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[213.115.136.2]) by smtp.gmail.com with ESMTPSA id q9sm13937539ejf.70.2021.07.26.01.18.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jul 2021 01:18:35 -0700 (PDT) From: Johan Almbladh To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, Tony.Ambardar@gmail.com, netdev@vger.kernel.org, bpf@vger.kernel.org, Johan Almbladh Subject: [RFC PATCH 07/14] bpf/tests: add more ALU64 BPF_MUL tests Date: Mon, 26 Jul 2021 10:17:31 +0200 Message-Id: <20210726081738.1833704-8-johan.almbladh@anyfinetworks.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210726081738.1833704-1-johan.almbladh@anyfinetworks.com> References: <20210726081738.1833704-1-johan.almbladh@anyfinetworks.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org 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 --- lib/test_bpf.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/lib/test_bpf.c b/lib/test_bpf.c index b930fa35b9ef..eb61088a674f 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", -- 2.25.1