radare2/libr/core/cmd_debug.c

/* radare - LGPL - Copyright 2009-2014 - pancake */

static int checkbpcallback(RCore *core);

static void cmd_debug_cont_syscall (RCore *core, const char *_str) {
	// TODO : handle more than one stopping syscall
	int i, *syscalls = NULL;
	int count = 0;
	if (_str && *_str) {
		char *str = strdup (_str);
		count = r_str_word_set0 (str);
		syscalls = calloc (sizeof (int), count);
		for (i=0; i<count; i++) {
			const char *sysnumstr = r_str_word_get0 (str, i);
			int sig = (int)r_num_math (core->num, sysnumstr);
			if (sig == -1) { // trace ALL syscalls
				syscalls[i] = -1;
			} else
			if (sig == 0) {
				sig = r_syscall_get_num (core->anal->syscall, sysnumstr);
				if (sig == -1) {
					eprintf ("Unknown syscall number\n");
					free (str);
					free (syscalls);
					return;
				}
				syscalls[i] = sig;
			}
		}
		eprintf ("Running child until syscalls:");
		for (i=0; i<count; i++)
			eprintf ("%d ", syscalls[i]);
		eprintf ("\n");
		free (str);
	} else {
		eprintf ("Running child until next syscall\n");
	}
	r_reg_arena_swap (core->dbg->reg, R_TRUE);
	r_debug_continue_syscalls (core->dbg, syscalls, count);
	checkbpcallback (core);
	free (syscalls);
}

static void dot_r_graph_traverse(RCore *core, RGraph *t) {
	RGraphNode *n, *n2;
	RListIter *iter, *iter2;
	const char *gfont = r_config_get (core->config, "graph.font");
	r_cons_printf ("digraph code {\n"
		"graph [bgcolor=white];\n"
		"    node [color=lightgray, style=filled"
		" shape=box fontname=\"%s\" fontsize=\"8\"];\n", gfont);
	r_list_foreach (t->nodes, iter, n) {
		r_cons_printf ("\"0x%08"PFMT64x"\" [URL=\"0x%08"PFMT64x
			"\" color=\"lightgray\" label=\"0x%08"PFMT64x
			" (%d)\"]\n", n->addr, n->addr, n->addr, n->refs);
		r_list_foreach (n->children, iter2, n2) {
			r_cons_printf ("\"0x%08"PFMT64x"\" -> \"0x%08"PFMT64x
				"\" [color=\"red\"];\n", n->addr, n2->addr);
		}
	}
	r_cons_printf ("}\n");
}

static int checkbpcallback(RCore *core) ;
static int step_until(RCore *core, ut64 addr) {
	ut64 off = r_debug_reg_get (core->dbg, "pc");
	if (off == 0LL) {
		eprintf ("Cannot 'drn pc'\n");
		return R_FALSE;
	}
	if (addr == 0LL) {
		eprintf ("Cannot continue until address 0\n");
		return R_FALSE;
	}
	do {
		r_debug_step (core->dbg, 1);
		if (checkbpcallback (core)) {
			eprintf ("Interrupted by a breakpoint\n");
			break;
		}
		off = r_debug_reg_get (core->dbg, "pc");
		// check breakpoint here
	} while (off != addr);
	return R_TRUE;
}

static int step_until_esil(RCore *core, const char *esilstr) {
	if (!core || !esilstr || !core->dbg || !core->dbg->anal \
			|| !core->dbg->anal->esil) {
		eprintf ("Not initialized %p. Run 'aei' first.\n", core->anal->esil);
		return R_FALSE;
	}
	for (;;) {
		r_debug_step (core->dbg, 1);
		r_debug_reg_sync (core->dbg, -1, 0);
		if (checkbpcallback (core)) {
			eprintf ("Interrupted by a breakpoint\n");
			break;
		}
		if (r_anal_esil_condition (core->anal->esil, esilstr)) {
			eprintf ("ESIL BREAK!\n");
			break;
		}
	}
	return R_TRUE;
}

/* until end of frame */
static int step_until_eof(RCore *core) {
	ut64 off, now = r_debug_reg_get (core->dbg, "sp");
	do {
		if (!r_debug_step (core->dbg, 1))
			break;
		if (checkbpcallback (core)) {
			eprintf ("Interrupted by a breakpoint\n");
			break;
		}
		off = r_debug_reg_get (core->dbg, "sp");
		// check breakpoint here
	} while (off <= now);
	return R_TRUE;
}

static int step_line(RCore *core, int times) {
	char file[512], file2[512];
	int find_meta, line = -1, line2 = -1;
	char *tmp_ptr = NULL;
	ut64 off = r_debug_reg_get (core->dbg, "pc");
	if (off == 0LL) {
		eprintf ("Cannot 'drn pc'\n");
		return R_FALSE;
	}
	file[0] = 0;
	file2[0] = 0;
	if (r_bin_addr2line (core->bin, off, file, sizeof (file), &line)) {
		char* ptr = r_file_slurp_line (file, line, 0);
		eprintf ("--> 0x%08"PFMT64x" %s : %d\n", off, file, line);
		eprintf ("--> %s\n", ptr);
		find_meta = R_FALSE;
		free (ptr);
	} else {
		eprintf ("--> Stepping until dwarf line\n");
		find_meta = R_TRUE;
	}
	do {
		r_debug_step (core->dbg, 1);
		if (checkbpcallback (core)) {
			eprintf ("Interrupted by a breakpoint\n");
			break;
		}
		off = r_debug_reg_get (core->dbg, "pc");
		if (!r_bin_addr2line (core->bin, off, file2, sizeof (file2), &line2)) {
			if (find_meta)
				continue;
			eprintf ("Cannot retrieve dwarf info at 0x%08"PFMT64x"\n", off);
			return R_FALSE;
		}
	} while (!strcmp (file, file2) && line == line2);

	eprintf ("--> 0x%08"PFMT64x" %s : %d\n", off, file2, line2);
	tmp_ptr = r_file_slurp_line (file2, line2, 0);
	eprintf ("--> %s\n", tmp_ptr);
	free (tmp_ptr);

