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0.13.1

  • standard library
    • runtime: do not put scheduler and GC code in the same section
    • runtime: copy stack scan assembly for GBA
  • boards
    • gameboy-advance: always use ARM mode instead of Thumb mode

0.13.0

  • command line
    • use gdb-multiarch for debugging Cortex-M chips
    • support tinygo run with simavr
    • support LLVM 10
    • support Go 1.14
    • retry 3 times when attempting to do a 1200-baud reset
  • compiler
    • mark the abort function as noreturn
    • fix deferred calls to exported functions
    • add debug info for local variables
    • check for channel size limit
    • refactor coroutine lowering
    • add dereferenceable_or_null attribute to pointer parameters
    • do not perform nil checking when indexing slices and on unsafe.Pointer
    • remove runtime.isnil hack
    • use LLVM builtins for runtime memcpy/memmove/memzero functions
    • implement spec-compliant shifts on negative/overflow
    • support anonymous type asserts
    • track pointer result of string concatenation for GC
    • track PHI nodes for GC
    • add debug info to goroutine start wrappers
    • optimize comparing interface values against nil
    • fix miscompilation when deferring an interface call
    • builder: include picolibc for most baremetal targets
    • builder: run tools (clang, lld) as separate processes
    • builder: use -fshort-enums consistently
    • interp: add support for constant type asserts
    • interp: better support for interface operations
    • interp: include backtrace with error
    • transform: do not track const globals for GC
    • transform: replace panics with source locations
    • transform: fix error in interface lowering pass
    • transform: make coroutine lowering deterministic
    • transform: fix miscompilation in func lowering
  • cgo
    • make -I and -L paths absolute
  • standard library
    • machine: set the USB VID and PID to the manufacturer values
    • machine: correct USB CDC composite descriptors
    • machine: move errors.New calls to globals
    • runtime: support operations on nil maps
    • runtime: fix copy builtin return value on AVR
    • runtime: refactor goroutines
    • runtime: support -scheduler=none on most platforms
    • runtime: run package initialization in the main goroutine
    • runtime: export malloc / free for use from C
    • runtime: add garbage collector that uses an external allocator
    • runtime: scan callee-saved registers while marking the stack
    • runtime: remove recursion from conservative GC
    • runtime: fix blocking select on nil channel
    • runtime/volatile: include ReplaceBits method
    • sync: implement trivial sync.Map
  • targets
    • arm: use -fomit-frame-pointer
    • atmega1284: support this chip for testing purposes
    • atsamd51: make QSPI available on all boards
    • atsamd51: add support for ADC1
    • atsamd51: use new interrupt registration in UART code
    • attiny: clean up pin definitions
    • avr: use the correct RAM start address
    • avr: pass the correct -mmcu flag to the linker
    • avr: add support for tasks scheduler (disabled by default)
    • avr: fix linker problem with overlapping program/data areas
    • nrf: fix typo in pin configuration options
    • nrf: add lib/nrfx/mdk to include dirs
    • nrf52840: implement USB-CDC
    • riscv: implement VirtIO target and add RISC-V integration test
    • riscv: add I2C support for the HiFive1 rev B board
    • stm32: refactor GPIO pin handling
    • stm32: refactor UART code
    • stm32f4: add SPI
    • wasm: support Go 1.14 (breaking previous versions)
    • wasm: support syscall/js.CopyBytesToJS
    • wasm: sync polyfills from Go 1.14.
  • boards
    • arduino-mega2560: add the Arduino Mega 2560
    • clue-alpha: add the Adafruit CLUE Alpha
    • gameboy-advance: enable debugging with GDB
    • particle-argon: add the Particle Argon board
    • particle-boron: add the Particle Boron board
    • particle-xenon: add the Particle Xenon board
    • reelboard: add reelboard-s140v7 SoftDevice target

