2 * aot.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifndef PLATFORM_WIN32
27 #include <limits.h> /* for PAGESIZE */
32 #include <mono/metadata/tabledefs.h>
33 #include <mono/metadata/class.h>
34 #include <mono/metadata/object.h>
35 #include <mono/metadata/tokentype.h>
36 #include <mono/metadata/appdomain.h>
37 #include <mono/metadata/debug-helpers.h>
38 #include <mono/metadata/assembly.h>
39 #include <mono/metadata/metadata-internals.h>
40 #include <mono/metadata/marshal.h>
41 #include <mono/metadata/gc-internal.h>
42 #include <mono/utils/mono-logger.h>
43 #include "mono/utils/mono-compiler.h"
50 #define SHARED_EXT ".dll"
51 #elif defined(__ppc__) && defined(__MACH__)
52 #define SHARED_EXT ".dylib"
54 #define SHARED_EXT ".so"
57 #if defined(sparc) || defined(__ppc__)
58 #define AS_STRING_DIRECTIVE ".asciz"
61 #define AS_STRING_DIRECTIVE ".string"
64 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
65 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
67 typedef struct MonoAotOptions {
70 gboolean write_symbols;
71 gboolean metadata_only;
74 typedef struct MonoAotStats {
75 int ccount, mcount, lmfcount, abscount, wrappercount, gcount, ocount, genericcount;
76 int code_size, info_size, ex_info_size, got_size, class_info_size, got_info_size, got_info_offsets_size;
77 int methods_without_got_slots, direct_calls, all_calls;
79 int got_slot_types [MONO_PATCH_INFO_NONE];
82 /*#define USE_ELF_WRITER 1*/
84 #if defined(USE_ELF_WRITER)
85 #define USE_BIN_WRITER 1
90 typedef struct _BinSymbol BinSymbol;
91 typedef struct _BinReloc BinReloc;
92 typedef struct _BinSection BinSection;
106 typedef struct MonoAotCompile {
109 GHashTable *patch_to_plt_offset;
110 GHashTable **patch_to_plt_offset_wrapper;
111 GHashTable *plt_offset_to_patch;
112 GHashTable *patch_to_shared_got_offset;
113 GPtrArray *shared_patches;
114 GHashTable *image_hash;
115 GHashTable *method_to_cfg;
116 GHashTable *token_info_hash;
117 GPtrArray *image_table;
119 guint32 got_offset, plt_offset;
120 guint32 *method_got_offsets;
121 gboolean *has_got_slots;
122 MonoAotOptions aot_opts;
125 MonoMemPool *mempool;
127 #ifdef USE_BIN_WRITER
129 BinSection *sections;
130 BinSection *cur_section;
131 BinReloc *relocations;
137 int mode; /* emit mode */
138 int col_count; /* bytes emitted per .byte line */
142 #ifdef HAVE_ARRAY_ELEM_INIT
143 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
144 #define MSGSTRFIELD1(line) str##line
145 static const struct msgstr_t {
146 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
147 #include "patch-info.h"
150 #define PATCH_INFO(a,b) b,
151 #include "patch-info.h"
154 static const gint16 opidx [] = {
155 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
156 #include "patch-info.h"
161 get_patch_name (int info)
163 return (const char*)&opstr + opidx [info];
167 #define PATCH_INFO(a,b) b,
168 static const char* const
169 patch_types [MONO_PATCH_INFO_NUM + 1] = {
170 #include "patch-info.h"
175 get_patch_name (int info)
177 return patch_types [info];
183 is_got_patch (MonoJumpInfoType patch_type)
187 #elif defined(__i386__)
194 #if defined(__ppc__) && defined(__MACH__)
196 ilog2(register int value)
199 while (value & ~0xf) count += 4, value >>= 4;
200 while (value) count++, value >>= 1;
205 #ifdef USE_BIN_WRITER
207 typedef struct _BinLabel BinLabel;
218 BinSection *val2_section;
230 gboolean is_function;
248 emit_start (MonoAotCompile *acfg)
250 acfg->labels = g_hash_table_new (g_str_hash, g_str_equal);
254 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
258 if (acfg->cur_section && acfg->cur_section->subsection == subsection_index
259 && strcmp (acfg->cur_section->name, section_name) == 0)
261 for (section = acfg->sections; section; section = section->next) {
262 if (section->subsection == subsection_index && strcmp (section->name, section_name) == 0) {
263 acfg->cur_section = section;
268 section = g_new0 (BinSection, 1);
269 section->name = g_strdup (section_name);
270 section->subsection = subsection_index;
271 section->next = acfg->sections;
272 acfg->sections = section;
273 acfg->cur_section = section;
278 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
280 BinSymbol *symbol = g_new0 (BinSymbol, 1);
281 symbol->name = g_strdup (name);
282 symbol->is_function = func;
283 symbol->is_global = TRUE;
284 symbol->section = acfg->cur_section;
285 /* FIXME: we align after this call... */
286 symbol->offset = symbol->section->cur_offset;
287 symbol->next = acfg->symbols;
288 acfg->symbols = symbol;
292 emit_label (MonoAotCompile *acfg, const char *name)
294 BinLabel *label = g_new0 (BinLabel, 1);
295 label->name = g_strdup (name);
296 label->section = acfg->cur_section;
297 label->offset = acfg->cur_section->cur_offset;
298 g_hash_table_insert (acfg->labels, label->name, label);
302 emit_ensure_buffer (BinSection *section, int size)
304 int new_offset = section->cur_offset + size;
305 if (new_offset >= section->data_len) {
306 int new_size = section->data_len? section->data_len * 2: 256;
308 while (new_size <= new_offset)
310 data = g_malloc0 (new_size);
311 memcpy (data, section->data, section->data_len);
312 g_free (section->data);
313 section->data = data;
314 section->data_len = new_size;
319 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
321 emit_ensure_buffer (acfg->cur_section, size);
322 memcpy (acfg->cur_section->data + acfg->cur_section->cur_offset, buf, size);
323 acfg->cur_section->cur_offset += size;
327 emit_string (MonoAotCompile *acfg, const char *value)
329 int size = strlen (value) + 1;
330 emit_bytes (acfg, (const guint8*)value, size);
334 emit_line (MonoAotCompile *acfg)
336 /* Nothing to do in binary writer */
340 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
342 emit_section_change (acfg, ".text", 1);
343 emit_global (acfg, name, FALSE);
344 emit_label (acfg, name);
345 emit_string (acfg, value);
349 emit_alignment (MonoAotCompile *acfg, int size)
351 int offset = acfg->cur_section->cur_offset;
353 offset += (size - 1);
354 offset &= ~(size - 1);
355 add = offset - acfg->cur_section->cur_offset;
357 emit_ensure_buffer (acfg->cur_section, add);
358 acfg->cur_section->cur_offset += add;
363 emit_pointer (MonoAotCompile *acfg, const char *target)
366 emit_alignment (acfg, sizeof (gpointer));
367 reloc = g_new0 (BinReloc, 1);
368 reloc->val1 = g_strdup (target);
369 reloc->section = acfg->cur_section;
370 reloc->section_offset = acfg->cur_section->cur_offset;
371 reloc->next = acfg->relocations;
372 acfg->relocations = reloc;
373 if (strcmp (reloc->section->name, ".data") == 0) {
375 g_print ("reloc: %s at %d\n", target, acfg->cur_section->cur_offset);
377 acfg->cur_section->cur_offset += sizeof (gpointer);
381 emit_int16 (MonoAotCompile *acfg, int value)
384 emit_ensure_buffer (acfg->cur_section, 2);
385 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
386 acfg->cur_section->cur_offset += 2;
387 /* FIXME: little endian */
389 data [1] = value >> 8;
393 emit_int32 (MonoAotCompile *acfg, int value)
396 emit_ensure_buffer (acfg->cur_section, 4);
397 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
398 acfg->cur_section->cur_offset += 4;
399 /* FIXME: little endian */
401 data [1] = value >> 8;
402 data [2] = value >> 16;
403 data [3] = value >> 24;
407 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
410 reloc = g_new0 (BinReloc, 1);
411 reloc->val1 = g_strdup (end);
412 if (strcmp (start, ".") == 0) {
413 reloc->val2_section = acfg->cur_section;
414 reloc->val2_offset = acfg->cur_section->cur_offset;
416 reloc->val2 = g_strdup (start);
418 reloc->offset = offset;
419 reloc->section = acfg->cur_section;
420 reloc->section_offset = acfg->cur_section->cur_offset;
421 reloc->next = acfg->relocations;
422 acfg->relocations = reloc;
423 acfg->cur_section->cur_offset += 4;
424 /*if (strcmp (reloc->section->name, ".data") == 0) {
426 g_print ("reloc: %s - %s + %d at %d\n", end, start, offset, acfg->cur_section->cur_offset - 4);
431 emit_zero_bytes (MonoAotCompile *acfg, int num)
433 emit_ensure_buffer (acfg->cur_section, num);
434 acfg->cur_section->cur_offset += num;
437 #ifdef USE_ELF_WRITER
472 DYN_RELCOUNT = 0x6ffffffa
475 static const char* section_names [] = {
491 static const guint8 section_type [] = {
496 static const guint8 section_link [] = {
497 0, 2, 3, 0, 2, 0, 3, 0, 0, 0, 0, 12, 0
500 static const guint8 section_esize [] = {
501 0, 4, 16, 0, 8, 0, 8, 4, 0, 0, 0, 16, 0
504 static const guint8 section_flags [] = {
505 0, 2, 2, 2, 2, 6, 3, 3, 3, 3, 0, 0, 0
508 static const guint16 section_align [] = {
509 0, 4, 4, 1, 4, 4096, 4, 4, 8, 8, 1, 4, 1
529 struct ElfSectHeader {
542 #if SIZEOF_VOID_P == 4
544 struct ElfProgHeader {
576 struct ElfProgHeader {
620 str_table_add (ElfStrTable *table, const char* value)
624 table->data = g_string_new_len ("", 1);
625 table->hash = g_hash_table_new (g_str_hash, g_str_equal);
627 idx = GPOINTER_TO_UINT (g_hash_table_lookup (table->hash, value));
630 idx = table->data->len;
631 g_string_append (table->data, value);
632 g_string_append_c (table->data, 0);
633 g_hash_table_insert (table->hash, (void*)value, GUINT_TO_POINTER (idx));
638 append_subsection (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection *sect, BinSection *add)
640 int offset = sect->cur_offset;
641 /*offset += (sheaders [sect->shidx].sh_addralign - 1);
642 offset &= ~(sheaders [sect->shidx].sh_addralign - 1);*/
645 emit_ensure_buffer (sect, offset);
646 g_print ("section %s aligned to %d from %d\n", sect->name, offset, sect->cur_offset);
647 sect->cur_offset = offset;
649 emit_ensure_buffer (sect, add->cur_offset);
650 memcpy (sect->data + sect->cur_offset, add->data, add->cur_offset);
652 sect->cur_offset += add->cur_offset;
653 add->cur_offset = offset; /* it becomes the offset in the parent section */
