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main.c
1925 lines (1665 loc) · 55.2 KB
/
main.c
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/*
* main.c: Sample disassembler
*
* Author:
* Miguel de Icaza (miguel@ximian.com)
*
* (C) 2001 Ximian, Inc.
*
* TODO:
* Investigate how interface inheritance works and how it should be dumped.
* Structs are not being labeled as `valuetype' classes
*
* How are fields with literals mapped to constants?
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <glib.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include "meta.h"
#include "util.h"
#include "dump.h"
#include "get.h"
#include "dis-cil.h"
#include "declsec.h"
#include <mono/metadata/class-internals.h>
#include <mono/metadata/object-internals.h>
#include <mono/metadata/loader.h>
#include <mono/metadata/assembly.h>
#include <mono/metadata/appdomain.h>
static void setup_filter (MonoImage *image);
static gboolean should_include_type (int idx);
static gboolean should_include_method (int idx);
static gboolean should_include_field (int idx);
FILE *output;
/* True if you want to get a dump of the header data */
gboolean dump_header_data_p = FALSE;
/* True if you want to get forward declarations */
gboolean dump_forward_decls = FALSE;
/* True if you want to dump managed resources as files */
gboolean dump_managed_resources = FALSE;
gboolean substitute_with_mscorlib_p = FALSE;
int dump_table = -1;
static void
dump_header_data (MonoImage *img)
{
if (!dump_header_data_p)
return;
fprintf (output,
"// Ximian's CIL disassembler, version 1.0\n"
"// Copyright (C) 2001 Ximian, Inc.\n\n");
}
static void
dump_cattrs_list (GList *list, const char *indent)
{
GList *tmp;
for (tmp = list; tmp; tmp = tmp->next) {
fprintf (output, "%s%s\n", indent, (char*)tmp->data);
g_free (tmp->data);
}
g_list_free (list);
}
static void
dump_cattrs (MonoImage *m, guint32 token, const char *indent)
{
GList *list;
list = dis_get_custom_attrs (m, token);
dump_cattrs_list (list, indent);
}
static const char*
get_il_security_action (int val)
{
static char buf [32];
switch (val) {
case SECURITY_ACTION_DEMAND:
return "demand";
case SECURITY_ACTION_ASSERT:
return "assert";
case SECURITY_ACTION_DENY:
return "deny";
case SECURITY_ACTION_PERMITONLY:
return "permitonly";
case SECURITY_ACTION_LINKDEMAND:
return "linkcheck";
case SECURITY_ACTION_INHERITDEMAND:
return "inheritcheck";
case SECURITY_ACTION_REQMIN:
return "reqmin";
case SECURITY_ACTION_REQOPT:
return "reqopt";
case SECURITY_ACTION_REQREFUSE:
return "reqrefuse";
/* Special actions (for non CAS permissions) */
case SECURITY_ACTION_NONCASDEMAND:
return "noncasdemand";
case SECURITY_ACTION_NONCASLINKDEMAND:
return "noncaslinkdemand";
case SECURITY_ACTION_NONCASINHERITANCE:
return "noncasinheritance";
/* Fx 2.0 actions (for both CAS and non-CAS permissions) */
case SECURITY_ACTION_LINKDEMANDCHOICE:
return "linkdemandor";
case SECURITY_ACTION_INHERITDEMANDCHOICE:
return "inheritancedemandor";
case SECURITY_ACTION_DEMANDCHOICE:
return "demandor";
default:
g_snprintf (buf, sizeof (buf), "0x%04X", val);
return buf;
}
}
#define OBJECT_TYPE_TYPEDEF 0
#define OBJECT_TYPE_METHODDEF 1
#define OBJECT_TYPE_ASSEMBLYDEF 2
static void
dump_declarative_security (MonoImage *m, guint32 objectType, guint32 token, const char *indent)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_DECLSECURITY];
guint32 cols [MONO_DECL_SECURITY_SIZE];
int i, len;
guint32 idx;
const char *blob, *action;
for (i = 1; i <= t->rows; i++) {
mono_metadata_decode_row (t, i - 1, cols, MONO_DECL_SECURITY_SIZE);
blob = mono_metadata_blob_heap (m, cols [MONO_DECL_SECURITY_PERMISSIONSET]);
len = mono_metadata_decode_blob_size (blob, &blob);
