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+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ##FILE## - traduction d'instructions ARMv7
+ *
+ * Copyright (C) 2015 Cyrille Bagard
+ *
+ * This file is part of Chrysalide.
+ *
+ * Chrysalide 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.
+ *
+ * Chrysalide 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+@title SMLSD
+
+@desc Signed Multiply Subtract Dual performs two signed 16 × 16-bit multiplications. It adds the difference of the products to a 32-bit accumulate operand. Optionally, the instruction can exchange the halfwords of the second operand before performing the arithmetic. This produces top × bottom and bottom × top multiplication. This instruction sets the Q flag if the accumulate operation overflows. Overflow cannot occur during the multiplications or subtraction.
+
+@encoding (T1) {
+
+ @word 1 1 1 1 1 0 1 1 0 1 0 0 Rn(4) Ra(4) Rd(4) 0 0 0 M(1) Rm(4)
+
+ @syntax <reg_D> <reg_N> <reg_M> <reg_A>
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ reg_M = Register(Rm)
+ reg_A = Register(Ra)
+ m_swap = (M == '1')
+
+ }
+
+ @rules {
+
+ if (m_swap); chk_call ExtendKeyword("x")
+
+ }
+
+}
+
+@encoding (A1) {
+
+ @word cond(4) 0 1 1 1 0 0 0 0 Rd(4) Ra(4) Rm(4) 0 1 M(1) 1 Rn(4)
+
+ @syntax <reg_D> <reg_N> <reg_M> <reg_A>
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ reg_M = Register(Rm)
+ reg_A = Register(Ra)
+ m_swap = (M == '1')
+
+ }
+
+ @rules {
+
+ if (m_swap); chk_call ExtendKeyword("x")
+ chk_call StoreCondition(cond)
+
+ }
+
+}
+