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authorVineet Gupta <vgupta@synopsys.com>2019-05-15 16:08:10 -0700
committerVineet Gupta <vgupta@synopsys.com>2019-07-08 09:24:44 +0100
commit68e5c6f073bcf70da5f8eef88eb2d98f7c560bb6 (patch)
tree48580fcf457d50fb7202191f20888a18aa74b212 /arch/arc/include
parenta4880801a72ecc2dcdfa432f81a754f3e7438567 (diff)
downloadlinux-68e5c6f073bcf70da5f8eef88eb2d98f7c560bb6.tar.gz
ARC: entry: EV_Trap expects r10 (vs. r9) to have exception cause
avoids 1 MOV instruction in light of double load/store code Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include')
-rw-r--r--arch/arc/include/asm/entry-arcv2.h3
-rw-r--r--arch/arc/include/asm/entry-compact.h4
2 files changed, 3 insertions, 4 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 66ba1bf21d28..66a292335ee6 100644
--- a/arch/arc/include/asm/entry-compact.h
+++ b/arch/arc/include/asm/entry-compact.h
@@ -195,8 +195,8 @@
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
/*--------------------------------------------------------------