// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/direct_stack_access_wraparound.c */

#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

SEC("socket")
__description("direct stack access with 32-bit wraparound. test1")
__failure __msg("fp pointer and 2147483647")
__failure_unpriv
__naked void with_32_bit_wraparound_test1(void)
{
        asm volatile ("                                 \
        r1 = r10;                                       \
        r1 += 0x7fffffff;                               \
        r1 += 0x7fffffff;                               \
        w0 = 0;                                         \
        *(u8*)(r1 + 0) = r0;                            \
        exit;                                           \
"       ::: __clobber_all);
}

SEC("socket")
__description("direct stack access with 32-bit wraparound. test2")
__failure __msg("fp pointer and 1073741823")
__failure_unpriv
__naked void with_32_bit_wraparound_test2(void)
{
        asm volatile ("                                 \
        r1 = r10;                                       \
        r1 += 0x3fffffff;                               \
        r1 += 0x3fffffff;                               \
        w0 = 0;                                         \
        *(u8*)(r1 + 0) = r0;                            \
        exit;                                           \
"       ::: __clobber_all);
}

SEC("socket")
__description("direct stack access with 32-bit wraparound. test3")
__failure __msg("fp pointer offset 1073741822")
__msg_unpriv("R1 stack pointer arithmetic goes out of range")
__naked void with_32_bit_wraparound_test3(void)
{
        asm volatile ("                                 \
        r1 = r10;                                       \
        r1 += 0x1fffffff;                               \
        r1 += 0x1fffffff;                               \
        w0 = 0;                                         \
        *(u8*)(r1 + 0) = r0;                            \
        exit;                                           \
"       ::: __clobber_all);
}

char _license[] SEC("license") = "GPL";