source: trunk/processor/head.m4 @ 393

Last change on this file since 393 was 393, checked in by moo, 7 years ago

set svn:eol-style

  • Property svn:eol-style set to native
File size: 11.3 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
12#include "xcache.h"
13#include "align.h"
14#include "const_string.h"
15#include "processor.h"
16#include "stack.h"
17#include "xcache_globals.h"
18
19#if defined(HARDENING_PATCH_HASH_PROTECT) && HARDENING_PATCH_HASH_PROTECT
20extern unsigned int zend_hash_canary;
21#endif
22
23define(`SIZEOF_zend_uint', `sizeof(zend_uint)')
24define(`COUNTOF_zend_uint', `1')
25define(`SIZEOF_int', `sizeof(int)')
26define(`COUNTOF_int', `1')
27define(`SIZEOF_zend_function', `sizeof(zend_function)')
28define(`COUNTOF_zend_function', `1')
29define(`SIZEOF_zval_ptr', `sizeof(zval_ptr)')
30define(`COUNTOF_zval_ptr', `1')
31define(`SIZEOF_xc_entry_name_t', `sizeof(xc_entry_name_t)')
32define(`COUNTOF_xc_entry_name_t', `1')
33
34ifdef(`XCACHE_ENABLE_TEST', `
35#undef NDEBUG
36#include <assert.h>
37m4_errprint(`AUTOCHECK INFO: runtime autocheck Enabled (debug build)')
38', `
39m4_errprint(`AUTOCHECK INFO: runtime autocheck Disabled (optimized build)')
40')
41ifdef(`DEBUG_SIZE', `static int xc_totalsize = 0;')
42
43sinclude(builddir`/structinfo.m4')
44
45#ifndef NDEBUG
46#   undef inline
47#define inline
48#endif
49
50typedef zval *zval_ptr;
51typedef zend_uchar zval_data_type;
52#ifdef IS_UNICODE
53typedef UChar zstr_uchar;
54#endif
55typedef char  zstr_char;
56
57#define MAX_DUP_STR_LEN 256
58dnl }}}
59/* export: typedef struct _xc_processor_t xc_processor_t; :export {{{ */
60struct _xc_processor_t {
61    char *p;
62    zend_uint size;
63    HashTable strings;
64    HashTable zvalptrs;
65    zend_bool reference; /* enable if to deal with reference */
66    zend_bool have_references;
67    const xc_entry_data_php_t *php_src;
68    const xc_entry_data_php_t *php_dst;
69    const xc_cache_t          *cache;
70    const zend_class_entry *cache_ce;
71    zend_uint cache_class_num;
72
73    const zend_op          *active_opcodes_src;
74    zend_op                *active_opcodes_dst;
75    const zend_class_entry *active_class_entry_src;
76    zend_class_entry       *active_class_entry_dst;
77    zend_uint               active_class_num;
78
79    zend_bool readonly_protection; /* wheather it's present */
80IFASSERT(xc_stack_t allocsizes;)
81};
82/* }}} */
83#ifdef HAVE_XCACHE_DPRINT
84static void xc_dprint_indent(int indent) /* {{{ */
85{
86    int i;
87    for (i = 0; i < indent; i ++) {
88        fprintf(stderr, "  ");
89    }
90}
91/* }}} */
92static void xc_dprint_str_len(const char *str, int len) /* {{{ */
93{
94    const unsigned char *p = (const unsigned char *) str;
95    int i;
96    for (i = 0; i < len; i ++) {
97        if (p[i] < 32 || p[i] == 127) {
98            fprintf(stderr, "\\%03o", (unsigned int) p[i]);
99        }
100        else {
101            fputc(p[i], stderr);
102        }
103    }
104}
105/* }}} */
106#endif
107/* {{{ xc_zstrlen_char */
108static inline int xc_zstrlen_char(zstr s)
109{
110    return strlen(ZSTR_S(s));
111}
112/* }}} */
113#ifdef IS_UNICODE
114/* {{{ xc_zstrlen_uchar */
115static inline int xc_zstrlen_uchar(zstr s)
116{
117    int i;
118    UChar *p = ZSTR_U(s);
119    for (i = 0; *p; i ++, p++) {
120        /* empty */
121    }
122    return i;
123}
124/* }}} */
125/* {{{ xc_zstrlen */
126static inline int xc_zstrlen(int type, zstr s)
127{
128    return type == IS_UNICODE ? xc_zstrlen_uchar(s) : xc_zstrlen_char(s);
