]>
Commit | Line | Data |
---|---|---|
1 | /** @file\r | |
2 | Macros to work around lack of Apple support for LDR register, =expr\r | |
3 | \r | |
4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
5 | Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | \r | |
18 | #ifndef __MACRO_IO_LIB_H__\r | |
19 | #define __MACRO_IO_LIB_H__\r | |
20 | \r | |
21 | #if defined(__APPLE__)\r | |
22 | \r | |
23 | //\r | |
24 | // ldr reg, =expr does not work with current Apple tool chain. So do the work our selves\r | |
25 | //\r | |
26 | \r | |
27 | // returns _Data in R0 and _Address in R1\r | |
28 | #define MmioWrite32(_Address, _Data) \\r | |
29 | ldr r1, [pc, #8] ; \\r | |
30 | ldr r0, [pc, #8] ; \\r | |
31 | str r0, [r1] ; \\r | |
32 | b 1f ; \\r | |
33 | .long (_Address) ; \\r | |
34 | .long (_Data) ; \\r | |
35 | 1:\r | |
36 | \r | |
37 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
38 | #define MmioOr32(_Address, _OrData) \\r | |
39 | ldr r1, [pc, #16] ; \\r | |
40 | ldr r2, [pc, #16] ; \\r | |
41 | ldr r0, [r1] ; \\r | |
42 | orr r0, r0, r2 ; \\r | |
43 | str r0, [r1] ; \\r | |
44 | b 1f ; \\r | |
45 | .long (_Address) ; \\r | |
46 | .long (_OrData) ; \\r | |
47 | 1:\r | |
48 | \r | |
49 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
50 | #define MmioAnd32(_Address, _AndData) \\r | |
51 | ldr r1, [pc, #16] ; \\r | |
52 | ldr r2, [pc, #16] ; \\r | |
53 | ldr r0, [r1] ; \\r | |
54 | and r0, r0, r2 ; \\r | |
55 | str r0, [r1] ; \\r | |
56 | b 1f ; \\r | |
57 | .long (_Address) ; \\r | |
58 | .long (_AndData) ; \\r | |
59 | 1:\r | |
60 | \r | |
61 | // returns result in R0, _Address in R1, and _OrData in r2\r | |
62 | #define MmioAndThenOr32(_Address, _AndData, _OrData) \\r | |
63 | ldr r1, [pc, #24] ; \\r | |
64 | ldr r0, [r1] ; \\r | |
65 | ldr r2, [pc, #20] ; \\r | |
66 | and r0, r0, r2 ; \\r | |
67 | ldr r2, [pc, #16] ; \\r | |
68 | orr r0, r0, r2 ; \\r | |
69 | str r0, [r1] ; \\r | |
70 | b 1f ; \\r | |
71 | .long (_Address) ; \\r | |
72 | .long (_AndData) ; \\r | |
73 | .long (_OrData) ; \\r | |
74 | 1:\r | |
75 | \r | |
76 | // returns _Data in _Reg and _Address in R1\r | |
77 | #define MmioWriteFromReg32(_Address, _Reg) \\r | |
78 | ldr r1, [pc, #4] ; \\r | |
79 | str _Reg, [r1] ; \\r | |
80 | b 1f ; \\r | |
81 | .long (_Address) ; \\r | |
82 | 1:\r | |
83 | \r | |
84 | \r | |
85 | // returns _Data in R0 and _Address in R1\r | |
86 | #define MmioRead32(_Address) \\r | |
87 | ldr r1, [pc, #4] ; \\r | |
88 | ldr r0, [r1] ; \\r | |
89 | b 1f ; \\r | |
90 | .long (_Address) ; \\r | |
91 | 1:\r | |
92 | \r | |
93 | // returns _Data in Reg and _Address in R1\r | |
94 | #define MmioReadToReg32(_Address, _Reg) \\r | |
95 | ldr r1, [pc, #4] ; \\r | |
96 | ldr _Reg, [r1] ; \\r | |
97 | b 1f ; \\r | |
98 | .long (_Address) ; \\r | |
99 | 1:\r | |
100 | \r | |
101 | \r | |
102 | // load R0 with _Data\r | |
103 | #define LoadConstant(_Data) \\r | |
104 | ldr r0, [pc, #0] ; \\r | |
105 | b 1f ; \\r | |
106 | .long (_Data) ; \\r | |
107 | 1:\r | |
108 | \r | |
109 | // load _Reg with _Data\r | |
110 | #define LoadConstantToReg(_Data, _Reg) \\r | |
111 | ldr _Reg, [pc, #0] ; \\r | |
112 | b 1f ; \\r | |
113 | .long (_Data) ; \\r | |
114 | 1:\r | |
115 | \r | |
116 | // load _Reg with _Data if eq\r | |
