Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Branch: master
Fetching contributors…

Cannot retrieve contributors at this time

837 lines (705 sloc) 22.295 kB
/*
* 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 <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/stat.h>
#include <mono/metadata/metadata.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/tokentype.h>
#include <mono/metadata/appdomain.h>
#include <mono/metadata/exception.h>
#include <mono/metadata/debug-helpers.h>
#include <mono/metadata/mono-debug.h>
#include <mono/metadata/debug-mono-symfile.h>
#include <mono/metadata/mono-debug-debugger.h>
#include <mono/metadata/mono-endian.h>
#include <mono/metadata/metadata-internals.h>
#include <mono/metadata/class-internals.h>
#include <mono/utils/mono-mmap.h>
#include <mono/utils/bsearch.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#define RANGE_TABLE_CHUNK_SIZE 256
#define CLASS_TABLE_CHUNK_SIZE 256
#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 void
free_source_info (MonoDebugSourceInfo *sinfo)
{
g_free (sinfo->source_file);
g_free (sinfo->guid);
g_free (sinfo->hash);
g_free (sinfo);
}
static int
load_symfile (MonoDebugHandle *handle, MonoSymbolFile *symfile, mono_bool in_the_debugger)
{
const char *ptr, *start;
gchar *guid;
uint64_t magic;
int minor, major;
ptr = start = (const char*)symfile->raw_contents;
if (!ptr)
return FALSE;
magic = read64(ptr);
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);
return FALSE;
}
major = read32(ptr);
ptr += sizeof(uint32_t);
minor = read32(ptr);
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)",
symfile->filename, MONO_SYMBOL_FILE_MAJOR_VERSION,
MONO_SYMBOL_FILE_MINOR_VERSION, major);
return FALSE;
}
guid = mono_guid_to_string ((const uint8_t *) ptr);
ptr += 16;
if (strcmp (handle->image->guid, guid)) {
if (!in_the_debugger)
g_warning ("Symbol file %s doesn't match image %s", symfile->filename,
handle->image->name);
if (guid)
g_free (guid);
return FALSE;
}
symfile->major_version = major;
symfile->minor_version = minor;
symfile->offset_table = (MonoSymbolFileOffsetTable *) ptr;
symfile->method_hash = g_hash_table_new_full (
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 uint8_t *raw_contents,
int size, gboolean in_the_debugger)
{
MonoSymbolFile *symfile;
mono_debugger_lock ();
symfile = g_new0 (MonoSymbolFile, 1);
if (raw_contents != NULL) {
unsigned char *p;
symfile->raw_contents_size = size;
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));
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 = mono_file_map (symfile->raw_contents_size, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (f), 0, &symfile->raw_contents_handle);
}
mono_file_map_close (f);
}
}
if (load_symfile (handle, symfile, in_the_debugger)) {
mono_debugger_unlock ();
return symfile;
} else if (!in_the_debugger) {
mono_debug_close_mono_symbol_file (symfile);
mono_debugger_unlock ();
return NULL;
}
mono_debugger_unlock ();
return symfile;
}
void
mono_debug_close_mono_symbol_file (MonoSymbolFile *symfile)
{
if (!symfile)
return;
mono_debugger_lock ();
if (symfile->method_hash)
g_hash_table_destroy (symfile->method_hash);
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);
g_free (symfile);
mono_debugger_unlock ();
}
mono_bool
mono_debug_symfile_is_loaded (MonoSymbolFile *symfile)
{
return symfile && symfile->offset_table;
}
static int
read_leb128 (const uint8_t *ptr, const uint8_t **rptr)
{
int ret = 0;
int shift = 0;
char b;
do {
b = *ptr++;
ret = ret | ((b & 0x7f) << shift);
shift += 7;
} while ((b & 0x80) == 0x80);
if (rptr)
*rptr = ptr;
return ret;
}
static gchar *
read_string (const uint8_t *ptr, const uint8_t **endp)
{
gchar *s;
int len = read_leb128 (ptr, &ptr);
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;
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
check_line (StatementMachine *stm, int offset, MonoDebugSourceLocation **location)
{
gchar *source_file = NULL;
if (stm->offset <= offset) {
stm->last_offset = stm->offset;
stm->last_file = stm->file;
if (stm->line != 0xfeefee)
stm->last_line = stm->line;
return FALSE;
}
if (stm->last_file) {
int offset = read32(&(stm->symfile->offset_table->_source_table_offset)) +
(stm->last_file - 1) * sizeof (MonoSymbolFileSourceEntry);
MonoSymbolFileSourceEntry *se = (MonoSymbolFileSourceEntry *)
(stm->symfile->raw_contents + 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);
(*location)->source_file = source_file;
(*location)->row = stm->last_line;
(*location)->il_offset = stm->last_offset;
return TRUE;
}
/**
* mono_debug_symfile_lookup_location:
* @minfo: A `MonoDebugMethodInfo' which can be retrieved by
* mono_debug_lookup_method().
