diff options
| author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2020-03-05 23:02:51 +0300 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2020-03-16 10:30:49 -0700 |
| commit | 7321e2ea0d6aece516a9c0827028ecda2ccaeae9 (patch) | |
| tree | d53d77373a555448b2ef633c04e84dc9f3c6cc38 /arch/arc/include/asm/entry-arcv2.h | |
| parent | 4827d0cf744e7e9cc73f10e1f4eaca904a3868c1 (diff) | |
ARC: add support for DSP-enabled userspace applications
To be able to run DSP-enabled userspace applications we need to
save and restore following DSP-related registers:
At IRQ/exception entry/exit:
* DSP_CTRL (save it and reset to value suitable for kernel)
* ACC0_LO, ACC0_HI (we already save them as r58, r59 pair)
At context switch:
* ACC0_GLO, ACC0_GHI
* DSP_BFLY0, DSP_FFT_CTRL
Reviewed-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include/asm/entry-arcv2.h')
| -rw-r--r-- | arch/arc/include/asm/entry-arcv2.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h index dd6aa18b51ca..ae0aa5323be1 100644 --- a/arch/arc/include/asm/entry-arcv2.h +++ b/arch/arc/include/asm/entry-arcv2.h @@ -192,6 +192,9 @@ ld r25, [sp, PT_user_r25] #endif + /* clobbers r10, r11 registers pair */ + DSP_RESTORE_REGFILE_IRQ + #ifdef CONFIG_ARC_HAS_ACCL_REGS LD2 r58, r59, PT_r58 #endif |