Merge pull request #1857 from slluis/fix-assembly-resolver
[mono.git] / mono / mini / aot-compiler.c
index dab91d7944204f45f10a02fc350175889da6e565..933ecfaf395cab7cbbaeced533c87631f4669cc7 100644 (file)
@@ -99,7 +99,7 @@ typedef struct MonoAotOptions {
        gboolean write_symbols;
        gboolean metadata_only;
        gboolean bind_to_runtime_version;
-       gboolean full_aot;
+       MonoAotMode mode;
        gboolean no_dlsym;
        gboolean static_link;
        gboolean asm_only;
@@ -130,6 +130,7 @@ typedef struct MonoAotOptions {
        gboolean autoreg;
        char *mtriple;
        char *llvm_path;
+       char *temp_path;
        char *instances_logfile_path;
        char *logfile;
        gboolean dump_json;
@@ -360,52 +361,52 @@ report_loader_error (MonoAotCompile *acfg, MonoError *error, const char *format,
 static inline void
 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
 {
-       img_writer_emit_section_change (acfg->w, section_name, subsection_index);
+       mono_img_writer_emit_section_change (acfg->w, section_name, subsection_index);
 }
 
 static inline void
 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func) 
 { 
-       img_writer_emit_local_symbol (acfg->w, name, end_label, func); 
+       mono_img_writer_emit_local_symbol (acfg->w, name, end_label, func); 
 }
 
 static inline void
 emit_label (MonoAotCompile *acfg, const char *name) 
 { 
-       img_writer_emit_label (acfg->w, name); 
+       mono_img_writer_emit_label (acfg->w, name); 
 }
 
 static inline void
 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size) 
 { 
-       img_writer_emit_bytes (acfg->w, buf, size); 
+       mono_img_writer_emit_bytes (acfg->w, buf, size); 
 }
 
 static inline void
 emit_string (MonoAotCompile *acfg, const char *value) 
 { 
-       img_writer_emit_string (acfg->w, value); 
+       mono_img_writer_emit_string (acfg->w, value); 
 }
 
 static inline void
 emit_line (MonoAotCompile *acfg) 
 { 
-       img_writer_emit_line (acfg->w); 
+       mono_img_writer_emit_line (acfg->w); 
 }
 
 static inline void
 emit_alignment (MonoAotCompile *acfg, int size)
 { 
-       img_writer_emit_alignment (acfg->w, size);
+       mono_img_writer_emit_alignment (acfg->w, size);
 }
 
 static inline void
 emit_alignment_code (MonoAotCompile *acfg, int size)
 {
        if (acfg->align_pad_value)
-               img_writer_emit_alignment_fill (acfg->w, size, acfg->align_pad_value);
+               mono_img_writer_emit_alignment_fill (acfg->w, size, acfg->align_pad_value);
        else
-               img_writer_emit_alignment (acfg->w, size);
+               mono_img_writer_emit_alignment (acfg->w, size);
 }
 
 static inline void
@@ -432,7 +433,7 @@ emit_padding (MonoAotCompile *acfg, int size)
 static inline void
 emit_pointer (MonoAotCompile *acfg, const char *target) 
 { 
-       img_writer_emit_pointer (acfg->w, target); 
+       mono_img_writer_emit_pointer (acfg->w, target); 
 }
 
 static inline void
@@ -440,55 +441,55 @@ emit_pointer_2 (MonoAotCompile *acfg, const char *prefix, const char *target)
 { 
        if (prefix [0] != '\0') {
                char *s = g_strdup_printf ("%s%s", prefix, target);
-               img_writer_emit_pointer (acfg->w, s);
+               mono_img_writer_emit_pointer (acfg->w, s);
                g_free (s);
        } else {
-               img_writer_emit_pointer (acfg->w, target);
+               mono_img_writer_emit_pointer (acfg->w, target);
        }
 }
 
 static inline void
 emit_int16 (MonoAotCompile *acfg, int value) 
 { 
-       img_writer_emit_int16 (acfg->w, value); 
+       mono_img_writer_emit_int16 (acfg->w, value); 
 }
 
 static inline void
 emit_int32 (MonoAotCompile *acfg, int value) 
 { 
-       img_writer_emit_int32 (acfg->w, value); 
+       mono_img_writer_emit_int32 (acfg->w, value); 
 }
 
 static inline void
 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset) 
 { 
-       img_writer_emit_symbol_diff (acfg->w, end, start, offset); 
+       mono_img_writer_emit_symbol_diff (acfg->w, end, start, offset); 
 }
 
 static inline void
 emit_zero_bytes (MonoAotCompile *acfg, int num) 
 { 
-       img_writer_emit_zero_bytes (acfg->w, num); 
+       mono_img_writer_emit_zero_bytes (acfg->w, num); 
 }
 
 static inline void
 emit_byte (MonoAotCompile *acfg, guint8 val) 
 { 
-       img_writer_emit_byte (acfg->w, val); 
+       mono_img_writer_emit_byte (acfg->w, val); 
 }
 
 #ifdef __native_client_codegen__
 static inline void
 emit_nacl_call_alignment (MonoAotCompile *acfg)
 {
-       img_writer_emit_nacl_call_alignment (acfg->w);
+       mono_img_writer_emit_nacl_call_alignment (acfg->w);
 }
 #endif
 
 static G_GNUC_UNUSED void
 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
 {
-       img_writer_emit_global (acfg->w, name, func);
+       mono_img_writer_emit_global (acfg->w, name, func);
 }
 
 static void
@@ -496,28 +497,28 @@ emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
 {
        if (acfg->aot_opts.no_dlsym) {
                g_ptr_array_add (acfg->globals, g_strdup (name));
-               img_writer_emit_local_symbol (acfg->w, name, NULL, func);
+               mono_img_writer_emit_local_symbol (acfg->w, name, NULL, func);
        } else {
-               img_writer_emit_global (acfg->w, name, func);
+               mono_img_writer_emit_global (acfg->w, name, func);
        }
 }
 
 static void
 emit_symbol_size (MonoAotCompile *acfg, const char *name, const char *end_label)
 {
-       img_writer_emit_symbol_size (acfg->w, name, end_label);
+       mono_img_writer_emit_symbol_size (acfg->w, name, end_label);
 }
 
 static void
 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
 {
-       img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
+       mono_img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
 #ifdef TARGET_MACH
        /* On apple, all symbols need to be aligned to avoid warnings from ld */
        emit_alignment (acfg, 4);
 #endif
-       img_writer_emit_label (acfg->w, name);
-       img_writer_emit_string (acfg->w, value);
+       mono_img_writer_emit_label (acfg->w, name);
+       mono_img_writer_emit_string (acfg->w, value);
 }
 
 static G_GNUC_UNUSED void
@@ -610,7 +611,7 @@ encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
 static void
 emit_unset_mode (MonoAotCompile *acfg)
 {
-       img_writer_emit_unset_mode (acfg->w);
+       mono_img_writer_emit_unset_mode (acfg->w);
 }
 
 static G_GNUC_UNUSED void
@@ -816,7 +817,7 @@ arch_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean extern
                code = buf;
                ARM_BL (code, 0);
 
