From 28d353d9891c28496e366bebe4e65233f59ad1f6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 19 Aug 2012 14:41:00 +1200 Subject: alpha: take kernel_execve() out of entry.S Signed-off-by: Al Viro Signed-off-by: Michael Cree Acked-by: Matt Turner Signed-off-by: Linus Torvalds --- arch/alpha/kernel/process.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'arch/alpha/kernel/process.c') diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index 153d3fce3e8..d6fde98b74b 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -455,3 +455,22 @@ get_wchan(struct task_struct *p) } return pc; } + +int kernel_execve(const char *path, const char *const argv[], const char *const envp[]) +{ + /* Avoid the HAE being gratuitously wrong, which would cause us + to do the whole turn off interrupts thing and restore it. */ + struct pt_regs regs = {.hae = alpha_mv.hae_cache}; + int err = do_execve(path, argv, envp, ®s); + if (!err) { + struct pt_regs *p = current_pt_regs(); + /* copy regs to normal position and off to userland we go... */ + *p = regs; + __asm__ __volatile__ ( + "mov %0, $sp;" + "br $31, ret_from_sys_call" + : : "r"(p)); + } + return err; +} +EXPORT_SYMBOL(kernel_execve); -- cgit v1.2.3-70-g09d2