///////////////////////////////////////////////////////////////////////// // $Id: dbg_main.cc,v 1.113 2008-02-15 22:05:38 sshwarts 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 ///////////////////////////////////////////////////////////////////////// extern "C" { #include } #include "bochs.h" #include "cpu/cpu.h" #include "iodev/iodev.h" #if BX_DEBUGGER #define LOG_THIS genlog-> #if HAVE_LIBREADLINE extern "C" { #include #include #if HAVE_READLINE_HISTORY_H #include #endif } #endif // default CPU in the debugger. For commands like "dump_cpu" it will // use the default instead of always dumping all cpus. unsigned dbg_cpu = 0; bx_list_c *dbg_cpu_list = 0; extern const char* cpu_mode_string(unsigned cpu_mode); extern void bx_sr_after_restore_state(void); static bx_param_bool_c *sim_running = NULL; static char tmp_buf[512]; static char tmp_buf_prev[512]; static char *tmp_buf_ptr; static char *argv0 = NULL; static FILE *debugger_log = NULL; static struct { // some fields used for single CPU debugger bx_bool auto_disassemble; unsigned disassemble_size; char default_display_format; char default_unit_size; Bit32u default_addr; unsigned next_bpoint_id; } bx_debugger; typedef struct { FILE *fp; char fname[BX_MAX_PATH]; unsigned lineno; } bx_infile_stack_entry_t; bx_infile_stack_entry_t bx_infile_stack[BX_INFILE_DEPTH]; int bx_infile_stack_index = 0; static int bx_nest_infile(char *path); void bx_debug_ctrlc_handler(int signum); static void bx_unnest_infile(void); static void bx_get_command(void); static void bx_dbg_print_guard_results(); static void bx_dbg_breakpoint_changed(void); bx_guard_t bx_guard; // DMA stuff void bx_dbg_post_dma_reports(void); #define BX_BATCH_DMA_BUFSIZE 512 static struct { unsigned this_many; // batch this many max before posting events unsigned Qsize; // this many have been batched struct { bx_phy_address addr; // address of DMA op unsigned len; // number of bytes in op unsigned what; // BX_READ or BX_WRITE Bit32u val; // value of DMA op Bit64u time; // system time at this dma op } Q[BX_BATCH_DMA_BUFSIZE]; } bx_dbg_batch_dma; // some buffers for disassembly static disassembler bx_disassemble; static Bit8u bx_disasm_ibuf[32]; static char bx_disasm_tbuf[512]; #define DBG_PRINTF_BUFFER_LEN 1024 void dbg_printf(const char *fmt, ...) { va_list ap; va_start(ap, fmt); char *buf = new char[DBG_PRINTF_BUFFER_LEN+1]; vsnprintf(buf, DBG_PRINTF_BUFFER_LEN, fmt, ap); va_end(ap); if (debugger_log != NULL) { fprintf(debugger_log,"%s", buf); fflush(debugger_log); } SIM->debug_puts(buf); // send to debugger, which will free buf when done. } void bx_dbg_init_infile(void) { bx_infile_stack_index = 0; bx_infile_stack[0].fp = stdin; bx_infile_stack[0].lineno = 0; } int bx_dbg_set_rcfile(const char *rcfile) { strncpy(bx_infile_stack[0].fname, rcfile, BX_MAX_PATH); bx_infile_stack[0].fname[BX_MAX_PATH-1] = 0; BX_INFO(("debugger using rc file '%s'.", rcfile)); return bx_nest_infile((char*)rcfile); } int bx_dbg_main(void) { setbuf(stdout, NULL); setbuf(stderr, NULL); bx_dbg_batch_dma.this_many = 1; bx_dbg_batch_dma.Qsize = 0; memset(&bx_guard, 0, sizeof(bx_guard)); bx_guard.async.irq = 1; bx_guard.async.dma = 1; memset(&bx_debugger, 0, sizeof(bx_debugger)); bx_debugger.auto_disassemble = 1; bx_debugger.disassemble_size = 0; bx_debugger.default_display_format = 'x'; bx_debugger.default_unit_size = 'w'; bx_debugger.default_addr = 0; bx_debugger.next_bpoint_id = 1; dbg_cpu_list = (bx_list_c*) SIM->get_param("cpu0", SIM->get_bochs_root()); // Open debugger log file if needed if ((strlen(SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->getptr()) > 0) && (strcmp(SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->getptr(), "-") != 0)) { debugger_log = fopen(SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->getptr(), "w"); if (!debugger_log) { BX_PANIC(("Can not open debugger log file '%s'", SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->getptr())); } else { BX_INFO(("Using debugger log file %s", SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->getptr())); } } memset(bx_disasm_ibuf, 0, sizeof(bx_disasm_ibuf)); // create a boolean parameter that will tell if the simulation is // running (continue command) or waiting for user response. This affects // some parts of the GUI. if (sim_running == NULL) { bx_list_c *base = (bx_list_c*) SIM->get_param("general"); sim_running = new bx_param_bool_c(base, "debug_running", "Simulation is running", "", 0); } else { sim_running->set(0); } // setup Ctrl-C handler if (!SIM->has_debug_gui()) { signal(SIGINT, bx_debug_ctrlc_handler); BX_INFO(("set SIGINT handler to bx_debug_ctrlc_handler")); } // Print disassembly of the first instruction... you wouldn't think it // would have to be so hard. First initialize guard_found, since it is used // in the disassembly code to decide what instruction to print. for (int i=0; iguard_found.cs = BX_CPU(i)->sregs[BX_SEG_REG_CS].selector.value; BX_CPU(i)->guard_found.eip = BX_CPU(i)->prev_rip; BX_CPU(i)->guard_found.laddr = (BX_CPU(i)->get_segment_base(BX_SEG_REG_CS) + BX_CPU(i)->prev_rip); BX_CPU(i)->guard_found.is_32bit_code = (BX_CPU(i)->sregs[BX_SEG_REG_CS].cache.u.segment.d_b); BX_CPU(i)->guard_found.is_64bit_code = (BX_CPU(i)->get_cpu_mode() == BX_MODE_LONG_64); } // finally, call the usual function to print the disassembly dbg_printf("Next at t=" FMT_LL "d\n", bx_pc_system.time_ticks()); bx_dbg_disassemble_current(-1, 0); // all cpus, don't print time bx_dbg_user_input_loop(); if(debugger_log != NULL) fclose(debugger_log); bx_dbg_exit(0); return(0); // keep compiler happy } void bx_dbg_interpret_line(char *cmd) { bx_add_lex_input(cmd); bxparse(); } void bx_dbg_user_input_loop(void) { int reti; unsigned include_cmd_len = strlen(BX_INCLUDE_CMD); while(1) { SIM->refresh_ci(); SIM->set_display_mode(DISP_MODE_CONFIG); bx_get_command(); reparse: if ((*tmp_buf_ptr == '\n') || (*tmp_buf_ptr == 0)) { if ((*tmp_buf_prev != '\n') && (*tmp_buf_prev != 0)) { strncpy(tmp_buf, tmp_buf_prev, sizeof(tmp_buf_prev)); goto reparse; } } else if ((strncmp(tmp_buf_ptr, BX_INCLUDE_CMD, include_cmd_len) == 0) && (tmp_buf_ptr[include_cmd_len] == ' ' || tmp_buf_ptr[include_cmd_len] == '\t')) { char *ptr = tmp_buf_ptr + include_cmd_len+1; while(*ptr==' ' || *ptr=='\t') ptr++; int len = strlen(ptr); if (len == 0) { dbg_printf("%s: no filename given to 'source' command.\n", argv0); if (bx_infile_stack_index > 0) { dbg_printf("%s: ERROR in source file causes exit.\n", argv0); bx_dbg_exit(1); } continue; } ptr[len-1] = 0; // get rid of newline reti = bx_nest_infile(ptr); if ((reti==0) && (bx_infile_stack_index > 0)) { dbg_printf("%s: ERROR in source file causes exit.\n", argv0); bx_dbg_exit(1); } } else { // Give a chance to the command line extensions, to // consume the command. If they return 0, then // we need to process the command. A return of 1 // means, the extensions have handled the command if (bx_dbg_extensions(tmp_buf_ptr)==0) { // process command here bx_add_lex_input(tmp_buf_ptr); bxparse(); } } } } void bx_get_command(void) { char *charptr_ret; bx_infile_stack[bx_infile_stack_index].lineno++; char prompt[256]; if (bx_infile_stack_index == 0) { sprintf(prompt, " ", bx_infile_stack[bx_infile_stack_index].lineno); } if (SIM->has_debug_gui() && bx_infile_stack_index == 0) { // wait for wxWidgets to send another debugger command charptr_ret = SIM->debug_get_next_command(); if (charptr_ret) { strncpy(tmp_buf, charptr_ret, sizeof(tmp_buf)); strcat(tmp_buf, "\n"); // The returned string was allocated in wxmain.cc by "new char[]". // Free it with delete[]. delete [] charptr_ret; charptr_ret = &tmp_buf[0]; } else { // if debug_get_next_command returned NULL, probably the GUI is // shutting down } } #if HAVE_LIBREADLINE else if (bx_infile_stack_index == 0) { charptr_ret = readline(prompt); // beware, returns NULL on end of file if (charptr_ret && strlen(charptr_ret) > 0) { add_history(charptr_ret); strcpy(tmp_buf, charptr_ret); strcat(tmp_buf, "\n"); free(charptr_ret); charptr_ret = &tmp_buf[0]; } } else { charptr_ret = fgets(tmp_buf, sizeof(tmp_buf), bx_infile_stack[bx_infile_stack_index].fp); } #else /* !HAVE_LIBREADLINE */ else { if (bx_infile_stack_index == 0) dbg_printf("%s", prompt); strncpy(tmp_buf_prev, tmp_buf, sizeof(tmp_buf)); charptr_ret = fgets(tmp_buf, sizeof(tmp_buf), bx_infile_stack[bx_infile_stack_index].fp); } #endif if (charptr_ret == NULL) { // see if error was due to EOF condition if (feof(bx_infile_stack[bx_infile_stack_index].fp)) { if (bx_infile_stack_index > 0) { // nested level of include files, pop back to previous one bx_unnest_infile(); } else { // not nested, sitting at stdin prompt, user wants out bx_dbg_quit_command(); BX_PANIC(("bx_dbg_quit_command should not return, but it did")); } // call recursively bx_get_command(); return; } // error was not EOF, see if it was from a Ctrl-C if (bx_guard.interrupt_requested) { tmp_buf[0] = '\n'; tmp_buf[1] = 0; tmp_buf_ptr = &tmp_buf[0]; bx_guard.interrupt_requested = 0; return; } dbg_printf("fgets() returned ERROR.\n"); dbg_printf("intr request was %u\n", bx_guard.interrupt_requested); bx_dbg_exit(1); } tmp_buf_ptr = &tmp_buf[0]; if (debugger_log != NULL) { fprintf(debugger_log, "%s", tmp_buf); fflush(debugger_log); } // look for first non-whitespace character while (((*tmp_buf_ptr == ' ') || (*tmp_buf_ptr == '\t')) && (*tmp_buf_ptr != '\n') && (*tmp_buf_ptr != 0)) { tmp_buf_ptr++; } } int bx_nest_infile(char *path) { FILE *tmp_fp; tmp_fp = fopen(path, "r"); if (!tmp_fp) { dbg_printf("%s: can not open file '%s' for reading.\n", argv0, path); return(0); } if ((bx_infile_stack_index+1) >= BX_INFILE_DEPTH) { dbg_printf("%s: source files nested too deeply\n", argv0); return(0); } bx_infile_stack_index++; bx_infile_stack[bx_infile_stack_index].fp = tmp_fp; strncpy(bx_infile_stack[bx_infile_stack_index].fname, path, BX_MAX_PATH); bx_infile_stack[bx_infile_stack_index].fname[BX_MAX_PATH-1] = 0; bx_infile_stack[bx_infile_stack_index].lineno = 0; return(1); } void bx_unnest_infile(void) { if (bx_infile_stack_index <= 0) { dbg_printf("%s: ERROR: unnest_infile(): nesting level = 0.\n", argv0); bx_dbg_exit(1); } fclose(bx_infile_stack[bx_infile_stack_index].fp); bx_infile_stack_index--; } int bxwrap(void) { dbg_printf("%s: ERROR: bxwrap() called.\n", argv0); bx_dbg_exit(1); return(0); // keep compiler quiet } void bxerror(char *s) { dbg_printf("%s:%d: %s at '%s'\n", bx_infile_stack[bx_infile_stack_index].fname, bx_infile_stack[bx_infile_stack_index].lineno, s, bxtext); if (bx_infile_stack_index > 0) { dbg_printf("%s: ERROR in source file causes exit.