Post-compile instrumentation of object code for generating execution trace data

A system for generating execution trace data for a program, comprising:

• a host machine on which object code for the program is instrumented, wherein an instrumented object code block is associated with a memory location, such that, if the block is executed, data is written to the memory location;
• and
• a target machine on which the object code for the program executes and on which the trace data is generated.

An apparatus for generating execution trace data for a program, the apparatus comprising:

• a trace probe device coupled between a target machine and a host machine, wherein the trace probe device collects a plurality of trace data writes to memory locations on a target machine and transfers the data writes to a host machine, the trace data writes being generated in accordance with instrumented object code for the program.

A system for generating execution trace data for a computer program, comprising:

• a target machine on which object code for the computer program executes and on which the trace data is generated;
• and
• a host machine on which object code for an operating system for the target machine is instrumented, wherein the instrumented operating system object code controls address space switching and context switching.

An apparatus for generating execution trace data for a computer program, the apparatus comprising:

• a trace probe device coupled between a target machine and a host machine, wherein the trace probe device collects a plurality of trace data writes to memory locations on a target machine and transfers the data writes to a host machine, the trace data writes being generated in accordance with instrumented object code for an operating system for the target machine.