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 (mono_method_signature (method)->is_inflated) {
1794 * This is a generic method, find the original token which referenced it and
1796 * Obtain the token from information recorded by the JIT.
1798 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1800 image_index = get_image_index (acfg, ji->image);
1801 g_assert (image_index < MAX_IMAGE_INDEX);
1805 encode_value ((255 << 24), p, &p);
1806 encode_value (image_index, p, &p);
1807 encode_value (token, p, &p);
1809 MonoMethod *declaring;
1810 MonoGenericContext *context = mono_method_get_context (method);
1811 MonoGenericInst *inst;
1814 g_assert (method->is_inflated);
1815 declaring = ((MonoMethodInflated*)method)->declaring;
1818 * This might be a non-generic method of a generic instance, which
1819 * doesn't have a token since the reference is generated by the JIT
1820 * like Nullable:Box/Unbox, or by generic sharing.
1824 encode_value ((254 << 24), p, &p);
1825 /* Encode the klass */
1826 encode_klass_ref (acfg, method->klass, p, &p);
1827 /* Encode the method */
1828 image_index = get_image_index (acfg, method->klass->image);
1829 g_assert (image_index < MAX_IMAGE_INDEX);
1830 g_assert (declaring->token);
1831 token = declaring->token;
1832 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1833 encode_value (image_index, p, &p);
1834 encode_value (token, p, &p);
1836 /* Encode the context */
1837 inst = context->class_inst;
1838 encode_value (inst ? 1 : 0, p, &p);
1840 encode_value (inst->type_argc, p, &p);
1841 for (i = 0; i < inst->type_argc; ++i)
1842 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1844 inst = context->method_inst;
1845 encode_value (inst ? 1 : 0, p, &p);
1847 encode_value (inst->type_argc, p, &p);
1848 for (i = 0; i < inst->type_argc; ++i)
1849 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1852 } else if (token == 0) {
1853 /* This might be a method of a constructed type like int[,].Set */
1854 /* Obtain the token from information recorded by the JIT */
1855 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1857 image_index = get_image_index (acfg, ji->image);
1858 g_assert (image_index < MAX_IMAGE_INDEX);
1862 encode_value ((255 << 24), p, &p);
1863 encode_value (image_index, p, &p);
1864 encode_value (token, p, &p);
1866 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1867 encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
1873 compare_patches (gconstpointer a, gconstpointer b)
1877 i = (*(MonoJumpInfo**)a)->ip.i;
1878 j = (*(MonoJumpInfo**)b)->ip.i;
1892 * Return whenever PATCH_INFO refers to a direct call, and thus requires a
1895 static inline gboolean
1896 is_plt_patch (MonoJumpInfo *patch_info)
1898 switch (patch_info->type) {
1899 case MONO_PATCH_INFO_METHOD:
1900 case MONO_PATCH_INFO_WRAPPER:
1901 case MONO_PATCH_INFO_INTERNAL_METHOD:
1902 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
1903 case MONO_PATCH_INFO_CLASS_INIT:
1904 case MONO_PATCH_INFO_RGCTX_FETCH:
1905 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
1913 * is_shared_got_patch:
1915 * Return whenever PATCH_INFO refers to a patch which needs a shared GOT
1917 * Keep it in sync with the version in aot-runtime.c.
1919 static inline gboolean
1920 is_shared_got_patch (MonoJumpInfo *patch_info)
1922 switch (patch_info->type) {
1923 case MONO_PATCH_INFO_VTABLE:
1924 case MONO_PATCH_INFO_CLASS:
1925 case MONO_PATCH_INFO_IID:
1926 case MONO_PATCH_INFO_ADJUSTED_IID:
1927 case MONO_PATCH_INFO_FIELD:
1928 case MONO_PATCH_INFO_SFLDA:
1929 case MONO_PATCH_INFO_DECLSEC:
1930 case MONO_PATCH_INFO_LDTOKEN:
1931 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1932 case MONO_PATCH_INFO_RVA:
1933 case MONO_PATCH_INFO_METHODCONST:
1941 get_plt_offset (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
1945 if (is_plt_patch (patch_info)) {
1946 int idx = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_plt_offset, patch_info));
1951 MonoJumpInfo *new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
1953 res = acfg->plt_offset;
1954 g_hash_table_insert (acfg->plt_offset_to_patch, GUINT_TO_POINTER (res), new_ji);
1955 g_hash_table_insert (acfg->patch_to_plt_offset, new_ji, GUINT_TO_POINTER (res));
1956 acfg->plt_offset ++;
1966 * Returns the offset of the GOT slot where the runtime object resulting from resolving
1967 * JI could be found if it exists, otherwise allocates a new one.
1970 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1974 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji));
1976 return got_offset - 1;
1978 got_offset = acfg->got_offset;
1979 acfg->got_offset ++;
1981 acfg->stats.got_slots ++;
1982 acfg->stats.got_slot_types [ji->type] ++;
1988 get_shared_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1993 if (!g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji)) {
1994 got_offset = get_got_offset (acfg, ji);
1995 copy = mono_patch_info_dup_mp (acfg->mempool, ji);
1996 g_hash_table_insert (acfg->patch_to_shared_got_offset, copy, GUINT_TO_POINTER (got_offset + 1));
1997 g_ptr_array_add (acfg->shared_patches, copy);
2000 return get_got_offset (acfg, ji);
2003 /* Add a method to the list of methods which need to be emitted */
2005 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index)
2007 if (!g_hash_table_lookup (acfg->method_indexes, method)) {
2008 g_ptr_array_add (acfg->methods, method);
2009 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
2014 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
2016 int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2024 add_method (MonoAotCompile *acfg, MonoMethod *method)
2026 int index = acfg->method_index;
2028 add_method_with_index (acfg, method, index);
2030 /* FIXME: Fix quadratic behavior */
2031 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (index));
2033 acfg->method_index ++;
2039 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
2041 MonoAotCompile *acfg = user_data;
2042 MonoJitICallInfo *callinfo = value;
2043 MonoMethod *wrapper;
2049 name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
2050 wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, check_for_pending_exc);
2053 add_method (acfg, wrapper);
2057 get_runtime_invoke_sig (MonoMethodSignature *sig)
2059 MonoMethodBuilder *mb;
2062 mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
2063 m = mono_mb_create_method (mb, sig, 16);
2064 return mono_marshal_get_runtime_invoke (m);
2068 add_wrappers (MonoAotCompile *acfg)
2072 MonoMethodSignature *csig;
2075 * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
2076 * so there is only one wrapper of a given type, or inlining their contents into their
2081 * FIXME: This depends on the fact that different wrappers have different
2085 /* FIXME: Collect these automatically */
2087 /* Runtime invoke wrappers */
2089 /* void runtime-invoke () [.cctor] */
2090 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2091 csig->ret = &mono_defaults.void_class->byval_arg;
2092 add_method (acfg, get_runtime_invoke_sig (csig));
2094 /* void runtime-invoke () [Finalize] */
2095 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2097 csig->ret = &mono_defaults.void_class->byval_arg;
2098 add_method (acfg, get_runtime_invoke_sig (csig));
2100 /* void runtime-invoke (string) [exception ctor] */
2101 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
2103 csig->ret = &mono_defaults.void_class->byval_arg;
2104 csig->params [0] = &mono_defaults.string_class->byval_arg;
2105 add_method (acfg, get_runtime_invoke_sig (csig));
2107 /* void runtime-invoke (string, string) [exception ctor] */
2108 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2110 csig->ret = &mono_defaults.void_class->byval_arg;
2111 csig->params [0] = &mono_defaults.string_class->byval_arg;
2112 csig->params [1] = &mono_defaults.string_class->byval_arg;
2113 add_method (acfg, get_runtime_invoke_sig (csig));
2115 /* string runtime-invoke () [Exception.ToString ()] */
2116 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2118 csig->ret = &mono_defaults.string_class->byval_arg;
2119 add_method (acfg, get_runtime_invoke_sig (csig));
2121 /* void runtime-invoke (string, Exception) [exception ctor] */
2122 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2124 csig->ret = &mono_defaults.void_class->byval_arg;
2125 csig->params [0] = &mono_defaults.string_class->byval_arg;
2126 csig->params [1] = &mono_defaults.exception_class->byval_arg;
2127 add_method (acfg, get_runtime_invoke_sig (csig));
2129 /* Assembly runtime-invoke (string, bool) [DoAssemblyResolve] */
2130 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2132 csig->ret = &(mono_class_from_name (
2133 mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
2134 csig->params [0] = &mono_defaults.string_class->byval_arg;
2135 csig->params [1] = &mono_defaults.boolean_class->byval_arg;
2136 add_method (acfg, get_runtime_invoke_sig (csig));
2138 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2140 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2142 method = mono_get_method (acfg->image, token, NULL);
2144 if (!strcmp (method->name, "Main"))
2145 add_method (acfg, mono_marshal_get_runtime_invoke (method));
2148 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
2149 /* JIT icall wrappers */
2150 /* FIXME: locking */
2151 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
2153 /* Managed Allocators */
2154 nallocators = mono_gc_get_managed_allocator_types ();
2155 for (i = 0; i < nallocators; ++i) {
2156 m = mono_gc_get_managed_allocator_by_type (i);
2158 add_method (acfg, m);
2162 add_method (acfg, mono_marshal_get_stelemref ());
2165 /* remoting-invoke wrappers */
2166 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2168 MonoMethodSignature *sig;
2169 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2171 method = mono_get_method (acfg->image, token, NULL);
2173 sig = mono_method_signature (method);
2175 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class) &&
2176 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
2177 m = mono_marshal_get_remoting_invoke_with_check (method);
2179 add_method (acfg, m);
2185 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only)
2187 int i, pindex, start_index, method_index;
2189 MonoJumpInfo *patch_info;
2190 MonoMethodHeader *header;
2195 header = mono_method_get_header (method);
2197 method_index = get_method_index (acfg, method);
2200 /* Collect and sort relocations */
2201 patches = g_ptr_array_new ();
2202 for (patch_info = relocs; patch_info; patch_info = patch_info->next)
2203 g_ptr_array_add (patches, patch_info);
2204 g_ptr_array_sort (patches, compare_patches);
2207 for (i = 0; i < code_len; i++) {
2209 for (pindex = start_index; pindex < patches->len; ++pindex) {
2210 patch_info = g_ptr_array_index (patches, pindex);
2211 if (patch_info->ip.i >= i)
2215 #ifdef MONO_ARCH_AOT_SUPPORTED
2217 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
2218 start_index = pindex;
2220 switch (patch_info->type) {
2221 case MONO_PATCH_INFO_NONE:
2223 case MONO_PATCH_INFO_GOT_OFFSET: {
2224 guint32 offset = mono_arch_get_patch_offset (code + i);
2225 emit_bytes (acfg, code + i, offset);
2226 emit_symbol_diff (acfg, "got", ".", offset);
2228 i += offset + 4 - 1;
2233 char *direct_call_target;
2235 if (!is_got_patch (patch_info->type))
2239 * If this patch is a call, try emitting a direct call instead of
2240 * through a PLT entry. This is possible if the called method is in
2241 * the same assembly and requires no initialization.
