+2012-10-01 Andrew Burgess <aburgess@broadcom.com>
+
+ * target.c (simple_search_memory): Include access length in
+ warning message.
+
2012-09-28 Nathan Miller <nathanm2@us.ibm.com>
Edjunior Machado <emachado@linux.vnet.ibm.com>
+2012-10-01 Andrew Burgess <aburgess@broadcom.com>
+
+ * server.c (handle_search_memory_1): Include access length in
+ warning message.
+
2012-09-05 Michael Brandt <michael.brandt@axis.com>
* linux-crisv32-low.c: Fix compile errors.
if (gdb_read_memory (start_addr, search_buf, search_buf_size)
!= search_buf_size)
{
- warning ("Unable to access target memory at 0x%lx, halting search.",
- (long) start_addr);
+ warning ("Unable to access %ld bytes of target "
+ "memory at 0x%lx, halting search.",
+ (long) search_buf_size, (long) start_addr);
return -1;
}
if (gdb_read_memory (read_addr, search_buf + keep_len,
nr_to_read) != search_buf_size)
{
- warning ("Unable to access target memory "
+ warning ("Unable to access %ld bytes of target memory "
"at 0x%lx, halting search.",
- (long) read_addr);
+ (long) nr_to_read, (long) read_addr);
return -1;
}
if (target_read (ops, TARGET_OBJECT_MEMORY, NULL,
search_buf, start_addr, search_buf_size) != search_buf_size)
{
- warning (_("Unable to access target memory at %s, halting search."),
- hex_string (start_addr));
+ warning (_("Unable to access %s bytes of target "
+ "memory at %s, halting search."),
+ pulongest (search_buf_size), hex_string (start_addr));
do_cleanups (old_cleanups);
return -1;
}
search_buf + keep_len, read_addr,
nr_to_read) != nr_to_read)
{
- warning (_("Unable to access target "
+ warning (_("Unable to access %s bytes of target "
"memory at %s, halting search."),
+ plongest (nr_to_read),
hex_string (read_addr));
do_cleanups (old_cleanups);
return -1;
+2012-10-01 Andrew Burgess <aburgess@broadcom.com>
+
+ Test find command on unmapped memory.
+ * gdb.base/find-unmapped.c: New file.
+ * gdb.base/find-unmapped.exp: New file.
+
2012-09-29 Yao Qi <yao@codesourcery.com>
* gdb.trace/mi-tracepoint-changed.exp: New.
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2012 Free Software Foundation, Inc.
+
+ 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 3 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, see <http://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <string.h>
+
+#define CHUNK_SIZE 16000 /* same as findcmd.c's */
+
+void *global_var_0;
+void *global_var_1;
+void *global_var_2;
+
+void
+breakpt ()
+{
+ /* Nothing. */
+}
+
+int
+main (void)
+{
+ void *p;
+ size_t pg_size;
+ int pg_count;
+ void *unmapped_page, *last_mapped_page, *first_mapped_page;
+
+ /*
+ Map enough pages to cover at least CHUNK_SIZE, and one extra page. We
+ then unmap the last page.
+
+ From gdb we can then perform find commands into unmapped region, gdb
+ should give an error.
+
+ .-- global_var_0 .-- global_var_1
+ | | .-- global_var_2
+ | | |
+ .----.----.----.----.----.
+ | | | | | |
+ '----'----'----'----'----'
+ |<- CHUNK_SIZE ->|
+
+ If CHUNK_SIZE equals page size then we'll get 3 pages, and if
+ CHUNK_SIZE is less than page size we'll get 2 pages. The test will
+ still work in these cases.
+
+ (1) We do a find from global_var_0 to global_var_2, this will fail when
+ loading the second chunk, as we know at least CHUNK_SIZE bytes are in
+ mapped space.
+
+ (2) We do a find from global_var_1 to global_var_2, this will fail when
+ loading the first chunk, assuming the CHUNK_SIZE is at least 16 bytes.
+
+ (3) We do a find from global_var_2 to (global_var_2 + 16), this too
+ will fail when loading the first chunk regardless of the chunk size.
+ */
+
+ pg_size = getpagesize ();
+ /* The +2 ensures the extra page. */
+ pg_count = CHUNK_SIZE / pg_size + 2;
+
+ p = mmap (0, pg_count * pg_size, PROT_READ|PROT_WRITE,
+ MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+ if (p == MAP_FAILED)
+ {
+ perror ("mmap");
+ return EXIT_FAILURE;
+ }
+
+ memset (p, 0, pg_count * pg_size);
+
+ if (munmap (p + (pg_count - 1) * pg_size, pg_size) == -1)
+ {
+ perror ("munmap");
+ return EXIT_FAILURE;
+ }
+
+ first_mapped_page = p;
+ last_mapped_page = p + (pg_count - 2) * pg_size;
+ unmapped_page = last_mapped_page + pg_size;
+
+ /* Setup global variables we reference from gdb. */
+ global_var_0 = first_mapped_page;
+ global_var_1 = unmapped_page - 16;
+ global_var_2 = unmapped_page + 16;
+
+ breakpt ();
+
+ return EXIT_SUCCESS;
+}
--- /dev/null
+# Copyright 2012 Free Software Foundation, Inc.
+
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+if {[is_remote target]} {
+ # gdbserver prints the warning message but expect is parsing only the
+ # GDB output, not the gdbserver output.
+ return 0
+}
+
+standard_testfile
+
+if { [prepare_for_testing ${testfile}.exp ${testfile}] } {
+ return -1
+}
+
+if ![runto breakpt] {
+ return -1
+}
+
+# Basic attempt to read memory from globals.
+gdb_test "x/5w global_var_1" \
+ "$hex:\[ \t\]+0\[ \t\]+0\[ \t\]+0\[ \t\]+0\r\n$hex:\[ \t\]+Cannot access memory at address $hex"
+gdb_test "x/5w global_var_2" \
+ "$hex:\[ \t\]+Cannot access memory at address $hex"
+
+# Now try a find starting from each global.
+gdb_test "find global_var_0, global_var_2, 0xff" \
+ "warning: Unable to access $decimal bytes of target memory at $hex, halting search\.\r\nPattern not found."
+
+gdb_test "find global_var_1, global_var_2, 0xff" \
+ "warning: Unable to access $decimal bytes of target memory at $hex, halting search\.\r\nPattern not found."
+
+gdb_test "find global_var_2, (global_var_2 + 16), 0xff" \
+ "warning: Unable to access $decimal bytes of target memory at $hex, halting search\.\r\nPattern not found."
projects / deliverable / binutils-gdb.git / commitdiff
