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zend.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend 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: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_extensions.h"
#include "zend_modules.h"
#include "zend_constants.h"
#include "zend_list.h"
#include "zend_API.h"
#include "zend_exceptions.h"
#include "zend_builtin_functions.h"
#include "zend_ini.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
#include "zend_virtual_cwd.h"
#include "zend_smart_str.h"
#include "zend_smart_string.h"
#include "zend_cpuinfo.h"
#include "zend_attributes.h"
#include "zend_observer.h"
#include "zend_fibers.h"
#include "zend_call_stack.h"
#include "zend_max_execution_timer.h"
#include "zend_hrtime.h"
#include "Optimizer/zend_optimizer.h"
#include "php.h"
#include "php_globals.h"
// FIXME: Breaks the declaration of the function below
#undef zenderror
static size_t global_map_ptr_last = 0;
static bool startup_done = false;
#ifdef ZTS
ZEND_API int compiler_globals_id;
ZEND_API int executor_globals_id;
ZEND_API size_t compiler_globals_offset;
ZEND_API size_t executor_globals_offset;
static HashTable *global_function_table = NULL;
static HashTable *global_class_table = NULL;
static HashTable *global_constants_table = NULL;
static HashTable *global_auto_globals_table = NULL;
static HashTable *global_persistent_list = NULL;
TSRMLS_MAIN_CACHE_DEFINE()
# define GLOBAL_FUNCTION_TABLE global_function_table
# define GLOBAL_CLASS_TABLE global_class_table
# define GLOBAL_CONSTANTS_TABLE global_constants_table
# define GLOBAL_AUTO_GLOBALS_TABLE global_auto_globals_table
#else
# define GLOBAL_FUNCTION_TABLE CG(function_table)
# define GLOBAL_CLASS_TABLE CG(class_table)
# define GLOBAL_AUTO_GLOBALS_TABLE CG(auto_globals)
# define GLOBAL_CONSTANTS_TABLE EG(zend_constants)
#endif
ZEND_API zend_utility_values zend_uv;
ZEND_API bool zend_dtrace_enabled;
/* version information */
static char *zend_version_info;
static uint32_t zend_version_info_length;
#define ZEND_CORE_VERSION_INFO "Zend Engine v" ZEND_VERSION ", Copyright (c) Zend Technologies\n"
#define PRINT_ZVAL_INDENT 4
/* true multithread-shared globals */
ZEND_API zend_class_entry *zend_standard_class_def = NULL;
ZEND_API size_t (*zend_printf)(const char *format, ...);
ZEND_API zend_write_func_t zend_write;
ZEND_API FILE *(*zend_fopen)(zend_string *filename, zend_string **opened_path);
ZEND_API zend_result (*zend_stream_open_function)(zend_file_handle *handle);
ZEND_API void (*zend_ticks_function)(int ticks);
ZEND_API void (*zend_interrupt_function)(zend_execute_data *execute_data);
ZEND_API void (*zend_error_cb)(int type, zend_string *error_filename, const uint32_t error_lineno, zend_string *message);
void (*zend_printf_to_smart_string)(smart_string *buf, const char *format, va_list ap);
void (*zend_printf_to_smart_str)(smart_str *buf, const char *format, va_list ap);
ZEND_API char *(*zend_getenv)(const char *name, size_t name_len);
