283e641ece
Spinlock+LockedValue: Remove init() functions
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Let's set the default (unlocked) value of Spinlock's underlying atomic to 0, so even if the constructor is not called it stays like that.
2022-12-18 20:36:15 +01:00
1b867151bd
MemoryManager: Run include-what-you-use
continuous-integration/drone/push Build is passing
2022-12-17 15:47:35 +01:00
132963070b
MemoryManager: Make some variables atomic and the frame bitmap a LockedValue
2022-12-17 10:56:24 +01:00
59765aa334
Rename String.h -> CString.h
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continuous-integration/drone/push Build is passing
Let's not confuse String.h with a managed string class, it's in fact the equivalent of the C stdlib's <string.h>
2022-12-16 20:40:04 +01:00
a32590ff8a
Call expect_value more
2022-12-16 19:44:33 +01:00
cedcfa9c63
Improve cleanup on MemoryManager failure + add methods that use KernelVM
continuous-integration/drone/push Build is passing
2022-12-16 19:36:38 +01:00
dad95a8160
Map the page bitmap to virtual memory
2022-12-07 10:58:59 +01:00
1ebd892c16
Convert uses of u64 to usize
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Not all of them, but if you're measuring a size it's more appropriate to use usize than u64.
2022-12-07 10:55:47 +01:00
39b310b6b9
Make alignment a template parameter to help the compiler optimize
continuous-integration/drone/push Build is passing
2022-12-06 19:27:58 +01:00
ba758bcef8
Initialize the KernelVM
2022-12-05 21:01:18 +01:00
ea7893ba71
Make CHECK_PAGE_ALIGNED use expect() instead of check()
2022-12-05 13:28:36 +01:00
55a30ac487
Make CHECK_PAGE_ALIGNED use expect() instead of check()
2022-12-05 13:26:50 +01:00
bfd4647467
Rename largest_free -> largest_free_entry
2022-12-05 13:26:09 +01:00
d9fc50f1ea
Make MemoryMapEntry have private fields with public getters
2022-12-05 13:23:01 +01:00
3b77ba6b04
EVERYTHING IS CONSTANT IN THIS UNIVERSE
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Here's one advantage of Rust over C++:
Immutability by default. In Rust, you have to mark a variable as mutable, whereas in C++ you have to mark it as immutable.
What's the problem here? Usually, most variables don't need mutability. Thus we end up with const all over the place.
2022-12-05 12:49:01 +01:00
af96db3641
Remove bootboot declaration from MemoryManager now that it's MemoryMapIterator's job to walk the mmap
2022-12-04 15:56:25 +01:00
77e64d74a0
Remove unused header
2022-12-04 15:55:52 +01:00
766804b3a0
Use get_blocks_from_size instead of +1
2022-12-04 15:52:56 +01:00
0d10c98477
SImplify init_physical_frame_allocator() even more
2022-12-04 15:50:21 +01:00
5f6c48bd12
Use a friendlier way of iterating over the memory map
2022-12-04 15:45:13 +01:00
5aa2d1fa18
Add a Bitmap class to provide common functionality and use that in the MemoryManager
2022-12-04 15:14:07 +01:00
c7ab6bc2d3
Reorganize the luna/ directory so that headers aren't in the top level include path
2022-12-04 12:42:43 +01:00
985d45ddfb
Switch to logging functions everywhere
2022-11-30 17:16:36 +01:00
d2856d8812
Provide meaningful error numbers
2022-11-30 17:13:59 +01:00
fe47e0d5cb
Clean init() up
2022-11-30 16:30:42 +01:00
cb88630d86
Bugfix: Make alloc_at return the start of the virtual memory range instead of the end
2022-11-20 15:11:53 +01:00
af267772f0
Rename MemoryManager::map to map_frames_at
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To make it clearer that this API is only intented for mapping contiguous frames of physical memory (for MMIO perhaps?)
2022-11-19 22:32:48 +01:00
1b41a3e9cf
Introduce a few helpers to allocate/map/unmap several pages, which wrap around the MMU functionality
2022-11-19 22:28:45 +01:00
c886669d56
Break down operations to make protect_kernel_sections() more readable
2022-11-19 22:27:59 +01:00
d96cb73995
Rename physical "pages" to "frames"
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AFAIK, this is the proper naming scheme. "Pages" are virtual, and "frames" physical.
2022-11-19 22:27:08 +01:00
847f2b4f4c
Replace more usage of stdint.h types with Luna's Types.h
2022-11-19 22:25:03 +01:00
047f445651
Kernel: Add helpers to validate memory addresses
2022-11-19 18:38:47 +01:00
70c6b78e35
Organize source tree
2022-11-19 17:59:49 +01:00
cf758fdfdc
Initial commit :)
2022-11-13 10:09:09 +01:00
58fb422161
Kernel: Return a Result in MemoryManager and strdup_from_user
2022-11-12 11:56:40 +01:00
662afad426
Kernel: Add a Result class
2022-11-12 11:30:28 +01:00
1ea216dfd1
Kernel: Rename assert.h to ensure.h
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The macro is named "ensure", the header file should reflect that.
2022-11-09 15:28:35 +01:00
98da473fdc
Run clang-format
2022-11-08 19:07:43 +01:00
8f2308c80d
Kernel: Implement mmap-able device files (regular files are not mmap-able yet)
2022-11-02 20:24:07 +01:00
c604c074a1
Kernel: Rename ASSERT() to ensure()
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Doesn't get stripped on release builds, so it shouldn't be named assert.
2022-11-02 19:38:15 +01:00
22740e69bf
Kernel: Add support for the NX bit
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Not support, actually. We now REQUIRE it.
2022-11-02 18:34:57 +01:00
712f4f5e51
KernelHeap: Add more debug logging
2022-10-20 18:49:33 +02:00
b035795eb3
Kernel: Move errno.h and (k)assert.h out of the main include directory
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This is mostly so IDEs don't pick them up instead of the userspace headers :)
2022-10-19 17:41:23 +02:00
62d631f1b4
Kernel: Rename assert.h to kassert.h so IDEs pickup the kernel header instead of the userspace one
2022-10-15 12:56:48 +02:00
ee712432bd
Some more multiple address space stuff
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This page-faults. This is because the memory where the ELF should be is all zeroes, which the CPU tries to interpret.
2022-10-13 21:14:39 +02:00
83e6b8cd21
VMM: Fix naming convention
2022-10-13 18:42:53 +02:00
69a9f7f06a
Kernel: Move VMM from a class to a namespace
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Also, rename the ugly Paging::VirtualMemoryManager name to just 'VMM'. Which is now used instead of kernelVMM.
2022-10-12 20:02:25 +02:00
eaea4603c6
MemoryManager: Fix logging when built with debug logging
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That is to say, -DMM_DEBUG
2022-10-12 14:29:30 +02:00
d5f59b666a
Kernel/Memory: Use %p in printf
2022-10-08 18:21:02 +02:00
abcf1b6118
Define PAGE_SIZE as 4096 and use it everywhere instead of using 4096 as a magic number
2022-10-08 14:52:28 +02:00
