bug2046325.js - mozsearch

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// |jit-test| skip-if: !wasmDebuggingEnabled()

function hitsForFuncAtIndex(numImports) {

  let g = newGlobal({newCompartment: true});

  let dbg = new Debugger(g);

  let imports = "";

  for (let i = 0; i < numImports; i++) imports += '(import "m" "f" (func)) ';

  g.MODULE_TEXT =

      `(module ${imports}(func (nop) (nop)) (export "test" (func ${numImports})))`;

  g.eval(`

    var b = wasmTextToBinary(MODULE_TEXT);

    var m = new WebAssembly.Instance(new WebAssembly.Module(b), {m: {f: () => {}}});

`);

  let script = dbg.findScripts().filter(s => s.format == "wasm")[0];

  let offsets = script.getPossibleBreakpointOffsets();

  let hits = 0;

  for (let off of offsets) script.setBreakpoint(off, { hit: () => { hits++; } });

  g.eval("m.exports.test()");

  return hits;

// Use a variety of offsets in an attempt to shake out any errors relating to

// endianness or granularity in the associated debug-filter bitmap.

let indices = [0, 1, 3, 5, 7, 13, 27,   // uint32_t #0

               39, 55, 62,              // uint32_t #1

               70, 85, 94,              // uint32_t #2

               101, 117, 125,           // uint32_t #3

               130, 149];               // uint32_t #4

for (i of indices) {

  assertEq(hitsForFuncAtIndex(i), 2);