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Author SHA1 Message Date
Andreas Kling
dc66d70369 UserspaceEmulator: Don't exit the emulation loop on "RET" :^) 2020-07-11 17:13:15 +02:00
Andreas Kling
4d366b8b24 UserspaceEmulator: Implement PUSH_imm32 and PUSH_RM32 2020-07-11 17:12:44 +02:00
Andreas Kling
55d2bd9eec UserspaceEmulator: Implement short-range jump instructions 2020-07-11 17:12:21 +02:00
Andreas Kling
42787ae309 UserspaceEmulator: Implement the CALL_imm32 instruction 2020-07-11 17:05:04 +02:00
Andreas Kling
0a448ee960 UserspaceEmulator: Fix broken inline assembly for asymmetric op_foos 
When the Destination and Source of an op_foo were types of different
sizes, the generated assembly was not filling up the "source" register
fully in some cases. This led to incorrect results.
 2020-07-11 17:03:42 +02:00
Andreas Kling
c4ec38ddb5 UserspaceEmulator: Print out the current EIP as we execute instructions 2020-07-11 16:48:27 +02:00
Andreas Kling
ae1d14bc7a UserspaceEmulator: Load the target executable ELF semi-properly :^) 
This patch adds a basic ELF program loader to the UserspaceEmulator and
creates MMU regions for each PT_LOAD header. (Note that we don't yet
respect the R/W/X flags etc.)

We also turn the SoftCPU into an X86::InstructionStream and give it an
EIP register so we can actually execute code by fetching memory through
our MMU abstraction.
 2020-07-11 16:45:48 +02:00
Andreas Kling
0eab5659f8 UserspaceEmulator: Set up a very basic program entry stack 2020-07-11 16:30:17 +02:00
Andreas Kling
76b9fb258d UserspaceEmulator: Convert the XOR instruction to inline assembly 2020-07-11 16:02:25 +02:00
Andreas Kling
9db588daf1 UserspaceEmulator: Convert the SUB instruction to inline assembly 2020-07-11 15:52:53 +02:00
Andreas Kling
7d41b95071 UserspaceEmulator: Tweak INC and SAR helpers to not be SoftCPU members 
It's quite nice having these as compartmentalized free functions.
 2020-07-11 15:47:53 +02:00
Andreas Kling
e852768ba6 UserspaceEmulator: Add the INC and ADD instructions 
More inline assembly. I'm still figuring out how to combine templates
and inline assembly, but it's turning out pretty cool. :^)
 2020-07-11 14:20:08 +02:00
Andreas Kling
12ab46def9 UserspaceEmulator: Give SoftCPU an API for evaluating jump conditions 
There are 16 conditions and they're all based on a combination of the
CPU flags.
 2020-07-11 13:45:39 +02:00
Andreas Kling
133803b8a7 UserspaceEmulator: Split SAR inline assembly into 8/16/32 bit variants 2020-07-11 13:43:27 +02:00
Andreas Kling
743d4ccb8f UserspaceEmulator: Support MOV_RM32_reg32 with memory destination 2020-07-11 13:29:05 +02:00
Andreas Kling
e5afe6a579 UserspaceEmulator: Implement the CMP family of instructions 
These are identical to SUB, except they don't store the result (they
only upate the arithmetic flags.)
 2020-07-11 13:27:40 +02:00
Tom
8d5fde440a FileManager: Specify "Open in Text Editor" action as default in context menu 
Since double-clicking the item would trigger the "Open in Text Editor"
action, specify it as the default action when displaying the
context menu.
 2020-07-11 11:45:49 +02:00
Tom
1c1ab71692 WindowServer/LibGUI: Add default menu items and allow default action for context menu 
By specifying an optional Action for Menu::popup an application
can specify what item should be displayed as a default item.
 2020-07-11 11:45:49 +02:00
Tom
fc4e01a3c9 WindowServer: Add support for default MenuItem 
This allows marking a MenuItem as a default action, e.g. in a
context menu for an action that reflects what e.g. a double click
would perform.

Also enhance the window menu to mark the close action as the
default, and when double clicked perform that action.

Fixes #1289
 2020-07-11 11:45:49 +02:00
AnotherTest
684b04e02a WebServer: Allow the user to specify the base directory 
This commit makes the WebServer accept a base path to serve.
This makes taking files out of the system significantly more simple
(depending on whom you ask).
 2020-07-11 11:36:12 +02:00
Kevin Meyer
7b5ffe67cf LibWeb: Check if layout node is still present after dispatch_event 
Fixes https://github.com/SerenityOS/serenity/issues/2638