\n", argv0); bx_dbg_exit(1); } } void bx_debug_ctrlc_handler(int signum) { UNUSED(signum); if (SIM->has_debug_gui()) { // in a multithreaded environment, a signal such as SIGINT can be sent to all // threads. This function is only intended to handle signals in the // simulator thread. It will simply return if called from any other thread. // Otherwise the BX_PANIC() below can be called in multiple threads at // once, leading to multiple threads trying to display a dialog box, // leading to GUI deadlock. if (!SIM->is_sim_thread()) { BX_INFO(("bx_signal_handler: ignored sig %d because it wasn't called from the simulator thread", signum)); return; } } BX_INFO(("Ctrl-C detected in signal handler.")); signal(SIGINT, bx_debug_ctrlc_handler); bx_debug_break(); } void bx_debug_break() { bx_guard.interrupt_requested = 1; } void bx_dbg_exception(unsigned cpu, Bit8u vector, Bit16u error_code) { if (BX_CPU(dbg_cpu)->trace || bx_dbg.exceptions) { dbg_printf("CPU %d: Exception 0x%02x occured (error_code=0x%04x)\n", cpu, vector, error_code); } } void bx_dbg_interrupt(unsigned cpu, Bit8u vector, Bit16u error_code) { if (BX_CPU(dbg_cpu)->trace || bx_dbg.interrupts) { dbg_printf("CPU %d: Interrupt 0x%02x occured (error_code=0x%04x)\n", cpu, vector, error_code); } } void bx_dbg_exit(int code) { BX_DEBUG(("dbg: before exit")); for (int cpu=0; cpu < BX_SMP_PROCESSORS; cpu++) { if (BX_CPU(cpu)) BX_CPU(cpu)->atexit(); } bx_atexit(); BX_EXIT(code); } // // functions for browsing of cpu state // void bx_dbg_print_sse_state(void) { #if BX_SUPPORT_SSE Bit32u mxcsr = SIM->get_param_num("SSE.mxcsr", dbg_cpu_list)->get(); dbg_printf("MXCSR: 0x%08x\n", mxcsr); char param_name[20]; for(unsigned i=0;iget_param_num(param_name, dbg_cpu_list)->get(); sprintf(param_name, "SSE.xmm%02d_lo", i); Bit64u lo = SIM->get_param_num(param_name, dbg_cpu_list)->get(); dbg_printf("XMM[%02u]: %08x%08x:%08x%08x\n", i, GET32H(hi), GET32L(hi), GET32H(lo), GET32L(lo)); } #else dbg_printf("The CPU doesn't support SSE state !"); #endif } void bx_dbg_print_mmx_state(void) { #if BX_SUPPORT_MMX char param_name[20]; for(unsigned i=0;i<8;i++) { sprintf(param_name, "FPU.st%d.fraction", i); Bit64u mmreg = SIM->get_param_num(param_name, dbg_cpu_list)->get(); dbg_printf("MM[%d]: %08x:%08x\n", i, GET32H(mmreg), GET32L(mmreg)); } #else dbg_printf("The CPU doesn't support MMX state !"); #endif } void bx_dbg_print_fpu_state(void) { #if BX_SUPPORT_FPU BX_CPU(dbg_cpu)->print_state_FPU(); #else dbg_printf("The CPU doesn't support FPU state !"); #endif } void bx_dbg_info_flags(void) { dbg_printf("IOPL=%1u %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s\n", BX_CPU(dbg_cpu)->get_IOPL(), BX_CPU(dbg_cpu)->get_ID() ? "ID" : "id", BX_CPU(dbg_cpu)->get_VIP() ? "VIP" : "vip", BX_CPU(dbg_cpu)->get_VIF() ? "VIF" : "vif", BX_CPU(dbg_cpu)->get_AC() ? "AC" : "ac", BX_CPU(dbg_cpu)->get_VM() ? "VM" : "vm", BX_CPU(dbg_cpu)->get_RF() ? "RF" : "rf", BX_CPU(dbg_cpu)->get_NT() ? "NT" : "nt", BX_CPU(dbg_cpu)->get_OF() ? "OF" : "of", BX_CPU(dbg_cpu)->get_DF() ? "DF" : "df", BX_CPU(dbg_cpu)->get_IF() ? "IF" : "if", BX_CPU(dbg_cpu)->get_TF() ? "TF" : "tf", BX_CPU(dbg_cpu)->get_SF() ? "SF" : "sf", BX_CPU(dbg_cpu)->get_ZF() ? "ZF" : "zf", BX_CPU(dbg_cpu)->get_AF() ? "AF" : "af", BX_CPU(dbg_cpu)->get_PF() ? "PF" : "pf", BX_CPU(dbg_cpu)->get_CF() ? "CF" : "cf"); } void bx_dbg_info_control_regs_command(void) { Bit32u cr0 = SIM->get_param_num("CR0", dbg_cpu_list)->get(); bx_address cr2 = SIM->get_param_num("CR2", dbg_cpu_list)->get(); bx_phy_address cr3 = SIM->get_param_num("CR3", dbg_cpu_list)->get(); dbg_printf("CR0=0x%08x\n", cr0); dbg_printf(" PG=paging=%d\n", (cr0>>31) & 1); dbg_printf(" CD=cache disable=%d\n", (cr0>>30) & 1); dbg_printf(" NW=not write through=%d\n", (cr0>>29) & 1); dbg_printf(" AM=alignment mask=%d\n", (cr0>>18) & 1); dbg_printf(" WP=write protect=%d\n", (cr0>>16) & 1); dbg_printf(" NE=numeric error=%d\n", (cr0>>5) & 1); dbg_printf(" ET=extension type=%d\n", (cr0>>4) & 1); dbg_printf(" TS=task switched=%d\n", (cr0>>3) & 1); dbg_printf(" EM=FPU emulation=%d\n", (cr0>>2) & 1); dbg_printf(" MP=monitor coprocessor=%d\n", (cr0>>1) & 1); dbg_printf(" PE=protection enable=%d\n", (cr0>>0) & 1); dbg_printf("CR2=page fault linear address=0x" FMT_ADDRX "\n", cr2); dbg_printf("CR3=0x%08x\n", cr3); dbg_printf(" PCD=page-level cache disable=%d\n", (cr3>>4) & 1); dbg_printf(" PWT=page-level writes transparent=%d\n", (cr3>>3) & 1); #if BX_CPU_LEVEL >= 4 Bit32u cr4 = SIM->get_param_num("CR4", dbg_cpu_list)->get(); dbg_printf("CR4=0x%08x\n", cr4); dbg_printf(" VME=virtual-8086 mode extensions=%d\n", (cr4>>0) & 1); dbg_printf(" PVI=protected-mode virtual interrupts=%d\n", (cr4>>1) & 1); dbg_printf(" TSD=time stamp disable=%d\n", (cr4>>2) & 1); dbg_printf(" DE=debugging extensions=%d\n", (cr4>>3) & 1); dbg_printf(" PSE=page size extensions=%d\n", (cr4>>4) & 1); dbg_printf(" PAE=physical address extension=%d\n", (cr4>>5) & 1); dbg_printf(" MCE=machine check enable=%d\n", (cr4>>6) & 1); dbg_printf(" PGE=page global enable=%d\n", (cr4>>7) & 1); dbg_printf(" PCE=performance-monitor counter enable=%d\n", (cr4>>8) & 1); dbg_printf(" OXFXSR=OS support for FXSAVE/FXRSTOR=%d\n", (cr4>>9) & 1); dbg_printf(" OSXMMEXCPT=OS support for unmasked SIMD FP exceptions=%d\n", (cr4>>10) & 1); #endif #if BX_SUPPORT_X86_64 Bit32u efer = SIM->get_param_num("MSR.EFER", dbg_cpu_list)->get(); dbg_printf("EFER=0x%08x\n", efer); dbg_printf(" SCE=SYSCALL/SYSRET support=%d\n", (efer>>0) & 1); dbg_printf(" LME=long mode enabled=%d\n", (efer>>8) & 1); dbg_printf(" LMA=long mode activated=%d\n", (efer>>10) & 1); dbg_printf(" NXE=non-execuable page protection=%d\n", (efer>>11) & 1); dbg_printf(" FFXSR=OS support for fast FXSAVE/FXRSTOR=%d\n", (efer>>14) & 1); #endif } void bx_dbg_info_segment_regs_command(void) { bx_dbg_sreg_t sreg; bx_dbg_global_sreg_t global_sreg; BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_CS); dbg_printf("cs:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_DS); dbg_printf("ds:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_SS); dbg_printf("ss:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_ES); dbg_printf("es:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_FS); dbg_printf("fs:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, BX_DBG_SREG_GS); dbg_printf("gs:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_ldtr(&sreg); dbg_printf("ldtr:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_tr(&sreg); dbg_printf("tr:s=0x%04x, dl=0x%08x, dh=0x%08x, valid=%u\n", (unsigned) sreg.sel, (unsigned) sreg.des_l, (unsigned) sreg.des_h, (unsigned) sreg.valid); BX_CPU(dbg_cpu)->dbg_get_gdtr(&global_sreg); dbg_printf("gdtr:base=0x%08x, limit=0x%x\n", (unsigned) global_sreg.base, (unsigned) global_sreg.limit); BX_CPU(dbg_cpu)->dbg_get_idtr(&global_sreg); dbg_printf("idtr:base=0x%08x, limit=0x%x\n", (unsigned) global_sreg.base, (unsigned) global_sreg.limit); } void bx_dbg_info_registers_command(int which_regs_mask) { bx_address reg; if (which_regs_mask & BX_INFO_GENERAL_PURPOSE_REGS) { #if BX_SUPPORT_SMP dbg_printf("%s:\n", BX_CPU(dbg_cpu)->name); #endif #if BX_SUPPORT_X86_64 == 0 reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EAX); dbg_printf("eax: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_ECX); dbg_printf("ecx: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EDX); dbg_printf("edx: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EBX); dbg_printf("ebx: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_ESP); dbg_printf("esp: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EBP); dbg_printf("ebp: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_ESI); dbg_printf("esi: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EDI); dbg_printf("edi: 0x%08x %d\n", (unsigned) reg, (int) reg); reg = bx_dbg_get_eip(); dbg_printf("eip: 0x%08x\n", (unsigned) reg); #else reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RAX); dbg_printf("rax: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RCX); dbg_printf("rcx: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RDX); dbg_printf("rdx: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RBX); dbg_printf("rbx: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RSP); dbg_printf("rsp: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RBP); dbg_printf("rbp: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RSI); dbg_printf("rsi: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_RDI); dbg_printf("rdi: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R8); dbg_printf("r8 : 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R9); dbg_printf("r9 : 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R10); dbg_printf("r10: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R11); dbg_printf("r11: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R12); dbg_printf("r12: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R13); dbg_printf("r13: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R14); dbg_printf("r14: 0x%08x:%08x ", GET32H(reg), GET32L(reg)); reg = BX_CPU(dbg_cpu)->get_reg32(BX_64BIT_REG_R15); dbg_printf("r15: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); reg = bx_dbg_get_instruction_pointer(); dbg_printf("rip: 0x%08x:%08x\n", GET32H(reg), GET32L(reg)); #endif reg = BX_CPU(dbg_cpu)->read_eflags(); dbg_printf("eflags 0x%08x\n", (unsigned) reg); bx_dbg_info_flags(); } #if BX_SUPPORT_FPU if (which_regs_mask & BX_INFO_FPU_REGS) { bx_dbg_print_fpu_state(); } #endif if (which_regs_mask & BX_INFO_MMX_REGS) { bx_dbg_print_mmx_state(); } if (which_regs_mask & BX_INFO_SSE_REGS) { bx_dbg_print_sse_state(); } } // // commands invoked from parser // void bx_dbg_quit_command(void) { BX_INFO(("dbg: Quit")); bx_dbg_exit(0); } void bx_dbg_trace_command(bx_bool enable) { BX_CPU(dbg_cpu)->trace = enable; dbg_printf("Tracing %s for %s\n", enable ? "enabled" : "disabled", BX_CPU(dbg_cpu)->name); } void bx_dbg_trace_reg_command(bx_bool enable) { BX_CPU(dbg_cpu)->trace_reg = enable; dbg_printf("Register-Tracing %s for %s\n", enable ? "enabled" : "disabled", BX_CPU(dbg_cpu)->name); } void bx_dbg_ptime_command(void) { dbg_printf("ptime: " FMT_LL "d\n", bx_pc_system.time_ticks()); } int timebp_timer = -1; Bit64u timebp_queue[MAX_CONCURRENT_BPS]; int timebp_queue_size = 0; void bx_dbg_timebp_command(bx_bool absolute, Bit64u time) { Bit64u abs_time = (absolute) ? time : time + bx_pc_system.time_ticks(); if (abs_time < bx_pc_system.time_ticks()) { dbg_printf("Request for time break point in the past. I can't let you do that.