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implement the blockhash opcode (#114)

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Cyrill Leutwiler
2024-11-15 13:11:04 +01:00
committed by GitHub
parent c9dd347755
commit 6a120463c2
6 changed files with 62 additions and 12 deletions
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crates/llvm-context/src/polkavm/evm/context.rs
+14 -3
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@@ -74,13 +74,24 @@ where
/// Translates the `block_hash` instruction.
pub fn block_hash<'ctx, D>(
_context: &mut Context<'ctx, D>,
_index: inkwell::values::IntValue<'ctx>,
context: &mut Context<'ctx, D>,
index: inkwell::values::IntValue<'ctx>,
) -> anyhow::Result<inkwell::values::BasicValueEnum<'ctx>>
where
D: Dependency + Clone,
{
todo!()
let output_pointer = context.build_alloca_at_entry(context.word_type(), "blockhash_out_ptr");
let index_ptr = context.build_alloca_at_entry(context.word_type(), "blockhash_index_ptr");
context.build_store(index_ptr, index)?;
context.build_runtime_call(
revive_runtime_api::polkavm_imports::BLOCK_HASH,
&[
index_ptr.to_int(context).into(),
output_pointer.to_int(context).into(),
],
);
context.build_byte_swap(context.build_load(output_pointer, "block_hash")?)
}
/// Translates the `difficulty` instruction.