2243 direct_call_target = NULL;
2244 if (!got_only && (patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == method->klass->image)) {
2245 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
2247 if (!callee_cfg->has_got_slots && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)) {
2248 //printf ("DIRECT: %s %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (callee_cfg->method, TRUE));
2249 direct_call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, callee_cfg->orig_method));
2250 patch_info->type = MONO_PATCH_INFO_NONE;
2251 acfg->stats.direct_calls ++;
2255 acfg->stats.all_calls ++;
2258 if (!got_only && !direct_call_target) {
2259 int plt_offset = get_plt_offset (acfg, patch_info);
2260 if (plt_offset != -1) {
2261 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
2262 direct_call_target = g_strdup_printf (".Lp_%d", plt_offset);
2264 /* Nullify the patch */
2265 patch_info->type = MONO_PATCH_INFO_NONE;
2269 if (direct_call_target) {
2270 #if defined(__i386__) || defined(__x86_64__)
2271 g_assert (code [i] == 0xe8);
2272 /* Need to make sure this is exactly 5 bytes long */
2273 emit_byte (acfg, '\xe8');
2274 emit_symbol_diff (acfg, direct_call_target, ".", -4);
2276 #elif defined(__arm__)
2277 #ifdef USE_BIN_WRITER
2278 /* FIXME: Can't encode this using the current symbol writer functions */
2279 g_assert_not_reached ();
2281 emit_unset_mode (acfg);
2282 fprintf (acfg->fp, "bl %s\n", direct_call_target);
2287 g_free (direct_call_target);
2289 got_slot = get_got_offset (acfg, patch_info);
2291 emit_bytes (acfg, code + i, mono_arch_get_patch_offset (code + i));
2293 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
2294 #elif defined(__i386__)
2295 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
2296 #elif defined(__arm__)
2297 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
2299 g_assert_not_reached ();
2302 i += mono_arch_get_patch_offset (code + i) + 4 - 1;
2308 #endif /* MONO_ARCH_AOT_SUPPORTED */
2311 emit_bytes (acfg, code + i, 1);
2316 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
2322 int func_alignment = 16;
2323 MonoMethodHeader *header;
2325 method = cfg->orig_method;
2326 code = cfg->native_code;
2327 header = mono_method_get_header (method);
2329 method_index = get_method_index (acfg, method);
2331 /* Make the labels local */
2332 symbol = g_strdup_printf (".Lm_%x", method_index);
2334 emit_alignment (acfg, func_alignment);
2335 emit_label (acfg, symbol);
2336 if (acfg->aot_opts.write_symbols)
2337 emit_global (acfg, symbol, TRUE);
2339 if (cfg->verbose_level > 0)
2340 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
2343 acfg->stats.code_size += cfg->code_len;
2345 acfg->method_got_offsets [method_index] = acfg->got_offset;
2347 emit_and_reloc_code (acfg, method, code, cfg->code_len, cfg->patch_info, FALSE);
2355 * Encode PATCH_INFO into its disk representation.
2358 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
2362 switch (patch_info->type) {
2363 case MONO_PATCH_INFO_NONE:
2365 case MONO_PATCH_INFO_IMAGE:
2366 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
2368 case MONO_PATCH_INFO_METHOD_REL:
2369 encode_value ((gint)patch_info->data.offset, p, &p);
2371 case MONO_PATCH_INFO_SWITCH: {
2372 gpointer *table = (gpointer *)patch_info->data.table->table;
2375 encode_value (patch_info->data.table->table_size, p, &p);
2376 for (k = 0; k < patch_info->data.table->table_size; k++)
2377 encode_value ((int)(gssize)table [k], p, &p);
2380 case MONO_PATCH_INFO_METHODCONST:
2381 case MONO_PATCH_INFO_METHOD:
2382 case MONO_PATCH_INFO_METHOD_JUMP:
2383 case MONO_PATCH_INFO_ICALL_ADDR:
2384 case MONO_PATCH_INFO_METHOD_RGCTX:
2385 encode_method_ref (acfg, patch_info->data.method, p, &p);
2387 case MONO_PATCH_INFO_INTERNAL_METHOD:
2388 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2389 guint32 len = strlen (patch_info->data.name);
2391 encode_value (len, p, &p);
2393 memcpy (p, patch_info->data.name, len);
2398 case MONO_PATCH_INFO_LDSTR: {
2399 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
2400 guint32 token = patch_info->data.token->token;
2401 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
2402 encode_value (image_index, p, &p);
2403 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
2406 case MONO_PATCH_INFO_RVA:
2407 case MONO_PATCH_INFO_DECLSEC:
2408 case MONO_PATCH_INFO_LDTOKEN:
2409 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2410 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
2411 encode_value (patch_info->data.token->token, p, &p);
2413 case MONO_PATCH_INFO_EXC_NAME: {
2414 MonoClass *ex_class;
2417 mono_class_from_name (mono_defaults.exception_class->image,
2418 "System", patch_info->data.target);
2419 g_assert (ex_class);
2420 encode_klass_ref (acfg, ex_class, p, &p);
2423 case MONO_PATCH_INFO_R4:
2424 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2426 case MONO_PATCH_INFO_R8:
2427 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2428 encode_value (*(((guint32 *)patch_info->data.target) + 1), p, &p);
2430 case MONO_PATCH_INFO_VTABLE:
2431 case MONO_PATCH_INFO_CLASS:
2432 case MONO_PATCH_INFO_IID:
2433 case MONO_PATCH_INFO_ADJUSTED_IID:
2434 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2436 case MONO_PATCH_INFO_CLASS_INIT:
2437 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2438 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2440 case MONO_PATCH_INFO_FIELD:
2441 case MONO_PATCH_INFO_SFLDA:
2442 encode_field_info (acfg, patch_info->data.field, p, &p);
2444 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2446 case MONO_PATCH_INFO_WRAPPER:
2447 encode_value (patch_info->data.method->wrapper_type, p, &p);
2449 switch (patch_info->data.method->wrapper_type) {
2450 case MONO_WRAPPER_REMOTING_INVOKE:
2451 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
2452 case MONO_WRAPPER_XDOMAIN_INVOKE: {
2454 guint32 image_index;
2457 m = mono_marshal_method_from_wrapper (patch_info->data.method);
2458 image_index = get_image_index (acfg, m->klass->image);
2460 g_assert (image_index < 256);
2461 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
2463 encode_value ((image_index << 24) + (mono_metadata_token_index (token)), p, &p);
2466 case MONO_WRAPPER_PROXY_ISINST:
2467 case MONO_WRAPPER_LDFLD:
2468 case MONO_WRAPPER_LDFLDA:
2469 case MONO_WRAPPER_STFLD:
2470 case MONO_WRAPPER_ISINST: {
2471 MonoClass *proxy_class = (MonoClass*)mono_marshal_method_from_wrapper (patch_info->data.method);
2472 encode_klass_ref (acfg, proxy_class, p, &p);
2475 case MONO_WRAPPER_LDFLD_REMOTE:
2476 case MONO_WRAPPER_STFLD_REMOTE:
2478 case MONO_WRAPPER_ALLOC: {
2479 int alloc_type = mono_gc_get_managed_allocator_type (patch_info->data.method);
2480 g_assert (alloc_type != -1);
2481 encode_value (alloc_type, p, &p);
2484 case MONO_WRAPPER_STELEMREF:
2486 case MONO_WRAPPER_STATIC_RGCTX_INVOKE: {
2489 m = mono_marshal_method_from_wrapper (patch_info->data.method);
2491 encode_method_ref (acfg, m, p, &p);
2495 g_assert_not_reached ();
2498 case MONO_PATCH_INFO_RGCTX_FETCH: {
2499 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
2501 encode_method_ref (acfg, entry->method, p, &p);
2502 encode_value (entry->in_mrgctx, p, &p);
2503 encode_value (entry->info_type, p, &p);
2504 encode_value (entry->data->type, p, &p);
2505 encode_patch (acfg, entry->data, p, &p);
2508 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2511 g_warning ("unable to handle jump info %d", patch_info->type);
2512 g_assert_not_reached ();
