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voyage-au-centre-des-fichiers.git
20 months agoWrote a new spec for the syscalls
Amelia Coutard [Mon, 13 Mar 2023 14:22:22 +0000 (15:22 +0100)]
Wrote a new spec for the syscalls

20 months agoMoved the loading of the elf program before the aquisition of most physical memory...
Amelia Coutard [Mon, 13 Mar 2023 14:14:51 +0000 (15:14 +0100)]
Moved the loading of the elf program before the aquisition of most physical memory, in order to allow for freeing the corresponding multiboot module more easily

20 months agoChanged basically nothing
Amelia Coutard [Mon, 13 Mar 2023 13:48:40 +0000 (14:48 +0100)]
Changed basically nothing

20 months agoFixed mmap_print syscall, to work with the new processes data structures
Amelia Coutard [Sat, 11 Mar 2023 01:11:37 +0000 (02:11 +0100)]
Fixed mmap_print syscall, to work with the new processes data structures

20 months agoAdded automatic page mapping on some page faults. Also fixed a critical bug in the...
Amelia Coutard [Sat, 11 Mar 2023 01:09:12 +0000 (02:09 +0100)]
Added automatic page mapping on some page faults. Also fixed a critical bug in the implementation of interrupt handlers with a error code

20 months agoMoved elf loading to elf64.?pp, added the start of the needed architecture for multip...
Amelia Coutard [Fri, 10 Mar 2023 17:06:39 +0000 (18:06 +0100)]
Moved elf loading to elf64.?pp, added the start of the needed architecture for multiple processes and IPC

20 months agoAvoided future, and probably current, problems by enabling -fno-strict-aliasing
Amelia Coutard [Fri, 10 Mar 2023 17:04:18 +0000 (18:04 +0100)]
Avoided future, and probably current, problems by enabling -fno-strict-aliasing

20 months agoAdded syscall to show userspace vmemory, to make debugging the kernel easier
Amelia Coutard [Mon, 6 Mar 2023 19:14:57 +0000 (20:14 +0100)]
Added syscall to show userspace vmemory, to make debugging the kernel easier

20 months agoRemoved global bit on the low-memory mapping of the kernel: it was a mistake
Amelia Coutard [Mon, 6 Mar 2023 16:09:48 +0000 (17:09 +0100)]
Removed global bit on the low-memory mapping of the kernel: it was a mistake

20 months agoAdded the global bit to all pages in the higher half
Amelia Coutard [Sun, 5 Mar 2023 23:45:34 +0000 (00:45 +0100)]
Added the global bit to all pages in the higher half

20 months agoEdited os::paging::setup_pages a bit. Notably, the global bit is now set for all...
Amelia Coutard [Sun, 5 Mar 2023 23:40:35 +0000 (00:40 +0100)]
Edited os::paging::setup_pages a bit. Notably, the global bit is now set for all hhigher-half memory

20 months agoEdited comments a tiny bit
Amelia Coutard [Sun, 5 Mar 2023 22:43:58 +0000 (23:43 +0100)]
Edited comments a tiny bit

20 months agoUsed different comment symbol for .S files copyright & licence notices
Amelia Coutard [Sun, 5 Mar 2023 18:57:14 +0000 (19:57 +0100)]
Used different comment symbol for .S files copyright & licence notices

20 months agoEnable global bit for paging
Amelia Coutard [Sun, 5 Mar 2023 18:56:36 +0000 (19:56 +0100)]
Enable global bit for paging

20 months agoMoved most asm simple utils to utils.?pp. Also fixed invlpg usage
Amelia Coutard [Sun, 5 Mar 2023 17:58:08 +0000 (18:58 +0100)]
Moved most asm simple utils to utils.?pp. Also fixed invlpg usage

20 months agoMoved the code to initialise an empty page in the PML4T to paging.cpp
Amelia Coutard [Sun, 5 Mar 2023 03:00:02 +0000 (04:00 +0100)]
Moved the code to initialise an empty page in the PML4T to paging.cpp

