zhuyanlinzyl commented on a change in pull request #5261:
URL: https://github.com/apache/incubator-nuttx/pull/5261#discussion_r790458543
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File path: arch/xtensa/src/common/xtensa_svcall.c
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@@ -94,8 +101,71 @@ int xtensa_svcall(int irq, void *context, void *arg)
case SYS_save_context:
{
+ DEBUGASSERT(regs[REG_A3] != 0);
Review comment:
This is becase "spill the register windows" was done in interrupt
handler enter.
As _xtensa_context_save will do _xtensa_window_spill all the time.
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