Drew Galbraith
dcc05f2741
Add a libc skeleton with a primitive malloc.
2023-06-07 10:33:10 -07:00
Drew Galbraith
eb04242a59
Add a debug mode for the KernelHeap.
2023-06-07 10:01:22 -07:00
Drew Galbraith
40b21d9c75
[Mammoth] Add Channel object for simple IPC messages
2023-06-07 09:37:16 -07:00
Drew Galbraith
65439c163a
Compile sys libraries without exceptions.
2023-06-07 09:36:14 -07:00
Drew Galbraith
3243b6024b
Update init bg script to inclue AR
2023-06-07 09:29:38 -07:00
Drew Galbraith
a5c4d40575
Refactor error types and error reporting
2023-06-07 08:51:23 -07:00
Drew Galbraith
81b925eea0
Add a basic IPC setup with Channel Object.
...
Pass a process a channel endpoint on startup that it will use to
get it's initial capabilities.
2023-06-07 08:24:10 -07:00
Drew Galbraith
b79ec07636
Return Z_OK on all syscall paths
2023-06-07 07:15:25 -07:00
Drew Galbraith
55340e2917
Make Capability RefCounted
2023-06-07 06:21:36 -07:00
Drew Galbraith
6c10c57bfa
Mass rename memory object variables.
...
Use shorthand:
AddressSpace -> vmas
MemoryObject -> vmmo
The VM prefix makes these a little more distinguishable in code.
2023-06-07 00:30:26 -07:00
Drew Galbraith
a8a4f8d9ab
Add checks to mammoth thread lib
2023-06-07 00:25:04 -07:00
Drew Galbraith
e246f28d9c
Get the second process elf from a MemoryObject instead of hardcoding.
...
Allows us to delete the CopyIntoNonResidentProcess function and simply
rely on the MemoryObject copy functions.
2023-06-07 00:19:15 -07:00
Drew Galbraith
eb454300e6
Move elf loader into the init loader in the kernel
2023-06-07 00:08:21 -07:00
Drew Galbraith
23895b5c6c
Spawn Processes using memory primitives rather than and elf loader.
...
This allows us to remove the temporary syscall for that style of process
spawn.
2023-06-07 00:04:53 -07:00
Drew Galbraith
b06c76e477
Create a MemoryObject class and use it to load programs.
2023-06-06 21:44:10 -07:00
Drew Galbraith
1fda0f3fae
Move VirtualMemory to AddressSpace Object
2023-06-06 20:43:15 -07:00
Drew Galbraith
b5ad454ad1
Move Process & Thread to the object folder.
2023-06-06 20:18:53 -07:00
Drew Galbraith
4e278a4664
Make a KernelObject base class for all Capabilities.
2023-06-06 20:13:07 -07:00
Drew Galbraith
d358c1d672
Move process be to RefCounted
2023-06-06 19:12:46 -07:00
Drew Galbraith
2e1357255c
Create a RefCounted type and use it for Thread.
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This should prevent me from actually creating 2 shared ptrs of
a single kernel object with their separate ref counts.
2023-06-06 19:05:03 -07:00
Drew Galbraith
d9b17d96d7
Cleanup Thread constructor
2023-06-06 18:40:32 -07:00
Drew Galbraith
41d25a7b46
Reformat includes
2023-06-06 17:12:08 -07:00
Drew Galbraith
174d4b10fb
Move threading calls into a basic user space library.
2023-06-06 16:56:19 -07:00
Drew Galbraith
b0c2a6732b
Always create threads in CREATED state.
...
Simplify the process class to have threads marked as runnable
separately.
2023-06-06 16:27:25 -07:00
Drew Galbraith
ef8eb5d993
Add a threading syscall API.
2023-06-06 16:24:03 -07:00
Drew Galbraith
e2aad55a8a
Only dump bootloader modules once.
