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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 LDC, LDC2 (literal)
@id 50
@desc {
Load Coprocessor loads memory data from a sequence of consecutive memory addresses to a coprocessor. If no coprocessor can execute the instruction, an Undefined Instruction exception is generated. This is a generic coprocessor instruction. Some of the fields have no functionality defined by the architecture and are free for use by the coprocessor instruction set designer. These are the D bit, the CRd field, and in the Unindexed addressing mode only, the imm8 field. However, coprocessors CP8-CP15 are reserved for use by ARM, and this manual defines the valid LDC and LDC2 instructions when coproc is in the range p8-p15. For more information see Coprocessor support on page A2-94. In an implementation that includes the Virtualization Extensions, the permitted LDC access to a system control register can be trapped to Hyp mode, meaning that an attempt to execute an LDC instruction in a Non-secure mode other than Hyp mode, that would be permitted in the absence of the Hyp trap controls, generates a Hyp Trap exception. For more information, see Trapping general CP14 accesses to debug registers on page B1-1260. Note For simplicity, the LDC pseudocode does not show this possible trap to Hyp mode.
}
@encoding (T1) {
@word 1 1 1 0 1 1 0 P(1) U(1) D(1) W(1) 1 1 1 1 1 CRd(4) coproc(4) imm8(8)
@syntax {
@subid 155
@assert {
P == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
imm32 = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd imm32
}
}
@encoding (T2) {
@word 1 1 1 1 1 1 0 P(1) U(1) D(1) W(1) 1 1 1 1 1 CRd(4) coproc(4) imm8(8)
@syntax {
@subid 156
@assert {
P == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
imm32 = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd imm32
}
}
@encoding (A1) {
@word 1 1 1 0 1 1 0 P(1) U(1) D(1) W(1) 1 1 1 1 1 CRd(4) coproc(4) imm8(8)
@syntax {
@subid 157
@assert {
P == 0
U == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
reg_PC = Register(15)
maccess = MemAccessOffset(reg_PC, NULL)
option = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd maccess option
}
@syntax {
@subid 158
@assert {
P == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
imm32 = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd imm32
}
}
@encoding (A2) {
@word 1 1 1 1 1 1 0 P(1) U(1) D(1) W(1) 1 1 1 1 1 CRd(4) coproc(4) imm8(8)
@syntax {
@subid 159
@assert {
P == 0
U == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
reg_PC = Register(15)
maccess = MemAccessOffset(reg_PC, NULL)
option = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd maccess option
}
@syntax {
@subid 160
@assert {
P == 1
W == 0
}
@conv {
cp = CoProcessor(coproc)
direct_CRd = UInt(CRd)
imm32 = ZeroExtend(imm8:'00', 32)
}
@asm ldc cp direct_CRd imm32
}
}
|
