Commit f16a7aa5 authored by James Hilliard's avatar James Hilliard Committed by Andrii Nakryiko

selftests/bpf: Add GCC compatible builtins to bpf_legacy.h

The bpf_legacy.h header uses llvm specific load functions, add
GCC compatible variants as well to fix tests using these functions
under GCC.
Signed-off-by: default avatarJames Hilliard <james.hilliard1@gmail.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221201190939.3230513-1-james.hilliard1@gmail.com
parent bc067cac
......@@ -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
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment