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MFamd64: r210615

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Fix another fallout from r208833.  savectx() is used to save CPU context
for crash dump (dumppcb) and kdb (stoppcbs).  For both cases, we cannot
have a valid pointer in pcb_save.  This should restore the previous
behaviour.
This commit is contained in:
jkim 2010-07-29 17:00:41 +00:00
parent 68858723f9
commit 3b37222674
2 changed files with 2 additions and 1 deletions
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1
sys/i386/i386/genassym.c
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@ -137,6 +137,7 @@ ASSYM(PCB_DR2, offsetof(struct pcb, pcb_dr2));
ASSYM(PCB_DR3, offsetof(struct pcb, pcb_dr3));
ASSYM(PCB_DR6, offsetof(struct pcb, pcb_dr6));
ASSYM(PCB_DR7, offsetof(struct pcb, pcb_dr7));
ASSYM(PCB_USERFPU, offsetof(struct pcb, pcb_user_save));
ASSYM(PCB_PSL, offsetof(struct pcb, pcb_psl));
ASSYM(PCB_DBREGS, PCB_DBREGS);
ASSYM(PCB_EXT, offsetof(struct pcb, pcb_ext));

2
sys/i386/i386/swtch.s
View File

@ -416,7 +416,7 @@ ENTRY(savectx)
popl %ecx
pushl $PCB_SAVEFPU_SIZE
movl PCB_SAVEFPU(%ecx),%ecx
leal PCB_USERFPU(%ecx),%ecx
pushl %ecx
pushl %eax
call bcopy