eden-emu/xbyak
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unify parameter tNum and useRCX, useRDX

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MITSUNARI Shigeo 2013-04-17 05:21:50 +09:00
parent 3639843e27
commit b51d70c495
3 changed files with 53 additions and 37 deletions
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14
sample/stackframe.cpp
View file

@ -8,19 +8,21 @@
struct Code : public Xbyak::CodeGenerator {
Code()
{
Xbyak::util::StackFrame sf(this, 4);
Xbyak::util::StackFrame sf(this, 3);
mov(rax, sf.p(0));
add(rax, sf.p(1));
add(rax, sf.p(2));
add(rax, sf.p(3));
ret();
}
};
int main()
{
Code c;
int (*f)(int, int, int, int) = c.getCode<int(*) (int, int, int, int)>();
printf("%d\n", f(3, 5, 2, 9));
puts("ok");
int (*f)(int, int, int) = c.getCode<int(*) (int, int, int)>();
int ret = f(3, 5, 2);
if (ret == 3 + 5 + 2) {
puts("ok");
} else {
puts("ng");
}
}

12
test/sf_test.cpp
View file

@ -37,7 +37,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen5()
{
StackFrame sf(this, 4, 0, UseRCX);
StackFrame sf(this, 4, UseRCX);
xor_(rcx, rcx);
mov(rax, sf.p(0));
add(rax, sf.p(1));
@ -47,7 +47,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen6()
{
StackFrame sf(this, 4, 0, UseRCX | UseRDX);
StackFrame sf(this, 4, UseRCX | UseRDX);
xor_(rcx, rcx);
xor_(rdx, rdx);
mov(rax, sf.p(0));
@ -58,7 +58,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen7()
{
StackFrame sf(this, 3, 0, UseRCX | UseRDX);
StackFrame sf(this, 3, UseRCX | UseRDX);
xor_(rcx, rcx);
xor_(rdx, rdx);
mov(rax, sf.p(0));
@ -68,7 +68,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen8()
{
StackFrame sf(this, 4, 3, UseRCX | UseRDX);
StackFrame sf(this, 4, 3 | UseRCX | UseRDX);
xor_(rcx, rcx);
xor_(rdx, rdx);
mov(sf.t(0), 1);
@ -81,7 +81,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen9()
{
StackFrame sf(this, 4, 3, UseRCX | UseRDX, 4);
StackFrame sf(this, 4, 3 | UseRCX | UseRDX, 4);
xor_(rcx, rcx);
xor_(rdx, rdx);
mov(sf.t(0), 1);
@ -98,7 +98,7 @@ struct Code : public Xbyak::CodeGenerator {
void gen10()
{
StackFrame sf(this, 4, 8, UseRCX | UseRDX, 4);
StackFrame sf(this, 4, 8 | UseRCX | UseRDX, 4);
xor_(rcx, rcx);
xor_(rdx, rdx);
for (int i = 0; i < 8; i++) {

