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Unwind String.indexOf intrinsic on AArch64 #193

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Mar 18, 2025
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Unwind String.indexOf intrinsic on AArch64 #193

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9 changes: 8 additions & 1 deletion ddprof-lib/src/main/cpp/stackFrame_aarch64.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -98,7 +98,14 @@ bool StackFrame::unwindStub(instruction_t *entry, const char *name,
pc = ((uintptr_t *)sp)[-1];
return true;
}
}
} else if (strncmp(name, "indexof_linear_", 15) == 0 &&
entry != NULL && entry[0] == 0xa9be57f4 && entry[1] == 0xa9015ff6) {
// JDK-8189103: String.indexOf intrinsic.
// Entry and exit are covered by the very first 'if', in all other cases SP is 4 words off.
sp += 32;
pc = link();
return true;
}
return false;
}

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