Initial creation of sourceware repository

1 files changed, 0 insertions, 653 deletions

diff --git a/gdb/h8500-tdep.c b/gdb/h8500-tdep.c
deleted file mode 100644
index 49fab2d..0000000
--- a/gdb/h8500-tdep.c
+++ /dev/null
@@ -1,653 +0,0 @@
-/* Target-dependent code for Hitachi H8/500, for GDB.
-   Copyright 1993, 1994, 1995 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 "gdbtypes.h"
-#include "gdbcmd.h"
-#include "value.h"
-#include "dis-asm.h"
-#include "gdbcore.h"
-
-#define UNSIGNED_SHORT(X) ((X) & 0xffff)
-
-static int code_size = 2;
-
-static int data_size = 2;
-
-/* Shape of an H8/500 frame :
-
-   arg-n
-   ..
-   arg-2
-   arg-1
-   return address <2 or 4 bytes>
-   old fp	  <2 bytes>
-   auto-n
-   ..
-   auto-1
-   saved registers
-
-*/
-
-/* an easy to debug H8 stack frame looks like:
-0x6df6		push	r6
-0x0d76  	mov.w   r7,r6
-0x6dfn          push    reg
-0x7905 nnnn  	mov.w  #n,r5    or   0x1b87  subs #2,sp
-0x1957       	sub.w  r5,sp
-
- */
-
-#define IS_PUSH(x) (((x) & 0xff00)==0x6d00)
-#define IS_LINK_8(x) ((x) == 0x17)
-#define IS_LINK_16(x) ((x) == 0x1f)
-#define IS_MOVE_FP(x) ((x) == 0x0d76)
-#define IS_MOV_SP_FP(x) ((x) == 0x0d76)
-#define IS_SUB2_SP(x) ((x) == 0x1b87)
-#define IS_MOVK_R5(x) ((x) == 0x7905)
-#define IS_SUB_R5SP(x) ((x) == 0x1957)
-
-#define LINK_8 0x17
-#define LINK_16 0x1f
-
-int minimum_mode = 1;
-
-CORE_ADDR
-h8500_skip_prologue (start_pc)
-     CORE_ADDR start_pc;
-{
-  short int w;
-
-  w = read_memory_integer (start_pc, 1);
-  if (w == LINK_8)
-    {
-      start_pc += 2;
-      w = read_memory_integer (start_pc, 1);
-    }
-
-  if (w == LINK_16)
-    {
-      start_pc += 3;
-      w = read_memory_integer (start_pc, 2);
-    }
-
-  return start_pc;
-}
-
-CORE_ADDR
-h8500_addr_bits_remove (addr)
-     CORE_ADDR addr;
-{
-  return ((addr) & 0xffffff);
-}
-
-/* Given a GDB frame, determine the address of the calling function's frame.
-   This will be used to create a new GDB frame struct, and then
-   INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
-
-   For us, the frame address is its stack pointer value, so we look up
-   the function prologue to determine the caller's sp value, and return it.  */
-
-CORE_ADDR
-h8500_frame_chain (thisframe)
-     struct frame_info *thisframe;
-{
-  if (!inside_entry_file (thisframe->pc))
-    return (read_memory_integer (FRAME_FP (thisframe), PTR_SIZE));
-  else
-    return 0;
-}
-
-/* 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;
-     char *pword1;
-{
-  if (addr < lim + 8)
-    {
-      read_memory (addr, pword1, 1);
-      read_memory (addr, pword1 + 1, 1);
-      return 1;
-    }
-  return 0;
-}
-
-/* Examine the prologue of a function.  `ip' points to the first
-   instruction.  `limit' is the limit of the prologue (e.g. the addr
-   of the first linenumber, or perhaps the program counter if we're
-   stepping through).  `frame_sp' is the stack pointer value in use in
-   this frame.  `fsr' is a pointer to a frame_saved_regs structure
-   into which we put info about the registers saved by this frame.
