diff --git a/SetjmpLongjmp.md b/SetjmpLongjmp.md index df8c4af13..75c552eaa 100644 --- a/SetjmpLongjmp.md +++ b/SetjmpLongjmp.md @@ -11,13 +11,13 @@ To build an application using setjmp/longjmp, you need two things: ### Example without LTO ```shell -clang -Os -mllvm -wasm-enable-sjlj -o your_app.wasm your_app.c -lsetjmp +clang -Os -mllvm -wasm-enable-sjlj -o your_app.phase3.wasm your_app.c -lsetjmp ``` ### Example with LTO ```shell -clang -Os -flto=full -mllvm -wasm-enable-sjlj -Wl,-mllvm,-wasm-enable-sjlj -o your_app.wasm your_app.c -lsetjmp +clang -Os -flto=full -mllvm -wasm-enable-sjlj -Wl,-mllvm,-wasm-enable-sjlj -o your_app.phase3.wasm your_app.c -lsetjmp ``` ## Run an application @@ -34,24 +34,26 @@ Unfortunately, there are two incompatible versions of ### Example with the latest exception handling proposal -Because the current version of WASI-SDK produces an old version -of [exception handling proposal] instructions, if your runtime -implements the latest version of the proposal, you need to convert -your module to the latest version. +By default, the current version of WASI-SDK produces the +"phase3" version of [exception handling proposal] instructions. -[toywasm] is an example of such runtimes. +You can tell the llvm to produce the latest version of proposal by +specifying `-mllvm -wasm-use-legacy-eh=false`. This is expected +to be the default in a future version. -You can use binaryen `wasm-opt` command for the conversion. +Alternatively, you can use binaryen `wasm-opt` command to convert +existing modules from the "phase3" version to the "exnref" version. ```shell -wasm-opt --translate-to-exnref -all -o your_app.exnref.wasm your_app.wasm +wasm-opt --translate-to-exnref -all -o your_app.wasm your_app.phase3.wasm ``` -Then you can run it with a runtime supporting the latest version of -[exception handling proposal]. +Then you can run it with a runtime supporting the "exnref" version of +the proposal. +[toywasm] is an example of such runtimes. ```shell -toywasm --wasi your_app.exnref.wasm +toywasm --wasi your_app.wasm ``` (You may need to enable the support with `-D TOYWASM_ENABLE_WASM_EXCEPTION_HANDLING=ON`.) @@ -59,13 +61,13 @@ toywasm --wasi your_app.exnref.wasm If your runtime supports the [phase3] version of [exception handling proposal], which is the same version as what WASI-SDK -currently produces, you can run the produced module as it is. +currently produces by default, you can run the produced module as it is. For example, the classic interpreter of [wasm-micro-runtime] is one of such runtimes. ```shell -iwasm your_app.wasm +iwasm your_app.phase3.wasm ``` (You may need to enable the support with `-D WAMR_BUILD_EXCE_HANDLING=1 -D WAMR_BUILD_FAST_INTERP=0`.)