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https://github.com/AppleWin/AppleWin.git
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The higher g_nDisasmCurLine the more we will have to travel back to find the instruction at the top of the window.
747 lines
21 KiB
C++
747 lines
21 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2021, Tom Charlesworth, Michael Pohoreski, Nick Westgate
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; 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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*/
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#include "StdAfx.h"
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#include "Debug.h"
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#include "../Memory.h"
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//===========================================================================
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const char* FormatAddress(WORD nAddress, int nBytes)
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{
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// There is no symbol for this nAddress
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static TCHAR sSymbol[8] = TEXT("");
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switch (nBytes)
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{
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case 2: wsprintf(sSymbol, TEXT("$%02X"), (unsigned)nAddress); break;
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case 3: wsprintf(sSymbol, TEXT("$%04X"), (unsigned)nAddress); break;
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// TODO: FIXME: Can we get called with nBytes == 16 ??
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default: sSymbol[0] = 0; break; // clear since is static
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}
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return sSymbol;
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}
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//===========================================================================
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char* FormatCharCopy(char* pDst, const char* pSrc, const int nLen)
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{
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for (int i = 0; i < nLen; i++)
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*pDst++ = FormatCharTxtCtrl(*pSrc++);
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return pDst;
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}
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//===========================================================================
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char FormatCharTxtAsci(const BYTE b, bool* pWasAsci_)
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{
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if (pWasAsci_)
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*pWasAsci_ = false;
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char c = (b & 0x7F);
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if (b <= 0x7F)
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{
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if (pWasAsci_)
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{
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*pWasAsci_ = true;
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}
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}
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return c;
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}
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// Note: FormatCharTxtCtrl() and RemapChar()
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//===========================================================================
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char FormatCharTxtCtrl(const BYTE b, bool* pWasCtrl_)
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{
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if (pWasCtrl_)
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*pWasCtrl_ = false;
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char c = (b & 0x7F); // .32 Changed: Lo now maps High Ascii to printable chars. i.e. ML1 D0D0
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if (b < 0x20) // SPACE
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{
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if (pWasCtrl_)
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{
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*pWasCtrl_ = true;
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}
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c = b + '@'; // map ctrl chars to visible
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}
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return c;
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}
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//===========================================================================
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char FormatCharTxtHigh(const BYTE b, bool* pWasHi_)
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{
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if (pWasHi_)
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*pWasHi_ = false;
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char c = b;
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if (b > 0x7F)
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{
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if (pWasHi_)
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{
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*pWasHi_ = true;
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}
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c = (b & 0x7F);
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}
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return c;
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}
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//===========================================================================
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char FormatChar4Font(const BYTE b, bool* pWasHi_, bool* pWasLo_)
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{
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// Most Windows Fonts don't have (printable) glyphs for control chars
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BYTE b1 = FormatCharTxtHigh(b, pWasHi_);
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BYTE b2 = FormatCharTxtCtrl(b1, pWasLo_);
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return b2;
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}
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// Disassembly
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/*
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// Thought about moving MouseText to another location, say high bit, 'A' + 0x80
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// But would like to keep compatibility with existing CHARSET40
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// Since we should be able to display all apple chars 0x00 .. 0xFF with minimal processing
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// Use CONSOLE_COLOR_ESCAPE_CHAR to shift to mouse text
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* Apple Font
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K Mouse Text Up Arror
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H Mouse Text Left Arrow
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J Mouse Text Down Arrow
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* Wingdings
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\xE1 Up Arrow
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\xE2 Down Arrow
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* Webdings // M$ Font
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\x35 Up Arrow
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\x33 Left Arrow (\x71 recycl is too small to make out details)
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\x36 Down Arrow
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* Symols
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\xAD Up Arrow
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\xAF Down Arrow
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* ???
