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.
11 /* Remaining AOT-only work:
12 * - reduce the length of the wrapper names.
13 * - during loading, collect the names into a hashtable to avoid linear
15 * - aot IMT tables, so we don't have two kinds of aot code.
16 * - optimize the trampolines, generate more code in the arch files.
17 * - make things more consistent with how elf works, for example, use ELF
19 * Remaining generics sharing work:
20 * - optimize the size of the data which is encoded.
21 * - optimize the runtime loading of data:
22 * - the trampoline code calls mono_jit_info_table_find () to find the rgctx,
23 * which loads the debugging+exception handling info for the method. This is a
24 * huge waste of time and code, since the rgctx structure is currently empty.
25 * - every shared method has a MonoGenericJitInfo structure which is only really
26 * used for handling catch clauses with open types, not a very common use case.
30 #include <sys/types.h>
36 #ifndef PLATFORM_WIN32
45 #include <limits.h> /* for PAGESIZE */
50 #include <mono/metadata/tabledefs.h>
51 #include <mono/metadata/class.h>
52 #include <mono/metadata/object.h>
53 #include <mono/metadata/tokentype.h>
54 #include <mono/metadata/appdomain.h>
55 #include <mono/metadata/debug-helpers.h>
56 #include <mono/metadata/assembly.h>
57 #include <mono/metadata/metadata-internals.h>
58 #include <mono/metadata/marshal.h>
59 #include <mono/metadata/gc-internal.h>
60 #include <mono/metadata/method-builder.h>
61 #include <mono/utils/mono-logger.h>
62 #include "mono/utils/mono-compiler.h"
70 #define SHARED_EXT ".dll"
71 #elif defined(__ppc__) && defined(__MACH__)
72 #define SHARED_EXT ".dylib"
74 #define SHARED_EXT ".so"
77 #if defined(sparc) || defined(__ppc__) || defined(__MACH__)
78 #define AS_STRING_DIRECTIVE ".asciz"
81 #define AS_STRING_DIRECTIVE ".string"
86 // .byte generates 1 byte per expression.
87 // .short generates 2 bytes per expression.
88 // .long generates 4 bytes per expression.
89 // .quad generates 8 bytes per expression.
91 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
92 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
94 typedef struct MonoAotOptions {
97 gboolean write_symbols;
98 gboolean metadata_only;
99 gboolean bind_to_runtime_version;
102 gboolean static_link;
105 typedef struct MonoAotStats {
106 int ccount, mcount, lmfcount, abscount, wrappercount, gcount, ocount, genericcount;
107 int code_size, info_size, ex_info_size, got_size, class_info_size, got_info_size, got_info_offsets_size;
108 int methods_without_got_slots, direct_calls, all_calls;
110 int got_slot_types [MONO_PATCH_INFO_NONE];
113 /*#define USE_ELF_WRITER 1*/
115 #if defined(USE_ELF_WRITER)
116 #define USE_BIN_WRITER 1
119 #ifdef USE_BIN_WRITER
121 typedef struct _BinSymbol BinSymbol;
122 typedef struct _BinReloc BinReloc;
123 typedef struct _BinSection BinSection;
137 typedef struct MonoAotCompile {
140 GHashTable *method_indexes;
142 GHashTable *patch_to_plt_offset;
143 GHashTable *plt_offset_to_patch;
144 GHashTable *patch_to_shared_got_offset;
145 GPtrArray *shared_patches;
146 GHashTable *image_hash;
147 GHashTable *method_to_cfg;
148 GHashTable *token_info_hash;
149 GPtrArray *image_table;
152 /* Number of trampolines emitted into the AOT file */
153 guint32 num_aot_trampolines;
154 guint32 got_offset, plt_offset;
155 /* Number of GOT entries reserved for trampolines */
156 guint32 num_trampoline_got_entries;
157 guint32 *method_got_offsets;
158 MonoAotOptions aot_opts;
161 MonoMemPool *mempool;
164 char *static_linking_symbol;
165 #ifdef USE_BIN_WRITER
167 BinSection *sections;
168 BinSection *cur_section;
169 BinReloc *relocations;
175 int mode; /* emit mode */
176 int col_count; /* bytes emitted per .byte line */
180 #ifdef HAVE_ARRAY_ELEM_INIT
181 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
182 #define MSGSTRFIELD1(line) str##line
183 static const struct msgstr_t {
184 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
185 #include "patch-info.h"
188 #define PATCH_INFO(a,b) b,
189 #include "patch-info.h"
192 static const gint16 opidx [] = {
193 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
194 #include "patch-info.h"
199 get_patch_name (int info)
201 return (const char*)&opstr + opidx [info];
205 #define PATCH_INFO(a,b) b,
206 static const char* const
207 patch_types [MONO_PATCH_INFO_NUM + 1] = {
208 #include "patch-info.h"
213 get_patch_name (int info)
215 return patch_types [info];
221 emit_global (MonoAotCompile *acfg, const char *name, gboolean func);
224 is_got_patch (MonoJumpInfoType patch_type)
229 static G_GNUC_UNUSED int
230 ilog2(register int value)
233 while (value & ~0xf) count += 4, value >>= 4;
234 while (value) count++, value >>= 1;
238 #ifdef USE_BIN_WRITER
240 typedef struct _BinLabel BinLabel;
251 BinSection *val2_section;
263 gboolean is_function;
281 emit_start (MonoAotCompile *acfg)
283 acfg->labels = g_hash_table_new (g_str_hash, g_str_equal);
287 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
291 if (acfg->cur_section && acfg->cur_section->subsection == subsection_index
292 && strcmp (acfg->cur_section->name, section_name) == 0)
294 for (section = acfg->sections; section; section = section->next) {
295 if (section->subsection == subsection_index && strcmp (section->name, section_name) == 0) {
296 acfg->cur_section = section;
301 section = g_new0 (BinSection, 1);
302 section->name = g_strdup (section_name);
303 section->subsection = subsection_index;
304 section->next = acfg->sections;
305 acfg->sections = section;
306 acfg->cur_section = section;
311 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
313 BinSymbol *symbol = g_new0 (BinSymbol, 1);
314 symbol->name = g_strdup (name);
315 symbol->is_function = func;
316 symbol->is_global = TRUE;
317 symbol->section = acfg->cur_section;
318 /* FIXME: we align after this call... */
319 symbol->offset = symbol->section->cur_offset;
320 symbol->next = acfg->symbols;
321 acfg->symbols = symbol;
325 emit_label (MonoAotCompile *acfg, const char *name)
327 BinLabel *label = g_new0 (BinLabel, 1);
328 label->name = g_strdup (name);
329 label->section = acfg->cur_section;
330 label->offset = acfg->cur_section->cur_offset;
331 g_hash_table_insert (acfg->labels, label->name, label);
335 emit_ensure_buffer (BinSection *section, int size)
337 int new_offset = section->cur_offset + size;
338 if (new_offset >= section->data_len) {
339 int new_size = section->data_len? section->data_len * 2: 256;
341 while (new_size <= new_offset)
343 data = g_malloc0 (new_size);
344 memcpy (data, section->data, section->data_len);
345 g_free (section->data);
346 section->data = data;
347 section->data_len = new_size;
352 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
354 emit_ensure_buffer (acfg->cur_section, size);
355 memcpy (acfg->cur_section->data + acfg->cur_section->cur_offset, buf, size);
356 acfg->cur_section->cur_offset += size;
360 emit_string (MonoAotCompile *acfg, const char *value)
362 int size = strlen (value) + 1;
363 emit_bytes (acfg, (const guint8*)value, size);
367 emit_line (MonoAotCompile *acfg)
369 /* Nothing to do in binary writer */
373 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
375 emit_section_change (acfg, ".text", 1);
376 emit_global (acfg, name, FALSE);
377 emit_label (acfg, name);
378 emit_string (acfg, value);
382 emit_alignment (MonoAotCompile *acfg, int size)
384 int offset = acfg->cur_section->cur_offset;
386 offset += (size - 1);
387 offset &= ~(size - 1);
388 add = offset - acfg->cur_section->cur_offset;
390 emit_ensure_buffer (acfg->cur_section, add);
391 acfg->cur_section->cur_offset += add;
396 emit_pointer (MonoAotCompile *acfg, const char *target)
402 g_assert_not_reached ();
403 emit_alignment (acfg, sizeof (gpointer));
404 reloc = g_new0 (BinReloc, 1);
405 reloc->val1 = g_strdup (target);
406 reloc->section = acfg->cur_section;
407 reloc->section_offset = acfg->cur_section->cur_offset;
408 reloc->next = acfg->relocations;
409 acfg->relocations = reloc;
410 if (strcmp (reloc->section->name, ".data") == 0) {
412 g_print ("reloc: %s at %d\n", target, acfg->cur_section->cur_offset);
414 acfg->cur_section->cur_offset += sizeof (gpointer);
418 emit_int16 (MonoAotCompile *acfg, int value)
421 emit_ensure_buffer (acfg->cur_section, 2);
422 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
423 acfg->cur_section->cur_offset += 2;
424 /* FIXME: little endian */
426 data [1] = value >> 8;
430 emit_int32 (MonoAotCompile *acfg, int value)
433 emit_ensure_buffer (acfg->cur_section, 4);
434 data = acfg->cur_section->data + acfg->cur_section->cur_offset;
435 acfg->cur_section->cur_offset += 4;
436 /* FIXME: little endian */
438 data [1] = value >> 8;
439 data [2] = value >> 16;
440 data [3] = value >> 24;
444 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
447 reloc = g_new0 (BinReloc, 1);
448 reloc->val1 = g_strdup (end);
449 if (strcmp (start, ".") == 0) {
450 reloc->val2_section = acfg->cur_section;
451 reloc->val2_offset = acfg->cur_section->cur_offset;
453 reloc->val2 = g_strdup (start);
455 reloc->offset = offset;
456 reloc->section = acfg->cur_section;
457 reloc->section_offset = acfg->cur_section->cur_offset;
458 reloc->next = acfg->relocations;
459 acfg->relocations = reloc;
460 acfg->cur_section->cur_offset += 4;
461 /*if (strcmp (reloc->section->name, ".data") == 0) {
463 g_print ("reloc: %s - %s + %d at %d\n", end, start, offset, acfg->cur_section->cur_offset - 4);
468 emit_zero_bytes (MonoAotCompile *acfg, int num)
470 emit_ensure_buffer (acfg->cur_section, num);
471 acfg->cur_section->cur_offset += num;
474 #ifdef USE_ELF_WRITER
509 DYN_RELCOUNT = 0x6ffffffa
512 static const char* section_names [] = {
528 static const guint8 section_type [] = {
533 static const guint8 section_link [] = {
534 0, 2, 3, 0, 2, 0, 3, 0, 0, 0, 0, 12, 0
537 static const guint8 section_esize [] = {
538 0, 4, 16, 0, 8, 0, 8, 4, 0, 0, 0, 16, 0
541 static const guint8 section_flags [] = {
542 0, 2, 2, 2, 2, 6, 3, 3, 3, 3, 0, 0, 0
545 static const guint16 section_align [] = {
546 0, 4, 4, 1, 4, 4096, 4, 4, 8, 8, 1, 4, 1
566 struct ElfSectHeader {
579 #if SIZEOF_VOID_P == 4
581 struct ElfProgHeader {
613 struct ElfProgHeader {
657 str_table_add (ElfStrTable *table, const char* value)
661 table->data = g_string_new_len ("", 1);
662 table->hash = g_hash_table_new (g_str_hash, g_str_equal);
664 idx = GPOINTER_TO_UINT (g_hash_table_lookup (table->hash, value));
667 idx = table->data->len;
668 g_string_append (table->data, value);
669 g_string_append_c (table->data, 0);
670 g_hash_table_insert (table->hash, (void*)value, GUINT_TO_POINTER (idx));
675 append_subsection (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection *sect, BinSection *add)
677 int offset = sect->cur_offset;
678 /*offset += (sheaders [sect->shidx].sh_addralign - 1);
679 offset &= ~(sheaders [sect->shidx].sh_addralign - 1);*/
682 emit_ensure_buffer (sect, offset);
683 g_print ("section %s aligned to %d from %d\n", sect->name, offset, sect->cur_offset);
684 sect->cur_offset = offset;
686 emit_ensure_buffer (sect, add->cur_offset);
687 memcpy (sect->data + sect->cur_offset, add->data, add->cur_offset);
689 sect->cur_offset += add->cur_offset;
690 add->cur_offset = offset; /* it becomes the offset in the parent section */
691 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);
696 /* merge the subsections */
698 collect_sections (MonoAotCompile *acfg, struct ElfSectHeader *sheaders, BinSection **out, int num)
700 int i, j, maxs, num_sections;
705 for (sect = acfg->sections; sect; sect = sect->next) {
706 if (sect->subsection == 0) {
707 out [num_sections++] = sect;
708 g_assert (num_sections < num);
709 if (strcmp (sect->name, ".text") == 0) {
710 sect->shidx = SECT_TEXT;
711 } else if (strcmp (sect->name, ".data") == 0) {
712 sect->shidx = SECT_DATA;
713 } else if (strcmp (sect->name, ".bss") == 0) {
714 sect->shidx = SECT_BSS;
717 maxs = MAX (maxs, sect->subsection);
719 for (i = 0; i < num_sections; i++) {
720 for (j = 1; j <= maxs; ++j) {
721 for (sect = acfg->sections; sect; sect = sect->next) {
722 if (sect->subsection == j && strcmp (out [i]->name, sect->name) == 0) {
723 append_subsection (acfg, sheaders, out [i], sect);
732 elf_hash (const unsigned char *name)
734 unsigned long h = 0, g;
736 h = (h << 4) + *name++;
737 if ((g = h & 0xf0000000))
744 #define NUM_BUCKETS 17
747 build_hash (MonoAotCompile *acfg, int num_sections, ElfStrTable *dynstr)
