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runtime: implement core_log

This commit is contained in:
Sebastien Bourdeauducq 2020-08-04 23:26:30 +08:00
parent 3092bfc21a
commit 6d654de3d5
1 changed files with 19 additions and 1 deletions
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20
src/runtime/src/kernel/api.rs
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@ -1,7 +1,9 @@
use core::ffi::VaList;
use core::ptr;
use core::str;
use libc::{c_char, c_int, size_t};
use libm;
use log::{info, warn};
use alloc::vec;
@ -16,7 +18,20 @@ extern "C" {
fn vsnprintf_(buffer: *mut c_char, count: size_t, format: *const c_char, va: VaList) -> c_int;
}
pub unsafe extern fn rtio_log(fmt: *const c_char, mut args: ...) {
unsafe extern fn core_log(fmt: *const c_char, mut args: ...) {
let size = vsnprintf_(ptr::null_mut(), 0, fmt, args.as_va_list()) as usize;
let mut buf = vec![0; size + 1];
vsnprintf_(buf.as_mut_ptr() as *mut i8, size + 1, fmt, args.as_va_list());
match str::from_utf8(buf.as_slice()) {
Ok(s) => info!("kernel: {}", s),
Err(e) => {
info!("kernel: {}", (str::from_utf8(&buf.as_slice()[..e.valid_up_to()]).unwrap()));
warn!("kernel: invalid utf-8");
}
}
}
unsafe extern fn rtio_log(fmt: *const c_char, mut args: ...) {
let size = vsnprintf_(ptr::null_mut(), 0, fmt, args.as_va_list()) as usize;
let mut buf = vec![0; size + 1];
vsnprintf_(buf.as_mut_ptr(), size + 1, fmt, args.as_va_list());
@ -68,6 +83,9 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
api!(rtio_input_timestamp = rtio::input_timestamp),
api!(rtio_input_data = rtio::input_data),
api!(rtio_input_timestamped_data = rtio::input_timestamped_data),
// log
api!(core_log = core_log),
api!(rtio_log = rtio_log),
// rtio dma