v4.0.0-beta2

• Full editing: patch instructions, make code/data, undefine, reanalyze
• Rendering now supports immediate updates: no internal rebuilds/resync needed
• x86 encoder + assembler
• Reworked type system, function signatures with unknown args/ret
• MSVC RTTI analyzer (experimental)
• PE Rich Header parsing & compiler classification
• Lots of fixes and stability improvements

Full Changelog: https://github.com/redasm-dev/redasm/blob/v4.0.0-beta2/CHANGELOG.md

v4.0.0-beta1

The first public release since 2021.
REDasm has been completely rewritten with a brand new engine written in C and clean Qt6 GUI.

This is a BETA, expect rough edges, please report crashes, incorrect disassembly or any kind of bugs you encounter.

Highlights

• core total rewrite in C
• RDIL intermediate language for binary lifting
• save and load the analysis session
• the analysis database can be now exported for external tools inspection
• cross platform: redasm is now continuously tested on Windows and Linux
• renderer is now unicode aware
• GPG signed releases straight from CI pipeline

Loaders

• DOS COM
• all MZ family (MZ, NE, LE/LX with dedicated VxD device driver analysis)
• PE
• ELF
• Playstation 1 executables (PSX-EXE) and BIOS
• XBE (original XBox executables)

Processors

• x86 family (16/32/64-bit)
• MIPS32 (BE/LE) with delay slot handling and register tracking
• ARM, Thumb, AArch64

Analysis

• function noret propagation
• VB5/6 detection and structure analysis (eg. event handlers)
• autorenamer in finalization pass
• wide string detection (opt-in by loader plugin developers)

Known limitations for beta1

• macOS is not yet supported because I don't own that hardware and I cannot test it
• it's not possible to patch bytes or reassemble instructions
• .map exporter is not available
• currently stripped ELF binaries have limited test coverage

Nightly Build (2026-08-23)

core:

• 08fef51 feat(RDScratchBuffer): added rd_scratch_each macro
• 4596c69 fix: prefer u8 for overlay flags
• 055e55e feat: improved RDBuffer I/O performance and reliability
• c8cbd57 feat(hmap): improved and fixed implementation
• 49ce528 feat!: reworked schema for big performance improvements
• 198c354 feat!: extended comment support
• 54607d1 fix(Renderer): allow empty lines
• 2b05161 feat(RDScratchBuffer): extended APIs
• e447750 feat!: instance_size field to RDProcessorPlugin and RDLoaderPlugin
• 6af558b chore: disable jobs on forked repos
• ab05526 feat(RDOperand): added RD_OP_STUB
• fce2843 fix: byte-sized autogenerated names spitting
• 6ce2560 fix: relax rd_integral_from_size failure
• 029d31d feat: NULL check rd_i_typedef_find
• 8c8b383 fix(RDSurfaceGraph): major performance regression since BETA1
• f7381d9 fix: HaikuOS support
• fc0aaef fix(RDIL): relax invalid operands
• b9d6b3d fix: inserter when > 1 analyzers are available
• 8dd5896 feat!: register handling rewrite
• 4ccf1e3 feat: added RDProcessorPlugin.setup, refactoring

redasm:

• df78de4 fix: reanalyze now invalidates current surface
• 3ece424 fix(PatchDialog): resize to content
• 54e60d7 feat(SurfaceGraph): jump_to_ep relies on rd_get_entry_point
• 967aed9 fix(SurfaceGraph): always ask RDGraph
• c97db8a fix(SurfaceGraph): do object equality, not pointer one
• f063f1c chore: added CHANGELOG.md
• 8e935aa feat: decouple name/function relationships
• d52a734 fix(FunctionsModel): follow core notifications, don't brute force
• db5f345 fix: hex character casing
• 006be2f chore: reworked readme
• 39423de fix: prefer QPlainTextEdit for logging
• d619b92 fix(ContextView): column resizing
• 557677a fix: simplified font settings
• fd3c98b feat(surfacerenderer): optimized rendering pipeline
• 2f06b88 feat: sync to core changes
• 3777147 chore: disallow jobs on forks
• 06e33de feat: sync to core changes
• 9dc2782 chore: refactoring
• 65cfa19 feat(SurfaceGraph): don't flood renderer on mouse-move and mouse-click
• 113245e fix: local actions promoted to application wide

loaders:

