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Last change
on this file since 491 was
444,
checked in by satin@…, 7 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.7 KB
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| 1 | /* |
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| 2 | * simulator.S -- m68k simulator system calls. |
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| 3 | * |
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| 4 | * Copyright (c) 1995, 2001 Cygnus Support |
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| 5 | * |
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| 6 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 7 | * and license this software and its documentation for any purpose, provided |
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| 8 | * that existing copyright notices are retained in all copies and that this |
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| 9 | * notice is included verbatim in any distributions. No written agreement, |
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| 10 | * license, or royalty fee is required for any of the authorized uses. |
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| 11 | * Modifications to this software may be copyrighted by their authors |
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| 12 | * and need not follow the licensing terms described here, provided that |
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| 13 | * the new terms are clearly indicated on the first page of each file where |
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| 14 | * they apply. |
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| 15 | */ |
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| 16 | |
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| 17 | #include "asm.h" |
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| 18 | |
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| 19 | #define SYSCALL(x) .word 0x4afc, x |
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| 20 | |
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| 21 | #define FUNC_START(x) .globl x; x: |
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| 22 | #define FUNC_END(x) |
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| 23 | #define FUNC_NAME(x) SYM(x) |
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| 24 | |
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| 25 | FUNC_START(_exit) |
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| 26 | SYSCALL(1) |
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| 27 | |
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| 28 | /* |
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| 29 | * Insure that the debugger tells the client that the PC is in _exit, |
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| 30 | * not whatever function happens to follow this function. |
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| 31 | */ |
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| 32 | |
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| 33 | 0: nop |
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| 34 | jmp 0b /* we never should return, but... */ |
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| 35 | |
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| 36 | FUNC_END(_exit) |
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| 37 | |
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| 38 | FUNC_START(read) |
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| 39 | SYSCALL(3) |
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| 40 | bcs FUNC_NAME(_cerror) |
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| 41 | rts |
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| 42 | FUNC_END(read) |
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| 43 | |
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| 44 | FUNC_START(write) |
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| 45 | SYSCALL(4) |
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| 46 | bcs FUNC_NAME(_cerror) |
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| 47 | rts |
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| 48 | FUNC_END(write) |
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| 49 | |
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| 50 | FUNC_START(open) |
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| 51 | SYSCALL(5) |
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| 52 | bcs FUNC_NAME(_cerror) |
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| 53 | rts |
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| 54 | FUNC_END(open) |
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| 55 | |
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| 56 | FUNC_START(close) |
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| 57 | SYSCALL(6) |
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| 58 | bcs FUNC_NAME(_cerror) |
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| 59 | rts |
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| 60 | FUNC_END(close) |
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| 61 | |
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| 62 | FUNC_START(brk) |
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| 63 | SYSCALL(17) |
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| 64 | bcs FUNC_NAME(_cerror) |
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| 65 | rts |
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| 66 | FUNC_END(brk) |
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| 67 | |
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| 68 | FUNC_START(lseek) |
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| 69 | SYSCALL(199) |
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| 70 | bcs FUNC_NAME(_cerror) |
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| 71 | rts |
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| 72 | FUNC_END(lseek) |
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| 73 | |
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| 74 | FUNC_START(fstat) |
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| 75 | SYSCALL(28) |
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| 76 | bcs FUNC_NAME(_cerror) |
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| 77 | rts |
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| 78 | FUNC_END(lseek) |
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| 79 | |
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| 80 | FUNC_START(isatty) |
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| 81 | SYSCALL(29) |
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| 82 | bcs FUNC_NAME(_cerror) |
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| 83 | rts |
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| 84 | FUNC_END(isatty) |
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