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/utils/mono-logger.h>
42 #include "mono/utils/mono-compiler.h"
49 #define SHARED_EXT ".dll"
50 #elif defined(__ppc__) && defined(__MACH__)
51 #define SHARED_EXT ".dylib"
53 #define SHARED_EXT ".so"
56 #if defined(sparc) || defined(__ppc__)
57 #define AS_STRING_DIRECTIVE ".asciz"
60 #define AS_STRING_DIRECTIVE ".string"
63 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
64 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
66 typedef struct MonoAotOptions {
69 gboolean write_symbols;
70 gboolean metadata_only;
73 typedef struct MonoAotStats {
74 int ccount, mcount, lmfcount, abscount, wrappercount, gcount, ocount, genericcount;
75 int code_size, info_size, ex_info_size, got_size, class_info_size, got_info_size, got_info_offsets_size;
76 int methods_without_got_slots, direct_calls, all_calls;
78 int got_slot_types [MONO_PATCH_INFO_NONE];
81 /*#define USE_ELF_WRITER 1*/
83 #if defined(USE_ELF_WRITER)
84 #define USE_BIN_WRITER 1
89 typedef struct _BinSymbol BinSymbol;
90 typedef struct _BinReloc BinReloc;
91 typedef struct _BinSection BinSection;
105 typedef struct MonoAotCompile {
108 GHashTable *patch_to_plt_offset;
109 GHashTable *plt_offset_to_patch;
110 GHashTable *patch_to_shared_got_offset;
111 GPtrArray *shared_patches;
112 GHashTable *image_hash;
113 GHashTable *method_to_cfg;
114 GHashTable *token_info_hash;
115 GPtrArray *image_table;
117 guint32 got_offset, plt_offset;
118 guint32 *method_got_offsets;
119 gboolean *has_got_slots;
120 MonoAotOptions aot_opts;
123 MonoMemPool *mempool;
125 #ifdef USE_BIN_WRITER
127 BinSection *sections;
128 BinSection *cur_section;
129 BinReloc *relocations;
135 int mode; /* emit mode */
136 int col_count; /* bytes emitted per .byte line */
140 #ifdef HAVE_ARRAY_ELEM_INIT
141 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
142 #define MSGSTRFIELD1(line) str##line
143 static const struct msgstr_t {
144 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
145 #include "patch-info.h"
148 #define PATCH_INFO(a,b) b,
149 #include "patch-info.h"
152 static const gint16 opidx [] = {
153 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
154 #include "patch-info.h"
159 get_patch_name (int info)
161 return (const char*)&opstr + opidx [info];
165 #define PATCH_INFO(a,b) b,
166 static const char* const
167 patch_types [MONO_PATCH_INFO_NUM + 1] = {
168 #include "patch-info.h"
173 get_patch_name (int info)
175 return patch_types [info];
181 is_got_patch (MonoJumpInfoType patch_type)
185 #elif defined(__i386__)
192 #if defined(__ppc__) && defined(__MACH__)
194 ilog2(register int value)
197 while (value & ~0xf) count += 4, value >>= 4;
198 while (value) count++, value >>= 1;
203 #ifdef USE_BIN_WRITER
205 typedef struct _BinLabel BinLabel;
216 BinSection *val2_section;
228 gboolean is_function;
246 emit_start (MonoAotCompile *acfg)
248 acfg->labels = g_hash_table_new (g_str_hash, g_str_equal);
252 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
256 if (acfg->cur_section && acfg->cur_section->subsection == subsection_index
257 && strcmp (acfg->cur_section->name, section_name) == 0)
259 for (section = acfg->sections; section; section = section->next) {
260 if (section->subsection == subsection_index && strcmp (section->name, section_name) == 0) {
261 acfg->cur_section = section;
266 section = g_new0 (BinSection, 1);
267 section->name = g_strdup (section_name);
268 section->subsection = subsection_index;
269 section->next = acfg->sections;
270 acfg->sections = section;
271 acfg->cur_section = section;
276 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
278 BinSymbol *symbol = g_new0 (BinSymbol, 1);
279 symbol->name = g_strdup (name);
280 symbol->is_function = func;
281 symbol->is_global = TRUE;
282 symbol->section = acfg->cur_section;
283 /* FIXME: we align after this call... */
284 symbol->offset = symbol->section->cur_offset;
285 symbol->next = acfg->symbols;
286 acfg->symbols = symbol;
290 emit_label (MonoAotCompile *acfg, const char *name)
292 BinLabel *label = g_new0 (BinLabel, 1);
293 label->name = g_strdup (name);
294 label->section = acfg->cur_section;
295 label->offset = acfg->cur_section->cur_offset;
296 g_hash_table_insert (acfg->labels, label->name, label);
300 emit_ensure_buffer (BinSection *section, int size)
302 int new_offset = section->cur_offset + size;
303 if (new_offset >= section->data_len) {
304 int new_size = section->data_len? section->data_len * 2: 256;
306 while (new_size <= new_offset)
308 data = g_malloc0 (new_size);
309 memcpy (data, section->data, section->data_len);
310 g_free (section->data);
311 section->data = data;
312 section->data_len = new_size;
317 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
319 emit_ensure_buffer (acfg->cur_section, size);
320 memcpy (acfg->cur_section->data + acfg->cur_section->cur_offset, buf, size);
321 acfg->cur_section->cur_offset += size;
325 emit_string (MonoAotCompile *acfg, const char *value)
327 int size = strlen (value) + 1;
328 emit_bytes (acfg, (const guint8*)value, size);
332 emit_line (MonoAotCompile *acfg)
334 /* Nothing to do in binary writer */
338 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
340 emit_section_change (acfg, ".text", 1);
341 emit_global (acfg, name, FALSE);
342 emit_label (acfg, name);
343 emit_string (acfg, value);
347 emit_alignment (MonoAotCompile *acfg, int size)
349 int offset = acfg->cur_section->cur_offset;
351 offset += (size - 1);
352 offset &= ~(size - 1);
353 add = offset - acfg->cur_section->cur_offset;
355 emit_ensure_buffer (acfg->cur_section, add);
356 acfg->cur_section->cur_offset += add;
361 emit_pointer (MonoAotCompile *acfg, const char *target)
364 emit_alignment (acfg, sizeof (gpointer));
365 reloc = g_new0 (BinReloc, 1);
366 reloc->val1 = g_strdup (target);
367 reloc->section = acfg->cur_section;
368 reloc->section_offset = acfg->cur_section->cur_offset;
369 reloc->next = acfg->relocations;
370 acfg->relocations = reloc;
371 if (strcmp (reloc->section->name, ".data") == 0) {
373 g_print ("reloc: %s at %d\n", target, acfg->cur_section->cur_offset);
375 acfg->cur_section->cur_offset += sizeof (gpointer);
379 emit_int16 (MonoAotCompile *acfg, int value)
382 emit_ensure_buffer (acfg->cur_section, 2);
383 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
384 acfg->cur_section->cur_offset += 2;
385 /* FIXME: little endian */
387 data [1] = value >> 8;
391 emit_int32 (MonoAotCompile *acfg, int value)
394 emit_ensure_buffer (acfg->cur_section, 4);
395 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
396 acfg->cur_section->cur_offset += 4;
397 /* FIXME: little endian */
399 data [1] = value >> 8;
400 data [2] = value >> 16;
401 data [3] = value >> 24;
405 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
408 reloc = g_new0 (BinReloc, 1);
409 reloc->val1 = g_strdup (end);
410 if (strcmp (start, ".") == 0) {
411 reloc->val2_section = acfg->cur_section;
412 reloc->val2_offset = acfg->cur_section->cur_offset;
414 reloc->val2 = g_strdup (start);
416 reloc->offset = offset;
417 reloc->section = acfg->cur_section;
418 reloc->section_offset = acfg->cur_section->cur_offset;
419 reloc->next = acfg->relocations;
420 acfg->relocations = reloc;
421 acfg->cur_section->cur_offset += 4;
422 /*if (strcmp (reloc->section->name, ".data") == 0) {
424 g_print ("reloc: %s - %s + %d at %d\n", end, start, offset, acfg->cur_section->cur_offset - 4);
429 emit_zero_bytes (MonoAotCompile *acfg, int num)
431 emit_ensure_buffer (acfg->cur_section, num);
432 acfg->cur_section->cur_offset += num;
435 #ifdef USE_ELF_WRITER
470 DYN_RELCOUNT = 0x6ffffffa
473 static const char* section_names [] = {
489 static const guint8 section_type [] = {
494 static const guint8 section_link [] = {
495 0, 2, 3, 0, 2, 0, 3, 0, 0, 0, 0, 12, 0
498 static const guint8 section_esize [] = {
499 0, 4, 16, 0, 8, 0, 8, 4, 0, 0, 0, 16, 0
502 static const guint8 section_flags [] = {
503 0, 2, 2, 2, 2, 6, 3, 3, 3, 3, 0, 0, 0
506 static const guint16 section_align [] = {
507 0, 4, 4, 1, 4, 4096, 4, 4, 8, 8, 1, 4, 1
527 struct ElfSectHeader {
540 #if SIZEOF_VOID_P == 4
542 struct ElfProgHeader {
574 struct ElfProgHeader {
618 str_table_add (ElfStrTable *table, const char* value)
622 table->data = g_string_new_len ("", 1);
623 table->hash = g_hash_table_new (g_str_hash, g_str_equal);
625 idx = GPOINTER_TO_UINT (g_hash_table_lookup (table->hash, value));
628 idx = table->data->len;
629 g_string_append (table->data, value);
630 g_string_append_c (table->data, 0);
631 g_hash_table_insert (table->hash, (void*)value, GUINT_TO_POINTER (idx));
636 append_subsection (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection *sect, BinSection *add)
638 int offset = sect->cur_offset;
639 /*offset += (sheaders [sect->shidx].sh_addralign - 1);
640 offset &= ~(sheaders [sect->shidx].sh_addralign - 1);*/
643 emit_ensure_buffer (sect, offset);
644 g_print ("section %s aligned to %d from %d\n", sect->name, offset, sect->cur_offset);
645 sect->cur_offset = offset;
647 emit_ensure_buffer (sect, add->cur_offset);
648 memcpy (sect->data + sect->cur_offset, add->data, add->cur_offset);
650 sect->cur_offset += add->cur_offset;
651 add->cur_offset = offset; /* it becomes the offset in the parent section */
652 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);
657 /* merge the subsections */
659 collect_sections (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection **out, int num)
661 int i, j, maxs, num_sections;
666 for (sect = acfg->sections; sect; sect = sect->next) {
667 if (sect->subsection == 0) {
