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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 RSB (immediate)
+
+@id 145
+
+@desc {
+
+ Reverse Subtract (immediate) subtracts a register value from an immediate value, and writes the result to the destination register. It can optionally update the condition flags based on the result.
+
+}
+
+@encoding (t1) {
+
+ @half 0 1 0 0 0 0 1 0 0 1 Rn(3) Rd(3)
+
+ @syntax {
+
+ @subid 443
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ imm32 = Zeros(32)
+
+ }
+
+ @asm rsb ?reg_D reg_N imm32
+
+ }
+
+}
+
+@encoding (T2) {
+
+ @word 1 1 1 1 0 i(1) 0 1 1 1 0 S(1) Rn(4) 0 imm3(3) Rd(4) imm8(8)
+
+ @syntax {
+
+ @subid 444
+
+ @assert {
+
+ S == 0
+
+ }
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ imm32 = ThumbExpandImm(i:imm3:imm8)
+
+ }
+
+ @asm rsb.w ?reg_D reg_N imm32
+
+ }
+
+ @syntax {
+
+ @subid 445
+
+ @assert {
+
+ S == 1
+
+ }
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ imm32 = ThumbExpandImm(i:imm3:imm8)
+
+ }
+
+ @asm rsbs.w ?reg_D reg_N imm32
+
+ }
+
+}
+
+@encoding (A1) {
+
+ @word cond(4) 0 0 1 0 0 1 1 S(1) Rn(4) Rd(4) imm12(12)
+
+ @syntax {
+
+ @subid 446
+
+ @assert {
+
+ S == 0
+
+ }
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ imm32 = ARMExpandImm(imm12)
+
+ }
+
+ @asm rsb ?reg_D reg_N imm32
+
+ @rules {
+
+ check g_arm_instruction_set_cond(cond)
+
+ }
+
+ }
+
+ @syntax {
+
+ @subid 447
+
+ @assert {
+
+ S == 1
+
+ }
+
+ @conv {
+
+ reg_D = Register(Rd)
+ reg_N = Register(Rn)
+ imm32 = ARMExpandImm(imm12)
+
+ }
+
+ @asm rsbs ?reg_D reg_N imm32
+
+ @rules {
+
+ check g_arm_instruction_set_cond(cond)
+
+ }
+
+ }
+
+}
+