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[not tested] add(r1, r2) with rex2

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MITSUNARI Shigeo 2023-10-12 18:12:41 +09:00
parent eb118504d2
commit e25b1cd627
1 changed files with 16 additions and 3 deletions
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19
xbyak/xbyak.h
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@ -576,6 +576,7 @@ public:
}
XBYAK_CONSTEXPR Kind getKind() const { return static_cast<Kind>(kind_); }
XBYAK_CONSTEXPR int getIdx() const { return idx_ & (EXT8BIT - 1); }
XBYAK_CONSTEXPR bool hasIdxBit(int bit) const { return idx_ & (1<<bit); }
XBYAK_CONSTEXPR bool isNone() const { return kind_ == 0; }
XBYAK_CONSTEXPR bool isMMX() const { return is(MMX); }
XBYAK_CONSTEXPR bool isXMM() const { return is(XMM); }
@ -1707,16 +1708,24 @@ private:
const Operand *p1 = &op1, *p2 = &op2;
if (p1->isMEM()) std::swap(p1, p2);
if (p1->isMEM()) XBYAK_THROW(ERR_BAD_COMBINATION)
// except movsx(16bit, 32/64bit)
uint8_t p66 = (op1.isBit(16) && !op2.isBit(i32e)) || (op2.isBit(16) && !op1.isBit(i32e)) ? 0x66 : 0;
if (p2->isMEM()) {
const Address& addr = p2->getAddress();
if (BIT == 64 && addr.is32bit()) db(0x67);
if (p66) db(p66);
rex = addr.getRex() | p1->getReg().getRex();
} else {
if (p66) db(p66);
if (op1.getIdx() >= 16 || op2.getIdx() >= 16) {
// rex2 : op1 = B, op2 = R
db(0xD5);
db(rex2p(0, op2.hasIdxBit(4),0, op1.hasIdxBit(4), op1.isREG(64), op2.hasIdxBit(3), 0, op1.hasIdxBit(3)));
return;
}
// ModRM(reg, base);
rex = op2.getReg().getRex(op1.getReg());
}
// except movsx(16bit, 32/64bit)
if ((op1.isBit(16) && !op2.isBit(i32e)) || (op2.isBit(16) && !op1.isBit(i32e))) db(0x66);
if (rex) db(rex);
}
enum AVXtype {
@ -2919,7 +2928,11 @@ public:
size -= len;
}
}
// make rex2 prefix
static inline uint8_t rex2p(int M0, int R4, int X4, int B4, int W, int R3, int X3, int B3)
{
return uint8_t((M0<<7) | (R4<<6) | (X4<<5) | (B4<<4) | (W<<3) | (R3<<2) | (X3<<1) | B3);
}
#ifndef XBYAK_DONT_READ_LIST
#include "xbyak_mnemonic.h"
/*