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\x18 Up
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\x19 Down
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*/
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#if USE_APPLE_FONT
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const char* g_sConfigBranchIndicatorUp[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "^", "\x8B" }; // "`K" 0x4B
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const char* g_sConfigBranchIndicatorEqual[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "=", "\x88" }; // "`H" 0x48
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const char* g_sConfigBranchIndicatorDown[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "v", "\x8A" }; // "`J" 0x4A
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#else
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const char* g_sConfigBranchIndicatorUp[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "^", "\x35" };
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const char* g_sConfigBranchIndicatorEqual[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "=", "\x33" };
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char* g_sConfigBranchIndicatorDown[NUM_DISASM_BRANCH_TYPES + 1] = { " ", "v", "\x36" };
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#endif
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// Disassembly ____________________________________________________________________________________
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void GetTargets_IgnoreDirectJSRJMP(const BYTE iOpcode, int& nTargetPointer)
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{
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if (iOpcode == OPCODE_JSR || iOpcode == OPCODE_JMP_A)
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nTargetPointer = NO_6502_TARGET;
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}
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// Get the data needed to disassemble one line of opcodes. Fills in the DisasmLine info.
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// Disassembly formatting flags returned
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// @parama sTargetValue_ indirect/indexed final value
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//===========================================================================
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int GetDisassemblyLine(WORD nBaseAddress, DisasmLine_t& line_)
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// char *sAddress_, char *sOpCodes_,
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// char *sTarget_, char *sTargetOffset_, int & nTargetOffset_,
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// char *sTargetPointer_, char *sTargetValue_,
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// char *sImmediate_, char & nImmediate_, char *sBranch_ )
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{
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line_.Clear();
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int iOpcode;
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int iOpmode;
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int nOpbyte;
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iOpcode = _6502_GetOpmodeOpbyte(nBaseAddress, iOpmode, nOpbyte, &line_.pDisasmData);
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const DisasmData_t* pData = line_.pDisasmData; // Disassembly_IsDataAddress( nBaseAddress );
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line_.iOpcode = iOpcode;
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line_.iOpmode = iOpmode;
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line_.nOpbyte = nOpbyte;
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#if _DEBUG
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// if (iLine != 41)
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// return nOpbytes;
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#endif
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if (iOpmode == AM_M)
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line_.bTargetImmediate = true;
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if ((iOpmode >= AM_IZX) && (iOpmode <= AM_NA))
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line_.bTargetIndirect = true; // ()
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if ((iOpmode >= AM_IZX) && (iOpmode <= AM_NZY))
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line_.bTargetIndexed = true; // ()
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if (((iOpmode >= AM_A) && (iOpmode <= AM_ZY)) || line_.bTargetIndirect)
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line_.bTargetValue = true; // #$
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if ((iOpmode == AM_AX) || (iOpmode == AM_ZX) || (iOpmode == AM_IZX) || (iOpmode == AM_IAX))
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line_.bTargetX = true; // ,X
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if ((iOpmode == AM_AY) || (iOpmode == AM_ZY) || (iOpmode == AM_NZY))
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line_.bTargetY = true; // ,Y
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unsigned int nMinBytesLen = (MAX_OPCODES * (2 + g_bConfigDisasmOpcodeSpaces)); // 2 char for byte (or 3 with space)
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int bDisasmFormatFlags = 0;
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// Composite string that has the symbol or target nAddress
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WORD nTarget = 0;
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if ((iOpmode != AM_IMPLIED) &&
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(iOpmode != AM_1) &&
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(iOpmode != AM_2) &&
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(iOpmode != AM_3))
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{
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// Assume target address starts after the opcode ...
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// BUT in the Assembler Directive / Data Disassembler case for define addr/word
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// the opcode literally IS the target address!
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if (pData)
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{
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nTarget = pData->nTargetAddress;
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}
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else {
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nTarget = mem[(nBaseAddress + 1) & 0xFFFF] | (mem[(nBaseAddress + 2) & 0xFFFF] << 8);
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if (nOpbyte == 2)
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nTarget &= 0xFF;
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}
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if (iOpmode == AM_R) // Relative
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{
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line_.bTargetRelative = true;
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nTarget = nBaseAddress + 2 + (int)(signed char)nTarget;
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line_.nTarget = nTarget;
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sprintf(line_.sTargetValue, "%04X", nTarget & 0xFFFF);
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// Always show branch indicators
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bDisasmFormatFlags |= DISASM_FORMAT_BRANCH;
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if (nTarget < nBaseAddress)
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{
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sprintf(line_.sBranch, "%s", g_sConfigBranchIndicatorUp[g_iConfigDisasmBranchType]);
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}
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else
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if (nTarget > nBaseAddress)
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{
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sprintf(line_.sBranch, "%s", g_sConfigBranchIndicatorDown[g_iConfigDisasmBranchType]);
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}
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else
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{
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sprintf(line_.sBranch, "%s", g_sConfigBranchIndicatorEqual[g_iConfigDisasmBranchType]);
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}
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}
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// intentional re-test AM_R ...
