X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmetadata%2Fdebug-mono-symfile.c;h=d4c1241478fd78613d559e6ded90896ecd3017e9;hb=c0a8ef12af1f473bfc837325581fe738f1b3178c;hp=db9235cf2a11be11e72b1a18453813dd3d973b0b;hpb=28eaf793c49f36dd8ea54bf9d20fd6e4fa455574;p=mono.git diff --git a/mono/metadata/debug-mono-symfile.c b/mono/metadata/debug-mono-symfile.c index db9235cf2a1..d4c1241478f 100644 --- a/mono/metadata/debug-mono-symfile.c +++ b/mono/metadata/debug-mono-symfile.c @@ -1,16 +1,24 @@ +/* + * debug-mono-symfile.c: + * + * Author: + * Mono Project (http://www.mono-project.com) + * + * Copyright (C) 2005-2008 Novell, Inc. (http://www.novell.com) + * Copyright 2012 Xamarin Inc (http://www.xamarin.com) + */ + #include #include #include #include #include -#include #ifdef HAVE_SYS_PARAM_H #include #endif #include #include #include -#include #include #include #include @@ -21,6 +29,7 @@ #include #include #include +#include #include #ifdef HAVE_UNISTD_H @@ -32,35 +41,40 @@ #define TYPE_TABLE_PTR_CHUNK_SIZE 256 #define TYPE_TABLE_CHUNK_SIZE 65536 +struct _MonoSymbolFile { + const uint8_t *raw_contents; + int raw_contents_size; + void *raw_contents_handle; + int major_version; + int minor_version; + char *filename; + GHashTable *method_hash; + GHashTable *source_hash; + MonoSymbolFileOffsetTable *offset_table; + gboolean was_loaded_from_memory; +}; + static void free_method_info (MonoDebugMethodInfo *minfo) { g_free (minfo); } -static gchar * -get_class_name (MonoClass *klass) +static void +free_source_info (MonoDebugSourceInfo *sinfo) { - MonoClass *nested_in = mono_class_get_nesting_type (klass); - const char *name_space; - if (nested_in) { - gchar *parent_name = get_class_name (nested_in); - gchar *name = g_strdup_printf ("%s.%s", parent_name, mono_class_get_name (klass)); - g_free (parent_name); - return name; - } - - name_space = mono_class_get_namespace (klass); - return g_strdup_printf ("%s%s%s", name_space, - name_space [0] ? "." : "", mono_class_get_name (klass)); + g_free (sinfo->source_file); + g_free (sinfo->guid); + g_free (sinfo->hash); + g_free (sinfo); } static int -load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, gboolean in_the_debugger) +load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, mono_bool in_the_debugger) { const char *ptr, *start; gchar *guid; - guint64 magic; + uint64_t magic; int minor, major; ptr = start = (const char*)symfile->raw_contents; @@ -68,7 +82,7 @@ load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, gboolean in_the_ return FALSE; magic = read64(ptr); - ptr += sizeof(guint64); + ptr += sizeof(uint64_t); if (magic != MONO_SYMBOL_FILE_MAGIC) { if (!in_the_debugger) g_warning ("Symbol file %s is not a mono symbol file", symfile->filename); @@ -76,10 +90,15 @@ load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, gboolean in_the_ } major = read32(ptr); - ptr += sizeof(guint32); + ptr += sizeof(uint32_t); minor = read32(ptr); - ptr += sizeof(guint32); + ptr += sizeof(uint32_t); + /* + * 50.0 is the frozen version for Mono 2.0. + * + * Nobody except me (Martin) is allowed to check the minor version. + */ if (major != MONO_SYMBOL_FILE_MAJOR_VERSION) { if (!in_the_debugger) g_warning ("Symbol file %s has incorrect version (expected %d.%d, got %d)", @@ -88,16 +107,7 @@ load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, gboolean in_the_ return FALSE; } - if (minor != MONO_SYMBOL_FILE_MINOR_VERSION) { - if (!in_the_debugger) - g_warning ("Symbol file %s has incorrect version " - "(expected %d.%d, got %d.