20 months agoMerged stuff because I be silly
Amelia Coutard [Sun, 5 Mar 2023 02:58:32 +0000 (03:58 +0100)]
Merged stuff because I be silly

20 months agoAdded IPC design to doc.txt
Amelia Coutard [Sun, 5 Mar 2023 02:54:37 +0000 (03:54 +0100)]
Added IPC design to doc.txt

20 months agoAdded basic API for IPC in doc.txt. Not implemented yet
Amelia Coutard [Sat, 4 Mar 2023 02:12:34 +0000 (03:12 +0100)]
Added basic API for IPC in doc.txt. Not implemented yet

20 months agoAdded support for haing multiple different syscalls (via a call jump table)
Amelia Coutard [Wed, 1 Mar 2023 14:19:32 +0000 (15:19 +0100)]
Added support for haing multiple different syscalls (via a call jump table)

20 months agoFixed elf page-alignment necessity. Now only requires no page overlap
Amelia Coutard [Wed, 1 Mar 2023 13:57:54 +0000 (14:57 +0100)]
Fixed elf page-alignment necessity. Now only requires no page overlap

20 months agoRemoved assert that had become useless.
Amelia Coutard [Wed, 1 Mar 2023 13:09:38 +0000 (14:09 +0100)]
Removed assert that had become useless.

20 months agoAdded naming information to doc.txt
Amelia Coutard [Wed, 1 Mar 2023 01:17:23 +0000 (02:17 +0100)]
Added naming information to doc.txt

20 months agoFixed naming (amycros still present in some places). Also fixed .gitignore for naming...
Amelia Coutard [Wed, 1 Mar 2023 01:12:19 +0000 (02:12 +0100)]
Fixed naming (amycros still present in some places). Also fixed .gitignore for naming and test_module (special case no longer needed)

20 months agoAdded a doc.txt file to specify the kernel documentation, and added a corresponding...
Amelia Coutard [Tue, 28 Feb 2023 22:24:56 +0000 (23:24 +0100)]
Added a doc.txt file to specify the kernel documentation, and added a corresponding assert in the code

Currently, the documentation specifies how virtual memory is used.
The added assert ensures that any loaded elf program's segments are within the specified bounds.

20 months agoAdded missing copyright & licence disclaimers, and fixed the existing ones
Amelia Coutard [Tue, 28 Feb 2023 21:21:28 +0000 (22:21 +0100)]
Added missing copyright & licence disclaimers, and fixed the existing ones

20 months agoRemoved the linker script from the test module: it was unneeded
Amelia Coutard [Tue, 28 Feb 2023 20:52:59 +0000 (21:52 +0100)]
Removed the linker script from the test module: it was unneeded

20 months agoFixed namespace-ending comments where that was needed
Amelia Coutard [Tue, 28 Feb 2023 01:35:20 +0000 (02:35 +0100)]
Fixed namespace-ending comments where that was needed

20 months agoRemoved some logging
Amelia Coutard [Tue, 28 Feb 2023 01:34:35 +0000 (02:34 +0100)]
Removed some logging

20 months agoFixed bug in page counting for elf file loading. Added support for writeable segments...
Amelia Coutard [Mon, 27 Feb 2023 16:55:49 +0000 (17:55 +0100)]
Fixed bug in page counting for elf file loading. Added support for writeable segments of elf files (RO is still RO)

20 months agoAdded missing stack to ftl_to_userspace
Amelia Coutard [Mon, 27 Feb 2023 12:32:10 +0000 (13:32 +0100)]
Added missing stack to ftl_to_userspace

20 months agoImplemented an elf64 loader for test_module
Amelia Coutard [Mon, 27 Feb 2023 11:47:20 +0000 (12:47 +0100)]
Implemented an elf64 loader for test_module

20 months agoEdited Makefile a bit to make it cleaner
Amelia Coutard [Mon, 27 Feb 2023 00:39:56 +0000 (01:39 +0100)]
Edited Makefile a bit to make it cleaner