-               img_writer_emit_reloc (acfg->w, R_ARM_CALL, target, -8);
+               mono_img_writer_emit_reloc (acfg->w, R_ARM_CALL, target, -8);
                emit_bytes (acfg, buf, 4);
        } else {
                emit_unset_mode (acfg);
@@ -878,8 +879,8 @@ arch_emit_direct_call (MonoAotCompile *acfg, const char *target, gboolean extern
  * arch_emit_got_offset:
  *
  *   The memory pointed to by CODE should hold native code for computing the GOT
- * address. Emit this code while patching it with the offset between code and
- * the GOT. CODE_SIZE is set to the number of bytes emitted.
+ * address (OP_LOAD_GOTADDR). Emit this code while patching it with the offset
+ * between code and the GOT. CODE_SIZE is set to the number of bytes emitted.
  */
 static void
 arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
@@ -920,14 +921,12 @@ arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
  * arch_emit_got_access:
  *
  *   The memory pointed to by CODE should hold native code for loading a GOT
- * slot. Emit this code while patching it so it accesses the GOT slot GOT_SLOT.
- * CODE_SIZE is set to the number of bytes emitted.
+ * slot (OP_AOTCONST/OP_GOT_ENTRY). Emit this code while patching it so it accesses the
+ * GOT slot GOT_SLOT. CODE_SIZE is set to the number of bytes emitted.
  */
 static void
-arch_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *code_size)
+arch_emit_got_access (MonoAotCompile *acfg, const char *got_symbol, guint8 *code, int got_slot, int *code_size)
 {
-       /* This needs to emit the same code as OP_AOTCONST */
-
 #ifdef TARGET_AMD64
        /* mov reg, got+offset(%rip) */
        if (acfg->llvm) {
@@ -942,11 +941,11 @@ arch_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *cod
                dreg = ((code [2] >> 3) & 0x7) + (rex_r ? 8 : 0);
 
                emit_unset_mode (acfg);
-               fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", acfg->got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
+               fprintf (acfg->fp, "mov %s+%d(%%rip), %s\n", got_symbol, (unsigned int) ((got_slot * sizeof (gpointer))), mono_arch_regname (dreg));
                *code_size = 7;
        } else {
                emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
-               emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
+               emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
                *code_size = mono_arch_get_patch_offset (code) + 4;
        }
 #elif defined(TARGET_X86)
@@ -955,7 +954,7 @@ arch_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *cod
        *code_size = mono_arch_get_patch_offset (code) + 4;
 #elif defined(TARGET_ARM)
        emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
-       emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
+       emit_symbol_diff (acfg, got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
        *code_size = mono_arch_get_patch_offset (code) + 4;
 #elif defined(TARGET_ARM64)
        emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
@@ -1000,7 +999,7 @@ arch_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int
        sprintf (symbol2, "L_OBJC_SELECTOR_REFERENCES_%d", index);
 
        emit_label (acfg, symbol1);
-       img_writer_emit_unset_mode (acfg->w);
+       mono_img_writer_emit_unset_mode (acfg->w);
        fprintf (acfg->fp, ".long %s-(%s+12)", symbol2, symbol1);
 
        *code_size = 12;
@@ -1015,20 +1014,22 @@ arch_emit_objc_selector_ref (MonoAotCompile *acfg, guint8 *code, int index, int
 /*
  * arch_emit_plt_entry:
  *
- *   Emit code for the PLT entry with index INDEX.
+ *   Emit code for the PLT entry.
+ * The plt entry should look like this:
+ * <indirect jump to GOT_SYMBOL + OFFSET>
+ * <INFO_OFFSET embedded into the instruction stream>
  */
 static void
-arch_emit_plt_entry (MonoAotCompile *acfg, int index)
+arch_emit_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
 {
 #if defined(TARGET_X86)
-               guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
 #if defined(__default_codegen__)
                /* jmp *<offset>(%ebx) */
                emit_byte (acfg, 0xff);
                emit_byte (acfg, 0xa3);
                emit_int32 (acfg, offset);
                /* Used by mono_aot_get_plt_info_offset */
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
 #elif defined(__native_client_codegen__)
                const guint8 kSizeOfNaClJmp = 11;
                guint8 bytes[kSizeOfNaClJmp];
@@ -1039,7 +1040,7 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
                /* four bytes of data, used by mono_arch_patch_plt_entry              */
                /* For Native Client, make this work with data embedded in push.      */
                emit_byte (acfg, 0x68);  /* hide data in a push */
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
                emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
 #endif /*__native_client_codegen__*/
 #elif defined(TARGET_AMD64)
@@ -1047,13 +1048,13 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
                if (acfg->use_bin_writer) {
                        emit_byte (acfg, '\xff');
                        emit_byte (acfg, '\x25');
-                       emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
+                       emit_symbol_diff (acfg, got_symbol, ".", offset - 4);
                } else {
                        emit_unset_mode (acfg);
-                       fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", acfg->got_symbol, (int)((acfg->plt_got_offset_base + index) * sizeof (gpointer)));
+                       fprintf (acfg->fp, "jmp *%s+%d(%%rip)\n", got_symbol, offset);
                }
                /* Used by mono_aot_get_plt_info_offset */
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
                acfg->stats.plt_size += 10;
 #elif defined(__native_client_codegen__)
                guint8 buf [256];
@@ -1064,7 +1065,7 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
                emit_byte (acfg, '\x45');
                emit_byte (acfg, '\x8b');
                emit_byte (acfg, '\x1d');
-               emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
+               emit_symbol_diff (acfg, got_symbol, ".", offset - 4);
 
                amd64_jump_reg (code, AMD64_R11);
                /* This should be constant for the plt patch */
@@ -1073,7 +1074,7 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
 
