diff options
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_legacy.h')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_legacy.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/tools/testing/selftests/bpf/bpf_legacy.h b/tools/testing/selftests/bpf/bpf_legacy.h index 845209581440..bc4555a003a7 100644 --- a/tools/testing/selftests/bpf/bpf_legacy.h +++ b/tools/testing/selftests/bpf/bpf_legacy.h @@ -2,15 +2,22 @@ #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"); +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 |