\n"); return; } if (timebp_queue_size == MAX_CONCURRENT_BPS) { dbg_printf("Too many time break points\n"); return; } Bit64u diff = (absolute) ? time - bx_pc_system.time_ticks() : time; if (timebp_timer >= 0) { if (timebp_queue_size == 0 || abs_time < timebp_queue[0]) { /* first in queue */ for (int i = timebp_queue_size; i >= 0; i--) timebp_queue[i+1] = timebp_queue[i]; timebp_queue[0] = abs_time; timebp_queue_size++; bx_pc_system.activate_timer_ticks(timebp_timer, diff, 1); } else { /* not first, insert at suitable place */ for (int i = 1; i < timebp_queue_size; i++) { if (timebp_queue[i] == abs_time) { dbg_printf("Time breakpoint not inserted (duplicate)\n"); return; } else if (abs_time < timebp_queue[i]) { for (int j = timebp_queue_size; j >= i; j++) timebp_queue[j+1] = timebp_queue[j]; timebp_queue[i] = abs_time; goto inserted; } } /* last */ timebp_queue[timebp_queue_size] = abs_time; inserted: timebp_queue_size++; } } else { timebp_queue_size = 1; timebp_queue[0] = abs_time; timebp_timer = bx_pc_system.register_timer_ticks(&bx_pc_system, bx_pc_system_c::timebp_handler, diff, 0, 1, "debug.timebp"); } dbg_printf("Time breakpoint inserted. Delta = " FMT_LL "u\n", diff); } Bit32u conv_4xBit8u_to_Bit32u(const Bit8u* buf) { Bit32u ret = 0; for (int i = 0; i < 4; i++) { ret |= (buf[i] << (8 * i)); } return ret; } void bx_dbg_record_command(char* path_quoted) { // skip beginning double quote if (path_quoted[0] == '"') path_quoted++; // null out ending quote int len = strlen(path_quoted); if (path_quoted[len - 1] == '"') path_quoted[len - 1] = '\0'; bx_dbg.record_io = fopen(path_quoted, "w"); if (bx_dbg.record_io) dbg_printf("IO record file '%s' opened\n", path_quoted); else dbg_printf("Error opening '%s' for writing\n", path_quoted); } static FILE* playback_file = 0; struct playback_entry_t { char command[100]; Bit32u argument; void trigger(); }; static playback_entry_t playback_entry; static Bit64u last_playback_time = 0; static int playback_timer_index = -1; void playback_function(void* this_ptr) { ((playback_entry_t*)this_ptr)->trigger(); } static void enter_playback_entry() { static const int playback_buf_size = 100; char playback_buf[playback_buf_size]; if (!fgets(playback_buf, playback_buf_size, playback_file)) return; Bit64u time; if (sscanf(playback_buf, "%s " FMT_LL "d %x", playback_entry.command, &time, &playback_entry.argument) != 3) { dbg_printf("Parse error in playback string '%s'\n", playback_buf); return; } Bit64u diff = time - last_playback_time; last_playback_time = time; if (time < last_playback_time) { BX_PANIC(("Negative diff in playback")); } else if (diff == 0) { playback_entry.trigger(); } else { if (playback_timer_index >= 0) bx_pc_system.activate_timer_ticks(playback_timer_index, diff, 0); else playback_timer_index = bx_pc_system.register_timer_ticks(&playback_entry, playback_function, diff, 0, 1, "debug.playback"); } } void playback_entry_t::trigger() { if (!strcmp("gen_scancode", command)) { DEV_kbd_gen_scancode(argument); } else { dbg_printf("Unknown playback command '%s'\n", command); return; } enter_playback_entry(); } void bx_dbg_playback_command(char* path_quoted) { // skip beginning double quote if (path_quoted[0] == '"') path_quoted++; // null out ending quote int len = strlen(path_quoted); if (path_quoted[len - 1] == '"') path_quoted[len - 1] = '\0'; playback_file = fopen(path_quoted, "r"); if (playback_file) { dbg_printf("Playback from '%s'\n", path_quoted); last_playback_time = 0; dbg_printf("playback times relative from " FMT_LL "d\n", bx_pc_system.time_ticks()); enter_playback_entry(); } else { dbg_printf("Error opening '%s' for reading\n", path_quoted); } } // toggles mode switch breakpoint void bx_dbg_modebp_command() { BX_CPU(dbg_cpu)->dbg_cpu_mode = BX_CPU(dbg_cpu)->get_cpu_mode(); BX_CPU(dbg_cpu)->mode_break = !BX_CPU(dbg_cpu)->mode_break; dbg_printf(" mode switch break %s\n", BX_CPU(dbg_cpu)->mode_break ? "enabled" : "disabled"); } static bx_bool bx_dbg_read_linear(unsigned which_cpu, bx_address laddr, unsigned len, Bit8u *buf) { unsigned remainsInPage; bx_phy_address paddr; unsigned read_len; bx_bool paddr_valid; next_page: remainsInPage = 0x1000 - (laddr & 0xfff); read_len = (remainsInPage < len) ? remainsInPage : len; paddr_valid = BX_CPU(which_cpu)->dbg_xlate_linear2phy(laddr, &paddr); if (paddr_valid) { if (! BX_MEM(0)->dbg_fetch_mem(BX_CPU(which_cpu), paddr, read_len, buf)) { dbg_printf("bx_dbg_read_linear: physical memory read error (phy=0x%08x, lin=0x" FMT_ADDRX "\n", paddr, laddr); return 0; } } else { dbg_printf("bx_dbg_read_linear: physical address not available for linear 0x" FMT_ADDRX "\n", laddr); return 0; } /* check for access across multiple pages */ if (remainsInPage < len) { laddr += read_len; len -= read_len; buf += read_len; goto next_page; } return 1; } // where // stack trace: ebp -> old ebp // return eip at ebp + 4 void bx_dbg_where_command() { if (!BX_CPU(dbg_cpu)->protected_mode()) { dbg_printf("'where' only supported in protected mode\n"); return; } if (BX_CPU(dbg_cpu)->get_segment_base(BX_SEG_REG_SS) != 0) { dbg_printf("non-zero stack base\n"); return; } Bit32u bp = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_EBP); Bit32u ip = BX_CPU(dbg_cpu)->get_instruction_pointer(); dbg_printf("(%d) 0x%08x\n", 0, ip); for (int i = 1; i < 50; i++) { // Up bx_phy_address paddr; Bit8u buf[4]; // bp = [bp]; bx_bool paddr_valid = BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(bp, &paddr); if (paddr_valid) { if (BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), paddr, 4, buf)) { bp = conv_4xBit8u_to_Bit32u(buf); } else { dbg_printf("(%d) Physical memory read error (BP)\n", i); break; } } else { dbg_printf("(%d) Could not translate linear address (BP)\n", i); break; } // ip = [bp + 4]; paddr_valid = BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(bp + 4, &paddr); if (paddr_valid) { if (BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), paddr, 4, buf)) { ip = conv_4xBit8u_to_Bit32u(buf); } else { dbg_printf("(%d) Physical memory read error (IP)\n", i); break; } } else { dbg_printf("(%d) Could not translate linear address (IP)\n", i); break; } // Print dbg_printf("(%d) 0x%08x\n", i, ip); } } void bx_dbg_print_string_command(bx_address start_addr) { dbg_printf("0x%08x: ", start_addr); for (int i = 0; ; i++) { Bit8u buf = 0; if (! bx_dbg_read_linear(dbg_cpu, start_addr+i, 1, &buf)) break; if (buf == 0) break; if (isgraph(buf) || buf == 0x20) dbg_printf("%c", buf); else dbg_printf("\\%d", buf); } dbg_printf("\n"); } static void dbg_print_guard_found(unsigned cpu_mode, Bit32u cs, bx_address eip, bx_address laddr) { #if BX_SUPPORT_X86_64 if (cpu_mode == BX_MODE_LONG_64) { dbg_printf("0x%04x:" FMT_ADDRX " (0x" FMT_ADDRX ")", cs, eip, laddr); return; } #endif if (cpu_mode >= BX_MODE_IA32_PROTECTED) dbg_printf("%04x:%08x (0x%08x)", cs, (unsigned) eip, (unsigned) laddr); else // real or v8086 mode dbg_printf("%04x:%04x (0x%08x)", cs, (unsigned) eip, (unsigned) laddr); } void bx_dbg_xlate_address(bx_lin_address laddr) { bx_phy_address paddr; laddr &= BX_CONST64(0xfffffffffffff000); bx_bool paddr_valid = BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(laddr, &paddr); if (paddr_valid) { dbg_printf("linear page 0x" FMT_ADDRX " maps to physical page 0x%08x\n", laddr, paddr); } else { dbg_printf("physical address not available for linear 0x" FMT_ADDRX "\n", laddr); } } unsigned dbg_show_mask = 0; #define BX_DBG_SHOW_CALLRET (Flag_call|Flag_ret) #define BX_DBG_SHOW_SOFTINT (Flag_softint) #define BX_DBG_SHOW_EXTINT (Flag_intsig) #define BX_DBG_SHOW_IRET (Flag_iret) #define BX_DBG_SHOW_INT (Flag_softint|Flag_iret|Flag_intsig) #define BX_DBG_SHOW_MODE (Flag_mode) void bx_dbg_show_command(const char* arg) { if(arg) { if (!strcmp(arg, "mode")) { if (dbg_show_mask & BX_DBG_SHOW_MODE) { dbg_show_mask &= ~BX_DBG_SHOW_MODE; dbg_printf("show mode switch: OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_MODE; dbg_printf("show mode switch: ON\n"); } } else if (!strcmp(arg, "int")) { if (dbg_show_mask & BX_DBG_SHOW_INT) { dbg_show_mask &= ~BX_DBG_SHOW_INT; dbg_printf("show interrupts tracing (extint/softint/iret): OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_INT; dbg_printf("show interrupts tracing (extint/softint/iret): ON\n"); } } else if (!strcmp(arg, "extint")) { if (dbg_show_mask & BX_DBG_SHOW_EXTINT) { dbg_show_mask &= ~BX_DBG_SHOW_EXTINT; dbg_printf("show external interrupts: OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_EXTINT; dbg_printf("show external interrupts: ON\n"); } } else if (!strcmp(arg, "softint")) { if (dbg_show_mask & BX_DBG_SHOW_SOFTINT) { dbg_show_mask &= ~BX_DBG_SHOW_SOFTINT; dbg_printf("show software interrupts: OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_SOFTINT; dbg_printf("show software interrupts: ON\n"); } } else if (!strcmp(arg, "iret")) { if (dbg_show_mask & BX_DBG_SHOW_IRET) { dbg_show_mask &= ~BX_DBG_SHOW_IRET; dbg_printf("show iret: OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_IRET; dbg_printf("show iret: ON\n"); } } else if(!strcmp(arg,"call")) { if (dbg_show_mask & BX_DBG_SHOW_CALLRET) { dbg_show_mask &= ~BX_DBG_SHOW_CALLRET; dbg_printf("show calls/returns: OFF\n"); } else { dbg_show_mask |= BX_DBG_SHOW_CALLRET; dbg_printf("show calls/returns: ON\n"); } } else if(!strcmp(arg,"off")) { dbg_show_mask = 0x0; dbg_printf("Disable all show flags\n"); } else if(!strcmp(arg,"dbg-all")) { bx_dbg.floppy = 1; bx_dbg.keyboard = 1; bx_dbg.video = 1; bx_dbg.disk = 1; bx_dbg.pit = 1; bx_dbg.pic = 1; bx_dbg.bios = 1; bx_dbg.cmos = 1; bx_dbg.a20 = 1; bx_dbg.interrupts = 1; bx_dbg.exceptions = 1; bx_dbg.unsupported = 1; bx_dbg.temp = 1; bx_dbg.reset = 1; bx_dbg.mouse = 1; bx_dbg.io = 1; bx_dbg.debugger = 1; bx_dbg.xms = 1; bx_dbg.v8086 = 1; bx_dbg.paging = 1; bx_dbg.creg = 1; bx_dbg.dreg = 1; bx_dbg.dma = 1; bx_dbg.unsupported_io = 1; /* bx_dbg.record_io = 1; this is a pointer .. somewhere */ dbg_printf("Turned ON all bx_dbg flags\n"); return; } else if(!strcmp(arg,"dbg-none")) { bx_dbg.floppy = 0; bx_dbg.keyboard = 0; bx_dbg.video = 0; bx_dbg.disk = 0; bx_dbg.pit = 0; bx_dbg.pic = 0; bx_dbg.bios = 0; bx_dbg.cmos = 0; bx_dbg.a20 = 0; bx_dbg.interrupts = 0; bx_dbg.exceptions = 0; bx_dbg.unsupported = 0; bx_dbg.temp = 0; bx_dbg.reset = 0; bx_dbg.mouse = 0; bx_dbg.io = 0; bx_dbg.debugger = 0; bx_dbg.xms = 0; bx_dbg.v8086 = 0; bx_dbg.paging = 0; bx_dbg.creg = 0; bx_dbg.dreg = 0; bx_dbg.dma = 0; bx_dbg.unsupported_io = 0; /* bx_dbg.record_io = 0; this is a pointer .. somewhere */ dbg_printf("Turned OFF all bx_dbg flags\n"); return; } else if(!strcmp(arg,"vga")){ DEV_vga_refresh(); return; } else { dbg_printf("Unrecognized arg: %s (only 'mode', 'int', 'softint', 'extint', 'iret', 'call', 'off', 'dbg-all' and 'dbg-none' are valid)\n", arg); return; } } if (dbg_show_mask) { dbg_printf("show mask is:"); if (dbg_show_mask & BX_DBG_SHOW_CALLRET) dbg_printf(" call"); if (dbg_show_mask & BX_DBG_SHOW_SOFTINT) dbg_printf(" softint"); if (dbg_show_mask & BX_DBG_SHOW_EXTINT) dbg_printf(" extint"); if (dbg_show_mask & BX_DBG_SHOW_IRET) dbg_printf(" iret"); if (dbg_show_mask & BX_DBG_SHOW_MODE) dbg_printf(" mode"); dbg_printf("\n"); } else { dbg_printf("show mask is: 0\n"); } } void bx_dbg_show_param_command(char *param) { // remove leading and trailing quotas dbg_printf("show param name: <%s>\n", param); print_tree(SIM->get_param(param, SIM->get_bochs_root()), 0); } // return non zero to cause a stop int bx_dbg_show_symbolic(void) { static unsigned last_cpu_mode = 0; static bx_phy_address last_cr3 = 0; /* modes & address spaces */ if (dbg_show_mask & BX_DBG_SHOW_MODE) { if(BX_CPU(dbg_cpu)->get_cpu_mode() != last_cpu_mode) { dbg_printf (FMT_TICK ": switched from '%s' to '%s'\n", bx_pc_system.time_ticks(), cpu_mode_string(last_cpu_mode), cpu_mode_string(BX_CPU(dbg_cpu)->get_cpu_mode())); } if(last_cr3 != BX_CPU(dbg_cpu)->cr3) dbg_printf(FMT_TICK ": address space switched. CR3: 0x08x\n", bx_pc_system.time_ticks(), BX_CPU(dbg_cpu)->cr3); } /* interrupts */ if (dbg_show_mask & BX_DBG_SHOW_SOFTINT) { if(BX_CPU(dbg_cpu)->show_flag & Flag_softint) { dbg_printf(FMT_TICK ": softint ", bx_pc_system.time_ticks()); dbg_print_guard_found(BX_CPU(dbg_cpu)->get_cpu_mode(), BX_CPU(dbg_cpu)->guard_found.cs, BX_CPU(dbg_cpu)->guard_found.eip, BX_CPU(dbg_cpu)->guard_found.laddr); dbg_printf("\n"); } } if (dbg_show_mask & BX_DBG_SHOW_EXTINT) { if((BX_CPU(dbg_cpu)->show_flag & Flag_intsig) && !