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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-01-28 12:10:08 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-04 10:06:35 +0100 |
| commit | 022851aba54d32831feaff13deb3d9943e130eee (patch) | |
| tree | c1d6a8404dae393bd147790f6a9cf09c2f327b5a /cpukit/score/src/threadinitialize.c | |
| parent | bsps: Thread-local storage (TLS) for linkcmds (diff) | |
| download | rtems-022851aba54d32831feaff13deb3d9943e130eee.tar.bz2 | |
Add thread-local storage (TLS) support
Tested and implemented on ARM, m68k, PowerPC and SPARC. Other
architectures need more work.
Diffstat (limited to 'cpukit/score/src/threadinitialize.c')
| -rw-r--r-- | cpukit/score/src/threadinitialize.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/cpukit/score/src/threadinitialize.c b/cpukit/score/src/threadinitialize.c index 34198caa80..bc2600afcb 100644 --- a/cpukit/score/src/threadinitialize.c +++ b/cpukit/score/src/threadinitialize.c @@ -20,6 +20,7 @@ #include <rtems/score/threadimpl.h> #include <rtems/score/schedulerimpl.h> #include <rtems/score/stackimpl.h> +#include <rtems/score/tls.h> #include <rtems/score/userextimpl.h> #include <rtems/score/watchdogimpl.h> #include <rtems/score/wkspace.h> @@ -48,6 +49,7 @@ bool _Thread_Initialize( void *extensions_area; bool extension_status; int i; + uintptr_t tls_size = (uintptr_t) _TLS_Size; #if defined( RTEMS_SMP ) if ( rtems_configuration_is_smp_enabled() && !is_preemptible ) { @@ -70,6 +72,7 @@ bool _Thread_Initialize( extensions_area = NULL; the_thread->libc_reent = NULL; + the_thread->Start.tls_area = NULL; #if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE ) fp_area = NULL; @@ -105,6 +108,19 @@ bool _Thread_Initialize( actual_stack_size ); + /* Thread-local storage (TLS) area allocation */ + if ( tls_size > 0 ) { + uintptr_t tls_align = _TLS_Heap_align_up( (uintptr_t) _TLS_Alignment ); + uintptr_t tls_alloc = _TLS_Get_allocation_size( tls_size, tls_align ); + + the_thread->Start.tls_area = + _Workspace_Allocate_aligned( tls_alloc, tls_align ); + + if ( the_thread->Start.tls_area == NULL ) { + goto failed; + } + } + /* * Allocate the floating point area for this thread */ @@ -223,6 +239,8 @@ bool _Thread_Initialize( return true; failed: + _Workspace_Free( the_thread->Start.tls_area ); + _Workspace_Free( the_thread->libc_reent ); for ( i=0 ; i <= THREAD_API_LAST ; i++ ) |