bfd282882d
This converts tid_range_parser and get_number_or_range to be classes.
The various tid_range_parser_* and get_number_or_range_* functions
become methods on the respective classes. Then it updates the users
to follow.
The rationale for the change is that this provides better
encapsulation. For example, this forced me to think of a better
interface between tid_range_parser and get_number_or_range, since the
former peeked into the latter's internals a bit too much. That ended
up resulting mostly in these two not-just-straight-1-1 changes:
void
-tid_range_parser_skip (struct tid_range_parser *parser)
+tid_range_parser::skip_range ()
{
...
- tid_range_parser_init (parser, parser->range_parser.end_ptr,
- parser->default_inferior);
+ m_range_parser.skip_range ();
+ init (m_range_parser.string (), m_default_inferior);
}
and:
/* If we successfully parsed a thread number or finished parsing a
thread range, switch back to assuming the next TID is
inferior-qualified. */
- if (parser->range_parser.end_ptr == NULL
- || parser->range_parser.string == parser->range_parser.end_ptr)
+ if (!m_range_parser.in_range ())
{
For the same reason (encapsulation), this moves the enum
tid_range_state definition to within the tid_parser class's scope,
since that is private implementation detail.
While at it, switch to use "bool" for booleans.
gdb/ChangeLog:
2016-10-13 Pedro Alves <palves@redhat.com>
Tom Tromey <tom@tromey.com>
* tid-parse.h (tid_range_parser): New class.
(enum tid_range_state): Move into tid_range_parser's scope.
Remove TID_RANGE_ prefix from all values.
(tid_range_parser_get_tid, tid_range_parser_get_tid_range)
(tid_range_parser_star_range, tid_range_parser_finished)
(tid_range_parser_skip, tid_range_parser_qualified): Don't
declare.
(tid_is_in_list): Update comment.
* tid-parse.c (tid_range_parser::tid_range_parser): New.
(init, finished, get_string, skip, tid_is_qualified)
(get_tid_or_range, get_tid_range, get_tid, star_range): Rename;
turn into methods.
(tid_is_in_list): Adjust.
* cli/cli-utils.h (number_or_range_parser): New class.
(init_number_or_range, get_number_or_range)
(number_range_setup_range): Don't declare.
* cli/cli-utils.c
(number_or_range_parser::number_or_range_parser): New.
(init_number_or_range, get_number_or_range)
(number_range_setup_range): Rename; turn into methods.
(number_is_in_list): Adjust.
* breakpoint.c (map_breakpoint_numbers): Adjust. Use bool.
(trace_pass_command, get_tracepoint_by_number): Adjust.
* breakpoint.h (get_tracepoint_by_number): Adjust.
* inferior.c (detach_inferior_command, kill_inferior_command)
(remove_inferior_command): Adjust.
* linespec.c (decode_line_2): Adjust.
* memattr.c (mem_enable_command, mem_disable_command)
(mem_delete_command): Adjust.
* printcmd.c (map_display_numbers): Adjust.
* reverse.c (delete_bookmark_command, bookmarks_info): Adjust.
* thread.c (thread_apply_command): Adjust.
750 lines
19 KiB
C
750 lines
19 KiB
C
/* Memory attributes support, for GDB.