* @offset: IL offset within the corresponding method's CIL code.
*
* This function is similar to mono_debug_lookup_location(), but we
* already looked up the method and also already did the
* `native address -> IL offset' mapping.
*/
MonoDebugSourceLocation *
mono_debug_symfile_lookup_location (MonoDebugMethodInfo *minfo, uint32_t offset)
{
MonoDebugSourceLocation *location = NULL;
MonoSymbolFile *symfile;
const unsigned char *ptr;
StatementMachine stm;
#define DW_LNS_copy 1
#define DW_LNS_advance_pc 2
#define DW_LNS_advance_line 3
#define DW_LNS_set_file 4
#define DW_LNS_const_add_pc 8
#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 = 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 (check_line (&stm, -1, &location))
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);
}
ptr = end_ptr;
continue;
} else if (opcode < stm.opcode_base) {
switch (opcode) {
case DW_LNS_copy:
if (check_line (&stm, offset, &location))
goto out_success;
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);
goto error_out;
}
} else {
opcode -= stm.opcode_base;
stm.offset += opcode / stm.line_range;
stm.line += stm.line_base + (opcode % stm.line_range);
if (check_line (&stm, offset, &location))
goto out_success;
}
}
error_out:
mono_debugger_unlock ();
return NULL;
out_success:
mono_debugger_unlock ();
return location;
}
static void
add_line (StatementMachine *stm, GPtrArray *il_offset_array, GPtrArray *line_number_array, GPtrArray *source_file_array, GPtrArray *hidden_array)
{
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));
g_ptr_array_add (hidden_array, GUINT_TO_POINTER (stm->is_hidden || stm->line <= 0));
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;
}
typedef enum {
LNT_FLAG_HAS_COLUMN_INFO = 1 << 1,
LNT_FLAG_HAS_END_INFO = 1 << 2,
} LineNumberTableFlags;
static LineNumberTableFlags
method_get_lnt_flags (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;
}
/*
* mono_debug_symfile_get_seq_points:
*
* 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_seq_points (MonoDebugMethodInfo *minfo, char **source_file, GPtrArray **source_file_list, int **source_files, MonoSymSeqPoint **seq_points, int *n_seq_points)
{
// FIXME: Unify this with mono_debug_symfile_lookup_location
MonoSymbolFile *symfile;
const unsigned char *ptr;
StatementMachine stm;
uint32_t i, j, n;
LineNumberTableFlags flags;
GPtrArray *il_offset_array, *line_number_array, *source_file_array, *hidden_array;
gboolean has_column_info, has_end_info;
MonoSymSeqPoint *sps;
if (source_file_list)
*source_file_list = NULL;
if (seq_points)
*seq_points = NULL;
if (n_seq_points)
*n_seq_points = 0;
if (source_files)
*source_files = NULL;
if (source_file)
*source_file = NULL;
if ((symfile = minfo->handle->symfile) == NULL)
return;
flags = method_get_lnt_flags (minfo);
has_column_info = (flags & LNT_FLAG_HAS_COLUMN_INFO) > 0;
has_end_info = (flags & LNT_FLAG_HAS_END_INFO) > 0;
il_offset_array = g_ptr_array_new ();
line_number_array = g_ptr_array_new ();
source_file_array = g_ptr_array_new ();
