C++ paddress函数代码示例

void
fprint_auxv_entry (struct ui_file *file, const char *name,
		   const char *description, enum auxv_format format,
		   CORE_ADDR type, CORE_ADDR val)
{
  fprintf_filtered (file, ("%-4s %-20s %-30s "),
		    plongest (type), name, description);
  switch (format)
    {
    case AUXV_FORMAT_DEC:
      fprintf_filtered (file, ("%s\n"), plongest (val));
      break;
    case AUXV_FORMAT_HEX:
      fprintf_filtered (file, ("%s\n"), paddress (target_gdbarch (), val));
      break;
    case AUXV_FORMAT_STR:
      {
	struct value_print_options opts;

	get_user_print_options (&opts);
	if (opts.addressprint)
	  fprintf_filtered (file, ("%s "), paddress (target_gdbarch (), val));
	val_print_string (builtin_type (target_gdbarch ())->builtin_char,
			  NULL, val, -1, file, &opts);
	fprintf_filtered (file, ("\n"));
      }
      break;
    }
}

static void
uninsert_raw_breakpoint (struct raw_breakpoint *bp)
{
  if (bp->inserted < 0)
    {
      if (debug_threads)
	debug_printf ("Breakpoint at %s is marked insert-disabled.\n",
		      paddress (bp->pc));
    }
  else if (bp->inserted > 0)
    {
      int err;

      bp->inserted = 0;

      err = the_target->remove_point (bp->raw_type, bp->pc, bp->size, bp);
      if (err != 0)
	{
	  bp->inserted = 1;

	  if (debug_threads)
	    debug_printf ("Failed to uninsert raw breakpoint at 0x%s.\n",
			  paddress (bp->pc));
	}
    }
}

static void
aarch64_show_debug_reg_state (struct aarch64_debug_reg_state *state,
			      const char *func, CORE_ADDR addr,
			      int len, enum target_hw_bp_type type)
{
  int i;

  fprintf (stderr, "%s", func);
  if (addr || len)
    fprintf (stderr, " (addr=0x%08lx, len=%d, type=%s)",
	     (unsigned long) addr, len,
	     type == hw_write ? "hw-write-watchpoint"
	     : (type == hw_read ? "hw-read-watchpoint"
		: (type == hw_access ? "hw-access-watchpoint"
		   : (type == hw_execute ? "hw-breakpoint"
		      : "??unknown??"))));
  fprintf (stderr, ":\n");

  fprintf (stderr, "\tBREAKPOINTs:\n");
  for (i = 0; i < aarch64_num_bp_regs; i++)
    fprintf (stderr, "\tBP%d: addr=0x%s, ctrl=0x%08x, ref.count=%d\n",
	     i, paddress (state->dr_addr_bp[i]),
	     state->dr_ctrl_bp[i], state->dr_ref_count_bp[i]);

  fprintf (stderr, "\tWATCHPOINTs:\n");
  for (i = 0; i < aarch64_num_wp_regs; i++)
    fprintf (stderr, "\tWP%d: addr=0x%s, ctrl=0x%08x, ref.count=%d\n",
	     i, paddress (state->dr_addr_wp[i]),
	     state->dr_ctrl_wp[i], state->dr_ref_count_wp[i]);
}

static struct raw_breakpoint *
set_raw_breakpoint_at (CORE_ADDR where)
{
  struct process_info *proc = current_process ();
  struct raw_breakpoint *bp;
  int err;
  unsigned char buf[MAX_BREAKPOINT_LEN];

  if (breakpoint_data == NULL)
    error ("Target does not support breakpoints.");

  bp = find_raw_breakpoint_at (where);
  if (bp != NULL)
    {
      bp->refcount++;
      return bp;
    }

  bp = xcalloc (1, sizeof (*bp));
  bp->pc = where;
  bp->refcount = 1;

  /* Note that there can be fast tracepoint jumps installed in the
     same memory range, so to get at the original memory, we need to
     use read_inferior_memory, which masks those out.  */
  err = read_inferior_memory (where, buf, breakpoint_len);
  if (err != 0)
    {
      if (debug_threads)
	fprintf (stderr,
		 "Failed to read shadow memory of"
		 " breakpoint at 0x%s (%s).\n",
		 paddress (where), strerror (err));
      free (bp);
      return NULL;
    }
  memcpy (bp->old_data, buf, breakpoint_len);

  err = (*the_target->write_memory) (where, breakpoint_data,
				     breakpoint_len);
  if (err != 0)
    {
      if (debug_threads)
	fprintf (stderr,
		 "Failed to insert breakpoint at 0x%s (%s).\n",
		 paddress (where), strerror (err));
      free (bp);
      return NULL;
    }

  /* Link the breakpoint in.  */
  bp->inserted = 1;
  bp->next = proc->raw_breakpoints;
  proc->raw_breakpoints = bp;
  return bp;
}

void
sparc64_linux_handle_segmentation_fault (struct gdbarch *gdbarch,
				      struct ui_out *uiout)
{
  if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word != 64)
    return;

