Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.6 KB
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1 | /* syscall.h -- CR16 virtual I/O and trap service codes |
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2 | * |
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3 | * Copyright (c) 2004 National Semiconductor Corporation |
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4 | * |
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5 | * The authors hereby grant permission to use, copy, modify, distribute, |
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6 | * and license this software and its documentation for any purpose, provided |
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7 | * that existing copyright notices are retained in all copies and that this |
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8 | * notice is included verbatim in any distributions. No written agreement, |
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9 | * license, or royalty fee is required for any of the authorized uses. |
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10 | * Modifications to this software may be copyrighted by their authors |
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11 | * and need not follow the licensing terms described here, provided that |
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12 | * the new terms are clearly indicated on the first page of each file where |
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13 | * they apply. |
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14 | */ |
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15 | |
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16 | #ifndef _SYSCALL_H |
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17 | #define _SYSCALL_H |
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18 | |
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19 | #include <sys/asm.h> |
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20 | |
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21 | /* SVC codes to pass to the debugger */ |
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22 | |
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23 | /* Virtual I/O services */ |
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24 | #define SVC_OPEN 0x401 |
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25 | #define SVC_CLOSE 0x402 |
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26 | #define SVC_READ 0x403 |
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27 | #define SVC_WRITE 0x404 |
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28 | #define SVC_LSEEK 0x405 |
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29 | #define SVC_RENAME 0x406 |
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30 | #define SVC_UNLINK 0x407 |
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31 | #define SVC_GETENV 0x408 |
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32 | |
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33 | /* Time service */ |
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34 | #define SVC_TIME 0x300 |
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35 | |
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36 | /* Start/end of program services */ |
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37 | #define SVC_EOP 0x410 |
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38 | |
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39 | /* Trap services */ |
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40 | #define SVC_SVC 0x505 |
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41 | #define SVC_DVZ 0x506 |
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42 | #define SVC_FLG 0x507 |
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43 | #define SVC_UND 0x50a |
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44 | #define SVC_IAD 0x50c |
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45 | |
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46 | |
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47 | /* Places the code of the requested service in R0, then transfers control |
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48 | to the debugger using the BPT exception. |
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49 | It is called from the start routine, VIO functions and the trap |
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50 | handlers. */ |
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51 | |
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52 | #define STRINGIFY(x) #x |
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53 | #define HOST_SERVICE(service) \ |
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54 | do { \ |
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55 | __asm__("movd\t$" STRINGIFY(service) ",(r1,r0)"); \ |
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56 | _excp_(svc); \ |
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57 | } while (0) |
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58 | |
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59 | #endif /* _SYSCALL_H */ |
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60 | |
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