1448 lines
44 KiB
C++
1448 lines
44 KiB
C++
/*
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* CiderPress
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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/*
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* Disassemble Apple II binaries.
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*/
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#include "StdAfx.h"
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#include "Disasm.h"
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/*
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* ===========================================================================
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* Common stuff for 65xxx-series CPU
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* ===========================================================================
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*/
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/*
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* The color scheme from Don Lancaster's "Enhancing your Apple II, Volume 1,
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* Second Edition":
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* (1) Paint all subroutine returns (RTS) green (entire line to the right
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* of the 4-character address field).
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* (2) Paint all subroutine calls (JSR) orange (with an extended swipe for
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* out-of-range calls, e.g. JSR $FDED). Paint the target address of
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* the JSR orange as well. Write the name of the target in brown felt
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* tip after the orange arrow, e.g. "COUT (output char)".
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* (3) Paint all absolute jumps pink. Highlight across the entire line
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* (everything but the address). Paint the address field of the target
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* location pink.
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* (4) Show branches in blue, with lines down the left-hand side.
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* (5) Paint constants green ("lda #$74") and variables pink ("sta $38"),
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* highlighting only the operation (i.e. not the hex values in the
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* middle of the listing).
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* (6) Paint the housekeeping yellow (inx, dex, dey, txa, cld, sec, tsx).
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* Draw yellow lines between pha/pla pairs.
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*/
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/*
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* Return the #of bytes required by the specified addressing mode, given a
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* particular CPU and values for the 'e', 'm', and 'x' flags.
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*
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* Width is always > 0. This guarantees that we don't loop forever even if
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* we hit stuff we don't recognize.
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*/
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int ReformatDisasm65xxx::GetOpWidth(OpCode opCode, AddrMode addrMode, CPU cpu,
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bool emul, bool shortM, bool shortX)
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{
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int width = 0;
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switch (addrMode) {
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case kAddrAcc:
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case kAddrImplied:
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case kAddrStackPull:
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case kAddrStackPush:
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case kAddrStackRTI:
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case kAddrStackRTL:
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case kAddrStackRTS:
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width = 1;
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break;
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case kAddrDP:
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case kAddrDPIndexX:
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case kAddrDPIndexY:
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case kAddrDPIndexXInd:
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case kAddrDPInd:
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case kAddrDPIndLong:
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case kAddrDPIndIndexY:
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case kAddrDPIndIndexYLong:
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case kAddrPCRel:
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case kAddrStackRel:
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case kAddrStackRelIndexY:
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case kAddrStackDPInd:
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width = 2;
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break;
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case kAddrAbs:
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case kAddrAbsIndexX:
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case kAddrAbsIndexY:
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case kAddrAbsIndexXInd:
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case kAddrAbsInd:
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case kAddrAbsIndLong:
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case kAddrBlockMove:
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case kAddrPCRelLong:
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case kAddrStackAbs:
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case kAddrStackPCRel:
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width = 3;
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break;
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case kAddrAbsLong:
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case kAddrAbsIndexXLong:
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width = 4;
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break;
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case kAddrStackInt: // BRK/COP
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if (emul || fOneByteBrkCop)
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width = 1;
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else
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width = 2;
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break;
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case kAddrImm:
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width = 2;
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if (!emul) {
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if (opCode == kOpCPX ||
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opCode == kOpCPY ||
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opCode == kOpLDX ||
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opCode == kOpLDY)
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{
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if (!shortX)
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width = 3;
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} else
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if (opCode == kOpADC ||
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opCode == kOpAND ||
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opCode == kOpBIT ||
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opCode == kOpCMP ||
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opCode == kOpEOR ||
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opCode == kOpLDA ||
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opCode == kOpORA ||
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opCode == kOpSBC)
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{
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if (!shortM)
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width = 3;
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} else
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if (opCode == kOpREP ||
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opCode == kOpSEP)
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{
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/* keep width = 2 */
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} else {
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assert(false);
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}
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}
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break;
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case kAddrWDM: // not really defined
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width = 2;
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break;
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case kAddrModeUnknown: // unknown opcode
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width = 1;
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break;
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default:
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assert(false);
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width = 1;
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break;
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}
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assert(width > 0);
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return width;
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}
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/*
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* Returns "true" if it looks like we're pointing at a ProDOS 8 MLI call.
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*
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* The caller is expected to check to see if we're in bank 0.
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*/
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bool ReformatDisasm65xxx::IsP8Call(const uint8_t* srcBuf, long srcLen)
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{
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if (srcLen >= 6 &&
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srcBuf[0] == 0x20 && srcBuf[1] == 0x00 && srcBuf[2] == 0xbf)
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{
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return true;
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}
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return false;
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}
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/*
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* Returns "true" if it looks like we're pointing at a IIgs toolbox call.
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*/
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bool ReformatDisasm65xxx::IsToolboxCall(const uint8_t* srcBuf, long srcLen,
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long backState)
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{
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if (srcLen >= 4 && backState >= 3 &&
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srcBuf[0] == 0x22 && srcBuf[1] == 0x00 && srcBuf[2] == 0x00 &&
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srcBuf[3] == 0xe1 && srcBuf[-3] == 0xa2) // LDX #xxxx
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{
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return true;
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}
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return false;
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}
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/*
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* Returns "true" if it looks like we're pointing at an inline GS/OS call.
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*/
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bool ReformatDisasm65xxx::IsInlineGSOS(const uint8_t* srcBuf, long srcLen)
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{
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if (srcLen >= 10 &&
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srcBuf[0] == 0x22 && srcBuf[1] == 0xa8 && srcBuf[2] == 0x00 &&
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srcBuf[3] == 0xe1)
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{
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return true;
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}
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return false;
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}
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/*
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* Returns "true" if it looks like we're pointing at a stack GS/OS call.
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*/
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bool ReformatDisasm65xxx::IsStackGSOS(const uint8_t* srcBuf, long srcLen,
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long backState)
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{
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if (srcLen >= 4 && backState >= 3 &&
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srcBuf[0] == 0x22 && srcBuf[1] == 0xb0 && srcBuf[2] == 0x00 &&
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srcBuf[3] == 0xe1 && srcBuf[-3] == 0xf4) // PEA xxxx
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{
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return true;
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}
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return false;
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}
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/*
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* Output one or more lines of text similar to what the monitor would output
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* on an 8-bit Apple II.
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*
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* Returns the number of bytes consumed.
