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Add hypervisor support for PrivRw #540

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Add hypervisor support for PrivRw #540

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13 changes: 9 additions & 4 deletions debug/gdbserver.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1575,14 +1575,16 @@ def setup(self):
# pylint: disable=attribute-defined-outside-init
self.gdb.load()

misa = self.hart.misa
# It may be affected by reset halt
misa = self.gdb.p(f"$misa=0x{self.hart.misa:x}")
self.supported = set()
if misa & (1<<20):
self.supported.add(0)
if misa & (1<<18):
self.supported.add(1)
if misa & (1<<7):
self.supported.add(2)
self.supported.add(4)
self.supported.add(5)
self.supported.add(3)

self.disable_pmp()
Expand All @@ -1598,14 +1600,17 @@ def setup(self):
class PrivRw(PrivTest):
"""Test reading/writing priv."""
def test(self):
self.write_nop_program(4)
for privilege in range(4):
privilege_limit=len(self.supported)+1
self.write_nop_program(privilege_limit)
for privilege in range(privilege_limit):
self.gdb.p(f"$priv={privilege}")
self.gdb.stepi()
actual = self.gdb.p("$priv")
assertIn(actual, self.supported)
if privilege in self.supported:
assertEqual(actual, privilege)
# Restore to machine mode
self.gdb.p("$priv=3")

class PrivChange(PrivTest):
"""Test that the core's privilege level actually changes when the debugger
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