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

   1 from __future__ import print_function
   2 #
   3 # Test the SVE registers are visible and changeable via gdbstub
   4 #
   5 # This is launched via tests/guest-debug/run-test.py
   6 #
   7
   8 import gdb
   9 import sys
  10
  11 MAGIC = 0xDEADBEEF
  12
  13 failcount = 0
  14
  15 def report(cond, msg):
  16     "Report success/fail of test"
  17     if cond:
  18         print ("PASS: %s" % (msg))
  19     else:
  20         print ("FAIL: %s" % (msg))
  21         global failcount
  22         failcount += 1
  23
  24 def run_test():
  25     "Run through the tests one by one"
  26
  27     gdb.execute("info registers")
  28     report(True, "info registers")
  29
  30     gdb.execute("info registers vector")
  31     report(True, "info registers vector")
  32
  33     # Now all the zregs
  34     frame = gdb.selected_frame()
  35     for i in range(0, 32):
  36         rname = "z%d" % (i)
  37         zreg = frame.read_register(rname)
  38         report(True, "Reading %s" % rname)
  39         for j in range(0, 4):
  40             cmd = "set $%s.q.u[%d] = 0x%x" % (rname, j, MAGIC)
  41             gdb.execute(cmd)
  42             report(True, "%s" % cmd)
  43         for j in range(0, 4):
  44             reg = "$%s.q.u[%d]" % (rname, j)
  45             v = gdb.parse_and_eval(reg)
  46             report(str(v.type) == "uint128_t", "size of %s" % (reg))
  47         for j in range(0, 8):
  48             cmd = "set $%s.d.u[%d] = 0x%x" % (rname, j, MAGIC)
  49             gdb.execute(cmd)
  50             report(True, "%s" % cmd)
  51         for j in range(0, 8):
  52             reg = "$%s.d.u[%d]" % (rname, j)
  53             v = gdb.parse_and_eval(reg)
  54             report(str(v.type) == "uint64_t", "size of %s" % (reg))
  55             report(int(v) == MAGIC, "%s is 0x%x" % (reg, MAGIC))
  56
  57 #
  58 # This runs as the script it sourced (via -x, via run-test.py)
  59 #
  60 try:
  61     inferior = gdb.selected_inferior()
  62     arch = inferior.architecture()
  63     report(arch.name() == "aarch64", "connected to aarch64")
  64 except (gdb.error, AttributeError):
  65     print("SKIPPING (not connected)", file=sys.stderr)
  66     exit(0)
  67
  68 try:
  69     # Run the actual tests
  70     run_test()
  71 except:
  72     print ("GDB Exception: %s" % (sys.exc_info()[0]))
  73     failcount += 1
  74
  75 print("All tests complete: %d failures" % failcount)
  76
  77 exit(failcount)