654 g_print ("subsection %d of %s added at offset %d (align: %d)\n", add->subsection, sect->name, add->cur_offset, sheaders [sect->shidx].sh_addralign);
659 /* merge the subsections */
661 collect_sections (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection **out, int num)
663 int i, j, maxs, num_sections;
668 for (sect = acfg->sections; sect; sect = sect->next) {
669 if (sect->subsection == 0) {
670 out [num_sections++] = sect;
671 g_assert (num_sections < num);
672 if (strcmp (sect->name, ".text") == 0) {
673 sect->shidx = SECT_TEXT;
674 } else if (strcmp (sect->name, ".data") == 0) {
675 sect->shidx = SECT_DATA;
676 } else if (strcmp (sect->name, ".bss") == 0) {
677 sect->shidx = SECT_BSS;
680 maxs = MAX (maxs, sect->subsection);
682 for (i = 0; i < num_sections; i++) {
683 for (j = 1; j <= maxs; ++j) {
684 for (sect = acfg->sections; sect; sect = sect->next) {
685 if (sect->subsection == j && strcmp (out [i]->name, sect->name) == 0) {
686 append_subsection (acfg, sheaders, out [i], sect);
695 elf_hash (const unsigned char *name)
697 unsigned long h = 0, g;
699 h = (h << 4) + *name++;
700 if ((g = h & 0xf0000000))
707 #define NUM_BUCKETS 17
710 build_hash (MonoAotCompile *acfg, int num_sections, ElfStrTable *dynstr)
713 int num_symbols = 1 + num_sections + 3;
716 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
717 if (!symbol->is_global)
720 str_table_add (dynstr, symbol->name);
721 /*g_print ("adding sym: %s\n", symbol->name);*/
723 str_table_add (dynstr, "__bss_start");
724 str_table_add (dynstr, "_edata");
725 str_table_add (dynstr, "_end");
727 data = g_new0 (int, num_symbols + 2 + NUM_BUCKETS);
728 data [0] = NUM_BUCKETS;
729 data [1] = num_symbols;
735 get_label_addr (MonoAotCompile *acfg, const char *name)
742 lab = g_hash_table_lookup (acfg->labels, name);
743 section = lab->section;
744 offset = lab->offset;
745 if (section->parent) {
746 value = section->parent->file_offset + section->cur_offset + offset;
748 value = section->file_offset + offset;
754 collect_syms (MonoAotCompile *acfg, int *hash, ElfStrTable *strtab, struct ElfSectHeader *sheaders, int *num_syms)
765 symbols = g_new0 (ElfSymbol, hash [1]);
767 symbols = g_new0 (ElfSymbol, *num_syms + SECT_NUM + 10); /* FIXME */
769 /* the first symbol is undef, all zeroes */
773 for (j = 1; j < SECT_NUM; ++j) {
774 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
775 symbols [i].st_shndx = j;
776 symbols [i].st_value = sheaders [j].sh_addr;
780 for (section = acfg->sections; section; section = section->next) {
783 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
784 if (strcmp (section->name, ".text") == 0) {
785 symbols [i].st_shndx = SECT_TEXT;
786 section->shidx = SECT_TEXT;
787 section->file_offset = 4096;
788 symbols [i].st_value = section->file_offset;
789 } else if (strcmp (section->name, ".data") == 0) {
790 symbols [i].st_shndx = SECT_DATA;
791 section->shidx = SECT_DATA;
792 section->file_offset = 4096 + 28; /* FIXME */
793 symbols [i].st_value = section->file_offset;
794 } else if (strcmp (section->name, ".bss") == 0) {
795 symbols [i].st_shndx = SECT_BSS;
796 section->shidx = SECT_BSS;
797 section->file_offset = 4096 + 28 + 8; /* FIXME */
798 symbols [i].st_value = section->file_offset;
803 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
806 if (!symbol->is_global)
808 symbols [i].st_info = (symbol->is_function? SYM_FUNC : SYM_OBJECT) | SYM_GLOBAL;
809 symbols [i].st_name = str_table_add (strtab, symbol->name);
810 /*g_print ("sym name %s tabled to %d\n", symbol->name, symbols [i].st_name);*/
811 section = symbol->section;
812 symbols [i].st_shndx = section->parent? section->parent->shidx: section->shidx;
813 lab = g_hash_table_lookup (acfg->labels, symbol->name);
814 offset = lab->offset;
815 if (section->parent) {
816 symbols [i].st_value = section->parent->file_offset + section->cur_offset + offset;
818 symbols [i].st_value = section->file_offset + offset;
822 /* add special symbols */
823 symbols [i].st_name = str_table_add (strtab, "__bss_start");
824 symbols [i].st_shndx = 0xfff1;
825 symbols [i].st_info = SYM_GLOBAL;
827 symbols [i].st_name = str_table_add (strtab, "_edata");
828 symbols [i].st_shndx = 0xfff1;
829 symbols [i].st_info = SYM_GLOBAL;
831 symbols [i].st_name = str_table_add (strtab, "_end");
832 symbols [i].st_shndx = 0xfff1;
833 symbols [i].st_info = SYM_GLOBAL;
839 /* add to hash table */
842 chain = hash + 2 + hash [0];
843 for (i = 0; i < hash [1]; ++i) {
845 /*g_print ("checking %d '%s' (sym %d)\n", symbols [i].st_name, strtab->data->str + symbols [i].st_name, i);*/
846 if (!symbols [i].st_name)
848 hashc = elf_hash ((guint8*)strtab->data->str + symbols [i].st_name);
849 slot = hashc % hash [0];
850 /*g_print ("hashing '%s' at slot %d (sym %d)\n", strtab->data->str + symbols [i].st_name, slot, i);*/
852 chain [i] = bucket [slot];
863 reloc_symbols (MonoAotCompile *acfg, ElfSymbol *symbols, struct ElfSectHeader *sheaders, ElfStrTable *strtab, gboolean dynamic)
871 for (section = acfg->sections; section; section = section->next) {
874 symbols [i].st_value = sheaders [section->shidx].sh_addr;
878 for (i = 1; i < SECT_NUM; ++i) {
879 symbols [i].st_value = sheaders [i].sh_addr;
882 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
885 if (dynamic && !symbol->is_global)
887 section = symbol->section;
888 lab = g_hash_table_lookup (acfg->labels, symbol->name);
889 offset = lab->offset;
890 if (section->parent) {
891 symbols [i].st_value = sheaders [section->parent->shidx].sh_addr + section->cur_offset + offset;
893 symbols [i].st_value = sheaders [section->shidx].sh_addr + offset;
898 symbols [i].st_value = sheaders [SECT_BSS].sh_addr;
901 symbols [i].st_value = sheaders [SECT_DATA].sh_addr + sheaders [SECT_DATA].sh_size;
904 symbols [i].st_value = sheaders [SECT_BSS].sh_addr + sheaders [SECT_BSS].sh_size;
909 resolve_relocations (MonoAotCompile *acfg)
913 gsize end_val, start_val;
918 rr = g_new0 (ElfReloc, acfg->num_relocs);
921 for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
922 end_val = get_label_addr (acfg, reloc->val1);
924 start_val = get_label_addr (acfg, reloc->val2);
925 } else if (reloc->val2_section) {
926 start_val = reloc->val2_offset;
927 if (reloc->val2_section->parent)
928 start_val += reloc->val2_section->parent->file_offset + reloc->val2_section->cur_offset;
930 start_val += reloc->val2_section->file_offset;
934 end_val = end_val - start_val + reloc->offset;
935 if (reloc->section->parent) {
936 data = reloc->section->parent->data;
937 data += reloc->section->cur_offset;
938 data += reloc->section_offset;
939 vaddr = reloc->section->parent->file_offset;
940 vaddr += reloc->section->cur_offset;
941 vaddr += reloc->section_offset;
943 data = reloc->section->data;
944 data += reloc->section_offset;
945 vaddr = reloc->section->file_offset;
946 vaddr += reloc->section_offset;
948 /* FIXME: little endian */
950 data [1] = end_val >> 8;
951 data [2] = end_val >> 16;
952 data [3] = end_val >> 24;
953 if (start_val == 0) {
955 rr [i].value = 8; /* FIXME: 386_RELATIVE */
957 g_assert (i <= acfg->num_relocs);
964 emit_writeout (MonoAotCompile *acfg)
966 char *outfile_name, *tmp_outfile_name;
968 struct ElfHeader header;
969 struct ElfProgHeader progh [3];
970 struct ElfSectHeader secth [SECT_NUM];
972 ElfStrTable str_table = {NULL, NULL};
973 ElfStrTable sh_str_table = {NULL, NULL};
974 ElfStrTable dyn_str_table = {NULL, NULL};
975 BinSection* sections [6];
976 BinSection *text_section = NULL, *data_section = NULL, *bss_section = NULL;
979 ElfDynamic dynamic [14];
981 int i, num_sections, file_offset, virt_offset, size, num_symtab;
984 if (acfg->aot_opts.outfile)
985 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
987 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
989 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
991 unlink (tmp_outfile_name);
992 file = fopen (tmp_outfile_name, "w");
995 /* Section headers */
996 memset (§h, 0, sizeof (secth));
997 memset (&dynamic, 0, sizeof (dynamic));
998 memset (&header, 0, sizeof (header));
1000 for (i = 1; i < SECT_NUM; ++i) {
1001 secth [i].sh_name = str_table_add (&sh_str_table, section_names [i]);
1002 secth [i].sh_type = section_type [i];
1003 secth [i].sh_link = section_link [i];
1004 secth [i].sh_addralign = section_align [i];
1005 secth [i].sh_flags = section_flags [i];
1006 secth [i].sh_entsize = section_esize [i];
1008 secth [SECT_DYNSYM].sh_info = 4;
1009 secth [SECT_SYMTAB].sh_info = 20;
1011 num_sections = collect_sections (acfg, secth, sections, 6);
1012 hash = build_hash (acfg, num_sections, &dyn_str_table);
1013 num_symtab = hash [1]; /* FIXME */
1014 g_print ("num_sections: %d\n", num_sections);
1015 g_print ("dynsym: %d, dynstr size: %d\n", hash [1], dyn_str_table.data->len);
1016 for (i = 0; i < num_sections; ++i) {
1017 g_print ("section %s, size: %d, %x\n", sections [i]->name, sections [i]->cur_offset, sections [i]->cur_offset);
1020 /* at this point we know where in the file the first segment sections go */
1021 dynsym = collect_syms (acfg, hash, &dyn_str_table, NULL, NULL);
1022 num_local_syms = hash [1];
1023 symtab = collect_syms (acfg, NULL, &str_table, secth, &num_local_syms);
1025 for (i = 0; i < num_sections; ++i) {
1026 if (sections [i]->shidx == SECT_TEXT) {
1027 text_section = sections [i];
1028 } else if (sections [i]->shidx == SECT_DATA) {
1029 data_section = sections [i];
1030 } else if (sections [i]->shidx == SECT_BSS) {
1031 bss_section = sections [i];
1035 file_offset = virt_offset = sizeof (header) + sizeof (progh);
1036 secth [SECT_HASH].sh_addr = secth [SECT_HASH].sh_offset = file_offset;
1037 size = sizeof (int) * (2 + hash [0] + hash [1]);
1038 virt_offset = (file_offset += size);
