Initial creation of sourceware repository

1 files changed, 0 insertions, 453 deletions

diff --git a/gdb/z8k-tdep.c b/gdb/z8k-tdep.c
deleted file mode 100644
index 0b5c1c2..0000000
--- a/gdb/z8k-tdep.c
+++ /dev/null
@@ -1,453 +0,0 @@
-/* Target-machine dependent code for Zilog Z8000, for GDB.
-   Copyright (C) 1992, 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.  */
-
-/*
- Contributed by Steve Chamberlain
-                sac@cygnus.com
- */
-
-#include "defs.h"
-#include "frame.h"
-#include "obstack.h"
-#include "symtab.h"
-#include "gdbcmd.h"
-#include "gdbtypes.h"
-#include "dis-asm.h"
-#include "gdbcore.h"
-
-
-/* Return the saved PC from this frame.
-
-   If the frame has a memory copy of SRP_REGNUM, use that.  If not,
-   just use the register SRP_REGNUM itself.  */
-
-CORE_ADDR
-frame_saved_pc (frame)
-     struct frame_info *frame;
-{
-  return read_memory_pointer (frame->frame + (BIG ? 4 : 2));
-}
-
-#define IS_PUSHL(x) (BIG ? ((x & 0xfff0) == 0x91e0):((x & 0xfff0) == 0x91F0))
-#define IS_PUSHW(x) (BIG ? ((x & 0xfff0) == 0x93e0):((x & 0xfff0)==0x93f0))
-#define IS_MOVE_FP(x) (BIG ? x == 0xa1ea : x == 0xa1fa)
-#define IS_MOV_SP_FP(x) (BIG ? x == 0x94ea : x == 0x0d76)
-#define IS_SUB2_SP(x) (x==0x1b87)
-#define IS_MOVK_R5(x) (x==0x7905)
-#define IS_SUB_SP(x) ((x & 0xffff) == 0x020f)
-#define IS_PUSH_FP(x) (BIG ? (x == 0x93ea) : (x == 0x93fa))
-
-/* work out how much local space is on the stack and
-   return the pc pointing to the first push */
-
-static CORE_ADDR
-skip_adjust (pc, size)
-     CORE_ADDR pc;
-     int *size;
-{
-  *size = 0;
-
-  if (IS_PUSH_FP (read_memory_short (pc))
-      && IS_MOV_SP_FP (read_memory_short (pc + 2)))
-    {
-      /* This is a function with an explict frame pointer */
-      pc += 4;
-      *size += 2;		/* remember the frame pointer */
-    }
-
-  /* remember any stack adjustment */
-  if (IS_SUB_SP (read_memory_short (pc)))
-    {
-      *size += read_memory_short (pc + 2);
-      pc += 4;
-    }
-  return pc;
-}
-
-static CORE_ADDR examine_frame PARAMS ((CORE_ADDR, CORE_ADDR *regs, CORE_ADDR));
-static CORE_ADDR
-examine_frame (pc, regs, sp)
-     CORE_ADDR pc;
-     CORE_ADDR *regs;
-     CORE_ADDR sp;
-{
-  int w = read_memory_short (pc);
-  int offset = 0;
-  int regno;
-
-  for (regno = 0; regno < NUM_REGS; regno++)
-    regs[regno] = 0;
-
-  while (IS_PUSHW (w) || IS_PUSHL (w))
-    {
-      /* work out which register is being pushed to where */
-      if (IS_PUSHL (w))
-	{
-	  regs[w & 0xf] = offset;
-	  regs[(w & 0xf) + 1] = offset + 2;
-	  offset += 4;
-	}
-      else
-	{
-	  regs[w & 0xf] = offset;
-	  offset += 2;
-	}
-      pc += 2;
-      w = read_memory_short (pc);
-    }
-
-  if (IS_MOVE_FP (w))
-    {
-      /* We know the fp */
-
-    }
-  else if (IS_SUB_SP (w))
-    {
-      /* Subtracting a value from the sp, so were in a function
-       which needs stack space for locals, but has no fp.  We fake up
-       the values as if we had an fp */
-      regs[FP_REGNUM] = sp;
-    }
-  else
-    {
-      /* This one didn't have an fp, we'll fake it up */
-      regs[SP_REGNUM] = sp;
-    }
