diff options
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/Makefile.in | 1 | ||||
| -rw-r--r-- | gdb/unittests/search-memory-selftests.c | 99 |
3 files changed, 106 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index ff6554d..3c9d07e 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,11 @@ 2020-10-07 Tom Tromey <tromey@adacore.com> + * unittests/search-memory-selftests.c: New file. + * Makefile.in (SELFTESTS_SRCS): Add + unittests/search-memory-selftests.c. + +2020-10-07 Tom Tromey <tromey@adacore.com> + PR gdb/16930: * findcmd.c (_initialize_mem_search): Mention that the range is inclusive. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index e14d41c..80b788c 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -458,6 +458,7 @@ SELFTESTS_SRCS = \ unittests/scoped_fd-selftests.c \ unittests/scoped_mmap-selftests.c \ unittests/scoped_restore-selftests.c \ + unittests/search-memory-selftests.c \ unittests/string_view-selftests.c \ unittests/style-selftests.c \ unittests/tracepoint-selftests.c \ diff --git a/gdb/unittests/search-memory-selftests.c b/gdb/unittests/search-memory-selftests.c new file mode 100644 index 0000000..5d2a1b9 --- /dev/null +++ b/gdb/unittests/search-memory-selftests.c @@ -0,0 +1,99 @@ +/* Self tests for simple_search_memory for GDB, the GNU debugger. + + Copyright (C) 2020 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); +} |