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MICROPROCESSOR WITH BOOT INDICATOR THAT INDICATES A BOOT ISA OF THE MICROPROCESSOR AS EITHER THE X86 ISA OR THE ARM ISA
MICROPROCESSOR WITH BOOT INDICATOR THAT INDICATES A BOOT ISA OF THE MICROPROCESSOR AS EITHER THE X86 ISA OR THE ARM ISA
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机译:具有引导指示器的微处理器,该指示器指示X86 ISA或ARM ISA上的微处理器的引导ISA
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摘要
A microprocessor includes a plurality of registers that holds an architectural state of the microprocessor and an indicator that indicates a boot instruction set architecture (ISA) of the microprocessor as either the x86 ISA or the Advanced RISC Machines (ARM) ISA. The microprocessor also includes a hardware instruction translator that translates x86 ISA instructions and ARM ISA instructions into microinstructions. The hardware instruction translator translates, as instructions of the boot ISA, the initial ISA instructions that the microprocessor fetches from architectural memory space after receiving a reset signal. The microprocessor also includes an execution pipeline, coupled to the hardware instruction translator. The execution pipeline executes the microinstructions to generate results defined by the x86 ISA and ARM ISA instructions. In response to the reset signal, the microprocessor initializes its architectural state in the plurality of registers as defined by the boot ISA prior to fetching the initial ISA instructions.
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