{
        "atomic exchange smoketest - 64bit",
        .insns = {
                /* val = 3; */
                BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 3),
                /* old = atomic_xchg(&val, 4); */
                BPF_MOV64_IMM(BPF_REG_1, 4),
                BPF_ATOMIC_OP(BPF_DW, BPF_XCHG, BPF_REG_10, BPF_REG_1, -8),
                /* if (old != 3) exit(1); */
                BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 2),
                BPF_MOV64_IMM(BPF_REG_0, 1),
                BPF_EXIT_INSN(),
                /* if (val != 4) exit(2); */
                BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
                BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 4, 2),
                BPF_MOV64_IMM(BPF_REG_0, 2),
                BPF_EXIT_INSN(),
                /* exit(0); */
                BPF_MOV64_IMM(BPF_REG_0, 0),
                BPF_EXIT_INSN(),
        },
        .result = ACCEPT,
},
{
        "atomic exchange smoketest - 32bit",
        .insns = {
                /* val = 3; */
                BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 3),
                /* old = atomic_xchg(&val, 4); */
                BPF_MOV32_IMM(BPF_REG_1, 4),
                BPF_ATOMIC_OP(BPF_W, BPF_XCHG, BPF_REG_10, BPF_REG_1, -4),
                /* if (old != 3) exit(1); */
                BPF_JMP32_IMM(BPF_JEQ, BPF_REG_1, 3, 2),
                BPF_MOV32_IMM(BPF_REG_0, 1),
                BPF_EXIT_INSN(),
                /* if (val != 4) exit(2); */
                BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_10, -4),
                BPF_JMP32_IMM(BPF_JEQ, BPF_REG_0, 4, 2),
                BPF_MOV32_IMM(BPF_REG_0, 2),
                BPF_EXIT_INSN(),
                /* exit(0); */
                BPF_MOV32_IMM(BPF_REG_0, 0),
                BPF_EXIT_INSN(),
        },
        .result = ACCEPT,
},