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From: Peter Wemm <peter@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 29745 for review
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http://perforce.freebsd.org/chv.cgi?CH=29745

Change 29745 by peter@peter_daintree on 2003/04/25 16:01:39

	Add a pcb flag to indicate that a full trapframe restore
	is required, even from syscall.. eg: a sigreturn(2).
	I'm not sure if this is the right place for it.  mdthread
	perhaps?  Anyway, it'll do for now.

Affected files ...

.. //depot/projects/hammer/sys/x86_64/include/pcb.h#13 edit
.. //depot/projects/hammer/sys/x86_64/x86_64/genassym.c#24 edit

Differences ...

==== //depot/projects/hammer/sys/x86_64/include/pcb.h#13 (text+ko) ====

@@ -60,8 +60,9 @@
 
 	struct	savefpu	pcb_save;
 	u_long	pcb_flags;
-#define	PCB_NPXTRAP	0x04	/* npx trap pending */
-#define	PCB_NPXINITDONE	0x08	/* fpu state is initialized */
+#define	PCB_NPXTRAP	0x01	/* npx trap pending */
+#define	PCB_NPXINITDONE	0x02	/* fpu state is initialized */
+#define	PCB_FULLCTX	0x04	/* full context restore on sysret */
 
 	caddr_t	pcb_onfault;	/* copyin/out fault recovery */
 };

==== //depot/projects/hammer/sys/x86_64/x86_64/genassym.c#24 (text+ko) ====

@@ -122,6 +122,7 @@
 ASSYM(PCB_RFLAGS, offsetof(struct pcb, pcb_rflags));
 
 ASSYM(PCB_FLAGS, offsetof(struct pcb, pcb_flags));
+ASSYM(PCB_FULLCTX, PCB_FULLCTX);
 ASSYM(PCB_SAVEFPU, offsetof(struct pcb, pcb_save));
 ASSYM(PCB_SAVEFPU_SIZE, sizeof(struct savefpu));
 ASSYM(PCB_ONFAULT, offsetof(struct pcb, pcb_onfault));