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Copyright (C) 2001-2016 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "memattr.h"
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#include "target.h"
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#include "target-dcache.h"
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#include "value.h"
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#include "language.h"
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#include "vec.h"
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#include "breakpoint.h"
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#include "cli/cli-utils.h"
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const struct mem_attrib default_mem_attrib =
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{
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MEM_RW, /* mode */
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MEM_WIDTH_UNSPECIFIED,
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0, /* hwbreak */
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0, /* cache */
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0, /* verify */
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-1 /* Flash blocksize not specified. */
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};
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const struct mem_attrib unknown_mem_attrib =
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{
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MEM_NONE, /* mode */
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MEM_WIDTH_UNSPECIFIED,
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0, /* hwbreak */
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0, /* cache */
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0, /* verify */
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-1 /* Flash blocksize not specified. */
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};
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VEC(mem_region_s) *mem_region_list, *target_mem_region_list;
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static int mem_number = 0;
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/* If this flag is set, the memory region list should be automatically
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updated from the target. If it is clear, the list is user-controlled
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and should be left alone. */
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static int mem_use_target = 1;
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/* If this flag is set, we have tried to fetch the target memory regions
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since the last time it was invalidated. If that list is still
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empty, then the target can't supply memory regions. */
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static int target_mem_regions_valid;
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/* If this flag is set, gdb will assume that memory ranges not
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specified by the memory map have type MEM_NONE, and will
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emit errors on all accesses to that memory. */
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static int inaccessible_by_default = 1;
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static void
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show_inaccessible_by_default (struct ui_file *file, int from_tty,
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struct cmd_list_element *c,
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const char *value)
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{
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if (inaccessible_by_default)
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fprintf_filtered (file, _("Unknown memory addresses will "
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"be treated as inaccessible.\n"));
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else
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fprintf_filtered (file, _("Unknown memory addresses "
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"will be treated as RAM.\n"));
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}
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/* Predicate function which returns true if LHS should sort before RHS
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in a list of memory regions, useful for VEC_lower_bound. */
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static int
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mem_region_lessthan (const struct mem_region *lhs,
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const struct mem_region *rhs)
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{
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return lhs->lo < rhs->lo;
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}
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/* A helper function suitable for qsort, used to sort a
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VEC(mem_region_s) by starting address. */
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int
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mem_region_cmp (const void *untyped_lhs, const void *untyped_rhs)
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{
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const struct mem_region *lhs = (const struct mem_region *) untyped_lhs;
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const struct mem_region *rhs = (const struct mem_region *) untyped_rhs;
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if (lhs->lo < rhs->lo)
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return -1;
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else if (lhs->lo == rhs->lo)
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return 0;
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else
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return 1;
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}
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/* Allocate a new memory region, with default settings. */
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void
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mem_region_init (struct mem_region *newobj)
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{
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memset (newobj, 0, sizeof (struct mem_region));
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newobj->enabled_p = 1;
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newobj->attrib = default_mem_attrib;
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}
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/* This function should be called before any command which would
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modify the memory region list. It will handle switching from
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a target-provided list to a local list, if necessary. */
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static void
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require_user_regions (int from_tty)
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{
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struct mem_region *m;
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int ix, length;
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/* If we're already using a user-provided list, nothing to do. */
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if (!mem_use_target)
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return;
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/* Switch to a user-provided list (possibly a copy of the current
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one). */
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mem_use_target = 0;
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/* If we don't have a target-provided region list yet, then
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no need to warn. */
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if (mem_region_list == NULL)
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return;
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/* Otherwise, let the user know how to get back. */
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if (from_tty)
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warning (_("Switching to manual control of memory regions; use "
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"\"mem auto\" to fetch regions from the target again."));
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/* And create a new list for the user to modify. */
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length = VEC_length (mem_region_s, target_mem_region_list);
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mem_region_list = VEC_alloc (mem_region_s, length);
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for (ix = 0; VEC_iterate (mem_region_s, target_mem_region_list, ix, m); ix++)
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VEC_quick_push (mem_region_s, mem_region_list, m);
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}
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/* This function should be called before any command which would
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read the memory region list, other than those which call
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require_user_regions. It will handle fetching the
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target-provided list, if necessary. */
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static void
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require_target_regions (void)
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{
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if (mem_use_target && !target_mem_regions_valid)
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{
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target_mem_regions_valid = 1;
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target_mem_region_list = target_memory_map ();
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mem_region_list = target_mem_region_list;
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}
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}
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static void
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create_mem_region (CORE_ADDR lo, CORE_ADDR hi,
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const struct mem_attrib *attrib)
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{
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struct mem_region newobj;
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int i, ix;
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/* lo == hi is a useless empty region. */
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if (lo >= hi && hi != 0)
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{
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printf_unfiltered (_("invalid memory region: low >= high\n"));
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return;
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}
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mem_region_init (&newobj);
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newobj.lo = lo;
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newobj.hi = hi;
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ix = VEC_lower_bound (mem_region_s, mem_region_list, &newobj,
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mem_region_lessthan);
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/* Check for an overlapping memory region. We only need to check
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in the vicinity - at most one before and one after the
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insertion point. */
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for (i = ix - 1; i < ix + 1; i++)
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{
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struct mem_region *n;
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if (i < 0)
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continue;
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if (i >= VEC_length (mem_region_s, mem_region_list))
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continue;
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n = VEC_index (mem_region_s, mem_region_list, i);
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if ((lo >= n->lo && (lo < n->hi || n->hi == 0))
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|| (hi > n->lo && (hi <= n->hi || n->hi == 0))
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|| (lo <= n->lo && ((hi >= n->hi && n->hi != 0) || hi == 0)))
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{
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printf_unfiltered (_("overlapping memory region\n"));
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return;
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}
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}
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newobj.number = ++mem_number;
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newobj.attrib = *attrib;
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VEC_safe_insert (mem_region_s, mem_region_list, ix, &newobj);
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}
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/*
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* Look up the memory region cooresponding to ADDR.