hidden_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;
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, hidden_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, hidden_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_seq_points) {
g_assert (seq_points);
n = il_offset_array->len;
for (i = 0; i < il_offset_array->len; i++) {
if (GPOINTER_TO_UINT (g_ptr_array_index (hidden_array, i))) {
n --;
}
}
*n_seq_points = n;
*seq_points = sps = g_new0 (MonoSymSeqPoint, n);
j = 0;
for (i = 0; i < il_offset_array->len; ++i) {
MonoSymSeqPoint *sp = &(sps [j]);
if (!GPOINTER_TO_UINT (g_ptr_array_index (hidden_array, i))) {
sp->il_offset = GPOINTER_TO_UINT (g_ptr_array_index (il_offset_array, i));
sp->line = GPOINTER_TO_UINT (g_ptr_array_index (line_number_array, i));
sp->column = -1;
sp->end_line = -1;
sp->end_column = -1;
j ++;
}
}
if (has_column_info) {
j = 0;
for (i = 0; i < il_offset_array->len; ++i) {
MonoSymSeqPoint *sp = &(sps [j]);
int column = read_leb128 (ptr, &ptr);
if (!GPOINTER_TO_UINT (g_ptr_array_index (hidden_array, i))) {
sp->column = column;
j++;
}
}
}
if (has_end_info) {
j = 0;
for (i = 0; i < il_offset_array->len; ++i) {
MonoSymSeqPoint *sp = &(sps [j]);
int end_row, end_column = -1;
end_row = read_leb128 (ptr, &ptr);
if (end_row != 0xffffff) {
end_row += GPOINTER_TO_UINT (g_ptr_array_index (line_number_array, i));
end_column = read_leb128 (ptr, &ptr);
if (!GPOINTER_TO_UINT (g_ptr_array_index (hidden_array, i))) {
sp->end_line = end_row;
sp->end_column = end_column;
j++;
}
}
}
}
}
g_ptr_array_free (il_offset_array, TRUE);
g_ptr_array_free (line_number_array, TRUE);
g_ptr_array_free (hidden_array, TRUE);
mono_debugger_unlock ();
return;
}
static int
compare_method (const void *key, const void *object)
{
uint32_t token = GPOINTER_TO_UINT (key);
MonoSymbolFileMethodEntry *me = (MonoSymbolFileMethodEntry*)object;
return token - read32(&(me->_token));
}
MonoDebugMethodInfo *
mono_debug_symfile_lookup_method (MonoDebugHandle *handle, MonoMethod *method)
{
MonoSymbolFileMethodEntry *first_ie, *ie;
MonoDebugMethodInfo *minfo;
MonoSymbolFile *symfile = handle->symfile;
if (!symfile->method_hash)
return NULL;
if (handle->image != mono_class_get_image (mono_method_get_class (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)));
ie = mono_binary_search (GUINT_TO_POINTER (mono_method_get_token (method)), first_ie,
read32(&(symfile->offset_table->_method_count)),
sizeof (MonoSymbolFileMethodEntry), compare_method);
if (!ie) {
mono_debugger_unlock ();
return NULL;
}
minfo = g_new0 (MonoDebugMethodInfo, 1);
minfo->index = (ie - first_ie) + 1;
minfo->method = method;
minfo->handle = handle;
minfo->data_offset = read32 (&(ie->_data_offset));
minfo->lnt_offset = read32 (&(ie->_line_number_table));
g_hash_table_insert (symfile->method_hash, method, minfo);
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, locals_offset, num_locals, block_index;
int 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;
}
Jump to Line
Something went wrong with that request. Please try again.