668 out [num_sections++] = sect;
669 g_assert (num_sections < num);
670 if (strcmp (sect->name, ".text") == 0) {
671 sect->shidx = SECT_TEXT;
672 } else if (strcmp (sect->name, ".data") == 0) {
673 sect->shidx = SECT_DATA;
674 } else if (strcmp (sect->name, ".bss") == 0) {
675 sect->shidx = SECT_BSS;
678 maxs = MAX (maxs, sect->subsection);
680 for (i = 0; i < num_sections; i++) {
681 for (j = 1; j <= maxs; ++j) {
682 for (sect = acfg->sections; sect; sect = sect->next) {
683 if (sect->subsection == j && strcmp (out [i]->name, sect->name) == 0) {
684 append_subsection (acfg, sheaders, out [i], sect);
693 elf_hash (const unsigned char *name)
695 unsigned long h = 0, g;
697 h = (h << 4) + *name++;
698 if ((g = h & 0xf0000000))
705 #define NUM_BUCKETS 17
708 build_hash (MonoAotCompile *acfg, int num_sections, ElfStrTable *dynstr)
711 int num_symbols = 1 + num_sections + 3;
714 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
715 if (!symbol->is_global)
718 str_table_add (dynstr, symbol->name);
719 /*g_print ("adding sym: %s\n", symbol->name);*/
721 str_table_add (dynstr, "__bss_start");
722 str_table_add (dynstr, "_edata");
723 str_table_add (dynstr, "_end");
725 data = g_new0 (int, num_symbols + 2 + NUM_BUCKETS);
726 data [0] = NUM_BUCKETS;
727 data [1] = num_symbols;
733 get_label_addr (MonoAotCompile *acfg, const char *name)
740 lab = g_hash_table_lookup (acfg->labels, name);
741 section = lab->section;
742 offset = lab->offset;
743 if (section->parent) {
744 value = section->parent->file_offset + section->cur_offset + offset;
746 value = section->file_offset + offset;
752 collect_syms (MonoAotCompile *acfg, int *hash, ElfStrTable *strtab, struct ElfSectHeader *sheaders, int *num_syms)
763 symbols = g_new0 (ElfSymbol, hash [1]);
765 symbols = g_new0 (ElfSymbol, *num_syms + SECT_NUM + 10); /* FIXME */
767 /* the first symbol is undef, all zeroes */
771 for (j = 1; j < SECT_NUM; ++j) {
772 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
773 symbols [i].st_shndx = j;
774 symbols [i].st_value = sheaders [j].sh_addr;
778 for (section = acfg->sections; section; section = section->next) {
781 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
782 if (strcmp (section->name, ".text") == 0) {
783 symbols [i].st_shndx = SECT_TEXT;
784 section->shidx = SECT_TEXT;
785 section->file_offset = 4096;
786 symbols [i].st_value = section->file_offset;
787 } else if (strcmp (section->name, ".data") == 0) {
788 symbols [i].st_shndx = SECT_DATA;
789 section->shidx = SECT_DATA;
790 section->file_offset = 4096 + 28; /* FIXME */
791 symbols [i].st_value = section->file_offset;
792 } else if (strcmp (section->name, ".bss") == 0) {
793 symbols [i].st_shndx = SECT_BSS;
794 section->shidx = SECT_BSS;
795 section->file_offset = 4096 + 28 + 8; /* FIXME */
796 symbols [i].st_value = section->file_offset;
801 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
804 if (!symbol->is_global)
806 symbols [i].st_info = (symbol->is_function? SYM_FUNC : SYM_OBJECT) | SYM_GLOBAL;
807 symbols [i].st_name = str_table_add (strtab, symbol->name);
808 /*g_print ("sym name %s tabled to %d\n", symbol->name, symbols [i].st_name);*/
809 section = symbol->section;
810 symbols [i].st_shndx = section->parent? section->parent->shidx: section->shidx;
811 lab = g_hash_table_lookup (acfg->labels, symbol->name);
812 offset = lab->offset;
813 if (section->parent) {
814 symbols [i].st_value = section->parent->file_offset + section->cur_offset + offset;
816 symbols [i].st_value = section->file_offset + offset;
820 /* add special symbols */
821 symbols [i].st_name = str_table_add (strtab, "__bss_start");
822 symbols [i].st_shndx = 0xfff1;
823 symbols [i].st_info = SYM_GLOBAL;
825 symbols [i].st_name = str_table_add (strtab, "_edata");
826 symbols [i].st_shndx = 0xfff1;
827 symbols [i].st_info = SYM_GLOBAL;
829 symbols [i].st_name = str_table_add (strtab, "_end");
830 symbols [i].st_shndx = 0xfff1;
831 symbols [i].st_info = SYM_GLOBAL;
837 /* add to hash table */
840 chain = hash + 2 + hash [0];
841 for (i = 0; i < hash [1]; ++i) {
843 /*g_print ("checking %d '%s' (sym %d)\n", symbols [i].st_name, strtab->data->str + symbols [i].st_name, i);*/
844 if (!symbols [i].st_name)
846 hashc = elf_hash ((guint8*)strtab->data->str + symbols [i].st_name);
847 slot = hashc % hash [0];
848 /*g_print ("hashing '%s' at slot %d (sym %d)\n", strtab->data->str + symbols [i].st_name, slot, i);*/
850 chain [i] = bucket [slot];
861 reloc_symbols (MonoAotCompile *acfg, ElfSymbol *symbols, struct ElfSectHeader *sheaders, ElfStrTable *strtab, gboolean dynamic)
869 for (section = acfg->sections; section; section = section->next) {
872 symbols [i].st_value = sheaders [section->shidx].sh_addr;
876 for (i = 1; i < SECT_NUM; ++i) {
877 symbols [i].st_value = sheaders [i].sh_addr;
880 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
883 if (dynamic && !symbol->is_global)
885 section = symbol->section;
886 lab = g_hash_table_lookup (acfg->labels, symbol->name);
887 offset = lab->offset;
888 if (section->parent) {
889 symbols [i].st_value = sheaders [section->parent->shidx].sh_addr + section->cur_offset + offset;
891 symbols [i].st_value = sheaders [section->shidx].sh_addr + offset;
896 symbols [i].st_value = sheaders [SECT_BSS].sh_addr;
899 symbols [i].st_value = sheaders [SECT_DATA].sh_addr + sheaders [SECT_DATA].sh_size;
902 symbols [i].st_value = sheaders [SECT_BSS].sh_addr + sheaders [SECT_BSS].sh_size;
907 resolve_relocations (MonoAotCompile *acfg)
911 gsize end_val, start_val;
916 rr = g_new0 (ElfReloc, acfg->num_relocs);
919 for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
920 end_val = get_label_addr (acfg, reloc->val1);
922 start_val = get_label_addr (acfg, reloc->val2);
923 } else if (reloc->val2_section) {
924 start_val = reloc->val2_offset;
925 if (reloc->val2_section->parent)
926 start_val += reloc->val2_section->parent->file_offset + reloc->val2_section->cur_offset;
928 start_val += reloc->val2_section->file_offset;
932 end_val = end_val - start_val + reloc->offset;
933 if (reloc->section->parent) {
934 data = reloc->section->parent->data;
935 data += reloc->section->cur_offset;
936 data += reloc->section_offset;
937 vaddr = reloc->section->parent->file_offset;
938 vaddr += reloc->section->cur_offset;
939 vaddr += reloc->section_offset;
941 data = reloc->section->data;
942 data += reloc->section_offset;
943 vaddr = reloc->section->file_offset;
944 vaddr += reloc->section_offset;
946 /* FIXME: little endian */
948 data [1] = end_val >> 8;
949 data [2] = end_val >> 16;
950 data [3] = end_val >> 24;
951 if (start_val == 0) {
953 rr [i].value = 8; /* FIXME: 386_RELATIVE */
955 g_assert (i <= acfg->num_relocs);
962 emit_writeout (MonoAotCompile *acfg)
964 char *outfile_name, *tmp_outfile_name;
966 struct ElfHeader header;
967 struct ElfProgHeader progh [3];
968 struct ElfSectHeader secth [SECT_NUM];
970 ElfStrTable str_table = {NULL, NULL};
971 ElfStrTable sh_str_table = {NULL, NULL};
972 ElfStrTable dyn_str_table = {NULL, NULL};
973 BinSection* sections [6];
974 BinSection *text_section = NULL, *data_section = NULL, *bss_section = NULL;
977 ElfDynamic dynamic [14];
979 int i, num_sections, file_offset, virt_offset, size, num_symtab;
982 if (acfg->aot_opts.outfile)
983 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
985 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
987 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
989 unlink (tmp_outfile_name);
990 file = fopen (tmp_outfile_name, "w");
993 /* Section headers */
994 memset (§h, 0, sizeof (secth));
995 memset (&dynamic, 0, sizeof (dynamic));
996 memset (&header, 0, sizeof (header));
998 for (i = 1; i < SECT_NUM; ++i) {
999 secth [i].sh_name = str_table_add (&sh_str_table, section_names [i]);
1000 secth [i].sh_type = section_type [i];
1001 secth [i].sh_link = section_link [i];
1002 secth [i].sh_addralign = section_align [i];
1003 secth [i].sh_flags = section_flags [i];
1004 secth [i].sh_entsize = section_esize [i];
1006 secth [SECT_DYNSYM].sh_info = 4;
1007 secth [SECT_SYMTAB].sh_info = 20;
1009 num_sections = collect_sections (acfg, secth, sections, 6);
1010 hash = build_hash (acfg, num_sections, &dyn_str_table);
1011 num_symtab = hash [1]; /* FIXME */
1012 g_print ("num_sections: %d\n", num_sections);
1013 g_print ("dynsym: %d, dynstr size: %d\n", hash [1], dyn_str_table.data->len);
1014 for (i = 0; i < num_sections; ++i) {
1015 g_print ("section %s, size: %d, %x\n", sections [i]->name, sections [i]->cur_offset, sections [i]->cur_offset);
1018 /* at this point we know where in the file the first segment sections go */
1019 dynsym = collect_syms (acfg, hash, &dyn_str_table, NULL, NULL);
1020 num_local_syms = hash [1];
1021 symtab = collect_syms (acfg, NULL, &str_table, secth, &num_local_syms);
1023 for (i = 0; i < num_sections; ++i) {
1024 if (sections [i]->shidx == SECT_TEXT) {
1025 text_section = sections [i];
1026 } else if (sections [i]->shidx == SECT_DATA) {
1027 data_section = sections [i];
1028 } else if (sections [i]->shidx == SECT_BSS) {
1029 bss_section = sections [i];
1033 file_offset = virt_offset = sizeof (header) + sizeof (progh);
1034 secth [SECT_HASH].sh_addr = secth [SECT_HASH].sh_offset = file_offset;
1035 size = sizeof (int) * (2 + hash [0] + hash [1]);
1036 virt_offset = (file_offset += size);
1037 secth [SECT_HASH].sh_size = size;
1038 secth [SECT_DYNSYM].sh_addr = secth [SECT_DYNSYM].sh_offset = file_offset;
1039 size = sizeof (ElfSymbol) * hash [1];
1040 virt_offset = (file_offset += size);