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// if ((iOpmode >= AM_A) && (iOpmode <= AM_NA))
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if ((iOpmode == AM_A) || // Absolute
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(iOpmode == AM_Z) || // Zeropage
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(iOpmode == AM_AX) || // Absolute, X
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(iOpmode == AM_AY) || // Absolute, Y
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(iOpmode == AM_ZX) || // Zeropage, X
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(iOpmode == AM_ZY) || // Zeropage, Y
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(iOpmode == AM_R) || // Relative
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(iOpmode == AM_IZX) || // Indexed (Zeropage Indirect, X)
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(iOpmode == AM_IAX) || // Indexed (Absolute Indirect, X)
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(iOpmode == AM_NZY) || // Indirect (Zeropage) Index, Y
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(iOpmode == AM_NZ) || // Indirect (Zeropage)
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(iOpmode == AM_NA)) //(Indirect Absolute)
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{
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line_.nTarget = nTarget;
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const char* pTarget = NULL;
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const char* pSymbol = 0;
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pSymbol = FindSymbolFromAddress(nTarget);
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// Data Assembler
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if (pData && (!pData->bSymbolLookup))
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pSymbol = 0;
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// Try exact match first
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if (pSymbol)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_SYMBOL;
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pTarget = pSymbol;
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}
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if (!(bDisasmFormatFlags & DISASM_FORMAT_SYMBOL))
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{
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pSymbol = FindSymbolFromAddress(nTarget - 1);
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if (pSymbol)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_SYMBOL;
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bDisasmFormatFlags |= DISASM_FORMAT_OFFSET;
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pTarget = pSymbol;
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line_.nTargetOffset = +1; // U FA82 LDA $3F1 BREAK-1
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}
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}
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// Old Offset search: (Search +1 First) nTarget-1, (Search -1 Second) nTarget+1
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// Problem: U D038 shows as A.TRACE+1
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// New Offset search: (Search -1 First) nTarget+1, (Search +1 Second) nTarget+1
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// Problem: U D834, D87E shows as P.MUL-1, instead of P.ADD+1
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// 2.6.2.31 Fixed: address table was bailing on first possible match. U D000 -> da STOP+1, instead of END-1
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// 2.7.0.0: Try to match nTarget-1, nTarget+1, AND if we have both matches
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// Then we need to decide which one to show. If we have pData then pick this one.
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// TODO: Do we need to let the user decide which one they want searched first?
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// nFirstTarget = g_bDebugConfig_DisasmMatchSymbolOffsetMinus1First ? nTarget-1 : nTarget+1;
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// nSecondTarget = g_bDebugConfig_DisasmMatchSymbolOffsetMinus1First ? nTarget+1 : nTarget-1;
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if (!(bDisasmFormatFlags & DISASM_FORMAT_SYMBOL) || pData)
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{
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pSymbol = FindSymbolFromAddress(nTarget + 1);
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if (pSymbol)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_SYMBOL;
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bDisasmFormatFlags |= DISASM_FORMAT_OFFSET;
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pTarget = pSymbol;
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line_.nTargetOffset = -1; // U FA82 LDA $3F3 BREAK+1
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}
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}
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if (!(bDisasmFormatFlags & DISASM_FORMAT_SYMBOL))
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{
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pTarget = FormatAddress(nTarget, (iOpmode != AM_R) ? nOpbyte : 3); // GH#587: For Bcc opcodes, pretend it's a 3-byte opcode to print a 16-bit target addr
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}
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// sprintf( sTarget, g_aOpmodes[ iOpmode ]._sFormat, pTarget );
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if (bDisasmFormatFlags & DISASM_FORMAT_OFFSET)
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{
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int nAbsTargetOffset = (line_.nTargetOffset > 0) ? line_.nTargetOffset : -line_.nTargetOffset;
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sprintf(line_.sTargetOffset, "%d", nAbsTargetOffset);
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}
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sprintf(line_.sTarget, "%s", pTarget);
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// Indirect / Indexed
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int nTargetPartial;
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int nTargetPartial2;
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int nTargetPointer;
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WORD nTargetValue = 0; // de-ref
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_6502_GetTargets(nBaseAddress, &nTargetPartial, &nTargetPartial2, &nTargetPointer, NULL);
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GetTargets_IgnoreDirectJSRJMP(iOpcode, nTargetPointer); // For *direct* JSR/JMP, don't show 'addr16:byte char'
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if (nTargetPointer != NO_6502_TARGET)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_TARGET_POINTER;
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nTargetValue = *(mem + nTargetPointer) | (*(mem + ((nTargetPointer + 1) & 0xffff)) << 8);
