0)) \
+			  + ((N) >= XFP_REGNUM \
+			     ? (((N) - XFP_REGNUM) \
+				* REGISTER_RAW_SIZE(XFP_REGNUM)) \
+			     : 0))
+
+  /* Number of bytes of storage in the program's representation for
+     register N.  On the m88k, all registers are 4 bytes excepting the
+     m88110 extended registers which are 8 byte doubles. */
+
+#define REGISTER_VIRTUAL_SIZE(N) ((N) < XFP_REGNUM ? 4 : 8)
+
+  /* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE (REGISTER_RAW_SIZE(XFP_REGNUM))
+
+  /* Largest value REGISTER_VIRTUAL_SIZE can have.
+     Are FPS1, FPS2, FPR "virtual" regisers? */
+
+#define MAX_REGISTER_VIRTUAL_SIZE (REGISTER_RAW_SIZE(XFP_REGNUM))
+
+  /* Nonzero if register N requires conversion
+     from raw format to virtual format.  */
+
+#define REGISTER_CONVERTIBLE(N) ((N) >= XFP_REGNUM)
+
+#include "floatformat.h"
+
+/* Convert data from raw format for register REGNUM in buffer FROM
+   to virtual format with type TYPE in buffer TO.  */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
+{ \
+  double val; \
+  floatformat_to_double (&floatformat_m88110_ext, (FROM), &val); \
+  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
+}
+
+/* Convert data from virtual format with type TYPE in buffer FROM
+   to raw format for register REGNUM in buffer TO.  */
+
+#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO)	\
+{ \
+  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
+  floatformat_from_double (&floatformat_m88110_ext, &val, (TO)); \
+}
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N) \
+((N) >= XFP_REGNUM \
+ ? builtin_type_double \
+ : ((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM \
+    ? lookup_pointer_type (builtin_type_void) : builtin_type_int))
+
+/* The 88k call/return conventions call for "small" values to be returned
+   into consecutive registers starting from r2.  */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  memcpy ((VALBUF), &(((char *)REGBUF)[REGISTER_BYTE(RV_REGNUM)]), TYPE_LENGTH (TYPE))
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  write_register_bytes (2*REGISTER_RAW_SIZE(0), (VALBUF), TYPE_LENGTH (TYPE))
+
+/* In COFF, if PCC says a parameter is a short or a char, do not
+   change it to int (it seems the convention is to change it). */
+
+#define BELIEVE_PCC_PROMOTION 1
+
+/* 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.
+
+   However, if FRAME_CHAIN_VALID returns zero,
+   it means the given frame is the outermost one and has no caller.  */
+
+extern CORE_ADDR frame_chain ();
+extern int frame_chain_valid ();
+extern int frameless_function_invocation ();
+
+#define FRAME_CHAIN(thisframe) \
+	frame_chain (thisframe)
+
+#define	FRAMELESS_FUNCTION_INVOCATION(frame, fromleaf)	\
+	fromleaf = frameless_function_invocation (frame)
+
+/* Define other aspects of the stack frame.  */
+
+#define FRAME_SAVED_PC(FRAME)	\
+	frame_saved_pc (FRAME)
+extern CORE_ADDR frame_saved_pc ();
+
+#define FRAME_ARGS_ADDRESS(fi)	\
+	frame_args_address (fi)
+extern CORE_ADDR frame_args_address ();
+
+#define FRAME_LOCALS_ADDRESS(fi) \
+	frame_locals_address (fi)
+extern CORE_ADDR frame_locals_address ();
+
+/* Return number of args passed to a frame.
+   Can return -1, meaning no way to tell.  */
+
+#define FRAME_NUM_ARGS(numargs, fi)  ((numargs) = -1)
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 0
+
+/* 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.  */
+
+/* On the 88k, parameter registers get stored into the so called "homing"
+   area.  This *always* happens when you compiled with GCC and use -g.
