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Commit c0b9bae9 authored by Franck Bui-Huu's avatar Franck Bui-Huu Committed by Ralf Baechle
Browse files

[MIPS] signal: clean up sigframe structure 



This patch makes 'struct sigframe' declaration avalaible for all signals
code. It allows signal32 to not have its own declaration.

This patch also removes all ICACHE_REFILLS_WORKAROUND_WAR tests in
structure declaration and hopefully make them more readable.

Signed-off-by: default avatarFranck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent c3fc4ab3

arch/mips/kernel/signal-common.h

+26 −0
Original line number Diff line number Diff line
@@ -11,6 +11,32 @@ 
#ifndef __SIGNAL_COMMON_H

#define __SIGNAL_COMMON_H



/*

 * Horribly complicated - with the bloody RM9000 workarounds enabled

 * the signal trampolines is moving to the end of the structure so we can

 * increase the alignment without breaking software compatibility.

 */

#if ICACHE_REFILLS_WORKAROUND_WAR == 0



struct sigframe {

	u32 sf_ass[4];		/* argument save space for o32 */

	u32 sf_code[2];		/* signal trampoline */

	struct sigcontext sf_sc;

	sigset_t sf_mask;

};



#else  /* ICACHE_REFILLS_WORKAROUND_WAR */



struct sigframe {

	u32 sf_ass[4];			/* argument save space for o32 */

	u32 sf_pad[2];

	struct sigcontext sf_sc;	/* hw context */

	sigset_t sf_mask;

	u32 sf_code[8] ____cacheline_aligned;	/* signal trampoline */

};



#endif	/* !ICACHE_REFILLS_WORKAROUND_WAR */



/*

 * handle hardware context

 */

arch/mips/kernel/signal.c

+21 −35
Original line number Diff line number Diff line
@@ -38,6 +38,27 @@ 


#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))



#if ICACHE_REFILLS_WORKAROUND_WAR == 0



struct rt_sigframe {

	u32 rs_ass[4];		/* argument save space for o32 */

	u32 rs_code[2];		/* signal trampoline */

	struct siginfo rs_info;

	struct ucontext rs_uc;

};



#else



struct rt_sigframe {

	u32 rs_ass[4];			/* argument save space for o32 */

	u32 rs_pad[2];

	struct siginfo rs_info;

	struct ucontext rs_uc;

	u32 rs_code[8] ____cacheline_aligned;	/* signal trampoline */

};



#endif



/*

 * Helper routines

 */
@@ -287,41 +308,6 @@ asmlinkage int sys_sigaltstack(nabi_no_regargs struct pt_regs regs) 
	return do_sigaltstack(uss, uoss, usp);

}



/*

 * Horribly complicated - with the bloody RM9000 workarounds enabled

 * the signal trampolines is moving to the end of the structure so we can

 * increase the alignment without breaking software compatibility.

 */

#ifdef CONFIG_TRAD_SIGNALS

struct sigframe {

	u32 sf_ass[4];			/* argument save space for o32 */

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 sf_pad[2];

#else

	u32 sf_code[2];			/* signal trampoline */

#endif

	struct sigcontext sf_sc;

	sigset_t sf_mask;

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 sf_code[8] ____cacheline_aligned;	/* signal trampoline */

#endif

};

#endif



struct rt_sigframe {

	u32 rs_ass[4];			/* argument save space for o32 */

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 rs_pad[2];

#else

	u32 rs_code[2];			/* signal trampoline */

#endif

	struct siginfo rs_info;

	struct ucontext rs_uc;

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 rs_code[8] ____cacheline_aligned;	/* signal trampoline */

#endif

};



#ifdef CONFIG_TRAD_SIGNALS

save_static_function(sys_sigreturn);

__attribute_used__ noinline static void

arch/mips/kernel/signal32.c

+21 −28
Original line number Diff line number Diff line
@@ -139,6 +139,27 @@ struct ucontext32 { 
	sigset_t32          uc_sigmask;   /* mask last for extensibility */

};



#if ICACHE_REFILLS_WORKAROUND_WAR == 0



struct rt_sigframe32 {

	u32 rs_ass[4];			/* argument save space for o32 */

	u32 rs_code[2];			/* signal trampoline */

	compat_siginfo_t rs_info;

	struct ucontext32 rs_uc;

};



#else  /* ICACHE_REFILLS_WORKAROUND_WAR */



struct rt_sigframe32 {

	u32 rs_ass[4];			/* argument save space for o32 */

	u32 rs_pad[2];

	compat_siginfo_t rs_info;

	struct ucontext32 rs_uc;

	u32 rs_code[8] __attribute__((aligned(32)));	/* signal trampoline */

};



#endif	/* !ICACHE_REFILLS_WORKAROUND_WAR */



extern void __put_sigset_unknown_nsig(void);

extern void __get_sigset_unknown_nsig(void);
@@ -383,34 +404,6 @@ static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 __user 
	return err;

}



struct sigframe {

	u32 sf_ass[4];			/* argument save space for o32 */

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 sf_pad[2];

#else

	u32 sf_code[2];			/* signal trampoline */

#endif

	struct sigcontext32 sf_sc;

	sigset_t sf_mask;

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 sf_code[8] ____cacheline_aligned;	/* signal trampoline */

#endif

};



struct rt_sigframe32 {

	u32 rs_ass[4];			/* argument save space for o32 */

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 rs_pad[2];

#else

	u32 rs_code[2];			/* signal trampoline */

#endif

	compat_siginfo_t rs_info;

	struct ucontext32 rs_uc;

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 rs_code[8] __attribute__((aligned(32)));	/* signal trampoline */

#endif

};



int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)

{

	int err;

arch/mips/kernel/signal_n32.c

+13 −6
Original line number Diff line number Diff line
@@ -66,20 +66,27 @@ struct ucontextn32 { 
	sigset_t            uc_sigmask;   /* mask last for extensibility */

};



#if ICACHE_REFILLS_WORKAROUND_WAR == 0



struct rt_sigframe_n32 {

	u32 rs_ass[4];			/* argument save space for o32 */

#if ICACHE_REFILLS_WORKAROUND_WAR

	u32 rs_pad[2];

#else

	u32 rs_code[2];			/* signal trampoline */

#endif

	struct siginfo rs_info;

	struct ucontextn32 rs_uc;

#if ICACHE_REFILLS_WORKAROUND_WAR

};



#else  /* ICACHE_REFILLS_WORKAROUND_WAR */



struct rt_sigframe_n32 {

	u32 rs_ass[4];			/* argument save space for o32 */

	u32 rs_pad[2];

	struct siginfo rs_info;

	struct ucontextn32 rs_uc;

	u32 rs_code[8] ____cacheline_aligned;		/* signal trampoline */

#endif

};



#endif	/* !ICACHE_REFILLS_WORKAROUND_WAR */



extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);



save_static_function(sysn32_rt_sigsuspend);