                /* Hide data in a push imm32 so it passes validation */
                emit_byte (acfg, 0x68);  /* push */
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
                emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
 #endif /*__native_client_codegen__*/
 #elif defined(TARGET_ARM)
@@ -1084,14 +1085,12 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
                ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
                ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
                emit_bytes (acfg, buf, code - buf);
-               emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) - 4);
+               emit_symbol_diff (acfg, got_symbol, ".", offset - 4);
                /* Used by mono_aot_get_plt_info_offset */
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
 #elif defined(TARGET_ARM64)
-               arm64_emit_plt_entry (acfg, index);
+               arm64_emit_plt_entry (acfg, got_symbol, offset, info_offset);
 #elif defined(TARGET_POWERPC)
-               guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
-
                /* The GOT address is guaranteed to be in r30 by OP_LOAD_GOTADDR */
                g_assert (!acfg->use_bin_writer);
                emit_unset_mode (acfg);
@@ -1105,24 +1104,22 @@ arch_emit_plt_entry (MonoAotCompile *acfg, int index)
 #endif
                fprintf (acfg->fp, "mtctr 11\n");
                fprintf (acfg->fp, "bctr\n");
-               emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+               emit_int32 (acfg, info_offset);
 #else
                g_assert_not_reached ();
 #endif
 }
 
+/*
+ * arch_emit_llvm_plt_entry:
+ *
+ *   Same as arch_emit_plt_entry, but handles calls from LLVM generated code.
+ * This is only needed on arm to handle thumb interop.
+ */
 static void
-arch_emit_llvm_plt_entry (MonoAotCompile *acfg, int index)
+arch_emit_llvm_plt_entry (MonoAotCompile *acfg, const char *got_symbol, int offset, int info_offset)
 {
 #if defined(TARGET_ARM)
-#if 0
-       /* LLVM calls the PLT entries using bl, so emit a stub */
-       /* FIXME: Too much overhead on every call */
-       fprintf (acfg->fp, ".thumb_func\n");
-       fprintf (acfg->fp, "bx pc\n");
-       fprintf (acfg->fp, "nop\n");
-       fprintf (acfg->fp, ".arm\n");
-#endif
        /* LLVM calls the PLT entries using bl, so these have to be thumb2 */
        /* The caller already transitioned to thumb */
        /* The code below should be 12 bytes long */
@@ -1139,8 +1136,8 @@ arch_emit_llvm_plt_entry (MonoAotCompile *acfg, int index)
        fprintf (acfg->fp, ".2byte 0x44fc\n");
        fprintf (acfg->fp, ".4byte 0xc000f8dc\n");
        fprintf (acfg->fp, ".2byte 0x4760\n");
-       emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) + 4);
-       emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+       emit_symbol_diff (acfg, got_symbol, ".", offset + 4);
+       emit_int32 (acfg, info_offset);
        emit_unset_mode (acfg);
        emit_set_arm_mode (acfg);
 #else
@@ -1597,7 +1594,7 @@ arch_emit_unbox_trampoline (MonoAotCompile *acfg, MonoCompile *cfg, MonoMethod *
                code = buf;
                ARM_B (code, 0);
 
-               img_writer_emit_reloc (acfg->w, R_ARM_JUMP24, call_target, -8);
+               mono_img_writer_emit_reloc (acfg->w, R_ARM_JUMP24, call_target, -8);
                emit_bytes (acfg, buf, 4);
        } else {
                if (acfg->thumb_mixed && cfg->compile_llvm)
@@ -2498,16 +2495,19 @@ encode_klass_ref_inner (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, gui
                encode_value (container ? 1 : 0, p, &p);
                if (container) {
                        encode_value (container->is_method, p, &p);
-                       g_assert (par->gshared_constraint == 0);
+                       g_assert (!par->gshared_constraint);
                        if (container->is_method)
                                encode_method_ref (acfg, container->owner.method, p, &p);
                        else
                                encode_klass_ref (acfg, container->owner.klass, p, &p);
                } else {
-                       encode_value (par->gshared_constraint, p, &p);
+                       encode_value (par->gshared_constraint ? 1 : 0, p, &p);
                        if (par->gshared_constraint) {
-                               const char *name = mono_generic_param_name (par);
+                               const char *name;
 
+                               encode_type (acfg, par->gshared_constraint, p, &p);
+
+                               name = mono_generic_param_name (par);
                                if (name) {
                                        int len = strlen (name);
 
@@ -3067,7 +3067,6 @@ is_plt_patch (MonoJumpInfo *patch_info)
        case MONO_PATCH_INFO_ICALL_ADDR:
        case MONO_PATCH_INFO_CLASS_INIT:
        case MONO_PATCH_INFO_RGCTX_FETCH:
-       case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
        case MONO_PATCH_INFO_MONITOR_ENTER:
        case MONO_PATCH_INFO_MONITOR_ENTER_V4:
        case MONO_PATCH_INFO_MONITOR_EXIT:
@@ -3212,6 +3211,16 @@ add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index, gboo
                g_ptr_array_add (acfg->extra_methods, method);
 }
 
+static gboolean
+prefer_gsharedvt_method (MonoAotCompile *acfg, MonoMethod *method)
+{
+       /* One instantiation with valuetypes is generated for each async method */
+       if (method->klass->image == mono_defaults.corlib && (!strcmp (method->klass->name, "AsyncMethodBuilderCore") || !strcmp (method->klass->name, "AsyncVoidMethodBuilder")))
+               return TRUE;
+       else
+               return FALSE;
+}
+
 static guint32
 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
 {
@@ -3254,6 +3263,9 @@ add_extra_method_with_depth (MonoAotCompile *acfg, MonoMethod *method, int depth
 {
        if (mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE))
                method = mini_get_shared_method (method);
+       else if ((acfg->opts & MONO_OPT_GSHAREDVT) && prefer_gsharedvt_method (acfg, method) && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE))
+               /* Use the gsharedvt version */
+               return;
 