750 int num_symbols = 1 + num_sections + 3;
753 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
754 if (!symbol->is_global)
757 str_table_add (dynstr, symbol->name);
758 /*g_print ("adding sym: %s\n", symbol->name);*/
760 str_table_add (dynstr, "__bss_start");
761 str_table_add (dynstr, "_edata");
762 str_table_add (dynstr, "_end");
764 data = g_new0 (int, num_symbols + 2 + NUM_BUCKETS);
765 data [0] = NUM_BUCKETS;
766 data [1] = num_symbols;
772 get_label_addr (MonoAotCompile *acfg, const char *name)
779 lab = g_hash_table_lookup (acfg->labels, name);
780 section = lab->section;
781 offset = lab->offset;
782 if (section->parent) {
783 value = section->parent->file_offset + section->cur_offset + offset;
785 value = section->file_offset + offset;
791 collect_syms (MonoAotCompile *acfg, int *hash, ElfStrTable *strtab, struct ElfSectHeader *sheaders, int *num_syms)
802 symbols = g_new0 (ElfSymbol, hash [1]);
804 symbols = g_new0 (ElfSymbol, *num_syms + SECT_NUM + 10); /* FIXME */
806 /* the first symbol is undef, all zeroes */
810 for (j = 1; j < SECT_NUM; ++j) {
811 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
812 symbols [i].st_shndx = j;
813 symbols [i].st_value = sheaders [j].sh_addr;
817 for (section = acfg->sections; section; section = section->next) {
820 symbols [i].st_info = SYM_LOCAL | SYM_SECTION;
821 if (strcmp (section->name, ".text") == 0) {
822 symbols [i].st_shndx = SECT_TEXT;
823 section->shidx = SECT_TEXT;
824 section->file_offset = 4096;
825 symbols [i].st_value = section->file_offset;
826 } else if (strcmp (section->name, ".data") == 0) {
827 symbols [i].st_shndx = SECT_DATA;
828 section->shidx = SECT_DATA;
829 section->file_offset = 4096 + 28; /* FIXME */
830 symbols [i].st_value = section->file_offset;
831 } else if (strcmp (section->name, ".bss") == 0) {
832 symbols [i].st_shndx = SECT_BSS;
833 section->shidx = SECT_BSS;
834 section->file_offset = 4096 + 28 + 8; /* FIXME */
835 symbols [i].st_value = section->file_offset;
840 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
843 if (!symbol->is_global)
845 symbols [i].st_info = (symbol->is_function? SYM_FUNC : SYM_OBJECT) | SYM_GLOBAL;
846 symbols [i].st_name = str_table_add (strtab, symbol->name);
847 /*g_print ("sym name %s tabled to %d\n", symbol->name, symbols [i].st_name);*/
848 section = symbol->section;
849 symbols [i].st_shndx = section->parent? section->parent->shidx: section->shidx;
850 lab = g_hash_table_lookup (acfg->labels, symbol->name);
851 offset = lab->offset;
852 if (section->parent) {
853 symbols [i].st_value = section->parent->file_offset + section->cur_offset + offset;
855 symbols [i].st_value = section->file_offset + offset;
859 /* add special symbols */
860 symbols [i].st_name = str_table_add (strtab, "__bss_start");
861 symbols [i].st_shndx = 0xfff1;
862 symbols [i].st_info = SYM_GLOBAL;
864 symbols [i].st_name = str_table_add (strtab, "_edata");
865 symbols [i].st_shndx = 0xfff1;
866 symbols [i].st_info = SYM_GLOBAL;
868 symbols [i].st_name = str_table_add (strtab, "_end");
869 symbols [i].st_shndx = 0xfff1;
870 symbols [i].st_info = SYM_GLOBAL;
876 /* add to hash table */
879 chain = hash + 2 + hash [0];
880 for (i = 0; i < hash [1]; ++i) {
882 /*g_print ("checking %d '%s' (sym %d)\n", symbols [i].st_name, strtab->data->str + symbols [i].st_name, i);*/
883 if (!symbols [i].st_name)
885 hashc = elf_hash ((guint8*)strtab->data->str + symbols [i].st_name);
886 slot = hashc % hash [0];
887 /*g_print ("hashing '%s' at slot %d (sym %d)\n", strtab->data->str + symbols [i].st_name, slot, i);*/
889 chain [i] = bucket [slot];
900 reloc_symbols (MonoAotCompile *acfg, ElfSymbol *symbols, struct ElfSectHeader *sheaders, ElfStrTable *strtab, gboolean dynamic)
908 for (section = acfg->sections; section; section = section->next) {
911 symbols [i].st_value = sheaders [section->shidx].sh_addr;
915 for (i = 1; i < SECT_NUM; ++i) {
916 symbols [i].st_value = sheaders [i].sh_addr;
919 for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
922 if (dynamic && !symbol->is_global)
924 section = symbol->section;
925 lab = g_hash_table_lookup (acfg->labels, symbol->name);
926 offset = lab->offset;
927 if (section->parent) {
928 symbols [i].st_value = sheaders [section->parent->shidx].sh_addr + section->cur_offset + offset;
930 symbols [i].st_value = sheaders [section->shidx].sh_addr + offset;
935 symbols [i].st_value = sheaders [SECT_BSS].sh_addr;
938 symbols [i].st_value = sheaders [SECT_DATA].sh_addr + sheaders [SECT_DATA].sh_size;
941 symbols [i].st_value = sheaders [SECT_BSS].sh_addr + sheaders [SECT_BSS].sh_size;
946 resolve_relocations (MonoAotCompile *acfg)
950 gsize end_val, start_val;
955 rr = g_new0 (ElfReloc, acfg->num_relocs);
958 for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
959 end_val = get_label_addr (acfg, reloc->val1);
961 start_val = get_label_addr (acfg, reloc->val2);
962 } else if (reloc->val2_section) {
963 start_val = reloc->val2_offset;
964 if (reloc->val2_section->parent)
965 start_val += reloc->val2_section->parent->file_offset + reloc->val2_section->cur_offset;
967 start_val += reloc->val2_section->file_offset;
971 end_val = end_val - start_val + reloc->offset;
972 if (reloc->section->parent) {
973 data = reloc->section->parent->data;
974 data += reloc->section->cur_offset;
975 data += reloc->section_offset;
976 vaddr = reloc->section->parent->file_offset;
977 vaddr += reloc->section->cur_offset;
978 vaddr += reloc->section_offset;
980 data = reloc->section->data;
981 data += reloc->section_offset;
982 vaddr = reloc->section->file_offset;
983 vaddr += reloc->section_offset;
985 /* FIXME: little endian */
987 data [1] = end_val >> 8;
988 data [2] = end_val >> 16;
989 data [3] = end_val >> 24;
990 if (start_val == 0) {
992 rr [i].value = 8; /* FIXME: 386_RELATIVE */
994 g_assert (i <= acfg->num_relocs);
1001 emit_writeout (MonoAotCompile *acfg)
1003 char *outfile_name, *tmp_outfile_name;
1005 struct ElfHeader header;
1006 struct ElfProgHeader progh [3];
1007 struct ElfSectHeader secth [SECT_NUM];
1009 ElfStrTable str_table = {NULL, NULL};
1010 ElfStrTable sh_str_table = {NULL, NULL};
1011 ElfStrTable dyn_str_table = {NULL, NULL};
1012 BinSection* sections [6];
1013 BinSection *text_section = NULL, *data_section = NULL, *bss_section = NULL;
1016 ElfDynamic dynamic [14];
1018 int i, num_sections, file_offset, virt_offset, size, num_symtab;
1021 if (acfg->aot_opts.outfile)
1022 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1024 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1026 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1028 unlink (tmp_outfile_name);
1029 file = fopen (tmp_outfile_name, "w");
1032 /* Section headers */
1033 memset (§h, 0, sizeof (secth));
1034 memset (&dynamic, 0, sizeof (dynamic));
1035 memset (&header, 0, sizeof (header));
1037 for (i = 1; i < SECT_NUM; ++i) {
1038 secth [i].sh_name = str_table_add (&sh_str_table, section_names [i]);
1039 secth [i].sh_type = section_type [i];
1040 secth [i].sh_link = section_link [i];
1041 secth [i].sh_addralign = section_align [i];
1042 secth [i].sh_flags = section_flags [i];
1043 secth [i].sh_entsize = section_esize [i];
1045 secth [SECT_DYNSYM].sh_info = 4;
1046 secth [SECT_SYMTAB].sh_info = 20;
1048 num_sections = collect_sections (acfg, secth, sections, 6);
1049 hash = build_hash (acfg, num_sections, &dyn_str_table);
1050 num_symtab = hash [1]; /* FIXME */
1051 g_print ("num_sections: %d\n", num_sections);
1052 g_print ("dynsym: %d, dynstr size: %d\n", hash [1], dyn_str_table.data->len);
1053 for (i = 0; i < num_sections; ++i) {
1054 g_print ("section %s, size: %d, %x\n", sections [i]->name, sections [i]->cur_offset, sections [i]->cur_offset);
1057 /* at this point we know where in the file the first segment sections go */
1058 dynsym = collect_syms (acfg, hash, &dyn_str_table, NULL, NULL);
1059 num_local_syms = hash [1];
1060 symtab = collect_syms (acfg, NULL, &str_table, secth, &num_local_syms);
1062 for (i = 0; i < num_sections; ++i) {
1063 if (sections [i]->shidx == SECT_TEXT) {
1064 text_section = sections [i];
1065 } else if (sections [i]->shidx == SECT_DATA) {
1066 data_section = sections [i];
1067 } else if (sections [i]->shidx == SECT_BSS) {
1068 bss_section = sections [i];
1072 file_offset = virt_offset = sizeof (header) + sizeof (progh);
1073 secth [SECT_HASH].sh_addr = secth [SECT_HASH].sh_offset = file_offset;
1074 size = sizeof (int) * (2 + hash [0] + hash [1]);
1075 virt_offset = (file_offset += size);
1076 secth [SECT_HASH].sh_size = size;
1077 secth [SECT_DYNSYM].sh_addr = secth [SECT_DYNSYM].sh_offset = file_offset;
1078 size = sizeof (ElfSymbol) * hash [1];
1079 virt_offset = (file_offset += size);
1080 secth [SECT_DYNSYM].sh_size = size;
1081 secth [SECT_DYNSTR].sh_addr = secth [SECT_DYNSTR].sh_offset = file_offset;
1082 size = dyn_str_table.data->len;
1083 virt_offset = (file_offset += size);
1084 secth [SECT_DYNSTR].sh_size = size;
1086 file_offset &= ~(4-1);
1087 secth [SECT_REL_DYN].sh_addr = secth [SECT_REL_DYN].sh_offset = file_offset;
1088 size = sizeof (ElfReloc) * acfg->num_relocs;
1089 secth [SECT_REL_DYN].sh_size = size;
1090 virt_offset = (file_offset += size);
1091 secth [SECT_REL_DYN].sh_size = size;
1092 file_offset += 4096-1;
1093 file_offset &= ~(4096-1);
1094 virt_offset = file_offset;
1095 secth [SECT_TEXT].sh_addr = secth [SECT_TEXT].sh_offset = file_offset;
1096 size = text_section->cur_offset;
1097 secth [SECT_TEXT].sh_size = size;
1098 file_offset += size;
1100 file_offset &= ~(4-1);
1101 virt_offset = file_offset;
1102 /* .dynamic, .got.plt, .data, .bss here */
1103 secth [SECT_DYNAMIC].sh_addr = virt_offset;
1104 secth [SECT_DYNAMIC].sh_offset = file_offset;
1105 size = sizeof (dynamic);
1106 secth [SECT_DYNAMIC].sh_size = size;
1109 file_offset += size;
1110 virt_offset += size;
1111 secth [SECT_GOT_PLT].sh_addr = virt_offset;
1112 secth [SECT_GOT_PLT].sh_offset = file_offset;
1114 secth [SECT_GOT_PLT].sh_size = size;
1117 file_offset += size;
1118 virt_offset += size;
1119 secth [SECT_DATA].sh_addr = virt_offset;
1120 secth [SECT_DATA].sh_offset = file_offset;
1121 size = data_section->cur_offset;
1122 secth [SECT_DATA].sh_size = size;
1125 file_offset += size;
1126 virt_offset += size;
1127 secth [SECT_BSS].sh_addr = virt_offset;
1128 secth [SECT_BSS].sh_offset = file_offset;
1129 size = bss_section->cur_offset;
1130 secth [SECT_BSS].sh_size = size;
1132 /* virtual doesn't matter anymore */
1133 secth [SECT_SHSTRTAB].sh_offset = file_offset;
1134 size = sh_str_table.data->len;
1135 secth [SECT_SHSTRTAB].sh_size = size;
1138 file_offset += size;
1139 secth [SECT_SYMTAB].sh_offset = file_offset;
1140 size = sizeof (ElfSymbol) * num_local_syms;
1141 secth [SECT_SYMTAB].sh_size = size;
1142 file_offset += size;
1143 secth [SECT_STRTAB].sh_offset = file_offset;
1144 size = str_table.data->len;
1145 secth [SECT_STRTAB].sh_size = size;
1146 file_offset += size;
1148 file_offset &= ~(4-1);
1150 text_section->file_offset = secth [SECT_TEXT].sh_offset;
1151 data_section->file_offset = secth [SECT_DATA].sh_offset;
1152 bss_section->file_offset = secth [SECT_BSS].sh_offset;
1154 header.e_ident [0] = 0x7f; header.e_ident [1] = 'E';
1155 header.e_ident [2] = 'L'; header.e_ident [3] = 'F';
1156 header.e_ident [4] = SIZEOF_VOID_P == 4? 1: 2;
1157 header.e_ident [5] = 1; /* FIXME: little endian, bigendian is 2 */
1158 header.e_ident [6] = 1; /* version */
1159 header.e_ident [7] = 0; /* FIXME: */
1160 header.e_ident [8] = 0; /* FIXME: */
1161 for (i = 9; i < 16; ++i)
1162 header.e_ident [i] = 0;
1164 header.e_type = 3; /* shared library */
1165 header.e_machine = 3; /* FIXME: 386 */
1166 header.e_version = 1; /* FIXME: */
1168 header.e_phoff = sizeof (header);
1169 header.e_ehsize = sizeof (header);
1170 header.e_phentsize = sizeof (struct ElfProgHeader);
1172 header.e_entry = secth [SECT_TEXT].sh_addr;
1173 header.e_shstrndx = 10;
1174 header.e_shentsize = sizeof (struct ElfSectHeader);
1175 header.e_shnum = SECT_NUM;
1176 header.e_shoff = file_offset;
1180 dynamic [i].d_tag = DYN_HASH;
1181 dynamic [i].d_val = secth [SECT_HASH].sh_offset;
1183 dynamic [i].d_tag = DYN_STRTAB;
1184 dynamic [i].d_val = secth [SECT_DYNSTR].sh_offset;
1186 dynamic [i].d_tag = DYN_SYMTAB;
1187 dynamic [i].d_val = secth [SECT_DYNSYM].sh_offset;
1189 dynamic [i].d_tag = DYN_STRSZ;
1190 dynamic [i].d_val = dyn_str_table.data->len;
1192 dynamic [i].d_tag = DYN_SYMENT;
1193 dynamic [i].d_val = sizeof (ElfSymbol);
1195 dynamic [i].d_tag = DYN_REL;
