3009 lines
92 KiB
C
3009 lines
92 KiB
C
/****************************************************************************
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*
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* Realmode X86 Emulator Library
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*
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* Copyright (C) 1996-1999 SciTech Software, Inc.
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* Copyright (C) David Mosberger-Tang
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* Copyright (C) 1999 Egbert Eich
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*
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* ========================================================================
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the authors not be used
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* in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The authors makes no
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* representations about the suitability of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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* ========================================================================
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*
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* Language: ANSI C
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* Environment: Any
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* Developer: Kendall Bennett
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*
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* Description: This file includes subroutines to implement the decoding
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* and emulation of all the x86 extended two-byte processor
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* instructions.
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*
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****************************************************************************/
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#include "x86emu/x86emui.h"
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#undef bswap_32
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#define bswap_32(x) (((x & 0xff000000) >> 24) | \
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((x & 0x00ff0000) >> 8) | \
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((x & 0x0000ff00) << 8) | \
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((x & 0x000000ff) << 24))
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/*----------------------------- Implementation ----------------------------*/
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/****************************************************************************
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PARAMETERS:
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op1 - Instruction op code
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REMARKS:
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Handles illegal opcodes.
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****************************************************************************/
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static void
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x86emuOp2_illegal_op(u8 op2)
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{
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START_OF_INSTR();
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DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
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TRACE_REGS();
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printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n",
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M.x86.R_CS, M.x86.R_IP - 2, op2);
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HALT_SYS();
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END_OF_INSTR();
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}
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#define xorl(a,b) ((a) && !(b)) || (!(a) && (b))
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0x31
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****************************************************************************/
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static void
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x86emuOp2_rdtsc(u8 X86EMU_UNUSED(op2))
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{
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#ifdef __HAS_LONG_LONG__
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static u64 counter = 0;
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#else
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static u32 counter = 0;
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#endif
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counter += 0x10000;
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/* read timestamp counter */
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/*
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* Note that instead of actually trying to accurately measure this, we just
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* increase the counter by a fixed amount every time we hit one of these
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* instructions. Feel free to come up with a better method.
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*/
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START_OF_INSTR();
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DECODE_PRINTF("RDTSC\n");
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TRACE_AND_STEP();
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#ifdef __HAS_LONG_LONG__
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M.x86.R_EAX = counter & 0xffffffff;
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M.x86.R_EDX = counter >> 32;
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#else
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M.x86.R_EAX = counter;
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M.x86.R_EDX = 0;
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#endif
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0x80-0x8F
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****************************************************************************/
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static void
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x86emuOp2_long_jump(u8 op2)
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{
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s32 target;
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const char *name = NULL;
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int cond = 0;
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/* conditional jump to word offset. */
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START_OF_INSTR();
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switch (op2) {
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case 0x80:
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name = "JO\t";
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cond = ACCESS_FLAG(F_OF);
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break;
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case 0x81:
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name = "JNO\t";
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cond = !ACCESS_FLAG(F_OF);
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break;
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case 0x82:
