source: branches/1.0/processor/head.m4 @ 180

Last change on this file since 180 was 180, checked in by moo, 8 years ago

merged [178]

File size: 8.8 KB
Line 
1dnl {{{ === program start ========================================
2divert(0)
3#include <string.h>
4#include <stdio.h>
5
6#include "php.h"
7#include "zend_compile.h"
8#include "zend_API.h"
9#include "zend_ini.h"
10
11#include "xcache.h"
12#include "align.h"
13#include "const_string.h"
14#include "processor.h"
15#include "stack.h"
16#include "xcache_globals.h"
17
18#if defined(HARDENING_PATCH_HASH_PROTECT) && HARDENING_PATCH_HASH_PROTECT
19extern unsigned int zend_hash_canary;
20#endif
21
22define(`SIZEOF_zend_uint', `sizeof(zend_uint)')
23define(`COUNTOF_zend_uint', `1')
24define(`SIZEOF_int', `sizeof(int)')
25define(`COUNTOF_int', `1')
26define(`SIZEOF_zend_function', `sizeof(zend_function)')
27define(`COUNTOF_zend_function', `1')
28define(`SIZEOF_zval_ptr', `sizeof(zval_ptr)')
29define(`COUNTOF_zval_ptr', `1')
30define(`SIZEOF_xc_entry_name_t', `sizeof(xc_entry_name_t)')
31define(`COUNTOF_xc_entry_name_t', `1')
32
33ifdef(`XCACHE_ENABLE_TEST', `
34#undef NDEBUG
35#include <assert.h>
36m4_errprint(`AUTOCHECK INFO: runtime autocheck Enabled (debug build)')
37', `
38m4_errprint(`AUTOCHECK INFO: runtime autocheck Disabled (optimized build)')
39')
40sinclude(builddir`/structinfo.m4')
41
42#ifndef NDEBUG
43#   undef inline
44#define inline
45#endif
46
47typedef zval *zval_ptr;
48typedef zend_uchar zval_data_type;
49
50#define MAX_DUP_STR_LEN 256
51dnl }}}
52/* export: typedef struct _xc_processor_t xc_processor_t; :export {{{ */
53struct _xc_processor_t {
54    char *p;
55    zend_uint size;
56    HashTable strings;
57    HashTable zvalptrs;
58    zend_bool reference; /* enable if to deal with reference */
59    const xc_entry_t *xce_src;
60    const xc_entry_t *xce_dst;
61    const zend_class_entry *cache_ce;
62    zend_uint cache_class_num;
63
64    const zend_op          *active_opcodes_src;
65    zend_op                *active_opcodes_dst;
66    const zend_class_entry *active_class_entry_src;
67    zend_class_entry       *active_class_entry_dst;
68    zend_uint               active_class_num;
69
70    zend_bool readonly_protection; /* wheather it's present */
71IFASSERT(xc_stack_t allocsizes;)
72};
73/* }}} */
74#ifdef XCACHE_HAVE_DPRINT
75static void xc_dprint_indent(int indent) /* {{{ */
76{
77    int i;
78    for (i = 0; i < indent; i ++) {
79        fprintf(stderr, "  ");
80    }
81}
82#endif
83/* }}} */
84/* {{{ xc_calc_string_n */
85REDEF(`KIND', `calc')
86static inline void xc_calc_string_n(xc_processor_t *processor, zend_uchar type, char *str, long size IFASSERT(`, int relayline')) {
87    pushdef(`__LINE__', `relayline')
88    int realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
89
90    if (realsize > MAX_DUP_STR_LEN) {
91        ALLOC(, char, realsize)
92    }
93    else if (zend_u_hash_add(&processor->strings, type, str, size, (void*)&str, sizeof(char*), NULL) == SUCCESS) {
94        /* new string */
95        ALLOC(, char, realsize)
96    }
97    IFASSERT(`
98        else {
99            dnl fprintf(stderr, "dupstr %s\n", str);
100        }
101    ')
102    popdef(`__LINE__')
103}
104/* }}} */
105/* {{{ xc_store_string_n */
106REDEF(`KIND', `store')
107static inline char *xc_store_string_n(xc_processor_t *processor, zend_uchar type, char *str, long size IFASSERT(`, int relayline')) {
108    pushdef(`__LINE__', `relayline')
109    int realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
110    char *s;
111
112    if (realsize > MAX_DUP_STR_LEN) {
113        ALLOC(s, char, realsize)
114        memcpy(s, str, realsize);
