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Have TRAPF_USERMODE() take into account that the gateway page is not

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always kernel space. It should be treated as user space when run with
user privileges (which is the case for the signal trampolines). This
fixes its only use in a KASSERT in subr_trap.c.
This commit is contained in:
Marcel Moolenaar 2003-06-06 23:27:18 +00:00
parent 2f0714a616
commit eaa7bda4a5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=115913
1 changed files with 8 additions and 2 deletions
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10
sys/ia64/include/cpu.h
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@ -61,9 +61,15 @@ struct clockframe {
/* Used by signaling code. */
#define cpu_getstack(td) ((td)->td_frame->tf_special.sp)
/* XXX */
#define TRAPF_PC(tf) ((tf)->tf_special.iip)
#define TRAPF_USERMODE(tf) ((TRAPF_PC(tf) >> 61) < 5)
#define TRAPF_CPL(tf) ((tf)->tf_special.psr & IA64_PSR_CPL)
/*
* User mode for use by ast() and VM faults. It's takes into account
* that the gateway page is kernel space when looking at the VA, but
* is to be treated as user space when running with user priveleges.
*/
#define TRAPF_USERMODE(tf) \
((TRAPF_PC(tf) >> 61) < 5 || TRAPF_CPL(tf) == IA64_PSR_CPL_USER)
/*
* CTL_MACHDEP definitions.