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name = "JB\t";
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cond = ACCESS_FLAG(F_CF);
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break;
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case 0x83:
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name = "JNB\t";
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cond = !ACCESS_FLAG(F_CF);
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break;
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case 0x84:
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name = "JZ\t";
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cond = ACCESS_FLAG(F_ZF);
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break;
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case 0x85:
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name = "JNZ\t";
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cond = !ACCESS_FLAG(F_ZF);
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break;
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case 0x86:
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name = "JBE\t";
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cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
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break;
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case 0x87:
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name = "JNBE\t";
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cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
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break;
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case 0x88:
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name = "JS\t";
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cond = ACCESS_FLAG(F_SF);
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break;
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case 0x89:
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name = "JNS\t";
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cond = !ACCESS_FLAG(F_SF);
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break;
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case 0x8a:
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name = "JP\t";
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cond = ACCESS_FLAG(F_PF);
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break;
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case 0x8b:
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name = "JNP\t";
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cond = !ACCESS_FLAG(F_PF);
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break;
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case 0x8c:
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name = "JL\t";
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cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
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break;
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case 0x8d:
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name = "JNL\t";
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cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)));
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break;
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case 0x8e:
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name = "JLE\t";
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cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
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ACCESS_FLAG(F_ZF));
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break;
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case 0x8f:
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name = "JNLE\t";
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cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
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ACCESS_FLAG(F_ZF));
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break;
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}
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DECODE_PRINTF(name);
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(void) name;
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target = (s16) fetch_word_imm();
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target += (s16) M.x86.R_IP;
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DECODE_PRINTF2("%04x\n", target);
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TRACE_AND_STEP();
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if (cond)
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M.x86.R_IP = (u16) target;
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0x90-0x9F
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****************************************************************************/
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static void
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x86emuOp2_set_byte(u8 op2)
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{
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int mod, rl, rh;
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uint destoffset;
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u8 *destreg;
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const char *name = NULL;
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int cond = 0;
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START_OF_INSTR();
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switch (op2) {
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case 0x90:
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name = "SETO\t";
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cond = ACCESS_FLAG(F_OF);
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break;
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case 0x91:
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name = "SETNO\t";
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cond = !ACCESS_FLAG(F_OF);
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break;
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case 0x92:
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name = "SETB\t";
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cond = ACCESS_FLAG(F_CF);
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break;
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case 0x93:
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name = "SETNB\t";
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cond = !ACCESS_FLAG(F_CF);
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break;
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case 0x94:
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name = "SETZ\t";
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cond = ACCESS_FLAG(F_ZF);
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break;
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case 0x95:
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name = "SETNZ\t";
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cond = !ACCESS_FLAG(F_ZF);
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break;
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case 0x96:
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name = "SETBE\t";
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cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
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break;
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case 0x97:
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name = "SETNBE\t";