2519 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, int first_got_offset, guint8 *buf, guint8 **endbuf)
2522 guint32 last_offset, j, pindex;
2523 MonoJumpInfo *patch_info;
2525 encode_value (n_patches, p, &p);
2528 encode_value (first_got_offset, p, &p);
2530 /* First encode the type+position table */
2533 for (pindex = 0; pindex < patches->len; ++pindex) {
2535 patch_info = g_ptr_array_index (patches, pindex);
2537 if (patch_info->type == MONO_PATCH_INFO_NONE)
2542 //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
2543 offset = patch_info->ip.i - last_offset;
2544 last_offset = patch_info->ip.i;
2546 /* Only the type is needed */
2547 *p = patch_info->type;
2551 /* Then encode the other info */
2552 for (pindex = 0; pindex < patches->len; ++pindex) {
2553 patch_info = g_ptr_array_index (patches, pindex);
2555 if (is_shared_got_patch (patch_info)) {
2556 guint32 offset = get_got_offset (acfg, patch_info);
2557 encode_value (offset, p, &p);
2559 encode_patch (acfg, patch_info, p, &p);
2567 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
2571 int pindex, buf_size, n_patches;
2575 MonoJumpInfo *patch_info;
2576 MonoMethodHeader *header;
2577 guint32 method_index;
2579 guint32 first_got_offset;
2581 method = cfg->orig_method;
2582 code = cfg->native_code;
2583 header = mono_method_get_header (method);
2585 method_index = get_method_index (acfg, method);
2587 /* Make the labels local */
2588 symbol = g_strdup_printf (".Lm_%x_p", method_index);
2590 /* Sort relocations */
2591 patches = g_ptr_array_new ();
2592 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
2593 g_ptr_array_add (patches, patch_info);
2594 g_ptr_array_sort (patches, compare_patches);
2596 first_got_offset = acfg->method_got_offsets [method_index];
2598 /**********************/
2599 /* Encode method info */
2600 /**********************/
2602 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
2603 p = buf = g_malloc (buf_size);
2605 if (mono_class_get_cctor (method->klass))
2606 encode_klass_ref (acfg, method->klass, p, &p);
2608 /* Not needed when loading the method */
2609 encode_value (0, p, &p);
2612 if (cfg->opt & MONO_OPT_SHARED) {
2613 encode_value (g_list_length (cfg->ldstr_list), p, &p);
2614 for (l = cfg->ldstr_list; l; l = l->next) {
2615 encode_value ((long)l->data, p, &p);
2619 /* Used only in shared mode */
2620 g_assert (!cfg->ldstr_list);
2623 for (pindex = 0; pindex < patches->len; ++pindex) {
2624 patch_info = g_ptr_array_index (patches, pindex);
2626 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
2627 (patch_info->type == MONO_PATCH_INFO_NONE)) {
2628 patch_info->type = MONO_PATCH_INFO_NONE;
2633 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
2634 /* Stored in a GOT slot initialized at module load time */
2635 patch_info->type = MONO_PATCH_INFO_NONE;
2639 if (is_plt_patch (patch_info)) {
2640 /* Calls are made through the PLT */
2641 patch_info->type = MONO_PATCH_INFO_NONE;
2649 g_assert (cfg->has_got_slots);
2651 encode_patch_list (acfg, patches, n_patches, first_got_offset, p, &p);
2653 acfg->stats.info_size += p - buf;
2655 /* Emit method info */
2657 emit_label (acfg, symbol);
2660 g_assert (p - buf < buf_size);
2661 emit_bytes (acfg, buf, p - buf);
2666 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
2669 int k, buf_size, method_index;
2670 guint32 debug_info_size;
2673 MonoMethodHeader *header;
2674 guint8 *p, *buf, *debug_info;
2675 MonoJitInfo *jinfo = cfg->jit_info;
2677 method = cfg->orig_method;
2678 code = cfg->native_code;
2679 header = mono_method_get_header (method);
2681 method_index = get_method_index (acfg, method);
2683 /* Make the labels local */
2684 symbol = g_strdup_printf (".Le_%x_p", method_index);
2686 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
2688 buf_size = header->num_clauses * 256 + debug_info_size + 128;
2689 p = buf = g_malloc (buf_size);
2691 encode_value (cfg->code_len, p, &p);
2692 encode_value (cfg->used_int_regs, p, &p);
2693 encode_value (jinfo->has_generic_jit_info, p, &p);
2695 /* Exception table */
2696 if (header->num_clauses) {
2697 for (k = 0; k < header->num_clauses; ++k) {
2698 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
2700 encode_value (ei->exvar_offset, p, &p);
2702 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
2703 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
2705 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
2706 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
2707 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
2711 if (jinfo->has_generic_jit_info) {
2712 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
2714 encode_value (gi->has_this ? 1 : 0, p, &p);
2715 encode_value (gi->this_reg, p, &p);
2716 encode_value (gi->this_offset, p, &p);
2719 * Need to encode jinfo->method too, since it is not equal to 'method'
2720 * when using generic sharing.
2722 encode_method_ref (acfg, jinfo->method, p, &p);
2725 g_assert (debug_info_size < buf_size);
2727 encode_value (debug_info_size, p, &p);
2728 if (debug_info_size) {
2729 memcpy (p, debug_info, debug_info_size);
2730 p += debug_info_size;
2731 g_free (debug_info);
2734 acfg->stats.ex_info_size += p - buf;
2738 emit_label (acfg, symbol);
2741 g_assert (p - buf < buf_size);
2742 emit_bytes (acfg, buf, p - buf);
2747 emit_klass_info (MonoAotCompile *acfg, guint32 token)
2749 MonoClass *klass = mono_class_get (acfg->image, token);
2753 gboolean no_special_static, cant_encode;
2755 buf_size = 10240 + (klass->vtable_size * 16);
2756 p = buf = g_malloc (buf_size);
2760 mono_class_init (klass);
2762 mono_class_setup_vtable (klass);
2765 * Emit all the information which is required for creating vtables so
2766 * the runtime does not need to create the MonoMethod structures which
2767 * take up a lot of space.
2770 no_special_static = !mono_class_has_special_static_fields (klass);
2772 /* Check whenever we have enough info to encode the vtable */
2773 cant_encode = FALSE;
2774 for (i = 0; i < klass->vtable_size; ++i) {
2775 MonoMethod *cm = klass->vtable [i];
2777 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
2781 if (klass->generic_container || cant_encode) {
2782 encode_value (-1, p, &p);
2784 encode_value (klass->vtable_size, p, &p);
2785 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);
2786 if (klass->has_cctor)
2787 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
2788 if (klass->has_finalize)
2789 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
2791 encode_value (klass->instance_size, p, &p);
2792 encode_value (mono_class_data_size (klass), p, &p);
2793 encode_value (klass->packing_size, p, &p);
2794 encode_value (klass->min_align, p, &p);
2796 for (i = 0; i < klass->vtable_size; ++i) {
2797 MonoMethod *cm = klass->vtable [i];
2800 encode_method_ref (acfg, cm, p, &p);
2802 encode_value (0, p, &p);
2806 acfg->stats.class_info_size += p - buf;
2809 symbol = g_strdup_printf (".LK_I_%x", token - MONO_TOKEN_TYPE_DEF - 1);
2810 emit_label (acfg, symbol);
2813 g_assert (p - buf < buf_size);
2814 emit_bytes (acfg, buf, p - buf);
2819 * Calls made from AOTed code are routed through a table of jumps similar to the
2820 * ELF PLT (Program Linkage Table). The differences are the following:
2821 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
2822 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
2823 * jumps. This means the jumps need to be patched when the address of the callee is
2824 * known. Initially the PLT entries jump to code which transfers control to the
2825 * AOT runtime through the first PLT entry.