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// if (((iOpmode >= AM_A) && (iOpmode <= AM_NZ)) && (iOpmode != AM_R))
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// sprintf( sTargetValue_, "%04X", nTargetValue ); // & 0xFFFF
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if (g_iConfigDisasmTargets & DISASM_TARGET_ADDR)
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sprintf(line_.sTargetPointer, "%04X", nTargetPointer & 0xFFFF);
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if (iOpcode != OPCODE_JMP_NA && iOpcode != OPCODE_JMP_IAX)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_TARGET_VALUE;
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if (g_iConfigDisasmTargets & DISASM_TARGET_VAL)
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sprintf(line_.sTargetValue, "%02X", nTargetValue & 0xFF);
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bDisasmFormatFlags |= DISASM_FORMAT_CHAR;
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line_.nImmediate = (BYTE)nTargetValue;
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unsigned _char = FormatCharTxtCtrl(FormatCharTxtHigh(line_.nImmediate, NULL), NULL);
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sprintf(line_.sImmediate, "%c", _char);
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// if (ConsoleColorIsEscapeMeta( nImmediate_ ))
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#if OLD_CONSOLE_COLOR
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if (ConsoleColorIsEscapeMeta(_char))
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sprintf(line_.sImmediate, "%c%c", _char, _char);
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else
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sprintf(line_.sImmediate, "%c", _char);
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#endif
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}
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// if (iOpmode == AM_NA ) // Indirect Absolute
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// sprintf( sTargetValue_, "%04X", nTargetPointer & 0xFFFF );
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// else
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// // sprintf( sTargetValue_, "%02X", nTargetValue & 0xFF );
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// sprintf( sTargetValue_, "%04X:%02X", nTargetPointer & 0xFFFF, nTargetValue & 0xFF );
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}
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}
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else
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if (iOpmode == AM_M)
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{
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// sprintf( sTarget, g_aOpmodes[ iOpmode ]._sFormat, (unsigned)nTarget );
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sprintf(line_.sTarget, "%02X", (unsigned)nTarget);
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if (iOpmode == AM_M)
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{
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bDisasmFormatFlags |= DISASM_FORMAT_CHAR;
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line_.nImmediate = (BYTE)nTarget;
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unsigned _char = FormatCharTxtCtrl(FormatCharTxtHigh(line_.nImmediate, NULL), NULL);
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sprintf(line_.sImmediate, "%c", _char);
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#if OLD_CONSOLE_COLOR
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if (ConsoleColorIsEscapeMeta(_char))
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sprintf(line_.sImmediate, "%c%c", _char, _char);
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else
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sprintf(line_.sImmediate, "%c", _char);
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#endif
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}
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}
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}
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sprintf(line_.sAddress, "%04X", nBaseAddress);
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// Opcode Bytes
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FormatOpcodeBytes(nBaseAddress, line_);
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// Data Disassembler
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if (pData)
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{
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line_.iNoptype = pData->eElementType;
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line_.iNopcode = pData->iDirective;
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strcpy(line_.sMnemonic, g_aAssemblerDirectives[line_.iNopcode].m_pMnemonic);
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FormatNopcodeBytes(nBaseAddress, line_);
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}
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else { // Regular 6502/65C02 opcode -> mnemonic
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strcpy(line_.sMnemonic, g_aOpcodes[line_.iOpcode].sMnemonic);
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}
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int nSpaces = strlen(line_.sOpCodes);
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while (nSpaces < (int)nMinBytesLen)
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{
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strcat(line_.sOpCodes, " ");
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nSpaces++;
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}
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return bDisasmFormatFlags;
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}
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//===========================================================================
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void FormatOpcodeBytes(WORD nBaseAddress, DisasmLine_t& line_)
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{
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int nOpbyte = line_.nOpbyte;
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char* pDst = line_.sOpCodes;
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int nMaxOpBytes = nOpbyte;
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if (nMaxOpBytes > MAX_OPCODES) // 2.8.0.0 fix // TODO: FIX: show max 8 bytes for HEX
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nMaxOpBytes = MAX_OPCODES;
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for (int iByte = 0; iByte < nMaxOpBytes; iByte++)
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{
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BYTE nMem = mem[(nBaseAddress + iByte) & 0xFFFF];
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sprintf(pDst, "%02X", nMem); // sBytes+strlen(sBytes)
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pDst += 2;
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// TODO: If Disassembly_IsDataAddress() don't show spaces...
