| /* |
| * Debugger register handling |
| * |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include "config.h" |
| #include <stdio.h> |
| #include <string.h> |
| #include "selectors.h" |
| #include "debugger.h" |
| |
| CONTEXT DEBUG_context; |
| |
| /*********************************************************************** |
| * DEBUG_SetRegister |
| * |
| * Set a register value. |
| */ |
| void DEBUG_SetRegister( enum debug_regs reg, int val ) |
| { |
| #ifdef __i386__ |
| switch(reg) |
| { |
| case REG_EAX: EAX_reg(&DEBUG_context) = val; break; |
| case REG_EBX: EBX_reg(&DEBUG_context) = val; break; |
| case REG_ECX: ECX_reg(&DEBUG_context) = val; break; |
| case REG_EDX: EDX_reg(&DEBUG_context) = val; break; |
| case REG_ESI: ESI_reg(&DEBUG_context) = val; break; |
| case REG_EDI: EDI_reg(&DEBUG_context) = val; break; |
| case REG_EBP: EBP_reg(&DEBUG_context) = val; break; |
| case REG_EFL: EFL_reg(&DEBUG_context) = val; break; |
| case REG_EIP: EIP_reg(&DEBUG_context) = val; break; |
| case REG_ESP: ESP_reg(&DEBUG_context) = val; break; |
| case REG_CS: CS_reg(&DEBUG_context) = val; break; |
| case REG_DS: DS_reg(&DEBUG_context) = val; break; |
| case REG_ES: ES_reg(&DEBUG_context) = val; break; |
| case REG_SS: SS_reg(&DEBUG_context) = val; break; |
| case REG_FS: FS_reg(&DEBUG_context) = val; break; |
| case REG_GS: GS_reg(&DEBUG_context) = val; break; |
| case REG_AX: SET_LOWORD(EAX_reg(&DEBUG_context),val); break; |
| case REG_BX: SET_LOWORD(EBX_reg(&DEBUG_context),val); break; |
| case REG_CX: SET_LOWORD(ECX_reg(&DEBUG_context),val); break; |
| case REG_DX: SET_LOWORD(EDX_reg(&DEBUG_context),val); break; |
| case REG_SI: SET_LOWORD(ESI_reg(&DEBUG_context),val); break; |
| case REG_DI: SET_LOWORD(EDI_reg(&DEBUG_context),val); break; |
| case REG_BP: SET_LOWORD(EBP_reg(&DEBUG_context),val); break; |
| case REG_FL: SET_LOWORD(EFL_reg(&DEBUG_context),val); break; |
| case REG_IP: SET_LOWORD(EIP_reg(&DEBUG_context),val); break; |
| case REG_SP: SET_LOWORD(ESP_reg(&DEBUG_context),val); break; |
| } |
| #endif |
| } |
| |
| |
| int |
| DEBUG_PrintRegister(enum debug_regs reg) |
| { |
| #ifdef __i386__ |
| switch(reg) |
| { |
| case REG_EAX: fprintf(stderr, "%%eax"); break; |
| case REG_EBX: fprintf(stderr, "%%ebx"); break; |
| case REG_ECX: fprintf(stderr, "%%ecx"); break; |
| case REG_EDX: fprintf(stderr, "%%edx"); break; |
| case REG_ESI: fprintf(stderr, "%%esi"); break; |
| case REG_EDI: fprintf(stderr, "%%edi"); break; |
| case REG_EBP: fprintf(stderr, "%%ebp"); break; |
| case REG_EFL: fprintf(stderr, "%%efl"); break; |
| case REG_EIP: fprintf(stderr, "%%eip"); break; |
| case REG_ESP: fprintf(stderr, "%%esp"); break; |
| case REG_AX: fprintf(stderr, "%%ax"); break; |
| case REG_BX: fprintf(stderr, "%%bx"); break; |
| case REG_CX: fprintf(stderr, "%%cx"); break; |
| case REG_DX: fprintf(stderr, "%%dx"); break; |
| case REG_SI: fprintf(stderr, "%%si"); break; |
| case REG_DI: fprintf(stderr, "%%di"); break; |
| case REG_BP: fprintf(stderr, "%%bp"); break; |
| case REG_FL: fprintf(stderr, "%%fl"); break; |
| case REG_IP: fprintf(stderr, "%%ip"); break; |
| case REG_SP: fprintf(stderr, "%%sp"); break; |
| case REG_CS: fprintf(stderr, "%%cs"); break; |
| case REG_DS: fprintf(stderr, "%%ds"); break; |
| case REG_ES: fprintf(stderr, "%%es"); break; |
| case REG_SS: fprintf(stderr, "%%ss"); break; |
| case REG_FS: fprintf(stderr, "%%fs"); break; |
| case REG_GS: fprintf(stderr, "%%gs"); break; |
| } |
| 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 EAX_reg(&DEBUG_context); |
| case REG_EBX: return EBX_reg(&DEBUG_context); |
| case REG_ECX: return ECX_reg(&DEBUG_context); |
| case REG_EDX: return EDX_reg(&DEBUG_context); |
