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Diffstat (limited to 'manual/platform.texi')
| -rw-r--r-- | manual/platform.texi | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/manual/platform.texi b/manual/platform.texi index 872e32ecb3..cb166641fb 100644 --- a/manual/platform.texi +++ b/manual/platform.texi @@ -97,3 +97,21 @@ Set the Program Priority Register to low value. @safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} Set the Program Priority Register to medium low value. @end deftypefun + +Power ISA 2.07 extends the priorities that can be set to the Program Priority +Register (PPR). The following functions implement the new priority levels: +very low and medium high. + +@deftypefun {void} __ppc_set_ppr_very_low (void) +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Set the Program Priority Register to very low value. +@end deftypefun + +@deftypefun {void} __ppc_set_ppr_med_high (void) +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Set the Program Priority Register to medium high value. The medium high +priority is privileged and may only be set during certain time intervals by +problem-state programs. If the program priority is medium high when the time +interval expires or if an attempt is made to set the priority to medium high +when it is not allowed, the priority is set to medium. +@end deftypefun |