1041 secth [SECT_DYNSYM].sh_size = size;
1042 secth [SECT_DYNSTR].sh_addr = secth [SECT_DYNSTR].sh_offset = file_offset;
1043 size = dyn_str_table.data->len;
1044 virt_offset = (file_offset += size);
1045 secth [SECT_DYNSTR].sh_size = size;
1047 file_offset &= ~(4-1);
1048 secth [SECT_REL_DYN].sh_addr = secth [SECT_REL_DYN].sh_offset = file_offset;
1049 size = sizeof (ElfReloc) * acfg->num_relocs;
1050 secth [SECT_REL_DYN].sh_size = size;
1051 virt_offset = (file_offset += size);
1052 secth [SECT_REL_DYN].sh_size = size;
1053 file_offset += 4096-1;
1054 file_offset &= ~(4096-1);
1055 virt_offset = file_offset;
1056 secth [SECT_TEXT].sh_addr = secth [SECT_TEXT].sh_offset = file_offset;
1057 size = text_section->cur_offset;
1058 secth [SECT_TEXT].sh_size = size;
1059 file_offset += size;
1061 file_offset &= ~(4-1);
1062 virt_offset = file_offset;
1063 /* .dynamic, .got.plt, .data, .bss here */
1064 secth [SECT_DYNAMIC].sh_addr = virt_offset;
1065 secth [SECT_DYNAMIC].sh_offset = file_offset;
1066 size = sizeof (dynamic);
1067 secth [SECT_DYNAMIC].sh_size = size;
1070 file_offset += size;
1071 virt_offset += size;
1072 secth [SECT_GOT_PLT].sh_addr = virt_offset;
1073 secth [SECT_GOT_PLT].sh_offset = file_offset;
1075 secth [SECT_GOT_PLT].sh_size = size;
1078 file_offset += size;
1079 virt_offset += size;
1080 secth [SECT_DATA].sh_addr = virt_offset;
1081 secth [SECT_DATA].sh_offset = file_offset;
1082 size = data_section->cur_offset;
1083 secth [SECT_DATA].sh_size = size;
1086 file_offset += size;
1087 virt_offset += size;
1088 secth [SECT_BSS].sh_addr = virt_offset;
1089 secth [SECT_BSS].sh_offset = file_offset;
1090 size = bss_section->cur_offset;
1091 secth [SECT_BSS].sh_size = size;
1093 /* virtual doesn't matter anymore */
1094 secth [SECT_SHSTRTAB].sh_offset = file_offset;
1095 size = sh_str_table.data->len;
1096 secth [SECT_SHSTRTAB].sh_size = size;
1099 file_offset += size;
1100 secth [SECT_SYMTAB].sh_offset = file_offset;
1101 size = sizeof (ElfSymbol) * num_local_syms;
1102 secth [SECT_SYMTAB].sh_size = size;
1103 file_offset += size;
1104 secth [SECT_STRTAB].sh_offset = file_offset;
1105 size = str_table.data->len;
1106 secth [SECT_STRTAB].sh_size = size;
1107 file_offset += size;
1109 file_offset &= ~(4-1);
1111 text_section->file_offset = secth [SECT_TEXT].sh_offset;
1112 data_section->file_offset = secth [SECT_DATA].sh_offset;
1113 bss_section->file_offset = secth [SECT_BSS].sh_offset;
1115 header.e_ident [0] = 0x7f; header.e_ident [1] = 'E';
1116 header.e_ident [2] = 'L'; header.e_ident [3] = 'F';
1117 header.e_ident [4] = SIZEOF_VOID_P == 4? 1: 2;
1118 header.e_ident [5] = 1; /* FIXME: little endian, bigendian is 2 */
1119 header.e_ident [6] = 1; /* version */
1120 header.e_ident [7] = 0; /* FIXME: */
1121 header.e_ident [8] = 0; /* FIXME: */
1122 for (i = 9; i < 16; ++i)
1123 header.e_ident [i] = 0;
1125 header.e_type = 3; /* shared library */
1126 header.e_machine = 3; /* FIXME: 386 */
1127 header.e_version = 1; /* FIXME: */
1129 header.e_phoff = sizeof (header);
1130 header.e_ehsize = sizeof (header);
1131 header.e_phentsize = sizeof (struct ElfProgHeader);
1133 header.e_entry = secth [SECT_TEXT].sh_addr;
1134 header.e_shstrndx = 10;
1135 header.e_shentsize = sizeof (struct ElfSectHeader);
1136 header.e_shnum = SECT_NUM;
1137 header.e_shoff = file_offset;
1141 dynamic [i].d_tag = DYN_HASH;
1142 dynamic [i].d_val = secth [SECT_HASH].sh_offset;
1144 dynamic [i].d_tag = DYN_STRTAB;
1145 dynamic [i].d_val = secth [SECT_DYNSTR].sh_offset;
1147 dynamic [i].d_tag = DYN_SYMTAB;
1148 dynamic [i].d_val = secth [SECT_DYNSYM].sh_offset;
1150 dynamic [i].d_tag = DYN_STRSZ;
1151 dynamic [i].d_val = dyn_str_table.data->len;
1153 dynamic [i].d_tag = DYN_SYMENT;
1154 dynamic [i].d_val = sizeof (ElfSymbol);
1156 dynamic [i].d_tag = DYN_REL;
1157 dynamic [i].d_val = secth [SECT_REL_DYN].sh_offset;
1159 dynamic [i].d_tag = DYN_RELSZ;
1160 dynamic [i].d_val = secth [SECT_REL_DYN].sh_size;
1162 dynamic [i].d_tag = DYN_RELENT;
1163 dynamic [i].d_val = sizeof (ElfReloc);
1165 dynamic [i].d_tag = DYN_RELCOUNT;
1166 dynamic [i].d_val = acfg->num_relocs;
1169 /* Program header */
1170 memset (&progh, 0, sizeof (progh));
1171 progh [0].p_type = 1; /* LOAD */
1172 progh [0].p_filesz = progh [0].p_memsz = secth [SECT_DYNAMIC].sh_offset;
1173 progh [0].p_align = 4096;
1174 progh [0].p_flags = 5;
1176 progh [1].p_type = 1;
1177 progh [1].p_offset = secth [SECT_DYNAMIC].sh_offset;
1178 progh [1].p_vaddr = progh [1].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1179 progh [1].p_filesz = secth [SECT_BSS].sh_offset - secth [SECT_DYNAMIC].sh_offset;
1180 progh [1].p_memsz = secth [SECT_BSS].sh_addr + secth [SECT_BSS].sh_size - secth [SECT_DYNAMIC].sh_addr;
1181 progh [1].p_align = 4096;
1182 progh [1].p_flags = 6;
1184 progh [2].p_type = 2; /* DYNAMIC */
1185 progh [2].p_offset = secth [SECT_DYNAMIC].sh_offset;
1186 progh [2].p_vaddr = progh [2].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1187 progh [2].p_filesz = progh [2].p_memsz = secth [SECT_DYNAMIC].sh_size;
1188 progh [2].p_align = 4;
1189 progh [2].p_flags = 6;
1191 reloc_symbols (acfg, dynsym, secth, &dyn_str_table, TRUE);
1192 reloc_symbols (acfg, symtab, secth, &str_table, FALSE);
1193 relocs = resolve_relocations (acfg);
1195 fwrite (&header, sizeof (header), 1, file);
1196 fwrite (&progh, sizeof (progh), 1, file);
1197 fwrite (hash, sizeof (int) * (hash [0] + hash [1] + 2), 1, file);
1198 fwrite (dynsym, sizeof (ElfSymbol) * hash [1], 1, file);
1199 fwrite (dyn_str_table.data->str, dyn_str_table.data->len, 1, file);
1201 fseek (file, secth [SECT_REL_DYN].sh_offset, SEEK_SET);
1202 fwrite (relocs, sizeof (ElfReloc), acfg->num_relocs, file);
1204 fseek (file, secth [SECT_TEXT].sh_offset, SEEK_SET);
1205 /* write .text, .data, .bss sections */
1206 fwrite (text_section->data, text_section->cur_offset, 1, file);
1209 fwrite (dynamic, sizeof (dynamic), 1, file);
1211 size = secth [SECT_DYNAMIC].sh_addr;
1212 fwrite (&size, sizeof (size), 1, file);
1213 fseek (file, secth [SECT_DATA].sh_offset, SEEK_SET);
1214 fwrite (data_section->data, data_section->cur_offset, 1, file);
1216 fseek (file, secth [SECT_SHSTRTAB].sh_offset, SEEK_SET);
1217 fwrite (sh_str_table.data->str, sh_str_table.data->len, 1, file);
1218 fseek (file, secth [SECT_SYMTAB].sh_offset, SEEK_SET);
1219 fwrite (symtab, sizeof (ElfSymbol) * num_local_syms, 1, file);
1220 fseek (file, secth [SECT_STRTAB].sh_offset, SEEK_SET);
1221 fwrite (str_table.data->str, str_table.data->len, 1, file);
1222 /*g_print ("file_offset %d vs %d\n", file_offset, ftell (file));*/
1223 /*g_assert (file_offset >= ftell (file));*/
1224 fseek (file, file_offset, SEEK_SET);
1225 fwrite (§h, sizeof (secth), 1, file);
1227 rename (tmp_outfile_name, outfile_name);
1229 g_free (tmp_outfile_name);
1230 g_free (outfile_name);
1233 #endif /* USE_ELF_WRITER */
1238 emit_start (MonoAotCompile *acfg)
1240 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
1241 acfg->fp = fdopen (i, "w+");
1242 g_assert (acfg->fp);
1246 emit_unset_mode (MonoAotCompile *acfg)
1248 if (acfg->mode == EMIT_NONE)
1250 fprintf (acfg->fp, "\n");
1251 acfg->mode = EMIT_NONE;
1255 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
1257 emit_unset_mode (acfg);
1258 #if defined(PLATFORM_WIN32)
1259 fprintf (acfg->fp, ".section %s\n", section_name);
1260 #elif defined(sparc)
1261 /* For solaris as, GNU as should accept the same */
1262 fprintf (acfg->fp, ".section \"%s\"\n", section_name);
1263 #elif defined(__ppc__) && defined(__MACH__)
1264 /* This needs to be made more precise on mach. */
1265 fprintf (acfg->fp, "%s\n", subsection_index == 0 ? ".text" : ".data");
1267 fprintf (acfg->fp, "%s %d\n", section_name, subsection_index);
1272 emit_symbol_type (MonoAotCompile *acfg, const char *name, gboolean func)
1281 emit_unset_mode (acfg);
1283 fprintf (acfg->fp, "\t.type %s,#%s\n", name, stype);
1284 #elif defined(PLATFORM_WIN32)
1286 #elif !(defined(__ppc__) && defined(__MACH__))
1287 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1288 #elif defined(__x86_64__) || defined(__i386__)
1289 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1294 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
1296 emit_unset_mode (acfg);
1297 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1298 // mach-o always uses a '_' prefix.
1299 fprintf (acfg->fp, "\t.globl _%s\n", name);
1301 fprintf (acfg->fp, "\t.globl %s\n", name);
1304 emit_symbol_type (acfg, name, func);
1308 emit_label (MonoAotCompile *acfg, const char *name)
1310 emit_unset_mode (acfg);
1311 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1312 // mach-o always uses a '_' prefix.
1313 fprintf (acfg->fp, "_%s:\n", name);
1315 fprintf (acfg->fp, "%s:\n", name);
1318 #if defined(PLATFORM_WIN32)
1319 /* Emit a normal label too */
1320 fprintf (acfg->fp, "%s:\n", name);
1325 emit_string (MonoAotCompile *acfg, const char *value)
1327 emit_unset_mode (acfg);
1328 fprintf (acfg->fp, "\t%s \"%s\"\n", AS_STRING_DIRECTIVE, value);
1332 emit_line (MonoAotCompile *acfg)
1334 emit_unset_mode (acfg);
1335 fprintf (acfg->fp, "\n");
1339 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
1341 emit_unset_mode (acfg);
1342 emit_section_change (acfg, ".text", 1);
1343 emit_global (acfg, name, FALSE);
1344 emit_label (acfg, name);
1345 emit_string (acfg, value);
1349 emit_alignment (MonoAotCompile *acfg, int size)
1351 emit_unset_mode (acfg);
1352 #if defined(__ppc__) && defined(__MACH__)
1353 // the mach-o assembler specifies alignments as powers of 2.
