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zend_dump.c
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/*
+----------------------------------------------------------------------+
| Zend Engine, Bytecode Visualisation |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2017 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Dmitry Stogov <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "zend_compile.h"
#include "zend_cfg.h"
#include "zend_ssa.h"
#include "zend_inference.h"
#include "zend_func_info.h"
#include "zend_call_graph.h"
#include "zend_dump.h"
void zend_dump_ht(HashTable *ht)
{
zend_ulong index;
zend_string *key;
zval *val;
int first = 1;
ZEND_HASH_FOREACH_KEY_VAL(ht, index, key, val) {
if (first) {
first = 0;
} else {
fprintf(stderr, ", ");
}
if (key) {
fprintf(stderr, "\"%s\"", ZSTR_VAL(key));
} else {
fprintf(stderr, ZEND_LONG_FMT, index);
}
fprintf(stderr, " =>");
zend_dump_const(val);
} ZEND_HASH_FOREACH_END();
}
void zend_dump_const(const zval *zv)
{
switch (Z_TYPE_P(zv)) {
case IS_NULL:
fprintf(stderr, " null");
break;
case IS_FALSE:
fprintf(stderr, " bool(false)");
break;
case IS_TRUE:
fprintf(stderr, " bool(true)");
break;
case IS_LONG:
fprintf(stderr, " int(" ZEND_LONG_FMT ")", Z_LVAL_P(zv));
break;
case IS_DOUBLE:
fprintf(stderr, " float(%g)", Z_DVAL_P(zv));
break;
case IS_STRING:
fprintf(stderr, " string(\"%s\")", Z_STRVAL_P(zv));
break;
case IS_ARRAY:
fprintf(stderr, " array(...)");
break;
default:
fprintf(stderr, " zval(type=%d)", Z_TYPE_P(zv));
break;
}
}
static void zend_dump_class_fetch_type(uint32_t fetch_type)
{
switch (fetch_type & ZEND_FETCH_CLASS_MASK) {
case ZEND_FETCH_CLASS_SELF:
fprintf(stderr, " (self)");
break;
case ZEND_FETCH_CLASS_PARENT:
fprintf(stderr, " (parent)");
break;
case ZEND_FETCH_CLASS_STATIC:
fprintf(stderr, " (static)");
break;
case ZEND_FETCH_CLASS_AUTO:
fprintf(stderr, " (auto)");
break;
case ZEND_FETCH_CLASS_INTERFACE:
fprintf(stderr, " (interface)");
break;
case ZEND_FETCH_CLASS_TRAIT:
fprintf(stderr, " (trait)");
break;
}
if (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) {
fprintf(stderr, " (no-autolod)");
}
if (fetch_type & ZEND_FETCH_CLASS_SILENT) {
fprintf(stderr, " (silent)");
}
if (fetch_type & ZEND_FETCH_CLASS_EXCEPTION) {
fprintf(stderr, " (exception)");
}
}
static void zend_dump_unused_op(const zend_op *opline, znode_op op, uint32_t flags) {
if (ZEND_VM_OP_NUM == (flags & ZEND_VM_OP_MASK)) {
fprintf(stderr, " %u", op.num);
} else if (ZEND_VM_OP_TRY_CATCH == (flags & ZEND_VM_OP_MASK)) {
if (op.num != (uint32_t)-1) {
fprintf(stderr, " try-catch(%u)", op.num);
}
} else if (ZEND_VM_OP_LIVE_RANGE == (flags & ZEND_VM_OP_MASK)) {
if (opline->extended_value & ZEND_FREE_ON_RETURN) {
fprintf(stderr, " live-range(%u)", op.num);
}
} else if (ZEND_VM_OP_THIS == (flags & ZEND_VM_OP_MASK)) {
fprintf(stderr, " THIS");
} else if (ZEND_VM_OP_NEXT == (flags & ZEND_VM_OP_MASK)) {
fprintf(stderr, " NEXT");
} else if (ZEND_VM_OP_CLASS_FETCH == (flags & ZEND_VM_OP_MASK)) {
zend_dump_class_fetch_type(op.num);
} else if (ZEND_VM_OP_CONSTRUCTOR == (flags & ZEND_VM_OP_MASK)) {
fprintf(stderr, " CONSTRUCTOR");
}
}
void zend_dump_var(const zend_op_array *op_array, zend_uchar var_type, int var_num)
{
if (var_type == IS_CV && var_num < op_array->last_var) {
fprintf(stderr, "CV%d($%s)", var_num, op_array->vars[var_num]->val);
} else if (var_type == IS_VAR) {
fprintf(stderr, "V%d", var_num);
} else if (var_type == IS_TMP_VAR) {
fprintf(stderr, "T%d", var_num);
} else {
fprintf(stderr, "X%d", var_num);
}
}
static void zend_dump_range(const zend_ssa_range *r)
{
if (r->underflow && r->overflow) {
return;
}
fprintf(stderr, " RANGE[");
if (r->underflow) {
fprintf(stderr, "--..");
} else {
fprintf(stderr, ZEND_LONG_FMT "..", r->min);
}
if (r->overflow) {