Dispatching an event can change the document. Therefore another check
for the layout_root needs to be done.
 2020-07-11 11:34:59 +02:00
Kevin Meyer
821043d798 LibWeb: Remove some unnecessary casts 2020-07-11 11:34:59 +02:00
Kevin Meyer
d5d732cc87 LibWeb: Fix EVENT_DEBUG dump compilation 2020-07-11 11:34:59 +02:00
Nico Weber
97aaf95265 FontEditor: Add a "Save" menu item 2020-07-11 11:34:38 +02:00
Nico Weber
315dc8d81b FontEditor: Add a "Save as..." menu item 2020-07-11 11:34:38 +02:00
Nico Weber
03e722f664 FontEditor: Add an "Open..." menu item 2020-07-11 11:34:38 +02:00
Peter Elliott
7a27fa3df8 LibC: Implement tcflush(3) 2020-07-11 11:33:33 +02:00
Andreas Kling
f4ddca0a73 UserspaceEmulator: Warn in SoftMMU if accessing unknown memory 2020-07-10 20:29:44 +02:00
Andreas Kling
58fd010caf UserspaceEmulator: Implement a bunch of the MOV instructions 2020-07-10 20:29:14 +02:00
Andreas Kling
04d58f54b3 UserspaceEmulator: Implement the SAR instruction 
Let's try doing this with some inline assembly. We know we're running
on an x86 target anyway. :^)
 2020-07-10 20:20:27 +02:00
Andreas Kling
3899effb19 UserspaceEmulator: Implement the SUB family of instructions 2020-07-10 20:20:27 +02:00
Andreas Kling
0cf7fd5268 UserspaceEmulator+LibX86: Implement all the forms of XOR 
And they're all generic, which will make it easy to support more ops.
 2020-07-10 20:20:27 +02:00
Andreas Kling
9955819d92 UserspaceEmulator: Better 8/16 bit GPR accessors 2020-07-10 20:20:27 +02:00
Andreas Kling
6f27770cea UserspaceEmulator: Add 8/16 bit memory read/write operations 2020-07-10 20:20:27 +02:00
Andreas Kling
f8b38eabeb UserspaceEmulator: First cut of generic instruction implementations 
Let's use C++ templates to implement the generic parts of instructions.
There are tons of them with the same set of inputs, just different
behavior. Templates are perfect for this.
 2020-07-10 20:20:27 +02:00
Andreas Kling
30ef30ca09 UserspaceEmulator: Add proper segment registers 
Some things will flow better if we're able to index into a table of our
segment registers.
 2020-07-10 20:20:27 +02:00
Andreas Kling
4f41fada39 UserspaceEmulator: Add accessors for the 16-bit GPRs 2020-07-10 20:20:27 +02:00
Andreas Kling
45bfdd0063 LibX86: Add a templatized way to resolve ModR/M memory references 
Hopefully this will be flexible enough for our SoftCPU. :^)
 2020-07-10 20:20:27 +02:00
Andreas Kling
3a1cf9505d LibX86: Store Instruction's segment prefix as Optional<SegmentRegister> 
Instead of having a dedicated enum value for the empty state.
 2020-07-10 20:20:27 +02:00
Andreas Kling
f1801cfb28 UserspaceEmulator: Fix a Clang warning 
Clang didn't like default construction of PartAddressableRegister,
so let's just use memset() then.
 2020-07-10 20:20:27 +02:00
thankyouverycool
deceb91c48 FileManager: Show an open folder icon for the selected directory 
The currently selected directory now displays an open folder icon
in the directory tree.
 2020-07-10 19:44:18 +02:00
thankyouverycool
e6ddc7e022 LibGUI: Add missing on_toggle hook to TreeView 
Alt+arrow toggles are now captured.
 2020-07-10 19:44:18 +02:00
thankyouverycool
bd0a4cbbf9 Base: Update 16x16 filetype-folder icons 
Update folder-open icon to match current folder icon, and shift
the current folder icon right 1 pixel for smoove animation.
 2020-07-10 19:44:18 +02:00
Matthew Olsson
119386ffb0 LibJS: Add tests for symbol object integration 2020-07-09 23:33:00 +02:00
Matthew Olsson
7a1d485b19 LibJS: Integrate Symbols into objects as valid keys 
This allows objects properties to be created for symbol keys in addition
to just plain strings/numbers
 2020-07-09 23:33:00 +02:00
Matthew Olsson
9783a4936c LibJS: Add test for well-known symbols 2020-07-09 23:29:28 +02:00
Matthew Olsson
ffb569fd5d LibJS: Uncomment remaining symbol tests 2020-07-09 23:29:28 +02:00
Matthew Olsson
d9db6bec42 LibJS: Move global symbol map from SymbolObject to Interpreter 
This allows different instances of the Interpreter to have their own
global symbols. Also makes Symbol non-copyable and non-moveable.
 2020-07-09 23:29:28 +02:00
Andreas Kling
4d8683b632 UserspaceEmulator: Tidy up SoftCPU's general purpose registers 
This patch adds a PartAddressableRegister type, which divides a 32-bit
value into separate parts needed for the EAX/AX/AL/AH register splits.

Clean up the code around register access to make it a little less
cumbersome to use.
 2020-07-09 23:27:50 +02:00
Tom
b02d33bd63 Kernel: Fix some flaws that caused crashes or hangs during boot 
We need to halt the BSP briefly until all APs are ready for the
first context switch, but we can't hold the same spinlock by all
of them while doing so. So, while the APs are waiting on each other
they need to release the scheduler lock, and then once signaled
re-acquire it. Should solve some timing dependent hangs or crashes,
most easily observed using qemu with kvm disabled.
 2020-07-09 23:24:55 +02:00