mirror of
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9e8ba7891e
This switches zend_type from storing a single IS_* type code to storing a MAY_BE_* type mask. Right now most code still assumes that there is only a single type in the mask (or two together with MAY_BE_NULL). But this will make it a lot simpler to introduce union types. An additional advantage (and why I'm doing this separately), is that a number of special cases no longer need to be handled separately: We can do a single mask & (1 << type) check to handle all simple types, booleans (true|false) and null.
656 lines
13 KiB
Plaintext
656 lines
13 KiB
Plaintext
define set_ts
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set $tsrm_ls = $arg0
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end
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document set_ts
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set the ts resource, it is impossible for gdb to
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call ts_resource_ex while no process is running,
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but we could get the resource from the argument
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of frame info.
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end
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define ____executor_globals
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if basic_functions_module.zts
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if !$tsrm_ls
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set $tsrm_ls = ts_resource_ex(0, 0)
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end
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set $eg = ((zend_executor_globals*) (*((void ***) $tsrm_ls))[executor_globals_id-1])
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set $cg = ((zend_compiler_globals*) (*((void ***) $tsrm_ls))[compiler_globals_id-1])
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set $eg_ptr = $eg
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else
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set $eg = executor_globals
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set $cg = compiler_globals
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set $eg_ptr = (zend_executor_globals*) &executor_globals
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end
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end
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document ____executor_globals
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portable way of accessing executor_globals, set $eg
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this also sets compiler_globals to $cg
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ZTS detection is automatically based on ext/standard module struct
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end
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define print_cvs
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if $argc == 0
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____executor_globals
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set $cv_ex_ptr = $eg.current_execute_data
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else
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set $cv_ex_ptr = (zend_execute_data *)$arg0
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end
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set $cv_count = $cv_ex_ptr.func.op_array.last_var
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set $cv = $cv_ex_ptr.func.op_array.vars
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set $cv_idx = 0
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set $callFrameSize = (sizeof(zend_execute_data) + sizeof(zval) - 1) / sizeof(zval)
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printf "Compiled variables count: %d\n\n", $cv_count
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while $cv_idx < $cv_count
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printf "[%d] '%s'\n", $cv_idx, $cv[$cv_idx].val
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set $zvalue = ((zval *) $cv_ex_ptr) + $callFrameSize + $cv_idx
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printzv $zvalue
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set $cv_idx = $cv_idx + 1
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end
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end
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document print_cvs
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Prints the compiled variables and their values.
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If a zend_execute_data pointer is set this will print the compiled
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variables of that scope. If no parameter is used it will use
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current_execute_data for scope.
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usage: print_cvs [zend_execute_data *]
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end
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define dump_bt
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set $ex = $arg0
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while $ex
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printf "[%p] ", $ex
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set $func = $ex->func
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if $func
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if $ex->This->value.obj
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if $func->common.scope
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printf "%s->", $func->common.scope->name->val
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else
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printf "%s->", $ex->This->value.obj->ce.name->val
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end
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else
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if $func->common.scope
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printf "%s::", $func->common.scope->name->val
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end
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end
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if $func->common.function_name
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printf "%s(", $func->common.function_name->val
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else
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printf "(main"
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end
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set $callFrameSize = (sizeof(zend_execute_data) + sizeof(zval) - 1) / sizeof(zval)
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set $count = $ex->This.u2.num_args
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set $arg = 0
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while $arg < $count
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if $arg > 0
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printf ", "
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end
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set $zvalue = (zval *) $ex + $callFrameSize + $arg
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set $type = $zvalue->u1.v.type
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if $type == 1
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printf "NULL"
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end
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if $type == 2
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printf "false"
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end
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if $type == 3
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printf "true"
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end
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if $type == 4
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printf "%ld", $zvalue->value.lval
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end
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if $type == 5
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printf "%f", $zvalue->value.dval
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end
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if $type == 6
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____print_str $zvalue->value.str->val $zvalue->value.str->len
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end
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if $type == 7
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printf "array(%d)[%p]", $zvalue->value.arr->nNumOfElements, $zvalue
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end
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if $type == 8
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printf "object[%p]", $zvalue
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end
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if $type == 9
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printf "resource(#%d)", $zvalue->value.lval
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end
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if $type == 10
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printf "reference"
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end
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if $type > 10
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printf "unknown type %d", $type
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end
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set $arg = $arg + 1
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end
