Author: jkim
Date: Thu Jul 29 17:00:41 2010
New Revision: 210617
URL: http://svn.freebsd.org/changeset/base/210617
Log:
MFamd64: r210615
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.
Modified:
head/sys/i386/i386/genassym.c
head/sys/i386/i386/swtch.s
Modified: head/sys/i386/i386/genassym.c
==============================================================================
--- head/sys/i386/i386/genassym.c Thu Jul 29 16:55:27 2010
(r210616)
+++ head/sys/i386/i386/genassym.c Thu Jul 29 17:00:41 2010
(r210617)
@@ -137,6 +137,7 @@ ASSYM(PCB_DR2, offsetof(struct pcb, pcb_
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));
Modified: head/sys/i386/i386/swtch.s
==============================================================================
--- head/sys/i386/i386/swtch.s Thu Jul 29 16:55:27 2010 (r210616)
+++ head/sys/i386/i386/swtch.s Thu Jul 29 17:00:41 2010 (r210617)
@@ -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
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