[wasm] Add wa-info tool to src/mono/wasm/tools #110565
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Currently it is able to read wasm modules and few sections, like Type,
Imports, Exports, Function
Example output:
> wa-info.exe -v dotnet.wasm
Reading wasm file: dotnet.wasm
WebAssembly binary format version: 1
Section: Type size: 3097 count: 339
Section: Import size: 2505 count: 102
Section: Function size: 17844 count: 17703
Section: Table size: 7
Section: Memory size: 7
Section: Global size: 19
Section: Export size: 2279 count: 98
Section: Element size: 8291
Section: Code size: 2000334
Section: Data size: 508697
Section: Custom size: 840366 name: name
Section: Custom size: 4063235 name: .debug_info
Section: Custom size: 1436986 name: .debug_loc
Section: Custom size: 141446 name: .debug_ranges
Section: Custom size: 241806 name: .debug_abbrev
Section: Custom size: 2032586 name: .debug_line
Section: Custom size: 739480 name: .debug_str
Read function code blocks, read locals
Read function, local, global and data segment name maps
Example use:
wa-info.exe -d --function-filter Json.*Measure dotnet.wasm
(func Wasm_Browser_Bench_Sample_Sample_JsonTask_get_Measurements(param i32 i32) (result i32))
local 1 i32
global_get
i32_const
i32_sub
local_tee $2
global_set
local_get $0
i32_eqz
if
call $mini_llvmonly_throw_nullref_exception
unreachable
local_get $2
local_get $0
i32_load
i32_store
local_get $2
i32_load
local_set $0
local_get $2
i32_const
i32_add
global_set
local_get $0
The function names map includes names of imports at the beginning
Fix indentation
Example output:
wa-info.exe -d --function-filter Wasm_Browser_Bench_Sample_Sample_ExceptionsTask_TryCatch_RunStep dotnet.wasm
(func Wasm_Browser_Bench_Sample_Sample_ExceptionsTask_TryCatch_RunStep(param i32 i32))
local 1 i32
global.get
i32.const 16
i32.sub
local.tee $2
global.set
local.get $2
local.get $0
i32.store
i32.const 1997558
i32.load8.u
i32.eqz
if
i32.const 1171316
call $mono_aot_Wasm_Browser_Bench_Sample_init_method
i32.const 1997558
i32.const 1
i32.store8
i32.const 1994984
i32.load
call $mini_llvmonly_get_interp_entry
local.set $0
local.get $2
local.get $2
i32.load
i32.store
local.get $2
i32.load
local.get $0
i32.load
local.get $0
i32.load
local.tee $0
call.indirect
local.get $2
i32.const 16
i32.add
global.set
Example:
(func System_Private_Runtime_InteropServices_JavaScript_System_Runtime_InteropServices_JavaScript_Runtime_GetCSOwnedObjectByJSHandle_int_int(param i32 i32 i32) (result i32))
local 1 i32
local 1 i32
global.get $__stack_pointer
i32.const 16
i32.sub
local.tee $3
global.set $__stack_pointer
i32.const 1947029
...
Example:
...
i32.load offset:12 align:2
i32.store offset:8 align:2
local.get $3
i32.load offset:8 align:2
local.set $0
local.get $3
i32.const 16
i32.add
global.set $__stack_pointer
...
ghost
added
the
3 tasks
This was referenced Feb 13, 2025
Closed
This was referenced Mar 3, 2025
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