ARM, RISC-V контроллеры

bool
need_jump2app(void)
{
    // reset source is software reset and magic is in place
    bool ret = ((RCC->CSR & RCC_CSR_SFTRSTF) != 0 && reboot_marker == MAGIC);
    RCC->CSR |= RCC_CSR_RMVF; // clear reset source flag
    reboot_marker = 0;
    return ret;
}

void
Reset_Handler(void)
{
    if (need_jump2app())
    {
        static const uint16_t jump2app[] = {
            0xc806, // ldmia r0!, {r1, r2}
            0x468d, // mov sp, r1
            0x4710  // bx r2
        };
        ((void (*)(int))(1 + (int)jump2app))(0x08010000);
    }
    ...
}