fprintf(stderr, "++]");
} else {
fprintf(stderr, ZEND_LONG_FMT "]", r->max);
}
}
static void zend_dump_type_info(uint32_t info, zend_class_entry *ce, int is_instanceof, uint32_t dump_flags)
{
int first = 1;
fprintf(stderr, " [");
if (info & MAY_BE_UNDEF) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "undef");
}
if (info & MAY_BE_REF) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "ref");
}
if (dump_flags & ZEND_DUMP_RC_INFERENCE) {
if (info & MAY_BE_RC1) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "rc1");
}
if (info & MAY_BE_RCN) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "rcn");
}
}
if (info & MAY_BE_CLASS) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "class");
if (ce) {
if (is_instanceof) {
fprintf(stderr, " (instanceof %s)", ce->name->val);
} else {
fprintf(stderr, " (%s)", ce->name->val);
}
}
} else if ((info & MAY_BE_ANY) == MAY_BE_ANY) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "any");
} else {
if (info & MAY_BE_NULL) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "null");
}
if ((info & MAY_BE_FALSE) && (info & MAY_BE_TRUE)) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "bool");
} else if (info & MAY_BE_FALSE) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "false");
} else if (info & MAY_BE_TRUE) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "true");
}
if (info & MAY_BE_LONG) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "long");
}
if (info & MAY_BE_DOUBLE) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "double");
}
if (info & MAY_BE_STRING) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "string");
}
if (info & MAY_BE_ARRAY) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "array");
if ((info & MAY_BE_ARRAY_KEY_ANY) != 0 &&
(info & MAY_BE_ARRAY_KEY_ANY) != MAY_BE_ARRAY_KEY_ANY) {
int afirst = 1;
fprintf(stderr, " [");
if (info & MAY_BE_ARRAY_KEY_LONG) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "long");
}
if (info & MAY_BE_ARRAY_KEY_STRING) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "string");
}
fprintf(stderr, "]");
}
if (info & (MAY_BE_ARRAY_OF_ANY|MAY_BE_ARRAY_OF_REF)) {
int afirst = 1;
fprintf(stderr, " of [");
if ((info & MAY_BE_ARRAY_OF_ANY) == MAY_BE_ARRAY_OF_ANY) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "any");
} else {
if (info & MAY_BE_ARRAY_OF_NULL) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "null");
}
if (info & MAY_BE_ARRAY_OF_FALSE) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "false");
}
if (info & MAY_BE_ARRAY_OF_TRUE) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "true");
}
if (info & MAY_BE_ARRAY_OF_LONG) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "long");
}
if (info & MAY_BE_ARRAY_OF_DOUBLE) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "double");
}
if (info & MAY_BE_ARRAY_OF_STRING) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "string");
}
if (info & MAY_BE_ARRAY_OF_ARRAY) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "array");
}
if (info & MAY_BE_ARRAY_OF_OBJECT) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "object");
}
if (info & MAY_BE_ARRAY_OF_RESOURCE) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "resource");
}
}
if (info & MAY_BE_ARRAY_OF_REF) {
if (afirst) afirst = 0; else fprintf(stderr, ", ");
fprintf(stderr, "ref");
}
fprintf(stderr, "]");
}
}
if (info & MAY_BE_OBJECT) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "object");
if (ce) {
if (is_instanceof) {
fprintf(stderr, " (instanceof %s)", ce->name->val);
} else {
fprintf(stderr, " (%s)", ce->name->val);
}
}
}
if (info & MAY_BE_RESOURCE) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "resource");
}
}
if (info & MAY_BE_ERROR) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "error");
}
//TODO: this is useful only for JIT???
