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+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ##FILE## - traduction d'instructions ARMv7
+ *
+ * Copyright (C) 2017 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+@title LDRD (immediate)
+
+@id 66
+
+@desc {
+
+ Load Register Dual (immediate) calculates an address from a base register value and an immediate offset, loads two words from memory, and writes them to two registers. It can use offset, post-indexed, or pre-indexed addressing. For information about memory accesses see Memory accesses on page A8-294.
+
+}
+
+@encoding (T1) {
+
+ @word 1 1 1 0 1 0 0 P(1) U(1) 1 W(1) 1 Rn(4) Rt(4) Rt2(4) imm8(8)
+
+ @syntax {
+
+ @subid 203
+
+ @assert {
+
+ P == 1
+ W == 0
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = Register(Rt2)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8:'00', 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ }
+
+ @syntax {
+
+ @subid 204
+
+ @assert {
+
+ P == 1
+ W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = Register(Rt2)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8:'00', 32)
+ maccess = MemAccessPreIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ }
+
+ @syntax {
+
+ @subid 205
+
+ @assert {
+
+ P == 0
+ W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = Register(Rt2)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8:'00', 32)
+ maccess = MemAccessPostIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ }
+
+}
+
+@encoding (A1) {
+
+ @word cond(4) 0 0 0 P(1) U(1) 1 W(1) 0 Rn(4) Rt(4) imm4H(4) 1 1 0 1 imm4L(4)
+
+ @syntax {
+
+ @subid 206
+
+ @assert {
+
+ P == 1
+ P == 1 && W == 0
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = NextRegister(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm4H:imm4L, 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ @rules {
+
+ check g_arm_instruction_set_cond(cond)
+
+ }
+
+ }
+
+ @syntax {
+
+ @subid 207
+
+ @assert {
+
+ P == 1
+ P == 0 || W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = NextRegister(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm4H:imm4L, 32)
+ maccess = MemAccessPreIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ @rules {
+
+ check g_arm_instruction_set_cond(cond)
+
+ }
+
+ }
+
+ @syntax {
+
+ @subid 208
+
+ @assert {
+
+ P == 0
+ P == 0 || W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_T2 = NextRegister(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm4H:imm4L, 32)
+ maccess = MemAccessPostIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldrd reg_T reg_T2 maccess
+
+ @rules {
+
+ check g_arm_instruction_set_cond(cond)
+
+ }
+
+ }
+
+}
+