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*/
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int ReformatDisasm65xxx::OutputMonitor8(const uint8_t* srcBuf, long srcLen,
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long backState, uint16_t addr)
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{
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const CPU kCPU = kCPU65C02; // 6502 or 65C02
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OpCode opCode;
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AddrMode addrMode;
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int bytesUsed;
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int opAndAddr;
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opAndAddr = kOpMap[*srcBuf].opAndAddr[kCPU];
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opCode = (OpCode) (opAndAddr & 0xff);
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assert(opCode >= kOpCodeUnknown && opCode < kOpCodeMAX);
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addrMode = (AddrMode) (opAndAddr >> 8);
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assert(addrMode >= kAddrModeUnknown && addrMode < kAddrModeMAX);
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bytesUsed = GetOpWidth(opCode, addrMode, kCPU, true, true, true);
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if (IsP8Call(srcBuf, srcLen)) {
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/* print and skip P8 inline call stuff */
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const char* callName;
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callName = NiftyList::LookupP8MLI(srcBuf[3]);
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if (callName == NULL)
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callName = "(Unknown P8 MLI)";
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PrintMonitor8Line(opCode, addrMode, addr, srcBuf, bytesUsed, callName);
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BufPrintf("%04X- %02X $%02X",
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addr+3, srcBuf[3], srcBuf[3]);
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RTFNewPara();
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BufPrintf("%04X- %02X %02X $%02X%02X",
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addr+4, srcBuf[4], srcBuf[5], srcBuf[5], srcBuf[4]);
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RTFNewPara();
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bytesUsed += 3;
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} else
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if (srcLen < bytesUsed) {
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assert(bytesUsed <= kMaxByteConsumption);
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uint8_t tmpBuf[kMaxByteConsumption];
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memset(tmpBuf, 0, kMaxByteConsumption);
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memcpy(tmpBuf, srcBuf, srcLen);
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PrintMonitor8Line(opCode, addrMode, addr, tmpBuf, bytesUsed, NULL);
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} else {
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PrintMonitor8Line(opCode, addrMode, addr, srcBuf, bytesUsed, NULL);
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}
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return bytesUsed;
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}
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/*
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* Output one line of 8-bit monitor stuff.
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*/
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void ReformatDisasm65xxx::PrintMonitor8Line(OpCode opCode, AddrMode addrMode,
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uint16_t addr, const uint8_t* srcBuf, long srcLen, const char* comment)
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{
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char lineBuf[64]; // actual length is about 30 -- does not hold comment
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char* cp;
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const char* mnemonic = kOpCodeDetails[opCode].mnemonic;
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uint8_t byte0, byte1, byte2;
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cp = lineBuf;
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switch (srcLen) {
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case 1:
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byte0 = srcBuf[0];
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byte1 = byte2 = 0xcc; // make bugs more obvious
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cp += sprintf(cp, "%04X- %02X %s", addr, byte0, mnemonic);
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break;
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case 2:
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byte0 = srcBuf[0];
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byte1 = srcBuf[1];
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byte2 = 0xcc;
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cp += sprintf(cp, "%04X- %02X %02X %s", addr, byte0, byte1,
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mnemonic);
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break;
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case 3:
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byte0 = srcBuf[0];
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byte1 = srcBuf[1];
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byte2 = srcBuf[2];
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cp += sprintf(cp, "%04X- %02X %02X %02X %s", addr, byte0, byte1,
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byte2, mnemonic);
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break;
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default:
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assert(false);
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return;
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}
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switch (addrMode) {
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case kAddrImplied:
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case kAddrStackPull:
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case kAddrStackPush:
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case kAddrStackRTI:
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case kAddrStackRTS:
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break;
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case kAddrAcc:
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//cp += sprintf(cp, " A");
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break;
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case kAddrDP:
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cp += sprintf(cp, " $%02X", byte1);
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break;
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case kAddrDPIndexX:
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cp += sprintf(cp, " $%02X,X", byte1);
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break;
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case kAddrDPIndexY:
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cp += sprintf(cp, " $%02X,Y", byte1);
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break;
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case kAddrDPIndexXInd:
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cp += sprintf(cp, " ($%02X,X)", byte1);
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break;
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case kAddrDPInd:
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cp += sprintf(cp, " ($%02X)", byte1);
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break;
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case kAddrDPIndIndexY:
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cp += sprintf(cp, " ($%02X),Y", byte1);
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break;
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case kAddrImm:
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cp += sprintf(cp, " #$%02X", byte1);
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break;
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case kAddrPCRel:
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cp += sprintf(cp, " $%04X", RelOffset(addr, byte1));
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break;
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case kAddrAbs:
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cp += sprintf(cp, " $%02X%02X", byte2, byte1);
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if (comment == NULL)
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comment = NiftyList::Lookup00Addr(byte1 | byte2 << 8);
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break;
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case kAddrAbsIndexX:
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cp += sprintf(cp, " $%02X%02X,X", byte2, byte1);
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break;
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case kAddrAbsIndexY:
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cp += sprintf(cp, " $%02X%02X,Y", byte2, byte1);
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break;
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case kAddrAbsIndexXInd:
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cp += sprintf(cp, " ($%02X%02X,X)", byte2, byte1);
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break;
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case kAddrAbsInd:
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cp += sprintf(cp, " ($%02X%02X)", byte2, byte1);
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break;
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case kAddrStackInt: // BRK/COP
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if (srcLen != 1)
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cp += sprintf(cp, " $%02X", byte1);
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break;
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case kAddrAbsIndLong: // JML
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case kAddrAbsLong:
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case kAddrAbsIndexXLong:
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case kAddrBlockMove:
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case kAddrDPIndLong:
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case kAddrDPIndIndexYLong:
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case kAddrPCRelLong: // BRL
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case kAddrStackAbs: // PEA
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case kAddrStackDPInd: // PEI
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case kAddrStackPCRel: // PER
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case kAddrStackRTL:
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case kAddrStackRel:
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case kAddrStackRelIndexY:
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case kAddrWDM:
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// not for 8-bit mode
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assert(false);
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break;
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case kAddrModeUnknown:
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assert(srcLen == 1);
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break;
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default:
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assert(false);
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break;
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}
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assert(strlen(cp)+1 < sizeof(lineBuf));
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if (comment == NULL)
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BufPrintf("%s", lineBuf);
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else
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BufPrintf("%s %s", lineBuf, comment);
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RTFNewPara();
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}
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/*
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* Output one or more lines of text similar to what the monitor would output
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* on an 8-bit Apple II.
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*
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* Returns the number of bytes consumed.