0.12.0

  • command line
    • add initial FreeBSD support
    • remove getting a serial port in gdb subcommand
    • add support for debugging through JLinkGDBServer
    • fix CGo when cross compiling
    • remove default port check for Digispark as micronucleus communicates directly using HID
    • differentiate between various serial/USB error messages
  • builder
    • improve detection of Clang headers
  • compiler
    • fix assertion on empty interface
    • don't crash when encountering types.Invalid
    • revise defer to use heap allocations when running a variable number of times
    • improve error messages for failed imports
    • improve "function redeclared" error
    • add globaldce pass to start of optimization pipeline
    • add support for debugging globals
    • implement RISC-V CSR operations as intrinsics
    • add support for CGO_ENABLED environment variable
    • do not emit debug info for extern globals (bugfix)
    • add support for interrupts
    • implement maps for arbitrary keys
    • interp: error location for "unknown GEP" error
    • wasm-abi: create temporary allocas in the entry block
  • cgo
    • add support for symbols in #define
    • fix a bug in number tokenization
  • standard library
    • machine: avoid bytes package in USB logic
    • runtime: fix external address declarations
    • runtime: provide implementation for internal/bytealg.IndexByte
  • targets
    • atsamd51: fix volatile usage
    • atsamd51: fix ADC, updating to 12-bits precision
    • atsamd51: refactor SPI pin configuration to only look at pin numbers
    • atsamd51: switch UART to use new pin configuration
    • atsamd51: fix obvious bug in I2C code
    • atsamd51: use only the necessary UART interrupts
    • atsamd51: refactor I2C pin handling to auto-detect pin mode
    • avr: use a garbage collector
    • fe310: use CLINT peripheral for timekeeping
    • fe310: add support for PLIC interrupts
    • fe310: implement UART receive interrupts
    • riscv: support sleeping in QEMU
    • riscv: add bare-bones interrupt support
    • riscv: print exception PC and code
    • wasm: implement memcpy and memset
    • wasm: include wasi-libc
    • wasm: use wasi ABI for basic startup/stdout
  • boards
    • arduino: make avrdude command line compatible with Windows
    • arduino-nano: add this board
    • arduino-nano33: fix UART1 and UART2
    • circuitplay-bluefruit: add this board
    • digispark: add clock speed and pin mappings
    • gameboy-advance: include compiler-rt in build
    • gameboy-advance: implement interrupt handler
    • hifive1b: add support for gdb subcommand
    • pyportal: add this board
    • pyportal: remove manual SPI pin mapping as now handled by default

0.11.0

  • command line
    • add support for QEMU in gdb subcommand
    • use builtin Clang when building statically, dropping the clang-9 dependency
    • search for default serial port on both macOS and Linux
    • windows: support tinygo flash directly by using win32 wmi
  • compiler
    • add location information to the IR checker
    • make reflection sidetables constant globals
    • improve error locations in goroutine lowering
    • interp: improve support for maps with string keys
    • interp: add runtime fallback for mapassign operations
  • standard library
    • machine: add support for SPI.Tx() on play.tinygo.org
    • machine: rename CPU_FREQUENCY to CPUFrequency()
  • targets
    • adafruit-pybadge: add Adafruit Pybadge
    • arduino-nano33: allow simulation on play.tinygo.org
    • arduino-nano33: fix default SPI pin numbers to be D13/D11/D12
    • circuitplay-express: allow simulation on play.tinygo.org
    • hifive1-qemu: add target for testing RISC-V bare metal in QEMU
    • riscv: fix heap corruption due to changes in LLVM 9
    • riscv: add support for compiler-rt
    • qemu: rename to cortex-m-qemu

