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target/mips: Fix emulation of ILVR.<B|H|W> on big endian host

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Fix emulation of ILVR.<B|H|W> on big endian host by applying
mapping of data element indexes from one endian to another.

Backports commit 14f5d874bcd533054648bb7cc767c7169eaf2f1c from qemu
This commit is contained in:
Aleksandar Markovic 2019-06-30 20:03:21 -04:00 committed by Lioncash
parent f7fc20c9ee
commit 977e53b921
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 37 additions and 0 deletions
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37
qemu/target/mips/msa_helper.c
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@ -2001,6 +2001,24 @@ void helper_msa_ilvr_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
switch (df) {
case DF_BYTE:
#if defined(TARGET_WORDS_BIGENDIAN)
pwd->b[8] = pws->b[0];
pwd->b[9] = pwt->b[0];
pwd->b[10] = pws->b[1];
pwd->b[11] = pwt->b[1];
pwd->b[12] = pws->b[2];
pwd->b[13] = pwt->b[2];
pwd->b[14] = pws->b[3];
pwd->b[15] = pwt->b[3];
pwd->b[0] = pws->b[4];
pwd->b[1] = pwt->b[4];
pwd->b[2] = pws->b[5];
pwd->b[3] = pwt->b[5];
pwd->b[4] = pws->b[6];
pwd->b[5] = pwt->b[6];
pwd->b[6] = pws->b[7];
pwd->b[7] = pwt->b[7];
#else
pwd->b[15] = pws->b[7];
pwd->b[14] = pwt->b[7];
pwd->b[13] = pws->b[6];
@ -2017,8 +2035,19 @@ void helper_msa_ilvr_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
pwd->b[2] = pwt->b[1];
pwd->b[1] = pws->b[0];
pwd->b[0] = pwt->b[0];
#endif
break;
case DF_HALF:
#if defined(TARGET_WORDS_BIGENDIAN)
pwd->h[4] = pws->h[0];
pwd->h[5] = pwt->h[0];
pwd->h[6] = pws->h[1];
pwd->h[7] = pwt->h[1];
pwd->h[0] = pws->h[2];
pwd->h[1] = pwt->h[2];
pwd->h[2] = pws->h[3];
pwd->h[3] = pwt->h[3];
#else
pwd->h[7] = pws->h[3];
pwd->h[6] = pwt->h[3];
pwd->h[5] = pws->h[2];
@ -2027,12 +2056,20 @@ void helper_msa_ilvr_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
pwd->h[2] = pwt->h[1];
pwd->h[1] = pws->h[0];
pwd->h[0] = pwt->h[0];
#endif
break;
case DF_WORD:
#if defined(TARGET_WORDS_BIGENDIAN)
pwd->w[2] = pws->w[0];
pwd->w[3] = pwt->w[0];
pwd->w[0] = pws->w[1];
pwd->w[1] = pwt->w[1];
#else
pwd->w[3] = pws->w[1];
pwd->w[2] = pwt->w[1];
pwd->w[1] = pws->w[0];
pwd->w[0] = pwt->w[0];
#endif
break;
case DF_DOUBLE:
pwd->d[1] = pws->d[0];