diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-07 10:17:56 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-07 10:17:56 +0200 |
| commit | f1615bbe9be4def59c3b3eaddb60722efeed16c2 (patch) | |
| tree | ca3020e65447576fc1826e819651e6ba072030b5 /arch/arc/kernel/process.c | |
| parent | cfb3c0ab0903abb6ea5215b37eebd9c2a1f057eb (diff) | |
| parent | cd3de83f147601356395b57a8673e9c5ff1e59d1 (diff) | |
Merge tag 'v3.16-rc4' into drm-intel-next-queued
Due to Dave's vacation drm-next hasn't opened yet for 3.17 so I
couldn't move my drm-intel-next queue forward yet like I usually do.
Just pull in the latest upstream -rc to unblock patch merging - I
don't want to needlessly rebase my current patch pile really and void
all the testing we've done already.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'arch/arc/kernel/process.c')
| -rw-r--r-- | arch/arc/kernel/process.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index 07a3a968fe4..fdd89715d2d 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -151,6 +151,29 @@ int copy_thread(unsigned long clone_flags, } /* + * Do necessary setup to start up a new user task + */ +void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp) +{ + set_fs(USER_DS); /* user space */ + + regs->sp = usp; + regs->ret = pc; + + /* + * [U]ser Mode bit set + * [L] ZOL loop inhibited to begin with - cleared by a LP insn + * Interrupts enabled + */ + regs->status32 = STATUS_U_MASK | STATUS_L_MASK | + STATUS_E1_MASK | STATUS_E2_MASK; + + /* bogus seed values for debugging */ + regs->lp_start = 0x10; + regs->lp_end = 0x80; +} + +/* * Some archs flush debug and FPU info here */ void flush_thread(void) |