private int computeStackOffsetFromStructOffset(int structOffset) {
		return structOffset - negativeLength + parameterOffset; //  structOffset + negativeLength - parameterOffset;
	}
Get a formatted signed-hex value
@param offset the value to be formatted
@param showPrefix if true the "0x" hex prefix will be included
@return formatted signed-hex value
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/stackeditor/StackFrameDataType.java