ARMSim# HOME :: FEATURES        


Full ARM7 TDMI simulation engine

  • Support of Thumb instructions.
  • Support of Single-Stepping into/over code.
  • Run at full speed, stopping either at program termination or at breakpoint or at user command.
  • Restarting simulation or Reloading/Assembling from original files.
  • Support of all exception modes.
  • Support of all banked registers and SCPSR registers.
  • FIQ/IRQ fully simulated and can be invoked by plugins.
  • Instruction counting and Cycle counting is provided.

Docking Windows Interface

  • Each view can be docked to any window edge, or be left as a floating window.
  • Views can be hidden or grouped into a tabbed window.
  • Views can hide when not needed and be activated by mouse activity.
  • Window states are saved on application exit

Built-in ARM Assembler/Linker

  • Source files are assembled according to the GNU/ARM asm specification.
  • Linking to multiple source files and object/library files is supported.
  • Original source code with address/opcodes displayed to user.
  • Syntax and Semantic errors are displayed in the CodeView and highlighted for the user to review and fix.
  • Errors are also listed in the ConsoleView. Double-clicking the error brings the offending source file
    into focus and centers on the offending line.
  • Projects consisting of multiple source files and object files can be defined.
  • Object files and Library files are supported.

Configurable L1 Cache simulation and reporting

  • The user can define an L1 cache for simulation and visualization.
  • Direct Mapped, Fully Associative and Set Associative caches can be configured.
  • Cache size, block size and replacement methods can be defined.
  • Separate or Unified caches can be defined.
  • Visualization of the cache contents are available via the user interface.
  • Cache statistics are maintained and available to the user.

Built-in script engine for automated testing

  • The ARMSim# can be run in a batch-mode environment.
  • The user can write a "script" to control the simulator.
  • Full access to the simulator allows the script to automate test a large selection of
    assembly code submissions.
  • The target code submission can be tested under a large number of test conditions.
  • Results can be written to any destination data sink.
  • Example scripts demonstrate using Excel as a data sink for test results.

VFP (Vector Floating Point) simulation

  • Full VFP simulation via the VFP Coprocessor.
  • Double(64 bit) and Single(32 bit) floating point numbers supported.
  • Floating point registers can be inspected via the RegistersView.

Instruction extensions

  • New instructions can be defined and mapped to undefined opcodes of the ARM processor.
  • Instruction behavior is defined in an ARMSim# plugin.
  • The ARM simulation engine calls the plugin assembly when the instruction is encountered.
  • Instruction Mnemonic can be added to Assembler parsing tables so new instructions
    can be assembled.

Memory Mapped IO extensions

  • Custom behavior for reads and writes to the memory map can be defined.
  • Read/Write behavior is defined in an ARMSim# plugin.
  • The ARM simulation engine calls the plugin assembly when the memory mapped area
    is accessed.
  • Allows simulation of hardware such as Interrupt controllers, IO controllers, Timers
    Buttons etc.

User interface extensions

  • Users can request additional areas of the User Interface for custom use.
  • User interface behavior is defined in an ARMSim# plugin
  • This can be used with the Instruction Extension and the Memory Mapped IO extension
    to visualize hardware devices.
ARMSim# has been developed by members of the Department of Computer Science at the University of Victoria, in Victoria, British Columbia, Canada. It is distributed free for academic use. For commercial use, please contact the authors.