add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/xtensa/include/asm/traps.h
..
..
@@ -25,8 +25,6 @@
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 	void *fixup;
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 	/* For passing a parameter to fixup */
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 	void *fixup_param;
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-	/* For fast syscall handler */
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-	unsigned long syscall_save;
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 	/* Fast user exception handlers */
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 	void *fast_user_handler[EXCCAUSE_N];
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 	/* Fast kernel exception handlers */