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if (g_bConfigDisasmOpcodeSpaces)
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{
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strcat(pDst, " ");
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pDst++; // 2.5.3.3 fix
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}
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}
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}
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// Formats Target string with bytes,words, string, etc...
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//===========================================================================
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void FormatNopcodeBytes(WORD nBaseAddress, DisasmLine_t& line_)
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{
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char* pDst = line_.sTarget;
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|
const char* pSrc = 0;
|
|
DWORD nStartAddress = line_.pDisasmData->nStartAddress;
|
|
DWORD nEndAddress = line_.pDisasmData->nEndAddress;
|
|
// int nDataLen = nEndAddress - nStartAddress + 1 ;
|
|
int nDisplayLen = nEndAddress - nBaseAddress + 1; // *inclusive* KEEP IN SYNC: _CmdDefineByteRange() CmdDisasmDataList() _6502_GetOpmodeOpbyte() FormatNopcodeBytes()
|
|
int len = nDisplayLen;
|
|
|
|
for (int iByte = 0; iByte < line_.nOpbyte; )
|
|
{
|
|
BYTE nTarget8 = *(LPBYTE)(mem + nBaseAddress + iByte);
|
|
WORD nTarget16 = *(LPWORD)(mem + nBaseAddress + iByte);
|
|
|
|
switch (line_.iNoptype)
|
|
{
|
|
case NOP_BYTE_1:
|
|
case NOP_BYTE_2:
|
|
case NOP_BYTE_4:
|
|
case NOP_BYTE_8:
|
|
sprintf(pDst, "%02X", nTarget8); // sBytes+strlen(sBytes)
|
|
pDst += 2;
|
|
iByte++;
|
|
if (line_.iNoptype == NOP_BYTE_1)
|
|
if (iByte < line_.nOpbyte)
|
|
{
|
|
*pDst++ = ',';
|
|
}
|
|
break;
|
|
case NOP_WORD_1:
|
|
case NOP_WORD_2:
|
|
case NOP_WORD_4:
|
|
sprintf(pDst, "%04X", nTarget16); // sBytes+strlen(sBytes)
|
|
pDst += 4;
|
|
iByte += 2;
|
|
if (iByte < line_.nOpbyte)
|
|
{
|
|
*pDst++ = ',';
|
|
}
|
|
break;
|
|
case NOP_ADDRESS:
|
|
// Nothing to do, already handled :-)
|
|
iByte += 2;
|
|
break;
|
|
case NOP_STRING_APPLESOFT:
|
|
iByte = line_.nOpbyte;
|
|
strncpy(pDst, (const char*)(mem + nBaseAddress), iByte);
|
|
pDst += iByte;
|
|
*pDst = 0;
|
|
case NOP_STRING_APPLE:
|
|
iByte = line_.nOpbyte; // handle all bytes of text
|
|
pSrc = (const char*)mem + nStartAddress;
|
|
|
|
if (len > (MAX_IMMEDIATE_LEN - 2)) // does "text" fit?
|
|
{
|
|
if (len > MAX_IMMEDIATE_LEN) // no; need extra characters for ellipsis?
|
|
len = (MAX_IMMEDIATE_LEN - 3); // ellipsis = true
|
|
|
|
// DISPLAY: text_longer_18...
