sawyer/picocalc-os-rs
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use C abi for syscalls

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sawyer bristol
2025-09-26 23:39:19 -06:00
parent bf3b37783f
commit 7bd6012748
5 changed files with 61 additions and 52 deletions
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54
abi_sys/src/lib.rs
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@@ -29,63 +29,49 @@ pub enum CallAbiTable {
GenRand = 5,
}
pub type PrintAbi = extern "Rust" fn(msg: &str);
pub type PrintAbi = extern "C" fn(ptr: *const u8, len: usize);
#[allow(unused)]
pub fn print(msg: &str) {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::Print as usize];
let f: PrintAbi = core::mem::transmute(ptr);
f(msg);
}
let f: PrintAbi = unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::Print as usize]) };
f(msg.as_ptr(), msg.len());
}
pub type SleepAbi = extern "Rust" fn(ms: u64);
pub type SleepAbi = extern "C" fn(ms: u64);
#[allow(unused)]
pub fn sleep(ms: u64) {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::Sleep as usize];
let f: SleepAbi = core::mem::transmute(ptr);
f(ms);
}
let f: SleepAbi = unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::Sleep as usize]) };
f(ms);
}
pub type LockDisplay = extern "Rust" fn(lock: bool);
pub type LockDisplay = extern "C" fn(lock: bool);
#[allow(unused)]
pub fn lock_display(lock: bool) {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::LockDisplay as usize];
let f: LockDisplay = core::mem::transmute(ptr);
f(lock);
}
let f: LockDisplay =
unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::LockDisplay as usize]) };
f(lock);
}
pub type DrawIterAbi = extern "Rust" fn(pixels: &[Pixel<Rgb565>]);
pub type DrawIterAbi = extern "C" fn(ptr: *const Pixel<Rgb565>, len: usize);
#[allow(unused)]
pub fn draw_iter(pixels: &[Pixel<Rgb565>]) {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::DrawIter as usize];
let f: DrawIterAbi = core::mem::transmute(ptr);
f(pixels);
}
let f: DrawIterAbi =
unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::DrawIter as usize]) };
f(pixels.as_ptr(), pixels.len());
}
pub type GetKeyAbi = extern "Rust" fn() -> Option<KeyEvent>;
pub type GetKeyAbi = extern "C" fn() -> KeyEvent;
#[allow(unused)]
pub fn get_key() -> Option<KeyEvent> {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::GetKey as usize];
let f: GetKeyAbi = core::mem::transmute(ptr);
f()
}
pub fn get_key() -> KeyEvent {
let f: GetKeyAbi =
unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::GetKey as usize]) };
f()
}
pub type GenRand = extern "Rust" fn(req: &mut RngRequest);
#[repr(C)]
pub enum RngRequest {
U32(u32),
@@ -93,6 +79,8 @@ pub enum RngRequest {
Bytes { ptr: *mut u8, len: usize },
}
pub type GenRand = extern "C" fn(req: &mut RngRequest);
#[allow(unused)]
pub fn gen_rand(req: &mut RngRequest) {
unsafe {