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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-06-29 14:37:47 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-07-04 08:30:42 +0200 |
commit | 03e4d1e931cdd6582ccc92b3a4dc883b446b5647 (patch) | |
tree | dea1774058ed7d4c209d594ed6ea50aae3f6656d /cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h | |
parent | libtests/crypt01: Avoid stack overflows (diff) | |
download | rtems-03e4d1e931cdd6582ccc92b3a4dc883b446b5647.tar.bz2 |
score: Add _CPU_Use_thread_local_storage()
At some point during system initialization, the idle threads are created.
Afterwards, the boot processor basically executes within the context of an idle
thread with thread dispatching disabled. On some architectures, the
thread-local storage area of the associated thread must be set in dedicated
processor registers. Add the new CPU port function to do this:
void _CPU_Use_thread_local_storage( const Context_Control *context )
Close #4672.
Diffstat (limited to '')
-rw-r--r-- | cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h b/cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h index 7197eb960e..2a200be7e3 100644 --- a/cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h +++ b/cpukit/score/cpu/sparc/include/rtems/score/cpuimpl.h @@ -234,6 +234,18 @@ RTEMS_INLINE_ROUTINE void _CPU_Instruction_no_operation( void ) __asm__ volatile ( "nop" ); } +RTEMS_INLINE_ROUTINE void _CPU_Use_thread_local_storage( + const Context_Control *context +) +{ + register uint32_t g7 __asm__( "g7" ); + + g7 = context->g7; + + /* Make sure that the register assignment is not optimized away */ + __asm__ volatile ( "" : : "r" ( g7 ) ); +} + #ifdef __cplusplus } #endif |