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powerpc: Fix powerpcspe WRT FPSCR

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Summary:
Since powerpcspe doesn't have a traditional FPU, there's no FPSCR, and
no FPRs.  Attempting to use them triggers an illegal instruction trap.
Fix this unconditional cleanup of FPSCR by conditionalizing it on the
FPU being used in the outgoing thread.

Reviewed By: bdragon
Differential Revision: https://reviews.freebsd.org/D29452
This commit is contained in:
Justin Hibbits 2021-03-27 19:24:59 -05:00
parent a94d15af26
commit 6a762cfae1
1 changed files with 2 additions and 1 deletions
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3
sys/powerpc/powerpc/exec_machdep.c
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@ -566,7 +566,8 @@ cleanup_power_extras(struct thread *td)
if (pcb_flags & PCB_CDSCR)
mtspr(SPR_DSCRP, 0);
cleanup_fpscr();
if (pcb_flags & PCB_FPU)
cleanup_fpscr();
}
/*