117 | #define LoadConstantToRegIfEq(_Data, _Reg) \\r | |
118 | ldreq _Reg, [pc, #0] ; \\r | |
119 | b 1f ; \\r | |
120 | .long (_Data) ; \\r | |
121 | 1:\r | |
122 | \r | |
123 | // Reserve a region at the top of the Primary Core stack\r | |
124 | // for Global variables for the XIP phase\r | |
125 | #define SetPrimaryStack(StackTop, GlobalSize, Tmp) \\r | |
126 | and Tmp, GlobalSize, #7 ; \\r | |
127 | rsbne Tmp, Tmp, #8 ; \\r | |
128 | add GlobalSize, GlobalSize, Tmp ; \\r | |
129 | sub sp, StackTop, GlobalSize ; \\r | |
130 | ; \\r | |
131 | mov Tmp, sp ; \\r | |
132 | mov GlobalSize, #0x0 ; \\r | |
133 | _SetPrimaryStackInitGlobals: ; \\r | |
134 | cmp Tmp, StackTop ; \\r | |
135 | beq _SetPrimaryStackEnd ; \\r | |
136 | str GlobalSize, [Tmp], #4 ; \\r | |
137 | b _SetPrimaryStackInitGlobals ; \\r | |
138 | _SetPrimaryStackEnd:\r | |
139 | \r | |
140 | // Initialize the Global Variable with '0'\r | |
141 | #define InitializePrimaryStack(GlobalSize, Tmp1) \\r | |
142 | and Tmp1, GlobalSize, #7 ; \\r | |
143 | rsbne Tmp1, Tmp1, #8 ; \\r | |
144 | add GlobalSize, GlobalSize, Tmp1 ; \\r | |
145 | ; \\r | |
146 | mov Tmp1, sp ; \\r | |
147 | sub sp, GlobalSize ; \\r | |
148 | mov GlobalSize, #0x0 ; \\r | |
149 | _InitializePrimaryStackLoop: ; \\r | |
150 | cmp Tmp1, sp ; \\r | |
151 | bls _InitializePrimaryStackEnd ; \\r | |
152 | str GlobalSize, [Tmp1, #-4]! ; \\r | |
153 | b _InitializePrimaryStackLoop ; \\r | |
154 | _InitializePrimaryStackEnd:\r | |
155 | \r | |
156 | #elif defined (__GNUC__)\r | |
157 | \r | |
158 | #define MmioWrite32(Address, Data) \\r | |
159 | ldr r1, =Address ; \\r | |
160 | ldr r0, =Data ; \\r | |
161 | str r0, [r1]\r | |
162 | \r | |
163 | #define MmioOr32(Address, OrData) \\r | |
164 | ldr r1, =Address ; \\r | |
165 | ldr r2, =OrData ; \\r | |
166 | ldr r0, [r1] ; \\r | |
167 | orr r0, r0, r2 ; \\r | |
168 | str r0, [r1]\r | |
169 | \r | |
170 | #define MmioAnd32(Address, AndData) \\r | |
171 | ldr r1, =Address ; \\r | |
172 | ldr r2, =AndData ; \\r | |
173 | ldr r0, [r1] ; \\r | |
174 | and r0, r0, r2 ; \\r | |
175 | str r0, [r1]\r | |
176 | \r | |
177 | #define MmioAndThenOr32(Address, AndData, OrData) \\r | |
178 | ldr r1, =Address ; \\r | |
179 | ldr r0, [r1] ; \\r | |
180 | ldr r2, =AndData ; \\r | |
181 | and r0, r0, r2 ; \\r | |
182 | ldr r2, =OrData ; \\r | |
183 | orr r0, r0, r2 ; \\r | |
184 | str r0, [r1]\r | |
185 | \r | |
186 | #define MmioWriteFromReg32(Address, Reg) \\r | |
187 | ldr r1, =Address ; \\r | |
188 | str Reg, [r1]\r | |
189 | \r | |
190 | #define MmioRead32(Address) \\r | |
191 | ldr r1, =Address ; \\r | |
192 | ldr r0, [r1]\r | |
193 | \r | |
194 | #define MmioReadToReg32(Address, Reg) \\r | |
195 | ldr r1, =Address ; \\r | |
196 | ldr Reg, [r1]\r | |
197 | \r | |
198 | #define LoadConstant(Data) \\r | |
199 | ldr r0, =Data\r | |
200 | \r | |
201 | #define LoadConstantToReg(Data, Reg) \\r | |
202 | ldr Reg, =Data\r | |
203 | \r | |
204 | #define SetPrimaryStack(StackTop, GlobalSize, Tmp) \\r | |
205 | and Tmp, GlobalSize, #7 ; \\r | |
206 | rsbne Tmp, Tmp, #8 ; \\r | |
207 | add GlobalSize, GlobalSize, Tmp ; \\r | |
208 | sub sp, StackTop, GlobalSize ; \\r | |
209 | ; \\r | |
210 | mov Tmp, sp ; \\r | |