  CORE_ADDR addr = 0;
  long si_code = 0;

  try
    {
      /* Evaluate si_code to see if the segfault is ADI related.  */
      si_code = parse_and_eval_long ("$_siginfo.si_code\n");

      if (si_code >= SEGV_ACCADI && si_code <= SEGV_ADIPERR)
        addr = parse_and_eval_long ("$_siginfo._sifields._sigfault.si_addr");
    }
  catch (const gdb_exception &exception)
    {
      return;
    }

  /* Print out ADI event based on sig_code value */
  switch (si_code)
    {
    case SEGV_ACCADI:	/* adi not enabled */
      uiout->text ("\n");
      uiout->field_string ("sigcode-meaning", _("ADI disabled"));
      uiout->text (_(" while accessing address "));
      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
      break;
    case SEGV_ADIDERR:	/* disrupting mismatch */
      uiout->text ("\n");
      uiout->field_string ("sigcode-meaning", _("ADI deferred mismatch"));
      uiout->text (_(" while accessing address "));
      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
      break;
    case SEGV_ADIPERR:	/* precise mismatch */
      uiout->text ("\n");
      uiout->field_string ("sigcode-meaning", _("ADI precise mismatch"));
      uiout->text (_(" while accessing address "));
      uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, addr));
      break;
    default:
      break;
    }

}

void
uninsert_fast_tracepoint_jumps_at (CORE_ADDR pc)
{
  struct fast_tracepoint_jump *jp;
  int err;

  jp = find_fast_tracepoint_jump_at (pc);
  if (jp == NULL)
    {
      /* This can happen when we remove all breakpoints while handling
	 a step-over.  */
      if (debug_threads)
	fprintf (stderr,
		 "Could not find fast tracepoint jump at 0x%s "
		 "in list (uninserting).\n",
		 paddress (pc));
      return;
    }

  if (jp->inserted)
    {
      unsigned char *buf;

      jp->inserted = 0;

      /* Since there can be trap breakpoints inserted in the same
	 address range, we use use `write_inferior_memory', which
	 takes care of layering breakpoints on top of fast
	 tracepoints, and on top of the buffer we pass it.  This works
	 because we've already marked the fast tracepoint fast
	 tracepoint jump uninserted above.  Also note that we need to
	 pass the current shadow contents, because
	 write_inferior_memory updates any shadow memory with what we
	 pass here, and we want that to be a nop.  */
      buf = alloca (jp->length);
      memcpy (buf, fast_tracepoint_jump_shadow (jp), jp->length);
      err = write_inferior_memory (jp->pc, buf, jp->length);
      if (err != 0)
	{
	  jp->inserted = 1;

	  if (debug_threads)
	    fprintf (stderr,
		     "Failed to uninsert fast tracepoint jump at 0x%s (%s).\n",
		     paddress (pc), strerror (err));
	}
    }
}

int
print_unpacked_pointer (struct type *type,
			CORE_ADDR address, CORE_ADDR addr,
			int format, struct ui_file *stream)
{
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

  if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
    {
      /* Try to print what function it points to.  */
      print_function_pointer_address (addr, stream);
      /* Return value is irrelevant except for string pointers.  */
      return 0;
    }

  if (addressprint && format != 's')
    fputs_filtered (paddress (address), stream);

  /* For a pointer to char or unsigned char, also print the string
     pointed to, unless pointer is null.  */

  if (TYPE_LENGTH (elttype) == 1
      && TYPE_CODE (elttype) == TYPE_CODE_INT
      && (format == 0 || format == 's')
      && addr != 0)
      return val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
  
  return 0;
}

static void
print_variable_at_address (struct type *type,
			   const gdb_byte *valaddr,
			   struct ui_file *stream,
			   int recurse,
			   const struct value_print_options *options)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  CORE_ADDR addr = unpack_pointer (type, valaddr);
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

  fprintf_filtered (stream, "[");
  fputs_filtered (paddress (gdbarch, addr), stream);
  fprintf_filtered (stream, "] : ");
  
  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
    {
      struct value *deref_val =
	value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));

      common_val_print (deref_val, stream, recurse, options, current_language);
    }
  else
    fputs_filtered ("???", stream);
}

static void
print_variable_at_address (struct type *type, const gdb_byte *valaddr,
			   struct ui_file *stream, int format,
			   int deref_ref, int recurse,
			   enum val_prettyprint pretty)
{
  CORE_ADDR addr = unpack_pointer (type, valaddr);
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

  fprintf_filtered (stream, "[");
  fputs_filtered (paddress (addr), stream);
  fprintf_filtered (stream, "] : ");
  
  if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
    {
      struct value *deref_val =
	value_at
	(TYPE_TARGET_TYPE (type),
	 unpack_pointer (lookup_pointer_type (builtin_type_void),
			 valaddr));
      common_val_print (deref_val, stream, format, deref_ref,
			recurse, pretty);
    }
  else
    fputs_filtered ("???", stream);
}

static int
print_unpacked_pointer (struct type *type,
			CORE_ADDR address, CORE_ADDR addr,
			const struct value_print_options *options,
			struct ui_file *stream)
{
  struct gdbarch *gdbarch = get_type_arch (type);
  struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));

  if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
    {
      /* Try to print what function it points to.  */
      print_function_pointer_address (gdbarch, addr, stream,
				      options->addressprint);
      /* Return value is irrelevant except for string pointers.  */
      return 0;
    }

  if (options->addressprint && options->format != 's')
    fputs_filtered (paddress (gdbarch, address), stream);

