define ____executor_globals if basic_functions_module.zts set $tsrm_ls = ts_resource_ex(0, 0) set $eg = ((zend_executor_globals) (*((void ***) $tsrm_ls))[executor_globals_id-1]) else set $eg = executor_globals end end document ____executor_globals portable way of accessing executor_globals, set $eg ZTS detection is automatically based on ext/standard module struct end define dump_bt set $t = $arg0 while $t printf "[0x%08x] ", $t if $t->function_state.function->common.function_name printf "%s() ", $t->function_state.function->common.function_name else printf "??? " end if $t->op_array != 0 printf "%s:%d ", $t->op_array->filename, $t->opline->lineno end set $t = $t->prev_execute_data printf "\n" end end document dump_bt dumps the current execution stack. usage: dump_bt executor_globals.current_execute_data end define printzv set $ind = 1 ____printzv $arg0 0 end document printzv prints zval contents end define ____printzv_contents set $zvalue = $arg0 set $type = $zvalue->type printf "(refcount=%d", $zvalue->refcount__gc if $zvalue->is_ref__gc printf ",is_ref" end printf ") " if $type == 0 printf "NULL" end if $type == 1 printf "long: %ld", $zvalue->value.lval end if $type == 2 printf "double: %lf", $zvalue->value.dval end if $type == 3 printf "bool: " if $zvalue->value.lval printf "true" else printf "false" end end if $type == 4 printf "array(%d): ", $zvalue->value.ht->nNumOfElements if ! $arg1 printf "{\n" set $ind = $ind + 1 ____print_ht $zvalue->value.ht 1 set $ind = $ind - 1 set $i = $ind while $i > 0 printf " " set $i = $i - 1 end printf "}" end set $type = 0 end if $type == 5 printf "object" ____executor_globals set $handle = $zvalue->value.obj.handle set $handlers = $zvalue->value.obj.handlers if basic_functions_module.zts set $zobj = zend_objects_get_address($zvalue, $tsrm_ls) else set $zobj = zend_objects_get_address($zvalue) end if $handlers->get_class_entry == &zend_std_object_get_class set $cname = $zobj->ce.name else set $cname = "Unknown" end printf "(%s) #%d", $cname, $handle if ! $arg1 if $handlers->get_properties == &zend_std_get_properties set $ht = $zobj->properties if $ht printf "(%d): ", $ht->nNumOfElements printf "{\n" set $ind = $ind + 1 ____print_ht $ht 1 set $ind = $ind - 1 set $i = $ind while $i > 0 printf " " set $i = $i - 1 end printf "}" else echo "no properties found" end end end set $type = 0 end if $type == 6 printf "string(%d): ", $zvalue->value.str.len ____print_str $zvalue->value.str.val $zvalue->value.str.len end if $type == 7 printf "resource: #%d", $zvalue->value.lval end if $type == 8 printf "constant" end if $type == 9 printf "const_array" end if $type > 9 printf "unknown type %d", $type end printf "\n" end define ____printzv ____executor_globals set $zvalue = $arg0 printf "[0x%08x] ", $zvalue if $zvalue == $eg.uninitialized_zval_ptr printf "*uninitialized* " end set $zcontents = (zval*) $zvalue if $arg1 ____printzv_contents $zcontents $arg1 else ____printzv_contents $zcontents 0 end end define ____print_const_table set $ht = $arg0 set $p = $ht->pListHead while $p != 0 set $const = (zend_constant *) $p->pData set $i = $ind while $i > 0 printf " " set $i = $i - 1 end if $p->nKeyLength > 0 ____print_str $p->arKey $p->nKeyLength printf " => " else printf "%d => ", $p->h end ____printzv_contents &$const->value 0 set $p = $p->pListNext end end define print_const_table set $ind = 1 printf "[0x%08x] {\n", $arg0 ____print_const_table $arg0 printf "}\n" end define ____print_ht set $ht = (HashTable*)$arg0 set $p = $ht->pListHead while $p != 0 set $i = $ind while $i > 0 printf " " set $i = $i - 1 end if $p->nKeyLength > 0 ____print_str $p->arKey $p->nKeyLength printf " => " else printf "%d => ", $p->h end if $arg1 == 0 printf "%p\n", (void*)$p->pData end if $arg1 == 1 set $zval = *(zval **)$p->pData ____printzv $zval 1 end if $arg1 == 2 printf "%s\n", (char*)$p->pData end set $p = $p->pListNext end end define print_ht set $ind = 1 printf "[0x%08x] {\n", $arg0 ____print_ht $arg0 1 printf "}\n" end document print_ht dumps elements of HashTable made of zval end define print_htptr set $ind = 1 printf "[0x%08x] {\n", $arg0 ____print_ht $arg0 0 printf "}\n" end document print_htptr dumps elements of HashTable made of pointers end define print_htstr set $ind = 1 printf "[0x%08x] {\n", $arg0 ____print_ht $arg0 2 printf "}\n" end document print_htstr dumps elements of HashTable made of strings end define ____print_ft set $ht = $arg0 set $p = $ht->pListHead while $p != 0 set $func = (zend_function*)$p->pData set $i = $ind while $i > 0 printf " " set $i = $i - 1 end if $p->nKeyLength > 0 ____print_str $p->arKey $p->nKeyLength printf " => " else printf "%d => ", $p->h end printf "\"%s\"\n", $func->common.function_name set $p = $p->pListNext end end define print_ft set $ind = 1 printf "[0x%08x] {\n", $arg0 ____print_ft $arg0 