0.10.0

  • command line
    • halt GDB after flashing with gdb subcommand
    • fix a crash when using -ocd-output
    • add info subcommand
    • add -programmer flag
  • builder
    • macos: use llvm@8 instead of just llvm in paths
    • add linkerscript key to target JSON files
    • write a symbol table when writing out the compiler-rt lib
    • make Clang header detection more robust
    • switch to LLVM 9
  • compiler
    • fix interface miscompilation with reflect
    • fix miscompile of static goroutine calls to closures
    • fix todo: store panic
    • fix incorrect starting value for optimized allocations in a loop
    • optimize coroutines on non-Cortex-M targets
    • fix crash for programs which have heap allocations but never hit the GC
    • add support for async interface calls
    • fix inserting non-const values in a const global
    • interp: improve error reporting
    • interp: implement comparing ptrtoint to 0
  • cgo
    • improve diagnostics
    • implement the constant parser (for #define) as a real parser
    • rename reserved field names such as type
    • avoid "unsafe" imported but not used error
    • include all enums in the CGo Go AST
    • add support for nested structs and unions
    • implement #cgo CFLAGS
  • standard library
    • reflect: add implementation of array alignment
    • runtime: improve scheduler performance when no goroutines are queued
    • runtime: add blocking select
    • runtime: implement interface equality in non-trivial cases
    • runtime: add AdjustTimeOffset to update current time
    • runtime: only implement CountString for required platforms
    • runtime: use MSP/PSP registers for scheduling on Cortex-M
  • targets
    • arm: add system timer registers
    • atmega: add port C GPIO support
    • atsamd21: correct handling of pins >= 32
    • atsamd21: i2s initialization fixes
    • atsamd51: fix clock init code
    • atsamd51: correct initialization for RTC
    • atsamd51: fix pin function selection
    • atsamd51: pin method cleanup
    • atsamd51: allow setting pin mode for each of the SPI pins
    • atsamd51: correct channel init and pin map for ADC based on ItsyBitsy-M4
    • feather-m4: add Adafruit Feather M4 board
    • hifive1b: add support for SPI1
    • hifive1b: fix compiling in simulation
    • linux: fix time on arm32
    • metro-m4: add support for Adafruit Metro M4 Express Airlift board
    • metro-m4: fixes for UART2
    • pinetime-devkit0: add support for the PineTime dev kit
    • x9pro: add support for this smartwatch
    • pca10040-s132v6: add support for SoftDevice
    • pca10056-s140v7: add support for SoftDevice
    • arduino-nano33: added SPI1 connected to NINA-W102 chip on Arduino Nano 33 IOT

0.9.0

  • command line
    • implement 1200-baud UART bootloader reset when flashing boards that support it
    • flash using mass-storage device for boards that support it
    • implement tinygo env
    • add support for Windows (but not yet producing Windows binaries)
    • add Go version to tinygo env
    • update SVD files for up-to-date peripheral interfaces
  • compiler
    • add //go:align pragma
    • fix bug related to type aliases
    • add support for buffered channels
    • remove incorrect reflect optimization
    • implement copying slices in init interpretation
    • add support for constant indices with a named type
    • add support for recursive types like linked lists
    • fix miscompile of function nil panics
    • fix bug related to goroutines
  • standard library
    • machine: do not check for nil slices in SPI.Tx
    • reflectlite: add support for Go 1.13
    • runtime: implement internal/bytealg.CountString
    • sync: properly handle nil New func in sync.Pool
  • targets
    • arduino: fix .bss section initialization
    • fe310: implement Pin.Get
    • gameboy-advance: support directly outputting .gba files
    • samd: reduce code size by avoiding reflection
    • samd21: do not hardcode pin numbers for peripherals
    • stm32f103: avoid issue with time.Sleep less than 200µs

