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MIPS: math-emu: Fix prefx detection and COP1X function field definition

When running applications which contain the instruction "prefx" on FPU-less
CPUs, a message "Illegal instruction" will be seen. This instruction is
supposed to be ignored by the FPU emulator. However, its current detection
and function field encoding are incorrect. This patch fix the issue.

Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Reviewed-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Steven.Hill@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/6608/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Deng-Cheng Zhu Deng-Cheng Zhu 2014-03-07

Ralf Baechle Ralf Baechle 2014-03-11

changed arch
changed arch/mips
changed arch/mips/include
changed arch/mips/include/uapi
changed arch/mips/include/uapi/asm
changed arch/mips/include/uapi/asm/inst.h
changed arch/mips/math-emu
changed arch/mips/math-emu/cp1emu.c
arch
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arch/mips
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arch/mips/include
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arch/mips/include/uapi/asm/inst.h Diff Switch to side-by-side view
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arch/mips/math-emu
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arch/mips/math-emu/cp1emu.c Diff Switch to side-by-side view
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