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Fri, 06 Oct 2023 17:41:20 -0700 (PDT) Received: from charlie.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id x16-20020a170902ec9000b001c582de968dsm4534540plg.72.2023.10.06.17.41.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Oct 2023 17:41:20 -0700 (PDT) From: Charlie Jenkins Date: Fri, 06 Oct 2023 17:41:07 -0700 Subject: [PATCH v2 2/2] riscv: Add tests for riscv module loading MIME-Version: 1.0 Message-Id: <20231006-module_relocations-v2-2-47566453fedc@rivosinc.com> References: <20231006-module_relocations-v2-0-47566453fedc@rivosinc.com> In-Reply-To: <20231006-module_relocations-v2-0-47566453fedc@rivosinc.com> To: linux-riscv@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Eric Biederman , Kees Cook , Paul Walmsley , Palmer Dabbelt , Albert Ou , Charlie Jenkins X-Mailer: b4 0.12.3 X-Rspamd-Queue-Id: 026221C0005 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: zcoo34wccfdjtzq16hc4zgefpsnynm1h X-HE-Tag: 1696639281-1322 X-HE-Meta: U2FsdGVkX197jtPzF/jsRBnLWY0he5oEiQhjCvcHwMt7RDqR1tkqM7lgi7njUQXtap6zWXSEyxPUMd3lvYhD8QsnsBosbPRtO3cu4hx4KNq9gbb6mmygU8dQPvqHSAiZ1llGdRGEf+oqIt7rRM6eTNnwXb5eo0QM4P6/VduXqYWQU7EIZr3dOPH21ywhVyi1QC0ygknmCepAl3tDxsW5mbyLxgbQYvCEAR44ro/QWMozi4xLVDf9gdzjsvLEryj4i+FecXFjIAYM0zTYQEZgtje4jLnfwPR5xmZQTw2N8waoYn84XfmS6VEaWW29Uotqv5EgsHfJ8yU8UI5sbB/5v/8ZZ0SvQ277HDGftzd9p8QDu/CRrdEZGgUEvsKLYa5HjeCTiK2MVz8fozZfo+OFbeAaStK8RlkyXVZ52ufmYAKH52I/O8vLBJhZJMY7O93STg40Nj+VayLtRUU5y8TE6jvvDpKW0Y0HUuL4b2hmxeTGQTjhVXlixP/AcSbHLp9eVso2SFjDr6VE+F+y3rfslWk3jSjCy1yWSILMUDOKjaQ3+/JIVLGkmPXelSN9jn8sPzq0tUjvtpxLeB0IztF7OT1ZY4vJ3QJjCK6vIAyTEJ3a0nosSY5+4Mm0yHu4CLOuxcG92w3dbyUG51LtZKD2g5cA2PNpvE2deidtzi+lAupKEU7Bd3Pqy2tHKlY/M8eTkLJ+0VJzBo3puPAEhvyN8HtAoFVIDcJUNnEHHiLT6b3inGYAeGn5cZNob4MNBzxnYrwD9VYr7vrfLPZq41tGVdnfSvQFTjK+J/MfOitCRNXxZoyE7qG8smY1fb8wpsVcg9vbvw6e1msHBRT4zJCPILG/o82Kb4ZsxLDSRGNgW7cgc/uIlHGNZWnsWEewwHO7r70pHUnia4DMACMMOu4WXYB6bK6gK0Gi/aeW2kHvehTAqbEkxJO12J61NQGPIB7daul5MhRg9JwIfQ75bRY fERQmJyb 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000106, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add test cases for the two main groups of relocations added: SUB and SET, along with uleb128 which is a bit different because SUB and SET are required to happen together. Signed-off-by: Charlie Jenkins --- arch/riscv/Kconfig.debug | 1 + arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/tests/Kconfig.debug | 32 ++++++++++ arch/riscv/kernel/tests/Makefile | 1 + arch/riscv/kernel/tests/module_test/Makefile | 15 +++++ .../tests/module_test/test_module_linking_main.c | 73 ++++++++++++++++++++++ arch/riscv/kernel/tests/module_test/test_set16.S | 23 +++++++ arch/riscv/kernel/tests/module_test/test_set32.S | 20 ++++++ arch/riscv/kernel/tests/module_test/test_set6.S | 23 +++++++ arch/riscv/kernel/tests/module_test/test_set8.S | 23 +++++++ arch/riscv/kernel/tests/module_test/test_sub16.S | 22 +++++++ arch/riscv/kernel/tests/module_test/test_sub32.S | 22 +++++++ arch/riscv/kernel/tests/module_test/test_sub6.S | 22 +++++++ arch/riscv/kernel/tests/module_test/test_sub64.S | 27 ++++++++ arch/riscv/kernel/tests/module_test/test_sub8.S | 22 +++++++ arch/riscv/kernel/tests/module_test/test_uleb128.S | 20 ++++++ 16 files changed, 347 insertions(+) diff --git a/arch/riscv/Kconfig.debug b/arch/riscv/Kconfig.debug index e69de29bb2d1..eafe17ebf710 100644 --- a/arch/riscv/Kconfig.debug +++ b/arch/riscv/Kconfig.debug @@ -0,0 +1 @@ +source "arch/riscv/kernel/tests/Kconfig.debug" diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 95cf25d48405..bb99657252f4 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -57,6 +57,7 @@ obj-y += stacktrace.o obj-y += cacheinfo.o obj-y += patch.o obj-y += probes/ +obj-y += tests/ obj-$(CONFIG_MMU) += vdso.o vdso/ obj-$(CONFIG_RISCV_M_MODE) += traps_misaligned.o diff --git a/arch/riscv/kernel/tests/Kconfig.debug b/arch/riscv/kernel/tests/Kconfig.debug new file mode 100644 index 000000000000..05ca55fb4645 --- /dev/null +++ b/arch/riscv/kernel/tests/Kconfig.debug @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "arch/riscv/kernel Testing and Coverage" + +menuconfig