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microblaze: entry.S: Macro optimization 

We are not working with values from MSR that's why
we can discard it and use r11 for different purpose without
saving/restoring.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-06-22 17:52:47 +02:00
parent c318d483b3
commit 66f7de8634
1 changed files with 12 additions and 12 deletions
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24
arch/microblaze/kernel/entry.S
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@ -48,56 +48,56 @@
*/
#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
.macro clear_bip
msrclr r11, MSR_BIP
msrclr r0, MSR_BIP
nop
.endm
.macro set_bip
msrset r11, MSR_BIP
msrset r0, MSR_BIP
nop
.endm
.macro clear_eip
msrclr r11, MSR_EIP
msrclr r0, MSR_EIP
nop
.endm
.macro set_ee
msrset r11, MSR_EE
msrset r0, MSR_EE
nop
.endm
.macro disable_irq
msrclr r11, MSR_IE
msrclr r0, MSR_IE
nop
.endm
.macro enable_irq
msrset r11, MSR_IE
msrset r0, MSR_IE
nop
.endm
.macro set_ums
msrset r11, MSR_UMS
msrset r0, MSR_UMS
nop
msrclr r11, MSR_VMS
msrclr r0, MSR_VMS
nop
.endm
.macro set_vms
msrclr r11, MSR_UMS
msrclr r0, MSR_UMS
nop
msrset r11, MSR_VMS
msrset r0, MSR_VMS
nop
.endm
.macro clear_ums
msrclr r11, MSR_UMS
msrclr r0, MSR_UMS
nop
.endm
.macro clear_vms_ums
msrclr r11, MSR_VMS | MSR_UMS
msrclr r0, MSR_VMS | MSR_UMS
nop
.endm
#else