%d)", symfile->filename, - MONO_SYMBOL_FILE_MAJOR_VERSION, MONO_SYMBOL_FILE_MINOR_VERSION, - major, minor); - return FALSE; - } - - guid = mono_guid_to_string ((const guint8 *) ptr); + guid = mono_guid_to_string ((const uint8_t *) ptr); ptr += 16; if (strcmp (handle->image->guid, guid)) { @@ -115,18 +125,20 @@ load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, gboolean in_the_ symfile->offset_table = (MonoSymbolFileOffsetTable *) ptr; symfile->method_hash = g_hash_table_new_full ( - g_direct_hash, g_direct_equal, NULL, (GDestroyNotify) free_method_info); + NULL, NULL, NULL, (GDestroyNotify) free_method_info); + + symfile->source_hash = g_hash_table_new_full ( + NULL, NULL, NULL, (GDestroyNotify) free_source_info); g_free (guid); return TRUE; } MonoSymbolFile * -mono_debug_open_mono_symbols (MonoDebugHandle *handle, const guint8 *raw_contents, +mono_debug_open_mono_symbols (MonoDebugHandle *handle, const uint8_t *raw_contents, int size, gboolean in_the_debugger) { MonoSymbolFile *symfile; - FILE* f; mono_debugger_lock (); symfile = g_new0 (MonoSymbolFile, 1); @@ -137,22 +149,22 @@ mono_debug_open_mono_symbols (MonoDebugHandle *handle, const guint8 *raw_content symfile->raw_contents = p = g_malloc (size); memcpy (p, raw_contents, size); symfile->filename = g_strdup_printf ("LoadedFromMemory"); + symfile->was_loaded_from_memory = TRUE; } else { + MonoFileMap *f; symfile->filename = g_strdup_printf ("%s.mdb", mono_image_get_filename (handle->image)); - - if ((f = fopen (symfile->filename, "rb"))) { - struct stat stat_buf; - - if (fstat (fileno (f), &stat_buf) < 0) { + symfile->was_loaded_from_memory = FALSE; + if ((f = mono_file_map_open (symfile->filename))) { + symfile->raw_contents_size = mono_file_map_size (f); + if (symfile->raw_contents_size == 0) { if (!in_the_debugger) g_warning ("stat of %s failed: %s", symfile->filename, g_strerror (errno)); } else { - symfile->raw_contents_size = stat_buf.st_size; - symfile->raw_contents = mono_raw_buffer_load (fileno (f), FALSE, 0, stat_buf.st_size); + symfile->raw_contents = mono_file_map (symfile->raw_contents_size, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (f), 0, &symfile->raw_contents_handle); } - fclose (f); + mono_file_map_close (f); } } @@ -179,8 +191,12 @@ mono_debug_close_mono_symbol_file (MonoSymbolFile *symfile) if (symfile->method_hash) g_hash_table_destroy (symfile->method_hash); - if (symfile->raw_contents) - mono_raw_buffer_free ((gpointer) symfile->raw_contents); + if (symfile->raw_contents) { + if (symfile->was_loaded_from_memory) + g_free ((gpointer)symfile->raw_contents); + else + mono_file_unmap ((gpointer) symfile->raw_contents, symfile->raw_contents_handle); + } if (symfile->filename) g_free (symfile->filename); @@ -188,8 +204,15 @@ mono_debug_close_mono_symbol_file (MonoSymbolFile *symfile) mono_debugger_unlock (); } +mono_bool +mono_debug_symfile_is_loaded (MonoSymbolFile *symfile) +{ + return symfile && symfile->offset_table; +} + + static int -read_leb128 (const guint8 *ptr, const guint8 **rptr) +read_leb128 (const uint8_t *ptr, const uint8_t **rptr) { int ret = 0; int shift = 0; @@ -209,18 +232,26 @@ read_leb128 (const guint8 *ptr, const guint8 **rptr) } static gchar * -read_string (const guint8 *ptr) +read_string (const uint8_t *ptr, const uint8_t **endp) { + gchar *s; int len = read_leb128 (ptr, &ptr); - return g_filename_from_utf8 ((const char *) ptr, len, NULL, NULL, NULL); + + s = g_filename_from_utf8 ((const char *) ptr, len, NULL, NULL, NULL); + ptr += len; + if (endp) + *endp = ptr; + return s; } typedef struct { MonoSymbolFile *symfile; int line_base, line_range, max_address_incr; - guint8 opcode_base; - guint32 last_line, last_file, last_offset; - guint32 line, file, offset; + uint8_t opcode_base; + uint32_t last_line, last_file, last_offset; + uint32_t first_file; + int line, file, offset; + gboolean is_hidden; } StatementMachine; static gboolean @@ -228,7 +259,7 @@ check_line (StatementMachine *stm, int offset, MonoDebugSourceLocation **locatio { gchar *source_file = NULL; - if ((offset > 0) && (stm->offset <= offset)) { + if (stm->offset <= offset) { stm->last_offset = stm->offset; stm->last_file = stm->file; if (stm->line != 0xfeefee) @@ -242,7 +273,16 @@ check_line (StatementMachine *stm, int offset, MonoDebugSourceLocation **locatio MonoSymbolFileSourceEntry *se = (MonoSymbolFileSourceEntry *) (stm->symfile->raw_contents + offset); - source_file = read_string (stm->symfile->raw_contents + read32(&(se->_data_offset))); + source_file = read_string (stm->symfile->raw_contents + read32(&(se->_data_offset)), NULL); + } + + if (stm->last_line == 0) { + /* + * The IL offset is less than the first IL offset which has a corresponding + * source line. + */ + *location = NULL; + return TRUE; } *location = g_new0 (MonoDebugSourceLocation, 1); @@ -263,7 +303,7 @@ check_line (StatementMachine *stm, int offset, MonoDebugSourceLocation **locatio * `native address -> IL offset' mapping. */ MonoDebugSourceLocation * -mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, guint32 offset) +mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, uint32_t offset) { MonoDebugSourceLocation *location = NULL; MonoSymbolFile *symfile; @@ -279,12 +319,15 @@ mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, guint32 offset) #define DW_LNE_end_sequence 1 #define DW_LNE_MONO_negate_is_hidden 0x40 +#define DW_LNE_MONO__extensions_start 0x40 +#define DW_LNE_MONO__extensions_end 0x7f + if ((symfile = minfo->handle->symfile) == NULL) return NULL; - stm.line_base = symfile->offset_table->_line_number_table_line_base; - stm.line_range = symfile->offset_table->_line_number_table_line_range; - stm.opcode_base = (guint8) symfile->offset_table->_line_number_table_opcode_base; + stm.line_base = read32 (&symfile->offset_table->_line_number_table_line_base); + stm.line_range = read32 (&symfile->offset_table->_line_number_table_line_range); + stm.opcode_base = (uint8_t) read32 (&symfile->offset_table->_line_number_table_opcode_base); stm.max_address_incr = (255 - stm.opcode_base) / stm.line_range; mono_debugger_lock (); @@ -293,14 +336,18 @@ mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, guint32 offset) stm.symfile = symfile; stm.offset = stm.last_offset = 0; - stm.file = stm.last_file = 1; - stm.line = stm.last_line = 1; + stm.last_file = 0; + stm.last_line = 0; + stm.first_file = 0; + stm.file = 1; + stm.line = 1; + stm.is_hidden = FALSE; while (TRUE) { - guint8 opcode = *ptr++; + uint8_t opcode = *ptr++; if (opcode == 0) { - guint8 size = *ptr++; + uint8_t size = *ptr++; const unsigned char *end_ptr = ptr + size; opcode = *ptr++; @@ -310,7 +357,10 @@ mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, guint32 offset) goto out_success; break; } else if (opcode == DW_LNE_MONO_negate_is_hidden) { - ; + stm.is_hidden = !stm.is_hidden; + } else if ((opcode >= DW_LNE_MONO__extensions_start) && + (opcode <= DW_LNE_MONO__extensions_end)) { + ; // reserved for future extensions } else { g_warning ("Unknown extended opcode %x in LNT", opcode); } @@ -359,8 +409,279 @@ mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, guint32 offset) return location; } -gint32 -_mono_debug_address_from_il_offset (MonoDebugMethodJitInfo *jit, guint32 il_offset) +static void +add_line (StatementMachine *stm, GPtrArray *il_offset_array, GPtrArray *line_number_array, GPtrArray *source_file_array) +{ + if (stm->line > 0) { + g_ptr_array_add (il_offset_array, GUINT_TO_POINTER (stm->offset)); + g_ptr_array_add (line_number_array, GUINT_TO_POINTER (stm->line)); + g_ptr_array_add (source_file_array, GUINT_TO_POINTER (stm->file)); + } + + if (!stm->is_hidden && !stm->first_file) + stm->first_file = stm->file; +} + +/* + * mono_debug_symfile_free_location: + * + * Free a MonoDebugSourceLocation returned by + * mono_debug_symfile_lookup_location + */ +void +mono_debug_symfile_free_location (MonoDebugSourceLocation *location) +{ + g_free (location->source_file); + g_free (location); +} + +/* + * LOCKING: Assumes the debugger lock is held. + */ +static MonoDebugSourceInfo* +get_source_info (MonoSymbolFile *symfile, int index) +{ + MonoDebugSourceInfo *info; + + info = g_hash_table_lookup (symfile->source_hash, GUINT_TO_POINTER (index)); + if (!info) { + int offset = read32(&(symfile->offset_table->_source_table_offset)) + + (index - 1) * sizeof (MonoSymbolFileSourceEntry); + MonoSymbolFileSourceEntry *se = (MonoSymbolFileSourceEntry *) + (symfile->raw_contents + offset); + const uint8_t *ptr = symfile->raw_contents + read32(&(se->_data_offset)); + + info = g_new0 (MonoDebugSourceInfo, 1); + info->source_file = read_string (ptr, &ptr); + info->guid = g_malloc0 (16); + memcpy (info->guid, ptr, 16); + ptr += 16; + info->hash = g_malloc0 (16); + memcpy (info->hash, ptr, 16); + ptr += 16; + g_hash_table_insert (symfile->source_hash, GUINT_TO_POINTER (index), info); + } + return info; +} + +static gboolean +method_has_column_info (MonoDebugMethodInfo *minfo) +{ + MonoSymbolFile *symfile; + const unsigned char *ptr; + guint32 flags; + + if ((symfile = minfo->handle->symfile) == NULL) + return FALSE; + + ptr = symfile->raw_contents + minfo->data_offset; + + /* Has to read 'flags' which is preceeded by a bunch of other data */ + /* compile_unit_index */ + read_leb128 (ptr, &ptr); + /* local variable table offset */ + read_leb128 (ptr, &ptr); + /* namespace id */ + read_leb128 (ptr, &ptr); + /* code block table offset */ + read_leb128 (ptr, &ptr); + /* scope variable table offset */ + read_leb128 (ptr, &ptr); + /* real name offset */ + read_leb128 (ptr, &ptr); + + flags = read_leb128 (ptr, &ptr); + return (flags & 2) > 0; +} + +/* + * mono_debug_symfile_get_line_numbers_full: + * + * On return, SOURCE_FILE_LIST will point to a GPtrArray of MonoDebugSourceFile + * structures, and SOURCE_FILES will contain indexes into this array. + * The MonoDebugSourceFile structures are owned by this module. + */ +void +mono_debug_symfile_get_line_numbers_full (MonoDebugMethodInfo *minfo, char **source_file, GPtrArray **source_file_list, int *n_il_offsets, int **il_offsets, int **line_numbers, int **column_numbers, int **source_files) +{ + // FIXME: Unify this with mono_debug_symfile_lookup_location + MonoSymbolFile *symfile; + const unsigned char *ptr; + StatementMachine stm; + uint32_t i; + GPtrArray *il_offset_array, *line_number_array, *source_file_array; + gboolean has_column_info; + + if (source_file_list) + *source_file_list = NULL; + if (n_il_offsets) + *n_il_offsets = 0; + if (source_files) + *source_files = NULL; + if (source_file) + *source_file = NULL; + if (column_numbers) + *column_numbers = NULL; + + if ((symfile = minfo->handle->symfile) == NULL) + return; + + has_column_info = method_has_column_info (minfo); + + il_offset_array = g_ptr_array_new (); + line_number_array = g_ptr_array_new (); + source_file_array = g_ptr_array_new (); + + stm.line_base = read32 (&symfile->offset_table->_line_number_table_line_base); + stm.line_range = read32 (&symfile->offset_table->_line_number_table_line_range); + stm.opcode_base = (uint8_t) read32 (&symfile->offset_table->_line_number_table_opcode_base); + stm.max_address_incr = (255 - stm.opcode_base) / stm.line_range; + + mono_debugger_lock (); + + ptr = symfile->raw_contents + minfo->lnt_offset; + + stm.symfile = symfile; + stm.offset = stm.last_offset = 0; + stm.last_file = 0; + stm.last_line = 0; + stm.first_file = 0; + stm.file = 1; + stm.line = 1; + stm.is_hidden = FALSE; + + while (TRUE) { + uint8_t opcode = *ptr++; + + if (opcode == 0) { + uint8_t size = *ptr++; + const unsigned char *end_ptr = ptr + size; + + opcode = *ptr++; + + if (opcode == DW_LNE_end_sequence) { + if (il_offset_array->len == 0) + /* Empty table */ + break; + add_line (&stm, il_offset_array, line_number_array, source_file_array); + break; + } else if (opcode == DW_LNE_MONO_negate_is_hidden) { + stm.is_hidden = !stm.is_hidden; + } else if ((opcode >= DW_LNE_MONO__extensions_start) && + (opcode <= DW_LNE_MONO__extensions_end)) { + ; // reserved for future extensions + } else { + g_warning ("Unknown extended opcode %x in LNT", opcode); + } + + ptr = end_ptr; + continue; + } else if (opcode < stm.opcode_base) { + switch (opcode) { + case DW_LNS_copy: + add_line (&stm, il_offset_array, line_number_array, source_file_array); + break; + case DW_LNS_advance_pc: + stm.offset += read_leb128 (ptr, &ptr); + break; + case DW_LNS_advance_line: + stm.line += read_leb128 (ptr, &ptr); + break; + case DW_LNS_set_file: + stm.file = read_leb128 (ptr, &ptr); + break; + case DW_LNS_const_add_pc: + stm.offset += stm.max_address_incr; + break; + default: + g_warning ("Unknown standard opcode %x in LNT", opcode); + g_assert_not_reached (); + } + } else { + opcode -= stm.opcode_base; + + stm.offset += opcode / stm.line_range; + stm.line += stm.line_base + (opcode % stm.line_range); + + add_line (&stm, il_offset_array, line_number_array, source_file_array); + } + } + + if (!stm.file && stm.first_file) + stm.file = stm.first_file; + + if (stm.file && source_file) { + int offset = read32(&(stm.symfile->offset_table->_source_table_offset)) + + (stm.file - 1) * sizeof (MonoSymbolFileSourceEntry); + MonoSymbolFileSourceEntry *se = (MonoSymbolFileSourceEntry *) + (stm.symfile->raw_contents + offset); + + if (source_file) + *source_file = read_string (stm.symfile->raw_contents + read32(&(se->_data_offset)), NULL); + } + + if (source_file_list) { + int file, last_file = 0; + + *source_file_list = g_ptr_array_new (); + if (source_files) + *source_files = g_malloc (il_offset_array->len * sizeof (int)); + + for (i = 0; i < il_offset_array->len; ++i) { + file = GPOINTER_TO_UINT (g_ptr_array_index (source_file_array, i)); + if (file && file != last_file) { + MonoDebugSourceInfo *info = get_source_info (symfile, file); + + g_ptr_array_add (*source_file_list, info); + } + last_file = file; + if (source_files) + (*source_files) [i] = (*source_file_list)->len - 1; + } + if ((*source_file_list)->len == 0 && stm.file) { + MonoDebugSourceInfo *info = get_source_info (symfile, stm.file); + + g_ptr_array_add (*source_file_list, info); + } + } + + if (n_il_offsets) + *n_il_offsets = il_offset_array->len; + if (il_offsets && line_numbers) { + *il_offsets = g_malloc (il_offset_array->len * sizeof (int)); + *line_numbers = g_malloc (il_offset_array->len * sizeof (int)); + for (i = 0; i < il_offset_array->len; ++i) { + (*il_offsets) [i] = GPOINTER_TO_UINT (g_ptr_array_index (il_offset_array, i)); + (*line_numbers) [i] = GPOINTER_TO_UINT (g_ptr_array_index (line_number_array, i)); + } + } + + if (column_numbers && has_column_info) { + *column_numbers = g_malloc (il_offset_array->len * sizeof (int)); + for (i = 0; i < il_offset_array->len; ++i) + (*column_numbers) [i] = read_leb128 (ptr, &ptr); + } + + g_ptr_array_free (il_offset_array, TRUE); + g_ptr_array_free (line_number_array, TRUE); + + mono_debugger_unlock (); + return; +} + +/* + * mono_debug_symfile_get_line_numbers: + * + * All the output parameters can be NULL. + */ +void +mono_debug_symfile_get_line_numbers (MonoDebugMethodInfo *minfo, char **source_file, int *n_il_offsets, int **il_offsets, int **line_numbers) +{ + mono_debug_symfile_get_line_numbers_full (minfo, source_file, NULL, n_il_offsets, il_offsets, line_numbers, NULL, NULL); +} + +int32_t +_mono_debug_address_from_il_offset (MonoDebugMethodJitInfo *jit, uint32_t il_offset) { int i; @@ -370,8 +691,6 @@ _mono_debug_address_from_il_offset (MonoDebugMethodJitInfo *jit, guint32 il_offs for (i = jit->num_line_numbers - 1; i >= 0; i--) { MonoDebugLineNumberEntry lne = jit->line_numbers [i]; - if (lne.il_offset < 0) - continue; if (lne.il_offset <= il_offset) return lne.native_offset; } @@ -382,7 +701,7 @@ _mono_debug_address_from_il_offset (MonoDebugMethodJitInfo *jit, guint32 il_offs static int compare_method (const void *key, const void *object) { - guint32 token = GPOINTER_TO_UINT (key); + uint32_t token = GPOINTER_TO_UINT (key); MonoSymbolFileMethodEntry *me = (MonoSymbolFileMethodEntry*)object; return token - read32(&(me->_token)); @@ -402,6 +721,13 @@ mono_debug_symfile_lookup_method (MonoDebugHandle *handle, MonoMethod *method) return NULL; mono_debugger_lock (); + + minfo = g_hash_table_lookup (symfile->method_hash, method); + if (minfo) { + mono_debugger_unlock (); + return minfo; + } + first_ie = (MonoSymbolFileMethodEntry *) (symfile->raw_contents + read32(&(symfile->offset_table->_method_table_offset))); @@ -427,3 +753,79 @@ mono_debug_symfile_lookup_method (MonoDebugHandle *handle, MonoMethod *method) mono_debugger_unlock (); return minfo; } + +/* + * mono_debug_symfile_lookup_locals: + * + * Return information about the local variables of MINFO from the symbol file. + * Return NULL if no information can be found. + * The result should be freed using mono_debug_symfile_free_locals (). + */ +MonoDebugLocalsInfo* +mono_debug_symfile_lookup_locals (MonoDebugMethodInfo *minfo) +{ + MonoSymbolFile *symfile = minfo->handle->symfile; + const uint8_t *p; + int i, len, compile_unit_index, locals_offset, num_locals, block_index; + int namespace_id, code_block_table_offset; + MonoDebugLocalsInfo *res; + + if (!symfile) + return NULL; + + p = symfile->raw_contents + minfo->data_offset; + + compile_unit_index = read_leb128 (p, &p); + locals_offset = read_leb128 (p, &p); + namespace_id = read_leb128 (p, &p); + code_block_table_offset = read_leb128 (p, &p); + + res = g_new0 (MonoDebugLocalsInfo, 1); + + p = symfile->raw_contents + code_block_table_offset; + res->num_blocks = read_leb128 (p, &p); + res->code_blocks = g_new0 (MonoDebugCodeBlock, res->num_blocks); + for (i = 0; i < res->num_blocks; ++i) { + res->code_blocks [i].type = read_leb128 (p, &p); + res->code_blocks [i].parent = read_leb128 (p, &p); + res->code_blocks [i].start_offset = read_leb128 (p, &p); + res->code_blocks [i].end_offset = read_leb128 (p, &p); + } + + p = symfile->raw_contents + locals_offset; + num_locals = read_leb128 (p, &p); + + res->num_locals = num_locals; + res->locals = g_new0 (MonoDebugLocalVar, num_locals); + + for (i = 0; i < num_locals; ++i) { + res->locals [i].index = read_leb128 (p, &p); + len = read_leb128 (p, &p); + res->locals [i].name = g_malloc (len + 1); + memcpy (res->locals [i].name, p, len); + res->locals [i].name [len] = '\0'; + p += len; + block_index = read_leb128 (p, &p); + if (block_index >= 1 && block_index <= res->num_blocks) + res->locals [i].block = &res->code_blocks [block_index - 1]; + } + + return res; +} + +/* + * mono_debug_symfile_free_locals: + * + * Free all the data allocated by mono_debug_symfile_lookup_locals (). + */ +void +mono_debug_symfile_free_locals (MonoDebugLocalsInfo *info) +{ + int i; + + for (i = 0; i < info->num_locals; ++i) + g_free (info->locals [i].name); + g_free (info->locals); + g_free (info->code_blocks); + g_free (info); +}