source: trunk/processor/head.m4 @ 1469

Last change on this file since 1469 was 1469, checked in by moo, 5 months ago

export is in xc_processor.h

  • 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 <stddef.h>')
13EXPORT(`#include "xcache.h"')
14EXPORT(`#include "mod_cacher/xc_cache.h"')
15EXPORT(`#include "xcache/xc_shm.h"')
16EXPORT(`#include "xcache/xc_allocator.h"')
17#include "xc_processor.h"
18#include "xcache/xc_const_string.h"
19#include "xcache/xc_utils.h"
20#include "util/xc_align.h"
21#include "xcache_globals.h"
22
23#if defined(HARDENING_PATCH_HASH_PROTECT) && HARDENING_PATCH_HASH_PROTECT
24extern unsigned int zend_hash_canary;
25#endif
26
27define(`SIZEOF_zend_uint', `sizeof(zend_uint)')
28define(`COUNTOF_zend_uint', `1')
29define(`SIZEOF_int', `sizeof(int)')
30define(`COUNTOF_int', `1')
31define(`SIZEOF_zend_function', `sizeof(zend_function)')
32define(`COUNTOF_zend_function', `1')
33define(`SIZEOF_zval_ptr', `sizeof(zval_ptr)')
34define(`COUNTOF_zval_ptr', `1')
35define(`SIZEOF_zval_ptr_nullable', `sizeof(zval_ptr_nullable)')
36define(`COUNTOF_zval_ptr_nullable', `1')
37define(`SIZEOF_zend_trait_alias_ptr', `sizeof(zend_trait_alias)')
38define(`COUNTOF_zend_trait_alias_ptr', `1')
39define(`SIZEOF_zend_trait_precedence_ptr', `sizeof(zend_trait_precedence)')
40define(`COUNTOF_zend_trait_precedence_ptr', `1')
41define(`SIZEOF_xc_entry_name_t', `sizeof(xc_entry_name_t)')
42define(`COUNTOF_xc_entry_name_t', `1')
43define(`SIZEOF_xc_ztstring', `sizeof(xc_ztstring)')
44define(`COUNTOF_xc_ztstring', `1')
45
46ifdef(`XCACHE_ENABLE_TEST', `
47#undef NDEBUG
48#include <assert.h>
49m4_errprint(`AUTOCHECK INFO: runtime autocheck Enabled (debug build)')
50', `
51m4_errprint(`AUTOCHECK INFO: runtime autocheck Disabled (optimized build)')
52')
53ifdef(`DEBUG_SIZE', `static int xc_totalsize = 0;')
54
55sinclude(builddir`/structinfo.m4')
56
57#ifndef NDEBUG
58#   undef inline
59#define inline
60#endif
61
62typedef zval *zval_ptr;
63typedef zval *zval_ptr_nullable;
64typedef char *xc_ztstring;
65#ifdef ZEND_ENGINE_2_4
66typedef zend_trait_alias *zend_trait_alias_ptr;
67typedef zend_trait_precedence *zend_trait_precedence_ptr;
68#endif
69#ifdef ZEND_ENGINE_2_3
70typedef int last_brk_cont_t;
71#else
72typedef zend_uint last_brk_cont_t;
73#endif
74
75typedef zend_uchar xc_zval_type_t;
76typedef int xc_op_type;
77typedef zend_uchar xc_opcode;
78#ifdef IS_UNICODE
79typedef UChar zstr_uchar;
80#endif
81typedef char  zstr_char;
82
83#define MAX_DUP_STR_LEN 256
84
85#define ptradd(type, ptr, ptrdiff) ((type) (((char *) (ptr)) + (ptrdiff)))
86#define ptrsub(ptr1, ptr2) (((char *) (ptr1)) - ((char *) (ptr2)))
87#ifdef NDEBUG
88    #define notnullable(ptr) (ptr)
89#else
90static inline void *notnullable(const void *ptr)
91{
92    assert(ptr);
93    return (void *) ptr;
94}
95#endif
96dnl }}}
97dnl {{{ _xc_processor_t
98typedef struct _xc_processor_t {
99    char *p;
100    size_t size;
101    HashTable strings;
102    HashTable zvalptrs;
103    zend_bool handle_reference; /* enable if to deal with reference */
104    zend_bool have_references;
105    ptrdiff_t relocatediff;
106
107    const xc_entry_php_t *entry_php_src;
108    const xc_entry_php_t *entry_php_dst;
109    const xc_entry_data_php_t *php_src;
110    const xc_entry_data_php_t *php_dst;
111    const zend_class_entry *cache_ce;
112    zend_ulong cache_class_index;
113
114    const zend_op_array    *active_op_array_src;
115    zend_op_array          *active_op_array_dst;
116    const zend_class_entry *active_class_entry_src;
117    zend_class_entry       *active_class_entry_dst;
118    zend_uint                 active_class_index;
119    zend_uint                 active_op_array_index;
120    const xc_op_array_info_t *active_op_array_infos_src;
121
122    zend_bool readonly_protection; /* wheather it's present */
123IFAUTOCHECK(xc_stack_t allocsizes;)
124} xc_processor_t;
125dnl }}}
126EXPORT(`typedef struct _xc_dasm_t { const zend_op_array *active_op_array_src; } xc_dasm_t;')
127/* {{{ memsetptr */
128IFAUTOCHECK(`dnl
129static void *memsetptr(void *mem, void *content, size_t n)
130{
131    void **p = (void **) mem;
132    void **end = (void **) ((char *) mem + n);
133    while (p < end - sizeof(content)) {
134        *p = content;
135        p += sizeof(content);
136    }
137    if (p < end) {
138        memset(p, -1, end - p);
139    }
140    return mem;
141}
142')
143/* }}} */
144#ifdef HAVE_XCACHE_DPRINT
145static void xc_dprint_indent(int indent) /* {{{ */
146{
147    int i;
148    for (i = 0; i < indent; i ++) {
149        fprintf(stderr, "  ");
150    }
151}
152/* }}} */
