Module Name:	syssrc
Committed By:	scw
Date:		Wed Nov 21 20:25:04 UTC 2001

Modified Files:
	syssrc/sys/arch/m68k/include [nathanw_sa]: frame.h mcontext.h
	syssrc/sys/arch/m68k/m68k [nathanw_sa]: sig_machdep.c

Log Message:
Add an MD flag for uc_flags which indicates if the exception frame
area of m68k's mcontext_t structure has valid contents.

In cpu_getcontext(), set the flag for all frame formats >= FMT4 such
that cpu_setcontext() does The Right Thing with both user and kernel
saved contexts.

Make null FP frame detection work for the 68060's FPU, and ensure we
always do at least an fsave/frestore when saving/restoring FPU regs.

Both kernel and user-level get/set context calls pass all Nathan's
context tests now.


To generate a diff of this commit:
cvs rdiff -r1.18 -r1.18.6.1 syssrc/sys/arch/m68k/include/frame.h
cvs rdiff -r1.1.2.1 -r1.1.2.2 syssrc/sys/arch/m68k/include/mcontext.h
cvs rdiff -r1.15.6.4 -r1.15.6.5 syssrc/sys/arch/m68k/m68k/sig_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.