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Code Issues Projects Releases Wiki Activity
354 Commits 3 Branches 4 Tags 6.4 MiB
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Commit Graph

344 Commits

Author SHA1 Message Date
Stephen Marz
e811451879 Clean up context switch code. 2020-05-17 17:30:10 -04:00
Stephen Marz
ba661749fc Don't let scheduler grab a lock. If it can't get the lock, then go back to the process that caused this. 2020-05-17 15:26:20 -04:00
Stephen Marz
f5c94e377b Protect the process list using mutex. 2020-05-17 15:20:30 -04:00
Stephen Marz
43e18b498d Don't grab the table unless we really need it. 2020-05-17 15:13:53 -04:00
Stephen Marz
fe023e026e Add testing printout. 2020-05-17 15:08:01 -04:00
Stephen Marz
9326255507 Get rid of unnecessary cast. 2020-05-17 15:07:03 -04:00
Stephen Marz
d6843c1b20 Create an exec system call and move loading an ELF file into that. 2020-05-17 15:06:30 -04:00
Stephen Marz
c68a0db582 We will need an exec type system call. The majority of the test code will need to work in there. 2020-05-16 12:17:58 -04:00
Stephen Marz
e3e8ba8ae6 Missed a register in the trap frame 2020-05-16 10:58:13 -04:00
Stephen Marz
c2ef6130fb Use a map for environment variables in a process. 2020-05-16 10:43:21 -04:00
Stephen Marz
2d74b6e6fa Formatting 2020-05-16 10:41:38 -04:00
Stephen Marz
23bca871a6 Change Buffer to accept usize and implement Clone 2020-05-15 19:36:24 -04:00
Stephen Marz
ff064acb3b Replace after take for open 2020-05-15 14:43:44 -04:00
Stephen Marz
720d084364 During a trap, only save the FPU if the process changed them. 2020-05-15 13:11:19 -04:00
Stephen Marz
3793ad1e87 Added kernel support for floating point registers. 2020-05-15 13:01:57 -04:00
Stephen Marz
c649947707 Added Registers to CPU so we don't have to hardcode the register number. This makes it easier to read and figure out what's happening 2020-05-15 12:48:05 -04:00
Stephen Marz
adcc06d07a Update syntax. 2020-05-15 12:38:48 -04:00
Stephen Marz
8a0c87a103 use &str instead of String for paths. 2020-05-15 12:36:49 -04:00
Stephen Marz
c435371969 Updates 2020-05-15 12:35:29 -04:00
Stephen Marz
9de528877c Updates 2020-05-15 12:35:18 -04:00
Stephen Marz
26947251be Add warnings 2020-05-15 12:32:39 -04:00
Stephen Marz
3dd49c615e Use global cache. fs::init will now check to see if the global cache is good or not. If it is already good, do nothing, otherwise cache the inodes. 2020-05-15 12:29:59 -04:00
Stephen Marz
8e414c62be Use Result instead of Option with LoadErrors 2020-05-15 12:11:28 -04:00
Stephen Marz
4a9aa3f658 Add comments 2020-05-15 12:05:18 -04:00
Stephen Marz
33f701e7ca Formatted elf.rs 2020-05-15 12:03:24 -04:00
Stephen Marz
1de325b325 Add load_proc to load an ELF and give a process. 2020-05-15 12:01:03 -04:00
Stephen Marz
c74316adb5 Added ELF loader in elf.rs 2020-05-15 11:46:51 -04:00
Stephen Marz
bb4f3bc0a6 Move BlockBuffer to buffer.rs and renamed to Buffer. 2020-05-15 11:46:42 -04:00
Stephen Marz
f781c511f4 Let Rust figure out the data type String 2020-05-15 11:12:07 -04:00
Stephen Marz
9d6ee9fb35 Added comments and shrunk string 2020-05-15 11:11:20 -04:00
Stephen Marz
69c7e6c390 Reformatted 2020-05-15 11:00:51 -04:00
Stephen Marz