1196 dynamic [i].d_val = secth [SECT_REL_DYN].sh_offset;
1198 dynamic [i].d_tag = DYN_RELSZ;
1199 dynamic [i].d_val = secth [SECT_REL_DYN].sh_size;
1201 dynamic [i].d_tag = DYN_RELENT;
1202 dynamic [i].d_val = sizeof (ElfReloc);
1204 dynamic [i].d_tag = DYN_RELCOUNT;
1205 dynamic [i].d_val = acfg->num_relocs;
1208 /* Program header */
1209 memset (&progh, 0, sizeof (progh));
1210 progh [0].p_type = 1; /* LOAD */
1211 progh [0].p_filesz = progh [0].p_memsz = secth [SECT_DYNAMIC].sh_offset;
1212 progh [0].p_align = 4096;
1213 progh [0].p_flags = 5;
1215 progh [1].p_type = 1;
1216 progh [1].p_offset = secth [SECT_DYNAMIC].sh_offset;
1217 progh [1].p_vaddr = progh [1].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1218 progh [1].p_filesz = secth [SECT_BSS].sh_offset - secth [SECT_DYNAMIC].sh_offset;
1219 progh [1].p_memsz = secth [SECT_BSS].sh_addr + secth [SECT_BSS].sh_size - secth [SECT_DYNAMIC].sh_addr;
1220 progh [1].p_align = 4096;
1221 progh [1].p_flags = 6;
1223 progh [2].p_type = 2; /* DYNAMIC */
1224 progh [2].p_offset = secth [SECT_DYNAMIC].sh_offset;
1225 progh [2].p_vaddr = progh [2].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1226 progh [2].p_filesz = progh [2].p_memsz = secth [SECT_DYNAMIC].sh_size;
1227 progh [2].p_align = 4;
1228 progh [2].p_flags = 6;
1230 reloc_symbols (acfg, dynsym, secth, &dyn_str_table, TRUE);
1231 reloc_symbols (acfg, symtab, secth, &str_table, FALSE);
1232 relocs = resolve_relocations (acfg);
1234 fwrite (&header, sizeof (header), 1, file);
1235 fwrite (&progh, sizeof (progh), 1, file);
1236 fwrite (hash, sizeof (int) * (hash [0] + hash [1] + 2), 1, file);
1237 fwrite (dynsym, sizeof (ElfSymbol) * hash [1], 1, file);
1238 fwrite (dyn_str_table.data->str, dyn_str_table.data->len, 1, file);
1240 fseek (file, secth [SECT_REL_DYN].sh_offset, SEEK_SET);
1241 fwrite (relocs, sizeof (ElfReloc), acfg->num_relocs, file);
1243 fseek (file, secth [SECT_TEXT].sh_offset, SEEK_SET);
1244 /* write .text, .data, .bss sections */
1245 fwrite (text_section->data, text_section->cur_offset, 1, file);
1248 fwrite (dynamic, sizeof (dynamic), 1, file);
1250 size = secth [SECT_DYNAMIC].sh_addr;
1251 fwrite (&size, sizeof (size), 1, file);
1252 fseek (file, secth [SECT_DATA].sh_offset, SEEK_SET);
1253 fwrite (data_section->data, data_section->cur_offset, 1, file);
1255 fseek (file, secth [SECT_SHSTRTAB].sh_offset, SEEK_SET);
1256 fwrite (sh_str_table.data->str, sh_str_table.data->len, 1, file);
1257 fseek (file, secth [SECT_SYMTAB].sh_offset, SEEK_SET);
1258 fwrite (symtab, sizeof (ElfSymbol) * num_local_syms, 1, file);
1259 fseek (file, secth [SECT_STRTAB].sh_offset, SEEK_SET);
1260 fwrite (str_table.data->str, str_table.data->len, 1, file);
1261 /*g_print ("file_offset %d vs %d\n", file_offset, ftell (file));*/
1262 /*g_assert (file_offset >= ftell (file));*/
1263 fseek (file, file_offset, SEEK_SET);
1264 fwrite (§h, sizeof (secth), 1, file);
1266 rename (tmp_outfile_name, outfile_name);
1268 g_free (tmp_outfile_name);
1269 g_free (outfile_name);
1274 #endif /* USE_ELF_WRITER */
1279 emit_start (MonoAotCompile *acfg)
1281 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
1282 acfg->fp = fdopen (i, "w+");
1283 g_assert (acfg->fp);
1287 emit_unset_mode (MonoAotCompile *acfg)
1289 if (acfg->mode == EMIT_NONE)
1291 fprintf (acfg->fp, "\n");
1292 acfg->mode = EMIT_NONE;
1296 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
1298 emit_unset_mode (acfg);
1299 #if defined(PLATFORM_WIN32)
1300 fprintf (acfg->fp, ".section %s\n", section_name);
1301 #elif defined(__MACH__)
1302 /* This needs to be made more precise on mach. */
1303 fprintf (acfg->fp, "%s\n", subsection_index == 0 ? ".text" : ".data");
1304 #elif defined(sparc) || defined(__arm__)
1305 /* For solaris as, GNU as should accept the same */
1306 fprintf (acfg->fp, ".section \"%s\"\n", section_name);
1308 fprintf (acfg->fp, "%s %d\n", section_name, subsection_index);
1313 emit_symbol_type (MonoAotCompile *acfg, const char *name, gboolean func)
1322 emit_unset_mode (acfg);
1323 #if defined(__MACH__)
1325 #elif defined(sparc) || defined(__arm__)
1326 fprintf (acfg->fp, "\t.type %s,#%s\n", name, stype);
1327 #elif defined(PLATFORM_WIN32)
1329 #elif defined(__x86_64__) || defined(__i386__)
1330 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1332 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1337 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
1339 emit_unset_mode (acfg);
1340 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1341 // mach-o always uses a '_' prefix.
1342 fprintf (acfg->fp, "\t.globl _%s\n", name);
1344 fprintf (acfg->fp, "\t.globl %s\n", name);
1347 emit_symbol_type (acfg, name, func);
1351 emit_label (MonoAotCompile *acfg, const char *name)
1353 emit_unset_mode (acfg);
1354 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1355 // mach-o always uses a '_' prefix.
1356 fprintf (acfg->fp, "_%s:\n", name);
1358 fprintf (acfg->fp, "%s:\n", name);
1361 #if defined(PLATFORM_WIN32)
1362 /* Emit a normal label too */
1363 fprintf (acfg->fp, "%s:\n", name);
1368 emit_string (MonoAotCompile *acfg, const char *value)
1370 emit_unset_mode (acfg);
1371 fprintf (acfg->fp, "\t%s \"%s\"\n", AS_STRING_DIRECTIVE, value);
1375 emit_line (MonoAotCompile *acfg)
1377 emit_unset_mode (acfg);
1378 fprintf (acfg->fp, "\n");
1382 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
1384 emit_unset_mode (acfg);
1385 emit_section_change (acfg, ".text", 1);
1386 emit_global (acfg, name, FALSE);
1387 emit_label (acfg, name);
1388 emit_string (acfg, value);
1392 emit_alignment (MonoAotCompile *acfg, int size)
1394 emit_unset_mode (acfg);
1395 #if defined(__arm__)
1396 fprintf (acfg->fp, "\t.align %d\n", ilog2 (size));
1397 #elif defined(__ppc__) && defined(__MACH__)
1398 // the mach-o assembler specifies alignments as powers of 2.
1399 fprintf (acfg->fp, "\t.align %d\t; ilog2\n", ilog2(size));
1400 #elif defined(__powerpc__)
1401 /* ignore on linux/ppc */
1403 fprintf (acfg->fp, "\t.align %d\n", size);
1408 emit_pointer (MonoAotCompile *acfg, const char *target)
1410 emit_unset_mode (acfg);
1411 emit_alignment (acfg, sizeof (gpointer));
1412 #if defined(__x86_64__)
1413 fprintf (acfg->fp, "\t.quad %s\n", target ? target : "0");
1414 #elif defined(sparc) && SIZEOF_VOID_P == 8
1415 fprintf (acfg->fp, "\t.xword %s\n", target ? target : "0");
1417 fprintf (acfg->fp, "\t.long %s\n", target ? target : "0");
1422 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
1425 if (acfg->mode != EMIT_BYTE) {
1426 acfg->mode = EMIT_BYTE;
1427 acfg->col_count = 0;
1429 for (i = 0; i < size; ++i, ++acfg->col_count) {
1430 if ((acfg->col_count % 32) == 0)
1431 fprintf (acfg->fp, "\n\t.byte ");
1433 fprintf (acfg->fp, ",");
1434 fprintf (acfg->fp, "0x%x", buf [i]);
1439 emit_int16 (MonoAotCompile *acfg, int value)
1441 if (acfg->mode != EMIT_WORD) {
1442 acfg->mode = EMIT_WORD;
1443 acfg->col_count = 0;
1445 if ((acfg->col_count++ % 8) == 0)
1446 #if defined(__MACH__)
1447 fprintf (acfg->fp, "\n\t.short ");
1448 #elif defined(__arm__)
1449 /* FIXME: Use .hword on other archs as well */
1450 fprintf (acfg->fp, "\n\t.hword ");
1452 fprintf (acfg->fp, "\n\t.word ");
1455 fprintf (acfg->fp, ", ");
1456 fprintf (acfg->fp, "%d", value);
1460 emit_int32 (MonoAotCompile *acfg, int value)
1462 if (acfg->mode != EMIT_LONG) {
1463 acfg->mode = EMIT_LONG;
1464 acfg->col_count = 0;
1466 if ((acfg->col_count++ % 8) == 0)
1467 fprintf (acfg->fp, "\n\t.long ");
1469 fprintf (acfg->fp, ",");
1470 fprintf (acfg->fp, "%d", value);
1474 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
1476 if (acfg->mode != EMIT_LONG) {
1477 acfg->mode = EMIT_LONG;
1478 acfg->col_count = 0;
1480 if ((acfg->col_count++ % 8) == 0)
1481 fprintf (acfg->fp, "\n\t.long ");
1483 fprintf (acfg->fp, ",");
1485 fprintf (acfg->fp, "%s - %s + %d", end, start, offset);
1486 else if (offset < 0)
1487 fprintf (acfg->fp, "%s - %s %d", end, start, offset);
1489 fprintf (acfg->fp, "%s - %s", end, start);
1493 emit_zero_bytes (MonoAotCompile *acfg, int num)
1495 emit_unset_mode (acfg);
1496 #if defined(__MACH__)
1497 fprintf (acfg->fp, "\t.space %d\n", num);
1499 fprintf (acfg->fp, "\t.skip %d\n", num);
1504 emit_writeout (MonoAotCompile *acfg)
1506 char *command, *objfile;
1507 char *outfile_name, *tmp_outfile_name;
1511 #if defined(__x86_64__)
1512 #define AS_OPTIONS "--64"
1513 #elif defined(sparc) && SIZEOF_VOID_P == 8
1514 #define AS_OPTIONS "-xarch=v9"
1516 #define AS_OPTIONS ""
1519 if (acfg->aot_opts.static_link) {
1520 if (acfg->aot_opts.outfile)
1521 objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1523 objfile = g_strdup_printf ("%s.o", acfg->image->name);
1525 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
1527 command = g_strdup_printf ("as %s %s -o %s", AS_OPTIONS, acfg->tmpfname, objfile);
1528 printf ("Executing the native assembler: %s\n", command);
1529 if (system (command) != 0) {
1537 if (acfg->aot_opts.static_link) {
1538 printf ("Output file: '%s'.\n", objfile);
1539 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
1544 if (acfg->aot_opts.outfile)
1545 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1547 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1549 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1552 command = g_strdup_printf ("ld -shared -G -o %s %s.o", outfile_name, acfg->tmpfname);
1553 #elif defined(__ppc__) && defined(__MACH__)
1554 command = g_strdup_printf ("gcc -dynamiclib -o %s %s.o", outfile_name, acfg->tmpfname);
1555 #elif defined(PLATFORM_WIN32)
1556 command = g_strdup_printf ("gcc -shared --dll -mno-cygwin -o %s %s.o", outfile_name, acfg->tmpfname);
1558 if (acfg->aot_opts.no_dlsym) {
1560 * Need to link using gcc so our ctor function gets called.
1562 command = g_strdup_printf ("gcc -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1564 command = g_strdup_printf ("ld -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1567 printf ("Executing the native linker: %s\n", command);
1568 if (system (command) != 0) {
1569 g_free (tmp_outfile_name);
1570 g_free (outfile_name);
1578 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
1579 printf ("Stripping the binary: %s\n", com);
1583 rename (tmp_outfile_name, outfile_name);
1585 g_free (tmp_outfile_name);
1586 g_free (outfile_name);
1589 if (acfg->aot_opts.save_temps)
1590 printf ("Retained input file.\n");
1592 unlink (acfg->tmpfname);
1597 #endif /* ASM_WRITER */
1600 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
1602 if (acfg->aot_opts.no_dlsym) {
1603 g_ptr_array_add (acfg->globals, g_strdup (name));
1605 emit_global_inner (acfg, name, func);
1610 emit_byte (MonoAotCompile *acfg, guint8 val)
1612 emit_bytes (acfg, &val, 1);
1616 mono_get_field_token (MonoClassField *field)
1618 MonoClass *klass = field->parent;
1621 for (i = 0; i < klass->field.count; ++i) {
1622 if (field == &klass->fields [i])
1623 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
1626 g_assert_not_reached ();
1631 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
1635 //printf ("ENCODE: %d 0x%x.\n", value, value);
1638 * Same encoding as the one used in the metadata, extended to handle values
1639 * greater than 0x1fffffff.
1641 if ((value >= 0) && (value <= 127))
1643 else if ((value >= 0) && (value <= 16383)) {
1644 p [0] = 0x80 | (value >> 8);
1645 p [1] = value & 0xff;
1647 } else if ((value >= 0) && (value <= 0x1fffffff)) {
1648 p [0] = (value >> 24) | 0xc0;
1649 p [1] = (value >> 16) & 0xff;
1650 p [2] = (value >> 8) & 0xff;
1651 p [3] = value & 0xff;
1656 p [1] = (value >> 24) & 0xff;
1657 p [2] = (value >> 16) & 0xff;
1658 p [3] = (value >> 8) & 0xff;
1659 p [4] = value & 0xff;
1667 get_image_index (MonoAotCompile *cfg, MonoImage *image)
1671 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
1675 index = g_hash_table_size (cfg->image_hash);
1676 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
1677 g_ptr_array_add (cfg->image_table, image);
1683 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
1686 MonoClass *k = NULL;
1688 /* FIXME: Search referenced images as well */
1689 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
1690 k = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
1695 if (i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows)
1696 return MONO_TOKEN_TYPE_SPEC | (i + 1);
1702 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
1707 * Encode a reference to KLASS. We use our home-grown encoding instead of the
1708 * standard metadata encoding.
