///////////////////////////////////////////////////////////////////////// // $Id: debug.h,v 1.15 2002-10-04 14:57:34 bdenney Exp $ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001 MandrakeSoft S.A. // // MandrakeSoft S.A. // 43, rue d'Aboukir // 75002 Paris - France // http://www.linux-mandrake.com/ // http://www.mandrakesoft.com/ // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // if including from C parser, need basic types etc #include "config.h" #include "osdep.h" #if BX_USE_LOADER #include "loader_misc.h" void bx_dbg_loader(char *path, bx_loader_misc_t *misc_ptr); #endif #if BX_DBG_ICOUNT_SIZE == 32 typedef Bit32u bx_dbg_icount_t; #elif BX_DBG_ICOUNT_SIZE == 64 typedef Bit64u bx_dbg_icount_t; #else # error "BX_DBG_ICOUNT_SIZE incorrect." #endif #define BX_DBG_NO_HANDLE 1000 extern Bit32u dbg_cpu; unsigned long crc32(unsigned char *buf, int len); #if BX_DEBUGGER // some strict C declarations needed by the parser/lexer #ifdef __cplusplus extern "C" { #endif // Flex defs extern int bxlex(void); extern char *bxtext; // Using the pointer option rather than array extern int bxwrap(void); void bx_add_lex_input(char *buf); // Yacc defs extern int bxparse(void); extern void bxerror(char *s); typedef struct { Bit64s from; Bit64s to; } bx_num_range; #define EMPTY_ARG (-1) bx_num_range make_num_range (Bit64s from, Bit64s to); char* bx_dbg_symbolic_address(Bit32u context, Bit32u eip, Bit32u base); void bx_dbg_symbol_command(char* filename, Boolean global, Bit32u offset); void bx_dbg_trace_on_command(void); void bx_dbg_trace_off_command(void); void bx_dbg_trace_reg_on_command(void); void bx_dbg_trace_reg_off_command(void); void bx_dbg_ptime_command(void); void bx_dbg_timebp_command(Boolean absolute, Bit64u time); void bx_dbg_diff_memory(void); void bx_dbg_always_check(Bit32u page_start, Boolean on); void bx_dbg_sync_memory(Boolean set); void bx_dbg_sync_cpu(Boolean set); void bx_dbg_fast_forward(Bit32u num); void bx_dbg_info_address(Bit32u seg_reg_num, Bit32u offset); #define MAX_CONCURRENT_BPS 5 extern int timebp_timer; extern Bit64u timebp_queue[MAX_CONCURRENT_BPS]; extern int timebp_queue_size; void bx_dbg_record_command(char*); void bx_dbg_playback_command(char*); void bx_dbg_modebp_command(char*); /* BW */ void bx_dbg_where_command(void); void bx_dbg_print_string_command(Bit32u addr); void bx_dbg_show_command(char*); /* BW */ void enter_playback_entry(); void bx_dbg_print_stack_command(int nwords); void bx_dbg_watch(int read, Bit32u address); void bx_dbg_unwatch(int read, Bit32u address); void bx_dbg_continue_command(void); void bx_dbg_stepN_command(bx_dbg_icount_t count); void bx_dbg_set_command(char *p1, char *p2, char *p3); void bx_dbg_del_breakpoint_command(unsigned handle); void bx_dbg_vbreakpoint_command(Boolean specific, Bit32u cs, Bit32u eip); void bx_dbg_lbreakpoint_command(Boolean specific, Bit32u laddress); void bx_dbg_pbreakpoint_command(Boolean specific, Bit32u paddress); void bx_dbg_info_bpoints_command(void); void bx_dbg_quit_command(void); void bx_dbg_info_program_command(void); #define BX_INFO_CPU_REGS 1 /* choices