sawyer/picocalc-os-rs
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sawyer bristol
2025-09-28 22:24:29 -06:00
parent d986f1409f
commit f353cad108
10 changed files with 204 additions and 40 deletions
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22
abi_sys/src/lib.rs
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@@ -30,6 +30,7 @@ pub enum CallAbiTable {
GenRand = 5,
ListDir = 6,
ReadFile = 7,
FileLen = 8,
}
pub type PrintAbi = extern "C" fn(ptr: *const u8, len: usize);
@@ -95,11 +96,15 @@ pub fn gen_rand(req: &mut RngRequest) {
}
}
pub type ListDir =
extern "C" fn(str: *const u8, len: usize, files: *mut Option<DirEntry>, file_len: usize);
pub type ListDir = extern "C" fn(
str: *const u8,
len: usize,
files: *mut Option<DirEntry>,
file_len: usize,
) -> usize;
#[allow(unused)]
pub fn list_dir(path: &str, files: &mut [Option<DirEntry>]) {
pub fn list_dir(path: &str, files: &mut [Option<DirEntry>]) -> usize {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::ListDir as usize];
let f: ListDir = core::mem::transmute(ptr);
@@ -129,3 +134,14 @@ pub fn read_file(file: &str, read_from: usize, buf: &mut [u8]) -> usize {
)
}
}
pub type FileLen = extern "C" fn(str: *const u8, len: usize) -> usize;
#[allow(unused)]
pub fn file_len(file: &str) -> usize {
unsafe {
let ptr = CALL_ABI_TABLE[CallAbiTable::FileLen as usize];
let f: FileLen = core::mem::transmute(ptr);
f(file.as_ptr(), file.len())
}
}