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reactos/subsystems/ntvdm/bop.c

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[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
/*
* COPYRIGHT: GPL - See COPYING in the top level directory
* PROJECT: ReactOS Virtual DOS Machine
* FILE: bop.c
* PURPOSE: BIOS Operation Handlers
* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
* Hermes Belusca-Maito (hermes.belusca@sfr.fr)
*/
/* INCLUDES *******************************************************************/
#define NDEBUG
#include "emulator.h"
#include "bios.h"
[FAST486] Fix the type of a variable. [NTVDM] Introduce a BOP handler table for the 256 possible BOP functions and use it. svn path=/branches/ntvdm/; revision=60818
2013-11-01 02:28:47 +00:00
#include "bop.h"
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
#include "dos.h"
[FAST486] Fix the type of a variable. [NTVDM] Introduce a BOP handler table for the 256 possible BOP functions and use it. svn path=/branches/ntvdm/; revision=60818
2013-11-01 02:28:47 +00:00
//#include "vga.h"
//#include "pic.h"
//#include "ps2.h"
//#include "timer.h"
[NTVDM] - BIOS: Implement INT 12h (BiosGetMemorySize) - BOP/DOS: Add some DPRINTs for INT 25h, 2Fh and for unimplemented functions of INT 21h. It's for helping in testing 4DOS.COM svn path=/branches/ntvdm/; revision=60889
2013-11-08 23:15:58 +00:00
#include "registers.h"
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
LPCWSTR ExceptionName[] =
{
L"Division By Zero",
L"Debug",
L"Unexpected Error",
L"Breakpoint",
L"Integer Overflow",
L"Bound Range Exceeded",
L"Invalid Opcode",
L"FPU Not Available"
};
[FAST486] Fix the type of a variable. [NTVDM] Introduce a BOP handler table for the 256 possible BOP functions and use it. svn path=/branches/ntvdm/; revision=60818
2013-11-01 02:28:47 +00:00
EMULATOR_BOP_PROC BopProc[EMULATOR_MAX_BOP_NUM] =
{
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
ControlBop
};
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
VOID WINAPI Exception(BYTE ExceptionNumber, LPWORD Stack)
{
WORD CodeSegment, InstructionPointer;
[NTVDM] Display the opcode when an unhandled exception occurs. svn path=/branches/ntvdm/; revision=60897
2013-11-09 15:48:07 +00:00
PBYTE Opcode;
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
ASSERT(ExceptionNumber < 8);
/* Get the CS:IP */
InstructionPointer = Stack[STACK_IP];
CodeSegment = Stack[STACK_CS];
[NTVDM] Display the opcode when an unhandled exception occurs. svn path=/branches/ntvdm/; revision=60897
2013-11-09 15:48:07 +00:00
Opcode = (PBYTE)SEG_OFF_TO_PTR(CodeSegment, InstructionPointer);
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
/* Display a message to the user */
[NTVDM] Display the opcode when an unhandled exception occurs. svn path=/branches/ntvdm/; revision=60897
2013-11-09 15:48:07 +00:00
DisplayMessage(L"Exception: %s occured at %04X:%04X\n"
L"Opcode: %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X",
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
ExceptionName[ExceptionNumber],
CodeSegment,
[NTVDM] Display the opcode when an unhandled exception occurs. svn path=/branches/ntvdm/; revision=60897
2013-11-09 15:48:07 +00:00
InstructionPointer,
Opcode[0],
Opcode[1],
Opcode[2],
Opcode[3],
Opcode[4],
Opcode[5],
Opcode[6],
Opcode[7],
Opcode[8],
Opcode[9]);
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
/* Stop the VDM */
VdmRunning = FALSE;
return;
}
// VOID WINAPI IrqDispatch(BYTE IrqNumber, LPWORD Stack)
// {
// /* Check if this was an PIC IRQ */
// if (IntNum >= BIOS_PIC_MASTER_INT && IntNum < BIOS_PIC_MASTER_INT + 8)
// {