64
xbyak/xbyak_util.h
View file

@ -234,8 +234,10 @@ private:
};
#ifdef XBYAK64
struct StackFrame {
enum { UseRCX = 1, UseRDX = 2 };
const int UseRCX = 1 << 6;
const int UseRDX = 1 << 7;
class StackFrame {
#ifdef XBYAK64_WIN
static const int noSaveNum = 6;
#else
@ -244,12 +246,14 @@ struct StackFrame {
Xbyak::CodeGenerator *code_;
int pNum_;
int tNum_;
int useReg_;
bool useRcx_;
bool useRdx_;
int saveNum_;
int P_;
bool makeEpilog_;
Xbyak::Reg64 pTbl_[4];
Xbyak::Reg64 tTbl_[10];
public:
const Xbyak::Reg64& p(int pos) const
{
if (pos < 0 || pos >= pNum_) throw ERR_BAD_PARAMETER;
@ -273,27 +277,30 @@ struct StackFrame {
gt0, ..., gt(tNum-1)
rsp[0..8 * numQrod - 1]
*/
StackFrame(Xbyak::CodeGenerator *code, int pNum, int tNum = 0, int numQword = 0, int useReg = 0)
StackFrame(Xbyak::CodeGenerator *code, int pNum, int tNum = 0, int numQword = 0)
: code_(code)
, pNum_(pNum)
, tNum_(tNum)
, useReg_(useReg)
, tNum_(tNum & ~(UseRCX | UseRDX))
, useRcx_((tNum & UseRCX) != 0)
, useRdx_((tNum & UseRDX) != 0)
, saveNum_(0)
, P_(0)
, makeEpilog_(true)
{
using namespace Xbyak;
if (pNum > 4) throw ERR_BAD_PNUM;
const int allRegNum = pNum + tNum + (useReg & UseRCX) + (useReg & UseRDX);
if (allRegNum > 14) throw ERR_BAD_TNUM;
if (pNum < 0 || pNum > 4) throw ERR_BAD_PNUM;
const int allRegNum = pNum + tNum_ + (useRcx_ ? 1 : 0) + (useRdx_ ? 1 : 0);
if (allRegNum < pNum || allRegNum > 14) throw ERR_BAD_TNUM;
const Reg64& rsp = code->rsp;
const AddressFrame& ptr = code->ptr;
saveNum_ = std::max(0, allRegNum - noSaveNum);
saveNum_ = (std::max)(0, allRegNum - noSaveNum);
const int *tbl = getOrderTbl() + noSaveNum;
P_ = 8 * (saveNum_ + numQword);
P_ = saveNum_ + numQword;
if (P_ > 0 && (P_ & 1) == 0) P_++; // ensure (rsp % 16) == 0
P_ *= 8;
if (P_ > 0) code->sub(rsp, P_);
#ifdef XBYAK64
for (int i = 0; i < std::min(saveNum_, 4); i++) {
#ifdef XBYAK64_WIN
for (int i = 0; i < (std::min)(saveNum_, 4); i++) {
code->mov(ptr [rsp + P_ + (i + 1) * 8], Reg64(tbl[i]));
}
for (int i = 4; i < saveNum_; i++) {
@ -308,7 +315,7 @@ struct StackFrame {
for (int i = 0; i < pNum; i++) {
pTbl_[i] = Xbyak::Reg64(getRegIdx(pos));
}
for (int i = 0; i < tNum; i++) {
for (int i = 0; i < tNum_; i++) {
tTbl_[i] = Xbyak::Reg64(getRegIdx(pos));
}
}
@ -320,14 +327,14 @@ struct StackFrame {
const AddressFrame& ptr = code_->ptr;
const int *tbl = getOrderTbl() + noSaveNum;
#ifdef XBYAK64_WIN
for (int i = 0; i < std::min(saveNum_, 4); i++) {
for (int i = 0; i < (std::min)(saveNum_, 4); i++) {
code_->mov(Reg64(tbl[i]), ptr [rsp + P_ + (i + 1) * 8]);
}
for (int i = 4; i < saveNum_; i++) {
code_->mov(Reg64(tbl[i]), ptr [rsp + P_ - 8 * (saveNum_ - i)]);
}
#else
for (int i = 0; i <=saveNum_; i++) {
for (int i = 0; i < saveNum_; i++) {
code_->mov(Reg64(tbl[i]), ptr [rsp + P_ - 8 * (saveNum_ - i)]);
}
#endif
@ -335,6 +342,11 @@ struct StackFrame {
if (callRet) code_->ret();
}
~StackFrame()
{
if (makeEpilog_) close();
}
private:
const int *getOrderTbl() const
{
using namespace Xbyak;
@ -354,20 +366,22 @@ struct StackFrame {
using namespace Xbyak;
const int *tbl = getOrderTbl();
int r = tbl[pos++];
if (useReg_ & UseRCX) {
if (r == Operand::RCX) { return Operand::R10; }
if (r == Operand::R10) { return tbl[pos++]; }
if (useRcx_) {
if (r == Operand::RCX) {
code_->mov(code_->r10, code_->rcx);
return Operand::R10;
}
if (r == Operand::R10) { r = tbl[pos++]; }
}
if (useReg_ & UseRDX) {
if (r == Operand::RDX) { return Operand::R11; }
if (useRdx_) {
if (r == Operand::RDX) {
code_->mov(code_->r11, code_->rdx);
return Operand::R11;
}
if (r == Operand::R11) { return tbl[pos++]; }
}
return r;
}
~StackFrame()
{
if (makeEpilog_) close();
}
};
#endif