Johns release

1 files changed, 172 insertions, 0 deletions

diff --git a/gdb/tm-news.h b/gdb/tm-news.h
new file mode 100644
index 0000000..ff50dbf
--- /dev/null
+++ b/gdb/tm-news.h
@@ -0,0 +1,172 @@
+/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
+   Copyright (C) 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.  */
+
+/* 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 this if the C compiler puts an underscore at the front
+   of external names before giving them to the linker.  */
+
+#define NAMES_HAVE_UNDERSCORE
+
+/* Symbols on this machine are in DBX format. */
+#define READ_DBX_FORMAT
+
+/* 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; }
+
+/* Things needed for making the inferior call functions.  */
+#define PUSH_DUMMY_FRAME \
+{ register CORE_ADDR sp = read_register (SP_REGNUM);			\
+  register int regnum;							\
+  char raw_buffer[12];							\
+  sp = push_word (sp, read_register (PC_REGNUM));			\
+  sp = push_word (sp, read_register (FP_REGNUM));			\
+  write_register (FP_REGNUM, sp);					\
+  for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--)		\
+    { read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12);	\
+      sp = push_bytes (sp, raw_buffer, 12); }				\
+  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;						\
+  char raw_buffer[12];							\
+  fi = get_frame_info (frame);					 	\
+  fp = fi->frame;						 	\
+  get_frame_saved_regs (fi, &fsr);					\
+  for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--)		\
+    if (fsr.regs[regnum])						\
+      { read_memory (fsr.regs[regnum], raw_buffer, 12);			\
+        write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); }\
+  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
+     fmove.m #<f0-f7>,-(sp)
+     movem.l 0xfffc,-(sp)     ;; no save a6(fp) and a7(sp)
+     clr.w -(sp)
+     move.w 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.  *../
+     jbsr (#32323232)
+     add.l #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 {0xf227e0ff, 0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, 0x4e4f4e71}
+
+#define CALL_DUMMY_LENGTH 28
+
+#define CALL_DUMMY_START_OFFSET 12
+
+/* 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, args, type, gcc_p)     \
+{ *(int *)((char *) dummyname + 20) = nargs * 4;  \
+  *(int *)((char *) dummyname + 14) = fun; }
+
+#define HAVE_68881
+
+#include "tm-68k.h"