1039 secth [SECT_HASH].sh_size = size;
1040 secth [SECT_DYNSYM].sh_addr = secth [SECT_DYNSYM].sh_offset = file_offset;
1041 size = sizeof (ElfSymbol) * hash [1];
1042 virt_offset = (file_offset += size);
1043 secth [SECT_DYNSYM].sh_size = size;
1044 secth [SECT_DYNSTR].sh_addr = secth [SECT_DYNSTR].sh_offset = file_offset;
1045 size = dyn_str_table.data->len;
1046 virt_offset = (file_offset += size);
1047 secth [SECT_DYNSTR].sh_size = size;
1049 file_offset &= ~(4-1);
1050 secth [SECT_REL_DYN].sh_addr = secth [SECT_REL_DYN].sh_offset = file_offset;
1051 size = sizeof (ElfReloc) * acfg->num_relocs;
1052 secth [SECT_REL_DYN].sh_size = size;
1053 virt_offset = (file_offset += size);
1054 secth [SECT_REL_DYN].sh_size = size;
1055 file_offset += 4096-1;
1056 file_offset &= ~(4096-1);
1057 virt_offset = file_offset;
1058 secth [SECT_TEXT].sh_addr = secth [SECT_TEXT].sh_offset = file_offset;
1059 size = text_section->cur_offset;
1060 secth [SECT_TEXT].sh_size = size;
1061 file_offset += size;
1063 file_offset &= ~(4-1);
1064 virt_offset = file_offset;
1065 /* .dynamic, .got.plt, .data, .bss here */
1066 secth [SECT_DYNAMIC].sh_addr = virt_offset;
1067 secth [SECT_DYNAMIC].sh_offset = file_offset;
1068 size = sizeof (dynamic);
1069 secth [SECT_DYNAMIC].sh_size = size;
1072 file_offset += size;
1073 virt_offset += size;
1074 secth [SECT_GOT_PLT].sh_addr = virt_offset;
1075 secth [SECT_GOT_PLT].sh_offset = file_offset;
1077 secth [SECT_GOT_PLT].sh_size = size;
1080 file_offset += size;
1081 virt_offset += size;
1082 secth [SECT_DATA].sh_addr = virt_offset;
1083 secth [SECT_DATA].sh_offset = file_offset;
1084 size = data_section->cur_offset;
1085 secth [SECT_DATA].sh_size = size;
1088 file_offset += size;
1089 virt_offset += size;
1090 secth [SECT_BSS].sh_addr = virt_offset;
1091 secth [SECT_BSS].sh_offset = file_offset;
1092 size = bss_section->cur_offset;
1093 secth [SECT_BSS].sh_size = size;
1095 /* virtual doesn't matter anymore */
1096 secth [SECT_SHSTRTAB].sh_offset = file_offset;
1097 size = sh_str_table.data->len;
1098 secth [SECT_SHSTRTAB].sh_size = size;
1101 file_offset += size;
1102 secth [SECT_SYMTAB].sh_offset = file_offset;
1103 size = sizeof (ElfSymbol) * num_local_syms;
1104 secth [SECT_SYMTAB].sh_size = size;
1105 file_offset += size;
1106 secth [SECT_STRTAB].sh_offset = file_offset;
1107 size = str_table.data->len;
1108 secth [SECT_STRTAB].sh_size = size;
1109 file_offset += size;
1111 file_offset &= ~(4-1);
1113 text_section->file_offset = secth [SECT_TEXT].sh_offset;
1114 data_section->file_offset = secth [SECT_DATA].sh_offset;
1115 bss_section->file_offset = secth [SECT_BSS].sh_offset;
1117 header.e_ident [0] = 0x7f; header.e_ident [1] = 'E';
1118 header.e_ident [2] = 'L'; header.e_ident [3] = 'F';
1119 header.e_ident [4] = SIZEOF_VOID_P == 4? 1: 2;
1120 header.e_ident [5] = 1; /* FIXME: little endian, bigendian is 2 */
1121 header.e_ident [6] = 1; /* version */
1122 header.e_ident [7] = 0; /* FIXME: */
1123 header.e_ident [8] = 0; /* FIXME: */
1124 for (i = 9; i < 16; ++i)
1125 header.e_ident [i] = 0;
1127 header.e_type = 3; /* shared library */
1128 header.e_machine = 3; /* FIXME: 386 */
1129 header.e_version = 1; /* FIXME: */
1131 header.e_phoff = sizeof (header);
1132 header.e_ehsize = sizeof (header);
1133 header.e_phentsize = sizeof (struct ElfProgHeader);
1135 header.e_entry = secth [SECT_TEXT].sh_addr;
1136 header.e_shstrndx = 10;
1137 header.e_shentsize = sizeof (struct ElfSectHeader);
1138 header.e_shnum = SECT_NUM;
1139 header.e_shoff = file_offset;
1143 dynamic [i].d_tag = DYN_HASH;
1144 dynamic [i].d_val = secth [SECT_HASH].sh_offset;
1146 dynamic [i].d_tag = DYN_STRTAB;
1147 dynamic [i].d_val = secth [SECT_DYNSTR].sh_offset;
1149 dynamic [i].d_tag = DYN_SYMTAB;
1150 dynamic [i].d_val = secth [SECT_DYNSYM].sh_offset;
1152 dynamic [i].d_tag = DYN_STRSZ;
1153 dynamic [i].d_val = dyn_str_table.data->len;
1155 dynamic [i].d_tag = DYN_SYMENT;
1156 dynamic [i].d_val = sizeof (ElfSymbol);
1158 dynamic [i].d_tag = DYN_REL;
1159 dynamic [i].d_val = secth [SECT_REL_DYN].sh_offset;
1161 dynamic [i].d_tag = DYN_RELSZ;
1162 dynamic [i].d_val = secth [SECT_REL_DYN].sh_size;
1164 dynamic [i].d_tag = DYN_RELENT;
1165 dynamic [i].d_val = sizeof (ElfReloc);
1167 dynamic [i].d_tag = DYN_RELCOUNT;
1168 dynamic [i].d_val = acfg->num_relocs;
1171 /* Program header */
1172 memset (&progh, 0, sizeof (progh));
1173 progh [0].p_type = 1; /* LOAD */
1174 progh [0].p_filesz = progh [0].p_memsz = secth [SECT_DYNAMIC].sh_offset;
1175 progh [0].p_align = 4096;
1176 progh [0].p_flags = 5;
1178 progh [1].p_type = 1;
1179 progh [1].p_offset = secth [SECT_DYNAMIC].sh_offset;
1180 progh [1].p_vaddr = progh [1].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1181 progh [1].p_filesz = secth [SECT_BSS].sh_offset - secth [SECT_DYNAMIC].sh_offset;
1182 progh [1].p_memsz = secth [SECT_BSS].sh_addr + secth [SECT_BSS].sh_size - secth [SECT_DYNAMIC].sh_addr;
1183 progh [1].p_align = 4096;
1184 progh [1].p_flags = 6;
1186 progh [2].p_type = 2; /* DYNAMIC */
1187 progh [2].p_offset = secth [SECT_DYNAMIC].sh_offset;
1188 progh [2].p_vaddr = progh [2].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1189 progh [2].p_filesz = progh [2].p_memsz = secth [SECT_DYNAMIC].sh_size;
1190 progh [2].p_align = 4;
1191 progh [2].p_flags = 6;
1193 reloc_symbols (acfg, dynsym, secth, &dyn_str_table, TRUE);
1194 reloc_symbols (acfg, symtab, secth, &str_table, FALSE);
1195 relocs = resolve_relocations (acfg);
1197 fwrite (&header, sizeof (header), 1, file);
1198 fwrite (&progh, sizeof (progh), 1, file);
1199 fwrite (hash, sizeof (int) * (hash [0] + hash [1] + 2), 1, file);
1200 fwrite (dynsym, sizeof (ElfSymbol) * hash [1], 1, file);
1201 fwrite (dyn_str_table.data->str, dyn_str_table.data->len, 1, file);
1203 fseek (file, secth [SECT_REL_DYN].sh_offset, SEEK_SET);
1204 fwrite (relocs, sizeof (ElfReloc), acfg->num_relocs, file);
1206 fseek (file, secth [SECT_TEXT].sh_offset, SEEK_SET);
1207 /* write .text, .data, .bss sections */
1208 fwrite (text_section->data, text_section->cur_offset, 1, file);
1211 fwrite (dynamic, sizeof (dynamic), 1, file);
1213 size = secth [SECT_DYNAMIC].sh_addr;
1214 fwrite (&size, sizeof (size), 1, file);
1215 fseek (file, secth [SECT_DATA].sh_offset, SEEK_SET);
1216 fwrite (data_section->data, data_section->cur_offset, 1, file);
1218 fseek (file, secth [SECT_SHSTRTAB].sh_offset, SEEK_SET);
1219 fwrite (sh_str_table.data->str, sh_str_table.data->len, 1, file);
1220 fseek (file, secth [SECT_SYMTAB].sh_offset, SEEK_SET);
1221 fwrite (symtab, sizeof (ElfSymbol) * num_local_syms, 1, file);
1222 fseek (file, secth [SECT_STRTAB].sh_offset, SEEK_SET);
1223 fwrite (str_table.data->str, str_table.data->len, 1, file);
1224 /*g_print ("file_offset %d vs %d\n", file_offset, ftell (file));*/
1225 /*g_assert (file_offset >= ftell (file));*/
1226 fseek (file, file_offset, SEEK_SET);
1227 fwrite (§h, sizeof (secth), 1, file);
1229 rename (tmp_outfile_name, outfile_name);
1231 g_free (tmp_outfile_name);
1232 g_free (outfile_name);
1235 #endif /* USE_ELF_WRITER */
1240 emit_start (MonoAotCompile *acfg)
1242 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
1243 acfg->fp = fdopen (i, "w+");
1244 g_assert (acfg->fp);
1248 emit_unset_mode (MonoAotCompile *acfg)
1250 if (acfg->mode == EMIT_NONE)
1252 fprintf (acfg->fp, "\n");
1253 acfg->mode = EMIT_NONE;
1257 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
1259 emit_unset_mode (acfg);
1260 #if defined(PLATFORM_WIN32)
1261 fprintf (acfg->fp, ".section %s\n", section_name);
1262 #elif defined(sparc)
1263 /* For solaris as, GNU as should accept the same */
1264 fprintf (acfg->fp, ".section \"%s\"\n", section_name);
1265 #elif defined(__ppc__) && defined(__MACH__)
1266 /* This needs to be made more precise on mach. */
1267 fprintf (acfg->fp, "%s\n", subsection_index == 0 ? ".text" : ".data");
1269 fprintf (acfg->fp, "%s %d\n", section_name, subsection_index);
1274 emit_symbol_type (MonoAotCompile *acfg, const char *name, gboolean func)
1283 emit_unset_mode (acfg);
1285 fprintf (acfg->fp, "\t.type %s,#%s\n", name, stype);
1286 #elif defined(PLATFORM_WIN32)
1288 #elif !(defined(__ppc__) && defined(__MACH__))
1289 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1290 #elif defined(__x86_64__) || defined(__i386__)
1291 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1296 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
1298 emit_unset_mode (acfg);
1299 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1300 // mach-o always uses a '_' prefix.
1301 fprintf (acfg->fp, "\t.globl _%s\n", name);
1303 fprintf (acfg->fp, "\t.globl %s\n", name);
1306 emit_symbol_type (acfg, name, func);
1310 emit_label (MonoAotCompile *acfg, const char *name)
1312 emit_unset_mode (acfg);
1313 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1314 // mach-o always uses a '_' prefix.
1315 fprintf (acfg->fp, "_%s:\n", name);
1317 fprintf (acfg->fp, "%s:\n", name);
1320 #if defined(PLATFORM_WIN32)
1321 /* Emit a normal label too */
1322 fprintf (acfg->fp, "%s:\n", name);
1327 emit_string (MonoAotCompile *acfg, const char *value)
1329 emit_unset_mode (acfg);
1330 fprintf (acfg->fp, "\t%s \"%s\"\n", AS_STRING_DIRECTIVE, value);
1334 emit_line (MonoAotCompile *acfg)
1336 emit_unset_mode (acfg);
1337 fprintf (acfg->fp, "\n");
1341 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
1343 emit_unset_mode (acfg);
1344 emit_section_change (acfg, ".text", 1);
1345 emit_global (acfg, name, FALSE);
1346 emit_label (acfg, name);
1347 emit_string (acfg, value);
1351 emit_alignment (MonoAotCompile *acfg, int size)
1353 emit_unset_mode (acfg);
1354 #if defined(__ppc__) && defined(__MACH__)
1355 // the mach-o assembler specifies alignments as powers of 2.
