Commit 248b74c7 authored by Al Viro's avatar Al Viro Committed by Richard Weinberger
Browse files

um: start switching the references to host mcontext_t to its userland type 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 05c46db4

arch/um/include/shared/process.h

+0 −5
Original line number Diff line number Diff line
@@ -6,9 +6,4 @@ 
#ifndef __PROCESS_H__

#define __PROCESS_H__



#include <signal.h>



extern void sig_handler(int sig, struct sigcontext *sc);

extern void alarm_handler(int sig, struct sigcontext *sc);



#endif

arch/um/os-Linux/internal.h

0 → 100644
+1 −0
Original line number Diff line number Diff line 
void alarm_handler(int, mcontext_t *);

arch/um/os-Linux/signal.c

+16 −19
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { 
	[SIGIO]		= sigio_handler,

	[SIGVTALRM]	= timer_handler };



static void sig_handler_common(int sig, struct sigcontext *sc)

static void sig_handler_common(int sig, mcontext_t *mc)

{

	struct uml_pt_regs r;

	int save_errno = errno;
@@ -34,8 +34,8 @@ static void sig_handler_common(int sig, struct sigcontext *sc) 
	r.is_user = 0;

	if (sig == SIGSEGV) {

		/* For segfaults, we want the data from the sigcontext. */

		copy_sc(&r, sc);

		GET_FAULTINFO_FROM_SC(r.faultinfo, sc);

		copy_sc(&r, (struct sigcontext *)mc);

		GET_FAULTINFO_FROM_MC(r.faultinfo, mc);

	}



	/* enable signals if sig isn't IRQ signal */
@@ -62,7 +62,7 @@ static void sig_handler_common(int sig, struct sigcontext *sc) 
static int signals_enabled;

static unsigned int signals_pending;



void sig_handler(int sig, struct sigcontext *sc)

void sig_handler(int sig, mcontext_t *mc)

{

	int enabled;
@@ -74,23 +74,23 @@ void sig_handler(int sig, struct sigcontext *sc) 


	block_signals();



	sig_handler_common(sig, sc);

	sig_handler_common(sig, mc);



	set_signals(enabled);

}



static void real_alarm_handler(struct sigcontext *sc)

static void real_alarm_handler(mcontext_t *mc)

{

	struct uml_pt_regs regs;



	if (sc != NULL)

		copy_sc(&regs, sc);

	if (mc != NULL)

		copy_sc(&regs, (struct sigcontext *)mc);

	regs.is_user = 0;

	unblock_signals();

	timer_handler(SIGVTALRM, &regs);

}



void alarm_handler(int sig, struct sigcontext *sc)

void alarm_handler(int sig, mcontext_t *mc)

{

	int enabled;
@@ -102,7 +102,7 @@ void alarm_handler(int sig, struct sigcontext *sc) 


	block_signals();



	real_alarm_handler(sc);

	real_alarm_handler(mc);

	set_signals(enabled);

}
@@ -121,7 +121,7 @@ void set_sigstack(void *sig_stack, int size) 
		panic("enabling signal stack failed, errno = %d\n", errno);

}



static void (*handlers[_NSIG])(int sig, struct sigcontext *sc) = {

static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = {

	[SIGSEGV] = sig_handler,

	[SIGBUS] = sig_handler,

	[SIGILL] = sig_handler,
@@ -133,8 +133,11 @@ static void (*handlers[_NSIG])(int sig, struct sigcontext *sc) = { 
	[SIGVTALRM] = alarm_handler

};



static void handle_signal(int sig, struct sigcontext *sc)



static void hard_handler(int sig, siginfo_t *info, void *p)

{

	struct ucontext *uc = p;

	mcontext_t *mc = &uc->uc_mcontext;

	unsigned long pending = 1UL << sig;



	do {
@@ -160,7 +163,7 @@ static void handle_signal(int sig, struct sigcontext *sc) 
		while ((sig = ffs(pending)) != 0){

			sig--;

			pending &= ~(1 << sig);

			(*handlers[sig])(sig, sc);

			(*handlers[sig])(sig, mc);

		}



		/*
@@ -174,12 +177,6 @@ static void handle_signal(int sig, struct sigcontext *sc) 
	} while (pending);

}



static void hard_handler(int sig, siginfo_t *info, void *p)

{

	struct ucontext *uc = p;

	handle_signal(sig, (struct sigcontext *) &uc->uc_mcontext);

}



void set_handler(int sig)

{

	struct sigaction action;

arch/um/os-Linux/time.c

+1 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ 
#include <sys/time.h>

#include "kern_util.h"

#include "os.h"

#include "process.h"

#include "internal.h"



int set_interval(void)

{

arch/um/sys-x86/shared/sysdep/sigcontext_32.h

+7 −0
Original line number Diff line number Diff line
@@ -22,4 +22,11 @@ 
		(fi).trap_no = SC_TRAPNO(sc); \

	}



#define GET_FAULTINFO_FROM_MC(fi, mc) \

	{ \

		(fi).cr2 = (mc)->cr2; \

		(fi).error_code = (mc)->gregs[REG_ERR]; \

		(fi).trap_no = (mc)->gregs[REG_TRAPNO]; \

	}



#endif