-   `fi' is a struct frame_info pointer; we fill in various fields in
-   it to reflect the offsets of the arg pointer and the locals
-   pointer.  */
-
-/* Return the saved PC from this frame. */
-
-CORE_ADDR
-frame_saved_pc (frame)
-     struct frame_info *frame;
-{
-  return read_memory_integer (FRAME_FP (frame) + 2, PTR_SIZE);
-}
-
-void 
-h8500_pop_frame ()
-{
-  unsigned regnum;
-  struct frame_saved_regs fsr;
-  struct frame_info *frame = get_current_frame ();
-
-  get_frame_saved_regs (frame, &fsr);
-
-  for (regnum = 0; regnum < 8; regnum++)
-    {
-      if (fsr.regs[regnum])
-	write_register (regnum, read_memory_short (fsr.regs[regnum]));
-
-      flush_cached_frames ();
-    }
-}
-
-void
-print_register_hook (regno)
-     int regno;
-{
-  if (regno == CCR_REGNUM)
-    {
-      /* CCR register */
-
-      int C, Z, N, V;
-      unsigned char b[2];
-      unsigned char l;
-
-      read_relative_register_raw_bytes (regno, b);
-      l = b[1];
-      printf_unfiltered ("\t");
-      printf_unfiltered ("I-%d - ", (l & 0x80) != 0);
-      N = (l & 0x8) != 0;
-      Z = (l & 0x4) != 0;
-      V = (l & 0x2) != 0;
-      C = (l & 0x1) != 0;
-      printf_unfiltered ("N-%d ", N);
-      printf_unfiltered ("Z-%d ", Z);
-      printf_unfiltered ("V-%d ", V);
-      printf_unfiltered ("C-%d ", C);
-      if ((C | Z) == 0)
-	printf_unfiltered ("u> ");
-      if ((C | Z) == 1)
-	printf_unfiltered ("u<= ");
-      if ((C == 0))
-	printf_unfiltered ("u>= ");
-      if (C == 1)
-	printf_unfiltered ("u< ");
-      if (Z == 0)
-	printf_unfiltered ("!= ");
-      if (Z == 1)
-	printf_unfiltered ("== ");
-      if ((N ^ V) == 0)
-	printf_unfiltered (">= ");
-      if ((N ^ V) == 1)
-	printf_unfiltered ("< ");
-      if ((Z | (N ^ V)) == 0)
-	printf_unfiltered ("> ");
-      if ((Z | (N ^ V)) == 1)
-	printf_unfiltered ("<= ");
-    }
-}
-
-int
-h8500_register_size (regno)
-     int regno;
-{
-  switch (regno)
-    {
-    case SEG_C_REGNUM:
-    case SEG_D_REGNUM:
-    case SEG_E_REGNUM:
-    case SEG_T_REGNUM:
-      return 1;
-    case R0_REGNUM:
-    case R1_REGNUM:
-    case R2_REGNUM:
-    case R3_REGNUM:
-    case R4_REGNUM:
-    case R5_REGNUM:
-    case R6_REGNUM:
-    case R7_REGNUM:
-    case CCR_REGNUM:
-      return 2;
-
-    case PR0_REGNUM:
-    case PR1_REGNUM:
-    case PR2_REGNUM:
-    case PR3_REGNUM:
-    case PR4_REGNUM:
-    case PR5_REGNUM:
-    case PR6_REGNUM:
-    case PR7_REGNUM:
-    case PC_REGNUM:
-      return 4;
-    default:
-      abort ();
-    }
-}
-
-struct type *
-h8500_register_virtual_type (regno)
-     int regno;
-{
-  switch (regno)
-    {
-    case SEG_C_REGNUM:
-    case SEG_E_REGNUM:
-    case SEG_D_REGNUM:
-    case SEG_T_REGNUM:
-      return builtin_type_unsigned_char;
-    case R0_REGNUM:
-    case R1_REGNUM:
-    case R2_REGNUM:
-    case R3_REGNUM:
-    case R4_REGNUM:
-    case R5_REGNUM:
-    case R6_REGNUM:
-    case R7_REGNUM:
-    case CCR_REGNUM:
-      return builtin_type_unsigned_short;
-    case PR0_REGNUM:
-    case PR1_REGNUM:
-    case PR2_REGNUM:
-    case PR3_REGNUM:
-    case PR4_REGNUM:
-    case PR5_REGNUM:
-    case PR6_REGNUM:
-    case PR7_REGNUM:
-    case PC_REGNUM:
-      return builtin_type_unsigned_long;
-    default:
-      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
-frame_find_saved_regs (frame_info, frame_saved_regs)
-     struct frame_info *frame_info;
-     struct frame_saved_regs *frame_saved_regs;
-{
-  register int regnum;
-  register int regmask;
-  register CORE_ADDR next_addr;
-  register CORE_ADDR pc;
-  unsigned char thebyte;
-
-  memset (frame_saved_regs, '\0', 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.