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*/
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struct mem_region *
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lookup_mem_region (CORE_ADDR addr)
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{
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static struct mem_region region;
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struct mem_region *m;
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CORE_ADDR lo;
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CORE_ADDR hi;
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int ix;
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require_target_regions ();
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/* First we initialize LO and HI so that they describe the entire
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memory space. As we process the memory region chain, they are
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redefined to describe the minimal region containing ADDR. LO
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and HI are used in the case where no memory region is defined
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that contains ADDR. If a memory region is disabled, it is
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treated as if it does not exist. The initial values for LO
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and HI represent the bottom and top of memory. */
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lo = 0;
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hi = 0;
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/* Either find memory range containing ADDRESS, or set LO and HI
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to the nearest boundaries of an existing memory range.
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If we ever want to support a huge list of memory regions, this
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check should be replaced with a binary search (probably using
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VEC_lower_bound). */
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for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
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{
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if (m->enabled_p == 1)
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{
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/* If the address is in the memory region, return that
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memory range. */
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if (addr >= m->lo && (addr < m->hi || m->hi == 0))
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return m;
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/* This (correctly) won't match if m->hi == 0, representing
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the top of the address space, because CORE_ADDR is unsigned;
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no value of LO is less than zero. */
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if (addr >= m->hi && lo < m->hi)
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lo = m->hi;
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/* This will never set HI to zero; if we're here and ADDR
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is at or below M, and the region starts at zero, then ADDR
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would have been in the region. */
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if (addr <= m->lo && (hi == 0 || hi > m->lo))
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hi = m->lo;
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}
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}
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/* Because no region was found, we must cons up one based on what
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was learned above. */
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region.lo = lo;
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region.hi = hi;
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/* When no memory map is defined at all, we always return
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'default_mem_attrib', so that we do not make all memory
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inaccessible for targets that don't provide a memory map. */
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if (inaccessible_by_default && !VEC_empty (mem_region_s, mem_region_list))
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region.attrib = unknown_mem_attrib;
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else
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region.attrib = default_mem_attrib;
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return ®ion;
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}
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/* Invalidate any memory regions fetched from the target. */
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void
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invalidate_target_mem_regions (void)
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{
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if (!target_mem_regions_valid)
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return;
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target_mem_regions_valid = 0;
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VEC_free (mem_region_s, target_mem_region_list);
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if (mem_use_target)
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mem_region_list = NULL;
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}
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/* Clear memory region list. */
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static void
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mem_clear (void)
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{
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VEC_free (mem_region_s, mem_region_list);
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}
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static void
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mem_command (char *args, int from_tty)
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{
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CORE_ADDR lo, hi;
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char *tok;
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struct mem_attrib attrib;
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if (!args)
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error_no_arg (_("No mem"));
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/* For "mem auto", switch back to using a target provided list. */
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if (strcmp (args, "auto") == 0)
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{
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if (mem_use_target)
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return;
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if (mem_region_list != target_mem_region_list)
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{
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mem_clear ();
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mem_region_list = target_mem_region_list;
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}
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mem_use_target = 1;
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return;
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}
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require_user_regions (from_tty);
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tok = strtok (args, " \t");
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if (!tok)
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error (_("no lo address"));
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lo = parse_and_eval_address (tok);
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tok = strtok (NULL, " \t");
