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{
"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,
},
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