LD32
#define LDPTR LD32
#define LD32I (LD32 | IMMED)
opcode = LD32;
emit(LD32 | RS1(tmp) | RS2(G0) | RD(tmp2), ctx);
#define LD32I (LD32 | IMMED)
emit(LD32 | IMMED | RS1(bpf_array) | S13(off) | RD(tmp), ctx);
emit(LD32 | IMMED | RS1(SP) | S13(off) | RD(tmp), ctx);