        if (acfg->aot_opts.log_generics)
                aot_printf (acfg, "%*sAdding method %s.\n", depth, "", mono_method_full_name (method, TRUE));
@@ -3560,7 +3572,12 @@ add_wrappers (MonoAotCompile *acfg)
                        /* Managed Allocators */
                        nallocators = mono_gc_get_managed_allocator_types ();
                        for (i = 0; i < nallocators; ++i) {
-                               m = mono_gc_get_managed_allocator_by_type (i);
+                               m = mono_gc_get_managed_allocator_by_type (i, TRUE);
+                               if (m)
+                                       add_method (acfg, m);
+                       }
+                       for (i = 0; i < nallocators; ++i) {
+                               m = mono_gc_get_managed_allocator_by_type (i, FALSE);
                                if (m)
                                        add_method (acfg, m);
                        }
@@ -3656,8 +3673,18 @@ add_wrappers (MonoAotCompile *acfg)
                                for (j = 0; j < cattr->num_attrs; ++j)
                                        if (cattr->attrs [j].ctor && (!strcmp (cattr->attrs [j].ctor->klass->name, "MonoNativeFunctionWrapperAttribute") || !strcmp (cattr->attrs [j].ctor->klass->name, "UnmanagedFunctionPointerAttribute")))
                                                break;
-                               if (j < cattr->num_attrs)
-                                       add_method (acfg, mono_marshal_get_native_func_wrapper_aot (klass));
+                               if (j < cattr->num_attrs) {
+                                       MonoMethod *invoke;
+                                       MonoMethod *wrapper;
+                                       MonoMethod *del_invoke;
+
+                                       /* Add wrappers needed by mono_ftnptr_to_delegate () */
+                                       invoke = mono_get_delegate_invoke (klass);
+                                       wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
+                                       del_invoke = mono_marshal_get_delegate_invoke_internal (invoke, FALSE, TRUE, wrapper);
+                                       add_method (acfg, wrapper);
+                                       add_method (acfg, del_invoke);
+                               }
                        }
                } else if ((acfg->opts & MONO_OPT_GSHAREDVT) && klass->generic_container) {
                        MonoError error;
@@ -3973,13 +4000,19 @@ method_has_type_vars (MonoMethod *method)
        return FALSE;
 }
 
+static
+gboolean mono_aot_mode_is_full (MonoAotOptions *opts)
+{
+       return opts->mode == MONO_AOT_MODE_FULL;
+}
+
 static void add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth, const char *ref);
 
 static void
 add_generic_class (MonoAotCompile *acfg, MonoClass *klass, gboolean force, const char *ref)
 {
        /* This might lead to a huge code blowup so only do it if neccesary */
-       if (!acfg->aot_opts.full_aot && !force)
+       if (!mono_aot_mode_is_full (&acfg->aot_opts) && !force)
                return;
 
        add_generic_class_with_depth (acfg, klass, 0, ref);
@@ -4876,7 +4909,7 @@ emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, gui
 
                                        got_slot = get_got_offset (acfg, FALSE, patch_info);
 
-                                       arch_emit_got_access (acfg, code + i, got_slot, &code_size);
+                                       arch_emit_got_access (acfg, acfg->got_symbol, code + i, got_slot, &code_size);
                                        i += code_size - INST_LEN;
                                }
                                skip = TRUE;
@@ -4984,7 +5017,9 @@ get_debug_sym (MonoMethod *method, const char *prefix, GHashTable *cache)
        memcpy (name2, prefix, strlen (prefix));
        j = strlen (prefix);
        for (i = 0; i < len; ++i) {
-               if (isalnum (name1 [i])) {
+               if (i == 0 && name1 [0] >= '0' && name1 [0] <= '9') {
+                       name2 [j ++] = '_';
+               } else if (isalnum (name1 [i])) {
                        name2 [j ++] = name1 [i];
                } else if (name1 [i] == ' ' && name1 [i + 1] == '(' && name1 [i + 2] == ')') {
                        i += 2;
@@ -5231,7 +5266,6 @@ encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint
                encode_patch (acfg, entry->data, p, &p);
                break;
        }
-       case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
        case MONO_PATCH_INFO_MONITOR_ENTER:
        case MONO_PATCH_INFO_MONITOR_ENTER_V4:
        case MONO_PATCH_INFO_MONITOR_EXIT:
@@ -5288,6 +5322,8 @@ encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint
                encode_klass_ref (acfg, patch_info->data.virt_method->klass, p, &p);
                encode_method_ref (acfg, patch_info->data.virt_method->method, p, &p);
                break;
+       case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG:
+               break;
        default:
                g_warning ("unable to handle jump info %d", patch_info->type);
                g_assert_not_reached ();
@@ -5470,7 +5506,7 @@ emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg, gboolean stor
        }
 
        seq_points = cfg->seq_point_info;
-       seq_points_size = (store_seq_points)? seq_point_info_get_write_size (seq_points) : 0;
+       seq_points_size = (store_seq_points)? mono_seq_point_info_get_write_size (seq_points) : 0;
 
        buf_size = header->num_clauses * 256 + debug_info_size + 2048 + seq_points_size + cfg->gc_map_size;
 
@@ -5554,7 +5590,13 @@ emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg, gboolean stor
                        MonoJitExceptionInfo *ei = &jinfo->clauses [k];
 
                        encode_value (ei->flags, p, &p);
+#ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
+                       /* Not used for catch clauses */
+                       if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE)
+                               encode_value (ei->exvar_offset, p, &p);
+#else
                        encode_value (ei->exvar_offset, p, &p);
+#endif
 
                        if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
                                encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
@@ -5678,7 +5720,7 @@ emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg, gboolean stor
        }
 
        if (seq_points_size)
-               p += seq_point_info_write (seq_points, p);
+               p += mono_seq_point_info_write (seq_points, p);
 
        g_assert (debug_info_size < buf_size);
 
@@ -5839,9 +5881,6 @@ get_plt_entry_debug_sym (MonoAotCompile *acfg, MonoJumpInfo *ji, GHashTable *cac
        case MONO_PATCH_INFO_JIT_ICALL_ADDR:
                debug_sym = g_strdup_printf ("%s_jit_icall_native_%s", prefix, ji->data.name);
                break;
-       case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
-               debug_sym = g_strdup_printf ("%s_generic_class_init", prefix);
-               break;
        default:
                break;
        }
@@ -5913,7 +5952,7 @@ emit_plt (MonoAotCompile *acfg)
 
                emit_label (acfg, plt_entry->symbol);
 
