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 * - aot IMT tables, so we don't have two kinds of aot code.
14 * - optimize the trampolines, generate more code in the arch files.
15 * - make things more consistent with how elf works, for example, use ELF
17 * Remaining generics sharing work:
18 * - optimize the size of the data which is encoded.
19 * - optimize the runtime loading of data:
20 * - the trampoline code calls mono_jit_info_table_find () to find the rgctx,
21 * which loads the debugging+exception handling info for the method. This is a
22 * huge waste of time and code, since the rgctx structure is currently empty.
23 * - every shared method has a MonoGenericJitInfo structure which is only really
24 * used for handling catch clauses with open types, not a very common use case.
28 #include <sys/types.h>
35 #ifndef PLATFORM_WIN32
44 #include <limits.h> /* for PAGESIZE */
49 #include <mono/metadata/tabledefs.h>
50 #include <mono/metadata/class.h>
51 #include <mono/metadata/object.h>
52 #include <mono/metadata/tokentype.h>
53 #include <mono/metadata/appdomain.h>
54 #include <mono/metadata/debug-helpers.h>
55 #include <mono/metadata/assembly.h>
56 #include <mono/metadata/metadata-internals.h>
57 #include <mono/metadata/marshal.h>
58 #include <mono/metadata/gc-internal.h>
59 #include <mono/metadata/method-builder.h>
60 #include <mono/utils/mono-logger.h>
61 #include "mono/utils/mono-compiler.h"
69 #define SHARED_EXT ".dll"
70 #elif defined(__ppc__) && defined(__MACH__)
71 #define SHARED_EXT ".dylib"
73 #define SHARED_EXT ".so"
76 #if defined(sparc) || defined(__ppc__) || defined(__powerpc__) || defined(__MACH__)
77 #define AS_STRING_DIRECTIVE ".asciz"
80 #define AS_STRING_DIRECTIVE ".string"
85 // .byte generates 1 byte per expression.
86 // .short generates 2 bytes per expression.
87 // .long generates 4 bytes per expression.
88 // .quad generates 8 bytes per expression.
90 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
91 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
93 typedef struct MonoAotOptions {
96 gboolean write_symbols;
97 gboolean metadata_only;
98 gboolean bind_to_runtime_version;
101 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 g_assert (!acfg->aot_opts.asm_only);
1023 if (acfg->aot_opts.outfile)
1024 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1026 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1028 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1030 unlink (tmp_outfile_name);
1031 file = fopen (tmp_outfile_name, "w");
1034 /* Section headers */
1035 memset (§h, 0, sizeof (secth));
1036 memset (&dynamic, 0, sizeof (dynamic));
1037 memset (&header, 0, sizeof (header));
1039 for (i = 1; i < SECT_NUM; ++i) {
1040 secth [i].sh_name = str_table_add (&sh_str_table, section_names [i]);
1041 secth [i].sh_type = section_type [i];
1042 secth [i].sh_link = section_link [i];
1043 secth [i].sh_addralign = section_align [i];
1044 secth [i].sh_flags = section_flags [i];
1045 secth [i].sh_entsize = section_esize [i];
1047 secth [SECT_DYNSYM].sh_info = 4;
1048 secth [SECT_SYMTAB].sh_info = 20;
1050 num_sections = collect_sections (acfg, secth, sections, 6);
1051 hash = build_hash (acfg, num_sections, &dyn_str_table);
1052 num_symtab = hash [1]; /* FIXME */
1053 g_print ("num_sections: %d\n", num_sections);
1054 g_print ("dynsym: %d, dynstr size: %d\n", hash [1], dyn_str_table.data->len);
1055 for (i = 0; i < num_sections; ++i) {
1056 g_print ("section %s, size: %d, %x\n", sections [i]->name, sections [i]->cur_offset, sections [i]->cur_offset);
1059 /* at this point we know where in the file the first segment sections go */
1060 dynsym = collect_syms (acfg, hash, &dyn_str_table, NULL, NULL);
1061 num_local_syms = hash [1];
1062 symtab = collect_syms (acfg, NULL, &str_table, secth, &num_local_syms);
1064 for (i = 0; i < num_sections; ++i) {
1065 if (sections [i]->shidx == SECT_TEXT) {
1066 text_section = sections [i];
1067 } else if (sections [i]->shidx == SECT_DATA) {
1068 data_section = sections [i];
1069 } else if (sections [i]->shidx == SECT_BSS) {
1070 bss_section = sections [i];
1074 file_offset = virt_offset = sizeof (header) + sizeof (progh);
1075 secth [SECT_HASH].sh_addr = secth [SECT_HASH].sh_offset = file_offset;
1076 size = sizeof (int) * (2 + hash [0] + hash [1]);
1077 virt_offset = (file_offset += size);
1078 secth [SECT_HASH].sh_size = size;
1079 secth [SECT_DYNSYM].sh_addr = secth [SECT_DYNSYM].sh_offset = file_offset;
1080 size = sizeof (ElfSymbol) * hash [1];
1081 virt_offset = (file_offset += size);
1082 secth [SECT_DYNSYM].sh_size = size;
1083 secth [SECT_DYNSTR].sh_addr = secth [SECT_DYNSTR].sh_offset = file_offset;
1084 size = dyn_str_table.data->len;
1085 virt_offset = (file_offset += size);
1086 secth [SECT_DYNSTR].sh_size = size;
1088 file_offset &= ~(4-1);
1089 secth [SECT_REL_DYN].sh_addr = secth [SECT_REL_DYN].sh_offset = file_offset;
1090 size = sizeof (ElfReloc) * acfg->num_relocs;
1091 secth [SECT_REL_DYN].sh_size = size;
1092 virt_offset = (file_offset += size);
1093 secth [SECT_REL_DYN].sh_size = size;
1094 file_offset += 4096-1;
1095 file_offset &= ~(4096-1);
1096 virt_offset = file_offset;
1097 secth [SECT_TEXT].sh_addr = secth [SECT_TEXT].sh_offset = file_offset;
1098 size = text_section->cur_offset;
1099 secth [SECT_TEXT].sh_size = size;
1100 file_offset += size;
1102 file_offset &= ~(4-1);
1103 virt_offset = file_offset;
1104 /* .dynamic, .got.plt, .data, .bss here */
1105 secth [SECT_DYNAMIC].sh_addr = virt_offset;
1106 secth [SECT_DYNAMIC].sh_offset = file_offset;
1107 size = sizeof (dynamic);
1108 secth [SECT_DYNAMIC].sh_size = size;
1111 file_offset += size;
1112 virt_offset += size;
1113 secth [SECT_GOT_PLT].sh_addr = virt_offset;
1114 secth [SECT_GOT_PLT].sh_offset = file_offset;
1116 secth [SECT_GOT_PLT].sh_size = size;
1119 file_offset += size;
1120 virt_offset += size;
1121 secth [SECT_DATA].sh_addr = virt_offset;
1122 secth [SECT_DATA].sh_offset = file_offset;
1123 size = data_section->cur_offset;
1124 secth [SECT_DATA].sh_size = size;
1127 file_offset += size;
1128 virt_offset += size;
1129 secth [SECT_BSS].sh_addr = virt_offset;
1130 secth [SECT_BSS].sh_offset = file_offset;
1131 size = bss_section->cur_offset;
1132 secth [SECT_BSS].sh_size = size;
1134 /* virtual doesn't matter anymore */
1135 secth [SECT_SHSTRTAB].sh_offset = file_offset;
1136 size = sh_str_table.data->len;
1137 secth [SECT_SHSTRTAB].sh_size = size;
1140 file_offset += size;
1141 secth [SECT_SYMTAB].sh_offset = file_offset;
1142 size = sizeof (ElfSymbol) * num_local_syms;
1143 secth [SECT_SYMTAB].sh_size = size;
1144 file_offset += size;
1145 secth [SECT_STRTAB].sh_offset = file_offset;
1146 size = str_table.data->len;
1147 secth [SECT_STRTAB].sh_size = size;
1148 file_offset += size;
1150 file_offset &= ~(4-1);
1152 text_section->file_offset = secth [SECT_TEXT].sh_offset;
1153 data_section->file_offset = secth [SECT_DATA].sh_offset;
1154 bss_section->file_offset = secth [SECT_BSS].sh_offset;
1156 header.e_ident [0] = 0x7f; header.e_ident [1] = 'E';
1157 header.e_ident [2] = 'L'; header.e_ident [3] = 'F';
1158 header.e_ident [4] = SIZEOF_VOID_P == 4? 1: 2;
1159 header.e_ident [5] = 1; /* FIXME: little endian, bigendian is 2 */
1160 header.e_ident [6] = 1; /* version */
1161 header.e_ident [7] = 0; /* FIXME: */
1162 header.e_ident [8] = 0; /* FIXME: */
1163 for (i = 9; i < 16; ++i)
1164 header.e_ident [i] = 0;
1166 header.e_type = 3; /* shared library */
1167 header.e_machine = 3; /* FIXME: 386 */
1168 header.e_version = 1; /* FIXME: */
1170 header.e_phoff = sizeof (header);
1171 header.e_ehsize = sizeof (header);
1172 header.e_phentsize = sizeof (struct ElfProgHeader);
1174 header.e_entry = secth [SECT_TEXT].sh_addr;
1175 header.e_shstrndx = 10;
1176 header.e_shentsize = sizeof (struct ElfSectHeader);
1177 header.e_shnum = SECT_NUM;
1178 header.e_shoff = file_offset;
1182 dynamic [i].d_tag = DYN_HASH;
1183 dynamic [i].d_val = secth [SECT_HASH].sh_offset;
1185 dynamic [i].d_tag = DYN_STRTAB;
1186 dynamic [i].d_val = secth [SECT_DYNSTR].sh_offset;
1188 dynamic [i].d_tag = DYN_SYMTAB;
1189 dynamic [i].d_val = secth [SECT_DYNSYM].sh_offset;
1191 dynamic [i].d_tag = DYN_STRSZ;
1192 dynamic [i].d_val = dyn_str_table.data->len;
1194 dynamic [i].d_tag = DYN_SYMENT;
1195 dynamic [i].d_val = sizeof (ElfSymbol);
1197 dynamic [i].d_tag = DYN_REL;
1198 dynamic [i].d_val = secth [SECT_REL_DYN].sh_offset;
1200 dynamic [i].d_tag = DYN_RELSZ;
1201 dynamic [i].d_val = secth [SECT_REL_DYN].sh_size;
1203 dynamic [i].d_tag = DYN_RELENT;
1204 dynamic [i].d_val = sizeof (ElfReloc);
1206 dynamic [i].d_tag = DYN_RELCOUNT;
1207 dynamic [i].d_val = acfg->num_relocs;
1210 /* Program header */
1211 memset (&progh, 0, sizeof (progh));
1212 progh [0].p_type = 1; /* LOAD */
1213 progh [0].p_filesz = progh [0].p_memsz = secth [SECT_DYNAMIC].sh_offset;
1214 progh [0].p_align = 4096;
1215 progh [0].p_flags = 5;
1217 progh [1].p_type = 1;
1218 progh [1].p_offset = secth [SECT_DYNAMIC].sh_offset;
1219 progh [1].p_vaddr = progh [1].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1220 progh [1].p_filesz = secth [SECT_BSS].sh_offset - secth [SECT_DYNAMIC].sh_offset;
1221 progh [1].p_memsz = secth [SECT_BSS].sh_addr + secth [SECT_BSS].sh_size - secth [SECT_DYNAMIC].sh_addr;
1222 progh [1].p_align = 4096;
1223 progh [1].p_flags = 6;
1225 progh [2].p_type = 2; /* DYNAMIC */
1226 progh [2].p_offset = secth [SECT_DYNAMIC].sh_offset;
1227 progh [2].p_vaddr = progh [2].p_paddr = secth [SECT_DYNAMIC].sh_addr;
1228 progh [2].p_filesz = progh [2].p_memsz = secth [SECT_DYNAMIC].sh_size;
1229 progh [2].p_align = 4;
1230 progh [2].p_flags = 6;
1232 reloc_symbols (acfg, dynsym, secth, &dyn_str_table, TRUE);
1233 reloc_symbols (acfg, symtab, secth, &str_table, FALSE);
1234 relocs = resolve_relocations (acfg);
1236 fwrite (&header, sizeof (header), 1, file);
1237 fwrite (&progh, sizeof (progh), 1, file);
1238 fwrite (hash, sizeof (int) * (hash [0] + hash [1] + 2), 1, file);
1239 fwrite (dynsym, sizeof (ElfSymbol) * hash [1], 1, file);
1240 fwrite (dyn_str_table.data->str, dyn_str_table.data->len, 1, file);
1242 fseek (file, secth [SECT_REL_DYN].sh_offset, SEEK_SET);
1243 fwrite (relocs, sizeof (ElfReloc), acfg->num_relocs, file);
1245 fseek (file, secth [SECT_TEXT].sh_offset, SEEK_SET);
1246 /* write .text, .data, .bss sections */
1247 fwrite (text_section->data, text_section->cur_offset, 1, file);
1250 fwrite (dynamic, sizeof (dynamic), 1, file);
1252 size = secth [SECT_DYNAMIC].sh_addr;
1253 fwrite (&size, sizeof (size), 1, file);
1254 fseek (file, secth [SECT_DATA].sh_offset, SEEK_SET);
1255 fwrite (data_section->data, data_section->cur_offset, 1, file);
1257 fseek (file, secth [SECT_SHSTRTAB].sh_offset, SEEK_SET);
1258 fwrite (sh_str_table.data->str, sh_str_table.data->len, 1, file);
1259 fseek (file, secth [SECT_SYMTAB].sh_offset, SEEK_SET);
1260 fwrite (symtab, sizeof (ElfSymbol) * num_local_syms, 1, file);
1261 fseek (file, secth [SECT_STRTAB].sh_offset, SEEK_SET);
1262 fwrite (str_table.data->str, str_table.data->len, 1, file);
1263 /*g_print ("file_offset %d vs %d\n", file_offset, ftell (file));*/
1264 /*g_assert (file_offset >= ftell (file));*/
1265 fseek (file, file_offset, SEEK_SET);
1266 fwrite (§h, sizeof (secth), 1, file);
1268 rename (tmp_outfile_name, outfile_name);
1270 g_free (tmp_outfile_name);
1271 g_free (outfile_name);
1276 #endif /* USE_ELF_WRITER */
1281 emit_start (MonoAotCompile *acfg)
1283 if (acfg->aot_opts.asm_only) {
1284 if (acfg->aot_opts.outfile)
1285 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1287 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
1288 acfg->fp = fopen (acfg->tmpfname, "w+");
1290 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
1291 acfg->fp = fdopen (i, "w+");
1293 g_assert (acfg->fp);
1297 emit_unset_mode (MonoAotCompile *acfg)
1299 if (acfg->mode == EMIT_NONE)
1301 fprintf (acfg->fp, "\n");
1302 acfg->mode = EMIT_NONE;
1306 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
1308 emit_unset_mode (acfg);
1309 #if defined(PLATFORM_WIN32)
1310 fprintf (acfg->fp, ".section %s\n", section_name);
1311 #elif defined(__MACH__)
1312 if (strcmp(section_name, ".bss") == 0)
1313 fprintf (acfg->fp, "%s\n", ".data");
1315 fprintf (acfg->fp, "%s\n", section_name);
1316 #elif defined(sparc) || defined(__arm__)
1317 /* For solaris as, GNU as should accept the same */
1318 fprintf (acfg->fp, ".section \"%s\"\n", section_name);
1320 fprintf (acfg->fp, "%s %d\n", section_name, subsection_index);
1325 emit_symbol_type (MonoAotCompile *acfg, const char *name, gboolean func)
1334 emit_unset_mode (acfg);
1335 #if defined(__MACH__)
1337 #elif defined(sparc) || defined(__arm__)
1338 fprintf (acfg->fp, "\t.type %s,#%s\n", name, stype);
1339 #elif defined(PLATFORM_WIN32)
1341 #elif defined(__x86_64__) || defined(__i386__)
1342 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1344 fprintf (acfg->fp, "\t.type %s,@%s\n", name, stype);
1349 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
1351 emit_unset_mode (acfg);
1352 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1353 // mach-o always uses a '_' prefix.