1356 fprintf (acfg->fp, "\t.align %d\t; ilog2\n", ilog2(size));
1357 #elif defined(__powerpc__)
1358 /* ignore on linux/ppc */
1360 fprintf (acfg->fp, "\t.align %d\n", size);
1365 emit_pointer (MonoAotCompile *acfg, const char *target)
1367 emit_unset_mode (acfg);
1368 emit_alignment (acfg, sizeof (gpointer));
1369 #if defined(__x86_64__)
1370 fprintf (acfg->fp, "\t.quad %s\n", target);
1371 #elif defined(sparc) && SIZEOF_VOID_P == 8
1372 fprintf (acfg->fp, "\t.xword %s\n", target);
1374 fprintf (acfg->fp, "\t.long %s\n", target);
1379 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
1382 if (acfg->mode != EMIT_BYTE) {
1383 acfg->mode = EMIT_BYTE;
1384 acfg->col_count = 0;
1386 for (i = 0; i < size; ++i, ++acfg->col_count) {
1387 if ((acfg->col_count % 32) == 0)
1388 fprintf (acfg->fp, "\n\t.byte ");
1390 fprintf (acfg->fp, ", ");
1391 fprintf (acfg->fp, "0x%x", buf [i]);
1396 emit_int16 (MonoAotCompile *acfg, int value)
1398 if (acfg->mode != EMIT_WORD) {
1399 acfg->mode = EMIT_WORD;
1400 acfg->col_count = 0;
1402 if ((acfg->col_count++ % 8) == 0)
1403 fprintf (acfg->fp, "\n\t.word ");
1405 fprintf (acfg->fp, ", ");
1406 fprintf (acfg->fp, "%d", value);
1410 emit_int32 (MonoAotCompile *acfg, int value)
1412 if (acfg->mode != EMIT_LONG) {
1413 acfg->mode = EMIT_LONG;
1414 acfg->col_count = 0;
1416 if ((acfg->col_count++ % 8) == 0)
1417 fprintf (acfg->fp, "\n\t.long ");
1419 fprintf (acfg->fp, ", ");
1420 fprintf (acfg->fp, "%d", value);
1424 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
1426 if (acfg->mode != EMIT_LONG) {
1427 acfg->mode = EMIT_LONG;
1428 acfg->col_count = 0;
1430 if ((acfg->col_count++ % 8) == 0)
1431 fprintf (acfg->fp, "\n\t.long ");
1433 fprintf (acfg->fp, ", ");
1435 fprintf (acfg->fp, "%s - %s %c %d", end, start, offset < 0? ' ': '+', offset);
1437 fprintf (acfg->fp, "%s - %s", end, start);
1441 emit_zero_bytes (MonoAotCompile *acfg, int num)
1443 emit_unset_mode (acfg);
1444 fprintf (acfg->fp, "\t.skip %d\n", num);
1448 emit_writeout (MonoAotCompile *acfg)
1450 char *command, *objfile;
1451 char *outfile_name, *tmp_outfile_name;
1455 #if defined(__x86_64__)
1456 #define AS_OPTIONS "--64"
1457 #elif defined(sparc) && SIZEOF_VOID_P == 8
1458 #define AS_OPTIONS "-xarch=v9"
1460 #define AS_OPTIONS ""
1462 command = g_strdup_printf ("as %s %s -o %s.o", AS_OPTIONS, acfg->tmpfname, acfg->tmpfname);
1463 printf ("Executing the native assembler: %s\n", command);
1464 if (system (command) != 0) {
1471 if (acfg->aot_opts.outfile)
1472 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1474 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1476 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1479 command = g_strdup_printf ("ld -shared -G -o %s %s.o", outfile_name, acfg->tmpfname);
1480 #elif defined(__ppc__) && defined(__MACH__)
1481 command = g_strdup_printf ("gcc -dynamiclib -o %s %s.o", outfile_name, acfg->tmpfname);
1482 #elif defined(PLATFORM_WIN32)
1483 command = g_strdup_printf ("gcc -shared --dll -mno-cygwin -o %s %s.o", outfile_name, acfg->tmpfname);
1485 command = g_strdup_printf ("ld -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1487 printf ("Executing the native linker: %s\n", command);
1488 if (system (command) != 0) {
1489 g_free (tmp_outfile_name);
1490 g_free (outfile_name);
1496 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
1499 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
1500 printf ("Stripping the binary: %s\n", com);
1504 rename (tmp_outfile_name, outfile_name);
1506 g_free (tmp_outfile_name);
1507 g_free (outfile_name);
1509 if (acfg->aot_opts.save_temps)
1510 printf ("Retained input file.\n");
1512 unlink (acfg->tmpfname);
1516 #endif /* ASM_WRITER */
1519 emit_byte (MonoAotCompile *acfg, guint8 val)
1521 emit_bytes (acfg, &val, 1);
1525 mono_get_field_token (MonoClassField *field)
1527 MonoClass *klass = field->parent;
1530 for (i = 0; i < klass->field.count; ++i) {
1531 if (field == &klass->fields [i])
1532 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
1535 g_assert_not_reached ();
1540 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
1544 //printf ("ENCODE: %d 0x%x.\n", value, value);
1547 * Same encoding as the one used in the metadata, extended to handle values
1548 * greater than 0x1fffffff.
1550 if ((value >= 0) && (value <= 127))
1552 else if ((value >= 0) && (value <= 16383)) {
1553 p [0] = 0x80 | (value >> 8);
1554 p [1] = value & 0xff;
1556 } else if ((value >= 0) && (value <= 0x1fffffff)) {
1557 p [0] = (value >> 24) | 0xc0;
1558 p [1] = (value >> 16) & 0xff;
1559 p [2] = (value >> 8) & 0xff;
1560 p [3] = value & 0xff;
1565 p [1] = (value >> 24) & 0xff;
1566 p [2] = (value >> 16) & 0xff;
1567 p [3] = (value >> 8) & 0xff;
1568 p [4] = value & 0xff;
1576 get_image_index (MonoAotCompile *cfg, MonoImage *image)
1580 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
1584 index = g_hash_table_size (cfg->image_hash);
1585 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
1586 g_ptr_array_add (cfg->image_table, image);
1592 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
1595 MonoClass *k = NULL;
1597 /* FIXME: Search referenced images as well */
1598 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
1599 /* Since we don't compile generic methods, the context is empty */
1600 k = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
1605 g_assert (i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows);
1607 return MONO_TOKEN_TYPE_SPEC | (i + 1);
1611 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
1613 if (klass->generic_class) {
1614 g_assert (klass->type_token);
1616 encode_value (find_typespec_for_class (acfg, klass), buf, &buf);
1617 encode_value (get_image_index (acfg, acfg->image), buf, &buf);
1618 } else if (klass->type_token) {
1619 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
1620 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, buf, &buf);
1621 encode_value (get_image_index (acfg, klass->image), buf, &buf);
1624 g_assert (klass->rank > 0);
1625 encode_value (MONO_TOKEN_TYPE_DEF, buf, &buf);
1626 encode_value (get_image_index (acfg, klass->image), buf, &buf);
1627 encode_value (klass->rank, buf, &buf);
1628 encode_klass_ref (acfg, klass->element_class, buf, &buf);
1634 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
1636 guint32 token = mono_get_field_token (field);
1638 encode_klass_ref (cfg, field->parent, buf, &buf);
1639 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
1640 encode_value (token - MONO_TOKEN_FIELD_DEF, buf, &buf);
1646 find_methodspec_for_method (MonoAotCompile *acfg, MonoMethod *method)
1649 MonoMethod *m = NULL;
1651 /* FIXME: Search referenced images as well */
1652 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
1653 /* Since we don't compile generic methods, the context is empty */
1654 m = mono_get_method_full (acfg->image, MONO_TOKEN_METHOD_SPEC | (i + 1), NULL, NULL);
1659 g_assert (i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows);
1661 return MONO_TOKEN_METHOD_SPEC | (i + 1);
1666 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
1668 guint32 image_index = get_image_index (acfg, method->klass->image);
1669 guint32 token = method->token;
1670 MonoJumpInfoToken *ji;
1672 g_assert (image_index < 255);
1674 if (mono_method_signature (method)->is_inflated) {
1676 * This is a generic method, find the original token which referenced it and
1679 /* This doesn't work for some reason */
1681 image_index = get_image_index (acfg, acfg->image);
1682 g_assert (image_index < 255);
1683 token = find_methodspec_for_method (acfg, method);
1685 /* Obtain the token from information recorded by the JIT */
1686 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1688 image_index = get_image_index (acfg, ji->image);
1689 g_assert (image_index < 255);
1692 encode_value ((255 << 24), buf, &buf);
1693 encode_value (image_index, buf, &buf);
1694 encode_value (token, buf, &buf);
1696 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1697 encode_value ((image_index << 24) | mono_metadata_token_index (token), buf, &buf);
1703 compare_patches (gconstpointer a, gconstpointer b)
1707 i = (*(MonoJumpInfo**)a)->ip.i;
1708 j = (*(MonoJumpInfo**)b)->ip.i;
1720 get_plt_index (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
1724 GHashTable *hash = acfg->patch_to_plt_offset;
1726 switch (patch_info->type) {
1727 case MONO_PATCH_INFO_METHOD:
1728 case MONO_PATCH_INFO_WRAPPER:
1729 case MONO_PATCH_INFO_INTERNAL_METHOD:
1730 case MONO_PATCH_INFO_CLASS_INIT: {
1731 MonoJumpInfo *new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
1732 gpointer patch_id = NULL;
1734 /* First check for an existing patch */
1735 switch (patch_info->type) {
1736 case MONO_PATCH_INFO_METHOD:
1737 patch_id = patch_info->data.method;
1739 case MONO_PATCH_INFO_INTERNAL_METHOD:
1740 patch_id = (gpointer)patch_info->data.name;
1742 case MONO_PATCH_INFO_CLASS_INIT:
1743 patch_id = patch_info->data.klass;
1745 case MONO_PATCH_INFO_WRAPPER:
1746 hash = acfg->patch_to_plt_offset_wrapper [patch_info->data.method->wrapper_type];
1748 acfg->patch_to_plt_offset_wrapper [patch_info->data.method->wrapper_type] = g_hash_table_new (NULL, NULL);
1749 hash = acfg->patch_to_plt_offset_wrapper [patch_info->data.method->wrapper_type];
1751 patch_id = patch_info->data.method;
1754 g_assert_not_reached ();
1758 idx = GPOINTER_TO_UINT (g_hash_table_lookup (hash, patch_id));
1762 g_hash_table_insert (hash, patch_id, GUINT_TO_POINTER (acfg->plt_offset));
1766 res = acfg->plt_offset;
1767 g_hash_table_insert (acfg->plt_offset_to_patch, GUINT_TO_POINTER (acfg->plt_offset), new_ji);
1768 acfg->plt_offset ++;
1771 /* Nullify the patch */
1772 patch_info->type = MONO_PATCH_INFO_NONE;
1784 * Returns the offset of the GOT slot where the runtime object resulting from resolving
1785 * JI could be found if it exists, otherwise allocates a new one.
