[bpf-next,v2,07/14] bpf/tests: Add more ALU64 BPF_MUL tests

Message ID	20210809091829.810076-8-johan.almbladh@anyfinetworks.com
State	New
Headers	show Return-Path: <netdev-owner@kernel.org> From: Johan Almbladh <johan.almbladh@anyfinetworks.com> 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 <johan.almbladh@anyfinetworks.com> Subject: [PATCH bpf-next v2 07/14] bpf/tests: Add more ALU64 BPF_MUL tests Date: Mon, 9 Aug 2021 11:18:22 +0200 Message-Id: <20210809091829.810076-8-johan.almbladh@anyfinetworks.com> In-Reply-To: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com> References: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	bpf/tests: Extend the eBPF test suite \| expand [bpf-next,v2,00/14] bpf/tests: Extend the eBPF test suite [bpf-next,v2,01/14] bpf/tests: Add BPF_JMP32 test cases [bpf-next,v2,02/14] bpf/tests: Add BPF_MOV tests for zero and sign extension [bpf-next,v2,03/14] bpf/tests: Fix typos in test case descriptions [bpf-next,v2,04/14] bpf/tests: Add more tests of ALU32 and ALU64 bitwise operations [bpf-next,v2,05/14] bpf/tests: Add more ALU32 tests for BPF_LSH/RSH/ARSH [bpf-next,v2,06/14] bpf/tests: Add more BPF_LSH/RSH/ARSH tests for ALU64 [bpf-next,v2,07/14] bpf/tests: Add more ALU64 BPF_MUL tests [bpf-next,v2,08/14] bpf/tests: Add tests for ALU operations implemented with function calls [bpf-next,v2,09/14] bpf/tests: Add word-order tests for load/store of double words [bpf-next,v2,10/14] bpf/tests: Add branch conversion JIT test [bpf-next,v2,11/14] bpf/tests: Add test for 32-bit context pointer argument passing [bpf-next,v2,12/14] bpf/tests: Add tests for atomic operations [bpf-next,v2,13/14] bpf/tests: Add tests for BPF_CMPXCHG [bpf-next,v2,14/14] bpf/tests: Add tail call test suite

Message ID

20210809091829.810076-8-johan.almbladh@anyfinetworks.com

State

New

Headers

From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
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 <johan.almbladh@anyfinetworks.com>
Subject: [PATCH bpf-next v2 07/14] bpf/tests: Add more ALU64 BPF_MUL tests
Date: Mon,  9 Aug 2021 11:18:22 +0200
Message-Id: <20210809091829.810076-8-johan.almbladh@anyfinetworks.com>
In-Reply-To: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com>
References: <20210809091829.810076-1-johan.almbladh@anyfinetworks.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

bpf/tests: Extend the eBPF test suite | expand

Commit Message

Johan Almbladh Aug. 9, 2021, 9:18 a.m. UTC

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>
---
 lib/test_bpf.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

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",

[bpf-next,v2,07/14] bpf/tests: Add more ALU64 BPF_MUL tests

Commit Message

Patch