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/* Self tests for simple_search_memory for GDB, the GNU debugger.
Copyright (C) 2020-2024 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 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 "gdbsupport/common-defs.h"
#include "gdbsupport/selftest.h"
#include "gdbsupport/search.h"
namespace selftests {
namespace search_memory_tests {
static void
run_tests ()
{
size_t size = 2 * SEARCH_CHUNK_SIZE + 1;
std::vector<gdb_byte> data (size);
data[size - 1] = 'x';
bool read_fully = false;
bool read_off_end = false;
auto read_memory = [&] (CORE_ADDR from, gdb_byte *out, size_t len)
{
if (from + len > data.size ())
read_off_end = true;
else
memcpy (out, &data[from], len);
if (from + len == data.size ())
read_fully = true;
return true;
};
gdb_byte pattern = 'x';
CORE_ADDR addr = 0;
int result = simple_search_memory (read_memory, 0, data.size (),
&pattern, 1, &addr);
/* In this case we don't care if read_fully was set or not. */
SELF_CHECK (result == 1);
SELF_CHECK (!read_off_end);
SELF_CHECK (addr == size - 1);
addr = 0;
read_fully = false;
read_off_end = false;
pattern = 'q';
result = simple_search_memory (read_memory, 0, data.size (),
&pattern, 1, &addr);
SELF_CHECK (result == 0);
SELF_CHECK (!read_off_end);
SELF_CHECK (read_fully);
SELF_CHECK (addr == 0);
/* Setup from PR gdb/17756. */
size = 0x7bb00;
data = std::vector<gdb_byte> (size);
const CORE_ADDR base_addr = 0x08370000;
const gdb_byte wpattern[] = { 0x90, 0x8b, 0x98, 0x8 };
const CORE_ADDR found_addr = 0x837bac8;
memcpy (&data[found_addr - base_addr], wpattern, sizeof (wpattern));
auto read_memory_2 = [&] (CORE_ADDR from, gdb_byte *out, size_t len)
{
memcpy (out, &data[from - base_addr], len);
return true;
};
result = simple_search_memory (read_memory_2, base_addr, data.size (),
wpattern, sizeof (wpattern), &addr);
SELF_CHECK (result == 1);
SELF_CHECK (addr == found_addr);
}
} /* namespace search_memory_tests */
} /* namespace selftests */
void _initialize_search_memory_selftests ();
void
_initialize_search_memory_selftests ()
{
selftests::register_test ("search_memory",
selftests::search_memory_tests::run_tests);
}
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