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jeremybenn |
/* Kernel-side additional module for the VxWorks threading support
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logic for GCC. Written 2002 by Zack Weinberg.
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This file is distributed with GCC, but it is not part of GCC.
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The contents of this file are in the public domain. */
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/* If you are using the Tornado IDE, copy this file to
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$WIND_BASE/target/config/comps/src/gthread_supp.c. Then create a
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file named 10comp_gthread_supp.cdf in target/config/comps/vxWorks
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with the following contents:
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Component INCLUDE_GCC_GTHREAD {
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NAME GCC 3.x gthread support (required by C++)
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CONFIGLETTES gthread_supp.c
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REQUIRES INCLUDE_CPLUS
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INCLUDE_WHEN INCLUDE_CPLUS
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_FOLDER FOLDER_CPLUS
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}
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If you are using command line builds, instead copy this file to
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$WIND_BASE/target/src/config/gthread_supp.c, and add the following
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block to target/src/config/usrExtra.c:
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#ifdef INCLUDE_CPLUS
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#include "../../src/config/gthread_supp.c"
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#endif
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You should now be able to rebuild your application using GCC 3.x. */
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#include <vxWorks.h>
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#include <taskLib.h>
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/* This file provides these routines: */
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extern void *__gthread_get_tsd_data (WIND_TCB *tcb);
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extern void __gthread_set_tsd_data (WIND_TCB *tcb, void *data);
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extern void __gthread_enter_tsd_dtor_context (WIND_TCB *tcb);
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extern void __gthread_leave_tsd_dtor_context (WIND_TCB *tcb);
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/* Set and retrieve the TSD data block for the task TCB.
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Possible choices for TSD_SLOT are:
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reserved1
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reserved2
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spare1
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spare2
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spare3
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spare4
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(these are all fields of the TCB structure; all have type 'int').
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If you find that the slot chosen by default is already used for
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something else, simply change the #define below and recompile this
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file. No other file should reference TSD_SLOT directly. */
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/* WARNING: This code is not 64-bit clean (it assumes that a pointer
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can be held in an 'int' without truncation). As much of the rest
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of VxWorks also makes this assumption, we can't really avoid it. */
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#define TSD_SLOT reserved1
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void *
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__gthread_get_tsd_data (WIND_TCB *tcb)
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{
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return (void *) (tcb->TSD_SLOT);
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}
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void
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__gthread_set_tsd_data (WIND_TCB *tcb, void *data)
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{
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tcb->TSD_SLOT = (int) data;
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}
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/* Enter and leave "TSD destructor context". This is defined as a
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state in which it is safe to call free() from a task delete hook
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on a memory block allocated by the task being deleted.
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For VxWorks 5.x, nothing needs to be done. */
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#if __GNUC__ >= 2
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#define UNUSED __attribute__((unused))
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#else
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#define UNUSED
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#endif
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void
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__gthread_enter_tsd_dtor_context (WIND_TCB *tcb UNUSED)
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{
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}
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void
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__gthread_leave_tsd_dtor_context (WIND_TCB *tcb UNUSED)
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{
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}
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