ZEND_API zend_string *(*zend_resolve_path)(zend_string *filename);
ZEND_API zend_result (*zend_post_startup_cb)(void) = NULL;
ZEND_API void (*zend_post_shutdown_cb)(void) = NULL;
ZEND_API void (*zend_accel_schedule_restart_hook)(int reason) = NULL;
ZEND_ATTRIBUTE_NONNULL ZEND_API zend_result (*zend_random_bytes)(void *bytes, size_t size, char *errstr, size_t errstr_size) = NULL;
ZEND_ATTRIBUTE_NONNULL ZEND_API void (*zend_random_bytes_insecure)(zend_random_bytes_insecure_state *state, void *bytes, size_t size) = NULL;
/* This callback must be signal handler safe! */
void (*zend_on_timeout)(int seconds);
static void (*zend_message_dispatcher_p)(zend_long message, const void *data);
static zval *(*zend_get_configuration_directive_p)(zend_string *name);
#if ZEND_RC_DEBUG
ZEND_API bool zend_rc_debug = 0;
#endif
static ZEND_INI_MH(OnUpdateErrorReporting) /* {{{ */
{
if (!new_value) {
EG(error_reporting) = E_ALL;
} else {
EG(error_reporting) = atoi(ZSTR_VAL(new_value));
}
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnUpdateGCEnabled) /* {{{ */
{
bool val;
val = zend_ini_parse_bool(new_value);
gc_enable(val);
return SUCCESS;
}
/* }}} */
static ZEND_INI_DISP(zend_gc_enabled_displayer_cb) /* {{{ */
{
if (gc_enabled()) {
ZEND_PUTS("On");
} else {
ZEND_PUTS("Off");
}
}
/* }}} */
static ZEND_INI_MH(OnUpdateScriptEncoding) /* {{{ */
{
if (!CG(multibyte)) {
return FAILURE;
}
if (!zend_multibyte_get_functions()) {
return SUCCESS;
}
return zend_multibyte_set_script_encoding_by_string(new_value ? ZSTR_VAL(new_value) : NULL, new_value ? ZSTR_LEN(new_value) : 0);
}
/* }}} */
static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
{
zend_long *p = (zend_long *) ZEND_INI_GET_ADDR();
zend_long val = zend_ini_parse_quantity_warn(new_value, entry->name);
if (stage != ZEND_INI_STAGE_STARTUP &&
stage != ZEND_INI_STAGE_SHUTDOWN &&
*p != val &&
(*p < 0 || val < 0)) {
zend_error(E_WARNING, "zend.assertions may be completely enabled or disabled only in php.ini");
return FAILURE;
}
*p = val;
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnSetExceptionStringParamMaxLen) /* {{{ */
{
zend_long i = ZEND_ATOL(ZSTR_VAL(new_value));
if (i >= 0 && i <= 1000000) {
EG(exception_string_param_max_len) = i;
return SUCCESS;
} else {
return FAILURE;
}
}
/* }}} */
#ifdef ZEND_CHECK_STACK_LIMIT
static ZEND_INI_MH(OnUpdateMaxAllowedStackSize) /* {{{ */
{
zend_long size = zend_ini_parse_quantity_warn(new_value, entry->name);
if (size < ZEND_MAX_ALLOWED_STACK_SIZE_UNCHECKED) {
zend_error(E_WARNING, "Invalid \"%s\" setting. Value must be >= %d, but got " ZEND_LONG_FMT,
ZSTR_VAL(entry->name), ZEND_MAX_ALLOWED_STACK_SIZE_UNCHECKED, size);
return FAILURE;
}
EG(max_allowed_stack_size) = size;
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnUpdateReservedStackSize) /* {{{ */
{
zend_ulong size = zend_ini_parse_uquantity_warn(new_value, entry->name);
/* Min value accounts for alloca, PCRE2 START_FRAMES_SIZE, and some buffer
* for normal function calls.
