*:memcpy*.o(.text*) *:lib_a-memcpy*.o(.text*) *:libc_rom.o(.text*) *:libc_rom_mem.o(.text*) what is the function of after memcpy?

The entries that you listed are linker script commands that specify which sections of object files should be included in the final output executable.

In this case, the commands are specifying that any sections in object files with names matching `memcpy.o`, `lib_a-memcpy.o`, `libc_rom.o`, and `libc_rom_mem.o` that have names starting with `.text` should be included in the `.text` section of the final executable.

This means that any functions or code in those sections will be included in the final executable and can be executed by the program. `memcpy()` is a standard C library function that is used to copy a block of memory from one location to another, and it is likely that the object files with names matching `memcpy.o` or `lib_a-memcpy.o` contain the implementation of this function. The other object files may contain other C library functions or code that is required by the program.