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fix shift bugs

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This commit is contained in:
Joel Dice 2008-04-30 12:44:27 -06:00
parent bf08cc4c53
commit 7b809efd3f
1 changed files with 4 additions and 4 deletions
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8
src/x86.cpp
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@ -1626,7 +1626,7 @@ doShift(Context* c, void (*shift)
Assembler::Register cx(rcx); Assembler::Register cx(rcx);
moveRR(c, BytesPerWord, a, &cx); moveRR(c, BytesPerWord, a, &cx);
shift(c, size, &cx, b); shift(c, size, &cx, &target);
if (b->low == rcx) { if (b->low == rcx) {
moveRR(c, BytesPerWord, &target, b); moveRR(c, BytesPerWord, &target, b);
@ -1656,7 +1656,7 @@ doShift(Context* c, void (*shift)
c->client->restore(rcx); c->client->restore(rcx);
} else { } else {
rex(c); if (size == 8) rex(c);
if (v == 1) { if (v == 1) {
c->code.append(0xd1); c->code.append(0xd1);
c->code.append(type | b->low); c->code.append(type | b->low);
@ -1701,7 +1701,7 @@ shiftLeftRR(Context* c, unsigned size, Assembler::Register* a,
moveRR(c, 4, b, &bh); // 2 bytes moveRR(c, 4, b, &bh); // 2 bytes
xorRR(c, 4, b, b); // 2 bytes xorRR(c, 4, b, b); // 2 bytes
} else { } else {
rex(c); if (size == 8) rex(c);
c->code.append(0xd3); c->code.append(0xd3);
c->code.append(0xe0 | b->low); c->code.append(0xe0 | b->low);
} }
@ -1748,7 +1748,7 @@ shiftRightRR(Context* c, unsigned size, Assembler::Register* a,
c->code.append(0xf8 | b->high); c->code.append(0xf8 | b->high);
c->code.append(31); c->code.append(31);
} else { } else {
rex(c); if (size == 8) rex(c);
c->code.append(0xd3); c->code.append(0xd3);
c->code.append(0xf8 | b->low); c->code.append(0xf8 | b->low);
} }