WABT(1) General Commands Manual WABT(1)

wasm-interp — decode and run a WebAssembly binary file

wasm-interp [options] file

wasm-interp Read a file in the wasm binary format, and run it in a stack-based interpreter.

The options are as follows:

Print a help message
Print version information
, --verbose
Use multiple times for more info
Enable Experimental exception handling
Disable Import/export mutable globals
Disable Saturating float-to-int operators
Disable Sign-extension operators
Disable SIMD support
Enable Threading support
Enable Typed function references
Disable Multi-value
Enable Tail-call support
Disable Bulk-memory operations
Disable Reference types (externref)
Enable Custom annotation syntax
Enable Code metadata
Enable Garbage collection
Enable 64-bit memory
Enable Multi-memory
Enable Extended constant expressions
Enable all features
, --value-stack-size=SIZE
Size in elements of the value stack
, --call-stack-size=SIZE
Size in elements of the call stack
, --trace
Trace execution
Assume input module is WASI compliant (Export WASI API the the module and invoke _start function)
, --env=ENV
Pass the given environment string in the WASI runtime
, --dir=DIR
Pass the given directory the the WASI runtime
Run all the exported functions, in order. Useful for testing
Include an importable function named "host.print" for printing to stdout
Provide a dummy implementation of all imported functions. The function will log the call and return an appropriate zero value.

Parse binary file test.wasm, and type-check it

$ wasm-interp test.wasm

Parse test.wasm and run all its exported functions

$ wasm-interp test.wasm --run-all-exports

Parse test.wasm, run the exported functions and trace the output

$ wasm-interp test.wasm --run-all-exports --trace

Parse test.wasm and run all its exported functions, setting the value stack size to 100 elements

$ wasm-interp test.wasm -V 100 --run-all-exports

wasm-decompile(1), wasm-objdump(1), wasm-stats(1), wasm-strip(1), wasm-validate(1), wasm2c(1), wasm2wat(1), wast2json(1), wat-desugar(1), wat2wasm(1), spectest-interp(1)

If you find a bug, please report it at
https://github.com/WebAssembly/wabt/issues.

January 31, 2025 Debian