165 lines
3.9 KiB
C++
165 lines
3.9 KiB
C++
// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "bochs.h"
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void
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BX_CPU_C::BOUND_GvMa(BxInstruction_t *i)
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{
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#if BX_CPU_LEVEL < 2
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bx_panic("BOUND_GvMa: not supported on 8086!\n");
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#else
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if (i->mod == 0xc0) {
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/* undefined opcode exception */
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bx_panic("bound: op2 must be mem ref\n");
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UndefinedOpcode(i);
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}
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if (i->os_32) {
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Bit32s bound_min, bound_max;
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Bit32s op1_32;
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op1_32 = BX_READ_32BIT_REG(i->nnn);
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read_virtual_dword(i->seg, i->rm_addr, (Bit32u *) &bound_min);
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read_virtual_dword(i->seg, i->rm_addr+4, (Bit32u *) &bound_max);
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/* ??? */
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if ( (op1_32 < bound_min) || (op1_32 > bound_max) ) {
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bx_printf("BOUND: fails bounds test\n");
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exception(5, 0, 0);
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}
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}
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else {
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Bit16s bound_min, bound_max;
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Bit16s op1_16;
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op1_16 = BX_READ_16BIT_REG(i->nnn);
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read_virtual_word(i->seg, i->rm_addr, (Bit16u *) &bound_min);
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read_virtual_word(i->seg, i->rm_addr+2, (Bit16u *) &bound_max);
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/* ??? */
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if ( (op1_16 < bound_min) || (op1_16 > bound_max) ) {
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bx_printf("BOUND: fails bounds test\n");
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exception(5, 0, 0);
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}
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}
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#endif
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}
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void
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BX_CPU_C::INT1(BxInstruction_t *i)
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{
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// This is an undocumented instrucion (opcode 0xf1)
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// which is useful for an ICE system.
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#if BX_DEBUGGER
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BX_CPU_THIS_PTR show_flag |= Flag_int;
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#endif
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interrupt(1, 1, 0, 0);
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BX_INSTR_FAR_BRANCH(BX_INSTR_IS_INT,
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BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value,
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BX_CPU_THIS_PTR eip);
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}
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void
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BX_CPU_C::INT3(BxInstruction_t *i)
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{
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// INT 3 is not IOPL sensitive
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#if BX_DEBUGGER
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BX_CPU_THIS_PTR show_flag |= Flag_int;
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#endif
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//bx_panic("INT3: bailing\n");
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interrupt(3, 1, 0, 0);
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BX_INSTR_FAR_BRANCH(BX_INSTR_IS_INT,
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BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value,
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BX_CPU_THIS_PTR eip);
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}
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void
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BX_CPU_C::INT_Ib(BxInstruction_t *i)
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{
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Bit8u imm8;
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#if BX_DEBUGGER
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BX_CPU_THIS_PTR show_flag |= Flag_int;
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#endif
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imm8 = i->Ib;
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if (v8086_mode() && (IOPL<3)) {
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//bx_printf("int_ib: v8086: IOPL<3\n");
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exception(BX_GP_EXCEPTION, 0, 0);
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}
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#ifdef SHOW_EXIT_STATUS
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if ( (imm8 == 0x21) && (AH == 0x4c) ) {
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fprintf(stderr, "#(%u) INT 21/4C called AL=0x%02x, BX=0x%04x\n", BX_SIM_ID,
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(unsigned) AL, (unsigned) BX);
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bx_printf("INT 21/4C called AL=0x%02x, BX=0x%04x\n", (unsigned) AL, (unsigned) BX);
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}
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#endif
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interrupt(imm8, 1, 0, 0);
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BX_INSTR_FAR_BRANCH(BX_INSTR_IS_INT,
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BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value,
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BX_CPU_THIS_PTR eip);
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}
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void
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BX_CPU_C::INTO(BxInstruction_t *i)
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{
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#if BX_DEBUGGER
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BX_CPU_THIS_PTR show_flag |= Flag_int;
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#endif
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/* ??? is this IOPL sensitive ? */
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if (v8086_mode()) bx_panic("soft_int: v8086 mode unsupported\n");
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if (get_OF()) {
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interrupt(4, 1, 0, 0);
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BX_INSTR_FAR_BRANCH(BX_INSTR_IS_INT,
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BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value,
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BX_CPU_THIS_PTR eip);
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}
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}
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