printf "}\n" end document print_ft dumps a function table (HashTable) end define ____print_inh_class set $ce = $arg0 if $ce->ce_flags & 0x10 || $ce->ce_flags & 0x20 printf "abstract " else if $ce->ce_flags & 0x40 printf "final " end end printf "class %s", $ce->name if $ce->parent != 0 printf " extends %s", $ce->parent->name end if $ce->num_interfaces != 0 printf " implements" set $tmp = 0 while $tmp < $ce->num_interfaces printf " %s", $ce->interfaces[$tmp]->name set $tmp = $tmp + 1 if $tmp < $ce->num_interfaces printf "," end end end set $ce = $ce->parent end define ____print_inh_iface set $ce = $arg0 printf "interface %s", $ce->name if $ce->num_interfaces != 0 set $ce = $ce->interfaces[0] printf " extends %s", $ce->name else set $ce = 0 end end define print_inh set $ce = $arg0 set $depth = 0 while $ce != 0 set $tmp = $depth while $tmp != 0 printf " " set $tmp = $tmp - 1 end set $depth = $depth + 1 if $ce->ce_flags & 0x80 ____print_inh_iface $ce else ____print_inh_class $ce end printf " {\n" end while $depth != 0 set $tmp = $depth while $tmp != 1 printf " " set $tmp = $tmp - 1 end printf "}\n" set $depth = $depth - 1 end end define print_pi set $pi = $arg0 printf "[0x%08x] {\n", $pi printf " h = %lu\n", $pi->h printf " flags = %d (", $pi->flags if $pi->flags & 0x100 printf "ZEND_ACC_PUBLIC" else if $pi->flags & 0x200 printf "ZEND_ACC_PROTECTED" else if $pi->flags & 0x400 printf "ZEND_ACC_PRIVATE" else if $pi->flags & 0x800 printf "ZEND_ACC_CHANGED" end end end end printf ")\n" printf " name = " ____print_str $pi->name $pi->name_length printf "\n}\n" end define ____print_str set $tmp = 0 set $str = $arg0 printf "\"" while $tmp < $arg1 if $str[$tmp] > 32 && $str[$tmp] < 127 printf "%c", $str[$tmp] else printf "\\%o", $str[$tmp] end set $tmp = $tmp + 1 end printf "\"" end define printzn ____executor_globals set $ind = 0 set $znode = $arg0 if $znode->op_type == 1 set $optype = "IS_CONST" end if $znode->op_type == 2 set $optype = "IS_TMP_VAR" end if $znode->op_type == 4 set $optype = "IS_VAR" end if $znode->op_type == 8 set $optype = "IS_UNUSED" end printf "[0x%08x] %s", $znode, $optype if $znode->op_type == 1 printf ": " ____printzv &$znode->u.constant 0 end if $znode->op_type == 2 printf ": " set $tvar = (union _temp_variable *)((char *)$eg.current_execute_data->Ts + $znode->u.var) ____printzv ((union _temp_variable *)$tvar)->tmp_var 0 end if $znode->op_type == 4 printf ": " set $tvar = (union _temp_variable *)((char *)$eg.current_execute_data->Ts + $znode->u.var) ____printzv *$tvar->var.ptr_ptr 0 end if $znode->op_type == 8 printf "\n" end end document printzn print type and content of znode. usage: printzn &opline->op1 end define printzops printf "op1 => " printzn &execute_data->opline.op1 printf "op2 => " printzn &execute_data->opline.op2 printf "result => " printzn &execute_data->opline.result end document printzops dump operands of the current opline end define zbacktrace ____executor_globals dump_bt $eg.current_execute_data end document zbacktrace prints backtrace. This command is almost a short cut for > (gdb) ____executor_globals > (gdb) dump_bt $eg.current_execute_data end define zmemcheck set $p = alloc_globals.head set $stat = "?" set $total_size = 0 if $arg0 != 0 set $not_found = 1 else set $not_found = 0 end printf " block size status file:line\n" printf "-------------------------------------------------------------------------------\n" while $p set $aptr = $p + sizeof(struct _zend_mem_header) + sizeof(align_test) if $arg0 == 0 || (void *)$aptr == (void *)$arg0 if $p->magic == 0x7312f8dc set $stat = "OK" end if $p->magic == 0x99954317 set $stat = "FREED" end if $p->magic == 0xfb8277dc set $stat = "CACHED" end set $filename = strrchr($p->filename, '/') if !$filename set $filename = $p->filename else set $filename = $filename + 1 end printf " 0x%08x ", $aptr if $p->size == sizeof(struct _zval_struct) && ((struct _zval_struct *)$aptr)->type >= 0 && ((struct _zval_struct *)$aptr)->type < 10 printf "ZVAL?(%-2d) ", $p->size else printf "%-9d ", $p->size end set $total_size = $total_size + $p->size printf "%-06s %s:%d", $stat, $filename, $p->lineno if $p->orig_filename set $orig_filename = strrchr($p->orig_filename, '/') if !$orig_filename set $orig_filename = $p->orig_filename else set $orig_filename = $orig_filename + 1 end printf " <= %s:%d\n", $orig_filename, $p->orig_lineno else printf "\n" end if $arg0 != 0 set $p = 0 set $not_found = 0 else set $p = $p->pNext end else set $p = $p->pNext end end if $not_found printf "no such block that begins at 0x%08x.\n", $aptr end if $arg0 == 0 printf "-------------------------------------------------------------------------------\n" printf " total: %d bytes\n", $total_size end end document zmemcheck show status of a memory block. usage: zmemcheck [ptr]. if ptr is 0, all blocks will be listed. end