From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46769) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gEFr5-00068J-K6 for qemu-devel@nongnu.org; Sun, 21 Oct 2018 11:41:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gEFr2-0005U5-Ei for qemu-devel@nongnu.org; Sun, 21 Oct 2018 11:41:27 -0400 Received: from pio-pvt-msa2.bahnhof.se ([79.136.2.41]:47363) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gEFr2-0005Sq-5W for qemu-devel@nongnu.org; Sun, 21 Oct 2018 11:41:24 -0400 Date: Sun, 21 Oct 2018 17:41:21 +0200 From: Fredrik Noring Message-ID: <2909560e25c4fa5899533558fbe94897e6bf83e5.1540134918.git.noring@nocrew.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Subject: [Qemu-devel] [PATCH v8 27/38] tests/tcg/mips: Test R5900 three-operand MULT1 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Aleksandar Markovic , "Maciej W. Rozycki" , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Cc: Richard Henderson , Aurelien Jarno , Petar Jovanovic , Peter Maydell , =?utf-8?Q?J=C3=BCrgen?= Urban , qemu-devel@nongnu.org Signed-off-by: Fredrik Noring --- tests/tcg/mips/mipsr5900/mult.c | 45 +++++++++++++++++++++++++++------ 1 file changed, 37 insertions(+), 8 deletions(-) diff --git a/tests/tcg/mips/mipsr5900/mult.c b/tests/tcg/mips/mipsr5900/mult.c index 2c0c16d232..5710b395e6 100644 --- a/tests/tcg/mips/mipsr5900/mult.c +++ b/tests/tcg/mips/mipsr5900/mult.c @@ -1,5 +1,5 @@ /* - * Test R5900-specific three-operand MULT. + * Test R5900-specific three-operand MULT and MULT1. */ #include @@ -25,12 +25,41 @@ static int64_t mult(int32_t rs, int32_t rt) return r; } +static int64_t mult1(int32_t rs, int32_t rt) +{ + int32_t rd, lo, hi; + int64_t r; + + __asm__ __volatile__ ( + " mult1 %0, %3, %4\n" + " mflo1 %1\n" + " mfhi1 %2\n" + : "=r" (rd), "=r" (lo), "=r" (hi) + : "r" (rs), "r" (rt)); + r = ((int64_t)hi << 32) | (uint32_t)lo; + + assert((int64_t)rs * rt == r); + assert(rd == lo); + + return r; +} + +static int64_t mult_variants(int32_t rs, int32_t rt) +{ + int64_t rd = mult(rs, rt); + int64_t rd1 = mult1(rs, rt); + + assert(rd == rd1); + + return rd; +} + static void verify_mult_negations(int32_t rs, int32_t rt, int64_t expected) { - assert(mult(rs, rt) == expected); - assert(mult(-rs, rt) == -expected); - assert(mult(rs, -rt) == -expected); - assert(mult(-rs, -rt) == expected); + assert(mult_variants(rs, rt) == expected); + assert(mult_variants(-rs, rt) == -expected); + assert(mult_variants(rs, -rt) == -expected); + assert(mult_variants(-rs, -rt) == expected); } int main() @@ -39,9 +68,9 @@ int main() verify_mult_negations(77773, 99991, 7776600043); verify_mult_negations(12207031, 305175781, 3725290219116211); - assert(mult(-0x80000000, 0x7FFFFFFF) == -0x3FFFFFFF80000000); - assert(mult(-0x80000000, -0x7FFFFFFF) == 0x3FFFFFFF80000000); - assert(mult(-0x80000000, -0x80000000) == 0x4000000000000000); + assert(mult_variants(-0x80000000, 0x7FFFFFFF) == -0x3FFFFFFF80000000); + assert(mult_variants(-0x80000000, -0x7FFFFFFF) == 0x3FFFFFFF80000000); + assert(mult_variants(-0x80000000, -0x80000000) == 0x4000000000000000); return 0; } -- 2.18.1