garmos, branch master simple operating system https://git.ireas.org/garmos/atom?h=master 2017-03-06T21:25:03Z move architecture-specific compiler flags 2017-03-06T21:25:03Z Robin Krahl robin.krahl@ireas.org 2017-03-06T21:25:03Z urn:sha1:6a2ae067fc577754bda60f5b4c2878bf9b0ae26c Architecture-specific compiler flags are now located in arch/*/config.mk instead of the main config.mk. idt: add interruption handling 2017-03-06T01:52:05Z Robin Krahl robin.krahl@ireas.org 2017-03-06T01:52:05Z urn:sha1:05b9ca73793047e795e46a2ae13db02c34b8a7c3 The Interruption Descriptor Table (IDT) is implemented in idt.{c,h} as part of the core, but the setup and activation of the IDT and the registration of specific interruption request handlers is part of arch.{c,h}. The request handlers are implemented in idt.s and delegate to kernel_handle_interrupt. gdt: expose code segment offset in GDT 2017-03-06T01:15:28Z Robin Krahl robin.krahl@ireas.org 2017-03-06T01:15:28Z urn:sha1:28301499381cb541eec4eb99f61e3d1a193c5a2d gdt_get_code_offset() returns the offset of the code segment in the GDT relative to the address of the GDT itself. This offset is for example required when setting the interrupt desriptor table. gdt: move assembler code to arch 2017-03-06T01:14:29Z Robin Krahl robin.krahl@ireas.org 2017-03-06T01:14:29Z urn:sha1:9113c143c377876cc750e007e99f76c844bc95e8 The assembler code to set the global descriptor table is architecture-specific and therefore moved to arch.{c,h}. kernel: add debug function ker_dbg 2017-03-06T00:56:22Z Robin Krahl robin.krahl@ireas.org 2017-03-06T00:54:55Z urn:sha1:0041476a0f804db9266c54b8ce62a585e7b30890 ker_dbg writes a string to the terminal. In future, it might also write to a text file, to the serial console or other channels. gdt: remove static annotation from gdt and gdtp 2017-03-05T23:50:55Z Robin Krahl robin.krahl@ireas.org 2017-03-05T23:50:55Z urn:sha1:c3c4a57262ae9a2530598ae79b7c703d68da6abf The static annotation for gdt and gdtp causes problems when registering the global and interrupt description table. It is now omitted. arch: add port set, port get and additional register set functions 2017-03-05T22:17:59Z Robin Krahl robin.krahl@ireas.org 2017-03-05T22:16:05Z urn:sha1:1f0ea8244fb80966280bd8ecee6a797130592d27 Add regset16 and regset32 to the existing regset8 in arch.h, and prtset{8,16,32} and prtget{8,16,32} to access ports. gdt: add simple gdt implementation 2017-03-05T21:51:36Z Robin Krahl robin.krahl@ireas.org 2017-03-05T21:37:54Z urn:sha1:f01e48444829cce9eec25f4562778da0ed4ae66c Add a simple Global Descriptor Table implementation based on [0]. [0] http://www.lowlevel.eu/wiki/Global_Descriptor_Table initial commit 2017-03-05T20:43:19Z Robin Krahl robin.krahl@ireas.org 2017-03-05T20:43:19Z urn:sha1:d42b629d983de336ddd3c22782caa2791ab78897