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11814 commits 1 branch 0 tags 230 MiB
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3011 commits

Author SHA1 Message Date
Andreas Kling
ceec1a7d38 AK: Make Vector use size_t for its size and capacity 2020-02-25 14:52:35 +01:00
Andreas Kling
d0f5b43c2e Kernel: Use Vector::unstable_remove() when deallocating a region 
Process::m_regions is not sorted, so we can use unstable_remove()
to avoid shifting the vector contents. :^)
 2020-02-24 18:34:49 +01:00
Andreas Kling
f59747a3d8 Kernel: Fix some formatting goofs in Process.h 2020-02-24 16:17:03 +01:00
Andreas Kling
cb9d9846e0 Kernel: Fail with ENOMEM if there's insufficient VM for a SharedBuffer 2020-02-24 13:33:10 +01:00
Andreas Kling
30a8991dbf Kernel: Make Region weakable and use WeakPtr<Region> instead of Region* 
This turns use-after-free bugs into null pointer dereferences instead.
 2020-02-24 13:32:45 +01:00
Andreas Kling
79576f9280 Kernel: Clear the region lookup cache on exec() 
Each process has a 1-level lookup cache for fast repeated lookups of
the same VM region (which tends to be the majority of lookups.)
The cache is used by the following syscalls: munmap, madvise, mprotect
and set_mmap_name.

After a succesful exec(), there could be a stale Region* in the lookup
cache, and the new executable was able to manipulate it using a number
of use-after-free code paths.
 2020-02-24 12:37:27 +01:00
Liav A
5ce6215af7 ACPI: Don't set Smart Pointers to be nullptr 
Instead of setting the smart pointers to be nullptr in the
initializer list, it's done automatically by OwnPtr.
 2020-02-24 11:27:03 +01:00
Liav A
85307dd26e Kernel: Don't use references or pointers to physical addresses 
Now the ACPI & PCI code is more safer, because we don't use raw pointers
or references to objects or data that are located in the physical
address space, so an accidental dereference cannot happen easily.
Instead, we use the PhysicalAddress class to represent those addresses.
 2020-02-24 11:27:03 +01:00
Liav A
fe664965c2 Kernel: Change get_sharing_devices_count() in GenericInterruptHandler 
The new method' name is sharing_devices_count().
The Serenity Coding Style tends to not accept the word "get" in
methods' names if possible.
 2020-02-24 11:27:03 +01:00
Liav A
a7d7c0e60c Kernel: Change get_pci_address() to pci_address() in PCI::Device class 
The Serenity Coding Style tends to not accept the word "get" in
methods' names if possible.
 2020-02-24 11:27:03 +01:00
Liav A
80eea6cd8b Kernel: Create an entry for viewing interrupts in ProcFS 2020-02-24 11:27:03 +01:00
Liav A
e3b24d0478 Kernel: Delete unused files 2020-02-24 11:27:03 +01:00
Liav A
36eea5fa60 Build: Update the Kernel makefile to build the latest changes 2020-02-24 11:27:03 +01:00
Liav A
4448597c64 Kernel: Update the init stage to use all the latest changes 
gdt_init() and idt_init() will be invoked earlier in the boot process.
Also, setup_interrupts() will be called to setup the interrupt mode.
 2020-02-24 11:27:03 +01:00
Liav A
bb73802b15 CPU: Use the new interrupt components 
Now we use the GenericInterruptHandler class instead of IRQHandler in
the CPU functions.
This commit adds an include to the ISR stub macros header file.
Also, this commit adds support for IRQ sharing, so when an IRQHandler
will try to register to already-assigned IRQ number, a SharedIRQHandler
will be created to register both IRQHandlers.
 2020-02-24 11:27:03 +01:00
Liav A
9e66eb160c Kernel: Add the new APIC namespace 
Also, the enable() function is now correct and will use the right
registers and values. In addition to that, write_register() and
read_registers() are not relying on identity mapping anymore.
 2020-02-24 11:27:03 +01:00
Liav A
71371d39b3 CPU: Add 2 files with ISR stub macros 2020-02-24 11:27:03 +01:00
Liav A
c51a57fb32 Kernel: Update SB16 driver to use the new IRQHandler class 
Also, add methods to allow changing of IRQ line in the SB16 card.
 2020-02-24 11:27:03 +01:00
Liav A
895e874eb4 Kernel: Include the new PIT class in system components 2020-02-24 11:27:03 +01:00
Liav A
b3c132ffb7 Kernel: Update PATAChannel implementation to use the PIT class 
Also, update the class implementation to use PCI::Device class
accordingly.
The create() helper will now search for an IDE controller in the
PCI bus, allowing to simplify the initialize() method.
 2020-02-24 11:27:03 +01:00
Liav A
83aa868c17 Kernel: Update PATAChannel class to use the PCI::Device class 
PATAChannel class will inherit from the PCI::Device class, thus,
can still implement IRQ handling.
 2020-02-24 11:27:03 +01:00
Liav A
12dbb7ca49 Kernel: Add MSIHandler class 
This is a stub for now, since we don't support Message Signaled
Interrupts yet.
 2020-02-24 11:27:03 +01:00
Liav A
9d281b4b15 Kernel: Add UnhandledInterruptHandler class 
This class will be used to represent an IRQ vector handler that wasn't
assigned to any IRQ Handler.
 2020-02-24 11:27:03 +01:00
Liav A
9587f2d3ee Kernel: Add SharedIRQHandler class 
This class represents a shared interrupt handler. This class will not be
created automatically but only if two IRQ Handlers are sharing the same
IRQ number.
 2020-02-24 11:27:03 +01:00
Liav A
740534cd67 Kernel: Update system components to use the new IRQHandler class 2020-02-24 11:27:03 +01:00
Liav A
a46120b4a8 ACPI: Run clang-format on the definitions file 2020-02-24 11:27:03 +01:00
Liav A
16055de978 Kernel: Introduce the PIT class 
The PIT class inherits from HardwareTimer class, and is replacing
the PIT namespace.
 2020-02-24 11:27:03 +01:00
Liav A
d83a3eff1f Kernel: Update Network adapter classes to use the PCI::Device class 
Those classes will inherit from the PCI::Device class, thus,
they can still implement IRQ handling.
 2020-02-24 11:27:03 +01:00
Liav A
73a7e5875e Kernel: Update PCI::Device class to use the new IRQHandler class 2020-02-24 11:27:03 +01:00
Liav A
ea1251d465 Kernel: Add HardwareTimer class 
This is an abstraction layer for future hardware timers
that will be implemented.
 2020-02-24 11:27:03 +01:00
Liav A
dd7522bdb2 Kernel: Add new IRQHandler class 
This class will replace the old IRQHandler class later.
 2020-02-24 11:27:03 +01:00
Liav A
b201b23363 Kernel: Add Interrupt Management and Generic Interrupt Handler 
The GenericInterruptHandler class will be used to represent
an abstract interrupt handler. The InterruptManagement class will
represent a centralized component to manage interrupts.
 2020-02-24 11:27:03 +01:00
Liav A
ebe30ed11e ACPI: Adding definitions for HPET 
Also, definitions were added for MADT entries, like IOAPIC and GSI
overriding information.
 2020-02-24 11:27:03 +01:00
Liav A
e760ebcacb Kernel: Add the IOAPIC class 
This class inherits from IRQController class, and represents
the 82093AA IOAPIC chip.
 2020-02-24 11:27:03 +01:00
Liav A
7d59a67504 Kernel: Add the PIC class 
This class inherits from IRQController class, and represents
the common Intel 8259 PIC chip.
 2020-02-24 11:27:03 +01:00
Liav A
b56afbea17 Kernel: Add IRQController class 
This class is an abstraction layer for different IRQ controllers
that are present in a typical system.
 2020-02-24 11:27:03 +01:00
Liav A
35f27231b3 Kernel: Fix a wrong debug message in ACPIStaticParser 2020-02-24 11:27:03 +01:00
Liav A
3539666ac9 Kernel: Add PCI helpers to enable and disable the interrupt line 2020-02-24 11:27:03 +01:00
Liav A
ca05d54b2b Kernel: Add MultiProcessor Parser 2020-02-24 11:27:03 +01:00
Andreas Kling
0763f67043 AK: Make Bitmap use size_t for its size 
Also rework its API's to return Optional<size_t> instead of int with -1
as the error value.
 2020-02-24 09:56:07 +01:00
thatlittlegit
ab9e5755ba Userland+Kernel: Set shutdown/reboot to only be run by the phys group 2020-02-23 22:03:03 +01:00
thatlittlegit
30556a0a93 SystemMenu: Move SystemDialog into SystemMenu and remove INI config 
I probably would've done INI config removal in another commit, but it
fit well here because I didn't want to pledge wpath for SystemMenu if I
didn't need to.

