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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: SUB[.B] INSTRUCTION               */
/*---------------------------------------------------------------------------*/
/* Test the SUB[.B] instruction.                                             */
/*===========================================================================*/
 
 
.global main
 
main:
        /* -------------- TEST INSTRUCTION IN WORD MODE ------------------- */
 
        # Test SUB without Carry bit set
        mov     #0x0000, r2
        mov     #0x3333, r4
        mov     #0x8888, r5
        sub          r4, r5        ;# Substract r5-r4 (0x8888-0x3333=0x5555)
 
        # Test SUB with Carry bit set
        mov     #0x0001, r2
        mov     #0x5555, r4
        mov     #0x9999, r6
        sub          r4, r6        ;# Substract r6-r4 (0x9999-0x5555=0x4444)
 
 
        mov     #0x1000, r15
 
 
        /* -------------- TEST INSTRUCTION IN BYTE MODE ------------------- */
 
        # Test SUB.B without Carry bit set
        mov     #0x0000, r2
        mov     #0x3333, r4
        mov     #0x8888, r5
        sub.b        r4, r5        ;# Substract r5-r4 (0x0088-0x0033=0x0055)
 
        # Test SUB.B with Carry bit set
        mov     #0x0001, r2
        mov     #0x5555, r4
        mov     #0x9999, r6
        sub.b        r4, r6        ;# Substract 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        ;#
        sub          r4, r5        ;# Substract 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        ;#
        sub          r4, r5        ;# Substract 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        ;#
        sub          r4, r5        ;# Substract 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        ;#
        sub          r4, r5        ;# Substract 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        ;#
        sub          r4, r5        ;# Substract 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        ;#
        sub.b        r4, r5        ;# Substract 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        ;#
        sub.b        r4, r5        ;# Substract 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        ;#
        sub.b        r4, r5        ;# Substract 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        ;#
        sub.b        r4, r5        ;# Substract 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        ;#
        sub.b        r4, r5        ;# Substract r5-r4 (0x0080-0x0075=0x000b)
        mov     #0x4004, 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)    
.word end_of_test  ; Interrupt  1                      
.word end_of_test  ; Interrupt  2                      
.word end_of_test  ; Interrupt  3                      
.word end_of_test  ; Interrupt  4                      
.word end_of_test  ; Interrupt  5                      
.word end_of_test  ; Interrupt  6                      
.word end_of_test  ; Interrupt  7                      
.word end_of_test  ; Interrupt  8                      
.word end_of_test  ; Interrupt  9                      
.word end_of_test  ; Interrupt 10                      Watchdog timer
.word end_of_test  ; Interrupt 11                      
.word end_of_test  ; Interrupt 12                      
.word end_of_test  ; Interrupt 13                      
.word end_of_test  ; Interrupt 14                      NMI
.word main         ; Interrupt 15 (highest priority)   RESET