1354 fprintf (acfg->fp, "\t.globl _%s\n", name);
1356 fprintf (acfg->fp, "\t.globl %s\n", name);
1359 emit_symbol_type (acfg, name, func);
1363 emit_label (MonoAotCompile *acfg, const char *name)
1365 emit_unset_mode (acfg);
1366 #if (defined(__ppc__) && defined(__MACH__)) || defined(PLATFORM_WIN32)
1367 // mach-o always uses a '_' prefix.
1368 fprintf (acfg->fp, "_%s:\n", name);
1370 fprintf (acfg->fp, "%s:\n", name);
1373 #if defined(PLATFORM_WIN32)
1374 /* Emit a normal label too */
1375 fprintf (acfg->fp, "%s:\n", name);
1380 emit_string (MonoAotCompile *acfg, const char *value)
1382 emit_unset_mode (acfg);
1383 fprintf (acfg->fp, "\t%s \"%s\"\n", AS_STRING_DIRECTIVE, value);
1387 emit_line (MonoAotCompile *acfg)
1389 emit_unset_mode (acfg);
1390 fprintf (acfg->fp, "\n");
1394 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
1396 emit_unset_mode (acfg);
1397 emit_section_change (acfg, ".text", 1);
1398 emit_global (acfg, name, FALSE);
1399 emit_label (acfg, name);
1400 emit_string (acfg, value);
1404 emit_alignment (MonoAotCompile *acfg, int size)
1406 emit_unset_mode (acfg);
1407 #if defined(__arm__)
1408 fprintf (acfg->fp, "\t.align %d\n", ilog2 (size));
1409 #elif defined(__ppc__) && defined(__MACH__)
1410 // the mach-o assembler specifies alignments as powers of 2.
1411 fprintf (acfg->fp, "\t.align %d\t; ilog2\n", ilog2(size));
1412 #elif defined(__powerpc__)
1413 /* ignore on linux/ppc */
1415 fprintf (acfg->fp, "\t.align %d\n", size);
1420 emit_pointer (MonoAotCompile *acfg, const char *target)
1422 emit_unset_mode (acfg);
1423 emit_alignment (acfg, sizeof (gpointer));
1424 #if defined(__x86_64__)
1425 fprintf (acfg->fp, "\t.quad %s\n", target ? target : "0");
1426 #elif defined(sparc) && SIZEOF_VOID_P == 8
1427 fprintf (acfg->fp, "\t.xword %s\n", target ? target : "0");
1429 fprintf (acfg->fp, "\t.long %s\n", target ? target : "0");
1434 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
1437 if (acfg->mode != EMIT_BYTE) {
1438 acfg->mode = EMIT_BYTE;
1439 acfg->col_count = 0;
1441 for (i = 0; i < size; ++i, ++acfg->col_count) {
1442 if ((acfg->col_count % 32) == 0)
1443 fprintf (acfg->fp, "\n\t.byte ");
1445 fprintf (acfg->fp, ",");
1446 fprintf (acfg->fp, "0x%x", buf [i]);
1451 emit_int16 (MonoAotCompile *acfg, int value)
1453 if (acfg->mode != EMIT_WORD) {
1454 acfg->mode = EMIT_WORD;
1455 acfg->col_count = 0;
1457 if ((acfg->col_count++ % 8) == 0)
1458 #if defined(__MACH__)
1459 fprintf (acfg->fp, "\n\t.short ");
1460 #elif defined(__arm__)
1461 /* FIXME: Use .hword on other archs as well */
1462 fprintf (acfg->fp, "\n\t.hword ");
1464 fprintf (acfg->fp, "\n\t.word ");
1467 fprintf (acfg->fp, ", ");
1468 fprintf (acfg->fp, "%d", value);
1472 emit_int32 (MonoAotCompile *acfg, int value)
1474 if (acfg->mode != EMIT_LONG) {
1475 acfg->mode = EMIT_LONG;
1476 acfg->col_count = 0;
1478 if ((acfg->col_count++ % 8) == 0)
1479 fprintf (acfg->fp, "\n\t.long ");
1481 fprintf (acfg->fp, ",");
1482 fprintf (acfg->fp, "%d", value);
1486 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
1488 if (acfg->mode != EMIT_LONG) {
1489 acfg->mode = EMIT_LONG;
1490 acfg->col_count = 0;
1492 if ((acfg->col_count++ % 8) == 0)
1493 fprintf (acfg->fp, "\n\t.long ");
1495 fprintf (acfg->fp, ",");
1497 fprintf (acfg->fp, "%s - %s + %d", end, start, offset);
1498 else if (offset < 0)
1499 fprintf (acfg->fp, "%s - %s %d", end, start, offset);
1501 fprintf (acfg->fp, "%s - %s", end, start);
1505 emit_zero_bytes (MonoAotCompile *acfg, int num)
1507 emit_unset_mode (acfg);
1508 #if defined(__MACH__)
1509 fprintf (acfg->fp, "\t.space %d\n", num);
1511 fprintf (acfg->fp, "\t.skip %d\n", num);
1516 emit_writeout (MonoAotCompile *acfg)
1518 char *command, *objfile;
1519 char *outfile_name, *tmp_outfile_name;
1523 #if defined(__x86_64__)
1524 #define AS_OPTIONS "--64"
1525 #elif defined(sparc) && SIZEOF_VOID_P == 8
1526 #define AS_OPTIONS "-xarch=v9"
1528 #define AS_OPTIONS ""
1531 if (acfg->aot_opts.asm_only) {
1532 printf ("Output file: '%s'.\n", acfg->tmpfname);
1533 if (acfg->aot_opts.static_link)
1534 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
1538 if (acfg->aot_opts.static_link) {
1539 if (acfg->aot_opts.outfile)
1540 objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1542 objfile = g_strdup_printf ("%s.o", acfg->image->name);
1544 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
1546 command = g_strdup_printf ("as %s %s -o %s", AS_OPTIONS, acfg->tmpfname, objfile);
1547 printf ("Executing the native assembler: %s\n", command);
1548 if (system (command) != 0) {
1556 if (acfg->aot_opts.static_link) {
1557 printf ("Output file: '%s'.\n", objfile);
1558 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
1563 if (acfg->aot_opts.outfile)
1564 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
1566 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
1568 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
1571 command = g_strdup_printf ("ld -shared -G -o %s %s.o", outfile_name, acfg->tmpfname);
1572 #elif defined(__ppc__) && defined(__MACH__)
1573 command = g_strdup_printf ("gcc -dynamiclib -o %s %s.o", outfile_name, acfg->tmpfname);
1574 #elif defined(PLATFORM_WIN32)
1575 command = g_strdup_printf ("gcc -shared --dll -mno-cygwin -o %s %s.o", outfile_name, acfg->tmpfname);
1577 if (acfg->aot_opts.no_dlsym) {
1579 * Need to link using gcc so our ctor function gets called.
1581 command = g_strdup_printf ("gcc -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1583 command = g_strdup_printf ("ld -shared -o %s %s.o", outfile_name, acfg->tmpfname);
1586 printf ("Executing the native linker: %s\n", command);
1587 if (system (command) != 0) {
1588 g_free (tmp_outfile_name);
1589 g_free (outfile_name);
1597 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
1598 printf ("Stripping the binary: %s\n", com);
1602 rename (tmp_outfile_name, outfile_name);
1604 g_free (tmp_outfile_name);
1605 g_free (outfile_name);
1608 if (acfg->aot_opts.save_temps)
1609 printf ("Retained input file.\n");
1611 unlink (acfg->tmpfname);
1616 #endif /* ASM_WRITER */
1619 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
1621 if (acfg->aot_opts.no_dlsym) {
1622 g_ptr_array_add (acfg->globals, g_strdup (name));
1624 emit_global_inner (acfg, name, func);
1629 emit_byte (MonoAotCompile *acfg, guint8 val)
1631 emit_bytes (acfg, &val, 1);
1635 mono_get_field_token (MonoClassField *field)
1637 MonoClass *klass = field->parent;
1640 for (i = 0; i < klass->field.count; ++i) {
1641 if (field == &klass->fields [i])
1642 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
1645 g_assert_not_reached ();
1650 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
1654 //printf ("ENCODE: %d 0x%x.\n", value, value);
1657 * Same encoding as the one used in the metadata, extended to handle values
1658 * greater than 0x1fffffff.
1660 if ((value >= 0) && (value <= 127))
1662 else if ((value >= 0) && (value <= 16383)) {
1663 p [0] = 0x80 | (value >> 8);
1664 p [1] = value & 0xff;
1666 } else if ((value >= 0) && (value <= 0x1fffffff)) {
1667 p [0] = (value >> 24) | 0xc0;
1668 p [1] = (value >> 16) & 0xff;
1669 p [2] = (value >> 8) & 0xff;
1670 p [3] = value & 0xff;
1675 p [1] = (value >> 24) & 0xff;
1676 p [2] = (value >> 16) & 0xff;
1677 p [3] = (value >> 8) & 0xff;
1678 p [4] = value & 0xff;
1686 get_image_index (MonoAotCompile *cfg, MonoImage *image)
1690 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
1694 index = g_hash_table_size (cfg->image_hash);
1695 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
1696 g_ptr_array_add (cfg->image_table, image);
1702 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
1705 MonoClass *k = NULL;
1707 /* FIXME: Search referenced images as well */
1708 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
1709 k = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
1714 if (i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows)
1715 return MONO_TOKEN_TYPE_SPEC | (i + 1);
1721 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
1726 * Encode a reference to KLASS. We use our home-grown encoding instead of the
1727 * standard metadata encoding.
