///////////////////////////////////////////////////////////////////////// // $Id: string.cc,v 1.63 2008-08-03 19:53:09 sshwarts Exp $ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001 MandrakeSoft S.A. // // MandrakeSoft S.A. // 43, rue d'Aboukir // 75002 Paris - France // http://www.linux-mandrake.com/ // http://www.mandrakesoft.com/ // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ///////////////////////////////////////////////////////////////////////// #define NEED_CPU_REG_SHORTCUTS 1 #include "bochs.h" #include "cpu.h" #define LOG_THIS BX_CPU_THIS_PTR #if BX_SUPPORT_X86_64==0 #define RSI ESI #define RDI EDI #define RAX EAX #define RCX ECX #endif // // Repeat Speedups methods // #if BX_SupportRepeatSpeedups Bit32u BX_CPU_C::FastRepMOVSB(bxInstruction_c *i, unsigned srcSeg, bx_address srcOff, unsigned dstSeg, bx_address dstOff, Bit32u count) { Bit32u bytesFitSrc, bytesFitDst; signed int pointerDelta; bx_address laddrDst, laddrSrc; Bit8u *hostAddrSrc, *hostAddrDst; bx_segment_reg_t *srcSegPtr = &BX_CPU_THIS_PTR sregs[srcSeg]; if (!(srcSegPtr->cache.valid & SegAccessROK4G)) return 0; bx_segment_reg_t *dstSegPtr = &BX_CPU_THIS_PTR sregs[dstSeg]; if (!(dstSegPtr->cache.valid & SegAccessWOK4G)) return 0; laddrSrc = BX_CPU_THIS_PTR get_laddr(srcSeg, srcOff); #if BX_SupportGuest2HostTLB hostAddrSrc = v2h_read_byte(laddrSrc, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrSrc; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrSrc = dtranslate_linear(laddrSrc, CPL, BX_READ); } else { paddrSrc = laddrSrc; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrSrc = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrSrc), BX_READ, DATA_ACCESS); #endif if (! hostAddrSrc) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many bytes can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. bytesFitSrc = 1 + PAGE_OFFSET(laddrSrc); bytesFitDst = 1 + PAGE_OFFSET(laddrDst); pointerDelta = (signed int) -1; } else { // Counting upward. bytesFitSrc = 0x1000 - PAGE_OFFSET(laddrSrc); bytesFitDst = 0x1000 - PAGE_OFFSET(laddrDst); pointerDelta = (signed int) 1; } // Restrict word count to the number that will fit in either // source or dest pages. if (count > bytesFitSrc) count = bytesFitSrc; if (count > bytesFitDst) count = bytesFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jcache.valid & SegAccessROK4G)) return 0; bx_segment_reg_t *dstSegPtr = &BX_CPU_THIS_PTR sregs[dstSeg]; if (!(dstSegPtr->cache.valid & SegAccessWOK4G)) return 0; laddrSrc = BX_CPU_THIS_PTR get_laddr(srcSeg, srcOff); #if BX_SupportGuest2HostTLB hostAddrSrc = v2h_read_byte(laddrSrc, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrSrc; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrSrc = dtranslate_linear(laddrSrc, CPL, BX_READ); } else { paddrSrc = laddrSrc; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrSrc = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrSrc), BX_READ, DATA_ACCESS); #endif if (! hostAddrSrc) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many words can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. // Note: 1st word must not cross page boundary. if (((laddrSrc & 0xfff) > 0xffe) || ((laddrDst & 0xfff) > 0xffe)) return 0; wordsFitSrc = (2 + PAGE_OFFSET(laddrSrc)) >> 1; wordsFitDst = (2 + PAGE_OFFSET(laddrDst)) >> 1; pointerDelta = (signed int) -2; } else { // Counting upward. wordsFitSrc = (0x1000 - PAGE_OFFSET(laddrSrc)) >> 1; wordsFitDst = (0x1000 - PAGE_OFFSET(laddrDst)) >> 1; pointerDelta = (signed int) 2; } // Restrict word count to the number that will fit in either // source or dest pages. if (count > wordsFitSrc) count = wordsFitSrc; if (count > wordsFitDst) count = wordsFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jcache.valid & SegAccessROK4G)) return 0; bx_segment_reg_t *dstSegPtr = &BX_CPU_THIS_PTR sregs[dstSeg]; if (!