RGBCube/serenity
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3 commits

Author SHA1 Message Date
Andreas Kling
deff554096 Kernel+LibSystem: Add a 4th syscall argument 
Let's allow passing 4 function arguments to a syscall. The 4th argument
goes into ESI or RSI.
 2021-07-25 14:08:50 +02:00
Brian Gianforcaro
1682f0b760 Everything: Move to SPDX license identifiers in all files. 
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
 2021-04-22 11:22:27 +02:00
Andreas Kling
e87eac9273 Userland: Add LibSystem and funnel all syscalls through it 
This achieves two things:

- Programs can now intentionally perform arbitrary syscalls by calling
  syscall(). This allows us to work on things like syscall fuzzing.

- It restricts the ability of userspace to make syscalls to a single
  4KB page of code. In order to call the kernel directly, an attacker
  must now locate this page and call through it.
 2021-02-05 12:23:39 +01:00