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cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
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break;
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case 0x98:
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name = "SETS\t";
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cond = ACCESS_FLAG(F_SF);
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break;
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case 0x99:
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name = "SETNS\t";
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cond = !ACCESS_FLAG(F_SF);
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break;
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case 0x9a:
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name = "SETP\t";
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cond = ACCESS_FLAG(F_PF);
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break;
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case 0x9b:
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name = "SETNP\t";
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cond = !ACCESS_FLAG(F_PF);
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break;
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case 0x9c:
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name = "SETL\t";
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cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
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break;
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case 0x9d:
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name = "SETNL\t";
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cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
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break;
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case 0x9e:
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name = "SETLE\t";
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cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
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ACCESS_FLAG(F_ZF));
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break;
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case 0x9f:
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name = "SETNLE\t";
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cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
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ACCESS_FLAG(F_ZF));
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break;
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}
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DECODE_PRINTF(name);
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(void) name;
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FETCH_DECODE_MODRM(mod, rh, rl);
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switch (mod) {
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case 0:
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destoffset = decode_rm00_address(rl);
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TRACE_AND_STEP();
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store_data_byte(destoffset, cond ? 0x01 : 0x00);
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break;
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case 1:
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destoffset = decode_rm01_address(rl);
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TRACE_AND_STEP();
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store_data_byte(destoffset, cond ? 0x01 : 0x00);
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break;
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case 2:
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destoffset = decode_rm10_address(rl);
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TRACE_AND_STEP();
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store_data_byte(destoffset, cond ? 0x01 : 0x00);
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break;
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case 3: /* register to register */
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destreg = DECODE_RM_BYTE_REGISTER(rl);
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TRACE_AND_STEP();
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*destreg = cond ? 0x01 : 0x00;
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break;
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}
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0xa0
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****************************************************************************/
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static void
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x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2))
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{
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START_OF_INSTR();
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DECODE_PRINTF("PUSH\tFS\n");
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TRACE_AND_STEP();
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push_word(M.x86.R_FS);
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0xa1
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****************************************************************************/
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static void
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x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2))
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{
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START_OF_INSTR();
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DECODE_PRINTF("POP\tFS\n");
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TRACE_AND_STEP();
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M.x86.R_FS = pop_word();
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS: CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output
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Handles opcode 0x0f,0xa2
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****************************************************************************/
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static void
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x86emuOp2_cpuid(u8 X86EMU_UNUSED(op2))
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{
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START_OF_INSTR();
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DECODE_PRINTF("CPUID\n");
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TRACE_AND_STEP();
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cpuid();
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DECODE_CLEAR_SEGOVR();
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END_OF_INSTR();
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}
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/****************************************************************************
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REMARKS:
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Handles opcode 0x0f,0xa3
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****************************************************************************/
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static void
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x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2))
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{
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int mod, rl, rh;
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uint srcoffset;
