lib: rust_support: fix mutex_t wrapper impl

Testing aosp/2994822 immediately causes a panic because
mutex_acquire and mutex_release in the trusty kernel returns
NO_ERROR (0) on success but the rust code asserts that the
response is non zero.

Test: with appropriate patches applied, build.py generic-x86_64-test
Bug: 298705967
Change-Id: I16f4371640f4b5fa7fa77e6775df5f3ce38765fa
1 file changed
tree: 7d975972f074d9a3a556e836aefa9063318fa885
  1. app/
  2. arch/
  3. dev/
  4. external/
  5. hosttests/
  6. include/
  7. kernel/
  8. lib/
  9. make/
  10. platform/
  11. target/
  12. tools/
  13. top/
  14. .clang-format
  15. .gitignore
  16. build-config-kerneltests
  17. engine.mk
  18. kerneltests-inc.mk
  19. LICENSE
  20. lk_inc.mk.example
  21. makefile
  22. PREUPLOAD.cfg
  23. README.md
  24. rustfmt.toml
README.md

LK

The LK embedded kernel. An SMP-aware kernel designed for small systems.

See https://github.com/littlekernel/lk for the latest version.

See https://github.com/littlekernel/lk/wiki for documentation.

Builds

Build Status

To build and test for ARM on linux

  1. install or build qemu. v2.4 and above is recommended.
  2. install gcc for embedded arm (see note 1)
  3. run scripts/do-qemuarm (from the lk directory)
  4. you should see ‘welcome to lk/MP’

This will get you a interactive prompt into LK which is running in qemu arm machine ‘virt’ emulation. type ‘help’ for commands.

note 1: for ubuntu: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from http://newos.org/toolchains/arm-eabi-5.3.0-Linux-x86_64.tar.xz