debug (trace) Espruino core run under gdb-multiarch (arm-none-eabi-gdb)

Good day

I built espruino_2v24_stm32f4discovery.elf which this command line:

~/Espruino > BOARD=STM32F4DISCOVERY DEBUG=1 make

my .gdbinit:

## on load
b Reset_Handler
b SystemInit
b main
monitor reset halt

When I try to load .elf file into the gdb I got some strange address binding for source code lines:
0x3930 (without startup_stm32f4xx.s link)
0x58324
0x35076

It looks like address bindings to Flash ROM are totally incorrect.

At the same time, when I build my own empty startup code (generated by latest CubeMX), there are no any problems with addresses or source code.

Next, another problem is I always got system stopped at 0x800076c address that looks like start of EXTI0_IRQHandler

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