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aa42c69c67
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Kim Phillips aa42c69c67 [POWERPC] Add support for FP emulation for the e300c2 core 
The e300c2 has no FPU.  Its MSR[FP] is grounded to zero.  If an attempt
is made to execute a floating point instruction (including floating-point
load, store, or move instructions), the e300c2 takes a floating-point
unavailable interrupt.

This patch adds support for FP emulation on the e300c2 by declaring a
new CPU_FTR_FP_TAKES_FPUNAVAIL, where FP unavail interrupts are
intercepted and redirected to the ProgramCheck exception path for
correct emulation handling.

(If we run out of CPU_FTR bits we could look to reclaim this bit by adding
support to test the cpu_user_features for PPC_FEATURE_HAS_FPU instead)

It adds a nop to the exception path for 32-bit processors with a FPU.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2006-12-08 02:43:30 -06:00
..
acpi [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
asm-alpha [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-arm Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-07 15:40:39 -08:00
asm-arm26 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-avr32 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-07 15:40:39 -08:00
asm-cris [PATCH] include/asm-cris/: "extern inline" -> "static inline" 2006-12-07 08:39:45 -08:00
asm-frv [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-generic Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-h8300 [PATCH] include/asm-h8300/: "extern inline" -> "static inline" 2006-12-07 08:39:45 -08:00
asm-i386 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-ia64 Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6 2006-12-07 15:39:22 -08:00
asm-m32r [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-m68k [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-m68knommu [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-mips [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-parisc [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-powerpc [POWERPC] Add support for FP emulation for the e300c2 core 2006-12-08 02:43:30 -06:00
asm-ppc [PATCH] mm: pagefault_{disable,enable}() 2006-12-07 08:39:21 -08:00
asm-s390 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sh [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sh64 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sparc [PATCH] remove kernel syscalls 2006-12-07 08:39:37 -08:00
asm-sparc64 [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-um [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-v850 [PATCH] remove kernel syscalls 2006-12-07 08:39:37 -08:00
asm-x86_64 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-xtensa [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
crypto [CRYPTO] lib: table driven multiplications in GF(2^128) 2006-12-06 18:38:55 -08:00
keys
linux Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-07 15:40:39 -08:00
math-emu
media V4L/DVB (4666): Ensure the WM8775 driver is loaded generically for any board. 2006-10-03 15:13:48 -03:00
mtd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-10-01 17:55:53 +01:00
net Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2006-12-07 09:05:15 -08:00
pcmcia [PATCH] pcmcia: multifunction card handling fixes 2006-12-04 20:09:15 -05:00
rdma IB/cm: Fix automatic path migration support 2006-11-29 15:33:10 -08:00
rxrpc
scsi [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
sound Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-12-05 17:01:28 +00:00
video fix file specification in comments 2006-10-03 23:01:26 +02:00
Kbuild