source: trunk/libs/newlib/src/libgloss/m68k/simulator.S @ 467

Last change on this file since 467 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

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