-	 */
-
-      thebyte = read_memory_integer (pc, 1);
-      if (0x1f == thebyte)
-	next_addr = (frame_info)->frame + read_memory_integer (pc += 1, 2), pc += 2;
-      else if (0x17 == thebyte)
-	next_addr = (frame_info)->frame + read_memory_integer (pc += 1, 1), pc += 1;
-      else
-	goto lose;
-#if 0
-      /* FIXME steve */
-      /* If have an add:g.waddal #-n, sp next, adjust next_addr.  */
-      if ((0x0c0177777 & read_memory_integer (pc, 2)) == 0157774)
-	next_addr += read_memory_integer (pc += 2, 4), pc += 4;
-#endif
-    }
-
-  thebyte = read_memory_integer (pc, 1);
-  if (thebyte == 0x12)
-    {
-      /* Got stm */
-      pc++;
-      regmask = read_memory_integer (pc, 1);
-      pc++;
-      for (regnum = 0; regnum < 8; regnum++, regmask >>= 1)
-	{
-	  if (regmask & 1)
-	    {
-	      (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
-	    }
-	}
-      thebyte = read_memory_integer (pc, 1);
-    }
-  /* Maybe got a load of pushes */
-  while (thebyte == 0xbf)
-    {
-      pc++;
-      regnum = read_memory_integer (pc, 1) & 0x7;
-      pc++;
-      (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
-      thebyte = read_memory_integer (pc, 1);
-    }
-
-lose:;
-
-  /* Remember the address of the frame pointer */
-  (frame_saved_regs)->regs[FP_REGNUM] = (frame_info)->frame;
-
-  /* This is where the old sp is hidden */
-  (frame_saved_regs)->regs[SP_REGNUM] = (frame_info)->frame;
-
-  /* And the PC - remember the pushed FP is always two bytes long */
-  (frame_saved_regs)->regs[PC_REGNUM] = (frame_info)->frame + 2;
-}
-
-CORE_ADDR
-saved_pc_after_call ()
-{
-  int x;
-  int a = read_register (SP_REGNUM);
-
-  x = read_memory_integer (a, code_size);
-  if (code_size == 2)
-    {
-      /* Stick current code segement onto top */
-      x &= 0xffff;
-      x |= read_register (SEG_C_REGNUM) << 16;
-    }
-  x &= 0xffffff;
-  return x;
-}
-
-void
-h8500_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)
-	{
-	  minimum_mode = 0;
-	}
-      else
-	{
-	  minimum_mode = 1;
-	}
-      _initialize_gdbtypes ();
-    }
-}
-
-static void
-big_command ()
-{
-  h8500_set_pointer_size (32);
-  code_size = 4;
-  data_size = 4;
-}
-
-static void
-medium_command ()
-{
-  h8500_set_pointer_size (32);
-  code_size = 4;
-  data_size = 2;
-}
-
-static void
-compact_command ()
-{
-  h8500_set_pointer_size (32);
-  code_size = 2;
-  data_size = 4;
-}
-
-static void
-small_command ()
-{
-  h8500_set_pointer_size (16);
-  code_size = 2;
-  data_size = 2;
-}
-
-static struct cmd_list_element *setmemorylist;
-
-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);
-}
-
-/* See if variable name is ppc or pr[0-7] */
-
-int
-h8500_is_trapped_internalvar (name)
-     char *name;
-{
-  if (name[0] != 'p')
-    return 0;
-
-  if (strcmp (name + 1, "pc") == 0)
-    return 1;
-
-  if (name[1] == 'r'
-      && name[2] >= '0'
-      && name[2] <= '7'
-      && name[3] == '\000')
-    return 1;
-  else
-    return 0;
-}
-
-value_ptr
-h8500_value_of_trapped_internalvar (var)
-     struct internalvar *var;
-{
-  LONGEST regval;
-  unsigned char regbuf[4];
-  int page_regnum, regnum;
-
-  regnum = var->name[2] == 'c' ? PC_REGNUM : var->name[2] - '0';
-
-  switch (var->name[2])
-    {
-    case 'c':
-      page_regnum = SEG_C_REGNUM;
-      break;
-    case '0':
-    case '1':