• c5dd6ec feat: ZX Spectrum loader plugin (WIP)
• 2ad0359 feat(SNA): initialize z80 registers
• ff48396 feat(SNA): improved mapping, load 48k ROM definitions
• f563503 feat(SNA): organize code for various from ROM sizes
• cd97484 feat(SNA): report EPs that lives inside ROM segment
• 9811ebf feat(SNA): label stack
• 8dbae5e feat(SNA): better validation
• cc25bd6 fix(SNA): loading & mapping
• 33baa84 fix(SNA): input mapping
• 787f5da fix(ZXSpectrum): updated CMakeLists.txt
• 1081a95 feat(ZXSpectrum): added Z80 format v1/v2/v3
• a8e29ee feat(Z80): initialize registers
• 7fea983 feat(ZXSpectrum): added TAP format
• f60d375 feat!: prefer instance_size instead of custom allocators
• bc4d077 chore: disable jobs on forked repos
• ee9a478 feat: initial support for NES roms
• 06cca28 feat(NES): map NES memory
• 4c20018 feat(ELF): detect 'xtensa' architecture
• 823b6b7 fix(PE): pdb file name reporting and labelling
• e165535 feat(PE): parse TLS directory

processors:

• b637226 feat(x86): completed encoder
• 26a4bc6 feat(x86): use rd_format_to instead of RD_LOG_FAIL_TO
• 42d5a55 chore: lower cmake requirements to 3.20
• 17f04fc fix(x86): split decode/emulate interrupt hooks
• e0e5e8e feat: removed 'int_size' field usage
• 255ab52 feat: Z80 processor plugin
• 5b3cba6 fix(z80): addressing is 16 bit wide
• b223519 feat(Z80): track registers, generate xrefs
• 089eea6 fix(z80): don't label 0 immediate constants
• 8bc9799 chore: disable jobs on forked repos
• 329a54c chore: bump to capstone 6.0.0-Alpha10
• 9ec4bfa chore: refactoring
• 719ff26 feat(mos6502): initial implementation
• 918fb88 feat(MOS6502): improved support
• f3974dc feat(MOS6502): analyze DISPL operands
• 22dee5e feat(MOS6502): autotype references
• 077aa58 feat(capstonebundle): conditional register processor plugins
• 346abce feat(Xtensa): added support, keep it disabled for now
• 17a6ba3 feat!: sync to core changes
• 467ab18 chore: removed unused function

commands:

• 1674f4f feat: explicit module version
• ca93d41 chore: moved install step from workspace
• f3eedd3 chore: lower cmake requirements to 3.20
• 40f7f2b feat: decouple name/function relationships
• 8fe19a6 chore: disable jobs on forked repos

analyzers:

• 9dd5d64 feat: added 'compilers' analyzer module
• 332fa68 feat(rtti): better vtable typing
• 3be61b4 feat(rtti): deeper class detail propagation
• 9dc63d8 fix(msvc_rtti): wrong typedescriptor, unchecked by default
• cb19b00 chore(VB): refactoring and match KB names
• 17910fb feat: mark MSVC RTTI plugin as experimental
• 2552479 chore: lower cmake requirements to 3.20
• 9b36a99 feat: decouple name/function relationships
• 614fa20 fix: hex character casing
• feb53c0 chore: disable jobs on forked repos
• 7695d63 chore(compiler): reorganized source tree
• c05f9e5 feat(compiler): added MSVC exception handling analyzer
• e28bb8d feat(compiler): scan for FuncInfo structs

kb:

