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| author | Liu Yu <yu.liu@freescale.com> | 2012-03-01 09:20:19 +0800 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2012-07-10 07:07:22 -0500 |
| commit | 2dc3d4cc6848572237efc5da9f79a2446474f00d (patch) | |
| tree | e05f7c3713c1052790920779a565555f0eeb0f6e /arch/powerpc/kernel/head_fsl_booke.S | |
| parent | d729b900e589e1f20294de1abaef067d6b9b2124 (diff) | |
| download | lwn-2dc3d4cc6848572237efc5da9f79a2446474f00d.tar.gz lwn-2dc3d4cc6848572237efc5da9f79a2446474f00d.zip | |
powerpc/e500: make load_up_spe a normal fuction
So that we can call it when improving SPE switch like book3e did for fp
switch.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Olivia Yin <hong-hua.yin@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 1f4434a38608..a01488fe6fbf 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -556,8 +556,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV) /* SPE Unavailable */ START_EXCEPTION(SPEUnavailable) NORMAL_EXCEPTION_PROLOG(SPE_UNAVAIL) - bne load_up_spe - addi r3,r1,STACK_FRAME_OVERHEAD + beq 1f + bl load_up_spe + b fast_exception_return +1: addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_EE_LITE(0x2010, KernelSPE) #else EXCEPTION(0x2020, SPE_UNAVAIL, SPEUnavailable, \ @@ -778,7 +780,7 @@ tlb_write_entry: /* Note that the SPE support is closely modeled after the AltiVec * support. Changes to one are likely to be applicable to the * other! */ -load_up_spe: +_GLOBAL(load_up_spe) /* * Disable SPE for the task which had SPE previously, * and save its SPE registers in its thread_struct. @@ -826,20 +828,7 @@ load_up_spe: subi r4,r5,THREAD stw r4,last_task_used_spe@l(r3) #endif /* !CONFIG_SMP */ - /* restore registers and return */ -2: REST_4GPRS(3, r11) - lwz r10,_CCR(r11) - REST_GPR(1, r11) - mtcr r10 - lwz r10,_LINK(r11) - mtlr r10 - REST_GPR(10, r11) - mtspr SPRN_SRR1,r9 - mtspr SPRN_SRR0,r12 - REST_GPR(9, r11) - REST_GPR(12, r11) - lwz r11,GPR11(r11) - rfi + blr /* * SPE unavailable trap from kernel - print a message, but let |