From owner-cvs-all  Wed Nov 29 21:23:54 2000
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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Wed, 29 Nov 2000 21:23:49 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/alpha/alpha machdep.c src/sys/alpha/include
         cpu.h src/sys/alpha/osf1 osf1_signal.c src/sys/compat/svr4
         svr4_signal.c src/sys/i386/i386 machdep.c src/sys/i386/include
         cpu.h src/sys/i386/linux linux.h linux_machdep.c linux_sysvec.c ...
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marcel      2000/11/29 21:23:49 PST

  Modified files:
    sys/alpha/alpha      machdep.c 
    sys/alpha/include    cpu.h 
    sys/alpha/osf1       osf1_signal.c 
    sys/compat/svr4      svr4_signal.c 
    sys/i386/i386        machdep.c 
    sys/i386/include     cpu.h 
    sys/i386/linux       linux.h linux_machdep.c linux_sysvec.c 
    sys/i386/svr4        svr4_machdep.c 
    sys/ia64/ia64        machdep.c 
    sys/ia64/include     cpu.h 
    sys/kern             kern_sig.c 
    sys/pc98/i386        machdep.c 
    sys/sys              proc.h 
  Log:
  Don't use p->p_sigstk.ss_flags to keep state of whether the
  process is on the alternate stack or not. For compatibility
  with sigstack(2) state is being updated if such is needed.
  
  We now determine whether the process is on the alternate
  stack by looking at its stack pointer. This allows a process
  to siglongjmp from a signal handler on the alternate stack
  to the place of the sigsetjmp on the normal stack. When
  maintaining state, this would have invalidated the state
  information and causing a subsequent signal to be delivered
  on the normal stack instead of the alternate stack.
  
  PR: 22286
  
  Revision  Changes    Path
  1.102     +16 -5     src/sys/alpha/alpha/machdep.c
  1.20      +3 -1      src/sys/alpha/include/cpu.h
  1.4       +3 -3      src/sys/alpha/osf1/osf1_signal.c
  1.11      +2 -2      src/sys/compat/svr4/svr4_signal.c
  1.423     +18 -6     src/sys/i386/i386/machdep.c
  1.51      +3 -2      src/sys/i386/include/cpu.h
  1.51      +1 -2      src/sys/i386/linux/linux.h
  1.10      +1 -3      src/sys/i386/linux/linux_machdep.c
  1.71      +13 -18    src/sys/i386/linux/linux_sysvec.c
  1.15      +2 -2      src/sys/i386/svr4/svr4_machdep.c
  1.14      +9 -3      src/sys/ia64/ia64/machdep.c
  1.7       +3 -1      src/sys/ia64/include/cpu.h
  1.94      +38 -28    src/sys/kern/kern_sig.c
  1.191     +18 -6     src/sys/pc98/i386/machdep.c
  1.127     +15 -1     src/sys/sys/proc.h



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