1788 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1792 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji));
1794 return got_offset - 1;
1796 got_offset = acfg->got_offset;
1797 acfg->got_offset ++;
1799 acfg->stats.got_slots ++;
1800 acfg->stats.got_slot_types [ji->type] ++;
1806 get_shared_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1811 if (!g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji)) {
1812 got_offset = get_got_offset (acfg, ji);
1813 copy = mono_patch_info_dup_mp (acfg->mempool, ji);
1814 g_hash_table_insert (acfg->patch_to_shared_got_offset, copy, GUINT_TO_POINTER (got_offset + 1));
1815 g_ptr_array_add (acfg->shared_patches, copy);
1818 return get_got_offset (acfg, ji);
1822 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
1825 int i, pindex, start_index, method_index;
1828 int func_alignment = 16;
1830 MonoJumpInfo *patch_info;
1831 MonoMethodHeader *header;
1835 method = cfg->method;
1836 code = cfg->native_code;
1837 header = mono_method_get_header (method);
1839 method_index = mono_metadata_token_index (method->token);
1841 /* Make the labels local */
1842 symbol = g_strdup_printf (".Lm_%x", method_index);
1844 emit_alignment (acfg, func_alignment);
1845 emit_label (acfg, symbol);
1846 if (acfg->aot_opts.write_symbols)
1847 emit_global (acfg, symbol, TRUE);
1849 if (cfg->verbose_level > 0)
1850 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
1852 acfg->stats.code_size += cfg->code_len;
1854 /* Collect and sort relocations */
1855 patches = g_ptr_array_new ();
1856 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
1857 g_ptr_array_add (patches, patch_info);
1858 g_ptr_array_sort (patches, compare_patches);
1860 acfg->method_got_offsets [method_index] = acfg->got_offset;
1862 for (i = 0; i < cfg->code_len; i++) {
1864 for (pindex = start_index; pindex < patches->len; ++pindex) {
1865 patch_info = g_ptr_array_index (patches, pindex);
1866 if (patch_info->ip.i >= i)
1870 #ifdef MONO_ARCH_HAVE_PIC_AOT
1873 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
1874 start_index = pindex;
1876 switch (patch_info->type) {
1877 case MONO_PATCH_INFO_LABEL:
1878 case MONO_PATCH_INFO_BB:
1879 case MONO_PATCH_INFO_NONE:
1881 case MONO_PATCH_INFO_GOT_OFFSET: {
1882 guint32 offset = mono_arch_get_patch_offset (code + i);
1883 emit_bytes (acfg, code + i, offset);
1884 emit_symbol_diff (acfg, "got", ".", offset);
1886 i += offset + 4 - 1;
1892 char *direct_call_target;
1894 if (!is_got_patch (patch_info->type))
1898 * If this patch is a call, try emitting a direct call instead of
1899 * through a PLT entry. This is possible if the called method is in
1900 * the same assembly and requires no initialization.
1902 direct_call_target = NULL;
1903 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == cfg->method->klass->image)) {
1904 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
1906 guint32 callee_idx = mono_metadata_token_index (callee_cfg->method->token);
1907 if (!acfg->has_got_slots [callee_idx] && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)) {
1908 //printf ("DIRECT: %s %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (callee_cfg->method, TRUE));
1909 direct_call_target = g_strdup_printf (".Lm_%x", mono_metadata_token_index (callee_cfg->method->token));
1910 patch_info->type = MONO_PATCH_INFO_NONE;
1911 acfg->stats.direct_calls ++;
1915 acfg->stats.all_calls ++;
1918 if (!direct_call_target) {
1919 plt_index = get_plt_index (acfg, patch_info);
1920 if (plt_index != -1) {
1921 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
1922 direct_call_target = g_strdup_printf (".Lp_%d", plt_index);
1926 if (direct_call_target) {
1927 #if defined(__i386__) || defined(__x86_64__)
1928 g_assert (code [i] == 0xe8);
1929 /* Need to make sure this is exactly 5 bytes long */
1930 emit_byte (acfg, '\xe8');
1931 emit_symbol_diff (acfg, direct_call_target, ".", -4);
1934 g_assert_not_reached ();
1937 got_slot = get_got_offset (acfg, patch_info);
1939 emit_bytes (acfg, code + i, mono_arch_get_patch_offset (code + i));
1941 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
1942 #elif defined(__i386__)
1943 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
1946 i += mono_arch_get_patch_offset (code + i) + 4 - 1;
1952 #endif /* MONO_ARCH_HAVE_PIC_AOT */
1955 emit_bytes (acfg, code + i, 1);
1963 * Encode PATCH_INFO into its disk representation. If SHARED is true, encode some types
1964 * of patches by allocating a GOT entry for them, and encode the GOT offset instead.
1967 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf, gboolean shared)
1971 switch (patch_info->type) {
1972 case MONO_PATCH_INFO_NONE:
1974 case MONO_PATCH_INFO_IMAGE:
1975 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
1977 case MONO_PATCH_INFO_METHOD_REL:
1978 encode_value ((gint)patch_info->data.offset, p, &p);
1980 case MONO_PATCH_INFO_SWITCH: {
1981 gpointer *table = (gpointer *)patch_info->data.table->table;
1984 encode_value (patch_info->data.table->table_size, p, &p);
1985 for (k = 0; k < patch_info->data.table->table_size; k++)
1986 encode_value ((int)(gssize)table [k], p, &p);
1989 case MONO_PATCH_INFO_METHODCONST:
1990 case MONO_PATCH_INFO_METHOD:
1991 case MONO_PATCH_INFO_METHOD_JUMP:
1992 encode_method_ref (acfg, patch_info->data.method, p, &p);
1994 case MONO_PATCH_INFO_INTERNAL_METHOD: {
1995 guint32 len = strlen (patch_info->data.name);
1997 encode_value (len, p, &p);
1999 memcpy (p, patch_info->data.name, len);
2004 case MONO_PATCH_INFO_LDSTR: {
2005 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
2006 guint32 token = patch_info->data.token->token;
2007 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
2008 encode_value (image_index, p, &p);
2009 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
2012 case MONO_PATCH_INFO_RVA:
2013 case MONO_PATCH_INFO_DECLSEC:
2014 case MONO_PATCH_INFO_LDTOKEN:
2015 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2017 guint32 offset = get_got_offset (acfg, patch_info);
2018 encode_value (offset, p, &p);
2020 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
2021 encode_value (patch_info->data.token->token, p, &p);
2024 case MONO_PATCH_INFO_EXC_NAME: {
2025 MonoClass *ex_class;
2028 mono_class_from_name (mono_defaults.exception_class->image,
2029 "System", patch_info->data.target);
2030 g_assert (ex_class);
2031 encode_klass_ref (acfg, ex_class, p, &p);
2034 case MONO_PATCH_INFO_R4:
2035 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2037 case MONO_PATCH_INFO_R8:
2038 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2039 encode_value (*(((guint32 *)patch_info->data.target) + 1), p, &p);
2041 case MONO_PATCH_INFO_VTABLE:
2042 case MONO_PATCH_INFO_CLASS:
2043 case MONO_PATCH_INFO_IID:
2044 case MONO_PATCH_INFO_ADJUSTED_IID:
2046 guint32 offset = get_got_offset (acfg, patch_info);
2047 encode_value (offset, p, &p);
2049 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2052 case MONO_PATCH_INFO_CLASS_INIT:
2053 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2055 case MONO_PATCH_INFO_FIELD:
2056 case MONO_PATCH_INFO_SFLDA:
2058 guint32 offset = get_got_offset (acfg, patch_info);
2059 encode_value (offset, p, &p);
2061 encode_field_info (acfg, patch_info->data.field, p, &p);
2064 case MONO_PATCH_INFO_WRAPPER: {
2065 encode_value (patch_info->data.method->wrapper_type, p, &p);
2067 switch (patch_info->data.method->wrapper_type) {
2068 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
2070 guint32 image_index;
2073 m = mono_marshal_method_from_wrapper (patch_info->data.method);
2074 image_index = get_image_index (acfg, m->klass->image);
2076 g_assert (image_index < 256);
2077 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
2079 encode_value ((image_index << 24) + (mono_metadata_token_index (token)), p, &p);
2082 case MONO_WRAPPER_PROXY_ISINST:
2083 case MONO_WRAPPER_LDFLD:
2084 case MONO_WRAPPER_LDFLDA:
2085 case MONO_WRAPPER_STFLD:
2086 case MONO_WRAPPER_LDFLD_REMOTE:
2087 case MONO_WRAPPER_STFLD_REMOTE:
2088 case MONO_WRAPPER_ISINST: {
2089 MonoClass *proxy_class = (MonoClass*)mono_marshal_method_from_wrapper (patch_info->data.method);
2090 encode_klass_ref (acfg, proxy_class, p, &p);
2093 case MONO_WRAPPER_ALLOC: {
2094 int alloc_type = mono_gc_get_managed_allocator_type (patch_info->data.method);
2095 g_assert (alloc_type != -1);
2096 encode_value (alloc_type, p, &p);
2099 case MONO_WRAPPER_STELEMREF:
2102 g_assert_not_reached ();
2107 g_warning ("unable to handle jump info %d", patch_info->type);
2108 g_assert_not_reached ();
2115 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
2119 int j, pindex, buf_size, n_patches;
2123 MonoJumpInfo *patch_info;
2124 MonoMethodHeader *header;
2125 guint32 last_offset, method_idx;
2127 guint32 first_got_offset;
2129 method = cfg->method;
2130 code = cfg->native_code;
2131 header = mono_method_get_header (method);
2133 method_idx = mono_metadata_token_index (method->token);
2135 /* Make the labels local */
2136 symbol = g_strdup_printf (".Lm_%x_p", method_idx);
2138 /* Sort relocations */
2139 patches = g_ptr_array_new ();
2140 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
2141 g_ptr_array_add (patches, patch_info);
2142 g_ptr_array_sort (patches, compare_patches);
2144 first_got_offset = acfg->method_got_offsets [mono_metadata_token_index (cfg->method->token)];
2146 /**********************/
2147 /* Encode method info */
2148 /**********************/
2150 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
2151 p = buf = g_malloc (buf_size);
2153 if (mono_class_get_cctor (method->klass))
2154 encode_klass_ref (acfg, method->klass, p, &p);
2156 /* Not needed when loading the method */
2157 encode_value (0, p, &p);
2160 if (cfg->opt & MONO_OPT_SHARED) {
2161 encode_value (g_list_length (cfg->ldstr_list), p, &p);
2162 for (l = cfg->ldstr_list; l; l = l->next) {
2163 encode_value ((long)l->data, p, &p);
2167 /* Used only in shared mode */
2168 g_assert (!cfg->ldstr_list);
2171 for (pindex = 0; pindex < patches->len; ++pindex) {
2172 patch_info = g_ptr_array_index (patches, pindex);
2174 if ((patch_info->type == MONO_PATCH_INFO_LABEL) ||
2175 (patch_info->type == MONO_PATCH_INFO_BB) ||
2176 (patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
2177 (patch_info->type == MONO_PATCH_INFO_NONE)) {
2178 patch_info->type = MONO_PATCH_INFO_NONE;
2183 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
2184 /* Stored in a GOT slot initialized at module load time */
2185 patch_info->type = MONO_PATCH_INFO_NONE;
2189 if ((patch_info->type == MONO_PATCH_INFO_METHOD) ||
2190 (patch_info->type == MONO_PATCH_INFO_INTERNAL_METHOD) ||
2191 (patch_info->type == MONO_PATCH_INFO_WRAPPER) ||
2192 (patch_info->type == MONO_PATCH_INFO_CLASS_INIT)) {
2193 /* Calls are made through the PLT */
2194 patch_info->type = MONO_PATCH_INFO_NONE;
2202 g_assert (acfg->has_got_slots [method_idx]);
2204 encode_value (n_patches, p, &p);
2207 encode_value (first_got_offset, p, &p);
2209 /* First encode the type+position table */
2212 for (pindex = 0; pindex < patches->len; ++pindex) {
2214 patch_info = g_ptr_array_index (patches, pindex);
2216 if (patch_info->type == MONO_PATCH_INFO_NONE)
2221 //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
2222 offset = patch_info->ip.i - last_offset;
2223 last_offset = patch_info->ip.i;
2225 /* Only the type is needed */
2226 *p = patch_info->type;
2232 printf ("%s:\n", mono_method_full_name (cfg->method, TRUE));
2233 for (pindex = 0; pindex < patches->len; ++pindex) {
2234 patch_info = g_ptr_array_index (patches, pindex);
2235 if (patch_info->type != MONO_PATCH_INFO_NONE) {
2236 printf ("\t%s", get_patch_name (patch_info->type));
2237 if (patch_info->type == MONO_PATCH_INFO_VTABLE)
2238 printf (": %s\n", patch_info->data.klass->name);
2246 /* Then encode the other info */
2247 for (pindex = 0; pindex < patches->len; ++pindex) {
2248 patch_info = g_ptr_array_index (patches, pindex);
2250 encode_patch (acfg, patch_info, p, &p, TRUE);
2253 acfg->stats.info_size += p - buf;
2255 /* Emit method info */
2257 emit_label (acfg, symbol);
2259 g_assert (p - buf < buf_size);
2260 emit_bytes (acfg, buf, p - buf);
2267 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
2271 guint32 debug_info_size;
2274 MonoMethodHeader *header;
2275 guint8 *p, *buf, *debug_info;
2277 method = cfg->method;
2278 code = cfg->native_code;
2279 header = mono_method_get_header (method);
2281 /* Make the labels local */
2282 symbol = g_strdup_printf (".Le_%x_p", mono_metadata_token_index (method->token));
2284 buf_size = header->num_clauses * 256 + 128;
2285 p = buf = g_malloc (buf_size);
2287 encode_value (cfg->code_len, p, &p);
2288 encode_value (cfg->used_int_regs, p, &p);
2290 /* Exception table */
2291 if (header->num_clauses) {
2292 MonoJitInfo *jinfo = cfg->jit_info;
2294 for (k = 0; k < header->num_clauses; ++k) {
2295 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
2297 encode_value (ei->exvar_offset, p, &p);
2299 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
2300 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
2302 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
2303 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
2304 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
2308 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
2310 encode_value (debug_info_size, p, &p);
2311 if (debug_info_size) {
2312 memcpy (p, debug_info, debug_info_size);
2313 p += debug_info_size;
2314 g_free (debug_info);
2317 acfg->stats.ex_info_size += p - buf;
2321 emit_label (acfg, symbol);
2323 g_assert (p - buf < buf_size);
2324 emit_bytes (acfg, buf, p - buf);
2331 emit_klass_info (MonoAotCompile *acfg, guint32 token)
2333 MonoClass *klass = mono_class_get (acfg->image, token);
2337 gboolean no_special_static;
2339 buf_size = 10240 + (klass->vtable_size * 16);
2340 p = buf = g_malloc (buf_size);
2344 mono_class_init (klass);
2347 * Emit all the information which is required for creating vtables so
2348 * the runtime does not need to create the MonoMethod structures which
2349 * take up a lot of space.