-               arch_emit_plt_entry (acfg, i);
+               arch_emit_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
 
                if (debug_sym)
                        emit_symbol_size (acfg, debug_sym, ".");
@@ -5960,7 +5999,7 @@ emit_plt (MonoAotCompile *acfg)
                        if (acfg->llvm)
                                emit_global_inner (acfg, plt_entry->llvm_symbol, TRUE);
 
-                       arch_emit_llvm_plt_entry (acfg, i);
+                       arch_emit_llvm_plt_entry (acfg, acfg->got_symbol, (acfg->plt_got_offset_base + i) * sizeof (gpointer), acfg->plt_got_info_offsets [i]);
 
                        if (debug_sym) {
                                emit_symbol_size (acfg, debug_sym, ".");
@@ -6105,7 +6144,7 @@ emit_trampolines (MonoAotCompile *acfg)
        int tramp_type;
 #endif
 
-       if (!acfg->aot_opts.full_aot)
+       if (!mono_aot_mode_is_full (&acfg->aot_opts))
                return;
        
        g_assert (acfg->image->assembly);
@@ -6149,9 +6188,6 @@ emit_trampolines (MonoAotCompile *acfg)
                emit_trampoline (acfg, acfg->got_offset, info);
 #endif
 
-               mono_arch_create_generic_class_init_trampoline (&info, TRUE);
-               emit_trampoline (acfg, acfg->got_offset, info);
-
                /* Emit the exception related code pieces */
                mono_arch_get_restore_context (&info, TRUE);
                emit_trampoline (acfg, acfg->got_offset, info);
@@ -6420,6 +6456,21 @@ add_readonly_value (MonoAotOptions *opts, const char *val)
        readonly_values = rdv;
 }
 
+static gchar *
+clean_path (gchar * path)
+{
+       if (!path)
+               return NULL;
+
+       if (g_str_has_suffix (path, G_DIR_SEPARATOR_S))
+               return path;
+
+       gchar *clean = g_strconcat (path, G_DIR_SEPARATOR_S, NULL);
+       g_free (path);
+
+       return clean;
+}
+
 static void
 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
 {
@@ -6433,6 +6484,8 @@ mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
                        opts->outfile = g_strdup (arg + strlen ("outfile="));
                } else if (str_begins_with (arg, "llvm-outfile=")) {
                        opts->llvm_outfile = g_strdup (arg + strlen ("llvm-outfile="));
+               } else if (str_begins_with (arg, "temp-path=")) {
+                       opts->temp_path = clean_path (g_strdup (arg + strlen ("temp-path=")));
                } else if (str_begins_with (arg, "save-temps")) {
                        opts->save_temps = TRUE;
                } else if (str_begins_with (arg, "keep-temps")) {
@@ -6446,7 +6499,9 @@ mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
                } else if (str_begins_with (arg, "bind-to-runtime-version")) {
                        opts->bind_to_runtime_version = TRUE;
                } else if (str_begins_with (arg, "full")) {
-                       opts->full_aot = TRUE;
+                       opts->mode = MONO_AOT_MODE_FULL;
+               } else if (str_begins_with (arg, "hybrid")) {
+                       opts->mode = MONO_AOT_MODE_HYBRID;                      
                } else if (str_begins_with (arg, "threads=")) {
                        opts->nthreads = atoi (arg + strlen ("threads="));
                } else if (str_begins_with (arg, "static")) {
@@ -6504,12 +6559,7 @@ mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
                } else if (str_begins_with (arg, "mtriple=")) {
                        opts->mtriple = g_strdup (arg + strlen ("mtriple="));
                } else if (str_begins_with (arg, "llvm-path=")) {
-                       opts->llvm_path = g_strdup (arg + strlen ("llvm-path="));
-                       if (!g_str_has_suffix (opts->llvm_path, G_DIR_SEPARATOR_S)) {
-                               gchar *old = opts->llvm_path;
-                               opts->llvm_path = g_strconcat (opts->llvm_path, G_DIR_SEPARATOR_S, NULL);
-                               g_free (old);
-                       }
+                       opts->llvm_path = clean_path (g_strdup (arg + strlen ("llvm-path=")));
                } else if (!strcmp (arg, "llvm")) {
                        opts->llvm = TRUE;
                } else if (str_begins_with (arg, "readonly-value=")) {
@@ -6525,6 +6575,8 @@ mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
                        printf ("Supported options for --aot:\n");
                        printf ("    outfile=\n");
                        printf ("    llvm-outfile=\n");
+                       printf ("    llvm-path=\n");
+                       printf ("    temp-path=\n");
                        printf ("    save-temps\n");
                        printf ("    keep-temps\n");
                        printf ("    write-symbols\n");
@@ -6751,7 +6803,7 @@ compile_method (MonoAotCompile *acfg, MonoMethod *method)
         * does not need to support them by creating a fake GOT etc.
         */
        flags = JIT_FLAG_AOT;
-       if (acfg->aot_opts.full_aot)
+       if (mono_aot_mode_is_full (&acfg->aot_opts))
                flags |= JIT_FLAG_FULL_AOT;
        if (acfg->llvm)
                flags |= JIT_FLAG_LLVM;
@@ -6868,7 +6920,7 @@ compile_method (MonoAotCompile *acfg, MonoMethod *method)
                                                  mono_method_is_generic_sharable_full (m, FALSE, FALSE, FALSE)) &&
                                                !method_has_type_vars (m)) {
                                                if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
-                                                       if (acfg->aot_opts.full_aot)
+                                                       if (mono_aot_mode_is_full (&acfg->aot_opts))
                                                                add_extra_method_with_depth (acfg, mono_marshal_get_native_wrapper (m, TRUE, TRUE), depth + 1);
                                                } else {
                                                        add_extra_method_with_depth (acfg, m, depth + 1);
@@ -7398,7 +7450,7 @@ emit_code (MonoAotCompile *acfg)
                method = cfg->orig_method;
 
                /* Emit unbox trampoline */
-               if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype) {
+               if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
                        sprintf (symbol, "ut_%d", get_method_index (acfg, method));
 
                        emit_section_change (acfg, ".text", 0);
@@ -7493,7 +7545,7 @@ emit_code (MonoAotCompile *acfg)
 
                method = cfg->orig_method;
 
