Rikka0_0小六花 rikka0w0

The DVT module calls "sun.reflect.Reflection.getCallerClass".

The alternative method using StackWalker (since Java 9):

    public static Class<?> getCallerClass(int n) {
        try {
        	List<StackFrame> stack = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE).walk(s -> s.limit(n).collect(Collectors.toList()));
        	StackFrame stackFrame = stack.get(stack.size()-1);
        	return stackFrame.getDeclaringClass();
        } catch (Exception e) {

The problem

https://www.openstm32.org/forumthread8387#form

ENTRY org.eclipse.ui 4 0 2021-02-21 14:00:13.956
MESSAGE Unhandled event loop exception
STACK 0
java.lang.NoClassDefFoundError: org/eclipse/cdt/launch/ui/CMainTab

Solution 1: User Data at the end of flash

Define constants before MEMORY section:

/* EEPROM emulator */
_Flash_Page_Size = 0x400;	/* Page size of the flash in bytes, see MCU datasheet */
_User_Config_Size = 0x400;	/* Size of the emulated EEPROM in bytes, must be multiples of _Flash_Page_Size */

Define the section for non-volatile user data:

 /* Flash reserved for the EEPROM emulation at the end of the Flash*/

Usage

Download xtensa-lx106-elf-backtrace and place it anywhere that is in the $PATH variable.
cd to your project/build
Run xtensa-lx106-elf-backtrace "xxxxxxx", xxxxxxx is the list of addresses shown in a core dump.

Example

Core dump:

Guru Meditation Error: Core  0 panic'ed (LoadStoreAlignment). Exception was unhandled.
Core 0 register dump:

	#
	# Automatically generated file; DO NOT EDIT.
	# OpenWrt Configuration
	#
	CONFIG_MODULES=y
	CONFIG_HAVE_DOT_CONFIG=y
	# CONFIG_TARGET_sunxi is not set
	# CONFIG_TARGET_apm821xx is not set
	# CONFIG_TARGET_ath25 is not set
	# CONFIG_TARGET_ath79 is not set

	/**
	* Resource used:
	* Flash, CRC
	*/

	/**
	* A utility which reliably stores config data on the built-in flash of the MCU.
	* Data integrity is guaranteed by CRC32. If a power loss happens during a flash
	* write operation, upon next start-up, the last valid configuration will be used.
	*/

	/*
	* Resource used:
	* CRC32 peripheral
	*/

	#include "crc.h"

	#include "stm32f0xx_ll_bus.h"

	void crc32_init(void) {

	Windows Registry Editor Version 5.00

	[HKEY_CLASSES_ROOT\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\System]
	"Icon"="imageres.dll,143"

	[HKEY_CLASSES_ROOT\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\System\command]
	@="explorer /same,shell:::{BB06C0E4-D293-4f75-8A90-CB05B6477EEE}"

	[HKEY_CLASSES_ROOT\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\Manage]
	"Icon"="imageres.dll,313"

	#!/data/data/com.termux/files/usr/bin/bash
	## --- README ---
	## Download and run this script and wait....
	## The key is to have qemu-i386-static in /data/data/com.termux/files/usr/bin/
	## Reference: https://github.com/AllPlatform/Termux-UbuntuX86_64/blob/master/Ubuntu-i386.sh
	pkg install proot -y
	folder=debian-fs
	if [ -d "$folder" ]; then
	first=1
	echo "skipping downloading"