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int bit, disp;
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START_OF_INSTR();
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DECODE_PRINTF("BT\t");
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FETCH_DECODE_MODRM(mod, rh, rl);
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switch (mod) {
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case 0:
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if (M.x86.mode & SYSMODE_PREFIX_DATA) {
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u32 srcval;
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u32 *shiftreg;
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srcoffset = decode_rm00_address(rl);
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DECODE_PRINTF(",");
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shiftreg = DECODE_RM_LONG_REGISTER(rh);
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TRACE_AND_STEP();
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bit = *shiftreg & 0x1F;
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disp = (s16) * shiftreg >> 5;
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srcval = fetch_data_long(srcoffset + disp);
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CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
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}
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else {
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u16 srcval;
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u16 *shiftreg;
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srcoffset = decode_rm00_address(rl);
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DECODE_PRINTF(",");
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shiftreg = DECODE_RM_WORD_REGISTER(rh);
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TRACE_AND_STEP();
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bit = *shiftreg & 0xF;
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disp = (s16) * shiftreg >> 4;
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srcval = fetch_data_word(srcoffset + disp);
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CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
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}
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break;
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case 1:
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if (M.x86.mode & SYSMODE_PREFIX_DATA) {
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u32 srcval;
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u32 *shiftreg;
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srcoffset = decode_rm01_address(rl);
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DECODE_PRINTF(",");
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shiftreg = DECODE_RM_LONG_REGISTER(rh);
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TRACE_AND_STEP();
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bit = *shiftreg & 0x1F;
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disp = (s16) * shiftreg >> 5;
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srcval = fetch_data_long(srcoffset + disp);
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CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
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}
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else {
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u16 srcval;
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u16 *shiftreg;
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|
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srcoffset = decode_rm01_address(rl);
|
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DECODE_PRINTF(",");
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shiftreg = DECODE_RM_WORD_REGISTER(rh);
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TRACE_AND_STEP();
|
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bit = *shiftreg & 0xF;
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disp = (s16) * shiftreg >> 4;
|
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srcval = fetch_data_word(srcoffset + disp);
|
|
CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
|
|
}
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break;
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case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval;
|
|
u32 *shiftreg;
|
|
|
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srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
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srcval = fetch_data_long(srcoffset + disp);
|
|
CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
|
|
}
|
|
else {
|
|
u16 srcval;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
CONDITIONAL_SET_FLAG(srcval & (0x1 << bit), F_CF);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *srcreg, *shiftreg;
|
|
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit), F_CF);
|
|
}
|
|
else {
|
|
u16 *srcreg, *shiftreg;
|
|
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit), F_CF);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xa4
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint destoffset;
|
|
u8 shift;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("SHLD\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
*destreg = shld_long(*destreg, *shiftreg, shift);
|
|
}
|
|
else {
|
|
u16 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
*destreg = shld_word(*destreg, *shiftreg, shift);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xa5
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint destoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("SHLD\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shld_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shld_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = shld_long(*destreg, *shiftreg, M.x86.R_CL);
|
|
}
|
|
else {
|
|
u16 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = shld_word(*destreg, *shiftreg, M.x86.R_CL);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xa8
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("PUSH\tGS\n");
|
|
TRACE_AND_STEP();
|
|
push_word(M.x86.R_GS);
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xa9
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("POP\tGS\n");
|
|
TRACE_AND_STEP();
|
|
M.x86.R_GS = pop_word();
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xab
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
int bit, disp;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BTS\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval | mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, srcval | mask);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval | mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, srcval | mask);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval | mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, srcval | mask);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *srcreg, *shiftreg;
|
|
u32 mask;
|
|
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg |= mask;
|
|
}
|
|
else {
|
|
u16 *srcreg, *shiftreg;
|
|
u16 mask;
|
|
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg |= mask;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xac
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint destoffset;
|
|
u8 shift;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("SHLD\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, shift);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, shift);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
*destreg = shrd_long(*destreg, *shiftreg, shift);