2828 emit_plt (MonoAotCompile *acfg)
2833 guint32 *plt_info_offsets;
2836 * Encode info need to resolve PLT entries.
2838 buf_size = acfg->plt_offset * 128;
2839 p = buf = g_malloc (buf_size);
2841 plt_info_offsets = g_new0 (guint32, acfg->plt_offset);
2843 for (i = 1; i < acfg->plt_offset; ++i) {
2844 MonoJumpInfo *patch_info = g_hash_table_lookup (acfg->plt_offset_to_patch, GUINT_TO_POINTER (i));
2846 plt_info_offsets [i] = p - buf;
2847 encode_value (patch_info->type, p, &p);
2848 encode_patch (acfg, patch_info, p, &p);
2852 symbol = g_strdup_printf ("plt");
2854 /* This section will be made read-write by the AOT loader */
2855 emit_section_change (acfg, ".text", 0);
2856 emit_global (acfg, symbol, TRUE);
2857 emit_alignment (acfg, PAGESIZE);
2858 emit_label (acfg, symbol);
2861 #if defined(USE_BIN_WRITER) && defined(__arm__)
2863 g_assert_not_reached ();
2866 for (i = 0; i < acfg->plt_offset; ++i) {
2869 label = g_strdup_printf (".Lp_%d", i);
2870 emit_label (acfg, label);
2874 * The first plt entry is used to transfer code to the AOT loader.
2877 #if defined(__i386__)
2879 /* It is filled up during loading by the AOT loader. */
2880 emit_zero_bytes (acfg, 16);
2882 /* Need to make sure this is 9 bytes long */
2883 emit_byte (acfg, '\xe9');
2884 emit_symbol_diff (acfg, "plt", ".", -4);
2885 emit_int32 (acfg, plt_info_offsets [i]);
2887 #elif defined(__x86_64__)
2889 * We can't emit jumps because they are 32 bits only so they can't be patched.
2890 * So we emit a jump table instead whose entries are patched by the AOT loader to
2891 * point to .Lpd entries. ELF stores these in the GOT too, but we don't, since
2892 * methods with GOT entries can't be called directly.
2893 * We also emit the default PLT code here since the PLT code will not be patched.
2894 * An x86_64 plt entry is 10 bytes long, init_plt () depends on this.
2896 /* jmpq *<offset>(%rip) */
2897 emit_byte (acfg, '\xff');
2898 emit_byte (acfg, '\x25');
2899 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)) -4);
2900 /* Used by mono_aot_get_plt_info_offset */
2901 emit_int32 (acfg, plt_info_offsets [i]);
2902 #elif defined(__arm__)
2904 * - optimize OP_AOTCONST implementation
2905 * - optimize the PLT entries
2906 * - optimize SWITCH AOT implementation
2907 * - implement IMT support
2909 emit_unset_mode (acfg);
2910 fprintf (acfg->fp, "\tldr ip, [pc, #4]\n");
2911 fprintf (acfg->fp, "\tadd ip, pc, ip\n");
2912 fprintf (acfg->fp, "\tldr pc, [ip, #0]\n");
2913 emit_symbol_diff (acfg, "plt_jump_table", ".", 0);
2914 /* Used by mono_aot_get_plt_info_offset */
2915 #if defined(__MACH__)
2916 fprintf (acfg->fp, "\n\t.long %d\n", plt_info_offsets [i]);
2918 fprintf (acfg->fp, "\n\t.word %d\n", plt_info_offsets [i]);
2922 g_assert_not_reached ();
2926 g_free (plt_info_offsets);
2928 symbol = g_strdup_printf ("plt_end");
2929 emit_global (acfg, symbol, TRUE);
2930 emit_label (acfg, symbol);
2934 symbol = g_strdup_printf ("plt_info");
2935 emit_global (acfg, symbol, FALSE);
2936 emit_label (acfg, symbol);
2939 g_assert (p - buf < buf_size);
2940 emit_bytes (acfg, buf, p - buf);
2943 symbol = g_strdup_printf ("plt_jump_table_addr");
2944 emit_section_change (acfg, ".data", 0);
2945 emit_global (acfg, symbol, FALSE);
2946 emit_alignment (acfg, 8);
2947 emit_label (acfg, symbol);
2948 emit_pointer (acfg, "plt_jump_table");
2951 symbol = g_strdup_printf ("plt_jump_table_size");
2952 emit_section_change (acfg, ".data", 0);
2953 emit_global (acfg, symbol, FALSE);
2954 emit_alignment (acfg, 8);
2955 emit_label (acfg, symbol);
2956 emit_symbol_diff (acfg, "plt_jump_table_end", "plt_jump_table", 0);
2959 /* Don't make this a global so accesses don't need relocations */
2960 symbol = g_strdup_printf ("plt_jump_table");
2961 emit_section_change (acfg, ".bss", 0);
2962 emit_label (acfg, symbol);
2965 #if defined(__x86_64__) || defined(__arm__)
2966 emit_zero_bytes (acfg, (int)(acfg->plt_offset * sizeof (gpointer)));
2969 symbol = g_strdup_printf ("plt_jump_table_end");
2970 emit_label (acfg, symbol);
2974 static G_GNUC_UNUSED void
2975 emit_named_code (MonoAotCompile *acfg, const char *name, guint8 *code,
2976 guint32 code_size, int got_offset, MonoJumpInfo *ji)
2980 MonoJumpInfo *patch_info;
2986 symbol = g_strdup_printf ("%s", name);
2988 emit_section_change (acfg, ".text", 0);
2989 emit_global (acfg, symbol, TRUE);
2990 emit_alignment (acfg, 16);
2991 emit_label (acfg, symbol);
2995 * The code should access everything through the GOT, so we pass
2998 emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE);
3002 /* Sort relocations */
3003 patches = g_ptr_array_new ();
3004 for (patch_info = ji; patch_info; patch_info = patch_info->next)
3005 g_ptr_array_add (patches, patch_info);
3006 g_ptr_array_sort (patches, compare_patches);
3008 buf_size = patches->len * 128 + 128;
3009 buf = g_malloc (buf_size);
3012 encode_patch_list (acfg, patches, patches->len, got_offset, p, &p);
3013 g_assert (p - buf < buf_size);
3015 symbol = g_strdup_printf ("%s_p", name);
3017 emit_section_change (acfg, ".text", 0);
3018 emit_global (acfg, symbol, FALSE);
3019 emit_label (acfg, symbol);
3022 emit_bytes (acfg, buf, p - buf);
3026 * When running in aot-only mode, we can't create trampolines at runtime, so we create
3027 * a few, and save them in the AOT file. Normal trampolines embed their argument as a
3028 * literal inside the trampoline code, we can't do that here, so instead we embed an offset
3029 * which needs to be added to the trampoline address to get the address of the GOT slot
3030 * which contains the argument value.
3031 * The generated trampolines jump to the generic trampolines using another GOT slot, which
3032 * will be setup by the AOT loader to point to the generic trampoline code of the given
3036 emit_trampolines (MonoAotCompile *acfg)
3040 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3047 if (!acfg->aot_opts.full_aot)
3050 g_assert (acfg->image->assembly);
3052 /* Currently, we only emit most trampolines into the mscorlib AOT image. */
3053 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
3054 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3056 * Emit the generic trampolines.
3058 * We could save some code by treating the generic trampolines as a wrapper
3059 * method, but that approach has its own complexities, so we choose the simpler
3062 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
3063 code = mono_arch_create_trampoline_code_full (tramp_type, &code_size, &ji, TRUE);
3065 /* Emit trampoline code */
3067 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
3069 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3074 code = mono_arch_get_nullified_class_init_trampoline (&code_size);
3075 emit_named_code (acfg, "nullified_class_init_trampoline", code, code_size, acfg->got_offset, NULL);
3077 /* Emit the exception related code pieces */
3078 code = mono_arch_get_restore_context_full (&code_size, &ji, TRUE);
3079 emit_named_code (acfg, "restore_context", code, code_size, acfg->got_offset, ji);
3080 code = mono_arch_get_call_filter_full (&code_size, &ji, TRUE);
3081 emit_named_code (acfg, "call_filter", code, code_size, acfg->got_offset, ji);
3082 code = mono_arch_get_throw_exception_full (&code_size, &ji, TRUE);
3083 emit_named_code (acfg, "throw_exception", code, code_size, acfg->got_offset, ji);
3084 code = mono_arch_get_rethrow_exception_full (&code_size, &ji, TRUE);
3085 emit_named_code (acfg, "rethrow_exception", code, code_size, acfg->got_offset, ji);
3086 code = mono_arch_get_throw_exception_by_name_full (&code_size, &ji, TRUE);
3087 emit_named_code (acfg, "throw_exception_by_name", code, code_size, acfg->got_offset, ji);
3088 code = mono_arch_get_throw_corlib_exception_full (&code_size, &ji, TRUE);
3089 emit_named_code (acfg, "throw_corlib_exception", code, code_size, acfg->got_offset, ji);
3093 * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
3097 /* Reserve some entries at the end of the GOT for our use */
3098 acfg->num_trampoline_got_entries = acfg->num_aot_trampolines * 2;
3100 symbol = g_strdup_printf ("trampolines");
3102 emit_section_change (acfg, ".text", 0);
3103 emit_global (acfg, symbol, TRUE);
3104 emit_alignment (acfg, 16);
3105 emit_label (acfg, symbol);
3107 for (i = 0; i < acfg->num_aot_trampolines; ++i) {
3108 offset = acfg->got_offset + (i * 2);
3111 * The trampolines created here are variations of the specific
3112 * trampolines created in mono_arch_create_specific_trampoline (). The
3114 * - the generic trampoline address is taken from a got slot.