// /* It was an IRQ from the master PIC */
// BiosHandleIrq(IntNum - BIOS_PIC_MASTER_INT, Stack);
// }
// else if (IntNum >= BIOS_PIC_SLAVE_INT && IntNum < BIOS_PIC_SLAVE_INT + 8)
// {
// /* It was an IRQ from the slave PIC */
// BiosHandleIrq(IntNum - BIOS_PIC_SLAVE_INT + 8, Stack);
// }
// return;
// }
// VOID WINAPI BiosInt(BYTE IntNumber, LPWORD Stack)
// {
// }
VOID WINAPI IntDispatch(LPWORD Stack)
{
BYTE IntNum;
/* Get the interrupt number */
IntNum = LOBYTE(Stack[STACK_INT_NUM]);
/* Check if this was an exception */
if (IntNum < 8)
{
Exception(IntNum, Stack);
return;
}
/* Check if this was an PIC IRQ */
if (IntNum >= BIOS_PIC_MASTER_INT && IntNum < BIOS_PIC_MASTER_INT + 8)
{
/* It was an IRQ from the master PIC */
BiosHandleIrq(IntNum - BIOS_PIC_MASTER_INT, Stack);
return;
}
else if (IntNum >= BIOS_PIC_SLAVE_INT && IntNum < BIOS_PIC_SLAVE_INT + 8)
{
/* It was an IRQ from the slave PIC */
BiosHandleIrq(IntNum - BIOS_PIC_SLAVE_INT + 8, Stack);
return;
}
switch (IntNum)
{
case BIOS_VIDEO_INTERRUPT:
{
/* This is the video BIOS interrupt, call the BIOS */
BiosVideoService(Stack);
break;
}
case BIOS_EQUIPMENT_INTERRUPT:
{
/* This is the BIOS "get equipment" command, call the BIOS */
BiosEquipmentService(Stack);
break;
}
[NTVDM] - BIOS: Implement INT 12h (BiosGetMemorySize) - BOP/DOS: Add some DPRINTs for INT 25h, 2Fh and for unimplemented functions of INT 21h. It's for helping in testing 4DOS.COM svn path=/branches/ntvdm/; revision=60889
2013-11-08 23:15:58 +00:00
case BIOS_MEMORY_SIZE:
{
/* This is the BIOS "get memory size" command, call the BIOS */
BiosGetMemorySize(Stack);
break;
}
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
case BIOS_KBD_INTERRUPT:
{
/* This is the keyboard BIOS interrupt, call the BIOS */
BiosKeyboardService(Stack);
break;
}
case BIOS_TIME_INTERRUPT:
{
/* This is the time BIOS interrupt, call the BIOS */
BiosTimeService(Stack);
break;
}
case BIOS_SYS_TIMER_INTERRUPT:
{
/* BIOS timer update */
BiosSystemTimerInterrupt(Stack);
break;
}
case 0x20:
{
DosInt20h(Stack);
break;
}
case 0x21:
{
DosInt21h(Stack);
break;
}
case 0x23:
{
DosBreakInterrupt(Stack);
break;
}
[NTVDM] - BIOS: Implement INT 12h (BiosGetMemorySize) - BOP/DOS: Add some DPRINTs for INT 25h, 2Fh and for unimplemented functions of INT 21h. It's for helping in testing 4DOS.COM svn path=/branches/ntvdm/; revision=60889
2013-11-08 23:15:58 +00:00
case 0x2F:
{
DPRINT1("DOS System Function INT 0x2F, AH = %xh, AL = %xh NOT IMPLEMENTED!\n",
getAH(), getAL());
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
break;
}
[FAST486][NTVDM] BOP numbers are 1 byte and map to a function (over 255). But one can pass additional "parameters" to those functions by adding extra bytes, however such functions must advance "by hand" the instruction pointer. [NTVDM] - Take into account our previous remark for the BIOS interrupt stubs, and comment them. - Rework EmulatorBiosOperation (move almost all of its existing code into subfunctions in bop.c) so that one can call many other BOP functions in the future (WIP). The BOP number (still called) EMULATOR_INT_BOP (of value 0xFF) is used for internal 16 --> 32 bit switching for our 32bit bios. - It appears that the IoRead/WriteCallback and IdleCallback must not be NULL for using fast486. I'm committing a temporary fix that I will definitely fix in a subsequent commit. svn path=/branches/ntvdm/; revision=60812
2013-11-01 00:01:07 +00:00
default:
{
DPRINT1("Unhandled interrupt: 0x%02X\n", IntNum);
break;
}
}
}
VOID WINAPI ControlBop(LPWORD Stack)
{
IntDispatch(Stack);
}
/* EOF */
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