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| author | Max Filippov <jcmvbkbc@gmail.com> | 2021-07-26 07:32:55 -0700 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2021-10-18 22:19:35 -0700 |
| commit | da0a4e5c8fbcce3d1afebf9f2a967083bb19634d (patch) | |
| tree | 5decac9abd975143a4f0f0fd63607dc4aaadb324 /arch/xtensa/kernel/signal.c | |
| parent | 09af39f649dac66c2681ca53977275fe876690cc (diff) | |
xtensa: only build windowed register support code when needed
There's no need in window overflow/underflow/alloca exception handlers
or window spill code when neither kernel nor userspace support windowed
registers. Don't build or link it.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/signal.c')
| -rw-r--r-- | arch/xtensa/kernel/signal.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index c4d77dbfb61a..f6c949895b3e 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -45,12 +45,13 @@ struct rt_sigframe unsigned int window[4]; }; -/* +#if defined(USER_SUPPORT_WINDOWED) +/* * Flush register windows stored in pt_regs to stack. * Returns 1 for errors. */ -int +static int flush_window_regs_user(struct pt_regs *regs) { const unsigned long ws = regs->windowstart; @@ -121,6 +122,13 @@ flush_window_regs_user(struct pt_regs *regs) errout: return err; } +#else +static int +flush_window_regs_user(struct pt_regs *regs) +{ + return 0; +} +#endif /* * Note: We don't copy double exception 'regs', we have to finish double exc. |