Merge branch 'master' into features/llvm-windows

CHANGELOG.md

@@ -28,6 +28,8 @@ Blocks of changes will separated by version increments.
   - makes wasitests-generate output stdout/stderr by default & adds function to print stdout and stderr for a command if it fails
   - compiles wasm with size optimizations & strips generated wasm with wasm-strip
 - [#554](https://github.com/wasmerio/wasmer/pull/554) Finish implementation of `wasi::fd_seek`, fix bug in filestat
+- [#550](https://github.com/wasmerio/wasmer/pull/550) Fix singlepass compilation error with `imul` instruction
+
 
 ## 0.5.5 - 2019-07-10
 - [#541](https://github.com/wasmerio/wasmer/pull/541) Fix dependency graph by making separate test crates; ABI implementations should not depend on compilers. Add Cranelift fork as git submodule of clif-backend
@@ -41,6 +43,7 @@ Blocks of changes will separated by version increments.
 - [#523](https://github.com/wasmerio/wasmer/pull/523) Update wapm version to fix bug related to signed packages in the global namespace and locally-stored public keys
 
 ## 0.5.2 - 2019-07-02
+- [#516](https://github.com/wasmerio/wasmer/pull/516) Add workaround for singlepass miscompilation on GetLocal
 - [#521](https://github.com/wasmerio/wasmer/pull/521) Update Wapm-cli, bump version numbers
 - [#518](https://github.com/wasmerio/wasmer/pull/518) Update Cranelift and WasmParser
 - [#514](https://github.com/wasmerio/wasmer/pull/514) [#519](https://github.com/wasmerio/wasmer/pull/519) Improved Emscripten network related calls, added a null check to `WasmPtr`

Dockerfile.build

@@ -0,0 +1,13 @@
+FROM ubuntu:19.04
+
+ARG RUST_TOOLCHAIN="nightly"
+
+ENV CARGO_HOME=/usr/local/rust
+ENV RUSTUP_HOME=/usr/local/rust
+ENV PATH="$PATH:$CARGO_HOME/bin"
+
+RUN apt-get update \
+    && apt-get -y install sudo strace curl cmake pkg-config python libssl-dev llvm-dev libz-dev gnuplot-nox \
+    && echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers \
+    && echo '%wheel ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers \
+    && curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain "$RUST_TOOLCHAIN"

build

@@ -0,0 +1,79 @@
+#!/bin/bash
+
+# Wasmer build tool
+#
+# This is a script to build Wasmer in a Docker sandbox.
+#
+# To use the script, first make sure Docker is installed. Then build the
+# sandbox image with:
+#
+#   docker build --file Dockerfile.build --tag wasmer-build .
+#
+# After the sandbox image is built successfully, you can run commands in it
+# with this script.
+#
+# For example, to build Wasmer, run:
+#
+#   ./build make
+#
+# To test Wasmer, run:
+#
+#   ./build make test
+#
+# and so on.
+
+docker_hostname="wasmer-build"
+
+docker_img="wasmer-build"
+
+docker_workdir="/wasmer"
+
+docker_args=(
+  #
+  # General config.
+  #
+  --hostname=${docker_hostname}
+  --interactive
+  --network=host
+  --rm
+  --tty
+
+  #
+  # User and group config.
+  #
+  # Use the same user and group permissions as host to make integration
+  # between host and container simple.
+  #
+  --user "$(id --user):$(id --group)"
+  --volume "/etc/group:/etc/group:ro"
+  --volume "/etc/passwd:/etc/passwd:ro"
+  --volume "/etc/shadow:/etc/shadow:ro"
+
+  #
+  # Time zone config.
+  #
+  # Use the same time zone as the host.
+  #
+  --volume "/etc/localtime:/etc/localtime:ro"
+
+  #
+  # Linux capabilities.
+  #
+  # Add SYS_PTRACE capability to the container so that people can run
+  # `strace'.
+  #
+  --cap-add SYS_PTRACE
+
+  #
+  # Source directory.
+  #
+  --workdir=${docker_workdir}
+  --volume "$(pwd):${docker_workdir}:z"
+
+  #
+  # Environment variables.
+  #
+  --env "CARGO_HOME=${docker_workdir}/.cargo"
+)
+
+docker run ${docker_args[@]} ${docker_img} $*