e1b2150f1b Reduce stack size to 5 pages 2020-05-15 10:54:02 -04:00
Stephen Marz
f8fad1804f Updated file string to avoid creating strings twice in test. 2020-05-15 10:40:37 -04:00
Stephen Marz
5b5e5d9e2b Fix warnings 2020-05-15 10:37:40 -04:00
Stephen Marz
6367e064cf Reworked file system, still much to do, however, now we can get a file by its name instead of inode number. 2020-05-15 10:34:37 -04:00
Stephen Marz
ea33bfe629 Added starting point for GPU code. 2020-05-15 10:34:22 -04:00
Stephen Marz
723963e1ec Resolved 2020-05-01 19:11:42 -04:00
Stephen Marz
21f16b4754 Resolved 2020-05-01 19:10:56 -04:00
Stephen Marz
6cd64c84bf Do not spin lock in an interrupt context, and also add feedback to the caller. 2020-05-01 19:02:58 -04:00
Stephen Marz
fe5a909335 Create a system call to add a process to prevent data race with the process list. 2020-05-01 18:59:38 -04:00
Stephen Marz
30fcd7894a Change lock to try_lock to better align with Rust's verbiage 2020-04-27 09:46:59 -04:00
Stephen Marz
d49ea6e040 Changed formatting settings. 2020-04-26 22:12:00 -04:00
Stephen Marz
532b246f7b Added locking to the scheduler. Since this is invoked so often, it causes a race with the test_elf process. 2020-04-26 21:08:29 -04:00
Stephen Marz
ef0997be74 Add documentation for Mutex 2020-04-26 20:28:20 -04:00
Stephen Marz
a1f9d2c6cd Add Mutex to process list. 2020-04-26 20:11:01 -04:00
Stephen Marz
03018cb55f Removed warnings 2020-04-26 15:55:22 -04:00
Stephen Marz
7dfe0b8182 Run cargo fix 2020-04-26 15:53:26 -04:00
Stephen Marz
3d43bbd93c asm is deprecated in Rust as my compiler warned me. So, let's switch to llvm_asm 2020-04-26 15:52:08 -04:00
Stephen Marz
591f0fdff8 Get rid of useless header. 2020-04-26 14:58:28 -04:00
Stephen Marz
29100f10ae Updated comments 2020-04-26 14:05:50 -04:00
Stephen Marz
af29a0d267 Removed make_hdd.sh, it stores random bytes, now we have a filesystem 2020-04-26 13:55:08 -04:00
Stephen Marz
d62d3f3816 Added more rigorous test, fixed bug in ELF loader 2020-04-26 09:26:41 -04:00
Stephen Marz
bc6ef9d689 Fixed ELF loader and added offset. 2020-04-26 09:19:07 -04:00
Stephen Marz
8f61253aea Removed old code and added comments. 2020-04-26 08:51:25 -04:00
Stephen Marz
cc3b78973c Rearranged code, added comments. 2020-04-26 08:43:03 -04:00
Stephen Marz
42c14bf930 Check and use permission bits in ELF for user pages. 2020-04-26 08:40:43 -04:00
Stephen Marz
fa1a728bd9 Changed to run test_elf for ELF files 2020-04-26 08:34:00 -04:00
Stephen Marz
074dc9547a Now we read ELF files instead of raw binaries 2020-04-26 08:33:49 -04:00
Stephen Marz
de97ebf12d Added ELF structures for reading ELF files. 2020-04-26 08:33:25 -04:00
Stephen Marz
06894d3aff Move BlockBuffer into fs. 2020-04-26 07:12:38 -04:00
Stephen Marz
25009aaa3c Fixed bug in locating the inode. 2020-04-26 07:12:27 -04:00
Stephen Marz
fac882ea73 Clean up scheduler code. 2020-04-25 23:27:00 -04:00
Stephen Marz
fd9c9449b0 Allow sleeping processes that are awoken to immediately execute. 2020-04-25 23:26:14 -04:00
Stephen Marz
60edb9f72a Remove the dumb done flag. 2020-04-25 23:24:55 -04:00
Stephen Marz
58b73e2208 Added tons of comments. 2020-04-25 22:25:32 -04:00
Stephen Marz
b8029e76ac Make helloworld.cpp print a pointer so we can see how we directly affect 
the stack.
