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diff --git a/plugins/arm/v7/opdefs/A8867_ldrb.d b/plugins/arm/v7/opdefs/A8867_ldrb.d
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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 LDRB (immediate, Thumb)
+
+@id 61
+
+@desc {
+
+	Load Register Byte (immediate) calculates an address from a base register value and an immediate offset, loads a byte from memory, zero-extends it to form a 32-bit word, 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 1 1 imm5(5) Rn(3) Rt(3)
+
+	@syntax {
+
+		@subid 185
+
+		@conv {
+
+			reg_T = Register(Rt)
+			reg_N = Register(Rn)
+			imm32 = ZeroExtend(imm5, 32)
+			maccess = MemAccessOffset(reg_N, imm32)
+
+		}
+
+		@asm ldrb reg_T maccess
+
+	}
+
+}
+
+@encoding (T2) {
+
+	@word 1 1 1 1 1 0 0 0 1 0 0 1 Rn(4) Rt(4) imm12(12)
+
+	@syntax {
+
+		@subid 186
+
+		@conv {
+
+			reg_T = Register(Rt)
+			reg_N = Register(Rn)
+			imm32 = ZeroExtend(imm12, 32)
+			maccess = MemAccessOffset(reg_N, imm32)
+
+		}
+
+		@asm ldrb.w reg_T maccess
+
+	}
+
+}
+
+@encoding (T3) {
+
+	@word 1 1 1 1 1 0 0 0 0 0 0 1 Rn(4) Rt(4) 1 P(1) U(1) W(1) imm8(8)
+
+	@syntax {
+
+		@subid 187
+
+		@assert {
+
+			P == 1
+			W == 0
+
+		}
+
+		@conv {
+
+			reg_T = Register(Rt)
+			reg_N = Register(Rn)
+			imm32 = ZeroExtend(imm8, 32)
+			maccess = MemAccessOffset(reg_N, imm32)
+
+		}
+
+		@asm ldrb reg_T maccess
+
+	}
+
+	@syntax {
+
+		@subid 188
+
+		@assert {
+
+			P == 1
+			W == 1
+
+		}
+
+		@conv {
+
+			reg_T = Register(Rt)
+			reg_N = Register(Rn)
+			imm32 = ZeroExtend(imm8, 32)
+			maccess = MemAccessPreIndexed(reg_N, imm32)
+
+		}
+
+		@asm ldrb reg_T maccess
+
+	}
+
+	@syntax {
+
+		@subid 189
+
+		@assert {
+
+			P == 0
+			W == 1
+
+		}
+
+		@conv {
+
+			reg_T = Register(Rt)
+			reg_N = Register(Rn)
+			imm32 = ZeroExtend(imm8, 32)
+			maccess = MemAccessPostIndexed(reg_N, imm32)
+
+		}
+
+		@asm ldrb reg_T maccess
+
+	}
+
+}
+