+   Also, (with GCC and -g) the saving of the parameter register values
+   always happens right within the function prologue code, so these register
+   values can generally be relied upon to be already copied into their
+   respective homing slots by the time you will normally try to look at
+   them (we hope).
+
+   Note that homing area stack slots are always at *positive* offsets from
+   the frame pointer.  Thus, the homing area stack slots for the parameter
+   registers (passed values) for a given function are actually part of the
+   frame area of the caller.  This is unusual, but it should not present
+   any special problems for GDB.
+
+   Note also that on the 88k, we are only interested in finding the
+   registers that might have been saved in memory.  This is a subset of
+   the whole set of registers because the standard calling sequence allows
+   the called routine to clobber many registers.
+
+   We could manage to locate values for all of the so called "preserved"
+   registers (some of which may get saved within any particular frame) but
+   that would require decoding all of the tdesc information.  That would be
+   nice information for GDB to have, but it is not strictly manditory if we
+   can live without the ability to look at values within (or backup to)
+   previous frames.
+*/
+
+struct frame_saved_regs;
+struct frame_info;
+
+void frame_find_saved_regs PARAMS((struct frame_info *fi,
+				   struct frame_saved_regs *fsr));
+
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+        frame_find_saved_regs (frame_info, &frame_saved_regs)
+
+
+#define POP_FRAME pop_frame ()
+extern void pop_frame ();
+
+/* Call function stuff contributed by Kevin Buettner of Motorola.  */
+
+#define CALL_DUMMY_LOCATION AFTER_TEXT_END
+
+extern void m88k_push_dummy_frame();
+#define PUSH_DUMMY_FRAME	m88k_push_dummy_frame()
+
+#define CALL_DUMMY { 				\
+0x67ff00c0,	/*   0:   subu	#sp,#sp,0xc0 */ \
+0x243f0004,	/*   4:   st	#r1,#sp,0x4 */ \
+0x245f0008,	/*   8:   st	#r2,#sp,0x8 */ \
+0x247f000c,	/*   c:   st	#r3,#sp,0xc */ \
+0x249f0010,	/*  10:   st	#r4,#sp,0x10 */ \
+0x24bf0014,	/*  14:   st	#r5,#sp,0x14 */ \
+0x24df0018,	/*  18:   st	#r6,#sp,0x18 */ \
+0x24ff001c,	/*  1c:   st	#r7,#sp,0x1c */ \
+0x251f0020,	/*  20:   st	#r8,#sp,0x20 */ \
+0x253f0024,	/*  24:   st	#r9,#sp,0x24 */ \
+0x255f0028,	/*  28:   st	#r10,#sp,0x28 */ \
+0x257f002c,	/*  2c:   st	#r11,#sp,0x2c */ \
+0x259f0030,	/*  30:   st	#r12,#sp,0x30 */ \
+0x25bf0034,	/*  34:   st	#r13,#sp,0x34 */ \
+0x25df0038,	/*  38:   st	#r14,#sp,0x38 */ \
+0x25ff003c,	/*  3c:   st	#r15,#sp,0x3c */ \