-               if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype) {
+               if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
                        index = get_method_index (acfg, method);
 
                        emit_int32 (acfg, index);
@@ -7523,7 +7575,7 @@ emit_code (MonoAotCompile *acfg)
 
                method = cfg->orig_method;
 
-               if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype) {
+               if (mono_aot_mode_is_full (&acfg->aot_opts) && cfg->orig_method->klass->valuetype) {
 #ifdef MONO_ARCH_AOT_SUPPORTED
                        int call_size;
 
@@ -7925,10 +7977,10 @@ emit_exception_info (MonoAotCompile *acfg)
 
                        if (method_seq_points_to_file) {
                                if (!seq_points_to_file) {
-                                       seq_point_data_init (&sp_data, acfg->nmethods);
+                                       mono_seq_point_data_init (&sp_data, acfg->nmethods);
                                        seq_points_to_file = TRUE;
                                }
-                               seq_point_data_add (&sp_data, cfg->method->token, cfg->method_index, cfg->seq_point_info);
+                               mono_seq_point_data_add (&sp_data, cfg->method->token, cfg->method_index, cfg->seq_point_info);
                        }
                } else {
                        offsets [i] = 0;
@@ -7938,8 +7990,8 @@ emit_exception_info (MonoAotCompile *acfg)
        if (seq_points_to_file) {
                char *seq_points_aot_file;
                mono_image_get_aot_seq_point_path (acfg->image, &seq_points_aot_file);
-               seq_point_data_write (&sp_data, seq_points_aot_file);
-               seq_point_data_free (&sp_data);
+               mono_seq_point_data_write (&sp_data, seq_points_aot_file);
+               mono_seq_point_data_free (&sp_data);
                g_free (seq_points_aot_file);
        }
 
@@ -8458,11 +8510,6 @@ emit_file_info (MonoAotCompile *acfg)
                emit_pointer (acfg, NULL);
                emit_pointer (acfg, NULL);
        }
-       if (acfg->thumb_mixed) {
-               emit_pointer (acfg, "thumb_end");
-       } else {
-               emit_pointer (acfg, NULL);
-       }
        if (acfg->aot_opts.static_link) {
                emit_pointer (acfg, "globals");
        } else {
@@ -8556,6 +8603,7 @@ static void
 emit_objc_selectors (MonoAotCompile *acfg)
 {
        int i;
+       char symbol [128];
 
        if (!acfg->objc_selectors || acfg->objc_selectors->len == 0)
                return;
@@ -8570,13 +8618,16 @@ emit_objc_selectors (MonoAotCompile *acfg)
         * EOF
         */
 
-       img_writer_emit_unset_mode (acfg->w);
+       mono_img_writer_emit_unset_mode (acfg->w);
        g_assert (acfg->fp);
        fprintf (acfg->fp, ".section    __DATA,__objc_selrefs,literal_pointers,no_dead_strip\n");
        fprintf (acfg->fp, ".align      3\n");
        for (i = 0; i < acfg->objc_selectors->len; ++i) {
-               fprintf (acfg->fp, "L_OBJC_SELECTOR_REFERENCES_%d:\n", i);
-               fprintf (acfg->fp, ".long       L_OBJC_METH_VAR_NAME_%d\n", i);
+               sprintf (symbol, "L_OBJC_SELECTOR_REFERENCES_%d", i);
+               emit_label (acfg, symbol);
+               sprintf (symbol, "L_OBJC_METH_VAR_NAME_%d", i);
+               emit_pointer (acfg, symbol);
+
        }
        fprintf (acfg->fp, ".section    __TEXT,__cstring,cstring_literals\n");
        for (i = 0; i < acfg->objc_selectors->len; ++i) {
@@ -8640,7 +8691,7 @@ collect_methods (MonoAotCompile *acfg)
                /* Load all methods eagerly to skip the slower lazy loading code */
                mono_class_setup_methods (method->klass);
 
-               if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
+               if (mono_aot_mode_is_full (&acfg->aot_opts) && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
                        /* Compile the wrapper instead */
                        /* We do this here instead of add_wrappers () because it is easy to do it here */
                        MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
@@ -8697,7 +8748,7 @@ collect_methods (MonoAotCompile *acfg)
 
        add_generic_instances (acfg);
 
-       if (acfg->aot_opts.full_aot)
+       if (mono_aot_mode_is_full (&acfg->aot_opts))
                add_wrappers (acfg);
        return TRUE;
 }
@@ -8810,6 +8861,8 @@ compile_asm (MonoAotCompile *acfg)
 #define LD_NAME "gcc -shared --dll"
 #elif defined(TARGET_X86) && defined(TARGET_MACH) && !defined(__native_client_codegen__)
 #define LD_NAME "clang -m32 -dynamiclib"
+#elif defined(TARGET_ARM) && !defined(TARGET_ANDROID)
+#define LD_NAME "gcc --shared"
 #endif
 
        if (acfg->aot_opts.asm_only) {
@@ -8905,7 +8958,7 @@ compile_asm (MonoAotCompile *acfg)
         * gas generates 'mapping symbols' each time code and data is mixed, which 
         * happens a lot in emit_and_reloc_code (), so we need to get rid of them.
         */
-       command = g_strdup_printf ("%sstrip --strip-symbol=\\$a --strip-symbol=\\$d %s", tool_prefix, tmp_outfile_name);
+       command = g_strdup_printf ("\"%sstrip\" --strip-symbol=\\$a --strip-symbol=\\$d %s", tool_prefix, tmp_outfile_name);
        aot_printf (acfg, "Stripping the binary: %s\n", command);
        if (execute_system (command) != 0) {
                g_free (tmp_outfile_name);
@@ -9009,7 +9062,7 @@ acfg_free (MonoAotCompile *acfg)
 {
        int i;
 
-       img_writer_destroy (acfg->w);
+       mono_img_writer_destroy (acfg->w);
        for (i = 0; i < acfg->nmethods; ++i)
                if (acfg->cfgs [i])
                        g_free (acfg->cfgs [i]);
@@ -9067,14 +9120,14 @@ static void aot_dump (MonoAotCompile *acfg)
        char * dumpname;
 
        JsonWriter writer;
-       json_writer_init (&writer);
+       mono_json_writer_init (&writer);
 
-       json_writer_object_begin(&writer);
+       mono_json_writer_object_begin(&writer);
 
