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Add comments for trap::codegen_print gv and fn defs

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This commit is contained in:
bjorn3 2019-06-16 17:40:16 +02:00
parent 2eae6bc879
commit c0779d5d1d
1 changed files with 4 additions and 2 deletions
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6
src/trap.rs
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@ -7,17 +7,19 @@ fn codegen_print(fx: &mut FunctionCx<'_, '_, impl cranelift_module::Backend>, ms
returns: vec![],
}).unwrap();
let puts = fx.module.declare_func_in_func(puts, &mut fx.bcx.func);
fx.add_entity_comment(puts, "puts");
let symbol_name = fx.tcx.symbol_name(fx.instance);
let msg_bytes = format!("trap at {:?} ({}): {}\0", fx.instance, symbol_name, msg).into_bytes().into_boxed_slice();
let real_msg = format!("trap at {:?} ({}): {}\0", fx.instance, symbol_name, msg);
let mut data_ctx = DataContext::new();
data_ctx.define(msg_bytes);
data_ctx.define(real_msg.as_bytes().to_vec().into_boxed_slice());
let msg_id = fx.module.declare_data(&(symbol_name.as_str().to_string() + msg), Linkage::Local, false, None).unwrap();
// Ignore DuplicateDefinition error, as the data will be the same
let _ = fx.module.define_data(msg_id, &data_ctx);
let local_msg_id = fx.module.declare_data_in_func(msg_id, fx.bcx.func);
fx.add_entity_comment(local_msg_id, msg);
let msg_ptr = fx.bcx.ins().global_value(pointer_ty(fx.tcx), local_msg_id);
fx.bcx.ins().call(puts, &[msg_ptr]);
}