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Release 0.13.0
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@aykevl aykevl released this 14 Apr 17:52
v0.13.0
efdb2e8

This new release adds support for Go 1.14 and LLVM 10. It fixes a number of compiler and runtime bugs and also has had some significant refactoring in goroutine support. Perhaps most visible is that USB-CDC now works on all major OSes (Windows, macOS, and Linux) so that you can flash Adafruit boards without manually entering the bootloader.

This release adds support for five new boards: the Adafruit CLUE, Arduino Mega 2560, and the Particle Argon, Boron and Xenon.

Note that this release requires Go 1.14 to support WebAssembly.

Here is a detailed list of changes with this release:

  • 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
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