diff options
Diffstat (limited to 'lib/test_bpf.c')
| -rw-r--r-- | lib/test_bpf.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 0362da0b66c3..3a7730ca81be 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -434,6 +434,41 @@ loop: return 0; } +static int __bpf_fill_stxdw(struct bpf_test *self, int size) +{ + unsigned int len = BPF_MAXINSNS; + struct bpf_insn *insn; + int i; + + insn = kmalloc_array(len, sizeof(*insn), GFP_KERNEL); + if (!insn) + return -ENOMEM; + + insn[0] = BPF_ALU32_IMM(BPF_MOV, R0, 1); + insn[1] = BPF_ST_MEM(size, R10, -40, 42); + + for (i = 2; i < len - 2; i++) + insn[i] = BPF_STX_XADD(size, R10, R0, -40); + + insn[len - 2] = BPF_LDX_MEM(size, R0, R10, -40); + insn[len - 1] = BPF_EXIT_INSN(); + + self->u.ptr.insns = insn; + self->u.ptr.len = len; + + return 0; +} + +static int bpf_fill_stxw(struct bpf_test *self) +{ + return __bpf_fill_stxdw(self, BPF_W); +} + +static int bpf_fill_stxdw(struct bpf_test *self) +{ + return __bpf_fill_stxdw(self, BPF_DW); +} + static struct bpf_test tests[] = { { "TAX", @@ -4303,6 +4338,41 @@ static struct bpf_test tests[] = { { { 0, 0x22 } }, }, { + "STX_XADD_W: Test side-effects, r10: 0x12 + 0x10 = 0x22", + .u.insns_int = { + BPF_ALU64_REG(BPF_MOV, R1, R10), + BPF_ALU32_IMM(BPF_MOV, R0, 0x12), + BPF_ST_MEM(BPF_W, R10, -40, 0x10), + BPF_STX_XADD(BPF_W, R10, R0, -40), + BPF_ALU64_REG(BPF_MOV, R0, R10), + BPF_ALU64_REG(BPF_SUB, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0 } }, + }, + { + "STX_XADD_W: Test side-effects, r0: 0x12 + 0x10 = 0x22", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12), + BPF_ST_MEM(BPF_W, R10, -40, 0x10), + BPF_STX_XADD(BPF_W, R10, R0, -40), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x12 } }, + }, + { + "STX_XADD_W: X + 1 + 1 + 1 + ...", + { }, + INTERNAL, + { }, + { { 0, 4134 } }, + .fill_helper = bpf_fill_stxw, + }, + { "STX_XADD_DW: Test: 0x12 + 0x10 = 0x22", .u.insns_int = { BPF_ALU32_IMM(BPF_MOV, R0, 0x12), @@ -4315,6 +4385,41 @@ static struct bpf_test tests[] = { { }, { { 0, 0x22 } }, }, + { + "STX_XADD_DW: Test side-effects, r10: 0x12 + 0x10 = 0x22", + .u.insns_int = { + BPF_ALU64_REG(BPF_MOV, R1, R10), + BPF_ALU32_IMM(BPF_MOV, R0, 0x12), + BPF_ST_MEM(BPF_DW, R10, -40, 0x10), + BPF_STX_XADD(BPF_DW, R10, R0, -40), + BPF_ALU64_REG(BPF_MOV, R0, R10), + BPF_ALU64_REG(BPF_SUB, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0 } }, + }, + { + "STX_XADD_DW: Test side-effects, r0: 0x12 + 0x10 = 0x22", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12), + BPF_ST_MEM(BPF_DW, R10, -40, 0x10), + BPF_STX_XADD(BPF_DW, R10, R0, -40), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x12 } }, + }, + { + "STX_XADD_DW: X + 1 + 1 + 1 + ...", + { }, + INTERNAL, + { }, + { { 0, 4134 } }, + .fill_helper = bpf_fill_stxdw, + }, /* BPF_JMP | BPF_EXIT */ { "JMP_EXIT", |