(BX_CPU(dbg_cpu)->show_flag & Flag_softint)) { dbg_printf(FMT_TICK ": exception (not softint) ", bx_pc_system.time_ticks()); dbg_print_guard_found(BX_CPU(dbg_cpu)->get_cpu_mode(), BX_CPU(dbg_cpu)->guard_found.cs, BX_CPU(dbg_cpu)->guard_found.eip, BX_CPU(dbg_cpu)->guard_found.laddr); dbg_printf("\n"); } } if (dbg_show_mask & BX_DBG_SHOW_IRET) { if(BX_CPU(dbg_cpu)->show_flag & Flag_iret) { dbg_printf(FMT_TICK ": iret ", bx_pc_system.time_ticks()); dbg_print_guard_found(BX_CPU(dbg_cpu)->get_cpu_mode(), BX_CPU(dbg_cpu)->guard_found.cs, BX_CPU(dbg_cpu)->guard_found.eip, BX_CPU(dbg_cpu)->guard_found.laddr); dbg_printf("\n"); } } /* calls */ if (dbg_show_mask & BX_DBG_SHOW_CALLRET) { if(BX_CPU(dbg_cpu)->show_flag & Flag_call) { bx_phy_address phy = 0; bx_bool valid = BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(BX_CPU(dbg_cpu)->guard_found.laddr, &phy); dbg_printf(FMT_TICK ": call ", bx_pc_system.time_ticks()); dbg_print_guard_found(BX_CPU(dbg_cpu)->get_cpu_mode(), BX_CPU(dbg_cpu)->guard_found.cs, BX_CPU(dbg_cpu)->guard_found.eip, BX_CPU(dbg_cpu)->guard_found.laddr); if (!valid) dbg_printf(" phys not valid"); else { dbg_printf(" (phy: 0x%08x) %s", phy, bx_dbg_symbolic_address(BX_CPU(dbg_cpu)->cr3, BX_CPU(dbg_cpu)->guard_found.eip, BX_CPU(dbg_cpu)->guard_found.laddr - BX_CPU(dbg_cpu)->guard_found.eip)); } dbg_printf("\n"); } } last_cr3 = BX_CPU(dbg_cpu)->cr3; last_cpu_mode = BX_CPU(dbg_cpu)->get_cpu_mode(); BX_CPU(dbg_cpu)->show_flag = 0; return 0; } void bx_dbg_print_stack_command(unsigned nwords) { bx_address linear_sp; unsigned len; #if BX_SUPPORT_X86_64 if (BX_CPU(dbg_cpu)->get_cpu_mode() == BX_MODE_LONG_64) { linear_sp = BX_CPU(dbg_cpu)->get_reg64(BX_64BIT_REG_RSP); len = 8; } else #endif { if (BX_CPU(dbg_cpu)->sregs[BX_SEG_REG_SS].cache.u.segment.d_b) { linear_sp = BX_CPU(dbg_cpu)->get_reg32(BX_32BIT_REG_ESP); len = 4; } else { linear_sp = BX_CPU(dbg_cpu)->get_reg16(BX_16BIT_REG_SP); len = 2; } } Bit8u buf[8]; dbg_printf("Stack address size %d\n", len); for (unsigned i = 0; i < nwords; i++) { if (! bx_dbg_read_linear(dbg_cpu, linear_sp, len, buf)) break; #if BX_SUPPORT_X86_64 if (len == 8) { dbg_printf(" | STACK 0x%08x%08x [0x%08x:0x%08x]\n", GET32H(linear_sp), GET32L(linear_sp), (unsigned) conv_4xBit8u_to_Bit32u(buf+4), (unsigned) conv_4xBit8u_to_Bit32u(buf)); } else #endif { if (len == 4) { dbg_printf(" | STACK 0x%08x [0x%08x]\n", (unsigned) linear_sp, (unsigned) conv_4xBit8u_to_Bit32u(buf)); } else { dbg_printf(" | STACK 0x%04x [0x%04x]\n", (unsigned) linear_sp, (unsigned) conv_4xBit8u_to_Bit32u(buf)); } } linear_sp += len; } } unsigned num_write_watchpoints = 0; unsigned num_read_watchpoints = 0; bx_phy_address write_watchpoint[MAX_WRITE_WATCHPOINTS]; bx_phy_address read_watchpoint[MAX_READ_WATCHPOINTS]; bx_bool watchpoint_continue = 0; void bx_dbg_watch(int read, bx_phy_address address) { if (read == -1) { // print watch point info unsigned i; for (i = 0; i < num_read_watchpoints; i++) { Bit8u buf[2]; if (BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), read_watchpoint[i], 2, buf)) dbg_printf("read %08x (%04x)\n", read_watchpoint[i], (int)buf[0] | ((int)buf[1] << 8)); else dbg_printf("read %08x (read error)\n", read_watchpoint[i]); } for (i = 0; i < num_write_watchpoints; i++) { Bit8u buf[2]; if (BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), write_watchpoint[i], 2, buf)) dbg_printf("write %08x (%04x)\n", write_watchpoint[i], (int)buf[0] | ((int)buf[1] << 8)); else dbg_printf("write %08x (read error)\n", write_watchpoint[i]); } } else { if (read) { if (num_read_watchpoints == MAX_READ_WATCHPOINTS) { dbg_printf("Too many read watchpoints\n"); return; } read_watchpoint[num_read_watchpoints++] = address; dbg_printf("Read watchpoint at 0x%08x inserted\n", address); } else { if (num_write_watchpoints == MAX_WRITE_WATCHPOINTS) { dbg_printf("Too many write watchpoints\n"); return; } write_watchpoint[num_write_watchpoints++] = address; dbg_printf("Write watchpoint at 0x%08x inserted\n", address); } } } void bx_dbg_unwatch(int read, bx_phy_address address) { if (read == -1) { // unwatch all num_read_watchpoints = num_write_watchpoints = 0; dbg_printf("All watchpoints removed\n"); } else { if (read) { dbg_printf("Watchpoint remove not implemented\n"); } else { dbg_printf("Watchpoint remove not implemented\n"); } } } void bx_dbg_continue_command(void) { // continue executing, until a guard found one_more: // I must guard for ICOUNT or one CPU could run forever without giving // the others a chance. bx_guard.guard_for |= BX_DBG_GUARD_CTRL_C; // stop on Ctrl-C // update gui (disable continue command, enable stop command, etc.) sim_running->set(1); SIM->refresh_ci(); // use simulation mode while executing instructions. When the prompt // is printed, we will return to config mode. SIM->set_display_mode(DISP_MODE_SIM); bx_guard.interrupt_requested = 0; int stop = 0; int which = -1; while (!stop && !bx_guard.interrupt_requested) { // the quantum is an arbitrary number of cycles to run in each // processor. In SMP mode, when this limit is reached, the // cpu_loop exits so that another processor can be simulated // for a few cycles. With a single processor, the quantum // setting should have no effect, although a low setting does // lead to poor performance because cpu_loop is returning and // getting called again, over and over. #define BX_DBG_DEFAULT_ICOUNT_QUANTUM 5 Bit32u quantum = (BX_SMP_PROCESSORS>1) ? BX_DBG_DEFAULT_ICOUNT_QUANTUM : 0; int cpu; for (cpu=0; cpu < BX_SMP_PROCESSORS; cpu++) { BX_CPU(cpu)->guard_found.guard_found = 0; BX_CPU(cpu)->guard_found.icount = 0; BX_CPU(cpu)->guard_found.time_tick = bx_pc_system.time_ticks(); BX_CPU(cpu)->cpu_loop(quantum); // set stop flag if a guard found other than icount or halted unsigned long found = BX_CPU(cpu)->guard_found.guard_found; stop_reason_t reason = (stop_reason_t) BX_CPU(cpu)->stop_reason; if (found) { stop = 1; which = cpu; } else if (reason != STOP_NO_REASON && reason != STOP_CPU_HALTED) { stop = 1; which = cpu; } // even if stop==1, finish cycling through all processors. // "which" remembers which cpu set the stop flag. If multiple // cpus set stop, too bad. } #if BX_SUPPORT_SMP // increment time tick only after all processors have had their chance. if (BX_SMP_PROCESSORS == 1) { // all ticks are handled inside the cpu loop } else { // We must tick by the number of instructions that were // ACTUALLY executed, not the number that we asked it to // execute. Even this is tricky with SMP because one might // have hit a breakpoint, while others executed the whole // quantum. Bit32u max_executed = 0; for (cpu=0; cpuguard_found.icount > max_executed) max_executed = BX_CPU(cpu)->guard_found.icount; } // potential deadlock if all processors are halted. Then // max_executed will be 0, tick will be incremented by zero, and // there will never be a timed event to wake them up. To avoid this, // always tick by a minimum of 1. if (max_executed < 1) max_executed=1; BX_TICKN(max_executed); } #endif } sim_running->set(0); SIM->refresh_ci(); // (mch) hack DEV_vga_refresh(); BX_INSTR_DEBUG_PROMPT(); bx_dbg_print_guard_results(); if (watchpoint_continue && (BX_CPU(which)->stop_reason == STOP_READ_WATCH_POINT || BX_CPU(which)->stop_reason == STOP_WRITE_WATCH_POINT)) goto one_more; } void bx_dbg_stepN_command(Bit32u count) { if (count == 0) { dbg_printf("Error: stepN: count=0\n"); return; } // use simulation mode while executing instructions. When the prompt // is printed, we will return to config mode. SIM->set_display_mode(DISP_MODE_SIM); // single CPU bx_guard.guard_for |= BX_DBG_GUARD_CTRL_C; // or Ctrl-C // for now, step each CPU one instruction at a time for (unsigned cycle=0; cycle < count; cycle++) { for (unsigned cpu=0; cpu < BX_SMP_PROCESSORS; cpu++) { bx_guard.interrupt_requested = 0; BX_CPU(cpu)->guard_found.guard_found = 0; BX_CPU(cpu)->guard_found.icount = 0; BX_CPU(cpu)->guard_found.time_tick = bx_pc_system.time_ticks(); BX_CPU(cpu)->cpu_loop(1); } #if BX_SUPPORT_SMP == 0 // ticks are handled inside the cpu loop #else BX_TICK1(); #endif } BX_INSTR_DEBUG_PROMPT(); bx_dbg_print_guard_results(); } void bx_dbg_disassemble_current(int which_cpu, int print_time) { bx_phy_address phy; if (which_cpu < 0) { // iterate over all of them. for (int i=0; idbg_xlate_linear2phy(BX_CPU(which_cpu)->guard_found.laddr, &phy); if (! phy_valid) { dbg_printf("(%u).[" FMT_LL "d] ??? (physical address not available)\n", which_cpu, bx_pc_system.time_ticks()); return; } if (bx_dbg_read_linear(which_cpu, BX_CPU(which_cpu)->guard_found.laddr, 16, bx_disasm_ibuf)) { unsigned ilen = bx_disassemble.disasm(BX_CPU(which_cpu)->guard_found.is_32bit_code, BX_CPU(which_cpu)->guard_found.is_64bit_code, BX_CPU(which_cpu)->get_segment_base(BX_SEG_REG_CS), BX_CPU(which_cpu)->guard_found.eip, bx_disasm_ibuf, bx_disasm_tbuf); // Note: it would be nice to display only the modified registers here, the easy // way out I have thought of would be to keep a prev_eax, prev_ebx, etc copies // in each cpu description (see cpu/cpu.h) and update/compare those "prev" values // from here. (eks) if(BX_CPU(dbg_cpu)->trace_reg) bx_dbg_info_registers_command(BX_INFO_GENERAL_PURPOSE_REGS); if (print_time) dbg_printf("(%u).