[bpf-next,v5,14/17] selftests/bpf: Add unit tests for new sdiv/smod insns

Message ID	20230728011321.3720500-1-yonghong.song@linux.dev (mailing list archive)
State	Accepted
Commit	de1c26809ec37b632ad7bcec3bba8b849eb44d43
Delegated to:	BPF
Headers	show Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 24A9C7C for <bpf@vger.kernel.org>; Fri, 28 Jul 2023 01:16:29 +0000 (UTC) Received: from 66-220-155-178.mail-mxout.facebook.com (66-220-155-178.mail-mxout.facebook.com [66.220.155.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6ABA230EB for <bpf@vger.kernel.org>; Thu, 27 Jul 2023 18:16:26 -0700 (PDT) Received: by devbig309.ftw3.facebook.com (Postfix, from userid 128203) id A1A6723C74AE1; Thu, 27 Jul 2023 18:13:21 -0700 (PDT) From: Yonghong Song <yonghong.song@linux.dev> To: Alexei Starovoitov <ast@kernel.org>, Andrii Nakryiko <andrii@kernel.org>, bpf@vger.kernel.org, Daniel Borkmann <daniel@iogearbox.net>, Martin KaFai Lau <martin.lau@kernel.org> Cc: David Faust <david.faust@oracle.com>, Fangrui Song <maskray@google.com>, "Jose E . Marchesi" <jose.marchesi@oracle.com>, kernel-team@fb.com Subject: [PATCH bpf-next v5 14/17] selftests/bpf: Add unit tests for new sdiv/smod insns Date: Thu, 27 Jul 2023 18:13:21 -0700 Message-Id: <20230728011321.3720500-1-yonghong.song@linux.dev> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230728011143.3710005-1-yonghong.song@linux.dev> References: <20230728011143.3710005-1-yonghong.song@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: <bpf.vger.kernel.org> List-Subscribe: <mailto:bpf+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:bpf+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00,RDNS_DYNAMIC, SPF_HELO_PASS,SPF_SOFTFAIL,TVD_RCVD_IP,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: bpf@iogearbox.net
Series	bpf: Support new insns from cpu v4 \| expand [bpf-next,v5,00/17] bpf: Support new insns from cpu v4 [bpf-next,v5,01/17] bpf: Support new sign-extension load insns [bpf-next,v5,02/17] bpf: Support new sign-extension mov insns [bpf-next,v5,03/17] bpf: Handle sign-extenstin ctx member accesses [bpf-next,v5,04/17] bpf: Support new unconditional bswap instruction [bpf-next,v5,05/17] bpf: Support new signed div/mod instructions. [bpf-next,v5,06/17] bpf: Fix jit blinding with new sdiv/smov insns [bpf-next,v5,07/17] bpf: Support new 32bit offset jmp instruction [bpf-next,v5,09/17] selftests/bpf: Fix a test_verifier failure [bpf-next,v5,10/17] selftests/bpf: Add a cpuv4 test runner for cpu=v4 testing [bpf-next,v5,11/17] selftests/bpf: Add unit tests for new sign-extension load insns [bpf-next,v5,12/17] selftests/bpf: Add unit tests for new sign-extension mov insns [bpf-next,v5,13/17] selftests/bpf: Add unit tests for new bswap insns [bpf-next,v5,14/17] selftests/bpf: Add unit tests for new sdiv/smod insns [bpf-next,v5,15/17] selftests/bpf: Add unit tests for new gotol insn [bpf-next,v5,16/17] selftests/bpf: Test ldsx with more complex cases [bpf-next,v5,17/17] docs/bpf: Add documentation for new instructions

Context	Check	Description
bpf/vmtest-bpf-next-PR	success	PR summary
bpf/vmtest-bpf-next-VM_Test-1	success	Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-2	success	Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-3	success	Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-4	success	Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-5	success	Logs for build for x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-6	success	Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-7	success	Logs for test_maps on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-8	success	Logs for test_maps on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-9	success	Logs for test_maps on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-10	success	Logs for test_maps on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-11	success	Logs for test_progs on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-12	success	Logs for test_progs on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-13	success	Logs for test_progs on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-14	success	Logs for test_progs on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-15	success	Logs for test_progs_no_alu32 on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-16	fail	Logs for test_progs_no_alu32 on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-17	success	Logs for test_progs_no_alu32 on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-18	success	Logs for test_progs_no_alu32 on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-19	success	Logs for test_progs_no_alu32_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-20	