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NFC Factor out common code between updateGOT and reportUndefinedSymbols #22124

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NFC Factor out common code between updateGOT and reportUndefinedSymbols #22124

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e816e8c
NFC Factor out common code between updateGOT and reportUndefinedSymbols
hoodmane Jun 21, 2024
04ab50f
Merge branch 'main' into set-got-entry
kripken Jul 2, 2024
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56 changes: 24 additions & 32 deletions src/library_dylink.js
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Original file line number Diff line number Diff line change
Expand Up @@ -201,9 +201,30 @@ var LibraryDylink = {
#endif
;
},
$setGOTEntry__deps: ['$addFunction', '$getFunctionAddress'],
$setGOTEntry: (symName, value) => {
const entry = GOT[symName];
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It looks like both calls sites already have looked up the entry so perhaps we can pass the entry here too to avoid this extra lookup?

#if DYLINK_DEBUG == 2
dbg(`setGOTEntry: before: ${symName} : ${entry.value}`);
#endif
if (typeof value == 'function') {
entry.value = {{{ to64('addFunction(value, value.sig)') }}};
} else if (typeof value == 'number') {
entry.value = {{{ to64('value') }}};
#if MEMORY64
} else if (typeof value == 'bigint') {
entry.value = value;
#endif
} else {
throw new Error(`bad export type for '${symName}': ${typeof value}`);
}
#if DYLINK_DEBUG == 2
dbg(`setGOTEntry: after: ${symName} ${typeof value}: ${entry.value} (${value})`);
#endif
},

$updateGOT__internal: true,
$updateGOT__deps: ['$GOT', '$isInternalSym', '$addFunction', '$getFunctionAddress'],
$updateGOT__deps: ['$GOT', '$isInternalSym', '$setGOTEntry'],
$updateGOT: (exports, replace) => {
#if DYLINK_DEBUG
dbg("updateGOT: adding " + Object.keys(exports).length + " symbols");
Expand All @@ -223,22 +244,7 @@ var LibraryDylink = {

GOT[symName] ||= new WebAssembly.Global({'value': '{{{ POINTER_WASM_TYPE }}}', 'mutable': true});
if (replace || GOT[symName].value == 0) {
#if DYLINK_DEBUG == 2
dbg(`updateGOT: before: ${symName} : ${GOT[symName].value}`);
#endif
if (typeof value == 'function') {
GOT[symName].value = {{{ to64('addFunction(value)') }}};
#if DYLINK_DEBUG == 2
dbg(`updateGOT: FUNC: ${symName} : ${GOT[symName].value}`);
#endif
} else if (typeof value == {{{ POINTER_JS_TYPE }}}) {
GOT[symName].value = value;
} else {
err(`unhandled export type for '${symName}': ${typeof value}`);
}
#if DYLINK_DEBUG == 2
dbg(`updateGOT: after: ${symName} : ${GOT[symName].value} (${value})`);
#endif
setGOTEntry(symName, value);
}
#if DYLINK_DEBUG
else if (GOT[symName].value != value) {
Expand Down Expand Up @@ -303,21 +309,7 @@ var LibraryDylink = {
#if DYLINK_DEBUG == 2
dbg(`assigning dynamic symbol from main module: ${symName} -> ${prettyPrint(value)}`);
#endif
if (typeof value == 'function') {
/** @suppress {checkTypes} */
entry.value = {{{ to64('addFunction(value, value.sig)') }}};
#if DYLINK_DEBUG == 2
dbg(`assigning table entry for : ${symName} -> ${entry.value}`);
#endif
} else if (typeof value == 'number') {
entry.value = {{{ to64('value') }}};
#if MEMORY64
} else if (typeof value == 'bigint') {
entry.value = value;
#endif
} else {
throw new Error(`bad export type for '${symName}': ${typeof value}`);
}
setGOTEntry(symName, value);
}
}
#if DYLINK_DEBUG
Expand Down
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