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target-sparc: Implement BMASK/BSHUFFLE.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-10-18 09:24:43 -07:00
parent add545ab11
commit 793a137a41
3 changed files with 40 additions and 4 deletions
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29
target-sparc/vis_helper.c
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@ -470,3 +470,32 @@ uint32_t helper_fpackfix(uint64_t gsr, uint64_t rs2)
return ret;
}
uint64 helper_bshuffle(uint64_t gsr, uint64_t src1, uint64_t src2)
{
union {
uint64_t ll[2];
uint8_t b[16];
} s;
VIS64 r;
uint32_t i, mask, host;
/* Set up S such that we can index across all of the bytes. */
#ifdef HOST_WORDS_BIGENDIAN
s.ll[0] = src1;
s.ll[1] = src2;
host = 0;
#else
s.ll[1] = src1;
s.ll[0] = src2;
host = 15;
#endif
mask = gsr >> 32;
for (i = 0; i < 8; ++i) {
unsigned e = (mask >> (28 - i*4)) & 0xf;
r.VIS_B64(i) = s.b[e ^ host];
}
return r.ll;
}