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1 | /** @file\r |
2 | Macros to work around lack of Apple support for LDR register, =expr\r | |
3 | \r | |
d6ebcab7 | 4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
2ef2b01e | 5 | \r |
d6ebcab7 | 6 | This program and the accompanying materials\r |
2ef2b01e A |
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 | **/\r | |
15 | \r | |
16 | \r | |
17 | #ifndef __MACRO_IO_LIB_H__\r | |
18 | #define __MACRO_IO_LIB_H__\r | |
19 | \r | |
20 | #if defined(__APPLE__)\r | |
21 | \r | |
22 | //\r | |
23 | // ldr reg, =expr does not work with current Apple tool chain. So do the work our selves\r | |
24 | //\r | |
25 | \r | |
26 | // returns _Data in R0 and _Address in R1\r | |
27 | #define MmioWrite32(_Address, _Data) \\r | |
28 | ldr r1, [pc, #8] ; \\r | |
29 | ldr r0, [pc, #8] ; \\r | |
30 | str r0, [r1] ; \\r | |
31 | b 1f ; \\r | |
32 | .long (_Address) ; \\r | |
33 | .long (_Data) ; \\r | |
34 | 1:\r | |
35 | \r | |
36 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
37 | #define MmioOr32(_Address, _OrData) \\r | |
38 | ldr r1, [pc, #16] ; \\r | |
39 | ldr r2, [pc, #16] ; \\r | |
40 | ldr r0, [r1] ; \\r | |
41 | orr r0, r0, r2 ; \\r | |
42 | str r0, [r1] ; \\r | |
43 | b 1f ; \\r | |
44 | .long (_Address) ; \\r | |
45 | .long (_OrData) ; \\r | |
46 | 1:\r | |
47 | \r | |
48 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
49 | #define MmioAnd32(_Address, _AndData) \\r | |
50 | ldr r1, [pc, #16] ; \\r | |
51 | ldr r2, [pc, #16] ; \\r | |
52 | ldr r0, [r1] ; \\r | |
53 | and r0, r0, r2 ; \\r | |
54 | str r0, [r1] ; \\r | |
55 | b 1f ; \\r | |
56 | .long (_Address) ; \\r | |
57 | .long (_AndData) ; \\r | |
58 | 1:\r | |
59 | \r | |
60 | // returns result in R0, _Address in R1, and _OrData in r2\r | |
61 | #define MmioAndThenOr32(_Address, _AndData, _OrData) \\r | |
62 | ldr r1, [pc, #24] ; \\r | |
63 | ldr r0, [r1] ; \\r | |
64 | ldr r2, [pc, #20] ; \\r | |
65 | and r0, r0, r2 ; \\r | |
66 | ldr r2, [pc, #16] ; \\r | |
67 | orr r0, r0, r2 ; \\r | |
68 | str r0, [r1] ; \\r | |
69 | b 1f ; \\r | |
70 | .long (_Address) ; \\r | |
71 | .long (_AndData) ; \\r | |
72 | .long (_OrData) ; \\r | |
73 | 1:\r | |
74 | \r | |
75 | // returns _Data in _Reg and _Address in R1\r | |
76 | #define MmioWriteFromReg32(_Address, _Reg) \\r | |
77 | ldr r1, [pc, #4] ; \\r | |
78 | str _Reg, [r1] ; \\r | |
79 | b 1f ; \\r | |
80 | .long (_Address) ; \\r | |
81 | 1:\r | |
82 | \r | |
83 | \r | |
84 | // returns _Data in R0 and _Address in R1\r | |
85 | #define MmioRead32(_Address) \\r | |
86 | ldr r1, [pc, #4] ; \\r | |
87 | ldr r0, [r1] ; \\r | |
88 | b 1f ; \\r | |
89 | .long (_Address) ; \\r | |
90 | 1:\r | |
91 | \r | |
92 | // returns _Data in Reg and _Address in R1\r | |
93 | #define MmioReadToReg32(_Address, _Reg) \\r | |
94 | ldr r1, [pc, #4] ; \\r | |
95 | ldr _Reg, [r1] ; \\r | |
96 | b 1f ; \\r | |
97 | .long (_Address) ; \\r | |
98 | 1:\r | |
99 | \r | |
100 | \r | |
101 | // load R0 with _Data\r | |
102 | #define LoadConstant(_Data) \\r | |
103 | ldr r0, [pc, #0] ; \\r | |
104 | b 1f ; \\r | |
105 | .long (_Data) ; \\r | |
106 | 1:\r | |
107 | \r | |
108 | // load _Reg with _Data\r | |
109 | #define LoadConstantToReg(_Data, _Reg) \\r | |
110 | ldr _Reg, [pc, #0] ; \\r | |
111 | b 1f ; \\r | |
112 | .long (_Data) ; \\r | |
113 | 1:\r | |
114 | \r | |
115 | // load _Reg with _Data if eq\r | |
116 | #define LoadConstantToRegIfEq(_Data, _Reg) \\r | |
117 | ldreq _Reg, [pc, #0] ; \\r | |
118 | b 1f ; \\r | |
119 | .long (_Data) ; \\r | |