115    }
116    else if (zend_u_hash_find(&processor->strings, type, str, size, (void*)&s) != SUCCESS) {
117        /* new string */
118        ALLOC(s, char, realsize)
119        memcpy(s, str, realsize);
120        zend_u_hash_add(&processor->strings, type, str, size, (void*)&s, sizeof(char*), NULL);
121    }
122    else {
123        s = *(char**)s;
124    }
125    return s;
126    popdef(`__LINE__')
127}
128/* }}} */
129/* {{{ xc_get_class_num
130 * return class_index + 1
131 */
132static zend_uint xc_get_class_num(xc_processor_t *processor, zend_class_entry *ce) {
133    zend_uint i;
134    const xc_entry_t *xce = processor->xce_src;
135    zend_class_entry *ceptr;
136
137    if (processor->cache_ce == ce) {
138        return processor->cache_class_num;
139    }
140    for (i = 0; i < xce->data.php->classinfo_cnt; i ++) {
141        ceptr = CestToCePtr(xce->data.php->classinfos[i].cest);
142        if (ZCEP_REFCOUNT_PTR(ceptr) == ZCEP_REFCOUNT_PTR(ce)) {
143            processor->cache_ce = ceptr;
144            processor->cache_class_num = i + 1;
145            return i + 1;
146        }
147    }
148    assert(0);
149    return (zend_uint) -1;
150}
151/* }}} */
152/* {{{ xc_get_class */
153#ifdef ZEND_ENGINE_2
154static zend_class_entry *xc_get_class(xc_processor_t *processor, zend_uint class_num) {
155    /* must be parent or currrent class */
156    assert(class_num <= processor->active_class_num);
157    return CestToCePtr(processor->xce_dst->data.php->classinfos[class_num - 1].cest);
158}
159#endif
160/* }}} */
161#ifdef ZEND_ENGINE_2
162/* fix method on store */
163static void xc_fix_method(xc_processor_t *processor, zend_op_array *dst) /* {{{ */
164{
165    zend_function *zf = (zend_function *) dst;
166    zend_class_entry *ce = processor->active_class_entry_dst;
167
168    /* Fixing up the default functions for objects here since
169     * we need to compare with the newly allocated functions
170     *
171     * caveat: a sub-class method can have the same name as the
172     * parent~s constructor and create problems.
173     */
174
175    if (zf->common.fn_flags & ZEND_ACC_CTOR) {
176        if (!ce->constructor) {
177            ce->constructor = zf;
178        }
179    }
180    else if (zf->common.fn_flags & ZEND_ACC_DTOR) {
181        ce->destructor = zf;
182    }
183    else if (zf->common.fn_flags & ZEND_ACC_CLONE) {
184        ce->clone = zf;
185    }
186    else {
187#define SET_IF_SAME_NAME(member) \
188        do { \
189            if(!strcasecmp(zf->common.function_name, #member)) { \
190                ce->member = zf; \
191            } \
192        } \
193        while(0)
194        /* if(ce->member && !strcmp(zf->common.function_name, ce->member->common.function_name)) { \ */
195
196        SET_IF_SAME_NAME(__get);
197        SET_IF_SAME_NAME(__set);
198#ifdef ZEND_ENGINE_2_1
199        SET_IF_SAME_NAME(__unset);
200        SET_IF_SAME_NAME(__isset);
201#endif
202        SET_IF_SAME_NAME(__call);
203#if defined(ZEND_ENGINE_2_2) || PHP_MAJOR_VERSION >= 6
204        SET_IF_SAME_NAME(__tostring);
205#endif
206
207#undef SET_IF_SAME_NAME
208    }
209}
210/* }}} */
211#endif
212dnl ================ export API
213/* export: xc_entry_t *xc_processor_store_xc_entry_t(xc_entry_t *src TSRMLS_DC); :export {{{ */
214xc_entry_t *xc_processor_store_xc_entry_t(xc_entry_t *src TSRMLS_DC) {
215    xc_entry_t *dst;
216    xc_processor_t processor;
217
218    memset(&processor, 0, sizeof(processor));
219    if (src->type == XC_TYPE_VAR) {
220        processor.reference = 1;
221    }
222
223    IFASSERT(`xc_stack_init(&processor.allocsizes);')
224
