Performance monitoring of virtualized instructions

A system for performance assessment of execution of one or more non-native instructions, the system comprising:

• a computing system having a processor and a memory, the processor capable of executing instructions written in a native instruction set architecture, the one or more non-native instructions incapable of native execution on the processor, wherein the computing system is configured to capture one or more statistics regarding native execution on the computing system during virtualized execution of the one or more non-native instructions, wherein emulated execution of the one or more non-native instructions simulates execution of a second computing system having a second native instruction set architecture different from and incompatible with the native instruction set architecture;
• during emulated execution of non-native program code including non-native instructions:
• maintaining a program flow history in the computing system representing a flow of program execution of the non-native program code, the program flow history including a jump storage captured from a state of a jump table defined in the non-native instruction set architecture and including a listing of non-native jump instructions for which execution is emulated in the computing system;
• a jump table residing in the memory and configured to store a listing of non-native jump instructions for which execution is emulated in the computing system;
• a post-execution component executing on the computing system and configured to reconstruct an instruction trace based on the program flow history and correlate the one or more statistics to a program flow history derived at least in part from the jump table to determine performance of the computing system in executing one or more non-native instructions included in segments of the instruction trace between each of the non-native jump instructions.

A computer-readable storage device storing computer-executable instructions thereon, which, when executed, cause a computing system to perform a method of assessing performance of one or more non-native instructions executing on a computing system having a native instruction set architecture, wherein emulated execution of the one or more non-native instructions simulates execution of a second computing system having a second native instruction set architecture different from and incompatible with the native instruction set architecture, the method comprising:

• during emulated execution of non-native program code including non-native instructions:
• maintaining a program flow history in the computing system representing a flow of program execution of the non-native program code, the program flow history including a jump storage captured from a state of a jump table defined in the non-native instruction set architecture and including a listing of non-native jump instructions for which execution is emulated in the computing system;
• and capturing one or more statistics regarding native execution on the computing system during execution of the non-native program code;
• reconstructing an instruction trace based on the program flow history;
• and correlating the one or more statistics to the program flow history to determine performance of the computing system in executing one or more non-native instructions included in segments of the instruction trace between each of the non-native jump instructions.