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initial commit -- framebuffer Hello, World!

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FantasyPvP
2024-11-16 15:13:05 +00:00
commit ac4cf9a27b
16 changed files with 863 additions and 0 deletions
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kernel/Cargo.toml
+16
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[package]
name = "kernel"
version.workspace = true
edition.workspace = true
[dependencies]
limine = "0.3.1"
spin = "0.9.8"
bitflags = "2.4.0"
lazy_static = { version = "1.5.0", features = ["spin", "spin_no_std"] }
[[bin]]
name = "kernel"
path = "src/main.rs"
test = false
bench = false
kernel/build.rs
+38
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use std::process::Command;
use std::{env, path::Path};
fn main() {
// Get the output directory from cargo
let out_dir = env::var("OUT_DIR").unwrap();
let build_dir = Path::new(&out_dir).ancestors().nth(3).unwrap();
let iso_root = build_dir.join("iso_root");
// Create ISO directory structure
std::fs::create_dir_all(iso_root.join("boot/limine")).unwrap();
std::fs::create_dir_all(iso_root.join("EFI/BOOT")).unwrap();
// Clone and build Limine if needed
let limine_dir = build_dir.join("limine");
if !limine_dir.exists() {
Command::new("git")
.args([
"clone",
"https://github.com/limine-bootloader/limine.git",
"--branch=v8.x-binary",
"--depth=1",
])
.arg(&limine_dir)
.status()
.expect("Failed to clone Limine");
Command::new("make")
.current_dir(&limine_dir)
.status()
.expect("Failed to build Limine");
}
// Tell cargo to rerun if these files change
println!("cargo:rerun-if-changed=src");
println!("cargo:rerun-if-changed=linker.ld");
println!("cargo:rerun-if-changed=../config/limine.conf");
}
kernel/linker.ld
+70
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/* Tell the linker that we want an x86_64 ELF64 output file */
OUTPUT_FORMAT(elf64-x86-64)
/* We want the symbol kmain to be our entry point */
ENTRY(kmain)
/* Define the program headers we want so the bootloader gives us the right */
/* MMU permissions; this also allows us to exert more control over the linking */
/* process. */
PHDRS
{
limine_requests PT_LOAD;
text PT_LOAD;
rodata PT_LOAD;
data PT_LOAD;
}
SECTIONS
{
/* We want to be placed in the topmost 2GiB of the address space, for optimisations */
/* and because that is what the Limine spec mandates. */
/* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
/* that is the beginning of the region. */
. = 0xffffffff80000000;
/* Define a section to contain the Limine requests and assign it to its own PHDR */
.limine_requests : {
KEEP(*(.limine_requests_start))
KEEP(*(.limine_requests))
KEEP(*(.limine_requests_end))
} :limine_requests
/* Move to the next memory page for .text */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.text : {
*(.text .text.*)
} :text
/* Move to the next memory page for .rodata */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.rodata : {
*(.rodata .rodata.*)
} :rodata
/* Move to the next memory page for .data */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.data : {
*(.data .data.*)
} :data
/* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */
/* unnecessary zeros will be written to the binary. */
/* If you need, for example, .init_array and .fini_array, those should be placed */
/* above this. */
.bss : {
*(.bss .bss.*)
*(COMMON)
} :data
/* Discard .note.* and .eh_frame* since they may cause issues on some hosts. */
/DISCARD/ : {
*(.eh_frame*)
*(.note .note.*)
}
}
kernel/src/font.rs
+200
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pub static FONT: [u8; 128 * 16] = [
// ASCII 0-31 (Control Characters) - Using simple box patterns
// NUL (0)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// SOH (1)
0x18, 0x3C, 0x3C, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// STX (2)
0x18, 0x3C, 0x7E, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// ETX (3)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// EOT (4)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// ENQ (5)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// ACK (6)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// BEL (7)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18,
// BS (8)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18,
// HT (9)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18,
// LF (10)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18,
// VT (11)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18,
// FF (12)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C,
// CR (13)
0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E,
// SO (14)
