878ddf1f |
1 | /** @file\r |
2 | Leaf math worker functions that require 64-bit arithmetic support from the\r |
3 | compiler.\r |
4 | \r |
5 | Copyright (c) 2006, Intel Corporation<BR>\r |
6 | All rights reserved. This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r |
8 | which accompanies this distribution. The full text of the license may be found at\r |
9 | http://opensource.org/licenses/bsd-license.php\r |
10 | \r |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
13 | \r |
14 | Module Name: Math64.c\r |
15 | \r |
16 | **/\r |
17 | \r |
18 | UINT64\r |
19 | EFIAPI\r |
20 | InternalMathLShiftU64 (\r |
21 | IN UINT64 Operand,\r |
22 | IN UINTN Count\r |
23 | )\r |
24 | {\r |
25 | return Operand << Count;\r |
26 | }\r |
27 | \r |
28 | UINT64\r |
29 | EFIAPI\r |
30 | InternalMathRShiftU64 (\r |
31 | IN UINT64 Operand,\r |
32 | IN UINTN Count\r |
33 | )\r |
34 | {\r |
35 | return Operand >> Count;\r |
36 | }\r |
37 | \r |
38 | UINT64\r |
39 | EFIAPI\r |
40 | InternalMathARShiftU64 (\r |
41 | IN UINT64 Operand,\r |
42 | IN UINTN Count\r |
43 | )\r |
44 | {\r |
45 | //\r |
46 | // Test if this compiler supports arithmetic shift\r |
47 | //\r |
48 | if ((((-1) << (sizeof (-1) * 8 - 1)) >> (sizeof (-1) * 8 - 1)) == -1) {\r |
49 | //\r |
50 | // Arithmetic shift is supported\r |
51 | //\r |
52 | return (UINT64)((INT64)Operand >> Count);\r |
53 | }\r |
54 | \r |
55 | //\r |
56 | // Arithmetic is not supported\r |
57 | //\r |
58 | return (Operand >> Count) |\r |
59 | ((INTN)Operand < 0 ? ~((UINTN)-1 >> Count) : 0);\r |
60 | }\r |
61 | \r |
62 | UINT64\r |
63 | EFIAPI\r |
64 | InternalMathLRotU64 (\r |
65 | IN UINT64 Operand,\r |
66 | IN UINTN Count\r |
67 | )\r |
68 | {\r |
69 | return (Operand << Count) | (Operand >> (64 - Count));\r |
70 | }\r |
71 | \r |
72 | UINT64\r |
73 | EFIAPI\r |
74 | InternalMathRRotU64 (\r |
75 | IN UINT64 Operand,\r |
76 | IN UINTN Count\r |
77 | )\r |
78 | {\r |
79 | return (Operand >> Count) | (Operand << (64 - Count));\r |
80 | }\r |
81 | \r |
82 | UINT64\r |
83 | EFIAPI\r |
84 | InternalMathSwapBytes64 (\r |
85 | IN UINT64 Operand\r |
86 | )\r |
87 | {\r |
88 | return (UINT64)(\r |
89 | ((UINT64)SwapBytes32 ((UINT32)Operand) << 32) |\r |
90 | ((UINT64)SwapBytes32 ((UINT32)(Operand >> 32)))\r |
91 | );\r |
92 | }\r |
93 | \r |
94 | UINT64\r |
95 | EFIAPI\r |
96 | InternalMathMultU64x32 (\r |
97 | IN UINT64 Multiplicand,\r |
98 | IN UINT32 Multiplier\r |
99 | )\r |
100 | {\r |
101 | return Multiplicand * Multiplier;\r |
102 | }\r |
103 | \r |
104 | UINT64\r |
105 | EFIAPI\r |
106 | InternalMathMultU64x64 (\r |
107 | IN UINT64 Multiplicand,\r |
108 | IN UINT64 Multiplier\r |
109 | )\r |
110 | {\r |
111 | return Multiplicand * Multiplier;\r |
112 | }\r |
113 | \r |
114 | UINT64\r |
115 | EFIAPI\r |
116 | InternalMathDivU64x32 (\r |
117 | IN UINT64 Dividend,\r |
118 | IN UINT32 Divisor\r |
119 | )\r |
120 | {\r |
121 | return Dividend / Divisor;\r |
122 | }\r |
123 | \r |
124 | UINT64\r |
125 | EFIAPI\r |
126 | InternalMathModU64x32 (\r |
127 | IN UINT64 Dividend,\r |
128 | IN UINT32 Divisor\r |
129 | )\r |
130 | {\r |
131 | return Dividend % Divisor;\r |
132 | }\r |
133 | \r |
134 | UINT64\r |
135 | EFIAPI\r |
136 | InternalMathDivRemU64x32 (\r |
137 | IN UINT64 Dividend,\r |
138 | IN UINT32 Divisor,\r |
139 | OUT UINT32 *Remainder\r |
140 | )\r |
141 | {\r |
142 | if (Remainder != NULL) {\r |
143 | *Remainder = (UINT32)(Dividend % Divisor);\r |
144 | }\r |
145 | return Dividend / Divisor;\r |
146 | }\r |
147 | \r |
148 | UINT64\r |
149 | EFIAPI\r |
150 | InternalMathDivRemU64x64 (\r |
151 | IN UINT64 Dividend,\r |
152 | IN UINT64 Divisor,\r |
153 | OUT UINT64 *Remainder\r |
154 | )\r |
155 | {\r |
156 | if (Remainder != NULL) {\r |
157 | *Remainder = Dividend % Divisor;\r |
158 | }\r |
159 | return Dividend / Divisor;\r |
160 | }\r |
161 | \r |
162 | INT64\r |
163 | EFIAPI\r |
164 | InternalMathDivRemS64x64 (\r |
165 | IN INT64 Dividend,\r |
166 | IN INT64 Divisor,\r |
167 | OUT INT64 *Remainder\r |
168 | )\r |
169 | {\r |
170 | if (Remainder != NULL) {\r |
171 | *Remainder = Dividend % Divisor;\r |
172 | }\r |
173 | return Dividend / Divisor;\r |
174 | }\r |