From a8269d7c0bf5e4c21d5d5dbb728e0ba4c63fa50e Mon Sep 17 00:00:00 2001 From: Henry Gressmann Date: Tue, 19 Dec 2023 17:42:00 +0100 Subject: feat: import section Signed-off-by: Henry Gressmann --- crates/parser/src/conversion.rs | 84 +++++++++++++++++++++++++++++------------ crates/parser/src/module.rs | 20 +++++----- crates/tinywasm/tests/mvp.csv | 2 +- crates/types/src/lib.rs | 25 +++++++++++- 4 files changed, 94 insertions(+), 37 deletions(-) diff --git a/crates/parser/src/conversion.rs b/crates/parser/src/conversion.rs index fb48321..1594bf7 100644 --- a/crates/parser/src/conversion.rs +++ b/crates/parser/src/conversion.rs @@ -1,53 +1,87 @@ use alloc::{boxed::Box, format, string::ToString, vec::Vec}; use log::info; use tinywasm_types::{ - BlockArgs, ConstInstruction, Export, ExternalKind, FuncType, Global, Instruction, MemArg, MemoryArch, MemoryType, - TableType, ValType, + BlockArgs, ConstInstruction, Export, ExternalKind, FuncType, Global, GlobalType, Import, ImportKind, Instruction, + MemArg, MemoryArch, MemoryType, TableType, ValType, }; use wasmparser::{FuncValidator, ValidatorResources}; use crate::{module::CodeSection, Result}; +pub(crate) fn convert_module_imports<'a, T: IntoIterator>>>( + imports: T, +) -> Result> { + let imports = imports + .into_iter() + .map(|import| convert_module_import(import?)) + .collect::>>()?; + Ok(imports) +} + +pub(crate) fn convert_module_import<'a>(import: wasmparser::Import<'a>) -> Result { + Ok(Import { + module: import.module.to_string(), + name: import.name.to_string(), + kind: match import.ty { + wasmparser::TypeRef::Func(ty) => ImportKind::Func(ty), + wasmparser::TypeRef::Table(ty) => ImportKind::Table(convert_module_table(ty)?), + wasmparser::TypeRef::Memory(ty) => ImportKind::Mem(convert_module_memory(ty)?), + wasmparser::TypeRef::Global(ty) => ImportKind::Global(GlobalType { + mutable: ty.mutable, + ty: convert_valtype(&ty.content_type), + }), + wasmparser::TypeRef::Tag(ty) => { + return Err(crate::ParseError::UnsupportedOperator(format!( + "Unsupported import kind: {:?}", + ty + ))) + } + }, + }) +} + pub(crate) fn convert_module_memories>>( memory_types: T, ) -> Result> { let memory_type = memory_types .into_iter() - .map(|memory| { - let memory = memory?; - Ok(MemoryType { - arch: match memory.memory64 { - true => MemoryArch::I64, - false => MemoryArch::I32, - }, - page_count_initial: memory.initial, - page_count_max: memory.maximum, - }) - }) + .map(|memory| convert_module_memory(memory?)) .collect::>>()?; Ok(memory_type) } +pub(crate) fn convert_module_memory(memory: wasmparser::MemoryType) -> Result { + Ok(MemoryType { + arch: match memory.memory64 { + true => MemoryArch::I64, + false => MemoryArch::I32, + }, + page_count_initial: memory.initial, + page_count_max: memory.maximum, + }) +} + pub(crate) fn convert_module_tables>>( table_types: T, ) -> Result> { let table_type = table_types .into_iter() - .map(|table| { - let table = table?; - let ty = convert_valtype(&table.element_type); - Ok(TableType { - element_type: ty, - size_initial: table.initial, - size_max: table.maximum, - }) - }) + .map(|table| convert_module_table(table?)) .collect::>>()?; Ok(table_type) } +pub(crate) fn convert_module_table(table: wasmparser::TableType) -> Result { + let ty = convert_valtype(&table.element_type); + Ok(TableType { + element_type: ty, + size_initial: table.initial, + size_max: table.maximum, + }) +} + pub(crate) fn