[" FMT_LL "d] ", which_cpu, bx_pc_system.time_ticks()); else dbg_printf("(%u) ", which_cpu); if (BX_CPU(which_cpu)->protected_mode()) { dbg_printf("[0x%08x] %04x:" FMT_ADDRX " (%s): ", phy, BX_CPU(which_cpu)->guard_found.cs, BX_CPU(which_cpu)->guard_found.eip, bx_dbg_symbolic_address((BX_CPU(which_cpu)->cr3) >> 12, BX_CPU(which_cpu)->guard_found.eip, BX_CPU(which_cpu)->get_segment_base(BX_SEG_REG_CS))); } else { // Real & V86 mode dbg_printf("[0x%08x] %04x:%04x (%s): ", phy, BX_CPU(which_cpu)->guard_found.cs, (unsigned) BX_CPU(which_cpu)->guard_found.eip, bx_dbg_symbolic_address_16bit(BX_CPU(which_cpu)->guard_found.eip, BX_CPU(which_cpu)->sregs[BX_SEG_REG_CS].selector.value)); } dbg_printf("%-25s ; ", bx_disasm_tbuf); for (unsigned j=0; jguard_found.guard_found; if (found & BX_DBG_GUARD_CTRL_C) { /* ... */ } #if (BX_DBG_MAX_VIR_BPOINTS > 0) else if (found & BX_DBG_GUARD_IADDR_VIR) { i = BX_CPU(cpu)->guard_found.iaddr_index; dbg_printf("(%u) Breakpoint %u, in "); dbg_print_guard_found(BX_CPU(dbg_cpu)->get_cpu_mode(), BX_CPU(cpu)->guard_found.cs, BX_CPU(cpu)->guard_found.eip, BX_CPU(cpu)->guard_found.laddr); dbg_printf("\n"); } #endif #if (BX_DBG_MAX_LIN_BPOINTS > 0) else if (found & BX_DBG_GUARD_IADDR_LIN) { i = BX_CPU(cpu)->guard_found.iaddr_index; if (bx_guard.iaddr.lin[i].bpoint_id != 0) dbg_printf("(%u) Breakpoint %u, 0x" FMT_ADDRX " in ?? ()\n", cpu, bx_guard.iaddr.lin[i].bpoint_id, BX_CPU(cpu)->guard_found.laddr); } #endif #if (BX_DBG_MAX_PHY_BPOINTS > 0) else if (found & BX_DBG_GUARD_IADDR_PHY) { i = BX_CPU(cpu)->guard_found.iaddr_index; dbg_printf("(%u) Breakpoint %u, 0x" FMT_ADDRX " in ?? ()\n", cpu, bx_guard.iaddr.phy[i].bpoint_id, BX_CPU(cpu)->guard_found.laddr); } #endif switch(BX_CPU(cpu)->stop_reason) { case STOP_NO_REASON: case STOP_CPU_HALTED: break; case STOP_TIME_BREAK_POINT: dbg_printf("(%u) Caught time breakpoint\n", cpu); break; case STOP_READ_WATCH_POINT: dbg_printf("(%u) Caught read watch point at %08X\n", cpu, BX_CPU(cpu)->watchpoint); break; case STOP_WRITE_WATCH_POINT: dbg_printf("(%u) Caught write watch point at %08X\n", cpu, BX_CPU(cpu)->watchpoint); break; case STOP_MAGIC_BREAK_POINT: dbg_printf("(%u) Magic breakpoint\n", cpu); break; case STOP_MODE_BREAK_POINT: dbg_printf("(%u) Caught mode switch breakpoint switching to '%s'\n", cpu, cpu_mode_string(BX_CPU(cpu)->get_cpu_mode())); break; default: dbg_printf("Error: (%u) print_guard_results: guard_found ? (stop reason %u)\n", cpu, BX_CPU(cpu)->stop_reason); } if (bx_debugger.auto_disassemble) { if (cpu==0) { // print this only once dbg_printf("Next at t=" FMT_LL "d\n", bx_pc_system.time_ticks ()); } bx_dbg_disassemble_current(cpu, 0); // one cpu, don't print time } } #if 0 // print the TSC value for every CPU for (cpu=0; cputsc); } #endif } void bx_dbg_breakpoint_changed(void) { #if (BX_DBG_MAX_VIR_BPOINTS > 0) if (bx_guard.iaddr.num_virtual) bx_guard.guard_for |= BX_DBG_GUARD_IADDR_VIR; else bx_guard.guard_for &= ~BX_DBG_GUARD_IADDR_VIR; #endif #if (BX_DBG_MAX_LIN_BPOINTS > 0) if (bx_guard.iaddr.num_linear) bx_guard.guard_for |= BX_DBG_GUARD_IADDR_LIN; else bx_guard.guard_for &= ~BX_DBG_GUARD_IADDR_LIN; #endif #if (BX_DBG_MAX_PHY_BPOINTS > 0) if (bx_guard.iaddr.num_physical) bx_guard.guard_for |= BX_DBG_GUARD_IADDR_PHY; else bx_guard.guard_for &= ~BX_DBG_GUARD_IADDR_PHY; #endif } void bx_dbg_en_dis_breakpoint_command(unsigned handle, bx_bool enable) { #if (BX_DBG_MAX_VIR_BPOINTS > 0) if (bx_dbg_en_dis_vbreak(handle, enable)) goto done; #endif #if (BX_DBG_MAX_LIN_BPOINTS > 0) if (bx_dbg_en_dis_lbreak(handle, enable)) goto done; #endif #if (BX_DBG_MAX_PHY_BPOINTS > 0) if (bx_dbg_en_dis_pbreak(handle, enable)) goto done; #endif dbg_printf("Error: breakpoint %u not found.\n", handle); return; done: bx_dbg_breakpoint_changed(); } bx_bool bx_dbg_en_dis_pbreak(unsigned handle, bx_bool enable) { #if (BX_DBG_MAX_PHY_BPOINTS > 0) // see if breakpoint is a physical breakpoint for (unsigned i=0; i 0) // see if breakpoint is a linear breakpoint for (unsigned i=0; i 0) // see if breakpoint is a virtual breakpoint for (unsigned i=0; i 0) if (bx_dbg_del_vbreak(handle)) goto done; #endif #if (BX_DBG_MAX_LIN_BPOINTS > 0) if (bx_dbg_del_lbreak(handle)) goto done; #endif #if (BX_DBG_MAX_PHY_BPOINTS > 0) if (bx_dbg_del_pbreak(handle)) goto done; #endif dbg_printf("Error: breakpoint %u not found.\n", handle); return; done: bx_dbg_breakpoint_changed(); } bx_bool bx_dbg_del_pbreak(unsigned handle) { #if (BX_DBG_MAX_PHY_BPOINTS > 0) // see if breakpoint is a physical breakpoint for (unsigned i=0; i 0) // see if breakpoint is a linear breakpoint for (unsigned i=0; i 0) // see if breakpoint is a virtual breakpoint for (unsigned i=0; i 0) if (bk != bkRegular) { dbg_printf("Error: vbreak of this kind not implemented yet.\n"); return -1; } if (bx_guard.iaddr.num_virtual >= BX_DBG_MAX_VIR_BPOINTS) { dbg_printf("Error: no more virtual breakpoint slots left.\n"); dbg_printf("Error: see BX_DBG_MAX_VIR_BPOINTS.\n"); return -1; } bx_guard.iaddr.vir[bx_guard.iaddr.num_virtual].cs = cs; bx_guard.iaddr.vir[bx_guard.iaddr.num_virtual].eip = eip; bx_guard.iaddr.vir[bx_guard.iaddr.num_virtual].bpoint_id = bx_debugger.next_bpoint_id++; int BpId = (int)bx_guard.iaddr.vir[bx_guard.iaddr.num_virtual].bpoint_id; bx_guard.iaddr.vir[bx_guard.iaddr.num_virtual].enabled=1; bx_guard.iaddr.num_virtual++; bx_guard.guard_for |= BX_DBG_GUARD_IADDR_VIR; return BpId; #else dbg_printf("Error: virtual breakpoint support not compiled in.\n"); dbg_printf("Error: make sure BX_DBG_MAX_VIR_BPOINTS > 0\n"); return -1; #endif } int bx_dbg_lbreakpoint_command(BreakpointKind bk, bx_address laddress) { #if (BX_DBG_MAX_LIN_BPOINTS > 0) if (bk == bkAtIP) { dbg_printf("Error: lbreak of this kind not implemented yet.\n"); return -1; } if (bx_guard.iaddr.num_linear >= BX_DBG_MAX_LIN_BPOINTS) { dbg_printf("Error: no more linear breakpoint slots left.\n"); dbg_printf("Error: see BX_DBG_MAX_LIN_BPOINTS.\n"); return -1; } bx_guard.iaddr.lin[bx_guard.iaddr.num_linear].addr = laddress; int BpId = (bk == bkStepOver) ? 0 : bx_debugger.next_bpoint_id++; bx_guard.iaddr.lin[bx_guard.iaddr.num_linear].bpoint_id = BpId; bx_guard.iaddr.lin[bx_guard.iaddr.num_linear].enabled=1; bx_guard.iaddr.num_linear++; bx_guard.guard_for |= BX_DBG_GUARD_IADDR_LIN; return BpId; #else dbg_printf("Error: linear breakpoint support not compiled in.\n"); dbg_printf("Error: make sure BX_DBG_MAX_LIN_BPOINTS > 0\n"); return -1; #endif } int bx_dbg_pbreakpoint_command(BreakpointKind bk, bx_phy_address paddress) { #if (BX_DBG_MAX_PHY_BPOINTS > 0) if (bk != bkRegular) { dbg_printf("Error: pbreak of this kind not implemented yet.\n"); return -1; } if (bx_guard.iaddr.num_physical >= BX_DBG_MAX_PHY_BPOINTS) { dbg_printf("Error: no more physical breakpoint slots left.\n"); dbg_printf("Error: see BX_DBG_MAX_PHY_BPOINTS.\n"); return -1; } bx_guard.iaddr.phy[bx_guard.iaddr.num_physical].addr = paddress; bx_guard.iaddr.phy[bx_guard.iaddr.num_physical].bpoint_id = bx_debugger.next_bpoint_id++; int BpId = (int)bx_guard.iaddr.phy[bx_guard.iaddr.num_physical].bpoint_id; bx_guard.iaddr.phy[bx_guard.iaddr.num_physical].enabled=1; bx_guard.iaddr.num_physical++; bx_guard.guard_for |= BX_DBG_GUARD_IADDR_PHY; return BpId; #else dbg_printf("Error: physical breakpoint support not compiled in.\n"); dbg_printf("Error: make sure BX_DBG_MAX_PHY_BPOINTS > 0\n"); return -1; #endif } void bx_dbg_info_bpoints_command(void) { unsigned i; // Num Type Disp Enb Address What // 1 breakpoint keep y 0x00010664 in main at temp.c:7 dbg_printf("Num Type Disp Enb Address\n"); #if (BX_DBG_MAX_VIR_BPOINTS > 0) for (i=0; i 0) for (i=0; i 0) for (i=0; idbg_take_dma(); } bx_dbg_batch_dma.this_many = 1; // reset to normal bx_dbg_post_dma_reports(); // print reports and flush if (bx_guard.report.dma) dbg_printf("done\n"); } else if (! strcmp(what, "irq")) { BX_CPU(0)->dbg_take_irq(); if (bx_guard.report.irq) dbg_printf("done\n"); } else { dbg_printf("Error: Take '%s' not understood.\n", what); } } static void bx_print_char(Bit8u ch) { if (ch < 10) dbg_printf(" \\%d ", ch); else if (isprint(ch)) dbg_printf(" %c ", ch); else dbg_printf(" \\x%02X", ch); } void dbg_printf_binary(char *format, Bit32u data, int bits) { int b,len = 0; char num[33]; for (b = 1 << (bits - 1); b; b >>= 1) num [len++] = (data & b) ? '1' : '0'; num [len] = 0; dbg_printf (format, num); } void bx_dbg_examine_command(char *command, char *format, bx_bool format_passed, bx_address addr, bx_bool addr_passed) { unsigned repeat_count, i; char ch, display_format, unit_size; bx_bool iteration, memory_dump = false; unsigned data_size; Bit8u data8; Bit16u data16; Bit32u data32; unsigned columns, per_line, offset; bx_bool is_linear; unsigned char databuf[8]; dbg_printf("[bochs]:\n"); // If command was the extended "xp" command, meaning eXamine Physical memory, // then flag memory address as physical, rather than linear. if (strcmp(command, "xp") == 0) { is_linear = 0; } else { is_linear = 1; } if (addr_passed==0) addr = bx_debugger.default_addr; if (format_passed==0) { display_format = bx_debugger.default_display_format; unit_size = bx_debugger.default_unit_size; repeat_count = 1; } else { if (format==NULL) { dbg_printf("dbg_examine: format NULL\n"); bx_dbg_exit(1); } if (strlen(format) < 2) { dbg_printf("dbg_examine: invalid format passed.\n"); bx_dbg_exit(1); } if (format[0] != '/') { dbg_printf("dbg_examine: '/' is not first char of format.\n"); bx_dbg_exit(1); } format++; repeat_count = 0; ch = *format; iteration = 0; while ((ch>='0') && (ch<='9')) { iteration = 1; repeat_count = 10*repeat_count + (ch-'0'); format++; ch = *format; } if (iteration==0) { // if no count given, use default repeat_count = 1; } else if (repeat_count==0) { // count give, but zero is an error dbg_printf("dbg_examine: repeat count given but is zero.\n"); return; } // set up the default display format and unit size parameters display_format = bx_debugger.default_display_format; unit_size = bx_debugger.default_unit_size; for (i = 0; format [i]; i++) { switch (ch = format [i]) { case 'x': // hex case 'd': // signed decimal case 'u': // unsigned decimal case 'o': // octal case 't': // binary case 'c': // chars case 's': // null terminated string case 'i': // machine instruction display_format = ch; break; case 'b': // bytes case 'h': // halfwords (two bytes) case 'w': // words (4 bytes) case 'g': // giant words (8 bytes) unit_size = ch; break; case 'm': // memory dump memory_dump = true; break; default: dbg_printf("dbg_examine: invalid format passed. \'%c\'\n", ch); bx_dbg_exit(1); break; } } // store current options as default bx_debugger.default_display_format = display_format; bx_debugger.default_unit_size = unit_size; } if ((display_format == 'i') || (display_format == 's')) { dbg_printf("error: dbg_examine: 'i' and 's' formats not supported.