120 | 1:\r | |
121 | \r | |
122 | \r | |
123 | #elif defined (__GNUC__)\r | |
124 | \r | |
125 | #define MmioWrite32(Address, Data) \\r | |
126 | ldr r1, =Address ; \\r | |
127 | ldr r0, =Data ; \\r | |
128 | str r0, [r1]\r | |
129 | \r | |
130 | #define MmioOr32(Address, OrData) \\r | |
131 | ldr r1, =Address ; \\r | |
132 | ldr r2, =OrData ; \\r | |
133 | ldr r0, [r1] ; \\r | |
134 | orr r0, r0, r2 ; \\r | |
135 | str r0, [r1]\r | |
136 | \r | |
137 | #define MmioAnd32(Address, AndData) \\r | |
138 | ldr r1, =Address ; \\r | |
139 | ldr r2, =AndData ; \\r | |
140 | ldr r0, [r1] ; \\r | |
141 | and r0, r0, r2 ; \\r | |
142 | str r0, [r1]\r | |
143 | \r | |
144 | #define MmioAndThenOr32(Address, AndData, OrData) \\r | |
145 | ldr r1, =Address ; \\r | |
146 | ldr r0, [r1] ; \\r | |
147 | ldr r2, =AndData ; \\r | |
148 | and r0, r0, r2 ; \\r | |
149 | ldr r2, =OrData ; \\r | |
150 | orr r0, r0, r2 ; \\r | |
151 | str r0, [r1] \r | |
152 | \r | |
153 | #define MmioWriteFromReg32(Address, Reg) \\r | |
154 | ldr r1, =Address ; \\r | |
155 | str Reg, [r1]\r | |
156 | \r | |
157 | #define MmioRead32(Address) \\r | |
158 | ldr r1, =Address ; \\r | |
159 | ldr r0, [r1]\r | |
160 | \r | |
161 | #define MmioReadToReg32(Address, Reg) \\r | |
162 | ldr r1, =Address ; \\r | |
163 | ldr Reg, [r1]\r | |
164 | \r | |
165 | #define LoadConstant(Data) \\r | |
166 | ldr r0, =Data\r | |
167 | \r | |
168 | #define LoadConstantToReg(Data, Reg) \\r | |
169 | ldr Reg, =Data\r | |
170 | \r | |
171 | #else\r | |
172 | \r | |
173 | //\r | |
174 | // Use ARM assembly macros, form armasam \r | |
175 | //\r | |
176 | // Less magic in the macros if ldr reg, =expr works\r | |
177 | //\r | |
178 | \r | |
179 | // returns _Data in R0 and _Address in R1\r | |
180 | \r | |
181 | \r | |
182 | \r | |
183 | #define MmioWrite32(Address, Data) MmioWrite32Macro Address, Data\r | |
184 | \r | |
185 | \r | |
186 | \r | |
187 | \r | |
188 | // returns Data in R0 and Address in R1, and OrData in r2\r | |
189 | #define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData\r | |
190 | \r | |
191 | \r | |
192 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
193 | \r | |
194 | \r | |
195 | #define MmioAnd32(Address, AndData) MmioAnd32Macro Address, AndData\r | |
196 | \r | |
197 | // returns result in R0, _Address in R1, and _OrData in r2\r | |
198 | \r | |
199 | \r | |
200 | #define MmioAndThenOr32(Address, AndData, OrData) MmioAndThenOr32Macro Address, AndData, OrData\r | |
201 | \r | |
202 | \r | |
203 | // returns _Data in _Reg and _Address in R1\r | |
204 | \r | |
205 | \r | |
206 | #define MmioWriteFromReg32(Address, Reg) MmioWriteFromReg32Macro Address, Reg\r | |
207 | \r | |
208 | // returns _Data in R0 and _Address in R1\r | |
209 | \r | |
210 | \r | |
211 | #define MmioRead32(Address) MmioRead32Macro Address\r | |
212 | \r | |
213 | // returns _Data in Reg and _Address in R1\r | |
214 | \r | |
215 | \r | |
216 | #define MmioReadToReg32(Address, Reg) MmioReadToReg32Macro Address, Reg\r | |
217 | \r | |
218 | \r | |
219 | // load R0 with _Data\r | |
220 | \r | |
221 | \r | |
222 | #define LoadConstant(Data) LoadConstantMacro Data\r | |
223 | \r | |
224 | // load _Reg with _Data\r | |
225 | \r | |
226 | \r | |
227 | #define LoadConstantToReg(Data, Reg) LoadConstantToRegMacro Data, Reg\r | |
228 | \r | |
229 | // conditional load testing eq flag\r | |
230 | #define LoadConstantToRegIfEq(Data, Reg) LoadConstantToRegIfEqMacro Data, Reg\r | |
231 | \r | |
232 | \r | |
233 | #endif\r | |
234 | \r | |
235 | \r | |
236 | #endif\r |