MIPS_R_A2
[BPF_REG_2] = {MIPS_R_A3, MIPS_R_A2},
BIT(MIPS_R_A2) | \
emit(ctx, addiu, MIPS_R_A2, MIPS_R_T9, off);
emit(ctx, move, MIPS_R_A2, MIPS_R_T8);
[BPF_REG_3] = MIPS_R_A2,