0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// SI (15)
0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// DLE (16)
0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// DC1 (17)
0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// DC2 (18)
0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// DC3 (19)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// DC4 (20)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// NAK (21)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// SYN (22)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
// ETB (23)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF, 0xFF,
// CAN (24)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF, 0xFF,
// EM (25)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF, 0xFF,
// SUB (26)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0xFF,
// ESC (27)
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18,
// FS (28)
0x18, 0x3C, 0x7E, 0xFF, 0x18, 0x18, 0x18, 0x18, 0x18, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18,
// GS (29)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x18, 0x18, 0x18, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18,
// RS (30)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0x18, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// US (31)
0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
// Space (32)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ! (33)
0x00, 0x00, 0x18, 0x3C, 0x3C, 0x3C, 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00,
// " (34)
0x00, 0x66, 0x66, 0x66, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// # (35)
0x00, 0x00, 0x00, 0x6C, 0x6C, 0xFE, 0x6C, 0x6C, 0x6C, 0xFE, 0x6C, 0x6C, 0x00, 0x00, 0x00, 0x00,
// $ (36)
0x18, 0x18, 0x7C, 0xC6, 0xC2, 0xC0, 0x7C, 0x06, 0x86, 0xC6, 0x7C, 0x18, 0x18, 0x00, 0x00, 0x00,
// % (37)
0x00, 0x00, 0x00, 0x00, 0xC2, 0xC6, 0x0C, 0x18, 0x30, 0x60, 0xC6, 0x86, 0x00, 0x00, 0x00, 0x00,
// & (38)
0x00, 0x00, 0x38, 0x6C, 0x6C, 0x38, 0x76, 0xDC, 0xCC, 0xCC, 0x76, 0x00, 0x00, 0x00, 0x00, 0x00,
// ' (39)
0x00, 0x30, 0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// ( (40)
0x00, 0x00, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x30, 0x30, 0x18, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00,
// ) (41)
0x00, 0x00, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x18, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00,
// * (42)
0x00, 0x00, 0x00, 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// + (43)
0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// , (44)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30, 0x00, 0x00, 0x00, 0x00,
// - (45)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// . (46)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00,
// / (47)
0x00, 0x00, 0x00, 0x00, 0x02, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80, 0x00, 0x00, 0x00, 0x00,
// 0-9 (48-57)
0x00, 0x00, 0x38, 0x6C, 0xC6, 0xC6, 0xD6, 0xD6, 0xC6, 0xC6, 0x6C, 0x38, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x18, 0x38, 0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7E, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0xC6, 0xFE, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0x06, 0x06, 0x3C, 0x06, 0x06, 0x06, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x0C, 0x1C, 0x3C, 0x6C, 0xCC, 0xFE, 0x0C, 0x0C, 0x0C, 0x1E, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFE, 0xC0, 0xC0, 0xC0, 0xFC, 0x06, 0x06, 0x06, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x38, 0x60, 0xC0, 0xC0, 0xFC, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFE, 0xC6, 0x06, 0x06, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0x7E, 0x06, 0x06, 0x06, 0x0C, 0x78, 0x00, 0x00, 0x00, 0x00,
// : (58)
0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00,
// ; (59)
0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30, 0x00, 0x00, 0x00, 0x00,
// < (60)
0x00, 0x00, 0x00, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x00, 0x00, 0x00, 0x00,
// = (61)
0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// > (62)
0x00, 0x00, 0x00, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00,
// ? (63)
0x00, 0x00, 0x7C, 0xC6, 0xC6, 0x0C, 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00,
// @ (64)
0x00, 0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xDE, 0xDE, 0xDE, 0xDC, 0xC0, 0x7C, 0x00, 0x00, 0x00, 0x00,
// A-Z (65-90)
