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[/] [openmsp430/] [trunk/] [core/] [sim/] [rtl_sim/] [src/] [two-op_cmp.s43] - Rev 155
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/*===========================================================================*/
/* Copyright (C) 2001 Authors */
/* */
/* 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, write to the Free Software Foundation, */
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
/* */
/*===========================================================================*/
/* TWO-OPERAND ARITHMETIC: CMP[.B] INSTRUCTION */
/*---------------------------------------------------------------------------*/
/* Test the CMP[.B] instruction. */
/* */
/* Author(s): */
/* - Olivier Girard, olgirard@gmail.com */
/* */
/*---------------------------------------------------------------------------*/
/* $Rev: 101 $ */
/* $LastChangedBy: olivier.girard $ */
/* $LastChangedDate: 2011-03-04 21:17:50 +0100 (Fri, 04 Mar 2011) $ */
/*===========================================================================*/
.global main
main:
/* -------------- TEST INSTRUCTION IN WORD MODE ------------------- */
# Test CMP without Carry bit set
mov #0x0000, r2
mov #0x3333, r4
mov #0x8888, r5
cmp r4, r5 ;# Compare r5-r4 (0x8888-0x3333=0x5555)
# Test CMP with Carry bit set
mov #0x0001, r2
mov #0x5555, r4
mov #0x9999, r6
cmp r4, r6 ;# Compare r6-r4 (0x9999-0x5555=0x4444)
mov #0x1000, r15
/* -------------- TEST INSTRUCTION IN BYTE MODE ------------------- */
# Test CMP.B without Carry bit set
mov #0x0000, r2
mov #0x3333, r4
mov #0x8888, r5
cmp.b r4, r5 ;# Compare r5-r4 (0x0088-0x0033=0x0055)
# Test CMP.B with Carry bit set
mov #0x0001, r2
mov #0x5555, r4
mov #0x9999, r6
cmp.b r4, r6 ;# Compare r6-r4 (0x0099-0x0055=0x0044)
mov #0x2000, r15
/* ------------------ TEST FLAGS IN WORD MODE ---------------------- */
mov #0x0000, r2 ;# V=0, N=1, Z=0, C=0
mov #0x0aaa, r4 ;#
mov #0x0666, r5 ;#
cmp r4, r5 ;# Compare r5-r4 (0x0666-0x0aaa=0xfbbc)
mov #0x3000, r15
mov #0x0000, r2 ;# V=0, N=0, Z=0, C=1
mov #0x0444, r4 ;#
mov #0x0555, r5 ;#
cmp r4, r5 ;# Compare r5-r4 (0x0555-0x0444=0x0111)
mov #0x3001, r15
mov #0x0000, r2 ;# V=0, N=0, Z=1, C=1
mov #0x0333, r4 ;#
mov #0x0333, r5 ;#
cmp r4, r5 ;# Compare r5-r4 (0x0333-0x0333=0x0000)
mov #0x3002, r15
mov #0x0000, r2 ;# V=1, N=1, Z=0, C=0
mov #0x80ff, r4 ;#
mov #0x7ff0, r5 ;#
cmp r4, r5 ;# Compare r5-r4 (0x7ff0-0x80ff=0xfef1)
mov #0x3003, r15
mov #0x0000, r2 ;# V=1, N=0, Z=0, C=1
mov #0x7f00, r4 ;#
mov #0x8000, r5 ;#
cmp r4, r5 ;# Compare r5-r4 (0x8000-0x7f00=0x0100)
mov #0x3004, r15
/* ------------------ TEST FLAGS IN BYTE MODE --------------------- */
mov #0x0000, r2 ;# V=0, N=1, Z=0, C=0
mov #0x890a, r4 ;#
mov #0x5106, r5 ;#
cmp.b r4, r5 ;# Compare r5-r4 (0x0006-0x000a=0x00fc)
mov #0x4000, r15
mov #0x0000, r2 ;# V=0, N=0, Z=0, C=1
mov #0xfa04, r4 ;#
mov #0x5305, r5 ;#
cmp.b r4, r5 ;# Compare r5-r4 (0x0005-0x0004=0x0001)
mov #0x4001, r15
mov #0x0000, r2 ;# V=0, N=0, Z=1, C=1
mov #0xe603, r4 ;#
mov #0x8a03, r5 ;#
cmp.b r4, r5 ;# Compare r5-r4 (0x0003-0x0003=0x0000)
mov #0x4002, r15
mov #0x0000, r2 ;# V=1, N=1, Z=0, C=0
mov #0x7387, r4 ;#
mov #0x817f, r5 ;#
cmp.b r4, r5 ;# Compare r5-r4 (0x007f-0x0087=0x00f8)
mov #0x4003, r15
mov #0x0000, r2 ;# V=1, N=0, Z=0, C=1
mov #0x8175, r4 ;#
mov #0x5480, r5 ;#
cmp.b r4, r5 ;# Compare r5-r4 (0x0080-0x0075=0x000b)
mov #0x4004, r15
/* mmihai cmp.b bug */
mov #0x0210, r5
clr.b 0(r5)
mov #0x1, r4
cmp.b r4, 0(r5)
jz end_of_test ;# should not happen
mov #0x4100, r15
/* ---------------------- END OF TEST --------------- */
mov #0x5000, r15
end_of_test:
nop
br #0xffff
/* ---------------------- INTERRUPT VECTORS --------------- */
.section .vectors, "a"
.word end_of_test ; Interrupt 0 (lowest priority) <unused>
.word end_of_test ; Interrupt 1 <unused>
.word end_of_test ; Interrupt 2 <unused>
.word end_of_test ; Interrupt 3 <unused>
.word end_of_test ; Interrupt 4 <unused>
.word end_of_test ; Interrupt 5 <unused>
.word end_of_test ; Interrupt 6 <unused>
.word end_of_test ; Interrupt 7 <unused>
.word end_of_test ; Interrupt 8 <unused>
.word end_of_test ; Interrupt 9 <unused>
.word end_of_test ; Interrupt 10 Watchdog timer
.word end_of_test ; Interrupt 11 <unused>
.word end_of_test ; Interrupt 12 <unused>
.word end_of_test ; Interrupt 13 <unused>
.word end_of_test ; Interrupt 14 NMI
.word main ; Interrupt 15 (highest priority) RESET
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