bjoernager/rust
bjoernager/rust
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Partially implement reallocation (e.g. for growing Vecs).

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This commit is contained in:
Scott Olson 2016-04-06 17:29:56 -06:00
parent 8d3d8af67a
commit f472018fbb
3 changed files with 48 additions and 4 deletions
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11
src/interpreter.rs
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@ -530,6 +530,17 @@ impl<'a, 'tcx: 'a, 'arena> Interpreter<'a, 'tcx, 'arena> {
try!(self.memory.write_ptr(dest, ptr));
}
"__rust_reallocate" => {
let ptr_arg = try!(self.eval_operand(&args[0]));
let _old_size_arg = try!(self.eval_operand(&args[1]));
let size_arg = try!(self.eval_operand(&args[2]));
let _align_arg = try!(self.eval_operand(&args[3]));
let ptr = try!(self.memory.read_ptr(ptr_arg));
let size = try!(self.memory.read_usize(size_arg));
try!(self.memory.reallocate(ptr, size as usize));
try!(self.memory.write_ptr(dest, ptr));
}
_ => panic!("can't call C ABI function: {}", link_name),
}