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*/
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int ReformatDisasm65xxx::OutputMonitor16(const uint8_t* srcBuf, long srcLen,
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long backState, uint32_t addr, bool shortRegs)
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{
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const CPU kCPU = kCPU65816;
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OpCode opCode;
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AddrMode addrMode;
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int bytesUsed;
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int opAndAddr;
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const char* callName;
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opAndAddr = kOpMap[*srcBuf].opAndAddr[kCPU];
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opCode = (OpCode) (opAndAddr & 0xff);
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assert(opCode >= kOpCodeUnknown && opCode < kOpCodeMAX);
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addrMode = (AddrMode) (opAndAddr >> 8);
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assert(addrMode >= kAddrModeUnknown && addrMode < kAddrModeMAX);
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bytesUsed = GetOpWidth(opCode, addrMode, kCPU, false, shortRegs, shortRegs);
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if (Bank(addr) == 0 && IsP8Call(srcBuf, srcLen)) {
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/* print and skip P8 inline call stuff */
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callName = NiftyList::LookupP8MLI(srcBuf[3]);
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if (callName == NULL)
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callName = "(Unknown P8 MLI)";
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PrintMonitor16Line(opCode, addrMode, addr, srcBuf, bytesUsed, callName);
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BufPrintf("00/%04X: %02X %02X",
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addr+3, srcBuf[3], srcBuf[3]);
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RTFNewPara();
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BufPrintf("00/%04X: %02X %02X %02X%02X",
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addr+4, srcBuf[4], srcBuf[5], srcBuf[5], srcBuf[4]);
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RTFNewPara();
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bytesUsed += 3;
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} else
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if (IsToolboxCall(srcBuf, srcLen, backState)) {
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callName = NiftyList::LookupToolbox(srcBuf[-2] | srcBuf[-1] << 8);
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PrintMonitor16Line(opCode, addrMode, addr, srcBuf, bytesUsed, callName);
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} else
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if (IsInlineGSOS(srcBuf, srcLen)) {
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callName = NiftyList::LookupGSOS(srcBuf[4] | srcBuf[5] << 8);
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PrintMonitor16Line(opCode, addrMode, addr, srcBuf, bytesUsed, callName);
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BufPrintf("%02X/%04X: %02X %02X %02X%02X",
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Bank(addr), Offset(addr+4), srcBuf[4], srcBuf[5],
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srcBuf[5], srcBuf[4]);
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RTFNewPara();
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BufPrintf("%02X/%04X: %02X %02X %02X %02X %02X%02X%02X%02X",
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Bank(addr), Offset(addr+6),
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srcBuf[6], srcBuf[7], srcBuf[8], srcBuf[9],
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srcBuf[9], srcBuf[8], srcBuf[7], srcBuf[6]);
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RTFNewPara();
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bytesUsed += 6;
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} else
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if (IsStackGSOS(srcBuf, srcLen, backState)) {
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callName = NiftyList::LookupGSOS(srcBuf[-2] | srcBuf[-1] << 8);
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PrintMonitor16Line(opCode, addrMode, addr, srcBuf, bytesUsed, callName);
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} else
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if (srcLen < bytesUsed) {
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assert(bytesUsed <= kMaxByteConsumption);
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uint8_t tmpBuf[kMaxByteConsumption];
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memset(tmpBuf, 0, kMaxByteConsumption);
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memcpy(tmpBuf, srcBuf, srcLen);
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PrintMonitor16Line(opCode, addrMode, addr, tmpBuf, bytesUsed, NULL);
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} else {
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PrintMonitor16Line(opCode, addrMode, addr, srcBuf, bytesUsed, NULL);
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}
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return bytesUsed;
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}
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|
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/*
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* Output one line of 16-bit monitor stuff.
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*/
|
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void ReformatDisasm65xxx::PrintMonitor16Line(OpCode opCode, AddrMode addrMode,
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uint32_t addr, const uint8_t* srcBuf, long srcLen, const char* comment)
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|
{
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char lineBuf[64]; // actual length is about 30 -- does not hold comment
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char* cp;
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const char* mnemonic = kOpCodeDetails[opCode].mnemonic;
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uint8_t byte0, byte1, byte2, byte3;
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int16_t offset;
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cp = lineBuf;
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cp += sprintf(cp, "%02X/%04X: ", addr >> 16, addr & 0xffff);
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|
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switch (srcLen) {
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case 1:
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byte0 = srcBuf[0];
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byte1 = byte2 = byte3 = 0xcc; // make bugs more obvious
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cp += sprintf(cp, "%02X %s", byte0, mnemonic);
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break;
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case 2:
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byte0 = srcBuf[0];
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byte1 = srcBuf[1];
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byte2 = byte3 = 0xcc;
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cp += sprintf(cp, "%02X %02X %s", byte0, byte1, mnemonic);
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break;
