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Date: Sun, 21 Sep 2008 11:20:00 +0300
From: "Blue Swirl" <blauwirbel@gmail.com>
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Subject: [Qemu-devel] x86 MMX register access problem seen on Sparc host
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To: Fabrice Bellard <fabrice@bellard.org>, qemu-devel <qemu-devel@nongnu.org>

Hi,

I get these warnings when compiling i386 targets on Sparc host using a
gcc 4.3 series compiler:
/src/qemu/target-i386/ops_sse.h: In function 'helper_pmovmskb_mmx':
/src/qemu/target-i386/ops_sse.h:982: warning: array subscript is above
array bounds
etc.

The first line is the following:
    val |= (s->XMM_B(0) >> 7);

In cpu.h, the macro is defined on big endian host as
#define XMM_B(n) _b[15 - (n)]

But the type of Reg argument is MMXReg for pmovmskb_mmx and then the
_b array has only 8 items.