	return R_TRUE;
}

static void cmd_debug_pid(RCore *core, const char *input) {
	const char *ptr;
	int pid, sig;
	switch (input[1]) {
	case 'k':
		/* stop, print, pass -- just use flags*/
		/* XXX: not for threads? signal is for a whole process!! */
		/* XXX: but we want fine-grained access to process resources */
		pid = atoi (input+2);
		ptr = strchr (input, ' ');
		sig = ptr? atoi (ptr+1): 0;
		if (pid > 0) {
			eprintf ("Sending signal '%d' to pid '%d'\n", sig, pid);
			r_debug_kill (core->dbg, 0, R_FALSE, sig);
		} else eprintf ("cmd_debug_pid: Invalid arguments (%s)\n", input);
		break;
	case 'n':
		eprintf ("TODO: debug_fork: %d\n", r_debug_child_fork (core->dbg));
		break;
	case 't':
		switch (input[2]) {
		case 'n':
			eprintf ("TODO: debug_clone: %d\n", r_debug_child_clone (core->dbg));
			break;
		case '=':
		case ' ':
			r_debug_select (core->dbg, core->dbg->pid,
				(int) r_num_math (core->num, input+3));
			break;
		default:
			r_debug_thread_list (core->dbg, core->dbg->pid);
			break;
		}
		break;
	case 'a':
		if (input[2]) {
			r_debug_attach (core->dbg, (int) r_num_math (
				core->num, input+2));
		} else r_debug_attach (core->dbg, core->file->desc->fd);
		r_debug_select (core->dbg, core->dbg->pid, core->dbg->tid);
		r_config_set_i (core->config, "dbg.swstep",
			(core->dbg->h && !core->dbg->h->canstep));
		break;
	case 'f':
		r_debug_select (core->dbg, core->file->desc->fd, core->dbg->tid);
		break;
	case '=':
		r_debug_select (core->dbg,
			(int) r_num_math (core->num, input+2), core->dbg->tid);
		break;
	case '*':
		r_debug_pid_list (core->dbg, 0, 0);
		break;
	case 'j':
		r_debug_pid_list (core->dbg, core->dbg->pid, 'j');
		break;
	case 'e':
		{
			int pid = (input[2] == ' ')? atoi(input+2): core->dbg->pid;
			char *exe = r_sys_pid_to_path (pid);
			if (exe) {
				r_cons_printf ("%s\n", exe);
				free (exe);
			}
		}
		break;
	case ' ':
		r_debug_pid_list (core->dbg,
			(int) R_MAX (0, (int)r_num_math (core->num, input+2)), 0);
		break;
	case '?': {
			const char* help_msg[] = {
				"Usage:", "dp", " # Process commands",
				"dp", "", "List current pid and childrens",
				"dp", " <pid>", "List children of pid",
				"dp*", "", "List all attachable pids",
				"dp=", "<pid>", "Select pid",
				"dpa", " <pid>", "Attach and select pid",
				"dpe", "", "Show path to executable",
				"dpf", "", "Attach to pid like file fd // HACK",
				"dpk", " <pid> <signal>", "Send signal to process",
				"dpn", "", "Create new process (fork)",
				"dpnt", "", "Create new thread (clone)",
				"dpt", "", "List threads of current pid",
				"dpt", " <pid>", "List threads of process",
				"dpt=", "<thread>", "Attach to thread",
				NULL};
			r_core_cmd_help (core, help_msg);
		}
		break;
	default:
		eprintf ("Selected: %d %d\n", core->dbg->pid, core->dbg->tid);
		r_debug_pid_list (core->dbg, core->dbg->pid, 0);
		break;
	}
}

static void cmd_debug_backtrace (RCore *core, const char *input) {
	RAnalOp analop;
	ut64 addr, len = r_num_math (core->num, input);
	if (len == 0) {
		r_bp_traptrace_list (core->dbg->bp);
	} else {
		ut64 oaddr = 0LL;
		eprintf ("Trap tracing 0x%08"PFMT64x"-0x%08"PFMT64x"\n",
			core->offset, core->offset+len);
		r_reg_arena_swap (core->dbg->reg, R_TRUE);
		r_bp_traptrace_reset (core->dbg->bp, R_TRUE);
		r_bp_traptrace_add (core->dbg->bp, core->offset, core->offset+len);
		r_bp_traptrace_enable (core->dbg->bp, R_TRUE);
		do {
			ut8 buf[32];
			r_debug_continue (core->dbg);
			if (checkbpcallback (core)) {
				eprintf ("Interrupted by breakpoint\n");
				break;
			}
			addr = r_debug_reg_get (core->dbg, "pc");
			if (addr == 0LL) {
				eprintf ("pc=0\n");
				break;
			}
			if (addr == oaddr) {
				eprintf ("pc=opc\n");
				break;
			}
			oaddr = addr;
			/* XXX Bottleneck..we need to reuse the bytes read by traptrace */
			// XXX Do asm.arch should define the max size of opcode?
			r_core_read_at (core, addr, buf, 32); // XXX longer opcodes?
			r_anal_op (core->anal, &analop, addr, buf, sizeof (buf));
		} while (r_bp_traptrace_at (core->dbg->bp, addr, analop.size));
		r_bp_traptrace_enable (core->dbg->bp, R_FALSE);
	}
}

static int cmd_debug_map(RCore *core, const char *input) {
	char file[128];
	RListIter *iter;
	RDebugMap *map;
	ut64 addr = core->offset;

	switch (input[0]) {
	case '?': {
			const char* help_msg[] = {
			"Usage:", "dm", " # Memory maps commands",
			"dm", "", "List memory maps of target process",
			"dm", " <address> <size>", "Allocate <size> bytes at <address> (anywhere if address is -1) in child process",
			"dm*", "", "List memmaps in radare commands",
			"dm-", "<address>", "Deallocate memory map of <address>",
			"dmd", " [file]", "Dump current debug map region to a file (from-to.dmp) (see Sd)",
			"dmi", " [addr|libname] [symname]", "List symbols of target lib",
			"dmi*", " [addr|libname] [symname]", "List symbols of target lib in radare commands",
			"dmj", "", "List memmaps in JSON format",
			"dml", " <file>", "Load contents of file into the current map region (see Sl)",
			"dmp", " <address> <size> <perms>", "Change page at <address> with <size>, protection <perms> (rwx)",
			//"dm, " rw- esp 9K", "set 9KB of the stack as read+write (no exec)",
			"TODO:", "", "map files in process memory. (dmf file @ [addr])",
			NULL};
			r_core_cmd_help (core, help_msg);
		}
		break;
	case 'p':
		if (input[1] == ' ') {
			int perms;
			char *p, *q;
			ut64 size, addr;
			p = strchr (input+2, ' ');
			if (p) {
				*p++ = 0;
				q = strchr (p, ' ');
				if (q) {
					*q++ = 0;
					addr = r_num_math (core->num, input+2);
					size = r_num_math (core->num, p);
					perms = r_str_rwx (q);
					eprintf ("(%s)(%s)(%s)\n", input+2, p, q);
					eprintf ("0x%08"PFMT64x" %d %o\n", addr, (int) size, perms);
					r_debug_map_protect (core->dbg, addr, size, perms);
				} else eprintf ("See dm?\n");
			} else eprintf ("See dm?\n");
		} else eprintf ("See dm?\n");
		break;
	case 'd':
		r_debug_map_sync (core->dbg); // update process memory maps
		r_list_foreach (core->dbg->maps, iter, map) {
			if (addr >= map->addr && addr < map->addr_end) {
				ut8 *buf = malloc (map->size);
#warning TODO: use mmap here. we need a portable implementation
				if (!buf) {
					eprintf ("Cannot allocate 0x%08"PFMT64x" bytes\n", map->size);
					return R_FALSE;
				}
				r_io_read_at (core->io, map->addr, buf, map->size);
				if (input[1]==' ' && input[2]) {
					snprintf (file, sizeof (file), "%s", input+2);
				} else snprintf (file, sizeof (file),
					"0x%08"PFMT64x"-0x%08"PFMT64x"-%s.dmp",
					map->addr, map->addr_end, r_str_rwx_i (map->perm));
				if (!r_file_dump (file, buf, map->size)) {
					eprintf ("Cannot write '%s'\n", file);
					free (buf);
					return R_FALSE;
				}
				eprintf ("Dumped %d bytes into %s\n", (int)map->size, file);
				free (buf);
				return R_TRUE;
			}
		}
		eprintf ("No debug region found here\n");
		return R_FALSE;
	case 'l':
		if (input[1] != ' ') {
			eprintf ("Usage: dml [file]\n");
			return R_FALSE;
		}
		r_debug_map_sync (core->dbg); // update process memory maps
		r_list_foreach (core->dbg->maps, iter, map) {
			if (addr >= map->addr && addr < map->addr_end) {
				int sz;
				char *buf = r_file_slurp (input+2, &sz);
#warning TODO: use mmap here. we need a portable implementation
				if (!buf) {
					eprintf ("Cannot allocate 0x%08"PFMT64x" bytes\n", map->size);
					return R_FALSE;
				}
				r_io_write_at (core->io, map->addr, (const ut8*)buf, sz);
				if (sz != map->size)
					eprintf	("File size differs from region size (%d vs %"PFMT64d")\n",
						sz, map->size);
				eprintf ("Loaded %d bytes into the map region at 0x%08"PFMT64x"\n",
					sz, map->addr);
				free (buf);
				return R_TRUE;
			}
		}
		eprintf ("No debug region found here\n");
		return R_FALSE;
	case 'i':
		{ // Move to a separate function
		RCoreBinFilter filter;
		const char *libname = NULL, *symname = NULL;
		char *ptr = strdup (r_str_trim_head ((char*)input+2));
		int i;
		ut64 baddr;