-  /* stack pointer contains address of next frame */
-  /*  regs[fp_regnum()] = fp;*/
-  regs[SP_REGNUM] = sp;
-  return pc;
-}
-
-CORE_ADDR
-z8k_skip_prologue (start_pc)
-     CORE_ADDR start_pc;
-{
-  CORE_ADDR dummy[NUM_REGS];
-
-  return examine_frame (start_pc, dummy, 0);
-}
-
-CORE_ADDR
-z8k_addr_bits_remove (addr)
-     CORE_ADDR addr;
-{
-  return (addr & PTR_MASK);
-}
-
-int
-read_memory_pointer (x)
-     CORE_ADDR x;
-{
-  return read_memory_integer (ADDR_BITS_REMOVE (x), BIG ? 4 : 2);
-}
-
-CORE_ADDR
-frame_chain (thisframe)
-     struct frame_info *thisframe;
-{
-  if (thisframe->prev == 0)
-    {
-      /* This is the top of the stack, let's get the sp for real */
-    }
-  if (!inside_entry_file (thisframe->pc))
-    {
-      return read_memory_pointer (thisframe->frame);
-    }
-  return 0;
-}
-
-void
-init_frame_pc ()
-{
-  abort ();
-}
-
-/* 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.  */
-
-void
-z8k_frame_init_saved_regs (frame_info)
-     struct frame_info *frame_info;
-{
-  CORE_ADDR pc;
-  int w;
-
-  frame_saved_regs_zalloc (frame_info);
-  pc = get_pc_function_start (frame_info->pc);
-
-  /* wander down the instruction stream */
-  examine_frame (pc, frame_info->saved_regs, frame_info->frame);
-
-}
-
-void
-z8k_push_dummy_frame ()
-{
-  abort ();
-}
-
-int
-gdb_print_insn_z8k (memaddr, info)
-     bfd_vma memaddr;
-     disassemble_info *info;
-{
-  if (BIG)
-    return print_insn_z8001 (memaddr, info);
-  else
-    return print_insn_z8002 (memaddr, info);
-}
-
-/* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or
-   is not the address of a valid instruction, the address of the next
-   instruction beyond ADDR otherwise.  *PWORD1 receives the first word
-   of the instruction.*/
-
-CORE_ADDR
-NEXT_PROLOGUE_INSN (addr, lim, pword1)
-     CORE_ADDR addr;
-     CORE_ADDR lim;
-     short *pword1;
-{
-  char buf[2];
-  if (addr < lim + 8)
-    {
-      read_memory (addr, buf, 2);
-      *pword1 = extract_signed_integer (buf, 2);
-
-      return addr + 2;
-    }
-  return 0;
-}
-
-#if 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.
-
-   We cache the result of doing this in the frame_cache_obstack, since
-   it is fairly expensive.  */
-
-void
-frame_find_saved_regs (fip, fsrp)
-     struct frame_info *fip;
-     struct frame_saved_regs *fsrp;
-{
-  int locals;
-  CORE_ADDR pc;
-  CORE_ADDR adr;
-  int i;
-
-  memset (fsrp, 0, sizeof *fsrp);
-
-  pc = skip_adjust (get_pc_function_start (fip->pc), &locals);
-
-  {
-    adr = FRAME_FP (fip) - locals;
-    for (i = 0; i < 8; i++)
-      {
-	int word = read_memory_short (pc);
-
-	pc += 2;
-	if (IS_PUSHL (word))
-	  {
-	    fsrp->regs[word & 0xf] = adr;
-	    fsrp->regs[(word & 0xf) + 1] = adr - 2;
-	    adr -= 4;
-	  }
-	else if (IS_PUSHW (word))
-	  {
-	    fsrp->regs[word & 0xf] = adr;
-	    adr -= 2;
-	  }
-	else
-	  break;
-      }
-
-  }
-
-  fsrp->regs[PC_REGNUM] = fip->frame + 4;
-  fsrp->regs[FP_REGNUM] = fip->frame;
-
-}
-#endif
-
-int
-saved_pc_after_call ()
-{
-  return ADDR_BITS_REMOVE 
-    (read_memory_integer (read_register (SP_REGNUM), PTR_SIZE));
-}
-
-
-void
