本文整理汇总了Python中register.Register.fl_index方法的典型用法代码示例。如果您正苦于以下问题：Python Register.fl_index方法的具体用法？Python Register.fl_index怎么用？Python Register.fl_index使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类register.Register的用法示例。
在下文中一共展示了Register.fl_index方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: get_flat_mappings
# 需要导入模块: from register import Register [as 别名]
# 或者: from register.Register import fl_index [as 别名]
def get_flat_mappings(domain, mmu):
"""Walk some LPAE IOMMU page tables by iterating over all possible
page table entries at each level. Returns a dictionary of the
form: {(virt_start, virt_end): LeafMapping object, ...}
"""
mappings = {}
n = mmu.input_addr_split
virt_r = Register(fl_index=(n + 26, 30),
sl_index=(29, 21),
tl_index=(20, 12),
page_index=(11, 0))
for fl_index in range(0, NUM_FL_PTE):
virt_r.zero()
virt_r.fl_index = fl_index
info1 = mmu.translate_first_level(virt_r)
if info1 is None:
continue
if info1.leaf:
virt = virt_r.value
mappings[virt, virt + info1.page_size] = info1
continue
# this is a table. do the second-level lookup:
for sl_index in range(0, NUM_SL_PTE):
virt_r.sl_index = sl_index
info2 = mmu.translate_second_level(virt_r, info1.next_table_addr)
if info2 is None:
continue
if info2.leaf:
virt = virt_r.value
mappings[virt, virt + info2.page_size] = info2
continue
# this is a table. do the third-level lookup:
for tl_index in range(0, NUM_TL_PTE):
virt_r.tl_index = tl_index
info3 = mmu.translate_third_level(virt_r, info2.next_table_addr)
if info3 is None:
continue
if not info3.leaf:
raise Exception('Non-leaf third-level PTE???')
virt = virt_r.value
mappings[virt, virt + info3.page_size] = info3
return OrderedDict(sorted(mappings.items()))