0x00, 0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFC, 0x66, 0x66, 0x66, 0x7C, 0x66, 0x66, 0x66, 0x66, 0xFC, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3C, 0x66, 0xC2, 0xC0, 0xC0, 0xC0, 0xC0, 0xC2, 0x66, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xF8, 0x6C, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x6C, 0xF8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFE, 0x66, 0x62, 0x68, 0x78, 0x68, 0x60, 0x62, 0x66, 0xFE, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFE, 0x66, 0x62, 0x68, 0x78, 0x68, 0x60, 0x60, 0x60, 0xF0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3C, 0x66, 0xC2, 0xC0, 0xC0, 0xDE, 0xC6, 0xC6, 0x66, 0x3A, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0xFE, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0xCC, 0xCC, 0xCC, 0x78, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xE6, 0x66, 0x6C, 0x6C, 0x78, 0x78, 0x6C, 0x66, 0x66, 0xE6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xF0, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x62, 0x66, 0xFE, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xEE, 0xFE, 0xFE, 0xD6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xE6, 0xF6, 0xFE, 0xDE, 0xCE, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFC, 0x66, 0x66, 0x66, 0x7C, 0x60, 0x60, 0x60, 0x60, 0xF0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xDE, 0x7C, 0x0C, 0x0E, 0x00, 0x00,
0x00, 0x00, 0xFC, 0x66, 0x66, 0x66, 0x7C, 0x6C, 0x66, 0x66, 0x66, 0xE6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7C, 0xC6, 0xC6, 0x60, 0x38, 0x0C, 0x06, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7E, 0x7E, 0x5A, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xD6, 0xD6, 0xFE, 0xEE, 0x6C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xC6, 0xC6, 0x6C, 0x7C, 0x38, 0x38, 0x7C, 0x6C, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFE, 0xC6, 0x86, 0x0C, 0x18, 0x30, 0x60, 0xC2, 0xC6, 0xFE, 0x00, 0x00, 0x00, 0x00,
// [ (91)
0x00, 0x00, 0x3C, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x3C, 0x00, 0x00, 0x00, 0x00,
// \ (92)
0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0x70, 0x38, 0x1C, 0x0E, 0x06, 0x02, 0x00, 0x00, 0x00, 0x00,
// ] (93)
0x00, 0x00, 0x3C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x3C, 0x00, 0x00, 0x00, 0x00,
// ^ (94)
0x10, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// _ (95)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
// ` (96)
0x30, 0x18, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// a-z (97-122) - lowercase letters
0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0xCC, 0xCC, 0x76, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xE0, 0x60, 0x60, 0x78, 0x6C, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xC6, 0xC0, 0xC0, 0xC0, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x1C, 0x0C, 0x0C, 0x3C, 0x6C, 0xCC, 0xCC, 0xCC, 0xCC, 0x76, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xC6, 0xFE, 0xC0, 0xC0, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x38, 0x6C, 0x64, 0x60, 0xF0, 0x60, 0x60, 0x60, 0x60, 0xF0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xCC, 0xCC, 0xCC, 0x7C, 0x0C, 0xCC, 0x78, 0x00, 0x00, 0x00,
0x00, 0x00, 0xE0, 0x60, 0x60, 0x6C, 0x76, 0x66, 0x66, 0x66, 0x66, 0xE6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x18, 0x18, 0x00, 0x38, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x06, 0x06, 0x00, 0x0E, 0x06, 0x06, 0x06, 0x06, 0x66, 0x66, 0x3C, 0x00, 0x00, 0x00,
0x00, 0x00, 0xE0, 0x60, 0x60, 0x66, 0x6C, 0x78, 0x78, 0x6C, 0x66, 0xE6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x38, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xEC, 0xFE, 0xD6, 0xD6, 0xD6, 0xD6, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xDC, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xDC, 0x66, 0x66, 0x66, 0x7C, 0x60, 0x60, 0xF0, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xCC, 0xCC, 0xCC, 0x7C, 0x0C, 0x0C, 0x1E, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xDC, 0x76, 0x66, 0x60, 0x60, 0x60, 0xF0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xC6, 0x60, 0x38, 0x0C, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x10, 0x30, 0x30, 0xFC, 0x30, 0x30, 0x30, 0x30, 0x36, 0x1C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x76, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xD6, 0xD6, 0xFE, 0x6C, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xC6, 0x6C, 0x38, 0x38, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0x7E, 0x06, 0xC6, 0x7C, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xCC, 0x18, 0x30, 0x60, 0xC6, 0xFE, 0x00, 0x00, 0x00, 0x00,
// { (123)
0x00, 0x00, 0x0E, 0x18, 0x18, 0x18, 0x70, 0x18, 0x18, 0x18, 0x18, 0x0E, 0x00, 0x00, 0x00, 0x00,
// | (124)
0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00,
// } (125)
0x00, 0x00, 0x70, 0x18, 0x18, 0x18, 0x0E, 0x18, 0x18, 0x18, 0x18, 0x70, 0x00, 0x00, 0x00, 0x00,
// ~ (126)
0x00, 0x00, 0x76, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// DEL (127)
