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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright (c) 1993 NeXT Computer, Inc.
27: *
28: * Miscellaneous inline functions.
29: *
30: * HISTORY
31: *
32: * 15 Mar 1993 ? at NeXT
33: * Created.
34: */
35:
36: #if KERNEL_PRIVATE
37:
38: #import <mach/mach_types.h>
39:
40: #import "PCprivate.h"
41:
42: static __inline__
43: boolean_t
44: maskIsSet(
45: void * mask,
46: int n
47: )
48: {
49: #define cmask ((unsigned char *)mask)
50:
51: if (n < (sizeof (unsigned int) * BYTE_SIZE))
52: return ((*(unsigned int *)cmask & (1 << n)) != 0);
53:
54: return ((*(cmask + (n / BYTE_SIZE)) & (1 << (n % BYTE_SIZE))) != 0);
55: #undef cmask
56: }
57:
58: static __inline__
59: PCcontext_t
60: currentContext(
61: PCshared_t shared
62: )
63: {
64: if (shared->currentContext >= 0 &&
65: shared->currentContext < PCMAXCONTEXT)
66: return (&shared->contexts[shared->currentContext]);
67: else
68: return ((PCcontext_t) 0);
69: }
70:
71: static __inline__
72: PCshared_t
73: threadPCShared(
74: thread_t thread
75: )
76: {
77: if (thread->pcb->PCpriv)
78: return ((PCshared_t)thread->pcb->PCpriv->shared);
79: else
80: return ((PCshared_t) 0);
81: }
82:
83: static __inline__
84: PCcontext_t
85: threadPCContext(
86: thread_t thread
87: )
88: {
89: PCshared_t shared = threadPCShared(thread);
90:
91: if (shared)
92: return (currentContext(shared));
93: else
94: return ((PCcontext_t) 0);
95: }
96:
97: static __inline__
98: boolean_t
99: threadPCException(
100: thread_t thread,
101: thread_saved_state_t *state
102: )
103: {
104: PCshared_t shared = threadPCShared(thread);
105:
106: if (shared && !maskIsSet(&shared->machMask, state->trapno))
107: return (PCexception(thread, state));
108: else
109: return (FALSE);
110: }
111:
112: static __inline__
113: void
114: threadPCInterrupt(
115: thread_t thread,
116: thread_saved_state_t *state
117: )
118: {
119: PCcontext_t context = threadPCContext(thread);
120:
121: if (context &&
122: (context->pendingTimers || context->pendingCallbacks) &&
123: context->running) {
124: PCcallMonitor(thread, state);
125: /* NOTREACHED */
126: }
127: }
128:
129: #endif
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