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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 MSR (immediate)
@id 398
@desc {
Move immediate value to Special register moves selected bits of an immediate value to the CPSR or the SPSR of the current mode. MSR (immediate) is UNPREDICTABLE if: • In Non-debug state, it is attempting to update the CPSR, and that update would change to a mode that is not permitted in the context in which the instruction is executed, see Restrictions on updates to the CPSR.M field on page B9-1970. • In Debug state, it is attempting an update to the CPSR with a <fields> value that is not <fsxc>. See Behavior of MRS and MSR instructions that access the CPSR in Debug state on page C5-2097. An MSR (immediate) executed in User mode: • is UNPREDICTABLE if it attempts to update the SPSR • otherwise, does not update any CPSR field that is accessible only at PL1 or higher, Note MSR (immediate) on page A8-498 describes the valid application level uses of the MSR (immediate) instruction. An MSR (immediate) executed in System mode is UNPREDICTABLE if it attempts to update the SPSR.
}
@encoding (A1) {
@word cond(4) 0 0 1 1 0 R(1) 1 0 mask(4) 1 1 1 1 imm12(12)
@syntax {
@subid 3808
@conv {
spec_reg = SpecRegFromMask(mask)
imm32 = ARMExpandImm(imm12)
}
@asm msr spec_reg imm32
@rules {
check g_arm_instruction_set_cond(cond)
}
}
}
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