| commit | a08c216af7776e3e971b9a6b01129eda21a22fe9 | [log] [tgz] |
|---|---|---|
| author | RJ Ascani <rjascani@google.com> | Mon Jun 11 15:20:37 2018 -0700 |
| committer | CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> | Wed Jun 13 20:30:21 2018 +0000 |
| tree | 5f72138872447e2bfd6646bfb97cbf76227696f5 | |
| parent | 3ed32f42d46625b294909d0d6e55a2bc09f4ebd1 [diff] |
[syscalls] Add ARM SMCCC support to SMC syscall In order to support the full range of services that are available via the ARM Secure Monitor, zx_smc_call needed to gain some additional input and output parameters. These additional parameters bring the syscall in line with the ARM SMC Calling Convention where there are eight input registers and four output registers. The SMC invocation itself was moved out from underneath the PSCI kernel driver to the arm64 arch specific component. All current SMC invocations were updated to the new function and there are currently no calls from higher layers. Change-Id: I5577479a7f960a85a04cc6d978c27a2e37246a2f
Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation.
The canonical Zircon Git repository is located at: https://fuchsia.googlesource.com/zircon
A read-only mirror of the code is present at: https://github.com/fuchsia-mirror/zircon
The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes).
Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls.
Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions.
This page is a non-comprehensive index of the zircon documentation.