convert_module_globals<'a, T: IntoIterator>>>( globals: T, ) -> Result> { @@ -70,9 +104,11 @@ pub(crate) fn convert_module_globals<'a, T: IntoIterator>>()?; diff --git a/crates/parser/src/module.rs b/crates/parser/src/module.rs index ea6aaad..790b9a2 100644 --- a/crates/parser/src/module.rs +++ b/crates/parser/src/module.rs @@ -1,7 +1,7 @@ use crate::log::debug; use alloc::{boxed::Box, format, vec::Vec}; use core::fmt::Debug; -use tinywasm_types::{Export, FuncType, Global, Instruction, MemoryType, TableType, ValType}; +use tinywasm_types::{Export, FuncType, Global, Import, Instruction, MemoryType, TableType, ValType}; use wasmparser::{Payload, Validator}; use crate::{conversion, ParseError, Result}; @@ -24,10 +24,10 @@ pub struct ModuleReader { pub globals: Vec, pub table_types: Vec, pub memory_types: Vec, + pub imports: Vec, // pub element_section: Option>, // pub data_section: Option>, - // pub import_section: Option>, pub end_reached: bool, } @@ -42,9 +42,9 @@ impl Debug for ModuleReader { .field("globals", &self.globals) .field("table_types", &self.table_types) .field("memory_types", &self.memory_types) + .field("import_section", &self.imports) // .field("element_section", &self.element_section) // .field("data_section", &self.data_section) - // .field("import_section", &self.import_section) .finish() } } @@ -116,7 +116,6 @@ impl ModuleReader { if !self.code.is_empty() { return Err(ParseError::DuplicateSection("Code section".into())); } - validator.code_section_start(count, &range)?; } CodeSectionEntry(function) => { @@ -127,12 +126,13 @@ impl ModuleReader { self.code .push(conversion::convert_module_code(function, func_validator)?); } - ImportSection(_reader) => { - return Err(ParseError::UnsupportedSection("Import section".into())); - - // debug!("Found import section"); - // validator.import_section(&reader)?; - // self.import_section = Some(reader); + ImportSection(reader) => { + debug!("Found import section"); + validator.import_section(&reader)?; + self.imports = reader + .into_iter() + .map(|i| conversion::convert_module_import(i?)) + .collect::>>()?; } ExportSection(reader) => { debug!("Found export section"); diff --git a/crates/tinywasm/tests/mvp.csv b/crates/tinywasm/tests/mvp.csv index ba6edeb..0cc9b3f 100644 --- a/crates/tinywasm/tests/mvp.csv +++ b/crates/tinywasm/tests/mvp.csv @@ -1,4 +1,4 @@ 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diff --git a/crates/types/src/lib.rs b/crates/types/src/lib.rs index 387a878..a6cf037 100644 --- a/crates/types/src/lib.rs +++ b/crates/types/src/lib.rs @@ -28,7 +28,7 @@ extern crate alloc; mod instructions; use core::fmt::Debug; -use alloc::boxed::Box; +use alloc::{boxed::Box, string::String}; pub use instructions::*; /// A TinyWasm WebAssembly Module @@ -302,9 +302,14 @@ pub struct Export { #[derive(Debug, Clone)] pub struct Global { + pub ty: GlobalType, + pub init: ConstInstruction, +} + +#[derive(Debug, Clone)] +pub struct GlobalType { pub mutable: bool, pub ty: ValType, - pub init: ConstInstruction, } #[derive(Debug, Clone)] @@ -329,3 +334,19 @@ pub enum MemoryArch { I32, I64, } + +#[derive(Debug, Clone)] +pub struct Import { + /// Represents an import in a WebAssembly module. + pub module: String, + pub name: String, + pub kind: ImportKind, +} + +#[derive(Debug, Clone)] +pub enum ImportKind { + Func(TypeAddr), + Table(TableType), + Mem(MemoryType), + Global(GlobalType), +} -- cgit v1.3.1