for bx_dbg_info_registers_command */ #define BX_INFO_FPU_REGS 2 void bx_dbg_info_registers_command(int); void bx_dbg_info_dirty_command(void); void bx_dbg_info_idt_command(bx_num_range); void bx_dbg_info_gdt_command(bx_num_range); void bx_dbg_info_ldt_command(bx_num_range); void bx_dbg_info_tss_command(bx_num_range); void bx_dbg_info_control_regs_command(void); void bx_dbg_info_linux_command(void); void bx_dbg_examine_command(char *command, char *format, Boolean format_passed, Bit32u addr, Boolean addr_passed, int simulator); void bx_dbg_setpmem_command(Bit32u addr, unsigned len, Bit32u val); void bx_dbg_set_symbol_command(char *symbol, Bit32u val); void bx_dbg_query_command(char *); void bx_dbg_take_command(char *, unsigned n); void bx_dbg_dump_cpu_command(void); void bx_dbg_set_cpu_command(void); void bx_dbg_disassemble_command(bx_num_range); void bx_dbg_instrument_command(char *); void bx_dbg_loader_command(char *); void bx_dbg_doit_command(unsigned); void bx_dbg_crc_command(Bit32u addr1, Bit32u addr2); void bx_dbg_maths_command(char *command, int data1, int data2); void bx_dbg_maths_expression_command(char *expr); void bx_dbg_v2l_command(unsigned seg_no, Bit32u offset); extern Boolean watchpoint_continue; void bx_dbg_linux_syscall (); void bx_dbg_info_ne2k(int page, int reg); void bx_dbg_help_command(char* command); #ifdef __cplusplus } #endif // the rest for C++ #ifdef __cplusplus // (mch) Read/write watchpoint hack #define MAX_WRITE_WATCHPOINTS 16 #define MAX_READ_WATCHPOINTS 16 extern int num_write_watchpoints; extern Bit32u write_watchpoint[MAX_WRITE_WATCHPOINTS]; extern int num_read_watchpoints; extern Bit32u read_watchpoint[MAX_READ_WATCHPOINTS]; typedef enum { STOP_NO_REASON = 0, STOP_TIME_BREAK_POINT, STOP_READ_WATCH_POINT, STOP_WRITE_WATCH_POINT, STOP_MAGIC_BREAK_POINT, UNUSED_STOP_TRACE, STOP_MODE_BREAK_POINT, STOP_CPU_HALTED } stop_reason_t; typedef enum { BREAK_POINT_MAGIC, BREAK_POINT_READ, BREAK_POINT_WRITE, BREAK_POINT_TIME } break_point_t; #define BX_DBG_REG_EAX 10 #define BX_DBG_REG_ECX 11 #define BX_DBG_REG_EDX 12 #define BX_DBG_REG_EBX 13 #define BX_DBG_REG_ESP 14 #define BX_DBG_REG_EBP 15 #define BX_DBG_REG_ESI 16 #define BX_DBG_REG_EDI 17 #define BX_DBG_REG_EIP 18 #define BX_DBG_REG_EFLAGS 19 #define BX_DBG_REG_CS 20 #define BX_DBG_REG_SS 21 #define BX_DBG_REG_DS 22 #define BX_DBG_REG_ES 23 #define BX_DBG_REG_FS 24 #define BX_DBG_REG_GS 25 #define BX_DBG_PENDING_DMA 1 #define BX_DBG_PENDING_IRQ 2 void bx_debug_break (); void bx_dbg_exit(int code); #if BX_DBG_EXTENSIONS int bx_dbg_extensions(char *command); #else #define bx_dbg_extensions(command) 0 #endif void dbg_printf (const char *fmt, ...); // // code for guards... // #define BX_DBG_GUARD_INSTR_BEGIN 0x0001 #define BX_DBG_GUARD_INSTR_END 0x0002 #define BX_DBG_GUARD_EXCEP_BEGIN 0x0004 #define BX_DBG_GUARD_EXCEP_END 0x0008 #define BX_DBG_GUARD_INTER_BEGIN 0x0010 #define BX_DBG_GUARD_INTER_END 0x0020 #define BX_DBG_GUARD_INSTR_MAP 0x0040 // following 3 go along with BX_DBG_GUARD_INSTR_BEGIN // to provide breakpointing #define BX_DBG_GUARD_IADDR_VIR 0x0080 #define