31ddb15694
Add a new script operator, PROVIDE, to define a symbol only if it is needed. * ldgram.y (PROVIDE): New token. (assignment): Accept PROVIDE. * ldlex.l (PROVIDE): New token. * ldexp.h (node_type): Add etree_provide to node_class enum. (exp_provide): Declare. * ldexp.c (exp_fold_tree): Handle etree_provide. (exp_provide): New function. (exp_print_tree): Handle etree_provide. * ld.texinfo: Document PROVIDE.
The files in this directory are linker script templates. genscripts.sh sets some shell variables, then sources EMULATION.sc, to generate EMULATION.{x,xr,xu,xn,xbn} -- the script files for default, -r, -Ur, -n, -N.