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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/07/19 08:18:57 UTC

[GitHub] [incubator-nuttx] GUIDINGLI opened a new pull request #4176: ARM: fix CPSR corruption after exception handling

GUIDINGLI opened a new pull request #4176:
URL: https://github.com/apache/incubator-nuttx/pull/4176


   ARM: fix CPSR corruption after exception handling
   
   It seems to be caused by the corrupted or wrong CPSR restored on return
   from exception. NuttX restores the context using code like this:
   
       msr spsr, r1
   
   GCC translates this to:
   
       msr spsr_fc, r1
   
   As a result, not all SPSR fields are updated on exception return. This
   should be:
   
       msr spsr_fsxc, r1
   
   This bug has been fixed by Heesub Shin in:
   343243c7c0de3d0696fa19c08d8d81e8d6cf0a1c
   
   Change-Id: Ibc64db7bceecd0fb6ef39284fb5bc467f5603e2e
   
   ## Summary
   
   ## Impact
   
   ## Testing
   
   


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[GitHub] [incubator-nuttx] acassis merged pull request #4176: ARM: fix CPSR corruption after exception handling

Posted by GitBox <gi...@apache.org>.
acassis merged pull request #4176:
URL: https://github.com/apache/incubator-nuttx/pull/4176


   


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[GitHub] [incubator-nuttx] acassis merged pull request #4176: ARM: fix CPSR corruption after exception handling

Posted by GitBox <gi...@apache.org>.
acassis merged pull request #4176:
URL: https://github.com/apache/incubator-nuttx/pull/4176


   


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[GitHub] [incubator-nuttx] acassis merged pull request #4176: ARM: fix CPSR corruption after exception handling

Posted by GitBox <gi...@apache.org>.
acassis merged pull request #4176:
URL: https://github.com/apache/incubator-nuttx/pull/4176


   


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