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* arch: i386: move raw assembly calls to their own headerDanny Holman2024-02-161-0/+19
| | | | | | | Move simple assembly calls to their own header. All one or two line assembly calls should be defined in a single place. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: syscall.c: add functions that dump dataDanny Holman2024-02-161-0/+2
| | | | | | | Add functions to the syscall handlers that dump registers and stack in case of catastrophic failure. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: add operations to control PIT timerDanny Holman2024-02-161-0/+9
| | | | | | | | Add a set of functions that control the programmable interrupt timer. This will be used as the primary means of preemption on this architecture. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: put framebuffer ops in own fileDanny Holman2024-02-161-0/+17
| | | | | | | Move all operations related to the x86 framebuffer into its own set of files. This makes the TTY layer more architecture agnostic. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: paging: add a proper paging APIDanny Holman2023-11-261-0/+52
| | | | | | | Add a proper page control API. These functions allow the kernel to directly map and unmap pages in the logical address space. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: alloc: add a physical memory managerDanny Holman2023-11-261-0/+13
| | | | | | Add a simple, bitmap-based physical memory management system. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: add multiboot supportDanny Holman2023-11-261-0/+104
| | | | | | | | Add support for the multiboot specification. These files will allow the kernel to read the multiboot header information as well as the provided memory map. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: syscall.h: define some example system callsDanny Holman2023-11-261-5/+22
| | | | | | | Define a few standard Unix system calls. These may change based on future needs. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: pic.h: make register_irq_handler accessibleDanny Holman2023-11-261-0/+2
| | | | | | Make the register_irq_function accessible from files including pic.h. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: pic.h: change all chars into uint8_tDanny Holman2023-11-261-1/+2
| | | | | | | Make all variables with char or char* type into uint8_t. This makes the system more consistent and issues fewer compiler warnings. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: idt.h: remove extern functionsDanny Holman2023-11-261-4/+1
| | | | | | | Remove references to extern functions. All the necessary functionality for this file is already contained. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: refactor the system call APIDanny Holman2022-03-222-2/+1
| | | | | | | The x86 system call/interrupt handlers should be refactored to be more readable. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: move non-critial files out of bootDanny Holman2022-01-212-0/+46
| | | | | | | Move all files not needed for the bootstrap process out of boot and into the main x86 source directory. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: fix coding style issueDanny Holman2022-01-151-2/+2
| | | | | | Make the inline assembly calls consistent across different i386 files. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: add support for IRQs and system callsDanny Holman2022-01-151-0/+19
| | | | | | Add support for rudementary system calls and IRQ interrupts. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: simplify IDT setupDanny Holman2022-01-152-3/+3
| | | | | | Simplify the interrupt descriptor table setup and frame assembly. Signed-off-by: Danny Holman <dholman@gymli.org>
* arch: i386: include more information in IDTDanny Holman2021-10-092-11/+35
| | | | | | Include information about the current stack frame in the IDT handler(s). Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: add PIC register supportDanny Holman2021-09-281-0/+5
| | | | | | | Add functions that let the OS read the internal state registers of the 8259 PIC. Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: fix IDT exception handlerDanny Holman2021-09-282-0/+72
| | | | | | | Fix the i386's general exception handler to actually work. Fix provided by Jon Sanderson (jjs295356@gmail.com). Signed-off-by: Danny Holman <dholman@gymli.xyz>
* arch: i386: add support for 8259 PICDanny Holman2021-09-281-0/+45
Add support for the 8259 programmable interrupt controller. Signed-off-by: Danny Holman <dholman@gymli.xyz>
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