* We could reduce this on systems without alloca if we also add stack size
* checks before pcre2_match(). */
#ifdef ZEND_ALLOCA_MAX_SIZE
zend_ulong min = ZEND_ALLOCA_MAX_SIZE + 16*1024;
#else
zend_ulong min = 32*1024;
#endif
#if defined(__SANITIZE_ADDRESS__) || __has_feature(memory_sanitizer)
/* AddressSanitizer and MemorySanitizer use more stack due to
* instrumentation */
min *= 10;
#endif
if (size == 0) {
size = min;
} else if (size < min) {
zend_error(E_WARNING, "Invalid \"%s\" setting. Value must be >= " ZEND_ULONG_FMT ", but got " ZEND_ULONG_FMT "\n",
ZSTR_VAL(entry->name), min, size);
return FAILURE;
}
EG(reserved_stack_size) = size;
return SUCCESS;
}
/* }}} */
#endif /* ZEND_CHECK_STACK_LIMIT */
static ZEND_INI_MH(OnUpdateFiberStackSize) /* {{{ */
{
if (new_value) {
zend_long tmp = zend_ini_parse_quantity_warn(new_value, entry->name);
if (tmp < 0) {
zend_error(E_WARNING, "fiber.stack_size must be a positive number");
return FAILURE;
}
EG(fiber_stack_size) = tmp;
} else {
EG(fiber_stack_size) = ZEND_FIBER_DEFAULT_C_STACK_SIZE;
}
return SUCCESS;
}
/* }}} */
#if ZEND_DEBUG
# define SIGNAL_CHECK_DEFAULT "1"
#else
# define SIGNAL_CHECK_DEFAULT "0"
#endif
ZEND_INI_BEGIN()
ZEND_INI_ENTRY("error_reporting", NULL, ZEND_INI_ALL, OnUpdateErrorReporting)
STD_ZEND_INI_BOOLEAN("fatal_error_backtraces", "1", ZEND_INI_ALL, OnUpdateBool, fatal_error_backtrace_on, zend_executor_globals, executor_globals)
STD_ZEND_INI_ENTRY("zend.assertions", "1", ZEND_INI_ALL, OnUpdateAssertions, assertions, zend_executor_globals, executor_globals)
ZEND_INI_ENTRY3_EX("zend.enable_gc", "1", ZEND_INI_ALL, OnUpdateGCEnabled, NULL, NULL, NULL, zend_gc_enabled_displayer_cb)
STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte, zend_compiler_globals, compiler_globals)
ZEND_INI_ENTRY("zend.script_encoding", NULL, ZEND_INI_ALL, OnUpdateScriptEncoding)
STD_ZEND_INI_BOOLEAN("zend.detect_unicode", "1", ZEND_INI_ALL, OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
#ifdef ZEND_SIGNALS
STD_ZEND_INI_BOOLEAN("zend.signal_check", SIGNAL_CHECK_DEFAULT, ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
#endif
STD_ZEND_INI_BOOLEAN("zend.exception_ignore_args", "0", ZEND_INI_ALL, OnUpdateBool, exception_ignore_args, zend_executor_globals, executor_globals)
STD_ZEND_INI_ENTRY("zend.exception_string_param_max_len", "15", ZEND_INI_ALL, OnSetExceptionStringParamMaxLen, exception_string_param_max_len, zend_executor_globals, executor_globals)
STD_ZEND_INI_ENTRY("fiber.stack_size", NULL, ZEND_INI_ALL, OnUpdateFiberStackSize, fiber_stack_size, zend_executor_globals, executor_globals)
#ifdef ZEND_CHECK_STACK_LIMIT
/* The maximum allowed call stack size. 0: auto detect, -1: no limit. For fibers, this is fiber.stack_size. */
STD_ZEND_INI_ENTRY("zend.max_allowed_stack_size", "0", ZEND_INI_SYSTEM, OnUpdateMaxAllowedStackSize, max_allowed_stack_size, zend_executor_globals, executor_globals)
/* Subtracted from the max allowed stack size, as a buffer, when checking for overflow. 0: auto detect. */
STD_ZEND_INI_ENTRY("zend.reserved_stack_size", "0", ZEND_INI_SYSTEM, OnUpdateReservedStackSize, reserved_stack_size, zend_executor_globals, executor_globals)
#endif
ZEND_INI_END()
ZEND_API size_t zend_vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap) /* {{{ */
{
smart_string buf = {0};
/* since there are places where (v)spprintf called without checking for null,
a bit of defensive coding here */
if (!pbuf) {
return 0;
}
zend_printf_to_smart_string(&buf, format, ap);
if (max_len && buf.len > max_len) {
buf.len = max_len;
}
smart_string_0(&buf);
if (buf.c) {
*pbuf = buf.c;
return buf.len;
} else {
*pbuf = estrndup("", 0);
return 0;
}
}
/* }}} */