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if (!tok)
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error (_("no hi address"));
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hi = parse_and_eval_address (tok);
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attrib = default_mem_attrib;
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while ((tok = strtok (NULL, " \t")) != NULL)
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{
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if (strcmp (tok, "rw") == 0)
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attrib.mode = MEM_RW;
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else if (strcmp (tok, "ro") == 0)
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attrib.mode = MEM_RO;
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else if (strcmp (tok, "wo") == 0)
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attrib.mode = MEM_WO;
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else if (strcmp (tok, "8") == 0)
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attrib.width = MEM_WIDTH_8;
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else if (strcmp (tok, "16") == 0)
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{
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if ((lo % 2 != 0) || (hi % 2 != 0))
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error (_("region bounds not 16 bit aligned"));
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attrib.width = MEM_WIDTH_16;
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}
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else if (strcmp (tok, "32") == 0)
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{
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if ((lo % 4 != 0) || (hi % 4 != 0))
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error (_("region bounds not 32 bit aligned"));
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attrib.width = MEM_WIDTH_32;
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}
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else if (strcmp (tok, "64") == 0)
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{
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if ((lo % 8 != 0) || (hi % 8 != 0))
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error (_("region bounds not 64 bit aligned"));
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attrib.width = MEM_WIDTH_64;
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}
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#if 0
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else if (strcmp (tok, "hwbreak") == 0)
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attrib.hwbreak = 1;
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else if (strcmp (tok, "swbreak") == 0)
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attrib.hwbreak = 0;
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#endif
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else if (strcmp (tok, "cache") == 0)
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attrib.cache = 1;
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else if (strcmp (tok, "nocache") == 0)
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attrib.cache = 0;
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#if 0
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else if (strcmp (tok, "verify") == 0)
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attrib.verify = 1;
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else if (strcmp (tok, "noverify") == 0)
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attrib.verify = 0;
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#endif
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else
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error (_("unknown attribute: %s"), tok);
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}
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create_mem_region (lo, hi, &attrib);
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}
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static void
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mem_info_command (char *args, int from_tty)
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{
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struct mem_region *m;
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struct mem_attrib *attrib;
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int ix;
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if (mem_use_target)
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printf_filtered (_("Using memory regions provided by the target.\n"));
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else
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printf_filtered (_("Using user-defined memory regions.\n"));
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require_target_regions ();
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if (!mem_region_list)
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{
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printf_unfiltered (_("There are no memory regions defined.\n"));
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return;
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}
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printf_filtered ("Num ");
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printf_filtered ("Enb ");
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printf_filtered ("Low Addr ");
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if (gdbarch_addr_bit (target_gdbarch ()) > 32)
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printf_filtered (" ");
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printf_filtered ("High Addr ");
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if (gdbarch_addr_bit (target_gdbarch ()) > 32)
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printf_filtered (" ");
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printf_filtered ("Attrs ");
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printf_filtered ("\n");
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for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
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{
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char *tmp;
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printf_filtered ("%-3d %-3c\t",
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m->number,
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m->enabled_p ? 'y' : 'n');
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if (gdbarch_addr_bit (target_gdbarch ()) <= 32)
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tmp = hex_string_custom (m->lo, 8);
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else
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tmp = hex_string_custom (m->lo, 16);
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printf_filtered ("%s ", tmp);
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if (gdbarch_addr_bit (target_gdbarch ()) <= 32)
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{
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if (m->hi == 0)
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tmp = "0x100000000";
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else
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tmp = hex_string_custom (m->hi, 8);
|
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}
|
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else
|
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{
|
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if (m->hi == 0)
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tmp = "0x10000000000000000";
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else
|
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tmp = hex_string_custom (m->hi, 16);
|
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}
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|
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printf_filtered ("%s ", tmp);
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|
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/* Print a token for each attribute.
