radare2/libr/core/cmd_debug.c
2013-03-03 01:11:44 +01:00

1029 lines
31 KiB
C

/* radare - LGPL - Copyright 2009-2013 - pancake */
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;
}
/* until end of frame */
static int step_until_eof(RCore *core) {
ut64 off, now = r_debug_reg_get (core->dbg, "sp");
do {
r_debug_step (core->dbg, 1);
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;
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_meta_get_line (core->bin, off, file, sizeof (file), &line)) {
eprintf ("--> 0x%08"PFMT64x" %s : %d\n", off, file, line);
eprintf ("--> %s\n", r_file_slurp_line (file, line, 0));
find_meta = R_FALSE;
} 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_meta_get_line (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);
eprintf ("--> %s\n", r_file_slurp_line (file2, line2, 0));
return R_TRUE;
}
static void cmd_debug_pid(RCore *core, const char *input) {
const char *ptr;
int pid, sig;
switch (input[1]) {
case 'k':
/* 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_fork (core->dbg));
break;
case 't':
switch (input[2]) {
case 'n':
eprintf ("TODO: debug_clone: %d\n", r_debug_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->fd->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->fd->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);
break;
case ' ':
r_debug_pid_list (core->dbg,
(int) r_num_math (core->num, input+2));
break;
case '?':
r_cons_printf ("Usage: dp[=][pid]\n"
" dp list current pid and childrens\n"
" dp 748 list children of pid\n"
" dp* list all attachable pids\n"
" dpa 377 attach and select this pid\n"
" dp=748 select this pid\n"
" dpn Create new process (fork)\n"
" dpnt Create new thread (clone)\n"
" dpt List threads of current pid\n"
" dpt 74 List threads of given process\n"
" dpt=64 Attach to thread\n"
" dpk P S send signal S to P process id\n");
break;
default:
eprintf ("selected: %d %d\n", core->dbg->pid, core->dbg->tid);
r_debug_pid_list (core->dbg, core->dbg->pid);
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.length));
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 '?':
r_cons_printf (
"Usage: dm [size]\n"
" dm List memory maps of target process\n"
" dm* Same as above but in radare commands\n"
" dm 4096 Allocate 4096 bytes in child process\n"
" dm-0x8048 Deallocate memory map of address 0x8048\n"
" dmp A S rwx Change page at A with size S protection permissions\n"
" dmd [file] Dump current debug map region to a file (from-to.dmp) (see Sd)\n"
" dml file Load contents of file into the current map region (see Sl)\n"
" dmi [addr|libname] [symname] List symbols of target lib\n"
" dmi* [addr|libname] [symname] Same as above but in radare commands\n"
//" dm rw- esp 9K set 9KB of the stack as read+write (no exec)\n"
"TODO: map files in process memory. (dmf file @ [addr])\n");
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]) {
strncpy (file, input+2, sizeof (file));
} 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 ((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);
o->baddr = baddr;
break;
}
}
free (ptr);
}
break;
case '*':
r_debug_map_sync (core->dbg); // update process memory maps
r_debug_map_list (core->dbg, core->offset, 1);
break;
case '-':
case ' ':
eprintf ("TODO\n");
break;
default:
r_debug_map_sync (core->dbg); // update process memory maps
r_debug_map_list (core->dbg, core->offset, 0);
break;
}
return R_TRUE;
}
static void cmd_debug_reg(RCore *core, const char *str) {
struct r_reg_item_t *r;
const char *name;
char *arg;
int size, i, type = R_REG_TYPE_GPR;
int bits = (core->dbg->bits & R_SYS_BITS_64)? 64: 32;
switch (str[0]) {
case '?':
if (str[1]) {
ut64 off;
r_debug_reg_sync (core->dbg, 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);
//r_reg_get_value (core->dbg->reg, r));
} else
eprintf ("Usage: dr[*] [type] [size] - get/set registers\n"
" dr show 'gpr' registers\n"
" dr all show all registers\n"
" dr flg 1 show flag registers ('flg' is type, see drt)\n"
" dr 16 show 16 bit registers\n"
" dr 32 show 32 bit registers\n"
" dr eax=33 set register value. eax = 33\n"
" dr? display this help message\n"
" drt show all register types\n"
" drn [pc] get register name for pc,sp,bp,a0-3\n"
" dro show previous (old) values of registers\n"
" dr= show registers in columns\n"
" dr?eax show value of eax register\n"
" .dr* include common register values in flags\n"
" .dr- unflag all registers\n"
" drp [file] load register metadata file\n"
" drp display current register profile\n"
" drb [type] display hexdump of gpr arena (WIP)\n");
// TODO: 'drs' to swap register arenas and display old register valuez
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 '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 dn [pc|sp|bp|a0|a1|a2|a3]\n");
break;
case 'd':
r_debug_reg_list (core->dbg, R_REG_TYPE_GPR, bits, 3); // 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); // XXX detect which one is current usage
r_reg_arena_swap (core->dbg->reg, R_FALSE);
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, 2); // XXX detect which one is current usage
} //else eprintf ("Cannot retrieve registers from pid %d\n", core->dbg->pid);
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, '*');
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]);
} else eprintf ("Cannot retrieve registers from pid %d\n", core->dbg->pid);
break;
case ' ':
arg = strchr (str+1, '=');
if (arg) {
*arg = 0;
r = r_reg_get (core->dbg->reg, str+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, R_REG_TYPE_GPR, R_TRUE);
