MIPS_R_FP
[BPF_REG_FP] = {MIPS_R_FP, MIPS_R_ZERO},
[BPF_REG_FP] = {MIPS_R_ZERO, MIPS_R_FP},
BIT(MIPS_R_FP) | \
[BPF_REG_FP] = MIPS_R_FP,