25 releases
new 0.2.1 | Nov 25, 2024 |
---|---|
0.1.22 | Aug 7, 2023 |
0.1.20 | Jul 27, 2023 |
0.1.12 | Mar 6, 2023 |
0.1.3 | Nov 29, 2022 |
#253 in WebAssembly
387 downloads per month
225KB
5.5K
SLoC
wasmgdb
Think gdb for WebAssembly
Install
cargo install wasmgdb
Usage
Use wasm-coredump-rewriter to transform your module and, once WebAssembly traps, collect the WebAssembly memory and analyze the coredump.
Analyze a coredump
wasmgdb <source.wasm> <coredump.data>
Commands
bt
Display the stack trace.
f <#>
Selects a stack frame and display informations.
p <expr>
Inspect the content of a variable.
Requires to select the frame with f
first.
p *<expr>
Inspect the content of a variable after dereferencing it.
Requires to select the frame with f
first.
p/s <expr>
Print the variable as string.
Requires to select the frame with f
first.
p (<type>) <expr>
Print the content of as .
x/<number> <hex-addr>
Examine the memory address at with length.
x/<number>s <hex-addr>
Examine the memory address at and prints as string of length.
find <expr>
Find the as bytes in memory.
Usage:
find <start-addr>, <end-addr>, <expr>
find <expr>
info types
List all defined types.
info locals
List local values (includes Wasm func arguments).
info symbol <funcidx>
Get informations about the function at the given index.
info imports
List WebAssembly module's imported functions from the host.
info functions
List all defined functions.
info globals
List globals.
info process
Information about the process.
Expr
- Member access:
<object>-><member>
- Cast:
(<type>) <hex-addr>
- String:
"<string>"
Dependencies
~29–44MB
~678K SLoC