225    /* calc size */ {
226        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
227        if (processor.reference) {
228            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
229        }
230
231        processor.size = 0;
232        /* allocate */
233        processor.size = ALIGN(processor.size + sizeof(src[0]));
234
235        xc_calc_xc_entry_t(&processor, src TSRMLS_CC);
236        if (processor.reference) {
237            zend_hash_destroy(&processor.zvalptrs);
238        }
239        zend_hash_destroy(&processor.strings);
240    }
241    src->size = processor.size;
242
243    IFASSERT(`xc_stack_reverse(&processor.allocsizes);')
244    /* store {{{ */
245    {
246        IFASSERT(`char *oldp;')
247        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
248        if (processor.reference) {
249            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
250        }
251
252        /* mem :) */
253        processor.p = (char *)xc_mem_malloc(src->cache->mem, processor.size);
254        if (processor.p == NULL) {
255            dst = NULL;
256            goto err_alloc;
257            return NULL;
258        }
259        IFASSERT(`oldp = processor.p;')
260        assert(processor.p == (char *) ALIGN(processor.p));
261
262        /* allocate */
263        dst = (xc_entry_t *) processor.p;
264        processor.p = (char *) ALIGN(processor.p + sizeof(dst[0]));
265
266        xc_store_xc_entry_t(&processor, dst, src TSRMLS_CC);
267        IFASSERT(` {
268            int real = processor.p - oldp;
269            int should = processor.size;
270            if (real != processor.size) {
271                fprintf(stderr, "real %d - should %d = %d\n", real, should, real - should);
272                abort();
273            }
274        }')
275err_alloc:
276        if (processor.reference) {
277            zend_hash_destroy(&processor.zvalptrs);
278        }
279        zend_hash_destroy(&processor.strings);
280    }
281    /* }}} */
282
283    IFASSERT(`xc_stack_destroy(&processor.allocsizes);')
284
285    return dst;
286}
287/* }}} */
288/* export: xc_entry_t *xc_processor_restore_xc_entry_t(xc_entry_t *dst, const xc_entry_t *src, zend_bool readonly_protection TSRMLS_DC); :export {{{ */
289xc_entry_t *xc_processor_restore_xc_entry_t(xc_entry_t *dst, const xc_entry_t *src, zend_bool readonly_protection TSRMLS_DC) {
290    xc_processor_t processor;
291
292    memset(&processor, 0, sizeof(processor));
293    processor.readonly_protection = readonly_protection;
294
295    xc_restore_xc_entry_t(&processor, dst, src TSRMLS_CC);
296    return dst;
297}
298/* }}} */
299/* export: zval *xc_processor_restore_zval(zval *dst, const zval *src TSRMLS_DC); :export {{{ */
300zval *xc_processor_restore_zval(zval *dst, const zval *src TSRMLS_DC) {
301    xc_processor_t processor;
302
303    memset(&processor, 0, sizeof(processor));
304    processor.reference = 1;
305
306    zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
307    dnl fprintf(stderr, "mark[%p] = %p\n", src, dst);
308    zend_hash_add(&processor.zvalptrs, (char *)src, sizeof(src), (void*)&dst, sizeof(dst), NULL);
309    xc_restore_zval(&processor, dst, src TSRMLS_CC);
310    zend_hash_destroy(&processor.zvalptrs);
311
312    return dst;
313}
314/* }}} */
315/* export: void xc_dprint(xc_entry_t *src, int indent TSRMLS_DC); :export {{{ */
316#ifdef XCACHE_HAVE_DPRINT
317void xc_dprint(xc_entry_t *src, int indent TSRMLS_DC) {
318    IFDPRINT(`INDENT()`'fprintf(stderr, "xc_entry_t:src");')
319    xc_dprint_xc_entry_t(src, indent TSRMLS_CC);
320}
321#endif
322/* }}} */
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