I am asking this just out of curiosity.
I am using Microchip C30 compiler to develop EEPROM driver code for PIC24F. During this I used C30 builtin functions such as __builtin_tblwtl(), __builtin_tbloffset etc. How can I find the location of builtin functions? From Wiki I found this:
"Some compilers (for example, GCC[7]) provide built-in versions of many of the functions in the C standard library; that is, the implementations of the functions are written into the compiled object file, and the program calls the built-in versions instead of the functions in the C library shared object file"
Does this mean that these functions are written inside the object files of compiler? So does that mean we cannot see it as a code? I have searched the entire C30 directory and didn't find these functions.
user defined functions only stored in objects file of the compiler and above mention functions __builtin_tblwtl(), __builtin_tbloffset etc are previously written in library of Microchip C30 compiler.So you only get link to that library. for example in linux gcc is compiler while glibc are the runtime libraries.