/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ #ifndef __BPF_LEGACY__ #define __BPF_LEGACY__ #if __GNUC__ && !__clang__ /* Functions to emit BPF_LD_ABS and BPF_LD_IND instructions. We * provide the "standard" names as synonyms of the corresponding GCC * builtins. Note how the SKB argument is ignored. */ #define load_byte(skb, off) __builtin_bpf_load_byte(off) #define load_half(skb, off) __builtin_bpf_load_half(off) #define load_word(skb, off) __builtin_bpf_load_word(off) #else /* llvm builtin functions that eBPF C program may use to * emit BPF_LD_ABS and BPF_LD_IND instructions */ unsigned long long load_byte(void *skb, unsigned long long off) asm("llvm.bpf.load.byte"); unsigned long long load_half(void *skb, unsigned long long off) asm("llvm.bpf.load.half"); unsigned long long load_word(void *skb, unsigned long long off) asm("llvm.bpf.load.word"); #endif #endif