diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2013-02-03 05:39:22 +0400 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2013-02-23 19:22:48 -0800 |
| commit | 2d6f82fee45a52359012948306587eba704cf35b (patch) | |
| tree | 56d10a67cf1af1f9ba7afb4fb18b1bcdfc81cd75 /arch/xtensa/include/asm/traps.h | |
| parent | b6c7e873daf765e41233b9752083b66442703b7a (diff) | |
xtensa: move spill_registers to traps.h
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/include/asm/traps.h')
| -rw-r--r-- | arch/xtensa/include/asm/traps.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h index 54f70440185e..b5464ef3cf66 100644 --- a/arch/xtensa/include/asm/traps.h +++ b/arch/xtensa/include/asm/traps.h @@ -20,4 +20,28 @@ extern void * __init trap_set_handler(int cause, void *handler); extern void do_unhandled(struct pt_regs *regs, unsigned long exccause); +static inline void spill_registers(void) +{ + unsigned int a0, ps; + + __asm__ __volatile__ ( + "movi a14, " __stringify(PS_EXCM_BIT | LOCKLEVEL) "\n\t" + "mov a12, a0\n\t" + "rsr a13, sar\n\t" + "xsr a14, ps\n\t" + "movi a0, _spill_registers\n\t" + "rsync\n\t" + "callx0 a0\n\t" + "mov a0, a12\n\t" + "wsr a13, sar\n\t" + "wsr a14, ps\n\t" + : : "a" (&a0), "a" (&ps) +#if defined(CONFIG_FRAME_POINTER) + : "a2", "a3", "a4", "a11", "a12", "a13", "a14", "a15", +#else + : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", +#endif + "memory"); +} + #endif /* _XTENSA_TRAPS_H */ |