2023-06-06 15:04:34 -07:00
Drew Galbraith
a092a57483
Begin defining the process/thread api
2023-06-06 15:01:31 -07:00
Drew Galbraith
e3661e7848
Add LICENSE and README
2023-05-31 00:03:44 -07:00
Drew Galbraith
69b5cd001f
Add a skeleton framework for capabilities.
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Use the first capability to spawn a child process.
2023-05-30 23:55:42 -07:00
Drew Galbraith
09b8136ef9
Fix formatting on panic
2023-05-30 23:52:50 -07:00
Drew Galbraith
69c73a9386
Add a qemu mode that dumps interrupt info.
2023-05-30 23:22:52 -07:00
Drew Galbraith
9e3df0ccd0
Add pid/tid to all log messages
2023-05-30 23:22:29 -07:00
Drew Galbraith
2eefda6114
add a class to allocate and manage user space stacks
2023-05-30 22:35:57 -07:00
Drew Galbraith
1db93e5b12
Move PML4 initialization into the VirtualMemory class.
2023-05-30 21:39:19 -07:00
Drew Galbraith
f22dd66c8d
Manage KernelStacks separately rather than just allocing bytes.
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Create a global KernelStackManager that will handle the relevant allocs.
2023-05-30 21:28:44 -07:00
Drew Galbraith
3c3341a90f
Add a process spawn syscall and use it to start a proc.
...
Also add a skeleton VirtualMemory manager to be used per process.
2023-05-30 20:55:03 -07:00
Drew Galbraith
5bcf1f4e4a
Add a second process to be loaded by the bootloader.
2023-05-30 20:54:37 -07:00
Drew Galbraith
b9b45c5e45
Add the ability to copy memory to non resident process.
...
Use/Test this by loading the user space elf from the kernel process
before it starts rather than as a part of the first thread.
This simplifies thread start a fair bit.
2023-05-30 01:27:47 -07:00
Drew Galbraith
f6609983d2
Move away from using recursive mapping for page tables.
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Having the HHDM-based mapping allows us to more easily map data into
non-resident processes.
2023-05-30 01:06:01 -07:00
Drew Galbraith
c6921b5459
Add validity check in shared ptr
2023-05-30 01:05:50 -07:00
Drew Galbraith
de49dcc01a
Move scheduler to new global class format.
2023-05-29 23:48:32 -07:00
Drew Galbraith
7fe6c24aa5
Add a ProcessManager class to store Process objects.
...
Trying out a new method for exposing global objects directly via a
variable.
2023-05-29 23:35:44 -07:00
Drew Galbraith
b58186265e
Split Yield and Preempt into separate scheduling functions.
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This switch makes the logic for each much easier to parse.
2023-05-29 23:09:39 -07:00
Drew Galbraith
3fee5ac9d7
Rework scheduler to store the current thread separately.
...
This works better with the sleep thread and lets us check state
transitions more easily.
2023-05-29 22:54:22 -07:00
Drew Galbraith
656687b183
Schedule on PIC timer raise.
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This causes a page fault because we don't properly handle the sleep
case.
2023-05-29 22:32:50 -07:00
Drew Galbraith
496dfeaef9
Update the timer to a more reasonable time slice of 50ms
2023-05-29 22:17:56 -07:00
Drew Galbraith
9869d1022a
Mask all interrupts on the master PIC except the timer.
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This prevents us from getting a GP fault when an unhandled interrupt
arises.
2023-05-29 22:07:47 -07:00
Drew Galbraith
a949055bce
Flesh out the GP Fault hanlder slightly.
2023-05-29 22:01:06 -07:00
Drew Galbraith
629dca278b
Enable the PIC and add a timer.
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This causes a GP fault after the timer runs for some time.
2023-05-29 21:52:01 -07:00
Drew Galbraith
80d2bf1aaa
Move Processes and Threads to be stored in SharedPtr
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Reference counting lets us pass these around a bit more easily.
SharedPtr was lightly tested using uint64_t in the main zion funcion.
Also add a sleep functionality instead of panicking. Functionally the
same right now since we don't preempt.
2023-05-29 15:50:38 -07:00
Drew Galbraith