1 | /*****************************************************************************/ |
2 | /* */ |
3 | /* alignment.h */ |
4 | /* */ |
5 | /* Address aligment */ |
6 | /* */ |
7 | /* */ |
8 | /* */ |
9 | /* (C) 2011, Ullrich von Bassewitz */ |
10 | /* Roemerstrasse 52 */ |
11 | /* 70794 Filderstadt */ |
12 | /* EMail: uz@cc65.org */ |
13 | /* */ |
14 | /* */ |
15 | /* This software is provided 'as-is', without any expressed or implied */ |
16 | /* warranty. In no event will the authors be held liable for any damages */ |
17 | /* arising from the use of this software. */ |
18 | /* */ |
19 | /* Permission is granted to anyone to use this software for any purpose, */ |
20 | /* including commercial applications, and to alter it and redistribute it */ |
21 | /* freely, subject to the following restrictions: */ |
22 | /* */ |
23 | /* 1. The origin of this software must not be misrepresented; you must not */ |
24 | /* claim that you wrote the original software. If you use this software */ |
25 | /* in a product, an acknowledgment in the product documentation would be */ |
26 | /* appreciated but is not required. */ |
27 | /* 2. Altered source versions must be plainly marked as such, and must not */ |
28 | /* be misrepresented as being the original software. */ |
29 | /* 3. This notice may not be removed or altered from any source */ |
30 | /* distribution. */ |
31 | /* */ |
32 | /*****************************************************************************/ |
33 | |
34 | |
35 | |
36 | #ifndef ALIGNMENT_H |
37 | #define ALIGNMENT_H |
38 | |
39 | |
40 | |
41 | /* common */ |
42 | #include "inline.h" |
43 | |
44 | |
45 | |
46 | /*****************************************************************************/ |
47 | /* Data */ |
48 | /*****************************************************************************/ |
49 | |
50 | |
51 | |
52 | /* Maximum possible alignment. Beware: To increase the possible alignment it |
53 | ** is not enough to bump this value. Check the code inside. |
54 | */ |
55 | #define MAX_ALIGNMENT 0x10000UL |
56 | |
57 | /* The following value marks what is considered a "large alignment" and worth |
58 | ** a warning if not suppressed. |
59 | */ |
60 | #define LARGE_ALIGNMENT 0x101UL |
61 | |
62 | |
63 | |
64 | /*****************************************************************************/ |
65 | /* Code */ |
66 | /*****************************************************************************/ |
67 | |
68 | |
69 | |
70 | unsigned long LeastCommonMultiple (unsigned long Left, unsigned long Right); |
71 | /* Calculate the least common multiple of two numbers and return |
72 | ** the result. |
73 | */ |
74 | |
75 | unsigned long AlignAddr (unsigned long Addr, unsigned long Alignment); |
76 | /* Align an address to the given alignment */ |
77 | |
78 | unsigned long AlignCount (unsigned long Addr, unsigned long Alignment); |
79 | /* Calculate how many bytes must be inserted to align Addr to Alignment */ |
80 | |
81 | |
82 | |
83 | /* End of alignment.h */ |
84 | |
85 | #endif |
86 | |