(dstSegPtr->cache.valid & SegAccessWOK4G)) return 0; laddrSrc = BX_CPU_THIS_PTR get_laddr(srcSeg, srcOff); #if BX_SupportGuest2HostTLB hostAddrSrc = v2h_read_byte(laddrSrc, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrSrc; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrSrc = dtranslate_linear(laddrSrc, CPL, BX_READ); } else { paddrSrc = laddrSrc; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrSrc = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrSrc), BX_READ, DATA_ACCESS); #endif if (! hostAddrSrc) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many dwords can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. // Note: 1st dword must not cross page boundary. if (((laddrSrc & 0xfff) > 0xffc) || ((laddrDst & 0xfff) > 0xffc)) return 0; dwordsFitSrc = (4 + PAGE_OFFSET(laddrSrc)) >> 2; dwordsFitDst = (4 + PAGE_OFFSET(laddrDst)) >> 2; pointerDelta = (signed int) -4; } else { // Counting upward. dwordsFitSrc = (0x1000 - PAGE_OFFSET(laddrSrc)) >> 2; dwordsFitDst = (0x1000 - PAGE_OFFSET(laddrDst)) >> 2; pointerDelta = (signed int) 4; } // Restrict dword count to the number that will fit in either // source or dest pages. if (count > dwordsFitSrc) count = dwordsFitSrc; if (count > dwordsFitDst) count = dwordsFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jcache.valid & SegAccessWOK4G) != SegAccessWOK4G) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many bytes can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. bytesFitDst = 1 + PAGE_OFFSET(laddrDst); pointerDelta = (signed int) -1; } else { // Counting upward. bytesFitDst = 0x1000 - PAGE_OFFSET(laddrDst); pointerDelta = (signed int) 1; } // Restrict word count to the number that will fit in either // source or dest pages. if (count > bytesFitDst) count = bytesFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jcache.valid & SegAccessWOK4G) != SegAccessWOK4G) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many words can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. // Note: 1st word must not cross page boundary. if ((laddrDst & 0xfff) > 0xffe) return 0; wordsFitDst = (2 + PAGE_OFFSET(laddrDst)) >> 1; pointerDelta = (signed int) -2; } else { // Counting upward. wordsFitDst = (0x1000 - PAGE_OFFSET(laddrDst)) >> 1; pointerDelta = (signed int) 2; } // Restrict word count to the number that will fit in either // source or dest pages. if (count > wordsFitDst) count = wordsFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jcache.valid & SegAccessWOK4G)) return 0; laddrDst = BX_CPU_THIS_PTR get_laddr(dstSeg, dstOff); #if BX_SupportGuest2HostTLB hostAddrDst = v2h_write_byte(laddrDst, BX_CPU_THIS_PTR user_pl); #else bx_phy_address paddrDst; if (BX_CPU_THIS_PTR cr0.get_PG()) { paddrDst = dtranslate_linear(laddrDst, CPL, BX_WRITE); } else { paddrDst = laddrDst; } // If we want to write directly into the physical memory array, // we need the A20 address. hostAddrDst = BX_MEM(0)->getHostMemAddr(BX_CPU_THIS, A20ADDR(paddrDst), BX_WRITE, DATA_ACCESS); #endif if (! hostAddrDst) return 0; // See how many dwords can fit in the rest of this page. if (BX_CPU_THIS_PTR get_DF()) { // Counting downward. // Note: 1st dword must not cross page boundary. if ((laddrDst & 0xfff) > 0xffc) return 0; dwordsFitDst = (4 + PAGE_OFFSET(laddrDst)) >> 2; pointerDelta = (signed int) -4; } else { // Counting upward. dwordsFitDst = (0x1000 - PAGE_OFFSET(laddrDst)) >> 2; pointerDelta = (signed int) 4; } // Restrict dword count to the number that will fit in either // source or dest pages. if (count > dwordsFitDst) count = dwordsFitDst; if (count > bx_pc_system.getNumCpuTicksLeftNextEvent()) count = bx_pc_system.getNumCpuTicksLeftNextEvent(); // If after all the restrictions, there is anything left to do... if (count) { // Transfer data directly using host addresses for (unsigned j=0; jas64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSB64_XbYb); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSB32_XbYb); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSB16_XbYb); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_MOVSW_XwYw(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSW64_XwYw); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSW32_XwYw); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSW16_XwYw); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_MOVSD_XdYd(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSD64_XdYd); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSD32_XdYd); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSD16_XdYd); } } #if BX_SUPPORT_X86_64 