1354 fprintf (acfg->fp, "\t.align %d\t; ilog2\n", ilog2(size));
1355 #elif defined(__powerpc__)
1356 /* ignore on linux/ppc */
1358 fprintf (acfg->fp, "\t.align %d\n", size);
1363 emit_pointer (MonoAotCompile *acfg, const char *target)
1365 emit_unset_mode (acfg);
1366 emit_alignment (acfg, sizeof (gpointer));
1367 #if defined(__x86_64__)
1368 fprintf (acfg->fp, "\t.quad %s\n", target);
1369 #elif defined(sparc) && SIZEOF_VOID_P == 8
1370 fprintf (acfg->fp, "\t.xword %s\n", target);
1372 fprintf (acfg->fp, "\t.long %s\n", target);
1377 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
1380 if (acfg->mode != EMIT_BYTE) {
1381 acfg->mode = EMIT_BYTE;
1382 acfg->col_count = 0;
1384 for (i = 0; i < size; ++i, ++acfg->col_count) {
1385 if ((acfg->col_count % 32) == 0)
1386 fprintf (acfg->fp, "\n\t.byte ");
1388 fprintf (acfg->fp, ", ");
1389 fprintf (acfg->fp, "0x%x", buf [i]);
1394 emit_int16 (MonoAotCompile *acfg, int value)
1396 if (acfg->mode != EMIT_WORD) {
1397 acfg->mode = EMIT_WORD;
1398 acfg->col_count = 0;
1400 if ((acfg->col_count++ % 8) == 0)
1401 fprintf (acfg->fp, "\n\t.word ");
1403 fprintf (acfg->fp, ", ");
1404 fprintf (acfg->fp, "%d", value);
1408 emit_int32 (MonoAotCompile *acfg, int value)
1410 if (acfg->mode != EMIT_LONG) {
1411 acfg->mode = EMIT_LONG;
1412 acfg->col_count = 0;
1414 if ((acfg->col_count++ % 8) == 0)
1415 fprintf (acfg->fp, "\n\t.long ");
1417 fprintf (acfg->fp, ", ");
1418 fprintf (acfg->fp, "%d", value);
1422 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
1424 if (acfg->mode != EMIT_LONG) {
1425 acfg->mode = EMIT_LONG;
1426 acfg->col_count = 0;
1428 if ((acfg->col_count++ % 8) == 0)
1429 fprintf (acfg->fp, "\n\t.long ");
1431 fprintf (acfg->fp, ", ");
1433 fprintf (acfg->fp, "%s - %s %c %d", end, start, offset < 0? ' ': '+', offset);
1435 fprintf (acfg->fp, "%s - %s", end, start);
1439 emit_zero_bytes (MonoAotCompile *acfg, int num)
1441 emit_unset_mode (acfg);
1442 fprintf (acfg->fp, "\t.skip %d\n", num);
1446 emit_writeout (MonoAotCompile *acfg)
1448 char *command, *objfile;
1449 char *outfile_name, *tmp_outfile_name;
1453 #if defined(__x86_64__)
1454 #define AS_OPTIONS "--64"
1455 #elif defined(sparc) && SIZEOF_VOID_P == 8
1456 #define AS_OPTIONS "-xarch=v9"
1458 #define AS_OPTIONS ""
1460 command = g_strdup_printf ("as %s %s -o %s.o", AS_OPTIONS, acfg->tmpfname, acfg->tmpfname);
1461 printf ("Executing the native assembler: %s\n", command);
1462 if (system (command) != 0) {
1469 if (acfg->aot_opts.outfile)
1470 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1472 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1474 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1477 command = g_strdup_printf ("ld -shared -G -o %s %s.o", outfile_name, acfg->tmpfname);
1478 #elif defined(__ppc__) && defined(__MACH__)
1479 command = g_strdup_printf ("gcc -dynamiclib -o %s %s.o", outfile_name, acfg->tmpfname);
1480 #elif defined(PLATFORM_WIN32)
1481 command = g_strdup_printf ("gcc -shared --dll -mno-cygwin -o %s %s.o", outfile_name, acfg->tmpfname);
1483 command = g_strdup_printf ("ld -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1485 printf ("Executing the native linker: %s\n", command);
1486 if (system (command) != 0) {
1487 g_free (tmp_outfile_name);
1488 g_free (outfile_name);
1494 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
1497 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
1498 printf ("Stripping the binary: %s\n", com);
1502 rename (tmp_outfile_name, outfile_name);
1504 g_free (tmp_outfile_name);
1505 g_free (outfile_name);
1507 if (acfg->aot_opts.save_temps)
1508 printf ("Retained input file.\n");
1510 unlink (acfg->tmpfname);
1514 #endif /* ASM_WRITER */
1517 emit_byte (MonoAotCompile *acfg, guint8 val)
1519 emit_bytes (acfg, &val, 1);
1523 mono_get_field_token (MonoClassField *field)
1525 MonoClass *klass = field->parent;
1528 for (i = 0; i < klass->field.count; ++i) {
1529 if (field == &klass->fields [i])
1530 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
1533 g_assert_not_reached ();
1538 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
1542 //printf ("ENCODE: %d 0x%x.\n", value, value);
1545 * Same encoding as the one used in the metadata, extended to handle values
1546 * greater than 0x1fffffff.
1548 if ((value >= 0) && (value <= 127))
1550 else if ((value >= 0) && (value <= 16383)) {
1551 p [0] = 0x80 | (value >> 8);
1552 p [1] = value & 0xff;
1554 } else if ((value >= 0) && (value <= 0x1fffffff)) {
1555 p [0] = (value >> 24) | 0xc0;
1556 p [1] = (value >> 16) & 0xff;
1557 p [2] = (value >> 8) & 0xff;
1558 p [3] = value & 0xff;
1563 p [1] = (value >> 24) & 0xff;
1564 p [2] = (value >> 16) & 0xff;
1565 p [3] = (value >> 8) & 0xff;
1566 p [4] = value & 0xff;
1574 get_image_index (MonoAotCompile *cfg, MonoImage *image)
1578 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
1582 index = g_hash_table_size (cfg->image_hash);
1583 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
1584 g_ptr_array_add (cfg->image_table, image);
1590 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
1593 MonoClass *k = NULL;
1595 /* FIXME: Search referenced images as well */
1596 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
1597 /* Since we don't compile generic methods, the context is empty */
1598 k = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
1603 g_assert (i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows);
1605 return MONO_TOKEN_TYPE_SPEC | (i + 1);
1609 encode_klass_info (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
1611 if (klass->generic_class) {
1612 g_assert (klass->type_token);
1614 encode_value (find_typespec_for_class (acfg, klass), buf, &buf);
1615 encode_value (get_image_index (acfg, acfg->image), buf, &buf);
1616 } else if (!klass->type_token) {
1620 g_assert (klass->rank > 0);
1621 encode_value (MONO_TOKEN_TYPE_DEF, buf, &buf);
1622 encode_value (get_image_index (acfg, klass->image), buf, &buf);
1623 token = klass->element_class->type_token;
1626 g_assert (klass->element_class->rank);
1627 encode_value (0, buf, &buf);
1628 encode_value (klass->element_class->rank, buf, &buf);
1629 token = klass->element_class->element_class->type_token;
1631 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_TYPE_DEF);
1632 encode_value (token - MONO_TOKEN_TYPE_DEF, buf, &buf);
1633 encode_value (klass->rank, buf, &buf);
1636 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
1637 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, buf, &buf);
1638 encode_value (get_image_index (acfg, klass->image), buf, &buf);
1644 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
1646 guint32 token = mono_get_field_token (field);
1648 encode_klass_info (cfg, field->parent, buf, &buf);
1649 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
1650 encode_value (token - MONO_TOKEN_FIELD_DEF, buf, &buf);
1656 find_methodspec_for_method (MonoAotCompile *acfg, MonoMethod *method)
1659 MonoMethod *m = NULL;
1661 /* FIXME: Search referenced images as well */
1662 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
1663 /* Since we don't compile generic methods, the context is empty */
1664 m = mono_get_method_full (acfg->image, MONO_TOKEN_METHOD_SPEC | (i + 1), NULL, NULL);
1669 g_assert (i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows);
1671 return MONO_TOKEN_METHOD_SPEC | (i + 1);
1676 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
1678 guint32 image_index = get_image_index (acfg, method->klass->image);
1679 guint32 token = method->token;
1680 MonoJumpInfoToken *ji;
1682 g_assert (image_index < 255);
1684 if (method->klass->generic_class || mono_method_signature (method)->is_inflated) {
1686 * This is a generic method, find the original token which referenced it and
1689 /* This doesn't work for some reason */
1691 image_index = get_image_index (acfg, acfg->image);
1692 g_assert (image_index < 255);
1693 token = find_methodspec_for_method (acfg, method);
1695 /* Obtain the token from information recorded by the JIT */
1696 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1697 image_index = get_image_index (acfg, ji->image);
1698 g_assert (image_index < 255);
1701 encode_value ((255 << 24), buf, &buf);
1702 encode_value (image_index, buf, &buf);
1703 encode_value (token, buf, &buf);
1705 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1706 encode_value ((image_index << 24) | mono_metadata_token_index (token), buf, &buf);
1712 compare_patches (gconstpointer a, gconstpointer b)
1716 i = (*(MonoJumpInfo**)a)->ip.i;
1717 j = (*(MonoJumpInfo**)b)->ip.i;
1729 get_plt_index (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
1734 switch (patch_info->type) {
1735 case MONO_PATCH_INFO_METHOD:
1736 case MONO_PATCH_INFO_WRAPPER:
1737 case MONO_PATCH_INFO_INTERNAL_METHOD:
1738 case MONO_PATCH_INFO_CLASS_INIT: {
1739 MonoJumpInfo *new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
1740 gpointer patch_id = NULL;
1742 /* First check for an existing patch */
1743 switch (patch_info->type) {
1744 case MONO_PATCH_INFO_METHOD:
1745 patch_id = patch_info->data.method;
1747 case MONO_PATCH_INFO_INTERNAL_METHOD:
1748 patch_id = (gpointer)patch_info->data.name;
1750 case MONO_PATCH_INFO_CLASS_INIT:
1751 patch_id = patch_info->data.klass;
1753 case MONO_PATCH_INFO_WRAPPER:
1754 /* A bit ugly, but works */
1755 g_assert (patch_info->data.method->wrapper_type < sizeof (MonoMethod));
1756 patch_id = (gpointer)(((guint8*)patch_info->data.method) + patch_info->data.method->wrapper_type);
1759 g_assert_not_reached ();
1763 idx = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_plt_offset, patch_id));
1767 g_hash_table_insert (acfg->patch_to_plt_offset, patch_id, GUINT_TO_POINTER (acfg->plt_offset));
1771 res = acfg->plt_offset;
1772 g_hash_table_insert (acfg->plt_offset_to_patch, GUINT_TO_POINTER (acfg->plt_offset), new_ji);
1773 acfg->plt_offset ++;
1776 /* Nullify the patch */
1777 patch_info->type = MONO_PATCH_INFO_NONE;
1789 * Returns the offset of the GOT slot where the runtime object resulting from resolving
1790 * JI could be found if it exists, otherwise allocates a new one.