|
|
}
|
|
else {
|
|
u16 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
DECODE_PRINTF2("%d\n", shift);
|
|
TRACE_AND_STEP();
|
|
*destreg = shrd_word(*destreg, *shiftreg, shift);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xad
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint destoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("SHLD\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 destval;
|
|
u32 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_long(destoffset);
|
|
destval = shrd_long(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_long(destoffset, destval);
|
|
}
|
|
else {
|
|
u16 destval;
|
|
u16 *shiftreg;
|
|
|
|
destoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
destval = fetch_data_word(destoffset);
|
|
destval = shrd_word(destval, *shiftreg, M.x86.R_CL);
|
|
store_data_word(destoffset, destval);
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = shrd_long(*destreg, *shiftreg, M.x86.R_CL);
|
|
}
|
|
else {
|
|
u16 *destreg, *shiftreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",CL\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = shrd_word(*destreg, *shiftreg, M.x86.R_CL);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xaf
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("IMUL\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
u32 res_lo, res_hi;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = fetch_data_long(srcoffset);
|
|
TRACE_AND_STEP();
|
|
imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval);
|
|
if (res_hi != 0) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u32) res_lo;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
u32 res;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
TRACE_AND_STEP();
|
|
res = (s16) * destreg * (s16) srcval;
|
|
if (res > 0xFFFF) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u16) res;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
u32 res_lo, res_hi;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = fetch_data_long(srcoffset);
|
|
TRACE_AND_STEP();
|
|
imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval);
|
|
if (res_hi != 0) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u32) res_lo;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
u32 res;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
TRACE_AND_STEP();
|
|
res = (s16) * destreg * (s16) srcval;
|
|
if (res > 0xFFFF) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u16) res;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
u32 res_lo, res_hi;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = fetch_data_long(srcoffset);
|
|
TRACE_AND_STEP();
|
|
imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) srcval);
|
|
if (res_hi != 0) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u32) res_lo;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
u32 res;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
TRACE_AND_STEP();
|
|
res = (s16) * destreg * (s16) srcval;
|
|
if (res > 0xFFFF) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u16) res;
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg, *srcreg;
|
|
u32 res_lo, res_hi;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
TRACE_AND_STEP();
|
|
imul_long_direct(&res_lo, &res_hi, (s32) * destreg, (s32) * srcreg);
|
|
if (res_hi != 0) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u32) res_lo;
|
|
}
|
|
else {
|
|
u16 *destreg, *srcreg;
|
|
u32 res;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
res = (s16) * destreg * (s16) * srcreg;
|
|
if (res > 0xFFFF) {
|
|
SET_FLAG(F_CF);
|
|
SET_FLAG(F_OF);
|
|
}
|
|
else {
|
|
CLEAR_FLAG(F_CF);
|
|
CLEAR_FLAG(F_OF);
|
|
}
|
|
*destreg = (u16) res;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb2
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rh, rl;
|
|
u16 *dstreg;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("LSS\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_SS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 1:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_SS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 2:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_SS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 3: /* register to register */
|
|
/* UNDEFINED! */
|
|
TRACE_AND_STEP();
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb3
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
int bit, disp;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BTR\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval & ~mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval & ~mask));
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval & ~mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval & ~mask));
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval & ~mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval & ~mask));
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *srcreg, *shiftreg;
|
|
u32 mask;
|
|
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg &= ~mask;
|
|
}
|
|
else {
|
|
u16 *srcreg, *shiftreg;
|
|
u16 mask;
|
|
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg &= ~mask;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb4
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rh, rl;
|
|
u16 *dstreg;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("LFS\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_FS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 1:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_FS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 2:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_FS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 3: /* register to register */
|
|
/* UNDEFINED! */
|
|
TRACE_AND_STEP();
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb5
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rh, rl;
|
|
u16 *dstreg;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("LGS\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_GS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 1:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_GS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 2:
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*dstreg = fetch_data_word(srcoffset);
|
|
M.x86.R_GS = fetch_data_word(srcoffset + 2);
|
|
break;
|
|
case 3: /* register to register */
|
|
/* UNDEFINED! */
|
|
TRACE_AND_STEP();
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb6
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("MOVZX\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = fetch_data_byte(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u8 *srcreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_BYTE_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = *srcreg;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u8 *srcreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_BYTE_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = *srcreg;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xb7
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
u16 *srcreg;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("MOVZX\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 1:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 2:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = fetch_data_word(srcoffset);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 3: /* register to register */
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = *srcreg;
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xba
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
int bit;
|
|
|
|
START_OF_INSTR();
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (rh) {
|
|
case 4:
|
|
DECODE_PRINTF("BT\t");
|
|
break;
|
|
case 5:
|
|