-extract_return_value (type, regbuf, valbuf)
-     struct type *type;
-     char *regbuf;
-     char *valbuf;
-{
-  int b;
-  int len = TYPE_LENGTH (type);
-
-  for (b = 0; b < len; b += 2)
-    {
-      int todo = len - b;
-
-      if (todo > 2)
-	todo = 2;
-      memcpy (valbuf + b, regbuf + b, todo);
-    }
-}
-
-void
-write_return_value (type, valbuf)
-     struct type *type;
-     char *valbuf;
-{
-  int reg;
-  int len;
-
-  for (len = 0; len < TYPE_LENGTH (type); len += 2)
-    write_register_bytes (REGISTER_BYTE (len / 2  + 2), valbuf + len, 2);
-}
-
-void
-store_struct_return (addr, sp)
-     CORE_ADDR addr;
-     CORE_ADDR sp;
-{
-  write_register (2, addr);
-}
-
-
-void
-print_register_hook (regno)
-     int regno;
-{
-  if ((regno & 1) == 0 && regno < 16)
-    {
-      unsigned short l[2];
-
-      read_relative_register_raw_bytes (regno, (char *) (l + 0));
-      read_relative_register_raw_bytes (regno + 1, (char *) (l + 1));
-      printf_unfiltered ("\t");
-      printf_unfiltered ("%04x%04x", l[0], l[1]);
-    }
-
-  if ((regno & 3) == 0 && regno < 16)
-    {
-      unsigned short l[4];
-
-      read_relative_register_raw_bytes (regno, (char *) (l + 0));
-      read_relative_register_raw_bytes (regno + 1, (char *) (l + 1));
-      read_relative_register_raw_bytes (regno + 2, (char *) (l + 2));
-      read_relative_register_raw_bytes (regno + 3, (char *) (l + 3));
-
-      printf_unfiltered ("\t");
-      printf_unfiltered ("%04x%04x%04x%04x", l[0], l[1], l[2], l[3]);
-    }
-  if (regno == 15)
-    {
-      unsigned short rval;
-      int i;
-
-      read_relative_register_raw_bytes (regno, (char *) (&rval));
-
-      printf_unfiltered ("\n");
-      for (i = 0; i < 10; i += 2)
-	{
-	  printf_unfiltered ("(sp+%d=%04x)", i, read_memory_short (rval + i));
-	}
-    }
-
-}
-
-void
-z8k_pop_frame ()
-{
-}
-
-struct cmd_list_element *setmemorylist;
-
-void
-z8k_set_pointer_size (newsize)
-     int newsize;
-{
-  static int oldsize = 0;
-
-  if (oldsize != newsize)
-    {
-      printf_unfiltered ("pointer size set to %d bits\n", newsize);
-      oldsize = newsize;
-      if (newsize == 32)
-	{
-	  BIG = 1;
-	}
-      else
-	{
-	  BIG = 0;
-	}
-      _initialize_gdbtypes ();
-    }
-}
-
-static void
-segmented_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  z8k_set_pointer_size (32);
-}
-
-static void
-unsegmented_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  z8k_set_pointer_size (16);
-}
-
-static void
-set_memory (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  printf_unfiltered ("\"set memory\" must be followed by the name of a memory subcommand.\n");
-  help_list (setmemorylist, "set memory ", -1, gdb_stdout);
-}
-
-void
-_initialize_z8ktdep ()
-{
-  tm_print_insn = gdb_print_insn_z8k;
-
-  add_prefix_cmd ("memory", no_class, set_memory,
-		  "set the memory model", &setmemorylist, "set memory ", 0,
-		  &setlist);
-  add_cmd ("segmented", class_support, segmented_command,
-	   "Set segmented memory model.", &setmemorylist);
-  add_cmd ("unsegmented", class_support, unsegmented_command,
-	   "Set unsegmented memory model.", &setmemorylist);
-
-}