211 | mov GlobalSize, #0x0 ; \\r | |
212 | _SetPrimaryStackInitGlobals: ; \\r | |
213 | cmp Tmp, StackTop ; \\r | |
214 | beq _SetPrimaryStackEnd ; \\r | |
215 | str GlobalSize, [Tmp], #4 ; \\r | |
216 | b _SetPrimaryStackInitGlobals ; \\r | |
217 | _SetPrimaryStackEnd:\r | |
218 | \r | |
219 | // Initialize the Global Variable with '0'\r | |
220 | #define InitializePrimaryStack(GlobalSize, Tmp1) \\r | |
221 | and Tmp1, GlobalSize, #7 ; \\r | |
222 | rsbne Tmp1, Tmp1, #8 ; \\r | |
223 | add GlobalSize, GlobalSize, Tmp1 ; \\r | |
224 | ; \\r | |
225 | mov Tmp1, sp ; \\r | |
226 | sub sp, GlobalSize ; \\r | |
227 | mov GlobalSize, #0x0 ; \\r | |
228 | _InitializePrimaryStackLoop: ; \\r | |
229 | cmp Tmp1, sp ; \\r | |
230 | bls _InitializePrimaryStackEnd ; \\r | |
231 | str GlobalSize, [Tmp1, #-4]! ; \\r | |
232 | b _InitializePrimaryStackLoop ; \\r | |
233 | _InitializePrimaryStackEnd:\r | |
234 | \r | |
235 | #else\r | |
236 | \r | |
237 | //\r | |
238 | // Use ARM assembly macros, form armasam\r | |
239 | //\r | |
240 | // Less magic in the macros if ldr reg, =expr works\r | |
241 | //\r | |
242 | \r | |
243 | // returns _Data in R0 and _Address in R1\r | |
244 | \r | |
245 | \r | |
246 | \r | |
247 | #define MmioWrite32(Address, Data) MmioWrite32Macro Address, Data\r | |
248 | \r | |
249 | \r | |
250 | \r | |
251 | \r | |
252 | // returns Data in R0 and Address in R1, and OrData in r2\r | |
253 | #define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData\r | |
254 | \r | |
255 | \r | |
256 | // returns _Data in R0 and _Address in R1, and _OrData in r2\r | |
257 | \r | |
258 | \r | |
259 | #define MmioAnd32(Address, AndData) MmioAnd32Macro Address, AndData\r | |
260 | \r | |
261 | // returns result in R0, _Address in R1, and _OrData in r2\r | |
262 | \r | |
263 | \r | |
264 | #define MmioAndThenOr32(Address, AndData, OrData) MmioAndThenOr32Macro Address, AndData, OrData\r | |
265 | \r | |
266 | \r | |
267 | // returns _Data in _Reg and _Address in R1\r | |
268 | \r | |
269 | \r | |
270 | #define MmioWriteFromReg32(Address, Reg) MmioWriteFromReg32Macro Address, Reg\r | |
271 | \r | |
272 | // returns _Data in R0 and _Address in R1\r | |
273 | \r | |
274 | \r | |
275 | #define MmioRead32(Address) MmioRead32Macro Address\r | |
276 | \r | |
277 | // returns _Data in Reg and _Address in R1\r | |
278 | \r | |
279 | \r | |
280 | #define MmioReadToReg32(Address, Reg) MmioReadToReg32Macro Address, Reg\r | |
281 | \r | |
282 | \r | |
283 | // load R0 with _Data\r | |
284 | \r | |
285 | \r | |
286 | #define LoadConstant(Data) LoadConstantMacro Data\r | |
287 | \r | |
288 | // load _Reg with _Data\r | |
289 | \r | |
290 | \r | |
291 | #define LoadConstantToReg(Data, Reg) LoadConstantToRegMacro Data, Reg\r | |
292 | \r | |
293 | // conditional load testing eq flag\r | |
294 | #define LoadConstantToRegIfEq(Data, Reg) LoadConstantToRegIfEqMacro Data, Reg\r | |
295 | \r | |
296 | #define SetPrimaryStack(StackTop,GlobalSize,Tmp) SetPrimaryStack StackTop, GlobalSize, Tmp\r | |
297 | \r | |
298 | // Initialize the Global Variable with '0'\r | |
299 | #define InitializePrimaryStack(GlobalSize, Tmp1) InitializePrimaryStack GlobalSize, Tmp1\r | |
300 | \r | |
301 | #endif\r | |
302 | \r | |
303 | #endif\r |