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OR in the unsigned form of the MCAR lower register.

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When ORing in a register_t to a wider integer (vm_paddr_t), it gets sign
extended, so high addresses overwrite the upper word with all 0xf.  Cast to the
unsigned form (u_register_t), to avoid this problem, and get correct addresses
printed.
This commit is contained in:
jhibbits 2016-04-25 03:01:57 +00:00
parent 66299e89cd
commit e6cff0f7c1
1 changed files with 1 additions and 1 deletions
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2
sys/powerpc/powerpc/trap.c
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@ -434,7 +434,7 @@ printtrap(u_int vector, struct trapframe *frame, int isfatal, int user)
(u_long)mfspr(SPR_MSSSR0));
#elif defined(BOOKE)
pa = mfspr(SPR_MCARU);
pa = (pa << 32) | mfspr(SPR_MCAR);
pa = (pa << 32) | (u_register_t)mfspr(SPR_MCAR);
printf(" mcsr = 0x%lx\n", (u_long)mfspr(SPR_MCSR));
printf(" mcar = 0x%jx\n", (uintmax_t)pa);
#endif