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exquisitus
Joined: 20 Apr 2004
Posts: 6
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 Posted: Tue Apr 20, 2004 6:55 am Post subject: D Newbies |
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I am a newbie to D. Actually, I am hoping to be a newbie. I have not written my first line of D code yet. But I am sure I can because I have adequate C/C++ skills.
But, I have been reading quite a bit about D since reading about it on OsNews.com yesterday (2004/04/19). The more I read, the more I liked D. So, I decided to come here and signed up. I am in the process of writing my own OS. Yes, I am an OS hobbyist. The first question I have is, can D be called from C/Asm? I heard and read that D can use C API by linking against it. That is nice and dandy, but how will I make the jump from Asm/C to D if I wanted to write my OS in Asm & D?
Because of questions like that and possibly more as I try to make D useful. I decided to start this newbie topic.
Thanks all and D does look promising. I love Asm/C/C++, and to see a language that looks like C/C++ but cleans it up like Java, it is great. I really like some of the things I have been reading about D. One thing I didn't like about Java was that it forced you to be OO. D took the best of C, C++, Java, and I heard C#. I don't know anything of C#.
I look forward to participating.
.v
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jcc7
Joined: 22 Feb 2004
Posts: 657
Location: Muskogee, OK, USA
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Wienczny
Joined: 10 Apr 2004
Posts: 35
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| Posted: Tue Apr 20, 2004 5:24 pm Post subject: |
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| To write an OS kernel in D is on my todo list, too. What kind of kernel do you want to write? Microkernel? Something like L4Ka::Pistachio microkernel? |
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exquisitus
Joined: 20 Apr 2004
Posts: 6
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| Posted: Tue Apr 20, 2004 8:06 pm Post subject: uKernewl |
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| Wienczny wrote: | | To write an OS kernel in D is on my todo list, too. What kind of kernel do you want to write? Microkernel? Something like L4Ka::Pistachio microkernel? |
I am shooting for a message based micro-kernel. I don't know anything about writing an OS. I am an embedded programming and my major was EE. but i love programming. I know enought of the intel x86 to do get into protected mode and i have some idea of the theory. ihave written boot loaders and kernels which don't do much more than print some info about the system (not really a kernel as it doesn't do anything useful). but in theory, i can extend it. i was just playing around with ideas and i would like to do a bit more planning before i start to write again. i want to have some direction instead of just playing around.
originally, i wanted to use C++. when using C/C++ for kernel development, it is clear how to call the C code and what you needed to support C++ (new/delete) and some other things to run the global and constructors. i then decided to stick with C and wait until i was further along to mess with C++. I heard that D links to C, but i don't know much yet to call D from C.
i would like to know that kind of things for D. i really think D with its clarity, can be a really nice language for kernel dev.
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l8night
Joined: 03 May 2004
Posts: 32
Location: UK
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| Posted: Mon May 03, 2004 6:01 pm Post subject: |
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I started ....
http://www.geocities.com/one_mad_alien/dkernel.html
it boots, and talks to the keyboard and vga screen.
however that was before walters reorganisation of phobos, and I did have to hack the gc a little (but it does have GC).
its flat memory, never bothered to enable paging, no threading etc
but a start. only compiles under linux dmd NEEDS dmd 0.74 (needs gcc + objdump) I am thinking of trying to compile gdc under mingw (used this originally for the C and C++ versions of the kernel [c++ worked [ish] had hassles getting RTTI and exceptions working so gave up])
if there is an interest in continuing (I only did it to prove something could be started) then I may try to get it compiling under 0.86, running under bochs and make it a project here (then all we need is a few graphics drivers and port the swt) [I have the FDC code in my C++ version working and some IDE code somewhere too fat32fs should not be a major challenge] |
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exquisitus
Joined: 20 Apr 2004
Posts: 6
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| Posted: Tue May 04, 2004 4:27 am Post subject: |
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| l8night wrote: | I started ....
http://www.geocities.com/one_mad_alien/dkernel.html
it boots, and talks to the keyboard and vga screen.
however that was before walters reorganisation of phobos, and I did have to hack the gc a little (but it does have GC).
.... |
This is great. I went to your page and see you have two versions. i will study both and see if i can't make some changes. some of the things i will try to do are:
- work in bochs (that is what i use for playing around)
- grub (then u don't have to worry about making your own 3-stage boot loader)
Thanks for posting what you have done.
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l8night
Joined: 03 May 2004
Posts: 32
Location: UK
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| Posted: Tue May 04, 2004 2:11 pm Post subject: |
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Grub support was one thing I though about ... but I had fasm code for a boot load and Grub support ment I had to read lots of other ppls docs!
also the original plan (many moons ago) was to have a CD booting OS basically to turn your PC into a games console, or for dedicated servers.
best of luck getting it running  post your progress here or email/msg me if you get stuck. |
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jcc7
Joined: 22 Feb 2004
Posts: 657
Location: Muskogee, OK, USA
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| Posted: Sun Jul 18, 2004 12:45 pm Post subject: D Kernel |
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There's a new post on dm.D related to this topic.
From digitalmars.D:6448: | Quote: | Hi Everyone,
Earlier this year I started writing an operating system using D. It uses a microkernel design, and is targeted at x86 PCs. I had lots of great plans for the operating system, but I never got them even close to being realized. At the moment, I've stopped working on it with no plans to continue, so I decided to release what source code I had already made.
It basically has just 4 parts that are finished/working:
1) An interface to be loaded by a multiboot compatible boot loader
2) A text driver
3) A memory manager which uses paging and can keep track of 4GB of memory. (simple reservation system, kmalloc, etc.)
4) A tool for automatically creating a bochs hard drive image after each compile, which allows for very fast testing.
Anyhow, if you're interested, you can download it here:
http://members.shaw.ca/bradenm_k/misc/picos2004a.tar.gz
I don't claim to be a great programmer, and this was my first operating system. Nonetheless, I feel it may be helpful to someone.
P.S. The last compiler I used for this was either DMD 0.92 or 0.93 - perhaps you might get some new compiler errors/warning due to deprecated features. Also, the Makefiles are all set up for Linux. It would be a lot of work to get this to compile on Windows. |
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jcc7
Joined: 22 Feb 2004
Posts: 657
Location: Muskogee, OK, USA
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