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||
|
||
* FIXME: Should we output a comma after each token? It may
|
||
* make it easier for users to read, but we'd lose the ability
|
||
* to cut-and-paste the list of attributes when defining a new
|
||
* region. Perhaps that is not important.
|
||
*
|
||
* FIXME: If more attributes are added to GDB, the output may
|
||
* become cluttered and difficult for users to read. At that
|
||
* time, we may want to consider printing tokens only if they
|
||
* are different from the default attribute. */
|
||
|
||
attrib = &m->attrib;
|
||
switch (attrib->mode)
|
||
{
|
||
case MEM_RW:
|
||
printf_filtered ("rw ");
|
||
break;
|
||
case MEM_RO:
|
||
printf_filtered ("ro ");
|
||
break;
|
||
case MEM_WO:
|
||
printf_filtered ("wo ");
|
||
break;
|
||
case MEM_FLASH:
|
||
printf_filtered ("flash blocksize 0x%x ", attrib->blocksize);
|
||
break;
|
||
}
|
||
|
||
switch (attrib->width)
|
||
{
|
||
case MEM_WIDTH_8:
|
||
printf_filtered ("8 ");
|
||
break;
|
||
case MEM_WIDTH_16:
|
||
printf_filtered ("16 ");
|
||
break;
|
||
case MEM_WIDTH_32:
|
||
printf_filtered ("32 ");
|
||
break;
|
||
case MEM_WIDTH_64:
|
||
printf_filtered ("64 ");
|
||
break;
|
||
case MEM_WIDTH_UNSPECIFIED:
|
||
break;
|
||
}
|
||
|
||
#if 0
|
||
if (attrib->hwbreak)
|
||
printf_filtered ("hwbreak");
|
||
else
|
||
printf_filtered ("swbreak");
|
||
#endif
|
||
|
||
if (attrib->cache)
|
||
printf_filtered ("cache ");
|
||
else
|
||
printf_filtered ("nocache ");
|
||
|
||
#if 0
|
||
if (attrib->verify)
|
||
printf_filtered ("verify ");
|
||
else
|
||
printf_filtered ("noverify ");
|
||
#endif
|
||
|
||
printf_filtered ("\n");
|
||
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
}
|
||
|
||
|
||
/* Enable the memory region number NUM. */
|
||
|
||
static void
|
||
mem_enable (int num)
|
||
{
|
||
struct mem_region *m;
|
||
int ix;
|
||
|
||
for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
|
||
if (m->number == num)
|
||
{
|
||
m->enabled_p = 1;
|
||
return;
|
||
}
|
||
printf_unfiltered (_("No memory region number %d.\n"), num);
|
||
}
|
||
|
||
static void
|
||
mem_enable_command (char *args, int from_tty)
|
||
{
|
||
int num;
|
||
struct mem_region *m;
|
||
int ix;
|
||
|
||
require_user_regions (from_tty);
|
||
|
||
target_dcache_invalidate ();
|
||
|
||
if (args == NULL || *args == '\0')
|
||
{ /* Enable all mem regions. */
|
||
for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
|
||
m->enabled_p = 1;
|
||
}
|
||
else
|
||
{
|
||
number_or_range_parser parser (args);
|
||
while (!parser.finished ())
|
||
{
|
||
num = parser.get_number ();
|
||
mem_enable (num);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Disable the memory region number NUM. */
|
||
|
||
static void
|
||
mem_disable (int num)
|
||
{
|
||
struct mem_region *m;
|
||
int ix;
|
||
|
||
for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
|
||
if (m->number == num)
|
||
{
|
||
m->enabled_p = 0;
|
||
return;
|
||
}
|
||
printf_unfiltered (_("No memory region number %d.\n"), num);
|
||
}
|
||
|
||
static void
|
||
mem_disable_command (char *args, int from_tty)
|
||
{
|
||
require_user_regions (from_tty);
|
||
|
||
target_dcache_invalidate ();
|
||
|
||
if (args == NULL || *args == '\0')
|
||
{
|
||
struct mem_region *m;
|
||
int ix;
|
||
|
||
for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
|
||
m->enabled_p = 0;
|
||
}
|
||
else
|
||
{
|
||
number_or_range_parser parser (args);
|
||
while (!parser.finished ())
|
||
{
|
||
int num = parser.get_number ();
|
||
mem_disable (num);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Delete the memory region number NUM. */
