libs/rt-thread-official
libs/rt-thread-official
4
0
Fork 0
mirror of https://github.com/RT-Thread/rt-thread.git synced 2025-02-09 02:11:24 +08:00
Code Issues Releases Wiki Activity

[libcpu/aarch64] improve performance of IRQ dis/en-able (#8687)

Browse Source 
Signed-off-by: Shell <smokewood@qq.com>
This commit is contained in:
Shell 2024-03-28 23:32:05 +08:00 committed by Meco Man
parent 8881f0eea1
commit f4c7d46300
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
libcpu/aarch64/common/context_gcc.S
View File

@ -314,6 +314,12 @@ rt_hw_interrupt_is_disabled:
.globl rt_hw_interrupt_disable .globl rt_hw_interrupt_disable
rt_hw_interrupt_disable: rt_hw_interrupt_disable:
MRS X0, DAIF MRS X0, DAIF
AND X0, X0, #0xc0
CMP X0, #0xc0
/* branch if bits not both set(zero) */
BNE 1f
RET
1:
MSR DAIFSet, #3 MSR DAIFSet, #3
DSB NSH DSB NSH
ISB ISB
@ -324,6 +330,12 @@ rt_hw_interrupt_disable:
*/ */
.globl rt_hw_interrupt_enable .globl rt_hw_interrupt_enable
rt_hw_interrupt_enable: rt_hw_interrupt_enable:
AND X0, X0, #0xc0
CMP X0, #0xc0
/* branch if one of the bits not set(zero) */
BNE 1f
RET
1:
ISB ISB
DSB NSH DSB NSH
AND X0, X0, #0xc0 AND X0, X0, #0xc0
@ -439,7 +451,7 @@ rt_hw_context_switch_exit:
MOV X0, SP MOV X0, SP
RESTORE_CONTEXT RESTORE_CONTEXT
#else /* RT_USING_SMP */ #else /* !RT_USING_SMP */
/* /*
* void rt_hw_context_switch_to(rt_ubase_t to); * void rt_hw_context_switch_to(rt_ubase_t to);