[wasm][coreclr] Add scripts to generate the helpers

docs/workflow/wasm-documentation.md

@@ -49,6 +49,10 @@ This document serves as a guide for contributors to the WebAssembly implementati
 
 For debugging instructions including VS Code and Chrome DevTools setup, see the [WebAssembly Debugging Reference](debugging/mono/wasm-debugging.md).
 
+### Running coreclr callhelpers generator
+
+After building the runtime, use the `generate-coreclr-helpers` script for your platform (`.cmd` or `.sh`) in `src/tasks/WasmAppBuilder` to [re]generate the call helpers in `src/coreclr/vm/wasm`.
+
 ## Features and Configuration
 
 ### Runtime Features

src/tasks/WasmAppBuilder/WasmAppBuilder.csproj

@@ -44,7 +44,7 @@
   <UsingTask TaskName="ManagedToNativeGenerator" Runtime="NET" TaskFactory="TaskHostFactory" AssemblyFile="$(TargetPath)" />
   <Target Name="RunGenerator" DependsOnTargets="Build" Condition="'$(AssembliesScanPath)' != ''">
       <ItemGroup>
-        <WasmPInvokeAssembly Include="$(AssembliesScanPath)**/*.dll" />
+        <WasmPInvokeAssembly Include="$(AssembliesScanPath)*.dll" />
         <WasmPInvokeModule Include="libSystem.Native" />
         <WasmPInvokeModule Include="libSystem.Native.Browser" />
         <WasmPInvokeModule Include="libSystem.IO.Compression.Native" />

src/tasks/WasmAppBuilder/generate-coreclr-helpers.cmd

@@ -0,0 +1,92 @@
+@echo off
+setlocal enabledelayedexpansion
+
+:: Default configuration
+set "configuration=Debug"
+set "scan_path_override="
+
+set "usage=Usage: %~nx0 [options]"
+set "usage=!usage!^
+
+^
+
+Options:^
+
+  -c, --configuration ^<Checked^|Debug^|Release^>  Build configuration (default: Debug)^
+
+  -s, --scan-path ^<path^>                       Override the default scan path^
+
+  -h, --help                                   Show this help message"
+
+:parse_args
+if "%~1"=="" goto :done_args
+if /i "%~1"=="-c" goto :set_configuration
+if /i "%~1"=="--configuration" goto :set_configuration
+if /i "%~1"=="-s" goto :set_scan_path
+if /i "%~1"=="--scan-path" goto :set_scan_path
+if /i "%~1"=="-h" goto :show_help
+if /i "%~1"=="--help" goto :show_help
+
+echo Unknown option: %~1
+echo !usage!
+exit /b 1
+
+:set_configuration
+set "configuration=%~2"
+shift
+shift
+goto :parse_args
+
+:set_scan_path
+set "scan_path_override=%~2"
+shift
+shift
+goto :parse_args
+
+:show_help
+echo !usage!
+exit /b 0
+
+:done_args
+
+:: Validate configuration to prevent injection
+if /i not "%configuration%"=="Debug" if /i not "%configuration%"=="Release" if /i not "%configuration%"=="Checked" (
+    echo Error: Invalid configuration "%configuration%". Must be Debug, Release, or Checked.
+    exit /b 1
+)
+
+:: Get the repo root (script is in src/tasks/WasmAppBuilder)
+set "script_dir=%~dp0"
+pushd "%script_dir%..\..\..\"
+set "repo_root=%CD%"
+popd
+
+echo Configuration: %configuration%
+echo Repo root: %repo_root%
+
+if not "%scan_path_override%"=="" (
+    set "scan_path=%scan_path_override%"
+) else (
+    set "scan_path=%repo_root%\artifacts\bin\testhost\net11.0-browser-%configuration%-wasm\shared\Microsoft.NETCore.App\11.0.0\"
+)
+
+if not exist "%scan_path%" (
+    echo Error: Scan path does not exist: %scan_path%
+    echo Please build the runtime first using: .\build.cmd clr+libs -os browser -c %configuration%
+    exit /b 1
+)
+
+cd /d "%repo_root%"
+echo Scan path: %scan_path%
+
+:: Run the generator - invoke directly without building a command string
+echo Running generator...
+echo .\dotnet.cmd build /t:RunGenerator /p:RuntimeFlavor=CoreCLR "/p:GeneratorOutputPath=%repo_root%\src\coreclr\vm\wasm\" "/p:AssembliesScanPath=%scan_path%" src\tasks\WasmAppBuilder\WasmAppBuilder.csproj
+.\dotnet.cmd build /t:RunGenerator /p:RuntimeFlavor=CoreCLR "/p:GeneratorOutputPath=%repo_root%\src\coreclr\vm\wasm\" "/p:AssembliesScanPath=%scan_path%" src\tasks\WasmAppBuilder\WasmAppBuilder.csproj
+
+if errorlevel 1 (
+    echo Generator failed!
+    exit /b 1
+)
+
+echo Done!

src/tasks/WasmAppBuilder/generate-coreclr-helpers.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Default configuration
+configuration="Debug"
+scan_path_override=""
+
+usage="Usage: $0 [options]
+
+Options:
+  -c, --configuration <Checked|Debug|Release>  Build configuration (default: Debug)
+  -s, --scan-path <path>                       Override the default scan path
+  -h, --help                                   Show this help message"
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        -c|--configuration)
+            configuration="$2"
+            shift 2
+            ;;
+        -s|--scan-path)
+            scan_path_override="$2"
+            shift 2
+            ;;
+        -h|--help)
+            echo "$usage"
+            exit 0
+            ;;
+        *)
+            echo "Unknown option: $1"
+            echo "$usage"
+            exit 1
+            ;;
+    esac
+done
+
+# Validate configuration to prevent injection (case-insensitive)
+config_lower="$(echo "$configuration" | tr '[:upper:]' '[:lower:]')"
+case "$config_lower" in
+    debug|release|checked)
+        ;;
+    *)
+        echo "Error: Invalid configuration \"$configuration\". Must be Debug, Release, or Checked."
+        exit 1
+        ;;
+esac
+
+# Get the repo root (script is in src/tasks/WasmAppBuilder)
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(cd "$script_dir/../../.." && pwd)"
+
+echo "Configuration: $configuration"
+echo "Repo root: $repo_root"
+
+if [[ -n "$scan_path_override" ]]; then
+    scan_path="$scan_path_override"
+else
+    scan_path="$repo_root/artifacts/bin/testhost/net11.0-browser-$configuration-wasm/shared/Microsoft.NETCore.App/11.0.0/"
+fi
+
+if [[ ! -d "$scan_path" ]]; then
+    echo "Error: Scan path does not exist: $scan_path"
+    echo "Please build the runtime first using: ./build.sh clr+libs -os browser -c $configuration"
+    exit 1
+fi
+
+cd "$repo_root"
+echo "Scan path: $scan_path"
+
+# Run the generator - invoke directly without building a command string
+echo "Running generator..."
+echo "./dotnet.sh build /t:RunGenerator /p:RuntimeFlavor=CoreCLR /p:GeneratorOutputPath=$repo_root/src/coreclr/vm/wasm/ /p:AssembliesScanPath=$scan_path src/tasks/WasmAppBuilder/WasmAppBuilder.csproj"
+./dotnet.sh build /t:RunGenerator /p:RuntimeFlavor=CoreCLR "/p:GeneratorOutputPath=$repo_root/src/coreclr/vm/wasm/" "/p:AssembliesScanPath=$scan_path" src/tasks/WasmAppBuilder/WasmAppBuilder.csproj
+
+echo "Done!"