ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Sweden-Number/debugger/registers.c

287 lines
10 KiB
C
Raw Blame History

/*
* Debugger register handling
*
* Copyright 1995 Alexandre Julliard
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include "debugger.h"
/***********************************************************************
* DEBUG_SetRegister
*
* Set a register value.
*/
void DEBUG_SetRegister( enum debug_regs reg, int val )
{
#ifdef __i386__
switch(reg)
{
case REG_EAX: DEBUG_context.Eax = val; break;
case REG_EBX: DEBUG_context.Ebx = val; break;
case REG_ECX: DEBUG_context.Ecx = val; break;
case REG_EDX: DEBUG_context.Edx = val; break;
case REG_ESI: DEBUG_context.Esi = val; break;
case REG_EDI: DEBUG_context.Edi = val; break;
case REG_EBP: DEBUG_context.Ebp = val; break;
case REG_EFL: DEBUG_context.EFlags = val; break;
case REG_EIP: DEBUG_context.Eip = val; break;
case REG_ESP: DEBUG_context.Esp = val; break;
case REG_CS: DEBUG_context.SegCs = val; break;
case REG_DS: DEBUG_context.SegDs = val; break;
case REG_ES: DEBUG_context.SegEs = val; break;
case REG_SS: DEBUG_context.SegSs = val; break;
case REG_FS: DEBUG_context.SegFs = val; break;
case REG_GS: DEBUG_context.SegGs = val; break;
#define SET_LOW_WORD(dw,lw) ((dw) = ((dw) & 0xFFFF0000) | LOWORD(lw))
case REG_AX: SET_LOW_WORD(DEBUG_context.Eax,val); break;
case REG_BX: SET_LOW_WORD(DEBUG_context.Ebx,val); break;
case REG_CX: SET_LOW_WORD(DEBUG_context.Ecx,val); break;
case REG_DX: SET_LOW_WORD(DEBUG_context.Edx,val); break;
case REG_SI: SET_LOW_WORD(DEBUG_context.Esi,val); break;
case REG_DI: SET_LOW_WORD(DEBUG_context.Edi,val); break;
case REG_BP: SET_LOW_WORD(DEBUG_context.Ebp,val); break;
case REG_FL: SET_LOW_WORD(DEBUG_context.EFlags,val); break;
case REG_IP: SET_LOW_WORD(DEBUG_context.Eip,val); break;
case REG_SP: SET_LOW_WORD(DEBUG_context.Esp,val); break;
#undef SET_LOWORD
}
#endif
}
int DEBUG_PrintRegister(enum debug_regs reg)
{
#ifdef __i386__
char* val = NULL;
switch(reg)
{
case REG_EAX: val = "%%eax"; break;
case REG_EBX: val = "%%ebx"; break;
case REG_ECX: val = "%%ecx"; break;
case REG_EDX: val = "%%edx"; break;
case REG_ESI: val = "%%esi"; break;
case REG_EDI: val = "%%edi"; break;
case REG_EBP: val = "%%ebp"; break;
case REG_EFL: val = "%%efl"; break;
case REG_EIP: val = "%%eip"; break;
case REG_ESP: val = "%%esp"; break;
case REG_AX: val = "%%ax"; break;
case REG_BX: val = "%%bx"; break;
case REG_CX: val = "%%cx"; break;
case REG_DX: val = "%%dx"; break;
case REG_SI: val = "%%si"; break;
case REG_DI: val = "%%di"; break;
case REG_BP: val = "%%bp"; break;
case REG_FL: val = "%%fl"; break;
case REG_IP: val = "%%ip"; break;
case REG_SP: val = "%%sp"; break;
case REG_CS: val = "%%cs"; break;
case REG_DS: val = "%%ds"; break;
case REG_ES: val = "%%es"; break;
case REG_SS: val = "%%ss"; break;
case REG_FS: val = "%%fs"; break;
case REG_GS: val = "%%gs"; break;
}
if (val) fprintf(stderr, val);
return TRUE;
#else
return FALSE;
#endif
}
/***********************************************************************
* DEBUG_GetRegister
*
* Get a register value.
*/
int DEBUG_GetRegister( enum debug_regs reg )
{
#ifdef __i386__
switch(reg)
{
case REG_EAX: return DEBUG_context.Eax;
case REG_EBX: return DEBUG_context.Ebx;
case REG_ECX: return DEBUG_context.Ecx;
case REG_EDX: return DEBUG_context.Edx;
case REG_ESI: return DEBUG_context.Esi;
case REG_EDI: return DEBUG_context.Edi;
case REG_EBP: return DEBUG_context.Ebp;
case REG_EFL: return DEBUG_context.EFlags;
case REG_EIP: return DEBUG_context.Eip;
case REG_ESP: return DEBUG_context.Esp;
case REG_CS: return DEBUG_context.SegCs;
case REG_DS: return DEBUG_context.SegDs;
case REG_ES: return DEBUG_context.SegEs;
case REG_SS: return DEBUG_context.SegSs;
case REG_FS: return DEBUG_context.SegFs;
case REG_GS: return DEBUG_context.SegGs;
case REG_AX: return LOWORD(DEBUG_context.Eax);
case REG_BX: return LOWORD(DEBUG_context.Ebx);
case REG_CX: return LOWORD(DEBUG_context.Ecx);
case REG_DX: return LOWORD(DEBUG_context.Edx);
case REG_SI: return LOWORD(DEBUG_context.Esi);
case REG_DI: return LOWORD(DEBUG_context.Edi);
case REG_BP: return LOWORD(DEBUG_context.Ebp);
case REG_FL: return LOWORD(DEBUG_context.EFlags);
case REG_IP: return LOWORD(DEBUG_context.Eip);
case REG_SP: return LOWORD(DEBUG_context.Esp);
}
#endif
return 0; /* should not happen */
}
/***********************************************************************
* DEBUG_Flags
*
* Return Flag String.
*/
char *DEBUG_Flags( DWORD flag, char *buf )
{
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 );
}
/***********************************************************************
* DEBUG_InfoRegisters
*
* Display registers information.
*/
void DEBUG_InfoRegisters(void)
{
fprintf(stderr,"Register dump:\n");
#ifdef __i386__
/* First get the segment registers out of the way */
fprintf( stderr," 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];
fprintf( stderr,"\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));
fprintf( stderr," 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];
fprintf( stderr, "\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));
fprintf( stderr, " EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n",
DEBUG_context.Eax, DEBUG_context.Ebx,
DEBUG_context.Ecx, DEBUG_context.Edx );
fprintf( stderr, " 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))) { \
fprintf( stderr, "*** 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))
{
fprintf( stderr, "*** Invalid value for CS register: %04x\n",
(WORD)DEBUG_context.SegCs );
return FALSE;
}
if (!(DEBUG_context.SegSs & ~3))
{
fprintf( stderr, "*** Invalid value for SS register: %04x\n",
(WORD)DEBUG_context.SegSs );
return FALSE;
}
return TRUE;
#undef CHECK_SEG
#else
return TRUE;
#endif
}
Reference in New Issue View Git Blame Copy Permalink