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• cbc1752e73 Working on reorganizing kernel.c pre-alpha Nathan Giddings 2023-12-16 09:51:02 -06:00
• df90bd7313 process struct now uses address_space struct Nathan Giddings 2023-11-09 23:00:12 -06:00
• 1375596310 Changed some length arguments to size_t in syscalls.h Nathan Giddings 2023-11-09 21:26:55 -06:00
• 61e5ebf513 Removed unused #include in sys/syscalls.h Nathan Giddings 2023-11-09 21:25:30 -06:00
• 58ae7f9f89 Removed syscallret_t typedef. Syscalls just return an int Nathan Giddings 2023-11-09 21:24:07 -06:00
• b4ea4b8ca1 Merged sighandler.h into sigaction.h Nathan Giddings 2023-11-09 21:19:13 -06:00
• f36fe615cc Wrote wrappers for each available system call Many calls aren't implemented, and simply return an error. Nathan Giddings 2023-11-09 21:17:08 -06:00
• c43b23bed3 Added sigaction.h and sighandler.h to installed headers Nathan Giddings 2023-11-09 21:16:22 -06:00
• e52948830e Added enum for future kernel log levels Nathan Giddings 2023-11-08 14:16:15 -06:00
• 31f7eb34a6 Renamed some syscalls Nathan Giddings 2023-11-08 14:15:46 -06:00
• c5ef8c53a7 Started separating important structs from kernel.c Nathan Giddings 2023-11-08 14:13:03 -06:00
• 108e04a8f0 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. Nathan Giddings 2023-11-07 12:44:23 -06:00
• 091830e508 Added constructor to x86 context Nathan Giddings 2023-11-07 12:37:33 -06:00
• 98528dbc4a Created x86/mp.h Nathan Giddings 2023-11-07 12:36:59 -06:00
• b9208aceba Created types/sigaction.h Nathan Giddings 2023-11-07 12:34:31 -06:00
• aa77b0e7a2 Created sighandler.h Nathan Giddings 2023-11-07 12:34:06 -06:00
• d4ed72cc46 Removed leading underscore from syscallarg.h Nathan Giddings 2023-11-07 12:33:42 -06:00
• 8e64741a9e Created types/syscallret.h Nathan Giddings 2023-11-07 12:33:24 -06:00
• 4b7cf4e04a Removed leading underscore from syscallarg.h Nathan Giddings 2023-11-07 12:33:04 -06:00
• 58d50a5e9a Removed leading underscore from physaddr.h Nathan Giddings 2023-11-07 12:32:42 -06:00
• 669ab6ba8a Removed leading underscore from pid.h Nathan Giddings 2023-11-07 12:32:04 -06:00
• 185d3f6677 Added function to delete contents of AVL tree Nathan Giddings 2023-11-07 12:31:16 -06:00
• 9fb5b69745 Deleted OS-DESIGN.md Nathan Giddings 2023-11-07 12:30:24 -06:00
• 85020f2254 Removed leading underscore in oid.h Nathan Giddings 2023-11-07 12:30:13 -06:00
• 2dafa56d4b Added document to describe design of OS ngiddings 2023-10-23 18:48:07 -05:00
• a5ce86147d Created small static library to wrap system call ABI Nathan Giddings 2023-09-07 00:58:57 -05:00
• 112b4204a7 Removed old commented-out lines from heap.c Nathan Giddings 2023-09-07 00:57:12 -05:00
• e258bfcc9f Moved kernel base 4MiB lower Nathan Giddings 2023-09-07 00:56:40 -05:00
• 43440310f2 Added type definitions for process and object IDs Nathan Giddings 2023-09-07 00:55:45 -05:00
• 365272e360 Added null pointer check to avltree constructor Nathan Giddings 2023-09-07 00:54:28 -05:00
• 08db5fe1f7 Kernel heap now allocates all required pages at once As opposed to allocating pages individually Nathan Giddings 2023-09-02 21:51:19 -05:00
• 29a528780b Added syscalls to map to particular physical address Nathan Giddings 2023-09-02 21:50:35 -05:00