Frankly, that's something that I think should be done: allow ConfigFile
to be used read-only.
 2020-02-23 22:03:03 +01:00
Andreas Kling
bbc02af090 Demos: Remove silly HelloWorld2 demo 
This was just a tiny test app made with the old VisualBuilder. It's not
really useful for anything.
 2020-02-23 12:27:53 +01:00
Andreas Kling
7ec758773c Kernel: Dump all kernel regions when we hit a page fault during IRQ 
This way you can try to figure out what the faulting address is.
 2020-02-23 11:10:52 +01:00
Andreas Kling
a70cc5ca1d Kernel: Commit the entire region up front in KBuffer::copy() 
Since we know exactly how much physical memory we'll need, we might as
well commit it up front instead of letting page faults drive it.
 2020-02-23 11:10:52 +01:00
Andreas Kling
a731ccd4a0 Kernel: Build without debugging symbols by default 
Compiling with -g adds roughly 30% to kernel build times. Anyone who
wants this can turn it on locally instead.
 2020-02-22 21:27:08 +01:00
Andreas Kling
97e9deccf0 Ext2FS: Add Missing HashMap.h include 2020-02-22 16:37:51 +01:00
Andreas Kling
e334c36757 Kernel: Remove unnecessary allocation metadata from kmalloc() chunks 
Each allocation header was tracking its index into the chunk bitmap,
but that index can be computed from the allocation address anyway.

Removing this means that each allocation gets 4 more bytes of memory
and this avoids allocating an extra chunk in many cases. :^)
 2020-02-22 15:11:31 +01:00
Andreas Kling
3e973bfe14 Kernel: Make FileDescription slab-allocated 2020-02-22 14:37:58 +01:00
Andreas Kling
9fc54ba931 Kernel: Tweak SlabAllocator's slab sizes 
Nobody was using the 8-byte slab size, so get rid of it and move all of
its capacity to the new 64-byte slab size (which replaces 48-byte.)
 2020-02-22 14:36:45 +01:00