153static void xc_dprint_str_len(const char *str, int len) /* {{{ */
154{
155    const unsigned char *p = (const unsigned char *) str;
156    int i;
157    for (i = 0; i < len; i ++) {
158        if (p[i] < 32 || p[i] == 127) {
159            fprintf(stderr, "\\%03o", (unsigned int) p[i]);
160        }
161        else {
162            fputc(p[i], stderr);
163        }
164    }
165}
166/* }}} */
167#endif
168static inline size_t xc_zstrlen_char(const_zstr s) /* {{{ */
169{
170    return strlen(ZSTR_S(s));
171}
172/* }}} */
173#ifdef IS_UNICODE
174static inline size_t xc_zstrlen_uchar(zstr s) /* {{{ */
175{
176    return u_strlen(ZSTR_U(s));
177}
178/* }}} */
179static inline size_t xc_zstrlen(int type, const_zstr s) /* {{{ */
180{
181    return type == IS_UNICODE ? xc_zstrlen_uchar(s) : xc_zstrlen_char(s);
182}
183/* }}} */
184#else
185/* {{{ xc_zstrlen */
186#define xc_zstrlen(dummy, s) xc_zstrlen_char(s)
187/* }}} */
188#endif
189#undef C_RELAYLINE
190#define C_RELAYLINE
191IFAUTOCHECK(`
192#undef C_RELAYLINE
193#define C_RELAYLINE , __LINE__
194')
195static inline void xc_calc_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
196    pushdef(`PROCESSOR_TYPE', `calc')
197    pushdef(`__LINE__', `relayline')
198    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
199    long dummy = 1;
200
201    if (realsize > MAX_DUP_STR_LEN) {
202        ALLOC(, char, realsize)
203    }
204    else if (zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &dummy, sizeof(dummy), NULL) == SUCCESS) {
205        /* new string */
206        ALLOC(, char, realsize)
207    }
208    IFAUTOCHECK(`
209        else {
210            dnl fprintf(stderr, "dupstr %s\n", ZSTR_S(str));
211        }
212    ')
213    popdef(`__LINE__')
214    popdef(`PROCESSOR_TYPE')
215}
216/* }}} */
217static inline zstr xc_store_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
218    pushdef(`PROCESSOR_TYPE', `store')
219    pushdef(`__LINE__', `relayline')
220    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
221    zstr ret, *pret;
222
223    if (realsize > MAX_DUP_STR_LEN) {
224        ALLOC(ZSTR_V(ret), char, realsize)
225        memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
226        return ret;
227    }
228
229    if (zend_u_hash_find(&processor->strings, type, str, (uint) size, (void **) &pret) == SUCCESS) {
230        return *pret;
231    }
232
233    /* new string */
234    ALLOC(ZSTR_V(ret), char, realsize)
235    memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
236    zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &ret, sizeof(zstr), NULL);
237    return ret;
238
239    popdef(`__LINE__')
240    popdef(`PROCESSOR_TYPE')
241}
242/* }}} */
243/* {{{ xc_get_class_num
244 * return class_index + 1
245 */
246static zend_ulong xc_get_class_num(xc_processor_t *processor, zend_class_entry *ce) {
247    zend_uint i;
248    const xc_entry_data_php_t *php = processor->php_src;
249    zend_class_entry *ceptr;
250
251    if (processor->cache_ce == ce) {
252        return processor->cache_class_index + 1;
253    }
254    for (i = 0; i < php->classinfo_cnt; i ++) {
255        ceptr = CestToCePtr(php->classinfos[i].cest);
256        if (ZCEP_REFCOUNT_PTR(ceptr) == ZCEP_REFCOUNT_PTR(ce)) {
257            processor->cache_ce = ceptr;
258            processor->cache_class_index = i;
259            return i + 1;
260        }
261    }
262    assert(0);
263    return (zend_ulong) -1;
264}
265define(`xc_get_class_num', `IFSTORE(``xc_get_class_num'($@)',``xc_get_class_num' can be use in store only')')
266/* }}} */
267#ifdef ZEND_ENGINE_2
268static zend_class_entry *xc_get_class(xc_processor_t *processor, zend_ulong class_num) { /* {{{ */
269    /* must be parent or currrent class */
270    assert(class_num <= processor->active_class_index + 1);
271    return CestToCePtr(processor->php_dst->classinfos[class_num - 1].cest);
272}
273define(`xc_get_class', `IFRESTORE(``xc_get_class'($@)',``xc_get_class' can be use in restore only')')
274/* }}} */
275#endif
276#ifdef ZEND_ENGINE_2
277/* fix method on store */
278static void xc_fix_method(xc_processor_t *processor, zend_op_array *dst TSRMLS_DC) /* {{{ */
279{
280    zend_function *zf = (zend_function *) dst;
281    zend_class_entry *ce = processor->active_class_entry_dst;
282    const zend_class_entry *srcce = processor->active_class_entry_src;
283
284    /* Fixing up the default functions for objects here since
285     * we need to compare with the newly allocated functions
286     *
287     * caveat: a sub-class method can have the same name as the
288     * parent~s constructor and create problems.