3115 * - the offset of the got slot where the trampoline argument is stored
3116 * is embedded in the instruction stream, and the generic trampoline
3117 * can load the argument by loading the offset, adding it to the
3118 * address of the trampoline to get the address of the got slot, and
3119 * loading the argument from the there.
3121 #if defined(__x86_64__)
3122 /* This should be exactly 16 bytes long */
3123 /* It should work together with the generic trampoline code in tramp-amd64.c */
3124 /* call *<offset>(%rip) */
3125 emit_byte (acfg, '\x41');
3126 emit_byte (acfg, '\xff');
3127 emit_byte (acfg, '\x15');
3128 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4);
3129 /* This should be relative to the start of the trampoline */
3130 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 19);
3131 emit_zero_bytes (acfg, 5);
3132 #elif defined(__arm__)
3136 /* Generate the trampoline code */
3137 /* This should be exactly 28 bytes long */
3140 ARM_PUSH (code, 0x5fff);
3141 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
3142 /* Load the value from the GOT */
3143 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
3145 ARM_MOV_REG_REG (code, ARMREG_LR, ARMREG_PC);
3146 ARM_MOV_REG_REG (code, ARMREG_PC, ARMREG_R1);
3148 g_assert (code - buf == 20);
3151 emit_bytes (acfg, buf, code - buf);
3152 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 8);
3153 emit_symbol_diff (acfg, "got", ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
3156 g_assert_not_reached ();
3161 /* Unbox trampolines */
3163 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3165 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3169 method = mono_get_method (acfg->image, token, NULL);
3171 cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
3172 if (!cfg || !cfg->orig_method->klass->valuetype || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL))
3175 symbol = g_strdup_printf ("unbox_trampoline_%d", i);
3177 emit_section_change (acfg, ".text", 0);
3178 emit_global (acfg, symbol, TRUE);
3179 emit_label (acfg, symbol);
3181 call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, cfg->orig_method));
3183 #if defined(__x86_64__)
3188 this_reg = mono_arch_get_this_arg_reg (mono_method_signature (cfg->orig_method), cfg->generic_sharing_context, NULL);
3190 amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
3192 emit_bytes (acfg, buf, code - buf);
3194 emit_byte (acfg, '\xe9');
3195 emit_symbol_diff (acfg, call_target, ".", -4);
3197 #elif defined(__arm__)
3204 if (MONO_TYPE_ISSTRUCT (mono_method_signature (cfg->orig_method)->ret))
3207 ARM_ADD_REG_IMM8 (code, this_pos, this_pos, sizeof (MonoObject));
3209 emit_bytes (acfg, buf, code - buf);
3210 /* jump to method */
3211 #if defined(USE_BIN_WRITER)
3213 g_assert_not_reached ();
3215 fprintf (acfg->fp, "\n\tb %s\n", call_target);
3218 g_assert_not_reached ();
3222 symbol = g_strdup_printf ("trampolines_info");
3224 emit_section_change (acfg, ".text", 0);
3225 emit_global (acfg, symbol, TRUE);
3226 emit_alignment (acfg, PAGESIZE);
3227 emit_label (acfg, symbol);
3229 emit_int32 (acfg, acfg->num_aot_trampolines);
3230 emit_int32 (acfg, acfg->got_offset);
3234 str_begins_with (const char *str1, const char *str2)
3236 int len = strlen (str2);
3237 return strncmp (str1, str2, len) == 0;
3241 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
3243 gchar **args, **ptr;
3245 memset (opts, 0, sizeof (*opts));
3247 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
3248 for (ptr = args; ptr && *ptr; ptr ++) {
3249 const char *arg = *ptr;
3251 if (str_begins_with (arg, "outfile=")) {
3252 opts->outfile = g_strdup (arg + strlen ("outfile="));
3253 } else if (str_begins_with (arg, "save-temps")) {
3254 opts->save_temps = TRUE;
3255 } else if (str_begins_with (arg, "keep-temps")) {
3256 opts->save_temps = TRUE;
3257 } else if (str_begins_with (arg, "write-symbols")) {
3258 opts->write_symbols = TRUE;
3259 } else if (str_begins_with (arg, "metadata-only")) {
3260 opts->metadata_only = TRUE;
3261 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
3262 opts->bind_to_runtime_version = TRUE;
3263 } else if (str_begins_with (arg, "full")) {
3264 opts->full_aot = TRUE;
3266 * The no-dlsym option is only useful on the iphone, and even there,
3267 * do to other limitations of the dynamic linker, it doesn't seem to
3268 * work. So disable it for now so we don't have to support it.
3271 } else if (str_begins_with (arg, "no-dlsym")) {
3272 opts->no_dlsym = TRUE;
3274 } else if (str_begins_with (arg, "static")) {
3275 opts->static_link = TRUE;
3276 opts->no_dlsym = TRUE;
3278 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
3287 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
3289 MonoMethod *method = (MonoMethod*)key;
3290 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
3291 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
3292 MonoAotCompile *acfg = user_data;
3294 new_ji->image = ji->image;
3295 new_ji->token = ji->token;
3296 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
3300 compile_method (MonoAotCompile *acfg, MonoMethod *method)
3303 MonoJumpInfo *patch_info;
3307 if (acfg->aot_opts.metadata_only)
3310 index = get_method_index (acfg, method);
3312 /* fixme: maybe we can also precompile wrapper methods */
3313 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3314 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3315 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
3316 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
3320 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
3323 acfg->stats.mcount++;
3325 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
3327 * FIXME: Enabling this causes virtual-sync.exe to fail, since the trampoline
3328 * code can't determine that it needs to insert a sync wrapper in the AOT case.
3333 //acfg->opts &= ~MONO_OPT_GSHARED;
3335 // FIXME: GSHARED is on by default
3337 if (TRUE || !(acfg->opts & MONO_OPT_GSHARED)) {
3338 if (method->is_generic || method->klass->generic_container) {
3339 acfg->stats.genericcount ++;
3345 if (acfg->aot_opts.full_aot)
3346 mono_use_imt = FALSE;
3349 * Since these methods are the only ones which are compiled with
3350 * AOT support, and they are not used by runtime startup/shutdown code,
3351 * the runtime will not see AOT methods during AOT compilation,so it
3352 * does not need to support them by creating a fake GOT etc.
3354 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
3355 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3356 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3357 acfg->stats.genericcount ++;
3360 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
3361 /* Let the exception happen at runtime */
3365 if (cfg->disable_aot) {
3366 //printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
3367 acfg->stats.ocount++;
3368 mono_destroy_compile (cfg);
3372 /* Nullify patches which need no aot processing */
3373 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3374 switch (patch_info->type) {
3375 case MONO_PATCH_INFO_LABEL:
3376 case MONO_PATCH_INFO_BB:
3377 patch_info->type = MONO_PATCH_INFO_NONE;
3384 /* Collect method->token associations from the cfg */
3385 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
3388 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3389 switch (patch_info->type) {
3390 case MONO_PATCH_INFO_ABS:
3391 /* unable to handle this */
3392 //printf ("Skip (abs addr): %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
3401 acfg->stats.abscount++;
3402 mono_destroy_compile (cfg);
3406 /* Convert method patches referring to wrapper methods to MONO_PATCH_INFO_WRAPPER */
3408 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3409 if ((patch_info->type == MONO_PATCH_INFO_METHODCONST) || (patch_info->type == MONO_PATCH_INFO_METHOD)) {
3410 switch (patch_info->data.method->wrapper_type) {
3411 case MONO_WRAPPER_NONE:
3413 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
3414 case MONO_WRAPPER_XDOMAIN_INVOKE:
3415 case MONO_WRAPPER_STFLD:
3416 case MONO_WRAPPER_LDFLD:
3417 case MONO_WRAPPER_LDFLDA:
3418 case MONO_WRAPPER_LDFLD_REMOTE:
3419 case MONO_WRAPPER_STFLD_REMOTE:
3420 case MONO_WRAPPER_STELEMREF:
3421 case MONO_WRAPPER_ISINST:
3422 case MONO_WRAPPER_PROXY_ISINST:
3423 case MONO_WRAPPER_ALLOC:
3424 case MONO_WRAPPER_REMOTING_INVOKE:
3425 case MONO_WRAPPER_STATIC_RGCTX_INVOKE:
3426 patch_info->type = MONO_PATCH_INFO_WRAPPER;
3429 /* unable to handle this */
3430 //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));
3434 } else if (patch_info->type == MONO_PATCH_INFO_RGCTX_FETCH) {
3435 MonoJumpInfo *child = patch_info->data.rgctx_entry->data;
3437 if (child->type == MONO_PATCH_INFO_METHODCONST && child->data.method->wrapper_type == MONO_WRAPPER_STATIC_RGCTX_INVOKE)
3438 child->type = MONO_PATCH_INFO_WRAPPER;
3443 acfg->stats.wrappercount++;
3444 mono_destroy_compile (cfg);
3449 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3450 switch (patch_info->type) {
3451 case MONO_PATCH_INFO_METHOD:
3452 case MONO_PATCH_INFO_METHODCONST:
3453 if (!patch_info->data.method->token) {
3454 /* The method is part of a constructed type like Int[,].Set (). */
3455 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method))
3458 if (patch_info->data.method->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method)) {
3460 * encode_method_ref () can handle this method if it is not generic
3461 * and its class can be encoded.