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printf ") "
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else
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printf "??? "
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end
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if $func != 0
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if $func->type == 2
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printf "%s:%d ", $func->op_array.filename->val, $ex->opline->lineno
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else
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printf "[internal function]"
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end
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end
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set $ex = $ex->prev_execute_data
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printf "\n"
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end
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end
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document dump_bt
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dumps the current execution stack. usage: dump_bt executor_globals.current_execute_data
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end
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define printzv
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set $ind = 1
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____printzv $arg0 0
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end
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document printzv
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prints zval contents
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end
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define ____printzv_contents
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set $zvalue = $arg0
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set $type = $zvalue->u1.v.type
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# 15 == IS_INDIRECT
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if $type > 5 && $type < 12
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printf "(refcount=%d) ", $zvalue->value.counted->gc.refcount
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end
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if $type == 0
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printf "UNDEF"
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end
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if $type == 1
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printf "NULL"
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end
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if $type == 2
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printf "bool: false"
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end
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if $type == 3
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printf "bool: true"
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end
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if $type == 4
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printf "long: %ld", $zvalue->value.lval
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end
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if $type == 5
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printf "double: %f", $zvalue->value.dval
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end
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if $type == 6
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printf "string: %s", $zvalue->value.str->val
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end
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if $type == 7
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printf "array: "
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if ! $arg1
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set $ind = $ind + 1
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____print_ht $zvalue->value.arr 1
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set $ind = $ind - 1
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set $i = $ind
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while $i > 0
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printf " "
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set $i = $i - 1
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end
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end
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set $type = 0
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end
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if $type == 8
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printf "object"
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____executor_globals
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set $handle = $zvalue->value.obj.handle
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set $handlers = $zvalue->value.obj.handlers
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set $zobj = $zvalue->value.obj
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set $cname = $zobj->ce->name->val
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printf "(%s) #%d", $cname, $handle
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if ! $arg1
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if $handlers->get_properties == &zend_std_get_properties
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if $zobj->properties
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printf "\nProperties "
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set $ht = $zobj->properties
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set $ind = $ind + 1
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____print_ht $ht 1
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set $ind = $ind - 1
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set $i = $ind
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while $i > 0
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printf " "
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set $i = $i - 1
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end
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else
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printf " {\n"
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set $ht = &$zobj->ce->properties_info
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set $k = 0
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set $num = $ht->nNumUsed
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while $k < $num
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set $p = (Bucket*)($ht->arData + $k)
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set $name = $p->key
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set $prop = (zend_property_info*)$p->val.value.ptr
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set $val = (zval*)((char*)$zobj + $prop->offset)
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printf "%s => ", $name->val
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printzv $val
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set $k = $k + 1
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end
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end
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end
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end
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set $type = 0
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end
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if $type == 9
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printf "resource: #%d", $zvalue->value.res->handle
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end
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if $type == 10
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printf "reference: "
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____printzv &$zvalue->value.ref->val $arg1
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end
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if $type == 11
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printf "CONSTANT_AST"
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end
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if $type == 12
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printf "CALLABLE"
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end
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if $type == 13
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printf "ITERABLE"
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end
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if $type == 14
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printf "VOID"
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end
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if $type == 15
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printf "indirect: "
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____printzv $zvalue->value.zv $arg1
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end
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if $type == 16
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printf "pointer: %p", $zvalue->value.ptr
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end
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if $type == 17
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printf "_ERROR"
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end
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if $type == 18
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printf "_BOOL"
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end