1730 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
1734 if (klass->generic_class) {
1736 g_assert (klass->type_token);
1738 /* Find a typespec for a class if possible */
1739 token = find_typespec_for_class (acfg, klass);
1741 encode_value (token, p, &p);
1742 encode_value (get_image_index (acfg, acfg->image), p, &p);
1744 MonoClass *gclass = klass->generic_class->container_class;
1745 MonoGenericInst *inst = klass->generic_class->context.class_inst;
1748 /* Encode it ourselves */
1750 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1751 encode_value (MONO_TYPE_GENERICINST, p, &p);
1752 encode_klass_ref (acfg, gclass, p, &p);
1753 encode_value (inst->type_argc, p, &p);
1754 for (i = 0; i < inst->type_argc; ++i)
1755 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1757 } else if (klass->type_token) {
1758 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
1759 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
1760 encode_value (get_image_index (acfg, klass->image), p, &p);
1761 } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
1762 MonoGenericParam *param = klass->byval_arg.data.generic_param;
1765 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1766 encode_value (klass->byval_arg.type, p, &p);
1768 encode_value (param->num, p, &p);
1770 g_assert (param->owner);
1771 encode_value (param->owner->is_method, p, &p);
1772 if (param->owner->is_method)
1773 encode_method_ref (acfg, param->owner->owner.method, p, &p);
1775 encode_klass_ref (acfg, param->owner->owner.klass, p, &p);
1778 g_assert (klass->rank > 0);
1779 encode_value (MONO_TOKEN_TYPE_DEF, p, &p);
1780 encode_value (get_image_index (acfg, klass->image), p, &p);
1781 encode_value (klass->rank, p, &p);
1782 encode_klass_ref (acfg, klass->element_class, p, &p);
1788 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
1790 guint32 token = mono_get_field_token (field);
1793 encode_klass_ref (cfg, field->parent, p, &p);
1794 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
1795 encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
1799 #define MAX_IMAGE_INDEX 250
1802 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
1804 guint32 image_index = get_image_index (acfg, method->klass->image);
1805 guint32 token = method->token;
1806 MonoJumpInfoToken *ji;
1809 g_assert (image_index < MAX_IMAGE_INDEX);
1811 if (method->wrapper_type) {
1813 encode_value ((253 << 24), p, &p);
1815 encode_value (method->wrapper_type, p, &p);
1817 switch (method->wrapper_type) {
1818 case MONO_WRAPPER_REMOTING_INVOKE:
1819 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
1820 case MONO_WRAPPER_XDOMAIN_INVOKE: {
1823 m = mono_marshal_method_from_wrapper (method);
1825 encode_method_ref (acfg, m, p, &p);
1828 case MONO_WRAPPER_PROXY_ISINST:
1829 case MONO_WRAPPER_LDFLD:
1830 case MONO_WRAPPER_LDFLDA:
1831 case MONO_WRAPPER_STFLD:
1832 case MONO_WRAPPER_ISINST: {
1833 MonoClass *proxy_class = (MonoClass*)mono_marshal_method_from_wrapper (method);
1834 encode_klass_ref (acfg, proxy_class, p, &p);
1837 case MONO_WRAPPER_LDFLD_REMOTE:
1838 case MONO_WRAPPER_STFLD_REMOTE:
1840 case MONO_WRAPPER_ALLOC: {
1841 int alloc_type = mono_gc_get_managed_allocator_type (method);
1842 g_assert (alloc_type != -1);
1843 encode_value (alloc_type, p, &p);
1846 case MONO_WRAPPER_STELEMREF:
1848 case MONO_WRAPPER_STATIC_RGCTX_INVOKE: {
1851 m = mono_marshal_method_from_wrapper (method);
1853 encode_method_ref (acfg, m, p, &p);
1857 g_assert_not_reached ();
1859 } else if (mono_method_signature (method)->is_inflated) {
1861 * This is a generic method, find the original token which referenced it and
1863 * Obtain the token from information recorded by the JIT.
1865 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1867 image_index = get_image_index (acfg, ji->image);
1868 g_assert (image_index < MAX_IMAGE_INDEX);
1872 encode_value ((255 << 24), p, &p);
1873 encode_value (image_index, p, &p);
1874 encode_value (token, p, &p);
1876 MonoMethod *declaring;
1877 MonoGenericContext *context = mono_method_get_context (method);
1878 MonoGenericInst *inst;
1881 g_assert (method->is_inflated);
1882 declaring = ((MonoMethodInflated*)method)->declaring;
1885 * This might be a non-generic method of a generic instance, which
1886 * doesn't have a token since the reference is generated by the JIT
1887 * like Nullable:Box/Unbox, or by generic sharing.
1891 encode_value ((254 << 24), p, &p);
1892 /* Encode the klass */
1893 encode_klass_ref (acfg, method->klass, p, &p);
1894 /* Encode the method */
1895 image_index = get_image_index (acfg, method->klass->image);
1896 g_assert (image_index < MAX_IMAGE_INDEX);
1897 g_assert (declaring->token);
1898 token = declaring->token;
1899 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1900 encode_value (image_index, p, &p);
1901 encode_value (token, p, &p);
1903 /* Encode the context */
1904 inst = context->class_inst;
1905 encode_value (inst ? 1 : 0, p, &p);
1907 encode_value (inst->type_argc, p, &p);
1908 for (i = 0; i < inst->type_argc; ++i)
1909 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1911 inst = context->method_inst;
1912 encode_value (inst ? 1 : 0, p, &p);
1914 encode_value (inst->type_argc, p, &p);
1915 for (i = 0; i < inst->type_argc; ++i)
1916 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1919 } else if (token == 0) {
1920 /* This might be a method of a constructed type like int[,].Set */
1921 /* Obtain the token from information recorded by the JIT */
1922 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1924 image_index = get_image_index (acfg, ji->image);
1925 g_assert (image_index < MAX_IMAGE_INDEX);
1929 encode_value ((255 << 24), p, &p);
1930 encode_value (image_index, p, &p);
1931 encode_value (token, p, &p);
1933 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1934 encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
1940 compare_patches (gconstpointer a, gconstpointer b)
1944 i = (*(MonoJumpInfo**)a)->ip.i;
1945 j = (*(MonoJumpInfo**)b)->ip.i;
1959 * Return whenever PATCH_INFO refers to a direct call, and thus requires a
1962 static inline gboolean
1963 is_plt_patch (MonoJumpInfo *patch_info)
1965 switch (patch_info->type) {
1966 case MONO_PATCH_INFO_METHOD:
1967 case MONO_PATCH_INFO_INTERNAL_METHOD:
1968 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
1969 case MONO_PATCH_INFO_CLASS_INIT:
1970 case MONO_PATCH_INFO_RGCTX_FETCH:
1971 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
1979 * is_shared_got_patch:
1981 * Return whenever PATCH_INFO refers to a patch which needs a shared GOT
1983 * Keep it in sync with the version in aot-runtime.c.
1985 static inline gboolean
1986 is_shared_got_patch (MonoJumpInfo *patch_info)
1988 switch (patch_info->type) {
1989 case MONO_PATCH_INFO_VTABLE:
1990 case MONO_PATCH_INFO_CLASS:
1991 case MONO_PATCH_INFO_IID:
1992 case MONO_PATCH_INFO_ADJUSTED_IID:
1993 case MONO_PATCH_INFO_FIELD:
1994 case MONO_PATCH_INFO_SFLDA:
1995 case MONO_PATCH_INFO_DECLSEC:
1996 case MONO_PATCH_INFO_LDTOKEN:
1997 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1998 case MONO_PATCH_INFO_RVA:
1999 case MONO_PATCH_INFO_METHODCONST:
2007 get_plt_offset (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
2011 if (is_plt_patch (patch_info)) {
2012 int idx = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_plt_offset, patch_info));
2017 MonoJumpInfo *new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
2019 res = acfg->plt_offset;
2020 g_hash_table_insert (acfg->plt_offset_to_patch, GUINT_TO_POINTER (res), new_ji);
2021 g_hash_table_insert (acfg->patch_to_plt_offset, new_ji, GUINT_TO_POINTER (res));
2022 acfg->plt_offset ++;
2032 * Returns the offset of the GOT slot where the runtime object resulting from resolving
2033 * JI could be found if it exists, otherwise allocates a new one.
2036 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
2040 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji));
2042 return got_offset - 1;
2044 got_offset = acfg->got_offset;
2045 acfg->got_offset ++;
2047 acfg->stats.got_slots ++;
2048 acfg->stats.got_slot_types [ji->type] ++;
2054 get_shared_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
2059 if (!g_hash_table_lookup (acfg->patch_to_shared_got_offset, ji)) {
2060 got_offset = get_got_offset (acfg, ji);
2061 copy = mono_patch_info_dup_mp (acfg->mempool, ji);
2062 g_hash_table_insert (acfg->patch_to_shared_got_offset, copy, GUINT_TO_POINTER (got_offset + 1));
2063 g_ptr_array_add (acfg->shared_patches, copy);
2066 return get_got_offset (acfg, ji);
2069 /* Add a method to the list of methods which need to be emitted */
2071 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index)
2073 if (!g_hash_table_lookup (acfg->method_indexes, method)) {
2074 g_ptr_array_add (acfg->methods, method);
2075 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
2080 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
2082 int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2090 add_method (MonoAotCompile *acfg, MonoMethod *method)
2094 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2098 index = acfg->method_index;
2099 add_method_with_index (acfg, method, index);
2101 /* FIXME: Fix quadratic behavior */
2102 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (index));
2104 acfg->method_index ++;
2110 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
2112 MonoAotCompile *acfg = user_data;
2113 MonoJitICallInfo *callinfo = value;
2114 MonoMethod *wrapper;
2120 name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
2121 wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, check_for_pending_exc);
2124 add_method (acfg, wrapper);
2128 get_runtime_invoke_sig (MonoMethodSignature *sig)
2130 MonoMethodBuilder *mb;
2133 mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
2134 m = mono_mb_create_method (mb, sig, 16);
2135 return mono_marshal_get_runtime_invoke (m);
2139 add_wrappers (MonoAotCompile *acfg)
2141 MonoMethod *method, *m;
2142 int i, j, nallocators;
2143 MonoMethodSignature *sig, *csig;
2147 * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
2148 * so there is only one wrapper of a given type, or inlining their contents into their
2153 * FIXME: This depends on the fact that different wrappers have different
2157 /* FIXME: Collect these automatically */
2159 /* Runtime invoke wrappers */
2161 /* void runtime-invoke () [.cctor] */
2162 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2163 csig->ret = &mono_defaults.void_class->byval_arg;
2164 add_method (acfg, get_runtime_invoke_sig (csig));
2166 /* void runtime-invoke () [Finalize] */
2167 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2169 csig->ret = &mono_defaults.void_class->byval_arg;
2170 add_method (acfg, get_runtime_invoke_sig (csig));
2172 /* void runtime-invoke (string) [exception ctor] */
2173 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
2175 csig->ret = &mono_defaults.void_class->byval_arg;
2176 csig->params [0] = &mono_defaults.string_class->byval_arg;
2177 add_method (acfg, get_runtime_invoke_sig (csig));
2179 /* void runtime-invoke (string, string) [exception ctor] */
2180 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2182 csig->ret = &mono_defaults.void_class->byval_arg;
2183 csig->params [0] = &mono_defaults.string_class->byval_arg;
2184 csig->params [1] = &mono_defaults.string_class->byval_arg;
2185 add_method (acfg, get_runtime_invoke_sig (csig));
2187 /* string runtime-invoke () [Exception.ToString ()] */
2188 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2190 csig->ret = &mono_defaults.string_class->byval_arg;
2191 add_method (acfg, get_runtime_invoke_sig (csig));
2193 /* void runtime-invoke (string, Exception) [exception ctor] */
2194 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2196 csig->ret = &mono_defaults.void_class->byval_arg;
2197 csig->params [0] = &mono_defaults.string_class->byval_arg;
2198 csig->params [1] = &mono_defaults.exception_class->byval_arg;
2199 add_method (acfg, get_runtime_invoke_sig (csig));
2201 /* Assembly runtime-invoke (string, bool) [DoAssemblyResolve] */
2202 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2204 csig->ret = &(mono_class_from_name (
2205 mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
2206 csig->params [0] = &mono_defaults.string_class->byval_arg;
2207 csig->params [1] = &mono_defaults.boolean_class->byval_arg;
2208 add_method (acfg, get_runtime_invoke_sig (csig));
2210 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2212 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2213 gboolean skip = FALSE;
2215 method = mono_get_method (acfg->image, token, NULL);
2217 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2218 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2219 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2222 if (method->is_generic || method->klass->generic_container)
2225 /* Skip methods which can not be handled by get_runtime_invoke () */
2226 sig = mono_method_signature (method);
2227 if ((sig->ret->type == MONO_TYPE_PTR) ||
2228 (sig->ret->type == MONO_TYPE_TYPEDBYREF))
2231 for (j = 0; j < sig->param_count; j++) {
2232 if (sig->params [j]->type == MONO_TYPE_TYPEDBYREF)
2237 add_method (acfg, mono_marshal_get_runtime_invoke (method));
2240 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
2241 /* JIT icall wrappers */
2242 /* FIXME: locking */
2243 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
2245 /* Managed Allocators */
2246 nallocators = mono_gc_get_managed_allocator_types ();
2247 for (i = 0; i < nallocators; ++i) {
2248 m = mono_gc_get_managed_allocator_by_type (i);
2250 add_method (acfg, m);
2254 add_method (acfg, mono_marshal_get_stelemref ());
2257 /* remoting-invoke wrappers */
2258 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2259 MonoMethodSignature *sig;
2261 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2262 method = mono_get_method (acfg->image, token, NULL);
2264 sig = mono_method_signature (method);
2266 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class) &&
2267 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
2268 m = mono_marshal_get_remoting_invoke_with_check (method);
2270 add_method (acfg, m);
2275 /* static rgctx wrappers */
2276 /* FIXME: Each wrapper belongs to a given instantiation of a generic method */
2277 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2278 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2279 method = mono_get_method (acfg->image, token, NULL);
2281 if (((method->flags & METHOD_ATTRIBUTE_STATIC) ||
2282 (method->is_inflated && mono_method_get_context (method)->method_inst)) &&
2283 mono_class_generic_sharing_enabled (method->klass) &&
2284 mono_method_is_generic_sharable_impl (method, FALSE)) {
2285 m = mono_marshal_get_static_rgctx_invoke (method);
2286 add_method (acfg, m);
2293 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only)
2295 int i, pindex, start_index, method_index;
2297 MonoJumpInfo *patch_info;
2298 MonoMethodHeader *header;
2303 header = mono_method_get_header (method);
2305 method_index = get_method_index (acfg, method);
2308 /* Collect and sort relocations */
2309 patches = g_ptr_array_new ();
2310 for (patch_info = relocs; patch_info; patch_info = patch_info->next)
2311 g_ptr_array_add (patches, patch_info);
2312 g_ptr_array_sort (patches, compare_patches);
2315 for (i = 0; i < code_len; i++) {
2317 for (pindex = start_index; pindex < patches->len; ++pindex) {
2318 patch_info = g_ptr_array_index (patches, pindex);
2319 if (patch_info->ip.i >= i)
2323 #ifdef MONO_ARCH_AOT_SUPPORTED
2325 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
2326 start_index = pindex;
2328 switch (patch_info->type) {
2329 case MONO_PATCH_INFO_NONE:
2331 case MONO_PATCH_INFO_GOT_OFFSET: {
2332 guint32 offset = mono_arch_get_patch_offset (code + i);
2333 emit_bytes (acfg, code + i, offset);
2334 emit_symbol_diff (acfg, "got", ".", offset);
2336 i += offset + 4 - 1;
2341 char *direct_call_target;
2343 if (!is_got_patch (patch_info->type))
2347 * If this patch is a call, try emitting a direct call instead of
2348 * through a PLT entry. This is possible if the called method is in
2349 * the same assembly and requires no initialization.
