CCS/TMS320C6727: function expf(...) creates illegal code in load6x.exe

Tool/software: Code Composer Studio

Hi,

I work on a DSP TMS320C6727 project. I want to simulate the DSP  behavior with the load6x.exe program. 

I'm able to launch my program, 'puts' and 'printf" functions work as expected but I can't make the 'expf' function to work.

Everytime the program reaches the line with this function, it outputs the following message :

>>Illegal opcode (008d4e61) at pc = 0x1001e788

What am I doing wrong and how can I make it to work ?

Test code is as simple as that :

#include    <stdio.h>
#include    <stdlib.h>
#include    <math.h>

void main (unsigned argc, char *argv[])
{
    float test;

    puts ("************************************************************************************\n");
    puts ("Hello world ! \n");
    test = expf(0.0);
    puts ("************************************************************************************\n");
    exit(0);
}