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Implement alpha_pal_wrunique() and alpha_pal_rdunique(). Both are

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used to set and get the thread pointer. Note that a context switch
will automaticly save and restore the thread pointer.
This commit is contained in:
Marcel Moolenaar 2003-07-24 07:41:08 +00:00
parent 286cc49014
commit c8baa23e56
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=117955
1 changed files with 17 additions and 0 deletions
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17
sys/alpha/include/alpha_cpu.h
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@ -458,6 +458,23 @@ alpha_pal_rdval(void)
return v0;
}
static __inline void
alpha_pal_wrunique(u_int64_t tp)
{
register u_int64_t a0 __asm__("$16") = tp;
__asm__ __volatile__("call_pal 0x9f # PAL_wrunique"
: "+r" (a0) : : "$1", "$22", "$23", "$24", "$25");
}
static __inline u_int64_t
alpha_pal_rdunique(void)
{
register u_int64_t v0 __asm__("$0");
__asm__ __volatile__("call_pal 0x9e # PAL_rdunique"
: "=r" (v0) : : "$1", "$22", "$23", "$24", "$25");
return (v0);
}
static __inline void
alpha_pal_tbi(u_int64_t op, u_int64_t va)
{