		addr = 0LL;
		i = r_str_word_set0 (ptr);
		switch (i) {
		case 2: // get symname
			symname = r_str_word_get0 (ptr, 1);
		case 1: // get addr|libname
			addr = r_num_math (core->num, r_str_word_get0 (ptr, 0));
			if (!addr) libname = r_str_word_get0 (ptr, 0);
		}
		r_debug_map_sync (core->dbg); // update process memory maps
		r_list_foreach (core->dbg->maps, iter, map) {
			if (core && core->bin && core->bin->cur && core->bin->cur->o && \
				(addr != -1 && (addr >= map->addr && addr < map->addr_end)) ||
				(libname != NULL && (strstr (map->name, libname)))) {
				RBinObject *o = core->bin->cur->o;
				filter.offset = 0LL;
				filter.name = (char *)symname;
				baddr = o->baddr;
				o->baddr = map->addr;
				r_core_bin_info (core, R_CORE_BIN_ACC_SYMBOLS, (input[1]=='*'),
						R_TRUE, &filter, 0, NULL);
				o->baddr = baddr;
				break;
			}
		}
		free (ptr);
		}
		break;
	case ' ':
		{
			char *p;
			int size;
			p = strchr (input+2, ' ');
			if (p) {
				*p++ = 0;
				addr = r_num_math (core->num, input+1);
				size = r_num_math (core->num, p);
				r_debug_map_alloc(core->dbg, addr, size);
			} else {
				eprintf ("Usage: dm addr size\n");
				return R_FALSE;
			}
		}
		break;
	case '-':
		addr = r_num_math (core->num, input+2);
		r_list_foreach (core->dbg->maps, iter, map) {
			if (addr >= map->addr && addr < map->addr_end) {
				r_debug_map_dealloc(core->dbg, map);
				r_debug_map_sync (core->dbg);
				return R_TRUE;
			}
		}
		eprintf ("The address doesn't match with any map.\n");
		break;
	case '\0':
	case '*':
	case 'j':
		r_debug_map_sync (core->dbg); // update process memory maps
		r_debug_map_list (core->dbg, core->offset, input[0]);
		break;
	}
	return R_TRUE;
}

static void cmd_debug_reg(RCore *core, const char *str) {
	int size, i, type = R_REG_TYPE_GPR;
	int bits = (core->dbg->bits & R_SYS_BITS_64)? 64: 32;
	int use_colors = r_config_get_i(core->config, "scr.color");
	const char *use_color;
	if (use_colors) {
#undef ConsP
#define ConsP(x) (core->cons && core->cons->pal.x)? core->cons->pal.x
		use_color = ConsP(creg): Color_BWHITE;
	} else {
		use_color = NULL;
	}
	struct r_reg_item_t *r;
	const char *name;
	char *arg;
	switch (str[0]) {
	case '-':
		r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, '-', 0);
		break;
	case '?':
		if (str[1]) {
			ut64 off;
			r_debug_reg_sync (core->dbg, -1, 0); //R_REG_TYPE_GPR, R_FALSE);
			off = r_debug_reg_get (core->dbg, str+1);
	//		r = r_reg_get (core->dbg->reg, str+1, 0);
	//		if (r == NULL) eprintf ("Unknown register (%s)\n", str+1);
			r_cons_printf ("0x%08"PFMT64x"\n", off);
			core->num->value = off;
			//r_reg_get_value (core->dbg->reg, r));
		} else {
			const char * help_message[] = {
				"Usage: dr", "", "Registers commands",
				"dr", "", "Show 'gpr' registers",
				"dr", " 16", "Show 16 bit registers",
				"dr", " 32", "Show 32 bit registers",
				"dr", " all", "Show all registers",
				"dr", " <type>", "Show flag registers",
				"dr", " <register>=<val>", "Set register value",
				"dr=", "", "Show registers in columns",
				"dr?", "<register>", "Show value of given register",
				"drb", " [type]", "Display hexdump of gpr arena (WIP)",
				"drc", " [name]", "Related to conditional flag registers",
				"drd", "", "Show only different registers",
				"drl", "", "List all register names",
				"drn", " <pc>", "Get regname for pc,sp,bp,a0-3,zf,cf,of,sg",
				"dro", "", "Show previous (old) values of registers",
				"drp", " <file>", "Load register metadata file",
				"drp", "", "Display current register profile",
				"drs", "[?]", "Stack register states",
				"drt", "", "Show all register types",
				".dr", "*", "Include common register values in flags",
				".dr", "-", "Unflag all registers",
				NULL
			};
			// TODO: 'drs' to swap register arenas and display old register valuez

