| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | |
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| 3 | #include <linux/bpf.h> |
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| 4 | #include <bpf/bpf_helpers.h> |
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| 5 | #include "bpf_misc.h" |
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| 6 | |
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| 7 | #if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \ |
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| 8 | (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \ |
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| 9 | defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \ |
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| 10 | defined(__TARGET_ARCH_loongarch)) && \ |
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| 11 | __clang_major__ >= 18 |
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| 12 | |
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| 13 | SEC("socket" ) |
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| 14 | __description("gotol, small_imm" ) |
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| 15 | __success __success_unpriv __retval(1) |
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| 16 | __naked void gotol_small_imm(void) |
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| 17 | { |
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| 18 | asm volatile (" \ |
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| 19 | call %[bpf_ktime_get_ns]; \ |
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| 20 | if r0 == 0 goto l0_%=; \ |
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| 21 | gotol l1_%=; \ |
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| 22 | l2_%=: \ |
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| 23 | gotol l3_%=; \ |
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| 24 | l1_%=: \ |
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| 25 | r0 = 1; \ |
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| 26 | gotol l2_%=; \ |
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| 27 | l0_%=: \ |
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| 28 | r0 = 2; \ |
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| 29 | l3_%=: \ |
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| 30 | exit; \ |
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| 31 | " : |
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| 32 | : __imm(bpf_ktime_get_ns) |
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| 33 | : __clobber_all); |
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| 34 | } |
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| 35 | |
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| 36 | SEC("socket" ) |
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| 37 | __description("gotol, large_imm" ) |
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| 38 | __success __failure_unpriv __retval(40000) |
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| 39 | __naked void gotol_large_imm(void) |
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| 40 | { |
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| 41 | asm volatile (" \ |
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| 42 | gotol 1f; \ |
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| 43 | 0: \ |
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| 44 | r0 = 0; \ |
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| 45 | .rept 40000; \ |
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| 46 | r0 += 1; \ |
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| 47 | .endr; \ |
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| 48 | exit; \ |
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| 49 | 1: gotol 0b; \ |
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| 50 | " : |
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| 51 | : |
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| 52 | : __clobber_all); |
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| 53 | } |
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| 54 | |
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| 55 | #else |
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| 56 | |
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| 57 | SEC("socket" ) |
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| 58 | __description("cpuv4 is not supported by compiler or jit, use a dummy test" ) |
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| 59 | __success |
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| 60 | int dummy_test(void) |
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| 61 | { |
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| 62 | return 0; |
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| 63 | } |
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| 64 | |
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| 65 | #endif |
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| 66 | |
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| 67 | char _license[] SEC("license" ) = "GPL" ; |
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| 68 | |
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