dar(数据地址寄存器)包含处理器尝试访问的地址，这一行为将引发页面错误。

The dar (Data address Register) contains the address that the processor tried to access, which then caused a page fault.

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在调试信号时，需要查看的一些重要寄存器包括GPR、指令指针(NIP)、机器状态寄存器(MSR)、Trap、数据地址寄存器(DAR)等等。

Important registers to look for when debugging through signals are the GPRs, instruction pointer (NIP), machine state register (MSR), trap, data address register (DAR), and so on.

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在SIGILL的情况中，DAR可能不会提供任何有用的数据，因为这个寄存器在SIGSEGV的情况中就被用来存放故障地址。

In the case of SIGILL, the DAR might not provide useful data, because this register is used to store the fault address in the case of SIGSEGV.

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PPE用载入和存储指令访问主存储器(有效地址空间)，可以在主存储器与内容可以缓存的私有寄存器文件之间移动数据。

The PPE accesses main storage (the effective-address space) with load and store instructions that move data between main storage and a private register file, the contents of which may be cached.

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这里有三项数据：一个是基地址，第二个是索引寄存器，第三个是乘数。

Here, there are three entities: one is the base address, the second is the index register, and the third is the multiplier.

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数据从四个寄存器收购成为可能读地址输入(RA1和RA0)。

Data acquisition from the four registers is made possible by the read address inputs (RA1 and RA0).

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数据从四个寄存器收购成为可能读地址输入(RA1和RA0)。

Data acquisition from the four registers is made possible by the read address inputs (RA1 and RA0).

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