129}
130/* }}} */
131#else
132/* {{{ xc_zstrlen */
133#define xc_zstrlen(dummy, s) xc_zstrlen_char(s)
134/* }}} */
135#endif
136/* {{{ xc_calc_string_n */
137REDEF(`KIND', `calc')
138static inline void xc_calc_string_n(xc_processor_t *processor, zend_uchar type, zstr str, long size IFASSERT(`, int relayline')) {
139    pushdef(`__LINE__', `relayline')
140    int realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
141    long dummy = 1;
142
143    if (realsize > MAX_DUP_STR_LEN) {
144        ALLOC(, char, realsize)
145    }
146    else if (zend_u_hash_add(&processor->strings, type, str, size, (void *) &dummy, sizeof(dummy), NULL) == SUCCESS) {
147        /* new string */
148        ALLOC(, char, realsize)
149    }
150    IFASSERT(`
151        else {
152            dnl fprintf(stderr, "dupstr %s\n", ZSTR_S(str));
153        }
154    ')
155    popdef(`__LINE__')
156}
157/* }}} */
158/* {{{ xc_store_string_n */
159REDEF(`KIND', `store')
160static inline zstr xc_store_string_n(xc_processor_t *processor, zend_uchar type, zstr str, long size IFASSERT(`, int relayline')) {
161    pushdef(`__LINE__', `relayline')
162    int realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
163    zstr ret, *pret;
164
165    if (realsize > MAX_DUP_STR_LEN) {
166        ALLOC(ZSTR_V(ret), char, realsize)
167        memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
168        return ret;
169    }
170
171    if (zend_u_hash_find(&processor->strings, type, str, size, (void **) &pret) == SUCCESS) {
172        return *pret;
173    }
174
175    /* new string */
176    ALLOC(ZSTR_V(ret), char, realsize)
177    memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
178    zend_u_hash_add(&processor->strings, type, str, size, (void *) &ret, sizeof(zstr), NULL);
179    return ret;
180
181    popdef(`__LINE__')
182}
183/* }}} */
184/* {{{ xc_get_class_num
185 * return class_index + 1
186 */
187static zend_ulong xc_get_class_num(xc_processor_t *processor, zend_class_entry *ce) {
188    zend_ulong i;
189    const xc_entry_data_php_t *php = processor->php_src;
190    zend_class_entry *ceptr;
191
192    if (processor->cache_ce == ce) {
193        return processor->cache_class_num;
194    }
195    for (i = 0; i < php->classinfo_cnt; i ++) {
196        ceptr = CestToCePtr(php->classinfos[i].cest);
197        if (ZCEP_REFCOUNT_PTR(ceptr) == ZCEP_REFCOUNT_PTR(ce)) {
198            processor->cache_ce = ceptr;
199            processor->cache_class_num = i + 1;
200            return i + 1;
201        }
202    }
203    assert(0);
204    return (zend_ulong) -1;
205}
206/* }}} */
207/* {{{ xc_get_class */
208#ifdef ZEND_ENGINE_2
209static zend_class_entry *xc_get_class(xc_processor_t *processor, zend_ulong class_num) {
210    /* must be parent or currrent class */
211    assert(class_num <= processor->active_class_num);
212    return CestToCePtr(processor->php_dst->classinfos[class_num - 1].cest);
213}
214#endif
215/* }}} */
216#ifdef ZEND_ENGINE_2
217/* fix method on store */
218static void xc_fix_method(xc_processor_t *processor, zend_op_array *dst) /* {{{ */
219{
220    zend_function *zf = (zend_function *) dst;
221    zend_class_entry *ce = processor->active_class_entry_dst;
222
223    /* Fixing up the default functions for objects here since
224     * we need to compare with the newly allocated functions
225     *
226     * caveat: a sub-class method can have the same name as the
227     * parent~s constructor and create problems.
