ref: 0298b8c6607844bc77deb5d21da651a4954af076
dir: /as/ins.c/
static char sccsid[] = "@(#) ./as/ins.c"; #include "../inc/scc.h" #include "as.h" char * tobytes(TUINT v, int nbytes, int inc) { static char buf[sizeof(TUINT)]; int idx; idx = (inc < 0) ? nbytes-1 : 0; while (nbytes--) { buf[idx] = v; idx += inc; v >>= 8; } if (v) error("overflow in immediate value"); return buf; } void noargs(Op *op, Node **args) { emit(cursec, op->bytes, op->size); } void def(Node **args, int siz) { Node *np; for ( ; np = *args; ++args) { Symbol *sym = np->sym; if (sym->flags & FUNDEF) reloc(sym, 0, siz, siz * 8, 0); emit(cursec, tobytes(sym->value, siz, endian), siz); } } void defb(Op *op, Node **args) { def(args, 1); } void defw(Op *op, Node **args) { def(args, 2); } void defd(Op *op, Node **args) { def(args, 4); } void defq(Op *op, Node **args) { def(args, 8); } void equ(Op *op, Node **args) { if (!linesym) error("label definition lacks a label"); else linesym->value = (*args)->sym->value; }