sawyer/picocalc-os-rs
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sawyer bristol
2026-07-12 20:35:42 -06:00
parent aa4711c5a7
commit b619dfa8de
5 changed files with 203 additions and 11 deletions
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25
userlib_sys/src/lib.rs
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@@ -12,7 +12,7 @@ use strum::{EnumCount, EnumIter};
pub type EntryFn = fn();
pub const SYS_CALL_TABLE_COUNT: usize = 15;
pub const SYS_CALL_TABLE_COUNT: usize = 17;
const _: () = assert!(SYS_CALL_TABLE_COUNT == SyscallTable::COUNT);
#[derive(Clone, Copy, EnumIter, EnumCount)]
@@ -33,6 +33,8 @@ pub enum SyscallTable {
ReconfigureAudioSampleRate = 12,
AudioBufferReady = 13,
SendAudioBuffer = 14,
FillRect = 15,
Blit = 16,
}
#[unsafe(no_mangle)]
@@ -152,6 +154,27 @@ pub extern "C" fn draw_iter(ptr: *const CPixel, len: usize) {
f(ptr, len);
}
/// Fills an axis-aligned rectangle with a single color in one call, instead
/// of marshaling it as a stream of individual `CPixel`s through `draw_iter`.
pub type FillRect = extern "C" fn(x: u16, y: u16, w: u16, h: u16, color: u16);
#[unsafe(no_mangle)]
pub extern "C" fn fill_rect(x: u16, y: u16, w: u16, h: u16, color: u16) {
let f: FillRect =
unsafe { core::mem::transmute(SYS_CALL_TABLE[SyscallTable::FillRect as usize]) };
f(x, y, w, h, color);
}
/// Writes a row-major block of raw RGB565 colors into a rectangle in one
/// call, instead of marshaling it pixel-by-pixel through `draw_iter`.
pub type Blit = extern "C" fn(x: u16, y: u16, w: u16, h: u16, colors: *const u16, len: usize);
#[unsafe(no_mangle)]
pub extern "C" fn blit(x: u16, y: u16, w: u16, h: u16, colors: *const u16, len: usize) {
let f: Blit = unsafe { core::mem::transmute(SYS_CALL_TABLE[SyscallTable::Blit as usize]) };
f(x, y, w, h, colors, len);
}
pub mod keyboard {
use crate::{SYS_CALL_TABLE, SyscallTable};