if (info & MAY_BE_IN_REG) {
if (first) first = 0; else fprintf(stderr, ", ");
fprintf(stderr, "reg");
}
fprintf(stderr, "]");
}
static void zend_dump_ssa_var_info(const zend_ssa *ssa, int ssa_var_num, uint32_t dump_flags)
{
zend_dump_type_info(
ssa->var_info[ssa_var_num].type,
ssa->var_info[ssa_var_num].ce,
ssa->var_info[ssa_var_num].ce ?
ssa->var_info[ssa_var_num].is_instanceof : 0,
dump_flags);
}
static void zend_dump_ssa_var(const zend_op_array *op_array, const zend_ssa *ssa, int ssa_var_num, zend_uchar var_type, int var_num, uint32_t dump_flags)
{
if (ssa_var_num >= 0) {
fprintf(stderr, "#%d.", ssa_var_num);
} else {
fprintf(stderr, "#?.");
}
zend_dump_var(op_array, (var_num < op_array->last_var ? IS_CV : var_type), var_num);
if (ssa_var_num >= 0 && ssa->vars) {
if (ssa->vars[ssa_var_num].no_val) {
fprintf(stderr, " NOVAL");
}
if (ssa->vars[ssa_var_num].escape_state == ESCAPE_STATE_NO_ESCAPE) {
fprintf(stderr, " NOESC");
}
if (ssa->var_info) {
zend_dump_ssa_var_info(ssa, ssa_var_num, dump_flags);
if (ssa->var_info[ssa_var_num].has_range) {
zend_dump_range(&ssa->var_info[ssa_var_num].range);
}
}
}
}
static void zend_dump_type_constraint(const zend_op_array *op_array, const zend_ssa *ssa, const zend_ssa_type_constraint *constraint, uint32_t dump_flags)
{
fprintf(stderr, " TYPE");
zend_dump_type_info(constraint->type_mask, constraint->ce, 1, dump_flags);
}
static void zend_dump_range_constraint(const zend_op_array *op_array, const zend_ssa *ssa, const zend_ssa_range_constraint *r, uint32_t dump_flags)
{
if (r->range.underflow && r->range.overflow) {
return;
}
fprintf(stderr, " RANGE");
if (r->negative) {
fprintf(stderr, "~");
}
fprintf(stderr, "[");
if (r->range.underflow) {
fprintf(stderr, "-- .. ");
} else {
if (r->min_ssa_var >= 0) {
zend_dump_ssa_var(op_array, ssa, r->min_ssa_var, (r->min_var < op_array->last_var ? IS_CV : 0), r->min_var, dump_flags);
if (r->range.min > 0) {
fprintf(stderr, " + " ZEND_LONG_FMT, r->range.min);
} else if (r->range.min < 0) {
fprintf(stderr, " - " ZEND_LONG_FMT, -r->range.min);
}
fprintf(stderr, " .. ");
} else {
fprintf(stderr, ZEND_LONG_FMT " .. ", r->range.min);
}
}
if (r->range.overflow) {
fprintf(stderr, "++]");
} else {
if (r->max_ssa_var >= 0) {
zend_dump_ssa_var(op_array, ssa, r->max_ssa_var, (r->max_var < op_array->last_var ? IS_CV : 0), r->max_var, dump_flags);
if (r->range.max > 0) {
fprintf(stderr, " + " ZEND_LONG_FMT, r->range.max);
} else if (r->range.max < 0) {
fprintf(stderr, " - " ZEND_LONG_FMT, -r->range.max);
}
fprintf(stderr, "]");
} else {
fprintf(stderr, ZEND_LONG_FMT "]", r->range.max);
}
}
}
static void zend_dump_op(const zend_op_array *op_array, const zend_basic_block *b, const zend_op *opline, uint32_t dump_flags, const void *data)
{
const char *name = zend_get_opcode_name(opline->opcode);
uint32_t flags = zend_get_opcode_flags(opline->opcode);
uint32_t n = 0;
int len = 0;
const zend_ssa *ssa = NULL;
if (dump_flags & ZEND_DUMP_SSA) {
ssa = (const zend_ssa*)data;
}
if (!b) {
len = fprintf(stderr, "L%u:", (uint32_t)(opline - op_array->opcodes));
}
fprintf(stderr, "%*c", 8-len, ' ');
if (!ssa || !ssa->ops || ssa->ops[opline - op_array->opcodes].result_use < 0) {
if (opline->result_type & (IS_CV|IS_VAR|IS_TMP_VAR)) {