228     */
229
230    if (zf->common.fn_flags & ZEND_ACC_CTOR) {
231        if (!ce->constructor) {
232            ce->constructor = zf;
233        }
234    }
235    else if (zf->common.fn_flags & ZEND_ACC_DTOR) {
236        ce->destructor = zf;
237    }
238    else if (zf->common.fn_flags & ZEND_ACC_CLONE) {
239        ce->clone = zf;
240    }
241    else {
242dnl FIXME: handle common.function_name here
243#define SET_IF_SAME_NAME(member) \
244        do { \
245            if (!strcasecmp(ZSTR_S(zf->common.function_name), #member)) { \
246                ce->member = zf; \
247            } \
248        } \
249        while(0)
250        /* if(ce->member && !strcmp(zf->common.function_name, ce->member->common.function_name)) { \ */
251
252        SET_IF_SAME_NAME(__get);
253        SET_IF_SAME_NAME(__set);
254#ifdef ZEND_ENGINE_2_1
255        SET_IF_SAME_NAME(__unset);
256        SET_IF_SAME_NAME(__isset);
257#endif
258        SET_IF_SAME_NAME(__call);
259#if defined(ZEND_ENGINE_2_2) || PHP_MAJOR_VERSION >= 6
260        SET_IF_SAME_NAME(__tostring);
261#endif
262
263#undef SET_IF_SAME_NAME
264    }
265}
266/* }}} */
267#endif
268/* {{{ call op_array ctor handler */
269extern zend_bool xc_have_op_array_ctor;
270static void xc_zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
271{
272    if (extension->op_array_ctor) {
273        extension->op_array_ctor(op_array);
274    }
275}
276/* }}} */
277dnl ================ export API
278define(`DEFINE_STORE_API', `
279/* export: $1 *xc_processor_store_$1($1 *src TSRMLS_DC); :export {{{ */
280$1 *xc_processor_store_$1($1 *src TSRMLS_DC) {
281    $1 *dst;
282    xc_processor_t processor;
283
284    memset(&processor, 0, sizeof(processor));
285    processor.reference = 1;
286    processor.cache = src->cache;
287
288    IFASSERT(`xc_stack_init(&processor.allocsizes);')
289
290    /* calc size */ {
291        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
292        if (processor.reference) {
293            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
294        }
295
296        processor.size = 0;
297        /* allocate */
298        processor.size = ALIGN(processor.size + sizeof(src[0]));
299
300        xc_calc_$1(&processor, src TSRMLS_CC);
301        if (processor.reference) {
302            zend_hash_destroy(&processor.zvalptrs);
303        }
304        zend_hash_destroy(&processor.strings);
305    }
306    src->size = processor.size;
307    ifelse(`$1', `xc_entry_t', `
308        src->data.var->have_references = processor.have_references;
309    ', `
310        src->have_references = processor.have_references;
311    ')
312
313    IFASSERT(`xc_stack_reverse(&processor.allocsizes);')
314    /* store {{{ */
315    {
316        IFASSERT(`char *oldp;')
317        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
318        if (processor.reference) {
319            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
320        }
321
322        /* mem :) */
323        processor.p = (char *) processor.cache->mem->handlers->malloc(processor.cache->mem, processor.size);
324        if (processor.p == NULL) {
325            dst = NULL;
326            goto err_alloc;
327        }
328        IFASSERT(`oldp = processor.p;')
329        assert(processor.p == (char *) ALIGN(processor.p));
330
331        /* allocate */
332        dst = ($1 *) processor.p;
