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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 LDR (immediate, Thumb)
+
+@id 56
+
+@desc {
+
+ Load Register (immediate) calculates an address from a base register value and an immediate offset, loads a word from memory, and writes it to a register. It can use offset, post-indexed, or pre-indexed addressing. For information about memory accesses see Memory accesses on page A8-294.
+
+}
+
+@encoding (t1) {
+
+ @half 0 1 1 0 1 imm5(5) Rn(3) Rt(3)
+
+ @syntax {
+
+ @subid 168
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm5:'00', 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldr reg_T maccess
+
+ }
+
+}
+
+@encoding (t2) {
+
+ @half 1 0 0 1 1 Rt(3) imm8(8)
+
+ @syntax {
+
+ @subid 169
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(13)
+ imm32 = ZeroExtend(imm8:'00', 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldr reg_T maccess
+
+ }
+
+}
+
+@encoding (T3) {
+
+ @word 1 1 1 1 1 0 0 0 1 1 0 1 Rn(4) Rt(4) imm12(12)
+
+ @syntax {
+
+ @subid 170
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm12, 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldr.w reg_T maccess
+
+ }
+
+}
+
+@encoding (T4) {
+
+ @word 1 1 1 1 1 0 0 0 0 1 0 1 Rn(4) Rt(4) 1 P(1) U(1) W(1) imm8(8)
+
+ @syntax {
+
+ @subid 171
+
+ @assert {
+
+ P == 1
+ W == 0
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8, 32)
+ maccess = MemAccessOffset(reg_N, imm32)
+
+ }
+
+ @asm ldr reg_T maccess
+
+ }
+
+ @syntax {
+
+ @subid 172
+
+ @assert {
+
+ P == 1
+ W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8, 32)
+ maccess = MemAccessPreIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldr reg_T maccess
+
+ }
+
+ @syntax {
+
+ @subid 173
+
+ @assert {
+
+ P == 0
+ W == 1
+
+ }
+
+ @conv {
+
+ reg_T = Register(Rt)
+ reg_N = Register(Rn)
+ imm32 = ZeroExtend(imm8, 32)
+ maccess = MemAccessPostIndexed(reg_N, imm32)
+
+ }
+
+ @asm ldr reg_T maccess
+
+ }
+
+}
+