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Debugger: fixes to wrap 16-bit addr (was resulting in AppleWin debugger crashes)

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This commit is contained in:
tomcw 2021-02-07 16:58:11 +00:00
parent c492004e8d
commit f3b6b8665f
2 changed files with 4 additions and 4 deletions
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4
source/Debugger/Debugger_Assembler.cpp
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@ -705,13 +705,13 @@ bool _6502_GetTargets ( WORD nAddress, int *pTargetPartial_, int *pTargetPartial
*pTargetPartial_ = nTarget16;
*pTargetPartial2_ = nTarget16+1;
if (bIncludeNextOpcodeAddress)
*pTargetPointer_ = *(LPWORD)(mem + nTarget16);
*pTargetPointer_ = mem[nTarget16] | (mem[(nTarget16+1)&0xFFFF]<<8);
if (pTargetBytes_)
*pTargetBytes_ = 2;
break;
case AM_IZX: // Indexed (Zeropage Indirect, X)
nTarget8 += regs.x;
nTarget8 = (nTarget8 + regs.x) & 0xFF;
*pTargetPartial_ = nTarget8;
*pTargetPointer_ = *(LPWORD)(mem + nTarget8);
if (pTargetBytes_)

4
source/Debugger/Debugger_Display.cpp
View File

@ -1502,7 +1502,7 @@ int GetDisassemblyLine ( WORD nBaseAddress, DisasmLine_t & line_ )
{
nTarget = pData->nTargetAddress;
} else {
nTarget = *(LPWORD)(mem+nBaseAddress+1);
nTarget = mem[(nBaseAddress+1)&0xFFFF] | (mem[(nBaseAddress+2)&0xFFFF]<<8);
if (nOpbyte == 2)
nTarget &= 0xFF;
}
@ -1742,7 +1742,7 @@ void FormatOpcodeBytes ( WORD nBaseAddress, DisasmLine_t & line_ )
for( int iByte = 0; iByte < nMaxOpBytes; iByte++ )
{
BYTE nMem = (unsigned)*(mem+nBaseAddress + iByte);
BYTE nMem = mem[(nBaseAddress+iByte)&0xFFFF];
sprintf( pDst, "%02X", nMem ); // sBytes+strlen(sBytes)
pDst += 2;