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| author | Johan Almbladh <johan.almbladh@anyfinetworks.com> | 2021-08-09 11:18:22 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-08-10 11:33:12 +0200 |
| commit | faa576253d5fe757f0c573ef7e183b3416c58dae (patch) | |
| tree | ea3588723a780f4726412c584152a1d352da882c /lib/test_bpf.c | |
| parent | 3b9890ef80f4285d32f2274d20db108e064e5e9e (diff) | |
| download | lwn-faa576253d5fe757f0c573ef7e183b3416c58dae.tar.gz lwn-faa576253d5fe757f0c573ef7e183b3416c58dae.zip | |
bpf, tests: Add more ALU64 BPF_MUL tests
This patch adds BPF_MUL tests for 64x32 and 64x64 multiply. Mainly
testing 32-bit JITs that implement ALU64 operations with two 32-bit
CPU registers per operand.
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210809091829.810076-8-johan.almbladh@anyfinetworks.com
Diffstat (limited to 'lib/test_bpf.c')
| -rw-r--r-- | lib/test_bpf.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index b95bed03ab1b..072f9c51bd9b 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -3051,6 +3051,31 @@ static struct bpf_test tests[] = { { }, { { 0, 2147483647 } }, }, + { + "ALU64_MUL_X: 64x64 multiply, low word", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0fedcba987654321LL), + BPF_LD_IMM64(R1, 0x123456789abcdef0LL), + BPF_ALU64_REG(BPF_MUL, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xe5618cf0 } } + }, + { + "ALU64_MUL_X: 64x64 multiply, high word", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0fedcba987654321LL), + BPF_LD_IMM64(R1, 0x123456789abcdef0LL), + BPF_ALU64_REG(BPF_MUL, R0, R1), + BPF_ALU64_IMM(BPF_RSH, R0, 32), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x2236d88f } } + }, /* BPF_ALU | BPF_MUL | BPF_K */ { "ALU_MUL_K: 2 * 3 = 6", @@ -3161,6 +3186,29 @@ static struct bpf_test tests[] = { { }, { { 0, 0x1 } }, }, + { + "ALU64_MUL_K: 64x32 multiply, low word", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_ALU64_IMM(BPF_MUL, R0, 0x12345678), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xe242d208 } } + }, + { + "ALU64_MUL_K: 64x32 multiply, high word", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_ALU64_IMM(BPF_MUL, R0, 0x12345678), + BPF_ALU64_IMM(BPF_RSH, R0, 32), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xc28f5c28 } } + }, /* BPF_ALU | BPF_DIV | BPF_X */ { "ALU_DIV_X: 6 / 2 = 3", |