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case 3:
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byte0 = srcBuf[0];
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byte1 = srcBuf[1];
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byte2 = srcBuf[2];
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byte3 = 0xcc;
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cp += sprintf(cp, "%02X %02X %02X %s", byte0, byte1, byte2,
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mnemonic);
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break;
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case 4:
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byte0 = srcBuf[0];
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byte1 = srcBuf[1];
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byte2 = srcBuf[2];
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byte3 = srcBuf[3];
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cp += sprintf(cp, "%02X %02X %02X %02X %s", byte0, byte1, byte2,
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byte3, mnemonic);
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|
break;
|
|
default:
|
|
assert(false);
|
|
return;
|
|
}
|
|
|
|
switch (addrMode) {
|
|
case kAddrImplied:
|
|
case kAddrStackPull:
|
|
case kAddrStackPush:
|
|
case kAddrStackRTI:
|
|
case kAddrStackRTS:
|
|
case kAddrStackRTL:
|
|
break;
|
|
case kAddrAcc:
|
|
//cp += sprintf(cp, " A");
|
|
break;
|
|
|
|
case kAddrDP:
|
|
cp += sprintf(cp, " %02X", byte1);
|
|
break;
|
|
case kAddrDPIndexX:
|
|
cp += sprintf(cp, " %02X,X", byte1);
|
|
break;
|
|
case kAddrDPIndexY:
|
|
cp += sprintf(cp, " %02X,Y", byte1);
|
|
break;
|
|
case kAddrDPIndexXInd:
|
|
cp += sprintf(cp, " (%02X,X)", byte1);
|
|
break;
|
|
case kAddrDPInd:
|
|
cp += sprintf(cp, " (%02X)", byte1);
|
|
break;
|
|
case kAddrDPIndIndexY:
|
|
cp += sprintf(cp, " (%02X),Y", byte1);
|
|
break;
|
|
case kAddrImm:
|
|
if (srcLen == 2)
|
|
cp += sprintf(cp, " #%02X", byte1);
|
|
else
|
|
cp += sprintf(cp, " #%02X%02X", byte2, byte1);
|
|
break;
|
|
case kAddrPCRel:
|
|
offset = (char) byte1;
|
|
if (offset < 0)
|
|
cp += sprintf(cp, " %04X {-%02X}",
|
|
RelOffset((uint16_t) addr, byte1), -offset);
|
|
else
|
|
cp += sprintf(cp, " %04X {+%02X}",
|
|
RelOffset((uint16_t) addr, byte1), offset);
|
|
break;
|
|
|
|
case kAddrAbs:
|
|
cp += sprintf(cp, " %02X%02X", byte2, byte1);
|
|
if (comment == NULL && Bank(addr) == 0)
|
|
comment = NiftyList::Lookup00Addr(byte1 | byte2 << 8);
|
|
break;
|
|
case kAddrAbsIndexX:
|
|
cp += sprintf(cp, " %02X%02X,X", byte2, byte1);
|
|
break;
|
|
case kAddrAbsIndexY:
|
|
cp += sprintf(cp, " %02X%02X,Y", byte2, byte1);
|
|
break;
|
|
case kAddrAbsIndexXInd:
|
|
cp += sprintf(cp, " (%02X%02X,X)", byte2, byte1);
|
|
break;
|
|
case kAddrAbsInd:
|
|
cp += sprintf(cp, " (%02X%02X)", byte2, byte1);
|
|
break;
|
|
case kAddrWDM:
|
|
case kAddrStackInt: // BRK/COP
|
|
if (srcLen != 1)
|
|
cp += sprintf(cp, " %02X", byte1);
|
|
break;
|
|
|
|
case kAddrAbsIndLong: // JML
|
|
cp += sprintf(cp, " (%02X%02X)", byte2, byte1);
|
|
break;
|
|
case kAddrAbsLong:
|
|
cp += sprintf(cp, " %02X%02X%02X", byte3, byte2, byte1);
|
|
if (comment == NULL) {
|
|
if (byte3 == 0x00)
|
|
comment = NiftyList::Lookup00Addr(byte1 | byte2 << 8);
|
|
else if (byte3 == 0x01)
|
|
comment = NiftyList::Lookup01Vector(byte1 | byte2 << 8);
|
|
else if (byte3 == 0xe0)
|
|
comment = NiftyList::LookupE0Vector(byte1 | byte2 << 8);
|
|
else if (byte3 == 0xe1)
|
|
comment = NiftyList::LookupE1Vector(byte1 | byte2 << 8);
|
|
}
|
|
break;
|
|
case kAddrAbsIndexXLong:
|
|
cp += sprintf(cp, " %02X%02X%02X,X", byte3, byte2, byte1);
|
|
break;
|
|
case kAddrBlockMove:
|
|
cp += sprintf(cp, " %02X%02X", byte2, byte1);
|
|
break;
|
|
case kAddrDPIndLong:
|
|
cp += sprintf(cp, " [%02X]", byte1);
|
|
break;
|
|
case kAddrDPIndIndexYLong:
|
|
cp += sprintf(cp, " [%02X],Y", byte1);
|
|
break;
|
|
case kAddrStackPCRel: // PER
|
|
case kAddrPCRelLong: // BRL
|
|
offset = (short) (byte1 | byte2 << 8);
|
|
if (offset < 0)
|
|
cp += sprintf(cp, " %04X {-%02X}",
|
|
RelLongOffset((uint16_t) addr, offset), -offset);
|
|
else
|
|
cp += sprintf(cp, " %04X {+%02X}",
|
|
RelLongOffset((uint16_t) addr, offset), offset);
|
|
break;
|
|
case kAddrStackAbs: // PEA
|
|
cp += sprintf(cp, " %02X%02X", byte2, byte1);
|
|
break;
|
|
case kAddrStackDPInd: // PEI
|
|
cp += sprintf(cp, " %02X", byte1);
|
|
break;
|
|
case kAddrStackRel:
|
|
cp += sprintf(cp, " %02X,S", byte1);
|
|
break;
|
|
case kAddrStackRelIndexY:
|
|
cp += sprintf(cp, " (%02X,S),Y", byte1);
|
|
break;
|
|
case kAddrModeUnknown:
|
|
assert(srcLen == 1);
|
|
break;
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
|
|
assert(strlen(cp)+1 < sizeof(lineBuf));
|
|
if (comment == NULL)
|
|
BufPrintf("%s", lineBuf);
|
|
else {
|
|
if (srcLen < 4)
|
|
BufPrintf("%s %s", lineBuf, comment);
|
|
else
|
|
BufPrintf("%s %s", lineBuf, comment);
|
|
}
|
|
RTFNewPara();
|
|
}
|
|
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* Disassemble 8-bit code
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* For ProDOS 8 and DOS 3.3 stuff, we can't say for sure whether a "BIN"
|
|
* file is code or, say, a hi-res graphic. We use "maybe" level to put
|
|
* disassembly below other formats.
|
|
*/
|
|
void ReformatDisasm8::Examine(ReformatHolder* pHolder)
|
|
{
|
|
ReformatHolder::ReformatApplies applies = ReformatHolder::kApplicNot;
|
|
int fileType = pHolder->GetFileType();
|
|
|
|
if (fileType >= 0xf1 && fileType <= 0xf8) {
|
|
applies = ReformatHolder::kApplicProbablyNot;
|
|
} else if (fileType == 0x00 &&
|
|
pHolder->GetSourceFormat() != ReformatHolder::kSourceFormatCPM)
|
|
{
|
|
applies = ReformatHolder::kApplicProbablyNot;
|
|
} else if (fileType == kTypeBIN) {
|
|
applies = ReformatHolder::kApplicMaybe;
|
|
} else if (fileType == kTypeSYS || fileType == kTypeCMD ||
|
|
fileType == kType8OB || fileType == kTypeP8C)
|
|
{
|
|
applies = ReformatHolder::kApplicYes;
|
|
}
|
|
|
|
pHolder->SetApplic(ReformatHolder::kReformatMonitor8, applies,
|
|
ReformatHolder::kApplicNot, ReformatHolder::kApplicNot);
|
|
|
|
// not doing this yet
|
|
pHolder->SetApplic(ReformatHolder::kReformatDisasmMerlin8,
|
|
ReformatHolder::kApplicNot,
|
|
ReformatHolder::kApplicNot, ReformatHolder::kApplicNot);
|
|
}
|
|
|
|
/*
|
|
* Create a monitor listing or disassembly of a file.
|
|
*/
|
|
int ReformatDisasm8::Process(const ReformatHolder* pHolder,
|
|
ReformatHolder::ReformatID id, ReformatHolder::ReformatPart part,
|
|
ReformatOutput* pOutput)
|
|
{
|
|
const uint8_t* srcBuf = pHolder->GetSourceBuf(part);
|
|
long srcLen = pHolder->GetSourceLen(part);
|
|
long fileType = pHolder->GetFileType();
|
|
long backState = 0;
|
|
uint16_t addr;
|
|
fUseRTF = false;
|
|
|
|
if (!srcLen)
|
|
return -1;
|
|
|
|
RTFBegin();
|
|
|
|
/* pick a nice 16-bit start address */
|
|
if (fileType == kTypeSYS || fileType == kTypeP8C || fileType == kType8OB)
|
|
addr = 0x2000;
|
|
else if (fileType == kTypeBIN || fileType == kTypeCMD)
|
|
addr = (uint16_t) pHolder->GetAuxType();
|
|
else
|
|
addr = 0x0000;
|
|
|
|
while (srcLen > 0) {
|
|
int consumed;
|
|
|
|
consumed = OutputMonitor8(srcBuf, srcLen, backState, addr);
|
|
|
|
srcBuf += consumed;
|
|
srcLen -= consumed;
|
|
backState += consumed;
|
|
addr += consumed;
|
|
}
|
|
|
|
RTFEnd();
|
|
SetResultBuffer(pOutput);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* Disassemble 16-bit code
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* For 16-bit stuff, the file types are always explicit. However, there are
|
|
* instances of 65802/65816 code being written for 8-bit platforms, so we
|
|
* want to keep 16-bit disassembly available but prioritized below "raw" for
|
|
* BIN files.