+0x261f0040,	/*  40:   st	#r16,#sp,0x40 */ \
+0x263f0044,	/*  44:   st	#r17,#sp,0x44 */ \
+0x265f0048,	/*  48:   st	#r18,#sp,0x48 */ \
+0x267f004c,	/*  4c:   st	#r19,#sp,0x4c */ \
+0x269f0050,	/*  50:   st	#r20,#sp,0x50 */ \
+0x26bf0054,	/*  54:   st	#r21,#sp,0x54 */ \
+0x26df0058,	/*  58:   st	#r22,#sp,0x58 */ \
+0x26ff005c,	/*  5c:   st	#r23,#sp,0x5c */ \
+0x271f0060,	/*  60:   st	#r24,#sp,0x60 */ \
+0x273f0064,	/*  64:   st	#r25,#sp,0x64 */ \
+0x275f0068,	/*  68:   st	#r26,#sp,0x68 */ \
+0x277f006c,	/*  6c:   st	#r27,#sp,0x6c */ \
+0x279f0070,	/*  70:   st	#r28,#sp,0x70 */ \
+0x27bf0074,	/*  74:   st	#r29,#sp,0x74 */ \
+0x27df0078,	/*  78:   st	#r30,#sp,0x78 */ \
+0x63df0000,	/*  7c:   addu	#r30,#sp,0x0 */ \
+0x145f0000,	/*  80:   ld	#r2,#sp,0x0 */ \
+0x147f0004,	/*  84:   ld	#r3,#sp,0x4 */ \
+0x149f0008,	/*  88:   ld	#r4,#sp,0x8 */ \
+0x14bf000c,	/*  8c:   ld	#r5,#sp,0xc */ \
+0x14df0010,	/*  90:   ld	#r6,#sp,0x10 */ \
+0x14ff0014,	/*  94:   ld	#r7,#sp,0x14 */ \
+0x151f0018,	/*  98:   ld	#r8,#sp,0x18 */ \
+0x153f001c,	/*  9c:   ld	#r9,#sp,0x1c */ \
+0x5c200000,	/*  a0:   or.u	#r1,#r0,0x0 */ \
+0x58210000,	/*  a4:   or	#r1,#r1,0x0 */ \
+0xf400c801,	/*  a8:   jsr	#r1 */ \
+0xf000d1ff	/*  ac:   tb0	0x0,#r0,0x1ff */ \
+}
+
+#define CALL_DUMMY_START_OFFSET 0x80
+#define CALL_DUMMY_LENGTH 0xb0
+
+/* FIXME: byteswapping.  */
+#define FIX_CALL_DUMMY(dummy, pc, fun, nargs, args, type, gcc_p)	\
+{ 									\
+  *(unsigned long *)((char *) (dummy) + 0xa0) |=			\
+	(((unsigned long) (fun)) >> 16);				\
+  *(unsigned long *)((char *) (dummy) + 0xa4) |=			\
+	(((unsigned long) (fun)) & 0xffff);				\
+  pc = text_end;							\
+}
+
+/* Stack must be aligned on 64-bit boundaries when synthesizing
+   function calls. */
+
+#define STACK_ALIGN(addr) (((addr) + 7) & -8)
+
+#define STORE_STRUCT_RETURN(addr, sp) \
+    write_register (SRA_REGNUM, (addr))
+
+#define NEED_TEXT_START_END 1
+
+/* According to the MC88100 RISC Microprocessor User's Manual, section
+   6.4.3.1.2:
+
+   	... can be made to return to a particular instruction by placing a
+	valid instruction address in the SNIP and the next sequential
+	instruction address in the SFIP (with V bits set and E bits clear).
+	The rte resumes execution at the instruction pointed to by the 
+	SNIP, then the SFIP.
+
+   The E bit is the least significant bit (bit 0).  The V (valid) bit is
+   bit 1.  This is why we logical or 2 into the values we are writing
+   below.  It turns out that SXIP plays no role when returning from an
+   exception so nothing special has to be done with it.  We could even
+   (presumably) give it a totally bogus value.
