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debug_log and debug_mem #2

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debug_log and debug_mem #2

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5 changes: 5 additions & 0 deletions src/lib.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import { TWO_POW256 } from 'ethereumjs-util'

let mem: WebAssembly.Memory
let res: Buffer
res = Buffer.alloc(32)
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@cdetrio cdetrio Aug 12, 2019

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This prevents a crash if eth2_savePostStateRoot is never called (cli.ts crashes if res is undefined).


export const setMemory = (m: WebAssembly.Memory) => {
mem = m
Expand Down Expand Up @@ -54,6 +55,10 @@ export const getImports = (env: EnvData) => {
eth2_savePostStateRoot: (ptr: number) => {
res = memget(mem, ptr, 32)
},
debug_log: (ptr: number) => console.log('debug_log:', ptr),
debug_mem: (ptr: number, len: number) => {
console.log(len + ' bytes at mem pos ' + ptr + ':', memget(mem, ptr, len).toString('hex'))
},
debug_startTimer: () => console.log('start timer'),
debug_endTimer: () => console.log('end timer'),
abort: () => { throw ('Wasm aborted') }
Expand Down