20 months agoRevamped build system, and rewrote test module to be simpler and more correct (though...
Amelia Coutard [Sun, 26 Feb 2023 22:58:04 +0000 (23:58 +0100)]
Revamped build system, and rewrote test module to be simpler and more correct (though still not actually just producing an elf. Coming soon)

20 months agoMoved .section .text where it makes sense
Amelia Coutard [Sun, 26 Feb 2023 14:28:37 +0000 (15:28 +0100)]
Moved .section .text where it makes sense

20 months agoMoved some source files to a `lib` directory.
Amelia Coutard [Sat, 25 Feb 2023 15:08:23 +0000 (16:08 +0100)]
Moved some source files to a `lib` directory.

20 months agoAdded missing stuff to the .gitignore
Amelia Coutard [Sat, 25 Feb 2023 13:15:03 +0000 (14:15 +0100)]
Added missing stuff to the .gitignore

20 months agoChanged the text printed by the userspace a bit
Amelia Coutard [Sat, 25 Feb 2023 13:14:15 +0000 (14:14 +0100)]
Changed the text printed by the userspace a bit

20 months agoUpdated gcc version in the Makefile hack
Amelia Coutard [Sat, 25 Feb 2023 13:13:37 +0000 (14:13 +0100)]
Updated gcc version in the Makefile hack

20 months agoChanged the logged text a bit
Amelia Coutard [Sat, 25 Feb 2023 13:12:49 +0000 (14:12 +0100)]
Changed the logged text a bit

2 years agoMade it so arg_n have to all be specified or all missing, no weird combining of the...
Amelia Coutard [Sun, 16 Oct 2022 00:12:37 +0000 (02:12 +0200)]
Made it so arg_n have to all be specified or all missing, no weird combining of the two. Also added convertion to a common type, to instanciate less occurences of print_nth_helper::operator%

2 years agoFixed error in rule for creating isodir/boot/test-module
Amelia Coutard [Sun, 16 Oct 2022 00:09:51 +0000 (02:09 +0200)]
Fixed error in rule for creating isodir/boot/test-module

2 years agoAdded actual string formatting to the printing.
Amelia Coutard [Sat, 15 Oct 2022 10:01:17 +0000 (12:01 +0200)]
Added actual string formatting to the printing.

2 years agoAdded start symbol, to start transitioning the module to elf64
Amelia Coutard [Fri, 14 Oct 2022 14:17:48 +0000 (16:17 +0200)]
Added start symbol, to start transitioning the module to elf64

2 years agoFixed bug about dependencies in the kernel's module.mk
Amelia Coutard [Fri, 14 Oct 2022 07:07:03 +0000 (09:07 +0200)]
Fixed bug about dependencies in the kernel's module.mk

2 years agoAdded the userspace module to the repo
Amelia Coutard [Thu, 13 Oct 2022 23:38:56 +0000 (01:38 +0200)]
Added the userspace module to the repo

It's not made to last, so don't worry about the lack of cleanness. I'll
implement elf64 soon-ish.

2 years agoAdded CC0 licence (for Makefiles), and renamed COPYING accordingly
Amelia Coutard [Thu, 13 Oct 2022 23:18:08 +0000 (01:18 +0200)]
Added CC0 licence (for Makefiles), and renamed COPYING accordingly

2 years agoRestructured build system, to allow for easier adding of separate programs later
Amelia Coutard [Thu, 13 Oct 2022 23:17:24 +0000 (01:17 +0200)]
Restructured build system, to allow for easier adding of separate programs later

2 years agoMade ftl_to_userspace jump to a loaded module at linear address 0x1000, instead of...
Amelia Coutard [Thu, 13 Oct 2022 14:47:08 +0000 (16:47 +0200)]
Made ftl_to_userspace jump to a loaded module at linear address 0x1000, instead of a function in the higher-half

2 years agoMade the physical pages returned by the allocator null, to avoid any unexpected bugs...
Amelia Coutard [Thu, 13 Oct 2022 14:45:51 +0000 (16:45 +0200)]
Made the physical pages returned by the allocator null, to avoid any unexpected bugs. Might change later