1711 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
1715 if (klass->generic_class) {
1717 g_assert (klass->type_token);
1719 /* Find a typespec for a class if possible */
1720 token = find_typespec_for_class (acfg, klass);
1722 encode_value (token, p, &p);
1723 encode_value (get_image_index (acfg, acfg->image), p, &p);
1725 MonoClass *gclass = klass->generic_class->container_class;
1726 MonoGenericInst *inst = klass->generic_class->context.class_inst;
1729 /* Encode it ourselves */
1731 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1732 encode_value (MONO_TYPE_GENERICINST, p, &p);
1733 encode_klass_ref (acfg, gclass, p, &p);
1734 encode_value (inst->type_argc, p, &p);
1735 for (i = 0; i < inst->type_argc; ++i)
1736 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1738 } else if (klass->type_token) {
1739 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
1740 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
1741 encode_value (get_image_index (acfg, klass->image), p, &p);
1742 } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
1743 MonoGenericParam *param = klass->byval_arg.data.generic_param;
1746 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1747 encode_value (klass->byval_arg.type, p, &p);
1749 encode_value (param->num, p, &p);
1751 g_assert (param->owner);
1752 encode_value (param->owner->is_method, p, &p);
1753 if (param->owner->is_method)
1754 encode_method_ref (acfg, param->owner->owner.method, p, &p);
1756 encode_klass_ref (acfg, param->owner->owner.klass, p, &p);
1759 g_assert (klass->rank > 0);
1760 encode_value (MONO_TOKEN_TYPE_DEF, p, &p);
1761 encode_value (get_image_index (acfg, klass->image), p, &p);
1762 encode_value (klass->rank, p, &p);
1763 encode_klass_ref (acfg, klass->element_class, p, &p);
1769 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
1771 guint32 token = mono_get_field_token (field);
1774 encode_klass_ref (cfg, field->parent, p, &p);
1775 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
1776 encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
1780 #define MAX_IMAGE_INDEX 250
1783 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
1785 guint32 image_index = get_image_index (acfg, method->klass->image);
1786 guint32 token = method->token;
1787 MonoJumpInfoToken *ji;
1790 g_assert (image_index < MAX_IMAGE_INDEX);
1792 if (method->wrapper_type) {
1794 encode_value ((253 << 24), p, &p);
1796 encode_value (method->wrapper_type, p, &p);
1798 switch (method->wrapper_type) {
1799 case MONO_WRAPPER_REMOTING_INVOKE:
1800 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
1801 case MONO_WRAPPER_XDOMAIN_INVOKE: {
1804 m = mono_marshal_method_from_wrapper (method);
1806 encode_method_ref (acfg, m, p, &p);
1809 case MONO_WRAPPER_PROXY_ISINST:
1810 case MONO_WRAPPER_LDFLD:
1811 case MONO_WRAPPER_LDFLDA:
1812 case MONO_WRAPPER_STFLD:
1813 case MONO_WRAPPER_ISINST: {
1814 MonoClass *proxy_class = (MonoClass*)mono_marshal_method_from_wrapper (method);
1815 encode_klass_ref (acfg, proxy_class, p, &p);
1818 case MONO_WRAPPER_LDFLD_REMOTE:
1819 case MONO_WRAPPER_STFLD_REMOTE:
1821 case MONO_WRAPPER_ALLOC: {
1822 int alloc_type = mono_gc_get_managed_allocator_type (method);
1823 g_assert (alloc_type != -1);
1824 encode_value (alloc_type, p, &p);
1827 case MONO_WRAPPER_STELEMREF:
1829 case MONO_WRAPPER_STATIC_RGCTX_INVOKE: {
1832 m = mono_marshal_method_from_wrapper (method);
1834 encode_method_ref (acfg, m, p, &p);
1838 g_assert_not_reached ();
1840 } else if (mono_method_signature (method)->is_inflated) {
1842 * This is a generic method, find the original token which referenced it and
1844 * Obtain the token from information recorded by the JIT.
1846 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1848 image_index = get_image_index (acfg, ji->image);
1849 g_assert (image_index < MAX_IMAGE_INDEX);
1853 encode_value ((255 << 24), p, &p);
1854 encode_value (image_index, p, &p);
1855 encode_value (token, p, &p);
1857 MonoMethod *declaring;
1858 MonoGenericContext *context = mono_method_get_context (method);
1859 MonoGenericInst *inst;
1862 g_assert (method->is_inflated);
1863 declaring = ((MonoMethodInflated*)method)->declaring;
1866 * This might be a non-generic method of a generic instance, which
1867 * doesn't have a token since the reference is generated by the JIT
1868 * like Nullable:Box/Unbox, or by generic sharing.
1872 encode_value ((254 << 24), p, &p);
1873 /* Encode the klass */
1874 encode_klass_ref (acfg, method->klass, p, &p);
1875 /* Encode the method */
1876 image_index = get_image_index (acfg, method->klass->image);
1877 g_assert (image_index < MAX_IMAGE_INDEX);
1878 g_assert (declaring->token);
1879 token = declaring->token;
1880 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1881 encode_value (image_index, p, &p);
1882 encode_value (token, p, &p);
1884 /* Encode the context */
1885 inst = context->class_inst;
1886 encode_value (inst ? 1 : 0, p, &p);
1888 encode_value (inst->type_argc, p, &p);
1889 for (i = 0; i < inst->type_argc; ++i)
1890 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1892 inst = context->method_inst;
1893 encode_value (inst ? 1 : 0, p, &p);
1895 encode_value (inst->type_argc, p, &p);
1896 for (i = 0; i < inst->type_argc; ++i)
1897 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1900 } else if (token == 0) {
1901 /* This might be a method of a constructed type like int[,].Set */
1902 /* Obtain the token from information recorded by the JIT */
1903 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1905 image_index = get_image_index (acfg, ji->image);
1906 g_assert (image_index < MAX_IMAGE_INDEX);
1910 encode_value ((255 << 24), p, &p);
1911 encode_value (image_index, p, &p);
1912 encode_value (token, p, &p);
1914 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1915 encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
1921 compare_patches (gconstpointer a, gconstpointer b)
1925 i = (*(MonoJumpInfo**)a)->ip.i;
1926 j = (*(MonoJumpInfo**)b)->ip.i;
1940 * Return whenever PATCH_INFO refers to a direct call, and thus requires a
1943 static inline gboolean
1944 is_plt_patch (MonoJumpInfo *patch_info)
1946 switch (patch_info->type) {
1947 case MONO_PATCH_INFO_METHOD:
1948 case MONO_PATCH_INFO_INTERNAL_METHOD:
1949 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
1950 case MONO_PATCH_INFO_CLASS_INIT:
1951 case MONO_PATCH_INFO_RGCTX_FETCH:
1952 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
1960 * is_shared_got_patch:
1962 * Return whenever PATCH_INFO refers to a patch which needs a shared GOT
1964 * Keep it in sync with the version in aot-runtime.c.
1966 static inline gboolean
1967 is_shared_got_patch (MonoJumpInfo *patch_info)
1969 switch (patch_info->type) {
1970 case MONO_PATCH_INFO_VTABLE:
1971 case MONO_PATCH_INFO_CLASS:
1972 case MONO_PATCH_INFO_IID:
1973 case MONO_PATCH_INFO_ADJUSTED_IID:
1974 case MONO_PATCH_INFO_FIELD:
1975 case MONO_PATCH_INFO_SFLDA:
1976 case MONO_PATCH_INFO_DECLSEC:
1977 case MONO_PATCH_INFO_LDTOKEN:
1978 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1979 case MONO_PATCH_INFO_RVA:
1980 case MONO_PATCH_INFO_METHODCONST:
1988 get_plt_offset (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
1992 if (is_plt_patch (patch_info)) {
1993 int idx = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_plt_offset, patch_info));
1998 MonoJumpInfo *new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
2000 res = acfg->plt_offset;
2001 g_hash_table_insert (acfg->plt_offset_to_patch, GUINT_TO_POINTER (res), new_ji);
2002 g_hash_table_insert (acfg->patch_to_plt_offset, new_ji, GUINT_TO_POINTER (res));
2003 acfg->plt_offset ++;
2013 * Returns the offset of the GOT slot where the runtime object resulting from resolving
2014 * JI could be found if it exists, otherwise allocates a new one.
2017 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
2021 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji));
2023 return got_offset - 1;
2025 got_offset = acfg->got_offset;
2026 acfg->got_offset ++;
2028 acfg->stats.got_slots ++;
2029 acfg->stats.got_slot_types [ji->type] ++;
2035 get_shared_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
2040 if (!g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji)) {
2041 got_offset = get_got_offset (acfg, ji);
2042 copy = mono_patch_info_dup_mp (acfg->mempool, ji);
2043 g_hash_table_insert (acfg->patch_to_shared_got_offset, copy, GUINT_TO_POINTER (got_offset + 1));
2044 g_ptr_array_add (acfg->shared_patches, copy);
2047 return get_got_offset (acfg, ji);
2050 /* Add a method to the list of methods which need to be emitted */
2052 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index)
2054 if (!g_hash_table_lookup (acfg->method_indexes, method)) {
2055 g_ptr_array_add (acfg->methods, method);
2056 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
2061 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
2063 int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2071 add_method (MonoAotCompile *acfg, MonoMethod *method)
2075 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2079 index = acfg->method_index;
2080 add_method_with_index (acfg, method, index);
2082 /* FIXME: Fix quadratic behavior */
2083 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (index));
2085 acfg->method_index ++;
2091 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
2093 MonoAotCompile *acfg = user_data;
2094 MonoJitICallInfo *callinfo = value;
2095 MonoMethod *wrapper;
2101 name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
2102 wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, check_for_pending_exc);
2105 add_method (acfg, wrapper);
2109 get_runtime_invoke_sig (MonoMethodSignature *sig)
2111 MonoMethodBuilder *mb;
2114 mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
2115 m = mono_mb_create_method (mb, sig, 16);
2116 return mono_marshal_get_runtime_invoke (m);
2120 add_wrappers (MonoAotCompile *acfg)
2122 MonoMethod *method, *m;
2124 MonoMethodSignature *csig;
2128 * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
2129 * so there is only one wrapper of a given type, or inlining their contents into their
2134 * FIXME: This depends on the fact that different wrappers have different
2138 /* FIXME: Collect these automatically */
2140 /* Runtime invoke wrappers */
2142 /* void runtime-invoke () [.cctor] */
2143 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2144 csig->ret = &mono_defaults.void_class->byval_arg;
2145 add_method (acfg, get_runtime_invoke_sig (csig));
2147 /* void runtime-invoke () [Finalize] */
2148 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2150 csig->ret = &mono_defaults.void_class->byval_arg;
2151 add_method (acfg, get_runtime_invoke_sig (csig));
2153 /* void runtime-invoke (string) [exception ctor] */
2154 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
2156 csig->ret = &mono_defaults.void_class->byval_arg;
2157 csig->params [0] = &mono_defaults.string_class->byval_arg;
2158 add_method (acfg, get_runtime_invoke_sig (csig));
2160 /* void runtime-invoke (string, string) [exception ctor] */
2161 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2163 csig->ret = &mono_defaults.void_class->byval_arg;
2164 csig->params [0] = &mono_defaults.string_class->byval_arg;
2165 csig->params [1] = &mono_defaults.string_class->byval_arg;
2166 add_method (acfg, get_runtime_invoke_sig (csig));
2168 /* string runtime-invoke () [Exception.ToString ()] */
2169 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2171 csig->ret = &mono_defaults.string_class->byval_arg;
2172 add_method (acfg, get_runtime_invoke_sig (csig));
2174 /* void runtime-invoke (string, Exception) [exception ctor] */
2175 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2177 csig->ret = &mono_defaults.void_class->byval_arg;
2178 csig->params [0] = &mono_defaults.string_class->byval_arg;
2179 csig->params [1] = &mono_defaults.exception_class->byval_arg;
2180 add_method (acfg, get_runtime_invoke_sig (csig));
2182 /* Assembly runtime-invoke (string, bool) [DoAssemblyResolve] */
2183 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2185 csig->ret = &(mono_class_from_name (
2186 mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
2187 csig->params [0] = &mono_defaults.string_class->byval_arg;
2188 csig->params [1] = &mono_defaults.boolean_class->byval_arg;
2189 add_method (acfg, get_runtime_invoke_sig (csig));
2191 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2192 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2194 method = mono_get_method (acfg->image, token, NULL);
2196 add_method (acfg, mono_marshal_get_runtime_invoke (method));
2199 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
2200 /* JIT icall wrappers */
2201 /* FIXME: locking */
2202 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
2204 /* Managed Allocators */
2205 nallocators = mono_gc_get_managed_allocator_types ();
2206 for (i = 0; i < nallocators; ++i) {
2207 m = mono_gc_get_managed_allocator_by_type (i);
2209 add_method (acfg, m);
2213 add_method (acfg, mono_marshal_get_stelemref ());
2216 /* remoting-invoke wrappers */
2217 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2218 MonoMethodSignature *sig;
2220 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2221 method = mono_get_method (acfg->image, token, NULL);
2223 sig = mono_method_signature (method);
2225 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class) &&
2226 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
2227 m = mono_marshal_get_remoting_invoke_with_check (method);
2229 add_method (acfg, m);
2234 /* static rgctx wrappers */
2235 /* FIXME: Each wrapper belongs to a given instantiation of a generic method */
2236 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2237 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2238 method = mono_get_method (acfg->image, token, NULL);
2240 if (((method->flags & METHOD_ATTRIBUTE_STATIC) ||
2241 (method->is_inflated && mono_method_get_context (method)->method_inst)) &&
2242 mono_class_generic_sharing_enabled (method->klass) &&
2243 mono_method_is_generic_sharable_impl (method, FALSE)) {
2244 m = mono_marshal_get_static_rgctx_invoke (method);
2245 add_method (acfg, m);
2252 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only)
2254 int i, pindex, start_index, method_index;
2256 MonoJumpInfo *patch_info;
2257 MonoMethodHeader *header;
2262 header = mono_method_get_header (method);
2264 method_index = get_method_index (acfg, method);
2267 /* Collect and sort relocations */
2268 patches = g_ptr_array_new ();
2269 for (patch_info = relocs; patch_info; patch_info = patch_info->next)
2270 g_ptr_array_add (patches, patch_info);
2271 g_ptr_array_sort (patches, compare_patches);
2274 for (i = 0; i < code_len; i++) {
2276 for (pindex = start_index; pindex < patches->len; ++pindex) {
2277 patch_info = g_ptr_array_index (patches, pindex);
2278 if (patch_info->ip.i >= i)
2282 #ifdef MONO_ARCH_AOT_SUPPORTED
2284 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
2285 start_index = pindex;
2287 switch (patch_info->type) {
2288 case MONO_PATCH_INFO_NONE:
2290 case MONO_PATCH_INFO_GOT_OFFSET: {
2291 guint32 offset = mono_arch_get_patch_offset (code + i);
2292 emit_bytes (acfg, code + i, offset);
2293 emit_symbol_diff (acfg, "got", ".", offset);
2295 i += offset + 4 - 1;
2300 char *direct_call_target;
2302 if (!is_got_patch (patch_info->type))
2306 * If this patch is a call, try emitting a direct call instead of
2307 * through a PLT entry. This is possible if the called method is in
2308 * the same assembly and requires no initialization.