			r_core_cmd_help (core, help_message);
		}
		break;
	case 'l':
		//r_core_cmd0 (core, "drp~[1]");
		{
			RRegSet *rs = r_reg_regset_get (core->dbg->reg, R_REG_TYPE_GPR);
			if (rs) {
				RRegItem *r;
				RListIter *iter;
				r_list_foreach (rs->regs, iter, r) {
					r_cons_printf ("%s\n", r->name);
				}
			}
		}
		break;
	case 'b':
		{ // WORK IN PROGRESS // DEBUG COMMAND
		int len;
		const ut8 *buf = r_reg_get_bytes (core->dbg->reg, R_REG_TYPE_GPR, &len);
		//r_print_hexdump (core->print, 0LL, buf, len, 16, 16);
		r_print_hexdump (core->print, 0LL, buf, len, 32, 4);
		}
		break;
	case 'c':
// TODO: set flag values with drc zf=1
		{
		RRegItem *r;
		const char *name = str+1;
		while (*name==' ') name++;
		if (*name && name[1]) {
			r = r_reg_cond_get (core->dbg->reg, name);
			if (r) {
				r_cons_printf ("%s\n", r->name);
			} else {
				int id = r_reg_cond_from_string (name);
				RRegFlags* rf = r_reg_cond_retrieve (core->dbg->reg, NULL);
				if (rf) {
					int o = r_reg_cond_bits (core->dbg->reg, id, rf);
					core->num->value = o;
					// ORLY?
					r_cons_printf ("%d\n", o);
free (rf);
				} else eprintf ("unknown conditional or flag register\n");
			}
		} else {
			RRegFlags *rf = r_reg_cond_retrieve (core->dbg->reg, NULL);
			if (rf) {
				r_cons_printf ("| s:%d z:%d c:%d o:%d p:%d\n",
					rf->s, rf->z, rf->c, rf->o, rf->p);
				if (*name=='=') {
					for (i=0; i<R_REG_COND_LAST; i++) {
						r_cons_printf ("%s:%d ",
							r_reg_cond_to_string (i),
							r_reg_cond_bits (core->dbg->reg, i, rf));
					}
					r_cons_newline ();
				} else {
					for (i=0; i<R_REG_COND_LAST; i++) {
						r_cons_printf ("%d %s\n",
							r_reg_cond_bits (core->dbg->reg, i, rf),
							r_reg_cond_to_string (i));
					}
				}
				free (rf);
			}
		}
		}
		break;
	case 'x':
		switch (str[1]) {
		case '-':
			r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_FALSE);
			r_debug_drx_unset (core->dbg, atoi (str+2));
			r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_TRUE);
			break;
		case ' ': {
			char *s = strdup (str+2);
			char sl, n, rwx;
			int len;
			ut64 off;

			sl = r_str_word_set0 (s);
			if (sl == 4) {
#define ARG(x) r_str_word_get0(s,x)
				n = (char)r_num_math (core->num, ARG(0));
				off = r_num_math (core->num, ARG(1));
				len = (int)r_num_math (core->num, ARG(2));
				rwx = (char)r_str_rwx (ARG(3));
				if (len== -1) {
					r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_FALSE);
					r_debug_drx_set (core->dbg, n, 0, 0, 0, 0);
					r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_TRUE);
				} else {
					r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_FALSE);
					r_debug_drx_set (core->dbg, n, off, len, rwx, 0);
					r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_TRUE);
				}
			} else eprintf ("|Usage: drx N [address] [length] [rwx]\n");
			free (s);
			} break;
		case '\0':
			r_debug_reg_sync (core->dbg, R_REG_TYPE_DRX, R_FALSE);
			r_debug_drx_list (core->dbg);
			break;
		default: {
			const char * help_message[] = {
				"Usage: drx", "", "Hardware breakpoints commands",
				"drx", "", "List all (x86?) hardware breakpoints",
				"drx", " <number> <address> <length> <perms>", "Modify hardware breakpoint",
				"drx-", "<number>", "Clear hardware breakpoint",
				NULL
			};
			r_core_cmd_help (core, help_message);
			}
			break;
		}
		break;
	case 's':
		switch (str[1]) {
		case '-':
			r_reg_arena_pop (core->dbg->reg);
			// restore debug registers if in debugger mode
			r_debug_reg_sync (core->dbg, 0, 1);
			break;
		case '+':
			r_reg_arena_push (core->dbg->reg);
			break;
		case '?': {
			const char * help_message[] = {
				"Usage: drs", "", "Register states commands",
				"drs", "", "List register stack",
				"drs", "+", "Push register state",
				"drs", "-", "Pop register state",
				NULL
			};
			r_core_cmd_help (core, help_message);
			}
			break;
		default:
			r_cons_printf ("%d\n", r_list_length (
				core->dbg->reg->regset[0].pool));
			break;
		}
		break;
	case 'p':
		if (!str[1]) {
			if (core->dbg->reg->reg_profile_str) {
				//core->anal->reg = core->dbg->reg;
				r_cons_printf ("%s\n", core->dbg->reg->reg_profile_str);
				//r_cons_printf ("%s\n", core->anal->reg->reg_profile);
			} else eprintf ("No register profile defined. Try 'dr.'\n");
		} else r_reg_set_profile (core->dbg->reg, str+2);
		break;
	case 't':
		for (i=0; (name=r_reg_get_type (i)); i++)
			r_cons_printf ("%s\n", name);
		break;
	case 'n':
		name = r_reg_get_name (core->dbg->reg, r_reg_get_name_idx (str+2));
		if (name && *name)
			r_cons_printf ("%s\n", name);
		else eprintf ("Oops. try drn [pc|sp|bp|a0|a1|a2|a3|zf|sf|nf|of]\n");
		break;
	case 'd':
		r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, 3, use_color); // XXX detect which one is current usage
		break;
	case 'o':
		r_reg_arena_swap (core->dbg->reg, R_FALSE);
		r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, 0, use_color); // XXX detect which one is current usage
		r_reg_arena_swap (core->dbg->reg, R_FALSE);
		break;
	case '=':
		if (r_config_get_i (core->config, "cfg.debug")) {
			if (r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE)) {
				r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, 2, use_color); // XXX detect which one is current usage
			} //else eprintf ("Cannot retrieve registers from pid %d\n", core->dbg->pid);
		} else {
			RReg *orig = core->dbg->reg;
			core->dbg->reg = core->anal->reg;
			r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, 2, use_color); // XXX detect which one is current usage
			core->dbg->reg = orig;
		}
		break;
	case '*':
		if (r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE))
			r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, '*', use_color);
		break;
	case 'j':
	case '\0':
		if (r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE)) {
		r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, str[0], use_color);
		} else
			eprintf ("Cannot retrieve registers from pid %d\n", core->dbg->pid);
		break;
	case ' ':
		arg = strchr (str+1, '=');
		if (arg) {
			char *string;
			const char *regname;
			*arg = 0;
			string = r_str_chop (strdup (str+1));
			regname = r_reg_get_name (core->dbg->reg,
				r_reg_get_name_idx (string));
			if (!regname)
				regname= string;
			r = r_reg_get (core->dbg->reg, regname, -1); //R_REG_TYPE_GPR);
			if (r) {
				r_cons_printf ("0x%08"PFMT64x" ->", str,
					r_reg_get_value (core->dbg->reg, r));
				r_reg_set_value (core->dbg->reg, r,
					r_num_math (core->num, arg+1));
				r_debug_reg_sync (core->dbg, -1, R_TRUE);
				r_cons_printf ("0x%08"PFMT64x"\n",
					r_reg_get_value (core->dbg->reg, r));
			} else eprintf ("Unknown register '%s'\n", string);
			free (string);
			return;
		} else {
			int role = r_reg_get_name_idx (str+1);
			const char *regname = r_reg_get_name (core->dbg->reg, role);
			if (!regname)
				regname = str+1;
			size = atoi (regname);
			if (size==0) {
				arg = strchr (str+1, ' ');
				if (arg && size==0) {
					*arg='\0';
					size = atoi (arg);
				} else size = bits;
				type = r_reg_type_by_name (str+1);
			}
			if (type != R_REG_TYPE_LAST) {
				r_debug_reg_sync (core->dbg, type, R_FALSE);
				r_debug_reg_list (core->dbg, type, size, str[0]=='*', use_color);
			} else eprintf ("cmd_debug_reg: Unknown type\n");
		}
	}
}