2 years agoChanged the page tables to use bitfields
Amelia Coutard [Thu, 13 Oct 2022 09:26:43 +0000 (11:26 +0200)]
Changed the page tables to use bitfields

2 years agoRemoved docs.txt. Will remake later
Amelia Coutard [Tue, 11 Oct 2022 21:39:27 +0000 (23:39 +0200)]
Removed docs.txt. Will remake later

2 years agoImplemented a very simple way of jumping to userspace
Amelia Coutard [Tue, 11 Oct 2022 11:55:06 +0000 (13:55 +0200)]
Implemented a very simple way of jumping to userspace

2 years agoMoved the GDT to the higher half (added a second lgdt after jump to 64 bits), to...
Amelia Coutard [Tue, 11 Oct 2022 06:38:45 +0000 (08:38 +0200)]
Moved the GDT to the higher half (added a second lgdt after jump to 64 bits), to allow for unmapping the whole lower half

2 years agoFixed TSS setup.
Amelia Coutard [Mon, 10 Oct 2022 20:56:19 +0000 (22:56 +0200)]
Fixed TSS setup.

2 years agoAdded -no-reboot to qemu options
Amelia Coutard [Mon, 10 Oct 2022 14:10:46 +0000 (16:10 +0200)]
Added -no-reboot to qemu options

2 years agoChanged the order of the info in the GDT, to make it possible to use syscall/sysret
Amelia Coutard [Sun, 9 Oct 2022 18:30:21 +0000 (20:30 +0200)]
Changed the order of the info in the GDT, to make it possible to use syscall/sysret

2 years agoChanged the printing code a bit, to allow for a format argument when printing (unused...
Amelia Coutard [Sun, 9 Oct 2022 01:06:30 +0000 (03:06 +0200)]
Changed the printing code a bit, to allow for a format argument when printing (unused for now)

2 years agoChanged the algorithm that makes the free RAM available, to make it cleaner and more...
Amelia Coutard [Sat, 8 Oct 2022 18:27:23 +0000 (20:27 +0200)]
Changed the algorithm that makes the free RAM available, to make it cleaner and more effective

2 years agoMade printing clearer
Amelia Coutard [Sat, 8 Oct 2022 14:10:58 +0000 (16:10 +0200)]
Made printing clearer

2 years agoFixed priority of operations in address rounding
Amelia Coutard [Sat, 8 Oct 2022 14:07:58 +0000 (16:07 +0200)]
Fixed priority of operations in address rounding

2 years agoUpdated stdlib includes.
Amelia Coutard [Fri, 7 Oct 2022 11:53:30 +0000 (13:53 +0200)]
Updated stdlib includes.

2 years agoRemoved doxygen
Amelia Coutard [Fri, 7 Oct 2022 09:10:26 +0000 (11:10 +0200)]
Removed doxygen

2 years agoRemoved println and replaced its usages by corresponding print calls
Amelia Coutard [Sun, 12 Jun 2022 11:15:02 +0000 (13:15 +0200)]
Removed println and replaced its usages by corresponding print calls

2 years agoMade print_mapping show only the lower half of memory
Amelia Coutard [Sun, 12 Jun 2022 11:06:50 +0000 (13:06 +0200)]
Made print_mapping show only the lower half of memory

The whole physical memory map is in the higher half and is absolutely
huge, so it's best to not show it by default.

2 years agoAdded handlers for each one of the exceptions, instead of having generic ones, put...
Amelia Coutard [Sun, 12 Jun 2022 11:00:07 +0000 (13:00 +0200)]
Added handlers for each one of the exceptions, instead of having generic ones, put them in the IDT accordingly

2 years agoAdded a way to print the entire virtual memory map. Also added missing consts in...
Amelia Coutard [Sun, 12 Jun 2022 02:08:31 +0000 (04:08 +0200)]
Added a way to print the entire virtual memory map. Also added missing consts in paging_entry

2 years agoMoved the page allocator to be a global in paging.cpp and paging.hpp
Amelia Coutard [Sat, 11 Jun 2022 23:17:49 +0000 (01:17 +0200)]
Moved the page allocator to be a global in paging.cpp and paging.hpp