3463 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method->klass) || mono_method_get_context (patch_info->data.method)->method_inst) {
3464 /* FIXME: Can't encode these */
3465 //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));
3470 case MONO_PATCH_INFO_VTABLE:
3471 case MONO_PATCH_INFO_CLASS_INIT:
3472 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3473 case MONO_PATCH_INFO_CLASS:
3474 case MONO_PATCH_INFO_IID:
3475 case MONO_PATCH_INFO_ADJUSTED_IID:
3476 if (!patch_info->data.klass->type_token)
3477 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))
3486 acfg->stats.ocount++;
3487 mono_destroy_compile (cfg);
3491 /* Determine whenever the method has GOT slots */
3492 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3493 switch (patch_info->type) {
3494 case MONO_PATCH_INFO_GOT_OFFSET:
3495 case MONO_PATCH_INFO_NONE:
3497 case MONO_PATCH_INFO_IMAGE:
3498 /* The assembly is stored in GOT slot 0 */
3499 if (patch_info->data.image != acfg->image)
3500 cfg->has_got_slots = TRUE;
3503 if (!is_plt_patch (patch_info))
3504 cfg->has_got_slots = TRUE;
3509 if (!cfg->has_got_slots)
3510 acfg->stats.methods_without_got_slots ++;
3512 /* Make a copy of the patch info which is in the mempool */
3514 MonoJumpInfo *patches = NULL, *patches_end = NULL;
3516 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3517 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3520 patches = new_patch_info;
3522 patches_end->next = new_patch_info;
3523 patches_end = new_patch_info;
3525 cfg->patch_info = patches;
3528 /* Free some fields used by cfg to conserve memory */
3529 mono_mempool_destroy (cfg->mempool);
3530 cfg->mempool = NULL;
3531 g_free (cfg->varinfo);
3532 cfg->varinfo = NULL;
3536 mono_regstate_free (cfg->rs);
3540 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
3542 acfg->cfgs [index] = cfg;
3544 g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
3546 acfg->stats.ccount++;
3550 load_profile_files (MonoAotCompile *acfg)
3554 int file_index, res, method_index, i;
3561 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);
3563 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR)) {
3568 infile = fopen (tmp, "r");
3571 printf ("Using profile data file '%s'\n", tmp);
3576 res = fscanf (infile, "%32s\n", ver);
3577 if ((res != 1) || strcmp (ver, "#VER:1") != 0) {
3578 printf ("Profile file has wrong version or invalid.\n");
3584 res = fscanf (infile, "%d\n", &token);
3588 method_index = mono_metadata_token_index (token) - 1;
3590 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index)))
3591 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
3596 /* Add missing methods */
3598 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3599 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
3600 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (i));
3602 unordered = g_list_reverse (unordered);
3603 if (acfg->method_order)
3604 g_list_last (acfg->method_order)->next = unordered;
3606 acfg->method_order = unordered;
3612 * Collect all patches which have shared GOT entries and alloc entries for them. The
3613 * rest will get entries allocated during emit_code ().
3616 alloc_got_slots (MonoAotCompile *acfg)
3622 /* Slot 0 is reserved for the address of the current assembly */
3623 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
3624 ji->type = MONO_PATCH_INFO_IMAGE;
3625 ji->data.image = acfg->image;
3627 get_shared_got_offset (acfg, ji);
3629 for (l = acfg->method_order; l != NULL; l = l->next) {
3630 i = GPOINTER_TO_UINT (l->data);
3632 if (acfg->cfgs [i]) {
3633 MonoCompile *cfg = acfg->cfgs [i];
3635 for (ji = cfg->patch_info; ji; ji = ji->next) {
3636 if (is_shared_got_patch (ji))
3637 get_shared_got_offset (acfg, ji);
3644 emit_code (MonoAotCompile *acfg)
3650 symbol = g_strdup_printf ("methods");
3651 emit_section_change (acfg, ".text", 0);
3652 emit_global (acfg, symbol, TRUE);
3653 emit_alignment (acfg, 8);
3654 emit_label (acfg, symbol);
3657 for (l = acfg->method_order; l != NULL; l = l->next) {
3658 i = GPOINTER_TO_UINT (l->data);
3661 emit_method_code (acfg, acfg->cfgs [i]);
3664 symbol = g_strdup_printf ("methods_end");
3665 emit_section_change (acfg, ".text", 0);
3666 emit_global (acfg, symbol, FALSE);
3667 emit_alignment (acfg, 8);
3668 emit_label (acfg, symbol);
3671 symbol = g_strdup_printf ("method_offsets");
3672 emit_section_change (acfg, ".text", 1);
3673 emit_global (acfg, symbol, FALSE);
3674 emit_alignment (acfg, 8);
3675 emit_label (acfg, symbol);
3678 for (i = 0; i < acfg->nmethods; ++i) {
3679 if (acfg->cfgs [i]) {
3680 symbol = g_strdup_printf (".Lm_%x", i);
3681 emit_symbol_diff (acfg, symbol, "methods", 0);
3684 emit_int32 (acfg, 0xffffffff);
3691 emit_info (MonoAotCompile *acfg)
3697 /* Emit method info */
3698 symbol = g_strdup_printf ("method_info");
3699 emit_section_change (acfg, ".text", 1);
3700 emit_global (acfg, symbol, FALSE);
3701 emit_alignment (acfg, 8);
3702 emit_label (acfg, symbol);
3705 /* To reduce size of generated assembly code */
3706 symbol = g_strdup_printf ("mi");
3707 emit_label (acfg, symbol);
3710 for (l = acfg->method_order; l != NULL; l = l->next) {
3711 i = GPOINTER_TO_UINT (l->data);
3714 emit_method_info (acfg, acfg->cfgs [i]);
3717 symbol = g_strdup_printf ("method_info_offsets");
3718 emit_section_change (acfg, ".text", 1);
3719 emit_global (acfg, symbol, FALSE);
3720 emit_alignment (acfg, 8);
3721 emit_label (acfg, symbol);
3724 for (i = 0; i < acfg->nmethods; ++i) {
3725 if (acfg->cfgs [i]) {
3726 symbol = g_strdup_printf (".Lm_%x_p", i);
3727 emit_symbol_diff (acfg, symbol, "mi", 0);
3730 emit_int32 (acfg, 0);
3737 emit_wrapper_info (MonoAotCompile *acfg)
3743 /* Emit method info */
3744 symbol = g_strdup_printf ("wrapper_info");
3745 emit_section_change (acfg, ".text", 1);
3746 emit_global (acfg, symbol, FALSE);
3747 emit_alignment (acfg, 8);
3748 emit_label (acfg, symbol);
3751 if (!acfg->aot_opts.full_aot)
3754 for (i = 0; i < acfg->nmethods; ++i) {
3755 MonoCompile *cfg = acfg->cfgs [i];
3757 if (!cfg || !cfg->orig_method->wrapper_type)
3760 index = get_method_index (acfg, cfg->orig_method);
3762 // FIXME: Optimize disk usage and lookup speed
3763 name = mono_method_full_name (cfg->orig_method, TRUE);
3764 emit_string (acfg, name);
3765 emit_alignment (acfg, 4);
3766 emit_int32 (acfg, index);
3769 emit_byte (acfg, 0);
3775 emit_method_order (MonoAotCompile *acfg)
3781 symbol = g_strdup_printf ("method_order");
3782 emit_section_change (acfg, ".text", 1);
3783 emit_global (acfg, symbol, FALSE);
3784 emit_alignment (acfg, 8);
3785 emit_label (acfg, symbol);
3788 /* First emit an index table */
3791 for (l = acfg->method_order; l != NULL; l = l->next) {
3792 i = GPOINTER_TO_UINT (l->data);
3794 if (acfg->cfgs [i]) {
3795 if ((index % 1024) == 0) {
3796 emit_int32 (acfg, i);
3804 emit_int32 (acfg, 0xffffff);
3806 /* Then emit the whole method order */
3807 for (l = acfg->method_order; l != NULL; l = l->next) {
3808 i = GPOINTER_TO_UINT (l->data);
3810 if (acfg->cfgs [i]) {
3811 emit_int32 (acfg, i);
3816 symbol = g_strdup_printf ("method_order_end");
3817 emit_section_change (acfg, ".text", 1);
3818 emit_global (acfg, symbol, FALSE);
3819 emit_label (acfg, symbol);
3824 emit_exception_info (MonoAotCompile *acfg)
3829 symbol = g_strdup_printf ("ex_info");
3830 emit_section_change (acfg, ".text", 1);
3831 emit_global (acfg, symbol, FALSE);
3832 emit_alignment (acfg, 8);
3833 emit_label (acfg, symbol);
3836 /* To reduce size of generated assembly */
3837 symbol = g_strdup_printf ("ex");
3838 emit_label (acfg, symbol);
3841 for (i = 0; i < acfg->nmethods; ++i) {