+
+   -- Kevin Buettner
+*/
+ 
+#define TARGET_WRITE_PC(val, pid) { \
+  write_register_pid(SXIP_REGNUM, (long) val, pid); \
+  write_register_pid(SNIP_REGNUM, (long) val | 2, pid); \
+  write_register_pid(SFIP_REGNUM, ((long) val | 2) + 4, pid); \
+}
diff --git a/gdb/config/m88k/xm-cxux.h b/gdb/config/m88k/xm-cxux.h
new file mode 100644
index 0000000..582c613
--- /dev/null
+++ b/gdb/config/m88k/xm-cxux.h
@@ -0,0 +1,66 @@
+/* Host-machine dependent parameters for Motorola 88000, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/xm-m88k.h"
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#if !defined (USG)
+#define USG 1
+#endif
+
+#include <sys/param.h>
+
+#define x_foff _x_x._x_offset
+#define x_fname _x_name
+#define USER ptrace_user
+/*
+#define _BSD_WAIT_FLAVOR
+*/
+
+#define HAVE_TERMIO
+
+#ifndef USIZE
+#define USIZE 2048
+#ifndef UPAGES
+#define UPAGES USIZE
+#endif
+#endif
+#define NBPG NBPC
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+/* Since registers r0 through r31 are stored directly in the struct ptrace_user,
+   (for m88k BCS)
+   the ptrace_user offsets are sufficient and KERNEL_U_ADDRESS can be 0 */
+
+#define KERNEL_U_ADDR 0
+
+/* The CX/UX C compiler doesn't permit complex expressions as array bounds. */
+#define STRICT_ANSI_BOUNDS
+
+#define CORE_REGISTER_ADDR(regno, reg_ptr) \
+   m88k_harris_core_register_addr(regno, reg_ptr)
+
diff --git a/gdb/config/m88k/xm-delta88.h b/gdb/config/m88k/xm-delta88.h
new file mode 100644
index 0000000..2166947
--- /dev/null
+++ b/gdb/config/m88k/xm-delta88.h
@@ -0,0 +1,45 @@
+/* Host machine description for Motorola Delta 88 system, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/xm-m88k.h"
+
+#if !defined (USG)
+#define USG 1
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+
+#define HAVE_TERMIO
+
+/*#define USIZE 2048*/
+/*#define NBPG NBPC*/
+/* Might be defined in <sys/param.h>.  I suspect this define was a relic
+   from before when BFD did core files.  */
+/* #define UPAGES USIZE */
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+/* Since registers r0 through r31 are stored directly in the struct ptrace_user,
+   (for m88k BCS)
+   the ptrace_user offsets are sufficient and KERNEL_U_ADDRESS can be 0 */
+
+#define KERNEL_U_ADDR 0
diff --git a/gdb/config/m88k/xm-delta88v4.h b/gdb/config/m88k/xm-delta88v4.h
new file mode 100644
index 0000000..55c9e2d
--- /dev/null
+++ b/gdb/config/m88k/xm-delta88v4.h
@@ -0,0 +1,22 @@
+/* Host machine description for Motorola Delta 88 box, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/xm-m88k.h"
+
+#include "xm-sysv4.h"
diff --git a/gdb/config/m88k/xm-dgux.h b/gdb/config/m88k/xm-dgux.h
new file mode 100644
index 0000000..b3608e7
--- /dev/null
+++ b/gdb/config/m88k/xm-dgux.h
@@ -0,0 +1,58 @@
+/* Host-machine dependent parameters for Motorola 88000, for GDB.
+   Copyright 1986, 1987, 1988, 1989, 1990, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "m88k/xm-m88k.h"
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#if !defined (USG)
+#define USG 1
+#endif
+
+#include <sys/param.h>
+
+#ifdef __GNUC__
+#define memcpy __builtin_memcpy
+/* gcc doesn't have this, at least not gcc 1.92.  */
+/* #define memset __builtin_memset */
+#define strcmp __builtin_strcmp
+#endif
+
+#define x_foff _x_x._x_offset
+#define x_fname _x_name
+#define USER ptrace_user
+#define _BSD_WAIT_FLAVOR
+
+#define HAVE_TERMIO
+
+#ifndef USIZE
+#define USIZE 2048
+#endif
+#define NBPG NBPC
+#define UPAGES USIZE
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+/* Since registers r0 through r31 are stored directly in the struct ptrace_user,
+   (for m88k BCS)
+   the ptrace_user offsets are sufficient and KERNEL_U_ADDRESS can be 0 */
+
+#define KERNEL_U_ADDR 0
diff --git a/gdb/config/m88k/xm-m88k.h b/gdb/config/m88k/xm-m88k.h
new file mode 100644
index 0000000..35620a0
--- /dev/null
+++ b/gdb/config/m88k/xm-m88k.h
@@ -0,0 +1,20 @@
+/* Host-machine dependent parameters for Motorola 88000, for GDB.
+   Copyright 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN