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Edit File: zend_execute.h
/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) 1998-2014 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 | | license@zend.com so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Andi Gutmans <andi@zend.com> | | Zeev Suraski <zeev@zend.com> | +----------------------------------------------------------------------+ */ /* $Id$ */ #ifndef ZEND_EXECUTE_H #define ZEND_EXECUTE_H #include "zend_compile.h" #include "zend_hash.h" #include "zend_operators.h" #include "zend_variables.h" typedef union _temp_variable { zval tmp_var; struct { zval **ptr_ptr; zval *ptr; zend_bool fcall_returned_reference; } var; struct { zval **ptr_ptr; /* shared with var.ptr_ptr */ zval *str; zend_uint offset; } str_offset; struct { zval **ptr_ptr; /* shared with var.ptr_ptr */ zval *ptr; /* shared with var.ptr */ HashPointer fe_pos; } fe; zend_class_entry *class_entry; } temp_variable; BEGIN_EXTERN_C() ZEND_API extern void (*zend_execute)(zend_op_array *op_array TSRMLS_DC); ZEND_API extern void (*zend_execute_internal)(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC); void init_executor(TSRMLS_D); void shutdown_executor(TSRMLS_D); void shutdown_destructors(TSRMLS_D); ZEND_API void execute(zend_op_array *op_array TSRMLS_DC); ZEND_API void execute_internal(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC); ZEND_API int zend_is_true(zval *op); #define safe_free_zval_ptr(p) safe_free_zval_ptr_rel(p ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC) static zend_always_inline void safe_free_zval_ptr_rel(zval *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) { TSRMLS_FETCH(); if (p!=EG(uninitialized_zval_ptr)) { FREE_ZVAL_REL(p); } } ZEND_API int zend_lookup_class(const char *name, int name_length, zend_class_entry ***ce TSRMLS_DC); ZEND_API int zend_lookup_class_ex(const char *name, int name_length, const zend_literal *key, int use_autoload, zend_class_entry ***ce TSRMLS_DC); ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC); ZEND_API int zend_eval_stringl(char *str, int str_len, zval *retval_ptr, char *string_name TSRMLS_DC); ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC); ZEND_API int zend_eval_stringl_ex(char *str, int str_len, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC); ZEND_API char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, ulong fetch_type, const char **class_name, zend_class_entry **pce TSRMLS_DC); ZEND_API int zend_verify_arg_error(int error_type, const zend_function *zf, zend_uint arg_num, const char *need_msg, const char *need_kind, const char *given_msg, const char *given_kind TSRMLS_DC); static zend_always_inline void i_zval_ptr_dtor(zval *zval_ptr ZEND_FILE_LINE_DC) { if (!Z_DELREF_P(zval_ptr)) { TSRMLS_FETCH(); if (zval_ptr != &EG(uninitialized_zval)) { GC_REMOVE_ZVAL_FROM_BUFFER(zval_ptr); zval_dtor(zval_ptr); efree_rel(zval_ptr); } } else { TSRMLS_FETCH(); if (Z_REFCOUNT_P(zval_ptr) == 1) { Z_UNSET_ISREF_P(zval_ptr); } GC_ZVAL_CHECK_POSSIBLE_ROOT(zval_ptr); } } static zend_always_inline int i_zend_is_true(zval *op) { int result; switch (Z_TYPE_P(op)) { case IS_NULL: result = 0; break; case IS_LONG: case IS_BOOL: case IS_RESOURCE: result = (Z_LVAL_P(op)?1:0); break; case IS_DOUBLE: result = (Z_DVAL_P(op) ? 