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[POWERPC] Consolidate sys_sigaltstack 

sys_sigaltstack is the same on 32bit and 64 and we can consolidate it
to signal.c.  The only difference is that the 32bit code uses ints
for the unused register paramaters and 64bit unsigned long.  I've
changed it to unsigned long because it's the same width on 32bit.

(I also wonder who came up with this awkward calling convention.. :))

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Christoph Hellwig 2007-06-04 15:15:50 +10:00 committed by Paul Mackerras
parent 22e38f2932
commit 69d15f6b35
4 changed files with 7 additions and 23 deletions
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7
arch/powerpc/kernel/signal.c
View File

@ -63,3 +63,10 @@ void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka,
regs->ccr |= 0x10000000;
}
}
long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
unsigned long r5, unsigned long r6, unsigned long r7,
unsigned long r8, struct pt_regs *regs)
{
return do_sigaltstack(uss, uoss, regs->gpr[1]);
}

8
arch/powerpc/kernel/signal_32.c
View File

@ -253,14 +253,6 @@ long sys_sigsuspend(old_sigset_t mask)
return -ERESTARTNOHAND;
}
#ifdef CONFIG_PPC32
long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, int r5,
int r6, int r7, int r8, struct pt_regs *regs)
{
return do_sigaltstack(uss, uoss, regs->gpr[1]);
}
#endif
long sys_sigaction(int sig, struct old_sigaction __user *act,
struct old_sigaction __user *oact)
{

8
arch/powerpc/kernel/signal_64.c
View File

@ -66,14 +66,6 @@ struct rt_sigframe {
char abigap[288];
} __attribute__ ((aligned (16)));
long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r5,
unsigned long r6, unsigned long r7, unsigned long r8,
struct pt_regs *regs)
{
return do_sigaltstack(uss, uoss, regs->gpr[1]);
}
/*
* Set up the sigcontext for the signal frame.
*/

7
include/asm-powerpc/syscalls.h
View File

@ -43,16 +43,9 @@ asmlinkage long ppc_newuname(struct new_utsname __user * name);
asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset,
size_t sigsetsize);
#ifndef __powerpc64__
asmlinkage long sys_sigaltstack(const stack_t __user *uss,
stack_t __user *uoss, int r5, int r6, int r7, int r8,
struct pt_regs *regs);
#else /* __powerpc64__ */
asmlinkage long sys_sigaltstack(const stack_t __user *uss,
stack_t __user *uoss, unsigned long r5, unsigned long r6,
unsigned long r7, unsigned long r8, struct pt_regs *regs);
#endif /* __powerpc64__ */
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_SYSCALLS_H */