void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_MOVSQ_XqYq(bxInstruction_c *i) { if (i->as64L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSQ64_XqYq); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::MOVSQ32_XqYq); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } } #endif // // MOVSB/MOVSW/MOVSD/MOVSQ methods // // 16 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSB16_XbYb(bxInstruction_c *i) { Bit8u temp8 = read_virtual_byte_32(i->seg(), SI); write_virtual_byte_32(BX_SEG_REG_ES, DI, temp8); if (BX_CPU_THIS_PTR get_DF()) { /* decrement SI, DI */ SI--; DI--; } else { /* increment SI, DI */ SI++; DI++; } } // 32 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSB32_XbYb(bxInstruction_c *i) { Bit8u temp8; Bit32u incr = 1; #if (BX_SupportRepeatSpeedups) && (BX_DEBUGGER == 0) /* If conditions are right, we can transfer IO to physical memory * in a batch, rather than one instruction at a time */ if (i->repUsedL() && !BX_CPU_THIS_PTR async_event) { Bit32u byteCount = FastRepMOVSB(i, i->seg(), ESI, BX_SEG_REG_ES, EDI, ECX); if (byteCount) { // Decrement the ticks count by the number of iterations, minus // one, since the main cpu loop will decrement one. Also, // the count is predecremented before examined, so defintely // don't roll it under zero. BX_TICKN(byteCount-1); // Decrement eCX. Note, the main loop will decrement 1 also, so // decrement by one less than expected, like the case above. RCX = ECX - (byteCount-1); incr = byteCount; } else { temp8 = read_virtual_byte(i->seg(), ESI); write_virtual_byte(BX_SEG_REG_ES, EDI, temp8); } } else #endif { temp8 = read_virtual_byte(i->seg(), ESI); write_virtual_byte(BX_SEG_REG_ES, EDI, temp8); } if (BX_CPU_THIS_PTR get_DF()) { RSI = ESI - incr; RDI = EDI - incr; } else { RSI = ESI + incr; RDI = EDI + incr; } } #if BX_SUPPORT_X86_64 // 64 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSB64_XbYb(bxInstruction_c *i) { Bit8u temp8; Bit64u rsi = RSI; Bit64u rdi = RDI; temp8 = read_virtual_byte_64(i->seg(), rsi); write_virtual_byte_64(BX_SEG_REG_ES, rdi, temp8); if (BX_CPU_THIS_PTR get_DF()) { /* decrement RSI, RDI */ rsi--; rdi--; } else { /* increment RSI, RDI */ rsi++; rdi++; } RSI = rsi; RDI = rdi; } #endif /* 16 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSW16_XwYw(bxInstruction_c *i) { Bit16u si = SI; Bit16u di = DI; Bit16u temp16 = read_virtual_word_32(i->seg(), si); write_virtual_word_32(BX_SEG_REG_ES, di, temp16); if (BX_CPU_THIS_PTR get_DF()) { /* decrement SI, DI */ si -= 2; di -= 2; } else { /* increment SI, DI */ si += 2; di += 2; } SI = si; DI = di; } /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSW32_XwYw(bxInstruction_c *i) { Bit16u temp16; Bit32u esi = ESI; Bit32u edi = EDI; temp16 = read_virtual_word(i->seg(), esi); write_virtual_word(BX_SEG_REG_ES, edi, temp16); if (BX_CPU_THIS_PTR get_DF()) { esi -= 2; edi -= 2; } else { esi += 2; edi += 2; } // zero extension of RSI/RDI RSI = esi; RDI = edi; } #if BX_SUPPORT_X86_64 /* 16 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSW64_XwYw(bxInstruction_c *i) { Bit16u temp16; Bit64u rsi = RSI; Bit64u rdi = RDI; temp16 = read_virtual_word_64(i->seg(), rsi); write_virtual_word_64(BX_SEG_REG_ES, rdi, temp16); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 2; rdi -= 2; } else { rsi += 2; rdi += 2; } RSI = rsi; RDI = rdi; } #endif /* 32 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSD16_XdYd(bxInstruction_c *i) { Bit32u temp32; Bit16u si = SI; Bit16u di = DI; temp32 = read_virtual_dword_32(i->seg(), si); write_virtual_dword_32(BX_SEG_REG_ES, di, temp32); if (BX_CPU_THIS_PTR get_DF()) { si -= 4; di -= 4; } else { si += 4; di += 4; } SI = si; DI = di; } /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSD32_XdYd(bxInstruction_c *i) { Bit32u temp32; Bit32u incr = 4; Bit32u esi = ESI; Bit32u edi = EDI; #if (BX_SupportRepeatSpeedups) && (BX_DEBUGGER == 0) /* If conditions are right, we can transfer IO to physical memory * in a batch, rather than one instruction at a time. */ if (i->repUsedL() && !BX_CPU_THIS_PTR async_event) { Bit32u dwordCount = FastRepMOVSD(i, i->seg(), esi, BX_SEG_REG_ES, edi, ECX); if (dwordCount) { // Decrement the ticks count by the number of iterations, minus // one, since the main