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implement heap allocator tests

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This commit is contained in:
Alexander Neuhäuser
2025-12-20 17:40:45 +01:00
committed by GitHub
parent 82fa03d48e
commit 36bc1f3315
20 changed files with 730 additions and 347 deletions
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142
src/framebuffer.rs
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@@ -16,6 +16,7 @@ const SET_PIXEL_ORDER: u32 = 0x0004_8006;
const GET_PITCH: u32 = 0x000_40008;
const SET_FB_OFFSET: u32 = 0x0004_8009;
#[allow(dead_code)]
pub struct FrameBuffer {
pixel_depth: u32, // Bits per pixel
pitch: u32, // Pixel per row
@@ -31,74 +32,6 @@ pub const ORANGE: u32 = 0x00FFA500;
pub const YELLOW: u32 = 0x00FFFF00;
impl FrameBuffer {
pub fn new() -> Self {
let mut mailbox = Mailbox([0; 36]);
mailbox.0[0] = 35 * 4;
mailbox.0[1] = 0;
mailbox.0[2] = SET_PHYSICAL_DISPLAY_WH;
mailbox.0[3] = 8;
mailbox.0[4] = 8;
mailbox.0[5] = 1920;
mailbox.0[6] = 1080;
mailbox.0[7] = SET_VIRTUAL_DISPLAY_WH;
mailbox.0[8] = 8;
mailbox.0[9] = 8;
mailbox.0[10] = 1920;
mailbox.0[11] = 1080;
mailbox.0[12] = SET_PIXEL_DEPTH;
mailbox.0[13] = 4;
mailbox.0[14] = 4;
mailbox.0[15] = 32; // 32 bit per pixel
mailbox.0[16] = SET_PIXEL_ORDER;
mailbox.0[17] = 4;
mailbox.0[18] = 4;
mailbox.0[19] = 0x0; // RGB
mailbox.0[20] = SET_FB_OFFSET;
mailbox.0[21] = 8;
mailbox.0[22] = 8;
mailbox.0[23] = 0; // X in pixels
mailbox.0[24] = 0; // Y in pixels
mailbox.0[25] = ALLOCATE_BUFFER;
mailbox.0[26] = 8;
mailbox.0[27] = 4;
mailbox.0[28] = 4096; // Alignment
mailbox.0[29] = 0;
mailbox.0[30] = GET_PITCH;
mailbox.0[31] = 4;
mailbox.0[32] = 0;
mailbox.0[33] = 0;
mailbox.0[34] = 0; // End tag
// TODO: validate responses
let addr = core::ptr::addr_of!(mailbox.0[0]) as u32;
write_mailbox(8, addr);
let _ = read_mailbox(8);
if mailbox.0[1] == 0 {
println!("Failed");
}
mailbox.0[28] &= 0x3FFFFFFF;
Self {
pixel_depth: mailbox.0[15],
pitch: mailbox.0[33] / (mailbox.0[15] / 8),
rows: mailbox.0[29] / mailbox.0[33],
start_addr: mailbox.0[28] as *mut u32,
size: mailbox.0[29],
}
}
pub fn draw_pixel(&self, x: u32, y: u32, color: u32) {
let offset = x + y * self.pitch;
unsafe {
@@ -109,6 +42,7 @@ impl FrameBuffer {
/*Bresenham's line algorithm
TODO: check if its possible to optimize y1==y2 case (ARM neon?)
*/
#[allow(clippy::collapsible_else_if)]
pub fn draw_line(&self, x1: u32, y1: u32, x2: u32, y2: u32, color: u32) {
if x1 == x2 {
for y in y1..=y2 {
@@ -218,7 +152,7 @@ impl FrameBuffer {
}
fn draw_ascii(&self, x: u32, y: u32, char: usize, scale: u32, color: u32) {
for (y_offset, row) in (&BASIC_LEGACY[char]).iter().enumerate() {
for (y_offset, row) in BASIC_LEGACY[char].iter().enumerate() {
for bit in 0..8 {
match row & (1 << bit) {
0 => {}
@@ -241,3 +175,73 @@ impl FrameBuffer {
}
}
}
impl Default for FrameBuffer {
fn default() -> Self {
let mut mailbox = Mailbox([0; 36]);
mailbox.0[0] = 35 * 4;
mailbox.0[1] = 0;
mailbox.0[2] = SET_PHYSICAL_DISPLAY_WH;
mailbox.0[3] = 8;
mailbox.0[4] = 8;
mailbox.0[5] = 1920;
mailbox.0[6] = 1080;
mailbox.0[7] = SET_VIRTUAL_DISPLAY_WH;
mailbox.0[8] = 8;
mailbox.0[9] = 8;
mailbox.0[10] = 1920;
mailbox.0[11] = 1080;
mailbox.0[12] = SET_PIXEL_DEPTH;
mailbox.0[13] = 4;
mailbox.0[14] = 4;
mailbox.0[15] = 32; // 32 bit per pixel
mailbox.0[16] = SET_PIXEL_ORDER;
mailbox.0[17] = 4;
mailbox.0[18] = 4;
mailbox.0[19] = 0x0; // RGB
mailbox.0[20] = SET_FB_OFFSET;
mailbox.0[21] = 8;
mailbox.0[22] = 8;
mailbox.0[23] = 0; // X in pixels
mailbox.0[24] = 0; // Y in pixels
mailbox.0[25] = ALLOCATE_BUFFER;
mailbox.0[26] = 8;
mailbox.0[27] = 4;
mailbox.0[28] = 4096; // Alignment
mailbox.0[29] = 0;
mailbox.0[30] = GET_PITCH;
mailbox.0[31] = 4;
mailbox.0[32] = 0;
mailbox.0[33] = 0;
mailbox.0[34] = 0; // End tag
// TODO: validate responses
let addr = core::ptr::addr_of!(mailbox.0[0]) as u32;
write_mailbox(8, addr);
let _ = read_mailbox(8);
if mailbox.0[1] == 0 {
println!("Failed");
}
mailbox.0[28] &= 0x3FFFFFFF;
Self {
pixel_depth: mailbox.0[15],
pitch: mailbox.0[33] / (mailbox.0[15] / 8),
rows: mailbox.0[29] / mailbox.0[33],
start_addr: mailbox.0[28] as *mut u32,
size: mailbox.0[29],
}
}
}