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6434c93a27
If we only store the biased pointer, the map ptr region will not be recognized as reachable memory by leak checkers. This is primarily problematic for fuzzing, because this is persistent memory that may be reallocated during the request, without being an actual leak. Avoid this by simply storing both the real base pointer of the allocation, as well as the biased base pointer used for accesses.
345 lines
8.6 KiB
C
345 lines
8.6 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@php.net> |
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| Zeev Suraski <zeev@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef ZEND_GLOBALS_H
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#define ZEND_GLOBALS_H
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#include <setjmp.h>
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#include "zend_globals_macros.h"
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#include "zend_stack.h"
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#include "zend_ptr_stack.h"
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#include "zend_hash.h"
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#include "zend_llist.h"
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#include "zend_objects.h"
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#include "zend_objects_API.h"
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#include "zend_modules.h"
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#include "zend_float.h"
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#include "zend_multibyte.h"
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#include "zend_multiply.h"
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#include "zend_arena.h"
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/* Define ZTS if you want a thread-safe Zend */
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/*#undef ZTS*/
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#ifdef ZTS
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BEGIN_EXTERN_C()
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ZEND_API extern int compiler_globals_id;
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ZEND_API extern int executor_globals_id;
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ZEND_API extern size_t compiler_globals_offset;
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ZEND_API extern size_t executor_globals_offset;
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END_EXTERN_C()
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#endif
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#define SYMTABLE_CACHE_SIZE 32
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#include "zend_compile.h"
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/* excpt.h on Digital Unix 4.0 defines function_table */
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#undef function_table
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typedef struct _zend_vm_stack *zend_vm_stack;
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typedef struct _zend_ini_entry zend_ini_entry;
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typedef struct _zend_fiber_context zend_fiber_context;
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typedef struct _zend_fiber zend_fiber;
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struct _zend_compiler_globals {
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zend_stack loop_var_stack;
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zend_class_entry *active_class_entry;
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zend_string *compiled_filename;
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int zend_lineno;
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zend_op_array *active_op_array;
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HashTable *function_table; /* function symbol table */
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HashTable *class_table; /* class table */
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HashTable *auto_globals;
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/* Refer to zend_yytnamerr() in zend_language_parser.y for meaning of values */
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zend_uchar parse_error;
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bool in_compilation;
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bool short_tags;
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bool unclean_shutdown;
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bool ini_parser_unbuffered_errors;
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zend_llist open_files;
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struct _zend_ini_parser_param *ini_parser_param;
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bool skip_shebang;
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bool increment_lineno;
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bool variable_width_locale; /* UTF-8, Shift-JIS, Big5, ISO 2022, EUC, etc */
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bool ascii_compatible_locale; /* locale uses ASCII characters as singletons */
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/* and don't use them as lead/trail units */
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zend_string *doc_comment;
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uint32_t extra_fn_flags;
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uint32_t compiler_options; /* set of ZEND_COMPILE_* constants */
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zend_oparray_context context;
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zend_file_context file_context;
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zend_arena *arena;
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HashTable interned_strings;
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const zend_encoding **script_encoding_list;
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size_t script_encoding_list_size;
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bool multibyte;
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bool detect_unicode;
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bool encoding_declared;
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zend_ast *ast;
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zend_arena *ast_arena;
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zend_stack delayed_oplines_stack;
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HashTable *memoized_exprs;
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int memoize_mode;
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void *map_ptr_real_base;
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void *map_ptr_base;
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size_t map_ptr_size;
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size_t map_ptr_last;
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HashTable *delayed_variance_obligations;
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HashTable *delayed_autoloads;
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HashTable *unlinked_uses;
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zend_class_entry *current_linking_class;
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uint32_t rtd_key_counter;
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zend_stack short_circuiting_opnums;
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};
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struct _zend_executor_globals {
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zval uninitialized_zval;
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zval error_zval;
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/* symbol table cache */
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zend_array *symtable_cache[SYMTABLE_CACHE_SIZE];
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/* Pointer to one past the end of the symtable_cache */
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zend_array **symtable_cache_limit;
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/* Pointer to first unused symtable_cache slot */
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zend_array **symtable_cache_ptr;
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zend_array symbol_table; /* main symbol table */
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HashTable included_files; /* files already included */
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JMP_BUF *bailout;
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int error_reporting;
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int exit_status;
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HashTable *function_table; /* function symbol table */
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HashTable *class_table; /* class table */
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HashTable *zend_constants; /* constants table */
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zval *vm_stack_top;
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zval *vm_stack_end;
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zend_vm_stack vm_stack;
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size_t vm_stack_page_size;
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struct _zend_execute_data *current_execute_data;
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zend_class_entry *fake_scope; /* used to avoid checks accessing properties */
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uint32_t jit_trace_num; /* Used by tracing JIT to reference the currently running trace */
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zend_long precision;
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int ticks_count;
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uint32_t persistent_constants_count;
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uint32_t persistent_functions_count;
