avoids 1 MOV instruction in light of double load/store code Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> --- arch/arc/include/asm/entry-arcv2.h | 3 +-- arch/arc/include/asm/entry-compact.h | 4 ++-- arch/arc/kernel/entry.S | 4 ++-- 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h index 0733752ce7fe..f5ae394ebe06 100644 --- a/arch/arc/include/asm/entry-arcv2.h +++ b/arch/arc/include/asm/entry-arcv2.h @@ -95,9 +95,8 @@ lr r10, [ecr] lr r11, [erbta] ST2 r10, r11, PT_event - mov r9, r10 - ; OUTPUT: r9 has ECR + ; OUTPUT: r10 has ECR expected by EV_Trap .endm /*------------------------------------------------------------------------ diff --git a/arch/arc/include/asm/entry-compact.h b/arch/arc/include/asm/entry-compact.h index 29f3988c9424..98aff149b344 100644 --- a/arch/arc/include/asm/entry-compact.h +++ b/arch/arc/include/asm/entry-compact.h @@ -198,8 +198,8 @@ PUSHAX CTOP_AUX_EFLAGS #endif - lr r9, [ecr] - st r9, [sp, PT_event] /* EV_Trap expects r9 to have ECR */ + lr r10, [ecr] + st r10, [sp, PT_event] /* EV_Trap expects r10 to have ECR */ .endm /*-------------------------------------------------------------- diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 85d9ea4a0acc..730b83ccfbc1 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -235,8 +235,8 @@ ENTRY(EV_Trap) EXCEPTION_PROLOGUE ;============ TRAP 1 :breakpoints - ; Check ECR for trap with arg (PROLOGUE ensures r9 has ECR) - bmsk.f 0, r9, 7 + ; Check ECR for trap with arg (PROLOGUE ensures r10 has ECR) + bmsk.f 0, r10, 7 bnz trap_with_param ;============ TRAP (no param): syscall top level -- 2.7.4 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
