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Kernel+LibC: Add a dbgputch() syscall and use it for userspace dbgprintf().

The "stddbg" stream was a cute idea but we never ended up using it in
practice, so let's simplify this and implement userspace dbgprintf() on top
of a simple dbgputch() syscall instead.

This makes debugging LibC startup a little bit easier. :^)
This commit is contained in:
Andreas Kling 2019-07-21 19:45:31 +02:00
parent be7dcca1a6
commit 3fce2fb205
6 changed files with 18 additions and 15 deletions

View file

@ -116,7 +116,8 @@ struct timeval;
__ENUMERATE_SYSCALL(fchown) \
__ENUMERATE_SYSCALL(halt) \
__ENUMERATE_SYSCALL(reboot) \
__ENUMERATE_SYSCALL(dump_backtrace)
__ENUMERATE_SYSCALL(dump_backtrace) \
__ENUMERATE_SYSCALL(dbgputch)
namespace Syscall {