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implement moveZRR and moveZMR

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This commit is contained in:
Joel Dice 2009-02-28 15:00:12 -07:00
parent 60c4bede39
commit 5a8ffcd79b
1 changed files with 52 additions and 13 deletions
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65
src/powerpc.cpp
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@ -53,9 +53,10 @@ inline int MDS(int op, int rs, int ra, int rb, int mb, int xo, int rc) { return
// INSTRUCTIONS
inline int lbz(int rt, int ra, int i) { return D(34, rt, ra, i); }
inline int lbzx(int rt, int ra, int rb) { return X(34, rt, ra, rb, 87, 0); }
inline int lhz(int rt, int ra, int i) { return D(40, rt, ra, i); }
inline int lha(int rt, int ra, int i) { return D(42, rt, ra, i); }
inline int lhax(int rt, int ra, int rb) { return X(31, rt, ra, rb, 343, 0); }
inline int lhz(int rt, int ra, int i) { return D(40, rt, ra, i); }
inline int lhzx(int rt, int ra, int rb) { return X(31, rt, ra, rb, 279, 0); }
inline int lwz(int rt, int ra, int i) { return D(32, rt, ra, i); }
inline int lwzx(int rt, int ra, int rb) { return X(31, rt, ra, rb, 23, 0); }
inline int stb(int rs, int ra, int i) { return D(38, rs, ra, i); }
@ -588,6 +589,21 @@ moveRR(Context* c, unsigned srcSize, Assembler::Register* src,
issue(c, mr(dst->low, src->low));
}
break;
default: abort(c);
}
}
void
moveZRR(Context* c, unsigned srcSize, Assembler::Register* src,
unsigned, Assembler::Register* dst)
{
switch (srcSize) {
case 2:
issue(c, andi(dst->low, src->low, 0xFFFF));
break;
default: abort(c);
}
}
@ -794,7 +810,7 @@ moveAndUpdateRM(Context* c, unsigned srcSize, Assembler::Register* src,
void
load(Context* c, unsigned srcSize, int base, int offset, int index,
unsigned scale, unsigned dstSize, Assembler::Register* dst,
bool preserveIndex)
bool preserveIndex, bool signExtend)
{
if (index != NoRegister) {
bool release;
@ -804,22 +820,28 @@ load(Context* c, unsigned srcSize, int base, int offset, int index,
switch (srcSize) {
case 1:
issue(c, lbzx(dst->low, base, normalized));
moveRR(c, 1, dst, BytesPerWord, dst);
if (signExtend) {
issue(c, extsb(dst->low, dst->low));
}
break;
case 2:
issue(c, lhax(dst->low, base, normalized));
if (signExtend) {
issue(c, lhax(dst->low, base, normalized));
} else {
issue(c, lhzx(dst->low, base, normalized));
}
break;
case 4:
case 8: {
if (srcSize == 4 and dstSize == 8) {
load(c, 4, base, 0, normalized, 1, 4, dst, preserveIndex);
load(c, 4, base, 0, normalized, 1, 4, dst, preserveIndex, false);
moveRR(c, 4, dst, 8, dst);
} else if (srcSize == 8 and dstSize == 8) {
Assembler::Register dstHigh(dst->high);
load(c, 4, base, 0, normalized, 1, 4, &dstHigh, preserveIndex);
load(c, 4, base, 4, normalized, 1, 4, dst, preserveIndex);
load(c, 4, base, 0, normalized, 1, 4, &dstHigh, preserveIndex, false);
load(c, 4, base, 4, normalized, 1, 4, dst, preserveIndex, false);
} else {
issue(c, lwzx(dst->low, base, offset));
}
@ -833,11 +855,17 @@ load(Context* c, unsigned srcSize, int base, int offset, int index,
switch (srcSize) {
case 1:
issue(c, lbz(dst->low, base, offset));
issue(c, extsb(dst->low, dst->low));
if (signExtend) {
issue(c, extsb(dst->low, dst->low));
}
break;
case 2:
issue(c, lha(dst->low, base, offset));
if (signExtend) {
issue(c, lha(dst->low, base, offset));
} else {
issue(c, lha(dst->low, base, offset));
}
break;
case 4:
@ -846,12 +874,12 @@ load(Context* c, unsigned srcSize, int base, int offset, int index,
case 8: {
if (srcSize == 4 and dstSize == 8) {
load(c, 4, base, offset, NoRegister, 1, 4, dst, false);
load(c, 4, base, offset, NoRegister, 1, 4, dst, false, false);
moveRR(c, 4, dst, 8, dst);
} else if (srcSize == 8 and dstSize == 8) {
Assembler::Register dstHigh(dst->high);
load(c, 4, base, offset, NoRegister, 1, 4, &dstHigh, false);
load(c, 4, base, offset + 4, NoRegister, 1, 4, dst, false);
load(c, 4, base, offset, NoRegister, 1, 4, &dstHigh, false, false);
load(c, 4, base, offset + 4, NoRegister, 1, 4, dst, false, false);
} else {
issue(c, lwzx(dst->low, base, offset));
}
@ -867,7 +895,15 @@ moveMR(Context* c, unsigned srcSize, Assembler::Memory* src,
unsigned dstSize, Assembler::Register* dst)
{
load(c, srcSize, src->base, src->offset, src->index, src->scale,
dstSize, dst, true);
dstSize, dst, true, true);
}
void
moveZMR(Context* c, unsigned srcSize, Assembler::Memory* src,
unsigned dstSize, Assembler::Register* dst)
{
load(c, srcSize, src->base, src->offset, src->index, src->scale,
dstSize, dst, true, false);
}
void
@ -1373,6 +1409,9 @@ populateTables(ArchitectureContext* c)
bo[index(Move, R, M)] = CAST2(moveRM);
bo[index(Move, A, R)] = CAST2(moveAR);
bo[index(MoveZ, R, R)] = CAST2(moveZRR);
bo[index(MoveZ, M, R)] = CAST2(moveZMR);
bo[index(Compare, R, R)] = CAST2(compareRR);
bo[index(Compare, C, R)] = CAST2(compareCR);
bo[index(Compare, R, M)] = CAST2(compareRM);