| case REG_ESI: return ESI_reg(&DEBUG_context); |
| case REG_EDI: return EDI_reg(&DEBUG_context); |
| case REG_EBP: return EBP_reg(&DEBUG_context); |
| case REG_EFL: return EFL_reg(&DEBUG_context); |
| case REG_EIP: return EIP_reg(&DEBUG_context); |
| case REG_ESP: return ESP_reg(&DEBUG_context); |
| case REG_CS: return CS_reg(&DEBUG_context); |
| case REG_DS: return DS_reg(&DEBUG_context); |
| case REG_ES: return ES_reg(&DEBUG_context); |
| case REG_SS: return SS_reg(&DEBUG_context); |
| case REG_FS: return FS_reg(&DEBUG_context); |
| case REG_GS: return GS_reg(&DEBUG_context); |
| case REG_AX: return LOWORD(EAX_reg(&DEBUG_context)); |
| case REG_BX: return LOWORD(EBX_reg(&DEBUG_context)); |
| case REG_CX: return LOWORD(ECX_reg(&DEBUG_context)); |
| case REG_DX: return LOWORD(EDX_reg(&DEBUG_context)); |
| case REG_SI: return LOWORD(ESI_reg(&DEBUG_context)); |
| case REG_DI: return LOWORD(EDI_reg(&DEBUG_context)); |
| case REG_BP: return LOWORD(EBP_reg(&DEBUG_context)); |
| case REG_FL: return LOWORD(EFL_reg(&DEBUG_context)); |
| case REG_IP: return LOWORD(EIP_reg(&DEBUG_context)); |
| case REG_SP: return LOWORD(ESP_reg(&DEBUG_context)); |
| } |
| #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)CS_reg(&DEBUG_context), (WORD)SS_reg(&DEBUG_context), |
| (WORD)DS_reg(&DEBUG_context), (WORD)ES_reg(&DEBUG_context), |
| (WORD)FS_reg(&DEBUG_context), (WORD)GS_reg(&DEBUG_context) ); |
| if (dbg_mode == 16) |
| { |
| char flag[33]; |
| |
| fprintf( stderr,"\n IP:%04x SP:%04x BP:%04x FLAGS:%04x(%s)\n", |
| LOWORD(EIP_reg(&DEBUG_context)), LOWORD(ESP_reg(&DEBUG_context)), |
| LOWORD(EBP_reg(&DEBUG_context)), LOWORD(EFL_reg(&DEBUG_context)), |
| DEBUG_Flags(LOWORD(EFL_reg(&DEBUG_context)), flag)); |
| fprintf( stderr," AX:%04x BX:%04x CX:%04x DX:%04x SI:%04x DI:%04x\n", |
| AX_reg(&DEBUG_context), BX_reg(&DEBUG_context), |
| CX_reg(&DEBUG_context), DX_reg(&DEBUG_context), |
| SI_reg(&DEBUG_context), DI_reg(&DEBUG_context) ); |
| } |
| else /* 32-bit mode */ |
| { |
| char flag[33]; |
| |
| fprintf( stderr, "\n EIP:%08lx ESP:%08lx EBP:%08lx EFLAGS:%08lx(%s)\n", |
| EIP_reg(&DEBUG_context), ESP_reg(&DEBUG_context), |
| EBP_reg(&DEBUG_context), EFL_reg(&DEBUG_context), |
| DEBUG_Flags(EFL_reg(&DEBUG_context), flag)); |
| fprintf( stderr, " EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n", |
| EAX_reg(&DEBUG_context), EBX_reg(&DEBUG_context), |
| ECX_reg(&DEBUG_context), EDX_reg(&DEBUG_context) ); |
| fprintf( stderr, " ESI:%08lx EDI:%08lx\n", |
| ESI_reg(&DEBUG_context), EDI_reg(&DEBUG_context) ); |
| } |
| #endif |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_ValidateRegisters |
| * |
| * Make sure all registers have a correct value for returning from |
| * the signal handler. |
| */ |
| BOOL DEBUG_ValidateRegisters(void) |
| { |
| #ifdef __i386__ |
| WORD cs, ds; |
| |
| if (ISV86(&DEBUG_context)) return TRUE; |
| |
| /* 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) || IS_LDT_ENTRY_FREE(SELECTOR_TO_ENTRY(seg)))) \ |
| { \ |
| fprintf( stderr, "*** Invalid value for %s register: %04x\n", \ |
| (name), (WORD)(seg) ); \ |
| return FALSE; \ |
| } |
| |
| GET_CS(cs); |
| GET_DS(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"); |
| |
| /* Check that CS and SS are not NULL */ |
| |
| if (!ISV86(&DEBUG_context)) |
| if (!(CS_reg(&DEBUG_context) & ~3)) |
| { |
| fprintf( stderr, "*** Invalid value for CS register: %04x\n", |
| (WORD)CS_reg(&DEBUG_context) ); |
| return FALSE; |
| } |
| if (!(SS_reg(&DEBUG_context) & ~3)) |
| { |
| fprintf( stderr, "*** Invalid value for SS register: %04x\n", |
| (WORD)SS_reg(&DEBUG_context) ); |
| return FALSE; |
| } |
| return TRUE; |
| #undef CHECK_SEG |
| #else |
| return TRUE; |
| #endif |
| } |