\n"); return; } if (unit_size == 'g') { dbg_printf("error: dbg_examine: 'g' (8-byte) unit size not supported.\n"); return; } data_size = 0; per_line = 0; offset = 0; if (memory_dump) { if (display_format == 'c') { // Display character dump in lines of 64 characters unit_size = 'b'; data_size = 1; per_line = 64; } else switch (unit_size) { case 'b': data_size = 1; per_line = 16; break; case 'h': data_size = 2; per_line = 8; break; case 'w': data_size = 4; per_line = 4; break; //case 'g': data_size = 8; per_line = 2; break; } // binary format is quite large if (display_format == 't') per_line /= 4; } else { switch (unit_size) { case 'b': data_size = 1; per_line = 8; break; case 'h': data_size = 2; per_line = 8; break; case 'w': data_size = 4; per_line = 4; break; //case 'g': data_size = 8; per_line = 2; break; } } columns = per_line + 1; // set current number columns past limit for (i=1; i<=repeat_count; i++) { if (columns > per_line) { // if not 1st run, need a newline from last line if (i!=1) dbg_printf("\n"); if (memory_dump) dbg_printf("0x" FMT_ADDRX ":", addr); else dbg_printf("0x" FMT_ADDRX " :", addr, offset); columns = 1; } /* Put a space in the middle of dump, for readability */ if ((columns - 1) == per_line / 2 && memory_dump && display_format != 'c') dbg_printf(" "); if (is_linear) { if (! bx_dbg_read_linear(dbg_cpu, addr, data_size, databuf)) return; } else { // address is already physical address BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), addr, data_size, databuf); } //FIXME HanishKVC The char display for data to be properly integrated // so that repeat_count, columns, etc. can be set or used properly. // Also for data_size of 2 and 4 how to display the individual // characters i.e in which order to be decided. switch (data_size) { case 1: data8 = databuf[0]; if (memory_dump) switch (display_format) { case 'd': dbg_printf("%03d ", data8); break; case 'u': dbg_printf("%03u ", data8); break; case 'o': dbg_printf("%03o ", data8); break; case 't': dbg_printf_binary ("%s ", data8, 8); break; case 'c': dbg_printf("%c", isprint(data8) ? data8 : '.'); break; default : dbg_printf("%02X ", data8); break; } else switch (display_format) { case 'x': dbg_printf("\t0x%02x", (unsigned) data8); break; case 'd': dbg_printf("\t%d", (int) (Bit8s) data8); break; case 'u': dbg_printf("\t%u", (unsigned) data8); break; case 'o': dbg_printf("\t%o", (unsigned) data8); break; case 't': dbg_printf_binary("\t%s", data8, 8); break; case 'c': bx_print_char(data8); break; } break; case 2: #ifdef BX_LITTLE_ENDIAN data16 = * (Bit16u *) databuf; #else data16 = (databuf[1]<<8) | databuf[0]; #endif if (memory_dump) switch (display_format) { case 'd': dbg_printf("%05d ", data16); break; case 'u': dbg_printf("%05u ", data16); break; case 'o': dbg_printf("%06o ", data16); break; case 't': dbg_printf_binary ("%s ", data16, 16); break; default : dbg_printf("%04X ", data16); break; } else switch (display_format) { case 'x': dbg_printf("\t0x%04x", (unsigned) data16); break; case 'd': dbg_printf("\t%d", (int) (Bit16s) data16); break; case 'u': dbg_printf("\t%u", (unsigned) data16); break; case 'o': dbg_printf("\t%o", (unsigned) data16); break; case 't': dbg_printf_binary("\t%s", data16, 16); break; case 'c': bx_print_char(data16>>8); bx_print_char(data16 & 0xff); break; } break; case 4: #ifdef BX_LITTLE_ENDIAN data32 = * (Bit32u *) databuf; #else data32 = (databuf[3]<<24) | (databuf[2]<<16) | (databuf[1]<<8) | databuf[0]; #endif if (memory_dump) switch (display_format) { case 'd': dbg_printf("%10d ", data32); break; case 'u': dbg_printf("%10u ", data32); break; case 'o': dbg_printf("%12o ", data32); break; case 't': dbg_printf_binary ("%s ", data32, 32); break; default : dbg_printf("%08X ", data32); break; } else switch (display_format) { case 'x': dbg_printf("\t0x%08x", (unsigned) data32); break; case 'd': dbg_printf("\t%d", (int) (Bit32s) data32); break; case 'u': dbg_printf("\t%u", (unsigned) data32); break; case 'o': dbg_printf("\t%o", (unsigned) data32); break; case 't': dbg_printf_binary("\t%s", data32, 32); break; case 'c': bx_print_char(0xff & (data32>>24)); bx_print_char(0xff & (data32>>16)); bx_print_char(0xff & (data32>> 8)); bx_print_char(0xff & (data32>> 0)); break; } break; } addr += data_size; bx_debugger.default_addr = addr; columns++; offset += data_size; } dbg_printf("\n"); } void bx_dbg_setpmem_command(bx_phy_address paddr, unsigned len, Bit32u val) { Bit8u buf[4]; switch (len) { case 1: buf[0] = (Bit8u) val; break; case 2: buf[0] = val & 0xff; val >>= 8; buf[1] = val & 0xff; break; case 4: buf[0] = val & 0xff; val >>= 8; buf[1] = val & 0xff; val >>= 8; buf[2] = val & 0xff; val >>= 8; buf[3] = val & 0xff; break; default: dbg_printf("Error: setpmem: bad length value = %u\n", len); return; } if (! BX_MEM(0)->dbg_set_mem(paddr, len, buf)) { dbg_printf("Error: setpmem: could not set memory, out of physical bounds?\n"); } } void bx_dbg_set_symbol_command(char *symbol, Bit32u val) { bx_bool is_OK = false; symbol++; // get past '$' if (!strcmp(symbol, "eip")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_EIP, val); } else if (!strcmp(symbol, "eflags")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_EFLAGS, val); } else if (!strcmp(symbol, "cs")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_CS, val); } else if (!strcmp(symbol, "ss")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_SS, val); } else if (!strcmp(symbol, "ds")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_DS, val); } else if (!strcmp(symbol, "es")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_ES, val); } else if (!strcmp(symbol, "fs")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_FS, val); } else if (!strcmp(symbol, "gs")) { is_OK = BX_CPU(dbg_cpu)->dbg_set_reg(BX_DBG_REG_GS, val); } else if (!strcmp(symbol, "cpu")) { if (val >= BX_SMP_PROCESSORS) { dbg_printf("invalid cpu id number %d\n", val); return; } char cpu_param_name[10]; sprintf(cpu_param_name, "cpu%d", val); dbg_cpu_list = (bx_list_c*) SIM->get_param(cpu_param_name, SIM->get_bochs_root()); dbg_cpu = val; return; } else if (!strcmp(symbol, "synchronous_dma")) { bx_guard.async.dma = !val; return; } else if (!strcmp(symbol, "synchronous_irq")) { bx_guard.async.irq = !val; return; } else if (!strcmp(symbol, "event_reports")) { bx_guard.report.irq = val; bx_guard.report.a20 = val; bx_guard.report.io = val; bx_guard.report.ucmem = val; bx_guard.report.dma = val; return; } else if (!strcmp(symbol, "auto_disassemble")) { bx_dbg_set_auto_disassemble(val != 0); return; } else { dbg_printf("Error: set: unrecognized symbol.\n"); return; } if (!is_OK) { dbg_printf("Error: could not set register '%s'.\n", symbol); } } void bx_dbg_query_command(const char *what) { unsigned pending; if (! strcmp(what, "pending")) { pending = BX_CPU(0)->dbg_query_pending(); if (pending & BX_DBG_PENDING_DMA) dbg_printf("pending DMA\n"); if (pending & BX_DBG_PENDING_IRQ) dbg_printf("pending IRQ\n"); if (!pending) dbg_printf("pending none\n"); dbg_printf("done\n"); } else { dbg_printf("Error: Query '%s' not understood.\n", what); } } void bx_dbg_restore_command(const char *param_name, const char *restore_path) { const char *path = (restore_path == NULL) ? "." : restore_path; dbg_printf("restoring param (%s) state from file (%s/%s)\n", param_name, path, param_name); if (! SIM->restore_bochs_param(SIM->get_bochs_root(), path, param_name)) { dbg_printf("Error: error occured during restore\n"); } else { bx_sr_after_restore_state(); } } void bx_dbg_disassemble_current(const char *format) { Bit64u addr = bx_dbg_get_laddr(bx_dbg_get_selector_value(BX_DBG_SREG_CS), BX_CPU(dbg_cpu)->get_instruction_pointer()); bx_dbg_disassemble_command(format, addr, addr); } void bx_dbg_disassemble_command(const char *format, Bit64u from, Bit64u to) { int numlines = INT_MAX; if (from > to) { int temp = from; from = to; to = temp; } if (format) { // format always begins with '/' (checked in lexer) // so we won't bother checking it here second time. numlines = atoi(format + 1); if (to == from) to = BX_MAX_BIT64U; // Disassemble just X lines } unsigned dis_size = bx_debugger.disassemble_size; if (dis_size == 0) { dis_size = 16; // until otherwise proven if (BX_CPU(dbg_cpu)->sregs[BX_SEG_REG_CS].cache.u.segment.d_b) dis_size = 32; if (BX_CPU(dbg_cpu)->get_cpu_mode() == BX_MODE_LONG_64) dis_size = 64; } do { numlines--; if (! bx_dbg_read_linear(dbg_cpu, from, 16, bx_disasm_ibuf)) break; unsigned ilen = bx_disassemble.disasm(dis_size==32, dis_size==64, (bx_address)(-1), (bx_address)(-1), bx_disasm_ibuf, bx_disasm_tbuf); char *Sym=bx_dbg_disasm_symbolic_address((Bit32u)from, 0); dbg_printf("%08x: ", (unsigned) from); dbg_printf("(%20s): ", Sym?Sym:""); dbg_printf("%-25s ; ", bx_disasm_tbuf); for (unsigned j=0; j 0); } void bx_dbg_instrument_command(const char *comm) { #if BX_INSTRUMENTATION if (!strcmp(comm, "start")) { BX_INSTR_START(); } else if (!strcmp(comm, "stop")) { BX_INSTR_STOP(); } else if (!strcmp(comm, "reset")) { BX_INSTR_RESET(dbg_cpu); } else if (!strcmp(comm, "print")) { BX_INSTR_PRINT(); } else { dbg_printf("Error: command 'instrument %s' not recognized\n", comm); bx_dbg_exit(1); } #else UNUSED(comm); dbg_printf("Error: instrumentation not enabled.