2352 no_special_static = !mono_class_has_special_static_fields (klass);
2354 if (klass->generic_container) {
2355 encode_value (-1, p, &p);
2357 encode_value (klass->vtable_size, p, &p);
2358 encode_value ((no_special_static << 7) | (klass->has_static_refs << 6) | (klass->has_references << 5) | ((klass->blittable << 4) | (klass->nested_classes ? 1 : 0) << 3) | (klass->has_cctor << 2) | (klass->has_finalize << 1) | klass->ghcimpl, p, &p);
2359 if (klass->has_cctor)
2360 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
2361 if (klass->has_finalize)
2362 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
2364 encode_value (klass->instance_size, p, &p);
2365 encode_value (mono_class_data_size (klass), p, &p);
2366 encode_value (klass->packing_size, p, &p);
2367 encode_value (klass->min_align, p, &p);
2369 for (i = 0; i < klass->vtable_size; ++i) {
2370 MonoMethod *cm = klass->vtable [i];
2373 encode_method_ref (acfg, cm, p, &p);
2375 encode_value (0, p, &p);
2379 acfg->stats.class_info_size += p - buf;
2382 label = g_strdup_printf (".LK_I_%x", token - MONO_TOKEN_TYPE_DEF - 1);
2383 emit_label (acfg, label);
2385 g_assert (p - buf < buf_size);
2386 emit_bytes (acfg, buf, p - buf);
2391 * Calls made from AOTed code are routed through a table of jumps similar to the
2392 * ELF PLT (Program Linkage Table). The differences are the following:
2393 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
2394 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
2395 * jumps. This means the jumps need to be patched when the address of the callee is
2396 * known. Initially the PLT entries jump to code which transfer control to the
2397 * AOT runtime through the first PLT entry.
2400 emit_plt (MonoAotCompile *acfg)
2405 guint32 *plt_info_offsets;
2408 * Encode info need to resolve PLT entries.
2410 buf_size = acfg->plt_offset * 128;
2411 p = buf = g_malloc (buf_size);
2413 plt_info_offsets = g_new0 (guint32, acfg->plt_offset);
2415 for (i = 1; i < acfg->plt_offset; ++i) {
2416 MonoJumpInfo *patch_info = g_hash_table_lookup (acfg->plt_offset_to_patch, GUINT_TO_POINTER (i));
2418 plt_info_offsets [i] = p - buf;
2419 encode_value (patch_info->type, p, &p);
2420 encode_patch (acfg, patch_info, p, &p, FALSE);
2424 symbol = g_strdup_printf ("plt");
2426 /* This section will be made read-write by the AOT loader */
2427 emit_section_change (acfg, ".text", 0);
2428 emit_global (acfg, symbol, TRUE);
2429 emit_alignment (acfg, PAGESIZE);
2430 emit_label (acfg, symbol);
2433 * The first plt entry is used to transfer code to the AOT loader.
2435 emit_label (acfg, ".Lp_0");
2436 #if defined(__i386__)
2437 /* It is filled up during loading by the AOT loader. */
2438 emit_zero_bytes (acfg, 16);
2439 #elif defined(__x86_64__)
2440 /* This should be exactly 16 bytes long */
2441 /* jmpq *<offset>(%rip) */
2442 emit_byte (acfg, '\xff');
2443 emit_byte (acfg, '\x25');
2444 emit_symbol_diff (acfg, "plt_jump_table", ".", -4);
2445 emit_zero_bytes (acfg, 10);
2447 g_assert_not_reached ();
2450 for (i = 1; i < acfg->plt_offset; ++i) {
2453 label = g_strdup_printf (".Lp_%d", i);
2454 emit_label (acfg, label);
2456 #if defined(__i386__)
2457 /* Need to make sure this is 5 bytes long */
2458 emit_byte (acfg, '\xe9');
2459 label = g_strdup_printf (".Lpd_%d", i);
2460 emit_symbol_diff (acfg, label, ".", -4);
2462 #elif defined(__x86_64__)
2464 * We can't emit jumps because they are 32 bits only so they can't be patched.
2465 * So we emit a jump table instead whose entries are patched by the AOT loader to
2466 * point to .Lpd entries. ELF stores these in the GOT too, but we don't, since
2467 * methods with GOT entries can't be called directly.
2468 * We also emit the default PLT code here since the PLT code will not be patched.
2469 * An x86_64 plt entry is 16 bytes long, init_plt () depends on this.
2471 /* jmpq *<offset>(%rip) */
2472 emit_byte (acfg, '\xff');
2473 emit_byte (acfg, '\x25');
2474 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)) -4);
2475 /* mov <plt info offset>, %eax */
2476 emit_byte (acfg, '\xb8');
2477 emit_int32 (acfg, plt_info_offsets [i]);
2479 emit_byte (acfg, '\xe9');
2480 emit_symbol_diff (acfg, ".Lp_0", ".", -4);
2482 g_assert_not_reached ();
2486 symbol = g_strdup_printf ("plt_end");
2487 emit_global (acfg, symbol, TRUE);
2488 emit_label (acfg, symbol);
2491 * Emit the default targets for the PLT entries separately since these will not
2492 * be modified at runtime.
2494 for (i = 1; i < acfg->plt_offset; ++i) {
2497 label = g_strdup_printf (".Lpd_%d", i);
2498 emit_label (acfg, label);
2501 /* Put the offset into the register expected by mono_aot_plt_trampoline */
2502 #if defined(__i386__)
2503 /* movl $const, %eax */
2504 emit_byte (acfg, '\xb8');
2505 emit_int32 (acfg, plt_info_offsets [i]);
2507 emit_byte (acfg, '\xe9');
2508 emit_symbol_diff (acfg, ".Lp_0", ".", -4);
2509 #elif defined(__x86_64__)
2510 /* Emitted along with the PLT entries since they will not be patched */
2512 g_assert_not_reached ();
2517 symbol = g_strdup_printf ("plt_info");
2518 emit_global (acfg, symbol, FALSE);
2519 emit_label (acfg, symbol);
2521 g_assert (p - buf < buf_size);
2522 emit_bytes (acfg, buf, p - buf);
2525 symbol = g_strdup_printf ("plt_jump_table_addr");
2526 emit_section_change (acfg, ".data", 0);
2527 emit_global (acfg, symbol, FALSE);
2528 emit_alignment (acfg, 8);
2529 emit_label (acfg, symbol);
2530 emit_pointer (acfg, "plt_jump_table");
2532 symbol = g_strdup_printf ("plt_jump_table_size");
2533 emit_section_change (acfg, ".data", 0);
2534 emit_global (acfg, symbol, FALSE);
2535 emit_alignment (acfg, 8);
2536 emit_label (acfg, symbol);
2537 emit_symbol_diff (acfg, "plt_jump_table_end", "plt_jump_table", 0);
2539 /* Don't make this a global so accesses don't need relocations */
2540 symbol = g_strdup_printf ("plt_jump_table");
2541 emit_section_change (acfg, ".bss", 0);
2542 emit_label (acfg, symbol);
2545 emit_zero_bytes (acfg, (int)(acfg->plt_offset * sizeof (gpointer)));
2548 symbol = g_strdup_printf ("plt_jump_table_end");
2549 emit_label (acfg, symbol);
2553 str_begins_with (const char *str1, const char *str2)
2555 int len = strlen (str2);
2556 return strncmp (str1, str2, len) == 0;
2560 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
2562 gchar **args, **ptr;
2564 memset (opts, 0, sizeof (*opts));
2566 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
2567 for (ptr = args; ptr && *ptr; ptr ++) {
2568 const char *arg = *ptr;
2570 if (str_begins_with (arg, "outfile=")) {
2571 opts->outfile = g_strdup (arg + strlen ("outfile="));
2572 } else if (str_begins_with (arg, "save-temps")) {
2573 opts->save_temps = TRUE;
2574 } else if (str_begins_with (arg, "keep-temps")) {
2575 opts->save_temps = TRUE;
2576 } else if (str_begins_with (arg, "write-symbols")) {
2577 opts->write_symbols = TRUE;
2578 } else if (str_begins_with (arg, "metadata-only")) {
2579 opts->metadata_only = TRUE;
2581 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
2588 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
2590 MonoMethod *method = (MonoMethod*)key;
2591 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
2592 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
2593 MonoAotCompile *acfg = user_data;
2595 new_ji->image = ji->image;
2596 new_ji->token = ji->token;
2597 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
2601 compile_method (MonoAotCompile *acfg, int index)
2605 MonoJumpInfo *patch_info;
2607 guint32 token = MONO_TOKEN_METHOD_DEF | (index + 1);
2610 if (acfg->aot_opts.metadata_only)
2613 method = mono_get_method (acfg->image, token, NULL);
2615 method_idx = mono_metadata_token_index (method->token);
2617 /* fixme: maybe we can also precompile wrapper methods */
2618 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2619 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2620 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2621 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
2622 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
2626 acfg->stats.mcount++;
2628 /* fixme: we need to patch the IP for the LMF in that case */
2629 if (method->save_lmf) {
2630 //printf ("Skip (needs lmf): %s\n", mono_method_full_name (method, TRUE));
2631 acfg->stats.lmfcount++;
2635 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
2637 * FIXME: Enabling this causes virtual-sync.exe to fail, since the trampoline
2638 * code can't determine that it needs to insert a sync wrapper in the AOT case.