2351 direct_call_target = NULL;
2352 if (!got_only && (patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == method->klass->image)) {
2353 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
2355 if (!callee_cfg->has_got_slots && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)) {
2356 //printf ("DIRECT: %s %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (callee_cfg->method, TRUE));
2357 direct_call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, callee_cfg->orig_method));
2358 patch_info->type = MONO_PATCH_INFO_NONE;
2359 acfg->stats.direct_calls ++;
2363 acfg->stats.all_calls ++;
2366 if (!got_only && !direct_call_target) {
2367 int plt_offset = get_plt_offset (acfg, patch_info);
2368 if (plt_offset != -1) {
2369 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
2370 direct_call_target = g_strdup_printf (".Lp_%d", plt_offset);
2372 /* Nullify the patch */
2373 patch_info->type = MONO_PATCH_INFO_NONE;
2377 if (direct_call_target) {
2378 #if defined(__i386__) || defined(__x86_64__)
2379 g_assert (code [i] == 0xe8);
2380 /* Need to make sure this is exactly 5 bytes long */
2381 emit_byte (acfg, '\xe8');
2382 emit_symbol_diff (acfg, direct_call_target, ".", -4);
2384 #elif defined(__arm__)
2385 #ifdef USE_BIN_WRITER
2386 /* FIXME: Can't encode this using the current symbol writer functions */
2387 g_assert_not_reached ();
2389 emit_unset_mode (acfg);
2390 fprintf (acfg->fp, "bl %s\n", direct_call_target);
2395 g_free (direct_call_target);
2397 got_slot = get_got_offset (acfg, patch_info);
2399 emit_bytes (acfg, code + i, mono_arch_get_patch_offset (code + i));
2401 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
2402 #elif defined(__i386__)
2403 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
2404 #elif defined(__arm__)
2405 emit_symbol_diff (acfg, "got", ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
2407 g_assert_not_reached ();
2410 i += mono_arch_get_patch_offset (code + i) + 4 - 1;
2416 #endif /* MONO_ARCH_AOT_SUPPORTED */
2419 emit_bytes (acfg, code + i, 1);
2424 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
2430 int func_alignment = 16;
2431 MonoMethodHeader *header;
2433 method = cfg->orig_method;
2434 code = cfg->native_code;
2435 header = mono_method_get_header (method);
2437 method_index = get_method_index (acfg, method);
2439 /* Make the labels local */
2440 symbol = g_strdup_printf (".Lm_%x", method_index);
2442 emit_alignment (acfg, func_alignment);
2443 emit_label (acfg, symbol);
2444 if (acfg->aot_opts.write_symbols)
2445 emit_global (acfg, symbol, TRUE);
2447 if (cfg->verbose_level > 0)
2448 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
2451 acfg->stats.code_size += cfg->code_len;
2453 acfg->method_got_offsets [method_index] = acfg->got_offset;
2455 emit_and_reloc_code (acfg, method, code, cfg->code_len, cfg->patch_info, FALSE);
2463 * Encode PATCH_INFO into its disk representation.
2466 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
2470 switch (patch_info->type) {
2471 case MONO_PATCH_INFO_NONE:
2473 case MONO_PATCH_INFO_IMAGE:
2474 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
2476 case MONO_PATCH_INFO_METHOD_REL:
2477 encode_value ((gint)patch_info->data.offset, p, &p);
2479 case MONO_PATCH_INFO_SWITCH: {
2480 gpointer *table = (gpointer *)patch_info->data.table->table;
2483 encode_value (patch_info->data.table->table_size, p, &p);
2484 for (k = 0; k < patch_info->data.table->table_size; k++)
2485 encode_value ((int)(gssize)table [k], p, &p);
2488 case MONO_PATCH_INFO_METHODCONST:
2489 case MONO_PATCH_INFO_METHOD:
2490 case MONO_PATCH_INFO_METHOD_JUMP:
2491 case MONO_PATCH_INFO_ICALL_ADDR:
2492 case MONO_PATCH_INFO_METHOD_RGCTX:
2493 encode_method_ref (acfg, patch_info->data.method, p, &p);
2495 case MONO_PATCH_INFO_INTERNAL_METHOD:
2496 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
2497 guint32 len = strlen (patch_info->data.name);
2499 encode_value (len, p, &p);
2501 memcpy (p, patch_info->data.name, len);
2506 case MONO_PATCH_INFO_LDSTR: {
2507 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
2508 guint32 token = patch_info->data.token->token;
2509 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
2510 encode_value (image_index, p, &p);
2511 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
2514 case MONO_PATCH_INFO_RVA:
2515 case MONO_PATCH_INFO_DECLSEC:
2516 case MONO_PATCH_INFO_LDTOKEN:
2517 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
2518 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
2519 encode_value (patch_info->data.token->token, p, &p);
2521 case MONO_PATCH_INFO_EXC_NAME: {
2522 MonoClass *ex_class;
2525 mono_class_from_name (mono_defaults.exception_class->image,
2526 "System", patch_info->data.target);
2527 g_assert (ex_class);
2528 encode_klass_ref (acfg, ex_class, p, &p);
2531 case MONO_PATCH_INFO_R4:
2532 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2534 case MONO_PATCH_INFO_R8:
2535 encode_value (*((guint32 *)patch_info->data.target), p, &p);
2536 encode_value (*(((guint32 *)patch_info->data.target) + 1), p, &p);
2538 case MONO_PATCH_INFO_VTABLE:
2539 case MONO_PATCH_INFO_CLASS:
2540 case MONO_PATCH_INFO_IID:
2541 case MONO_PATCH_INFO_ADJUSTED_IID:
2542 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2544 case MONO_PATCH_INFO_CLASS_INIT:
2545 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
2546 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
2548 case MONO_PATCH_INFO_FIELD:
2549 case MONO_PATCH_INFO_SFLDA:
2550 encode_field_info (acfg, patch_info->data.field, p, &p);
2552 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
2554 case MONO_PATCH_INFO_RGCTX_FETCH: {
2555 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
2557 encode_method_ref (acfg, entry->method, p, &p);
2558 encode_value (entry->in_mrgctx, p, &p);
2559 encode_value (entry->info_type, p, &p);
2560 encode_value (entry->data->type, p, &p);
2561 encode_patch (acfg, entry->data, p, &p);
2564 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
2567 g_warning ("unable to handle jump info %d", patch_info->type);
2568 g_assert_not_reached ();
2575 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, int first_got_offset, guint8 *buf, guint8 **endbuf)
2578 guint32 last_offset, j, pindex;
2579 MonoJumpInfo *patch_info;
2581 encode_value (n_patches, p, &p);
2584 encode_value (first_got_offset, p, &p);
2586 /* First encode the type+position table */
2589 for (pindex = 0; pindex < patches->len; ++pindex) {
2591 patch_info = g_ptr_array_index (patches, pindex);
2593 if (patch_info->type == MONO_PATCH_INFO_NONE)
2598 //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
2599 offset = patch_info->ip.i - last_offset;
2600 last_offset = patch_info->ip.i;
2602 /* Only the type is needed */
2603 *p = patch_info->type;
2607 /* Then encode the other info */
2608 for (pindex = 0; pindex < patches->len; ++pindex) {
2609 patch_info = g_ptr_array_index (patches, pindex);
2611 if (is_shared_got_patch (patch_info)) {
2612 guint32 offset = get_got_offset (acfg, patch_info);
2613 encode_value (offset, p, &p);
2615 encode_patch (acfg, patch_info, p, &p);
2623 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
2627 int pindex, buf_size, n_patches;
2631 MonoJumpInfo *patch_info;
2632 MonoMethodHeader *header;
2633 guint32 method_index;
2635 guint32 first_got_offset;
2637 method = cfg->orig_method;
2638 code = cfg->native_code;
2639 header = mono_method_get_header (method);
2641 method_index = get_method_index (acfg, method);
2643 /* Make the labels local */
2644 symbol = g_strdup_printf (".Lm_%x_p", method_index);
2646 /* Sort relocations */
2647 patches = g_ptr_array_new ();
2648 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
2649 g_ptr_array_add (patches, patch_info);
2650 g_ptr_array_sort (patches, compare_patches);
2652 first_got_offset = acfg->method_got_offsets [method_index];
2654 /**********************/
2655 /* Encode method info */
2656 /**********************/
2658 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
2659 p = buf = g_malloc (buf_size);
2661 if (mono_class_get_cctor (method->klass))
2662 encode_klass_ref (acfg, method->klass, p, &p);
2664 /* Not needed when loading the method */
2665 encode_value (0, p, &p);
2668 if (cfg->opt & MONO_OPT_SHARED) {
2669 encode_value (g_list_length (cfg->ldstr_list), p, &p);
2670 for (l = cfg->ldstr_list; l; l = l->next) {
2671 encode_value ((long)l->data, p, &p);
2675 /* Used only in shared mode */
2676 g_assert (!cfg->ldstr_list);
2679 for (pindex = 0; pindex < patches->len; ++pindex) {
2680 patch_info = g_ptr_array_index (patches, pindex);
2682 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
2683 (patch_info->type == MONO_PATCH_INFO_NONE)) {
2684 patch_info->type = MONO_PATCH_INFO_NONE;
2689 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
2690 /* Stored in a GOT slot initialized at module load time */
2691 patch_info->type = MONO_PATCH_INFO_NONE;
2695 if (is_plt_patch (patch_info)) {
2696 /* Calls are made through the PLT */
2697 patch_info->type = MONO_PATCH_INFO_NONE;
2705 g_assert (cfg->has_got_slots);
2707 encode_patch_list (acfg, patches, n_patches, first_got_offset, p, &p);
2709 acfg->stats.info_size += p - buf;
2711 /* Emit method info */
2713 emit_label (acfg, symbol);
2716 g_assert (p - buf < buf_size);
2717 emit_bytes (acfg, buf, p - buf);
2722 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
2725 int k, buf_size, method_index;
2726 guint32 debug_info_size;
2729 MonoMethodHeader *header;
2730 guint8 *p, *buf, *debug_info;
2731 MonoJitInfo *jinfo = cfg->jit_info;
2733 method = cfg->orig_method;
2734 code = cfg->native_code;
2735 header = mono_method_get_header (method);
2737 method_index = get_method_index (acfg, method);
2739 /* Make the labels local */
2740 symbol = g_strdup_printf (".Le_%x_p", method_index);
2742 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
2744 buf_size = header->num_clauses * 256 + debug_info_size + 128;
2745 p = buf = g_malloc (buf_size);
2747 encode_value (jinfo->code_size, p, &p);
2748 encode_value (jinfo->used_regs, p, &p);
2749 encode_value (jinfo->has_generic_jit_info, p, &p);
2751 /* Exception table */
2752 if (header->num_clauses) {
2753 for (k = 0; k < header->num_clauses; ++k) {
2754 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
2756 encode_value (ei->exvar_offset, p, &p);
2758 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
2759 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
2761 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
2762 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
2763 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
2767 if (jinfo->has_generic_jit_info) {
2768 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
2770 encode_value (gi->has_this ? 1 : 0, p, &p);
2771 encode_value (gi->this_reg, p, &p);
2772 encode_value (gi->this_offset, p, &p);
2775 * Need to encode jinfo->method too, since it is not equal to 'method'
2776 * when using generic sharing.