3843 emit_exception_debug_info (acfg, acfg->cfgs [i]);
3846 symbol = g_strdup_printf ("ex_info_offsets");
3847 emit_section_change (acfg, ".text", 1);
3848 emit_global (acfg, symbol, FALSE);
3849 emit_alignment (acfg, 8);
3850 emit_label (acfg, symbol);
3853 for (i = 0; i < acfg->nmethods; ++i) {
3854 if (acfg->cfgs [i]) {
3855 symbol = g_strdup_printf (".Le_%x_p", i);
3856 emit_symbol_diff (acfg, symbol, "ex", 0);
3859 emit_int32 (acfg, 0);
3866 emit_class_info (MonoAotCompile *acfg)
3871 symbol = g_strdup_printf ("class_info");
3872 emit_section_change (acfg, ".text", 1);
3873 emit_global (acfg, symbol, FALSE);
3874 emit_alignment (acfg, 8);
3875 emit_label (acfg, symbol);
3878 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
3879 emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
3881 symbol = g_strdup_printf ("class_info_offsets");
3882 emit_section_change (acfg, ".text", 1);
3883 emit_global (acfg, symbol, FALSE);
3884 emit_alignment (acfg, 8);
3885 emit_label (acfg, symbol);
3888 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3889 symbol = g_strdup_printf (".LK_I_%x", i);
3890 emit_symbol_diff (acfg, symbol, "class_info", 0);
3896 typedef struct ClassNameTableEntry {
3897 guint32 token, index;
3898 struct ClassNameTableEntry *next;
3899 } ClassNameTableEntry;
3902 emit_class_name_table (MonoAotCompile *acfg)
3905 guint32 token, hash;
3910 ClassNameTableEntry *entry, *new_entry;
3913 * Construct a chained hash table for mapping class names to typedef tokens.
3915 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
3916 table = g_ptr_array_sized_new (table_size);
3917 for (i = 0; i < table_size; ++i)
3918 g_ptr_array_add (table, NULL);
3919 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3920 token = MONO_TOKEN_TYPE_DEF | (i + 1);
3921 klass = mono_class_get (acfg->image, token);
3922 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
3923 hash = g_str_hash (full_name) % table_size;
3926 /* FIXME: Allocate from the mempool */
3927 new_entry = g_new0 (ClassNameTableEntry, 1);
3928 new_entry->token = token;
3930 entry = g_ptr_array_index (table, hash);
3931 if (entry == NULL) {
3932 new_entry->index = hash;
3933 g_ptr_array_index (table, hash) = new_entry;
3936 entry = entry->next;
3938 entry->next = new_entry;
3939 new_entry->index = table->len;
3940 g_ptr_array_add (table, new_entry);
3944 /* Emit the table */
3945 symbol = g_strdup_printf ("class_name_table");
3946 emit_section_change (acfg, ".text", 0);
3947 emit_global (acfg, symbol, FALSE);
3948 emit_alignment (acfg, 8);
3949 emit_label (acfg, symbol);
3952 /* FIXME: Optimize memory usage */
3953 g_assert (table_size < 65000);
3954 emit_int16 (acfg, table_size);
3955 g_assert (table->len < 65000);
3956 for (i = 0; i < table->len; ++i) {
3957 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
3959 if (entry == NULL) {
3960 emit_int16 (acfg, 0);
3961 emit_int16 (acfg, 0);
3963 emit_int16 (acfg, mono_metadata_token_index (entry->token));
3965 emit_int16 (acfg, entry->next->index);
3967 emit_int16 (acfg, 0);
3973 emit_image_table (MonoAotCompile *acfg)
3979 * The image table is small but referenced in a lot of places.
3980 * So we emit it at once, and reference its elements by an index.
3983 symbol = g_strdup_printf ("mono_image_table");
3984 emit_section_change (acfg, ".text", 1);
3985 emit_global (acfg, symbol, FALSE);
3986 emit_alignment (acfg, 8);
3987 emit_label (acfg, symbol);
3990 emit_int32 (acfg, acfg->image_table->len);
3991 for (i = 0; i < acfg->image_table->len; i++) {
3992 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
3993 MonoAssemblyName *aname = &image->assembly->aname;
3995 /* FIXME: Support multi-module assemblies */
3996 g_assert (image->assembly->image == image);
3998 emit_string (acfg, image->assembly_name);
3999 emit_string (acfg, image->guid);
4000 emit_string (acfg, aname->culture ? aname->culture : "");
4001 emit_string (acfg, (const char*)aname->public_key_token);
4003 emit_alignment (acfg, 8);
4004 emit_int32 (acfg, aname->flags);
4005 emit_int32 (acfg, aname->major);
4006 emit_int32 (acfg, aname->minor);
4007 emit_int32 (acfg, aname->build);
4008 emit_int32 (acfg, aname->revision);
4013 emit_got_info (MonoAotCompile *acfg)
4018 guint32 *got_info_offsets;
4022 * - optimize offsets table.
4023 * - reduce number of exported symbols.
4024 * - emit info for a klass only once.
4025 * - determine when a method uses a GOT slot which is guaranteed to be already
4027 * - clean up and document the code.
4028 * - use String.Empty in class libs.
4031 /* Encode info required to decode shared GOT entries */
4032 buf_size = acfg->shared_patches->len * 64;
4033 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
4034 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->shared_patches->len * sizeof (guint32));
4035 for (i = 0; i < acfg->shared_patches->len; ++i) {
4036 MonoJumpInfo *ji = g_ptr_array_index (acfg->shared_patches, i);
4038 /* No need to encode the patch type */
4039 got_info_offsets [i] = p - buf;
4040 encode_patch (acfg, ji, p, &p);
4043 g_assert (p - buf <= buf_size);
4045 acfg->stats.got_info_size = p - buf;
4047 /* Emit got_info table */
4048 symbol = g_strdup_printf ("got_info");
4049 emit_section_change (acfg, ".text", 1);
4050 emit_global (acfg, symbol, FALSE);
4051 emit_alignment (acfg, 8);
4052 emit_label (acfg, symbol);
4055 emit_bytes (acfg, buf, p - buf);
4057 /* Emit got_info_offsets table */
4058 symbol = g_strdup_printf ("got_info_offsets");
4059 emit_section_change (acfg, ".text", 1);
4060 emit_global (acfg, symbol, FALSE);
4061 emit_alignment (acfg, 8);
4062 emit_label (acfg, symbol);
4065 for (i = 0; i < acfg->shared_patches->len; ++i)
4066 emit_int32 (acfg, got_info_offsets [i]);
4068 acfg->stats.got_info_offsets_size = acfg->shared_patches->len * 4;
4072 emit_got (MonoAotCompile *acfg)
4076 /* Don't make GOT global so accesses to it don't need relocations */
4077 symbol = g_strdup_printf ("got");
4078 emit_section_change (acfg, ".bss", 1);
4079 emit_alignment (acfg, 8);
4080 emit_label (acfg, symbol);
4081 if ((acfg->got_offset + acfg->num_trampoline_got_entries) > 0)
4082 emit_zero_bytes (acfg, (int)((acfg->got_offset + acfg->num_trampoline_got_entries) * sizeof (gpointer)));
4085 symbol = g_strdup_printf ("got_addr");
4086 emit_section_change (acfg, ".data", 1);
4087 emit_global (acfg, symbol, FALSE);
4088 emit_alignment (acfg, 8);
4089 emit_label (acfg, symbol);
4090 emit_pointer (acfg, "got");
4093 symbol = g_strdup_printf ("got_size");
4094 emit_section_change (acfg, ".data", 1);
4095 emit_global (acfg, symbol, FALSE);
4096 emit_alignment (acfg, 8);
4097 emit_label (acfg, symbol);
4098 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
4103 emit_globals (MonoAotCompile *acfg)
4107 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
4109 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
4111 opts_str = g_strdup_printf ("%d", acfg->opts);
4112 emit_string_symbol (acfg, "mono_aot_opt_flags", opts_str);
4115 emit_string_symbol (acfg, "mono_aot_full_aot", acfg->aot_opts.full_aot ? "TRUE" : "FALSE");
4117 if (acfg->aot_opts.bind_to_runtime_version)
4118 emit_string_symbol (acfg, "mono_runtime_version", FULL_VERSION);
4120 emit_string_symbol (acfg, "mono_runtime_version", "");
4123 * Some platforms like the iphone have no working dlsym (). To work around this,
4124 * we create an ELF ctor function which will be invoked by dlopen, and which
4125 * will call a function in the AOT loader to register the symbols used by the
4127 * When static linking, we emit a global which will point to the symbol table.
