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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: James Hilliard <james.hilliard1@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221201190939.3230513-1-james.hilliard1@gmail.com
23 lines
895 B
C
23 lines
895 B
C
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
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#ifndef __BPF_LEGACY__
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#define __BPF_LEGACY__
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#if __GNUC__ && !__clang__
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/* Functions to emit BPF_LD_ABS and BPF_LD_IND instructions. We
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* provide the "standard" names as synonyms of the corresponding GCC
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* builtins. Note how the SKB argument is ignored.
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*/
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#define load_byte(skb, off) __builtin_bpf_load_byte(off)
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#define load_half(skb, off) __builtin_bpf_load_half(off)
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#define load_word(skb, off) __builtin_bpf_load_word(off)
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#else
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/* llvm builtin functions that eBPF C program may use to
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* emit BPF_LD_ABS and BPF_LD_IND instructions
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*/
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unsigned long long load_byte(void *skb, unsigned long long off) asm("llvm.bpf.load.byte");
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unsigned long long load_half(void *skb, unsigned long long off) asm("llvm.bpf.load.half");
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unsigned long long load_word(void *skb, unsigned long long off) asm("llvm.bpf.load.word");
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#endif
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#endif
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