Compiler/LAUNCHXL-F28069M: DELAY_US() leads to illegal ISR while running from flash

Tool/software: TI C/C++ Compiler

Hi guys,

My program begin to enter at illegal ISR as soon I begin to run the program from flash. So I tried to do many steps to fix the problem but don`t solve yet,  I tried to follow the instructions here(

LAUNCHXL-F28377S: DELAY_US() leads to illegal ISR while running from flash - C2000 microcontrollers forum...

e2e.ti.com

Part Number: LAUNCHXL-F28377S hello, I have developed an application in F28377s launchpad which includes data acquisition using an ADC. The program runs fine

1) I insert the code memcpy at main.c, at the begin, before any other execution

void main(void)
{
//código para permitir que o delay_us funcione sem problemas quando não roda da ram
#ifdef _FLASH
    memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);
#endif
...

2)I insert the predefined symbol _FLASH at "Predefined Symbols" (Properties--->CCS Build--->C2000 Compiler--->Advanced Options--->Predefined Symbols)

3) I insert #include <stdio.h> at main.c

But as soon I try to compile I receive this error message from compilation

>> Compilation failure
makefile:149: recipe for target 'Example_2806xSpi_FFDLB_int.out' failed

 undefined         first referenced                
  symbol               in file                     
 ---------         ----------------                
 _RamfuncsLoadSize ./Example_2806xSpi_FFDLB_int.obj

Any ideas to solve this issue?