source: trunk/processor/head.m4 @ 1458

Last change on this file since 1458 was 1458, checked in by moo, 13 months ago

relocate: assert that srcptr use on non-nullable only

  • Property svn:eol-style set to native
File size: 10.6 KB
Line 
1dnl {{{ === program start ========================================
2divert(0)
3#include <string.h>
4#include <stdio.h>
5
6#include "php.h"
7#include "zend_extensions.h"
8#include "zend_compile.h"
9#include "zend_API.h"
10#include "zend_ini.h"
11
12EXPORT(`#include "xcache.h"')
13EXPORT(`#include "mod_cacher/xc_cache.h"')
14EXPORT(`#include "xcache/xc_shm.h"')
15EXPORT(`#include "xcache/xc_allocator.h"')
16#include "xc_processor.h"
17#include "xcache/xc_const_string.h"
18#include "xcache/xc_utils.h"
19#include "util/xc_align.h"
20#include "xcache_globals.h"
21
22#if defined(HARDENING_PATCH_HASH_PROTECT) && HARDENING_PATCH_HASH_PROTECT
23extern unsigned int zend_hash_canary;
24#endif
25
26define(`SIZEOF_zend_uint', `sizeof(zend_uint)')
27define(`COUNTOF_zend_uint', `1')
28define(`SIZEOF_int', `sizeof(int)')
29define(`COUNTOF_int', `1')
30define(`SIZEOF_zend_function', `sizeof(zend_function)')
31define(`COUNTOF_zend_function', `1')
32define(`SIZEOF_zval_ptr', `sizeof(zval_ptr)')
33define(`COUNTOF_zval_ptr', `1')
34define(`SIZEOF_zval_ptr_nullable', `sizeof(zval_ptr_nullable)')
35define(`COUNTOF_zval_ptr_nullable', `1')
36define(`SIZEOF_zend_trait_alias_ptr', `sizeof(zend_trait_alias)')
37define(`COUNTOF_zend_trait_alias_ptr', `1')
38define(`SIZEOF_zend_trait_precedence_ptr', `sizeof(zend_trait_precedence)')
39define(`COUNTOF_zend_trait_precedence_ptr', `1')
40define(`SIZEOF_xc_entry_name_t', `sizeof(xc_entry_name_t)')
41define(`COUNTOF_xc_entry_name_t', `1')
42define(`SIZEOF_xc_ztstring', `sizeof(xc_ztstring)')
43define(`COUNTOF_xc_ztstring', `1')
44
45ifdef(`XCACHE_ENABLE_TEST', `
46#undef NDEBUG
47#include <assert.h>
48m4_errprint(`AUTOCHECK INFO: runtime autocheck Enabled (debug build)')
49', `
50m4_errprint(`AUTOCHECK INFO: runtime autocheck Disabled (optimized build)')
51')
52ifdef(`DEBUG_SIZE', `static int xc_totalsize = 0;')
53
54sinclude(builddir`/structinfo.m4')
55
56#ifndef NDEBUG
57#   undef inline
58#define inline
59#endif
60
61typedef zval *zval_ptr;
62typedef zval *zval_ptr_nullable;
63typedef char *xc_ztstring;
64#ifdef ZEND_ENGINE_2_4
65typedef zend_trait_alias *zend_trait_alias_ptr;
66typedef zend_trait_precedence *zend_trait_precedence_ptr;
67#endif
68#ifdef ZEND_ENGINE_2_3
69typedef int last_brk_cont_t;
70#else
71typedef zend_uint last_brk_cont_t;
72#endif
73
74typedef zend_uchar xc_zval_type_t;
75typedef int xc_op_type;
76typedef zend_uchar xc_opcode;
77#ifdef IS_UNICODE
78typedef UChar zstr_uchar;
79#endif
80typedef char  zstr_char;
81
82#define MAX_DUP_STR_LEN 256
83
84#define ptradd(type, ptr, ptrdiff) ((type) (((char *) (ptr)) + (ptrdiff)))
85#define ptrsub(ptr1, ptr2) (((char *) (ptr1)) - ((char *) (ptr2)))
86#ifdef NDEBUG
87    #define notnullable(ptr) (ptr)
88#else
89static inline void *notnullable(void *ptr)
90{
91    assert(ptr);
92    return ptr;
93}
94#endif
95dnl }}}
96dnl {{{ _xc_processor_t
97typedef struct _xc_processor_t {
98    char *p;
99    size_t size;
100    HashTable strings;
101    HashTable zvalptrs;
102    zend_bool reference; /* enable if to deal with reference */
103    zend_bool have_references;
104    const xc_entry_php_t *entry_php_src;
105    const xc_entry_php_t *entry_php_dst;
106    const xc_entry_data_php_t *php_src;
107    const xc_entry_data_php_t *php_dst;
108    xc_shm_t                  *shm;
109    xc_allocator_t            *allocator;
110    const zend_class_entry *cache_ce;
111    zend_ulong cache_class_index;
112
113    const zend_op_array    *active_op_array_src;
114    zend_op_array          *active_op_array_dst;
115    const zend_class_entry *active_class_entry_src;
116    zend_class_entry       *active_class_entry_dst;
117    zend_uint                 active_class_index;
118    zend_uint                 active_op_array_index;
119    const xc_op_array_info_t *active_op_array_infos_src;
120
121    zend_bool readonly_protection; /* wheather it's present */
122IFAUTOCHECK(xc_stack_t allocsizes;)
123} xc_processor_t;
124dnl }}}
125EXPORT(`typedef struct _xc_dasm_t { const zend_op_array *active_op_array_src; } xc_dasm_t;')
126/* {{{ memsetptr */
127IFAUTOCHECK(`dnl
128static void *memsetptr(void *mem, void *content, size_t n)
129{
130    void **p = (void **) mem;
131    void **end = (void **) ((char *) mem + n);
132    while (p < end - sizeof(content)) {
133        *p = content;
134        p += sizeof(content);
135    }
136    if (p < end) {
137        memset(p, -1, end - p);
138    }
139    return mem;
140}
141')
142/* }}} */
143#ifdef HAVE_XCACHE_DPRINT