2310 direct_call_target = NULL;
2311 if (!got_only && (patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == method->klass->image)) {
2312 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
2314 if (!callee_cfg->has_got_slots && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)) {
2315 //printf ("DIRECT: %s %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (callee_cfg->method, TRUE));
2316 direct_call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, callee_cfg->orig_method));
2317 patch_info->type = MONO_PATCH_INFO_NONE;
2318 acfg->stats.direct_calls ++;
2322 acfg->stats.all_calls ++;
2325 if (!got_only && !direct_call_target) {
2326 int plt_offset = get_plt_offset (acfg, patch_info);
2327 if (plt_offset != -1) {
2328 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
2329 direct_call_target = g_strdup_printf (".Lp_%d", plt_offset);
2331 /* Nullify the patch */
2332 patch_info->type = MONO_PATCH_INFO_NONE;
2336 if (direct_call_target) {
2337 #if defined(__i386__) || defined(__x86_64__)
2338 g_assert (code [i] == 0xe8);
2339 /* Need to make sure this is exactly 5 bytes long */
2340 emit_byte (acfg, '\xe8');
2341 emit_symbol_diff (acfg, direct_call_target, ".", -4);
2343 #elif defined(__arm__)
2344 #ifdef USE_BIN_WRITER
2345 /* FIXME: Can't encode this using the current symbol writer functions */
2346 g_assert_not_reached ();
2348 emit_unset_mode (acfg);
2349 fprintf (acfg->fp, "bl %s\n", direct_call_target);
2354 g_free (direct_call_target);
2356 got_slot = get_got_offset (acfg, patch_info);
2358 emit_bytes (acfg, code + i, mono_arch_get_patch_offset (code + i));
2360 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
2361 #elif defined(__i386__)
2362 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
2363 #elif defined(__arm__)
2364 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
2366 g_assert_not_reached ();
2369 i += mono_arch_get_patch_offset (code + i) + 4 - 1;
2375 #endif /* MONO_ARCH_AOT_SUPPORTED */
2378 emit_bytes (acfg, code + i, 1);
2383 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
2389 int func_alignment = 16;
2390 MonoMethodHeader *header;
2392 method = cfg->orig_method;
2393 code = cfg->native_code;
2394 header = mono_method_get_header (method);
2396 method_index = get_method_index (acfg, method);
2398 /* Make the labels local */
2399 symbol = g_strdup_printf (".Lm_%x", method_index);
2401 emit_alignment (acfg, func_alignment);
2402 emit_label (acfg, symbol);
2403 if (acfg->aot_opts.write_symbols)
2404 emit_global (acfg, symbol, TRUE);
2406 if (cfg->verbose_level > 0)
2407 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
2410 acfg->stats.code_size += cfg->code_len;
2412 acfg->method_got_offsets [method_index] = acfg->got_offset;
2414 emit_and_reloc_code (acfg, method, code, cfg->code_len, cfg->patch_info, FALSE);
2422 * Encode PATCH_INFO into its disk representation.
2425 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
2429 switch (patch_info->type) {
2430 case MONO_PATCH_INFO_NONE:
2432 case MONO_PATCH_INFO_IMAGE:
2433 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
2435 case MONO_PATCH_INFO_METHOD_REL:
2436 encode_value ((gint)patch_info->data.offset, p, &p);
2438 case MONO_PATCH_INFO_SWITCH: {
2439 gpointer *table = (gpointer *)patch_info->data.table->table;
2442 encode_value (patch_info->data.table->table_size, p, &p);
2443 for (k = 0; k < patch_info->data.table->table_size; k++)
2444 encode_value ((int)(gssize)table [k], p, &p);
2447 case MONO_PATCH_INFO_METHODCONST:
2448 case MONO_PATCH_INFO_METHOD:
2449 case MONO_PATCH_INFO_METHOD_JUMP:
2450 case MONO_PATCH_INFO_ICALL_ADDR:
2451 case MONO_PATCH_INFO_METHOD_RGCTX:
2452 encode_method_ref (acfg, patch_info->data.method, p, &p);
2454 case MONO_PATCH_INFO_INTERNAL_METHOD:
2455 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2456 guint32 len = strlen (patch_info->data.name);
2458 encode_value (len, p, &p);
2460 memcpy (p, patch_info->data.name, len);
2465 case MONO_PATCH_INFO_LDSTR: {
2466 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
2467 guint32 token = patch_info->data.token->token;
2468 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
2469 encode_value (image_index, p, &p);
2470 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
2473 case MONO_PATCH_INFO_RVA:
2474 case MONO_PATCH_INFO_DECLSEC:
2475 case MONO_PATCH_INFO_LDTOKEN:
2476 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2477 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
2478 encode_value (patch_info->data.token->token, p, &p);
2480 case MONO_PATCH_INFO_EXC_NAME: {
2481 MonoClass *ex_class;
2484 mono_class_from_name (mono_defaults.exception_class->image,
2485 "System", patch_info->data.target);
2486 g_assert (ex_class);
2487 encode_klass_ref (acfg, ex_class, p, &p);
2490 case MONO_PATCH_INFO_R4:
2491 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2493 case MONO_PATCH_INFO_R8:
2494 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2495 encode_value (*(((guint32 *)patch_info->data.target) + 1), p, &p);
2497 case MONO_PATCH_INFO_VTABLE:
2498 case MONO_PATCH_INFO_CLASS:
2499 case MONO_PATCH_INFO_IID:
2500 case MONO_PATCH_INFO_ADJUSTED_IID:
2501 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2503 case MONO_PATCH_INFO_CLASS_INIT:
2504 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2505 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2507 case MONO_PATCH_INFO_FIELD:
2508 case MONO_PATCH_INFO_SFLDA:
2509 encode_field_info (acfg, patch_info->data.field, p, &p);
2511 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2513 case MONO_PATCH_INFO_RGCTX_FETCH: {
2514 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
2516 encode_method_ref (acfg, entry->method, p, &p);
2517 encode_value (entry->in_mrgctx, p, &p);
2518 encode_value (entry->info_type, p, &p);
2519 encode_value (entry->data->type, p, &p);
2520 encode_patch (acfg, entry->data, p, &p);
2523 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2526 g_warning ("unable to handle jump info %d", patch_info->type);
2527 g_assert_not_reached ();
2534 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, int first_got_offset, guint8 *buf, guint8 **endbuf)
2537 guint32 last_offset, j, pindex;
2538 MonoJumpInfo *patch_info;
2540 encode_value (n_patches, p, &p);
2543 encode_value (first_got_offset, p, &p);
2545 /* First encode the type+position table */
2548 for (pindex = 0; pindex < patches->len; ++pindex) {
2550 patch_info = g_ptr_array_index (patches, pindex);
2552 if (patch_info->type == MONO_PATCH_INFO_NONE)
2557 //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
2558 offset = patch_info->ip.i - last_offset;
2559 last_offset = patch_info->ip.i;
2561 /* Only the type is needed */
2562 *p = patch_info->type;
2566 /* Then encode the other info */
2567 for (pindex = 0; pindex < patches->len; ++pindex) {
2568 patch_info = g_ptr_array_index (patches, pindex);
2570 if (is_shared_got_patch (patch_info)) {
2571 guint32 offset = get_got_offset (acfg, patch_info);
2572 encode_value (offset, p, &p);
2574 encode_patch (acfg, patch_info, p, &p);
2582 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
2586 int pindex, buf_size, n_patches;
2590 MonoJumpInfo *patch_info;
2591 MonoMethodHeader *header;
2592 guint32 method_index;
2594 guint32 first_got_offset;
2596 method = cfg->orig_method;
2597 code = cfg->native_code;
2598 header = mono_method_get_header (method);
2600 method_index = get_method_index (acfg, method);
2602 /* Make the labels local */
2603 symbol = g_strdup_printf (".Lm_%x_p", method_index);
2605 /* Sort relocations */
2606 patches = g_ptr_array_new ();
2607 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
2608 g_ptr_array_add (patches, patch_info);
2609 g_ptr_array_sort (patches, compare_patches);
2611 first_got_offset = acfg->method_got_offsets [method_index];
2613 /**********************/
2614 /* Encode method info */
2615 /**********************/
2617 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
2618 p = buf = g_malloc (buf_size);
2620 if (mono_class_get_cctor (method->klass))
2621 encode_klass_ref (acfg, method->klass, p, &p);
2623 /* Not needed when loading the method */
2624 encode_value (0, p, &p);
2627 if (cfg->opt & MONO_OPT_SHARED) {
2628 encode_value (g_list_length (cfg->ldstr_list), p, &p);
2629 for (l = cfg->ldstr_list; l; l = l->next) {
2630 encode_value ((long)l->data, p, &p);
2634 /* Used only in shared mode */
2635 g_assert (!cfg->ldstr_list);
2638 for (pindex = 0; pindex < patches->len; ++pindex) {
2639 patch_info = g_ptr_array_index (patches, pindex);
2641 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
2642 (patch_info->type == MONO_PATCH_INFO_NONE)) {
2643 patch_info->type = MONO_PATCH_INFO_NONE;
2648 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
2649 /* Stored in a GOT slot initialized at module load time */
2650 patch_info->type = MONO_PATCH_INFO_NONE;
2654 if (is_plt_patch (patch_info)) {
2655 /* Calls are made through the PLT */
2656 patch_info->type = MONO_PATCH_INFO_NONE;
2664 g_assert (cfg->has_got_slots);
2666 encode_patch_list (acfg, patches, n_patches, first_got_offset, p, &p);
2668 acfg->stats.info_size += p - buf;
2670 /* Emit method info */
2672 emit_label (acfg, symbol);
2675 g_assert (p - buf < buf_size);
2676 emit_bytes (acfg, buf, p - buf);
2681 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
2684 int k, buf_size, method_index;
2685 guint32 debug_info_size;
2688 MonoMethodHeader *header;
2689 guint8 *p, *buf, *debug_info;
2690 MonoJitInfo *jinfo = cfg->jit_info;
2692 method = cfg->orig_method;
2693 code = cfg->native_code;
2694 header = mono_method_get_header (method);
2696 method_index = get_method_index (acfg, method);
2698 /* Make the labels local */
2699 symbol = g_strdup_printf (".Le_%x_p", method_index);
2701 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
2703 buf_size = header->num_clauses * 256 + debug_info_size + 128;
2704 p = buf = g_malloc (buf_size);
2706 encode_value (cfg->code_len, p, &p);
2707 encode_value (cfg->used_int_regs, p, &p);
2708 encode_value (jinfo->has_generic_jit_info, p, &p);
2710 /* Exception table */
2711 if (header->num_clauses) {
2712 for (k = 0; k < header->num_clauses; ++k) {
2713 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
2715 encode_value (ei->exvar_offset, p, &p);
2717 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
2718 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
2720 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
2721 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
2722 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
2726 if (jinfo->has_generic_jit_info) {
2727 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
2729 encode_value (gi->has_this ? 1 : 0, p, &p);
2730 encode_value (gi->this_reg, p, &p);
2731 encode_value (gi->this_offset, p, &p);
2734 * Need to encode jinfo->method too, since it is not equal to 'method'
2735 * when using generic sharing.
2737 encode_method_ref (acfg, jinfo->method, p, &p);
2740 g_assert (debug_info_size < buf_size);
2742 encode_value (debug_info_size, p, &p);
2743 if (debug_info_size) {
2744 memcpy (p, debug_info, debug_info_size);
2745 p += debug_info_size;
2746 g_free (debug_info);
2749 acfg->stats.ex_info_size += p - buf;
2753 emit_label (acfg, symbol);
2756 g_assert (p - buf < buf_size);
2757 emit_bytes (acfg, buf, p - buf);
2762 emit_klass_info (MonoAotCompile *acfg, guint32 token)
2764 MonoClass *klass = mono_class_get (acfg->image, token);
2768 gboolean no_special_static, cant_encode;
2769 gpointer iter = NULL;
2771 buf_size = 10240 + (klass->vtable_size * 16);
2772 p = buf = g_malloc (buf_size);
2776 mono_class_init (klass);
2778 mono_class_get_nested_types (klass, &iter);
2779 g_assert (klass->nested_classes_inited);
2781 mono_class_setup_vtable (klass);
2784 * Emit all the information which is required for creating vtables so
2785 * the runtime does not need to create the MonoMethod structures which
2786 * take up a lot of space.
2789 no_special_static = !mono_class_has_special_static_fields (klass);
2791 /* Check whenever we have enough info to encode the vtable */
2792 cant_encode = FALSE;
2793 for (i = 0; i < klass->vtable_size; ++i) {
2794 MonoMethod *cm = klass->vtable [i];
2796 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
2800 if (klass->generic_container || cant_encode) {
2801 encode_value (-1, p, &p);
2803 encode_value (klass->vtable_size, p, &p);
2804 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);
2805 if (klass->has_cctor)
2806 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
2807 if (klass->has_finalize)
2808 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
2810 encode_value (klass->instance_size, p, &p);
2811 encode_value (mono_class_data_size (klass), p, &p);
2812 encode_value (klass->packing_size, p, &p);
2813 encode_value (klass->min_align, p, &p);
2815 for (i = 0; i < klass->vtable_size; ++i) {
2816 MonoMethod *cm = klass->vtable [i];
2819 encode_method_ref (acfg, cm, p, &p);
2821 encode_value (0, p, &p);
2825 acfg->stats.class_info_size += p - buf;
2828 symbol = g_strdup_printf (".LK_I_%x", token - MONO_TOKEN_TYPE_DEF - 1);
2829 emit_label (acfg, symbol);
2832 g_assert (p - buf < buf_size);
2833 emit_bytes (acfg, buf, p - buf);
2838 * Calls made from AOTed code are routed through a table of jumps similar to the
2839 * ELF PLT (Program Linkage Table). The differences are the following:
2840 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
2841 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
2842 * jumps. This means the jumps need to be patched when the address of the callee is
2843 * known. Initially the PLT entries jump to code which transfers control to the
2844 * AOT runtime through the first PLT entry.
2847 emit_plt (MonoAotCompile *acfg)
2852 guint32 *plt_info_offsets;
2855 * Encode info need to resolve PLT entries.
