From c0f0c2322f9439fda4fc98f5b13e6cbb98cf92a5 Mon Sep 17 00:00:00 2001 From: Grissiom Date: Tue, 8 Apr 2014 11:24:04 +0800 Subject: [PATCH] [libcpu/arm] remove useless cpsr updating in rt_hw_context_switch_to This piece of code will enable the interrupt early before switching to the first thread. Although it is harmless, but not prefect. --- libcpu/arm/realview-a8-vmm/context_gcc.S | 3 --- 1 file changed, 3 deletions(-) diff --git a/libcpu/arm/realview-a8-vmm/context_gcc.S b/libcpu/arm/realview-a8-vmm/context_gcc.S index 9bb31e3f10..dba0095632 100644 --- a/libcpu/arm/realview-a8-vmm/context_gcc.S +++ b/libcpu/arm/realview-a8-vmm/context_gcc.S @@ -57,9 +57,6 @@ rt_hw_context_switch_to: ldmfd sp!, {r4} @ pop new task spsr msr spsr_cxsf, r4 - bic r4, r4, #0x20 @ must be ARM mode - msr cpsr_cxsf, r4 - ldmfd sp!, {r0-r12, lr, pc}^ @ pop new task r0-r12, lr & pc .section .bss.share.isr