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[NTVDM]

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Remove unnecessary indentation and clarify the code a bit.


svn path=/branches/ntvdm/; revision=60919
This commit is contained in:
Aleksandar Andrejevic 2013-11-10 18:14:40 +00:00
parent e4946e8b85
commit 7c036fd0f7
1 changed files with 22 additions and 25 deletions
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47
subsystems/ntvdm/int32.c
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@ -130,40 +130,38 @@ VOID WINAPI InitializeInt32(WORD BiosSegment)
{
LPDWORD IntVecTable = (LPDWORD)BaseAddress;
LPBYTE BiosCode = (LPBYTE)SEG_OFF_TO_PTR(BiosSegment, 0);
USHORT i;
WORD CommonStub, BopSeqOffset, Offset;
CommonStub = Offset = 0x00;
CommonStub = Offset = 0;
/* Write the common stub code */
{
// BOP_SEQ:
BiosCode[Offset++] = 0xF8; // clc
BiosCode[Offset++] = 0xF8; // clc
BiosCode[Offset++] = LOBYTE(EMULATOR_BOP); // BOP sequence
BiosCode[Offset++] = HIBYTE(EMULATOR_BOP);
BiosCode[Offset++] = EMULATOR_CTRL_BOP; // Control BOP
BiosCode[Offset++] = CTRL_BOP_INT32; // 32-bit Interrupt dispatcher
BiosCode[Offset++] = LOBYTE(EMULATOR_BOP); // BOP sequence
BiosCode[Offset++] = HIBYTE(EMULATOR_BOP);
BiosCode[Offset++] = EMULATOR_CTRL_BOP; // Control BOP
BiosCode[Offset++] = CTRL_BOP_INT32; // 32-bit Interrupt dispatcher
BiosCode[Offset++] = 0x73; // jnc EXIT (offset +4)
BiosCode[Offset++] = 0x04;
BiosCode[Offset++] = 0x73; // jnc EXIT (offset +4)
BiosCode[Offset++] = 0x04;
BiosCode[Offset++] = 0xFB; // sti
BiosCode[Offset++] = 0xFB; // sti
// HACK: The following instruction should be HLT!
BiosCode[Offset++] = 0x90; // nop
// HACK: The following instruction should be HLT!
BiosCode[Offset++] = 0x90; // nop
BiosCode[Offset++] = 0xEB; // jmp BOP_SEQ (offset -11)
BiosCode[Offset++] = 0xF5;
BiosCode[Offset++] = 0xEB; // jmp BOP_SEQ (offset -11)
BiosCode[Offset++] = 0xF5;
// EXIT:
BiosCode[Offset++] = 0x83; // add sp, 4
BiosCode[Offset++] = 0xC4;
BiosCode[Offset++] = 0x04;
BiosCode[Offset++] = 0x83; // add sp, 4
BiosCode[Offset++] = 0xC4;
BiosCode[Offset++] = 0x04;
BiosCode[Offset++] = 0xCF; // iret
}
BiosCode[Offset++] = 0xCF; // iret
/* Generate ISR stubs and fill the IVT */
for (i = 0x00; i <= 0xFF; i++)
@ -178,12 +176,11 @@ VOID WINAPI InitializeInt32(WORD BiosSegment)
BiosCode[Offset++] = 0x6A; // push 0
BiosCode[Offset++] = 0x00;
BopSeqOffset = CommonStub - Offset - 3;
BopSeqOffset = CommonStub - (Offset + 3);
BiosCode[Offset+0] = 0xE9; // jmp near BOP_SEQ
BiosCode[Offset+1] = LOBYTE(BopSeqOffset);
BiosCode[Offset+2] = HIBYTE(BopSeqOffset);
Offset+=3;
BiosCode[Offset++] = 0xE9; // jmp near BOP_SEQ
BiosCode[Offset++] = LOBYTE(BopSeqOffset);
BiosCode[Offset++] = HIBYTE(BopSeqOffset);
}
}