action = get_il_security_action (cols [MONO_DECL_SECURITY_ACTION]);
idx = cols [MONO_DECL_SECURITY_PARENT];
if (((idx & MONO_HAS_DECL_SECURITY_MASK) == objectType) && ((idx >> MONO_HAS_DECL_SECURITY_BITS) == token)) {
char *dump;
if (blob [0] == MONO_DECLSEC_FORMAT_20) {
/* 2.0 declarative security format */
dump = dump_declsec_entry20 (m, blob, indent);
fprintf (output, "%s.permissionset %s = %s\n", indent, action, dump);
} else {
/* 1.x declarative security metadata format */
dump = data_dump (blob, len, indent);
fprintf (output, "%s.permissionset %s = %s", indent, action, dump);
}
g_free (dump);
}
}
}
static char *
assembly_flags (guint32 f)
{
if (f & ASSEMBLYREF_RETARGETABLE_FLAG)
return g_strdup ("retargetable ");
return g_strdup ("");
}
static void
dis_directive_assembly (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_ASSEMBLY];
guint32 cols [MONO_ASSEMBLY_SIZE];
char *flags;
if (t->base == NULL)
return;
mono_metadata_decode_row (t, 0, cols, MONO_ASSEMBLY_SIZE);
flags = assembly_flags (cols [MONO_ASSEMBLY_FLAGS]);
fprintf (output, ".assembly %s'%s'\n{\n",
flags, mono_metadata_string_heap (m, cols [MONO_ASSEMBLY_NAME]));
dump_cattrs (m, MONO_TOKEN_ASSEMBLY | 1, " ");
dump_declarative_security (m, OBJECT_TYPE_ASSEMBLYDEF, 1, " ");
fprintf (output,
" .hash algorithm 0x%08x\n"
" .ver %d:%d:%d:%d\n",
cols [MONO_ASSEMBLY_HASH_ALG],
cols [MONO_ASSEMBLY_MAJOR_VERSION], cols [MONO_ASSEMBLY_MINOR_VERSION],
cols [MONO_ASSEMBLY_BUILD_NUMBER], cols [MONO_ASSEMBLY_REV_NUMBER]);
if (cols [MONO_ASSEMBLY_CULTURE]){
const char *locale = mono_metadata_string_heap (m, cols [MONO_ASSEMBLY_CULTURE]);
glong items_read, items_written;
gunichar2 *render = g_utf8_to_utf16 (locale, strlen (locale), &items_read, &items_written, NULL);
char *dump = data_dump ((const char *) render, items_written * sizeof (gunichar2), "\t\t");
fprintf (output, " .locale %s\n", dump);
g_free (dump);
g_free (render);
} if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
const char* b = mono_metadata_blob_heap (m, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
int len = mono_metadata_decode_blob_size (b, &b);
char *dump = data_dump (b, len, "\t\t");
fprintf (output, " .publickey =%s", dump);
g_free (dump);
}
fprintf (output, "}\n");
g_free (flags);
}
static void
dis_directive_assemblyref (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_ASSEMBLYREF];
guint32 cols [MONO_ASSEMBLYREF_SIZE];
int i;
if (t->base == NULL)
return;
for (i = 0; i < t->rows; i++){
char *esc, *flags;
mono_metadata_decode_row (t, i, cols, MONO_ASSEMBLYREF_SIZE);
esc = get_escaped_name (mono_metadata_string_heap (m, cols [MONO_ASSEMBLYREF_NAME]));
flags = assembly_flags (cols [MONO_ASSEMBLYREF_FLAGS]);
fprintf (output,
".assembly extern %s%s\n"
"{\n"
" .ver %d:%d:%d:%d\n",
flags,
esc,
cols [MONO_ASSEMBLYREF_MAJOR_VERSION], cols [MONO_ASSEMBLYREF_MINOR_VERSION],
cols [MONO_ASSEMBLYREF_BUILD_NUMBER], cols [MONO_ASSEMBLYREF_REV_NUMBER]
);
dump_cattrs (m, MONO_TOKEN_ASSEMBLY_REF | (i + 1), " ");
if (cols [MONO_ASSEMBLYREF_CULTURE]){
fprintf (output, " .locale %s\n", mono_metadata_string_heap (m, cols [MONO_ASSEMBLYREF_CULTURE]));
}
if (cols [MONO_ASSEMBLYREF_PUBLIC_KEY]){
const char* b = mono_metadata_blob_heap (m, cols [MONO_ASSEMBLYREF_PUBLIC_KEY]);
int len = mono_metadata_decode_blob_size (b, &b);
char *dump = data_dump (b, len, "\t\t");
fprintf (output, " .publickeytoken =%s", dump);
g_free (dump);
}
fprintf (output, "}\n");
g_free (flags);
g_free (esc);
}
}
static void
dis_directive_module (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_MODULE];
int i;
for (i = 0; i < t->rows; i++){
guint32 cols [MONO_MODULE_SIZE];
const char *name;
char *guid, *ename;
mono_metadata_decode_row (t, i, cols, MONO_MODULE_SIZE);
