1 files changed, 89 insertions, 0 deletions
diff --git a/sim/testsuite/pru/mul.s b/sim/testsuite/pru/mul.s
new file mode 100644
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+++ b/sim/testsuite/pru/mul.s
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+# Check that multiplication works.
+# mach: pru
+
+# Copyright (C) 2016-2021 Free Software Foundation, Inc.
+# Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
+#
+# This file is part of the GNU simulators.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+.include "testutils.inc"
+
+	start
+
+	# MUL: Test regular case
+	ldi r28, 1001
+	ldi r29, 4567
+	nop
+	xin 0, r26, 4
+	qbne32 2f, r26, 1001 * 4567
+
+	# MUL: Test the pipeline emulation
+	ldi r28, 1002
+	ldi r29, 1003
+	ldi r29, 4004
+	xin 0, r26, 4
+	qbne32 2f, r26, 1002 * 1003
+	xin 0, r26, 4
+	qbne32 2f, r26, 1002 * 4004
+
+	# MUL: Test 64-bit result
+	ldi32 r28, 0x12345678
+	ldi32 r29, 0xaabbccdd
+	nop
+	xin 0, r26, 8
+	qbne32 2f, r26, 0x45BE4598
+	qbne32 2f, r27, 0xC241C38
+
+	# MAC: Test regular case
+	ldi r25, 1
+	xout 0, r25, 1
+	ldi r25, 3
+	xout 0, r25, 1
+
+	ldi r25, 1
+	ldi r28, 1001
+	ldi r29, 2002
+	xout 0, r25, 1
+	ldi r28, 3003
+	ldi r29, 4004
+	xout 0, r25, 1
+
+	xin 0, r26, 4
+	qbne32 2f, r26, (1001 * 2002) + (3003 * 4004)
+
+	# MAC: Test 64-bit result
+	ldi r25, 3
+	xout 0, r25, 1
+
+	ldi r25, 1
+	ldi32 r28, 0x10203040
+	ldi32 r29, 0x50607080
+	xout 0, r25, 1
+	ldi32 r28, 0xa0b0c0d0
+	ldi32 r29, 0x11223344
+	xout 0, r25, 1
+
+	xin 0, r26, 8
+	qbne32 2f, r26, 0x8E30C740
+	qbne32 2f, r27, 0xFD156B1
+
+	jmp 1f
+
+	fail
+
+1:
+	pass
+2:	fail