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disasm: Add ZMM vsib

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ZMM registers can be used for vsib index and the number of registers
has been increased to 32.

Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>
This commit is contained in:
Jin Kyu Song 2013-11-15 13:20:55 -08:00
parent 6b29602bf4
commit 6076e8f335
1 changed files with 12 additions and 4 deletions
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16
disasm.c
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@ -406,18 +406,24 @@ static uint8_t *do_ea(uint8_t *data, int modrm, int asize,
if (rm == 4) { /* process SIB */
uint8_t vsib_hi = 0;
scale = (sib >> 6) & 03;
index = (sib >> 3) & 07;
base = sib & 07;
op->scale = 1 << scale;
if (segsize == 64) {
vsib_hi = (rex & REX_X ? 8 : 0) |
(evex[2] & EVEX_P2VP ? 0 : 16);
}
if (type == EA_XMMVSIB)
op->indexreg = nasm_rd_xmmreg[index | ((rex & REX_X) ? 8 : 0)];
op->indexreg = nasm_rd_xmmreg[index | vsib_hi];
else if (type == EA_YMMVSIB)
op->indexreg = nasm_rd_ymmreg[index | ((rex & REX_X) ? 8 : 0)];
op->indexreg = nasm_rd_ymmreg[index | vsib_hi];
else if (type == EA_ZMMVSIB)
op->indexreg = nasm_rd_zmmreg[index | ((rex & REX_X) ? 8 : 0)];
op->indexreg = nasm_rd_zmmreg[index | vsib_hi];
else if (index == 4 && !(rex & REX_X))
op->indexreg = -1; /* ESP/RSP cannot be an index */
else if (a64)
@ -749,7 +755,9 @@ static int matches(const struct itemplate *t, uint8_t *data,
return false;
if (c == 0250) {
if ((prefix->vex_v != 0) || !(prefix->evex[2] & EVEX_P2VP))
if ((prefix->vex_v != 0) ||
(!(prefix->evex[2] & EVEX_P2VP) &&
((eat < EA_XMMVSIB) || (eat > EA_ZMMVSIB))))
return false;
} else {
opx->segment |= SEG_RMREG;