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Last change
on this file since 544 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:
1.9 KB
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| 1 | /* FR30 system call emulation code |
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| 2 | Copyright (C) 1998, 2010 Free Software Foundation, Inc. |
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| 3 | Contributed by Cygnus Solutions. */ |
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| 4 | |
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| 5 | #include <sys/stat.h> |
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| 6 | #include "../syscall.h" |
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| 7 | |
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| 8 | int |
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| 9 | _read (file, ptr, len) |
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| 10 | int file; |
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| 11 | char * ptr; |
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| 12 | int len; |
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| 13 | { |
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| 14 | asm ("ldi:8 %0, r0" :: "i" (SYS_read) : "r0"); |
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| 15 | asm ("int #10"); |
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| 16 | |
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| 17 | return; |
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| 18 | } |
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| 19 | |
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| 20 | int |
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| 21 | _lseek (file, ptr, dir) |
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| 22 | int file; |
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| 23 | int ptr; |
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| 24 | int dir; |
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| 25 | { |
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| 26 | asm ("ldi:8 %0, r0" :: "i" (SYS_lseek) : "r0"); |
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| 27 | asm ("int #10"); |
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| 28 | |
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| 29 | return; |
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| 30 | } |
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| 31 | |
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| 32 | int |
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| 33 | _write (file, ptr, len) |
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| 34 | int file; |
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| 35 | char * ptr; |
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| 36 | int len; |
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| 37 | { |
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| 38 | asm ("ldi:8 %0, r0" :: "i" (SYS_write) : "r0"); |
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| 39 | asm ("int #10"); |
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| 40 | |
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| 41 | return; |
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| 42 | } |
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| 43 | |
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| 44 | int |
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| 45 | _open (path, flags) |
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| 46 | const char * path; |
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| 47 | int flags; |
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| 48 | { |
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| 49 | asm ("ldi:8 %0, r0" :: "i" (SYS_open) : "r0"); |
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| 50 | asm ("int #10"); |
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| 51 | |
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| 52 | return; |
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| 53 | } |
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| 54 | |
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| 55 | int |
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| 56 | _close (file) |
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| 57 | int file; |
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| 58 | { |
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| 59 | asm ("ldi:8 %0, r0" :: "i" (SYS_close) : "r0"); |
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| 60 | asm ("int #10"); |
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| 61 | |
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| 62 | return 0; |
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| 63 | } |
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| 64 | |
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| 65 | void |
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| 66 | _exit (n) |
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| 67 | int n; |
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| 68 | { |
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| 69 | asm ("ldi:8 %0, r0" :: "i" (SYS_exit) : "r0"); |
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| 70 | asm ("int #10"); |
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| 71 | } |
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| 72 | |
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| 73 | |
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| 74 | caddr_t |
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| 75 | _sbrk (incr) |
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| 76 | int incr; |
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| 77 | { |
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| 78 | extern char end asm ("_end"); /* Defined by the linker */ |
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| 79 | extern int __stack; /* Defined by linker script. */ |
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| 80 | static char * heap_end; |
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| 81 | char * prev_heap_end; |
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| 82 | |
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| 83 | if (heap_end == NULL) |
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| 84 | heap_end = & end; |
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| 85 | |
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| 86 | prev_heap_end = heap_end; |
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| 87 | #if 0 |
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| 88 | if (heap_end + incr > __stack) |
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| 89 | { |
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| 90 | _write ( 1, "_sbrk: Heap and stack collision\n", 32); |
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| 91 | abort (); |
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| 92 | } |
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| 93 | #endif |
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| 94 | heap_end += incr; |
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| 95 | |
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| 96 | return (caddr_t) prev_heap_end; |
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| 97 | } |
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| 98 | |
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| 99 | int |
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| 100 | _fstat (file, st) |
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| 101 | int file; |
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| 102 | struct stat * st; |
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| 103 | { |
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| 104 | st->st_mode = S_IFCHR; |
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| 105 | return 0; |
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| 106 | } |
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| 107 | |
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| 108 | int |
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| 109 | _unlink () |
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| 110 | { |
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| 111 | return -1; |
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| 112 | } |
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| 113 | |
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| 114 | int |
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| 115 | _isatty (fd) |
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| 116 | int fd; |
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| 117 | { |
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| 118 | return 0; |
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| 119 | } |
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| 120 | |
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| 121 | int |
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| 122 | _raise () |
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| 123 | { |
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| 124 | return 0; |
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| 125 | } |
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| 126 | |
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| 127 | int |
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| 128 | _times () |
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| 129 | { |
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| 130 | return 0; |
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| 131 | } |
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| 132 | |
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| 133 | int |
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| 134 | _kill (pid, sig) |
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| 135 | int pid; |
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| 136 | int sig; |
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| 137 | { |
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| 138 | return 0; |
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| 139 | } |
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| 140 | |
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| 141 | int |
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| 142 | _getpid (void) |
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| 143 | { |
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| 144 | return 0; |
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| 145 | } |
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