144static void xc_dprint_indent(int indent) /* {{{ */
145{
146    int i;
147    for (i = 0; i < indent; i ++) {
148        fprintf(stderr, "  ");
149    }
150}
151/* }}} */
152static void xc_dprint_str_len(const char *str, int len) /* {{{ */
153{
154    const unsigned char *p = (const unsigned char *) str;
155    int i;
156    for (i = 0; i < len; i ++) {
157        if (p[i] < 32 || p[i] == 127) {
158            fprintf(stderr, "\\%03o", (unsigned int) p[i]);
159        }
160        else {
161            fputc(p[i], stderr);
162        }
163    }
164}
165/* }}} */
166#endif
167static inline size_t xc_zstrlen_char(const_zstr s) /* {{{ */
168{
169    return strlen(ZSTR_S(s));
170}
171/* }}} */
172#ifdef IS_UNICODE
173static inline size_t xc_zstrlen_uchar(zstr s) /* {{{ */
174{
175    return u_strlen(ZSTR_U(s));
176}
177/* }}} */
178static inline size_t xc_zstrlen(int type, const_zstr s) /* {{{ */
179{
180    return type == IS_UNICODE ? xc_zstrlen_uchar(s) : xc_zstrlen_char(s);
181}
182/* }}} */
183#else
184/* {{{ xc_zstrlen */
185#define xc_zstrlen(dummy, s) xc_zstrlen_char(s)
186/* }}} */
187#endif
188#undef C_RELAYLINE
189#define C_RELAYLINE
190IFAUTOCHECK(`
191#undef C_RELAYLINE
192#define C_RELAYLINE , __LINE__
193')
194static inline void xc_calc_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
195    pushdef(`PROCESSOR_TYPE', `calc')
196    pushdef(`__LINE__', `relayline')
197    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
198    long dummy = 1;
199
200    if (realsize > MAX_DUP_STR_LEN) {
201        ALLOC(, char, realsize)
202    }
203    else if (zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &dummy, sizeof(dummy), NULL) == SUCCESS) {
204        /* new string */
205        ALLOC(, char, realsize)
206    }
207    IFAUTOCHECK(`
208        else {
209            dnl fprintf(stderr, "dupstr %s\n", ZSTR_S(str));
210        }
211    ')
212    popdef(`__LINE__')
213    popdef(`PROCESSOR_TYPE')
214}
215/* }}} */
216static inline zstr xc_store_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
217    pushdef(`PROCESSOR_TYPE', `store')
218    pushdef(`__LINE__', `relayline')
219    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
220    zstr ret, *pret;
221
222    if (realsize > MAX_DUP_STR_LEN) {
223        ALLOC(ZSTR_V(ret), char, realsize)
224        memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
225        return ret;
226    }
227
228    if (zend_u_hash_find(&processor->strings, type, str, (uint) size, (void **) &pret) == SUCCESS) {
229        return *pret;
230    }
231
232    /* new string */
233    ALLOC(ZSTR_V(ret), char, realsize)
234    memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
235    zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &ret, sizeof(zstr), NULL);
236    return ret;
237
238    popdef(`__LINE__')
239    popdef(`PROCESSOR_TYPE')
240}
241/* }}} */
242/* {{{ xc_get_class_num
243 * return class_index + 1
244 */
245static zend_ulong xc_get_class_num(xc_processor_t *processor, zend_class_entry *ce) {
246    zend_uint i;
247    const xc_entry_data_php_t *php = processor->php_src;
248    zend_class_entry *ceptr;
249
250    if (processor->cache_ce == ce) {
251        return processor->cache_class_index + 1;
252    }
253    for (i = 0; i < php->classinfo_cnt; i ++) {
254        ceptr = CestToCePtr(php->classinfos[i].cest);
255        if (ZCEP_REFCOUNT_PTR(ceptr) == ZCEP_REFCOUNT_PTR(ce)) {
256            processor->cache_ce = ceptr;
257            processor->cache_class_index = i;
258            return i + 1;
259        }
260    }
261    assert(0);
262    return (zend_ulong) -1;
263}
264define(`xc_get_class_num', `IFSTORE(``xc_get_class_num'($@)',``xc_get_class_num' can be use in store only')')
265/* }}} */
266#ifdef ZEND_ENGINE_2
267static zend_class_entry *xc_get_class(xc_processor_t *processor, zend_ulong class_num) { /* {{{ */
268    /* must be parent or currrent class */
269    assert(class_num <= processor->active_class_index + 1);
270    return CestToCePtr(processor->php_dst->classinfos[class_num - 1].cest);
271}
272define(`xc_get_class', `IFRESTORE(``xc_get_class'($@)',``xc_get_class' can be use in restore only')')
273/* }}} */
274#endif
275#ifdef ZEND_ENGINE_2
276/* fix method on store */
277static void xc_fix_method(xc_processor_t *processor, zend_op_array *dst TSRMLS_DC) /* {{{ */
278{
279    zend_function *zf = (zend_function *) dst;
280    zend_class_entry *ce = processor->active_class_entry_dst;
281    const zend_class_entry *srcce = processor->active_class_entry_src;
282
283    /* Fixing up the default functions for objects here since
284     * we need to compare with the newly allocated functions
285     *
286     * caveat: a sub-class method can have the same name as the
287     * parent~s constructor and create problems.
