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268 commits

Author SHA1 Message Date
Stefan Lankes
ec5c78fbb3 remove compiler warnings 2011-03-04 23:33:58 +01:00
Stefan Lankes
c21b1bf8a2 remove compiler warnings 2011-03-04 22:42:41 +01:00
Stefan Lankes
56ee331596 add nested spinlocks 
- required to avoid deadlocks
 2011-03-04 11:38:40 +01:00
Stefan Lankes
464f31a53b optimize the system call fork 
- add a function to copy a physical page
=> reduce the using of vm_alloc and vm_free
 2011-03-03 09:13:00 +01:00
Stefan Lankes
a27150b923 Fix bug in system call "fork" 
- issues: memory leak
 2011-03-02 23:08:01 +01:00
Stefan Lankes
5ce3ed9338 First steps to support the system calls "fork" and "wait" 
- Currently, the system call "fork" doesn't work and has a memory leak
- However, it is a good starting point for further developments.
 2011-03-02 13:49:36 +01:00
Stefan Lankes
cf078ec359 add a function to read the instruction pointer 2011-03-02 06:28:50 +01:00
Stefan Lankes
6772524b08 change copyright statement 
=> using of a public domain license
 2011-03-02 05:32:25 +01:00
Stefan Lankes
16efb49204 remove obsolete function arguments 2011-02-24 10:15:58 +01:00
Stefan Lankes
31ad08b7ae Remap lapic and ioapic to the kernel space + some cosmetic changes 2011-02-21 08:36:06 +01:00
Stefan Lankes
c355adb300 create a new pgd for each process 2011-02-18 21:20:15 +01:00
Stefan Lankes
156bf8fa1b specify that our assembler code don't need an executable stack 2011-02-16 21:19:44 +01:00
stefan
308e023a85 - use non-recursive Makefiles 
- this patch based on Florian Zeitz's hint


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@400 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-02-09 19:13:40 +00:00
stefan
23ed873c24 - define jump_to_user_code as line function 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@395 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-02-08 19:47:49 +00:00
stefan
9a9df5ed2e - merge current eduOS branch to MetalSVM 
=> add the support of "real" user-space applications, which could be loaded via initrd


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@394 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-02-08 18:37:56 +00:00
stefan
810b13f37e - use the function lapic_read instead of direct memory access to the apic entries 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@370 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-01-07 05:37:42 +00:00
stefan
15487b4817 - remove wrong multiplicator 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@369 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-01-07 05:34:48 +00:00
stefan
b921da960a - use the record scc_info to determine the cpu frequency 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@368 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-01-06 10:49:04 +00:00
stefan
9d2b73c6cb - add a workaround to use paging and the apic at the same time 
(we don't use __attribute__((optimize(0))))


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@366 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-01-05 20:12:07 +00:00
stefan
8646b56a63 - minor changes to support APIC 
(currently, we got page fault by entering apic_calibration)
- first steps to realize a loader



git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@365 315a16e6-25f9-4109-90ae-ca3045a26c18
 2011-01-05 10:16:53 +00:00
stefan
45219bce2e - huge commit 
- enable the paging support
- redesign of the APIC code

TODO:
- Currently, we are not able to start user-level applications.
- The RTL8139 driver does not longer work. Perhaps, a bug in the output function.
- The APIC codes doesn't work on all systems. Therefore, the code is currently disabled.



git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@326 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-12-10 06:16:58 +00:00
stefan
f28fd84c68 - redesign of the apic code 
- add ioapic support
- currently, all irq will forwarded to the boot processor



git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@293 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-29 02:39:10 +00:00
stefan
3e1c151b5f - remove an awful bug in the calculation of the io address 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@292 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-29 02:36:40 +00:00
stefan
645ce10ed4 - cleanup pci code 
- add function to determine the iobase address and the irq number of a specific device


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@291 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-27 17:28:32 +00:00
stefan
7871ef692a - add workaround to run the apic code correctly on qemu 12.5 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@290 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-26 18:15:09 +00:00
stefan
0dd542dc47 - code cleanup 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@289 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-26 18:14:13 +00:00
stefan
aec80ba9e4 - remove typo 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@274 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-26 05:38:01 +00:00
stefan
bc67c946af - add APIC support for the SCC 
- seems to work, only the APIC timer doesn't work!


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@273 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-26 05:33:02 +00:00
stefan
6346f54594 - redesign of the function cpuid to avoid unintentional overriding of registers 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@268 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-24 19:05:04 +00:00
stefan
3ed27e697d - add some comments 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@236 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-05 06:51:19 +00:00
stefan
b78b2349eb - add some error checks 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@234 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-05 06:07:39 +00:00
stefan
c8c3035a4d - complete redesign of the APIC code 
- MetalSVM detects the APIC and initializes the APIC timer
- If an a APIC is available, the PIC timer will be disabled
- SMP is currently not supported



git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@233 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-11-04 20:15:39 +00:00
stefan
e527a3ccb6 - switched to an ELF kernel 
- simplified the linker script


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@199 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-10-25 17:10:16 +00:00
stefan
08cbc0a257 - add the first steps to support the (local and IO) APIC 
- remove some typos in the comments


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@196 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-10-25 16:58:31 +00:00
stefan
01ff479e11 - remove some typos in the comments 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@195 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-10-25 16:56:27 +00:00
stefan
d66ac69333 - use "add esp,4" to remove the last element on the stack 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@186 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-10-20 15:39:36 +00:00
stefan
b0e600da99 - prepare MetalSVM for multicore environments 
- create the variable current_task on each core


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@159 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-12 14:45:03 +00:00
stefan
81df510743 - add comments 
- use readable macros instead of constants
- use the same error number like newlib


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@156 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-10 22:18:55 +00:00
stefan
b058e19f47 - remove typo 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@153 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-08 12:16:39 +00:00
stefan
0f72be1a9e - simplifies the array intialization 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@152 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-08 12:11:11 +00:00
stefan
ef1abb5612 - simplify the array intialization 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@151 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-08 12:07:42 +00:00
stefan
806ad22a8a - remove bug 
- the function timer_set_frequency ignored its parameter


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@150 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-08 08:36:02 +00:00
stefan
af556712bd - remove endless loop 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@146 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-08 07:08:21 +00:00
stefan
2819d27885 - specify output architecture 
- rename entry section


git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@144 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-09-07 21:07:27 +00:00
stefan
3c0a4afd43 - remove some obsolete debug messages 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@126 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-24 19:10:12 +00:00
stefan
6e0bbaf55e - increase the readability by using macros instead of some hard-coded numbers 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@123 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-24 05:43:39 +00:00
stefan
7398111913 - add the definition "__KERNEL__" to avoid redifinition of ssize_t and off_t 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@120 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-22 10:08:38 +00:00
stefan
a6a9617775 - add the libc "newlib" and their support into MetalSVM 
- programs could be load as module by the bootloader Grub



git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@95 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-17 09:59:29 +00:00
stefan
440c9a31f7 - nicer output messages 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@74 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-11 14:16:11 +00:00
stefan
61907132a8 - rename some functions 
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@69 315a16e6-25f9-4109-90ae-ca3045a26c18
 2010-08-11 13:12:55 +00:00