Line No.	Rev	Author	Line
1	2	olivier.gi	`/===========================================================================/`
2			`/* Copyright (C) 2001 Authors */`
3			`/* */`
4			`/* This source file may be used and distributed without restriction provided */`
5			`/* that this copyright statement is not removed from the file and that any */`
6			`/* derivative work contains the original copyright notice and the associated */`
7			`/* disclaimer. */`
8			`/* */`
9			`/* This source file is free software; you can redistribute it and/or modify */`
10			`/* it under the terms of the GNU Lesser General Public License as published */`
11			`/* by the Free Software Foundation; either version 2.1 of the License, or */`
12			`/* (at your option) any later version. */`
13			`/* */`
14			`/* This source is distributed in the hope that it will be useful, but WITHOUT*/`
15			`/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */`
16			`/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */`
17			`/* License for more details. */`
18			`/* */`
19			`/* You should have received a copy of the GNU Lesser General Public License */`
20			`/* along with this source; if not, write to the Free Software Foundation, */`
21			`/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */`
22			`/* */`
23			`/===========================================================================/`
24			`/* TWO-OPERAND ARITHMETIC: SUB[.B] INSTRUCTION */`
25			`/---------------------------------------------------------------------------/`
26			`/* Test the SUB[.B] instruction. */`
27			`/===========================================================================/`
28
29
30			`.global main`
31
32			`main:`
33			`/* -------------- TEST INSTRUCTION IN WORD MODE ------------------- */`
34
35			`# Test SUB without Carry bit set`
36			`mov #0x0000, r2`
37			`mov #0x3333, r4`
38			`mov #0x8888, r5`
39			`sub r4, r5 ;# Substract r5-r4 (0x8888-0x3333=0x5555)`
40
41			`# Test SUB with Carry bit set`
42			`mov #0x0001, r2`
43			`mov #0x5555, r4`
44			`mov #0x9999, r6`
45			`sub r4, r6 ;# Substract r6-r4 (0x9999-0x5555=0x4444)`
46
47
48			`mov #0x1000, r15`
49
50
51			`/* -------------- TEST INSTRUCTION IN BYTE MODE ------------------- */`
52
53			`# Test SUB.B without Carry bit set`
54			`mov #0x0000, r2`
55			`mov #0x3333, r4`
56			`mov #0x8888, r5`
57			`sub.b r4, r5 ;# Substract r5-r4 (0x0088-0x0033=0x0055)`
58
59			`# Test SUB.B with Carry bit set`
60			`mov #0x0001, r2`
61			`mov #0x5555, r4`
62			`mov #0x9999, r6`
63			`sub.b r4, r6 ;# Substract r6-r4 (0x0099-0x0055=0x0044)`
64
65
66			`mov #0x2000, r15`
67
68
69			`/* ------------------ TEST FLAGS IN WORD MODE ---------------------- */`
70
71			`mov #0x0000, r2 ;# V=0, N=1, Z=0, C=0`
72			`mov #0x0aaa, r4 ;#`
73			`mov #0x0666, r5 ;#`
74			`sub r4, r5 ;# Substract r5-r4 (0x0666-0x0aaa=0xfbbc)`
75			`mov #0x3000, r15`
76
77			`mov #0x0000, r2 ;# V=0, N=0, Z=0, C=1`
78			`mov #0x0444, r4 ;#`
79			`mov #0x0555, r5 ;#`
80			`sub r4, r5 ;# Substract r5-r4 (0x0555-0x0444=0x0111)`
81			`mov #0x3001, r15`
82
83			`mov #0x0000, r2 ;# V=0, N=0, Z=1, C=1`
84			`mov #0x0333, r4 ;#`
85			`mov #0x0333, r5 ;#`
86			`sub r4, r5 ;# Substract r5-r4 (0x0333-0x0333=0x0000)`
87			`mov #0x3002, r15`
88
89			`mov #0x0000, r2 ;# V=1, N=1, Z=0, C=0`
90			`mov #0x80ff, r4 ;#`
91			`mov #0x7ff0, r5 ;#`
92			`sub r4, r5 ;# Substract r5-r4 (0x7ff0-0x80ff=0xfef1)`
93			`mov #0x3003, r15`
94
95			`mov #0x0000, r2 ;# V=1, N=0, Z=0, C=1`
96			`mov #0x7f00, r4 ;#`
97			`mov #0x8000, r5 ;#`
98			`sub r4, r5 ;# Substract r5-r4 (0x8000-0x7f00=0x0100)`
99			`mov #0x3004, r15`
100
101
102			`/* ------------------ TEST FLAGS IN BYTE MODE --------------------- */`
103
104			`mov #0x0000, r2 ;# V=0, N=1, Z=0, C=0`
105			`mov #0x890a, r4 ;#`
106			`mov #0x5106, r5 ;#`
107			`sub.b r4, r5 ;# Substract r5-r4 (0x0006-0x000a=0x00fc)`
108			`mov #0x4000, r15`
109
110			`mov #0x0000, r2 ;# V=0, N=0, Z=0, C=1`
111			`mov #0xfa04, r4 ;#`
112			`mov #0x5305, r5 ;#`
113			`sub.b r4, r5 ;# Substract r5-r4 (0x0005-0x0004=0x0001)`
114			`mov #0x4001, r15`
115
116			`mov #0x0000, r2 ;# V=0, N=0, Z=1, C=1`
117			`mov #0xe603, r4 ;#`
118			`mov #0x8a03, r5 ;#`
119			`sub.b r4, r5 ;# Substract r5-r4 (0x0003-0x0003=0x0000)`
120			`mov #0x4002, r15`
121
122			`mov #0x0000, r2 ;# V=1, N=1, Z=0, C=0`
123			`mov #0x7387, r4 ;#`
124			`mov #0x817f, r5 ;#`
125			`sub.b r4, r5 ;# Substract r5-r4 (0x007f-0x0087=0x00f8)`
126			`mov #0x4003, r15`
127
128			`mov #0x0000, r2 ;# V=1, N=0, Z=0, C=1`
129			`mov #0x8175, r4 ;#`
130			`mov #0x5480, r5 ;#`
131			`sub.b r4, r5 ;# Substract r5-r4 (0x0080-0x0075=0x000b)`
132			`mov #0x4004, r15`
133
134
135			`/* ---------------------- END OF TEST --------------- */`
136			`mov #0x5000, r15`
137			`end_of_test:`
138			`nop`
139			`br #0xffff`
140
141
142
143			`/* ---------------------- INTERRUPT VECTORS --------------- */`
144
145			`.section .vectors, "a"`
146			`.word end_of_test ; Interrupt 0 (lowest priority)`
147			`.word end_of_test ; Interrupt 1`
148			`.word end_of_test ; Interrupt 2`
149			`.word end_of_test ; Interrupt 3`
150			`.word end_of_test ; Interrupt 4`
151			`.word end_of_test ; Interrupt 5`
152			`.word end_of_test ; Interrupt 6`
153			`.word end_of_test ; Interrupt 7`
154			`.word end_of_test ; Interrupt 8`
155			`.word end_of_test ; Interrupt 9`
156			`.word end_of_test ; Interrupt 10 Watchdog timer`
157			`.word end_of_test ; Interrupt 11`
158			`.word end_of_test ; Interrupt 12`
159			`.word end_of_test ; Interrupt 13`
160			`.word end_of_test ; Interrupt 14 NMI`
161			`.word main ; Interrupt 15 (highest priority) RESET`

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[/] [openmsp430/] [trunk/] [core/] [sim/] [rtl_sim/] [src/] [two-op_sub.s43] - Blame information for rev 2