static int checkbpcallback(RCore *core) {
	ut64 pc = r_debug_reg_get (core->dbg, "pc");
	RBreakpointItem *bpi = r_bp_get (core->dbg->bp, pc);
	if (bpi) {
		const char *cmdbp = r_config_get (core->config, "cmd.bp");
		if (bpi->data)
			r_core_cmd (core, bpi->data, 0);
		if (cmdbp && *cmdbp)
			r_core_cmd (core, cmdbp, 0);
		return R_TRUE;
	}
	return R_FALSE;
}

static int bypassbp(RCore *core) {
	RBreakpointItem *bpi;
	ut64 addr;
	r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
	addr = r_debug_reg_get (core->dbg, "pc");
	bpi = r_bp_get (core->dbg->bp, addr);
	if (!bpi) return R_FALSE;
	/* XXX 2 if libr/debug/debug.c:226 is enabled */
	r_debug_step (core->dbg, 1);
	return R_TRUE;
}

static int validAddress(RCore *core, ut64 addr) {
	ut8 buf[8];
	int word = r_io_read_at (core->io, addr, buf, 8);
	core->num->value = 1;
	if (word != 8)
		return 0;
	core->num->value = 0;
	return 1;
}

static void static_debug_stop(void *u) {
	RDebug *dbg = (RDebug *)u;
	r_debug_stop (dbg);
}

static void r_core_cmd_bp(RCore *core, const char *input) {
	int i, hwbp = r_config_get_i (core->config, "dbg.hwbp");
	RDebugFrame *frame;
	RListIter *iter;
	const char *p;
	RList *list;
	ut64 addr;
	switch (input[1]) {
	case 't':
		addr = UT64_MAX;
		if (input[2]==' ' && input[3])
			addr = r_num_math (core->num, input+2);
		i = 0;
		list = r_debug_frames (core->dbg, addr);
		r_list_foreach (list, iter, frame) {
			r_cons_printf ("%d  0x%08"PFMT64x"  %d\n",
				i++, frame->addr, frame->size);
		}
		r_list_purge (list);
		break;
	case '*': r_bp_list (core->dbg->bp, 1); break;
	case '\0': r_bp_list (core->dbg->bp, 0); break;
	case '-':
		if (input[2] == '*') {
			r_bp_del_all (core->dbg->bp);
		} else r_bp_del (core->dbg->bp, r_num_math (core->num, input+2));
		break;
	case 'c':
		addr = r_num_math (core->num, input+2);
		RBreakpointItem *bpi = r_bp_get (core->dbg->bp, addr);
		if (bpi) {
			char *arg = strchr (input+2, ' ');
			if (arg)
				arg = strchr (arg+1, ' ');
			if (arg) {
				free (bpi->data);
				bpi->data = strdup (arg+1);
			} else {
				free (bpi->data);
				bpi->data = NULL;
			}
		} else eprintf ("No breakpoint defined at 0x%08"PFMT64x"\n", addr);
		break;
	case 's':
		addr = r_num_math (core->num, input+2);
		RBreakpointItem *bp = r_bp_get (core->dbg->bp, addr);
		if (bp) {
			//bp->enabled = !bp->enabled;
			r_bp_del (core->dbg->bp, addr);
		} else {
			if (hwbp) bp = r_bp_add_hw (core->dbg->bp, addr, 1, R_BP_PROT_EXEC);
			else bp = r_bp_add_sw (core->dbg->bp, addr, 1, R_BP_PROT_EXEC);
			if (!bp) eprintf ("Cannot set breakpoint (%s)\n", input+2);
		}
		r_bp_enable (core->dbg->bp, r_num_math (core->num, input+2), 0);
		break;
	case 'e':
		r_bp_enable (core->dbg->bp, r_num_math (core->num, input+2), 1);
		break;
	case 'd':
		r_bp_enable (core->dbg->bp, r_num_math (core->num, input+2), 0);
		break;
	case 'h':
		if (input[2]==' ') {
			if (!r_bp_use (core->dbg->bp, input+3))
				eprintf ("Invalid name: '%s'.\n", input+3);
		} else r_bp_plugin_list (core->dbg->bp);
		break;
	case ' ':
		for (p=input+1; *p==' ';p++);
		if (*p == '-') {
			r_bp_del (core->dbg->bp, r_num_math (core->num, p+1));
		} else {
			addr = r_num_math (core->num, input+2);
			if (validAddress (core, addr)) {
				if (hwbp) bp = r_bp_add_hw (core->dbg->bp, addr, 1, R_BP_PROT_EXEC);
				else bp = r_bp_add_sw (core->dbg->bp, addr, 1, R_BP_PROT_EXEC);
				if (!bp) eprintf ("Cannot set breakpoint (%s)\n", input+2);
			} else eprintf ("Can't place a breakpoint here. No mapped memory\n");
		}
		break;
	case '?':
	default:{
			const char* help_msg[] = {
				"Usage: db", "", " # Breakpoints commands",
				"db", "", "List breakpoints",
				"db", " sym.main", "Add breakpoint into sym.main",
				"db", " <address>", "Add breakpoint",
				"db", " -<address>", "Remove breakpoint",
				// "dbi", " 0x848 ecx=3", "stop execution when condition matches",
				"dbc", " <address> <cmd>", "Run command when breakpoint is hit",
				"dbd", " <address>", "Disable breakpoint",
				"dbe", " <address>", "Enable breakpoint",
				"dbh", " x86", "Set/list breakpoint plugin handlers",
				"dbs", " <address>", "Toggle breakpoint\n",
				NULL};
		r_core_cmd_help (core, help_msg);
		}
		break;
	}
}

static void r_core_debug_trace_calls (RCore *core) {
	int n = 0, t = core->dbg->trace->enabled;
	/*RGraphNode *gn;*/
	core->dbg->trace->enabled = 0;
	r_graph_plant (core->dbg->graph);
	r_cons_break (static_debug_stop, core->dbg);
	r_reg_arena_swap (core->dbg->reg, R_TRUE);
	for (;;) {
		ut8 buf[32];
		ut64 addr;
		RAnalOp aop;
		if (r_cons_singleton ()->breaked)
			break;
		r_debug_step (core->dbg, 1);
		r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
		addr = r_debug_reg_get (core->dbg, "pc");
		r_io_read_at (core->io, addr, buf, sizeof (buf));
		r_anal_op (core->anal, &aop, addr, buf, sizeof (buf));
		eprintf (" %d %"PFMT64x"\r", n++, addr);
		switch (aop.type) {
			case R_ANAL_OP_TYPE_UCALL:
				// store regs
				// step into
				// get pc
				r_debug_step (core->dbg, 1);
				r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
				addr = r_debug_reg_get (core->dbg, "pc");
				eprintf ("0x%08"PFMT64x" ucall. computation may fail\n", addr);
				r_graph_push (core->dbg->graph, addr, NULL);
				// TODO: push pc+aop.length into the call path stack
				break;
			case R_ANAL_OP_TYPE_CALL:
				r_graph_push (core->dbg->graph, addr, NULL);
				break;
			case R_ANAL_OP_TYPE_RET:
#if 0
				// TODO: we must store ret value for each call in the graph path to do this check
				r_debug_step (core->dbg, 1);
				r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
				addr = r_debug_reg_get (core->dbg, "pc");
				// TODO: step into and check return address if correct
				// if not correct we are hijacking the control flow (exploit!)
#endif
				/*gn =*/ r_graph_pop (core->dbg->graph);
#if 0
				if (addr != gn->addr) {
					eprintf ("Oops. invalid return address 0x%08"PFMT64x
							"\n0x%08"PFMT64x"\n", addr, gn->addr);
				}
#endif
				break;
		}
		if (checkbpcallback (core)) {
			eprintf ("Interrupted by a breakpoint\n");
			break;
		}
	}
	r_graph_traverse (core->dbg->graph);
	core->dbg->trace->enabled = t;
	r_cons_break_end();
}

