797920b952
While GDB can work with any XML description given to it there is special handling for SVE registers on the GDB side which makes the users life a little better. The changes aren't that major and all the registers save the $vg reported the same. All that changes is: - report org.gnu.gdb.aarch64.sve - use gdb nomenclature for names and types - minor re-ordering of the types to match reference - re-enable ieee_half (as we know gdb supports it now) - $vg is now a 64 bit int - check $vN and $zN aliasing in test Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Luis Machado <luis.machado@linaro.org> Message-Id: <20210108224256.2321-11-alex.bennee@linaro.org>
93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
from __future__ import print_function
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#
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# Test the SVE ZReg reports the right amount of data. It uses the
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# sve-ioctl test and examines the register data each time the
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# __sve_ld_done breakpoint is hit.
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#
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# This is launched via tests/guest-debug/run-test.py
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#
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import gdb
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import sys
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initial_vlen = 0
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failcount = 0
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def report(cond, msg):
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"Report success/fail of test"
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if cond:
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print ("PASS: %s" % (msg))
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else:
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print ("FAIL: %s" % (msg))
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global failcount
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failcount += 1
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class TestBreakpoint(gdb.Breakpoint):
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def __init__(self, sym_name="__sve_ld_done"):
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super(TestBreakpoint, self).__init__(sym_name)
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# self.sym, ok = gdb.lookup_symbol(sym_name)
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def stop(self):
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val_i = gdb.parse_and_eval('i')
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global initial_vlen
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try:
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for i in range(0, int(val_i)):
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val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
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report(int(val_z) == i, "z0.b.u[%d] == %d" % (i, i))
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for i in range(i + 1, initial_vlen):
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val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
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report(int(val_z) == 0, "z0.b.u[%d] == 0" % (i))
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except gdb.error:
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report(False, "checking zregs (out of range)")
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# Check the aliased V registers are set and GDB has correctly
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# created them for us having recognised and handled SVE.
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try:
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for i in range(0, 16):
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val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
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val_v = gdb.parse_and_eval("$v0.b.u[%d]" % i)
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report(int(val_z) == int(val_v),
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"v0.b.u[%d] == z0.b.u[%d]" % (i, i))
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except gdb.error:
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report(False, "checking vregs (out of range)")
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def run_test():
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"Run through the tests one by one"
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print ("Setup breakpoint")
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bp = TestBreakpoint()
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global initial_vlen
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vg = gdb.parse_and_eval("$vg")
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initial_vlen = int(vg) * 8
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gdb.execute("c")
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#
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# This runs as the script it sourced (via -x, via run-test.py)
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#
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try:
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inferior = gdb.selected_inferior()
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arch = inferior.architecture()
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report(arch.name() == "aarch64", "connected to aarch64")
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except (gdb.error, AttributeError):
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print("SKIPPING (not connected)", file=sys.stderr)
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exit(0)
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try:
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# These are not very useful in scripts
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gdb.execute("set pagination off")
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# Run the actual tests
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run_test()
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except:
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print ("GDB Exception: %s" % (sys.exc_info()[0]))
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failcount += 1
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import code
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code.InteractiveConsole(locals=globals()).interact()
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raise
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print("All tests complete: %d failures" % failcount)
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exit(failcount)
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