DECODE_PRINTF("BTS\t");
|
|
break;
|
|
case 6:
|
|
DECODE_PRINTF("BTR\t");
|
|
break;
|
|
case 7:
|
|
DECODE_PRINTF("BTC\t");
|
|
break;
|
|
default:
|
|
DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
|
|
TRACE_REGS();
|
|
printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n",
|
|
M.x86.R_CS, M.x86.R_IP - 3, op2, (mod << 6) | (rh << 3) | rl);
|
|
HALT_SYS();
|
|
}
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0x1F;
|
|
srcval = fetch_data_long(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_long(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_long(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_long(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0xF;
|
|
srcval = fetch_data_word(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_word(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_word(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_word(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0x1F;
|
|
srcval = fetch_data_long(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_long(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_long(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_long(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0xF;
|
|
srcval = fetch_data_word(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_word(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_word(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_word(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0x1F;
|
|
srcval = fetch_data_long(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_long(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_long(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_long(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u8 shift;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0xF;
|
|
srcval = fetch_data_word(srcoffset);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
store_data_word(srcoffset, srcval | mask);
|
|
break;
|
|
case 6:
|
|
store_data_word(srcoffset, srcval & ~mask);
|
|
break;
|
|
case 7:
|
|
store_data_word(srcoffset, srcval ^ mask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *srcreg;
|
|
u32 mask;
|
|
u8 shift;
|
|
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0x1F;
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
*srcreg |= mask;
|
|
break;
|
|
case 6:
|
|
*srcreg &= ~mask;
|
|
break;
|
|
case 7:
|
|
*srcreg ^= mask;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
u16 *srcreg;
|
|
u16 mask;
|
|
u8 shift;
|
|
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shift = fetch_byte_imm();
|
|
TRACE_AND_STEP();
|
|
bit = shift & 0xF;
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
switch (rh) {
|
|
case 5:
|
|
*srcreg |= mask;
|
|
break;
|
|
case 6:
|
|
*srcreg &= ~mask;
|
|
break;
|
|
case 7:
|
|
*srcreg ^= mask;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xbb
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
int bit, disp;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BTC\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval ^ mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval ^ mask));
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval ^ mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval ^ mask));
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, mask;
|
|
u32 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
disp = (s16) * shiftreg >> 5;
|
|
srcval = fetch_data_long(srcoffset + disp);
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_long(srcoffset + disp, srcval ^ mask);
|
|
}
|
|
else {
|
|
u16 srcval, mask;
|
|
u16 *shiftreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
disp = (s16) * shiftreg >> 4;
|
|
srcval = fetch_data_word(srcoffset + disp);
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(srcval & mask, F_CF);
|
|
store_data_word(srcoffset + disp, (u16) (srcval ^ mask));
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *srcreg, *shiftreg;
|
|
u32 mask;
|
|
|
|
srcreg = DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0x1F;
|
|
mask = (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg ^= mask;
|
|
}
|
|
else {
|
|
u16 *srcreg, *shiftreg;
|
|
u16 mask;
|
|
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
shiftreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
bit = *shiftreg & 0xF;
|
|
mask = (u16) (0x1 << bit);
|
|
CONDITIONAL_SET_FLAG(*srcreg & mask, F_CF);
|
|
*srcreg ^= mask;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xbc
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_bsf(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BSF\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 32; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 16; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 32; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 16; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 32; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 16; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcval = *DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 32; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcval = *DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 0; *dstreg < 16; (*dstreg)++)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xbd
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_bsr(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BSR\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 31; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm00_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 15; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 31; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm01_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 15; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_long(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 31; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcoffset = decode_rm10_address(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
srcval = fetch_data_word(srcoffset);
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 15; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 srcval, *dstreg;
|
|
|
|
srcval = *DECODE_RM_LONG_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_LONG_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 31; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
else {
|
|
u16 srcval, *dstreg;
|
|
|
|
srcval = *DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF(",");
|
|
dstreg = DECODE_RM_WORD_REGISTER(rh);
|
|
TRACE_AND_STEP();
|
|
CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
|
|
for (*dstreg = 15; *dstreg > 0; (*dstreg)--)
|
|
if ((srcval >> *dstreg) & 1)
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xbe
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("MOVSX\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = (s32) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = (s16) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = (s32) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = (s16) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = (s32) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u16 srcval;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = (s16) ((s8) fetch_data_byte(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
}
|
|
break;
|
|
case 3: /* register to register */
|
|
if (M.x86.mode & SYSMODE_PREFIX_DATA) {
|
|
u32 *destreg;
|
|
u8 *srcreg;
|
|
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_BYTE_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = (s32) ((s8) * srcreg);
|
|
}
|
|
else {
|
|
u16 *destreg;
|
|
u8 *srcreg;
|
|
|
|
destreg = DECODE_RM_WORD_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_BYTE_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = (s16) ((s8) * srcreg);