static void r_core_debug_kill (RCore *core, const char *input) {
	if (!input || *input=='?') {
		if (input && input[1]) {
			const char *signame, *arg = input+1;
			int signum = atoi (arg);
			if (signum>0) {
				signame = r_debug_signal_resolve_i (core->dbg, signum);
				if (signame)
					r_cons_printf ("%s\n", signame);
			} else {
				signum = r_debug_signal_resolve (core->dbg, arg);
				if (signum>0)
					r_cons_printf ("%d\n", signum);
			}
		} else {
			const char * help_message[] = {
				"Usage: dk", "", "Signal commands",
				"dk", "", "List all signal handlers of child process",
				"dk", " <signal>", "Send KILL signal to child",
				"dk", " <signal>=1", "Set signal handler for <signal> in child",
				"dk?", "<signal>", "Name/signum resolver",
				"dko", " <signal> sc", "On signal Skip and CONT (default stop, always trace)",
				NULL
			};
			r_core_cmd_help (core, help_message);
		}
	} else if (*input=='o') {
		char *p, *name = strdup (input+2);
		p = strchr (name, ' ');
		if (p) {
			int signum = atoi (name);
			*p++ = 0;
			// Actions:
			//  - pass
			//  - trace
			//  - stop
			if (signum<1) signum = r_debug_signal_resolve (core->dbg, name);
			if (signum>0) {
				int sigopt = 0;
				if (strchr (p, 's')) sigopt |= R_DBG_SIGNAL_SKIP;
				if (strchr (p, 'c')) sigopt |= R_DBG_SIGNAL_CONT;
				r_debug_signal_setup (core->dbg, signum, sigopt);
			} else {
				eprintf ("Invalid signal\n");
			}
		} else {
			eprintf ("|Usage: dko SIGNAL sc\n"
			"| 'SIGNAL' can be a number or a string that resolves with dk?..\n"
			"| 'sc' stands for SKIP and CONT\n");
		}
		free (name);
	} else if (!*input) {
		r_debug_signal_list (core->dbg);
#if 0
		RListIter *iter;
		RDebugSignal *ds;
		eprintf ("TODO: list signal handlers of child\n");
		RList *list = r_debug_kill_list (core->dbg);
		r_list_foreach (list, iter, ds) {
			// TODO: resolve signal name by number and show handler offset
			eprintf ("--> %d\n", ds->num);
		}
		r_list_free (list);
#endif
	} else {
		int sig = atoi (input);
		char *p = strchr (input, '=');
		if (p) {
			r_debug_kill_setup (core->dbg, sig, r_num_math (core->num, p+1));
		} else {
			r_debug_kill (core->dbg, core->dbg->pid, core->dbg->tid, sig);
		}
	}
}

static int cmd_debug(void *data, const char *input) {
	RCore *core = (RCore *)data;
	int i, times=0, follow=0;
	ut64 addr;
	char *ptr;

	if (r_sandbox_enable (0)) {
		eprintf ("Debugger commands disabled in sandbox mode\n");
		return 0;
	}

	switch (input[0]) {
	case 't':
		switch (input[1]) {
		case '?': {
			const char * help_message[] = {
				"Usage: dt", "", "Trace commands",
				"dtc", "", "Trace call/ret",
				"dtg", "", "Graph call/ret trace",
				"dtr", "", "Reset traces (instruction//cals)",
				NULL
			};
			r_core_cmd_help (core, help_message);
			}
			break;
		case 'c':
			if (r_debug_is_dead (core->dbg))
				eprintf ("No process to debug.");
			else r_core_debug_trace_calls (core);
			break;
		case 'g':
			dot_r_graph_traverse (core, core->dbg->graph);
			break;
		case 'r':
			r_graph_reset (core->dbg->graph);
			r_debug_trace_free (core->dbg);
			core->dbg->trace = r_debug_trace_new ();
			break;
		case '\0':
			r_debug_trace_list (core->dbg, -1);
			break;
		default:
			eprintf ("Wrong arg. See dt?\n");
			break;
		}
		break;
	case 'd':
		switch (input[1]) {
		case '\0':
			r_debug_desc_list (core->dbg, 0);
			break;
		case '*':
			r_debug_desc_list (core->dbg, 1);
			break;
		case 's':
			// r_debug_desc_seek()
			break;
		case 'd':
			// r_debug_desc_dup()
			break;
		case 'r':
			// r_debug_desc_read()
			break;
		case 'w':
			// r_debug_desc_write()
			break;
		case '-':
			// close file
			//r_core_syscallf (core, "close", "%d", atoi (input+2));
			r_core_cmdf (core, "dis close %d", atoi (input+2));
			// TODO: run
			break;
		case ' ':
			// TODO: handle read, readwrite, append
			r_core_syscallf (core, "open", "%s, %d, %d",
				input+2, 2, 0644);
			// open file
			break;
		case '?':
		default: {
			const char * help_message[] = {
				"Usage: dd", "", "Descriptors commands",
				"dd", "", "List file descriptors",
				"dd", " <file>", "Open and map that file into the UI",
				"dd-", "<fd>", "Close stdout fd",
				"dd*", "", "List file descriptors (in radare commands)",
				NULL
			};
			r_core_cmd_help (core, help_message);
			}
			break;
		}
		break;
	case 's':
		if (strlen (input) > 2)
			times = atoi (input+2);
		if (times<1) times = 1;
		switch (input[1]) {
		case '?': {
			const char * help_message[] = {
				"Usage: ds", "", "Step commands",
				"ds", "", "Step one instruction",
				"ds", " <num>", "Step <num> instructions",
				"dsf", "", "Step until end of frame",
				"dsi", " <cond>", "Continue until condition matches",
				"dsl", "", "Step one source line",
				"dsl", " <num>", "Step <num> source lines",
				"dso", " <num>", "Step over <num> instructions",
				"dsp", "", "Step into program (skip libs)",
				"dss", " <num>", "Skip <num> step instructions",
				"dsu", " <address>", "Step until address",
				"dsue", " <esil>", "Step until esil expression matches",
				NULL
			};

