| /* |
| * Debugger register handling |
| * |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include <stdio.h> |
| #include "debugger.h" |
| |
| CONTEXT DEBUG_context; |
| |
| /*********************************************************************** |
| * DEBUG_SetRegister |
| * |
| * Set a register value. |
| */ |
| void DEBUG_SetRegister( enum debug_regs reg, int val ) |
| { |
| 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_AX: AX_reg(&DEBUG_context) = val; break; |
| case REG_BX: BX_reg(&DEBUG_context) = val; break; |
| case REG_CX: CX_reg(&DEBUG_context) = val; break; |
| case REG_DX: DX_reg(&DEBUG_context) = val; break; |
| case REG_SI: SI_reg(&DEBUG_context) = val; break; |
| case REG_DI: DI_reg(&DEBUG_context) = val; break; |
| case REG_BP: BP_reg(&DEBUG_context) = val; break; |
| case REG_FL: FL_reg(&DEBUG_context) = val; break; |
| case REG_IP: IP_reg(&DEBUG_context) = val; break; |
| case REG_SP: SP_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; |
| } |
| } |
| |
| |
| int |
| DEBUG_PrintRegister(enum debug_regs reg) |
| { |
| 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; |
| } |
| |
| /*********************************************************************** |
| * DEBUG_GetRegister |
| * |
| * Get a register value. |
| */ |
| int DEBUG_GetRegister( enum debug_regs reg ) |
| { |
| 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_AX: return AX_reg(&DEBUG_context); |
| case REG_BX: return BX_reg(&DEBUG_context); |
| case REG_CX: return CX_reg(&DEBUG_context); |
| case REG_DX: return DX_reg(&DEBUG_context); |
| case REG_SI: return SI_reg(&DEBUG_context); |
| case REG_DI: return DI_reg(&DEBUG_context); |
| case REG_BP: return BP_reg(&DEBUG_context); |
| case REG_FL: return FL_reg(&DEBUG_context); |
| case REG_IP: return IP_reg(&DEBUG_context); |
| case REG_SP: return SP_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); |
| } |
| return 0; /* should not happen */ |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_SetSigContext |
| * |
| * Set the register values from a sigcontext. |
| */ |
| void DEBUG_SetSigContext( const SIGCONTEXT *sigcontext ) |
| { |
| EAX_reg(&DEBUG_context) = EAX_sig(sigcontext); |
| EBX_reg(&DEBUG_context) = EBX_sig(sigcontext); |
| ECX_reg(&DEBUG_context) = ECX_sig(sigcontext); |
| EDX_reg(&DEBUG_context) = EDX_sig(sigcontext); |
| ESI_reg(&DEBUG_context) = ESI_sig(sigcontext); |
| EDI_reg(&DEBUG_context) = EDI_sig(sigcontext); |
| EBP_reg(&DEBUG_context) = EBP_sig(sigcontext); |
| EFL_reg(&DEBUG_context) = EFL_sig(sigcontext); |
| EIP_reg(&DEBUG_context) = EIP_sig(sigcontext); |
| ESP_reg(&DEBUG_context) = ESP_sig(sigcontext); |
| CS_reg(&DEBUG_context) = LOWORD(CS_sig(sigcontext)); |
| DS_reg(&DEBUG_context) = LOWORD(DS_sig(sigcontext)); |
| ES_reg(&DEBUG_context) = LOWORD(ES_sig(sigcontext)); |
| SS_reg(&DEBUG_context) = LOWORD(SS_sig(sigcontext)); |
| #ifdef FS_sig |
| FS_reg(&DEBUG_context) = LOWORD(FS_sig(sigcontext)); |
| #else |
| __asm__("movw %%fs,%w0":"=r" (FS_reg(&DEBUG_context))); |
| FS_reg(&DEBUG_context) &= 0xffff; |
| #endif |
| #ifdef GS_sig |
| GS_reg(&DEBUG_context) = LOWORD(GS_sig(sigcontext)); |
