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comparison contrib/gthr_supp_vxw_5x.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* Kernel-side additional module for the VxWorks threading support
2 logic for GCC. Written 2002 by Zack Weinberg.
3
4 This file is distributed with GCC, but it is not part of GCC.
5 The contents of this file are in the public domain. */
6
7 /* If you are using the Tornado IDE, copy this file to
8 $WIND_BASE/target/config/comps/src/gthread_supp.c. Then create a
9 file named 10comp_gthread_supp.cdf in target/config/comps/vxWorks
10 with the following contents:
11
12 Component INCLUDE_GCC_GTHREAD {
13 NAME GCC 3.x gthread support (required by C++)
14 CONFIGLETTES gthread_supp.c
15 REQUIRES INCLUDE_CPLUS
16 INCLUDE_WHEN INCLUDE_CPLUS
17 _FOLDER FOLDER_CPLUS
18 }
19
20 If you are using command line builds, instead copy this file to
21 $WIND_BASE/target/src/config/gthread_supp.c, and add the following
22 block to target/src/config/usrExtra.c:
23
24 #ifdef INCLUDE_CPLUS
25 #include "../../src/config/gthread_supp.c"
26 #endif
27
28 You should now be able to rebuild your application using GCC 3.x. */
29
30 #include <vxWorks.h>
31 #include <taskLib.h>
32
33 /* This file provides these routines: */
34 extern void *__gthread_get_tsd_data (WIND_TCB *tcb);
35 extern void __gthread_set_tsd_data (WIND_TCB *tcb, void *data);
36
37 extern void __gthread_enter_tsd_dtor_context (WIND_TCB *tcb);
38 extern void __gthread_leave_tsd_dtor_context (WIND_TCB *tcb);
39
40 /* Set and retrieve the TSD data block for the task TCB.
41
42 Possible choices for TSD_SLOT are:
43 reserved1
44 reserved2
45 spare1
46 spare2
47 spare3
48 spare4
49 (these are all fields of the TCB structure; all have type 'int').
50
51 If you find that the slot chosen by default is already used for
52 something else, simply change the #define below and recompile this
53 file. No other file should reference TSD_SLOT directly. */
54
55 /* WARNING: This code is not 64-bit clean (it assumes that a pointer
56 can be held in an 'int' without truncation). As much of the rest
57 of VxWorks also makes this assumption, we can't really avoid it. */
58
59 #define TSD_SLOT reserved1
60
61 void *
62 __gthread_get_tsd_data (WIND_TCB *tcb)
63 {
64 return (void *) (tcb->TSD_SLOT);
65 }
66
67 void
68 __gthread_set_tsd_data (WIND_TCB *tcb, void *data)
69 {
70 tcb->TSD_SLOT = (int) data;
71 }
72
73 /* Enter and leave "TSD destructor context". This is defined as a
74 state in which it is safe to call free() from a task delete hook
75 on a memory block allocated by the task being deleted.
76 For VxWorks 5.x, nothing needs to be done. */
77
78 #if __GNUC__ >= 2
79 #define UNUSED __attribute__((unused))
80 #else
81 #define UNUSED
82 #endif
83
84 void
85 __gthread_enter_tsd_dtor_context (WIND_TCB *tcb UNUSED)
86 {
87 }
88
89 void
90 __gthread_leave_tsd_dtor_context (WIND_TCB *tcb UNUSED)
91 {
92 }