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[/] [amber/] [trunk/] [hw/] [tests/] [barrel_shift_rs.S] - Rev 2
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/*****************************************************************// //// Amber 2 Core Instruction Test //// //// This file is part of the Amber project //// http://www.opencores.org/project,amber //// //// Description //// Test Rs barrel shifts //// //// Author(s): //// - Conor Santifort, csantifort.amber@gmail.com //// ////////////////////////////////////////////////////////////////////// //// Copyright (C) 2010 Authors and OPENCORES.ORG //// //// This source file may be used and distributed without //// restriction provided that this copyright statement is not //// removed from the file and that any derivative work contains //// the original copyright notice and the associated disclaimer. //// //// This source file is free software; you can redistribute it //// and/or modify it under the terms of the GNU Lesser General //// Public License as published by the Free Software Foundation; //// either version 2.1 of the License, or (at your option) any //// later version. //// //// This source 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 Lesser General Public License for more //// details. //// //// You should have received a copy of the GNU Lesser General //// Public License along with this source; if not, download it //// from http://www.opencores.org/lgpl.shtml //// //*****************************************************************/#include "amber_registers.h".section .text.globl mainmain:@ ------------------------------------------------@ lsr@ test that shift of 0 leaves Rm unchanged@ ------------------------------------------------mov r1, #8mov r3, #0mov r1, r1, lsr r3cmp r1, #8movne r10, #10bne testfail@ ------------------------------------------------@ lsr@ test that shift of > 32 sets Rm and Cout to 0@ ------------------------------------------------@ set C Flag to 1mov r4, pcorr r4, r4, #0x20000000teqp pc, r4@ check that the C Flag to 1mov r7, pcands r7, r7, #0x20000000moveq r10, #20beq testfailmov r1, #0xC0000003mov r3, #255movs r1, r1, lsr r3@ check that the carry flag has been cleared by the mov lsr operationmov r4, pcands r4, r4, #0x20000000movne r10, #30bne testfail@ ------------------------------------------------@ ------------------------------------------------b testpasstestfail:ldr r11, AdrTestStatusstr r10, [r11]b testfailtestpass:ldr r11, AdrTestStatusmov r10, #17str r10, [r11]b testpass/* Write 17 to this address to generate a Test Passed message */AdrTestStatus: .word ADR_AMBER_TEST_STATUS/* ========================================================================= *//* ========================================================================= */