1 { 2 "atomic exchange smoketest - 64bit", 3 .insns = { 4 /* val = 3; */ 5 BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 3), 6 /* old = atomic_xchg(&val, 4); */ 7 BPF_MOV64_IMM(BPF_REG_1, 4), 8 BPF_ATOMIC_OP(BPF_DW, BPF_XCHG, BPF_REG_10, BPF_REG_1, -8), 9 /* if (old != 3) exit(1); */ 10 BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 2), 11 BPF_MOV64_IMM(BPF_REG_0, 1), 12 BPF_EXIT_INSN(), 13 /* if (val != 4) exit(2); */ 14 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8), 15 BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 4, 2), 16 BPF_MOV64_IMM(BPF_REG_0, 2), 17 BPF_EXIT_INSN(), 18 /* exit(0); */ 19 BPF_MOV64_IMM(BPF_REG_0, 0), 20 BPF_EXIT_INSN(), 21 }, 22 .result = ACCEPT, 23 }, 24 { 25 "atomic exchange smoketest - 32bit", 26 .insns = { 27 /* val = 3; */ 28 BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 3), 29 /* old = atomic_xchg(&val, 4); */ 30 BPF_MOV32_IMM(BPF_REG_1, 4), 31 BPF_ATOMIC_OP(BPF_W, BPF_XCHG, BPF_REG_10, BPF_REG_1, -4), 32 /* if (old != 3) exit(1); */ 33 BPF_JMP32_IMM(BPF_JEQ, BPF_REG_1, 3, 2), 34 BPF_MOV32_IMM(BPF_REG_0, 1), 35 BPF_EXIT_INSN(), 36 /* if (val != 4) exit(2); */ 37 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_10, -4), 38 BPF_JMP32_IMM(BPF_JEQ, BPF_REG_0, 4, 2), 39 BPF_MOV32_IMM(BPF_REG_0, 2), 40 BPF_EXIT_INSN(), 41 /* exit(0); */ 42 BPF_MOV32_IMM(BPF_REG_0, 0), 43 BPF_EXIT_INSN(), 44 }, 45 .result = ACCEPT, 46 }, 47