{ "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, },