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f36fe615cc
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Wrote wrappers for each available system call
Many calls aren't implemented, and simply return an error.
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2023-11-09 21:17:08 -06:00 |
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c43b23bed3
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Added sigaction.h and sighandler.h to installed headers
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2023-11-09 21:16:22 -06:00 |
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e52948830e
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Added enum for future kernel log levels
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2023-11-08 14:16:15 -06:00 |
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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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98528dbc4a
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Created x86/mp.h
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2023-11-07 12:36:59 -06:00 |
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b9208aceba
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Created types/sigaction.h
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2023-11-07 12:34:31 -06:00 |
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aa77b0e7a2
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Created sighandler.h
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2023-11-07 12:34:06 -06:00 |
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d4ed72cc46
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Removed leading underscore from syscallarg.h
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2023-11-07 12:33:42 -06:00 |
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8e64741a9e
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Created types/syscallret.h
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2023-11-07 12:33:24 -06:00 |
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4b7cf4e04a
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Removed leading underscore from syscallarg.h
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2023-11-07 12:33:04 -06:00 |
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58d50a5e9a
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Removed leading underscore from physaddr.h
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2023-11-07 12:32:42 -06:00 |
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669ab6ba8a
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Removed leading underscore from pid.h
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2023-11-07 12:32:04 -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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9fb5b69745
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Deleted OS-DESIGN.md
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2023-11-07 12:30:24 -06:00 |
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85020f2254
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Removed leading underscore in oid.h
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2023-11-07 12:30:13 -06:00 |
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2dafa56d4b
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Added document to describe design of OS
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2023-10-23 18:48:07 -05:00 |
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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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43440310f2
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Added type definitions for process and object IDs
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2023-09-07 00:55:45 -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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1be6de1a26
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Removed outdated instructions in README
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2023-01-08 21:31:23 -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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fc1ef8abf3
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Started writing README
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2022-08-24 06:24:27 -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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9c37167c5e
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Changed #include guards in physaddr.h, added now error codes
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2022-08-23 12:55:39 -05:00 |
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