288     */
289
290    if (zf->common.fn_flags & ZEND_ACC_CTOR) {
291        if (!ce->constructor) {
292            ce->constructor = zf;
293        }
294    }
295    else if (zf->common.fn_flags & ZEND_ACC_DTOR) {
296        ce->destructor = zf;
297    }
298    else if (zf->common.fn_flags & ZEND_ACC_CLONE) {
299        ce->clone = zf;
300    }
301    else {
302    pushdef(`SET_IF_SAME_NAMEs', `
303        SET_IF_SAME_NAME(__get);
304        SET_IF_SAME_NAME(__set);
305#ifdef ZEND_ENGINE_2_1
306        SET_IF_SAME_NAME(__unset);
307        SET_IF_SAME_NAME(__isset);
308#endif
309        SET_IF_SAME_NAME(__call);
310#ifdef ZEND_CALLSTATIC_FUNC_NAME
311        SET_IF_SAME_NAME(__callstatic);
312#endif
313#if defined(ZEND_ENGINE_2_2) || PHP_MAJOR_VERSION >= 6
314        SET_IF_SAME_NAME(__tostring);
315#endif
316    ')
317#ifdef IS_UNICODE
318        if (UG(unicode)) {
319#define SET_IF_SAME_NAME(member) \
320            do { \
321                if (srcce->member && u_strcmp(ZSTR_U(zf->common.function_name), ZSTR_U(srcce->member->common.function_name)) == 0) { \
322                    ce->member = zf; \
323                } \
324            } \
325            while(0)
326
327            SET_IF_SAME_NAMEs()
328#undef SET_IF_SAME_NAME
329        }
330        else
331#endif
332        do {
333#define SET_IF_SAME_NAME(member) \
334            do { \
335                if (srcce->member && strcmp(ZSTR_S(zf->common.function_name), ZSTR_S(srcce->member->common.function_name)) == 0) { \
336                    ce->member = zf; \
337                } \
338            } \
339            while(0)
340
341            SET_IF_SAME_NAMEs()
342#undef SET_IF_SAME_NAME
343        } while (0);
344
345    popdef(`SET_IF_SAME_NAMEs')
346
347    }
348}
349/* }}} */
350#endif
351/* {{{ call op_array ctor handler */
352extern zend_bool xc_have_op_array_ctor;
353static void xc_zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
354{
355    if (extension->op_array_ctor) {
356        extension->op_array_ctor(op_array);
357    }
358}
359/* }}} */
360/* {{{ field name checker */
361IFAUTOCHECK(`dnl
362static int xc_check_names(const char *file, int line, const char *functionName, const char **assert_names, size_t assert_names_count, HashTable *done_names)
363{
364    int errors = 0;
365    if (assert_names_count) {
366        size_t i;
367        Bucket *b;
368
369        for (i = 0; i < assert_names_count; ++i) {
370            if (!zend_u_hash_exists(done_names, IS_STRING, assert_names[i], (uint) strlen(assert_names[i]) + 1)) {
371                fprintf(stderr
372                    , "Error: missing field at %s `#'%d %s`' : %s\n"
373                    , file, line, functionName
374                    , assert_names[i]
375                    );
376                ++errors;
377            }
378        }
379
380        for (b = done_names->pListHead; b != NULL; b = b->pListNext) {
381            int known = 0;
382            for (i = 0; i < assert_names_count; ++i) {
383                if (strcmp(assert_names[i], BUCKET_KEY_S(b)) == 0) {
384                    known = 1;
385                    break;
386                }
387            }
388            if (!known) {
389                fprintf(stderr
390                    , "Error: unknown field at %s `#'%d %s`' : %s\n"
391                    , file, line, functionName
392                    , BUCKET_KEY_S(b)
393                    );
394                ++errors;
395            }
396        }
397    }
398    return errors;
399}
400')
401/* }}} */
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