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* arch: i386: add support for 8259 PICDanny Holman2021-09-282-1/+55
| | | | | | Add support for the 8259 programmable interrupt controller. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* i386: create idt.c and isr.sDanny Holman2021-08-303-1/+115
| | | | | | Create files that add IDT support for i386. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: add ring-3 descriptors to the GDTDanny Holman2021-08-271-1/+3
| | | | | | Add two ring-3 segment discriptors to the GDT during gdt_install. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: surround GDT macros with parensDanny Holman2021-07-251-15/+14
| | | | | | | Add parenthesis around the GDT setup macros. This is done to prevent having to do it when using them. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: add GDT setup routinesDanny Holman2021-07-242-0/+97
| | | | | | Add a set of routines that setup the x86's global descriptor table. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: move the kernel to high memoryDanny Holman2021-07-202-7/+50
| | | | | Move the start of the kernel image to the "higher half" of memory. This also enables paging.
* i386: create terminal_scroll functionDanny Holman2021-01-281-10/+25
| | | | | | Add support for scrolling the terminal at the end of the VGA buffer. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* i386: add support for newlinesDanny Holman2021-01-251-0/+7
| | | | | | Add support for the newline character in the TTY layer. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* x86: reorganize the i386 directoryDanny Holman2021-01-245-0/+142
Add structure to the internals of the x86 directory. Signed-off-by: Danny Holman <dholman@gymli.xyz>