|
||
|
||
static void
|
||
mem_delete (int num)
|
||
{
|
||
struct mem_region *m;
|
||
int ix;
|
||
|
||
if (!mem_region_list)
|
||
{
|
||
printf_unfiltered (_("No memory region number %d.\n"), num);
|
||
return;
|
||
}
|
||
|
||
for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++)
|
||
if (m->number == num)
|
||
break;
|
||
|
||
if (m == NULL)
|
||
{
|
||
printf_unfiltered (_("No memory region number %d.\n"), num);
|
||
return;
|
||
}
|
||
|
||
VEC_ordered_remove (mem_region_s, mem_region_list, ix);
|
||
}
|
||
|
||
static void
|
||
mem_delete_command (char *args, int from_tty)
|
||
{
|
||
require_user_regions (from_tty);
|
||
|
||
target_dcache_invalidate ();
|
||
|
||
if (args == NULL || *args == '\0')
|
||
{
|
||
if (query (_("Delete all memory regions? ")))
|
||
mem_clear ();
|
||
dont_repeat ();
|
||
return;
|
||
}
|
||
|
||
number_or_range_parser parser (args);
|
||
while (!parser.finished ())
|
||
{
|
||
int num = parser.get_number ();
|
||
mem_delete (num);
|
||
}
|
||
|
||
dont_repeat ();
|
||
}
|
||
|
||
static void
|
||
dummy_cmd (char *args, int from_tty)
|
||
{
|
||
}
|
||
|
||
extern initialize_file_ftype _initialize_mem; /* -Wmissing-prototype */
|
||
|
||
static struct cmd_list_element *mem_set_cmdlist;
|
||
static struct cmd_list_element *mem_show_cmdlist;
|
||
|
||
void
|
||
_initialize_mem (void)
|
||
{
|
||
add_com ("mem", class_vars, mem_command, _("\
|
||
Define attributes for memory region or reset memory region handling to\n\
|
||
target-based.\n\
|
||
Usage: mem auto\n\
|
||
mem <lo addr> <hi addr> [<mode> <width> <cache>],\n\
|
||
where <mode> may be rw (read/write), ro (read-only) or wo (write-only),\n\
|
||
<width> may be 8, 16, 32, or 64, and\n\
|
||
<cache> may be cache or nocache"));
|
||
|
||
add_cmd ("mem", class_vars, mem_enable_command, _("\
|
||
Enable memory region.\n\
|
||
Arguments are the code numbers of the memory regions to enable.\n\
|
||
Usage: enable mem <code number>...\n\
|
||
Do \"info mem\" to see current list of code numbers."), &enablelist);
|
||
|
||
add_cmd ("mem", class_vars, mem_disable_command, _("\
|
||
Disable memory region.\n\
|
||
Arguments are the code numbers of the memory regions to disable.\n\
|
||
Usage: disable mem <code number>...\n\
|
||
Do \"info mem\" to see current list of code numbers."), &disablelist);
|
||
|
||
add_cmd ("mem", class_vars, mem_delete_command, _("\
|
||
Delete memory region.\n\
|
||
Arguments are the code numbers of the memory regions to delete.\n\
|
||
Usage: delete mem <code number>...\n\
|
||
Do \"info mem\" to see current list of code numbers."), &deletelist);
|
||
|
||
add_info ("mem", mem_info_command,
|
||
_("Memory region attributes"));
|
||
|
||
add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\
|
||
Memory regions settings"),
|
||
&mem_set_cmdlist, "set mem ",
|
||
0/* allow-unknown */, &setlist);
|
||
add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\
|
||
Memory regions settings"),
|
||
&mem_show_cmdlist, "show mem ",
|
||
0/* allow-unknown */, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("inaccessible-by-default", no_class,
|
||
&inaccessible_by_default, _("\
|
||
Set handling of unknown memory regions."), _("\
|
||
Show handling of unknown memory regions."), _("\
|
||
If on, and some memory map is defined, debugger will emit errors on\n\
|
||
accesses to memory not defined in the memory map. If off, accesses to all\n\
|
||
memory addresses will be allowed."),
|
||
NULL,
|
||
show_inaccessible_by_default,
|
||
&mem_set_cmdlist,
|
||
&mem_show_cmdlist);
|
||
}
|