2778 encode_method_ref (acfg, jinfo->method, p, &p);
2781 g_assert (debug_info_size < buf_size);
2783 encode_value (debug_info_size, p, &p);
2784 if (debug_info_size) {
2785 memcpy (p, debug_info, debug_info_size);
2786 p += debug_info_size;
2787 g_free (debug_info);
2790 acfg->stats.ex_info_size += p - buf;
2794 emit_label (acfg, symbol);
2797 g_assert (p - buf < buf_size);
2798 emit_bytes (acfg, buf, p - buf);
2803 emit_klass_info (MonoAotCompile *acfg, guint32 token)
2805 MonoClass *klass = mono_class_get (acfg->image, token);
2809 gboolean no_special_static, cant_encode;
2810 gpointer iter = NULL;
2812 buf_size = 10240 + (klass->vtable_size * 16);
2813 p = buf = g_malloc (buf_size);
2817 mono_class_init (klass);
2819 mono_class_get_nested_types (klass, &iter);
2820 g_assert (klass->nested_classes_inited);
2822 mono_class_setup_vtable (klass);
2825 * Emit all the information which is required for creating vtables so
2826 * the runtime does not need to create the MonoMethod structures which
2827 * take up a lot of space.
2830 no_special_static = !mono_class_has_special_static_fields (klass);
2832 /* Check whenever we have enough info to encode the vtable */
2833 cant_encode = FALSE;
2834 for (i = 0; i < klass->vtable_size; ++i) {
2835 MonoMethod *cm = klass->vtable [i];
2837 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
2841 if (klass->generic_container || cant_encode) {
2842 encode_value (-1, p, &p);
2844 encode_value (klass->vtable_size, p, &p);
2845 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);
2846 if (klass->has_cctor)
2847 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
2848 if (klass->has_finalize)
2849 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
2851 encode_value (klass->instance_size, p, &p);
2852 encode_value (mono_class_data_size (klass), p, &p);
2853 encode_value (klass->packing_size, p, &p);
2854 encode_value (klass->min_align, p, &p);
2856 for (i = 0; i < klass->vtable_size; ++i) {
2857 MonoMethod *cm = klass->vtable [i];
2860 encode_method_ref (acfg, cm, p, &p);
2862 encode_value (0, p, &p);
2866 acfg->stats.class_info_size += p - buf;
2869 symbol = g_strdup_printf (".LK_I_%x", token - MONO_TOKEN_TYPE_DEF - 1);
2870 emit_label (acfg, symbol);
2873 g_assert (p - buf < buf_size);
2874 emit_bytes (acfg, buf, p - buf);
2879 * Calls made from AOTed code are routed through a table of jumps similar to the
2880 * ELF PLT (Program Linkage Table). The differences are the following:
2881 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
2882 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
2883 * jumps. This means the jumps need to be patched when the address of the callee is
2884 * known. Initially the PLT entries jump to code which transfers control to the
2885 * AOT runtime through the first PLT entry.
2888 emit_plt (MonoAotCompile *acfg)
2893 guint32 *plt_info_offsets;
2896 * Encode info need to resolve PLT entries.
2898 buf_size = acfg->plt_offset * 128;
2899 p = buf = g_malloc (buf_size);
2901 plt_info_offsets = g_new0 (guint32, acfg->plt_offset);
2903 for (i = 1; i < acfg->plt_offset; ++i) {
2904 MonoJumpInfo *patch_info = g_hash_table_lookup (acfg->plt_offset_to_patch, GUINT_TO_POINTER (i));
2906 plt_info_offsets [i] = p - buf;
2907 encode_value (patch_info->type, p, &p);
2908 encode_patch (acfg, patch_info, p, &p);
2912 symbol = g_strdup_printf ("plt");
2914 /* This section will be made read-write by the AOT loader */
2915 emit_section_change (acfg, ".text", 0);
2916 emit_global (acfg, symbol, TRUE);
2917 emit_alignment (acfg, PAGESIZE);
2918 emit_label (acfg, symbol);
2921 #if defined(USE_BIN_WRITER) && defined(__arm__)
2923 g_assert_not_reached ();
2926 for (i = 0; i < acfg->plt_offset; ++i) {
2929 label = g_strdup_printf (".Lp_%d", i);
2930 emit_label (acfg, label);
2934 * The first plt entry is used to transfer code to the AOT loader.
2937 #if defined(__i386__)
2939 /* It is filled up during loading by the AOT loader. */
2940 emit_zero_bytes (acfg, 16);
2942 /* Need to make sure this is 9 bytes long */
2943 emit_byte (acfg, '\xe9');
2944 emit_symbol_diff (acfg, "plt", ".", -4);
2945 emit_int32 (acfg, plt_info_offsets [i]);
2947 #elif defined(__x86_64__)
2949 * We can't emit jumps because they are 32 bits only so they can't be patched.
2950 * So we emit a jump table instead whose entries are patched by the AOT loader to
2951 * point to .Lpd entries. ELF stores these in the GOT too, but we don't, since
2952 * methods with GOT entries can't be called directly.
2953 * We also emit the default PLT code here since the PLT code will not be patched.
2954 * An x86_64 plt entry is 10 bytes long, init_plt () depends on this.
2956 /* jmpq *<offset>(%rip) */
2957 emit_byte (acfg, '\xff');
2958 emit_byte (acfg, '\x25');
2959 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)) -4);
2960 /* Used by mono_aot_get_plt_info_offset */
2961 emit_int32 (acfg, plt_info_offsets [i]);
2962 #elif defined(__arm__)
2964 * - optimize OP_AOTCONST implementation
2965 * - optimize the PLT entries
2966 * - optimize SWITCH AOT implementation
2967 * - implement IMT support
2969 emit_unset_mode (acfg);
2970 fprintf (acfg->fp, "\tldr ip, [pc, #4]\n");
2971 fprintf (acfg->fp, "\tadd ip, pc, ip\n");
2972 fprintf (acfg->fp, "\tldr pc, [ip, #0]\n");
2973 emit_symbol_diff (acfg, "plt_jump_table", ".", (i * sizeof (gpointer)));
2974 /* Used by mono_aot_get_plt_info_offset */
2975 #if defined(__MACH__)
2976 fprintf (acfg->fp, "\n\t.long %d\n", plt_info_offsets [i]);
2978 fprintf (acfg->fp, "\n\t.word %d\n", plt_info_offsets [i]);
2982 g_assert_not_reached ();
2986 g_free (plt_info_offsets);
2988 symbol = g_strdup_printf ("plt_end");
2989 emit_global (acfg, symbol, TRUE);
2990 emit_label (acfg, symbol);
2994 symbol = g_strdup_printf ("plt_info");
2995 emit_global (acfg, symbol, FALSE);
2996 emit_label (acfg, symbol);
2999 g_assert (p - buf < buf_size);
3000 emit_bytes (acfg, buf, p - buf);
3003 symbol = g_strdup_printf ("plt_jump_table_addr");
3004 emit_section_change (acfg, ".data", 0);
3005 emit_global (acfg, symbol, FALSE);
3006 emit_alignment (acfg, 8);
3007 emit_label (acfg, symbol);
3008 emit_pointer (acfg, "plt_jump_table");
3011 symbol = g_strdup_printf ("plt_jump_table_size");
3012 emit_section_change (acfg, ".data", 0);
3013 emit_global (acfg, symbol, FALSE);
3014 emit_alignment (acfg, 8);
3015 emit_label (acfg, symbol);
3016 emit_symbol_diff (acfg, "plt_jump_table_end", "plt_jump_table", 0);
3019 /* Don't make this a global so accesses don't need relocations */
3020 symbol = g_strdup_printf ("plt_jump_table");
3021 emit_section_change (acfg, ".bss", 0);
3022 emit_label (acfg, symbol);
3025 #if defined(__x86_64__) || defined(__arm__)
3026 emit_zero_bytes (acfg, (int)(acfg->plt_offset * sizeof (gpointer)));
3029 symbol = g_strdup_printf ("plt_jump_table_end");
3030 emit_label (acfg, symbol);
3034 static G_GNUC_UNUSED void
3035 emit_named_code (MonoAotCompile *acfg, const char *name, guint8 *code,
3036 guint32 code_size, int got_offset, MonoJumpInfo *ji)
3040 MonoJumpInfo *patch_info;
3046 symbol = g_strdup_printf ("%s", name);
3048 emit_section_change (acfg, ".text", 0);
3049 emit_global (acfg, symbol, TRUE);
3050 emit_alignment (acfg, 16);
3051 emit_label (acfg, symbol);
3055 * The code should access everything through the GOT, so we pass
3058 emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE);
3062 /* Sort relocations */
3063 patches = g_ptr_array_new ();
3064 for (patch_info = ji; patch_info; patch_info = patch_info->next)
3065 g_ptr_array_add (patches, patch_info);
3066 g_ptr_array_sort (patches, compare_patches);
3068 buf_size = patches->len * 128 + 128;
3069 buf = g_malloc (buf_size);
3072 encode_patch_list (acfg, patches, patches->len, got_offset, p, &p);
3073 g_assert (p - buf < buf_size);
3075 symbol = g_strdup_printf ("%s_p", name);
3077 emit_section_change (acfg, ".text", 0);
3078 emit_global (acfg, symbol, FALSE);
3079 emit_label (acfg, symbol);
3082 emit_bytes (acfg, buf, p - buf);
3086 * When running in aot-only mode, we can't create trampolines at runtime, so we create
3087 * a few, and save them in the AOT file. Normal trampolines embed their argument as a
3088 * literal inside the trampoline code, we can't do that here, so instead we embed an offset
3089 * which needs to be added to the trampoline address to get the address of the GOT slot
3090 * which contains the argument value.
3091 * The generated trampolines jump to the generic trampolines using another GOT slot, which
3092 * will be setup by the AOT loader to point to the generic trampoline code of the given
3096 emit_trampolines (MonoAotCompile *acfg)
3100 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3107 if (!acfg->aot_opts.full_aot)
3110 g_assert (acfg->image->assembly);
3112 /* Currently, we only emit most trampolines into the mscorlib AOT image. */
3113 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
3114 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3116 * Emit the generic trampolines.
