166 lines
5.7 KiB
C
166 lines
5.7 KiB
C
/*
|
|
* Debugger register handling
|
|
*
|
|
* Copyright 1995 Alexandre Julliard
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include <string.h>
|
|
#include "debugger.h"
|
|
|
|
/***********************************************************************
|
|
* DEBUG_Flags
|
|
*
|
|
* Return Flag String.
|
|
*/
|
|
char *DEBUG_Flags( DWORD flag, char *buf )
|
|
{
|
|
#ifdef __i386__
|
|
char *pt;
|
|
|
|
strcpy( buf, " - 00 - - - " );
|
|
pt = buf + strlen( buf );
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000001 ) *pt = 'C'; /* Carry Falg */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000002 ) *pt = '1';
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000004 ) *pt = 'P'; /* Parity Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000008 ) *pt = '-';
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000010 ) *pt = 'A'; /* Auxiliary Carry Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000020 ) *pt = '-';
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000040 ) *pt = 'Z'; /* Zero Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000080 ) *pt = 'S'; /* Sign Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000100 ) *pt = 'T'; /* Trap/Trace Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000200 ) *pt = 'I'; /* Interupt Enable Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000400 ) *pt = 'D'; /* Direction Indicator */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00000800 ) *pt = 'O'; /* Overflow Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00001000 ) *pt = '1'; /* I/O Privilage Level */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00002000 ) *pt = '1'; /* I/O Privilage Level */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00004000 ) *pt = 'N'; /* Nested Task Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00008000 ) *pt = '-';
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00010000 ) *pt = 'R'; /* Resume Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00020000 ) *pt = 'V'; /* Vritual Mode Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
if ( flag & 0x00040000 ) *pt = 'a'; /* Alignment Check Flag */
|
|
if ( buf >= pt-- ) return( buf );
|
|
return( buf );
|
|
#else
|
|
strcpy(buf, "unknown CPU");
|
|
return buf;
|
|
#endif
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DEBUG_InfoRegisters
|
|
*
|
|
* Display registers information.
|
|
*/
|
|
void DEBUG_InfoRegisters(void)
|
|
{
|
|
DEBUG_Printf(DBG_CHN_MESG,"Register dump:\n");
|
|
|
|
#ifdef __i386__
|
|
/* First get the segment registers out of the way */
|
|
DEBUG_Printf( DBG_CHN_MESG," CS:%04x SS:%04x DS:%04x ES:%04x FS:%04x GS:%04x",
|
|
(WORD)DEBUG_context.SegCs, (WORD)DEBUG_context.SegSs,
|
|
(WORD)DEBUG_context.SegDs, (WORD)DEBUG_context.SegEs,
|
|
(WORD)DEBUG_context.SegFs, (WORD)DEBUG_context.SegGs );
|
|
if (DEBUG_CurrThread->dbg_mode == 16)
|
|
{
|
|
char flag[33];
|
|
|
|
DEBUG_Printf( DBG_CHN_MESG,"\n IP:%04x SP:%04x BP:%04x FLAGS:%04x(%s)\n",
|
|
LOWORD(DEBUG_context.Eip), LOWORD(DEBUG_context.Esp),
|
|
LOWORD(DEBUG_context.Ebp), LOWORD(DEBUG_context.EFlags),
|
|
DEBUG_Flags(LOWORD(DEBUG_context.EFlags), flag));
|
|
DEBUG_Printf( DBG_CHN_MESG," AX:%04x BX:%04x CX:%04x DX:%04x SI:%04x DI:%04x\n",
|
|
LOWORD(DEBUG_context.Eax), LOWORD(DEBUG_context.Ebx),
|
|
LOWORD(DEBUG_context.Ecx), LOWORD(DEBUG_context.Edx),
|
|
LOWORD(DEBUG_context.Esi), LOWORD(DEBUG_context.Edi) );
|
|
}
|
|
else /* 32-bit mode */
|
|
{
|
|
char flag[33];
|
|
|
|
DEBUG_Printf( DBG_CHN_MESG, "\n EIP:%08lx ESP:%08lx EBP:%08lx EFLAGS:%08lx(%s)\n",
|
|
DEBUG_context.Eip, DEBUG_context.Esp,
|
|
DEBUG_context.Ebp, DEBUG_context.EFlags,
|
|
DEBUG_Flags(DEBUG_context.EFlags, flag));
|
|
DEBUG_Printf( DBG_CHN_MESG, " EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n",
|
|
DEBUG_context.Eax, DEBUG_context.Ebx,
|
|
DEBUG_context.Ecx, DEBUG_context.Edx );
|
|
DEBUG_Printf( DBG_CHN_MESG, " ESI:%08lx EDI:%08lx\n",
|
|
DEBUG_context.Esi, DEBUG_context.Edi );
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DEBUG_ValidateRegisters
|
|
*
|
|
* Make sure all registers have a correct value for returning from
|
|
* the signal handler.
|
|
*/
|
|
BOOL DEBUG_ValidateRegisters(void)
|
|
{
|
|
#ifdef __i386__
|
|
if (DEBUG_context.EFlags & V86_FLAG) return TRUE;
|
|
|
|
#if 0
|
|
/* Check that a selector is a valid ring-3 LDT selector, or a NULL selector */
|
|
#define CHECK_SEG(seg,name) \
|
|
if (((seg) & ~3) && ((((seg) & 7) != 7) || !DEBUG_IsSelector(seg))) { \
|
|
DEBUG_Printf( DBG_CHN_MESG, "*** Invalid value for %s register: %04x\n", \
|
|
(name), (WORD)(seg) ); \
|
|
return FALSE; \
|
|
}
|
|
|
|
cs = __get_cs();
|
|
ds = __get_ds();
|
|
if (CS_reg(DEBUG_context) != cs) CHECK_SEG(CS_reg(DEBUG_context), "CS");
|
|
if (SS_reg(DEBUG_context) != ds) CHECK_SEG(SS_reg(DEBUG_context), "SS");
|
|
if (DS_reg(DEBUG_context) != ds) CHECK_SEG(DS_reg(DEBUG_context), "DS");
|
|
if (ES_reg(DEBUG_context) != ds) CHECK_SEG(ES_reg(DEBUG_context), "ES");
|
|
if (FS_reg(DEBUG_context) != ds) CHECK_SEG(FS_reg(DEBUG_context), "FS");
|
|
if (GS_reg(DEBUG_context) != ds) CHECK_SEG(GS_reg(DEBUG_context), "GS");
|
|
#endif
|
|
|
|
/* Check that CS and SS are not NULL */
|
|
|
|
if (!(DEBUG_context.SegCs & ~3))
|
|
{
|
|
DEBUG_Printf( DBG_CHN_MESG, "*** Invalid value for CS register: %04x\n",
|
|
(WORD)DEBUG_context.SegCs );
|
|
return FALSE;
|
|
}
|
|
if (!(DEBUG_context.SegSs & ~3))
|
|
{
|
|
DEBUG_Printf( DBG_CHN_MESG, "*** Invalid value for SS register: %04x\n",
|
|
(WORD)DEBUG_context.SegSs );
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
#undef CHECK_SEG
|
|
#else
|
|
return TRUE;
|
|
#endif
|
|
}
|