1793 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1797 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji));
1799 return got_offset - 1;
1801 got_offset = acfg->got_offset;
1802 acfg->got_offset ++;
1804 acfg->stats.got_slots ++;
1805 acfg->stats.got_slot_types [ji->type] ++;
1811 get_shared_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1816 if (!g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji)) {
1817 got_offset = get_got_offset (acfg, ji);
1818 copy = mono_patch_info_dup_mp (acfg->mempool, ji);
1819 g_hash_table_insert (acfg->patch_to_shared_got_offset, copy, GUINT_TO_POINTER (got_offset + 1));
1820 g_ptr_array_add (acfg->shared_patches, copy);
1823 return get_got_offset (acfg, ji);
1827 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
1830 int i, pindex, method_index;
1833 int func_alignment = 16;
1835 MonoJumpInfo *patch_info;
1836 MonoMethodHeader *header;
1840 method = cfg->method;
1841 code = cfg->native_code;
1842 header = mono_method_get_header (method);
1844 method_index = mono_metadata_token_index (method->token);
1846 /* Make the labels local */
1847 symbol = g_strdup_printf (".Lm_%x", method_index);
1849 emit_alignment (acfg, func_alignment);
1850 emit_label (acfg, symbol);
1851 if (acfg->aot_opts.write_symbols)
1852 emit_global (acfg, symbol, TRUE);
1854 if (cfg->verbose_level > 0)
1855 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
1857 acfg->stats.code_size += cfg->code_len;
1859 /* Collect and sort relocations */
1860 patches = g_ptr_array_new ();
1861 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
1862 g_ptr_array_add (patches, patch_info);
1863 g_ptr_array_sort (patches, compare_patches);
1865 acfg->method_got_offsets [method_index] = acfg->got_offset;
1866 for (i = 0; i < cfg->code_len; i++) {
1868 for (pindex = 0; pindex < patches->len; ++pindex) {
1869 patch_info = g_ptr_array_index (patches, pindex);
1870 if (patch_info->ip.i == i)
1874 #ifdef MONO_ARCH_HAVE_PIC_AOT
1877 if (patch_info && (pindex < patches->len)) {
1878 switch (patch_info->type) {
1879 case MONO_PATCH_INFO_LABEL:
1880 case MONO_PATCH_INFO_BB:
1881 case MONO_PATCH_INFO_NONE:
1883 case MONO_PATCH_INFO_GOT_OFFSET: {
1884 guint32 offset = mono_arch_get_patch_offset (code + i);
1885 emit_bytes (acfg, code + i, offset);
1886 emit_symbol_diff (acfg, "got", ".", offset);
1888 i += offset + 4 - 1;
1894 char *direct_call_target;
1896 if (!is_got_patch (patch_info->type))
1900 * If this patch is a call, try emitting a direct call instead of
1901 * through a PLT entry. This is possible if the called method is in
1902 * the same assembly and requires no initialization.
1904 direct_call_target = NULL;
1905 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == cfg->method->klass->image)) {
1906 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
1908 guint32 callee_idx = mono_metadata_token_index (callee_cfg->method->token);
1909 if (!acfg->has_got_slots [callee_idx] && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)) {
1910 //printf ("DIRECT: %s %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (callee_cfg->method, TRUE));
1911 direct_call_target = g_strdup_printf (".Lm_%x", mono_metadata_token_index (callee_cfg->method->token));
1912 patch_info->type = MONO_PATCH_INFO_NONE;
1913 acfg->stats.direct_calls ++;
1917 acfg->stats.all_calls ++;
1920 if (!direct_call_target) {
1921 plt_index = get_plt_index (acfg, patch_info);
1922 if (plt_index != -1) {
1923 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
1924 direct_call_target = g_strdup_printf (".Lp_%d", plt_index);
1928 if (direct_call_target) {
1929 #if defined(__i386__) || defined(__x86_64__)
1930 g_assert (code [i] == 0xe8);
1931 /* Need to make sure this is exactly 5 bytes long */
1932 emit_byte (acfg, '\xe8');
1933 emit_symbol_diff (acfg, direct_call_target, ".", -4);
1936 g_assert_not_reached ();
1939 got_slot = get_got_offset (acfg, patch_info);
1941 emit_bytes (acfg, code + i, mono_arch_get_patch_offset (code + i));
1943 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
1944 #elif defined(__i386__)
1945 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
1948 i += mono_arch_get_patch_offset (code + i) + 4 - 1;
1954 #endif /* MONO_ARCH_HAVE_PIC_AOT */
1957 emit_bytes (acfg, code + i, 1);
1965 * Encode PATCH_INFO into its disk representation. If SHARED is true, encode some types
1966 * of patches by allocating a GOT entry for them, and encode the GOT offset instead.
1969 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf, gboolean shared)
1973 switch (patch_info->type) {
1974 case MONO_PATCH_INFO_NONE:
1976 case MONO_PATCH_INFO_IMAGE:
1977 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
1979 case MONO_PATCH_INFO_METHOD_REL:
1980 encode_value ((gint)patch_info->data.offset, p, &p);
1982 case MONO_PATCH_INFO_SWITCH: {
1983 gpointer *table = (gpointer *)patch_info->data.table->table;
1986 encode_value (patch_info->data.table->table_size, p, &p);
1987 for (k = 0; k < patch_info->data.table->table_size; k++)
1988 encode_value ((int)(gssize)table [k], p, &p);
1991 case MONO_PATCH_INFO_METHODCONST:
1992 case MONO_PATCH_INFO_METHOD:
1993 case MONO_PATCH_INFO_METHOD_JUMP:
1994 encode_method_ref (acfg, patch_info->data.method, p, &p);
1996 case MONO_PATCH_INFO_INTERNAL_METHOD: {
1997 guint32 len = strlen (patch_info->data.name);
1999 encode_value (len, p, &p);
2001 memcpy (p, patch_info->data.name, len);
2006 case MONO_PATCH_INFO_LDSTR: {
2007 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
2008 guint32 token = patch_info->data.token->token;
2009 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
2010 encode_value (image_index, p, &p);
2011 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
2014 case MONO_PATCH_INFO_RVA:
2015 case MONO_PATCH_INFO_DECLSEC:
2016 case MONO_PATCH_INFO_LDTOKEN:
2017 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2019 guint32 offset = get_got_offset (acfg, patch_info);
2020 encode_value (offset, p, &p);
2022 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
2023 encode_value (patch_info->data.token->token, p, &p);
2026 case MONO_PATCH_INFO_EXC_NAME: {
2027 MonoClass *ex_class;
2030 mono_class_from_name (mono_defaults.exception_class->image,
2031 "System", patch_info->data.target);
2032 g_assert (ex_class);
2033 encode_klass_info (acfg, ex_class, p, &p);
2036 case MONO_PATCH_INFO_R4:
2037 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2039 case MONO_PATCH_INFO_R8:
2040 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2041 encode_value (*(((guint32 *)patch_info->data.target) + 1), p, &p);
2043 case MONO_PATCH_INFO_VTABLE:
2044 case MONO_PATCH_INFO_CLASS:
2045 case MONO_PATCH_INFO_IID:
2046 case MONO_PATCH_INFO_ADJUSTED_IID:
2048 guint32 offset = get_got_offset (acfg, patch_info);
2049 encode_value (offset, p, &p);
2051 encode_klass_info (acfg, patch_info->data.klass, p, &p);
2054 case MONO_PATCH_INFO_CLASS_INIT:
2055 encode_klass_info (acfg, patch_info->data.klass, p, &p);
2057 case MONO_PATCH_INFO_FIELD:
2058 case MONO_PATCH_INFO_SFLDA:
2060 guint32 offset = get_got_offset (acfg, patch_info);
2061 encode_value (offset, p, &p);
2063 encode_field_info (acfg, patch_info->data.field, p, &p);
2066 case MONO_PATCH_INFO_WRAPPER: {
2067 encode_value (patch_info->data.method->wrapper_type, p, &p);
2069 switch (patch_info->data.method->wrapper_type) {
2070 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: {
2072 guint32 image_index;
2075 m = mono_marshal_method_from_wrapper (patch_info->data.method);
2076 image_index = get_image_index (acfg, m->klass->image);
2078 g_assert (image_index < 256);
2079 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
2081 encode_value ((image_index << 24) + (mono_metadata_token_index (token)), p, &p);
2084 case MONO_WRAPPER_PROXY_ISINST:
2085 case MONO_WRAPPER_LDFLD:
2086 case MONO_WRAPPER_LDFLDA:
2087 case MONO_WRAPPER_STFLD:
2088 case MONO_WRAPPER_LDFLD_REMOTE:
2089 case MONO_WRAPPER_STFLD_REMOTE:
2090 case MONO_WRAPPER_ISINST: {
2091 MonoClass *proxy_class = (MonoClass*)mono_marshal_method_from_wrapper (patch_info->data.method);
2092 encode_klass_info (acfg, proxy_class, p, &p);
2095 case MONO_WRAPPER_STELEMREF:
2098 g_assert_not_reached ();
2103 g_warning ("unable to handle jump info %d", patch_info->type);
2104 g_assert_not_reached ();
2111 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
2115 int j, pindex, buf_size, n_patches;
2119 MonoJumpInfo *patch_info;
2120 MonoMethodHeader *header;
2121 guint32 last_offset, method_idx;
2123 guint32 first_got_offset;
2125 method = cfg->method;
2126 code = cfg->native_code;
2127 header = mono_method_get_header (method);
2129 method_idx = mono_metadata_token_index (method->token);
2131 /* Make the labels local */
2132 symbol = g_strdup_printf (".Lm_%x_p", method_idx);
2134 /* Sort relocations */
2135 patches = g_ptr_array_new ();
2136 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
2137 g_ptr_array_add (patches, patch_info);
2138 g_ptr_array_sort (patches, compare_patches);
2140 first_got_offset = acfg->method_got_offsets [mono_metadata_token_index (cfg->method->token)];
2142 /**********************/
2143 /* Encode method info */
2144 /**********************/
2146 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
2147 p = buf = g_malloc (buf_size);
2149 if (mono_class_get_cctor (method->klass))
2150 encode_klass_info (acfg, method->klass, p, &p);
2152 /* Not needed when loading the method */
2153 encode_value (0, p, &p);
2156 if (cfg->opt & MONO_OPT_SHARED) {
2157 encode_value (g_list_length (cfg->ldstr_list), p, &p);
2158 for (l = cfg->ldstr_list; l; l = l->next) {
2159 encode_value ((long)l->data, p, &p);
2163 /* Used only in shared mode */
2164 g_assert (!cfg->ldstr_list);
2167 for (pindex = 0; pindex < patches->len; ++pindex) {
2168 patch_info = g_ptr_array_index (patches, pindex);
2170 if ((patch_info->type == MONO_PATCH_INFO_LABEL) ||
2171 (patch_info->type == MONO_PATCH_INFO_BB) ||
2172 (patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
2173 (patch_info->type == MONO_PATCH_INFO_NONE)) {
2174 patch_info->type = MONO_PATCH_INFO_NONE;
2179 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
2180 /* Stored in a GOT slot initialized at module load time */
2181 patch_info->type = MONO_PATCH_INFO_NONE;
2185 if ((patch_info->type == MONO_PATCH_INFO_METHOD) ||
2186 (patch_info->type == MONO_PATCH_INFO_INTERNAL_METHOD) ||
2187 (patch_info->type == MONO_PATCH_INFO_WRAPPER) ||
2188 (patch_info->type == MONO_PATCH_INFO_CLASS_INIT)) {
2189 /* Calls are made through the PLT */
2190 patch_info->type = MONO_PATCH_INFO_NONE;
2198 g_assert (acfg->has_got_slots [method_idx]);
2200 encode_value (n_patches, p, &p);
2203 encode_value (first_got_offset, p, &p);
2205 /* First encode the type+position table */
2208 for (pindex = 0; pindex < patches->len; ++pindex) {
2210 patch_info = g_ptr_array_index (patches, pindex);
2212 if (patch_info->type == MONO_PATCH_INFO_NONE)
2217 //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
2218 offset = patch_info->ip.i - last_offset;
2219 last_offset = patch_info->ip.i;
2221 /* Only the type is needed */
2222 *p = patch_info->type;