ZEND_API size_t zend_spprintf(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
size_t len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
ZEND_API size_t zend_spprintf_unchecked(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
size_t len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
ZEND_API zend_string *zend_vstrpprintf(size_t max_len, const char *format, va_list ap) /* {{{ */
{
smart_str buf = {0};
zend_printf_to_smart_str(&buf, format, ap);
if (!buf.s) {
return ZSTR_EMPTY_ALLOC();
}
if (max_len && ZSTR_LEN(buf.s) > max_len) {
ZSTR_LEN(buf.s) = max_len;
}
return smart_str_extract(&buf);
}
/* }}} */
ZEND_API zend_string *zend_strpprintf(size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
zend_string *str;
va_start(arg, format);
str = zend_vstrpprintf(max_len, format, arg);
va_end(arg);
return str;
}
/* }}} */
ZEND_API zend_string *zend_strpprintf_unchecked(size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
zend_string *str;
va_start(arg, format);
str = zend_vstrpprintf(max_len, format, arg);
va_end(arg);
return str;
}
/* }}} */
static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent);
static void print_hash(smart_str *buf, HashTable *ht, int indent, bool is_object) /* {{{ */
{
zval *tmp;
zend_string *string_key;
zend_ulong num_key;
int i;
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appends(buf, "(\n");
indent += PRINT_ZVAL_INDENT;
ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appendc(buf, '[');
if (string_key) {
if (is_object) {
const char *prop_name, *class_name;
size_t prop_len;
int mangled = zend_unmangle_property_name_ex(string_key, &class_name, &prop_name, &prop_len);
smart_str_appendl(buf, prop_name, prop_len);
if (class_name && mangled == SUCCESS) {
if (class_name[0] == '*') {
smart_str_appends(buf, ":protected");
} else {
smart_str_appends(buf, ":");
smart_str_appends(buf, class_name);
smart_str_appends(buf, ":private");
}
}
} else {
smart_str_append(buf, string_key);
}
} else {
smart_str_append_long(buf, num_key);
}
smart_str_appends(buf, "] => ");
zend_print_zval_r_to_buf(buf, tmp, indent+PRINT_ZVAL_INDENT);
smart_str_appends(buf, "\n");
} ZEND_HASH_FOREACH_END();
indent -= PRINT_ZVAL_INDENT;
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appends(buf, ")\n");
}
/* }}} */
static void print_flat_hash(smart_str *buf, HashTable *ht) /* {{{ */
{
zval *tmp;
zend_string *string_key;
zend_ulong num_key;
int i = 0;
ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
if (i++ > 0) {
smart_str_appendc(buf, ',');
}
smart_str_appendc(buf, '[');
if (string_key) {
smart_str_append(buf, string_key);
} else {
smart_str_append_unsigned(buf, num_key);
}
smart_str_appends(buf, "] => ");
zend_print_flat_zval_r_to_buf(buf, tmp);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
ZEND_API bool zend_make_printable_zval(zval *expr, zval *expr_copy) /* {{{ */
{
if (Z_TYPE_P(expr) == IS_STRING) {
return 0;
} else {
ZVAL_STR(expr_copy, zval_get_string_func(expr));
return 1;
}
}
/* }}} */
ZEND_API size_t zend_print_zval(zval *expr, int indent) /* {{{ */
{
zend_string *tmp_str;
zend_string *str = zval_get_tmp_string(expr, &tmp_str);
size_t len = ZSTR_LEN(str);
if (len != 0) {
zend_write(ZSTR_VAL(str), len);
}
zend_tmp_string_release(tmp_str);
return len;
}
/* }}} */
void zend_print_flat_zval_r_to_buf(smart_str *buf, zval *expr) /* {{{ */
{
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
smart_str_appends(buf, "Array (");
if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
}
print_flat_hash(buf, Z_ARRVAL_P(expr));
smart_str_appendc(buf, ')');
GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
break;
case IS_OBJECT:
{
HashTable *properties;
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
