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Provide a fast trap path for AST IPIs.

This commit is contained in:
pk 2004-04-20 08:36:46 +00:00
parent aa5498d450
commit ce78973db2
1 changed files with 12 additions and 1 deletions
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13
sys/arch/sparc/sparc/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.205 2004/04/19 10:01:41 pk Exp $ */
/* $NetBSD: locore.s,v 1.206 2004/04/20 08:36:46 pk Exp $ */
/*
* Copyright (c) 1996 Paul Kranenburg
@ -2899,6 +2899,17 @@ _ENTRY(_C_LABEL(ft_srmmu_vcache_flush_range))
b ft_rett
mov SRMMU_CXR, %l7 ! reload ctx register
_ENTRY(_C_LABEL(ft_want_ast))
mov 1, %l4 ! ack xcall in all cases
st %l4, [%l6 + CPUINFO_XMSG_CMPLT] ! completed = 1
btst PSR_PS, %l0 ! if from user mode
be,a slowtrap ! call trap(T_AST)
mov T_AST, %l3
mov %l0, %psr ! else return from trap
nop ! AST will be noticed on out way out
RETT
#endif /* MULTIPROCESSOR */
#ifdef notyet