if (ssa && ssa->ops && ssa->ops[opline - op_array->opcodes].result_def >= 0) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].result_def;
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->result_type, EX_VAR_TO_NUM(opline->result.var), dump_flags);
} else {
zend_dump_var(op_array, opline->result_type, EX_VAR_TO_NUM(opline->result.var));
}
fprintf(stderr, " = ");
}
}
if (name) {
fprintf(stderr, "%s", (name + 5));
} else {
fprintf(stderr, "OP_%d", (int)opline->opcode);
}
if (ZEND_VM_EXT_NUM == (flags & ZEND_VM_EXT_MASK)) {
fprintf(stderr, " %u", opline->extended_value);
} else if (ZEND_VM_EXT_DIM_OBJ == (flags & ZEND_VM_EXT_MASK)) {
if (opline->extended_value == ZEND_ASSIGN_DIM) {
fprintf(stderr, " (dim)");
} else if (opline->extended_value == ZEND_ASSIGN_OBJ) {
fprintf(stderr, " (obj)");
}
} else if (ZEND_VM_EXT_CLASS_FETCH == (flags & ZEND_VM_EXT_MASK)) {
zend_dump_class_fetch_type(opline->extended_value);
} else if (ZEND_VM_EXT_CONST_FETCH == (flags & ZEND_VM_EXT_MASK)) {
if (opline->extended_value & IS_CONSTANT_UNQUALIFIED) {
fprintf(stderr, " (unqualified)");
}
if (opline->extended_value & IS_CONSTANT_CLASS) {
fprintf(stderr, " (__class__)");
}
if (opline->extended_value & IS_CONSTANT_IN_NAMESPACE) {
fprintf(stderr, " (in-namespace)");
}
} else if (ZEND_VM_EXT_TYPE == (flags & ZEND_VM_EXT_MASK)) {
switch (opline->extended_value) {
case IS_NULL:
fprintf(stderr, " (null)");
break;
case IS_FALSE:
fprintf(stderr, " (false)");
break;
case IS_TRUE:
fprintf(stderr, " (true)");
break;
case IS_LONG:
fprintf(stderr, " (long)");
break;
case IS_DOUBLE:
fprintf(stderr, " (double)");
break;
case IS_STRING:
fprintf(stderr, " (string)");
break;
case IS_ARRAY:
fprintf(stderr, " (array)");
break;
case IS_OBJECT:
fprintf(stderr, " (object)");
break;
case IS_RESOURCE:
fprintf(stderr, " (resource)");
break;
case _IS_BOOL:
fprintf(stderr, " (bool)");
break;
case IS_CALLABLE:
fprintf(stderr, " (callable)");
break;
case IS_VOID:
fprintf(stderr, " (void)");
break;
default:
fprintf(stderr, " (\?\?\?)");
break;
}
} else if (ZEND_VM_EXT_EVAL == (flags & ZEND_VM_EXT_MASK)) {
switch (opline->extended_value) {
case ZEND_EVAL:
fprintf(stderr, " (eval)");
break;
case ZEND_INCLUDE:
fprintf(stderr, " (include)");
break;
case ZEND_INCLUDE_ONCE:
fprintf(stderr, " (include_once)");
break;
case ZEND_REQUIRE:
fprintf(stderr, " (require)");
break;
case ZEND_REQUIRE_ONCE:
fprintf(stderr, " (require_once)");
break;
default:
fprintf(stderr, " (\?\?\?)");
break;
}
} else if (ZEND_VM_EXT_SRC == (flags & ZEND_VM_EXT_MASK)) {
if (opline->extended_value == ZEND_RETURNS_VALUE) {
fprintf(stderr, " (value)");
} else if (opline->extended_value == ZEND_RETURNS_FUNCTION) {
fprintf(stderr, " (function)");
}
} else {
if (ZEND_VM_EXT_VAR_FETCH & flags) {
switch (opline->extended_value & ZEND_FETCH_TYPE_MASK) {
case ZEND_FETCH_GLOBAL:
fprintf(stderr, " (global)");
break;
case ZEND_FETCH_LOCAL:
fprintf(stderr, " (local)");
break;
case ZEND_FETCH_GLOBAL_LOCK:
fprintf(stderr, " (global+lock)");
break;
}
}
if (ZEND_VM_EXT_ISSET & flags) {
if (opline->extended_value & ZEND_ISSET) {
fprintf(stderr, " (isset)");
} else if (opline->extended_value & ZEND_ISEMPTY) {
fprintf(stderr, " (empty)");
}
}
if (ZEND_VM_EXT_ARG_NUM & flags) {