smart_str_append(buf, class_name);
smart_str_appends(buf, " Object (");
zend_string_release_ex(class_name, 0);
if (GC_IS_RECURSIVE(Z_COUNTED_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
properties = Z_OBJPROP_P(expr);
if (properties) {
GC_PROTECT_RECURSION(Z_OBJ_P(expr));
print_flat_hash(buf, properties);
GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));
}
smart_str_appendc(buf, ')');
break;
}
case IS_REFERENCE:
zend_print_flat_zval_r_to_buf(buf, Z_REFVAL_P(expr));
break;
case IS_STRING:
smart_str_append(buf, Z_STR_P(expr));
break;
default:
{
zend_string *str = zval_get_string_func(expr);
smart_str_append(buf, str);
zend_string_release_ex(str, 0);
break;
}
}
}
/* }}} */
ZEND_API void zend_print_flat_zval_r(zval *expr)
{
smart_str buf = {0};
zend_print_flat_zval_r_to_buf(&buf, expr);
smart_str_0(&buf);
zend_write(ZSTR_VAL(buf.s), ZSTR_LEN(buf.s));
smart_str_free(&buf);
}
static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent) /* {{{ */
{
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
smart_str_appends(buf, "Array\n");
if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
}
print_hash(buf, Z_ARRVAL_P(expr), indent, 0);
GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
break;
case IS_OBJECT:
{
HashTable *properties;
zend_object *zobj = Z_OBJ_P(expr);
uint32_t *guard = zend_get_recursion_guard(zobj);
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(zobj);
smart_str_appends(buf, ZSTR_VAL(class_name));
zend_string_release_ex(class_name, 0);
if (!(zobj->ce->ce_flags & ZEND_ACC_ENUM)) {
smart_str_appends(buf, " Object\n");
} else {
smart_str_appends(buf, " Enum");
if (zobj->ce->enum_backing_type != IS_UNDEF) {
smart_str_appendc(buf, ':');
smart_str_appends(buf, zend_get_type_by_const(zobj->ce->enum_backing_type));
}
smart_str_appendc(buf, '\n');
}
if (ZEND_GUARD_OR_GC_IS_RECURSIVE(guard, DEBUG, zobj)) {
smart_str_appends(buf, " *RECURSION*");
return;
}
if ((properties = zend_get_properties_for(expr, ZEND_PROP_PURPOSE_DEBUG)) == NULL) {
print_hash(buf, (HashTable*) &zend_empty_array, indent, 1);
break;
}
ZEND_GUARD_OR_GC_PROTECT_RECURSION(guard, DEBUG, zobj);
print_hash(buf, properties, indent, 1);
ZEND_GUARD_OR_GC_UNPROTECT_RECURSION(guard, DEBUG, zobj);
zend_release_properties(properties);
break;
}
case IS_LONG:
smart_str_append_long(buf, Z_LVAL_P(expr));
break;
case IS_REFERENCE:
zend_print_zval_r_to_buf(buf, Z_REFVAL_P(expr), indent);
break;
case IS_STRING:
smart_str_append(buf, Z_STR_P(expr));
break;
default:
{
zend_string *str = zval_get_string_func(expr);
smart_str_append(buf, str);
zend_string_release_ex(str, 0);
}
break;
}
}
/* }}} */
ZEND_API zend_string *zend_print_zval_r_to_str(zval *expr, int indent) /* {{{ */
{
smart_str buf = {0};
zend_print_zval_r_to_buf(&buf, expr, indent);
smart_str_0(&buf);
return buf.s;
}
/* }}} */
ZEND_API void zend_print_zval_r(zval *expr, int indent) /* {{{ */
{
zend_string *str = zend_print_zval_r_to_str(expr, indent);
zend_write(ZSTR_VAL(str), ZSTR_LEN(str));
zend_string_release_ex(str, 0);
}
/* }}} */
static FILE *zend_fopen_wrapper(zend_string *filename, zend_string **opened_path) /* {{{ */
{
if (opened_path) {
*opened_path = zend_string_copy(filename);
}
return fopen(ZSTR_VAL(filename), "rb");
}
/* }}} */
#ifdef ZTS
static bool short_tags_default = 1;
static uint32_t compiler_options_default = ZEND_COMPILE_DEFAULT;
#else
# define short_tags_default 1
# define compiler_options_default ZEND_COMPILE_DEFAULT
#endif
static void zend_set_default_compile_time_values(void) /* {{{ */
{
/* default compile-time values */
CG(short_tags) = short_tags_default;
CG(compiler_options) = compiler_options_default;
CG(rtd_key_counter) = 0;
}
/* }}} */
#ifdef ZEND_WIN32