RUNTIME_KERNEL_TESTING_MENU + bool "arch/riscv/kernel runtime Testing" + def_bool y + help + Enable riscv kernel runtime testing. + +if RUNTIME_KERNEL_TESTING_MENU + +config RISCV_MODULE_LINKING_KUNIT + bool "KUnit test riscv module linking at runtime" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + Enable this option to test riscv module linking at boot. This will + enable a module called "test_module_linking". + + KUnit tests run during boot and output the results to the debug log + in TAP format (http://testanything.org/). Only useful for kernel devs + running the KUnit test harness, and not intended for inclusion into a + production build. + + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + +endif # RUNTIME_TESTING_MENU + +endmenu # "arch/riscv/kernel runtime Testing" diff --git a/arch/riscv/kernel/tests/Makefile b/arch/riscv/kernel/tests/Makefile new file mode 100644 index 000000000000..7d6c76cffe20 --- /dev/null +++ b/arch/riscv/kernel/tests/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_RISCV_MODULE_LINKING_KUNIT) += module_test/ diff --git a/arch/riscv/kernel/tests/module_test/Makefile b/arch/riscv/kernel/tests/module_test/Makefile new file mode 100644 index 000000000000..cacd50cd1127 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/Makefile @@ -0,0 +1,15 @@ +obj-m += test_module_linking.o + +test_sub := test_sub6.o test_sub8.o test_sub16.o test_sub32.o test_sub64.o + +test_set := test_set6.o test_set8.o test_set16.o test_set32.o + +test_uleb := test_uleb128.o + +test_module_linking-objs += $(test_sub) + +test_module_linking-objs += $(test_set) + +test_module_linking-objs += $(test_uleb) + +test_module_linking-objs += test_module_linking_main.o diff --git a/arch/riscv/kernel/tests/module_test/test_module_linking_main.c b/arch/riscv/kernel/tests/module_test/test_module_linking_main.c new file mode 100644 index 000000000000..c142c2657d0c --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_module_linking_main.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 Rivos Inc. + */ + +#include +#include +#include +#include + +MODULE_LICENSE("GPL"); + +extern int test_set32(void); +extern int test_set16(void); +extern int test_set8(void); +extern int test_set6(void); +extern long test_sub64(void); +extern int test_sub32(void); +extern int test_sub16(void); +extern int test_sub8(void); +extern int test_sub6(void); +extern int test_uleb(void); + +#define CHECK_EQ(lhs, rhs) KUNIT_ASSERT_EQ(test, lhs, rhs) + +void run_test_set(struct kunit *test) +{ + int val32 = test_set32(); + int val16 = test_set16(); + int val8 = test_set8(); + int val6 = test_set6(); + + CHECK_EQ(val32, 0); + CHECK_EQ(val16, 0); + CHECK_EQ(val8, 0); + CHECK_EQ(val6, 0); +} + +void run_test_sub(struct kunit *test) +{ + int val64 = test_sub64(); + int val32 = test_sub32(); + int val16 = test_sub16(); + int val8 = test_sub8(); + int val6 = test_sub6(); + + CHECK_EQ(val64, 0); + CHECK_EQ(val32, 0); + CHECK_EQ(val16, 0); + CHECK_EQ(val8, 0); + CHECK_EQ(val6, 0); +} + +void run_test_uleb(struct kunit *test) +{ + int valuleb = test_uleb(); + + CHECK_EQ(valuleb, 0); +} + +static struct kunit_case __refdata riscv_module_linking_test_cases[] = { + KUNIT_CASE(run_test_set), + KUNIT_CASE(run_test_sub), + KUNIT_CASE(run_test_uleb), + {} +}; + +static struct kunit_suite riscv_module_linking_test_suite = { + .name = "riscv_checksum", + .test_cases = riscv_module_linking_test_cases, +}; + +kunit_test_suites(&riscv_module_linking_test_suite); diff --git a/arch/riscv/kernel/tests/module_test/test_set16.S b/arch/riscv/kernel/tests/module_test/test_set16.S new file mode 100644 index 000000000000..2be0e441a12e --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set16.