4129 if (acfg->aot_opts.no_dlsym) {
4133 if (acfg->aot_opts.static_link)
4134 /* Emit a string holding the assembly name */
4135 emit_string_symbol (acfg, "mono_aot_assembly_name", acfg->image->assembly->aname.name);
4137 /* Emit the names */
4138 for (i = 0; i < acfg->globals->len; ++i) {
4139 char *name = g_ptr_array_index (acfg->globals, i);
4141 symbol = g_strdup_printf ("name_%d", i);
4142 emit_section_change (acfg, ".text", 1);
4143 emit_label (acfg, symbol);
4144 emit_string (acfg, name);
4148 /* Emit the globals table */
4149 symbol = g_strdup_printf ("globals");
4150 emit_section_change (acfg, ".data", 0);
4151 /* This is not a global, since it is accessed by the init function */
4152 emit_alignment (acfg, 8);
4153 emit_label (acfg, symbol);
4155 for (i = 0; i < acfg->globals->len; ++i) {
4156 char *name = g_ptr_array_index (acfg->globals, i);
4158 symbol = g_strdup_printf ("name_%d", i);
4159 emit_pointer (acfg, symbol);
4162 symbol = g_strdup_printf ("%s", name);
4163 emit_pointer (acfg, symbol);
4166 /* Null terminate the table */
4167 emit_pointer (acfg, NULL);
4168 emit_pointer (acfg, NULL);
4170 if (acfg->aot_opts.static_link) {
4172 * Emit a global symbol which can be passed by an embedding app to
4173 * mono_aot_register_module ().
4175 symbol = g_strdup_printf ("mono_aot_module_%s_info", acfg->image->assembly->aname.name);
4176 acfg->static_linking_symbol = g_strdup (symbol);
4177 emit_global_inner (acfg, symbol, FALSE);
4178 emit_alignment (acfg, 8);
4179 emit_label (acfg, symbol);
4180 emit_pointer (acfg, "globals");
4182 symbol = g_strdup_printf ("init_%s", acfg->image->assembly->aname.name);
4183 emit_section_change (acfg, ".text", 1);
4184 emit_alignment (acfg, 8);
4185 emit_label (acfg, symbol);
4186 #ifdef USE_BIN_WRITER
4187 g_assert_not_reached ();
4190 fprintf (acfg->fp, "leaq globals(%%rip), %%rdi\n");
4191 fprintf (acfg->fp, "call mono_aot_register_globals@PLT\n");
4192 fprintf (acfg->fp, "ret\n");
4193 fprintf (acfg->fp, ".section .ctors,\"aw\",@progbits\n");
4194 emit_alignment (acfg, 8);
4195 emit_pointer (acfg, symbol);
4196 #elif defined(__arm__)
4198 * Taken from gcc generated code for:
4200 * void foo () { bar (&i); }
4201 * gcc --shared -fPIC -O2
4203 fprintf (acfg->fp, "ldr r3, .L5\n");
4204 fprintf (acfg->fp, "ldr r0, .L5+4\n");
4205 fprintf (acfg->fp, ".LPIC0:\n");
4206 fprintf (acfg->fp, "add r3, pc, r3\n");
4207 fprintf (acfg->fp, "add r0, r3, r0\n");
4208 fprintf (acfg->fp, "b mono_aot_register_globals(PLT)\n");
4210 fprintf (acfg->fp, ".L5:\n");
4211 fprintf (acfg->fp, ".word _GLOBAL_OFFSET_TABLE_-(.LPIC0+8)\n");
4212 fprintf (acfg->fp, ".word globals(GOTOFF)\n");
4214 fprintf (acfg->fp, ".section .init_array,\"aw\",%%init_array\n");
4215 fprintf (acfg->fp, ".align 2\n");
4216 fprintf (acfg->fp, ".word %s(target1)\n", symbol);
4218 g_assert_not_reached ();
4227 acfg_free (MonoAotCompile *acfg)
4231 for (i = 0; i < acfg->nmethods; ++i)
4233 g_free (acfg->cfgs [i]);
4234 g_free (acfg->cfgs);
4235 g_free (acfg->method_got_offsets);
4236 g_free (acfg->static_linking_symbol);
4237 g_ptr_array_free (acfg->methods, TRUE);
4238 g_ptr_array_free (acfg->shared_patches, TRUE);
4239 g_ptr_array_free (acfg->image_table, TRUE);
4240 g_ptr_array_free (acfg->globals, TRUE);
4241 g_hash_table_destroy (acfg->method_indexes);
4242 g_hash_table_destroy (acfg->plt_offset_to_patch);
4243 g_hash_table_destroy (acfg->patch_to_plt_offset);
4244 g_hash_table_destroy (acfg->patch_to_shared_got_offset);
4245 g_hash_table_destroy (acfg->method_to_cfg);
4246 g_hash_table_destroy (acfg->token_info_hash);
4247 g_hash_table_destroy (acfg->image_hash);
4248 mono_mempool_destroy (acfg->mempool);
4253 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
4255 MonoImage *image = ass->image;
4258 MonoAotCompile *acfg;
4260 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
4262 acfg = g_new0 (MonoAotCompile, 1);
4263 acfg->methods = g_ptr_array_new ();
4264 acfg->method_indexes = g_hash_table_new (NULL, NULL);
4265 acfg->plt_offset_to_patch = g_hash_table_new (NULL, NULL);
4266 acfg->patch_to_plt_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4267 acfg->patch_to_shared_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4268 acfg->shared_patches = g_ptr_array_new ();
4269 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
4270 acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, g_free);
4271 acfg->image_hash = g_hash_table_new (NULL, NULL);
4272 acfg->image_table = g_ptr_array_new ();
4273 acfg->globals = g_ptr_array_new ();
4274 acfg->image = image;
4276 acfg->mempool = mono_mempool_new ();
4278 mono_aot_parse_options (aot_options, &acfg->aot_opts);
4280 load_profile_files (acfg);
4284 acfg->num_aot_trampolines = acfg->aot_opts.full_aot ? 10240 : 0;
4286 acfg->method_index = 1;
4288 /* Collect methods */
4289 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
4291 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4293 method = mono_get_method (acfg->image, token, NULL);
4295 if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4296 /* Compile the wrapper instead */
4297 /* We do this here instead of add_wrappers () because it is easy to do it here */
4298 MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
4302 /* Since we add the normal methods first, their index will be equal to their zero based token index */
4303 add_method_with_index (acfg, method, i);
4304 acfg->method_index ++;
4307 if (acfg->aot_opts.full_aot)
4308 add_wrappers (acfg);
4310 acfg->nmethods = acfg->methods->len + 1;
4311 acfg->cfgs = g_new0 (MonoCompile*, acfg->nmethods + 32);
4312 acfg->method_got_offsets = g_new0 (guint32, acfg->nmethods + 32);
4314 /* PLT offset 0 is reserved for the PLT trampoline */
4315 acfg->plt_offset = 1;
4317 /* Compile methods */
4318 for (i = 0; i < acfg->methods->len; ++i) {
4319 compile_method (acfg, g_ptr_array_index (acfg->methods, i));
4322 alloc_got_slots (acfg);
4328 emit_wrapper_info (acfg);
4330 emit_method_order (acfg);
4332 emit_trampolines (acfg);
4334 emit_class_name_table (acfg);
4336 emit_got_info (acfg);
4338 emit_exception_info (acfg);
4340 emit_class_info (acfg);
4344 emit_image_table (acfg);
4348 emit_globals (acfg);
4350 symbol = g_strdup_printf ("mem_end");
4351 emit_section_change (acfg, ".text", 1);
4352 emit_global (acfg, symbol, FALSE);
4353 emit_alignment (acfg, 8);
4354 emit_label (acfg, symbol);
4357 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)));
4359 res = emit_writeout (acfg);
4365 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);
4366 if (acfg->stats.genericcount)
4367 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
4368 if (acfg->stats.abscount)
4369 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
4370 if (acfg->stats.wrappercount)
4371 printf ("%d methods contain wrapper references (%d%%)\n", acfg->stats.wrappercount, acfg->stats.mcount ? (acfg->stats.wrappercount * 100) / acfg->stats.mcount : 100);
4372 if (acfg->stats.lmfcount)
4373 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
4374 if (acfg->stats.ocount)
4375 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
4376 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);
4377 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
4379 printf ("GOT slot distribution:\n");
4380 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
4381 if (acfg->stats.got_slot_types [i])
4382 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
4394 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)