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[MIPS] signal: clean up sigframe structure

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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: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Franck Bui-Huu 2007-02-05 15:24:21 +01:00 committed by Ralf Baechle
parent c3fc4ab36d
commit c0b9bae9d1
4 changed files with 82 additions and 70 deletions
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26
arch/mips/kernel/signal-common.h
View File

@ -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
*/

56
arch/mips/kernel/signal.c
View File

@ -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

49
arch/mips/kernel/signal32.c
View File

@ -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;

21
arch/mips/kernel/signal_n32.c
View File

@ -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
u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */
#endif
};
#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 /* !ICACHE_REFILLS_WORKAROUND_WAR */
extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
save_static_function(sysn32_rt_sigsuspend);