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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-08 10:11:13 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-08 13:02:40 +0200 |
| commit | 11b05f11d4d6d61717e345d20f492977b95ab131 (patch) | |
| tree | 5f5bd2a21ea205ea0700d44718de7fcac8234fe7 /c/src/lib/libbsp/sparc/shared/irq_asm.S | |
| parent | doc: Use @dfn for glossary terms (diff) | |
| download | rtems-11b05f11d4d6d61717e345d20f492977b95ab131.tar.bz2 | |
score: Fix CPU context usage on SMP
We must not alter the is executing indicator in
_CPU_Context_Initialize() since this would cause an invalid state during
a self restart.
The is executing indicator must be valid at creation time since
otherwise _Thread_Kill_zombies() uses an undefined value for not started
threads. This could result in a system life lock.
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/irq_asm.S')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/irq_asm.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/irq_asm.S b/c/src/lib/libbsp/sparc/shared/irq_asm.S index 8b152840ed..bf2dca9787 100644 --- a/c/src/lib/libbsp/sparc/shared/irq_asm.S +++ b/c/src/lib/libbsp/sparc/shared/irq_asm.S @@ -164,17 +164,17 @@ done_flushing: nop #if defined(RTEMS_SMP) - ! Indicate that this context is no longer executing + ! The executing context no longer executes on this processor stb %g0, [%o0 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET] - ! Wait for context to stop execution if necessary + ! Wait for heir context to stop execution 1: ldub [%o1 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET], %g1 cmp %g1, 0 bne 1b mov 1, %g1 - ! Indicate that this context is executing + ! The heir context executes now on this processor stb %g1, [%o1 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET] #endif |