3118 * We could save some code by treating the generic trampolines as a wrapper
3119 * method, but that approach has its own complexities, so we choose the simpler
3122 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
3123 code = mono_arch_create_trampoline_code_full (tramp_type, &code_size, &ji, TRUE);
3125 /* Emit trampoline code */
3127 symbol = g_strdup_printf ("generic_trampoline_%d", tramp_type);
3129 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3134 code = mono_arch_get_nullified_class_init_trampoline (&code_size);
3135 emit_named_code (acfg, "nullified_class_init_trampoline", code, code_size, acfg->got_offset, NULL);
3137 /* Emit the exception related code pieces */
3138 code = mono_arch_get_restore_context_full (&code_size, &ji, TRUE);
3139 emit_named_code (acfg, "restore_context", code, code_size, acfg->got_offset, ji);
3140 code = mono_arch_get_call_filter_full (&code_size, &ji, TRUE);
3141 emit_named_code (acfg, "call_filter", code, code_size, acfg->got_offset, ji);
3142 code = mono_arch_get_throw_exception_full (&code_size, &ji, TRUE);
3143 emit_named_code (acfg, "throw_exception", code, code_size, acfg->got_offset, ji);
3144 code = mono_arch_get_rethrow_exception_full (&code_size, &ji, TRUE);
3145 emit_named_code (acfg, "rethrow_exception", code, code_size, acfg->got_offset, ji);
3146 code = mono_arch_get_throw_exception_by_name_full (&code_size, &ji, TRUE);
3147 emit_named_code (acfg, "throw_exception_by_name", code, code_size, acfg->got_offset, ji);
3148 code = mono_arch_get_throw_corlib_exception_full (&code_size, &ji, TRUE);
3149 emit_named_code (acfg, "throw_corlib_exception", code, code_size, acfg->got_offset, ji);
3152 for (i = 0; i < 128; ++i) {
3155 offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
3156 code = mono_arch_create_rgctx_lazy_fetch_trampoline_full (offset, &code_size, &ji, TRUE);
3157 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", offset);
3158 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3161 offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
3162 code = mono_arch_create_rgctx_lazy_fetch_trampoline_full (offset, &code_size, &ji, TRUE);
3163 symbol = g_strdup_printf ("rgctx_fetch_trampoline_%u", offset);
3164 emit_named_code (acfg, symbol, code, code_size, acfg->got_offset, ji);
3171 * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
3175 /* Reserve some entries at the end of the GOT for our use */
3176 acfg->num_trampoline_got_entries = acfg->num_aot_trampolines * 2;
3178 symbol = g_strdup_printf ("trampolines");
3180 emit_section_change (acfg, ".text", 0);
3181 emit_global (acfg, symbol, TRUE);
3182 emit_alignment (acfg, 16);
3183 emit_label (acfg, symbol);
3185 for (i = 0; i < acfg->num_aot_trampolines; ++i) {
3186 offset = acfg->got_offset + (i * 2);
3189 * The trampolines created here are variations of the specific
3190 * trampolines created in mono_arch_create_specific_trampoline (). The
3192 * - the generic trampoline address is taken from a got slot.
3193 * - the offset of the got slot where the trampoline argument is stored
3194 * is embedded in the instruction stream, and the generic trampoline
3195 * can load the argument by loading the offset, adding it to the
3196 * address of the trampoline to get the address of the got slot, and
3197 * loading the argument from the there.
3199 #if defined(__x86_64__)
3200 /* This should be exactly 16 bytes long */
3201 /* It should work together with the generic trampoline code in tramp-amd64.c */
3202 /* call *<offset>(%rip) */
3203 emit_byte (acfg, '\x41');
3204 emit_byte (acfg, '\xff');
3205 emit_byte (acfg, '\x15');
3206 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4);
3207 /* This should be relative to the start of the trampoline */
3208 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 19);
3209 emit_zero_bytes (acfg, 5);
3210 #elif defined(__arm__)
3214 /* Generate the trampoline code */
3215 /* This should be exactly 28 bytes long */
3218 ARM_PUSH (code, 0x5fff);
3219 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 8);
3220 /* Load the value from the GOT */
3221 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
3223 ARM_MOV_REG_REG (code, ARMREG_LR, ARMREG_PC);
3224 ARM_MOV_REG_REG (code, ARMREG_PC, ARMREG_R1);
3226 g_assert (code - buf == 20);
3229 emit_bytes (acfg, buf, code - buf);
3230 emit_symbol_diff (acfg, "got", ".", (offset * sizeof (gpointer)) - 4 + 8);
3231 emit_symbol_diff (acfg, "got", ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
3234 g_assert_not_reached ();
3239 /* Unbox trampolines */
3241 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3243 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
3247 method = mono_get_method (acfg->image, token, NULL);
3249 cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
3250 if (!cfg || !cfg->orig_method->klass->valuetype || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL))
3253 symbol = g_strdup_printf ("unbox_trampoline_%d", i);
3255 emit_section_change (acfg, ".text", 0);
3256 emit_global (acfg, symbol, TRUE);
3257 emit_label (acfg, symbol);
3259 call_target = g_strdup_printf (".Lm_%x", get_method_index (acfg, cfg->orig_method));
3261 #if defined(__x86_64__)
3266 this_reg = mono_arch_get_this_arg_reg (mono_method_signature (cfg->orig_method), cfg->generic_sharing_context, NULL);
3268 amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
3270 emit_bytes (acfg, buf, code - buf);
3272 emit_byte (acfg, '\xe9');
3273 emit_symbol_diff (acfg, call_target, ".", -4);
3275 #elif defined(__arm__)
3282 if (MONO_TYPE_ISSTRUCT (mono_method_signature (cfg->orig_method)->ret))
3285 ARM_ADD_REG_IMM8 (code, this_pos, this_pos, sizeof (MonoObject));
3287 emit_bytes (acfg, buf, code - buf);
3288 /* jump to method */
3289 #if defined(USE_BIN_WRITER)
3291 g_assert_not_reached ();
3293 fprintf (acfg->fp, "\n\tb %s\n", call_target);
3296 g_assert_not_reached ();
3300 symbol = g_strdup_printf ("trampolines_info");
3302 emit_section_change (acfg, ".text", 0);
3303 emit_global (acfg, symbol, TRUE);
3304 emit_alignment (acfg, PAGESIZE);
3305 emit_label (acfg, symbol);
3307 emit_int32 (acfg, acfg->num_aot_trampolines);
3308 emit_int32 (acfg, acfg->got_offset);
3312 str_begins_with (const char *str1, const char *str2)
3314 int len = strlen (str2);
3315 return strncmp (str1, str2, len) == 0;
3319 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
3321 gchar **args, **ptr;
3323 memset (opts, 0, sizeof (*opts));
3325 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
3326 for (ptr = args; ptr && *ptr; ptr ++) {
3327 const char *arg = *ptr;
3329 if (str_begins_with (arg, "outfile=")) {
3330 opts->outfile = g_strdup (arg + strlen ("outfile="));
3331 } else if (str_begins_with (arg, "save-temps")) {
3332 opts->save_temps = TRUE;
3333 } else if (str_begins_with (arg, "keep-temps")) {
3334 opts->save_temps = TRUE;
3335 } else if (str_begins_with (arg, "write-symbols")) {
3336 opts->write_symbols = TRUE;
3337 } else if (str_begins_with (arg, "metadata-only")) {
3338 opts->metadata_only = TRUE;
3339 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
3340 opts->bind_to_runtime_version = TRUE;
3341 } else if (str_begins_with (arg, "full")) {
3342 opts->full_aot = TRUE;
3344 * The no-dlsym option is only useful on the iphone, and even there,
3345 * do to other limitations of the dynamic linker, it doesn't seem to
3346 * work. So disable it for now so we don't have to support it.
3349 } else if (str_begins_with (arg, "no-dlsym")) {
3350 opts->no_dlsym = TRUE;
3352 } else if (str_begins_with (arg, "static")) {
3353 opts->static_link = TRUE;
3354 opts->no_dlsym = TRUE;
3355 } else if (str_begins_with (arg, "asmonly")) {
3356 opts->asm_only = TRUE;
3358 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
3367 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
3369 MonoMethod *method = (MonoMethod*)key;
3370 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
3371 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
3372 MonoAotCompile *acfg = user_data;
3374 new_ji->image = ji->image;
3375 new_ji->token = ji->token;
3376 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
3380 compile_method (MonoAotCompile *acfg, MonoMethod *method)
3383 MonoJumpInfo *patch_info;
3386 MonoMethod *wrapped;
3388 if (acfg->aot_opts.metadata_only)
3391 index = get_method_index (acfg, method);
3393 /* fixme: maybe we can also precompile wrapper methods */
3394 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
3395 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
3396 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
3397 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
3401 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
3404 wrapped = mono_marshal_method_from_wrapper (method);
3405 if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
3406 // FIXME: The wrapper should be generic too, but it is not
3409 acfg->stats.mcount++;
3411 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
3413 * FIXME: Enabling this causes virtual-sync.exe to fail, since the trampoline
3414 * code can't determine that it needs to insert a sync wrapper in the AOT case.
3420 * FIXME: This does not work currently, because
3421 * mono_metadata_generic_context_hash () uses inst->id which is different at
3422 * AOT time and runtime, causing the IMT slot of methods to change.
3425 if (method->is_generic || method->klass->generic_container) {
3426 acfg->stats.genericcount ++;
3431 if (acfg->aot_opts.full_aot)
3432 mono_use_imt = FALSE;
3435 * Since these methods are the only ones which are compiled with
3436 * AOT support, and they are not used by runtime startup/shutdown code,
3437 * the runtime will not see AOT methods during AOT compilation,so it
3438 * does not need to support them by creating a fake GOT etc.
3440 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
3441 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3442 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
3443 acfg->stats.genericcount ++;
3446 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
3447 /* Let the exception happen at runtime */
3451 if (cfg->disable_aot) {
3452 //printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
3453 acfg->stats.ocount++;
3454 mono_destroy_compile (cfg);
3458 /* Nullify patches which need no aot processing */
3459 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3460 switch (patch_info->type) {
3461 case MONO_PATCH_INFO_LABEL:
3462 case MONO_PATCH_INFO_BB:
3463 patch_info->type = MONO_PATCH_INFO_NONE;
3470 /* Collect method->token associations from the cfg */
3471 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
3474 * Check for absolute addresses.
3477 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3478 switch (patch_info->type) {
3479 case MONO_PATCH_INFO_ABS:
3480 /* unable to handle this */
3481 //printf ("Skip (abs addr): %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
3490 acfg->stats.abscount++;
3491 mono_destroy_compile (cfg);
3496 * Check for wrapper methods we can't encode.
3499 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3500 if ((patch_info->type == MONO_PATCH_INFO_METHODCONST) || (patch_info->type == MONO_PATCH_INFO_METHOD)) {
3501 switch (patch_info->data.method->wrapper_type) {
3502 case MONO_WRAPPER_NONE:
3503 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
3504 case MONO_WRAPPER_XDOMAIN_INVOKE:
3505 case MONO_WRAPPER_STFLD:
3506 case MONO_WRAPPER_LDFLD:
3507 case MONO_WRAPPER_LDFLDA:
3508 case MONO_WRAPPER_LDFLD_REMOTE:
3509 case MONO_WRAPPER_STFLD_REMOTE:
3510 case MONO_WRAPPER_STELEMREF:
3511 case MONO_WRAPPER_ISINST:
3512 case MONO_WRAPPER_PROXY_ISINST:
3513 case MONO_WRAPPER_ALLOC:
3514 case MONO_WRAPPER_REMOTING_INVOKE:
3515 case MONO_WRAPPER_STATIC_RGCTX_INVOKE:
3518 /* unable to handle this */
3519 //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));
3523 } else if (patch_info->type == MONO_PATCH_INFO_RGCTX_FETCH) {
3524 MonoJumpInfo *child = patch_info->data.rgctx_entry->data;
3526 if (child->type == MONO_PATCH_INFO_METHODCONST) {
3527 switch (child->data.method->wrapper_type) {
3528 case MONO_WRAPPER_NONE:
3529 case MONO_WRAPPER_STATIC_RGCTX_INVOKE:
3539 acfg->stats.wrappercount++;
3540 mono_destroy_compile (cfg);
3545 * Check for methods/klasses we can't encode.
3548 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3549 switch (patch_info->type) {
3550 case MONO_PATCH_INFO_METHOD:
3551 case MONO_PATCH_INFO_METHODCONST:
3552 if (patch_info->data.method->wrapper_type)
3554 if (!patch_info->data.method->token) {
3555 /* The method is part of a constructed type like Int[,].Set (). */
3556 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method))
3559 if (patch_info->data.method->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method)) {
3561 * encode_method_ref () can handle this method if it is not generic
3562 * and its class can be encoded.
3564 if (!g_hash_table_lookup (acfg->token_info_hash, patch_info->data.method->klass) || mono_method_get_context (patch_info->data.method)->method_inst) {
3565 /* FIXME: Can't encode these */
3566 //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));
3571 case MONO_PATCH_INFO_VTABLE:
3572 case MONO_PATCH_INFO_CLASS_INIT:
3573 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3574 case MONO_PATCH_INFO_CLASS:
3575 case MONO_PATCH_INFO_IID:
3576 case MONO_PATCH_INFO_ADJUSTED_IID:
3577 if (!patch_info->data.klass->type_token)
3578 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))
3587 acfg->stats.ocount++;
3588 mono_destroy_compile (cfg);
3592 /* Determine whenever the method has GOT slots */
3593 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3594 switch (patch_info->type) {
3595 case MONO_PATCH_INFO_GOT_OFFSET:
3596 case MONO_PATCH_INFO_NONE:
3598 case MONO_PATCH_INFO_IMAGE:
3599 /* The assembly is stored in GOT slot 0 */
3600 if (patch_info->data.image != acfg->image)
3601 cfg->has_got_slots = TRUE;
3604 if (!is_plt_patch (patch_info))
3605 cfg->has_got_slots = TRUE;
3610 if (!cfg->has_got_slots)
3611 acfg->stats.methods_without_got_slots ++;
3613 /* Make a copy of the patch info which is in the mempool */
3615 MonoJumpInfo *patches = NULL, *patches_end = NULL;
3617 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
3618 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
3621 patches = new_patch_info;
3623 patches_end->next = new_patch_info;
3624 patches_end = new_patch_info;
3626 cfg->patch_info = patches;
3629 /* Free some fields used by cfg to conserve memory */
3630 mono_mempool_destroy (cfg->mempool);
3631 cfg->mempool = NULL;
3632 g_free (cfg->varinfo);
3633 cfg->varinfo = NULL;
3637 mono_regstate_free (cfg->rs);
3641 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
3643 acfg->cfgs [index] = cfg;
3645 g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
3647 acfg->stats.ccount++;
3651 load_profile_files (MonoAotCompile *acfg)
3655 int file_index, res, method_index, i;
3662 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);
3664 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR)) {
3669 infile = fopen (tmp, "r");
3672 printf ("Using profile data file '%s'\n", tmp);
3677 res = fscanf (infile, "%32s\n", ver);
3678 if ((res != 1) || strcmp (ver, "#VER:1") != 0) {
3679 printf ("Profile file has wrong version or invalid.\n");
3685 res = fscanf (infile, "%d\n", &token);
3689 method_index = mono_metadata_token_index (token) - 1;
3691 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index)))
3692 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
3697 /* Add missing methods */
3699 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
3700 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
3701 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (i));
3703 unordered = g_list_reverse (unordered);
3704 if (acfg->method_order)
3705 g_list_last (acfg->method_order)->next = unordered;
3707 acfg->method_order = unordered;
3713 * Collect all patches which have shared GOT entries and alloc entries for them. The
3714 * rest will get entries allocated during emit_code ().
