There are some declarations in my main.c:
/*-------------------------------------------------*/
#define  Fhclk   24e6    // mcu clock in Hz
#define  ms      (Fhclk/1e3)  // cycles for ms
.
.

void Delay(unsigned int Cycles){
  unsigned int DelayReg;
  DelayReg = (unsigned int)(Cycles/ms);// point of error (see below)!!!
.
.

}
/*-------------------------------------------------*/
When debuging with J-Link, at the moment of calculation (Cycles/ms) 
debug session 'suspended' with the erorr message:
/*-------------------------------------------------*/
Can't find a source file at 
"../../../../../gcc-4.7.2/libgcc/config/arm/ieee754-df.S"
Locate the file or edit the source lookup path to include its location.
/*-------------------------------------------------*/
I cannot find this path and file in Yagarto toolchain install folder.
Please, help me with configuration of compiler settings and maybe match 
more...