1{
  2	"BPF_ATOMIC OR without fetch",
  3	.insns = {
  4		/* val = 0x110; */
  5		BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0x110),
  6		/* atomic_or(&val, 0x011); */
  7		BPF_MOV64_IMM(BPF_REG_1, 0x011),
  8		BPF_ATOMIC_OP(BPF_DW, BPF_OR, BPF_REG_10, BPF_REG_1, -8),
  9		/* if (val != 0x111) exit(2); */
 10		BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
 11		BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0x111, 2),
 12		BPF_MOV64_IMM(BPF_REG_0, 2),
 13		BPF_EXIT_INSN(),
 14		/* r1 should not be clobbered, no BPF_FETCH flag */
 15		BPF_MOV64_IMM(BPF_REG_0, 0),
 16		BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x011, 1),
 17		BPF_MOV64_IMM(BPF_REG_0, 1),
 18		BPF_EXIT_INSN(),
 19	},
 20	.result = ACCEPT,
 21},
 22{
 23	"BPF_ATOMIC OR with fetch",
 24	.insns = {
 25		BPF_MOV64_IMM(BPF_REG_0, 123),
 26		/* val = 0x110; */
 27		BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0x110),
 28		/* old = atomic_fetch_or(&val, 0x011); */
 29		BPF_MOV64_IMM(BPF_REG_1, 0x011),
 30		BPF_ATOMIC_OP(BPF_DW, BPF_OR | BPF_FETCH, BPF_REG_10, BPF_REG_1, -8),
 31		/* if (old != 0x110) exit(3); */
 32		BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x110, 2),
 33		BPF_MOV64_IMM(BPF_REG_0, 3),
 34		BPF_EXIT_INSN(),
 35		/* if (val != 0x111) exit(2); */
 36		BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -8),
 37		BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x111, 2),
 38		BPF_MOV64_IMM(BPF_REG_1, 2),
 39		BPF_EXIT_INSN(),
 40		/* Check R0 wasn't clobbered (for fear of x86 JIT bug) */
 41		BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 123, 2),
 42		BPF_MOV64_IMM(BPF_REG_0, 1),
 43		BPF_EXIT_INSN(),
 44		/* exit(0); */
 45		BPF_MOV64_IMM(BPF_REG_0, 0),
 46		BPF_EXIT_INSN(),
 47	},
 48	.result = ACCEPT,
 49},
 50{
 51	"BPF_ATOMIC OR with fetch 32bit",
 52	.insns = {
 53		/* r0 = (s64) -1 */
 54		BPF_MOV64_IMM(BPF_REG_0, 0),
 55		BPF_ALU64_IMM(BPF_SUB, BPF_REG_0, 1),
 56		/* val = 0x110; */
 57		BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0x110),
 58		/* old = atomic_fetch_or(&val, 0x011); */
 59		BPF_MOV32_IMM(BPF_REG_1, 0x011),
 60		BPF_ATOMIC_OP(BPF_W, BPF_OR | BPF_FETCH, BPF_REG_10, BPF_REG_1, -4),
 61		/* if (old != 0x110) exit(3); */
 62		BPF_JMP32_IMM(BPF_JEQ, BPF_REG_1, 0x110, 2),
 63		BPF_MOV32_IMM(BPF_REG_0, 3),
 64		BPF_EXIT_INSN(),
 65		/* if (val != 0x111) exit(2); */
 66		BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_10, -4),
 67		BPF_JMP32_IMM(BPF_JEQ, BPF_REG_1, 0x111, 2),
 68		BPF_MOV32_IMM(BPF_REG_1, 2),
 69		BPF_EXIT_INSN(),
 70		/* Check R0 wasn't clobbered (for fear of x86 JIT bug)
 71		 * It should be -1 so add 1 to get exit code.
 72		 */
 73		BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
 74		BPF_EXIT_INSN(),
 75	},
 76	.result = ACCEPT,
 77},
 78{
 79	"BPF_W atomic_fetch_or should zero top 32 bits",
 80	.insns = {
 81		/* r1 = U64_MAX; */
 82		BPF_MOV64_IMM(BPF_REG_1, 0),
 83		BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 1),
 84		/* u64 val = r1; */
 85		BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
 86		/* r1 = (u32)atomic_fetch_or((u32 *)&val, 2); */
 87		BPF_MOV32_IMM(BPF_REG_1, 2),
 88		BPF_ATOMIC_OP(BPF_W, BPF_OR | BPF_FETCH, BPF_REG_10, BPF_REG_1, -8),
 89		/* r2 = 0x00000000FFFFFFFF; */
 90		BPF_MOV64_IMM(BPF_REG_2, 1),
 91		BPF_ALU64_IMM(BPF_LSH, BPF_REG_2, 32),
 92		BPF_ALU64_IMM(BPF_SUB, BPF_REG_2, 1),
 93		/* if (r2 != r1) exit(1); */
 94		BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_1, 2),
 95		BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
 96		BPF_EXIT_INSN(),
 97		/* exit(0); */
 98		BPF_MOV32_IMM(BPF_REG_0, 0),
 99		BPF_EXIT_INSN(),
100	},
101	.result = ACCEPT,
102},