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[PATCH] uml: s390 preparation, sighandler interface abstraction

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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>
This commit is contained in:
Bodo Stroesser 2005-05-05 16:15:38 -07:00 committed by Linus Torvalds
parent 5fd861b682
commit 51a6b0c59a
3 changed files with 6 additions and 2 deletions
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2
arch/um/include/sysdep-i386/signal.h
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@ -8,6 +8,8 @@
#include <signal.h> #include <signal.h>
#define ARCH_SIGHDLR_PARAM int sig
#define ARCH_GET_SIGCONTEXT(sc, sig) \ #define ARCH_GET_SIGCONTEXT(sc, sig) \
do sc = (struct sigcontext *) (&sig + 1); while(0) do sc = (struct sigcontext *) (&sig + 1); while(0)

2
arch/um/include/sysdep-x86_64/signal.h
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@ -6,6 +6,8 @@
#ifndef __X86_64_SIGNAL_H_ #ifndef __X86_64_SIGNAL_H_
#define __X86_64_SIGNAL_H_ #define __X86_64_SIGNAL_H_
#define ARCH_SIGHDLR_PARAM int sig
#define ARCH_GET_SIGCONTEXT(sc, sig_addr) \ #define ARCH_GET_SIGCONTEXT(sc, sig_addr) \
do { \ do { \
struct ucontext *__uc; \ struct ucontext *__uc; \

4
arch/um/os-Linux/signal.c
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@ -8,7 +8,7 @@
#include "mode.h" #include "mode.h"
#include "sysdep/signal.h" #include "sysdep/signal.h"
void sig_handler(int sig) void sig_handler(ARCH_SIGHDLR_PARAM)
{ {
struct sigcontext *sc; struct sigcontext *sc;
@ -19,7 +19,7 @@ void sig_handler(int sig)
extern int timer_irq_inited; extern int timer_irq_inited;
void alarm_handler(int sig) void alarm_handler(ARCH_SIGHDLR_PARAM)
{ {
struct sigcontext *sc; struct sigcontext *sc;