cpu loop will decrement one. Also, // the count is predecremented before examined, so defintely // don't roll it under zero. BX_TICKN(dwordCount-1); // Decrement eCX. Note, the main loop will decrement 1 also, so // decrement by one less than expected, like the case above. RCX = ECX - (dwordCount-1); incr = dwordCount << 2; // count * 4 } else { temp32 = read_virtual_dword(i->seg(), esi); write_virtual_dword(BX_SEG_REG_ES, edi, temp32); } } else #endif { temp32 = read_virtual_dword(i->seg(), esi); write_virtual_dword(BX_SEG_REG_ES, edi, temp32); } if (BX_CPU_THIS_PTR get_DF()) { esi -= incr; edi -= incr; } else { esi += incr; edi += incr; } // zero extension of RSI/RDI RSI = esi; RDI = edi; } #if BX_SUPPORT_X86_64 /* 32 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSD64_XdYd(bxInstruction_c *i) { Bit32u temp32; Bit64u rsi = RSI; Bit64u rdi = RDI; temp32 = read_virtual_dword_64(i->seg(), rsi); write_virtual_dword_64(BX_SEG_REG_ES, rdi, temp32); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 4; rdi -= 4; } else { rsi += 4; rdi += 4; } RSI = rsi; RDI = rdi; } /* 64 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSQ32_XqYq(bxInstruction_c *i) { Bit64u temp64; Bit32u esi = ESI; Bit32u edi = EDI; temp64 = read_virtual_qword_64(i->seg(), esi); write_virtual_qword_64(BX_SEG_REG_ES, edi, temp64); if (BX_CPU_THIS_PTR get_DF()) { esi -= 8; edi -= 8; } else { esi += 8; edi += 8; } // zero extension of RSI/RDI RSI = esi; RDI = edi; } /* 64 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVSQ64_XqYq(bxInstruction_c *i) { Bit64u temp64; Bit64u rsi = RSI; Bit64u rdi = RDI; temp64 = read_virtual_qword_64(i->seg(), rsi); write_virtual_qword_64(BX_SEG_REG_ES, rdi, temp64); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 8; rdi -= 8; } else { rsi += 8; rdi += 8; } RSI = rsi; RDI = rdi; } #endif // // REP CMPS methods // void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_CMPSB_XbYb(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSB64_XbYb); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSB32_XbYb); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSB16_XbYb); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_CMPSW_XwYw(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSW64_XwYw); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSW32_XwYw); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSW16_XwYw); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_CMPSD_XdYd(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSD64_XdYd); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSD32_XdYd); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSD16_XdYd); } } #if BX_SUPPORT_X86_64 void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_CMPSQ_XqYq(bxInstruction_c *i) { if (i->as64L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSQ64_XqYq); } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::CMPSQ32_XqYq); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI/RDI BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); } } #endif // // CMPSB/CMPSW/CMPSD/CMPSQ methods // /* 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSB16_XbYb(bxInstruction_c *i) { Bit8u op1_8, op2_8, diff_8; Bit16u si = SI; Bit16u di = DI; op1_8 = read_virtual_byte_32(i->seg(), si); op2_8 = read_virtual_byte_32(BX_SEG_REG_ES, di); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { si--; di--; } else { si++; di++; } DI = di; SI = si; } /* 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSB32_XbYb(bxInstruction_c *i) { Bit8u op1_8, op2_8, diff_8; Bit32u esi = ESI; Bit32u edi = EDI; op1_8 = read_virtual_byte(i->seg(), esi); op2_8 = read_virtual_byte(BX_SEG_REG_ES, edi); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { esi--; edi--; } else { esi++; edi++; } // zero extension of RSI/RDI RDI = edi; RSI = esi; } #if BX_SUPPORT_X86_64 /* 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSB64_XbYb(bxInstruction_c *i) { Bit8u op1_8, op2_8, diff_8; Bit64u rsi = RSI; Bit64u rdi = RDI; op1_8 = read_virtual_byte_64(i->seg(), rsi); op2_8 = read_virtual_byte_64(BX_SEG_REG_ES, rdi); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { rsi--; rdi--; } else { rsi++; rdi++; } RDI = rdi; RSI = rsi; } #endif /* 16 