success	Logs for test_progs_no_alu32_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-21	success	Logs for test_progs_no_alu32_parallel on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-22	success	Logs for test_progs_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-23	success	Logs for test_progs_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-24	success	Logs for test_progs_parallel on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-25	success	Logs for test_verifier on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-26	success	Logs for test_verifier on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-27	success	Logs for test_verifier on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-28	success	Logs for test_verifier on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-29	success	Logs for veristat

diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c index 885532540bc3..a591d7b673f1 100644 --- a/tools/testing/selftests/bpf/prog_tests/verifier.c +++ b/tools/testing/selftests/bpf/prog_tests/verifier.c @@ -54,6 +54,7 @@ #include "verifier_ringbuf.skel.h" #include "verifier_runtime_jit.skel.h" #include "verifier_scalar_ids.skel.h" +#include "verifier_sdiv.skel.h" #include "verifier_search_pruning.skel.h" #include "verifier_sock.skel.h" #include "verifier_spill_fill.skel.h" @@ -159,6 +160,7 @@ void test_verifier_regalloc(void) { RUN(verifier_regalloc); } void test_verifier_ringbuf(void) { RUN(verifier_ringbuf); } void test_verifier_runtime_jit(void) { RUN(verifier_runtime_jit); } void test_verifier_scalar_ids(void) { RUN(verifier_scalar_ids); } +void test_verifier_sdiv(void) { RUN(verifier_sdiv); } void test_verifier_search_pruning(void) { RUN(verifier_search_pruning); } void test_verifier_sock(void) { RUN(verifier_sock); } void test_verifier_spill_fill(void) { RUN(verifier_spill_fill); } diff --git a/tools/testing/selftests/bpf/progs/verifier_sdiv.c b/tools/testing/selftests/bpf/progs/verifier_sdiv.c new file mode 100644 index 000000000000..f61a9a1058c8 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/verifier_sdiv.c @@ -0,0 +1,781 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include "bpf_misc.h" + +#if defined(__TARGET_ARCH_x86) && __clang_major__ >= 18 + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 1") +__success __success_unpriv __retval(-20) +__naked void sdiv32_non_zero_imm_1(void) +{ + asm volatile (" \ + w0 = -41; \ + w0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 2") +__success __success_unpriv __retval(-20) +__naked void sdiv32_non_zero_imm_2(void) +{ + asm volatile (" \ + w0 = 41; \ + w0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 3") +__success __success_unpriv __retval(20) +__naked void sdiv32_non_zero_imm_3(void) +{ + asm volatile (" \ + w0 = -41; \ + w0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 4") +__success __success_unpriv __retval(-21) +__naked void sdiv32_non_zero_imm_4(void) +{ + asm volatile (" \ + w0 = -42; \ + w0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 5") +__success __success_unpriv __retval(-21) +__naked void sdiv32_non_zero_imm_5(void) +{ + asm volatile (" \ + w0 = 42; \ + w0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 6") +__success __success_unpriv __retval(21) +__naked void sdiv32_non_zero_imm_6(void) +{ + asm volatile (" \ + w0 = -42; \ + w0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 7") +__success __success_unpriv __retval(21) +__naked void sdiv32_non_zero_imm_7(void) +{ + asm volatile (" \ + w0 = 42; \ + w0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero imm divisor, check 8") +__success __success_unpriv __retval(20) +__naked void sdiv32_non_zero_imm_8(void) +{ + asm volatile (" \ + w0 = 41; \ + w0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 1") +__success __success_unpriv __retval(-20) +__naked void sdiv32_non_zero_reg_1(void) +{ + asm volatile (" \ + w0 = -41; \ + w1 = 2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 2") +__success __success_unpriv __retval(-20) +__naked void sdiv32_non_zero_reg_2(void) +{ + asm volatile (" \ + w0 = 41; \ + w1 = -2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 3") +__success __success_unpriv __retval(20) +__naked void sdiv32_non_zero_reg_3(void) +{ + asm volatile (" \ + w0 = -41; \ + w1 = -2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 4") +__success __success_unpriv __retval(-21) +__naked void sdiv32_non_zero_reg_4(void) +{ + asm volatile (" \ + w0 = -42; \ + w1 = 2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 5") +__success __success_unpriv __retval(-21) +__naked void sdiv32_non_zero_reg_5(void) +{ + asm volatile (" \ + w0 = 