2228 printf ("%s:\n", mono_method_full_name (cfg->method, TRUE));
2229 for (pindex = 0; pindex < patches->len; ++pindex) {
2230 patch_info = g_ptr_array_index (patches, pindex);
2231 if (patch_info->type != MONO_PATCH_INFO_NONE) {
2232 printf ("\t%s", get_patch_name (patch_info->type));
2233 if (patch_info->type == MONO_PATCH_INFO_VTABLE)
2234 printf (": %s\n", patch_info->data.klass->name);
2242 /* Then encode the other info */
2243 for (pindex = 0; pindex < patches->len; ++pindex) {
2244 patch_info = g_ptr_array_index (patches, pindex);
2246 encode_patch (acfg, patch_info, p, &p, TRUE);
2249 acfg->stats.info_size += p - buf;
2251 /* Emit method info */
2253 emit_label (acfg, symbol);
2255 g_assert (p - buf < buf_size);
2256 emit_bytes (acfg, buf, p - buf);
2263 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
2267 guint32 debug_info_size;
2270 MonoMethodHeader *header;
2271 guint8 *p, *buf, *debug_info;
2273 method = cfg->method;
2274 code = cfg->native_code;
2275 header = mono_method_get_header (method);
2277 /* Make the labels local */
2278 symbol = g_strdup_printf (".Le_%x_p", mono_metadata_token_index (method->token));
2280 buf_size = header->num_clauses * 256 + 128;
2281 p = buf = g_malloc (buf_size);
2283 encode_value (cfg->code_len, p, &p);
2284 encode_value (cfg->used_int_regs, p, &p);
2286 /* Exception table */
2287 if (header->num_clauses) {
2288 MonoJitInfo *jinfo = cfg->jit_info;
2290 for (k = 0; k < header->num_clauses; ++k) {
2291 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
2293 encode_value (ei->exvar_offset, p, &p);
2295 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
2296 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
2298 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
2299 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
2300 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
2304 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
2306 encode_value (debug_info_size, p, &p);
2307 if (debug_info_size) {
2308 memcpy (p, debug_info, debug_info_size);
2309 p += debug_info_size;
2310 g_free (debug_info);
2313 acfg->stats.ex_info_size += p - buf;
2317 emit_label (acfg, symbol);
2319 g_assert (p - buf < buf_size);
2320 emit_bytes (acfg, buf, p - buf);
2327 emit_klass_info (MonoAotCompile *acfg, guint32 token)
2329 MonoClass *klass = mono_class_get (acfg->image, token);
2333 gboolean no_special_static;
2336 p = buf = g_malloc (buf_size);
2340 mono_class_init (klass);
2343 * Emit all the information which is required for creating vtables so
2344 * the runtime does not need to create the MonoMethod structures which
2345 * take up a lot of space.
2348 no_special_static = !mono_class_has_special_static_fields (klass);
2350 if (klass->generic_container) {
2351 encode_value (-1, p, &p);
2353 encode_value (klass->vtable_size, p, &p);
2354 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);
2355 if (klass->has_cctor)
2356 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
2357 if (klass->has_finalize)
2358 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
2360 encode_value (klass->instance_size, p, &p);
2361 encode_value (mono_class_data_size (klass), p, &p);
2362 encode_value (klass->packing_size, p, &p);
2363 encode_value (klass->min_align, p, &p);
2365 for (i = 0; i < klass->vtable_size; ++i) {
2366 MonoMethod *cm = klass->vtable [i];
2369 encode_method_ref (acfg, cm, p, &p);
2371 encode_value (0, p, &p);
2375 acfg->stats.class_info_size += p - buf;
2378 label = g_strdup_printf (".LK_I_%x", token - MONO_TOKEN_TYPE_DEF - 1);
2379 emit_label (acfg, label);
2381 g_assert (p - buf < buf_size);
2382 emit_bytes (acfg, buf, p - buf);
2387 * Calls made from AOTed code are routed through a table of jumps similar to the
2388 * ELF PLT (Program Linkage Table). The differences are the following:
2389 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
2390 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
2391 * jumps. This means the jumps need to be patched when the address of the callee is
2392 * known. Initially the PLT entries jump to code which transfer control to the
2393 * AOT runtime through the first PLT entry.
2396 emit_plt (MonoAotCompile *acfg)
2401 guint32 *plt_info_offsets;
2404 * Encode info need to resolve PLT entries.
2406 buf_size = acfg->plt_offset * 128;
2407 p = buf = g_malloc (buf_size);
2409 plt_info_offsets = g_new0 (guint32, acfg->plt_offset);
2411 for (i = 1; i < acfg->plt_offset; ++i) {
2412 MonoJumpInfo *patch_info = g_hash_table_lookup (acfg->plt_offset_to_patch, GUINT_TO_POINTER (i));
2414 plt_info_offsets [i] = p - buf;
2415 encode_value (patch_info->type, p, &p);
2416 encode_patch (acfg, patch_info, p, &p, FALSE);
2420 symbol = g_strdup_printf ("plt");
2422 /* This section will be made read-write by the AOT loader */
2423 emit_section_change (acfg, ".text", 0);
2424 emit_global (acfg, symbol, TRUE);
2425 emit_alignment (acfg, PAGESIZE);
2426 emit_label (acfg, symbol);
2429 * The first plt entry is used to transfer code to the AOT loader.
2431 emit_label (acfg, ".Lp_0");
2432 #if defined(__i386__)
2433 /* It is filled up during loading by the AOT loader. */
2434 emit_zero_bytes (acfg, 16);
2435 #elif defined(__x86_64__)
2436 /* This should be exactly 16 bytes long */
2437 /* jmpq *<offset>(%rip) */
2438 emit_byte (acfg, '\xff');
2439 emit_byte (acfg, '\x25');
2440 emit_symbol_diff (acfg, "plt_jump_table", ".", -4);
2441 emit_zero_bytes (acfg, 10);
2443 g_assert_not_reached ();
2446 for (i = 1; i < acfg->plt_offset; ++i) {
2449 label = g_strdup_printf (".Lp_%d", i);
2450 emit_label (acfg, label);
2452 #if defined(__i386__)
2453 /* Need to make sure this is 5 bytes long */
2454 emit_byte (acfg, '\xe9');
2455 label = g_strdup_printf (".Lpd_%d", i);
2456 emit_symbol_diff (acfg, label, ".", -4);
2458 #elif defined(__x86_64__)
2460 * We can't emit jumps because they are 32 bits only so they can't be patched.
2461 * So we emit a jump table instead whose entries are patched by the AOT loader to
2462 * point to .Lpd entries. ELF stores these in the GOT too, but we don't, since
2463 * methods with GOT entries can't be called directly.
2464 * We also emit the default PLT code here since the PLT code will not be patched.
2465 * An x86_64 plt entry is 16 bytes long, init_plt () depends on this.
2467 /* jmpq *<offset>(%rip) */
2468 emit_byte (acfg, '\xff');
2469 emit_byte (acfg, '\x25');
2470 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)) -4);
2471 /* mov <plt info offset>, %eax */
2472 emit_byte (acfg, '\xb8');
2473 emit_int32 (acfg, plt_info_offsets [i]);
2475 emit_byte (acfg, '\xe9');
2476 emit_symbol_diff (acfg, ".Lp_0", ".", -4);
2478 g_assert_not_reached ();
2482 symbol = g_strdup_printf ("plt_end");
2483 emit_global (acfg, symbol, TRUE);
2484 emit_label (acfg, symbol);
2487 * Emit the default targets for the PLT entries separately since these will not
2488 * be modified at runtime.
2490 for (i = 1; i < acfg->plt_offset; ++i) {
2493 label = g_strdup_printf (".Lpd_%d", i);
2494 emit_label (acfg, label);
2497 /* Put the offset into the register expected by mono_aot_plt_trampoline */
2498 #if defined(__i386__)
2499 /* movl $const, %eax */
2500 emit_byte (acfg, '\xb8');
2501 emit_int32 (acfg, plt_info_offsets [i]);
2503 emit_byte (acfg, '\xe9');
2504 emit_symbol_diff (acfg, ".Lp_0", ".", -4);
2505 #elif defined(__x86_64__)
2506 /* Emitted along with the PLT entries since they will not be patched */
2508 g_assert_not_reached ();
2513 symbol = g_strdup_printf ("plt_info");
2514 emit_global (acfg, symbol, FALSE);
2515 emit_label (acfg, symbol);
2517 g_assert (p - buf < buf_size);
2518 emit_bytes (acfg, buf, p - buf);
2521 symbol = g_strdup_printf ("plt_jump_table_addr");
2522 emit_section_change (acfg, ".data", 0);
2523 emit_global (acfg, symbol, FALSE);
2524 emit_alignment (acfg, 8);
2525 emit_label (acfg, symbol);
2526 emit_pointer (acfg, "plt_jump_table");
2528 symbol = g_strdup_printf ("plt_jump_table_size");
2529 emit_section_change (acfg, ".data", 0);
2530 emit_global (acfg, symbol, FALSE);
2531 emit_alignment (acfg, 8);
2532 emit_label (acfg, symbol);
2533 emit_symbol_diff (acfg, "plt_jump_table_end", "plt_jump_table", 0);
2535 /* Don't make this a global so accesses don't need relocations */
2536 symbol = g_strdup_printf ("plt_jump_table");
2537 emit_section_change (acfg, ".bss", 0);
2538 emit_label (acfg, symbol);
2541 emit_zero_bytes (acfg, (int)(acfg->plt_offset * sizeof (gpointer)));
2544 symbol = g_strdup_printf ("plt_jump_table_end");
2545 emit_label (acfg, symbol);
2549 str_begins_with (const char *str1, const char *str2)
2551 int len = strlen (str2);
2552 return strncmp (str1, str2, len) == 0;
2556 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
2558 gchar **args, **ptr;
2560 memset (opts, 0, sizeof (*opts));
2562 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
2563 for (ptr = args; ptr && *ptr; ptr ++) {
2564 const char *arg = *ptr;
2566 if (str_begins_with (arg, "outfile=")) {
2567 opts->outfile = g_strdup (arg + strlen ("outfile="));
2568 } else if (str_begins_with (arg, "save-temps")) {
2569 opts->save_temps = TRUE;
2570 } else if (str_begins_with (arg, "keep-temps")) {
2571 opts->save_temps = TRUE;
2572 } else if (str_begins_with (arg, "write-symbols")) {
2573 opts->write_symbols = TRUE;
2574 } else if (str_begins_with (arg, "metadata-only")) {
2575 opts->metadata_only = TRUE;
2577 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
2584 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
2586 MonoMethod *method = (MonoMethod*)key;
2587 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
2588 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
2589 MonoAotCompile *acfg = user_data;
2591 new_ji->image = ji->image;
2592 new_ji->token = ji->token;
2593 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
2597 compile_method (MonoAotCompile *acfg, int index)
2601 MonoJumpInfo *patch_info;
2603 guint32 token = MONO_TOKEN_METHOD_DEF | (index + 1);
2606 if (acfg->aot_opts.metadata_only)
2609 method = mono_get_method (acfg->image, token, NULL);
2611 method_idx = mono_metadata_token_index (method->token);
2613 /* fixme: maybe we can also precompile wrapper methods */
2614 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
2615 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2616 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2617 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
2618 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
2622 acfg->stats.mcount++;
2624 /* fixme: we need to patch the IP for the LMF in that case */
2625 if (method->save_lmf) {
2626 //printf ("Skip (needs lmf): %s\n", mono_method_full_name (method, TRUE));
2627 acfg->stats.lmfcount++;
2631 if (mono_method_signature (method)->has_type_parameters || method->klass->generic_container) {
2632 acfg->stats.genericcount ++;
2637 * Since these methods are the only ones which are compiled with
2638 * AOT support, and they are not used by runtime startup/shutdown code,
2639 * the runtime will not see AOT methods during AOT compilation,so it
2640 * does not need to support them by creating a fake GOT etc.