fprintf(stderr, " %u", opline->extended_value & ZEND_FETCH_ARG_MASK);
}
if (ZEND_VM_EXT_ARRAY_INIT & flags) {
fprintf(stderr, " %u", opline->extended_value >> ZEND_ARRAY_SIZE_SHIFT);
if (!(opline->extended_value & ZEND_ARRAY_NOT_PACKED)) {
fprintf(stderr, " (packed)");
}
}
if (ZEND_VM_EXT_REF & flags) {
if (opline->extended_value & ZEND_ARRAY_ELEMENT_REF) {
fprintf(stderr, " (ref)");
}
}
}
if (opline->op1_type == IS_CONST) {
zend_dump_const(CRT_CONSTANT_EX(op_array, opline->op1, (dump_flags & ZEND_DUMP_RT_CONSTANTS)));
} else if (opline->op1_type & (IS_CV|IS_VAR|IS_TMP_VAR)) {
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].op1_use;
if (ssa_var_num >= 0) {
fprintf(stderr, " ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->op1_type, EX_VAR_TO_NUM(opline->op1.var), dump_flags);
} else if (ssa->ops[opline - op_array->opcodes].op1_def < 0) {
fprintf(stderr, " ");
zend_dump_var(op_array, opline->op1_type, EX_VAR_TO_NUM(opline->op1.var));
}
} else {
fprintf(stderr, " ");
zend_dump_var(op_array, opline->op1_type, EX_VAR_TO_NUM(opline->op1.var));
}
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].op1_def;
if (ssa_var_num >= 0) {
fprintf(stderr, " -> ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->op1_type, EX_VAR_TO_NUM(opline->op1.var), dump_flags);
}
}
} else {
uint32_t op1_flags = ZEND_VM_OP1_FLAGS(flags);
if (ZEND_VM_OP_JMP_ADDR == (op1_flags & ZEND_VM_OP_MASK)) {
if (b) {
fprintf(stderr, " BB%d", b->successors[n++]);
} else {
fprintf(stderr, " L%u", (uint32_t)(OP_JMP_ADDR(opline, opline->op1) - op_array->opcodes));
}
} else {
zend_dump_unused_op(opline, opline->op1, op1_flags);
}
}
if (opline->op2_type == IS_CONST) {
zval *op = CRT_CONSTANT_EX(op_array, opline->op2, (dump_flags & ZEND_DUMP_RT_CONSTANTS));
if (opline->opcode == ZEND_SWITCH_LONG || opline->opcode == ZEND_SWITCH_STRING) {
HashTable *jumptable = Z_ARRVAL_P(op);
zend_string *key;
zend_ulong num_key;
zval *zv;
ZEND_HASH_FOREACH_KEY_VAL(jumptable, num_key, key, zv) {
if (key) {
fprintf(stderr, " \"%s\":", ZSTR_VAL(key));
} else {
fprintf(stderr, " " ZEND_LONG_FMT ":", num_key);
}
if (b) {
fprintf(stderr, " BB%d,", b->successors[n++]);
} else {
fprintf(stderr, " L%u,", (uint32_t)ZEND_OFFSET_TO_OPLINE_NUM(op_array, opline, Z_LVAL_P(zv)));
}
} ZEND_HASH_FOREACH_END();
fprintf(stderr, " default:");
} else {
zend_dump_const(op);
}
} else if (opline->op2_type & (IS_CV|IS_VAR|IS_TMP_VAR)) {
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].op2_use;
if (ssa_var_num >= 0) {
fprintf(stderr, " ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->op2_type, EX_VAR_TO_NUM(opline->op2.var), dump_flags);
} else if (ssa->ops[opline - op_array->opcodes].op2_def < 0) {
fprintf(stderr, " ");
zend_dump_var(op_array, opline->op2_type, EX_VAR_TO_NUM(opline->op2.var));
}
} else {
fprintf(stderr, " ");
zend_dump_var(op_array, opline->op2_type, EX_VAR_TO_NUM(opline->op2.var));
}
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].op2_def;
if (ssa_var_num >= 0) {
fprintf(stderr, " -> ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->op2_type, EX_VAR_TO_NUM(opline->op2.var), dump_flags);
}
}
} else {
uint32_t op2_flags = ZEND_VM_OP2_FLAGS(flags);
if (ZEND_VM_OP_JMP_ADDR == (op2_flags & ZEND_VM_OP_MASK)) {
if (b) {
