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mips: switch to generic sys_fork() and sys_clone()

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we still need the wrappers to store callee-saved registers in
pt_regs, but once that done we can jump to kernel/fork.c variants.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-12-27 12:11:46 -05:00
parent 64b3122df4
commit 50150d2bb9
9 changed files with 23 additions and 73 deletions
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34
arch/mips/kernel/syscall.c
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@@ -83,41 +83,7 @@ SYSCALL_DEFINE6(mips_mmap2, unsigned long, addr, unsigned long, len,
}
save_static_function(sys_fork);
static int __used noinline
_sys_fork(nabi_no_regargs struct pt_regs regs)
{
return do_fork(SIGCHLD, 0, 0, NULL, NULL);
}
save_static_function(sys_clone);
static int __used noinline
_sys_clone(nabi_no_regargs struct pt_regs regs)
{
unsigned long clone_flags;
unsigned long newsp;
int __user *parent_tidptr, *child_tidptr;
clone_flags = regs.regs[4];
newsp = regs.regs[5];
parent_tidptr = (int __user *) regs.regs[6];
#ifdef CONFIG_32BIT
/* We need to fetch the fifth argument off the stack. */
child_tidptr = NULL;
if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)) {
int __user *__user *usp = (int __user *__user *) regs.regs[29];
if (regs.regs[2] == __NR_syscall) {
if (get_user (child_tidptr, &usp[5]))
return -EFAULT;
}
else if (get_user (child_tidptr, &usp[4]))
return -EFAULT;
}
#else
child_tidptr = (int __user *) regs.regs[8];
#endif
return do_fork(clone_flags, newsp, 0,
parent_tidptr, child_tidptr);
}
SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
{