RGBCube/serenity
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32314 commits 1 branch 0 tags 227 MiB
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208 commits

Author SHA1 Message Date
Gunnar Beutner
db334b50d0 Kernel: Don't byteswap the ISR number on interrupt entry 
Let's just add the padding before we jump to interrupt_common_asm_entry.
 2021-07-01 23:36:17 +02:00
Hendiadyoin1
5f6c513610 Kernel: Add support for 64-bit unaligned Mem-ops 
Also let the compiler enforce the size and type restrictions
 2021-07-01 17:32:34 +02:00
Hendiadyoin1
6b9cf8376e Kernel: Remove not needed comment in Processor.h 2021-07-01 17:32:34 +02:00
Hendiadyoin1
90cd11fa8c Kernel: Support starting up secondary processors on x86_64 2021-07-01 10:50:00 +02:00
Gunnar Beutner
e37576440d Kernel: Fix stack alignment on x86_64 
These were already properly aligned (as far as I can tell).
 2021-06-30 15:13:30 +02:00
Gunnar Beutner
50839bd1f1 Kernel: Properly initialize r8-r15 for new threads on x86_64 2021-06-30 15:13:30 +02:00
Gunnar Beutner
0b82c583e0 Kernel: Implement capturing stack traces on x86_64 2021-06-29 20:03:36 +02:00
Gunnar Beutner
36ce2a2b76 Kernel: Fix struct layout for interrupt entries on x86_64 2021-06-29 20:03:36 +02:00
Gunnar Beutner
df9e73de25 Kernel: Add x86_64 support for fork() 2021-06-29 20:03:36 +02:00
Gunnar Beutner
732dc72c58 Kernel: Fix the limit for the IDT table 2021-06-28 22:29:28 +02:00
Gunnar Beutner
e979a88af4 Kernel: Implement do_assume_context for execve() on x86_64 2021-06-28 22:29:28 +02:00
Gunnar Beutner
a8587fbfb9 Kernel: Use FlatPtr for register-sized values 2021-06-28 22:29:28 +02:00
Gunnar Beutner
b5aad1c81d Kernel: Fix GDT and segment selectors to make userland work on x86_64 
Userland faulted on the very first instruction before because the
PML4T/PDPT/etc. weren't marked as user-accessible. For some reason
x86 doesn't care about that.

