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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Rev | Line | |
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[444] | 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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