1 // SPDX-License-Identifier: GPL-2.0
2 /* Converted from tools/testing/selftests/bpf/verifier/unpriv.c */
3 
4 #include "vmlinux.h"
5 #include <bpf/bpf_helpers.h>
6 #include "bpf_misc.h"
7 
8 SEC("perf_event")
9 __description("unpriv: spill/fill of different pointers ldx")
10 __failure __msg("same insn cannot be used with different pointers")
fill_of_different_pointers_ldx(void)11 __naked void fill_of_different_pointers_ldx(void)
12 {
13 	asm volatile ("					\
14 	r6 = r10;					\
15 	r6 += -8;					\
16 	if r1 == 0 goto l0_%=;				\
17 	r2 = r10;					\
18 	r2 += %[__imm_0];				\
19 	*(u64*)(r6 + 0) = r2;				\
20 l0_%=:	if r1 != 0 goto l1_%=;				\
21 	*(u64*)(r6 + 0) = r1;				\
22 l1_%=:	r1 = *(u64*)(r6 + 0);				\
23 	r1 = *(u64*)(r1 + %[sample_period]);		\
24 	r0 = 0;						\
25 	exit;						\
26 "	:
27 	: __imm_const(__imm_0,
28 		      -(__s32) offsetof(struct bpf_perf_event_data, sample_period) - 8),
29 	  __imm_const(sample_period,
30 		      offsetof(struct bpf_perf_event_data, sample_period))
31 	: __clobber_all);
32 }
33 
34 char _license[] SEC("license") = "GPL";
35