|
|
}
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Handles opcode 0x0f,0xbf
|
|
****************************************************************************/
|
|
static void
|
|
x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
int mod, rl, rh;
|
|
uint srcoffset;
|
|
u32 *destreg;
|
|
u32 srcval;
|
|
u16 *srcreg;
|
|
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("MOVSX\t");
|
|
FETCH_DECODE_MODRM(mod, rh, rl);
|
|
switch (mod) {
|
|
case 0:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm00_address(rl);
|
|
srcval = (s32) ((s16) fetch_data_word(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 1:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm01_address(rl);
|
|
srcval = (s32) ((s16) fetch_data_word(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 2:
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcoffset = decode_rm10_address(rl);
|
|
srcval = (s32) ((s16) fetch_data_word(srcoffset));
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = srcval;
|
|
break;
|
|
case 3: /* register to register */
|
|
destreg = DECODE_RM_LONG_REGISTER(rh);
|
|
DECODE_PRINTF(",");
|
|
srcreg = DECODE_RM_WORD_REGISTER(rl);
|
|
DECODE_PRINTF("\n");
|
|
TRACE_AND_STEP();
|
|
*destreg = (s32) ((s16) * srcreg);
|
|
break;
|
|
}
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/* Handles opcodes 0xc8-0xcf */
|
|
static void
|
|
x86emuOp2_bswap(u8 X86EMU_UNUSED(op2))
|
|
{
|
|
START_OF_INSTR();
|
|
DECODE_PRINTF("BSWAP\n");
|
|
TRACE_AND_STEP();
|
|
|
|
switch (op2) {
|
|
case 0xc8:
|
|
M.x86.R_EAX = bswap_32(M.x86.R_EAX);
|
|
break;
|
|
case 0xc9:
|
|
M.x86.R_ECX = bswap_32(M.x86.R_ECX);
|
|
break;
|
|
case 0xca:
|
|
M.x86.R_EDX = bswap_32(M.x86.R_EDX);
|
|
break;
|
|
case 0xcb:
|
|
M.x86.R_EBX = bswap_32(M.x86.R_EBX);
|
|
break;
|
|
case 0xcc:
|
|
M.x86.R_ESP = bswap_32(M.x86.R_ESP);
|
|
break;
|
|
case 0xcd:
|
|
M.x86.R_EBP = bswap_32(M.x86.R_EBP);
|
|
break;
|
|
case 0xce:
|
|
M.x86.R_ESI = bswap_32(M.x86.R_ESI);
|
|
break;
|
|
case 0xcf:
|
|
M.x86.R_EDI = bswap_32(M.x86.R_EDI);
|
|
break;
|
|
default:
|
|
/* can't happen */
|
|
break;
|
|
}
|
|
|
|
DECODE_CLEAR_SEGOVR();
|
|
END_OF_INSTR();
|
|
}
|
|
|
|
/***************************************************************************
|
|
* Double byte operation code table:
|
|
**************************************************************************/
|
|
void (*x86emu_optab2[256]) (u8) = {
|
|
/* 0x00 */ x86emuOp2_illegal_op,
|
|
/* Group F (ring 0 PM) */
|
|
/* 0x01 */ x86emuOp2_illegal_op,
|
|
/* Group G (ring 0 PM) */
|
|
/* 0x02 */ x86emuOp2_illegal_op,
|
|
/* lar (ring 0 PM) */
|
|
/* 0x03 */ x86emuOp2_illegal_op,
|
|
/* lsl (ring 0 PM) */
|
|
/* 0x04 */ x86emuOp2_illegal_op,
|
|
/* 0x05 */ x86emuOp2_illegal_op,
|
|
/* loadall (undocumented) */
|
|
/* 0x06 */ x86emuOp2_illegal_op,
|
|
/* clts (ring 0 PM) */
|
|
/* 0x07 */ x86emuOp2_illegal_op,
|
|
/* loadall (undocumented) */
|
|
/* 0x08 */ x86emuOp2_illegal_op,
|
|
/* invd (ring 0 PM) */
|
|
/* 0x09 */ x86emuOp2_illegal_op,
|
|
/* wbinvd (ring 0 PM) */
|
|
/* 0x0a */ x86emuOp2_illegal_op,
|
|
/* 0x0b */ x86emuOp2_illegal_op,
|
|
/* 0x0c */ x86emuOp2_illegal_op,
|
|
/* 0x0d */ x86emuOp2_illegal_op,
|
|
/* 0x0e */ x86emuOp2_illegal_op,
|
|
/* 0x0f */ x86emuOp2_illegal_op,
|
|
/* 0x10 */ x86emuOp2_illegal_op,
|
|
/* 0x11 */ x86emuOp2_illegal_op,
|
|
/* 0x12 */ x86emuOp2_illegal_op,
|
|
/* 0x13 */ x86emuOp2_illegal_op,
|
|
/* 0x14 */ x86emuOp2_illegal_op,
|
|
/* 0x15 */ x86emuOp2_illegal_op,
|
|
/* 0x16 */ x86emuOp2_illegal_op,
|
|
/* 0x17 */ x86emuOp2_illegal_op,
|
|
/* 0x18 */ x86emuOp2_illegal_op,
|
|
/* 0x19 */ x86emuOp2_illegal_op,
|
|
/* 0x1a */ x86emuOp2_illegal_op,
|
|
/* 0x1b */ x86emuOp2_illegal_op,
|
|
/* 0x1c */ x86emuOp2_illegal_op,
|
|
/* 0x1d */ x86emuOp2_illegal_op,
|
|
/* 0x1e */ x86emuOp2_illegal_op,
|
|
/* 0x1f */ x86emuOp2_illegal_op,
|
|
/* 0x20 */ x86emuOp2_illegal_op,
|
|
/* mov reg32,creg (ring 0 PM) */
|
|
/* 0x21 */ x86emuOp2_illegal_op,
|
|
/* mov reg32,dreg (ring 0 PM) */
|
|
/* 0x22 */ x86emuOp2_illegal_op,
|
|
/* mov creg,reg32 (ring 0 PM) */
|
|
/* 0x23 */ x86emuOp2_illegal_op,
|
|
/* mov dreg,reg32 (ring 0 PM) */
|
|
/* 0x24 */ x86emuOp2_illegal_op,
|
|
/* mov reg32,treg (ring 0 PM) */
|
|
/* 0x25 */ x86emuOp2_illegal_op,
|
|
/* 0x26 */ x86emuOp2_illegal_op,
|
|
/* mov treg,reg32 (ring 0 PM) */
|
|
/* 0x27 */ x86emuOp2_illegal_op,
|
|
/* 0x28 */ x86emuOp2_illegal_op,
|
|
/* 0x29 */ x86emuOp2_illegal_op,
|
|
/* 0x2a */ x86emuOp2_illegal_op,
|
|
/* 0x2b */ x86emuOp2_illegal_op,
|
|
/* 0x2c */ x86emuOp2_illegal_op,
|
|
/* 0x2d */ x86emuOp2_illegal_op,
|
|
/* 0x2e */ x86emuOp2_illegal_op,
|
|
/* 0x2f */ x86emuOp2_illegal_op,
|
|
/* 0x30 */ x86emuOp2_illegal_op,
|
|
/* 0x31 */ x86emuOp2_rdtsc,
|
|
/* 0x32 */ x86emuOp2_illegal_op,
|
|
/* 0x33 */ x86emuOp2_illegal_op,
|
|
/* 0x34 */ x86emuOp2_illegal_op,
|
|
/* 0x35 */ x86emuOp2_illegal_op,
|
|
/* 0x36 */ x86emuOp2_illegal_op,
|
|
/* 0x37 */ x86emuOp2_illegal_op,
|
|
/* 0x38 */ x86emuOp2_illegal_op,
|
|
/* 0x39 */ x86emuOp2_illegal_op,
|
|
/* 0x3a */ x86emuOp2_illegal_op,
|
|
/* 0x3b */ x86emuOp2_illegal_op,
|
|
/* 0x3c */ x86emuOp2_illegal_op,
|
|
/* 0x3d */ x86emuOp2_illegal_op,
|
|
/* 0x3e */ x86emuOp2_illegal_op,
|
|
/* 0x3f */ x86emuOp2_illegal_op,
|
|
/* 0x40 */ x86emuOp2_illegal_op,
|
|
/* 0x41 */ x86emuOp2_illegal_op,
|
|
/* 0x42 */ x86emuOp2_illegal_op,
|
|
/* 0x43 */ x86emuOp2_illegal_op,
|
|
/* 0x44 */ x86emuOp2_illegal_op,
|
|
/* 0x45 */ x86emuOp2_illegal_op,
|
|
/* 0x46 */ x86emuOp2_illegal_op,
|
|
/* 0x47 */ x86emuOp2_illegal_op,
|
|
/* 0x48 */ x86emuOp2_illegal_op,
|
|
/* 0x49 */ x86emuOp2_illegal_op,
|
|
/* 0x4a */ x86emuOp2_illegal_op,
|
|
/* 0x4b */ x86emuOp2_illegal_op,
|
|
/* 0x4c */ x86emuOp2_illegal_op,
|
|
/* 0x4d */ x86emuOp2_illegal_op,
|
|
/* 0x4e */ x86emuOp2_illegal_op,
|
|
/* 0x4f */ x86emuOp2_illegal_op,
|
|
/* 0x50 */ x86emuOp2_illegal_op,
|
|
/* 0x51 */ x86emuOp2_illegal_op,
|
|
/* 0x52 */ x86emuOp2_illegal_op,
|
|
/* 0x53 */ x86emuOp2_illegal_op,
|
|
/* 0x54 */ x86emuOp2_illegal_op,
|
|
/* 0x55 */ x86emuOp2_illegal_op,
|
|
/* 0x56 */ x86emuOp2_illegal_op,
|
|
/* 0x57 */ x86emuOp2_illegal_op,
|
|
/* 0x58 */ x86emuOp2_illegal_op,
|
|
/* 0x59 */ x86emuOp2_illegal_op,
|
|
/* 0x5a */ x86emuOp2_illegal_op,
|
|
/* 0x5b */ x86emuOp2_illegal_op,
|
|
/* 0x5c */ x86emuOp2_illegal_op,
|
|
/* 0x5d */ x86emuOp2_illegal_op,
|
|
/* 0x5e */ x86emuOp2_illegal_op,
|
|
/* 0x5f */ x86emuOp2_illegal_op,
|
|
/* 0x60 */ x86emuOp2_illegal_op,
|
|
/* 0x61 */ x86emuOp2_illegal_op,
|
|
/* 0x62 */ x86emuOp2_illegal_op,
|
|
/* 0x63 */ x86emuOp2_illegal_op,
|
|
/* 0x64 */ x86emuOp2_illegal_op,
|
|
/* 0x65 */ x86emuOp2_illegal_op,
|
|
/* 0x66 */ x86emuOp2_illegal_op,
|
|
/* 0x67 */ x86emuOp2_illegal_op,
|
|
/* 0x68 */ x86emuOp2_illegal_op,
|
|
/* 0x69 */ x86emuOp2_illegal_op,
|
|
/* 0x6a */ x86emuOp2_illegal_op,
|
|
/* 0x6b */ x86emuOp2_illegal_op,
|
|
/* 0x6c */ x86emuOp2_illegal_op,
|
|
/* 0x6d */ x86emuOp2_illegal_op,
|
|
/* 0x6e */ x86emuOp2_illegal_op,
|
|
/* 0x6f */ x86emuOp2_illegal_op,
|
|
/* 0x70 */ x86emuOp2_illegal_op,
|
|
/* 0x71 */ x86emuOp2_illegal_op,
|
|
/* 0x72 */ x86emuOp2_illegal_op,
|
|
/* 0x73 */ x86emuOp2_illegal_op,
|
|
/* 0x74 */ x86emuOp2_illegal_op,
|
|
/* 0x75 */ x86emuOp2_illegal_op,
|
|
/* 0x76 */ x86emuOp2_illegal_op,
|
|
/* 0x77 */ x86emuOp2_illegal_op,
|
|
/* 0x78 */ x86emuOp2_illegal_op,
|
|
/* 0x79 */ x86emuOp2_illegal_op,
|
|
/* 0x7a */ x86emuOp2_illegal_op,
|
|
/* 0x7b */ x86emuOp2_illegal_op,
|
|
/* 0x7c */ x86emuOp2_illegal_op,
|
|
/* 0x7d */ x86emuOp2_illegal_op,
|
|
/* 0x7e */ x86emuOp2_illegal_op,
|
|
/* 0x7f */ x86emuOp2_illegal_op,
|
|
/* 0x80 */ x86emuOp2_long_jump,
|
|
/* 0x81 */ x86emuOp2_long_jump,
|
|
/* 0x82 */ x86emuOp2_long_jump,
|
|