2642 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
2643 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
2644 /* Let the exception happen at runtime */
2648 if (cfg->disable_aot) {
2649 //printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
2650 acfg->stats.ocount++;
2651 mono_destroy_compile (cfg);
2655 /* Collect method->token associations from the cfg */
2656 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
2659 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2660 switch (patch_info->type) {
2661 case MONO_PATCH_INFO_ABS:
2662 /* unable to handle this */
2663 //printf ("Skip (abs addr): %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
2672 acfg->stats.abscount++;
2673 mono_destroy_compile (cfg);
2678 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2679 if (patch_info->type == MONO_PATCH_INFO_METHOD_JUMP) {
2681 * FIXME: We can't handle this because mono_jit_compile_method_inner will try
2682 * to patch the AOT code when the target of the jump is compiled.
2690 acfg->stats.ocount++;
2691 mono_destroy_compile (cfg);
2695 /* some wrappers are very common */
2696 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2697 if (patch_info->type == MONO_PATCH_INFO_METHODCONST) {
2698 switch (patch_info->data.method->wrapper_type) {
2699 case MONO_WRAPPER_PROXY_ISINST:
2700 patch_info->type = MONO_PATCH_INFO_WRAPPER;
2704 if (patch_info->type == MONO_PATCH_INFO_METHOD) {
2705 switch (patch_info->data.method->wrapper_type) {
2706 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2707 case MONO_WRAPPER_STFLD:
2708 case MONO_WRAPPER_LDFLD:
2709 case MONO_WRAPPER_LDFLDA:
2710 case MONO_WRAPPER_LDFLD_REMOTE:
2711 case MONO_WRAPPER_STFLD_REMOTE:
2712 case MONO_WRAPPER_STELEMREF:
2713 case MONO_WRAPPER_ISINST:
2714 case MONO_WRAPPER_PROXY_ISINST:
2715 patch_info->type = MONO_PATCH_INFO_WRAPPER;
2722 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2723 switch (patch_info->type) {
2724 case MONO_PATCH_INFO_METHOD:
2725 case MONO_PATCH_INFO_METHODCONST:
2726 if (patch_info->data.method->wrapper_type) {
2727 /* unable to handle this */
2728 //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));
2732 if (!patch_info->data.method->token)
2734 * The method is part of a constructed type like Int[,].Set (). It doesn't
2735 * have a token, and we can't make one, since the parent type is part of
2736 * assembly which contains the element type, and not the assembly which
2737 * referenced this type.
2741 case MONO_PATCH_INFO_VTABLE:
2742 case MONO_PATCH_INFO_CLASS_INIT:
2743 case MONO_PATCH_INFO_CLASS:
2744 case MONO_PATCH_INFO_IID:
2745 case MONO_PATCH_INFO_ADJUSTED_IID:
2746 if (!patch_info->data.klass->type_token)
2747 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))
2756 acfg->stats.wrappercount++;
2757 mono_destroy_compile (cfg);
2761 /* Determine whenever the method has GOT slots */
2762 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2763 switch (patch_info->type) {
2764 case MONO_PATCH_INFO_LABEL:
2765 case MONO_PATCH_INFO_BB:
2766 case MONO_PATCH_INFO_GOT_OFFSET:
2767 case MONO_PATCH_INFO_NONE:
2768 case MONO_PATCH_INFO_METHOD:
2769 case MONO_PATCH_INFO_INTERNAL_METHOD:
2770 case MONO_PATCH_INFO_WRAPPER:
2772 case MONO_PATCH_INFO_IMAGE:
2773 if (patch_info->data.image == acfg->image)
2774 /* Stored in GOT slot 0 */
2778 acfg->has_got_slots [method_idx] = TRUE;
2783 if (!acfg->has_got_slots [method_idx])
2784 acfg->stats.methods_without_got_slots ++;
2786 /* Make a copy of the patch info which is in the mempool */
2788 MonoJumpInfo *patches = NULL, *patches_end = NULL;
2790 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2791 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
2794 patches = new_patch_info;
2796 patches_end->next = new_patch_info;
2797 patches_end = new_patch_info;
2799 cfg->patch_info = patches;
2802 /* Free some fields used by cfg to conserve memory */
2803 mono_mempool_destroy (cfg->mempool);
2804 cfg->mempool = NULL;
2805 g_free (cfg->varinfo);
2806 cfg->varinfo = NULL;
2810 mono_regstate_free (cfg->rs);
2814 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
2816 acfg->cfgs [index] = cfg;
2818 g_hash_table_insert (acfg->method_to_cfg, cfg->method, cfg);
2820 acfg->stats.ccount++;
2824 load_profile_files (MonoAotCompile *acfg)
2828 int file_index, res, method_index, i;
2834 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);
2836 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR))
2839 infile = fopen (tmp, "r");
2842 printf ("Using profile data file '%s'\n", tmp);
2846 res = fscanf (infile, "%32s\n", ver);
2847 if ((res != 1) || strcmp (ver, "#VER:1") != 0) {
2848 printf ("Profile file has wrong version or invalid.\n");
2854 res = fscanf (infile, "%d\n", &token);
2858 method_index = mono_metadata_token_index (token) - 1;
2860 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index)))
2861 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
2866 /* Add missing methods */
2867 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2868 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
2869 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (i));
2876 * Collect all patches which have shared GOT entries and alloc entries for them. The
2877 * rest will get entries allocated during emit_code ().
2880 alloc_got_slots (MonoAotCompile *acfg)
2886 /* Slot 0 is reserved for the address of the current assembly */
2887 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
2888 ji->type = MONO_PATCH_INFO_IMAGE;
2889 ji->data.image = acfg->image;
2891 get_shared_got_offset (acfg, ji);
2893 for (l = acfg->method_order; l != NULL; l = l->next) {
2894 i = GPOINTER_TO_UINT (l->data);
2896 if (acfg->cfgs [i]) {
2897 MonoCompile *cfg = acfg->cfgs [i];
2899 for (ji = cfg->patch_info; ji; ji = ji->next) {
2901 case MONO_PATCH_INFO_VTABLE:
2902 case MONO_PATCH_INFO_CLASS:
2903 case MONO_PATCH_INFO_IID:
2904 case MONO_PATCH_INFO_ADJUSTED_IID:
2905 case MONO_PATCH_INFO_FIELD:
2906 case MONO_PATCH_INFO_SFLDA:
2907 case MONO_PATCH_INFO_DECLSEC:
2908 case MONO_PATCH_INFO_LDTOKEN:
2909 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2910 case MONO_PATCH_INFO_RVA:
2911 get_shared_got_offset (acfg, ji);
2922 emit_code (MonoAotCompile *acfg)
2928 symbol = g_strdup_printf ("methods");
2929 emit_section_change (acfg, ".text", 0);
2930 emit_global (acfg, symbol, TRUE);
2931 emit_alignment (acfg, 8);
2932 emit_label (acfg, symbol);
2934 for (l = acfg->method_order; l != NULL; l = l->next) {
2935 i = GPOINTER_TO_UINT (l->data);
2938 emit_method_code (acfg, acfg->cfgs [i]);
2941 symbol = g_strdup_printf ("methods_end");
2942 emit_section_change (acfg, ".text", 0);
2943 emit_global (acfg, symbol, FALSE);
2944 emit_alignment (acfg, 8);
2945 emit_label (acfg, symbol);
2947 symbol = g_strdup_printf ("method_offsets");
2948 emit_section_change (acfg, ".text", 1);
2949 emit_global (acfg, symbol, FALSE);
2950 emit_alignment (acfg, 8);
2951 emit_label (acfg, symbol);
2953 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2954 if (acfg->cfgs [i]) {
2955 symbol = g_strdup_printf (".Lm_%x", i + 1);
2956 emit_symbol_diff (acfg, symbol, "methods", 0);
2958 emit_int32 (acfg, 0xffffffff);
2965 emit_info (MonoAotCompile *acfg)
2971 /* Emit method info */
2972 symbol = g_strdup_printf ("method_info");
2973 emit_section_change (acfg, ".text", 1);
2974 emit_global (acfg, symbol, FALSE);
2975 emit_alignment (acfg, 8);
2976 emit_label (acfg, symbol);
2978 /* To reduce size of generated assembly code */
2979 symbol = g_strdup_printf ("mi");
2980 emit_label (acfg, symbol);
2982 for (l = acfg->method_order; l != NULL; l = l->next) {
2983 i = GPOINTER_TO_UINT (l->data);
2986 emit_method_info (acfg, acfg->cfgs [i]);
2989 symbol = g_strdup_printf ("method_info_offsets");
2990 emit_section_change (acfg, ".text", 1);
2991 emit_global (acfg, symbol, FALSE);
2992 emit_alignment (acfg, 8);
2993 emit_label (acfg, symbol);
2995 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2996 if (acfg->cfgs [i]) {
2997 symbol = g_strdup_printf (".Lm_%x_p", i + 1);
2998 emit_symbol_diff (acfg, symbol, "mi", 0);
3000 emit_int32 (acfg, 0);
3007 emit_method_order (MonoAotCompile *acfg)
3013 symbol = g_strdup_printf ("method_order");
3014 emit_section_change (acfg, ".text", 1);
3015 emit_global (acfg, symbol, FALSE);
3016 emit_alignment (acfg, 8);
3017 emit_label (acfg, symbol);
3019 /* First emit an index table */
3022 for (l = acfg->method_order; l != NULL; l = l->next) {
3023 i = GPOINTER_TO_UINT (l->data);
3025 if (acfg->cfgs [i]) {
3026 if ((index % 1024) == 0) {
3027 emit_int32 (acfg, i);
3035 emit_int32 (acfg, 0xffffff);
3037 /* Then emit the whole method order */
3038 for (l = acfg->method_order; l != NULL; l = l->next) {
3039 i = GPOINTER_TO_UINT (l->data);
3041 if (acfg->cfgs [i]) {
3042 emit_int32 (acfg, i);
3047 symbol = g_strdup_printf ("method_order_end");
3048 emit_section_change (acfg, ".text", 1);
3049 emit_global (acfg, symbol, FALSE);
3050 emit_label (acfg, symbol);
3054 emit_exception_info (MonoAotCompile *acfg)
3059 symbol = g_strdup_printf ("ex_info");
3060 emit_section_change (acfg, ".text", 1);
3061 emit_global (acfg, symbol, FALSE);
3062 emit_alignment (acfg, 8);
3063 emit_label (acfg, symbol);
3065 /* To reduce size of generate assembly */
3066 symbol = g_strdup_printf ("ex");
3067 emit_label (acfg, symbol);
3069 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3071 emit_exception_debug_info (acfg, acfg->cfgs [i]);
3074 symbol = g_strdup_printf ("ex_info_offsets");
3075 emit_section_change (acfg, ".text", 1);
3076 emit_global (acfg, symbol, FALSE);
3077 emit_alignment (acfg, 8);
3078 emit_label (acfg, symbol);
3080 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3081 if (acfg->cfgs [i]) {
3082 symbol = g_strdup_printf (".Le_%x_p", i + 1);
3083 emit_symbol_diff (acfg, symbol, "ex", 0);
3085 emit_int32 (acfg, 0);
3092 emit_class_info (MonoAotCompile *acfg)
3097 symbol = g_strdup_printf ("class_info");
3098 emit_section_change (acfg, ".text", 1);
3099 emit_global (acfg, symbol, FALSE);
3100 emit_alignment (acfg, 8);
3101 emit_label (acfg, symbol);
3103 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
3104 emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
3106 symbol = g_strdup_printf ("class_info_offsets");
3107 emit_section_change (acfg, ".text", 1);
3108 emit_global (acfg, symbol, FALSE);
3109 emit_alignment (acfg, 8);
3110 emit_label (acfg, symbol);
3112 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3113 symbol = g_strdup_printf (".LK_I_%x", i);
3114 emit_symbol_diff (acfg, symbol, "class_info", 0);
3119 typedef struct ClassNameTableEntry {
3120 guint32 token, index;
3121 struct ClassNameTableEntry *next;
3122 } ClassNameTableEntry;
3125 emit_class_name_table (MonoAotCompile *acfg)
3128 guint32 token, hash;
3133 ClassNameTableEntry *entry, *new_entry;
3136 * Construct a chained hash table for mapping class names to typedef tokens.
