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fix Nios II rt_hw_context_switch_interrupt bug 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1396 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
wuyangyong 2011-05-06 15:25:31 +00:00
parent a607e1485b
commit c98fd0226f
1 changed files with 6 additions and 0 deletions
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6
libcpu/nios/nios_ii/context_gcc.S
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@ -213,6 +213,11 @@ rt_hw_context_switch:
.global rt_hw_context_switch_interrupt
.type rt_hw_context_switch_interrupt, %function
rt_hw_context_switch_interrupt:
/* if( rt_thread_switch_interrput_flag != 0 ) _from_thread_not_change */
ldw r2,%gprel(rt_thread_switch_interrput_flag)(gp)
bne r2,zero,_from_thread_not_change
_from_thread_change:
/* save ea -> rt_current_thread_entry */
addi ea,ea,-4
stw ea,%gprel(rt_current_thread_entry)(gp)
@ -224,6 +229,7 @@ rt_hw_context_switch_interrupt:
/* update rt_interrupt_from_thread */
stw r4,%gprel(rt_interrupt_from_thread)(gp)
_from_thread_not_change:
/* update rt_interrupt_to_thread */
stw r5,%gprel(rt_interrupt_to_thread)(gp)