			r_core_cmd_help (core, help_message);
			}
			break;
		case 'i':
			if (input[2] == ' ') {
				int n = 0;
				r_cons_break (static_debug_stop, core->dbg);
				do {
					if (r_cons_singleton ()->breaked)
						break;
					r_debug_step (core->dbg, 1);
					if (r_debug_is_dead (core->dbg))
						break;
					if (checkbpcallback (core)) {
						eprintf ("Interrupted by a breakpoint\n");
						break;
					}
					r_core_cmd0 (core, ".dr*");
					n++;
				} while (!r_num_conditional (core->num, input+3));
				eprintf ("Stopped after %d instructions\n", n);
			} else {
				eprintf ("Missing argument\n");
			}
			break;
		case 'f':
			step_until_eof (core);
			break;
		case 'u':
			if (input[2]=='e') {
				step_until_esil (core, input+3);
			} else {
				r_reg_arena_swap (core->dbg->reg, R_TRUE);
				step_until (core, r_num_math (core->num, input+2)); // XXX dupped by times
			}
			break;
		case 'p':
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			for (i=0; i<times; i++) {
				ut8 buf[64];
				ut64 addr;
				RAnalOp aop;
				r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
				addr = r_debug_reg_get (core->dbg, "pc");
				r_io_read_at (core->io, addr, buf, sizeof (buf));
				r_anal_op (core->anal, &aop, addr, buf, sizeof (buf));
				if (aop.type == R_ANAL_OP_TYPE_CALL) {
					RIOSection *s = r_io_section_vget (core->io, aop.jump);
					if (!s) {
						r_debug_step_over (core->dbg, times);
						continue;
					}
				}
				r_debug_step (core->dbg, 1);
				if (checkbpcallback (core)) {
					eprintf ("Interrupted by a breakpoint\n");
					break;
				}
			}
			break;
		case 's':
			{
			ut64 addr = r_debug_reg_get (core->dbg, "pc");
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			for (i=0; i<times; i++) {
				ut8 buf[64];
				RAnalOp aop;
				r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
				r_io_read_at (core->io, addr, buf, sizeof (buf));
				r_anal_op (core->anal, &aop, addr, buf, sizeof (buf));
				if (aop.jump != UT64_MAX && aop.fail != UT64_MAX) {
					eprintf ("Don't know how to skip this instruction\n");
					break;
				}
				addr += aop.size;
			}
			r_debug_reg_set (core->dbg, "pc", addr);
			}
			break;
		case 'o':
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			r_debug_step_over (core->dbg, times);
			if (checkbpcallback (core)) {
				eprintf ("Interrupted by a breakpoint\n");
				break;
			}
			break;
		case 'l':
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			step_line (core, times);
			break;
		default:
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
			r_debug_step (core->dbg, times);
			if (checkbpcallback (core)) {
				eprintf ("Interrupted by a breakpoint\n");
				break;
			}
		}
		follow = r_config_get_i (core->config, "dbg.follow");
		break;
	case 'b':
		r_core_cmd_bp (core, input);
		break;
	case 'H':
		eprintf ("TODO: transplant process\n");
		break;
	case 'c':
		// TODO: we must use this for step 'ds' too maybe...
		r_cons_break (static_debug_stop, core->dbg);
		switch (input[1]) {
		case '?': {
				const char * help_message[] = {
				"Usage: dc", "", "Execution continuation commands",
				"dc", "", "Continue execution of all children",
				"dc", " <pid>", "Continue execution of pid",
				"dc", "[-pid]", "Stop execution of pid",
				"dca", " [sym] [sym].", "Continue at every hit on any given symbol",
				"dcc", "", "Continue until call (use step into)",
				"dcf", "", "Continue until fork (TODO)",
				"dck", " <signal> <pid>", "Continue sending signal to process",
				"dco", " <num>", "Step over <num> instructions",
				"dcp", "", "Continue until program code (mapped io section)",
				"dcr", "", "Continue until ret (uses step over)",
				"dcs", " <num>", "Continue until syscall",
				"dct", " <len>", "Traptrace from curseek to len, no argument to list",
				"dcu", " [addr]", "Continue until address",
				"dcu", " <address> [end]", "Continue until given address range",
				/*"TODO: dcu/dcr needs dbg.untilover=true??",*/
				/*"TODO: same for only user/libs side, to avoid steping into libs",*/
				/*"TODO: support for threads?",*/
				NULL
				};

