| /* |
| * 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 |
| } |