| #else |
| __asm__("movw %%gs,%w0":"=r" (GS_reg(&DEBUG_context))); |
| GS_reg(&DEBUG_context) &= 0xffff; |
| #endif |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_GetSigContext |
| * |
| * Build a sigcontext from the register values. |
| */ |
| void DEBUG_GetSigContext( SIGCONTEXT *sigcontext ) |
| { |
| EAX_sig(sigcontext) = EAX_reg(&DEBUG_context); |
| EBX_sig(sigcontext) = EBX_reg(&DEBUG_context); |
| ECX_sig(sigcontext) = ECX_reg(&DEBUG_context); |
| EDX_sig(sigcontext) = EDX_reg(&DEBUG_context); |
| ESI_sig(sigcontext) = ESI_reg(&DEBUG_context); |
| EDI_sig(sigcontext) = EDI_reg(&DEBUG_context); |
| EBP_sig(sigcontext) = EBP_reg(&DEBUG_context); |
| EFL_sig(sigcontext) = EFL_reg(&DEBUG_context); |
| EIP_sig(sigcontext) = EIP_reg(&DEBUG_context); |
| ESP_sig(sigcontext) = ESP_reg(&DEBUG_context); |
| CS_sig(sigcontext) = CS_reg(&DEBUG_context); |
| DS_sig(sigcontext) = DS_reg(&DEBUG_context); |
| ES_sig(sigcontext) = ES_reg(&DEBUG_context); |
| SS_sig(sigcontext) = SS_reg(&DEBUG_context); |
| #ifdef FS_sig |
| FS_sig(sigcontext) = FS_reg(&DEBUG_context); |
| #else |
| __asm__("movw %w0,%%fs"::"r" (FS_reg(&DEBUG_context))); |
| #endif |
| #ifdef GS_sig |
| GS_sig(sigcontext) = GS_reg(&DEBUG_context); |
| #else |
| __asm__("movw %w0,%%gs"::"r" (GS_reg(&DEBUG_context))); |
| #endif |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_InfoRegisters |
| * |
| * Display registers information. |
| */ |
| void DEBUG_InfoRegisters(void) |
| { |
| fprintf(stderr,"Register dump:\n"); |
| |
| /* 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) |
| { |
| fprintf( stderr,"\n IP:%04x SP:%04x BP:%04x FLAGS:%04x\n", |
| IP_reg(&DEBUG_context), SP_reg(&DEBUG_context), |
| BP_reg(&DEBUG_context), FL_reg(&DEBUG_context) ); |
| 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 */ |
| { |
| fprintf( stderr, "\n EIP:%08lx ESP:%08lx EBP:%08lx EFLAGS:%08lx\n", |
| EIP_reg(&DEBUG_context), ESP_reg(&DEBUG_context), |
| EBP_reg(&DEBUG_context), EFL_reg(&DEBUG_context) ); |
| 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) ); |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_ValidateRegisters |
| * |
| * Make sure all registers have a correct value for returning from |
| * the signal handler. |
| */ |
| BOOL32 DEBUG_ValidateRegisters(void) |
| { |
| /* 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; \ |
| } |
| |
| if (CS_reg(&DEBUG_context) != WINE_CODE_SELECTOR) |
| CHECK_SEG( CS_reg(&DEBUG_context), "CS" ); |
| if (SS_reg(&DEBUG_context) != WINE_DATA_SELECTOR) |
| CHECK_SEG( SS_reg(&DEBUG_context), "SS" ); |
| if (DS_reg(&DEBUG_context) != WINE_DATA_SELECTOR) |
| CHECK_SEG( DS_reg(&DEBUG_context), "DS" ); |
| if (ES_reg(&DEBUG_context) != WINE_DATA_SELECTOR) |
| CHECK_SEG( ES_reg(&DEBUG_context), "ES" ); |
| if (FS_reg(&DEBUG_context) != WINE_DATA_SELECTOR) |
| CHECK_SEG( FS_reg(&DEBUG_context), "FS" ); |
| if (GS_reg(&DEBUG_context) != WINE_DATA_SELECTOR) |
| CHECK_SEG( GS_reg(&DEBUG_context), "GS" ); |
| |
| /* Check that CS and SS are not NULL */ |
| |
| 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 |
| } |