2 years agoDifferentiated the interrupts between those that have error codes and those that...
Amelia Coutard [Tue, 7 Jun 2022 01:19:34 +0000 (03:19 +0200)]
Differentiated the interrupts between those that have error codes and those that don't

2 years agoChanged the interrupt code: now only enables the first 32 vectors, and enable_interru...
Amelia Coutard [Sun, 5 Jun 2022 17:30:22 +0000 (19:30 +0200)]
Changed the interrupt code: now only enables the first 32 vectors, and enable_interrupts now takes the ISRs as arguments instead of hardcoding them

2 years agoChanged the Makefile to use mcmodel=kernel libgcc, and not mcmodel=large libgcc
Amelia Coutard [Sat, 4 Jun 2022 18:06:33 +0000 (20:06 +0200)]
Changed the Makefile to use mcmodel=kernel libgcc, and not mcmodel=large libgcc

2 years agoAdded Doxygen comments to all of the phys_ptr class
Amelia Coutard [Sat, 4 Jun 2022 14:23:47 +0000 (16:23 +0200)]
Added Doxygen comments to all of the phys_ptr class

2 years agoAdded the generated doxygen folder to .gitignore
Amelia Coutard [Sat, 4 Jun 2022 14:22:21 +0000 (16:22 +0200)]
Added the generated doxygen folder to .gitignore

2 years agoFixed the Doxyfile to include private members.
Amelia Coutard [Sat, 4 Jun 2022 14:21:17 +0000 (16:21 +0200)]
Fixed the Doxyfile to include private members.

2 years agoUpdated Makefile to gcc 11.2
Amelia Coutard [Sat, 4 Jun 2022 00:23:38 +0000 (02:23 +0200)]
Updated Makefile to gcc 11.2

2 years agoRemoved the equivalent of -Werror from the Doxyfile
Amelia Coutard [Sat, 4 Jun 2022 00:17:51 +0000 (02:17 +0200)]
Removed the equivalent of -Werror from the Doxyfile

2 years agoChanged assert to disable interrupts on assertion failure, before looping hlt
Amelia Coutard [Wed, 1 Jun 2022 01:24:20 +0000 (03:24 +0200)]
Changed assert to disable interrupts on assertion failure, before looping hlt

2 years agoRemoved the fact that the first address for userspace program text is 0x0000000000000...
Amelia Coutard [Fri, 27 May 2022 00:58:55 +0000 (02:58 +0200)]
Removed the fact that the first address for userspace program text is 0x0000000000000000 (moved it to 0x0000000000001000), to avoid UB in userspace programs

2 years agoGeneralized a bit the functions for printing to the serial port
Amelia Coutard [Fri, 27 May 2022 00:57:59 +0000 (02:57 +0200)]
Generalized a bit the functions for printing to the serial port

2 years agoAdded a bit of stuff to docs.txt, and removed information that had nothing to do...
Amelia Coutard [Fri, 27 May 2022 00:28:19 +0000 (02:28 +0200)]
Added a bit of stuff to docs.txt, and removed information that had nothing to do there

2 years agoChanged the name of the doxygen output folder from docs to doxyfile
Amelia Coutard [Fri, 27 May 2022 00:20:44 +0000 (02:20 +0200)]
Changed the name of the doxygen output folder from docs to doxyfile

2 years agoChanged nullptr to be ~0 instead of 0 for phys_ptr<T> and fixed a missing line in...
Amelia Coutard [Thu, 26 May 2022 18:21:29 +0000 (20:21 +0200)]
Changed nullptr to be ~0 instead of 0 for phys_ptr<T> and fixed a missing line in page_allocator

The goal is to allow usage of physical address 0. Removed the changing
of address <0x1000 to 0x1000 in the initial memory detection phase.