BX_DBG_GUARD_IADDR_LIN 0x0100 #define BX_DBG_GUARD_IADDR_PHY 0x0200 #define BX_DBG_GUARD_IADDR_ALL (BX_DBG_GUARD_IADDR_VIR | \ BX_DBG_GUARD_IADDR_LIN | \ BX_DBG_GUARD_IADDR_PHY) #define BX_DBG_GUARD_ICOUNT 0x0400 #define BX_DBG_GUARD_CTRL_C 0x0800 typedef struct { unsigned long guard_for; // instruction address breakpoints struct { #if BX_DBG_SUPPORT_VIR_BPOINT unsigned num_virtual; struct { Bit32u cs; // only use 16 bits Bit32u eip; unsigned bpoint_id; } vir[BX_DBG_MAX_VIR_BPOINTS]; #endif #if BX_DBG_SUPPORT_LIN_BPOINT unsigned num_linear; struct { Bit32u addr; unsigned bpoint_id; } lin[BX_DBG_MAX_LIN_BPOINTS]; #endif #if BX_DBG_SUPPORT_PHY_BPOINT unsigned num_physical; struct { Bit32u addr; unsigned bpoint_id; } phy[BX_DBG_MAX_PHY_BPOINTS]; #endif } iaddr; bx_dbg_icount_t icount; // stop after completing this many instructions // user typed Ctrl-C, requesting simulator stop at next convient spot volatile Boolean interrupt_requested; // when a triple fault occurs, Bochs panics. If you continue through // the panic, it will generally produce another exception and panic // again at an even deeper stack level. To recover from this potentially // infinite recursion, I set special_unwind_stack to true. This causes // the interrupt() and exception() functions to return immediately instead // of creating more exception conditions, and allows the user to reenter the // debugger after the triple fault. Note that special_unwind_stack causes // bochs to NOT emulate the hardware behavior correctly. The correct // behavior would be to reboot. (Rebooting, if it is ever implemented, // will need some kind of unwinding too.) Boolean special_unwind_stack; // booleans to control whether simulator should report events // to debug controller struct { Boolean irq; Boolean a20; Boolean io; Boolean ucmem; Boolean dma; } report; struct { Boolean irq; // should process IRQs asynchronously Boolean dma; // should process DMAs asynchronously } async; #define BX_DBG_ASYNC_PENDING_A20 0x01 #define BX_DBG_ASYNC_PENDING_RESET 0x02 #define BX_DBG_ASYNC_PENDING_NMI 0x04 // Asynchronous changes which are pending. These are Q'd by // the debugger, as the master simulator is notified of a pending // async change. At the simulator's next point, where it checks for // such events, it notifies the debugger with acknowlegement. This // field contains a logically or'd list of all events which should // be checked, and ack'd. struct { unsigned which; // logical OR of above constants Boolean a20; Boolean reset; Boolean nmi; } async_changes_pending; } bx_guard_t; // working information for each simulator to update when a guard // is reached (found) typedef struct bx_guard_found_t { unsigned long guard_found; unsigned iaddr_index; bx_dbg_icount_t icount; // number of completed instructions Bit32u cs; // cs:eip and linear addr of instruction at guard point Bit32u eip; Bit32u laddr; Boolean is_32bit_code; // CS seg size at guard point Boolean ctrl_c; // simulator stopped due to Ctrl-C request } bx_guard_found_t; extern bx_guard_t bx_guard; int bx_dbg_main(int argc, char *argv[]); void