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if $type == 19
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printf "_NUMBER"
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end
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if $type > 19
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printf "unknown type %d", $type
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end
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printf "\n"
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end
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define ____printzv
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____executor_globals
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set $zvalue = $arg0
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printf "[%p] ", $zvalue
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set $zcontents = (zval*) $zvalue
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if $arg1
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____printzv_contents $zcontents $arg1
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else
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____printzv_contents $zcontents 0
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end
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end
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define print_global_vars
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____executor_globals
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set $symtable = ((HashTable *)&($eg_ptr->symbol_table))
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print_ht $symtable
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end
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document print_global_vars
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Prints the global variables
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end
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define print_const_table
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set $ind = 1
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printf "[%p] {\n", $arg0
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____print_ht $arg0 4
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printf "}\n"
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end
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document print_const_table
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Dumps elements of Constants HashTable
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Example: print_const_table executor_globals.zend_constants
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end
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define ____print_ht
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set $ht = (HashTable*)$arg0
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set $n = $ind
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while $n > 0
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printf " "
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set $n = $n - 1
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end
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if $ht->u.v.flags & 4
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printf "Packed"
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else
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printf "Hash"
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end
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printf "(%d)[%p]: {\n", $ht->nNumOfElements, $ht
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set $num = $ht->nNumUsed
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set $i = 0
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set $ind = $ind + 1
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while $i < $num
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set $p = (Bucket*)($ht->arData + $i)
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set $n = $ind
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if $p->val.u1.v.type > 0
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while $n > 0
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printf " "
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set $n = $n - 1
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end
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printf "[%d] ", $i
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if $p->key
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printf "%s => ", $p->key->val
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else
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printf "%d => ", $p->h
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end
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if $arg1 == 0
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printf "%p\n", (zval *)&$p->val
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end
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if $arg1 == 1
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set $zval = (zval *)&$p->val
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____printzv $zval 1
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end
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if $arg1 == 2
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printf "%s\n", (char*)$p->val.value.ptr
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end
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if $arg1 == 3
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set $func = (zend_function*)$p->val.value.ptr
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printf "\"%s\"\n", $func->common.function_name->val
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end
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if $arg1 == 4
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set $const = (zend_constant *)$p->val.value.ptr
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____printzv $const 1
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end
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end
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set $i = $i + 1
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end
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set $ind = $ind - 1
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printf "}\n"
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end
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define print_ht
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set $ind = 0
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____print_ht $arg0 1
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end
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document print_ht
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dumps elements of HashTable made of zval
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end
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define print_htptr
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set $ind = 0
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____print_ht $arg0 0
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end
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document print_htptr
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dumps elements of HashTable made of pointers
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end
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define print_htstr
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set $ind = 0
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____print_ht $arg0 2
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end
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document print_htstr
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dumps elements of HashTable made of strings
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end
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define print_ft
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set $ind = 0
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____print_ht $arg0 3
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end
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document print_ft
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dumps a function table (HashTable)
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end
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define ____print_inh_class
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set $ce = $arg0
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if $ce->ce_flags & 0x10 || $ce->ce_flags & 0x20
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printf "abstract "
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else
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if $ce->ce_flags & 0x40
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printf "final "
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end
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end
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printf "class %s", $ce->name->val
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if $ce->parent != 0
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printf " extends %s", $ce->parent->name->val
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end
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if $ce->num_interfaces != 0
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printf " implements"
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set $tmp = 0
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while $tmp < $ce->num_interfaces
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printf " %s", $ce->interfaces[$tmp]->name->val
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set $tmp = $tmp + 1
