v.0.5.5

v.0.5.5

• Seperated Simulation Engine (engine/) from CLI (debugger/)
  • Might create a statically linked library out of engine/,
    so that the core can be reused in different projects.

v.0.5.4

v.0.5.4

• Added first Submodule for the Analyzer: Static SFR Analysis

  • This submodule explores special function registers in disassembly

  • once an address to a special function register has been detected
    by the module, an annotation will be created with its corresponding name

  • example: out 0x3f, r1 ; SREG

• Minor refactor of timer8.

• New Debugcommand: xeb - examine EEPROM as bitmap

• Cleanup: unused Headers, unused variables

v.0.5.3

v.0.5.3 - 2020-01-23

• Added: Instruction Decomposer - Stage 1 of the Analyzer Pipeline

  • decomposes AVR Opcodes into its components

• Extended Analyzer Pipeline:

  • Stage 0: Decoder (decodes binaries, extracts opcodes)
  • Stage 1: Decomposer (decomposes opcodes into its operands)
  • Stage 2: Disassembler (disassembles opcodes into mnemonics)
  • Stage 3: Analyzer (performs static analysis on disassembly)

• Timer0: Minor work on Prescaler.

• Added: EEPROM Write-Only Mode

  • Now supporting all modes of EEPROM programming

• Added: Opcode view in disassembly.

v.0.5.2

v.0.5.2 - 2020-01-13

• This update reduces heap allocations for an overall better memory performance

• Further improvements regarding memory consumption are coming soon

• Now using sstream in mnemonics generator and debugprinter

  • avoiding unnecessary heap allocations

• Added: stringstream collection (sstream.c, sstream.h)

  • will be replacing queue collection (queue.c, queue.h)

v.0.5.1

v.0.5.1 - 2020-01-10

• Systemprinter refactored

  • Rename sytemprinter.* to debugprinter.*
  • Seperated printer functionality into six files:
    • gpnl_printer.* (printer for the gpr panel)
    • spnl_printer.* (printer for the sreg panel)
    • fpnl_printer.* (printer for the flash panel)
    • dpnl_printer.* (printer for the data panel)
    • epnl_printer.* (printer for the eeprom panel)
    • rpnl_printer.* (printer for the right panel)
  • functionality stayed the same

• Added credits for the architecture diagram.

• Fixed comments for push/pop mnemonic.

v.0.5.0

v.0.5.0 - 2020-12-31

• Added: Analyzer Module.

  • The Analyzer Module consists of multiple (future) submodules.
  • Each submodule will be covering exactly one aspect of static code analysis.
  • Planned submodules:
    • ISR analysis (explore details about ISRs in your code)
    • SFR analysis (annotate addresses which target special function registers)
    • Function analysis (analyse function calls and maybe even their arguments/return-values)
    • many more...
  • The analyzer is a work in progress

• Performance: Reached 17 MHz execution speed. It is now possible to simulate default Arduino in realtime.

• Refactor of toplevel structures

  • table_t class is now only for user-defined entries like breakpoints, etc.
  • system_t class does not contain table_t class anymore.
  • report_t class is the report of the analyzer after decoding and disassembling hexfile.

• Displaying hexadecimal addresses instead of line numbers in sidepanel.

• Table commands (like break, unbreak) are now requiring a hexadecimal address

• Added: Diagram of the analyzer dataflow

• Added: New screenshot

• DebugWindow Refactor (II)

  • panel properties are now calculated seperately in <g,s,f,d,e,o,r> pnl_ctor

v.0.4.5

v.0.4.5 - 2020-12-21

• DebugWindow refactored.

  • No use of generic panels in DebugWindow anymore
  • Created subdirectory: src/cli/util/ and include/cli/util
  • Panel class is now stored in cli/util/
  • Created individual panels (gpnl_t, etc.) in cli/debug/
  • gpnl_t, spnl_t, fpnl_t, dpnl_t, epnl_t, opnl_t, rpnl_t are extending panel_t (cli/util/panel.h)
  • Created _win_properties which holds data related to the window (WINDOW*) state (height, width, y, x)
  • struct _properties extends struct _win_properties (adding page properties)
  • Panels are now initialized by struct _properties*
  • Prompt is now initialized by struct _win_properties* (prompt has no page properties)
  • Right now extending panel_t class has no real benefits, since all individual panels are the same,
    but this will change in the future.

• Added: 'cc' debugcommand. Create comments in disassembly with 'cc '

• Statusregister can be read/written now by writing to its dataspace address (0x005f)

v.0.4.4

v.0.4.4 - 2020-12-01

• Major Performance Enhancement

  • 56% better runtime performance
    • before: 7.250.000 Cycles per second (7,25 MHz)
    • after: 12.800.000 Cycles per second (12,8 MHz)
  • Tested on an Intel Core i5. So actual execution speed may differ.
  • Goal: atleast 20 MHz

• Fixed some issues in the Makefile

v.0.4.3

v.0.4.3 - 2020-11-17

• Added new Debugcommand: jc (jump cycles)

  • Fast forwarding simulation without the need for setting breakpoints
  • Useful when waiting for an event in an endless loop, like EEPROM Ready or a Timer Overflow.

• Bugfix: Timer increments now, even when executing illegal opcode.

• Timer Interrupts are now handled in TIFR0 and TIMSK0, too.

v.0.4.2

v.0.4.2 - 2020-11-13

• Added two functions to system_t:

  • sys_set_sfr(system_t*, const uint16_t, const int)
  • sys_clear_sfr(system_t*, const uint16_t, const int)

• The first 32 registers in IO-Space are now set/cleared by writing single bits when using sbi, cbi

• Headless Mode is now ignoring EEPROM values equals to 0xff, in order to minimize output

• Bugfix: Flag clearing in TIFR0

• Added new testfile: kmp.asm (KMP Pattern Matching for M328P)