bx_dbg_user_input_loop(void); void bx_dbg_interpret_line (char *cmd); typedef struct { Bit16u sel; Bit32u des_l, des_h, valid; } bx_dbg_sreg_t; typedef struct { Bit32u eax; Bit32u ebx; Bit32u ecx; Bit32u edx; Bit32u ebp; Bit32u esi; Bit32u edi; Bit32u esp; Bit32u eflags; Bit32u eip; bx_dbg_sreg_t cs; bx_dbg_sreg_t ss; bx_dbg_sreg_t ds; bx_dbg_sreg_t es; bx_dbg_sreg_t fs; bx_dbg_sreg_t gs; bx_dbg_sreg_t ldtr; bx_dbg_sreg_t tr; struct { Bit32u base, limit; } gdtr; struct { Bit32u base, limit; } idtr; Bit32u dr0, dr1, dr2, dr3, dr6, dr7; Bit32u tr3, tr4, tr5, tr6, tr7; Bit32u cr0, cr1, cr2, cr3, cr4; unsigned inhibit_mask; } bx_dbg_cpu_t; typedef struct { // call back functions specific to each simulator Boolean (*setphymem)(Bit32u addr, unsigned len, Bit8u *buf); Boolean (*getphymem)(Bit32u addr, unsigned len, Bit8u *buf); void (*xlate_linear2phy)(Bit32u linear, Bit32u *phy, Boolean *valid); Boolean (*set_reg)(unsigned reg, Bit32u val); Bit32u (*get_reg)(unsigned reg); Boolean (*get_sreg)(bx_dbg_sreg_t *sreg, unsigned sreg_no); Boolean (*set_cpu)(bx_dbg_cpu_t *cpu); Boolean (*get_cpu)(bx_dbg_cpu_t *cpu); unsigned dirty_page_tbl_size; unsigned char *dirty_page_tbl; void (*atexit)(void); unsigned (*query_pending)(void); void (*execute)(void); void (*take_irq)(void); void (*take_dma)(void); void (*reset_cpu)(unsigned source); void (*init_mem)(int size_in_bytes); void (*load_ROM)(const char *path, Bit32u romaddress); // for asynchronous environment handling void (*set_A20)(unsigned val); void (*set_NMI)(unsigned val); void (*set_RESET)(unsigned val); void (*set_INTR)(unsigned val); void (*force_interrupt)(unsigned vector); #if BX_INSTRUMENTATION void (*instr_start)(void); void (*instr_stop)(void); void (*instr_reset)(void); void (*instr_print)(void); #endif #if BX_USE_LOADER void (*loader)(char *path, bx_loader_misc_t *misc_ptr); #endif Boolean (*crc32)(unsigned long (*f)(unsigned char *buf, int len), Bit32u addr1, Bit32u addr2, Bit32u *crc); } bx_dbg_callback_t; extern bx_dbg_callback_t bx_dbg_callback[BX_NUM_SIMULATORS]; void BX_SIM1_INIT(bx_dbg_callback_t *, int argc, char *argv[]); #ifdef BX_SIM2_INIT void BX_SIM2_INIT(bx_dbg_callback_t *, int argc, char *argv[]); #endif void bx_dbg_dma_report(Bit32u addr, unsigned len, unsigned what, Bit32u val); void bx_dbg_iac_report(unsigned vector, unsigned irq); void bx_dbg_a20_report(unsigned val); void bx_dbg_io_report(Bit32u addr, unsigned size, unsigned op, Bit32u val); void bx_dbg_ucmem_report(Bit32u addr, unsigned size, unsigned op, Bit32u val); Bit8u bx_dbg_ucmem_read(Bit32u addr); void bx_dbg_ucmem_write(Bit32u addr, Bit8u value); void bx_dbg_async_pin_request(unsigned what, Boolean val); void bx_dbg_async_pin_ack(unsigned what, Boolean val); Bit32u bx_dbg_inp(Bit16u addr, unsigned len); void bx_dbg_outp(Bit16u addr, Bit32u value, unsigned len); void bx_dbg_raise_HLDA(void); Bit8u bx_dbg_IAC(void); void bx_dbg_set_INTR(Boolean b); void bx_dbg_disassemble_current (int which_cpu, int print_time); int bx_dbg_symbolic_output(void); /* BW */ #endif // #ifdef __cplusplus #endif // #if BX_DEBUGGER