3717 alloc_got_slots (MonoAotCompile *acfg)
3723 /* Slot 0 is reserved for the address of the current assembly */
3724 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
3725 ji->type = MONO_PATCH_INFO_IMAGE;
3726 ji->data.image = acfg->image;
3728 get_shared_got_offset (acfg, ji);
3730 for (l = acfg->method_order; l != NULL; l = l->next) {
3731 i = GPOINTER_TO_UINT (l->data);
3733 if (acfg->cfgs [i]) {
3734 MonoCompile *cfg = acfg->cfgs [i];
3736 for (ji = cfg->patch_info; ji; ji = ji->next) {
3737 if (is_shared_got_patch (ji))
3738 get_shared_got_offset (acfg, ji);
3745 emit_code (MonoAotCompile *acfg)
3751 symbol = g_strdup_printf ("methods");
3752 emit_section_change (acfg, ".text", 0);
3753 emit_global (acfg, symbol, TRUE);
3754 emit_alignment (acfg, 8);
3755 emit_label (acfg, symbol);
3758 for (l = acfg->method_order; l != NULL; l = l->next) {
3759 i = GPOINTER_TO_UINT (l->data);
3762 emit_method_code (acfg, acfg->cfgs [i]);
3765 symbol = g_strdup_printf ("methods_end");
3766 emit_section_change (acfg, ".text", 0);
3767 emit_global (acfg, symbol, FALSE);
3768 emit_alignment (acfg, 8);
3769 emit_label (acfg, symbol);
3772 symbol = g_strdup_printf ("method_offsets");
3773 emit_section_change (acfg, ".text", 1);
3774 emit_global (acfg, symbol, FALSE);
3775 emit_alignment (acfg, 8);
3776 emit_label (acfg, symbol);
3779 for (i = 0; i < acfg->nmethods; ++i) {
3780 if (acfg->cfgs [i]) {
3781 symbol = g_strdup_printf (".Lm_%x", i);
3782 emit_symbol_diff (acfg, symbol, "methods", 0);
3785 emit_int32 (acfg, 0xffffffff);
3792 emit_info (MonoAotCompile *acfg)
3798 /* Emit method info */
3799 symbol = g_strdup_printf ("method_info");
3800 emit_section_change (acfg, ".text", 1);
3801 emit_global (acfg, symbol, FALSE);
3802 emit_alignment (acfg, 8);
3803 emit_label (acfg, symbol);
3806 /* To reduce size of generated assembly code */
3807 symbol = g_strdup_printf ("mi");
3808 emit_label (acfg, symbol);
3811 for (l = acfg->method_order; l != NULL; l = l->next) {
3812 i = GPOINTER_TO_UINT (l->data);
3815 emit_method_info (acfg, acfg->cfgs [i]);
3818 symbol = g_strdup_printf ("method_info_offsets");
3819 emit_section_change (acfg, ".text", 1);
3820 emit_global (acfg, symbol, FALSE);
3821 emit_alignment (acfg, 8);
3822 emit_label (acfg, symbol);
3825 for (i = 0; i < acfg->nmethods; ++i) {
3826 if (acfg->cfgs [i]) {
3827 symbol = g_strdup_printf (".Lm_%x_p", i);
3828 emit_symbol_diff (acfg, symbol, "mi", 0);
3831 emit_int32 (acfg, 0);
3838 emit_wrapper_info (MonoAotCompile *acfg)
3844 /* Emit method info */
3845 symbol = g_strdup_printf ("wrapper_info");
3846 emit_section_change (acfg, ".text", 1);
3847 emit_global (acfg, symbol, FALSE);
3848 emit_alignment (acfg, 8);
3849 emit_label (acfg, symbol);
3852 if (!acfg->aot_opts.full_aot)
3855 for (i = 0; i < acfg->nmethods; ++i) {
3856 MonoCompile *cfg = acfg->cfgs [i];
3859 if (!cfg || !cfg->orig_method->wrapper_type)
3862 method = cfg->orig_method;
3863 index = get_method_index (acfg, method);
3865 // FIXME: Optimize disk usage and lookup speed
3866 if (method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE) {
3867 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
3868 name = g_strdup_printf ("(wrapper runtime-invoke):%s (%s)", method->name, tmpsig);
3871 name = mono_method_full_name (cfg->orig_method, TRUE);
3873 emit_string (acfg, name);
3874 emit_alignment (acfg, 4);
3875 emit_int32 (acfg, index);
3878 emit_byte (acfg, 0);
3884 emit_method_order (MonoAotCompile *acfg)
3890 symbol = g_strdup_printf ("method_order");
3891 emit_section_change (acfg, ".text", 1);
3892 emit_global (acfg, symbol, FALSE);
3893 emit_alignment (acfg, 8);
3894 emit_label (acfg, symbol);
3897 /* First emit an index table */
3900 for (l = acfg->method_order; l != NULL; l = l->next) {
3901 i = GPOINTER_TO_UINT (l->data);
3903 if (acfg->cfgs [i]) {
3904 if ((index % 1024) == 0) {
3905 emit_int32 (acfg, i);
3913 emit_int32 (acfg, 0xffffff);
3915 /* Then emit the whole method order */
3916 for (l = acfg->method_order; l != NULL; l = l->next) {
3917 i = GPOINTER_TO_UINT (l->data);
3919 if (acfg->cfgs [i]) {
3920 emit_int32 (acfg, i);
3925 symbol = g_strdup_printf ("method_order_end");
3926 emit_section_change (acfg, ".text", 1);
3927 emit_global (acfg, symbol, FALSE);
3928 emit_label (acfg, symbol);
3933 emit_exception_info (MonoAotCompile *acfg)
3938 symbol = g_strdup_printf ("ex_info");
3939 emit_section_change (acfg, ".text", 1);
3940 emit_global (acfg, symbol, FALSE);
3941 emit_alignment (acfg, 8);
3942 emit_label (acfg, symbol);
3945 /* To reduce size of generated assembly */
3946 symbol = g_strdup_printf ("ex");
3947 emit_label (acfg, symbol);
3950 for (i = 0; i < acfg->nmethods; ++i) {
3952 emit_exception_debug_info (acfg, acfg->cfgs [i]);
3955 symbol = g_strdup_printf ("ex_info_offsets");
3956 emit_section_change (acfg, ".text", 1);
3957 emit_global (acfg, symbol, FALSE);
3958 emit_alignment (acfg, 8);
3959 emit_label (acfg, symbol);
3962 for (i = 0; i < acfg->nmethods; ++i) {
3963 if (acfg->cfgs [i]) {
3964 symbol = g_strdup_printf (".Le_%x_p", i);
3965 emit_symbol_diff (acfg, symbol, "ex", 0);
3968 emit_int32 (acfg, 0);
3975 emit_class_info (MonoAotCompile *acfg)
3980 symbol = g_strdup_printf ("class_info");
3981 emit_section_change (acfg, ".text", 1);
3982 emit_global (acfg, symbol, FALSE);
3983 emit_alignment (acfg, 8);
3984 emit_label (acfg, symbol);
3987 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
3988 emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
3990 symbol = g_strdup_printf ("class_info_offsets");
3991 emit_section_change (acfg, ".text", 1);
3992 emit_global (acfg, symbol, FALSE);
3993 emit_alignment (acfg, 8);
3994 emit_label (acfg, symbol);
3997 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
3998 symbol = g_strdup_printf (".LK_I_%x", i);
3999 emit_symbol_diff (acfg, symbol, "class_info", 0);
4005 typedef struct ClassNameTableEntry {
4006 guint32 token, index;
4007 struct ClassNameTableEntry *next;
4008 } ClassNameTableEntry;
4011 emit_class_name_table (MonoAotCompile *acfg)
4014 guint32 token, hash;
4019 ClassNameTableEntry *entry, *new_entry;
4022 * Construct a chained hash table for mapping class names to typedef tokens.
4024 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
4025 table = g_ptr_array_sized_new (table_size);
4026 for (i = 0; i < table_size; ++i)
4027 g_ptr_array_add (table, NULL);
4028 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
4029 token = MONO_TOKEN_TYPE_DEF | (i + 1);
4030 klass = mono_class_get (acfg->image, token);
4031 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
4032 hash = g_str_hash (full_name) % table_size;
4035 /* FIXME: Allocate from the mempool */
4036 new_entry = g_new0 (ClassNameTableEntry, 1);
4037 new_entry->token = token;
4039 entry = g_ptr_array_index (table, hash);
4040 if (entry == NULL) {
4041 new_entry->index = hash;
4042 g_ptr_array_index (table, hash) = new_entry;
4045 entry = entry->next;
4047 entry->next = new_entry;
4048 new_entry->index = table->len;
4049 g_ptr_array_add (table, new_entry);
4053 /* Emit the table */
4054 symbol = g_strdup_printf ("class_name_table");
4055 emit_section_change (acfg, ".text", 0);
4056 emit_global (acfg, symbol, FALSE);
4057 emit_alignment (acfg, 8);
4058 emit_label (acfg, symbol);
4061 /* FIXME: Optimize memory usage */
4062 g_assert (table_size < 65000);
4063 emit_int16 (acfg, table_size);
4064 g_assert (table->len < 65000);
4065 for (i = 0; i < table->len; ++i) {
4066 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
4068 if (entry == NULL) {
4069 emit_int16 (acfg, 0);
4070 emit_int16 (acfg, 0);
4072 emit_int16 (acfg, mono_metadata_token_index (entry->token));
4074 emit_int16 (acfg, entry->next->index);
4076 emit_int16 (acfg, 0);
4082 emit_image_table (MonoAotCompile *acfg)
4088 * The image table is small but referenced in a lot of places.
4089 * So we emit it at once, and reference its elements by an index.
4092 symbol = g_strdup_printf ("mono_image_table");
4093 emit_section_change (acfg, ".text", 1);
4094 emit_global (acfg, symbol, FALSE);
4095 emit_alignment (acfg, 8);
4096 emit_label (acfg, symbol);
4099 emit_int32 (acfg, acfg->image_table->len);
4100 for (i = 0; i < acfg->image_table->len; i++) {
4101 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
4102 MonoAssemblyName *aname = &image->assembly->aname;
4104 /* FIXME: Support multi-module assemblies */
4105 g_assert (image->assembly->image == image);
4107 emit_string (acfg, image->assembly_name);
4108 emit_string (acfg, image->guid);
4109 emit_string (acfg, aname->culture ? aname->culture : "");
4110 emit_string (acfg, (const char*)aname->public_key_token);
4112 emit_alignment (acfg, 8);
4113 emit_int32 (acfg, aname->flags);
4114 emit_int32 (acfg, aname->major);
4115 emit_int32 (acfg, aname->minor);
4116 emit_int32 (acfg, aname->build);
4117 emit_int32 (acfg, aname->revision);
4122 emit_got_info (MonoAotCompile *acfg)
4127 guint32 *got_info_offsets;
4131 * - optimize offsets table.
4132 * - reduce number of exported symbols.
4133 * - emit info for a klass only once.
4134 * - determine when a method uses a GOT slot which is guaranteed to be already
4136 * - clean up and document the code.
4137 * - use String.Empty in class libs.
