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31f7eb34a6
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Renamed some syscalls
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2023-11-08 14:15:46 -06:00 |
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c5ef8c53a7
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Started separating important structs from kernel.c
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2023-11-08 14:13:03 -06:00 |
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108e04a8f0
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Page fault handler now allocates new page tables
Rather than contantly checking if a page table exists before access, the fault handler will automatically allocate them as needed.
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2023-11-07 12:44:23 -06:00 |
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091830e508
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Added constructor to x86 context
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2023-11-07 12:37:33 -06:00 |
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185d3f6677
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Added function to delete contents of AVL tree
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2023-11-07 12:31:16 -06:00 |
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a5ce86147d
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Created small static library to wrap system call ABI
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2023-09-07 00:58:57 -05:00 |
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112b4204a7
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Removed old commented-out lines from heap.c
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2023-09-07 00:57:12 -05:00 |
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e258bfcc9f
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Moved kernel base 4MiB lower
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2023-09-07 00:56:40 -05:00 |
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365272e360
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Added null pointer check to avltree constructor
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2023-09-07 00:54:28 -05:00 |
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08db5fe1f7
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Kernel heap now allocates all required pages at once
As opposed to allocating pages individually
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2023-09-02 21:51:19 -05:00 |
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29a528780b
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Added syscalls to map to particular physical address
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2023-09-02 21:50:35 -05:00 |
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75b7e08e96
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Kernel page allocator and heap use new algorithms
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2023-08-31 14:37:38 -05:00 |
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e49bd0ca9c
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Removed old commented-out code in heap.c
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2023-03-03 04:58:44 -06:00 |
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5cf5edd589
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Rewrote heap.c to use libmalloc
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2023-03-03 04:55:31 -06:00 |
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14415fae9f
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set_pte_type now correctly sets flags
Previously it erroneously set all flags regardless to `flags` argument
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2023-03-03 04:54:54 -06:00 |
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a4e69e9e36
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Kernel marks its own text segment as read-only
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2023-03-03 04:53:25 -06:00 |
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035960f4d3
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Added new linker symbol pointing to end of read-only data
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2023-03-03 04:52:58 -06:00 |
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f66810d6ad
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mmgr.c compatibility with changes to libmalloc
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2023-03-03 04:52:26 -06:00 |
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f8cfca588e
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Fixed inline assembly constraints in msr.c
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2023-03-03 04:51:20 -06:00 |
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60775ee007
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x86 putc() now copies chars to COM1
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2023-01-10 05:37:14 -06:00 |
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6af84b247f
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Page allocation uses new external library, libmalloc
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2023-01-09 01:56:09 -06:00 |
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c2d8f79e61
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Fixed spelling error in 64-bit llog2() code
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2023-01-07 23:21:36 -06:00 |
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204b345942
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Fixed mmgr.c
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2022-12-30 17:14:37 -06:00 |
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c069866bc7
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Buncha changes and fixes
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2022-12-30 17:11:42 -06:00 |
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166841da51
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Added usermode interrupt handling
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2022-12-21 11:37:13 -06:00 |
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590290f92b
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Fixes and improvements in mmgr.c
Bug fixes in page allocator
Significant performance improvements
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2022-11-20 16:32:25 -06:00 |
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ccc35bc4c2
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Deleted now-unused struct page_stack_t
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2022-08-24 06:36:30 -05:00 |
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e621624ef0
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Changed avl_get() to use loop instead of recursion
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2022-08-24 06:35:58 -05:00 |
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8b1d7cb085
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Kernel initializes a stack for new processes
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2022-08-23 13:13:46 -05:00 |
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bacedbea86
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Rewrote physical memory allocator
The physical memory allocator now uses a buddy allocator instead of a stack.
Also moved some of the platform-independent context code to kernel.c.
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2022-08-23 13:00:26 -05:00 |
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54e2beefc1
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Fixed warning in syscall.c
Cast NULL to 'unsigned long' to get rid of compiler warning.
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2022-08-23 12:58:28 -05:00 |
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2f7d39e679
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Improved error handling in queue.c
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2022-08-23 12:56:45 -05:00 |
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2cc9c6942e
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Fixed call to __builtin_clz()
ilog2() erroneously called __builtin_clzl() instead of __builtin_clz()
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2022-08-23 08:46:34 -05:00 |
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b8cec93721
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Put 'math.c' into Makefile.am
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2022-08-23 08:42:59 -05:00 |
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21509be9bc
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Added 'math.c' for optimized math and bit operations
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2022-08-23 08:41:53 -05:00 |
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c36f65ce97
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Various renaming and refactoring
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2022-08-19 22:34:45 -05:00 |
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0337fca749
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Moved syscall IDs to separate header
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2022-08-19 06:06:48 -05:00 |
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164fb9fcae
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Added simple IPC syscalls
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2022-08-19 03:56:53 -05:00 |
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0ae4f7995d
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Added basic IPC syscalls
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2022-08-17 02:47:41 -05:00 |
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bfb56fcbb3
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Added functions to portably manipulate process context
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2022-08-17 01:41:59 -05:00 |
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bbf2325a60
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Added constructor to queue
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2022-08-17 01:41:19 -05:00 |
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5b959c9763
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Added queue structure
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2022-08-15 20:20:31 -05:00 |
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d84c9c86d0
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Removed some unused code
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2022-07-05 18:06:19 -05:00 |
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958b717751
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Fixed state save after process preemption
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2022-07-05 15:19:20 -05:00 |
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d4b36a7c7d
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Return the previous process to queue after context switch
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2022-07-05 15:18:51 -05:00 |
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5c7d002bbf
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Moved PCB for each process to kernel heap
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2022-07-03 13:17:06 -05:00 |
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a52f06f81e
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Massive backlog of changes
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2022-06-15 15:59:31 -05:00 |
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c962a83ff0
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WIP on kernel syscalls
|
2021-05-01 17:09:50 -05:00 |
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7caf49065d
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page stack constructor takes stack base as argument
initialize() calls new constructors and fills in syscall table
|
2021-04-19 06:58:02 -05:00 |
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8605f08405
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Changed DPL of syscall interrupt to 3
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2021-04-19 06:57:05 -05:00 |
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