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m1n1.hw.uat: Decode permissions properly

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Signed-off-by: Asahi Lina <lina@asahilina.net>
This commit is contained in:
Asahi Lina 2022-08-23 15:31:23 +09:00
parent da9ceddeac
commit 77a00eb5b3
1 changed files with 36 additions and 10 deletions
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46
proxyclient/m1n1/hw/uat.py
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@ -87,22 +87,48 @@ class Page_PTE(Register64):
def set_offset(self, offset):
self.OFFSET = offset >> 14
def access(self, el):
if el == 0:
return [["Xo", "RW", "Xo", "RX"],
["None", "RW", "None", "Ro"]][self.UXN][self.AP]
def access_fw(self, gl=False):
if not self.OS:
return [[
["--", "--", "--", "--"],
["--", "RW", "--", "RW"],
["--", "RX", "--", "--"],
["RX", "R-", "--", "R-"],
], [
["--", "--", "--", "RW"],
["--", "--", "--", "RW"],
["RX", "--", "--", "R-"],
["RX", "RW", "--", "R-"],
]][gl][self.AP][(self.UXN << 1) | self.PXN]
else:
return [
["--", "R-", "-?", "RW"],
["R-", "--", "RW", "RW"],
["--", "--", "--", "--"],
["--", "--", "--", "--"],
][self.AP][(self.UXN << 1) | self.PXN]
return [["RW", "RW", "RX", "RX"],
["RW", "RW", "Ro", "Ro"]][self.PXN][self.AP]
def access_gpu(self):
if not self.OS:
return "--"
return [
["--", "R-", "-W", "RW"],
["--", "--", "--", "R-"],
["R-", "-W", "RW", "--"],
["--", "--", "--", "--"],
][self.AP][(self.UXN << 1) | self.PXN]
def describe(self):
if not self.valid():
return f"<invalid> [{int(self)}:x]"
return f"{self.offset():x} [EL1={self.access(1)}, EL0={self.access(0)}, " \
f"PXN={self.PXN}, UXN={self.UXN}, AP={self.AP}, " \
f"{MemoryAttr(self.AttrIndex).name}, {['Global', 'Local'][self.nG]}, " \
f"Owner={['FW', 'OS'][self.OS]}, AF={self.AF}] ({self.value:#x})"
return (
f"{self.offset():x} [GPU={self.access_gpu()}, EL1={self.access_fw(0)}, GL1={self.access_fw(1)}, " +
f"perm={self.OS}{self.AP:02b}{self.UXN}{self.PXN}, " +
f"{MemoryAttr(self.AttrIndex).name}, {['Global', 'Local'][self.nG]}, " +
f"Owner={['FW', 'OS'][self.OS]}, AF={self.AF}, SH={self.SH}] ({self.value:#x})"
)
class UatAccessor(Reloadable):
def __init__(self, uat, ctx=0):