333        processor.p = (char *) ALIGN(processor.p + sizeof(dst[0]));
334
335        xc_store_$1(&processor, dst, src TSRMLS_CC);
336        IFASSERT(` {
337            int real = processor.p - oldp;
338            int should = processor.size;
339            if (real != processor.size) {
340                fprintf(stderr, "real %d - should %d = %d\n", real, should, real - should);
341                abort();
342            }
343        }')
344err_alloc:
345        if (processor.reference) {
346            zend_hash_destroy(&processor.zvalptrs);
347        }
348        zend_hash_destroy(&processor.strings);
349    }
350    /* }}} */
351
352    IFASSERT(`xc_stack_destroy(&processor.allocsizes);')
353
354    return dst;
355}
356/* }}} */
357')
358DEFINE_STORE_API(`xc_entry_t')
359DEFINE_STORE_API(`xc_entry_data_php_t')
360/* export: xc_entry_t *xc_processor_restore_xc_entry_t(xc_entry_t *dst, const xc_entry_t *src TSRMLS_DC); :export {{{ */
361xc_entry_t *xc_processor_restore_xc_entry_t(xc_entry_t *dst, const xc_entry_t *src TSRMLS_DC) {
362    xc_processor_t processor;
363
364    memset(&processor, 0, sizeof(processor));
365    xc_restore_xc_entry_t(&processor, dst, src TSRMLS_CC);
366
367    return dst;
368}
369/* }}} */
370/* export: xc_entry_data_php_t *xc_processor_restore_xc_entry_data_php_t(xc_entry_data_php_t *dst, const xc_entry_data_php_t *src, zend_bool readonly_protection TSRMLS_DC); :export {{{ */
371xc_entry_data_php_t *xc_processor_restore_xc_entry_data_php_t(xc_entry_data_php_t *dst, const xc_entry_data_php_t *src, zend_bool readonly_protection TSRMLS_DC) {
372    xc_processor_t processor;
373
374    memset(&processor, 0, sizeof(processor));
375    processor.readonly_protection = readonly_protection;
376    /* this function is used for php data only */
377    if (src->have_references) {
378        processor.reference = 1;
379    }
380
381    if (processor.reference) {
382        zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
383    }
384    xc_restore_xc_entry_data_php_t(&processor, dst, src TSRMLS_CC);
385    if (processor.reference) {
386        zend_hash_destroy(&processor.zvalptrs);
387    }
388    return dst;
389}
390/* }}} */
391/* export: zval *xc_processor_restore_zval(zval *dst, const zval *src, zend_bool have_references TSRMLS_DC); :export {{{ */
392zval *xc_processor_restore_zval(zval *dst, const zval *src, zend_bool have_references TSRMLS_DC) {
393    xc_processor_t processor;
394
395    memset(&processor, 0, sizeof(processor));
396    processor.reference = have_references;
397
398    if (processor.reference) {
399        zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
400        dnl fprintf(stderr, "mark[%p] = %p\n", src, dst);
401        zend_hash_add(&processor.zvalptrs, (char *)src, sizeof(src), (void*)&dst, sizeof(dst), NULL);
402    }
403    xc_restore_zval(&processor, dst, src TSRMLS_CC);
404    if (processor.reference) {
405        zend_hash_destroy(&processor.zvalptrs);
406    }
407
408    return dst;
409}
410/* }}} */
411/* export: void xc_dprint(xc_entry_t *src, int indent TSRMLS_DC); :export {{{ */
412#ifdef HAVE_XCACHE_DPRINT
413void xc_dprint(xc_entry_t *src, int indent TSRMLS_DC) {
414    IFDPRINT(`INDENT()`'fprintf(stderr, "xc_entry_t:src");')
415    xc_dprint_xc_entry_t(src, indent TSRMLS_CC);
416}
417#endif
418/* }}} */
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