        // Methods
-       json_writer_indent (&writer);
-       json_writer_object_key(&writer, "methods");
-       json_writer_array_begin (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_object_key(&writer, "methods");
+       mono_json_writer_array_begin (&writer);
 
        int i;
        for (i = 0; i < acfg->nmethods; ++i) {
@@ -9088,53 +9141,53 @@ static void aot_dump (MonoAotCompile *acfg)
 
                method = cfg->orig_method;
 
-               json_writer_indent (&writer);
-               json_writer_object_begin(&writer);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_begin(&writer);
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "name");
-               json_writer_printf (&writer, "\"%s\",\n", method->name);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "name");
+               mono_json_writer_printf (&writer, "\"%s\",\n", method->name);
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "signature");
-               json_writer_printf (&writer, "\"%s\",\n", mono_method_full_name (method,
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "signature");
+               mono_json_writer_printf (&writer, "\"%s\",\n", mono_method_full_name (method,
                        /*signature=*/TRUE));
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "code_size");
-               json_writer_printf (&writer, "\"%d\",\n", cfg->code_size);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "code_size");
+               mono_json_writer_printf (&writer, "\"%d\",\n", cfg->code_size);
 
                klass = method->klass;
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "class");
-               json_writer_printf (&writer, "\"%s\",\n", klass->name);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "class");
+               mono_json_writer_printf (&writer, "\"%s\",\n", klass->name);
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "namespace");
-               json_writer_printf (&writer, "\"%s\",\n", klass->name_space);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "namespace");
+               mono_json_writer_printf (&writer, "\"%s\",\n", klass->name_space);
 
-               json_writer_indent (&writer);
-               json_writer_object_key(&writer, "wrapper_type");
-               json_writer_printf (&writer, "\"%s\",\n", get_wrapper_type_name(method->wrapper_type));
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_key(&writer, "wrapper_type");
+               mono_json_writer_printf (&writer, "\"%s\",\n", get_wrapper_type_name(method->wrapper_type));
 
-               json_writer_indent_pop (&writer);
-               json_writer_indent (&writer);
-               json_writer_object_end (&writer);
-               json_writer_printf (&writer, ",\n");
+               mono_json_writer_indent_pop (&writer);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_object_end (&writer);
+               mono_json_writer_printf (&writer, ",\n");
        }
 
-       json_writer_indent_pop (&writer);
-       json_writer_indent (&writer);
-       json_writer_array_end (&writer);
-       json_writer_printf (&writer, ",\n");
+       mono_json_writer_indent_pop (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_array_end (&writer);
+       mono_json_writer_printf (&writer, ",\n");
 
        // PLT entries
 #ifdef DUMP_PLT
-       json_writer_indent_push (&writer);
-       json_writer_indent (&writer);
-       json_writer_object_key(&writer, "plt");
-       json_writer_array_begin (&writer);
+       mono_json_writer_indent_push (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_object_key(&writer, "plt");
+       mono_json_writer_array_begin (&writer);
 
        for (i = 0; i < acfg->plt_offset; ++i) {
                MonoPltEntry *plt_entry = NULL;
@@ -9149,44 +9202,44 @@ static void aot_dump (MonoAotCompile *acfg)
                plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
                ji = plt_entry->ji;
 
-               json_writer_indent (&writer);
-               json_writer_printf (&writer, "{ ");
-               json_writer_object_key(&writer, "symbol");
-               json_writer_printf (&writer, "\"%s\" },\n", plt_entry->symbol);
+               mono_json_writer_indent (&writer);
+               mono_json_writer_printf (&writer, "{ ");
+               mono_json_writer_object_key(&writer, "symbol");
+               mono_json_writer_printf (&writer, "\"%s\" },\n", plt_entry->symbol);
        }
 
-       json_writer_indent_pop (&writer);
-       json_writer_indent (&writer);
-       json_writer_array_end (&writer);
-       json_writer_printf (&writer, ",\n");
+       mono_json_writer_indent_pop (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_array_end (&writer);
+       mono_json_writer_printf (&writer, ",\n");
 #endif
 
        // GOT entries
 #ifdef DUMP_GOT
-       json_writer_indent_push (&writer);
-       json_writer_indent (&writer);
-       json_writer_object_key(&writer, "got");
-       json_writer_array_begin (&writer);
+       mono_json_writer_indent_push (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_object_key(&writer, "got");
+       mono_json_writer_array_begin (&writer);
 
-       json_writer_indent_push (&writer);
+       mono_json_writer_indent_push (&writer);
        for (i = 0; i < acfg->got_info.got_patches->len; ++i) {
                MonoJumpInfo *ji = g_ptr_array_index (acfg->got_info.got_patches, i);
 
-               json_writer_indent (&writer);
-               json_writer_printf (&writer, "{ ");
-               json_writer_object_key(&writer, "patch_name");
-               json_writer_printf (&writer, "\"%s\" },\n", get_patch_name (ji->type));
+               mono_json_writer_indent (&writer);
+               mono_json_writer_printf (&writer, "{ ");
+               mono_json_writer_object_key(&writer, "patch_name");
+               mono_json_writer_printf (&writer, "\"%s\" },\n", get_patch_name (ji->type));
        }
 
-       json_writer_indent_pop (&writer);
-       json_writer_indent (&writer);
-       json_writer_array_end (&writer);
-       json_writer_printf (&writer, ",\n");
+       mono_json_writer_indent_pop (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_array_end (&writer);
+       mono_json_writer_printf (&writer, ",\n");
 #endif
 
-       json_writer_indent_pop (&writer);
-       json_writer_indent (&writer);
-       json_writer_object_end (&writer);
+       mono_json_writer_indent_pop (&writer);
+       mono_json_writer_indent (&writer);
+       mono_json_writer_object_end (&writer);
 
        dumpname = g_strdup_printf ("%s.json", g_path_get_basename (acfg->image->name));
        dumpfile = fopen (dumpname, "w+");
@@ -9195,7 +9248,7 @@ static void aot_dump (MonoAotCompile *acfg)
        fprintf (dumpfile, "%s", writer.text->str);
        fclose (dumpfile);
 
-       json_writer_destroy (&writer);
+       mono_json_writer_destroy (&writer);
 }
 
 int
@@ -9245,7 +9298,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
        aot_printf (acfg, "Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
 