fprintf(stderr, " BB%d", b->successors[n++]);
} else {
fprintf(stderr, " L%u", (uint32_t)(OP_JMP_ADDR(opline, opline->op2) - op_array->opcodes));
}
} else {
zend_dump_unused_op(opline, opline->op2, op2_flags);
}
}
if (ZEND_VM_EXT_JMP_ADDR == (flags & ZEND_VM_EXT_MASK)) {
if (opline->opcode != ZEND_CATCH || !opline->result.num) {
if (b) {
fprintf(stderr, " BB%d", b->successors[n++]);
} else {
fprintf(stderr, " L%u", (uint32_t)ZEND_OFFSET_TO_OPLINE_NUM(op_array, opline, opline->extended_value));
}
}
}
if (opline->result_type == IS_CONST) {
zend_dump_const(CRT_CONSTANT_EX(op_array, opline->result, (dump_flags & ZEND_DUMP_RT_CONSTANTS)));
} else if (ssa && ssa->ops && ssa->ops[opline - op_array->opcodes].result_use >= 0) {
if (opline->result_type & (IS_CV|IS_VAR|IS_TMP_VAR)) {
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].result_use;
if (ssa_var_num >= 0) {
fprintf(stderr, " ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->result_type, EX_VAR_TO_NUM(opline->result.var), dump_flags);
}
} else {
fprintf(stderr, " ");
zend_dump_var(op_array, opline->result_type, EX_VAR_TO_NUM(opline->result.var));
}
if (ssa && ssa->ops) {
int ssa_var_num = ssa->ops[opline - op_array->opcodes].result_def;
if (ssa_var_num >= 0) {
fprintf(stderr, " -> ");
zend_dump_ssa_var(op_array, ssa, ssa_var_num, opline->result_type, EX_VAR_TO_NUM(opline->result.var), dump_flags);
}
}
}
}
fprintf(stderr, "\n");
}
static void zend_dump_block_info(const zend_cfg *cfg, int n, uint32_t dump_flags)
{
zend_basic_block *b = cfg->blocks + n;
fprintf(stderr, "BB%d:", n);
if (b->flags & ZEND_BB_START) {
fprintf(stderr, " start");
}
if (b->flags & ZEND_BB_FOLLOW) {
fprintf(stderr, " follow");
}
if (b->flags & ZEND_BB_TARGET) {
fprintf(stderr, " target");
}
if (b->flags & ZEND_BB_EXIT) {
fprintf(stderr, " exit");
}
if (b->flags & (ZEND_BB_ENTRY|ZEND_BB_RECV_ENTRY)) {
fprintf(stderr, " entry");
}
if (b->flags & ZEND_BB_TRY) {
fprintf(stderr, " try");
}
if (b->flags & ZEND_BB_CATCH) {
fprintf(stderr, " catch");
}
if (b->flags & ZEND_BB_FINALLY) {
fprintf(stderr, " finally");
}
if (b->flags & ZEND_BB_FINALLY_END) {
fprintf(stderr, " finally_end");
}
if (b->flags & ZEND_BB_GEN_VAR) {
fprintf(stderr, " gen_var");
}
if (b->flags & ZEND_BB_KILL_VAR) {
fprintf(stderr, " kill_var");
}
if (!(dump_flags & ZEND_DUMP_HIDE_UNREACHABLE) & !(b->flags & ZEND_BB_REACHABLE)) {
fprintf(stderr, " unreachable");
}
if (b->flags & ZEND_BB_LOOP_HEADER) {
fprintf(stderr, " loop_header");
}
if (b->flags & ZEND_BB_IRREDUCIBLE_LOOP) {
fprintf(stderr, " irreducible");
}
if (b->len != 0) {
fprintf(stderr, " lines=[%d-%d]", b->start, b->start + b->len - 1);
} else {
fprintf(stderr, " empty");
}
fprintf(stderr, "\n");
if (b->predecessors_count) {
int *p = cfg->predecessors + b->predecessor_offset;
int *end = p + b->predecessors_count;
fprintf(stderr, " ; from=(BB%d", *p);
for (p++; p < end; p++) {
fprintf(stderr, ", BB%d", *p);
}
fprintf(stderr, ")\n");
}
if (b->successors_count > 0) {
int s;
fprintf(stderr, " ; to=(BB%d", b->successors[0]);
for (s = 1; s < b->successors_count; s++) {
fprintf(stderr, ", BB%d", b->successors[s]);
}
fprintf(stderr, ")\n");
}
if (b->idom >= 0) {
fprintf(stderr, " ; idom=BB%d\n", b->idom);
}
if (b->level >= 0) {