fuzz/README.md

@@ -33,6 +33,19 @@ INFO: seed corpus: files: 8 min: 1b max: 1b total: 8b rss: 133Mb
 ```
 It will continue to generate random inputs forever, until it finds a bug or is terminated. The testcases for bugs it finds go into `fuzz/artifacts/simple_instantiate` and you can rerun the fuzzer on a single input by passing it on the command line `cargo fuzz run simple_instantiate my_testcase.wasm`.
 
+## Seeding the corpus, optional
+
+The fuzzer works best when it has examples of small Wasm files to start with. Using `wast2json` from [wabt](https://github.com/WebAssembly/wabt), we can easily produce `.wasm` files out of the WebAssembly spec tests.
+
+```sh
+mkdir spec-test-corpus
+for i in lib/spectests/spectests/*.wast; do wast2json $i -o spec-test-corpus/$(basename $i).json; done
+mv spec-test-corpus/*.wasm fuzz/corpus/simple_instantiate/
+rm -r spec-test-corpus
+```
+
+The corpus directory is created on the first run of the fuzzer. If it doesn't exist, run it first and then seed the corpus. The fuzzer will pick up new files added to the corpus while it is running.
+
 ## Trophy case
 
 - [x] https://github.com/wasmerio/wasmer/issues/558

lib/runtime-core/src/codegen.rs

@@ -1,6 +1,6 @@
 use crate::{
     backend::RunnableModule,
-    backend::{Backend, CacheGen, Compiler, CompilerConfig, Token},
+    backend::{Backend, CacheGen, Compiler, CompilerConfig, Features, Token},
     cache::{Artifact, Error as CacheError},
     error::{CompileError, CompileResult},
     module::{ModuleInfo, ModuleInner},
@@ -137,12 +137,12 @@ impl<
     }
 }
 
-pub fn default_validating_parser_config() -> wasmparser::ValidatingParserConfig {
+pub fn validating_parser_config(features: &Features) -> wasmparser::ValidatingParserConfig {
     wasmparser::ValidatingParserConfig {
         operator_config: wasmparser::OperatorValidatorConfig {
             enable_threads: false,
             enable_reference_types: false,
-            enable_simd: true,
+            enable_simd: features.simd,
             enable_bulk_memory: false,
             enable_multi_value: false,
         },
@@ -150,9 +150,9 @@ pub fn default_validating_parser_config() -> wasmparser::ValidatingParserConfig
     }
 }
 
-fn validate(bytes: &[u8]) -> CompileResult<()> {
+fn validate_with_features(bytes: &[u8], features: &Features) -> CompileResult<()> {
     let mut parser =
-        wasmparser::ValidatingParser::new(bytes, Some(default_validating_parser_config()));
+        wasmparser::ValidatingParser::new(bytes, Some(validating_parser_config(features)));
     loop {
         let state = parser.read();
         match *state {
@@ -180,7 +180,7 @@ impl<
         _: Token,
     ) -> CompileResult<ModuleInner> {
         if requires_pre_validation(MCG::backend_id()) {
-            validate(wasm)?;
+            validate_with_features(wasm, &compiler_config.features)?;
         }
 
         let mut mcg = MCG::new();

lib/runtime-core/src/parse.rs

@@ -85,8 +85,10 @@ pub fn read_module<
         custom_sections: HashMap::new(),
     }));
 
-    let mut parser =
-        wasmparser::ValidatingParser::new(wasm, Some(default_validating_parser_config()));
+    let mut parser = wasmparser::ValidatingParser::new(
+        wasm,
+        Some(validating_parser_config(&compiler_config.features)),
+    );
 
     let mut namespace_builder = Some(StringTableBuilder::new());
     let mut name_builder = Some(StringTableBuilder::new());

lib/spectests/build/spectests.rs

@@ -86,7 +86,7 @@ use wasmer_runtime_core::types::Value;
 use wasmer_runtime_core::{{Instance, module::Module}};
 use wasmer_runtime_core::error::Result;
 use wasmer_runtime_core::vm::Ctx;
-use wasmer_runtime_core::backend::Compiler;
+use wasmer_runtime_core::backend::{Compiler, CompilerConfig, Features};
 
 static IMPORT_MODULE: &str = r#"
 (module
@@ -136,7 +136,7 @@ pub fn generate_imports() -> ImportObject {
     let mut features = wabt::Features::new();
     features.enable_simd();
     let wasm_binary = wat2wasm_with_features(IMPORT_MODULE.as_bytes(), features).expect("WAST not valid or malformed");
-    let module = wasmer_runtime_core::compile_with(&wasm_binary[..], &get_compiler())
+    let module = wasmer_runtime_core::compile_with_config(&wasm_binary[..], &get_compiler(), CompilerConfig { features: Features { simd: true }, ..Default::default() })
         .expect("WASM can't be compiled");
     let instance = module
         .instantiate(&ImportObject::new())
@@ -408,7 +408,7 @@ fn test_module_{}() {{
     let module_str = \"{}\";
     println!(\"{{}}\", module_str);
     let wasm_binary = wat2wasm(module_str.as_bytes()).expect(\"WAST not valid or malformed\");
-    let module = wasmer_runtime_core::compile_with(&wasm_binary[..], &get_compiler()).expect(\"WASM can't be compiled\");
+    let module = wasmer_runtime_core::compile_with_config(&wasm_binary[..], &get_compiler(), CompilerConfig {{ features: Features {{ simd: true }}, ..Default::default() }}).expect(\"WASM can't be compiled\");
     module.instantiate(&generate_imports()).expect(\"WASM can't be instantiated\")
 }}\n",
                 self.last_module,
@@ -431,7 +431,7 @@ fn test_module_{}() {{
                 "#[test]
 fn {}_assert_invalid() {{
     let wasm_binary = {:?};
-    let module = wasmer_runtime_core::compile_with(&wasm_binary, &get_compiler());
+    let module = wasmer_runtime_core::compile_with_config(&wasm_binary, &get_compiler(), CompilerConfig {{ features: Features {{ simd: true }}, ..Default::default() }});
     assert!(module.is_err(), \"WASM should not compile as is invalid\");
 }}\n",
                 command_name,
@@ -562,7 +562,7 @@ fn {}_assert_invalid() {{
                 "#[test]
 fn {}_assert_malformed() {{
     let wasm_binary = {:?};
-    let compilation = wasmer_runtime_core::compile_with(&wasm_binary, &get_compiler());
+    let compilation = wasmer_runtime_core::compile_with_config(&wasm_binary, &get_compiler(), CompilerConfig {{ features: Features {{ simd: true }}, ..Default::default() }});
     assert!(compilation.is_err(), \"WASM should not compile as is malformed\");
 }}\n",
                 command_name,

src/bin/wasmer.rs

@@ -438,6 +438,9 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
                         CompilerConfig {
                             symbol_map: em_symbol_map,
                             track_state,
+                            features: Features {
+                                simd: options.features.simd || options.features.all,
+                            },
                             ..Default::default()
                         },
                         &*compiler,