2643 //acfg->opts &= ~MONO_OPT_GSHARED;
2645 if (!(acfg->opts & MONO_OPT_GSHARED)) {
2646 if (method->generic_container || method->klass->generic_container) {
2647 acfg->stats.genericcount ++;
2653 * Since these methods are the only ones which are compiled with
2654 * AOT support, and they are not used by runtime startup/shutdown code,
2655 * the runtime will not see AOT methods during AOT compilation,so it
2656 * does not need to support them by creating a fake GOT etc.
2658 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
2659 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
2660 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2661 acfg->stats.genericcount ++;
2664 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
2665 /* Let the exception happen at runtime */
2669 if (cfg->disable_aot) {
2670 //printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
2671 acfg->stats.ocount++;
2672 mono_destroy_compile (cfg);
2676 /* Collect method->token associations from the cfg */
2677 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
2680 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2681 switch (patch_info->type) {
2682 case MONO_PATCH_INFO_ABS:
2683 /* unable to handle this */
2684 //printf ("Skip (abs addr): %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
2693 acfg->stats.abscount++;
2694 mono_destroy_compile (cfg);
2699 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2700 if (patch_info->type == MONO_PATCH_INFO_METHOD_JUMP) {
2702 * FIXME: We can't handle this because mono_jit_compile_method_inner will try
2703 * to patch the AOT code when the target of the jump is compiled.
2711 acfg->stats.ocount++;
2712 mono_destroy_compile (cfg);
2716 /* some wrappers are very common */
2717 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2718 if (patch_info->type == MONO_PATCH_INFO_METHODCONST) {
2719 switch (patch_info->data.method->wrapper_type) {
2720 case MONO_WRAPPER_PROXY_ISINST:
2721 patch_info->type = MONO_PATCH_INFO_WRAPPER;
2725 if (patch_info->type == MONO_PATCH_INFO_METHOD) {
2726 switch (patch_info->data.method->wrapper_type) {
2727 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2728 case MONO_WRAPPER_STFLD:
2729 case MONO_WRAPPER_LDFLD:
2730 case MONO_WRAPPER_LDFLDA:
2731 case MONO_WRAPPER_LDFLD_REMOTE:
2732 case MONO_WRAPPER_STFLD_REMOTE:
2733 case MONO_WRAPPER_STELEMREF:
2734 case MONO_WRAPPER_ISINST:
2735 case MONO_WRAPPER_PROXY_ISINST:
2736 case MONO_WRAPPER_ALLOC:
2737 patch_info->type = MONO_PATCH_INFO_WRAPPER;
2744 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2745 switch (patch_info->type) {
2746 case MONO_PATCH_INFO_METHOD:
2747 case MONO_PATCH_INFO_METHODCONST:
2748 if (patch_info->data.method->wrapper_type) {
2749 /* unable to handle this */
2750 //printf ("Skip (wrapper call): %s %d -> %s\n", mono_method_full_name (method, TRUE), patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
2754 if (!patch_info->data.method->token)
2756 * The method is part of a constructed type like Int[,].Set (). It doesn't
2757 * have a token, and we can't make one, since the parent type is part of
2758 * assembly which contains the element type, and not the assembly which
2759 * referenced this type.
2763 case MONO_PATCH_INFO_VTABLE:
2764 case MONO_PATCH_INFO_CLASS_INIT:
2765 case MONO_PATCH_INFO_CLASS:
2766 case MONO_PATCH_INFO_IID:
2767 case MONO_PATCH_INFO_ADJUSTED_IID:
2768 if (!patch_info->data.klass->type_token)
2769 if (!patch_info->data.klass->element_class->type_token && !(patch_info->data.klass->element_class->rank && patch_info->data.klass->element_class->element_class->type_token))
2778 acfg->stats.wrappercount++;
2779 mono_destroy_compile (cfg);
2783 /* Determine whenever the method has GOT slots */
2784 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2785 switch (patch_info->type) {
2786 case MONO_PATCH_INFO_LABEL:
2787 case MONO_PATCH_INFO_BB:
2788 case MONO_PATCH_INFO_GOT_OFFSET:
2789 case MONO_PATCH_INFO_NONE:
2790 case MONO_PATCH_INFO_METHOD:
2791 case MONO_PATCH_INFO_INTERNAL_METHOD:
2792 case MONO_PATCH_INFO_WRAPPER:
2794 case MONO_PATCH_INFO_IMAGE:
2795 if (patch_info->data.image == acfg->image)
2796 /* Stored in GOT slot 0 */
2800 acfg->has_got_slots [method_idx] = TRUE;
2805 if (!acfg->has_got_slots [method_idx])
2806 acfg->stats.methods_without_got_slots ++;
2808 /* Make a copy of the patch info which is in the mempool */
2810 MonoJumpInfo *patches = NULL, *patches_end = NULL;
2812 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2813 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
2816 patches = new_patch_info;
2818 patches_end->next = new_patch_info;
2819 patches_end = new_patch_info;
2821 cfg->patch_info = patches;
2824 /* Free some fields used by cfg to conserve memory */
2825 mono_mempool_destroy (cfg->mempool);
2826 cfg->mempool = NULL;
2827 g_free (cfg->varinfo);
2828 cfg->varinfo = NULL;
2832 mono_regstate_free (cfg->rs);
2836 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
2838 acfg->cfgs [index] = cfg;
2840 g_hash_table_insert (acfg->method_to_cfg, cfg->method, cfg);
2842 acfg->stats.ccount++;
2846 load_profile_files (MonoAotCompile *acfg)
2850 int file_index, res, method_index, i;
2857 tmp = g_strdup_printf ("%s/.mono/aot-profile-data/%s-%s-%d", g_get_home_dir (), acfg->image->assembly_name, acfg->image->guid, file_index);
2859 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR))
2862 infile = fopen (tmp, "r");
2865 printf ("Using profile data file '%s'\n", tmp);
2869 res = fscanf (infile, "%32s\n", ver);
2870 if ((res != 1) || strcmp (ver, "#VER:1") != 0) {
2871 printf ("Profile file has wrong version or invalid.\n");
2877 res = fscanf (infile, "%d\n", &token);
2881 method_index = mono_metadata_token_index (token) - 1;
2883 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index)))
2884 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
2889 /* Add missing methods */
2891 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2892 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
2893 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (i));
2895 unordered = g_list_reverse (unordered);
2896 if (acfg->method_order)
2897 g_list_last (acfg->method_order)->next = unordered;
2899 acfg->method_order = unordered;
2905 * Collect all patches which have shared GOT entries and alloc entries for them. The
2906 * rest will get entries allocated during emit_code ().
2909 alloc_got_slots (MonoAotCompile *acfg)
2915 /* Slot 0 is reserved for the address of the current assembly */
2916 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
2917 ji->type = MONO_PATCH_INFO_IMAGE;
2918 ji->data.image = acfg->image;
2920 get_shared_got_offset (acfg, ji);
2922 for (l = acfg->method_order; l != NULL; l = l->next) {
2923 i = GPOINTER_TO_UINT (l->data);
2925 if (acfg->cfgs [i]) {
2926 MonoCompile *cfg = acfg->cfgs [i];
2928 for (ji = cfg->patch_info; ji; ji = ji->next) {
2930 case MONO_PATCH_INFO_VTABLE:
2931 case MONO_PATCH_INFO_CLASS:
2932 case MONO_PATCH_INFO_IID:
2933 case MONO_PATCH_INFO_ADJUSTED_IID:
2934 case MONO_PATCH_INFO_FIELD:
2935 case MONO_PATCH_INFO_SFLDA:
2936 case MONO_PATCH_INFO_DECLSEC:
2937 case MONO_PATCH_INFO_LDTOKEN:
2938 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2939 case MONO_PATCH_INFO_RVA:
2940 get_shared_got_offset (acfg, ji);
2951 emit_code (MonoAotCompile *acfg)
2957 symbol = g_strdup_printf ("methods");
2958 emit_section_change (acfg, ".text", 0);
2959 emit_global (acfg, symbol, TRUE);
2960 emit_alignment (acfg, 8);
2961 emit_label (acfg, symbol);
2963 for (l = acfg->method_order; l != NULL; l = l->next) {
2964 i = GPOINTER_TO_UINT (l->data);
2967 emit_method_code (acfg, acfg->cfgs [i]);
2970 symbol = g_strdup_printf ("methods_end");
2971 emit_section_change (acfg, ".text", 0);
2972 emit_global (acfg, symbol, FALSE);
2973 emit_alignment (acfg, 8);
2974 emit_label (acfg, symbol);
2976 symbol = g_strdup_printf ("method_offsets");
2977 emit_section_change (acfg, ".text", 1);
2978 emit_global (acfg, symbol, FALSE);
2979 emit_alignment (acfg, 8);
2980 emit_label (acfg, symbol);
2982 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2983 if (acfg->cfgs [i]) {
2984 symbol = g_strdup_printf (".Lm_%x", i + 1);
2985 emit_symbol_diff (acfg, symbol, "methods", 0);
2987 emit_int32 (acfg, 0xffffffff);
2994 emit_info (MonoAotCompile *acfg)
3000 /* Emit method info */
3001 symbol = g_strdup_printf ("method_info");
3002 emit_section_change (acfg, ".text", 1);
3003 emit_global (acfg, symbol, FALSE);
3004 emit_alignment (acfg, 8);
3005 emit_label (acfg, symbol);
3007 /* To reduce size of generated assembly code */
3008 symbol = g_strdup_printf ("mi");
3009 emit_label (acfg, symbol);
3011 for (l = acfg->method_order; l != NULL; l = l->next) {
3012 i = GPOINTER_TO_UINT (l->data);
3015 emit_method_info (acfg, acfg->cfgs [i]);
3018 symbol = g_strdup_printf ("method_info_offsets");
3019 emit_section_change (acfg, ".text", 1);
3020 emit_global (acfg, symbol, FALSE);
3021 emit_alignment (acfg, 8);
3022 emit_label (acfg, symbol);
3024 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3025 if (acfg->cfgs [i]) {
3026 symbol = g_strdup_printf (".Lm_%x_p", i + 1);
3027 emit_symbol_diff (acfg, symbol, "mi", 0);
3029 emit_int32 (acfg, 0);
3036 emit_method_order (MonoAotCompile *acfg)
3042 symbol = g_strdup_printf ("method_order");
3043 emit_section_change (acfg, ".text", 1);
3044 emit_global (acfg, symbol, FALSE);
3045 emit_alignment (acfg, 8);
3046 emit_label (acfg, symbol);
3048 /* First emit an index table */
3051 for (l = acfg->method_order; l != NULL; l = l->next) {
3052 i = GPOINTER_TO_UINT (l->data);
3054 if (acfg->cfgs [i]) {
3055 if ((index % 1024) == 0) {
3056 emit_int32 (acfg, i);
3064 emit_int32 (acfg, 0xffffff);
3066 /* Then emit the whole method order */
3067 for (l = acfg->method_order; l != NULL; l = l->next) {
3068 i = GPOINTER_TO_UINT (l->data);
3070 if (acfg->cfgs [i]) {
3071 emit_int32 (acfg, i);
3076 symbol = g_strdup_printf ("method_order_end");
3077 emit_section_change (acfg, ".text", 1);
3078 emit_global (acfg, symbol, FALSE);
3079 emit_label (acfg, symbol);
3083 emit_exception_info (MonoAotCompile *acfg)
3088 symbol = g_strdup_printf ("ex_info");
3089 emit_section_change (acfg, ".text", 1);
3090 emit_global (acfg, symbol, FALSE);
3091 emit_alignment (acfg, 8);
3092 emit_label (acfg, symbol);
3094 /* To reduce size of generate assembly */
3095 symbol = g_strdup_printf ("ex");
3096 emit_label (acfg, symbol);
3098 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3100 emit_exception_debug_info (acfg, acfg->cfgs [i]);
3103 symbol = g_strdup_printf ("ex_info_offsets");
3104 emit_section_change (acfg, ".text", 1);
3105 emit_global (acfg, symbol, FALSE);
3106 emit_alignment (acfg, 8);
3107 emit_label (acfg, symbol);
3109 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3110 if (acfg->cfgs [i]) {
3111 symbol = g_strdup_printf (".Le_%x_p", i + 1);
3112 emit_symbol_diff (acfg, symbol, "ex", 0);
3114 emit_int32 (acfg, 0);
3121 emit_class_info (MonoAotCompile *acfg)
3126 symbol = g_strdup_printf ("class_info");
3127 emit_section_change (acfg, ".text", 1);
3128 emit_global (acfg, symbol, FALSE);
3129 emit_alignment (acfg, 8);
3130 emit_label (acfg, symbol);
3132 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
3133 emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
3135 symbol = g_strdup_printf ("class_info_offsets");
3136 emit_section_change (acfg, ".text", 1);
3137 emit_global (acfg, symbol, FALSE);
3138 emit_alignment (acfg, 8);
3139 emit_label (acfg, symbol);
3141 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3142 symbol = g_strdup_printf (".LK_I_%x", i);
3143 emit_symbol_diff (acfg, symbol, "class_info", 0);
3148 typedef struct ClassNameTableEntry {
3149 guint32 token, index;
3150 struct ClassNameTableEntry *next;
3151 } ClassNameTableEntry;
3154 emit_class_name_table (MonoAotCompile *acfg)
3157 guint32 token, hash;
3162 ClassNameTableEntry *entry, *new_entry;
3165 * Construct a chained hash table for mapping class names to typedef tokens.