fprintf(stderr, " ; level=%d\n", b->level);
}
if (b->loop_header >= 0) {
fprintf(stderr, " ; loop_header=%d\n", b->loop_header);
}
if (b->children >= 0) {
int j = b->children;
fprintf(stderr, " ; children=(BB%d", j);
j = cfg->blocks[j].next_child;
while (j >= 0) {
fprintf(stderr, ", BB%d", j);
j = cfg->blocks[j].next_child;
}
fprintf(stderr, ")\n");
}
}
static void zend_dump_block_header(const zend_cfg *cfg, const zend_op_array *op_array, const zend_ssa *ssa, int n, uint32_t dump_flags)
{
zend_dump_block_info(cfg, n, dump_flags);
if (ssa && ssa->blocks && ssa->blocks[n].phis) {
zend_ssa_phi *p = ssa->blocks[n].phis;
do {
int j;
fprintf(stderr, " ");
zend_dump_ssa_var(op_array, ssa, p->ssa_var, 0, p->var, dump_flags);
if (p->pi < 0) {
fprintf(stderr, " = Phi(");
for (j = 0; j < cfg->blocks[n].predecessors_count; j++) {
if (j > 0) {
fprintf(stderr, ", ");
}
zend_dump_ssa_var(op_array, ssa, p->sources[j], 0, p->var, dump_flags);
}
fprintf(stderr, ")\n");
} else {
fprintf(stderr, " = Pi<BB%d>(", p->pi);
zend_dump_ssa_var(op_array, ssa, p->sources[0], 0, p->var, dump_flags);
fprintf(stderr, " &");
if (p->has_range_constraint) {
zend_dump_range_constraint(op_array, ssa, &p->constraint.range, dump_flags);
} else {
zend_dump_type_constraint(op_array, ssa, &p->constraint.type, dump_flags);
}
fprintf(stderr, ")\n");
}
p = p->next;
} while (p);
}
}
void zend_dump_op_array_name(const zend_op_array *op_array)
{
zend_func_info *func_info = NULL;
func_info = ZEND_FUNC_INFO(op_array);
if (op_array->function_name) {
if (op_array->scope && op_array->scope->name) {
fprintf(stderr, "%s::%s", op_array->scope->name->val, op_array->function_name->val);
} else {
fprintf(stderr, "%s", op_array->function_name->val);
}
} else {
fprintf(stderr, "%s", "$_main");
}
if (func_info && func_info->clone_num > 0) {
fprintf(stderr, "_@_clone_%d", func_info->clone_num);
}
}
void zend_dump_op_array(const zend_op_array *op_array, uint32_t dump_flags, const char *msg, const void *data)
{
int i;
const zend_cfg *cfg = NULL;
const zend_ssa *ssa = NULL;
zend_func_info *func_info = NULL;
uint32_t func_flags = 0;
if (dump_flags & (ZEND_DUMP_CFG|ZEND_DUMP_SSA)) {
cfg = (const zend_cfg*)data;
if (!cfg->blocks) {
cfg = data = NULL;
}
}
if (dump_flags & ZEND_DUMP_SSA) {
ssa = (const zend_ssa*)data;
}
func_info = ZEND_FUNC_INFO(op_array);
if (func_info) {
func_flags = func_info->flags;
}
fprintf(stderr, "\n");
zend_dump_op_array_name(op_array);
fprintf(stderr, ": ; (lines=%d, args=%d",
op_array->last,
op_array->num_args);
if (func_info && func_info->num_args >= 0) {
fprintf(stderr, "/%d", func_info->num_args);
}
fprintf(stderr, ", vars=%d, tmps=%d", op_array->last_var, op_array->T);
if (ssa) {
fprintf(stderr, ", ssa_vars=%d", ssa->vars_count);
}
if (func_flags & ZEND_FUNC_INDIRECT_VAR_ACCESS) {
fprintf(stderr, ", dynamic");
}
if (func_flags & ZEND_FUNC_RECURSIVE) {
fprintf(stderr, ", recursive");
if (func_flags & ZEND_FUNC_RECURSIVE_DIRECTLY) {
fprintf(stderr, " directly");
}
if (func_flags & ZEND_FUNC_RECURSIVE_INDIRECTLY) {
fprintf(stderr, " indirectly");
}
}
if (func_flags & ZEND_FUNC_IRREDUCIBLE) {
fprintf(stderr, ", irreducable");
}
if (func_flags & ZEND_FUNC_NO_LOOPS) {
fprintf(stderr, ", no_loops");
}
//TODO: this is useful only for JIT???