3138 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
3139 table = g_ptr_array_sized_new (table_size);
3140 for (i = 0; i < table_size; ++i)
3141 g_ptr_array_add (table, NULL);
3142 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3143 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3144 klass = mono_class_get (acfg->image, token);
3145 full_name = mono_type_get_full_name (klass);
3146 hash = g_str_hash (full_name) % table_size;
3148 //printf ("A: '%s' %d %d\n", full_name, g_str_hash (full_name), hash);
3150 /* FIXME: Allocate from the mempool */
3151 new_entry = g_new0 (ClassNameTableEntry, 1);
3152 new_entry->token = token;
3154 entry = g_ptr_array_index (table, hash);
3155 if (entry == NULL) {
3156 new_entry->index = hash;
3157 g_ptr_array_index (table, hash) = new_entry;
3160 entry = entry->next;
3162 entry->next = new_entry;
3163 new_entry->index = table->len;
3164 g_ptr_array_add (table, new_entry);
3168 /* Emit the table */
3169 symbol = g_strdup_printf ("class_name_table");
3170 emit_section_change (acfg, ".text", 0);
3171 emit_global (acfg, symbol, FALSE);
3172 emit_alignment (acfg, 8);
3173 emit_label (acfg, symbol);
3175 /* FIXME: Optimize memory usage */
3176 g_assert (table_size < 65000);
3177 emit_int16 (acfg, table_size);
3178 g_assert (table->len < 65000);
3179 for (i = 0; i < table->len; ++i) {
3180 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
3182 if (entry == NULL) {
3183 emit_int16 (acfg, 0);
3184 emit_int16 (acfg, 0);
3186 emit_int16 (acfg, mono_metadata_token_index (entry->token));
3188 emit_int16 (acfg, entry->next->index);
3190 emit_int16 (acfg, 0);
3196 emit_image_table (MonoAotCompile *acfg)
3202 * The image table is small but referenced in a lot of places.
3203 * So we emit it at once, and reference its elements by an index.
3206 symbol = g_strdup_printf ("mono_image_table");
3207 emit_section_change (acfg, ".text", 1);
3208 emit_global (acfg, symbol, FALSE);
3209 emit_alignment (acfg, 8);
3210 emit_label (acfg, symbol);
3211 emit_int32 (acfg, acfg->image_table->len);
3212 for (i = 0; i < acfg->image_table->len; i++) {
3213 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
3214 MonoAssemblyName *aname = &image->assembly->aname;
3216 /* FIXME: Support multi-module assemblies */
3217 g_assert (image->assembly->image == image);
3219 emit_string (acfg, image->assembly_name);
3220 emit_string (acfg, image->guid);
3221 emit_string (acfg, aname->culture ? aname->culture : "");
3222 emit_string (acfg, (const char*)aname->public_key_token);
3224 emit_alignment (acfg, 8);
3225 emit_int32 (acfg, aname->flags);
3226 emit_int32 (acfg, aname->major);
3227 emit_int32 (acfg, aname->minor);
3228 emit_int32 (acfg, aname->build);
3229 emit_int32 (acfg, aname->revision);
3234 emit_got_info (MonoAotCompile *acfg)
3239 guint32 *got_info_offsets;
3243 * - optimize offsets table.
3244 * - reduce number of exported symbols.
3245 * - emit info for a klass only once.
3246 * - determine when a method uses a GOT slot which is guaranteed to be already
3248 * - clean up and document the code.
3249 * - use String.Empty in class libs.
3252 /* Encode info required to decode shared GOT entries */
3253 buf_size = acfg->shared_patches->len * 64;
3254 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
3255 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->shared_patches->len * sizeof (guint32));
3256 for (i = 0; i < acfg->shared_patches->len; ++i) {
3257 MonoJumpInfo *ji = g_ptr_array_index (acfg->shared_patches, i);
3259 /* No need to encode the patch type */
3260 got_info_offsets [i] = p - buf;
3261 encode_patch (acfg, ji, p, &p, FALSE);
3264 g_assert (p - buf <= buf_size);
3266 acfg->stats.got_info_size = p - buf;
3268 /* Emit got_info table */
3269 symbol = g_strdup_printf ("got_info");
3270 emit_section_change (acfg, ".text", 1);
3271 emit_global (acfg, symbol, FALSE);
3272 emit_alignment (acfg, 8);
3273 emit_label (acfg, symbol);
3275 emit_bytes (acfg, buf, p - buf);
3277 /* Emit got_info_offsets table */
3278 symbol = g_strdup_printf ("got_info_offsets");
3279 emit_section_change (acfg, ".text", 1);
3280 emit_global (acfg, symbol, FALSE);
3281 emit_alignment (acfg, 8);
3282 emit_label (acfg, symbol);
3284 for (i = 0; i < acfg->shared_patches->len; ++i)
3285 emit_int32 (acfg, got_info_offsets [i]);
3287 acfg->stats.got_info_offsets_size = acfg->shared_patches->len * 4;
3291 emit_got (MonoAotCompile *acfg)
3295 /* Don't make GOT global so accesses to it don't need relocations */
3296 symbol = g_strdup_printf ("got");
3297 emit_section_change (acfg, ".bss", 1);
3298 emit_alignment (acfg, 8);
3299 emit_label (acfg, symbol);
3300 if (acfg->got_offset > 0)
3301 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
3303 symbol = g_strdup_printf ("got_addr");
3304 emit_section_change (acfg, ".data", 1);
3305 emit_global (acfg, symbol, FALSE);
3306 emit_alignment (acfg, 8);
3307 emit_label (acfg, symbol);
3308 emit_pointer (acfg, "got");
3310 symbol = g_strdup_printf ("got_size");
3311 emit_section_change (acfg, ".data", 1);
3312 emit_global (acfg, symbol, FALSE);
3313 emit_alignment (acfg, 8);
3314 emit_label (acfg, symbol);
3315 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
3319 emit_globals (MonoAotCompile *acfg)
3323 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
3325 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
3327 opts_str = g_strdup_printf ("%d", acfg->opts);
3328 emit_string_symbol (acfg, "mono_aot_opt_flags", opts_str);
3333 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
3335 MonoImage *image = ass->image;
3338 MonoAotCompile *acfg;
3341 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
3343 acfg = g_new0 (MonoAotCompile, 1);
3344 acfg->plt_offset_to_patch = g_hash_table_new (NULL, NULL);
3345 acfg->patch_to_plt_offset = g_hash_table_new (NULL, NULL);
3346 acfg->patch_to_shared_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
3347 acfg->shared_patches = g_ptr_array_new ();
3348 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
3349 acfg->token_info_hash = g_hash_table_new (NULL, NULL);
3350 acfg->image_hash = g_hash_table_new (NULL, NULL);
3351 acfg->image_table = g_ptr_array_new ();
3352 acfg->image = image;
3354 acfg->mempool = mono_mempool_new ();
3356 mono_aot_parse_options (aot_options, &acfg->aot_opts);
3358 load_profile_files (acfg);
3361 if (mono_defaults.generic_nullable_class) {
3363 * FIXME: Its hard to skip generic methods or methods which use generics.
3365 printf ("Error: Can't AOT Net 2.0 assemblies.\n");
3372 cfgs = g_new0 (MonoCompile*, image->tables [MONO_TABLE_METHOD].rows + 32);
3374 acfg->nmethods = image->tables [MONO_TABLE_METHOD].rows;
3375 acfg->method_got_offsets = g_new0 (guint32, image->tables [MONO_TABLE_METHOD].rows + 32);
3376 acfg->has_got_slots = g_new0 (gboolean, image->tables [MONO_TABLE_METHOD].rows + 32);
3378 /* PLT offset 0 is reserved for the PLT trampoline */
3379 acfg->plt_offset = 1;
3381 /* Compile methods */
3382 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i)
3383 compile_method (acfg, i);
3385 alloc_got_slots (acfg);
3391 emit_method_order (acfg);
3393 emit_class_name_table (acfg);
3395 emit_got_info (acfg);
3397 emit_exception_info (acfg);
3399 emit_class_info (acfg);
3403 emit_image_table (acfg);
3407 emit_globals (acfg);
3409 symbol = g_strdup_printf ("mem_end");
3410 emit_section_change (acfg, ".text", 1);
3411 emit_global (acfg, symbol, FALSE);
3412 emit_alignment (acfg, 8);
3413 emit_label (acfg, symbol);
3415 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)));
3417 emit_writeout (acfg);
3419 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);
3420 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
3421 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
3422 printf ("%d methods contain wrapper references (%d%%)\n", acfg->stats.wrappercount, acfg->stats.mcount ? (acfg->stats.wrappercount * 100) / acfg->stats.mcount : 100);
3423 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
3424 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
3425 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);
3426 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
3428 printf ("GOT slot distribution:\n");
3429 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
3430 if (acfg->stats.got_slot_types [i])
3431 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
3441 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)