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Test: Allow extdata fuzzing

This commit is contained in:
Vicki Pfau 2024-09-06 21:13:56 -07:00
parent a5ea157c9a
commit 3a07834226
1 changed files with 16 additions and 10 deletions
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26
src/platform/test/fuzz-main.c
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@ -109,7 +109,7 @@ int main(int argc, char** argv) {
}
if (fuzzOpts.ssOverlay) {
overlayOffset = fuzzOpts.overlayOffset;
if (overlayOffset < core->stateSize(core)) {
if (overlayOffset <= core->stateSize(core)) {
savestateOverlay = VFileOpen(fuzzOpts.ssOverlay, O_RDONLY);
}
free(fuzzOpts.ssOverlay);
@ -137,19 +137,25 @@ int main(int argc, char** argv) {
if (savestate) {
if (!savestateOverlay) {
mCoreLoadStateNamed(core, savestate, 0);
mCoreLoadStateNamed(core, savestate, SAVESTATE_ALL);
} else {
size_t size = core->stateSize(core);
uint8_t* state = malloc(size);
savestate->read(savestate, state, size);
savestateOverlay->read(savestateOverlay, state + overlayOffset, size - overlayOffset);
core->loadState(core, state);
free(state);
size_t size = savestate->size(savestate);
void* mapped = savestate->map(savestate, size, MAP_READ);
struct VFile* newState = VFileMemChunk(mapped, size);
savestate->unmap(savestate, mapped, size);
newState->seek(newState, overlayOffset, SEEK_SET);
uint8_t buffer[2048];
int read;
while ((read = savestateOverlay->read(savestateOverlay, buffer, sizeof(buffer))) > 0) {
newState->write(newState, buffer, read);
}
savestateOverlay->close(savestateOverlay);
savestateOverlay = 0;
savestateOverlay = NULL;
mCoreLoadStateNamed(core, newState, SAVESTATE_ALL);
newState->close(newState);
}
savestate->close(savestate);
savestate = 0;
savestate = NULL;
}
_fuzzRunloop(core, fuzzOpts.frames);