r_cons_printf ("0x%08"PFMT64x"\n",
r_reg_get_value (core->dbg->reg, r));
} else eprintf ("Unknown register '%s'\n", str+1);
return;
}
size = atoi (str+1);
if (size==0) {
arg = strchr (str+1, ' ');
if (arg && size==0) {
*arg='\0';
size = atoi (arg);
} else size = core->dbg->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]=='*');
} 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) {
if (bpi->data)
r_core_cmd (core, bpi->data, 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 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) {
ut64 addr;
RList *list;
RListIter *iter;
RDebugFrame *frame;
int i, hwbp = r_config_get_i (core->config, "dbg.hwbp");
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_destroy (list);
break;
case '\0':
r_bp_list (core->dbg->bp, input[1]=='*');
break;
case '-':
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;
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 '?':
r_cons_printf (
"Usage: db[ecdht] [[-]addr] [len] [rwx] [condstring]\n"
"db ; list breakpoints\n"
"db sym.main ; add breakpoint into sym.main\n"
"db 0x804800 ; add breakpoint\n"
"db -0x804800 ; remove breakpoint\n"
"dbs 0x8048000 ; toggle breakpoint on given address\n"
"dbe 0x8048000 ; enable breakpoint\n"
"dbc 0x8048000 cmd ; run command when breakpoint is hit\n"
"dbd 0x8048000 ; disable breakpoint\n"
"dbh x86 ; set/list breakpoint plugin handlers\n"
"Unrelated:\n"
"dbt [ebp] ; debug backtrace\n");
break;
default:
addr = r_num_math (core->num, input+2);
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);
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 int cmd_debug(void *data, const char *input) {
RCore *core = (RCore *)data;
int i, times, sig, follow=0;
ut64 addr;
char *ptr;
switch (input[0]) {
case 'x': // XXX : only for testing
r_debug_execute (core->dbg, (ut8*)
"\xc7\xc0\x03\x00\x00\x00\x33\xdb\x33"
"\xcc\xc7\xc2\x10\x00\x00\x00\xcd\x80", 18);
break;
case 't':
switch (input[1]) {
case '?':
r_cons_printf ("Usage: dt[*] [tag]\n");
r_cons_printf (" dtc - trace call/ret\n");
r_cons_printf (" dtg - graph call/ret trace\n");
r_cons_printf (" dtr - reset traces (instruction//cals)\n");
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
break;
case ' ':
// open file
break;
case '?':
default:
r_cons_printf ("Usage: dd[*sdrw-?]\n"
" dd list filedescriptors\n"
" dd* list filedescriptors (in radare commands)\n"
" dd? show this help\n");
break;
}
break;
case 's':
times = atoi (input+2);
if (times<1) times = 1;
switch (input[1]) {
case '?':
r_cons_printf ("Usage: ds[ol] [count]\n"
" ds step one instruction\n"
" ds 4 step 4 instructions\n"
" dss 3 skip 3 step instructions\n"
" dso 3 step over 3 instructions\n"
" dsp step into program (skip libs)\n"
" dsu addr step until address\n"
" dsf step until end of frame\n"
" dsl step one source line\n"
" dsl 40 step 40 source lines\n");
break;
case 'f':
step_until_eof(core);
break;
case 'u':
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_get (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 ("Dont know how to skip this instruction\n");
break;
}
addr += aop.length;
}
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 '?':
eprintf("Usage: dc[?] -- continue execution\n"
" dc? show this help\n"
" dc continue execution of all children\n"
" dcf continue until fork (TODO)\n"
" dca [sym] [sym]. continue at every hit on any given symbol\n"
" dct [len] traptrace from curseek to len, no argument to list\n"
" dcu [addr] continue until address\n"
" dcu [addr] [end] continue until given address range\n"
" dco [num] step over N instructions\n"
" dcp continue until program code (mapped io section)\n"
" dcs [num] continue until syscall\n"
" dcc continue until call (use step into)\n"
" dcr continue until ret (uses step over)\n"
" dck [sig] [pid] continue sending kill 9 to process\n"
" dc [pid] continue execution of pid\n"
" dc[-pid] stop execution of pid\n"
"TODO: dcu/dcr needs dbg.untilover=true??\n"
"TODO: same for only user/libs side, to avoid steping into libs\n"
"TODO: support for threads?\n");
break;
case 'a':
eprintf ("TODO: dca\n");
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':
if (input[2]==' ') {
sig = r_num_math (core->num, input+3);
if (sig <= 0) {
sig = r_syscall_get_num (core->anal->syscall, input+3);
if (sig == -1) {
eprintf ("Unknown syscall number\n");
return 0;
}
}
eprintf ("Running child until syscall %d\n", sig);
r_reg_arena_swap (core->dbg->reg, R_TRUE);
r_debug_continue_syscall (core->dbg, sig);
checkbpcallback (core);
} else eprintf ("Usage: dcs [syscall-name-or-number]\n");
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_get (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':
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':
cmd_debug_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 '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;
default:
r_cons_printf ("Usage: d[sbhcrbo] [arg]\n"
" dh [handler] list or set debugger handler\n"
" dH [handler] transplant process to a new handler\n"
" dd file descriptors (!fd in r1)\n"
" ds[ol] N step, over, source line\n"
" do open process (reload, alias for 'oo')\n"
" dp[=*?t][pid] list, attach to process or thread id\n"
" dc[?] continue execution. dc? for more\n"
" dr[?] cpu registers, dr? for extended help\n"
" db[?] breakpoints\n"
" dbt display backtrace\n"
" dt[?r] [tag] display instruction traces (dtr=reset)\n"
" dm[?*] show memory maps\n"
" dw [pid] block prompt until pid dies\n");
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;
}