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powerpc/pseries: Simplify denormalization handler 

The following simplifies the denorm code by using macros to generate the long
stream of almost identical instructions.

This patch results in no changes to the output binary, but removes a lot of
lines of code.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling 2013-05-29 21:33:18 +00:00 committed by Benjamin Herrenschmidt
parent 6a60f9e7d8
commit d7c67fb1cf
1 changed files with 16 additions and 64 deletions
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80
arch/powerpc/kernel/exceptions-64s.S
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@ -454,38 +454,14 @@ BEGIN_FTR_SECTION
xori r10,r10,(MSR_FE0|MSR_FE1)
mtmsrd r10
sync
fmr 0,0
fmr 1,1
fmr 2,2
fmr 3,3
fmr 4,4
fmr 5,5
fmr 6,6
fmr 7,7
fmr 8,8
fmr 9,9
fmr 10,10
fmr 11,11
fmr 12,12
fmr 13,13
fmr 14,14
fmr 15,15
fmr 16,16
fmr 17,17
fmr 18,18
fmr 19,19
fmr 20,20
fmr 21,21
fmr 22,22
fmr 23,23
fmr 24,24
fmr 25,25
fmr 26,26
fmr 27,27
fmr 28,28
fmr 29,29
fmr 30,30
fmr 31,31
#define FMR2(n) fmr (n), (n) ; fmr n+1, n+1
#define FMR4(n) FMR2(n) ; FMR2(n+2)
#define FMR8(n) FMR4(n) ; FMR4(n+4)
#define FMR16(n) FMR8(n) ; FMR8(n+8)
#define FMR32(n) FMR16(n) ; FMR16(n+16)
FMR32(0)
FTR_SECTION_ELSE
/*
* To denormalise we need to move a copy of the register to itself.
@ -495,38 +471,14 @@ FTR_SECTION_ELSE
oris r10,r10,MSR_VSX@h
mtmsrd r10
sync
XVCPSGNDP(0,0,0)
XVCPSGNDP(1,1,1)
XVCPSGNDP(2,2,2)
XVCPSGNDP(3,3,3)
XVCPSGNDP(4,4,4)
XVCPSGNDP(5,5,5)
XVCPSGNDP(6,6,6)
XVCPSGNDP(7,7,7)
XVCPSGNDP(8,8,8)
XVCPSGNDP(9,9,9)
XVCPSGNDP(10,10,10)
XVCPSGNDP(11,11,11)
XVCPSGNDP(12,12,12)
XVCPSGNDP(13,13,13)
XVCPSGNDP(14,14,14)
XVCPSGNDP(15,15,15)
XVCPSGNDP(16,16,16)
XVCPSGNDP(17,17,17)
XVCPSGNDP(18,18,18)
XVCPSGNDP(19,19,19)
XVCPSGNDP(20,20,20)
XVCPSGNDP(21,21,21)
XVCPSGNDP(22,22,22)
XVCPSGNDP(23,23,23)
XVCPSGNDP(24,24,24)
XVCPSGNDP(25,25,25)
XVCPSGNDP(26,26,26)
XVCPSGNDP(27,27,27)
XVCPSGNDP(28,28,28)
XVCPSGNDP(29,29,29)
XVCPSGNDP(30,30,30)
XVCPSGNDP(31,31,31)
#define XVCPSGNDP2(n) XVCPSGNDP(n,n,n) ; XVCPSGNDP(n+1,n+1,n+1)
#define XVCPSGNDP4(n) XVCPSGNDP2(n) ; XVCPSGNDP2(n+2)
#define XVCPSGNDP8(n) XVCPSGNDP4(n) ; XVCPSGNDP4(n+4)
#define XVCPSGNDP16(n) XVCPSGNDP8(n) ; XVCPSGNDP8(n+8)
#define XVCPSGNDP32(n) XVCPSGNDP16(n) ; XVCPSGNDP16(n+16)
XVCPSGNDP32(0)
ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206)
mtspr SPRN_HSRR0,r11
mtcrf 0x80,r9