\n"); #endif } void bx_dbg_doit_command(unsigned n) { // generic command to add temporary hacks to // for debugging purposes UNUSED(n); bx_dbg.interrupts = n; bx_dbg.exceptions = n; } void bx_dbg_crc_command(bx_phy_address addr1, bx_phy_address addr2) { Bit32u crc1; if (addr1 >= addr2) { dbg_printf("Error: crc32: invalid range\n"); return; } if (!BX_MEM(0)->dbg_crc32(addr1, addr2, &crc1)) { dbg_printf("Error: could not crc32 memory\n"); return; } dbg_printf("0x%lx\n", crc1); } void bx_dbg_info_dirty_command(void) { unsigned char *page_tbl = BX_MEM(0)->dbg_dirty_pages; Bit32u page_tbl_size = BX_MEM(0)->get_num_allocated_pages(); for (unsigned i=0; i> 16) & 0xffff) | ((hi << 16) & 0xff0000) | (hi & 0xff000000); Bit32u limit = (hi & 0x000f0000) | (lo & 0xffff); Bit32u segment = (lo >> 16) & 0xffff; Bit32u offset = (lo & 0xffff) | (hi & 0xffff0000); unsigned type = (hi >> 8) & 0x0f; unsigned dpl = (hi >> 13) & 0x03; unsigned s = (hi >> 12) & 0x01; unsigned d_b = (hi >> 22) & 0x01; unsigned g = (hi >> 23) & 0x01; #if 0 unsigned present = (hi >> 15) & 0x01; unsigned avl = (hi >> 20) & 0x01; unsigned base_is_jump_addr; if (s) { // either a code or a data segment. bit 11 (type file MSB) then says // 0=data segment, 1=code seg if (type&8) { dbg_printf("Segment type: Code, %s%s%s\n", (type&2)? "Execute/Read" : "Execute-Only", (type&4)? ", Conforming" : "", (type&1)? ", Accessed" : ""); dbg_printf("D flag=%d (use %d-bit addresses, %d-bit or 8-bit operands)\n", d_b, d_b? 32 : 16); } else { dbg_printf("Segment type: Data, %s%s%s\n", (type&2)? "Read/Write" : "Read-Only", (type&4)? ", Expand-down" : "", (type&1)? ", Accessed" : ""); } } else { // types from IA32-devel-guide-3, page 3-15. static char *type_names[16] = { "Reserved", "16-Bit TSS (available)", "LDT", "16-Bit TSS (Busy)", "16-Bit Call Gate", "Task Gate", "16-Bit Interrupt Gate", "16-Bit Trap Gate", "Reserved", "32-Bit TSS (Available)", "Reserved", "32-Bit TSS (Busy)", "32-Bit Call Gate", "Reserved", "32-Bit Interrupt Gate", "32-Bit Trap Gate" }; // some kind of gate? dbg_printf("System segment, type=0x%x=%s\n", type, type_names[type]); base_is_jump_addr = 1; // for call gates, print segment:offset and parameter count p.40-15 // for task gate, only present,dpl,TSS segment selector exist. p.5-13 // for interrupt gate, segment:offset,p,dpl // for trap gate, segment:offset,p,dpl } dbg_printf("DPL=descriptor privilege level=%d\n", dpl); if (base_is_jump_addr) { dbg_printf("target address=%04x:%08x\n", segment, offset); } else { dbg_printf("base address=%08x\n", base); dbg_printf("G=granularity=%d\n", g); dbg_printf("limit=0x%05x %s (see G)\n", limit, g?"4K-byte units" : "bytes"); dbg_printf("AVL=available to OS=%d\n", avl); } dbg_printf("P=present=%d\n", present); #endif /* brief output */ // 32-bit trap gate, target=0010:c0108ec4, DPL=0, present=1 // code segment, base=0000:00cfffff, length=0xffff if (s) { // either a code or a data segment. bit 11 (type file MSB) then says // 0=data segment, 1=code seg if (type&8) { dbg_printf("Code segment, linearaddr=%08x, limit=%05x %s, %s%s%s, %d-bit\n", base, limit, g ? "* 4Kbytes" : "bytes", (type&2)? "Execute/Read" : "Execute-Only", (type&4)? ", Conforming" : "", (type&1)? ", Accessed" : "", d_b ? 32 : 16); } else { dbg_printf("Data segment, linearaddr=%08x, limit=%05x %s, %s%s%s\n", base, limit, g ? "* 4Kbytes" : "bytes", (type&2)? "Read/Write" : "Read-Only", (type&4)? ", Expand-down" : "", (type&1)? ", Accessed" : ""); } } else { // types from IA32-devel-guide-3, page 3-15. static char *undef = "???"; static char *type_names[16] = { undef, "16-Bit TSS (available)", "LDT", "16-Bit TSS (Busy)", "16-Bit Call Gate", "Task Gate", "16-Bit Interrupt Gate", "16-Bit Trap Gate", undef, "32-Bit TSS (Available)", undef, "32-Bit TSS (Busy)", "32-Bit Call Gate", undef, "32-Bit Interrupt Gate", "32-Bit Trap Gate" }; dbg_printf("%s ", type_names[type]); // only print more if type is valid if (type_names[type] == undef) { dbg_printf("descriptor hi=0x%08x, lo=0x%08x", hi, lo); } else { // for call gates, print segment:offset and parameter count p.4-15 // for task gate, only present,dpl,TSS segment selector exist. p.5-13 // for interrupt gate, segment:offset,p,dpl // for trap gate, segment:offset,p,dpl // for TSS, base address and segment limit switch (type) { case BX_SYS_SEGMENT_AVAIL_286_TSS: case BX_SYS_SEGMENT_BUSY_286_TSS: case BX_SYS_SEGMENT_AVAIL_386_TSS: case BX_SYS_SEGMENT_BUSY_386_TSS: dbg_printf("at 0x%08x, length 0x%05x", base, limit); break; case BX_SYS_SEGMENT_LDT: // it's an LDT. not much to print. break; default: // task, int, trap, or call gate. dbg_printf("target=0x%04x:0x%08x, DPL=%d", segment, offset, dpl); } } dbg_printf("\n"); } } void bx_dbg_info_idt_command(unsigned from, unsigned to) { bx_dbg_global_sreg_t idtr; BX_CPU(dbg_cpu)->dbg_get_idtr(&idtr); bx_bool all = 0; if (to == (unsigned) EMPTY_ARG) { to = from; if(from == (unsigned) EMPTY_ARG) { from = 0; to = 255; all = 1; } } if (from > 255 || to > 255) { dbg_printf("IDT entry should be [0-255], 'info idt' command malformed\n"); return; } if (from > to) { unsigned temp = from; from = to; to = temp; } dbg_printf("Interrupt Descriptor Table (base=0x" FMT_ADDRX ", limit=%d):\n", idtr.base, idtr.limit); for (unsigned n = from; n<=to; n++) { Bit8u entry[8]; if (8*n + 7 > idtr.limit) break; if (bx_dbg_read_linear(dbg_cpu, idtr.base + 8*n, 8, entry)) { dbg_printf("IDT[0x%02x]=", n); bx_dbg_print_descriptor(entry, 0); } else { dbg_printf("error: IDTR+8*%d points to invalid linear address 0x" FMT_ADDRX "\n", n, idtr.base); } } if (all) dbg_printf("You can list individual entries with 'info idt [NUM]' or groups with 'info idt [NUM] [NUM]'\n"); } void bx_dbg_info_gdt_command(unsigned from, unsigned to) { bx_dbg_global_sreg_t gdtr; BX_CPU(dbg_cpu)->dbg_get_gdtr(&gdtr); bx_bool all = 0; if (to == (unsigned) EMPTY_ARG) { to = from; if(from == (unsigned) EMPTY_ARG) { from = 0; to = 0xffff; all = 1; } } if (from > 0xffff || to > 0xffff) { dbg_printf("IDT entry should be [0-65535], 'info gdt' command malformed\n"); return; } if (from > to) { unsigned temp = from; from = to; to = temp; } dbg_printf("Global Descriptor Table (base=0x" FMT_ADDRX ", limit=%d):\n", gdtr.base, gdtr.limit); for (unsigned n = from; n<=to; n++) { Bit8u entry[8]; if (8*n + 7 > gdtr.limit) break; if (bx_dbg_read_linear(dbg_cpu, gdtr.base + 8*n, 8, entry)) { dbg_printf("GDT[0x%02x]=", n); bx_dbg_print_descriptor(entry, 0); } else { dbg_printf("error: GDTR+8*%d points to invalid linear address 0x " FMT_ADDRX "\n", n, gdtr.base); } } if (all) dbg_printf("You can list individual entries with 'info gdt [NUM]' or groups with 'info gdt [NUM] [NUM]'\n"); } void bx_dbg_info_ldt_command(unsigned from, unsigned to) { dbg_printf("Local Descriptor Table output not implemented\n"); } /*form RB list*/ static char* bx_dbg_ivt_desc(int intnum) { char* ret = ""; switch (intnum) { case 0x00 : ret = "DIVIDE ERROR" ; break; case 0x01 : ret = "SINGLE STEP" ; break; case 0x02 : ret = "NON-MASKABLE INTERRUPT" ; break; case 0x03 : ret = "BREAKPOINT" ; break; case 0x04 : ret = "INT0 DETECTED OVERFLOW" ; break; case 0x05 : ret = "BOUND RANGE EXCEED" ; break; case 0x06 : ret = "INVALID OPCODE" ; break; case 0x07 : ret = "PROCESSOR EXTENSION NOT AVAILABLE" ; break; case 0x08 : ret = "IRQ0 - SYSTEM TIMER" ; break; case 0x09 : ret = "IRQ1 - KEYBOARD DATA READY" ; break; case 0x0a : ret = "IRQ2 - LPT2" ; break; case 0x0b : ret = "IRQ3 - COM2" ; break; case 0x0c : ret = "IRQ4 - COM1" ; break; case 0x0d : ret = "IRQ5 - FIXED DISK" ; break; case 0x0e : ret = "IRQ6 - DISKETTE CONTROLLER" ; break; case 0x0f : ret = "IRQ7 - PARALLEL PRINTER" ; break; case 0x10 : ret = "VIDEO" ; break; case 0x11 : ret = "GET EQUIPMENT LIST" ; break; case 0x12 : ret = "GET MEMORY SIZE" ; break; case 0x13 : ret = "DISK" ; break; case 0x14 : ret = "SERIAL" ; break; case 0x15 : ret = "SYSTEM" ; break; case 0x16 : ret = "KEYBOARD" ; break; case 0x17 : ret = "PRINTER" ; break; case 0x18 : ret = "CASETTE BASIC" ; break; case 0x19 : ret = "BOOTSTRAP LOADER" ; break; case 0x1a : ret = "TIME" ; break; case 0x1b : ret = "KEYBOARD - CONTROL-BREAK HANDLER" ; break; case 0x1c : ret = "TIME - SYSTEM TIMER TICK" ; break; case 0x1d : ret = "SYSTEM DATA - VIDEO PARAMETER TABLES"; break; case 0x1e : ret = "SYSTEM DATA - DISKETTE PARAMETERS" ; break; case 0x1f : ret = "SYSTEM DATA - 8x8 GRAPHICS FONT" ; break; case 0x70 : ret = "IRQ8 - CMOS REAL-TIME CLOCK" ; break; case 0x71 : ret = "IRQ9 - REDIRECTED TO INT 0A BY BIOS" ; break; case 0x72 : ret = "IRQ10 - RESERVED" ; break; case 0x73 : ret = "IRQ11 - RESERVED" ; break; case 0x74 : ret = "IRQ12 - POINTING DEVICE" ; break; case 0x75 : ret = "IRQ13 - MATH COPROCESSOR EXCEPTION" ; break; case 0x76 : ret = "IRQ14 - HARD DISK CONTROLLER OPERATION COMPLETE"; break; case 0x77 : ret = "IRQ15 - SECONDARY IDE CONTROLLER OPERATION COMPLETE"; break; default : ret = "" ; break; } return ret; } void bx_dbg_info_ivt_command(unsigned from, unsigned to) { unsigned char buff[4]; Bit16u seg; Bit16u off; bx_bool all = 0; bx_dbg_global_sreg_t idtr; BX_CPU(dbg_cpu)->dbg_get_idtr(&idtr); if (! BX_CPU(dbg_cpu)->protected_mode()) { if (to == (unsigned) EMPTY_ARG) { to = from; if(from == (unsigned) EMPTY_ARG) { from = 0; to = 255; all = 1; } } if (from > 255 || to > 255) { dbg_printf("IVT entry should be [0-255], 'info ivt' command malformed\n"); return; } if (from > to) { unsigned temp = from; from = to; to = temp; } for (unsigned i = from; i <= to; i++) { BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), idtr.base + i * 4, sizeof(buff), buff); #ifdef BX_LITTLE_ENDIAN seg = *(Bit16u*)(&buff[2]); off = *(Bit16u*)(&buff[0]); #else seg = (buff[3] << 8) | buff[2]; off = (buff[1] << 8) | buff[0]; #endif BX_MEM(0)->dbg_fetch_mem(BX_CPU(dbg_cpu), ((seg << 4) + off), sizeof(buff), buff); dbg_printf("INT# %02x > %04X:%04X (" FMT_ADDRX ") %s%s\n", i, seg, off, ((seg << 4) + off), bx_dbg_ivt_desc(i), (buff[0] == 0xcf) ? " ; dummy iret" : ""); } if (all) dbg_printf("You can list individual entries with 'info ivt [NUM]' or groups with 'info ivt [NUM] [NUM]'\n"); } else dbg_printf("cpu in protected mode, use info idt\n"); } static void bx_dbg_print_tss(unsigned char *tss, int len) { if (len<104) { dbg_printf("Invalid tss length (limit must be greater then 103)\n"); return; } dbg_printf("ss:esp(0): 0x%04x:0x%08x\n", *(Bit16u*)(tss+8), *(Bit32u*)(tss+4)); dbg_printf("ss:esp(1): 0x%04x:0x%08x\n", *(Bit16u*)(tss+0x10), *(Bit32u*)(tss+0xc)); dbg_printf("ss:esp(2): 0x%04x:0x%08x\n", *(Bit16u*)(tss+0x18), *(Bit32u*)(tss+0x14)); dbg_printf("cr3: 0x%08x\n", *(Bit32u*)(tss+0x1c)); dbg_printf("eip: 0x%08x\n", *(Bit32u*)(tss+0x20)); dbg_printf("eflags: 0x%08x\n", *(Bit32u*)(tss+0x24)); dbg_printf("cs: 0x%04x ds: 0x%04x ss: 0x%04x\n", *(Bit16u*)(tss+76), *(Bit16u*)(tss+84), *(Bit16u*)(tss+80)); dbg_printf("es: 0x%04x fs: 0x%04x gs: 0x%04x\n", *(Bit16u*)(tss+72), *(Bit16u*)(tss+88), *(Bit16u*)(tss+92)); dbg_printf("eax: 0x%08x ebx: 0x%08x ecx: 0x%08x edx: 0x%08x\n", *(Bit32u*)(tss+0x28), *(Bit32u*)(tss+0x34), *(Bit32u*)(tss+0x2c), *(Bit32u*)(tss+0x30)); dbg_printf("esi: 0x%08x edi: 0x%08x ebp: 0x%08x esp: 0x%08x\n", *(Bit32u*)(tss+0x40), *(Bit32u*)(tss+0x44), *(Bit32u*)(tss+0x3c), *(Bit32u*)(tss+0x38)); dbg_printf("ldt: 0x%04x\n", *(Bit16u*)(tss+0x60)); dbg_printf("i/o map: 0x%04x\n", *(Bit16u*)(tss+0x66)); } void bx_dbg_info_tss_command(void) { bx_dbg_sreg_t tr; BX_CPU(dbg_cpu)->dbg_get_tr(&tr); Bit32u laddr = (tr.des_l>>16) | ((tr.des_h<<16)&0x00ff0000) | (tr.des_h & 0xff000000); Bit32u len = (tr.des_l & 0xffff) + 1; dbg_printf("tr:s=0x%x, base=0x%x, valid=%u\n", (unsigned) tr.sel, laddr, (unsigned) tr.valid); bx_phy_address paddr = 0; BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(laddr, &paddr); bx_dbg_print_tss(BX_MEM(0)->vector+paddr, len); } /* * this function implements the info ne2k commands in the debugger * info ne2k - shows all registers * info ne2k page N - shows all registers in a page * info ne2k page N reg M - shows just one register */ void bx_dbg_info_ne2k(int page, int reg) { #if BX_SUPPORT_NE2K DEV_ne2k_print_info(stderr, page, reg, 0); #else dbg_printf("NE2000 support is not