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSW16_XwYw(bxInstruction_c *i) { Bit16u op1_16, op2_16, diff_16; Bit16u si = SI; Bit16u di = DI; op1_16 = read_virtual_word_32(i->seg(), si); op2_16 = read_virtual_word_32(BX_SEG_REG_ES, di); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { si -= 2; di -= 2; } else { si += 2; di += 2; } DI = di; SI = si; } /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSW32_XwYw(bxInstruction_c *i) { Bit16u op1_16, op2_16, diff_16; Bit32u esi = ESI; Bit32u edi = EDI; op1_16 = read_virtual_word(i->seg(), esi); op2_16 = read_virtual_word(BX_SEG_REG_ES, edi); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { esi -= 2; edi -= 2; } else { esi += 2; edi += 2; } // zero extension of RSI/RDI RDI = edi; RSI = esi; } #if BX_SUPPORT_X86_64 /* 16 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSW64_XwYw(bxInstruction_c *i) { Bit16u op1_16, op2_16, diff_16; Bit64u rsi = RSI; Bit64u rdi = RDI; op1_16 = read_virtual_word_64(i->seg(), rsi); op2_16 = read_virtual_word_64(BX_SEG_REG_ES, rdi); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 2; rdi -= 2; } else { rsi += 2; rdi += 2; } RDI = rdi; RSI = rsi; } #endif /* 32 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSD16_XdYd(bxInstruction_c *i) { Bit32u op1_32, op2_32, diff_32; Bit16u si = SI; Bit16u di = DI; op1_32 = read_virtual_dword_32(i->seg(), si); op2_32 = read_virtual_dword_32(BX_SEG_REG_ES, di); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { si -= 4; di -= 4; } else { si += 4; di += 4; } DI = di; SI = si; } /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSD32_XdYd(bxInstruction_c *i) { Bit32u op1_32, op2_32, diff_32; Bit32u esi = ESI; Bit32u edi = EDI; op1_32 = read_virtual_dword(i->seg(), esi); op2_32 = read_virtual_dword(BX_SEG_REG_ES, edi); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { esi -= 4; edi -= 4; } else { esi += 4; edi += 4; } // zero extension of RSI/RDI RDI = edi; RSI = esi; } #if BX_SUPPORT_X86_64 /* 32 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSD64_XdYd(bxInstruction_c *i) { Bit32u op1_32, op2_32, diff_32; Bit64u rsi = RSI; Bit64u rdi = RDI; op1_32 = read_virtual_dword_64(i->seg(), rsi); op2_32 = read_virtual_dword_64(BX_SEG_REG_ES, rdi); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 4; rdi -= 4; } else { rsi += 4; rdi += 4; } RDI = rdi; RSI = rsi; } /* 64 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSQ32_XqYq(bxInstruction_c *i) { Bit64u op1_64, op2_64, diff_64; Bit32u esi = ESI; Bit32u edi = EDI; op1_64 = read_virtual_qword_64(i->seg(), esi); op2_64 = read_virtual_qword_64(BX_SEG_REG_ES, edi); diff_64 = op1_64 - op2_64; SET_FLAGS_OSZAPC_SUB_64(op1_64, op2_64, diff_64); if (BX_CPU_THIS_PTR get_DF()) { esi -= 8; edi -= 8; } else { esi += 8; edi += 8; } // zero extension of RSI/RDI RDI = edi; RSI = esi; } /* 64 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CMPSQ64_XqYq(bxInstruction_c *i) { Bit64u op1_64, op2_64, diff_64; Bit64u rsi = RSI; Bit64u rdi = RDI; op1_64 = read_virtual_qword_64(i->seg(), rsi); op2_64 = read_virtual_qword_64(BX_SEG_REG_ES, rdi); diff_64 = op1_64 - op2_64; SET_FLAGS_OSZAPC_SUB_64(op1_64, op2_64, diff_64); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 8; rdi -= 8; } else { rsi += 8; rdi += 8; } RDI = rdi; RSI = rsi; } #endif // // REP SCAS methods // void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_SCASB_ALXb(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASB64_ALXb); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASB32_ALXb); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASB16_ALXb); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_SCASW_AXXw(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASW64_AXXw); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASW32_AXXw); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASW16_AXXw); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_SCASD_EAXXd(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASD64_EAXXd); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASD32_EAXXd); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASD16_EAXXd); } } #if BX_SUPPORT_X86_64 void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_SCASQ_RAXXq(bxInstruction_c *i) { if (i->as64L()) { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASQ64_RAXXq); } else { BX_CPU_THIS_PTR repeat_ZFL(i, &BX_CPU_C::SCASQ32_RAXXq); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } } #endif // // SCASB/SCASW/SCASD/SCASQ methods // /* 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASB16_ALXb(bxInstruction_c *i) { Bit8u op1_8 = AL, op2_8, diff_8; Bit16u di = DI; op2_8 = read_virtual_byte_32(BX_SEG_REG_ES, di); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { di--; } else { di++; } DI = di; } /* 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASB32_ALXb(bxInstruction_c *i) { Bit8u op1_8 = AL, op2_8, diff_8; Bit32u edi = EDI; op2_8 = read_virtual_byte(BX_SEG_REG_ES, edi); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { edi--; } else { edi++; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 /* 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASB64_ALXb(bxInstruction_c *i) { Bit8u op1_8 = AL, op2_8, diff_8; Bit64u rdi = RDI; op2_8 = read_virtual_byte_64(BX_SEG_REG_ES, rdi); diff_8 = op1_8 - op2_8; SET_FLAGS_OSZAPC_SUB_8(op1_8, op2_8, diff_8); if (BX_CPU_THIS_PTR get_DF()) { rdi--; } else { rdi++; } RDI = rdi; } #endif /* 16 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASW16_AXXw(bxInstruction_c *i) { Bit16u op1_16 = AX, op2_16, diff_16; Bit16u di = DI; op2_16 = read_virtual_word_32(BX_SEG_REG_ES, di); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { di -= 2; } else { di += 2; } DI = di; } /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASW32_AXXw(bxInstruction_c *i) { Bit16u op1_16 = AX, op2_16, diff_16; Bit32u edi = EDI; op2_16 = read_virtual_word(BX_SEG_REG_ES, edi); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { edi -= 2; } else { edi += 2; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 /* 16 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASW64_AXXw(bxInstruction_c *i) { Bit16u op1_16 = AX, op2_16, diff_16; Bit64u rdi = RDI; op2_16 = read_virtual_word_64(BX_SEG_REG_ES, rdi); diff_16 = op1_16 - op2_16; SET_FLAGS_OSZAPC_SUB_16(op1_16, op2_16, diff_16); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 2; } else { rdi += 2; } RDI = rdi; } #endif /* 32 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASD16_EAXXd(bxInstruction_c *i) { Bit32u op1_32 = EAX, op2_32, diff_32; Bit16u di = DI; op2_32 = read_virtual_dword_32(BX_SEG_REG_ES, di); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { di -= 4; } else { di += 4; } DI = di; } /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASD32_EAXXd(bxInstruction_c *i) { Bit32u op1_32 = EAX, op2_32, diff_32; Bit32u edi = EDI; op2_32 = read_virtual_dword(BX_SEG_REG_ES, edi); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { edi -= 4; } else { edi += 4; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 /* 32 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASD64_EAXXd(bxInstruction_c *i) { Bit32u op1_32 = EAX, op2_32, diff_32; Bit64u rdi = RDI; op2_32 = read_virtual_dword_64(BX_SEG_REG_ES, rdi); diff_32 = op1_32 - op2_32; SET_FLAGS_OSZAPC_SUB_32(op1_32, op2_32, diff_32); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 4; } else { rdi += 4; } RDI = rdi; } /* 64 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASQ32_RAXXq(bxInstruction_c *i) { Bit64u op1_64 = RAX, op2_64, diff_64; Bit32u edi = EDI; op2_64 = read_virtual_qword_64(BX_SEG_REG_ES, edi); diff_64 = op1_64 - op2_64; SET_FLAGS_OSZAPC_SUB_64(op1_64, op2_64, diff_64); if (BX_CPU_THIS_PTR get_DF()) { edi -= 8; } else { edi += 8; } // zero extension of RDI RDI = edi; } /* 64 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::SCASQ64_RAXXq(bxInstruction_c *i) { Bit64u op1_64 = RAX, op2_64, diff_64; Bit64u rdi = RDI; op2_64 = read_virtual_qword_64(BX_SEG_REG_ES, rdi); diff_64 = op1_64 - op2_64; SET_FLAGS_OSZAPC_SUB_64(op1_64, op2_64, diff_64); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 8; } else { rdi += 8; } RDI = rdi; } #endif // // REP STOS methods // void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_STOSB_YbAL(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSB64_YbAL); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSB32_YbAL); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSB16_YbAL); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_STOSW_YwAX(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSW64_YwAX); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSW32_YwAX); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSW16_YwAX); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_STOSD_YdEAX(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSD64_YdEAX); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSD32_YdEAX); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSD16_YdEAX); } } #if BX_SUPPORT_X86_64 void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_STOSQ_YqRAX(bxInstruction_c *i) { if (i->as64L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSQ64_YqRAX); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::STOSQ32_YqRAX); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RDI); // always clear upper part of RDI } } #endif // // STOSB/STOSW/STOSD/STOSQ methods // // 16 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSB16_YbAL(bxInstruction_c *i) { Bit16u di = DI; write_virtual_byte_32(BX_SEG_REG_ES, di, AL); if (BX_CPU_THIS_PTR get_DF()) { di--; } else { di++; } DI = di; } // 32 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSB32_YbAL(bxInstruction_c *i) { Bit32u incr = 1; Bit32u edi = EDI; #if (BX_SupportRepeatSpeedups) && (BX_DEBUGGER == 0) /* If conditions are right, we can transfer IO to physical memory * in a batch, rather than one instruction at a time. */ if (i->repUsedL() && !BX_CPU_THIS_PTR async_event) { Bit32u byteCount = FastRepSTOSB(i, BX_SEG_REG_ES, edi, AL, ECX); if (byteCount) { // Decrement the ticks count by the number of iterations, minus // one, since the main cpu loop will decrement one. Also, // the count is predecremented before examined, so defintely // don't roll it under zero. BX_TICKN(byteCount-1); // Decrement eCX. Note, the main loop will decrement 1 also, so // decrement by one less than expected, like the case above. RCX = ECX - (byteCount-1); incr = byteCount; } else { write_virtual_byte(BX_SEG_REG_ES, edi, AL); } } else #endif { write_virtual_byte(BX_SEG_REG_ES, edi, AL); } if (BX_CPU_THIS_PTR get_DF()) { edi -= incr; } else { edi += incr; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 // 64 bit address size void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSB64_YbAL(bxInstruction_c *i) { Bit64u rdi = RDI; write_virtual_byte_64(BX_SEG_REG_ES, rdi, AL); if (BX_CPU_THIS_PTR get_DF()) { rdi--; } else { rdi++; } RDI = rdi; } #endif /* 16 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSW16_YwAX(bxInstruction_c *i) { Bit16u di = DI; write_virtual_word_32(BX_SEG_REG_ES, di, AX); if (BX_CPU_THIS_PTR get_DF()) { di -= 2; } else { di += 2; } DI = di; } /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSW32_YwAX(bxInstruction_c *i) { Bit32u edi = EDI; write_virtual_word(BX_SEG_REG_ES, edi, AX); if (BX_CPU_THIS_PTR get_DF()) { edi -= 2; } else { edi += 2; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSW64_YwAX(bxInstruction_c *i) { Bit64u rdi = RDI; write_virtual_word_64(BX_SEG_REG_ES, rdi, AX); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 2; } else { rdi += 2; } RDI = rdi; } #endif /* 32 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSD16_YdEAX(bxInstruction_c *i) { Bit16u di = DI; write_virtual_dword_32(BX_SEG_REG_ES, di, EAX); if (BX_CPU_THIS_PTR get_DF()) { di -= 4; } else { di += 4; } DI = di; } /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSD32_YdEAX(bxInstruction_c *i) { Bit32u edi = EDI; write_virtual_dword(BX_SEG_REG_ES, edi, EAX); if (BX_CPU_THIS_PTR get_DF()) { edi -= 4; } else { edi += 4; } // zero extension of RDI RDI = edi; } #if BX_SUPPORT_X86_64 /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSD64_YdEAX(bxInstruction_c *i) { Bit64u rdi = RDI; write_virtual_dword_64(BX_SEG_REG_ES, rdi, EAX); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 4; } else { rdi += 4; } RDI = rdi; } /* 64 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSQ32_YqRAX(bxInstruction_c *i) { Bit32u edi = EDI; write_virtual_qword_64(BX_SEG_REG_ES, edi, RAX); if (BX_CPU_THIS_PTR get_DF()) { edi -= 8; } else { edi += 8; } // zero extension of RDI RDI = edi; } /* 64 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::STOSQ64_YqRAX(bxInstruction_c *i) { Bit64u rdi = RDI; write_virtual_qword_64(BX_SEG_REG_ES, rdi, RAX); if (BX_CPU_THIS_PTR get_DF()) { rdi -= 8; } else { rdi += 8; } RDI = rdi; } #endif // // REP LODS methods // void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_LODSB_ALXb(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSB64_ALXb); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSB32_ALXb); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSB16_ALXb); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_LODSW_AXXw(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSW64_AXXw); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSW32_AXXw); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSW16_AXXw); } } void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_LODSD_EAXXd(bxInstruction_c *i) { #if BX_SUPPORT_X86_64 if (i->as64L()) BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSD64_EAXXd); else #endif if (i->as32L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSD32_EAXXd); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSD16_EAXXd); } } #if BX_SUPPORT_X86_64 void BX_CPP_AttrRegparmN(1) BX_CPU_C::REP_LODSQ_RAXXq(bxInstruction_c *i) { if (i->as64L()) { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSQ64_RAXXq); } else { BX_CPU_THIS_PTR repeat(i, &BX_CPU_C::LODSQ32_RAXXq); BX_CLEAR_64BIT_HIGH(BX_64BIT_REG_RSI); // always clear upper part of RSI } } #endif // // LODSB/LODSW/LODSD/LODSQ methods // /* 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSB16_ALXb(bxInstruction_c *i) { Bit16u si = SI; AL = read_virtual_byte_32(i->seg(), si); if (BX_CPU_THIS_PTR get_DF()) { si--; } else { si++; } SI = si; } /* 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSB32_ALXb(bxInstruction_c *i) { Bit32u esi = ESI; AL = read_virtual_byte(i->seg(), esi); if (BX_CPU_THIS_PTR get_DF()) { esi--; } else { esi++; } // zero extension of RSI RSI = esi; } #if BX_SUPPORT_X86_64 /* 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSB64_ALXb(bxInstruction_c *i) { Bit64u rsi = RSI; AL = read_virtual_byte_64(i->seg(), rsi); if (BX_CPU_THIS_PTR get_DF()) { rsi--; } else { rsi++; } RSI = rsi; } #endif /* 16 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSW16_AXXw(bxInstruction_c *i) { Bit16u si = SI; AX = read_virtual_word_32(i->seg(), si); if (BX_CPU_THIS_PTR get_DF()) { si -= 2; } else { si += 2; } SI = si; } /* 16 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSW32_AXXw(bxInstruction_c *i) { Bit32u esi = ESI; AX = read_virtual_word(i->seg(), esi); if (BX_CPU_THIS_PTR get_DF()) { esi -= 2; } else { esi += 2; } // zero extension of RSI RSI = esi; } #if BX_SUPPORT_X86_64 /* 16 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSW64_AXXw(bxInstruction_c *i) { Bit64u rsi = RSI; AX = read_virtual_word_64(i->seg(), rsi); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 2; } else { rsi += 2; } RSI = rsi; } #endif /* 32 bit opsize mode, 16 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSD16_EAXXd(bxInstruction_c *i) { Bit16u si = SI; RAX = read_virtual_dword_32(i->seg(), si); if (BX_CPU_THIS_PTR get_DF()) { si -= 4; } else { si += 4; } SI = si; } /* 32 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSD32_EAXXd(bxInstruction_c *i) { Bit32u esi = ESI; RAX = read_virtual_dword(i->seg(), esi); if (BX_CPU_THIS_PTR get_DF()) { esi -= 4; } else { esi += 4; } // zero extension of RSI RSI = esi; } #if BX_SUPPORT_X86_64 /* 32 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSD64_EAXXd(bxInstruction_c *i) { Bit64u rsi = RSI; RAX = read_virtual_dword_64(i->seg(), rsi); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 4; } else { rsi += 4; } RSI = rsi; } /* 64 bit opsize mode, 32 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSQ32_RAXXq(bxInstruction_c *i) { Bit32u esi = ESI; RAX = read_virtual_qword_64(i->seg(), esi); if (BX_CPU_THIS_PTR get_DF()) { esi -= 8; } else { esi += 8; } // zero extension of RSI RSI = esi; } /* 64 bit opsize mode, 64 bit address size */ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LODSQ64_RAXXq(bxInstruction_c *i) { Bit64u rsi = RSI; RAX = read_virtual_qword_64(i->seg(), rsi); if (BX_CPU_THIS_PTR get_DF()) { rsi -= 8; } else { rsi += 8; } RSI = rsi; } #endif