2857 buf_size = acfg->plt_offset * 128;
2858 p = buf = g_malloc (buf_size);
2860 plt_info_offsets = g_new0 (guint32, acfg->plt_offset);
2862 for (i = 1; i < acfg->plt_offset; ++i) {
2863 MonoJumpInfo *patch_info = g_hash_table_lookup (acfg->plt_offset_to_patch, GUINT_TO_POINTER (i));
2865 plt_info_offsets [i] = p - buf;
2866 encode_value (patch_info->type, p, &p);
2867 encode_patch (acfg, patch_info, p, &p);
2871 symbol = g_strdup_printf ("plt");
2873 /* This section will be made read-write by the AOT loader */
2874 emit_section_change (acfg, ".text", 0);
2875 emit_global (acfg, symbol, TRUE);
2876 emit_alignment (acfg, PAGESIZE);
2877 emit_label (acfg, symbol);
2880 #if defined(USE_BIN_WRITER) && defined(__arm__)
2882 g_assert_not_reached ();
2885 for (i = 0; i < acfg->plt_offset; ++i) {
2888 label = g_strdup_printf (".Lp_%d", i);
2889 emit_label (acfg, label);
2893 * The first plt entry is used to transfer code to the AOT loader.
2896 #if defined(__i386__)
2898 /* It is filled up during loading by the AOT loader. */
2899 emit_zero_bytes (acfg, 16);
2901 /* Need to make sure this is 9 bytes long */
2902 emit_byte (acfg, '\xe9');
2903 emit_symbol_diff (acfg, "plt", ".", -4);
2904 emit_int32 (acfg, plt_info_offsets [i]);
2906 #elif defined(__x86_64__)
2908 * We can't emit jumps because they are 32 bits only so they can't be patched.
2909 * So we emit a jump table instead whose entries are patched by the AOT loader to
2910 * point to .Lpd entries. ELF stores these in the GOT too, but we don't, since
2911 * methods with GOT entries can't be called directly.
2912 * We also emit the default PLT code here since the PLT code will not be patched.
2913 * An x86_64 plt entry is 10 bytes long, init_plt () depends on this.
2915 /* jmpq *<offset>(%rip) */
2916 emit_byte (acfg, '\xff');
2917 emit_byte (acfg, '\x25');
2918 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)) -4);
2919 /* Used by mono_aot_get_plt_info_offset */
2920 emit_int32 (acfg, plt_info_offsets [i]);
2921 #elif defined(__arm__)
2923 * - optimize OP_AOTCONST implementation
2924 * - optimize the PLT entries
2925 * - optimize SWITCH AOT implementation
2926 * - implement IMT support
2928 emit_unset_mode (acfg);
2929 fprintf (acfg->fp, "\tldr ip, [pc, #4]\n");
2930 fprintf (acfg->fp, "\tadd ip, pc, ip\n");
2931 fprintf (acfg->fp, "\tldr pc, [ip, #0]\n");
2932 emit_symbol_diff (acfg, "plt_jump_table", ".", 0);
2933 /* Used by mono_aot_get_plt_info_offset */
2934 #if defined(__MACH__)
2935 fprintf (acfg->fp, "\n\t.long %d\n", plt_info_offsets [i]);
2937 fprintf (acfg->fp, "\n\t.word %d\n", plt_info_offsets [i]);
2941 g_assert_not_reached ();
2945 g_free (plt_info_offsets);
2947 symbol = g_strdup_printf ("plt_end");
2948 emit_global (acfg, symbol, TRUE);
2949 emit_label (acfg, symbol);
2953 symbol = g_strdup_printf ("plt_info");
2954 emit_global (acfg, symbol, FALSE);
2955 emit_label (acfg, symbol);
2958 g_assert (p - buf < buf_size);
2959 emit_bytes (acfg, buf, p - buf);
2962 symbol = g_strdup_printf ("plt_jump_table_addr");
2963 emit_section_change (acfg, ".data", 0);
2964 emit_global (acfg, symbol, FALSE);
2965 emit_alignment (acfg, 8);
2966 emit_label (acfg, symbol);
2967 emit_pointer (acfg, "plt_jump_table");
2970 symbol = g_strdup_printf ("plt_jump_table_size");
2971 emit_section_change (acfg, ".data", 0);
2972 emit_global (acfg, symbol, FALSE);
2973 emit_alignment (acfg, 8);
2974 emit_label (acfg, symbol);
2975 emit_symbol_diff (acfg, "plt_jump_table_end", "plt_jump_table", 0);
2978 /* Don't make this a global so accesses don't need relocations */
2979 symbol = g_strdup_printf ("plt_jump_table");
2980 emit_section_change (acfg, ".bss", 0);
2981 emit_label (acfg, symbol);
2984 #if defined(__x86_64__) || defined(__arm__)
2985 emit_zero_bytes (acfg, (int)(acfg->plt_offset * sizeof (gpointer)));
2988 symbol = g_strdup_printf ("plt_jump_table_end");
2989 emit_label (acfg, symbol);
2993 static G_GNUC_UNUSED void
2994 emit_named_code (MonoAotCompile *acfg, const char *name, guint8 *code,
2995 guint32 code_size, int got_offset, MonoJumpInfo *ji)
2999 MonoJumpInfo *patch_info;
3005 symbol = g_strdup_printf ("%s", name);
3007 emit_section_change (acfg, ".text", 0);
3008 emit_global (acfg, symbol, TRUE);
3009 emit_alignment (acfg, 16);
3010 emit_label (acfg, symbol);
3014 * The code should access everything through the GOT, so we pass
3017 emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE);
3021 /* Sort relocations */
3022 patches = g_ptr_array_new ();
3023 for (patch_info = ji; patch_info; patch_info = patch_info->next)
3024 g_ptr_array_add (patches, patch_info);
3025 g_ptr_array_sort (patches, compare_patches);
3027 buf_size = patches->len * 128 + 128;
3028 buf = g_malloc (buf_size);
3031 encode_patch_list (acfg, patches, patches->len, got_offset, p, &p);
3032 g_assert (p - buf < buf_size);
3034 symbol = g_strdup_printf ("%s_p", name);
3036 emit_section_change (acfg, ".text", 0);
3037 emit_global (acfg, symbol, FALSE);
3038 emit_label (acfg, symbol);
3041 emit_bytes (acfg, buf, p - buf);
3045 * When running in aot-only mode, we can't create trampolines at runtime, so we create
3046 * a few, and save them in the AOT file. Normal trampolines embed their argument as a
3047 * literal inside the trampoline code, we can't do that here, so instead we embed an offset
3048 * which needs to be added to the trampoline address to get the address of the GOT slot
3049 * which contains the argument value.
3050 * The generated trampolines jump to the generic trampolines using another GOT slot, which
3051 * will be setup by the AOT loader to point to the generic trampoline code of the given
3055 emit_trampolines (MonoAotCompile *acfg)
3059 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3066 if (!acfg->aot_opts.full_aot)
3069 g_assert (acfg->image->assembly);
3071 /* Currently, we only emit most trampolines into the mscorlib AOT image. */
3072 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
3073 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3075 * Emit the generic trampolines.
3077 * We could save some code by treating the generic trampolines as a wrapper
3078 * method, but that approach has its own complexities, so we choose the simpler
3081 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
3082 code = mono_arch_create_trampoline_code_full (tramp_type, &code_size, &ji, TRUE);
3084 /* Emit trampoline code */
3086 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
3088 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3093 code = mono_arch_get_nullified_class_init_trampoline (&code_size);
3094 emit_named_code (acfg, "nullified_class_init_trampoline", code, code_size, acfg->got_offset, NULL);
3096 /* Emit the exception related code pieces */
3097 code = mono_arch_get_restore_context_full (&code_size, &ji, TRUE);
3098 emit_named_code (acfg, "restore_context", code, code_size, acfg->got_offset, ji);
3099 code = mono_arch_get_call_filter_full (&code_size, &ji, TRUE);
3100 emit_named_code (acfg, "call_filter", code, code_size, acfg->got_offset, ji);
3101 code = mono_arch_get_throw_exception_full (&code_size, &ji, TRUE);
3102 emit_named_code (acfg, "throw_exception", code, code_size, acfg->got_offset, ji);
3103 code = mono_arch_get_rethrow_exception_full (&code_size, &ji, TRUE);
3104 emit_named_code (acfg, "rethrow_exception", code, code_size, acfg->got_offset, ji);
3105 code = mono_arch_get_throw_exception_by_name_full (&code_size, &ji, TRUE);
3106 emit_named_code (acfg, "throw_exception_by_name", code, code_size, acfg->got_offset, ji);
3107 code = mono_arch_get_throw_corlib_exception_full (&code_size, &ji, TRUE);
3108 emit_named_code (acfg, "throw_corlib_exception", code, code_size, acfg->got_offset, ji);
3111 for (i = 0; i < 128; ++i) {
3114 offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
3115 code = mono_arch_create_rgctx_lazy_fetch_trampoline_full (offset, &code_size, &ji, TRUE);
3116 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", offset);
3117 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3120 offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
3121 code = mono_arch_create_rgctx_lazy_fetch_trampoline_full (offset, &code_size, &ji, TRUE);
3122 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", offset);
3123 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3130 * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
3134 /* Reserve some entries at the end of the GOT for our use */
3135 acfg->num_trampoline_got_entries = acfg->num_aot_trampolines * 2;
3137 symbol = g_strdup_printf ("trampolines");
3139 emit_section_change (acfg, ".text", 0);
3140 emit_global (acfg, symbol, TRUE);
3141 emit_alignment (acfg, 16);
3142 emit_label (acfg, symbol);
3144 for (i = 0; i < acfg->num_aot_trampolines; ++i) {
3145 offset = acfg->got_offset + (i * 2);
3148 * The trampolines created here are variations of the specific
3149 * trampolines created in mono_arch_create_specific_trampoline (). The
3151 * - the generic trampoline address is taken from a got slot.
3152 * - the offset of the got slot where the trampoline argument is stored
3153 * is embedded in the instruction stream, and the generic trampoline
3154 * can load the argument by loading the offset, adding it to the
3155 * address of the trampoline to get the address of the got slot, and
3156 * loading the argument from the there.
3158 #if defined(__x86_64__)
3159 /* This should be exactly 16 bytes long */
3160 /* It should work together with the generic trampoline code in tramp-amd64.c */
3161 /* call *<offset>(%rip) */
3162 emit_byte (acfg, '\x41');
3163 emit_byte (acfg, '\xff');
3164 emit_byte (acfg, '\x15');
3165 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4);
3166 /* This should be relative to the start of the trampoline */
3167 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 19);
3168 emit_zero_bytes (acfg, 5);
3169 #elif defined(__arm__)
3173 /* Generate the trampoline code */
3174 /* This should be exactly 28 bytes long */
3177 ARM_PUSH (code, 0x5fff);
3178 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
3179 /* Load the value from the GOT */
3180 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
3182 ARM_MOV_REG_REG (code, ARMREG_LR, ARMREG_PC);
3183 ARM_MOV_REG_REG (code, ARMREG_PC, ARMREG_R1);
3185 g_assert (code - buf == 20);
3188 emit_bytes (acfg, buf, code - buf);
3189 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 8);
3190 emit_symbol_diff (acfg, "got", ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
3193 g_assert_not_reached ();
3198 /* Unbox trampolines */
3200 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3202 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3206 method = mono_get_method (acfg->image, token, NULL);
3208 cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
3209 if (!cfg || !cfg->orig_method->klass->valuetype || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL))
3212 symbol = g_strdup_printf ("unbox_trampoline_%d", i);
3214 emit_section_change (acfg, ".text", 0);
3215 emit_global (acfg, symbol, TRUE);
3216 emit_label (acfg, symbol);
3218 call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, cfg->orig_method));
3220 #if defined(__x86_64__)
3225 this_reg = mono_arch_get_this_arg_reg (mono_method_signature (cfg->orig_method), cfg->generic_sharing_context, NULL);
3227 amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
3229 emit_bytes (acfg, buf, code - buf);
3231 emit_byte (acfg, '\xe9');
3232 emit_symbol_diff (acfg, call_target, ".", -4);
3234 #elif defined(__arm__)
3241 if (MONO_TYPE_ISSTRUCT (mono_method_signature (cfg->orig_method)->ret))
3244 ARM_ADD_REG_IMM8 (code, this_pos, this_pos, sizeof (MonoObject));
3246 emit_bytes (acfg, buf, code - buf);
3247 /* jump to method */
3248 #if defined(USE_BIN_WRITER)
3250 g_assert_not_reached ();
3252 fprintf (acfg->fp, "\n\tb %s\n", call_target);
3255 g_assert_not_reached ();
3259 symbol = g_strdup_printf ("trampolines_info");
3261 emit_section_change (acfg, ".text", 0);
3262 emit_global (acfg, symbol, TRUE);
3263 emit_alignment (acfg, PAGESIZE);
3264 emit_label (acfg, symbol);
3266 emit_int32 (acfg, acfg->num_aot_trampolines);
3267 emit_int32 (acfg, acfg->got_offset);
3271 str_begins_with (const char *str1, const char *str2)
3273 int len = strlen (str2);
3274 return strncmp (str1, str2, len) == 0;
3278 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
3280 gchar **args, **ptr;
3282 memset (opts, 0, sizeof (*opts));
3284 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
3285 for (ptr = args; ptr && *ptr; ptr ++) {
3286 const char *arg = *ptr;
3288 if (str_begins_with (arg, "outfile=")) {
3289 opts->outfile = g_strdup (arg + strlen ("outfile="));
3290 } else if (str_begins_with (arg, "save-temps")) {
3291 opts->save_temps = TRUE;
3292 } else if (str_begins_with (arg, "keep-temps")) {
3293 opts->save_temps = TRUE;
3294 } else if (str_begins_with (arg, "write-symbols")) {
3295 opts->write_symbols = TRUE;
3296 } else if (str_begins_with (arg, "metadata-only")) {
3297 opts->metadata_only = TRUE;
3298 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
3299 opts->bind_to_runtime_version = TRUE;
3300 } else if (str_begins_with (arg, "full")) {
3301 opts->full_aot = TRUE;
3303 * The no-dlsym option is only useful on the iphone, and even there,
3304 * do to other limitations of the dynamic linker, it doesn't seem to
3305 * work. So disable it for now so we don't have to support it.
3308 } else if (str_begins_with (arg, "no-dlsym")) {
3309 opts->no_dlsym = TRUE;
3311 } else if (str_begins_with (arg, "static")) {
3312 opts->static_link = TRUE;
3313 opts->no_dlsym = TRUE;
3315 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
3324 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
3326 MonoMethod *method = (MonoMethod*)key;
3327 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
3328 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
3329 MonoAotCompile *acfg = user_data;
3331 new_ji->image = ji->image;
3332 new_ji->token = ji->token;
3333 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
3337 compile_method (MonoAotCompile *acfg, MonoMethod *method)
3340 MonoJumpInfo *patch_info;
3343 MonoMethod *wrapped;
3345 if (acfg->aot_opts.metadata_only)
3348 index = get_method_index (acfg, method);
3350 /* fixme: maybe we can also precompile wrapper methods */
3351 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3352 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3353 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
3354 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
3358 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
3361 wrapped = mono_marshal_method_from_wrapper (method);
3362 if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
3363 // FIXME: The wrapper should be generic too, but it is not
3366 acfg->stats.mcount++;
3368 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
3370 * FIXME: Enabling this causes virtual-sync.exe to fail, since the trampoline
3371 * code can't determine that it needs to insert a sync wrapper in the AOT case.