2 years agoChanged a return statement so that the count returned by the allocator is always...
Amelia Coutard [Thu, 26 May 2022 17:48:56 +0000 (19:48 +0200)]
Changed a return statement so that the count returned by the allocator is always the requested count, even if no allocation was performed (in which case, addr == nullptr)

2 years agoRemoved indentation of empty line
Amelia Coutard [Thu, 26 May 2022 17:47:22 +0000 (19:47 +0200)]
Removed indentation of empty line

2 years agoRemoved the framebuffer code: I will not be using it until it is reimplemented in...
Amelia Coutard [Thu, 26 May 2022 02:37:26 +0000 (04:37 +0200)]
Removed the framebuffer code: I will not be using it until it is reimplemented in userspace

2 years agoAdded a Doxyfile and updated the Makefile accordingly.
Amelia Coutard [Thu, 26 May 2022 02:32:16 +0000 (04:32 +0200)]
Added a Doxyfile and updated the Makefile accordingly.

2 years agoRemoved useless padding: didn't know that structs were padded to their alignment...
Amelia Coutard [Sat, 14 May 2022 22:43:03 +0000 (00:43 +0200)]
Removed useless padding: didn't know that structs were padded to their alignment automatically

2 years agoAdded specification of user program memory map
Amelia Coutard [Fri, 13 May 2022 01:35:25 +0000 (03:35 +0200)]
Added specification of user program memory map

2 years agoEnabled basic interrupts and setup LAPIC, (though no IOAPIC yet)
Amelia Coutard [Fri, 13 May 2022 01:23:13 +0000 (03:23 +0200)]
Enabled basic interrupts and setup LAPIC, (though no IOAPIC yet)

2 years agoUsed assert instead of if ! { halt() }, for consistency
Amelia Coutard [Fri, 13 May 2022 01:20:57 +0000 (03:20 +0200)]
Used assert instead of if ! { halt() }, for consistency

2 years agoAdded missing include (to use outb and inb)
Amelia Coutard [Thu, 12 May 2022 15:12:47 +0000 (17:12 +0200)]
Added missing include (to use outb and inb)

2 years agoFixed the IO map "in" the TSS
Amelia Coutard [Thu, 12 May 2022 14:58:53 +0000 (16:58 +0200)]
Fixed the IO map "in" the TSS

2 years agoRestructured code a bit, to move all snippets of asm to utils.{c,h}pp
Amelia Coutard [Thu, 12 May 2022 12:23:23 +0000 (14:23 +0200)]
Restructured code a bit, to move all snippets of asm to utils.{c,h}pp

2 years agoAdded missing volatile specifier to inline asm containing cli and hlt.
Amelia Coutard [Thu, 12 May 2022 12:17:50 +0000 (14:17 +0200)]
Added missing volatile specifier to inline asm containing cli and hlt.

2 years agoRemoved a useless include
Amelia Coutard [Thu, 12 May 2022 12:00:36 +0000 (14:00 +0200)]
Removed a useless include

2 years agoRefactored phys_ptr and fixed little errors
Amelia Coutard [Thu, 12 May 2022 11:20:38 +0000 (13:20 +0200)]
Refactored phys_ptr and fixed little errors

2 years agoRemoved constexpr for the *, -> and [] operators, and get_virt_addr, of phys_ptr...
Amelia Coutard [Thu, 12 May 2022 11:05:17 +0000 (13:05 +0200)]
Removed constexpr for the *, -> and [] operators, and get_virt_addr, of phys_ptr: it made no sense for those to be constexpr

2 years agoMoved phys_ptr to a separate file
Amelia Coutard [Thu, 12 May 2022 10:58:44 +0000 (12:58 +0200)]
Moved phys_ptr to a separate file

2 years agoRefactored boot.s a bit
Amelia Coutard [Thu, 12 May 2022 10:33:10 +0000 (12:33 +0200)]
Refactored boot.s a bit

2 years agoAdded operator- to phys_ptr<T>s, which allowed for simplifying a bit of the code
Amelia Coutard [Mon, 9 May 2022 09:29:54 +0000 (11:29 +0200)]
Added operator- to phys_ptr<T>s, which allowed for simplifying a bit of the code