1 : 0); break; case IS_STRING: if (Z_STRLEN_P(op) == 0 || (Z_STRLEN_P(op)==1 && Z_STRVAL_P(op)[0]=='0')) { result = 0; } else { result = 1; } break; case IS_ARRAY: result = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0); break; case IS_OBJECT: if(IS_ZEND_STD_OBJECT(*op)) { TSRMLS_FETCH(); if (Z_OBJ_HT_P(op)->cast_object) { zval tmp; if (Z_OBJ_HT_P(op)->cast_object(op, &tmp, IS_BOOL TSRMLS_CC) == SUCCESS) { result = Z_LVAL(tmp); break; } } else if (Z_OBJ_HT_P(op)->get) { zval *tmp = Z_OBJ_HT_P(op)->get(op TSRMLS_CC); if(Z_TYPE_P(tmp) != IS_OBJECT) { /* for safety - avoid loop */ convert_to_boolean(tmp); result = Z_LVAL_P(tmp); zval_ptr_dtor(&tmp); break; } } } result = 1; break; default: result = 0; break; } return result; } ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC); ZEND_API int zval_update_constant_inline_change(zval **pp, void *arg TSRMLS_DC); ZEND_API int zval_update_constant_no_inline_change(zval **pp, void *arg TSRMLS_DC); ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC); /* dedicated Zend executor functions - do not use! */ #define ZEND_VM_STACK_PAGE_SIZE ((16 * 1024) - 16) struct _zend_vm_stack { void **top; void **end; zend_vm_stack prev; }; #define ZEND_VM_STACK_ELEMETS(stack) \ ((void**)(((char*)(stack)) + ZEND_MM_ALIGNED_SIZE(sizeof(struct _zend_vm_stack)))) #define ZEND_VM_STACK_GROW_IF_NEEDED(count) \ do { \ if (UNEXPECTED((count) > \ EG(argument_stack)->end - EG(argument_stack)->top)) { \ zend_vm_stack_extend((count) TSRMLS_CC); \ } \ } while (0) static zend_always_inline zend_vm_stack zend_vm_stack_new_page(int count) { zend_vm_stack page = (zend_vm_stack)emalloc(ZEND_MM_ALIGNED_SIZE(sizeof(*page)) + sizeof(void*) * count); page->top = ZEND_VM_STACK_ELEMETS(page); page->end = page->top + count; page->prev = NULL; return page; } static zend_always_inline void zend_vm_stack_init(TSRMLS_D) { EG(argument_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE); } static zend_always_inline void zend_vm_stack_destroy(TSRMLS_D) { zend_vm_stack stack = EG(argument_stack); while (stack != NULL) { zend_vm_stack p = stack->prev; efree(stack); stack = p; } } static zend_always_inline void zend_vm_stack_extend(int count TSRMLS_DC) { zend_vm_stack p = zend_vm_stack_new_page(count >= ZEND_VM_STACK_PAGE_SIZE ? count : ZEND_VM_STACK_PAGE_SIZE); p->prev = EG(argument_stack); EG(argument_stack) = p; } static zend_always_inline void **zend_vm_stack_top(TSRMLS_D) { return EG(argument_stack)->top; } static zend_always_inline void zend_vm_stack_push(void *ptr TSRMLS_DC) { ZEND_VM_STACK_GROW_IF_NEEDED(1); *(EG(argument_stack)->top++) = ptr; } static zend_always_inline void zend_vm_stack_push_nocheck(void *ptr TSRMLS_DC) { *(EG(argument_stack)->top++) = ptr; } static zend_always_inline void *zend_vm_stack_pop(TSRMLS_D) { void *el = *(--EG(argument_stack)->top); if (UNEXPECTED(EG(argument_stack)->top == ZEND_VM_STACK_ELEMETS(EG(argument_stack)))) { zend_vm_stack p = EG(argument_stack); EG(argument_stack) = p->prev; efree(p); } return el; } static zend_always_inline void *zend_vm_stack_alloc(size_t size TSRMLS_DC) { void *ret; size = (size + (sizeof(void*) - 1)) / sizeof(void*); /* the following comparison must be optimized out at compile time */ if (ZEND_MM_ALIGNMENT > sizeof(void*)) { int extra = (ZEND_MM_ALIGNMENT - ((zend_uintptr_t)EG(argument_stack)->top & (ZEND_MM_ALIGNMENT - 1))) / sizeof(void*); if (UNEXPECTED(size + extra + ZEND_MM_ALIGNED_SIZE(sizeof(void*)) / sizeof(void*) > (zend_uintptr_t)(EG(argument_stack)->end - EG(argument_stack)->top))) { zend_vm_stack_extend(size TSRMLS_CC); } else { void **old_top = EG(argument_stack)->top; EG(argument_stack)->top += extra; /* store old top on the stack */ *EG(argument_stack)->top = (void*)old_top; EG(argument_stack)->top += ZEND_MM_ALIGNED_SIZE(sizeof(void*)) / sizeof(void*); } } else { ZEND_VM_STACK_GROW_IF_NEEDED((int)size); } ret = (void*)EG(argument_stack)->top; EG(argument_stack)->top += size; return ret; } static zend_always_inline void zend_vm_stack_free_int(void *ptr TSRMLS_DC) { if (UNEXPECTED(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) == (void**)ptr)) { zend_vm_stack p = EG(argument_stack); EG(argument_stack) = p->prev; efree(p); } else { EG(argument_stack)->top = (void**)ptr; } } static zend_always_inline void zend_vm_stack_free(void *ptr TSRMLS_DC) { if (UNEXPECTED(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) == (void**)ptr)) { zend_vm_stack p = EG(argument_stack); EG(argument_stack) = p->prev; efree(p); } else { /* the following comparison must be optimized out at compile time */ if (ZEND_MM_ALIGNMENT > sizeof(void*)) { ptr = (void*)(((char*)ptr) - ZEND_MM_ALIGNED_SIZE(sizeof(void*))); EG(argument_stack)->top = *(void***)ptr; } else { EG(argument_stack)->top = (void**)ptr; } } } static zend_always_inline void** zend_vm_stack_push_args(int count TSRMLS_DC) { if (UNEXPECTED(EG(argument_stack)->top - ZEND_VM_STACK_ELEMETS(EG(argument_stack)) < count) || UNEXPECTED(EG(argument_stack)->top == EG(argument_stack)->end)) { zend_vm_stack p = EG(argument_stack); zend_vm_stack_extend(count + 1 TSRMLS_CC); EG(argument_stack)->top += count; *(EG(argument_stack)->top) = (void*)(zend_uintptr_t)count; while (count-- > 0) { void *data = *(--p->top); if (UNEXPECTED(p->top == ZEND_VM_STACK_ELEMETS(p))) { zend_vm_stack r = p; EG(argument_stack)->prev = p->prev; p = p->prev; efree(r); } *(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) + count) = data; } return EG(argument_stack)->top++; } *(EG(argument_stack)->top) = (void*)(zend_uintptr_t)count; return EG(argument_stack)->top++; } static zend_always_inline void zend_vm_stack_clear_multiple(TSRMLS_D) { void **p = EG(argument_stack)->top - 1; int delete_count = (int)(zend_uintptr_t) *p; while (--delete_count>=0) { zval *q = *(zval **)(--p); *p = NULL; i_zval_ptr_dtor(q ZEND_FILE_LINE_CC); } zend_vm_stack_free_int(p TSRMLS_CC); } static zend_always_inline zval** zend_vm_stack_get_arg(int requested_arg TSRMLS_DC) { void **p = EG(current_execute_data)->prev_execute_data->function_state.arguments; int arg_count = (int)(zend_uintptr_t) *p; if (UNEXPECTED(requested_arg > arg_count)) { return NULL; } return (zval**)p - arg_count + requested_arg - 1; } static zend_always_inline void zend_arg_types_stack_2_pop(zend_ptr_stack *stack, zval **object, zend_function **fbc) { void *a, *b; zend_ptr_stack_2_pop(stack, &a, &b); *object = (zval *) a; *fbc = (zend_function *) b; } static zend_always_inline void zend_arg_types_stack_3_pop(zend_ptr_stack *stack, zend_class_entry **called_scope, zval **object, zend_function **fbc) { void *a, *b, *c; zend_ptr_stack_3_pop(stack, &a, &b, &c); *called_scope = (zend_class_entry *) a; *object = (zval *) b; *fbc = (zend_function *) c; } void execute_new_code(TSRMLS_D); /* services */ ZEND_API const char *get_active_class_name(const char **space TSRMLS_DC); ZEND_API const char *get_active_function_name(TSRMLS_D); ZEND_API const char *zend_get_executed_filename(TSRMLS_D); ZEND_API uint zend_get_executed_lineno(TSRMLS_D); ZEND_API zend_bool zend_is_executing(TSRMLS_D); ZEND_API void zend_set_timeout(long seconds, int reset_signals); ZEND_API void zend_unset_timeout(TSRMLS_D); ZEND_API void zend_timeout(int dummy); ZEND_API zend_class_entry *zend_fetch_class(const char *class_name, uint class_name_len, int fetch_type TSRMLS_DC); ZEND_API zend_class_entry *zend_fetch_class_by_name(const char *class_name, uint class_name_len, const zend_literal *key, int fetch_type TSRMLS_DC); void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC); #ifdef ZEND_WIN32 void zend_init_timeout_thread(void); void zend_shutdown_timeout_thread(void); #define WM_REGISTER_ZEND_TIMEOUT (WM_USER+1) #define WM_UNREGISTER_ZEND_TIMEOUT (WM_USER+2) #endif #define zendi_zval_copy_ctor(p) zval_copy_ctor(&(p)) #define zendi_zval_dtor(p) zval_dtor(&(p)) #define active_opline (*EG(opline_ptr)) /* The following tries to resolve the classname of a zval of type object. * Since it is slow it should be only used in error messages. */ #define Z_OBJ_CLASS_NAME_P(zval) ((zval) && Z_TYPE_P(zval) == IS_OBJECT && Z_OBJ_HT_P(zval)->get_class_entry != NULL && Z_OBJ_HT_P(zval)->get_class_entry(zval TSRMLS_CC) ? Z_OBJ_HT_P(zval)->get_class_entry(zval TSRMLS_CC)->name : "") ZEND_API zval** zend_get_compiled_variable_value(const zend_execute_data *execute_data_ptr, zend_uint var); #define ZEND_USER_OPCODE_CONTINUE 0 /* execute next opcode */ #define ZEND_USER_OPCODE_RETURN 1 /* exit from executor (return from function) */ #define ZEND_USER_OPCODE_DISPATCH 2 /* call original opcode handler */ #define ZEND_USER_OPCODE_ENTER 3 /* enter into new op_array without recursion */ #define ZEND_USER_OPCODE_LEAVE 4 /* return to calling op_array within the same executor */ #define ZEND_USER_OPCODE_DISPATCH_TO 0x100 /* call original handler of returned opcode */ ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler); ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode); /* former zend_execute_locks.h */ typedef struct _zend_free_op { zval* var; /* int is_var; */ } zend_free_op; ZEND_API zval *zend_get_zval_ptr(int op_type, const znode_op *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC); ZEND_API zval **zend_get_zval_ptr_ptr(int op_type, const znode_op *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC); ZEND_API int zend_do_fcall(ZEND_OPCODE_HANDLER_ARGS); #define CACHED_PTR(num) \ EG(active_op_array)->run_time_cache[(num)] #define CACHE_PTR(num, ptr) do { \ EG(active_op_array)->run_time_cache[(num)] = (ptr); \ } while (0) #define CACHED_POLYMORPHIC_PTR(num, ce) \ ((EG(active_op_array)->run_time_cache[(num)] == (ce)) ? \ EG(active_op_array)->run_time_cache[(num) + 1] : \ NULL) #define CACHE_POLYMORPHIC_PTR(num, ce, ptr) do { \ EG(active_op_array)->run_time_cache[(num)] = (ce); \ EG(active_op_array)->run_time_cache[(num) + 1] = (ptr); \ } while (0) END_EXTERN_C() #endif /* ZEND_EXECUTE_H */ /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * indent-tabs-mode: t * End: */