  /* For a pointer to char or unsigned char, also print the string
     pointed to, unless pointer is null.  */

  if (TYPE_LENGTH (elttype) == 1
      && TYPE_CODE (elttype) == TYPE_CODE_INT
      && (options->format == 0 || options->format == 's')
      && addr != 0)
    return val_print_string (TYPE_TARGET_TYPE (type), addr, -1,
			     stream, options);
  
  return 0;
}

static CORE_ADDR
stub_gnu_ifunc_resolve_addr (struct gdbarch *gdbarch, CORE_ADDR pc)
{
  error (_("GDB cannot resolve STT_GNU_IFUNC symbol at address %s without "
	   "the ELF support compiled in."),
	 paddress (gdbarch, pc));
}

int
remove_memory_breakpoint (struct raw_breakpoint *bp)
{
  unsigned char buf[MAX_BREAKPOINT_LEN];
  int err;

  /* Since there can be trap breakpoints inserted in the same address
     range, we use `write_inferior_memory', which takes care of
     layering breakpoints on top of fast tracepoints, and on top of
     the buffer we pass it.  This works because the caller has already
     either unlinked the breakpoint or marked it uninserted.  Also
     note that we need to pass the current shadow contents, because
     write_inferior_memory updates any shadow memory with what we pass
     here, and we want that to be a nop.  */
  memcpy (buf, bp->old_data, breakpoint_len);
  err = write_inferior_memory (bp->pc, buf, breakpoint_len);
  if (err != 0)
    {
      if (debug_threads)
	debug_printf ("Failed to uninsert raw breakpoint "
		      "at 0x%s (%s) while deleting it.\n",
		      paddress (bp->pc), strerror (err));
    }
  return err != 0 ? -1 : 0;
}

void
reinsert_breakpoints_at (CORE_ADDR pc)
{
  struct process_info *proc = current_process ();
  struct raw_breakpoint *bp;
  int found = 0;

  for (bp = proc->raw_breakpoints; bp != NULL; bp = bp->next)
    if ((bp->raw_type == raw_bkpt_type_sw
	 || bp->raw_type == raw_bkpt_type_hw)
	&& bp->pc == pc)
      {
	found = 1;

	reinsert_raw_breakpoint (bp);
      }

  if (!found)
    {
      /* This can happen when we remove all breakpoints while handling
	 a step-over.  */
      if (debug_threads)
	debug_printf ("Could not find raw breakpoint at 0x%s "
		      "in list (reinserting).\n",
		      paddress (pc));
    }
}

struct call_site *
call_site_for_pc (struct gdbarch *gdbarch, CORE_ADDR pc)
{
  struct symtab *symtab;
  void **slot = NULL;

  /* -1 as tail call PC can be already after the compilation unit range.  */
  symtab = find_pc_symtab (pc - 1);

  if (symtab != NULL && symtab->call_site_htab != NULL)
    slot = htab_find_slot (symtab->call_site_htab, &pc, NO_INSERT);

  if (slot == NULL)
    {
      struct bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (pc);

      /* DW_TAG_gnu_call_site will be missing just if GCC could not determine
	 the call target.  */
      throw_error (NO_ENTRY_VALUE_ERROR,
		   _("DW_OP_GNU_entry_value resolving cannot find "
		     "DW_TAG_GNU_call_site %s in %s"),
		   paddress (gdbarch, pc),
		   (msym.minsym == NULL ? "???"
		    : SYMBOL_PRINT_NAME (msym.minsym)));
    }

  return *slot;
}

static void
uninsert_raw_breakpoint (struct raw_breakpoint *bp)
{
  if (bp->inserted)
    {
      int err;
      unsigned char buf[MAX_BREAKPOINT_LEN];

      bp->inserted = 0;
      /* Since there can be fast tracepoint jumps inserted in the same
	 address range, we use `write_inferior_memory', which takes
	 care of layering breakpoints on top of fast tracepoints, and
	 on top of the buffer we pass it.  This works because we've
	 already unlinked the fast tracepoint jump above.  Also note
	 that we need to pass the current shadow contents, because
	 write_inferior_memory updates any shadow memory with what we
	 pass here, and we want that to be a nop.  */
      memcpy (buf, bp->old_data, breakpoint_len);
      err = write_inferior_memory (bp->pc, buf, breakpoint_len);
      if (err != 0)
	{
	  bp->inserted = 1;

	  if (debug_threads)
	    fprintf (stderr,
		     "Failed to uninsert raw breakpoint at 0x%s (%s).\n",
		     paddress (bp->pc), strerror (err));
	}
    }
}