0.8.0

  • command line
    • fix parsing of beta Go versions
    • check the major/minor installed version of Go before compiling
    • validate -target flag better to not panic on an invalid target
  • compiler
    • implement full slice expression: s[:2:4]
    • fix a crash when storing a linked list in an interface
    • fix comparing struct types by making type IDs more unique
    • fix some bugs in IR generation
    • add support for linked lists in reflect data
    • implement []rune to string conversion
    • implement support for go on func values
  • standard library
    • reflect: add support for named types
    • reflect: add support for t.Bits()
    • reflect: add basic support for t.AssignableTo()
    • reflect: implement t.Align()
    • reflect: add support for struct types
    • reflect: fix bug in v.IsNil and v.Pointer for addressable values
    • reflect: implement support for array types
    • reflect: implement t.Comparable()
    • runtime: implement stack-based scheduler
    • runtime: fix bug in the sleep queue of the scheduler
    • runtime: implement memcpy for Cortex-M
    • testing: implement stub testing.B struct
    • testing: add common test logging methods such as Errorf/Fatalf/Printf
  • targets
    • 386: add support for linux/386 syscalls
    • atsamd21: make SPI pins configurable so that multiple SPI ports can be used
    • atsamd21: correct issue with invalid first reading coming from ADC
    • atsamd21: add support for reset-to-bootloader using 1200baud over USB-CDC
    • atsamd21: make pin selection more flexible for peripherals
    • atsamd21: fix minimum delay in time.Sleep
    • atsamd51: fix minimum delay in time.Sleep
    • nrf: improve SPI write-only speed, by making use of double buffering
    • stm32f103: fix SPI frequency selection
    • stm32f103: add machine.Pin.Get method for reading GPIO values
    • stm32f103: allow board specific UART usage
    • nucleo-f103rb: add support for NUCLEO-F103RB board
    • itsybitsy-m4: add support for this board with a SAMD51 family chip
    • cortex-m: add support for arm.SystemReset()
    • gameboy-advance: add initial support for the GameBoy Advance
    • wasm: add //go:wasm-module magic comment to set the wasm module name
    • wasm: add syscall/js.valueSetIndex support
    • wasm: add syscall/js.valueInvoke support

0.7.1

  • targets
    • atsamd21: add support for the -port flag in the flash subcommand

0.7.0

  • command line
    • try more locations to find Clang built-in headers
    • add support for tinygo test
    • build current directory if no package is specified
    • support custom .json target spec with -target flag
    • use zversion.go to detect version of GOROOT version
    • make initial heap size configurable for some targets (currently WebAssembly only)
  • cgo
    • add support for bitfields using generated getters and setters
    • add support for anonymous structs
  • compiler
    • show an error instead of panicking on duplicate function definitions
    • allow packages like github.com/tinygo-org/tinygo/src/* by aliasing it
    • remove //go:volatile support
      It has been replaced with the runtime/volatile package.
    • allow poiners in map keys
    • support non-constant syscall numbers
    • implement non-blocking selects
    • add support for the -tags flag
    • add support for string to []rune conversion
    • implement a portable conservative garbage collector (with support for wasm)
    • add the //go:noinline pragma
  • standard library
    • os: add os.Exit and syscall.Exit
    • os: add several stubs
    • runtime: fix heap corruption in conservative GC
    • runtime: add support for math intrinsics where supported, massively speeding up some benchmarks
    • testing: add basic support for testing
  • targets
    • add support for a generic target that calls __tinygo_* functions for peripheral access
    • arduino-nano33: add support for this board
    • hifive1: add support for this RISC-V board
    • reelboard: add e-paper pins
    • reelboard: add PowerSupplyActive to enable voltage for on-board devices
    • wasm: put the stack at the start of linear memory, to detect stack overflows

0.6.0

  • command line
    • some portability improvements
    • make $GOROOT more robust and configurable
    • check for Clang at the Homebrew install location as fallback
  • compiler driver
    • support multiple variations of LLVM commands, for non-Debian distributions
  • compiler
    • improve code quality in multiple ways
    • make panic configurable, adding trap on panic
    • refactor many internal parts of the compiler
    • print all errors encountered during compilation
    • implement calling function values of a named type
    • implement returning values from blocking functions
    • allow larger-than-int values to be sent across a channel
    • implement complex arithmetic
    • improve hashmap support
    • add debuginfo for function arguments
    • insert nil checks on stores (increasing code size)
    • implement volatile operations as compiler builtins
    • add //go:inline pragma
    • add build tags for the Go stdlib version
  • cgo
    • implement char, enum and void* types
    • support #include for builtin headers
    • improve typedef/struct/enum support
    • only include symbols that are necessary, for broader support
    • mark external function args as nocapture
    • implement support for some #define constants
    • implement support for multiple CGo files in a single package
  • standard library
    • machine: remove microbit matrix (moved to drivers repository)
    • machine: refactor pins to use Pin type instead of GPIO
    • runtime: print more interface types on panic, including error
  • targets
    • arm: print an error on HardFault (including stack overflows)
    • atsamd21: fix a bug in the ADC peripheral
    • atsamd21: add support for I2S
    • feather-m0: add support for this board
    • nrf51: fix a bug in I2C
    • stm32f103xx: fix a bug in I2C
    • syscall: implement Exit on unix
    • trinket-m0: add support for this board
    • wasm: make main example smaller
    • wasm: don't cache wasm file in the server, for ease of debugging
    • wasm: work around bug #41508 that caused a deadlock while linking
    • wasm: add support for js.FuncOf