static void zend_get_windows_version_info(OSVERSIONINFOEX *osvi) /* {{{ */
{
ZeroMemory(osvi, sizeof(OSVERSIONINFOEX));
osvi->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
if(!GetVersionEx((OSVERSIONINFO *) osvi)) {
ZEND_UNREACHABLE(); /* Should not happen as sizeof is used. */
}
}
/* }}} */
#endif
static void zend_init_exception_op(void) /* {{{ */
{
memset(EG(exception_op), 0, sizeof(EG(exception_op)));
EG(exception_op)[0].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op));
EG(exception_op)[1].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+1);
EG(exception_op)[2].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+2);
}
/* }}} */
static void zend_init_call_trampoline_op(void) /* {{{ */
{
memset(&EG(call_trampoline_op), 0, sizeof(EG(call_trampoline_op)));
EG(call_trampoline_op).opcode = ZEND_CALL_TRAMPOLINE;
ZEND_VM_SET_OPCODE_HANDLER(&EG(call_trampoline_op));
}
/* }}} */
static void auto_global_dtor(zval *zv) /* {{{ */
{
free(Z_PTR_P(zv));
}
/* }}} */
#ifdef ZTS
static void auto_global_copy_ctor(zval *zv) /* {{{ */
{
zend_auto_global *old_ag = (zend_auto_global *) Z_PTR_P(zv);
zend_auto_global *new_ag = pemalloc(sizeof(zend_auto_global), 1);
new_ag->name = old_ag->name;
new_ag->auto_global_callback = old_ag->auto_global_callback;
new_ag->jit = old_ag->jit;
Z_PTR_P(zv) = new_ag;
}
/* }}} */
static void compiler_globals_ctor(zend_compiler_globals *compiler_globals) /* {{{ */
{
compiler_globals->compiled_filename = NULL;
compiler_globals->zend_lineno = 0;
compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->function_table, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
zend_hash_copy(compiler_globals->function_table, global_function_table, NULL);
compiler_globals->copied_functions_count = zend_hash_num_elements(compiler_globals->function_table);
compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->class_table, 64, NULL, ZEND_CLASS_DTOR, 1);
zend_hash_copy(compiler_globals->class_table, global_class_table, zend_class_add_ref);
zend_set_default_compile_time_values();
compiler_globals->auto_globals = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->auto_globals, 8, NULL, auto_global_dtor, 1);
zend_hash_copy(compiler_globals->auto_globals, global_auto_globals_table, auto_global_copy_ctor);
compiler_globals->script_encoding_list = NULL;
compiler_globals->current_linking_class = NULL;
compiler_globals->bound_associated_types = NULL;
/* Map region is going to be created and resized at run-time. */
compiler_globals->map_ptr_real_base = NULL;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
compiler_globals->map_ptr_size = 0;
compiler_globals->map_ptr_last = global_map_ptr_last;
compiler_globals->internal_run_time_cache = NULL;
if (compiler_globals->map_ptr_last || zend_map_ptr_static_size) {
/* Allocate map_ptr table */
compiler_globals->map_ptr_size = ZEND_MM_ALIGNED_SIZE_EX(compiler_globals->map_ptr_last, 4096);
void *base = pemalloc((zend_map_ptr_static_size + compiler_globals->map_ptr_size) * sizeof(void*), 1);
compiler_globals->map_ptr_real_base = base;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(base);
memset(base, 0, (zend_map_ptr_static_size + compiler_globals->map_ptr_last) * sizeof(void*));
}
zend_init_internal_run_time_cache();
}
/* }}} */
static void compiler_globals_dtor(zend_compiler_globals *compiler_globals) /* {{{ */
{
if (compiler_globals->function_table != GLOBAL_FUNCTION_TABLE) {
uint32_t n = compiler_globals->copied_functions_count;
/* Prevent destruction of functions copied from the main process context */
if (zend_hash_num_elements(compiler_globals->function_table) <= n) {
compiler_globals->function_table->nNumUsed = 0;
} else {
Bucket *p = compiler_globals->function_table->arData;
