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implement multiplyCR and divideCR

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This commit is contained in:
Joel Dice 2008-11-08 15:42:26 -07:00
parent 61539bae31
commit decd24965a
2 changed files with 56 additions and 1 deletions
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1
src/compiler.cpp
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@ -2604,7 +2604,6 @@ class CompareEvent: public Event {
} else {
c->constantCompare = CompareNone;
fprintf(stderr, "compare %p and %p\n", first, second);
apply(c, Compare, size, first->source, size, second->source);
}

56
src/x86.cpp
View File

@ -1414,6 +1414,45 @@ multiplyRR(Context* c, unsigned aSize, Assembler::Register* a,
}
}
void
multiplyCR(Context* c, unsigned aSize, Assembler::Constant* a,
unsigned bSize, Assembler::Register* b)
{
assert(c, aSize == bSize);
if (BytesPerWord == 4 and aSize == 8) {
const uint32_t mask = ~((1 << rax) | (1 << rdx));
Assembler::Register tmp(c->client->acquireTemporary(mask),
c->client->acquireTemporary(mask));
moveCR(c, aSize, a, aSize, &tmp);
multiplyRR(c, aSize, &tmp, bSize, b);
c->client->releaseTemporary(tmp.low);
c->client->releaseTemporary(tmp.high);
} else {
int64_t v = a->value->value();
if (v != 1) {
if (isInt32(v)) {
if (bSize == 8) rex(c);
if (isInt8(v)) {
c->code.append(0x6b);
c->code.append(0xc0 | (b->low << 3) | b->low);
c->code.append(v);
} else {
c->code.append(0x69);
c->code.append(0xc0 | (b->low << 3) | b->low);
c->code.append4(v);
}
} else {
Assembler::Register tmp(c->client->acquireTemporary());
moveCR(c, aSize, a, aSize, &tmp);
multiplyRR(c, aSize, &tmp, bSize, b);
c->client->releaseTemporary(tmp.low);
}
}
}
}
void
longCompare(Context* c, Assembler::Operand* al, Assembler::Operand* ah,
Assembler::Operand* bl, Assembler::Operand* bh,
@ -1546,6 +1585,21 @@ divideRR(Context* c, unsigned aSize, Assembler::Register* a,
c->client->restore(rdx);
}
void
divideCR(Context* c, unsigned aSize, Assembler::Constant* a,
unsigned bSize, Assembler::Register* b)
{
assert(c, BytesPerWord == 8 or aSize == 4);
assert(c, aSize == bSize);
const uint32_t mask = ~((1 << rax) | (1 << rdx));
Assembler::Register tmp(c->client->acquireTemporary(mask));
moveCR(c, aSize, a, aSize, &tmp);
divideRR(c, aSize, &tmp, bSize, b);
c->client->releaseTemporary(tmp.low);
}
void
remainderRR(Context* c, unsigned aSize, Assembler::Register* a,
unsigned bSize, Assembler::Register* b)
@ -1848,8 +1902,10 @@ populateTables(ArchitectureContext* c)
bo[index(Xor, C, R)] = CAST2(xorCR);
bo[index(Multiply, R, R)] = CAST2(multiplyRR);
bo[index(Multiply, C, R)] = CAST2(multiplyCR);
bo[index(Divide, R, R)] = CAST2(divideRR);
bo[index(Divide, C, R)] = CAST2(divideCR);
bo[index(Remainder, R, R)] = CAST2(remainderRR);
bo[index(Remainder, C, R)] = CAST2(remainderCR);