-    case '2':
-    case '3':
-      page_regnum = SEG_D_REGNUM;
-      break;
-    case '4':
-    case '5':
-      page_regnum = SEG_E_REGNUM;
-      break;
-    case '6':
-    case '7':
-      page_regnum = SEG_T_REGNUM;
-      break;
-    }
-
-  get_saved_register (regbuf, NULL, NULL, selected_frame, page_regnum, NULL);
-  regval = regbuf[0] << 16;
-
-  get_saved_register (regbuf, NULL, NULL, selected_frame, regnum, NULL);
-  regval |= regbuf[0] << 8 | regbuf[1];	/* XXX host/target byte order */
-
-  free (var->value);		/* Free up old value */
-
-  var->value = value_from_longest (builtin_type_unsigned_long, regval);
-  release_value (var->value);	/* Unchain new value */
-
-  VALUE_LVAL (var->value) = lval_internalvar;
-  VALUE_INTERNALVAR (var->value) = var;
-  return var->value;
-}
-
-void
-h8500_set_trapped_internalvar (var, newval, bitpos, bitsize, offset)
-     struct internalvar *var;
-     int offset, bitpos, bitsize;
-     value_ptr newval;
-{
-  char *page_regnum, *regnum;
-  char expression[100];
-  unsigned new_regval;
-  struct type *type;
-  enum type_code newval_type_code;
-
-  type = check_typedef (VALUE_TYPE (newval));
-  newval_type_code = TYPE_CODE (type);
-
-  if ((newval_type_code != TYPE_CODE_INT
-       && newval_type_code != TYPE_CODE_PTR)
-      || TYPE_LENGTH (type) != sizeof (new_regval))
-    error ("Illegal type (%s) for assignment to $%s\n",
-	   TYPE_NAME (VALUE_TYPE (newval)), var->name);
-
-  new_regval = *(long *) VALUE_CONTENTS_RAW (newval);
-
-  regnum = var->name + 1;
-
-  switch (var->name[2])
-    {
-    case 'c':
-      page_regnum = "cp";
-      break;
-    case '0':
-    case '1':
-    case '2':
-    case '3':
-      page_regnum = "dp";
-      break;
-    case '4':
-    case '5':
-      page_regnum = "ep";
-      break;
-    case '6':
-    case '7':
-      page_regnum = "tp";
-      break;
-    }
-
-  sprintf (expression, "$%s=%d", page_regnum, new_regval >> 16);
-  parse_and_eval (expression);
-
-  sprintf (expression, "$%s=%d", regnum, new_regval & 0xffff);
-  parse_and_eval (expression);
-}
-
-CORE_ADDR
-h8500_read_sp ()
-{
-  return read_register (PR7_REGNUM);
-}
-
-void
-h8500_write_sp (v)
-     CORE_ADDR v;
-{
-  write_register (PR7_REGNUM, v);
-}
-
-CORE_ADDR
-h8500_read_pc (pid)
-     int pid;
-{
-  return read_register (PC_REGNUM);
-}
-
-void
-h8500_write_pc (v, pid)
-     CORE_ADDR v;
-     int pid;
-{
-  write_register (PC_REGNUM, v);
-}
-
-CORE_ADDR
-h8500_read_fp ()
-{
-  return read_register (PR6_REGNUM);
-}
-
-void
-h8500_write_fp (v)
-     CORE_ADDR v;
-{
-  write_register (PR6_REGNUM, v);
-}
-
-void
-_initialize_h8500_tdep ()
-{
-  tm_print_insn = print_insn_h8500;
-
-  add_prefix_cmd ("memory", no_class, set_memory,
-		  "set the memory model", &setmemorylist, "set memory ", 0,
-		  &setlist);
-
-  add_cmd ("small", class_support, small_command,
-	   "Set small memory model. (16 bit code, 16 bit data)", &setmemorylist);
-
-  add_cmd ("big", class_support, big_command,
-	   "Set big memory model. (32 bit code, 32 bit data)", &setmemorylist);
-
-  add_cmd ("medium", class_support, medium_command,
-	   "Set medium memory model. (32 bit code, 16 bit data)", &setmemorylist);
-
-  add_cmd ("compact", class_support, compact_command,
-	   "Set compact memory model. (16 bit code, 32 bit data)", &setmemorylist);
-
-}