				r_core_cmd_help (core, help_message);
				}
			break;
		case 'a':
			eprintf ("TODO: dca\n");
			break;
		case 'f':
			eprintf ("[+] Running 'dcs vfork' behind the scenes...\n");
			// we should stop in fork and vfork syscalls
			//TODO: multiple syscalls not handled yet
			// r_core_cmd0 (core, "dcs vfork fork");
			r_core_cmd0 (core, "dcs vfork fork");
			break;
		case 'c':
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			r_debug_continue_until_optype (core->dbg, R_ANAL_OP_TYPE_CALL, 0);
			checkbpcallback (core);
			break;
		case 'r':
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			r_debug_continue_until_optype (core->dbg, R_ANAL_OP_TYPE_RET, 1);
			checkbpcallback (core);
			break;
		case 'k':
			// select pid and r_debug_continue_kill (core->dbg,
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			ptr = strchr (input+3, ' ');
			if (ptr) {
				bypassbp (core);
				int old_pid = core->dbg->pid;
				int old_tid = core->dbg->tid;
				int pid = atoi (ptr+1);
				int tid = pid; // XXX
				*ptr = 0;
				r_debug_select (core->dbg, pid, tid);
				r_debug_continue_kill (core->dbg, atoi (input+2));
				r_debug_select (core->dbg, old_pid, old_tid);
			} else r_debug_continue_kill (core->dbg, atoi (input+2));
			checkbpcallback (core);
			break;
		case 's':
			switch (input[2]) {
			case '*':
				cmd_debug_cont_syscall (core, "-1");
				break;
			case ' ':
				cmd_debug_cont_syscall (core, input+3);
				break;
			case '\0':
				cmd_debug_cont_syscall (core, NULL);
				break;
			default:
			case '?':
				eprintf ("|Usage: dcs [syscall-name-or-number]\n");
				eprintf ("|dcs         : continue until next syscall\n");
				eprintf ("|dcs mmap    : continue until next call to mmap\n");
				eprintf ("|dcs*        : trace all syscalls (strace)\n");
				eprintf ("|dcs?        : show this help\n");
				break;
			}
			break;
		case 'p':
			{ // XXX: this is very slow
				RIOSection *s;
				ut64 pc;
				int n = 0;
				int t = core->dbg->trace->enabled;
				core->dbg->trace->enabled = 0;
				r_cons_break (static_debug_stop, core->dbg);
				do {
					r_debug_step (core->dbg, 1);
					r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
					pc = r_debug_reg_get (core->dbg, "pc");
					eprintf (" %d %"PFMT64x"\r", n++, pc);
					s = r_io_section_vget (core->io, pc);
					if (r_cons_singleton ()->breaked)
						break;
				} while (!s);
				eprintf ("\n");
				core->dbg->trace->enabled = t;
				r_cons_break_end();
				return 1;
			}
		case 'u':
			if (input[2] != ' ') {
				eprintf ("|Usage: dcu <address>\n");
				return 1;
			}
			ptr = strchr (input+3, ' ');
// TODO : handle ^C here
			if (ptr) { // TODO: put '\0' in *ptr to avoid
				ut64 from, to, pc;
				from = r_num_math (core->num, input+3);
				to = r_num_math (core->num, ptr+1);
				do {
					r_debug_step (core->dbg, 1);
					r_debug_reg_sync (core->dbg, R_REG_TYPE_GPR, R_FALSE);
					pc = r_debug_reg_get (core->dbg, "pc");
					eprintf ("Continue 0x%08"PFMT64x" > 0x%08"PFMT64x" < 0x%08"PFMT64x"\n",
							from, pc, to);
				} while (pc < from || pc > to);
				return 1;
			}
			addr = r_num_math (core->num, input+2);
			if (addr) {
				eprintf ("Continue until 0x%08"PFMT64x"\n", addr);
				bypassbp (core);
				r_reg_arena_swap (core->dbg->reg, R_TRUE);
				r_bp_add_sw (core->dbg->bp, addr, 1, R_BP_PROT_EXEC);
				r_debug_continue (core->dbg);
				checkbpcallback (core);
				r_bp_del (core->dbg->bp, addr);
			} else eprintf ("Cannot continue until address 0\n");
			break;
		case ' ':
			{
				int old_pid = core->dbg->pid;
				int pid = atoi (input+2);
				bypassbp (core);
				r_reg_arena_swap (core->dbg->reg, R_TRUE);
				r_debug_select (core->dbg, pid, core->dbg->tid);
				r_debug_continue (core->dbg);
				r_debug_select (core->dbg, old_pid, core->dbg->tid);
				checkbpcallback (core);
			}
			break;
		case 't':
			cmd_debug_backtrace (core, input+2);
			break;
		default:
			bypassbp (core);
			r_reg_arena_swap (core->dbg->reg, R_TRUE);
			r_debug_continue (core->dbg);
			checkbpcallback (core);
		}
		follow = r_config_get_i (core->config, "dbg.follow");
		r_cons_break_end();
		break;
	case 'm':
		cmd_debug_map (core, input+1);
		break;
	case 'r':
		if (core->io->debug || input[1]=='?') {
			cmd_debug_reg (core, input+1);
		} else {
			void cmd_anal_reg(RCore *core, const char *str);
			cmd_anal_reg (core, input+1);
		}
		//r_core_cmd (core, "|reg", 0);
		break;
	case 'p':
		cmd_debug_pid (core, input);
		break;
	case 'h':
		if (input[1]==' ')
			r_debug_use (core->dbg, input+2);
		else r_debug_plugin_list (core->dbg);
		break;
	case 'i':
		{
#define P r_cons_printf
		RDebugInfo *rdi = r_debug_info (core->dbg, input+2);
		if (rdi) {
			P ("pid=%d\n", rdi->pid);
			P ("tid=%d\n", rdi->tid);
			if (rdi->exe) P ("exe=%s\n", rdi->exe);
			if (rdi->cmdline) P ("cmdline=%s\n", rdi->cmdline);
			if (rdi->cwd) P ("cwd=%s\n", rdi->cwd);
			r_debug_info_free (rdi);
		}
#undef P
		}
		break;
	case 'x':
		switch (input[1]) {
		case 'a':
			{
			RAsmCode *acode;
			r_asm_set_pc (core->assembler, core->offset);
			acode = r_asm_massemble (core->assembler, input+2);
			if (acode && *acode->buf_hex) {
				r_reg_arena_push (core->dbg->reg);
				r_debug_execute (core->dbg, acode->buf, acode->len, 0);
				r_reg_arena_pop (core->dbg->reg);
			}
			r_asm_code_free (acode);
			}
			break;
		case 's':
			// XXX: last byte fails (ret) should not be generated
			r_core_cmdf (core, "dir `gs %s`", input+2);
			break;
		case 'r':
			r_reg_arena_push (core->dbg->reg);
			if (input[2]==' ') {
				ut8 bytes[4096];
				int bytes_len = r_hex_str2bin (input+2, bytes);
				r_debug_execute (core->dbg, bytes, bytes_len, 0);
			}
			r_reg_arena_pop (core->dbg->reg);
			break;
		case ' ':
			{
			ut8 bytes[4096];
			int bytes_len = r_hex_str2bin (input+2, bytes);
			if (bytes_len>0)
				r_debug_execute (core->dbg, bytes, bytes_len, 0);
			}
			break;
		default:{
			const char* help_msg[] = {
			"Usage: dx", "", " # Code injection commands",
			"dx", " <opcode>...", "Inject opcodes",
			"dxr", " <opcode>...", "Inject opcodes and restore state",
			"dxs", " write 1, 0x8048, 12", "Syscall injection (see gs)",
			"\nExamples:", "", "",
			"dx", " 9090", "Inject two x86 nop",
			"\"dia mov eax,6;mov ebx,0;int 0x80\"", "", "Inject and restore state",
			NULL};
			r_core_cmd_help (core, help_msg);
			}
			break;
		}
		break;
	case 'o':
		r_core_file_reopen (core, input[1]? input+2: NULL, 0);
		break;
	case 'w':
		r_cons_break (static_debug_stop, core->dbg);
		for (;!r_cons_singleton ()->breaked;) {
			int pid = atoi (input+1);
			//int opid = core->dbg->pid = pid;
			int res = r_debug_kill (core->dbg, pid, 0, 0);
			if (!res) break;
			r_sys_usleep (200);
		}
			r_cons_break_end();
		break;
	case 'k':
		r_core_debug_kill (core, input+1);
		break;
	default:{
			const char* help_msg[] = {
			"Usage:", "d", " # Debug commands",
			"db", "[?]", "Breakpoints commands",
			"dbt", "", "Display backtrace",
			"dc", "[?]", "Continue execution",
			"dd", "[?]", "File descriptors (!fd in r1)",
			"dh", " [handler]", "List or set debugger handler",
			"dH", " [handler]", "Transplant process to a new handler",
			"di", "", "Show debugger backend information (See dh)",
			"dk", "[?]", "List, send, get, set, signal handlers of child",
			"dm", "[?]", "Show memory maps",
			"do", "", "Open process (reload, alias for 'oo')",
			"dp", "[?]", "List, attach to process or thread id",
			"dr", "[?]", "Cpu registers",
			"ds", "[?]", "Step, over, source line",
			"dt", "[?]", "Display instruction traces (dtr=reset)",
			"dw", " <pid>", "Block prompt until pid dies",
			"dx", "[?]", "Inject code on running process and execute it (See gs)",
			NULL};
			r_core_cmd_help (core, help_msg);
		}
		break;
	}
	if (follow>0) {
		ut64 pc = r_debug_reg_get (core->dbg, "pc");
		if ((pc<core->offset) || (pc > (core->offset+follow)))
			r_core_cmd0 (core, "sr pc");
	}
	return 0;
}