diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2015-02-19 16:00:34 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-02-19 16:00:34 +0100 |
| commit | 661af35e5fd878f915ed05dbbfe383f64133f98c (patch) | |
| tree | 956b7efd662b682224e61060552fdcf4201101bf /arch/mips/kernel/entry.S | |
| parent | ca5d25642e212f73492d332d95dc90ef46a0e8dc (diff) | |
| parent | f296e7c48d3155991b99f41372e1786c5be03457 (diff) | |
Merge branch 'mipsr6-for-3.20' of git://git.linux-mips.org/pub/scm/mchandras/linux into mips-for-linux-next
Diffstat (limited to 'arch/mips/kernel/entry.S')
| -rw-r--r-- | arch/mips/kernel/entry.S | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index 4353d323f017..af41ba6db960 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -46,6 +46,11 @@ resume_userspace: local_irq_disable # make sure we dont miss an # interrupt setting need_resched # between sampling and return +#ifdef CONFIG_MIPSR2_TO_R6_EMULATOR + lw k0, TI_R2_EMUL_RET($28) + bnez k0, restore_all_from_r2_emul +#endif + LONG_L a2, TI_FLAGS($28) # current->work andi t0, a2, _TIF_WORK_MASK # (ignoring syscall_trace) bnez t0, work_pending @@ -114,6 +119,19 @@ restore_partial: # restore partial frame RESTORE_SP_AND_RET .set at +#ifdef CONFIG_MIPSR2_TO_R6_EMULATOR +restore_all_from_r2_emul: # restore full frame + .set noat + sw zero, TI_R2_EMUL_RET($28) # reset it + RESTORE_TEMP + RESTORE_AT + RESTORE_STATIC + RESTORE_SOME + LONG_L sp, PT_R29(sp) + eretnc + .set at +#endif + work_pending: andi t0, a2, _TIF_NEED_RESCHED # a2 is preloaded with TI_FLAGS beqz t0, work_notifysig @@ -158,7 +176,8 @@ syscall_exit_work: jal syscall_trace_leave b resume_userspace -#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_MIPS_MT) +#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) || \ + defined(CONFIG_MIPS_MT) /* * MIPS32R2 Instruction Hazard Barrier - must be called @@ -171,4 +190,4 @@ LEAF(mips_ihb) nop END(mips_ihb) -#endif /* CONFIG_CPU_MIPSR2 or CONFIG_MIPS_MT */ +#endif /* CONFIG_CPU_MIPSR2 or CONFIG_CPU_MIPSR6 or CONFIG_MIPS_MT */ |