• 75b7e08e96 Kernel page allocator and heap use new algorithms Nathan Giddings 2023-08-31 14:37:38 -05:00
• 8fa7fb77c8 Merge pull request #13 from ngiddings/pre-alpha master Nathan Giddings 2023-03-04 04:58:41 -06:00
• e49bd0ca9c Removed old commented-out code in heap.c Nathan Giddings 2023-03-03 04:58:44 -06:00
• 5cf5edd589 Rewrote heap.c to use libmalloc Nathan Giddings 2023-03-03 04:55:31 -06:00
• 14415fae9f set_pte_type now correctly sets flags Previously it erroneously set all flags regardless to flags argument Nathan Giddings 2023-03-03 04:54:54 -06:00
• a4e69e9e36 Kernel marks its own text segment as read-only Nathan Giddings 2023-03-03 04:53:25 -06:00
• 035960f4d3 Added new linker symbol pointing to end of read-only data Nathan Giddings 2023-03-03 04:52:58 -06:00
• f66810d6ad mmgr.c compatibility with changes to libmalloc Nathan Giddings 2023-03-03 04:52:26 -06:00
• f8cfca588e Fixed inline assembly constraints in msr.c Nathan Giddings 2023-03-03 04:51:20 -06:00
• 60775ee007 x86 putc() now copies chars to COM1 Nathan Giddings 2023-01-10 05:37:14 -06:00
• 6af84b247f Page allocation uses new external library, libmalloc Nathan Giddings 2023-01-09 01:56:09 -06:00
• 1be6de1a26 Removed outdated instructions in README Nathan Giddings 2023-01-08 21:31:23 -06:00
• c2d8f79e61 Fixed spelling error in 64-bit llog2() code Nathan Giddings 2023-01-07 23:21:36 -06:00
• 43e2f4318b Merge pull request #12 from ngiddings/pre-alpha Nathan Giddings 2023-01-07 18:39:10 -06:00
• 204b345942 Fixed mmgr.c Nathan Giddings 2022-12-30 17:14:37 -06:00
• c069866bc7 Buncha changes and fixes Nathan Giddings 2022-12-30 17:11:42 -06:00
• 166841da51 Added usermode interrupt handling Nathan Giddings 2022-12-21 11:37:13 -06:00
• 590290f92b Fixes and improvements in mmgr.c Bug fixes in page allocator Significant performance improvements ngiddings 2022-11-20 16:32:25 -06:00
• 8c6ce25a62 Create LICENSE Nathan Giddings 2022-08-24 06:40:13 -05:00
• ccc35bc4c2 Deleted now-unused struct page_stack_t ngiddings 2022-08-24 06:36:30 -05:00
• e621624ef0 Changed avl_get() to use loop instead of recursion ngiddings 2022-08-24 06:35:58 -05:00
• 0ad4314928 Merge pull request #11 from ngiddings/pre-alpha Nathan Giddings 2022-08-24 06:24:57 -05:00
• fc1ef8abf3 Started writing README ngiddings 2022-08-24 06:24:27 -05:00
• 41bf710cbc Merge pull request #10 from ngiddings/pre-alpha Nathan Giddings 2022-08-23 13:15:35 -05:00
• 8b1d7cb085 Kernel initializes a stack for new processes ngiddings 2022-08-23 13:13:46 -05:00
• bacedbea86 Rewrote physical memory allocator ngiddings 2022-08-23 13:00:26 -05:00
• 54e2beefc1 Fixed warning in syscall.c Cast NULL to 'unsigned long' to get rid of compiler warning. ngiddings 2022-08-23 12:58:28 -05:00
• 2f7d39e679 Improved error handling in queue.c ngiddings 2022-08-23 12:56:45 -05:00
• 9c37167c5e Changed #include guards in physaddr.h, added now error codes ngiddings 2022-08-23 12:55:39 -05:00
• f76b8cab43 Changed #include guards in physaddr.h ngiddings 2022-08-23 12:55:07 -05:00
• 2cc9c6942e Fixed call to __builtin_clz() ngiddings 2022-08-23 08:46:34 -05:00
• b8cec93721 Put 'math.c' into Makefile.am ngiddings 2022-08-23 08:42:59 -05:00
• 21509be9bc Added 'math.c' for optimized math and bit operations ngiddings 2022-08-23 08:41:53 -05:00
• c36f65ce97 Various renaming and refactoring ngiddings 2022-08-19 22:34:45 -05:00
