[arch][x86] fix up some in instruction macros
Turns out all of the in and rep ins/outs instruction macros have been wrong
since they were first added.
-Make sure they clobber memory
-Make sure edi/esi/ecx registers are marked as both read and written by
the instruction.
The latter was causing a codegen problem in the ide driver where the
pointer was pushed forward by a rep ins but the compiler didn't know the
register was modified.
1 file changed
tree: cefe147cb7402860a827eceea55879d871abd5be
- .github/
- app/
- arch/
- dev/
- docs/
- external/
- kernel/
- lib/
- make/
- platform/
- project/
- scripts/
- target/
- tools/
- top/
- .gitignore
- engine.mk
- LICENSE
- lk_inc.mk.example
- makefile
- README.md
README.md
The Little Kernel Embedded Operating System
The LK kernel is an SMP-aware kernel designed for small systems ported to a variety of platforms and cpu architectures.
See https://github.com/littlekernel/lk for the latest version.
High Level Features
- Fully-reentrant multi-threaded preemptive kernel
- Portable to many 32 and 64 bit architectures
- Support for wide variety of embedded and larger platforms
- Powerful modular build system
- Large number of utility components selectable at build time
Supported architectures
- ARM32
- Cortex-M class cores (armv6m - armv8m)
- ARMv7+ Cortex-A class cores
- ARM64
- RISC-V 32 and 64bit bit in machine and supervisor mode
- x86-32 and x86-64 386 up through modern cores
- microblaze
- MIPS
- OpenRISC 1000
To build and test for ARM on linux
- install or build qemu. v2.4 and above is recommended.
- install gcc for embedded arm (see note 1)
- run scripts/do-qemuarm (from the lk directory)
- 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: for ubuntu x86-64: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from https://newos.org/toolchains/x86_64-elf-10.2.0-Linux-x86_64.tar.xz
