wasi: better comments

This commit is contained in:
Shritesh Bhattarai 2019-04-13 22:45:31 -05:00
parent a2d8f03092
commit 22960a5fdf

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@ -1,5 +1,8 @@
pub use @import("wasi/core.zig");
// Based on https://github.com/CraneStation/wasi-sysroot/blob/wasi/libc-bottom-half/headers/public/wasi/core.h
// and https://github.com/CraneStation/wasmtime/blob/master/docs/WASI-api.md
pub const STDIN_FILENO = 0;
pub const STDOUT_FILENO = 1;
pub const STDERR_FILENO = 2;
@ -82,7 +85,7 @@ pub const ETXTBSY = 74;
pub const EXDEV = 75;
pub const ENOTCAPABLE = 76;
// TODO: figure out what's going on here
// TODO: implement this like darwin does
pub fn getErrno(r: usize) usize {
const signed_r = @bitCast(isize, r);
return if (signed_r > -4096 and signed_r < 0) @intCast(usize, -signed_r) else 0;