 #ifndef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
-       if (acfg->aot_opts.full_aot) {
+       if (mono_aot_mode_is_full (&acfg->aot_opts)) {
                aot_printerrf (acfg, "--aot=full is not supported on this platform.\n");
                return 1;
        }
@@ -9293,11 +9346,17 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                 * Emit all LLVM code into a separate assembly/object file and link with it
                 * normally.
                 */
-               if (!acfg->aot_opts.asm_only)
+               if (!acfg->aot_opts.asm_only) {
                        acfg->llvm_owriter = TRUE;
+               } else if (acfg->aot_opts.llvm_outfile) {
+                       int len = strlen (acfg->aot_opts.llvm_outfile);
+
+                       if (len >= 2 && acfg->aot_opts.llvm_outfile [len - 2] == '.' && acfg->aot_opts.llvm_outfile [len - 1] == 'o')
+                               acfg->llvm_owriter = TRUE;
+               }
        }
 
-       if (acfg->aot_opts.full_aot)
+       if (mono_aot_mode_is_full (&acfg->aot_opts))
                acfg->flags |= MONO_AOT_FILE_FLAG_FULL_AOT;
 
        if (acfg->aot_opts.instances_logfile_path) {
@@ -9310,20 +9369,23 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
 
        load_profile_files (acfg);
 
-       acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = acfg->aot_opts.full_aot ? acfg->aot_opts.ntrampolines : 0;
+       acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ntrampolines : 0;
 #ifdef MONO_ARCH_GSHARED_SUPPORTED
-       acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = acfg->aot_opts.full_aot ? acfg->aot_opts.nrgctx_trampolines : 0;
+       acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nrgctx_trampolines : 0;
 #endif
-       acfg->num_trampolines [MONO_AOT_TRAMP_IMT_THUNK] = acfg->aot_opts.full_aot ? acfg->aot_opts.nimt_trampolines : 0;
+       acfg->num_trampolines [MONO_AOT_TRAMP_IMT_THUNK] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.nimt_trampolines : 0;
 #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
        if (acfg->opts & MONO_OPT_GSHAREDVT)
-               acfg->num_trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = acfg->aot_opts.full_aot ? acfg->aot_opts.ngsharedvt_arg_trampolines : 0;
+               acfg->num_trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = mono_aot_mode_is_full (&acfg->aot_opts) ? acfg->aot_opts.ngsharedvt_arg_trampolines : 0;
 #endif
 
-       acfg->temp_prefix = img_writer_get_temp_label_prefix (NULL);
+       acfg->temp_prefix = mono_img_writer_get_temp_label_prefix (NULL);
 
        arch_init (acfg);
 
+       if (acfg->llvm && acfg->thumb_mixed)
+               acfg->flags |= MONO_AOT_FILE_FLAG_LLVM_THUMB;
+
        acfg->assembly_name_sym = g_strdup (acfg->image->assembly->aname.name);
        /* Get rid of characters which cannot occur in symbols */
        for (p = acfg->assembly_name_sym; *p; ++p) {
@@ -9343,7 +9405,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
 
        acfg->method_index = 1;
 
-       if (acfg->aot_opts.full_aot)
+       if (mono_aot_mode_is_full (&acfg->aot_opts))
                mono_set_partial_sharing_supported (TRUE);
 
        res = collect_methods (acfg);
@@ -9421,6 +9483,10 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                        }
                        g_assert (acfg->aot_opts.llvm_outfile);
                        acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
+                       if (acfg->llvm_owriter)
+                               acfg->llvm_ofile = g_strdup (acfg->aot_opts.llvm_outfile);
+                       else
+                               acfg->llvm_sfile = g_strdup (acfg->aot_opts.llvm_outfile);
                } else {
                        acfg->tmpbasename = g_strdup_printf ("%s", "temp");
                        acfg->tmpfname = g_strdup_printf ("%s.s", acfg->tmpbasename);
@@ -9434,7 +9500,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
        }
 #endif
 
-       if (!acfg->aot_opts.asm_only && !acfg->aot_opts.asm_writer && bin_writer_supported ()) {
+       if (!acfg->aot_opts.asm_only && !acfg->aot_opts.asm_writer && mono_bin_writer_supported ()) {
                if (acfg->aot_opts.outfile)
                        outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
                else
@@ -9452,7 +9518,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                        return 1;
                }
 
-               acfg->w = img_writer_create (acfg->fp, TRUE);
+               acfg->w = mono_img_writer_create (acfg->fp, TRUE);
                acfg->use_bin_writer = TRUE;
        } else {
                if (acfg->aot_opts.asm_only) {
@@ -9469,7 +9535,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                        aot_printerrf (acfg, "Unable to open file '%s': %s\n", acfg->tmpfname, strerror (errno));
                        return 1;
                }
-               acfg->w = img_writer_create (acfg->fp, FALSE);
+               acfg->w = mono_img_writer_create (acfg->fp, FALSE);
                
                tmp_outfile_name = NULL;
                outfile_name = NULL;
@@ -9508,26 +9574,11 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                acfg->dwarf = mono_dwarf_writer_create (acfg->w, NULL, 0, FALSE, !acfg->gas_line_numbers);
        }
 
-       img_writer_emit_start (acfg->w);
+       mono_img_writer_emit_start (acfg->w);
 
        if (acfg->dwarf)
                mono_dwarf_writer_emit_base_info (acfg->dwarf, g_path_get_basename (acfg->image->name), mono_unwind_get_cie_program ());
 
-       if (acfg->thumb_mixed) {
-               char symbol [256];
-               /*
-                * This global symbol marks the end of THUMB code, and the beginning of ARM
-                * code generated by our JIT.
-                */
-               sprintf (symbol, "thumb_end");
-               emit_section_change (acfg, ".text", 0);
-               emit_alignment_code (acfg, 8);
-               emit_label (acfg, symbol);
-               emit_zero_bytes (acfg, 16);
-
-               fprintf (acfg->fp, ".arm\n");
-       }
-
        emit_code (acfg);
 
        emit_info (acfg);
@@ -9614,7 +9665,7 @@ mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
                aot_printf (acfg, "%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
 
        TV_GETTIME (atv);
-       res = img_writer_emit_writeout (acfg->w);
+       res = mono_img_writer_emit_writeout (acfg->w);
        if (res != 0) {
                acfg_free (acfg);
                return res;