|
|
*/
|
|
void ReformatDisasm16::Examine(ReformatHolder* pHolder)
|
|
{
|
|
ReformatHolder::ReformatApplies applies = ReformatHolder::kApplicNot;
|
|
long fileType = pHolder->GetFileType();
|
|
|
|
if (fileType == kTypeBIN || fileType == kTypeSYS || fileType == kTypeCMD ||
|
|
fileType == kType8OB || fileType == kTypeP8C)
|
|
{
|
|
applies = ReformatHolder::kApplicProbablyNot;
|
|
} else if (fileType == 0x00 &&
|
|
pHolder->GetSourceFormat() != ReformatHolder::kSourceFormatCPM)
|
|
{
|
|
applies = ReformatHolder::kApplicProbablyNot;
|
|
} else {
|
|
/*
|
|
* Interesting file types (GS/OS ref table F-1):
|
|
* $B1 OBJ Object
|
|
* $B2 LIB Library
|
|
* $B3 S16 GS/OS or ProDOS 16 app
|
|
* $B4 RTL Run-time library
|
|
* $B5 EXE Shell application
|
|
* $B6 PIF Permanent initialization
|
|
* $B7 TIF Temporary initialization
|
|
* $B8 NDA New desk accessory
|
|
* $B9 CDA Classic desk accessory
|
|
* $BA TOL Tool set file
|
|
* $BB DVR Apple IIgs device driver
|
|
* $BC LDF Generic load file (application-specific)
|
|
* $BD FST GS/OS file system translator
|
|
*
|
|
* We also handle non-OMF files:
|
|
* $F9 OS GS/OS System file
|
|
*/
|
|
if (fileType >= kTypeOBJ && fileType <= kTypeFST)
|
|
applies = ReformatHolder::kApplicYes;
|
|
else if (fileType == kTypeOS)
|
|
applies = ReformatHolder::kApplicYes;
|
|
}
|
|
|
|
pHolder->SetApplic(ReformatHolder::kReformatMonitor16Long, applies,
|
|
ReformatHolder::kApplicNot, ReformatHolder::kApplicNot);
|
|
pHolder->SetApplic(ReformatHolder::kReformatMonitor16Short, applies,
|
|
ReformatHolder::kApplicNot, ReformatHolder::kApplicNot);
|
|
pHolder->SetApplicPreferred(ReformatHolder::kReformatMonitor16Long);
|
|
|
|
// not doing this yet
|
|
pHolder->SetApplic(ReformatHolder::kReformatDisasmOrcam16,
|
|
ReformatHolder::kApplicNot,
|
|
ReformatHolder::kApplicNot, ReformatHolder::kApplicNot);
|
|
}
|
|
|
|
/*
|
|
* Disassemble or show monitor listing for 16-bit code.
|
|
*/
|
|
int ReformatDisasm16::Process(const ReformatHolder* pHolder,
|
|
ReformatHolder::ReformatID id, ReformatHolder::ReformatPart part,
|
|
ReformatOutput* pOutput)
|
|
{
|
|
const uint8_t* srcBuf = pHolder->GetSourceBuf(part);
|
|
long srcLen = pHolder->GetSourceLen(part);
|
|
long fileType = pHolder->GetFileType();
|
|
uint32_t addr = 0;
|
|
bool shortRegs;
|
|
|
|
fUseRTF = false;
|
|
|
|
if (!srcLen)
|
|
return -1;
|
|
|
|
RTFBegin();
|
|
|
|
if (id == ReformatHolder::kReformatMonitor16Long)
|
|
shortRegs = false;
|
|
else
|
|
shortRegs = true;
|
|
fOneByteBrkCop = pHolder->GetOption(ReformatHolder::kOptOneByteBrkCop) != 0;
|
|
|
|
if (fileType >= kTypeOBJ && fileType <= kTypeFST) {
|
|
if (!OutputOMF(srcBuf, srcLen, fileType, shortRegs)) {
|
|
/* must not be OMF; do a generic list */
|
|
fExpBuf.Reset();
|
|
BufPrintf("[ Valid OMF expected but not found ]\r\n");
|
|
RTFNewPara();
|
|
OutputSection(srcBuf, srcLen, addr, shortRegs);
|
|
}
|
|
} else {
|
|
/* pick a start address in bank 0 */
|
|
if (fileType == kTypeSYS)
|
|
addr = 0x2000;
|
|
else if (fileType == kTypeBIN || fileType == kTypeCMD)
|
|
addr = (uint16_t) pHolder->GetAuxType();
|
|
OutputSection(srcBuf, srcLen, addr, shortRegs);
|
|
}
|
|
|
|
RTFEnd();
|
|
SetResultBuffer(pOutput);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Output one section of a file.
|
|
*/
|
|
void ReformatDisasm16::OutputSection(const uint8_t* srcBuf, long srcLen,
|
|
uint32_t addr, bool shortRegs)
|
|
{
|
|
long backState = 0;
|
|
|
|
while (srcLen > 0) {
|
|
int consumed;
|
|
|
|
consumed = OutputMonitor16(srcBuf, srcLen, backState, addr, shortRegs);
|
|
|
|
srcBuf += consumed;
|
|
srcLen -= consumed;
|
|
backState += consumed;
|
|
addr += consumed;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Break an OMF file into sections, and output each individually.
|
|
*/
|
|
bool ReformatDisasm16::OutputOMF(const uint8_t* srcBuf, long srcLen,
|
|
long fileType, bool shortRegs)
|
|
{
|
|
const uint8_t* origBuf = srcBuf;
|
|
long origLen = srcLen;
|
|
OMFSegmentHeader segHdr;
|
|
int segmentNumber = 1;
|
|
|
|
BufPrintf(";\r\n");
|
|
BufPrintf("; OMF segment summary:\r\n");
|
|
BufPrintf(";\r\n");
|
|
|
|
/* pass #1: print a preview */
|
|
while (srcLen > 0) {
|
|
if (!segHdr.Unpack(srcBuf, srcLen, fileType)) {
|
|
if (segmentNumber == 1)
|
|
return false;
|
|
else {
|
|
BufPrintf("; (bad header found, ignoring last %ld bytes)\r\n",
|
|
srcLen);
|
|
break; // out of while; display what we have
|
|
}
|
|
}
|
|
|
|
PrintHeader(&segHdr, segmentNumber, false);
|
|
|
|
srcBuf += segHdr.GetSegmentLen();
|
|
srcLen -= segHdr.GetSegmentLen();
|
|
segmentNumber++;
|
|
}
|
|
BufPrintf(";\r\n");
|
|
RTFNewPara();
|
|
|
|
segmentNumber = 1;
|
|
srcBuf = origBuf;
|
|
srcLen = origLen;
|
|
while (srcLen > 0) {
|
|
if (!segHdr.Unpack(srcBuf, srcLen, fileType)) {
|
|
BufPrintf("!!!\r\n");
|
|
BufPrintf("!!! Found bad OMF header at offset 0x%04x (remaining len=%ld)\r\n",
|
|
srcBuf - origBuf, srcLen);
|
|
BufPrintf("!!!\r\n");
|
|
RTFNewPara();
|
|
if (segmentNumber == 1)
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
PrintHeader(&segHdr, segmentNumber, true);
|
|
|
|
PrintSegment(&segHdr, srcBuf, srcLen, shortRegs);
|
|
RTFNewPara();
|
|
|
|
srcBuf += segHdr.GetSegmentLen();
|
|
srcLen -= segHdr.GetSegmentLen();
|
|
segmentNumber++;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Print the interesting bits of the header.