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uint32_t persistent_classes_count;
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HashTable *in_autoload;
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bool full_tables_cleanup;
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/* for extended information support */
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bool no_extensions;
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bool vm_interrupt;
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bool timed_out;
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zend_long hard_timeout;
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#ifdef ZEND_WIN32
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OSVERSIONINFOEX windows_version_info;
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#endif
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HashTable regular_list;
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HashTable persistent_list;
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int user_error_handler_error_reporting;
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zval user_error_handler;
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zval user_exception_handler;
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zend_stack user_error_handlers_error_reporting;
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zend_stack user_error_handlers;
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zend_stack user_exception_handlers;
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zend_error_handling_t error_handling;
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zend_class_entry *exception_class;
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/* timeout support */
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zend_long timeout_seconds;
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int capture_warnings_during_sccp;
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HashTable *ini_directives;
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HashTable *modified_ini_directives;
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zend_ini_entry *error_reporting_ini_entry;
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zend_objects_store objects_store;
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zend_object *exception, *prev_exception;
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const zend_op *opline_before_exception;
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zend_op exception_op[3];
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struct _zend_module_entry *current_module;
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bool active;
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zend_uchar flags;
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zend_long assertions;
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uint32_t ht_iterators_count; /* number of allocated slots */
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uint32_t ht_iterators_used; /* number of used slots */
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HashTableIterator *ht_iterators;
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HashTableIterator ht_iterators_slots[16];
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void *saved_fpu_cw_ptr;
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#if XPFPA_HAVE_CW
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XPFPA_CW_DATATYPE saved_fpu_cw;
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#endif
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zend_function trampoline;
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zend_op call_trampoline_op;
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HashTable weakrefs;
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bool exception_ignore_args;
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zend_long exception_string_param_max_len;
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zend_get_gc_buffer get_gc_buffer;
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zend_fiber_context *main_fiber_context;
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zend_fiber_context *current_fiber_context;
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/* Active instance of Fiber. */
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zend_fiber *active_fiber;
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/* Default fiber C stack size. */
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zend_long fiber_stack_size;
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/* If record_errors is enabled, all emitted diagnostics will be recorded,
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* in addition to being processed as usual. */
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bool record_errors;
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uint32_t num_errors;
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zend_error_info **errors;
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void *reserved[ZEND_MAX_RESERVED_RESOURCES];
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};
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#define EG_FLAGS_INITIAL (0)
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#define EG_FLAGS_IN_SHUTDOWN (1<<0)
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#define EG_FLAGS_OBJECT_STORE_NO_REUSE (1<<1)
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#define EG_FLAGS_IN_RESOURCE_SHUTDOWN (1<<2)
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struct _zend_ini_scanner_globals {
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zend_file_handle *yy_in;
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zend_file_handle *yy_out;
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unsigned int yy_leng;
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unsigned char *yy_start;
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unsigned char *yy_text;
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unsigned char *yy_cursor;
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unsigned char *yy_marker;
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unsigned char *yy_limit;
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int yy_state;
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zend_stack state_stack;
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zend_string *filename;
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int lineno;
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/* Modes are: ZEND_INI_SCANNER_NORMAL, ZEND_INI_SCANNER_RAW, ZEND_INI_SCANNER_TYPED */
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int scanner_mode;
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};
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typedef enum {
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ON_TOKEN,
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ON_FEEDBACK,
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ON_STOP
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} zend_php_scanner_event;
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struct _zend_php_scanner_globals {
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zend_file_handle *yy_in;
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zend_file_handle *yy_out;
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unsigned int yy_leng;
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unsigned char *yy_start;
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unsigned char *yy_text;
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unsigned char *yy_cursor;
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unsigned char *yy_marker;
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unsigned char *yy_limit;
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int yy_state;
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zend_stack state_stack;
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zend_ptr_stack heredoc_label_stack;
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zend_stack nest_location_stack; /* for syntax error reporting */
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bool heredoc_scan_ahead;
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int heredoc_indentation;
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bool heredoc_indentation_uses_spaces;
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/* original (unfiltered) script */
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unsigned char *script_org;
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size_t script_org_size;
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/* filtered script */
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unsigned char *script_filtered;
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size_t script_filtered_size;
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/* input/output filters */
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zend_encoding_filter input_filter;
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zend_encoding_filter output_filter;
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const zend_encoding *script_encoding;
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/* initial string length after scanning to first variable */
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int scanned_string_len;
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/* hooks */
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void (*on_event)(
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zend_php_scanner_event event, int token, int line,
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const char *text, size_t length, void *context);
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void *on_event_context;
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};
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#endif /* ZEND_GLOBALS_H */
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