tests/tcg/aarch64/gdbstub/test-sve-ioctl.py

   1 from __future__ import print_function
   2 #
   3 # Test the SVE ZReg reports the right amount of data. It uses the
   4 # sve-ioctl test and examines the register data each time the
   5 # __sve_ld_done breakpoint is hit.
   6 #
   7 # This is launched via tests/guest-debug/run-test.py
   8 #
   9
  10 import gdb
  11 from test_gdbstub import main, report
  12
  13 initial_vlen = 0
  14
  15
  16 class TestBreakpoint(gdb.Breakpoint):
  17     def __init__(self, sym_name="__sve_ld_done"):
  18         super(TestBreakpoint, self).__init__(sym_name)
  19         # self.sym, ok = gdb.lookup_symbol(sym_name)
  20
  21     def stop(self):
  22         val_i = gdb.parse_and_eval('i')
  23         global initial_vlen
  24         try:
  25             for i in range(0, int(val_i)):
  26                 val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
  27                 report(int(val_z) == i, "z0.b.u[%d] == %d" % (i, i))
  28             for i in range(i + 1, initial_vlen):
  29                 val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
  30                 report(int(val_z) == 0, "z0.b.u[%d] == 0" % (i))
  31         except gdb.error:
  32             report(False, "checking zregs (out of range)")
  33
  34         # Check the aliased V registers are set and GDB has correctly
  35         # created them for us having recognised and handled SVE.
  36         try:
  37             for i in range(0, 16):
  38                 val_z = gdb.parse_and_eval("$z0.b.u[%d]" % i)
  39                 val_v = gdb.parse_and_eval("$v0.b.u[%d]" % i)
  40                 report(int(val_z) == int(val_v),
  41                        "v0.b.u[%d] == z0.b.u[%d]" % (i, i))
  42         except gdb.error:
  43             report(False, "checking vregs (out of range)")
  44
  45
  46 def run_test():
  47     "Run through the tests one by one"
  48
  49     print ("Setup breakpoint")
  50     bp = TestBreakpoint()
  51
  52     global initial_vlen
  53     vg = gdb.parse_and_eval("$vg")
  54     initial_vlen = int(vg) * 8
  55
  56     gdb.execute("c")
  57
  58
  59 main(run_test, expected_arch="aarch64")