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android / trusty / lk / common / b2a4b419c137b90f7cb4af3b954bf6633270f027
commitb2a4b419c137b90f7cb4af3b954bf6633270f027[log] [tgz]
authorAndrei Homescu <ah@immunant.com>Fri Mar 12 22:01:46 2021 -0800
committerAndrei Homescu <ah@immunant.com>Wed Mar 24 21:02:08 2021 -0700
tree3fa7902b00692a033c6c2ca3fe3093961eafda03
parentc191e7886a47e1ed51cf5c2690912c0b2eb9a7fe [diff]
[include][compiler.h] Fix INCBIN/INCFILE macros

The compiler.h header defines two macros INCBIN and
INCFILE that can be used to include binary files
into C sources. This patch fixes a few issues with them:
* The .align directive is equivalent to .p2align
  on some architectures (ARM/AArch64) and to .balign
  on others (x86). INCBIN previously used .align and
  now uses .balign for correct alignment.
* .align 1 enforces a 2-byte alignment on ARM/AArch64,
  which caused the _end symbol for the binary to be off
  by 1 byte in some cases, which the macro previously
  accounted for (incorrectly). With the correct .balign
  directive the extra byte is never added, so the size
  is now correctly computed without the -1 addend.
* INCBIN should end in a .previous directive
  to restore the previous section, since the macro
  starts with .section.

Bug: 115420908
Change-Id: I2149e21d6f7157369a7b374a51af23933bff6b39
1 file changed
tree: 3fa7902b00692a033c6c2ca3fe3093961eafda03
  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. README.md
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