mirror of
git://source.winehq.org/git/wine.git
synced 2024-10-31 12:54:13 +00:00
246 lines
6.9 KiB
C
246 lines
6.9 KiB
C
/*
|
|
* DOS interrupt 34->3e handlers. All FPU interrupt code should be
|
|
* moved into this file.
|
|
* int 3d is not activated yet...
|
|
*
|
|
* Copyright 2002 Robert 'Admiral' Coeyman
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include "msdos.h"
|
|
#include "miscemu.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(int);
|
|
|
|
/*
|
|
* The actual work is done by a single routine.
|
|
*/
|
|
|
|
static void FPU_ModifyCode(CONTEXT86 *context, BYTE Opcode);
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* INT_Int34Handler (WPROCS.152)
|
|
*
|
|
* Handler for int 34 (FLOATING POINT EMULATION - Opcode 0xd8).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int34Handler(CONTEXT86 *context)
|
|
{
|
|
|
|
TRACE("Int 0x34 called-- FP opcode 0xd8");
|
|
FPU_ModifyCode(context, 0xd8);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int35Handler (WPROCS.153)
|
|
*
|
|
* Handler for int 35 (FLOATING POINT EMULATION - Opcode 0xd9).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int35Handler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x35 called-- FP opcode 0xd9");
|
|
FPU_ModifyCode(context, 0xd9);
|
|
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* INT_Int36Handler (WPROCS.154)
|
|
*
|
|
* Handler for int 36 (FLOATING POINT EMULATION - Opcode 0xda).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int36Handler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x36 called-- FP opcode 0xda");
|
|
FPU_ModifyCode(context, 0xda);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int37Handler (WPROCS.155)
|
|
*
|
|
* Handler for int 37 (FLOATING POINT EMULATION - Opcode 0xdb).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int37Handler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x37 called-- FP opcode 0xdb");
|
|
FPU_ModifyCode(context, 0xdb);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int38Handler (WPROCS.156)
|
|
*
|
|
* Handler for int 38 (FLOATING POINT EMULATION - Opcode 0xdc).
|
|
*
|
|
* Between versions 3.0 and 5.01, the original PC-MOS API call that
|
|
* was here was moved to int 0xd4.
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int38Handler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x38 called-- FP opcode 0xdc");
|
|
FPU_ModifyCode(context, 0xdc);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int39Handler (WPROCS.157)
|
|
*
|
|
* Handler for int 39 (FLOATING POINT EMULATION - Opcode 0xdd).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int39Handler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x39 called-- FP opcode 0xdd");
|
|
FPU_ModifyCode(context, 0xdd);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int3aHandler (WPROCS.158)
|
|
*
|
|
* Handler for int 3a (FLOATING POINT EMULATION - Opcode 0xde).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int3aHandler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x3a called-- FP opcode 0xde");
|
|
FPU_ModifyCode(context, 0xde);
|
|
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int3bHandler (WPROCS.159)
|
|
*
|
|
* Handler for int 3B (FLOATING POINT EMULATION - Opcode 0xdf).
|
|
*
|
|
* The interrupt list isn't specific about what this interrupt
|
|
* actually does. [ interrup.m ]
|
|
*/
|
|
void WINAPI INT_Int3bHandler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x3b called-- FP opcode 0xdf");
|
|
FPU_ModifyCode(context, 0xdf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* INT_Int3cHandler (WPROCS.160)
|
|
*
|
|
* Handler for int 3C (FLOATING POINT EMULATION - INSTRUCTIONS WITH SEGMENT OVERRIDE).
|
|
*
|
|
* Generated code is CD 3C xy mm ... (CD = int | 3C = this interrupt)
|
|
* xy is a modified ESC code and mm is the modR/M byte.
|
|
* xy byte seems to be encoded as ss011xxx or ss000xxx
|
|
* ss= segment override.
|
|
* 00 -> DS
|
|
* 01 -> SS
|
|
* 10 -> CS
|
|
* 11 -> ES
|
|
*
|
|
* 11011xxx should be the opcode instruction.
|
|
*/
|
|
void WINAPI INT_Int3cHandler(CONTEXT86 *context)
|
|
{
|
|
FIXME("Int 3C NOT Implemented");
|
|
INT_BARF(context, 0x3c);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* INT_Int3dHandler (WPROCS.161)
|
|
*
|
|
* Handler for int 3D (FLOATING POINT EMULATION - Standalone FWAIT).
|
|
*
|
|
* Opcode 0x90 is a NOP. It just fills space where the 3D was.
|
|
*/
|
|
void WINAPI INT_Int3dHandler(CONTEXT86 *context)
|
|
{
|
|
TRACE("Int 0x3d called-- Standalone FWAIT");
|
|
FPU_ModifyCode(context, 0x90);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* INT_Int3eHandler (WPROCS.162)
|
|
*
|
|
* FLOATING POINT EMULATION -- Borland "Shortcut" call.
|
|
* The two bytes following the int 3E instruction are
|
|
* the subcode and a NOP ( 0x90 ), except for subcodes DC and DE
|
|
* where the second byte is the register count.
|
|
*
|
|
* Direct access 4.0 modifies and does not restore this vector.
|
|
*
|
|
*/
|
|
void WINAPI INT_Int3eHandler(CONTEXT86 *context)
|
|
{
|
|
FIXME("Int 3E NOT Implemented");
|
|
INT_BARF(context, 0x3e);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* FPU_ModifyCode
|
|
*
|
|
* This is the function that inserts the 0x9b fwait instruction
|
|
* and the actual FPU opcode into the program.
|
|
* -A.C.
|
|
*
|
|
* Code thanks to Ove Kaaven
|
|
*/
|
|
static void FPU_ModifyCode(CONTEXT86 *context, BYTE Opcode)
|
|
{
|
|
WORD *stack = CTX_SEG_OFF_TO_LIN(context, context->SegSs, context->Esp);
|
|
BYTE *code = CTX_SEG_OFF_TO_LIN(context, stack[1], stack[0]);
|
|
|
|
/*
|
|
* All *NIX systems should have a real or kernel emulated FPU.
|
|
*/
|
|
|
|
code[-2] = 0x9b; /* The fwait instruction */
|
|
code[-1] = Opcode; /* Insert the opcode */
|
|
|
|
if ( stack[0] < 2 ) FIXME("Backed up over a segment boundry in FPU code.");
|
|
|
|
stack[0] -= 2; /* back up the return address 2 bytes */
|
|
|
|
TRACE("Modified code in FPU int call to 0x9b 0x%x",Opcode);
|
|
}
|