42; \ + w1 = -2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 6") +__success __success_unpriv __retval(21) +__naked void sdiv32_non_zero_reg_6(void) +{ + asm volatile (" \ + w0 = -42; \ + w1 = -2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 7") +__success __success_unpriv __retval(21) +__naked void sdiv32_non_zero_reg_7(void) +{ + asm volatile (" \ + w0 = 42; \ + w1 = 2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, non-zero reg divisor, check 8") +__success __success_unpriv __retval(20) +__naked void sdiv32_non_zero_reg_8(void) +{ + asm volatile (" \ + w0 = 41; \ + w1 = 2; \ + w0 s/= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 1") +__success __success_unpriv __retval(-20) +__naked void sdiv64_non_zero_imm_1(void) +{ + asm volatile (" \ + r0 = -41; \ + r0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 2") +__success __success_unpriv __retval(-20) +__naked void sdiv64_non_zero_imm_2(void) +{ + asm volatile (" \ + r0 = 41; \ + r0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 3") +__success __success_unpriv __retval(20) +__naked void sdiv64_non_zero_imm_3(void) +{ + asm volatile (" \ + r0 = -41; \ + r0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 4") +__success __success_unpriv __retval(-21) +__naked void sdiv64_non_zero_imm_4(void) +{ + asm volatile (" \ + r0 = -42; \ + r0 s/= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 5") +__success __success_unpriv __retval(-21) +__naked void sdiv64_non_zero_imm_5(void) +{ + asm volatile (" \ + r0 = 42; \ + r0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero imm divisor, check 6") +__success __success_unpriv __retval(21) +__naked void sdiv64_non_zero_imm_6(void) +{ + asm volatile (" \ + r0 = -42; \ + r0 s/= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 1") +__success __success_unpriv __retval(-20) +__naked void sdiv64_non_zero_reg_1(void) +{ + asm volatile (" \ + r0 = -41; \ + r1 = 2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 2") +__success __success_unpriv __retval(-20) +__naked void sdiv64_non_zero_reg_2(void) +{ + asm volatile (" \ + r0 = 41; \ + r1 = -2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 3") +__success __success_unpriv __retval(20) +__naked void sdiv64_non_zero_reg_3(void) +{ + asm volatile (" \ + r0 = -41; \ + r1 = -2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 4") +__success __success_unpriv __retval(-21) +__naked void sdiv64_non_zero_reg_4(void) +{ + asm volatile (" \ + r0 = -42; \ + r1 = 2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 5") +__success __success_unpriv __retval(-21) +__naked void sdiv64_non_zero_reg_5(void) +{ + asm volatile (" \ + r0 = 42; \ + r1 = -2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, non-zero reg divisor, check 6") +__success __success_unpriv __retval(21) +__naked void sdiv64_non_zero_reg_6(void) +{ + asm volatile (" \ + r0 = -42; \ + r1 = -2; \ + r0 s/= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 1") +__success __success_unpriv __retval(-1) +__naked void smod32_non_zero_imm_1(void) +{ + asm volatile (" \ + w0 = -41; \ + w0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 2") +__success __success_unpriv __retval(1) +__naked void smod32_non_zero_imm_2(void) +{ + asm volatile (" \ + w0 = 41; \ + w0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 3") +__success __success_unpriv __retval(-1) +__naked void smod32_non_zero_imm_3(void) +{ + asm volatile (" \ + w0 = -41; \ + w0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 4") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_imm_4(void) +{ + asm volatile (" \ + w0 = -42; \ + w0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 5") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_imm_5(void) +{ + asm volatile (" \ + w0 = 42; \ + w0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero imm divisor, check 6") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_imm_6(void) +{ + asm volatile (" \ + w0 = -42; \ + w0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 1") +__success __success_unpriv __retval(-1) +__naked void smod32_non_zero_reg_1(void) +{ + asm volatile (" \ + w0 = -41; \ + w1 = 2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 2") +__success __success_unpriv __retval(1) +__naked void smod32_non_zero_reg_2(void) +{ + asm volatile (" \ + w0 = 41; \ + w1 = -2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 3") +__success __success_unpriv __retval(-1) +__naked void smod32_non_zero_reg_3(void) +{ + asm volatile (" \ + w0 = -41; \ + w1 = -2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 4") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_reg_4(void) +{ + asm volatile (" \ + w0 = -42; \ + w1 = 2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 5") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_reg_5(void) +{ + asm volatile (" \ + w0 = 42; \ + w1 = -2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, non-zero reg divisor, check 6") +__success __success_unpriv __retval(0) +__naked void smod32_non_zero_reg_6(void) +{ + asm volatile (" \ + w0 = -42; \ + w1 = -2; \ + w0 s%%= w1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 1") +__success __success_unpriv __retval(-1) +__naked void smod64_non_zero_imm_1(void) +{ + asm volatile (" \ + r0 = -41; \ + r0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 2") +__success __success_unpriv __retval(1) +__naked void smod64_non_zero_imm_2(void) +{ + asm volatile (" \ + r0 = 41; \ + r0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 3") +__success __success_unpriv __retval(-1) +__naked void smod64_non_zero_imm_3(void) +{ + asm volatile (" \ + r0 = -41; \ + r0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 4") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_imm_4(void) +{ + asm volatile (" \ + r0 = -42; \ + r0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 5") +__success __success_unpriv __retval(-0) +__naked void smod64_non_zero_imm_5(void) +{ + asm volatile (" \ + r0 = 42; \ + r0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 6") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_imm_6(void) +{ + asm volatile (" \ + r0 = -42; \ + r0 s%%= -2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 7") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_imm_7(void) +{ + asm volatile (" \ + r0 = 42; \ + r0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero imm divisor, check 8") +__success __success_unpriv __retval(1) +__naked void smod64_non_zero_imm_8(void) +{ + asm volatile (" \ + r0 = 41; \ + r0 s%%= 2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 1") +__success __success_unpriv __retval(-1) +__naked void smod64_non_zero_reg_1(void) +{ + asm volatile (" \ + r0 = -41; \ + r1 = 2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 2") +__success __success_unpriv __retval(1) +__naked void smod64_non_zero_reg_2(void) +{ + asm volatile (" \ + r0 = 41; \ + r1 = -2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 3") +__success __success_unpriv __retval(-1) +__naked void smod64_non_zero_reg_3(void) +{ + asm volatile (" \ + r0 = -41; \ + r1 = -2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 4") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_reg_4(void) +{ + asm volatile (" \ + r0 = -42; \ + r1 = 2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 5") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_reg_5(void) +{ + asm volatile (" \ + r0 = 42; \ + r1 = -2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 6") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_reg_6(void) +{ + asm volatile (" \ + r0 = -42; \ + r1 = -2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 7") +__success __success_unpriv __retval(0) +__naked void smod64_non_zero_reg_7(void) +{ + asm volatile (" \ + r0 = 42; \ + r1 = 2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, non-zero reg divisor, check 8") +__success __success_unpriv __retval(1) +__naked void smod64_non_zero_reg_8(void) +{ + asm volatile (" \ + r0 = 41; \ + r1 = 2; \ + r0 s%%= r1; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV32, zero divisor") +__success __success_unpriv __retval(0) +__naked void sdiv32_zero_divisor(void) +{ + asm volatile (" \ + w0 = 42; \ + w1 = 0; \ + w2 = -1; \ + w2 s/= w1; \ + w0 = w2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SDIV64, zero divisor") +__success __success_unpriv __retval(0) +__naked void sdiv64_zero_divisor(void) +{ + asm volatile (" \ + r0 = 42; \ + r1 = 0; \ + r2 = -1; \ + r2 s/= r1; \ + r0 = r2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD32, zero divisor") +__success __success_unpriv __retval(-1) +__naked void smod32_zero_divisor(void) +{ + asm volatile (" \ + w0 = 42; \ + w1 = 0; \ + w2 = -1; \ + w2 s%%= w1; \ + w0 = w2; \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("SMOD64, zero divisor") +__success __success_unpriv __retval(-1) +__naked void smod64_zero_divisor(void) +{ + asm volatile (" \ + r0 = 42; \ + r1 = 0; \ + r2 = -1; \ + r2 s%%= r1; \ + r0 = r2; \ + exit; \ +" ::: __clobber_all); +} + +#else + +SEC("socket") +__description("cpuv4 is not supported by compiler or jit, use a dummy test") +__success +int dummy_test(void) +{ + return 0; +} + +#endif + +char _license[] SEC("license") = "GPL";

[bpf-next,v5,14/17] selftests/bpf: Add unit tests for new sdiv/smod insns

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