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613dad4980
Add unit tests for gotol insn. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230728011329.3721881-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
45 lines
788 B
C
45 lines
788 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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#if defined(__TARGET_ARCH_x86) && __clang_major__ >= 18
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SEC("socket")
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__description("gotol, small_imm")
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__success __success_unpriv __retval(1)
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__naked void gotol_small_imm(void)
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{
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asm volatile (" \
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call %[bpf_ktime_get_ns]; \
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if r0 == 0 goto l0_%=; \
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gotol l1_%=; \
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l2_%=: \
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gotol l3_%=; \
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l1_%=: \
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r0 = 1; \
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gotol l2_%=; \
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l0_%=: \
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r0 = 2; \
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l3_%=: \
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exit; \
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" :
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: __imm(bpf_ktime_get_ns)
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: __clobber_all);
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}
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#else
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SEC("socket")
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__description("cpuv4 is not supported by compiler or jit, use a dummy test")
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__success
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int dummy_test(void)
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{
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return 0;
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}
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#endif
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char _license[] SEC("license") = "GPL";
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