4140 /* Encode info required to decode shared GOT entries */
4141 buf_size = acfg->shared_patches->len * 64;
4142 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
4143 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->shared_patches->len * sizeof (guint32));
4144 for (i = 0; i < acfg->shared_patches->len; ++i) {
4145 MonoJumpInfo *ji = g_ptr_array_index (acfg->shared_patches, i);
4147 /* No need to encode the patch type */
4148 got_info_offsets [i] = p - buf;
4149 encode_patch (acfg, ji, p, &p);
4152 g_assert (p - buf <= buf_size);
4154 acfg->stats.got_info_size = p - buf;
4156 /* Emit got_info table */
4157 symbol = g_strdup_printf ("got_info");
4158 emit_section_change (acfg, ".text", 1);
4159 emit_global (acfg, symbol, FALSE);
4160 emit_alignment (acfg, 8);
4161 emit_label (acfg, symbol);
4164 emit_bytes (acfg, buf, p - buf);
4166 /* Emit got_info_offsets table */
4167 symbol = g_strdup_printf ("got_info_offsets");
4168 emit_section_change (acfg, ".text", 1);
4169 emit_global (acfg, symbol, FALSE);
4170 emit_alignment (acfg, 8);
4171 emit_label (acfg, symbol);
4174 for (i = 0; i < acfg->shared_patches->len; ++i)
4175 emit_int32 (acfg, got_info_offsets [i]);
4177 acfg->stats.got_info_offsets_size = acfg->shared_patches->len * 4;
4181 emit_got (MonoAotCompile *acfg)
4185 /* Don't make GOT global so accesses to it don't need relocations */
4186 symbol = g_strdup_printf ("got");
4187 emit_section_change (acfg, ".bss", 1);
4188 emit_alignment (acfg, 8);
4189 emit_label (acfg, symbol);
4190 if ((acfg->got_offset + acfg->num_trampoline_got_entries) > 0)
4191 emit_zero_bytes (acfg, (int)((acfg->got_offset + acfg->num_trampoline_got_entries) * sizeof (gpointer)));
4194 symbol = g_strdup_printf ("got_addr");
4195 emit_section_change (acfg, ".data", 1);
4196 emit_global (acfg, symbol, FALSE);
4197 emit_alignment (acfg, 8);
4198 emit_label (acfg, symbol);
4199 emit_pointer (acfg, "got");
4202 symbol = g_strdup_printf ("got_size");
4203 emit_section_change (acfg, ".data", 1);
4204 emit_global (acfg, symbol, FALSE);
4205 emit_alignment (acfg, 8);
4206 emit_label (acfg, symbol);
4207 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
4212 emit_globals (MonoAotCompile *acfg)
4216 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
4218 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
4220 opts_str = g_strdup_printf ("%d", acfg->opts);
4221 emit_string_symbol (acfg, "mono_aot_opt_flags", opts_str);
4224 emit_string_symbol (acfg, "mono_aot_full_aot", acfg->aot_opts.full_aot ? "TRUE" : "FALSE");
4226 if (acfg->aot_opts.bind_to_runtime_version)
4227 emit_string_symbol (acfg, "mono_runtime_version", FULL_VERSION);
4229 emit_string_symbol (acfg, "mono_runtime_version", "");
4232 * Some platforms like the iphone have no working dlsym (). To work around this,
4233 * we create an ELF ctor function which will be invoked by dlopen, and which
4234 * will call a function in the AOT loader to register the symbols used by the
4236 * When static linking, we emit a global which will point to the symbol table.
4238 if (acfg->aot_opts.no_dlsym) {
4242 if (acfg->aot_opts.static_link)
4243 /* Emit a string holding the assembly name */
4244 emit_string_symbol (acfg, "mono_aot_assembly_name", acfg->image->assembly->aname.name);
4246 /* Emit the names */
4247 for (i = 0; i < acfg->globals->len; ++i) {
4248 char *name = g_ptr_array_index (acfg->globals, i);
4250 symbol = g_strdup_printf ("name_%d", i);
4251 emit_section_change (acfg, ".text", 1);
4252 emit_label (acfg, symbol);
4253 emit_string (acfg, name);
4257 /* Emit the globals table */
4258 symbol = g_strdup_printf ("globals");
4259 emit_section_change (acfg, ".data", 0);
4260 /* This is not a global, since it is accessed by the init function */
4261 emit_alignment (acfg, 8);
4262 emit_label (acfg, symbol);
4264 for (i = 0; i < acfg->globals->len; ++i) {
4265 char *name = g_ptr_array_index (acfg->globals, i);
4267 symbol = g_strdup_printf ("name_%d", i);
4268 emit_pointer (acfg, symbol);
4271 symbol = g_strdup_printf ("%s", name);
4272 emit_pointer (acfg, symbol);
4275 /* Null terminate the table */
4276 emit_pointer (acfg, NULL);
4277 emit_pointer (acfg, NULL);
4279 if (acfg->aot_opts.static_link) {
4283 * Emit a global symbol which can be passed by an embedding app to
4284 * mono_aot_register_module ().
4286 #if defined(__MACH__)
4287 symbol = g_strdup_printf ("_mono_aot_module_%s_info", acfg->image->assembly->aname.name);
4289 symbol = g_strdup_printf ("mono_aot_module_%s_info", acfg->image->assembly->aname.name);
4292 /* Get rid of characters which cannot occur in symbols */
4294 for (p = symbol; *p; ++p) {
4295 if (!(isalnum (*p) || *p == '_'))
4298 acfg->static_linking_symbol = g_strdup (symbol);
4299 emit_global_inner (acfg, symbol, FALSE);
4300 emit_alignment (acfg, 8);
4301 emit_label (acfg, symbol);
4302 emit_pointer (acfg, "globals");
4304 symbol = g_strdup_printf ("init_%s", acfg->image->assembly->aname.name);
4305 emit_section_change (acfg, ".text", 1);
4306 emit_alignment (acfg, 8);
4307 emit_label (acfg, symbol);
4308 #ifdef USE_BIN_WRITER
4309 g_assert_not_reached ();
4312 fprintf (acfg->fp, "leaq globals(%%rip), %%rdi\n");
4313 fprintf (acfg->fp, "call mono_aot_register_globals@PLT\n");
4314 fprintf (acfg->fp, "ret\n");
4315 fprintf (acfg->fp, ".section .ctors,\"aw\",@progbits\n");
4316 emit_alignment (acfg, 8);
4317 emit_pointer (acfg, symbol);
4318 #elif defined(__arm__) && defined(__MACH__)
4320 fprintf (acfg->fp, ".text\n");
4321 fprintf (acfg->fp, ".align 3\n");
4323 fprintf (acfg->fp, "ldr r0, .L5\n");
4324 fprintf (acfg->fp, ".LPIC0:\n");
4325 fprintf (acfg->fp, "add r0, pc, r0\n");
4326 fprintf (acfg->fp, "ldr r0, [r0]\n");
4327 fprintf (acfg->fp, "b _mono_aot_register_globals@PLT\n");
4328 fprintf (acfg->fp, ".align 2\n");
4330 fprintf (acfg->fp, ".L5:\n");
4331 fprintf (acfg->fp, ".long globals_ptr-(.LPIC0+8)\n");
4333 fprintf (acfg->fp, ".data\n");
4334 fprintf (acfg->fp, ".align 2\n");
4335 fprintf (acfg->fp, "globals_ptr:\n");
4336 fprintf (acfg->fp, ".long globals\n");
4338 fprintf (acfg->fp, ".mod_init_func\n");
4339 fprintf (acfg->fp, ".align 2\n");
4340 fprintf (acfg->fp, ".long %s@target1\n", symbol);
4342 #elif defined(__arm__)
4344 * Taken from gcc generated code for:
4346 * void foo () { bar (&i); }
4347 * gcc --shared -fPIC -O2
4349 fprintf (acfg->fp, "ldr r3, .L5\n");
4350 fprintf (acfg->fp, "ldr r0, .L5+4\n");
4351 fprintf (acfg->fp, ".LPIC0:\n");
4352 fprintf (acfg->fp, "add r3, pc, r3\n");
4353 fprintf (acfg->fp, "add r0, r3, r0\n");
4354 fprintf (acfg->fp, "b mono_aot_register_globals(PLT)\n");
4356 fprintf (acfg->fp, ".L5:\n");
4357 fprintf (acfg->fp, ".word _GLOBAL_OFFSET_TABLE_-(.LPIC0+8)\n");
4358 fprintf (acfg->fp, ".word globals(GOTOFF)\n");
4360 fprintf (acfg->fp, ".section .init_array,\"aw\",%%init_array\n");
4361 fprintf (acfg->fp, ".align 2\n");
4362 fprintf (acfg->fp, ".word %s(target1)\n", symbol);
4364 g_assert_not_reached ();
4373 acfg_free (MonoAotCompile *acfg)
4377 for (i = 0; i < acfg->nmethods; ++i)
4379 g_free (acfg->cfgs [i]);
4380 g_free (acfg->cfgs);
4381 g_free (acfg->method_got_offsets);
4382 g_free (acfg->static_linking_symbol);
4383 g_ptr_array_free (acfg->methods, TRUE);
4384 g_ptr_array_free (acfg->shared_patches, TRUE);
4385 g_ptr_array_free (acfg->image_table, TRUE);
4386 g_ptr_array_free (acfg->globals, TRUE);
4387 g_hash_table_destroy (acfg->method_indexes);
4388 g_hash_table_destroy (acfg->plt_offset_to_patch);
4389 g_hash_table_destroy (acfg->patch_to_plt_offset);
4390 g_hash_table_destroy (acfg->patch_to_shared_got_offset);
4391 g_hash_table_destroy (acfg->method_to_cfg);
4392 g_hash_table_destroy (acfg->token_info_hash);
4393 g_hash_table_destroy (acfg->image_hash);
4394 mono_mempool_destroy (acfg->mempool);
4399 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
4401 MonoImage *image = ass->image;
4404 MonoAotCompile *acfg;
4406 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
4408 acfg = g_new0 (MonoAotCompile, 1);
4409 acfg->methods = g_ptr_array_new ();
4410 acfg->method_indexes = g_hash_table_new (NULL, NULL);
4411 acfg->plt_offset_to_patch = g_hash_table_new (NULL, NULL);
4412 acfg->patch_to_plt_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4413 acfg->patch_to_shared_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
4414 acfg->shared_patches = g_ptr_array_new ();
4415 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
4416 acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, g_free);
4417 acfg->image_hash = g_hash_table_new (NULL, NULL);
4418 acfg->image_table = g_ptr_array_new ();
4419 acfg->globals = g_ptr_array_new ();
4420 acfg->image = image;
4422 acfg->mempool = mono_mempool_new ();
4424 mono_aot_parse_options (aot_options, &acfg->aot_opts);
4426 load_profile_files (acfg);
4430 acfg->num_aot_trampolines = acfg->aot_opts.full_aot ? 10240 : 0;
4432 acfg->method_index = 1;
4434 /* Collect methods */
4435 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
4437 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
4439 method = mono_get_method (acfg->image, token, NULL);
4441 if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4442 /* Compile the wrapper instead */
4443 /* We do this here instead of add_wrappers () because it is easy to do it here */
4444 MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
4448 /* Since we add the normal methods first, their index will be equal to their zero based token index */
4449 add_method_with_index (acfg, method, i);
4450 acfg->method_index ++;
4453 if (acfg->aot_opts.full_aot)
4454 add_wrappers (acfg);
4456 acfg->nmethods = acfg->methods->len + 1;
4457 acfg->cfgs = g_new0 (MonoCompile*, acfg->nmethods + 32);
4458 acfg->method_got_offsets = g_new0 (guint32, acfg->nmethods + 32);
4460 /* PLT offset 0 is reserved for the PLT trampoline */
4461 acfg->plt_offset = 1;
4463 /* Compile methods */
4464 for (i = 0; i < acfg->methods->len; ++i) {
4465 compile_method (acfg, g_ptr_array_index (acfg->methods, i));
4468 alloc_got_slots (acfg);
4474 emit_wrapper_info (acfg);
4476 emit_method_order (acfg);
4478 emit_trampolines (acfg);
4480 emit_class_name_table (acfg);
4482 emit_got_info (acfg);
4484 emit_exception_info (acfg);
4486 emit_class_info (acfg);
4490 emit_image_table (acfg);
4494 emit_globals (acfg);
4496 symbol = g_strdup_printf ("mem_end");
4497 emit_section_change (acfg, ".text", 1);
4498 emit_global (acfg, symbol, FALSE);
4499 emit_alignment (acfg, 8);
4500 emit_label (acfg, symbol);
4503 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)));
4505 res = emit_writeout (acfg);
4511 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);
4512 if (acfg->stats.genericcount)
4513 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
4514 if (acfg->stats.abscount)
4515 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
4516 if (acfg->stats.wrappercount)
4517 printf ("%d methods contain wrapper references (%d%%)\n", acfg->stats.wrappercount, acfg->stats.mcount ? (acfg->stats.wrappercount * 100) / acfg->stats.mcount : 100);
4518 if (acfg->stats.lmfcount)
4519 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
4520 if (acfg->stats.ocount)
4521 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
4522 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);
4523 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
4525 printf ("GOT slot distribution:\n");
4526 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
4527 if (acfg->stats.got_slot_types [i])
4528 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
4540 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)