|
|
FormatCharCopy(pDst, pSrc, len); // BUG: #251 v2.8.0.7: ASC #:# with null byte doesn't mark up properly
|
|
|
|
if (nDisplayLen > len) // ellipsis
|
|
{
|
|
*pDst++ = '.';
|
|
*pDst++ = '.';
|
|
*pDst++ = '.';
|
|
}
|
|
}
|
|
else { // DISPLAY: "max_18_char"
|
|
*pDst++ = '"';
|
|
pDst = FormatCharCopy(pDst, pSrc, len); // BUG: #251 v2.8.0.7: ASC #:# with null byte doesn't mark up properly
|
|
*pDst++ = '"';
|
|
}
|
|
|
|
*pDst = 0;
|
|
break;
|
|
default:
|
|
#if _DEBUG // Unhandled data disassembly!
|
|
int* FATAL = 0;
|
|
*FATAL = 0xDEADC0DE;
|
|
#endif
|
|
iByte++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
void FormatDisassemblyLine(const DisasmLine_t& line, char* sDisassembly, const int nBufferSize)
|
|
{
|
|
//> Address Seperator Opcodes Label Mnemonic Target [Immediate] [Branch]
|
|
//
|
|
// Data Disassembler
|
|
// Label Directive [Immediate]
|
|
const char* pMnemonic = g_aOpcodes[line.iOpcode].sMnemonic;
|
|
|
|
sprintf(sDisassembly, "%s:%s %s "
|
|
, line.sAddress
|
|
, line.sOpCodes
|
|
, pMnemonic
|
|
);
|
|
|
|
/*
|
|
if (line.bTargetIndexed || line.bTargetIndirect)
|
|
{
|
|
strcat( sDisassembly, "(" );
|
|
}
|
|
|
|
if (line.bTargetImmediate)
|
|
strcat( sDisassembly, "#$" );
|
|
|
|
if (line.bTargetValue)
|
|
strcat( sDisassembly, line.sTarget );
|
|
|
|
if (line.bTargetIndirect)
|
|
{
|
|
if (line.bTargetX)
|
|
strcat( sDisassembly, ", X" );
|
|
if (line.bTargetY)
|
|
strcat( sDisassembly, ", Y" );
|
|
}
|
|
|
|
if (line.bTargetIndexed || line.bTargetIndirect)
|
|
{
|
|
strcat( sDisassembly, ")" );
|
|
}
|
|
|
|
if (line.bTargetIndirect)
|
|
{
|
|
if (line.bTargetY)
|
|
strcat( sDisassembly, ", Y" );
|
|
}
|
|
*/
|
|
char sTarget[32];
|
|
|
|
if (line.bTargetValue || line.bTargetRelative || line.bTargetImmediate)
|
|
{
|
|
if (line.bTargetRelative)
|
|
strcpy(sTarget, line.sTargetValue);
|
|
else
|
|
if (line.bTargetImmediate)
|
|
{
|
|
strcat(sDisassembly, "#");
|
|
strncpy(sTarget, line.sTarget, sizeof(sTarget));
|
|
sTarget[sizeof(sTarget) - 1] = 0;
|
|
}
|
|
else
|
|
sprintf(sTarget, g_aOpmodes[line.iOpmode].m_sFormat, line.nTarget);
|
|
|
|
strcat(sDisassembly, "$");
|
|
strcat(sDisassembly, sTarget);
|
|
}
|
|
}
|
|
|
|
// Given an Address, and Line to display it on
|
|
// Calculate the address of the top and bottom lines
|
|
// @param bUpdateCur
|
|
// true = Update Cur based on Top
|
|
// false = Update Top & Bot based on Cur
|
|
//===========================================================================
|
|
void DisasmCalcTopFromCurAddress(bool bUpdateTop)
|
|
{
|
|
int nLen = g_nDisasmCurLine * 3; // max 3 opcodes/instruction, is our search window
|
|
|
|
// Look for a start address that when disassembled,
|
|
// will have the cursor on the specified line and address
|
|
int iTop = g_nDisasmCurAddress - nLen;
|
|
int iCur = g_nDisasmCurAddress;
|
|
|
|
g_bDisasmCurBad = false;
|
|
|
|
bool bFound = false;
|
|
while (iTop <= iCur)
|
|
{
|
|
WORD iAddress = iTop;
|
|
// int iOpcode;
|
|
int iOpmode;
|
|
int nOpbytes;
|
|
|
|
for (int iLine = 0; iLine <= nLen; iLine++) // min 1 opcode/instruction
|
|
{
|
|
// a.