3167 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
3168 table = g_ptr_array_sized_new (table_size);
3169 for (i = 0; i < table_size; ++i)
3170 g_ptr_array_add (table, NULL);
3171 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3172 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3173 klass = mono_class_get (acfg->image, token);
3174 full_name = mono_type_get_full_name (klass);
3175 hash = g_str_hash (full_name) % table_size;
3177 //printf ("A: '%s' %d %d\n", full_name, g_str_hash (full_name), hash);
3179 /* FIXME: Allocate from the mempool */
3180 new_entry = g_new0 (ClassNameTableEntry, 1);
3181 new_entry->token = token;
3183 entry = g_ptr_array_index (table, hash);
3184 if (entry == NULL) {
3185 new_entry->index = hash;
3186 g_ptr_array_index (table, hash) = new_entry;
3189 entry = entry->next;
3191 entry->next = new_entry;
3192 new_entry->index = table->len;
3193 g_ptr_array_add (table, new_entry);
3197 /* Emit the table */
3198 symbol = g_strdup_printf ("class_name_table");
3199 emit_section_change (acfg, ".text", 0);
3200 emit_global (acfg, symbol, FALSE);
3201 emit_alignment (acfg, 8);
3202 emit_label (acfg, symbol);
3204 /* FIXME: Optimize memory usage */
3205 g_assert (table_size < 65000);
3206 emit_int16 (acfg, table_size);
3207 g_assert (table->len < 65000);
3208 for (i = 0; i < table->len; ++i) {
3209 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
3211 if (entry == NULL) {
3212 emit_int16 (acfg, 0);
3213 emit_int16 (acfg, 0);
3215 emit_int16 (acfg, mono_metadata_token_index (entry->token));
3217 emit_int16 (acfg, entry->next->index);
3219 emit_int16 (acfg, 0);
3225 emit_image_table (MonoAotCompile *acfg)
3231 * The image table is small but referenced in a lot of places.
3232 * So we emit it at once, and reference its elements by an index.
3235 symbol = g_strdup_printf ("mono_image_table");
3236 emit_section_change (acfg, ".text", 1);
3237 emit_global (acfg, symbol, FALSE);
3238 emit_alignment (acfg, 8);
3239 emit_label (acfg, symbol);
3240 emit_int32 (acfg, acfg->image_table->len);
3241 for (i = 0; i < acfg->image_table->len; i++) {
3242 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
3243 MonoAssemblyName *aname = &image->assembly->aname;
3245 /* FIXME: Support multi-module assemblies */
3246 g_assert (image->assembly->image == image);
3248 emit_string (acfg, image->assembly_name);
3249 emit_string (acfg, image->guid);
3250 emit_string (acfg, aname->culture ? aname->culture : "");
3251 emit_string (acfg, (const char*)aname->public_key_token);
3253 emit_alignment (acfg, 8);
3254 emit_int32 (acfg, aname->flags);
3255 emit_int32 (acfg, aname->major);
3256 emit_int32 (acfg, aname->minor);
3257 emit_int32 (acfg, aname->build);
3258 emit_int32 (acfg, aname->revision);
3263 emit_got_info (MonoAotCompile *acfg)
3268 guint32 *got_info_offsets;
3272 * - optimize offsets table.
3273 * - reduce number of exported symbols.
3274 * - emit info for a klass only once.
3275 * - determine when a method uses a GOT slot which is guaranteed to be already
3277 * - clean up and document the code.
3278 * - use String.Empty in class libs.
3281 /* Encode info required to decode shared GOT entries */
3282 buf_size = acfg->shared_patches->len * 64;
3283 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
3284 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->shared_patches->len * sizeof (guint32));
3285 for (i = 0; i < acfg->shared_patches->len; ++i) {
3286 MonoJumpInfo *ji = g_ptr_array_index (acfg->shared_patches, i);
3288 /* No need to encode the patch type */
3289 got_info_offsets [i] = p - buf;
3290 encode_patch (acfg, ji, p, &p, FALSE);
3293 g_assert (p - buf <= buf_size);
3295 acfg->stats.got_info_size = p - buf;
3297 /* Emit got_info table */
3298 symbol = g_strdup_printf ("got_info");
3299 emit_section_change (acfg, ".text", 1);
3300 emit_global (acfg, symbol, FALSE);
3301 emit_alignment (acfg, 8);
3302 emit_label (acfg, symbol);
3304 emit_bytes (acfg, buf, p - buf);
3306 /* Emit got_info_offsets table */
3307 symbol = g_strdup_printf ("got_info_offsets");
3308 emit_section_change (acfg, ".text", 1);
3309 emit_global (acfg, symbol, FALSE);
3310 emit_alignment (acfg, 8);
3311 emit_label (acfg, symbol);
3313 for (i = 0; i < acfg->shared_patches->len; ++i)
3314 emit_int32 (acfg, got_info_offsets [i]);
3316 acfg->stats.got_info_offsets_size = acfg->shared_patches->len * 4;
3320 emit_got (MonoAotCompile *acfg)
3324 /* Don't make GOT global so accesses to it don't need relocations */
3325 symbol = g_strdup_printf ("got");
3326 emit_section_change (acfg, ".bss", 1);
3327 emit_alignment (acfg, 8);
3328 emit_label (acfg, symbol);
3329 if (acfg->got_offset > 0)
3330 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
3332 symbol = g_strdup_printf ("got_addr");
3333 emit_section_change (acfg, ".data", 1);
3334 emit_global (acfg, symbol, FALSE);
3335 emit_alignment (acfg, 8);
3336 emit_label (acfg, symbol);
3337 emit_pointer (acfg, "got");
3339 symbol = g_strdup_printf ("got_size");
3340 emit_section_change (acfg, ".data", 1);
3341 emit_global (acfg, symbol, FALSE);
3342 emit_alignment (acfg, 8);
3343 emit_label (acfg, symbol);
3344 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
3348 emit_globals (MonoAotCompile *acfg)
3352 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
3354 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
3356 opts_str = g_strdup_printf ("%d", acfg->opts);
3357 emit_string_symbol (acfg, "mono_aot_opt_flags", opts_str);
3362 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
3364 MonoImage *image = ass->image;
3367 MonoAotCompile *acfg;
3370 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
3372 acfg = g_new0 (MonoAotCompile, 1);
3373 acfg->plt_offset_to_patch = g_hash_table_new (NULL, NULL);
3374 acfg->patch_to_plt_offset = g_hash_table_new (NULL, NULL);
3375 acfg->patch_to_plt_offset_wrapper = g_malloc0 (sizeof (GHashTable*) * 128);
3376 acfg->patch_to_shared_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
3377 acfg->shared_patches = g_ptr_array_new ();
3378 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
3379 acfg->token_info_hash = g_hash_table_new (NULL, NULL);
3380 acfg->image_hash = g_hash_table_new (NULL, NULL);
3381 acfg->image_table = g_ptr_array_new ();
3382 acfg->image = image;
3384 acfg->mempool = mono_mempool_new ();
3386 mono_aot_parse_options (aot_options, &acfg->aot_opts);
3388 load_profile_files (acfg);
3392 cfgs = g_new0 (MonoCompile*, image->tables [MONO_TABLE_METHOD].rows + 32);
3394 acfg->nmethods = image->tables [MONO_TABLE_METHOD].rows;
3395 acfg->method_got_offsets = g_new0 (guint32, image->tables [MONO_TABLE_METHOD].rows + 32);
3396 acfg->has_got_slots = g_new0 (gboolean, image->tables [MONO_TABLE_METHOD].rows + 32);
3398 /* PLT offset 0 is reserved for the PLT trampoline */
3399 acfg->plt_offset = 1;
3401 /* Compile methods */
3402 for (i = 0; i < acfg->nmethods; ++i)
3403 compile_method (acfg, i);
3405 alloc_got_slots (acfg);
3411 emit_method_order (acfg);
3413 emit_class_name_table (acfg);
3415 emit_got_info (acfg);
3417 emit_exception_info (acfg);
3419 emit_class_info (acfg);
3423 emit_image_table (acfg);
3427 emit_globals (acfg);
3429 symbol = g_strdup_printf ("mem_end");
3430 emit_section_change (acfg, ".text", 1);
3431 emit_global (acfg, symbol, FALSE);
3432 emit_alignment (acfg, 8);
3433 emit_label (acfg, symbol);
3435 printf ("Code: %d Info: %d Ex Info: %d Class Info: %d PLT: %d GOT Info: %d GOT Info Offsets: %d GOT: %d\n", acfg->stats.code_size, acfg->stats.info_size, acfg->stats.ex_info_size, acfg->stats.class_info_size, acfg->plt_offset, acfg->stats.got_info_size, acfg->stats.got_info_offsets_size, (int)(acfg->got_offset * sizeof (gpointer)));
3437 emit_writeout (acfg);
3439 printf ("Compiled %d out of %d methods (%d%%)\n", acfg->stats.ccount, acfg->stats.mcount, acfg->stats.mcount ? (acfg->stats.ccount * 100) / acfg->stats.mcount : 100);
3440 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
3441 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
3442 printf ("%d methods contain wrapper references (%d%%)\n", acfg->stats.wrappercount, acfg->stats.mcount ? (acfg->stats.wrappercount * 100) / acfg->stats.mcount : 100);
3443 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
3444 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
3445 printf ("Methods without GOT slots: %d (%d%%)\n", acfg->stats.methods_without_got_slots, acfg->stats.mcount ? (acfg->stats.methods_without_got_slots * 100) / acfg->stats.mcount : 100);
3446 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
3448 printf ("GOT slot distribution:\n");
3449 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
3450 if (acfg->stats.got_slot_types [i])
3451 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
3461 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)