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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 SUB (SP minus immediate)
@id 224
@desc {
This instruction subtracts an immediate value from the SP value, and writes the result to the destination register.
}
@encoding (t1) {
@half 1 0 1 1 0 0 0 0 1 imm7(7)
@syntax {
@subid 687
@conv {
reg_D = Register(13)
reg_SP = Register(13)
imm32 = ZeroExtend(imm7:'00', 32)
}
@asm sub ?reg_D reg_SP imm32
}
}
@encoding (T2) {
@word 1 1 1 1 0 i(1) 0 1 1 0 1 S(1) 1 1 0 1 0 imm3(3) Rd(4) imm8(8)
@syntax {
@subid 688
@assert {
S == 0
}
@conv {
reg_D = Register(Rd)
reg_SP = Register(13)
imm32 = ThumbExpandImm(i:imm3:imm8)
}
@asm sub.w ?reg_D reg_SP imm32
}
@syntax {
@subid 689
@assert {
S == 1
}
@conv {
reg_D = Register(Rd)
reg_SP = Register(13)
imm32 = ThumbExpandImm(i:imm3:imm8)
}
@asm subs.w ?reg_D reg_SP imm32
}
}
@encoding (T3) {
@word 1 1 1 1 0 i(1) 1 0 1 0 1 0 1 1 0 1 0 imm3(3) Rd(4) imm8(8)
@syntax {
@subid 690
@conv {
reg_D = Register(Rd)
reg_SP = Register(13)
imm32 = ZeroExtend(i:imm3:imm8, 32)
}
@asm subw ?reg_D reg_SP imm32
}
}
@encoding (A1) {
@word cond(4) 0 0 1 0 0 1 0 S(1) 1 1 0 1 Rd(4) imm12(12)
@syntax {
@subid 691
@assert {
S == 0
}
@conv {
reg_D = Register(Rd)
reg_SP = Register(13)
imm32 = ARMExpandImm(imm12)
}
@asm sub ?reg_D reg_SP imm32
@rules {
check g_arm_instruction_set_cond(cond)
}
}
@syntax {
@subid 692
@assert {
S == 1
}
@conv {
reg_D = Register(Rd)
reg_SP = Register(13)
imm32 = ARMExpandImm(imm12)
}
@asm subs ?reg_D reg_SP imm32
@rules {
check g_arm_instruction_set_cond(cond)
}
}
}
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