• 6794839 chore: moved install step from workspace
• 0e7b8de feat(coredll): added libc functions dependency
• 59d43e1 feat(win32): added MFC ordinals
• f0dced4 feat(PE): added PE_LOAD_CONFIG_DIRECTORY
• c851244 feat(compiler): added MSVC RTTI types
• ae2a2b0 feat: reorganized and renamed VB related types and dependencies
• 9df78b1 chore: lower cmake requirements to 3.20
• f6ee872 feat(PE): removed IMAGE_DOS_HEADER
• 29ba576 feat!: reworked and simplified KB format
• 0c8c1f0 feat: sync to type system changes
• 2905057 feat(PSX): added missing bioscall B(0x5b)
• 54ed811 feat(ZX Spectrum): added 48k ROM definitions (WIP)
• 42a4676 feat(zxspectrum): categorized and extended ROM 48k routines
• a22181a feat(ZXSpectrum): full 48k ROM coverage
• b9c9877 feat(win32): added ws2_32.dll ordinals
• 6eb702b feat(compiler): added MSVC exception handling types
• 5d8a2fe feat(PE): added TLS directory definitions
• 2e18573 feat: updated PE and MSVC EH implementations

REDasm 3.0 BETA 5

REDasm

• Fixed Dialog plugins implementation (QtDialogUI)
• Improved QHexView integration (still WIP)
• Code cleanup
• Minor Fixes

LibREDasm

• Redesigned internal address space representation (for performance)
• Redesigned and simplified Document API
• Improved surface rendering performance
• Improved analysis accuracy and speed
• Fixed Control Flow Graph generation
• Separate comments from autocomments
• Expanded Type System and its APIs
• Drastically reduced memory usage
• Improved string detection performance
• Analyzers can now be hidden from plugins
• Code cleanup
• Minor Fixes

Plugins

• Implemented DEX Loader
• Implemented Dalvik Assembler
• ELF: Fixed segmentation fault

REDasm 3.0 BETA 4

• KDDockWidgets integration
• Removed IDA Like animation for performance and stability
• Added analysis Dashboard (still work in progress)
• Fixed arrow rendering in listing mode
• PE: Fixed classification, detect MinGW
• PE: Demangle Imports
• MIPS: Decode COP instructions (some are still missing)
• MIPS: Added more support for macro instructions
• MIPS: Initial support for binary lifting
• MIPS: Added MIPS64
• ARM: Improved support
• Added Jump/Call Table Support (available only for x86 atm)
• x86: Added prologue analysis for x86_64 too
• Improved XBox 1 Executable analysis
• Improved analysis reliability
• Improved listing rendering for readability
• Reimplemented hex conversion for maximum performance
• Fixed Binary loader
• Added more unit tests
• Minor fixes

REDasm 3.0 BETA 3

• Improved string detection
• Implemented ESP32 ULP Assembler Plugin
• Improved Listing appearance
• MIPS: Added macro instructions analysis in order to generate cross references
• Merged Capstone based plugins (only ARM64 and ARM atm)
• Disassembler Engine's fine tuning
• API Refactoring
• Restored VB Decompiler
• Added and Restored unit tests
• Minor Fixes and Regression Fixes

REDasm 3.0 BETA 2

• Reimplemented cross references analysis
• Implemented Tensilica Xtensa and ESP32 support
• Added support for Xtensa ELF executables
• Implemented COFF plugin
• Improved build system
• Restored RDCommandPlugin (WIP)
• Fixed UI related APIs
• Minor fixes

REDasm 3.0 BETA 1

• New User Interface
• Brand new Disassembler Engine
• Plugin interface
• Plain C API
• C++17 Core
• Support for x86 and x86_64, ARM64 and MIPS architectures
• Support for PE, ELF, PSX and XBOX1 executables
• 32 Bit MSVC RTTI support

REDasm 2.1.1 Fix

Added missing include for the legacy version

REDasm 2.1.1

(Quality Release)

• Reimplemented GotoModel.
• Fixed crashes and undefined behaviors on ARM.
• Fixed out-of-buffer access.
• Fixed Goto Action.
• Removed some u64 <-> size_t silent conversions.
• ListingItemModel: Fixed invalid memory access.
• DisassemblerTextView: Fixed text selection.
• 32-bit OS support (WIP).
• Minor fixes.