289     */
290
291    if (zf->common.fn_flags & ZEND_ACC_CTOR) {
292        if (!ce->constructor) {
293            ce->constructor = zf;
294        }
295    }
296    else if (zf->common.fn_flags & ZEND_ACC_DTOR) {
297        ce->destructor = zf;
298    }
299    else if (zf->common.fn_flags & ZEND_ACC_CLONE) {
300        ce->clone = zf;
301    }
302    else {
303    pushdef(`SET_IF_SAME_NAMEs', `
304        SET_IF_SAME_NAME(__get);
305        SET_IF_SAME_NAME(__set);
306#ifdef ZEND_ENGINE_2_1
307        SET_IF_SAME_NAME(__unset);
308        SET_IF_SAME_NAME(__isset);
309#endif
310        SET_IF_SAME_NAME(__call);
311#ifdef ZEND_CALLSTATIC_FUNC_NAME
312        SET_IF_SAME_NAME(__callstatic);
313#endif
314#if defined(ZEND_ENGINE_2_2) || PHP_MAJOR_VERSION >= 6
315        SET_IF_SAME_NAME(__tostring);
316#endif
317    ')
318#ifdef IS_UNICODE
319        if (UG(unicode)) {
320#define SET_IF_SAME_NAME(member) \
321            do { \
322                if (srcce->member && u_strcmp(ZSTR_U(zf->common.function_name), ZSTR_U(srcce->member->common.function_name)) == 0) { \
323                    ce->member = zf; \
324                } \
325            } \
326            while(0)
327
328            SET_IF_SAME_NAMEs()
329#undef SET_IF_SAME_NAME
330        }
331        else
332#endif
333        do {
334#define SET_IF_SAME_NAME(member) \
335            do { \
336                if (srcce->member && strcmp(ZSTR_S(zf->common.function_name), ZSTR_S(srcce->member->common.function_name)) == 0) { \
337                    ce->member = zf; \
338                } \
339            } \
340            while(0)
341
342            SET_IF_SAME_NAMEs()
343#undef SET_IF_SAME_NAME
344        } while (0);
345
346    popdef(`SET_IF_SAME_NAMEs')
347
348    }
349}
350/* }}} */
351#endif
352/* {{{ call op_array ctor handler */
353extern zend_bool xc_have_op_array_ctor;
354static void xc_zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
355{
356    if (extension->op_array_ctor) {
357        extension->op_array_ctor(op_array);
358    }
359}
360/* }}} */
361/* {{{ field name checker */
362IFAUTOCHECK(`dnl
363static int xc_check_names(const char *file, int line, const char *functionName, const char **assert_names, size_t assert_names_count, HashTable *done_names)
364{
365    int errors = 0;
366    if (assert_names_count) {
367        size_t i;
368        Bucket *b;
369
370        for (i = 0; i < assert_names_count; ++i) {
371            if (!zend_u_hash_exists(done_names, IS_STRING, assert_names[i], (uint) strlen(assert_names[i]) + 1)) {
372                fprintf(stderr
373                    , "Error: missing field at %s `#'%d %s`' : %s\n"
374                    , file, line, functionName
375                    , assert_names[i]
376                    );
377                ++errors;
378            }
379        }
380
381        for (b = done_names->pListHead; b != NULL; b = b->pListNext) {
382            int known = 0;
383            for (i = 0; i < assert_names_count; ++i) {
384                if (strcmp(assert_names[i], BUCKET_KEY_S(b)) == 0) {
385                    known = 1;
386                    break;
387                }
388            }
389            if (!known) {
390                fprintf(stderr
391                    , "Error: unknown field at %s `#'%d %s`' : %s\n"
392                    , file, line, functionName
393                    , BUCKET_KEY_S(b)
394                    );
395                ++errors;
396            }
397        }
398    }
399    return errors;
400}
401')
402/* }}} */
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