|
|
_6502_GetOpmodeOpbyte(iAddress, iOpmode, nOpbytes);
|
|
// b.
|
|
// _6502_GetOpcodeOpmodeOpbyte( iOpcode, iOpmode, nOpbytes );
|
|
|
|
if (iLine == g_nDisasmCurLine) // && (iAddress == g_nDisasmCurAddress))
|
|
{
|
|
if (iAddress == g_nDisasmCurAddress)
|
|
// b.
|
|
// && (iOpmode != AM_1) &&
|
|
// && (iOpmode != AM_2) &&
|
|
// && (iOpmode != AM_3) &&
|
|
// && _6502_IsOpcodeValid( iOpcode))
|
|
{
|
|
g_nDisasmTopAddress = iTop;
|
|
bFound = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// .20 Fixed: DisasmCalcTopFromCurAddress()
|
|
//if ((eMode >= AM_1) && (eMode <= AM_3))
|
|
#if 0 // _DEBUG
|
|
TCHAR sText[CONSOLE_WIDTH];
|
|
wsprintf(sText, "%04X : %d bytes\n", iAddress, nOpbytes);
|
|
OutputDebugString(sText);
|
|
#endif
|
|
iAddress += nOpbytes;
|
|
}
|
|
if (bFound)
|
|
{
|
|
break;
|
|
}
|
|
iTop++;
|
|
}
|
|
|
|
if (!bFound)
|
|
{
|
|
// Well, we're up the creek.
|
|
// There is no (valid) solution!
|
|
// Basically, there is no address, that when disassembled,
|
|
// will put our Address on the cursor Line!
|
|
// So, like typical game programming, when we don't like the solution, change the problem!
|
|
// if (bUpdateTop)
|
|
g_nDisasmTopAddress = g_nDisasmCurAddress;
|
|
|
|
g_bDisasmCurBad = true; // Bad Disassembler, no opcode for you!
|
|
|
|
// We reall should move the cursor line to the top for one instruction.
|
|
// Moving the cursor line around is not really a good idea, since we're breaking consistency paradigm for the user.
|
|
// g_nDisasmCurLine = 0;
|
|
#if 0 // _DEBUG
|
|
TCHAR sText[CONSOLE_WIDTH * 2];
|
|
sprintf(sText, TEXT("DisasmCalcTopFromCurAddress()\n"
|
|
"\tTop: %04X\n"
|
|
"\tLen: %04X\n"
|
|
"\tMissed: %04X"),
|
|
g_nDisasmCurAddress - nLen, nLen, g_nDisasmCurAddress);
|
|
GetFrame().FrameMessageBox(sText, "ERROR", MB_OK);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
//===========================================================================
|
|
WORD DisasmCalcAddressFromLines(WORD iAddress, int nLines)
|
|
{
|
|
while (nLines-- > 0)
|
|
{
|
|
int iOpmode;
|
|
int nOpbytes;
|
|
_6502_GetOpmodeOpbyte(iAddress, iOpmode, nOpbytes);
|
|
iAddress += nOpbytes;
|
|
}
|
|
return iAddress;
|
|
}
|
|
|
|
|
|
//===========================================================================
|
|
void DisasmCalcCurFromTopAddress()
|
|
{
|
|
g_nDisasmCurAddress = DisasmCalcAddressFromLines(g_nDisasmTopAddress, g_nDisasmCurLine);
|
|
}
|
|
|
|
|
|
//===========================================================================
|
|
void DisasmCalcBotFromTopAddress()
|
|
{
|
|
g_nDisasmBotAddress = DisasmCalcAddressFromLines(g_nDisasmTopAddress, g_nDisasmWinHeight);
|
|
}
|
|
|
|
|
|
//===========================================================================
|
|
void DisasmCalcTopBotAddress()
|
|
{
|
|
DisasmCalcTopFromCurAddress();
|
|
DisasmCalcBotFromTopAddress();
|
|
}
|