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Mon, 23 Aug 2021 12:55:32 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 02/24] tests/tcg/riscv64: Add test for division Date: Mon, 23 Aug 2021 12:55:07 -0700 Message-Id: <20210823195529.560295-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210823195529.560295-1-richard.henderson@linaro.org> References: <20210823195529.560295-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alistair.francis@wdc.com, bin.meng@windriver.com, qemu-riscv@nongnu.org, Bin Meng Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Tested-by: Bin Meng Reviewed-by: Bin Meng Reviewed-by: Alistair Francis Signed-off-by: Richard Henderson --- tests/tcg/riscv64/test-div.c | 58 +++++++++++++++++++++++++++++++ tests/tcg/riscv64/Makefile.target | 5 +++ 2 files changed, 63 insertions(+) create mode 100644 tests/tcg/riscv64/test-div.c create mode 100644 tests/tcg/riscv64/Makefile.target diff --git a/tests/tcg/riscv64/test-div.c b/tests/tcg/riscv64/test-div.c new file mode 100644 index 0000000000..a90480be3f --- /dev/null +++ b/tests/tcg/riscv64/test-div.c @@ -0,0 +1,58 @@ +#include +#include + +struct TestS { + long x, y, q, r; +}; + +static struct TestS test_s[] = { + { 4, 2, 2, 0 }, /* normal cases */ + { 9, 7, 1, 2 }, + { 0, 0, -1, 0 }, /* div by zero cases */ + { 9, 0, -1, 9 }, + { LONG_MIN, -1, LONG_MIN, 0 }, /* overflow case */ +}; + +struct TestU { + unsigned long x, y, q, r; +}; + +static struct TestU test_u[] = { + { 4, 2, 2, 0 }, /* normal cases */ + { 9, 7, 1, 2 }, + { 0, 0, ULONG_MAX, 0 }, /* div by zero cases */ + { 9, 0, ULONG_MAX, 9 }, +}; + +#define ARRAY_SIZE(X) (sizeof(X) / sizeof(*(X))) + +int main (void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(test_s); i++) { + long q, r; + + asm("div %0, %2, %3\n\t" + "rem %1, %2, %3" + : "=&r" (q), "=r" (r) + : "r" (test_s[i].x), "r" (test_s[i].y)); + + assert(q == test_s[i].q); + assert(r == test_s[i].r); + } + + for (i = 0; i < ARRAY_SIZE(test_u); i++) { + unsigned long q, r; + + asm("divu %0, %2, %3\n\t" + "remu %1, %2, %3" + : "=&r" (q), "=r" (r) + : "r" (test_u[i].x), "r" (test_u[i].y)); + + assert(q == test_u[i].q); + assert(r == test_u[i].r); + } + + return 0; +} diff --git a/tests/tcg/riscv64/Makefile.target b/tests/tcg/riscv64/Makefile.target new file mode 100644 index 0000000000..d41bf6d60d --- /dev/null +++ b/tests/tcg/riscv64/Makefile.target @@ -0,0 +1,5 @@ +# -*- Mode: makefile -*- +# RISC-V specific tweaks + +VPATH += $(SRC_PATH)/tests/tcg/riscv64 +TESTS += test-div