kernel.git/arch/powerpc/math-emu, branch linux-2.6.37.y

powerpc/Makefiles: Change to new flag variables

2010-10-13T05:19:22Z

Replace EXTRA_CFLAGS with ccflags-y and EXTRA_AFLAGS with asflags-y. Signed-off-by: matt mooney Signed-off-by: Benjamin Herrenschmidt

powerpc/math-emu: Fix efp dependence

2009-03-11T11:00:08Z

There is no dependece between efp and math-emu. But when disable math-emu the efp code cannot be built. Signed-off-by: Liu Yu Signed-off-by: Kumar Gala

powerpc: Add SPE/EFP math emulation for E500v1/v2 processors.

2008-12-03T14:19:16Z

This patch add the handlers of SPE/EFP exceptions. The code is used to emulate float point arithmetic, when MSR(SPE) is enabled and receive EFP data interrupt or EFP round interrupt. This patch has no conflict with or dependence on FP math-emu. The code has been tested by TestFloat. Now the code doesn't support SPE/EFP instructions emulation (it won't be called when receive program interrupt), but it could be easily added. Signed-off-by: Liu Yu Signed-off-by: Kumar Gala

powerpc/math-emu: Remove redundant 'ret'

2008-12-03T14:19:15Z

FP_DECL_EX is already used, so ret is redundant. And FP_SET_EXCEPTION will add status into return value. Signed-off-by: Liu Yu Signed-off-by: Kumar Gala

powerpc/math-emu: Use kernel generic math-emu code

2008-10-01T13:40:07Z

The math emulation code is centered around a set of generic macros that provide the core of the emulation that are shared by the various architectures and other projects (like glibc). Each arch implements its own sfp-machine.h to specific various arch specific details. For historic reasons that are now lost the powerpc math-emu code had its own version of the common headers. This moves us to using the kernel generic version and thus getting fixes when those are updated. Also cleaned up exception/error reporting from the FP emulation functions. Signed-off-by: Kumar Gala

powerpc: Add macros to access floating point registers in thread_struct.

2008-07-01T01:28:43Z

We are going to change where the floating point registers are stored in the thread_struct, so in preparation add some macros to access the floating point registers. Update all code to use these new macros. Signed-off-by: Michael Neuling Signed-off-by: Paul Mackerras

[POWERPC] Replace remaining FUNCTION occurrences

2008-04-01T09:43:09Z

__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[POWERPC] Fix carry bug in 128-bit unsigned integer adding

2008-01-24T01:34:21Z

Synchronize it to the definition in include/math-emu/op-4.h for short term. Signed-off-by: Liu Yu Signed-off-by: Kumar Gala

[POWERPC] Fix rounding bug in emulation for double float operating

2007-12-14T04:59:00Z

This patch fixes rounding bug in emulation for double float operating on PowerPC platform. When pack double float operand, it need to truncate the tail due to the limited precision. If the truncated part is not zero, the last bit of work bit (totally 3 bits) need to '|' 1. This patch is completed in _FP_FRAC_SRS_2(X,N,sz) (arch/powerpc/math-emu/op-2.h). Originally the code leftwards rotates the operand to just keep the truncated part, then check whether it is zero. However, the number it rotates is not correct when N is not smaller than _FP_W_TYPE_SIZE, and it will cause the work bit '|' 1 in the improper case. This patch fixes this issue. Signed-off-by: Liu Yu Signed-off-by: Kumar Gala

[POWERPC] Fix handling of stfiwx math emulation

2007-10-16T14:05:24Z

Its legal for the stfiwx instruction to have RA = 0 as part of its effective address calculation. This is illegal for all other XE form instructions. Add code to compute the proper effective address for stfiwx if RA = 0 rather than treating it as illegal. Signed-off-by: Kumar Gala