|
|
*/
|
|
void ReformatDisasm16::PrintHeader(const OMFSegmentHeader* pSegHdr,
|
|
int segmentNumber, bool longFmt)
|
|
{
|
|
//pSegHdr->Dump();
|
|
|
|
const char* versStr;
|
|
switch (pSegHdr->GetVersion()) {
|
|
case 0: versStr = "0.0"; break;
|
|
case 1: versStr = "1.0"; break;
|
|
case 2: versStr = "2.0"; break;
|
|
case 0x82: versStr = "2.1"; break;
|
|
default: versStr = "(unknown)"; break;
|
|
}
|
|
|
|
const char* typeStr;
|
|
switch (pSegHdr->GetSegmentType()) {
|
|
case OMFSegmentHeader::kTypeCode: typeStr = "CODE"; break;
|
|
case OMFSegmentHeader::kTypeData: typeStr = "DATA"; break;
|
|
case OMFSegmentHeader::kTypeJumpTable: typeStr = "JumpTab"; break;
|
|
case OMFSegmentHeader::kTypePathName: typeStr = "PathName"; break;
|
|
case OMFSegmentHeader::kTypeLibraryDict: typeStr = "LibDict"; break;
|
|
case OMFSegmentHeader::kTypeInit: typeStr = "Init"; break;
|
|
case OMFSegmentHeader::kTypeAbsoluteBank: typeStr = "AbsBank"; break;
|
|
case OMFSegmentHeader::kTypeDPStack: typeStr = "DP/Stack"; break;
|
|
default: typeStr = "(unknown)"; break;
|
|
}
|
|
|
|
if (longFmt) {
|
|
BufPrintf(";\r\n");
|
|
BufPrintf("; Segment #%d (%d): loadName='%s' segName='%s': \r\n",
|
|
segmentNumber, pSegHdr->GetSegNum(),
|
|
pSegHdr->GetLoadName(), pSegHdr->GetSegName());
|
|
BufPrintf("; type=%s length=%ld OMF v%s\r\n",
|
|
typeStr, pSegHdr->GetSegmentLen(), versStr);
|
|
BufPrintf("; flags:%s%s%s%s%s%s%s%s\r\n",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagBankRelative) ? " bankRel" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagSkip) ? " skip" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagReload) ? " reload" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagAbsoluteBank) ? " absBank" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagNoSpecialMem) ? " noSpecial" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagPositionIndep) ? " posnIndep" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagPrivate) ? " private" : "",
|
|
pSegHdr->GetSegmentFlag(OMFSegmentHeader::kFlagDynamic) ? " dynamic" : "");
|
|
BufPrintf(";");
|
|
RTFNewPara();
|
|
} else {
|
|
BufPrintf("; #%02d: %-8s len=0x%06x loadName='%s' segName='%s'\r\n",
|
|
segmentNumber, typeStr, pSegHdr->GetSegmentLen(),
|
|
pSegHdr->GetLoadName(), pSegHdr->GetSegName());
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Print the contents of the segment.
|
|
*/
|
|
void ReformatDisasm16::PrintSegment(const OMFSegmentHeader* pSegHdr,
|
|
const uint8_t* srcBuf, long srcLen, bool shortRegs)
|
|
{
|
|
uint32_t subLen;
|
|
int offset = 0;
|
|
|
|
assert(pSegHdr != NULL);
|
|
assert(srcBuf != NULL);
|
|
assert(srcLen > 0);
|
|
|
|
srcBuf += pSegHdr->GetDispData();
|
|
srcLen -= pSegHdr->GetDispData();
|
|
if (srcLen < 0) {
|
|
BufPrintf("GLITCH: ran out of data\r\n");
|
|
return;
|
|
}
|
|
|
|
if (*srcBuf == 0xf2 && srcLen >= 5) {
|
|
/* handle kSegOpLCONST just for fun */
|
|
subLen = Get32LE(srcBuf+1);
|
|
BufPrintf("OMF: LCONST record (0x%04x bytes follow)\r\n", subLen);
|
|
offset = 5;
|
|
}
|
|
OutputSection(srcBuf + offset,
|
|
pSegHdr->GetSegmentLen() - pSegHdr->GetDispData() - offset,
|
|
0x000000, shortRegs);
|
|
|
|
#if 0
|
|
OMFSegment seg;
|
|
seg.Setup(pSegHdr, srcBuf, srcLen);
|
|
const uint8_t* ptr;
|
|
|
|
do {
|
|
ptr = seg.ProcessNextChunk();
|
|
if (ptr == NULL) {
|
|
BufPrintf("!!! bogus OMF values encountered\r\n");
|
|
return;
|
|
}
|
|
|
|
switch (*ptr) {
|
|
case OMFSegment::kSegOpEND:
|
|
BufPrintf("OMF: END (bytesLeft=%d)\r\n", (ptr+1) - srcBuf);
|
|
break;
|
|
}
|
|
} while (*ptr != OMFSegment::kSegOpEND);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* OMFSegmentHeader
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Unpack an OMF segment header from the current offset.
|
|
*
|
|
* Returns "true" on success, "false" on failure.
|
|
*/
|
|
bool OMFSegmentHeader::Unpack(const uint8_t* srcBuf, long srcLen, int fileType)
|
|
{
|
|
if (srcLen < kHdrMinSize) {
|
|
LOGI("OMF: Too short to be segment (%ld)", srcLen);
|
|
return false;
|
|
}
|
|
|
|
fVersion = *(srcBuf + 0x0f);
|
|
if (fVersion > kMaxVersion) {
|
|
LOGI("OMF: Wrong version number to be OMF (%d)", fVersion);
|
|
return false;
|
|
}
|
|
|
|
fRevision = 0;
|
|
if (fVersion == 0) {
|
|
/* unpack OMF v0.0 (not actually used for 16-bit code?) */
|
|
if (srcLen < kV0HdrMinSize)
|
|
return false;
|
|
|
|
fBlockCnt = Get32LE(srcBuf + 0x00);
|
|
fResSpc = Get32LE(srcBuf + 0x04);
|
|
fLength = Get32LE(srcBuf + 0x08);
|
|
fType = *(srcBuf + 0x0c);
|
|
fLabLen = *(srcBuf + 0x0d);
|
|
fNumLen = *(srcBuf + 0x0e);
|
|
fBankSize = Get32LE(srcBuf + 0x10);
|
|
fOrg = Get32LE(srcBuf + 0x14);
|
|
fAlign = Get32LE(srcBuf + 0x18);
|
|
fNumSex = *(srcBuf + 0x1c);
|
|
|
|
fByteCnt = fBlockCnt * 512;
|
|
fKind = 0;
|
|
fLCBank = 0;
|
|
fSegNum = 0;
|
|
fEntry = 0;
|
|
fTempOrg = 0;
|
|
fDispName = 0x24;
|
|
if (fLabLen == 0)
|
|
fDispData = fDispName + *(srcBuf + fDispName);
|
|
else
|
|
fDispData = fDispName + fLabLen;
|
|
} else if (fVersion == 1) {
|
|
/* unpack OMF v1.0 */
|
|
if (srcLen < kV1HdrMinSize)
|
|
return false;
|
|
fBlockCnt = Get32LE(srcBuf + 0x00);
|
|
fResSpc = Get32LE(srcBuf + 0x04);
|
|
fLength = Get32LE(srcBuf + 0x08);
|
|
fType = *(srcBuf + 0x0c);
|
|
fLabLen = *(srcBuf + 0x0d);
|
|
fNumLen = *(srcBuf + 0x0e);
|
|
fBankSize = Get32LE(srcBuf + 0x10);
|
|
// unused32 at 0x14
|
|
fOrg = Get32LE(srcBuf + 0x18);
|
|
fAlign = Get32LE(srcBuf + 0x1c);
|
|
fNumSex = *(srcBuf + 0x20);
|
|
fLCBank = *(srcBuf + 0x21);
|
|
fSegNum = Get16LE(srcBuf + 0x22);
|
|
fEntry = Get32LE(srcBuf + 0x24);
|
|
fDispName = Get16LE(srcBuf + 0x28);
|
|
fDispData = Get16LE(srcBuf + 0x2a);
|
|
|
|
/*
|
|
* Orca/APW libs seem to use version 1 with a byte count in the
|
|
* first field, but the "LLRE" app has version 1 with a block count.