0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00,
];
kernel/src/main.rs
+40
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@@ -0,0 +1,40 @@
#![no_std] // Don't link the Rust standard library
#![no_main] // Disable all Rust-level entry points
use core::panic::PanicInfo;
use limine::*;
use limine::request::{
FramebufferRequest, RequestsEndMarker, RequestsStartMarker,
};
mod font;
mod render;
use crate::font::FONT;
// Set the base revision
static BASE_REVISION: BaseRevision = BaseRevision::new();
// Halt and catch fire function
fn hcf() -> ! {
loop {
unsafe { core::arch::asm!("cli; hlt") }
}
}
// Called on panic
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
hcf()
}
// Kernel entry point
#[no_mangle]
pub extern "C" fn kmain() -> ! {
render::init();
render::write_string("Welcome to GoofyAhhOS!\nthis is the superior os\nif you disagree you are a heretic in the name of steven.", 0xff0000, 0);
hcf()
}
kernel/src/render.rs
+118
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@@ -0,0 +1,118 @@
use core::sync::atomic::{AtomicUsize, Ordering};
use lazy_static::lazy_static;
use limine::framebuffer::Framebuffer;
use spin::Mutex;
use limine::request::FramebufferRequest;
use crate::font::FONT;
pub struct FramebufferWriter<'a> {
framebuffer: Framebuffer<'a>,
x_pos: AtomicUsize,
y_pos: AtomicUsize,
}
unsafe impl<'a> Send for FramebufferWriter<'a> {}
unsafe impl<'a> Sync for FramebufferWriter<'a> {}
impl<'a> FramebufferWriter<'a> {
pub fn new(framebuffer: Framebuffer<'a>) -> Self {
Self {
framebuffer,
x_pos: AtomicUsize::new(0),
y_pos: AtomicUsize::new(0),
}
}
pub fn write_pixel(&self, x: usize, y: usize, color: u32) {
let pitch = self.framebuffer.pitch() as usize;
let bpp = (self.framebuffer.bpp() / 8) as usize;
let pixel_offset = y * pitch + x * bpp;
unsafe {
*(self.framebuffer.addr().add(pixel_offset) as *mut u32) = color;
}
}
pub fn write_char(&self, x: u32, y: u32, fg_color: u32, bg_color: u32, mut c: u8) {
if c < 32 || c > 126 {
c = '?' as u8;
}
let data: &[u8] = &FONT[c as usize * 16..(c as usize + 1) * 16];
for row in 0..16 {
let line: u8 = data[row];
for col in 0..8 {
let pixel_x: u32 = x + col;
let pixel_y: u32 = y + row as u32;
if line & (0x80 >> col) != 0 {
self.write_pixel(pixel_x as usize, pixel_y as usize, fg_color);
} else {
self.write_pixel(pixel_x as usize, pixel_y as usize, bg_color);
}
}
}
}
pub fn write_string(&self, x: u32, y: u32, fg_color: u32, bg_color: u32, s: &str) {
let mut curr_x: u32 = x;
let mut curr_y: u32 = y;
for c in s.chars() {
if c == '\n' {
curr_x = x;
curr_y += 16;
continue;
}
if curr_x + 8 > self.framebuffer.width() as u32 {
curr_x = x;
curr_y += 16;
}
if curr_y + 16 > self.framebuffer.height() as u32 {
break;
}
self.write_char(curr_x, curr_y, fg_color, bg_color, c as u8);
curr_x += 8;
}
}
pub fn clear(&self, color: u32) {
let width = self.framebuffer.width() as usize;
let height = self.framebuffer.height() as usize;
for y in 0..height {
for x in 0..width {
self.write_pixel(x, y, color);
}
}
}
}
static FRAMEBUFFER_REQUEST: FramebufferRequest = FramebufferRequest::new();
lazy_static! {
pub static ref FRAMEBUFFER_WRITER: Mutex<Option<FramebufferWriter<'static>>> = Mutex::new(None);
}
pub fn init() {
if let Some(framebuffer_response) = FRAMEBUFFER_REQUEST.get_response() {
// The framebuffer from the response has a 'static lifetime
let framebuffer = framebuffer_response.framebuffers().next().unwrap();
*FRAMEBUFFER_WRITER.lock() = Some(FramebufferWriter::new(framebuffer));
clear_screen(0x00000000);
}
}
pub fn clear_screen(color: u32) {
if let Some(writer) = FRAMEBUFFER_WRITER.lock().as_ref() {
writer.clear(color);
}
}
pub fn write_string(s: &str, fg_color: u32, bg_color: u32) {
FRAMEBUFFER_WRITER.lock().as_ref().unwrap().write_string(0, 0, fg_color, bg_color, s);
}
kernel/src/sys/mod.rs
+2
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@@ -0,0 +1,2 @@
pub mod std;
mod kernel;
kernel/x86_64-kernel.json
+29
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@@ -0,0 +1,29 @@
{
"llvm-target": "x86_64-unknown-none",
"data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
"arch": "x86_64",
"target-endian": "little",
"target-pointer-width": "64",
"target-c-int-width": "32",
"os": "none",
"executables": true,
"linker-flavor": "ld.lld",
"linker": "rust-lld",
"panic-strategy": "abort",
"disable-redzone": true,
"features": "-mmx,-sse,+soft-float",
"relocation-model": "static",
"code-model": "kernel",
"pre-link-args": {
"ld.lld": [
"--script=/home/fantasypvp/Projects/OSDev/GoofyAhhOS/kernel/linker.ld",
"-nostdlib",
"--no-dynamic-linker",
"-static",
"--no-pie",
"--gc-sections",
"--build-id=none",
"-z", "max-page-size=0x1000"
]
}
}