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Get env printf basic example working

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This commit is contained in:
Syrus Akbary
2018-10-29 12:29:44 +01:00
parent c97312345e
commit 33b8757e90
3 changed files with 73 additions and 20 deletions
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27
src/webassembly/memory.rs
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@ -116,6 +116,18 @@ impl LinearMemory {
Some(prev_pages as i32)
}
pub fn carve_slice(&self, offset: u32, size: u32) -> Option<&[u8]> {
let start = offset as usize;
let end = start + size as usize;
let slice: &[u8] = &*self;
// if end <= self.mapped_size() {
Some(&slice[start..end])
// } else {
// None
// }
}
}
impl fmt::Debug for LinearMemory {
@ -151,3 +163,18 @@ impl DerefMut for LinearMemory {
&mut *self.mmap
}
}
// impl Clone for LinearMemory {
// fn clone(&self) -> LinearMemory {
// let mut mmap = MmapMut::map_anon(self.maximum.unwrap_or(self.current) as usize).unwrap();
// let mut base_mmap = &self.mmap;
// let to_init = &mut mmap[0..self.current as usize];
// to_init.copy_from_slice(&self.mmap);
// return LinearMemory {
// mmap: mmap,
// current: self.current,
// maximum: self.maximum,
// };
// }
// }