|
|
* The spec is pretty clear, so it looks like somebody's library
|
|
* builder screwed up.
|
|
*
|
|
* Special case type=LIB ($B2).
|
|
*/
|
|
if (fileType == 0xb2) {
|
|
LOGI("NOTE: switching blockCount=%ld to byte count", fBlockCnt);
|
|
fByteCnt = fBlockCnt;
|
|
fBlockCnt = 0;
|
|
} else {
|
|
fByteCnt = fBlockCnt * 512;
|
|
}
|
|
fKind = 0;
|
|
fTempOrg = 0;
|
|
} else {
|
|
/* unpack OMF v2.x */
|
|
if (srcLen < kV2HdrMinSize)
|
|
return false;
|
|
fByteCnt = Get32LE(srcBuf + 0x00);
|
|
fResSpc = Get32LE(srcBuf + 0x04);
|
|
fLength = Get32LE(srcBuf + 0x08);
|
|
// unused at +0x0c
|
|
fLabLen = *(srcBuf + 0x0d);
|
|
fNumLen = *(srcBuf + 0x0e);
|
|
fBankSize = Get32LE(srcBuf + 0x10);
|
|
fKind = Get16LE(srcBuf + 0x14);
|
|
// unused at +0x16
|
|
fOrg = Get32LE(srcBuf + 0x18);
|
|
fAlign = Get32LE(srcBuf + 0x1c);
|
|
fNumSex = *(srcBuf + 0x20);
|
|
fSegNum = Get16LE(srcBuf + 0x22);
|
|
// unused at +0x23
|
|
fEntry = Get32LE(srcBuf + 0x24);
|
|
fDispName = Get16LE(srcBuf + 0x28);
|
|
fDispData = Get16LE(srcBuf + 0x2a);
|
|
if (fDispName > 0x2c) {
|
|
// v2.1 adds a 4-byte "tempOrg" field
|
|
fTempOrg = Get32LE(srcBuf + 0x2c);
|
|
fRevision = 1;
|
|
} else {
|
|
fTempOrg = 0;
|
|
}
|
|
|
|
fBlockCnt = 0;
|
|
fType = 0;
|
|
fLCBank = 0;
|
|
}
|
|
|
|
|
|
/* validate fields */
|
|
if (fByteCnt < kHdrMinSize || fByteCnt > (uint32_t) srcLen) {
|
|
LOGI("OMF: Bad value for byteCnt (%ld, srcLen=%ld min=%d)",
|
|
fByteCnt, srcLen, kHdrMinSize);
|
|
return false;
|
|
}
|
|
if (fDispName < 0x24 || fDispName > (srcLen - kLoadNameLen)) {
|
|
LOGI("OMF: Bad value for dispName (%d, srcLen=%ld)",
|
|
fDispName, srcLen);
|
|
return false;
|
|
}
|
|
if (fDispData < 0x24 || fDispData > srcLen) {
|
|
LOGI("OMF: Bad value for dispData (%d, srcLen=%ld)",
|
|
fDispData, srcLen);
|
|
return false;
|
|
}
|
|
if (fDispData < fDispName + kLoadNameLen) {
|
|
LOGI("OMF: dispData is inside label region (%d / %d)",
|
|
fDispData, fDispName);
|
|
return false;
|
|
}
|
|
if (fBankSize != kExpectedBankSize && fBankSize != 0) {
|
|
LOGI("OMF: NOTE: bankSize=%ld", fBankSize);
|
|
/* allowed, just weird */
|
|
}
|
|
if (fNumLen != kExpectedNumLen || fNumSex != 0) {
|
|
LOGI("OMF: WARNING: numLen=%d numSex=%d", fNumLen, fNumSex);
|
|
/* big endian odd-sized numbers?? keep going, I guess */
|
|
}
|
|
|
|
const uint8_t* segName;
|
|
int segLabelLen;
|
|
|
|
/* copy the label entries over */
|
|
segName = srcBuf + fDispName;
|
|
if (fVersion > 0) {
|
|
memcpy(fLoadName, srcBuf + fDispName, kLoadNameLen);
|
|
fLoadName[kLoadNameLen] = '\0';
|
|
|
|
segName += kLoadNameLen;
|
|
} else {
|
|
fLoadName[0] = '\0';
|
|
}
|
|
|
|
if (fLabLen == 0) {
|
|
/* pascal-style string */
|
|
segLabelLen = *segName++;
|
|
memcpy(fSegName, segName, segLabelLen);
|
|
fSegName[segLabelLen] = '\0';
|
|
LOGI(" OMF: Pascal segment label '%hs'", fSegName);
|
|
} else {
|
|
/* C-style or non-terminated string */
|
|
segLabelLen = fLabLen;
|
|
memcpy(fSegName, segName, segLabelLen);
|
|
fSegName[segLabelLen] = '\0';
|
|
LOGI(" OMF: Std segment label '%hs'", fSegName);
|
|
}
|
|
|
|
fReady = true;
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
* Pry the segment type out of the "type" or "kind" field.
|
|
*/
|
|
OMFSegmentHeader::SegmentType OMFSegmentHeader::GetSegmentType(void) const
|
|
{
|
|
assert(fReady);
|
|
|
|
if (fVersion < 2)
|
|
return (SegmentType) (fType & 0x1f);
|
|
else
|
|
return (SegmentType) (fKind & 0x1f);
|
|
}
|
|
|
|
/*
|
|
* Return the value of one of the segment header flags.
