Ticket #578: pr578.diff
File pr578.diff, 1013 bytes (added by Joel Sherrill, on 12/03/06 at 13:31:13) |
---|
-
cpu_asm.S
RCS file: /usr1/CVS/rtems/cpukit/score/cpu/sparc/cpu_asm.S,v retrieving revision 1.8.2.1 diff -u -r1.8.2.1 cpu_asm.S
684 684 call SYM(_Thread_Dispatch), 0 685 685 nop 686 686 687 /* 688 * We invoked _Thread_Dispatch in a state similar to the interrupted 689 * task. In order to safely be able to tinker with the register 690 * windows and get the task back to its pre-interrupt state, 691 * we need to disable interrupts disabled so we can safely tinker 692 * with the register windowing. In particular, the CWP in the PSR 693 * is fragile during this period. (See PR578.) 694 */ 695 mov 2,%g1 ! syscall (disable interrupts) 696 ta 0 ! syscall (disable interrupts) 697 687 698 /* 688 699 * The CWP in place at this point may be different from 689 700 * that which was in effect at the beginning of the ISR if we