Also, we need to provide an appropriate userspace stack segment
selector to iretq.
 2021-06-28 22:29:28 +02:00
rileylyman
640db93bdd Kernel: Fix small typo in inline comment 2021-06-28 16:39:25 +02:00
Gunnar Beutner
e56a0d6af7 Kernel: Fix memset() on x86_64 
Previously memset() only set half of the bytes to the requested value.
 2021-06-28 15:55:00 +02:00
Gunnar Beutner
32840dfa17 Kernel: Implement more x86_64 context switching functionality 2021-06-28 15:55:00 +02:00
Gunnar Beutner
076692b1ef Kernel: Implement entry code for x86_64 interrupts 
With this fixed we can now properly handle interrupts (e.g. timer
interrupts) on x86_64.
 2021-06-28 15:55:00 +02:00
Gunnar Beutner
328d44e227 Kernel: Fix stack for new threads on x86_64 
Unlike on x86 iretq always pops rsp and ss.
 2021-06-28 15:55:00 +02:00
Gunnar Beutner
9ed051fe25 Kernel: Implement initializing threads on x86_64 2021-06-27 15:46:42 +02:00
Gunnar Beutner
f285241cb8 Kernel: Rename Thread::tss to Thread::regs and add x86_64 support 
We're using software context switches so calling this struct tss is
somewhat misleading.
 2021-06-27 15:46:42 +02:00
Gunnar Beutner
eba33f82b8 Kernel: Reorder code a bit to clarify which #if block it belongs to 2021-06-27 15:46:42 +02:00
Gunnar Beutner
df530941cc Kernel: Implement safe_* memory access functions for x86_64 2021-06-27 15:46:42 +02:00
Gunnar Beutner
79ab9cce18 Kernel: Clear segment registers on x86_64 
They're supposedly unused but iretq doesn't like ss being non-zero.
 2021-06-27 15:46:42 +02:00
Gunnar Beutner
9d9f20391d Kernel: Use macros for GDT indices instead of hardcoding the values 2021-06-27 15:46:42 +02:00
Gunnar Beutner
065c6c307d Kernel: Add support for interrupts on x86_64 2021-06-27 15:46:42 +02:00
Gunnar Beutner
233ef26e4d Kernel+Userland: Add x86_64 registers to RegisterState/PtraceRegisters 2021-06-27 15:46:42 +02:00
Gunnar Beutner
10ca7f18a7 Kernel: Fix declaration for struct TrapFrame 
This is declared as a struct elsewhere.
 2021-06-27 15:46:42 +02:00
Gunnar Beutner
324f72d02b Kernel: Fix incorrect flags for the GDT entries 
The Sz (protected mode) bit should not be set for 64-bit GDT entries.
 2021-06-27 15:46:42 +02:00
Gunnar Beutner
389bf82889 Kernel: Add CPUID flag for long mode 
This isn't particularly useful because by the time we've entered
init() the CPU had better support x86_64 anyway. However this shows the
CPU flag in System Monitor - even in 32-bit mode.
 2021-06-26 11:08:52 +02:00
Gunnar Beutner
9077c64d37 Kernel: Correct spelling mistake 2021-06-26 11:08:52 +02:00
Gunnar Beutner
e52051903b Kernel: Fix off-by-one error in Processor::write_raw_gdt_entry 2021-06-26 11:08:52 +02:00
Gunnar Beutner
f630299d49 Kernel: Add support for setting up a x86_64 GDT once in C++ land 2021-06-26 11:08:52 +02:00
Gunnar Beutner
29d9666e02 Kernel: Fix GDT limits 
The GDT limits are inclusive, so for correctness we should subtract
one from the structs' size.
 2021-06-26 11:08:52 +02:00
Gunnar Beutner
4c555684b7 Kernel: Set an appropriate GDT for 64-bit mode 2021-06-25 15:19:09 +02:00
Gunnar Beutner
d84abe51f5 Kernel: Use PML4T for 64-bit mode 2021-06-25 15:19:09 +02:00
Gunnar Beutner
13e4093da4 Kernel: Move Multiboot header into a separate file 2021-06-25 15:19:09 +02:00
Gunnar Beutner
19c0498ccc Kernel: Update the x86_64 boot code to match i386's code 2021-06-25 15:19:09 +02:00
Daniel Bertalan
74535628a8 Kernel: Use proper Atomic<T> types in CPU 
This is needed because Clang's intrinsic atomic functions behave weirdly
if only one of their pointer arguments is volatile.
 2021-06-24 17:35:49 +04:30
Gunnar Beutner
38fca26f54 Kernel: Add stubs for missing x86_64 functionality 
This adds just enough stubs to make the kernel compile on x86_64. Obviously
it won't do anything useful - in fact it won't even attempt to boot because
Multiboot doesn't support ELF64 binaries - but it gets those compiler errors
out of the way so more progress can be made getting all the missing
functionality in place.
 2021-06-24 09:27:13 +02:00
Hendiadyoin1
62f9377656 Kernel: Move special sections into Sections.h 
This also removes a lot of CPU.h includes infavor for Sections.h
 2021-06-24 00:38:23 +02:00
Hendiadyoin1
553ea3036d Kernel: Remove PAGE_SIZE from CPU.h 
We have that information in LibC, lets use that instead
 2021-06-24 00:38:23 +02:00
Hendiadyoin1
7ca3d413f7 Kernel: Pull apart CPU.h 
This does not add any functional changes
 2021-06-24 00:38:23 +02:00
Jean-Baptiste Boric
fea23d0ec1 Kernel: Detect support for CPUID FXSR 
The fxsave and fxrstor instructions are available only if the FXSR
feature is present.
 2021-06-18 01:02:25 +02:00
Gunnar Beutner
4fca9ee060 Kernel: Allow building the kernel with -O0 
Unfortunately the kernel doesn't run with -O0 but at least it can be
successfully built with this change.
 2021-05-28 19:52:22 +01:00
Gunnar Beutner
8495d6aeca Kernel: Use the Function class for smp_broadcast()/smp_unicast() 
This avoids allocations for smp_broadcast() and smp_unicast() by
using the Function class.
 2021-05-20 09:09:10 +02:00
Gunnar Beutner
cac7a8ced9 Kernel: Use the Function class for deferred_call_queue() 
This avoids allocations for deferred_call_queue().
 2021-05-20 09:09:10 +02:00
Brian Gianforcaro
7540f4268b Kernel: Remove s_processor_lock by making s_processors statically sized 
Currently in SMP mode we hard code support for up to only 8 processors.
There is no reason for this to be a dynamic allocation that needs to be
guarded by a spinlock. Instead use a Array<T* with inline storage of 8,
allowing each processor to initialize it self in place, avoiding all
the need for locks.
 2021-05-20 08:10:07 +02:00
Nicholas Baron
aa4d41fe2c
AK+Kernel+LibELF: Remove the need for IteratorDecision::Continue 
By constraining two implementations, the compiler will select the best
fitting one. All this will require is duplicating the implementation and
simplifying for the `void` case.

This constraining also informs both the caller and compiler by passing
the callback parameter types as part of the constraint
(e.g.: `IterationFunction<int>`).

Some `for_each` functions in LibELF only take functions which return
`void`. This is a minimal correctness check, as it removes one way for a
function to incompletely do something.

There seems to be a possible idiom where inside a lambda, a `return;` is
the same as `continue;` in a for-loop.
 2021-05-16 10:36:52 +01:00
Brian Gianforcaro
64b4e3f34b
Kernel: Add Processor::is_bootstrap_processor() function, and use it. (#6871) 
The variety of checks for Processor::id() == 0 could use some assistance
in the readability department. This change adds a new function to
represent this check, and replaces the comparison everywhere it's used.
 2021-05-05 18:48:26 +02:00
Tom
ec27cbbb2a Kernel: Store whether a thread is the idle thread in Thread directly 
This solves a problem where checking whether a thread is an idle
thread may require iterating all processors if it is not the idle
thread of the current processor.
 2021-05-04 16:44:02 +02:00