compiler_globals->function_table->nNumOfElements -= n;
while (n != 0) {
ZVAL_UNDEF(&p->val);
p++;
n--;
}
}
zend_hash_destroy(compiler_globals->function_table);
free(compiler_globals->function_table);
}
if (compiler_globals->class_table != GLOBAL_CLASS_TABLE) {
/* Child classes may reuse structures from parent classes, so destroy in reverse order. */
zend_hash_graceful_reverse_destroy(compiler_globals->class_table);
free(compiler_globals->class_table);
}
if (compiler_globals->auto_globals != GLOBAL_AUTO_GLOBALS_TABLE) {
zend_hash_destroy(compiler_globals->auto_globals);
free(compiler_globals->auto_globals);
}
if (compiler_globals->script_encoding_list) {
pefree((char*)compiler_globals->script_encoding_list, 1);
}
if (compiler_globals->map_ptr_real_base) {
free(compiler_globals->map_ptr_real_base);
compiler_globals->map_ptr_real_base = NULL;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
compiler_globals->map_ptr_size = 0;
}
if (compiler_globals->internal_run_time_cache) {
pefree(compiler_globals->internal_run_time_cache, 1);
compiler_globals->internal_run_time_cache = NULL;
}
}
/* }}} */
static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{{ */
{
zend_startup_constants();
zend_copy_constants(executor_globals->zend_constants, GLOBAL_CONSTANTS_TABLE);
zend_init_rsrc_plist();
zend_init_exception_op();
zend_init_call_trampoline_op();
memset(&executor_globals->trampoline, 0, sizeof(zend_op_array));
executor_globals->capture_warnings_during_sccp = 0;
executor_globals->user_error_handler_error_reporting = 0;
ZVAL_UNDEF(&executor_globals->user_error_handler);
ZVAL_UNDEF(&executor_globals->user_exception_handler);
executor_globals->in_autoload = NULL;
executor_globals->current_execute_data = NULL;
executor_globals->current_module = NULL;
executor_globals->exit_status = 0;
#if XPFPA_HAVE_CW
executor_globals->saved_fpu_cw = 0;
#endif
executor_globals->saved_fpu_cw_ptr = NULL;
executor_globals->active = 0;
executor_globals->bailout = NULL;
executor_globals->error_handling = EH_NORMAL;
executor_globals->exception_class = NULL;
executor_globals->exception = NULL;
executor_globals->objects_store.object_buckets = NULL;
executor_globals->current_fiber_context = NULL;
executor_globals->main_fiber_context = NULL;
executor_globals->active_fiber = NULL;
#ifdef ZEND_WIN32
zend_get_windows_version_info(&executor_globals->windows_version_info);
#endif
executor_globals->flags = EG_FLAGS_INITIAL;
executor_globals->record_errors = false;
executor_globals->num_errors = 0;
executor_globals->errors = NULL;
executor_globals->filename_override = NULL;
executor_globals->lineno_override = -1;
#ifdef ZEND_CHECK_STACK_LIMIT
executor_globals->stack_limit = (void*)0;
executor_globals->stack_base = (void*)0;
#endif
#ifdef ZEND_MAX_EXECUTION_TIMERS
executor_globals->pid = 0;
executor_globals->oldact = (struct sigaction){0};
#endif
memset(executor_globals->strtod_state.freelist, 0,
sizeof(executor_globals->strtod_state.freelist));
executor_globals->strtod_state.p5s = NULL;
executor_globals->strtod_state.result = NULL;
}
/* }}} */
static void executor_globals_persistent_list_dtor(void *storage)
{
zend_executor_globals *executor_globals = storage;
if (&executor_globals->persistent_list != global_persistent_list) {
zend_destroy_rsrc_list(&executor_globals->persistent_list);
}
}
static void executor_globals_dtor(zend_executor_globals *executor_globals) /* {{{ */
{
zend_ini_dtor(executor_globals->ini_directives);
if (executor_globals->zend_constants != GLOBAL_CONSTANTS_TABLE) {
zend_hash_destroy(executor_globals->zend_constants);
free(executor_globals->zend_constants);
}
}
/* }}} */
static void zend_new_thread_end_handler(THREAD_T thread_id) /* {{{ */
{
