47 lines · c
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