/* 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


@title LSR (immediate)

@id 95

@desc {

	Logical Shift Right (immediate) shifts a register value right by an immediate number of bits, shifting in zeros, and writes the result to the destination register. It can optionally update the condition flags based on the result.

}

@encoding (t1) {

	@half 0 0 0 0 1 imm5(5) Rm(3) Rd(3)

	@syntax {

		@conv {

			reg_D = Register(Rd)
			reg_M = Register(Rm)
			shift_n = DecodeImmShiftAmount('01', imm5)

		}

		@asm lsr ?reg_D reg_M shift_n

	}

}

@encoding (T2) {

	@word 1 1 1 0 1 0 1 0 0 1 0 S(1) 1 1 1 1 0 imm3(3) Rd(4) imm2(2) 0 1 Rm(4)

	@syntax {

		@assert {

			S == 0

		}

		@conv {

			reg_D = Register(Rd)
			reg_M = Register(Rm)
			shift_n = DecodeImmShiftAmount('01', imm3:imm2)

		}

		@asm lsr.w ?reg_D reg_M shift_n

	}

	@syntax {

		@assert {

			S == 1

		}

		@conv {

			reg_D = Register(Rd)
			reg_M = Register(Rm)
			shift_n = DecodeImmShiftAmount('01', imm3:imm2)

		}

		@asm lsrs.w ?reg_D reg_M shift_n

	}

}

@encoding (A1) {

	@word cond(4) 0 0 0 1 1 0 1 S(1) 0 0 0 0 Rd(4) imm5(5) 0 1 0 Rm(4)

	@syntax {

		@assert {

			S == 0

		}

		@conv {

			reg_D = Register(Rd)
			reg_M = Register(Rm)
			shift_n = DecodeImmShiftAmount('01', imm5)

		}

		@asm lsr ?reg_D reg_M shift_n

		@rules {

			check g_arm_instruction_set_cond(cond)

		}

	}

	@syntax {

		@assert {

			S == 1

		}

		@conv {

			reg_D = Register(Rd)
			reg_M = Register(Rm)
			shift_n = DecodeImmShiftAmount('01', imm5)

		}

		@asm lsrs ?reg_D reg_M shift_n

		@rules {

			check g_arm_instruction_set_cond(cond)

		}

	}

}