 2020-04-25 21:44:11 -04:00
Stephen Marz
f771883cb0 Added satp_fence. Probably don't need this since we don't reuse pids. 2020-04-25 21:44:05 -04:00
Stephen Marz
eab4a20a61 Added calculations to helloworld 2020-04-25 21:35:32 -04:00
Stephen Marz
0c649f5370 Change wording of helloworld.cpp so it's recognizable when printed to the screen. 2020-04-25 21:24:21 -04:00
Stephen Marz
1627cc7733 Read and start a process...Added userspace library...will switch this to newlib later. 2020-04-25 21:23:00 -04:00
Stephen Marz
cbff6afeca Added comments. 2020-04-25 19:51:27 -04:00
Stephen Marz
cb06702afa Act more like Rust by adding _mut() for those functions that return mutable references or pointers. 2020-04-25 19:36:58 -04:00
Stephen Marz
e5f3eb7f6b Removed mapping the kernel memory into a process' virtual address space. 2020-04-25 19:34:20 -04:00
Stephen Marz
84e5126d29 Added formatting, made syscall.rs clearer to read. 2020-04-25 18:48:23 -04:00
Stephen Marz
056ef5bb2d Added dump_registers as syscall 1--for debugging purposes. 2020-04-25 18:25:18 -04:00
Stephen Marz
d86c65a380 Added comments and removed llvm_asm -- it looks like I'll have to use this in the future 2020-04-25 17:34:06 -04:00
Stephen Marz
018faea21e Check for a 0 zone before adding to blocks seen. 2020-04-25 16:47:13 -04:00
Stephen Marz
3eb61ad188 Remove redundant variable 2020-04-25 16:41:43 -04:00
Stephen Marz
bb4e2d118a Minix reads Direct, Indirect, Doubly-indirect, and Triply-indirect zones 2020-04-25 16:39:50 -04:00
Stephen Marz
0de9b23b17 Change test and added comments 2020-04-25 16:06:29 -04:00
Stephen Marz
080a529f01 Reading up to indirect pointers 2020-04-25 15:15:25 -04:00
Stephen Marz
c2fb6cf90d Fix system calls. Size always comes first now, followed by offset. 2020-04-25 14:16:03 -04:00
Stephen Marz
787f886b6f Clean up code, added deleting a process if a user process causes a fault. 2020-04-24 22:19:41 -04:00
Stephen Marz
bb74161466 Remove use 2020-04-24 19:58:29 -04:00
Stephen Marz
2eb8acabd7 Remove syscall_exit, kernel processes will return via RA 2020-04-24 19:55:49 -04:00
Stephen Marz
71702acd43 Added comments and formatted. 2020-04-24 19:30:00 -04:00
Stephen Marz
0d924e6fab Fixed not waking up the process who made the request. 2020-04-24 19:26:44 -04:00
Stephen Marz
4c31f8c563 Add inode number to fs_read 2020-04-24 19:22:27 -04:00
Stephen Marz
a113db700a Added RA to call syscall_exit for kernel processes. 2020-04-24 19:16:45 -04:00
Stephen Marz
8ae5ebb085 Added syscall_block_read and syscall_fs_read. 2020-04-24 18:56:32 -04:00
Stephen Marz
8081863709 Fix inits loop. We will use WFI to avoid hogging resources. 2020-04-24 18:48:19 -04:00
Stephen Marz
e0a8be5522 Don't let init sleep. This will cause us to hang in the scheduler. 2020-04-24 18:47:49 -04:00
Stephen Marz
58ab3f3b6f Don't let init sleep. This will cause us to hang in the scheduler. 2020-04-24 18:46:31 -04:00
Stephen Marz
73636c1de1 Updates to add a process for a file system read in the system call. 2020-04-24 18:37:48 -04:00
Stephen Marz
2e48b86656 Auto-drop processes, and added delete process. 2020-04-24 15:22:57 -04:00
Stephen Marz
a60d84ed98 Start adding block device stuff and file system stuff. Added test for block driver as a process. 2020-04-24 14:39:56 -04:00
Stephen Marz
599627b74a Updated to allow for system calls that change process state 2020-04-24 14:39:33 -04:00
Stephen Marz
e39f6b71c5 Added information for release builds 2020-04-21 20:31:27 -04:00
Stephen Marz
625df1cf46 Added testing shell, no testing, yet. 2020-04-21 20:30:09 -04:00
Stephen Marz
da92f55d1b Added codegen-units to avoid SEGV 2020-04-21 20:27:13 -04:00