/* 0x83 */ x86emuOp2_long_jump,
|
|
/* 0x84 */ x86emuOp2_long_jump,
|
|
/* 0x85 */ x86emuOp2_long_jump,
|
|
/* 0x86 */ x86emuOp2_long_jump,
|
|
/* 0x87 */ x86emuOp2_long_jump,
|
|
/* 0x88 */ x86emuOp2_long_jump,
|
|
/* 0x89 */ x86emuOp2_long_jump,
|
|
/* 0x8a */ x86emuOp2_long_jump,
|
|
/* 0x8b */ x86emuOp2_long_jump,
|
|
/* 0x8c */ x86emuOp2_long_jump,
|
|
/* 0x8d */ x86emuOp2_long_jump,
|
|
/* 0x8e */ x86emuOp2_long_jump,
|
|
/* 0x8f */ x86emuOp2_long_jump,
|
|
/* 0x90 */ x86emuOp2_set_byte,
|
|
/* 0x91 */ x86emuOp2_set_byte,
|
|
/* 0x92 */ x86emuOp2_set_byte,
|
|
/* 0x93 */ x86emuOp2_set_byte,
|
|
/* 0x94 */ x86emuOp2_set_byte,
|
|
/* 0x95 */ x86emuOp2_set_byte,
|
|
/* 0x96 */ x86emuOp2_set_byte,
|
|
/* 0x97 */ x86emuOp2_set_byte,
|
|
/* 0x98 */ x86emuOp2_set_byte,
|
|
/* 0x99 */ x86emuOp2_set_byte,
|
|
/* 0x9a */ x86emuOp2_set_byte,
|
|
/* 0x9b */ x86emuOp2_set_byte,
|
|
/* 0x9c */ x86emuOp2_set_byte,
|
|
/* 0x9d */ x86emuOp2_set_byte,
|
|
/* 0x9e */ x86emuOp2_set_byte,
|
|
/* 0x9f */ x86emuOp2_set_byte,
|
|
/* 0xa0 */ x86emuOp2_push_FS,
|
|
/* 0xa1 */ x86emuOp2_pop_FS,
|
|
/* 0xa2 */ x86emuOp2_cpuid,
|
|
/* 0xa3 */ x86emuOp2_bt_R,
|
|
/* 0xa4 */ x86emuOp2_shld_IMM,
|
|
/* 0xa5 */ x86emuOp2_shld_CL,
|
|
/* 0xa6 */ x86emuOp2_illegal_op,
|
|
/* 0xa7 */ x86emuOp2_illegal_op,
|
|
/* 0xa8 */ x86emuOp2_push_GS,
|
|
/* 0xa9 */ x86emuOp2_pop_GS,
|
|
/* 0xaa */ x86emuOp2_illegal_op,
|
|
/* 0xab */ x86emuOp2_bts_R,
|
|
/* 0xac */ x86emuOp2_shrd_IMM,
|
|
/* 0xad */ x86emuOp2_shrd_CL,
|
|
/* 0xae */ x86emuOp2_illegal_op,
|
|
/* 0xaf */ x86emuOp2_imul_R_RM,
|
|
/* 0xb0 */ x86emuOp2_illegal_op,
|
|
/* TODO: cmpxchg */
|
|
/* 0xb1 */ x86emuOp2_illegal_op,
|
|
/* TODO: cmpxchg */
|
|
/* 0xb2 */ x86emuOp2_lss_R_IMM,
|
|
/* 0xb3 */ x86emuOp2_btr_R,
|
|
/* 0xb4 */ x86emuOp2_lfs_R_IMM,
|
|
/* 0xb5 */ x86emuOp2_lgs_R_IMM,
|
|
/* 0xb6 */ x86emuOp2_movzx_byte_R_RM,
|
|
/* 0xb7 */ x86emuOp2_movzx_word_R_RM,
|
|
/* 0xb8 */ x86emuOp2_illegal_op,
|
|
/* 0xb9 */ x86emuOp2_illegal_op,
|
|
/* 0xba */ x86emuOp2_btX_I,
|
|
/* 0xbb */ x86emuOp2_btc_R,
|
|
/* 0xbc */ x86emuOp2_bsf,
|
|
/* 0xbd */ x86emuOp2_bsr,
|
|
/* 0xbe */ x86emuOp2_movsx_byte_R_RM,
|
|
/* 0xbf */ x86emuOp2_movsx_word_R_RM,
|
|
/* 0xc0 */ x86emuOp2_illegal_op,
|
|
/* TODO: xadd */
|
|
/* 0xc1 */ x86emuOp2_illegal_op,
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/* TODO: xadd */
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/* 0xc2 */ x86emuOp2_illegal_op,
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/* 0xc3 */ x86emuOp2_illegal_op,
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/* 0xc4 */ x86emuOp2_illegal_op,
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/* 0xc5 */ x86emuOp2_illegal_op,
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/* 0xc6 */ x86emuOp2_illegal_op,
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/* 0xc7 */ x86emuOp2_illegal_op,
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/* 0xc8 */ x86emuOp2_bswap,
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/* 0xc9 */ x86emuOp2_bswap,
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/* 0xca */ x86emuOp2_bswap,
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/* 0xcb */ x86emuOp2_bswap,
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/* 0xcc */ x86emuOp2_bswap,
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/* 0xcd */ x86emuOp2_bswap,
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/* 0xce */ x86emuOp2_bswap,
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/* 0xcf */ x86emuOp2_bswap,
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/* 0xd0 */ x86emuOp2_illegal_op,
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/* 0xd1 */ x86emuOp2_illegal_op,
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/* 0xd2 */ x86emuOp2_illegal_op,
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/* 0xd3 */ x86emuOp2_illegal_op,
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/* 0xd4 */ x86emuOp2_illegal_op,
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/* 0xd5 */ x86emuOp2_illegal_op,
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/* 0xd6 */ x86emuOp2_illegal_op,
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/* 0xd7 */ x86emuOp2_illegal_op,
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/* 0xd8 */ x86emuOp2_illegal_op,
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/* 0xd9 */ x86emuOp2_illegal_op,
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/* 0xda */ x86emuOp2_illegal_op,
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/* 0xdb */ x86emuOp2_illegal_op,
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/* 0xdc */ x86emuOp2_illegal_op,
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/* 0xdd */ x86emuOp2_illegal_op,
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/* 0xde */ x86emuOp2_illegal_op,
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/* 0xdf */ x86emuOp2_illegal_op,
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/* 0xe0 */ x86emuOp2_illegal_op,
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/* 0xe1 */ x86emuOp2_illegal_op,
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/* 0xe2 */ x86emuOp2_illegal_op,
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/* 0xe3 */ x86emuOp2_illegal_op,
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/* 0xe4 */ x86emuOp2_illegal_op,
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/* 0xe5 */ x86emuOp2_illegal_op,
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/* 0xe6 */ x86emuOp2_illegal_op,
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/* 0xe7 */ x86emuOp2_illegal_op,
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/* 0xe8 */ x86emuOp2_illegal_op,
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/* 0xe9 */ x86emuOp2_illegal_op,
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/* 0xea */ x86emuOp2_illegal_op,
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/* 0xeb */ x86emuOp2_illegal_op,
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/* 0xec */ x86emuOp2_illegal_op,
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/* 0xed */ x86emuOp2_illegal_op,
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/* 0xee */ x86emuOp2_illegal_op,
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/* 0xef */ x86emuOp2_illegal_op,
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/* 0xf0 */ x86emuOp2_illegal_op,
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/* 0xf1 */ x86emuOp2_illegal_op,
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/* 0xf2 */ x86emuOp2_illegal_op,
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/* 0xf3 */ x86emuOp2_illegal_op,
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/* 0xf4 */ x86emuOp2_illegal_op,
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/* 0xf5 */ x86emuOp2_illegal_op,
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/* 0xf6 */ x86emuOp2_illegal_op,
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/* 0xf7 */ x86emuOp2_illegal_op,
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/* 0xf8 */ x86emuOp2_illegal_op,
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/* 0xf9 */ x86emuOp2_illegal_op,
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/* 0xfa */ x86emuOp2_illegal_op,
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/* 0xfb */ x86emuOp2_illegal_op,
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/* 0xfc */ x86emuOp2_illegal_op,
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/* 0xfd */ x86emuOp2_illegal_op,
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/* 0xfe */ x86emuOp2_illegal_op,
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/* 0xff */ x86emuOp2_illegal_op,
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};
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