zend_copy_ini_directives();
zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP);
#ifdef ZEND_CHECK_STACK_LIMIT
zend_call_stack_init();
#endif
zend_max_execution_timer_init();
}
/* }}} */
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD and DragonFly floating point precision fix */
#include <floatingpoint.h>
#endif
static void ini_scanner_globals_ctor(zend_ini_scanner_globals *scanner_globals_p) /* {{{ */
{
memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */
static void php_scanner_globals_ctor(zend_php_scanner_globals *scanner_globals_p) /* {{{ */
{
memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */
static void module_destructor_zval(zval *zv) /* {{{ */
{
zend_module_entry *module = (zend_module_entry*)Z_PTR_P(zv);
module_destructor(module);
}
/* }}} */
static bool php_auto_globals_create_globals(zend_string *name) /* {{{ */
{
/* While we keep registering $GLOBALS as an auto-global, we do not create an
* actual variable for it. Access to it handled specially by the compiler. */
return 0;
}
/* }}} */
void zend_startup(zend_utility_functions *utility_functions) /* {{{ */
{
#ifdef ZTS
zend_compiler_globals *compiler_globals;
zend_executor_globals *executor_globals;
extern ZEND_API ts_rsrc_id ini_scanner_globals_id;
extern ZEND_API ts_rsrc_id language_scanner_globals_id;
#else
extern zend_ini_scanner_globals ini_scanner_globals;
extern zend_php_scanner_globals language_scanner_globals;
#endif
zend_cpu_startup();
#ifdef ZEND_WIN32
php_win32_cp_set_by_id(65001);
#endif
/* Set up early utility functions. zend_mm depends on
* zend_random_bytes_insecure */
zend_random_bytes = utility_functions->random_bytes_function;
zend_random_bytes_insecure = utility_functions->random_bytes_insecure_function;
start_memory_manager();
virtual_cwd_startup(); /* Could use shutdown to free the main cwd but it would just slow it down for CGI */
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD and DragonFly floating point precision fix */
fpsetmask(0);
#endif
zend_startup_hrtime();
zend_startup_extensions_mechanism();
/* Set up utility functions and values */
zend_error_cb = utility_functions->error_function;
zend_printf = utility_functions->printf_function;
zend_write = utility_functions->write_function;
zend_fopen = utility_functions->fopen_function;
if (!zend_fopen) {
zend_fopen = zend_fopen_wrapper;
}
zend_stream_open_function = utility_functions->stream_open_function;
zend_message_dispatcher_p = utility_functions->message_handler;
zend_get_configuration_directive_p = utility_functions->get_configuration_directive;
zend_ticks_function = utility_functions->ticks_function;
zend_on_timeout = utility_functions->on_timeout;
zend_printf_to_smart_string = utility_functions->printf_to_smart_string_function;
zend_printf_to_smart_str = utility_functions->printf_to_smart_str_function;
zend_getenv = utility_functions->getenv_function;
zend_resolve_path = utility_functions->resolve_path_function;
zend_interrupt_function = NULL;
#ifdef HAVE_DTRACE
/* build with dtrace support */
{
char *tmp = getenv("USE_ZEND_DTRACE");
if (tmp && ZEND_ATOL(tmp)) {
zend_dtrace_enabled = 1;
zend_compile_file = dtrace_compile_file;
zend_execute_ex = dtrace_execute_ex;
zend_execute_internal = dtrace_execute_internal;
zend_observer_error_register(dtrace_error_notify_cb);
} else {
zend_compile_file = compile_file;
zend_execute_ex = execute_ex;
zend_execute_internal = NULL;
}
}
#else
zend_compile_file = compile_file;
zend_execute_ex = execute_ex;
zend_execute_internal = NULL;
#endif /* HAVE_DTRACE */
zend_compile_string = compile_string;
zend_throw_exception_hook = NULL;
/* Set up the default garbage collection implementation. */
gc_collect_cycles = zend_gc_collect_cycles;