diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/irq_asm.S')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/irq_asm.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/irq_asm.S b/c/src/lib/libbsp/sparc/shared/irq_asm.S index 3a86ad50f2..8b152840ed 100644 --- a/c/src/lib/libbsp/sparc/shared/irq_asm.S +++ b/c/src/lib/libbsp/sparc/shared/irq_asm.S @@ -163,6 +163,21 @@ done_flushing: nop nop +#if defined(RTEMS_SMP) + ! Indicate that this context is no longer executing + stb %g0, [%o0 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET] + + ! Wait for context to stop execution if necessary +1: + ldub [%o1 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET], %g1 + cmp %g1, 0 + bne 1b + mov 1, %g1 + + ! Indicate that this context is executing + stb %g1, [%o1 + SPARC_CONTEXT_CONTROL_IS_EXECUTING_OFFSET] +#endif + ld [%o1 + G5_OFFSET], %g5 ! restore the global registers ld [%o1 + G7_OFFSET], %g7 @@ -202,6 +217,11 @@ done_flushing: SYM(_CPU_Context_restore): save %sp, -CPU_MINIMUM_STACK_FRAME_SIZE, %sp rd %psr, %o2 +#if defined(RTEMS_SMP) + ! On SPARC the restore path needs also a valid executing context on SMP + ! to update the is executing indicator. + mov %i0, %o0 +#endif ba SYM(_CPU_Context_restore_heir) mov %i0, %o1 ! in the delay slot |