[PATCH] uml: s390 preparation, sighandler interface abstraction
s390 passes parameters in registers. So the only safe way to find out the address of signal context, error-address and error-type (trap_no), which are passed to signal handlers as parameters, is to declare these parameters. So I inserted an subarch-specific macro which holds the declaration of parameters for signal handlers. Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -8,6 +8,8 @@
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#include <signal.h>
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#define ARCH_SIGHDLR_PARAM int sig
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#define ARCH_GET_SIGCONTEXT(sc, sig) \
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do sc = (struct sigcontext *) (&sig + 1); while(0)
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@ -6,6 +6,8 @@
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#ifndef __X86_64_SIGNAL_H_
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#define __X86_64_SIGNAL_H_
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#define ARCH_SIGHDLR_PARAM int sig
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#define ARCH_GET_SIGCONTEXT(sc, sig_addr) \
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do { \
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struct ucontext *__uc; \
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@ -8,7 +8,7 @@
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#include "mode.h"
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#include "sysdep/signal.h"
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void sig_handler(int sig)
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void sig_handler(ARCH_SIGHDLR_PARAM)
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{
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struct sigcontext *sc;
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@ -19,7 +19,7 @@ void sig_handler(int sig)
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extern int timer_irq_inited;
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void alarm_handler(int sig)
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void alarm_handler(ARCH_SIGHDLR_PARAM)
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{
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struct sigcontext *sc;
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