3377 if (!(acfg->opts & MONO_OPT_GSHARED)) {
3378 if (method->is_generic || method->klass->generic_container) {
3379 acfg->stats.genericcount ++;
3385 if (acfg->aot_opts.full_aot)
3386 mono_use_imt = FALSE;
3389 * Since these methods are the only ones which are compiled with
3390 * AOT support, and they are not used by runtime startup/shutdown code,
3391 * the runtime will not see AOT methods during AOT compilation,so it
3392 * does not need to support them by creating a fake GOT etc.
3394 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
3395 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3396 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3397 acfg->stats.genericcount ++;
3400 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
3401 /* Let the exception happen at runtime */
3405 if (cfg->disable_aot) {
3406 //printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
3407 acfg->stats.ocount++;
3408 mono_destroy_compile (cfg);
3412 /* Nullify patches which need no aot processing */
3413 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3414 switch (patch_info->type) {
3415 case MONO_PATCH_INFO_LABEL:
3416 case MONO_PATCH_INFO_BB:
3417 patch_info->type = MONO_PATCH_INFO_NONE;
3424 /* Collect method->token associations from the cfg */
3425 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
3428 * Check for absolute addresses.
3431 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3432 switch (patch_info->type) {
3433 case MONO_PATCH_INFO_ABS:
3434 /* unable to handle this */
3435 //printf ("Skip (abs addr): %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
3444 acfg->stats.abscount++;
3445 mono_destroy_compile (cfg);
3450 * Check for wrapper methods we can't encode.
3453 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3454 if ((patch_info->type == MONO_PATCH_INFO_METHODCONST) || (patch_info->type == MONO_PATCH_INFO_METHOD)) {
3455 switch (patch_info->data.method->wrapper_type) {
3456 case MONO_WRAPPER_NONE:
3457 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
3458 case MONO_WRAPPER_XDOMAIN_INVOKE:
3459 case MONO_WRAPPER_STFLD:
3460 case MONO_WRAPPER_LDFLD:
3461 case MONO_WRAPPER_LDFLDA:
3462 case MONO_WRAPPER_LDFLD_REMOTE:
3463 case MONO_WRAPPER_STFLD_REMOTE:
3464 case MONO_WRAPPER_STELEMREF:
3465 case MONO_WRAPPER_ISINST:
3466 case MONO_WRAPPER_PROXY_ISINST:
3467 case MONO_WRAPPER_ALLOC:
3468 case MONO_WRAPPER_REMOTING_INVOKE:
3469 case MONO_WRAPPER_STATIC_RGCTX_INVOKE:
3472 /* unable to handle this */
3473 //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));
3477 } else if (patch_info->type == MONO_PATCH_INFO_RGCTX_FETCH) {
3478 MonoJumpInfo *child = patch_info->data.rgctx_entry->data;
3480 if (child->type == MONO_PATCH_INFO_METHODCONST) {
3481 switch (child->data.method->wrapper_type) {
3482 case MONO_WRAPPER_NONE:
3483 case MONO_WRAPPER_STATIC_RGCTX_INVOKE:
3493 acfg->stats.wrappercount++;
3494 mono_destroy_compile (cfg);
3499 * Check for methods/klasses we can't encode.
3502 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3503 switch (patch_info->type) {
3504 case MONO_PATCH_INFO_METHOD:
3505 case MONO_PATCH_INFO_METHODCONST:
3506 if (patch_info->data.method->wrapper_type)
3508 if (!patch_info->data.method->token) {
3509 /* The method is part of a constructed type like Int[,].Set (). */
3510 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method))
3513 if (patch_info->data.method->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method)) {
3515 * encode_method_ref () can handle this method if it is not generic
3516 * and its class can be encoded.
3518 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method->klass) || mono_method_get_context (patch_info->data.method)->method_inst) {
3519 /* FIXME: Can't encode these */
3520 //printf ("Skip (can't encode): %s %d -> %s\n", mono_method_full_name (method, TRUE), patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
3525 case MONO_PATCH_INFO_VTABLE:
3526 case MONO_PATCH_INFO_CLASS_INIT:
3527 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3528 case MONO_PATCH_INFO_CLASS:
3529 case MONO_PATCH_INFO_IID:
3530 case MONO_PATCH_INFO_ADJUSTED_IID:
3531 if (!patch_info->data.klass->type_token)
3532 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))
3541 acfg->stats.ocount++;
3542 mono_destroy_compile (cfg);
3546 /* Determine whenever the method has GOT slots */
3547 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3548 switch (patch_info->type) {
3549 case MONO_PATCH_INFO_GOT_OFFSET:
3550 case MONO_PATCH_INFO_NONE:
3552 case MONO_PATCH_INFO_IMAGE:
3553 /* The assembly is stored in GOT slot 0 */
3554 if (patch_info->data.image != acfg->image)
3555 cfg->has_got_slots = TRUE;
3558 if (!is_plt_patch (patch_info))
3559 cfg->has_got_slots = TRUE;
3564 if (!cfg->has_got_slots)
3565 acfg->stats.methods_without_got_slots ++;
3567 /* Make a copy of the patch info which is in the mempool */
3569 MonoJumpInfo *patches = NULL, *patches_end = NULL;
3571 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3572 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3575 patches = new_patch_info;
3577 patches_end->next = new_patch_info;
3578 patches_end = new_patch_info;
3580 cfg->patch_info = patches;
3583 /* Free some fields used by cfg to conserve memory */
3584 mono_mempool_destroy (cfg->mempool);
3585 cfg->mempool = NULL;
3586 g_free (cfg->varinfo);
3587 cfg->varinfo = NULL;
3591 mono_regstate_free (cfg->rs);
3595 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
3597 acfg->cfgs [index] = cfg;
3599 g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
3601 acfg->stats.ccount++;
3605 load_profile_files (MonoAotCompile *acfg)
3609 int file_index, res, method_index, i;
3616 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);
3618 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR)) {
3623 infile = fopen (tmp, "r");
3626 printf ("Using profile data file '%s'\n", tmp);
3631 res = fscanf (infile, "%32s\n", ver);
3632 if ((res != 1) || strcmp (ver, "#VER:1") != 0) {
3633 printf ("Profile file has wrong version or invalid.\n");
3639 res = fscanf (infile, "%d\n", &token);
3643 method_index = mono_metadata_token_index (token) - 1;
3645 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index)))
3646 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
3651 /* Add missing methods */
3653 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3654 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
3655 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (i));
3657 unordered = g_list_reverse (unordered);
3658 if (acfg->method_order)
3659 g_list_last (acfg->method_order)->next = unordered;
3661 acfg->method_order = unordered;
3667 * Collect all patches which have shared GOT entries and alloc entries for them. The
3668 * rest will get entries allocated during emit_code ().
3671 alloc_got_slots (MonoAotCompile *acfg)
3677 /* Slot 0 is reserved for the address of the current assembly */
3678 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
3679 ji->type = MONO_PATCH_INFO_IMAGE;
3680 ji->data.image = acfg->image;
3682 get_shared_got_offset (acfg, ji);
3684 for (l = acfg->method_order; l != NULL; l = l->next) {
3685 i = GPOINTER_TO_UINT (l->data);
3687 if (acfg->cfgs [i]) {
3688 MonoCompile *cfg = acfg->cfgs [i];
3690 for (ji = cfg->patch_info; ji; ji = ji->next) {
3691 if (is_shared_got_patch (ji))
3692 get_shared_got_offset (acfg, ji);
3699 emit_code (MonoAotCompile *acfg)
3705 symbol = g_strdup_printf ("methods");
3706 emit_section_change (acfg, ".text", 0);
3707 emit_global (acfg, symbol, TRUE);
3708 emit_alignment (acfg, 8);
3709 emit_label (acfg, symbol);
3712 for (l = acfg->method_order; l != NULL; l = l->next) {
3713 i = GPOINTER_TO_UINT (l->data);
3716 emit_method_code (acfg, acfg->cfgs [i]);
3719 symbol = g_strdup_printf ("methods_end");
3720 emit_section_change (acfg, ".text", 0);
3721 emit_global (acfg, symbol, FALSE);
3722 emit_alignment (acfg, 8);
3723 emit_label (acfg, symbol);
3726 symbol = g_strdup_printf ("method_offsets");
3727 emit_section_change (acfg, ".text", 1);
3728 emit_global (acfg, symbol, FALSE);
3729 emit_alignment (acfg, 8);
3730 emit_label (acfg, symbol);
3733 for (i = 0; i < acfg->nmethods; ++i) {
3734 if (acfg->cfgs [i]) {
3735 symbol = g_strdup_printf (".Lm_%x", i);
3736 emit_symbol_diff (acfg, symbol, "methods", 0);
3739 emit_int32 (acfg, 0xffffffff);
3746 emit_info (MonoAotCompile *acfg)
3752 /* Emit method info */
3753 symbol = g_strdup_printf ("method_info");
3754 emit_section_change (acfg, ".text", 1);
3755 emit_global (acfg, symbol, FALSE);
3756 emit_alignment (acfg, 8);
3757 emit_label (acfg, symbol);
3760 /* To reduce size of generated assembly code */
3761 symbol = g_strdup_printf ("mi");
3762 emit_label (acfg, symbol);
3765 for (l = acfg->method_order; l != NULL; l = l->next) {
3766 i = GPOINTER_TO_UINT (l->data);
3769 emit_method_info (acfg, acfg->cfgs [i]);
3772 symbol = g_strdup_printf ("method_info_offsets");
3773 emit_section_change (acfg, ".text", 1);
3774 emit_global (acfg, symbol, FALSE);
3775 emit_alignment (acfg, 8);
3776 emit_label (acfg, symbol);
3779 for (i = 0; i < acfg->nmethods; ++i) {
3780 if (acfg->cfgs [i]) {
3781 symbol = g_strdup_printf (".Lm_%x_p", i);
3782 emit_symbol_diff (acfg, symbol, "mi", 0);
3785 emit_int32 (acfg, 0);
3792 emit_wrapper_info (MonoAotCompile *acfg)
3798 /* Emit method info */
3799 symbol = g_strdup_printf ("wrapper_info");
3800 emit_section_change (acfg, ".text", 1);
3801 emit_global (acfg, symbol, FALSE);
3802 emit_alignment (acfg, 8);
3803 emit_label (acfg, symbol);
3806 if (!acfg->aot_opts.full_aot)
3809 for (i = 0; i < acfg->nmethods; ++i) {
3810 MonoCompile *cfg = acfg->cfgs [i];
3812 if (!cfg || !cfg->orig_method->wrapper_type)
3815 index = get_method_index (acfg, cfg->orig_method);
3817 // FIXME: Optimize disk usage and lookup speed
3818 name = mono_method_full_name (cfg->orig_method, TRUE);
3819 emit_string (acfg, name);
3820 emit_alignment (acfg, 4);
3821 emit_int32 (acfg, index);
3824 emit_byte (acfg, 0);
3830 emit_method_order (MonoAotCompile *acfg)
3836 symbol = g_strdup_printf ("method_order");
3837 emit_section_change (acfg, ".text", 1);
3838 emit_global (acfg, symbol, FALSE);
3839 emit_alignment (acfg, 8);
3840 emit_label (acfg, symbol);
3843 /* First emit an index table */
3846 for (l = acfg->method_order; l != NULL; l = l->next) {
3847 i = GPOINTER_TO_UINT (l->data);
3849 if (acfg->cfgs [i]) {
3850 if ((index % 1024) == 0) {
3851 emit_int32 (acfg, i);
3859 emit_int32 (acfg, 0xffffff);
3861 /* Then emit the whole method order */
3862 for (l = acfg->method_order; l != NULL; l = l->next) {
3863 i = GPOINTER_TO_UINT (l->data);
3865 if (acfg->cfgs [i]) {
3866 emit_int32 (acfg, i);
3871 symbol = g_strdup_printf ("method_order_end");
3872 emit_section_change (acfg, ".text", 1);
3873 emit_global (acfg, symbol, FALSE);
3874 emit_label (acfg, symbol);
3879 emit_exception_info (MonoAotCompile *acfg)
3884 symbol = g_strdup_printf ("ex_info");
3885 emit_section_change (acfg, ".text", 1);
3886 emit_global (acfg, symbol, FALSE);
3887 emit_alignment (acfg, 8);
3888 emit_label (acfg, symbol);
3891 /* To reduce size of generated assembly */
3892 symbol = g_strdup_printf ("ex");
3893 emit_label (acfg, symbol);
3896 for (i = 0; i < acfg->nmethods; ++i) {
3898 emit_exception_debug_info (acfg, acfg->cfgs [i]);
3901 symbol = g_strdup_printf ("ex_info_offsets");
3902 emit_section_change (acfg, ".text", 1);
3903 emit_global (acfg, symbol, FALSE);
3904 emit_alignment (acfg, 8);
3905 emit_label (acfg, symbol);
3908 for (i = 0; i < acfg->nmethods; ++i) {
3909 if (acfg->cfgs [i]) {
3910 symbol = g_strdup_printf (".Le_%x_p", i);
3911 emit_symbol_diff (acfg, symbol, "ex", 0);
3914 emit_int32 (acfg, 0);
3921 emit_class_info (MonoAotCompile *acfg)
3926 symbol = g_strdup_printf ("class_info");
3927 emit_section_change (acfg, ".text", 1);
3928 emit_global (acfg, symbol, FALSE);
3929 emit_alignment (acfg, 8);
3930 emit_label (acfg, symbol);
3933 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
3934 emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
3936 symbol = g_strdup_printf ("class_info_offsets");
3937 emit_section_change (acfg, ".text", 1);
3938 emit_global (acfg, symbol, FALSE);
3939 emit_alignment (acfg, 8);
3940 emit_label (acfg, symbol);
3943 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3944 symbol = g_strdup_printf (".LK_I_%x", i);
3945 emit_symbol_diff (acfg, symbol, "class_info", 0);
3951 typedef struct ClassNameTableEntry {
3952 guint32 token, index;
3953 struct ClassNameTableEntry *next;
3954 } ClassNameTableEntry;
3957 emit_class_name_table (MonoAotCompile *acfg)
3960 guint32 token, hash;
3965 ClassNameTableEntry *entry, *new_entry;
3968 * Construct a chained hash table for mapping class names to typedef tokens.
