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more emscripten stubs and urandom hack (#199)

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This commit is contained in:
Mackenzie Clark
2019-02-22 10:42:38 -08:00
committed by GitHub
parent e9d72740c0
commit a6d72bdec9
9 changed files with 599 additions and 17 deletions
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18
lib/emscripten/src/syscalls/mod.rs
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@ -28,7 +28,7 @@ use libc::{
getpid,
// iovec,
lseek,
open,
// open,
read,
// readv,
rmdir,
@ -85,22 +85,6 @@ pub fn ___syscall4(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
unsafe { write(fd, buf_addr, count) as i32 }
}
/// open
pub fn ___syscall5(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall5 (open) {}", which);
let pathname: u32 = varargs.get(ctx);
let flags: i32 = varargs.get(ctx);
let mode: u32 = varargs.get(ctx);
let pathname_addr = emscripten_memory_pointer!(ctx.memory(0), pathname) as *const i8;
let path_str = unsafe { std::ffi::CStr::from_ptr(pathname_addr).to_str().unwrap() };
let fd = unsafe { open(pathname_addr, flags, mode) };
debug!(
"=> pathname: {}, flags: {}, mode: {} = fd: {}\npath: {}",
pathname, flags, mode, fd, path_str
);
fd
}
/// close
pub fn ___syscall6(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall6 (close) {}", which);