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if $tmp < $ce->num_interfaces
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printf ","
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end
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end
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end
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set $ce = $ce->parent
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end
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define ____print_inh_iface
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set $ce = $arg0
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printf "interface %s", $ce->name->val
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if $ce->num_interfaces != 0
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set $ce = $ce->interfaces[0]
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printf " extends %s", $ce->name->val
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else
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set $ce = 0
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end
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end
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define print_inh
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set $ce = $arg0
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set $depth = 0
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while $ce != 0
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set $tmp = $depth
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while $tmp != 0
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printf " "
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set $tmp = $tmp - 1
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end
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set $depth = $depth + 1
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if $ce->ce_flags & 0x80
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____print_inh_iface $ce
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else
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____print_inh_class $ce
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end
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printf " {\n"
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end
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while $depth != 0
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set $tmp = $depth
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while $tmp != 1
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printf " "
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set $tmp = $tmp - 1
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end
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printf "}\n"
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set $depth = $depth - 1
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end
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end
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define print_pi
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set $pi = (zend_property_info *)$arg0
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set $initial_offset = ((uint32_t)(zend_uintptr_t)(&((zend_object*)0)->properties_table[(0)]))
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set $ptr_to_val = (zval*)((char*)$pi->ce->default_properties_table + $pi->offset - $initial_offset)
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printf "[%p] {\n", $pi
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printf " offset = %p\n", $pi->offset
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printf " ce = [%p] %s\n", $pi->ce, $pi->ce->name->val
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printf " flags = 0x%x (", $pi->flags
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if $pi->flags & 0x100
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printf "ZEND_ACC_PUBLIC"
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else
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if $pi->flags & 0x200
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printf "ZEND_ACC_PROTECTED"
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else
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if $pi->flags & 0x400
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printf "ZEND_ACC_PRIVATE"
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else
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if $pi->flags & 0x800
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printf "ZEND_ACC_EARLY_BINDING"
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else
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if $pi->flags & 0x20000
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printf "ZEND_ACC_SHADOW"
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end
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end
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end
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end
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end
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printf ")\n"
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printf " name = "
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print_zstr $pi->name
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printf " default value: "
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printzv $ptr_to_val
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printf "}\n"
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end
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document print_pi
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Takes a pointer to an object's property and prints the property information
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usage: print_pi <ptr>
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end
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define ____print_str
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set $tmp = 0
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set $str = $arg0
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if $argc > 2
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set $maxlen = $arg2
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else
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set $maxlen = 256
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end
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printf "\""
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while $tmp < $arg1 && $tmp < $maxlen
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if $str[$tmp] > 31 && $str[$tmp] < 127
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printf "%c", $str[$tmp]
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else
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printf "\\%o", $str[$tmp]
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end
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set $tmp = $tmp + 1
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end
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if $tmp != $arg1
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printf "..."
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end
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printf "\""
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end
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define printzn
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____executor_globals
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set $ind = 0
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set $znode = $arg0
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if $znode->op_type == 1
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set $optype = "IS_CONST"
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end
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if $znode->op_type == 2
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set $optype = "IS_TMP_VAR"
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end
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if $znode->op_type == 4
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set $optype = "IS_VAR"
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end
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if $znode->op_type == 8
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set $optype = "IS_UNUSED"
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end
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printf "[%p] %s", $znode, $optype
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if $znode->op_type == 1
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printf ": "
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____printzv &$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 print_zstr
|
|
set $zstr = (zend_string *)$arg0
|
|
if $argc == 2
|
|
set $maxlen = $arg1
|
|
else
|
|
set $maxlen = $zstr->len
|
|
end
|
|
printf "string(%d) ", $zstr->len
|
|
____print_str $zstr->val $zstr->len $maxlen
|
|
printf "\n"
|
|
end
|
|
|
|
document print_zstr
|
|
print the length and contents of a zend string
|
|
usage: print_zstr <ptr> [max length]
|
|
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 lookup_root
|
|
set $found = 0
|
|
if gc_globals->roots
|
|
set $current = gc_globals->roots->next
|
|
printf "looking ref %p in roots\n", $arg0
|
|
while $current != &gc_globals->roots
|
|
if $current->ref == $arg0
|
|
set $found = $current
|
|
break
|
|
end
|
|
set $current = $current->next
|
|
end
|
|
if $found != 0
|
|
printf "found root %p\n", $found
|
|
else
|
|
printf "not found\n"
|
|
end
|
|
end
|
|
end
|
|
|
|
document lookup_root
|
|
lookup a refcounted in root
|
|
usage: lookup_root [ptr].
|
|
end
|