Johns release

1 files changed, 108 insertions, 0 deletions

diff --git a/gdb/tm-3b1.h b/gdb/tm-3b1.h
new file mode 100644
index 0000000..65143a9
--- /dev/null
+++ b/gdb/tm-3b1.h
@@ -0,0 +1,108 @@
+/* Parameters for targeting to a 3b1.
+   Copyright (C) 1986, 1987, 1989 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 BREAKPOINT { 0x4e, 0x41 }
+/* Define this if the C compiler puts an underscore at the front
+   of external names before giving them to the linker.  */
+
+#define NAMES_HAVE_UNDERSCORE
+
+/* Debugger information will be in COFF format.  */
+
+#define COFF_FORMAT
+#define COFF_NO_LONG_FILE_NAMES
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0x300000
+
+
+/* Things needed for making the inferior call functions.  */
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME \
+{ register CORE_ADDR sp = read_register (SP_REGNUM);\
+  register int regnum;				    \
+  sp = push_word (sp, read_register (PC_REGNUM));   \
+  sp = push_word (sp, read_register (FP_REGNUM));   \
+  write_register (FP_REGNUM, sp);		    \
+  for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--)  \
+    sp = push_word (sp, read_register (regnum));    \
+  sp = push_word (sp, read_register (PS_REGNUM));   \
+  write_register (SP_REGNUM, sp);  }
+
+/* Discard from the stack the innermost frame, restoring all registers.  */
+
+#define POP_FRAME  \
+{ register FRAME frame = get_current_frame ();			 \
+  register CORE_ADDR fp;					 \
+  register int regnum;						 \
+  struct frame_saved_regs fsr;					 \
+  struct frame_info *fi;						 \
+  fi = get_frame_info (frame);					 \
+  fp = fi->frame;						 \
+  get_frame_saved_regs (fi, &fsr);				 \
+  for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--)		 \
+    if (fsr.regs[regnum])					 \
+      write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \
+  if (fsr.regs[PS_REGNUM])					 \
+    write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4)); \
+  write_register (FP_REGNUM, read_memory_integer (fp, 4));	 \
+  write_register (PC_REGNUM, read_memory_integer (fp + 4, 4));   \
+  write_register (SP_REGNUM, fp + 8);				 \
+  flush_cached_frames ();					 \
+  set_current_frame ( create_new_frame (read_register (FP_REGNUM),\
+					read_pc ())); }
+
+/* This sequence of words is the instructions
+     moveml 0xfffc,-(sp)
+     clrw -(sp)
+     movew ccr,-(sp)
+     /..* 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 @#32323232
+     addl #69696969,sp
+     bpt
+     nop
+Note this is 24 bytes.
+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.  */
+
+#define CALL_DUMMY {0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, 0x4e4f4e71}
+
+#define CALL_DUMMY_LENGTH 24
+
+#define CALL_DUMMY_START_OFFSET 8
+
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type)     \
+{ *(int *)((char *) dummyname + 16) = nargs * 4;  \
+  *(int *)((char *) dummyname + 10) = fun; }
+
+#include "tm-68k.h"