|
|
*/
|
|
bool OMFSegmentHeader::GetSegmentFlag(SegmentFlag flag) const
|
|
{
|
|
if (fVersion < 2) {
|
|
switch (flag) {
|
|
case kFlagPositionIndep:
|
|
return (fType & 0x20) != 0;
|
|
case kFlagPrivate:
|
|
return (fType & 0x40) != 0;
|
|
case kFlagDynamic:
|
|
return (fType & 0x80) != 0;
|
|
default:
|
|
return false;
|
|
}
|
|
} else {
|
|
switch (flag) {
|
|
case kFlagBankRelative:
|
|
return (fKind & 0x0100) != 0;
|
|
case kFlagSkip:
|
|
return (fKind & 0x0200) != 0;
|
|
case kFlagReload:
|
|
return (fKind & 0x0400) != 0;
|
|
case kFlagAbsoluteBank:
|
|
return (fKind & 0x0800) != 0;
|
|
case kFlagNoSpecialMem:
|
|
return (fKind & 0x1000) != 0;
|
|
case kFlagPositionIndep:
|
|
return (fKind & 0x2000) != 0;
|
|
case kFlagPrivate:
|
|
return (fKind & 0x4000) != 0;
|
|
case kFlagDynamic:
|
|
return (fKind & 0x8000) != 0;
|
|
default:
|
|
assert(false);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dump the contents of the segment header struct.
|
|
*/
|
|
void OMFSegmentHeader::Dump(void) const
|
|
{
|
|
LOGI("OMF segment header:");
|
|
LOGI(" segNum=%d loadName='%hs' segName='%hs'",
|
|
fSegNum, fLoadName, fSegName);
|
|
LOGI(" blockCnt=%ld byteCnt=%ld resSpc=%ld length=%ld",
|
|
fBlockCnt, fByteCnt, fResSpc, fLength);
|
|
LOGI(" version=%d type=0x%02x kind=0x%04x",
|
|
fVersion, fType, fKind);
|
|
LOGI(" labLen=%d numLen=%d bankSize=%ld lcBank=%d",
|
|
fLabLen, fNumLen, fBankSize, fLCBank);
|
|
LOGI(" align=%ld numSex=%d org=%ld tempOrg=%ld",
|
|
fAlign, fNumSex, fOrg, fTempOrg);
|
|
LOGI(" entry=%ld dispName=%d dispData=%d",
|
|
fEntry, fDispName, fDispData);
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* ===========================================================================
|
|
* OMFSegment
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Prepare to roll through a segment.
|
|
*/
|
|
void
|
|
OMFSegment::Setup(const OMFSegmentHeader* pSegHdr, const uint8_t* srcBuf,
|
|
long srcLen)
|
|
{
|
|
fSegBuf = fCurPtr = srcBuf + pSegHdr->GetDispData();
|
|
fSegLen = srcLen - pSegHdr->GetDispData();
|
|
|
|
fLabLen = pSegHdr->GetLabLen();
|
|
fNumLen = pSegHdr->GetNumLen();
|
|
}
|
|
|
|
/*
|
|
* Process the next chunk from the segment.
|
|
*
|
|
* Returns a pointer to the start of the chunk, or "NULL" if we've encountered
|
|
* some bogus condition (e.g. running off the end).
|
|
*/
|
|
const uint8_t*
|
|
OMFSegment::ProcessNextChunk(void)
|
|
{
|
|
const uint8_t* prevPtr = fCurPtr;
|
|
long remLen = fSegLen - (fCurPtr - fSegBuf);
|
|
uint32_t subLen;
|
|
int len = 1; // one byte at least (for the opcode)
|
|
|
|
assert(fLabLen >= 0);
|
|
assert(fNumLen > 0);
|
|
|
|
switch (*fCurPtr) {
|
|
case kSegOpEND:
|
|
LOGI(" OMF END reached, remaining len = %d",
|
|
fSegLen - (fCurPtr - fSegBuf));
|
|
assert(len == 1);
|
|
break;
|
|
case kSegOpALIGN:
|
|
len += fNumLen;
|
|
break;
|
|
case kSegOpORG:
|
|
len += fNumLen;
|
|
break;
|
|
case kSegOpRELOC:
|
|
len += 10;
|
|
break;
|
|
case kSegOpINTERSEG:
|
|
len += 14;
|
|
break;
|
|
case kSegOpUSING:
|
|
case kSegOpSTRONG:
|
|
len += LabelLength(fCurPtr + 1);
|
|
break;
|
|
case kSegOpGLOBAL:
|
|
len += LabelLength(fCurPtr + 1) + 4;
|
|
break;
|
|
case kSegOpGEQU:
|
|
len += LabelLength(fCurPtr + 1) + 4;
|
|
len += ExpressionLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpMEM: // not used on IIgs?
|
|
len += fNumLen*2;
|
|
break;
|
|
case kSegOpEXPR:
|
|
case kSegOpZEXPR:
|
|
case kSegOpBEXPR:
|
|
len += 1;
|
|
len += ExpressionLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpRELEXPR:
|
|
len += 1 + fNumLen;
|
|
len += ExpressionLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpLOCAL:
|
|
len += LabelLength(fCurPtr+1) + 4;
|
|
break;
|
|
case kSegOpEQU:
|
|
len += LabelLength(fCurPtr+1) + 4;
|
|
len += ExpressionLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpDS:
|
|
len += fNumLen;
|
|
break;
|
|
case kSegOpLCONST:
|
|
subLen = Get32LE(fCurPtr+1);
|
|
len += fNumLen + subLen;
|
|
break;
|
|
case kSegOpLEXPR:
|
|
len += 1;
|
|
len += ExpressionLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpENTRY:
|
|
len += 6;
|
|
len += LabelLength(fCurPtr + len);
|
|
break;
|
|
case kSegOpcRELOC:
|
|
len += 6;
|
|
break;
|
|
case kSegOpcINTERSEG:
|
|
len += 7;
|
|
break;
|
|
case kSegOpSUPER:
|
|
subLen = Get32LE(fCurPtr+1);
|
|
len += 4 + subLen;
|
|
break;
|
|
|
|
case kSegOpGeneral:
|
|
case kSegOpExperimental1:
|
|
case kSegOpExperimental2:
|
|
case kSegOpExperimental3:
|
|
case kSegOpExperimental4:
|
|
subLen = Get32LE(fCurPtr+1); // assumes fNumLen==4
|
|
LOGI(" OMF found 'reserved' len=%lu (remLen=%ld)", subLen, remLen);
|
|
if (subLen > (uint32_t) remLen)
|
|
return NULL;
|
|
len += subLen + fNumLen;
|
|
break;
|
|
default:
|
|
assert(len == 1);
|
|
if (*fCurPtr >= kSegOpCONSTStart && *fCurPtr <= kSegOpCONSTEnd)
|
|
len += *fCurPtr;
|
|
break;
|
|
}
|
|
|
|
fCurPtr += len;
|
|
|
|
return prevPtr;
|
|
}
|
|
|
|
/*
|
|
* Determine the length of an OMF expression.
|
|
*
|
|
* Pass a pointer to the start of the expression.
|
|
*/
|
|
int
|
|
OMFSegment::ExpressionLength(const uint8_t* ptr)
|
|
{
|
|
// do this someday
|
|
return 1;
|
|
}
|
|
#endif
|