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AArch64: Add unit testing for logical tag set/get operations

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Add some unit testing to exercise setting/getting logical tags in the
AArch64 implementation.

gdb/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* aarch64-linux-tdep.c: Include gdbsupport/selftest.h.
	(aarch64_linux_ltag_tests): New function.
	(_initialize_aarch64_linux_tdep): Register aarch64_linux_ltag_tests.
This commit is contained in:
Luis Machado 2020-06-15 15:11:07 -03:00
parent c7782e50b1
commit b4a7d4fcfe
2 changed files with 37 additions and 0 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2021-03-24 Luis Machado <luis.machado@linaro.org>
* aarch64-linux-tdep.c: Include gdbsupport/selftest.h.
(aarch64_linux_ltag_tests): New function.
(_initialize_aarch64_linux_tdep): Register aarch64_linux_ltag_tests.
2021-03-24 Luis Machado <luis.machado@linaro.org>
* aarch64-linux-tdep.c: Include target.h, arch-utils.h, value.h.

31
gdb/aarch64-linux-tdep.c
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@ -51,6 +51,8 @@
#include "arch-utils.h"
#include "value.h"
#include "gdbsupport/selftest.h"
/* Signal frame handling.
+------------+ ^
@ -1940,10 +1942,39 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options);
}
#if GDB_SELF_TEST
namespace selftests {
/* Verify functions to read and write logical tags. */
static void
aarch64_linux_ltag_tests (void)
{
/* We have 4 bits of tags, but we test writing all the bits of the top
byte of address. */
for (int i = 0; i < 1 << 8; i++)
{
CORE_ADDR addr = ((CORE_ADDR) i << 56) | 0xdeadbeef;
SELF_CHECK (aarch64_mte_get_ltag (addr) == (i & 0xf));
addr = aarch64_mte_set_ltag (0xdeadbeef, i);
SELF_CHECK (addr = ((CORE_ADDR) (i & 0xf) << 56) | 0xdeadbeef);
}
}
} // namespace selftests
#endif /* GDB_SELF_TEST */
void _initialize_aarch64_linux_tdep ();
void
_initialize_aarch64_linux_tdep ()
{
gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_LINUX,
aarch64_linux_init_abi);
#if GDB_SELF_TEST
selftests::register_test ("aarch64-linux-tagged-address",
selftests::aarch64_linux_ltag_tests);
#endif
}