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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/cpu/arm/cpu.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/cpu/arm/cpu.c')
| -rw-r--r-- | cpukit/score/cpu/arm/cpu.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/cpukit/score/cpu/arm/cpu.c b/cpukit/score/cpu/arm/cpu.c index 1c1fe5d3de..c3f071df55 100644 --- a/cpukit/score/cpu/arm/cpu.c +++ b/cpukit/score/cpu/arm/cpu.c @@ -32,6 +32,7 @@ #include <rtems/score/isr.h> #include <rtems/score/wkspace.h> #include <rtems/score/thread.h> +#include <rtems/score/tls.h> #include <rtems/score/cpu.h> #ifdef ARM_MULTILIB_VFP_D32 @@ -41,6 +42,14 @@ ); #endif +#ifdef ARM_MULTILIB_HAS_THREAD_ID_REGISTER + RTEMS_STATIC_ASSERT( + offsetof( Context_Control, thread_id ) + == ARM_CONTEXT_CONTROL_THREAD_ID_OFFSET, + ARM_CONTEXT_CONTROL_THREAD_ID_OFFSET + ); +#endif + RTEMS_STATIC_ASSERT( sizeof( CPU_Exception_frame ) == ARM_EXCEPTION_FRAME_SIZE, ARM_EXCEPTION_FRAME_SIZE @@ -71,13 +80,22 @@ void _CPU_Context_Initialize( size_t stack_area_size, uint32_t new_level, void (*entry_point)( void ), - bool is_fp + bool is_fp, + void *tls_area ) { the_context->register_sp = (uint32_t) stack_area_begin + stack_area_size; the_context->register_lr = (uint32_t) entry_point; the_context->register_cpsr = ( ( new_level != 0 ) ? ARM_PSR_I : 0 ) | arm_cpu_mode; + +#ifdef ARM_MULTILIB_HAS_THREAD_ID_REGISTER + the_context->thread_id = (uint32_t) tls_area; +#endif + + if ( tls_area != NULL ) { + _TLS_TCB_at_area_begin_initialize( tls_area ); + } } /* Preprocessor magic for stringification of x */ |