3970 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
3971 table = g_ptr_array_sized_new (table_size);
3972 for (i = 0; i < table_size; ++i)
3973 g_ptr_array_add (table, NULL);
3974 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3975 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3976 klass = mono_class_get (acfg->image, token);
3977 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
3978 hash = g_str_hash (full_name) % table_size;
3981 /* FIXME: Allocate from the mempool */
3982 new_entry = g_new0 (ClassNameTableEntry, 1);
3983 new_entry->token = token;
3985 entry = g_ptr_array_index (table, hash);
3986 if (entry == NULL) {
3987 new_entry->index = hash;
3988 g_ptr_array_index (table, hash) = new_entry;
3991 entry = entry->next;
3993 entry->next = new_entry;
3994 new_entry->index = table->len;
3995 g_ptr_array_add (table, new_entry);
3999 /* Emit the table */
4000 symbol = g_strdup_printf ("class_name_table");
4001 emit_section_change (acfg, ".text", 0);
4002 emit_global (acfg, symbol, FALSE);
4003 emit_alignment (acfg, 8);
4004 emit_label (acfg, symbol);
4007 /* FIXME: Optimize memory usage */
4008 g_assert (table_size < 65000);
4009 emit_int16 (acfg, table_size);
4010 g_assert (table->len < 65000);
4011 for (i = 0; i < table->len; ++i) {
4012 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
4014 if (entry == NULL) {
4015 emit_int16 (acfg, 0);
4016 emit_int16 (acfg, 0);
4018 emit_int16 (acfg, mono_metadata_token_index (entry->token));
4020 emit_int16 (acfg, entry->next->index);
4022 emit_int16 (acfg, 0);
4028 emit_image_table (MonoAotCompile *acfg)
4034 * The image table is small but referenced in a lot of places.
4035 * So we emit it at once, and reference its elements by an index.
4038 symbol = g_strdup_printf ("mono_image_table");
4039 emit_section_change (acfg, ".text", 1);
4040 emit_global (acfg, symbol, FALSE);
4041 emit_alignment (acfg, 8);
4042 emit_label (acfg, symbol);
4045 emit_int32 (acfg, acfg->image_table->len);
4046 for (i = 0; i < acfg->image_table->len; i++) {
4047 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
4048 MonoAssemblyName *aname = &image->assembly->aname;
4050 /* FIXME: Support multi-module assemblies */
4051 g_assert (image->assembly->image == image);
4053 emit_string (acfg, image->assembly_name);
4054 emit_string (acfg, image->guid);
4055 emit_string (acfg, aname->culture ? aname->culture : "");
4056 emit_string (acfg, (const char*)aname->public_key_token);
4058 emit_alignment (acfg, 8);
4059 emit_int32 (acfg, aname->flags);
4060 emit_int32 (acfg, aname->major);
4061 emit_int32 (acfg, aname->minor);
4062 emit_int32 (acfg, aname->build);
4063 emit_int32 (acfg, aname->revision);
4068 emit_got_info (MonoAotCompile *acfg)
4073 guint32 *got_info_offsets;
4077 * - optimize offsets table.
4078 * - reduce number of exported symbols.
4079 * - emit info for a klass only once.
4080 * - determine when a method uses a GOT slot which is guaranteed to be already
4082 * - clean up and document the code.
4083 * - use String.Empty in class libs.
4086 /* Encode info required to decode shared GOT entries */
4087 buf_size = acfg->shared_patches->len * 64;
4088 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
4089 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->shared_patches->len * sizeof (guint32));
4090 for (i = 0; i < acfg->shared_patches->len; ++i) {
4091 MonoJumpInfo *ji = g_ptr_array_index (acfg->shared_patches, i);
4093 /* No need to encode the patch type */
4094 got_info_offsets [i] = p - buf;
4095 encode_patch (acfg, ji, p, &p);
4098 g_assert (p - buf <= buf_size);
4100 acfg->stats.got_info_size = p - buf;
4102 /* Emit got_info table */
4103 symbol = g_strdup_printf ("got_info");
4104 emit_section_change (acfg, ".text", 1);
4105 emit_global (acfg, symbol, FALSE);
4106 emit_alignment (acfg, 8);
4107 emit_label (acfg, symbol);
4110 emit_bytes (acfg, buf, p - buf);
4112 /* Emit got_info_offsets table */
4113 symbol = g_strdup_printf ("got_info_offsets");
4114 emit_section_change (acfg, ".text", 1);
4115 emit_global (acfg, symbol, FALSE);
4116 emit_alignment (acfg, 8);
4117 emit_label (acfg, symbol);
4120 for (i = 0; i < acfg->shared_patches->len; ++i)
4121 emit_int32 (acfg, got_info_offsets [i]);
4123 acfg->stats.got_info_offsets_size = acfg->shared_patches->len * 4;
4127 emit_got (MonoAotCompile *acfg)
4131 /* Don't make GOT global so accesses to it don't need relocations */
4132 symbol = g_strdup_printf ("got");
4133 emit_section_change (acfg, ".bss", 1);
4134 emit_alignment (acfg, 8);
4135 emit_label (acfg, symbol);
4136 if ((acfg->got_offset + acfg->num_trampoline_got_entries) > 0)
4137 emit_zero_bytes (acfg, (int)((acfg->got_offset + acfg->num_trampoline_got_entries) * sizeof (gpointer)));
4140 symbol = g_strdup_printf ("got_addr");
4141 emit_section_change (acfg, ".data", 1);
4142 emit_global (acfg, symbol, FALSE);
4143 emit_alignment (acfg, 8);
4144 emit_label (acfg, symbol);
4145 emit_pointer (acfg, "got");
4148 symbol = g_strdup_printf ("got_size");
4149 emit_section_change (acfg, ".data", 1);
4150 emit_global (acfg, symbol, FALSE);
4151 emit_alignment (acfg, 8);
4152 emit_label (acfg, symbol);
4153 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
4158 emit_globals (MonoAotCompile *acfg)
4162 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
4164 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
4166 opts_str = g_strdup_printf ("%d", acfg->opts);
4167 emit_string_symbol (acfg, "mono_aot_opt_flags", opts_str);
4170 emit_string_symbol (acfg, "mono_aot_full_aot", acfg->aot_opts.full_aot ? "TRUE" : "FALSE");
4172 if (acfg->aot_opts.bind_to_runtime_version)
4173 emit_string_symbol (acfg, "mono_runtime_version", FULL_VERSION);
4175 emit_string_symbol (acfg, "mono_runtime_version", "");
4178 * Some platforms like the iphone have no working dlsym (). To work around this,
4179 * we create an ELF ctor function which will be invoked by dlopen, and which
4180 * will call a function in the AOT loader to register the symbols used by the
4182 * When static linking, we emit a global which will point to the symbol table.
4184 if (acfg->aot_opts.no_dlsym) {
4188 if (acfg->aot_opts.static_link)
4189 /* Emit a string holding the assembly name */
4190 emit_string_symbol (acfg, "mono_aot_assembly_name", acfg->image->assembly->aname.name);
4192 /* Emit the names */
4193 for (i = 0; i < acfg->globals->len; ++i) {
4194 char *name = g_ptr_array_index (acfg->globals, i);
4196 symbol = g_strdup_printf ("name_%d", i);
4197 emit_section_change (acfg, ".text", 1);
4198 emit_label (acfg, symbol);
4199 emit_string (acfg, name);
4203 /* Emit the globals table */
4204 symbol = g_strdup_printf ("globals");
4205 emit_section_change (acfg, ".data", 0);
4206 /* This is not a global, since it is accessed by the init function */
4207 emit_alignment (acfg, 8);
4208 emit_label (acfg, symbol);
4210 for (i = 0; i < acfg->globals->len; ++i) {
4211 char *name = g_ptr_array_index (acfg->globals, i);
4213 symbol = g_strdup_printf ("name_%d", i);
4214 emit_pointer (acfg, symbol);
4217 symbol = g_strdup_printf ("%s", name);
4218 emit_pointer (acfg, symbol);
4221 /* Null terminate the table */
4222 emit_pointer (acfg, NULL);
4223 emit_pointer (acfg, NULL);
4225 if (acfg->aot_opts.static_link) {
4227 * Emit a global symbol which can be passed by an embedding app to
4228 * mono_aot_register_module ().
4230 symbol = g_strdup_printf ("mono_aot_module_%s_info", acfg->image->assembly->aname.name);
4231 acfg->static_linking_symbol = g_strdup (symbol);
4232 emit_global_inner (acfg, symbol, FALSE);
4233 emit_alignment (acfg, 8);
4234 emit_label (acfg, symbol);
4235 emit_pointer (acfg, "globals");
4237 symbol = g_strdup_printf ("init_%s", acfg->image->assembly->aname.name);
4238 emit_section_change (acfg, ".text", 1);
4239 emit_alignment (acfg, 8);
4240 emit_label (acfg, symbol);
4241 #ifdef USE_BIN_WRITER
4242 g_assert_not_reached ();
4245 fprintf (acfg->fp, "leaq globals(%%rip), %%rdi\n");
4246 fprintf (acfg->fp, "call mono_aot_register_globals@PLT\n");
4247 fprintf (acfg->fp, "ret\n");
4248 fprintf (acfg->fp, ".section .ctors,\"aw\",@progbits\n");
4249 emit_alignment (acfg, 8);
4250 emit_pointer (acfg, symbol);
4251 #elif defined(__arm__)
4253 * Taken from gcc generated code for:
4255 * void foo () { bar (&i); }
4256 * gcc --shared -fPIC -O2
4258 fprintf (acfg->fp, "ldr r3, .L5\n");
4259 fprintf (acfg->fp, "ldr r0, .L5+4\n");
4260 fprintf (acfg->fp, ".LPIC0:\n");
4261 fprintf (acfg->fp, "add r3, pc, r3\n");
4262 fprintf (acfg->fp, "add r0, r3, r0\n");
4263 fprintf (acfg->fp, "b mono_aot_register_globals(PLT)\n");
4265 fprintf (acfg->fp, ".L5:\n");
4266 fprintf (acfg->fp, ".word _GLOBAL_OFFSET_TABLE_-(.LPIC0+8)\n");
4267 fprintf (acfg->fp, ".word globals(GOTOFF)\n");
4269 fprintf (acfg->fp, ".section .init_array,\"aw\",%%init_array\n");
4270 fprintf (acfg->fp, ".align 2\n");
4271 fprintf (acfg->fp, ".word %s(target1)\n", symbol);
4273 g_assert_not_reached ();
4282 acfg_free (MonoAotCompile *acfg)
4286 for (i = 0; i < acfg->nmethods; ++i)
4288 g_free (acfg->cfgs [i]);
4289 g_free (acfg->cfgs);
4290 g_free (acfg->method_got_offsets);
4291 g_free (acfg->static_linking_symbol);
4292 g_ptr_array_free (acfg->methods, TRUE);
4293 g_ptr_array_free (acfg->shared_patches, TRUE);
4294 g_ptr_array_free (acfg->image_table, TRUE);
4295 g_ptr_array_free (acfg->globals, TRUE);
4296 g_hash_table_destroy (acfg->method_indexes);
4297 g_hash_table_destroy (acfg->plt_offset_to_patch);
4298 g_hash_table_destroy (acfg->patch_to_plt_offset);
4299 g_hash_table_destroy (acfg->patch_to_shared_got_offset);
4300 g_hash_table_destroy (acfg->method_to_cfg);
4301 g_hash_table_destroy (acfg->token_info_hash);
4302 g_hash_table_destroy (acfg->image_hash);
4303 mono_mempool_destroy (acfg->mempool);
4308 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
4310 MonoImage *image = ass->image;
4313 MonoAotCompile *acfg;
4315 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
4317 acfg = g_new0 (MonoAotCompile, 1);
4318 acfg->methods = g_ptr_array_new ();
4319 acfg->method_indexes = g_hash_table_new (NULL, NULL);
4320 acfg->plt_offset_to_patch = g_hash_table_new (NULL, NULL);
4321 acfg->patch_to_plt_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4322 acfg->patch_to_shared_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4323 acfg->shared_patches = g_ptr_array_new ();
4324 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
4325 acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, g_free);
4326 acfg->image_hash = g_hash_table_new (NULL, NULL);
4327 acfg->image_table = g_ptr_array_new ();
4328 acfg->globals = g_ptr_array_new ();
4329 acfg->image = image;
4331 acfg->mempool = mono_mempool_new ();
4333 mono_aot_parse_options (aot_options, &acfg->aot_opts);
4335 load_profile_files (acfg);
4339 acfg->num_aot_trampolines = acfg->aot_opts.full_aot ? 10240 : 0;
4341 acfg->method_index = 1;
4343 /* Collect methods */
4344 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
4346 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4348 method = mono_get_method (acfg->image, token, NULL);
4350 if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4351 /* Compile the wrapper instead */
4352 /* We do this here instead of add_wrappers () because it is easy to do it here */
4353 MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
4357 /* Since we add the normal methods first, their index will be equal to their zero based token index */
4358 add_method_with_index (acfg, method, i);
4359 acfg->method_index ++;
4362 if (acfg->aot_opts.full_aot)
4363 add_wrappers (acfg);
4365 acfg->nmethods = acfg->methods->len + 1;
4366 acfg->cfgs = g_new0 (MonoCompile*, acfg->nmethods + 32);
4367 acfg->method_got_offsets = g_new0 (guint32, acfg->nmethods + 32);
4369 /* PLT offset 0 is reserved for the PLT trampoline */
4370 acfg->plt_offset = 1;
4372 /* Compile methods */
4373 for (i = 0; i < acfg->methods->len; ++i) {
4374 compile_method (acfg, g_ptr_array_index (acfg->methods, i));
4377 alloc_got_slots (acfg);
4383 emit_wrapper_info (acfg);
4385 emit_method_order (acfg);
4387 emit_trampolines (acfg);
4389 emit_class_name_table (acfg);
4391 emit_got_info (acfg);
4393 emit_exception_info (acfg);
4395 emit_class_info (acfg);
4399 emit_image_table (acfg);
4403 emit_globals (acfg);
4405 symbol = g_strdup_printf ("mem_end");
4406 emit_section_change (acfg, ".text", 1);
4407 emit_global (acfg, symbol, FALSE);
4408 emit_alignment (acfg, 8);
4409 emit_label (acfg, symbol);
4412 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)));
4414 res = emit_writeout (acfg);
4420 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);
4421 if (acfg->stats.genericcount)
4422 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
4423 if (acfg->stats.abscount)
4424 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
4425 if (acfg->stats.wrappercount)
4426 printf ("%d methods contain wrapper references (%d%%)\n", acfg->stats.wrappercount, acfg->stats.mcount ? (acfg->stats.wrappercount * 100) / acfg->stats.mcount : 100);
4427 if (acfg->stats.lmfcount)
4428 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
4429 if (acfg->stats.ocount)
4430 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
4431 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);
4432 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
4434 printf ("GOT slot distribution:\n");
4435 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
4436 if (acfg->stats.got_slot_types [i])
4437 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
4449 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)