0.5.0

  • compiler driver
    • use wasm-ld instead of wasm-ld-8 on macOS
    • drop dependency on llvm-ar
    • fix linker script includes when running outside TINYGOROOT
  • compiler
    • switch to LLVM 8
    • add support for the Go 1.12 standard library (Go 1.11 is still supported)
    • work around lack of escape analysis due to nil checks
    • implement casting named structs and pointers to them
    • fix int casting to use the source signedness
    • fix some bugs around make([]T, …) with uncommon index types
    • some other optimizations
    • support interface asserts in interp for "math/rand" support
    • resolve all func value targets at compile time (wasm-only at the moment)
  • cgo
    • improve diagnostics
    • implement C struct, union, and arrays
    • fix CGo-related crash in libclang
    • implement C.struct_ types
  • targets
    • all baremetal: pretend to be linux/arm instead of js/wasm
    • avr: improve uintptr support
    • cortexm: implement memmove intrinsic generated by LLVM
    • cortexm: use the lld linker instead of arm-none-eabi-ld
    • darwin: use custom syscall package that links to libSystem.dylib
    • microbit: add blink example
    • samd21: support I2C1
    • samd21: machine/atsamd21: correct pad/pin handling when using both UART and USBCDC interfaces at same time
    • stm32f4discovery: add support for this board
    • wasm: support async func values
    • wasm: improve documentation and add extra example

0.4.1

  • compiler
    • fix objcopy replacement to include the .data section in the firmware image
    • use llvm-ar-7 on Linux to fix the Docker image

0.4.0

  • compiler
    • switch to the hardfloat ABI on ARM, which is more widely used
    • avoid a dependency on objcopy (arm-none-eabi-objcopy etc.)
    • fix a bug in make([]T, n) where n is 64-bits on a 32-bit platform
    • adapt to a change in the AVR backend in LLVM 8
    • directly support the .uf2 firmware format as used on Adafruit boards
    • fix a bug when calling panic() at init time outside of the main package
    • implement nil checks, which results in a ~5% increase in code size
    • inline slice bounds checking, which results in a ~1% decrease in code size
  • targets
    • samd21: fix a bug in port B pins
    • samd21: implement SPI peripheral
    • samd21: implement ADC peripheral
    • stm32: fix a bug in timekeeping
    • wasm: fix a bug in wasm_exec.js that caused corruption in linear memory when running on Node.js.

0.3.0

  • compiler
    • remove old -initinterp flag
    • add support for macOS
  • cgo
    • add support for bool/float/complex types
  • standard library
    • device/arm: add support to disable/enable hardware interrupts
    • machine: add CPU frequency for nrf-based boards
    • syscall: add support for darwin/amd64
  • targets
    • circuitplay_express: add support for this board
    • microbit: add regular pin constants
    • samd21: fix time function for goroutine support
    • samd21: add support for USB-CDC (serial over USB)
    • samd21: add support for pins in port B
    • samd21: add support for pullup and pulldown pins
    • wasm: add support for Safari in example

0.2.0

  • command line
    • add version subcommand
  • compiler
    • fix a bug in floating point comparisons with NaN values
    • fix a bug when calling panic in package initialization code
    • add support for comparing complex64 and complex128
  • cgo
    • add support for external globals
    • add support for pointers and function pointers
  • standard library
    • fmt: initial support, fmt.Println works
    • math: support for most/all functions
    • os: initial support (only stdin/stdout/stderr)
    • reflect: initial support
    • syscall: add support for amd64, arm, and arm64