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set16 +test_set16: + lw a0, set16 + la t0, set16 +#ifdef CONFIG_32BIT + slli t0, t0, 16 + srli t0, t0, 16 +#else + slli t0, t0, 48 + srli t0, t0, 48 +#endif + sub a0, a0, t0 + ret +.data +set16: + .reloc set16, R_RISCV_SET16, set16 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set32.S b/arch/riscv/kernel/tests/module_test/test_set32.S new file mode 100644 index 000000000000..de0444537e67 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set32.S @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set32 +test_set32: + lw a0, set32 + la t0, set32 +#ifndef CONFIG_32BIT + slli t0, t0, 32 + srli t0, t0, 32 +#endif + sub a0, a0, t0 + ret +.data +set32: + .reloc set32, R_RISCV_SET32, set32 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set6.S b/arch/riscv/kernel/tests/module_test/test_set6.S new file mode 100644 index 000000000000..c39ce4c219eb --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set6.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set6 +test_set6: + lw a0, set6 + la t0, set6 +#ifdef CONFIG_32BIT + slli t0, t0, 26 + srli t0, t0, 26 +#else + slli t0, t0, 58 + srli t0, t0, 58 +#endif + sub a0, a0, t0 + ret +.data +set6: + .reloc set6, R_RISCV_SET6, set6 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set8.S b/arch/riscv/kernel/tests/module_test/test_set8.S new file mode 100644 index 000000000000..a656173f6f99 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set8.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set8 +test_set8: + lw a0, set8 + la t0, set8 +#ifdef CONFIG_32BIT + slli t0, t0, 24 + srli t0, t0, 24 +#else + slli t0, t0, 56 + srli t0, t0, 56 +#endif + sub a0, a0, t0 + ret +.data +set8: + .reloc set8, R_RISCV_SET8, set8 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub16.S b/arch/riscv/kernel/tests/module_test/test_sub16.S new file mode 100644 index 000000000000..c561e155d1db --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub16.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub16 +test_sub16: + lh a0, sub16 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub16: + .reloc sub16, R_RISCV_ADD16, second + .reloc sub16, R_RISCV_SUB16, first + .half 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub32.S b/arch/riscv/kernel/tests/module_test/test_sub32.S new file mode 100644 index 000000000000..93232c70cae6 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub32.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub32 +test_sub32: + lw a0, sub32 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub32: + .reloc sub32, R_RISCV_ADD32, second + .reloc sub32, R_RISCV_SUB32, first + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub6.S b/arch/riscv/kernel/tests/module_test/test_sub6.S new file mode 100644 index 000000000000..d9c9526ceb62 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub6.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub6 +test_sub6: + lb a0, sub6 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub6: + .reloc sub6, R_RISCV_SET6, second + .reloc sub6, R_RISCV_SUB6, first + .byte 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub64.S b/arch/riscv/kernel/tests/module_test/test_sub64.S new file mode 100644 index 000000000000..6d260e2a5d98 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub64.S @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub64 +test_sub64: +#ifdef CONFIG_32BIT + lw a0, sub64 +#else + ld a0, sub64 +#endif + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub64: + .reloc sub64, R_RISCV_ADD64, second + .reloc sub64, R_RISCV_SUB64, first + .word 0 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub8.S b/arch/riscv/kernel/tests/module_test/test_sub8.S new file mode 100644 index 000000000000..af7849115d4d --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub8.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub8 +test_sub8: + lb a0, sub8 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub8: + .reloc sub8, R_RISCV_ADD8, second + .reloc sub8, R_RISCV_SUB8, first + .byte 0 diff --git a/arch/riscv/kernel/tests/module_test/test_uleb128.S b/arch/riscv/kernel/tests/module_test/test_uleb128.S new file mode 100644 index 000000000000..db9f301092d0 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_uleb128.S @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_uleb +test_uleb: + ld a0, second + addi a0, a0, -127 + ret +.data +first: + .rept 127 + .byte 0 + .endr +second: + .reloc second, R_RISCV_SET_ULEB128, second + .reloc second, R_RISCV_SUB_ULEB128, first + .dword 0