• 0337fca749 Moved syscall IDs to separate header ngiddings 2022-08-19 06:06:48 -05:00
• e4caef6d72 Merge pull request #9 from ngiddings/pre-alpha Nathan Giddings 2022-08-19 03:57:21 -05:00
• 164fb9fcae Added simple IPC syscalls ngiddings 2022-08-19 03:56:53 -05:00
• 9c82a39097 Merge pull request #8 from ngiddings/master Nathan Giddings 2022-08-17 18:25:25 -05:00
• 0ae4f7995d Added basic IPC syscalls ngiddings 2022-08-17 02:47:41 -05:00
• bfb56fcbb3 Added functions to portably manipulate process context ngiddings 2022-08-17 01:41:59 -05:00
• bbf2325a60 Added constructor to queue ngiddings 2022-08-17 01:41:19 -05:00
• 5b959c9763 Added queue structure ngiddings 2022-08-15 20:20:31 -05:00
• bdb0b753a3 Fixed multiple definition error Nathan Giddings 2022-07-23 04:03:00 -05:00
• 03968c33eb Redefined message struct ngiddings 2022-07-23 02:22:18 -05:00
• d84c9c86d0 Removed some unused code ngiddings 2022-07-05 18:06:19 -05:00
• 958b717751 Fixed state save after process preemption ngiddings 2022-07-05 15:19:20 -05:00
• d4b36a7c7d Return the previous process to queue after context switch ngiddings 2022-07-05 15:18:51 -05:00
• 5c7d002bbf Moved PCB for each process to kernel heap ngiddings 2022-07-03 13:17:06 -05:00
• e3026b2601 Removed unneeded #include from elf.h ngiddings 2022-06-15 16:07:01 -05:00
• 38d9ee4737 Removed unneeded #include from heap.h ngiddings 2022-06-15 16:05:40 -05:00
• da04d019c6 Merge pull request #7 from ngiddings/pre-alpha Nathan Giddings 2022-06-15 16:03:06 -05:00
• a52f06f81e Massive backlog of changes ngiddings 2022-06-15 15:59:31 -05:00
• c962a83ff0 WIP on kernel syscalls ngiddings 2021-05-01 17:09:50 -05:00
• 7caf49065d page stack constructor takes stack base as argument initialize() calls new constructors and fills in syscall table ngiddings 2021-04-19 06:58:02 -05:00
• 8605f08405 Changed DPL of syscall interrupt to 3 ngiddings 2021-04-19 06:57:05 -05:00
• a68503538b putc() advances lines when screen is full ngiddings 2021-04-19 06:56:49 -05:00
• c5ca5e82a7 Added more status codes ngiddings 2021-04-19 06:56:12 -05:00
• 7300b9ecd6 Fixed broken ELF loader Only binaries less than a page long would load correctly. ngiddings 2021-04-19 06:56:03 -05:00
• 470e39e8e8 Added support for page types in mmgr ngiddings 2021-04-19 06:55:27 -05:00
• a5e9d852ab Implemented do_syscall() Wrote constructor for kernel state Added syscall table ngiddings 2021-04-19 06:54:34 -05:00
• 755f2a3d69 Wrote syscall interrupt handler in assembly ngiddings 2021-04-19 06:53:39 -05:00
• 0af53bcfc8 Moved config.h to include/ ngiddings 2021-04-19 06:52:02 -05:00
• 6df3f203b8 Added source file for syscalls ngiddings 2021-04-19 06:51:48 -05:00
• 6b73aff3d0 Merge pull request #6 from ngiddings/pre-alpha Nathan Giddings 2021-04-19 03:42:05 -05:00
• 5efc389935 Finished basic task switching mechansim PCB is local to a process's address space. Context switches are written in assembly. Moved x86 headers to include/x86 ngiddings 2021-04-19 03:40:33 -05:00
• 086dfe546a GRUB config file loads modules at boot ngiddings 2021-04-18 08:00:56 -05:00
• 40da57e233 APIC enabled after running kernel state constructors ngiddings 2021-04-18 02:10:56 -05:00
• 625bbb04a8 Debug message printed before loading task context ngiddings 2021-04-18 02:10:33 -05:00