diff options
| author | Yonghong Song <yonghong.song@linux.dev> | 2023-07-27 18:13:29 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-27 18:54:17 -0700 |
| commit | 613dad498072f20d9bfd996422f0fd8e9a2f6c0d (patch) | |
| tree | 90d46d8e65f56b65beab10662b56913fed2d2116 /tools/testing/selftests/bpf/progs/verifier_gotol.c | |
| parent | de1c26809ec37b632ad7bcec3bba8b849eb44d43 (diff) | |
selftests/bpf: Add unit tests for new gotol insn
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>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/verifier_gotol.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/verifier_gotol.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_gotol.c b/tools/testing/selftests/bpf/progs/verifier_gotol.c new file mode 100644 index 000000000000..ce48f7757db2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/verifier_gotol.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include "bpf_misc.h" + +#if defined(__TARGET_ARCH_x86) && __clang_major__ >= 18 + +SEC("socket") +__description("gotol, small_imm") +__success __success_unpriv __retval(1) +__naked void gotol_small_imm(void) +{ + asm volatile (" \ + call %[bpf_ktime_get_ns]; \ + if r0 == 0 goto l0_%=; \ + gotol l1_%=; \ +l2_%=: \ + gotol l3_%=; \ +l1_%=: \ + r0 = 1; \ + gotol l2_%=; \ +l0_%=: \ + r0 = 2; \ +l3_%=: \ + exit; \ +" : + : __imm(bpf_ktime_get_ns) + : __clobber_all); +} + +#else + +SEC("socket") +__description("cpuv4 is not supported by compiler or jit, use a dummy test") +__success +int dummy_test(void) +{ + return 0; +} + +#endif + +char _license[] SEC("license") = "GPL"; |