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Untitled_Kernel/include/vga.h

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Changed I/O to be more generic. instead of stuffing all of the i/o stuff into the "kio" library, i've decided to rework i/o to be a generic handler that takes in a function pointer for putc, and does the rest of the logic onto that pointer. That way, you can pass any function that can take in characters and move them to buffers. I'll do a writeup on this at some point to document it.
2025-06-29 05:13:43 +00:00
/* vga.h
* VGA
Half-baked commit, but i added a struct type for the tss and allocated some memory for it in bss. Also put some space in for the gdt in rodata. Need to leave now, so this broken build goes to the repo!
2025-06-10 13:17:21 +00:00
*
Changed I/O to be more generic. instead of stuffing all of the i/o stuff into the "kio" library, i've decided to rework i/o to be a generic handler that takes in a function pointer for putc, and does the rest of the logic onto that pointer. That way, you can pass any function that can take in characters and move them to buffers. I'll do a writeup on this at some point to document it.
2025-06-29 05:13:43 +00:00
* Responsible for VGA buffer control.
Half-baked commit, but i added a struct type for the tss and allocated some memory for it in bss. Also put some space in for the gdt in rodata. Need to leave now, so this broken build goes to the repo!
2025-06-10 13:17:21 +00:00
*/
Changed I/O to be more generic. instead of stuffing all of the i/o stuff into the "kio" library, i've decided to rework i/o to be a generic handler that takes in a function pointer for putc, and does the rest of the logic onto that pointer. That way, you can pass any function that can take in characters and move them to buffers. I'll do a writeup on this at some point to document it.
2025-06-29 05:13:43 +00:00
#ifndef VGA_H
#define VGA_H
Added some functions, did some reorganizing. kttools.h/c is a lib for converting types (only currently contains i_to_str). Also added a printf for i/o.
2025-06-08 20:18:06 +00:00
#define VGA_GRID_COLS 80
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
#define VGA_GRID_ROWS 25
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
#define DEFAULT_ATTRIBUTES 0x0F00
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
#include <stdint.h>
Added some functions, did some reorganizing. kttools.h/c is a lib for converting types (only currently contains i_to_str). Also added a printf for i/o.
2025-06-08 20:18:06 +00:00
#include <stdarg.h>
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
#include "io.h"
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
/*
* CONSTANTS AND VARIABLES
*/
//Information on the VGA buffer
extern volatile uint16_t* const vga_buffer;
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
typedef struct vga_ctx_s {
int cursor_col;
int cursor_row;
uint16_t attributes;
} vga_ctx_t;
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
//grid is top left origin. This is our cursor!
extern uint16_t vga_attributes; // Black background, White foreground
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
extern char_writer_t* default_vga;
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
/*
* Functions
*/
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
//Clear the VGA buffer, context optional
void vga_clear_ctx(vga_ctx_t* ctx);
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
void vga_clear();
Changed I/O to be more generic. instead of stuffing all of the i/o stuff into the "kio" library, i've decided to rework i/o to be a generic handler that takes in a function pointer for putc, and does the rest of the logic onto that pointer. That way, you can pass any function that can take in characters and move them to buffers. I'll do a writeup on this at some point to document it.
2025-06-29 05:13:43 +00:00
//Write character c to cursor
//Implements IO generic ASCII output
Reworked I/O methodology Instead of passing function pointers, we're passing structs with context now. The idea is the same, I/O functions require some struct with a function pointer and some generic memory that only the output device cares about. I/O just calls it. VGA has been reworked to accomodate this change, as well as default outputs being created for low-overhead use (such as interrupt handlers).
2025-07-03 05:36:47 +00:00
int vga_out(void* ctx, char c);
Changed I/O to be more generic. instead of stuffing all of the i/o stuff into the "kio" library, i've decided to rework i/o to be a generic handler that takes in a function pointer for putc, and does the rest of the logic onto that pointer. That way, you can pass any function that can take in characters and move them to buffers. I'll do a writeup on this at some point to document it.
2025-06-29 05:13:43 +00:00
Moved i/o content to kerno.c Added function for integer -> string (library pending) Modified makefile to reflect use of include/ dir
2025-05-29 03:19:50 +00:00
#endif
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