1 | // DS Wifi interface code |
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2 | // Copyright (C) 2005-2006 Stephen Stair - sgstair@akkit.org - http://www.akkit.org |
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3 | // spinlock.h - code for spinlocking for basic wifi structure memory protection |
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4 | /****************************************************************************** |
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5 | DSWifi Lib and test materials are licenced under the MIT open source licence: |
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6 | Copyright (c) 2005-2006 Stephen Stair |
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7 | |
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8 | Permission is hereby granted, free of charge, to any person obtaining a copy of |
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9 | this software and associated documentation files (the "Software"), to deal in |
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10 | the Software without restriction, including without limitation the rights to |
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11 | use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
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12 | of the Software, and to permit persons to whom the Software is furnished to do |
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13 | so, subject to the following conditions: |
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14 | |
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15 | The above copyright notice and this permission notice shall be included in all |
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16 | copies or substantial portions of the Software. |
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17 | |
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18 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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21 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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22 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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23 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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24 | SOFTWARE. |
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25 | ******************************************************************************/ |
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26 | |
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27 | |
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28 | |
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29 | /* |
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30 | |
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31 | __asm__ ( |
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32 | ".GLOBL SLasm_Acquire, SLasm_Release \n" |
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33 | ".ARM \n" |
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34 | "SLasm_Acquire: \n" |
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35 | " ldr r2,[r0] \n" |
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36 | " cmp r2,#0 \n" |
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37 | " movne r0,#1 \n" |
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38 | " bxne lr \n" |
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39 | " mov r2,r1 \n" |
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40 | " swp r2,r2,[r0] \n" |
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41 | " cmp r2,#0 \n" |
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42 | " cmpne r2,r1 \n" |
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43 | " moveq r0,#0 \n" |
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44 | " bxeq lr \n" |
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45 | " swp r2,r2,[r0] \n" |
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46 | " mov r0,#1 \n" |
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47 | " bx lr \n" |
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48 | "\n\n" |
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49 | "SLasm_Release: \n" |
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50 | " ldr r2,[r0] \n" |
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51 | " cmp r2,r1 \n" |
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52 | " movne r0,#2 \n" |
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53 | " bxne lr \n" |
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54 | " mov r2,#0 \n" |
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55 | " swp r2,r2,[r0] \n" |
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56 | " cmp r2,r1 \n" |
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57 | " moveq r0,#0 \n" |
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58 | " movne r0,#2 \n" |
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59 | " bx lr \n" |
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60 | ); |
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61 | |
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62 | */ |
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63 | |
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