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
8f310dd307
PMM: Map the page bitmap to kernel heap once the PMM and VMM are both initialized
2022-10-04 18:36:09 +02:00
e769cb45a7
MemoryManager: add get_page_at and get_pages_at functions to map any physical memory at a fixed virtual address (inverse of get_mapping and get_mappings)
2022-10-01 12:12:50 +02:00
a078a11dde
Move PMM and VMM initialization into MemoryManager::init
2022-09-25 17:38:17 +02:00
704a23d0ad
Sanity checks
2022-09-24 23:09:39 +02:00
2511b7d7a1
Add optional (compile-opt-in) debug logging to the MemoryManager (which helped catch the bug that got fixed in the previous commit)
2022-09-24 22:38:07 +02:00
3891d0c52e
Rename KernelMemoryManager to MemoryManager
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Kind of a more catchy name, isn't it?
2022-09-24 21:45:13 +02:00
