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Träfflista för sökning "WFRF:(Samuelsson David) srt2:(1994)"

Sökning: WFRF:(Samuelsson David) > (1994)

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1.
  • Magnusson, Peter S., et al. (författare)
  • A Compact Intermediate Format for SimICS
  • 1994. - 1
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • Instruction set architecture (ISA) simulators are an increasingly popular class of tools for both research and commercial purposes. Common applications include trace generation, program development, and compatibility support. A major concern with ISA simulators is performance and memory overhead. A common technique for achieving good performance is to use threaded code, which involves translating the target object code to an intermediate format which is subsequently interpreted. We describe such an internal format, which we call the 64-bit format, that is compact and meets a range of requirements in terms of flexibility and simplicity. We show how a simulator using this format can be implemented efficiently by taking advantage of extensions to the C language supported by the GNU C compilers. We have used the format to write the core interpreter in SimICS, a system level multiprocessor simulator that supports the Motorola 88110 and the SPARC V8 instruction sets.
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2.
  • Samuelsson, David (författare)
  • System Level Interpretation of the SPARC V8 Instruction Set Architecture
  • 1994. - 1
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • An implementation of a system level interpreter of the SPARC V8 instruction set architecture is described. The goal is that the simulator, SimICS, should be sufficiently accurate to run an operating system on top of the simulator. The simulation is performed by direct threaded interpretation of an intermediate code. Simulation of condition codes is performed quickly and can handle all combinations of condition codes. The condition codes are evaluated lazily and unnecessary computations are avoided. Access to registers in a register window is as efficient as in a flat register file. To optimize instructions specialized variants are identified that can be executed faster. SimICS is tested using a comprehensive test suite. The suite exercises the instruction set using interesting combinations of input parameters and operands and compares the result to a reference implementation. A validation of the results is performed with SPEC benchmarks. The result is a stable and correct system level interpreter of SPARC Architecture Version 8 that runs 15 times slower than the real hardware.
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  • Resultat 1-2 av 2
Typ av publikation
rapport (2)
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övrigt vetenskapligt/konstnärligt (2)
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Samuelsson, David (2)
Magnusson, Peter S (1)
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Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
År
1994 (2)Ta bort avgränsningen

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