#if 0
if (info->flags & ZEND_JIT_FUNC_NO_IN_MEM_CVS) {
fprintf(stderr, ", no_in_mem_cvs");
}
if (info->flags & ZEND_JIT_FUNC_NO_USED_ARGS) {
fprintf(stderr, ", no_used_args");
}
if (info->flags & ZEND_JIT_FUNC_NO_SYMTAB) {
fprintf(stderr, ", no_symtab");
}
if (info->flags & ZEND_JIT_FUNC_NO_FRAME) {
fprintf(stderr, ", no_frame");
}
if (info->flags & ZEND_JIT_FUNC_INLINE) {
fprintf(stderr, ", inline");
}
#endif
if (func_info && func_info->return_value_used == 0) {
fprintf(stderr, ", no_return_value");
} else if (func_info && func_info->return_value_used == 1) {
fprintf(stderr, ", return_value");
}
fprintf(stderr, ")\n");
if (msg) {
fprintf(stderr, " ; (%s)\n", msg);
}
fprintf(stderr, " ; %s:%u-%u\n", op_array->filename->val, op_array->line_start, op_array->line_end);
if (func_info && func_info->num_args > 0) {
uint32_t j;
for (j = 0; j < MIN(op_array->num_args, func_info->num_args ); j++) {
fprintf(stderr, " ; arg %d ", j);
zend_dump_type_info(func_info->arg_info[j].info.type, func_info->arg_info[j].info.ce, func_info->arg_info[j].info.is_instanceof, dump_flags);
zend_dump_range(&func_info->arg_info[j].info.range);
fprintf(stderr, "\n");
}
}
if (func_info) {
fprintf(stderr, " ; return ");
zend_dump_type_info(func_info->return_info.type, func_info->return_info.ce, func_info->return_info.is_instanceof, dump_flags);
zend_dump_range(&func_info->return_info.range);
fprintf(stderr, "\n");
}
if (ssa && ssa->var_info) {
for (i = 0; i < op_array->last_var; i++) {
fprintf(stderr, " ; ");
zend_dump_ssa_var(op_array, ssa, i, IS_CV, i, dump_flags);
fprintf(stderr, "\n");
}
}
if (cfg) {
int n;
zend_basic_block *b;
for (n = 0; n < cfg->blocks_count; n++) {
b = cfg->blocks + n;
if (!(dump_flags & ZEND_DUMP_HIDE_UNREACHABLE) || (b->flags & ZEND_BB_REACHABLE)) {
const zend_op *opline;
const zend_op *end;
zend_dump_block_header(cfg, op_array, ssa, n, dump_flags);
opline = op_array->opcodes + b->start;
end = opline + b->len;
while (opline < end) {
zend_dump_op(op_array, b, opline, dump_flags, data);
opline++;
}
}
}
if (op_array->last_live_range) {
fprintf(stderr, "LIVE RANGES:\n");
for (i = 0; i < op_array->last_live_range; i++) {
if (cfg->split_at_live_ranges) {
fprintf(stderr, " %u: BB%u - BB%u ",
EX_VAR_TO_NUM(op_array->live_range[i].var & ~ZEND_LIVE_MASK),
cfg->map[op_array->live_range[i].start],
cfg->map[op_array->live_range[i].end]);
} else {
fprintf(stderr, " %u: L%u - L%u ",
EX_VAR_TO_NUM(op_array->live_range[i].var & ~ZEND_LIVE_MASK),
op_array->live_range[i].start,
op_array->live_range[i].end);
}
switch (op_array->live_range[i].var & ZEND_LIVE_MASK) {
case ZEND_LIVE_TMPVAR:
fprintf(stderr, "(tmp/var)\n");
break;
case ZEND_LIVE_LOOP:
fprintf(stderr, "(loop)\n");
break;
case ZEND_LIVE_SILENCE:
fprintf(stderr, "(silence)\n");
break;
case ZEND_LIVE_ROPE:
fprintf(stderr, "(rope)\n");