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authorPhilippe Gerum <rpm@xenomai.org>2009-03-04 03:52:38 -0500
committerBryan Wu <cooloney@kernel.org>2009-03-04 03:52:38 -0500
commit9bd50df6aa9bdd583793a16b0b9379dfd78c079e (patch)
tree691ae451ba3747efccfcac53b1c9c797b184673c /arch/blackfin/mach-common/entry.S
parent97d4b35fb44cd5a80bc10952e2b1de5d3a14117b (diff)
Blackfin arch: Update adeos blackfin arch patch to 1.9-00
Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-common/entry.S')
-rw-r--r--arch/blackfin/mach-common/entry.S61
1 files changed, 60 insertions, 1 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 88de053bbe8e..21e65a339a22 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -600,6 +600,19 @@ ENTRY(_system_call)
600 p2 = [p2]; 600 p2 = [p2];
601 601
602 [p2+(TASK_THREAD+THREAD_KSP)] = sp; 602 [p2+(TASK_THREAD+THREAD_KSP)] = sp;
603#ifdef CONFIG_IPIPE
604 r0 = sp;
605 SP += -12;
606 call ___ipipe_syscall_root;
607 SP += 12;
608 cc = r0 == 1;
609 if cc jump .Lsyscall_really_exit;
610 cc = r0 == -1;
611 if cc jump .Lresume_userspace;
612 r3 = [sp + PT_R3];
613 r4 = [sp + PT_R4];
614 p0 = [sp + PT_ORIG_P0];
615#endif /* CONFIG_IPIPE */
603 616
604 /* Check the System Call */ 617 /* Check the System Call */
605 r7 = __NR_syscall; 618 r7 = __NR_syscall;
@@ -654,6 +667,17 @@ ENTRY(_system_call)
654 r7 = r7 & r4; 667 r7 = r7 & r4;
655 668
656.Lsyscall_resched: 669.Lsyscall_resched:
670#ifdef CONFIG_IPIPE
671 cc = BITTST(r7, TIF_IRQ_SYNC);
672 if !cc jump .Lsyscall_no_irqsync;
673 [--sp] = reti;
674 r0 = [sp++];
675 SP += -12;
676 call ___ipipe_sync_root;
677 SP += 12;
678 jump .Lresume_userspace_1;
679.Lsyscall_no_irqsync:
680#endif
657 cc = BITTST(r7, TIF_NEED_RESCHED); 681 cc = BITTST(r7, TIF_NEED_RESCHED);
658 if !cc jump .Lsyscall_sigpending; 682 if !cc jump .Lsyscall_sigpending;
659 683
@@ -685,6 +709,10 @@ ENTRY(_system_call)
685.Lsyscall_really_exit: 709.Lsyscall_really_exit:
686 r5 = [sp + PT_RESERVED]; 710 r5 = [sp + PT_RESERVED];
687 rets = r5; 711 rets = r5;
712#ifdef CONFIG_IPIPE
713 [--sp] = reti;
714 r5 = [sp++];
715#endif /* CONFIG_IPIPE */
688 rts; 716 rts;
689ENDPROC(_system_call) 717ENDPROC(_system_call)
690 718
@@ -771,6 +799,15 @@ _new_old_task:
771ENDPROC(_resume) 799ENDPROC(_resume)
772 800
773ENTRY(_ret_from_exception) 801ENTRY(_ret_from_exception)
802#ifdef CONFIG_IPIPE
803 [--sp] = rets;
804 SP += -12;
805 call ___ipipe_check_root
806 SP += 12
807 rets = [sp++];
808 cc = r0 == 0;
809 if cc jump 4f; /* not on behalf of Linux, get out */
810#endif /* CONFIG_IPIPE */
774 p2.l = lo(IPEND); 811 p2.l = lo(IPEND);
775 p2.h = hi(IPEND); 812 p2.h = hi(IPEND);
776 813
@@ -827,6 +864,28 @@ ENTRY(_ret_from_exception)
827 rts; 864 rts;
828ENDPROC(_ret_from_exception) 865ENDPROC(_ret_from_exception)
829 866
867#ifdef CONFIG_IPIPE
868
869_sync_root_irqs:
870 [--sp] = reti; /* Reenable interrupts */
871 r0 = [sp++];
872 jump.l ___ipipe_sync_root
873
874_resume_kernel_from_int:
875 r0.l = _sync_root_irqs
876 r0.h = _sync_root_irqs
877 [--sp] = rets;
878 [--sp] = ( r7:4, p5:3 );
879 SP += -12;
880 call ___ipipe_call_irqtail
881 SP += 12;
882 ( r7:4, p5:3 ) = [sp++];
883 rets = [sp++];
884 rts
885#else
886#define _resume_kernel_from_int 2f
887#endif
888
830ENTRY(_return_from_int) 889ENTRY(_return_from_int)
831 /* If someone else already raised IRQ 15, do nothing. */ 890 /* If someone else already raised IRQ 15, do nothing. */
832 csync; 891 csync;
@@ -848,7 +907,7 @@ ENTRY(_return_from_int)
848 r1 = r0 - r1; 907 r1 = r0 - r1;
849 r2 = r0 & r1; 908 r2 = r0 & r1;
850 cc = r2 == 0; 909 cc = r2 == 0;
851 if !cc jump 2f; 910 if !cc jump _resume_kernel_from_int;
852 911
853 /* Lower the interrupt level to 15. */ 912 /* Lower the interrupt level to 15. */
854 p0.l = lo(EVT15); 913 p0.l = lo(EVT15);