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events fn

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Signed-off-by: xermicus <cyrill@parity.io>
This commit is contained in:
xermicus
2024-05-14 11:00:05 +02:00
parent 3eadcb1c40
commit ed4508fa9a
1 changed files with 81 additions and 28 deletions
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crates/llvm-context/src/polkavm/evm/event.rs
+81 -28
View File
@@ -7,11 +7,6 @@ use crate::polkavm::Dependency;
use crate::polkavm_const::runtime_api;
/// Translates a log or event call.
///
/// TODO: Splitting up into dedicated functions (log0..log4)
/// could potentially decrease code sizes (LLVM can still decide to inline).
/// However, passing many i256 parameters could also hurt a bit.
/// Should be reviewed after 64bit support.
pub fn log<'ctx, D>(
context: &mut Context<'ctx, D>,
input_offset: inkwell::values::IntValue<'ctx>,
@@ -29,14 +24,48 @@ where
"event_input_offset",
)?;
let arguments = if topics.is_empty() {
[
context.xlen_type().const_zero().as_basic_value_enum(),
context.xlen_type().const_zero().as_basic_value_enum(),
input_pointer.as_basic_value_enum(),
input_length.as_basic_value_enum(),
]
} else {
if topics.is_empty() {
let _ = context.build_runtime_call(
runtime_api::DEPOSIT_EVENT,
&[
context.xlen_type().const_zero().as_basic_value_enum(),
context.xlen_type().const_zero().as_basic_value_enum(),
input_pointer.as_basic_value_enum(),
input_length.as_basic_value_enum(),
],
);
return Ok(());
}
let name = match topics.len() {
1 => "__log_1",
2 => "__log_2",
3 => "__log_3",
4 => "__log_4",
_ => unreachable!(),
};
let function = context.module().get_function(name).unwrap_or_else(|| {
let position = context.basic_block();
let mut parameters = vec![context.xlen_type().into(), context.xlen_type().into()];
parameters.extend_from_slice(
&topics
.iter()
.map(|_| context.word_type().into())
.collect::<Vec<_>>(),
);
let function = context.module().add_function(
name,
context.void_type().fn_type(&parameters, false),
None,
);
let block_entry = context.llvm().append_basic_block(function, "entry");
context.set_basic_block(block_entry);
let parameters = function.get_param_iter().collect::<Vec<_>>();
let topics = &parameters[2..];
let input_offset = parameters.first().unwrap();
let input_length = parameters.get(1).unwrap();
let topics_buffer_size = topics.len() * revive_common::BYTE_LENGTH_WORD;
let topics_buffer_pointer = context.build_alloca(
context.byte_type().array_type(topics_buffer_size as u32),
@@ -46,35 +75,59 @@ where
let topic_buffer_offset = context
.xlen_type()
.const_int((n * revive_common::BYTE_LENGTH_WORD) as u64, false);
context.build_store(
context.build_gep(
topics_buffer_pointer,
&[context.xlen_type().const_zero(), topic_buffer_offset],
context.byte_type(),
"topic_buffer_gep",
),
context.build_byte_swap(topic.as_basic_value_enum())?,
)?;
context
.build_store(
context.build_gep(
topics_buffer_pointer,
&[context.xlen_type().const_zero(), topic_buffer_offset],
context.byte_type(),
"topic_buffer_gep",
),
context
.build_byte_swap(topic.as_basic_value_enum())
.unwrap(),
)
.unwrap();
}
[
let arguments = [
context
.builder()
.build_ptr_to_int(
topics_buffer_pointer.value,
context.xlen_type(),
"event_topics_offset",
)?
)
.unwrap()
.as_basic_value_enum(),
context
.xlen_type()
.const_int(topics_buffer_size as u64, false)
.as_basic_value_enum(),
input_pointer.as_basic_value_enum(),
input_offset.as_basic_value_enum(),
input_length.as_basic_value_enum(),
]
};
];
let _ = context.build_runtime_call(runtime_api::DEPOSIT_EVENT, &arguments);
let _ = context.build_runtime_call(runtime_api::DEPOSIT_EVENT, &arguments);
context.builder().build_return(None).unwrap();
context.set_basic_block(position);
function
});
let mut arguments = vec![
input_pointer.as_basic_value_enum().into(),
input_length.as_basic_value_enum().into(),
];
arguments.extend_from_slice(
&topics
.iter()
.map(|value| value.as_basic_value_enum().into())
.collect::<Vec<_>>(),
);
let _ = context
.builder()
.build_direct_call(function, &arguments[..], "call_log");
Ok(())
}