compiled in\n"); #endif } /* * this implements the info pic command in the debugger. * info pic - shows pic registers */ void bx_dbg_info_pic() { DEV_pic_show_pic_state(); } /* * this implements the info vga command in the debugger. * info vga - shows vga registers */ void bx_dbg_info_vga() { DEV_vga_dump_status(); } /* * this implements the info pci command in the debugger. * info pci - shows i440fx state */ void bx_dbg_info_pci() { #if BX_SUPPORT_PCI if (SIM->get_param_bool(BXPN_I440FX_SUPPORT)->get()) { DEV_pci_print_i440fx_state(); } else { dbg_printf("PCI support is disabled in .bochsrc\n"); } #else dbg_printf("PCI support is not compiled in\n"); #endif } // // Reports from various events // void bx_dbg_iac_report(unsigned vector, unsigned irq) { if (bx_guard.report.irq) { dbg_printf("event at t=" FMT_LL "d IRQ irq=%u vec=%x\n", bx_pc_system.time_ticks(), irq, vector); } } void bx_dbg_a20_report(unsigned val) { if (bx_guard.report.a20) { dbg_printf("event at t=" FMT_LL "d A20 val=%u\n", bx_pc_system.time_ticks(), val); } } void bx_dbg_io_report(Bit32u port, unsigned size, unsigned op, Bit32u val) { if (bx_guard.report.io) { dbg_printf("event at t=" FMT_LL "d IO addr=0x%x size=%u op=%s val=0x%x\n", bx_pc_system.time_ticks(), port, size, (op==BX_READ) ? "read" : "write", (unsigned) val); } } void bx_dbg_ucmem_report(bx_address addr, unsigned size, unsigned op, Bit32u val) { if (bx_guard.report.ucmem) { dbg_printf("event at t=" FMT_LL "d UCmem addr=0x" FMT_ADDRX " size=%u op=%s val=0x%x\n", bx_pc_system.time_ticks(), addr, size, (op==BX_READ) ? "read" : "write", (unsigned) val); } } void bx_dbg_dma_report(bx_phy_address addr, unsigned len, unsigned what, Bit32u val) { if (bx_dbg_batch_dma.this_many == 0) { dbg_printf("%s: DMA batch this_many=0.\n", argv0); bx_dbg_exit(1); } // if Q is full, post events (and flush) if (bx_dbg_batch_dma.Qsize >= bx_dbg_batch_dma.this_many) { dbg_printf("%s: DMA batch Q was not flushed.\n", argv0); bx_dbg_exit(1); } // if Q already has MAX elements in it if (bx_dbg_batch_dma.Qsize >= BX_BATCH_DMA_BUFSIZE) { dbg_printf("%s: DMA batch buffer overrun.\n", argv0); bx_dbg_exit(1); } bx_dbg_batch_dma.Qsize++; bx_dbg_batch_dma.Q[bx_dbg_batch_dma.Qsize-1].addr = addr; bx_dbg_batch_dma.Q[bx_dbg_batch_dma.Qsize-1].len = len; bx_dbg_batch_dma.Q[bx_dbg_batch_dma.Qsize-1].what = what; bx_dbg_batch_dma.Q[bx_dbg_batch_dma.Qsize-1].val = val; bx_dbg_batch_dma.Q[bx_dbg_batch_dma.Qsize-1].time = bx_pc_system.time_ticks(); // if Q is full, post events (and flush) if (bx_dbg_batch_dma.Qsize >= bx_dbg_batch_dma.this_many) bx_dbg_post_dma_reports(); } void bx_dbg_post_dma_reports(void) { unsigned i; unsigned addr, len, what, val; unsigned last_addr, last_len, last_what; unsigned print_header; unsigned first_iteration; if (bx_guard.report.dma) { if (bx_dbg_batch_dma.Qsize == 0) return; // nothing batched to print // compress output so all contiguous DMA ops of the same type and size // are printed on the same line last_addr = bx_dbg_batch_dma.Q[0].addr; last_len = bx_dbg_batch_dma.Q[0].len; last_what = bx_dbg_batch_dma.Q[0].what; first_iteration = 1; for (i=0; icr0.get_PG()) { printf("paging off\n"); return; } printf("cr3: 0x08x\n", BX_CPU(dbg_cpu)->cr3); lin = 0; phy = 0; start_lin = 1; start_phy = 2; while(1) { valid = BX_CPU(dbg_cpu)->dbg_xlate_linear2phy(lin, &phy); if(valid) { if((lin - start_lin) != (phy - start_phy)) { if(start_lin != 1) dbg_printf("0x%08x-0x%08x -> 0x%08x-0x%08x\n", start_lin, lin - 1, start_phy, start_phy + (lin-1-start_lin)); start_lin = lin; start_phy = phy; } } else { if(start_lin != 1) dbg_printf("0x%08x-0x%08x -> 0x%08x-0x%08x\n", start_lin, lin - 1, start_phy, start_phy + (lin-1-start_lin)); start_lin = 1; start_phy = 2; } if(lin == 0xfffff000) break; lin += 0x1000; } if(start_lin != 1) dbg_printf("0x%08x-0x%08x -> 0x%08x-0x%08x\n", start_lin, 0xffffffff, start_phy, start_phy + (0xffffffff-start_lin)); } void bx_dbg_print_help(void) { dbg_printf("h|help - show list of debugger commands\n"); dbg_printf("h|help command - show short command description\n"); dbg_printf("-*- Debugger control -*-\n"); dbg_printf(" help, q|quit|exit, set, instrument, show, trace, trace-reg,\n"); dbg_printf(" record, playback, load-symbols, slist\n"); dbg_printf("-*- Execution control -*-\n"); dbg_printf(" c|cont|continue, s|step|stepi, p|n|next, modebp\n"); dbg_printf("-*- Breakpoint management -*-\n"); dbg_printf(" vb|vbreak, lb|lbreak, pb|pbreak|b|break, sb, sba, blist,\n"); dbg_printf(" bpe, bpd, d|del|delete\n"); dbg_printf("-*- CPU and memory contents -*-\n"); dbg_printf(" x, xp, u|disasm|disassemble, r|reg|regs|registers, setpmem, crc, info,\n"); dbg_printf(" page, set, ptime, print-stack, watch, unwatch, ?|calc\n"); dbg_printf("-*- Working with bochs param tree -*-\n"); dbg_printf(" show \"param\", restore\n"); } void bx_dbg_calc_command(Bit64u value) { dbg_printf("0x" FMT_LL "x " FMT_LL "d\n", value, value); } Bit8u bx_dbg_get_reg8l_value(unsigned reg) { if (reg < BX_GENERAL_REGISTERS) return BX_CPU(dbg_cpu)->get_reg8l(reg); dbg_printf("Unknown 8BL register [%d] !!!\n", reg); return 0; } Bit8u bx_dbg_get_reg8h_value(unsigned reg) { if (reg < BX_GENERAL_REGISTERS) return BX_CPU(dbg_cpu)->get_reg8h(reg); dbg_printf("Unknown 8BH register [%d] !!!\n", reg); return 0; } Bit16u bx_dbg_get_reg16_value(unsigned reg) { if (reg < BX_GENERAL_REGISTERS) return BX_CPU(dbg_cpu)->get_reg16(reg); dbg_printf("Unknown 16B register [%d] !!!\n", reg); return 0; } Bit32u bx_dbg_get_reg32_value(unsigned reg) { if (reg < BX_GENERAL_REGISTERS) return BX_CPU(dbg_cpu)->get_reg32(reg); dbg_printf("Unknown 32B register [%d] !!!\n", reg); return 0; } Bit64u bx_dbg_get_reg64_value(unsigned reg) { #if BX_SUPPORT_X86_64 if (reg < BX_GENERAL_REGISTERS) return BX_CPU(dbg_cpu)->get_reg64(reg); #endif dbg_printf("Unknown 64B register [%d] !!!\n", reg); return 0; } void bx_dbg_set_reg8l_value(unsigned reg, Bit8u value) { if (reg < BX_GENERAL_REGISTERS) BX_CPU(dbg_cpu)->set_reg8l(reg, value); else dbg_printf("Unknown 8BL register [%d] !!!\n", reg); } void bx_dbg_set_reg8h_value(unsigned reg, Bit8u value) { if (reg < BX_GENERAL_REGISTERS) BX_CPU(dbg_cpu)->set_reg8h(reg, value); else dbg_printf("Unknown 8BH register [%d] !!!\n", reg); } void bx_dbg_set_reg16_value(unsigned reg, Bit16u value) { if (reg < BX_GENERAL_REGISTERS) BX_CPU(dbg_cpu)->set_reg16(reg, value); else dbg_printf("Unknown 16B register [%d] !!!\n", reg); } void bx_dbg_set_reg32_value(unsigned reg, Bit32u value) { if (reg < BX_GENERAL_REGISTERS) BX_CPU(dbg_cpu)->set_reg32(reg, value); else dbg_printf("Unknown 32B register [%d] !!!\n", reg); } void bx_dbg_set_reg64_value(unsigned reg, Bit64u value) { #if BX_SUPPORT_X86_64 if (reg < BX_GENERAL_REGISTERS) BX_CPU(dbg_cpu)->set_reg64(reg, value); else #endif dbg_printf("Unknown 64B register [%d] !!!\n", reg); } Bit16u bx_dbg_get_selector_value(unsigned int seg_no) { bx_dbg_sreg_t sreg; if (seg_no > 5) { dbg_printf("Error: seg_no out of bounds\n"); return 0; } BX_CPU(dbg_cpu)->dbg_get_sreg(&sreg, seg_no); if (!sreg.valid) { dbg_printf("Error: segment valid bit cleared\n"); return 0; } return sreg.sel; } Bit16u bx_dbg_get_ip(void) { return BX_CPU(dbg_cpu)->get_ip(); } Bit32u bx_dbg_get_eip(void) { return BX_CPU(dbg_cpu)->get_eip(); } bx_address bx_dbg_get_instruction_pointer(void) { return BX_CPU(dbg_cpu)->get_instruction_pointer(); } Bit32u bx_dbg_get_laddr(Bit16u sel, Bit32u ofs) { if (BX_CPU(dbg_cpu)->protected_mode()) { bx_descriptor_t descriptor; bx_selector_t selector; Bit32u dword1, dword2; /* if selector is NULL, error */ if ((sel & 0xfffc) == 0) { dbg_printf("ERROR: Dereferencing a NULL selector!\n"); return 0; } /* parse fields in selector */ BX_CPU(dbg_cpu)->parse_selector(sel, &selector); Bit32u desc_base; if (selector.ti) { // LDT if (((Bit32u)selector.index*8 + 7) > BX_CPU(dbg_cpu)->ldtr.cache.u.system.limit) { dbg_printf("ERROR: selector (%04x) > GDT size limit\n", selector.index*8); return 0; } desc_base = BX_CPU(dbg_cpu)->ldtr.cache.u.system.base; } else { // GDT if (((Bit32u)selector.index*8 + 7) > BX_CPU(dbg_cpu)->gdtr.limit) { dbg_printf("ERROR: selector (%04x) > GDT size limit\n", selector.index*8); return 0; } desc_base = BX_CPU(dbg_cpu)->gdtr.base; } BX_CPU(dbg_cpu)->access_linear(desc_base + selector.index * 8, 4, 0, BX_READ, &dword1); BX_CPU(dbg_cpu)->access_linear(desc_base + selector.index * 8 + 4, 4, 0, BX_READ, &dword2); memset (&descriptor, 0, sizeof (descriptor)); BX_CPU(dbg_cpu)->parse_descriptor(dword1, dword2, &descriptor); if (!descriptor.segment) { dbg_printf("ERROR: selector %04x points to a system descriptor and is not supported!\n", sel); return 0; } /* #NP(selector) if descriptor is not present */ if (descriptor.p==0) { dbg_printf("ERROR: descriptor %04x not present!\n", sel); return 0; } Bit32u lowaddr, highaddr; // expand-down if (IS_DATA_SEGMENT(descriptor.type) && IS_DATA_SEGMENT_EXPAND_DOWN(descriptor.type)) { lowaddr = descriptor.u.segment.limit_scaled; highaddr = descriptor.u.segment.g ? 0xffffffff : 0xffff; } else { lowaddr = 0; highaddr = descriptor.u.segment.limit_scaled; } if ((ofs < lowaddr) || (ofs > highaddr)) { dbg_printf("WARNING: Offset %08X is out of selector %04x limit (%08x...%08x)!\n", ofs, sel, lowaddr, highaddr); } return descriptor.u.segment.base + ofs; } else { return sel * 16 + ofs; } } void bx_dbg_step_over_command() { bx_address Laddr = BX_CPU(dbg_cpu)->guard_found.laddr; if (! bx_dbg_read_linear(dbg_cpu, Laddr, 16, bx_disasm_ibuf)) { return; } x86_insn insn = bx_disassemble.decode(BX_CPU(dbg_cpu)->guard_found.is_32bit_code, BX_CPU(dbg_cpu)->guard_found.is_64bit_code, BX_CPU(dbg_cpu)->get_segment_base(BX_SEG_REG_CS), BX_CPU(dbg_cpu)->guard_found.eip, bx_disasm_ibuf, bx_disasm_tbuf); unsigned b1 = insn.b1; switch(b1) { // Jcc short case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: // Jcc near case 0x180: case 0x181: case 0x182: case 0x183: case 0x184: case 0x185: case 0x186: case 0x187: case 0x188: case 0x189: case 0x18A: case 0x18B: case 0x18C: case 0x18D: case 0x18E: case 0x18F: // jcxz case 0xE3: // retn n case 0xC2: // retn case 0xC3: // retf n case 0xCA: // retf case 0xCB: // iret case 0xCF: // jmp near case 0xE9: // jmp far case 0xEA: // jmp short case 0xEB: bx_dbg_stepN_command(1); return; // jmp absolute indirect case 0xFF: switch (insn.nnn) { // near case 4: // far case 5: bx_dbg_stepN_command (1); return; } } // calls, ints, loops and so on int BpId = bx_dbg_lbreakpoint_command(bkStepOver, Laddr + insn.ilen); if (BpId == -1) { dbg_printf("bx_dbg_step_over_command:: Failed to set lbreakpoint !\n"); return; } bx_dbg_continue_command(); if (bx_dbg_del_lbreak (BpId)) bx_dbg_breakpoint_changed(); } #endif /* if BX_DEBUGGER */