name = mono_metadata_string_heap (m, cols [MONO_MODULE_NAME]);
ename = get_escaped_name (name);
guid = get_guid (m, cols [MONO_MODULE_MVID]);
fprintf (output, ".module %s // GUID = %s\n\n", ename, guid);
g_free (ename);
dump_cattrs (m, MONO_TOKEN_MODULE | (i + 1), "");
}
}
static void
dis_directive_moduleref (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_MODULEREF];
int i;
for (i = 0; i < t->rows; i++){
guint32 cols [MONO_MODULEREF_SIZE];
mono_metadata_decode_row (t, i, cols, MONO_MODULEREF_SIZE);
fprintf (output, ".module extern '%s'\n", mono_metadata_string_heap (m, cols [MONO_MODULEREF_NAME]));
}
}
static void
dis_nt_header (MonoImage *m)
{
MonoCLIImageInfo *image_info = m->image_info;
if (image_info && image_info->cli_header.nt.pe_stack_reserve != 0x100000)
fprintf (output, ".stackreserve 0x%x\n", image_info->cli_header.nt.pe_stack_reserve);
}
static void
dis_directive_file (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_FILE];
int i, j, len;
guint32 entry_point;
entry_point = mono_image_get_entry_point (m);
for (i = 0; i < t->rows; i++){
guint32 cols [MONO_FILE_SIZE];
const char *name, *hash;
guint32 token;
mono_metadata_decode_row (t, i, cols, MONO_FILE_SIZE);
name = mono_metadata_string_heap (m, cols [MONO_FILE_NAME]);
hash = mono_metadata_blob_heap (m, cols [MONO_FILE_HASH_VALUE]);
len = mono_metadata_decode_blob_size (hash, &hash);
fprintf (output, ".file %s%s .hash = (",
cols [MONO_FILE_FLAGS] & FILE_CONTAINS_NO_METADATA ? "nometadata " : "", name);
for (j = 0; j < len; ++j)
fprintf (output, " %02X", hash [j] & 0xff);
token = mono_metadata_make_token (MONO_TABLE_FILE, i + 1);
fprintf (output, " )%s\n", (token == entry_point) ? " .entrypoint" : "");
}
}
static void
dis_directive_mresource (MonoImage *m)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_MANIFESTRESOURCE];
int i;
for (i = 0; i < t->rows; i++){
guint32 cols [MONO_MANIFEST_SIZE];
const char *name;
guint32 impl, idx, name_token;
mono_metadata_decode_row (t, i, cols, MONO_MANIFEST_SIZE);
name = mono_metadata_string_heap (m, cols [MONO_MANIFEST_NAME]);
fprintf (output, ".mresource %s '%s'\n", (cols [MONO_MANIFEST_FLAGS] & MANIFEST_RESOURCE_VISIBILITY_MASK) == (MANIFEST_RESOURCE_PUBLIC) ? "public" : "private", name);
fprintf (output, "{\n");
impl = cols [MONO_MANIFEST_IMPLEMENTATION];
if (impl) {
idx = impl >> MONO_IMPLEMENTATION_BITS;
if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_FILE) {
name_token = mono_metadata_decode_row_col (&m->tables [MONO_TABLE_FILE], idx - 1, MONO_FILE_NAME);
fprintf (output, " .file '%s' at 0x0\n", mono_metadata_string_heap (m, name_token));
}
if ((impl & MONO_IMPLEMENTATION_MASK) == MONO_IMPLEMENTATION_ASSEMBLYREF) {
name_token = mono_metadata_decode_row_col (&m->tables [MONO_TABLE_ASSEMBLYREF], idx - 1, MONO_ASSEMBLYREF_NAME);
fprintf (output, " .assembly extern '%s'\n", mono_metadata_string_heap (m, name_token));
}
}
fprintf (output, "}\n");
}
}
static dis_map_t visibility_map [] = {
{ TYPE_ATTRIBUTE_NOT_PUBLIC, "private " },
{ TYPE_ATTRIBUTE_PUBLIC, "public " },
{ TYPE_ATTRIBUTE_NESTED_PUBLIC, "nested public " },
{ TYPE_ATTRIBUTE_NESTED_PRIVATE, "nested private " },
{ TYPE_ATTRIBUTE_NESTED_FAMILY, "nested family " },
{ TYPE_ATTRIBUTE_NESTED_ASSEMBLY, "nested assembly " },
{ TYPE_ATTRIBUTE_NESTED_FAM_AND_ASSEM, "nested famandassem " },
{ TYPE_ATTRIBUTE_NESTED_FAM_OR_ASSEM, "nested famorassem " },
{ 0, NULL }
};
static dis_map_t layout_map [] = {
{ TYPE_ATTRIBUTE_AUTO_LAYOUT, "auto " },
{ TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT, "sequential " },
{ TYPE_ATTRIBUTE_EXPLICIT_LAYOUT, "explicit " },
{ 0, NULL }
};
static dis_map_t format_map [] = {
{ TYPE_ATTRIBUTE_ANSI_CLASS, "ansi " },
{ TYPE_ATTRIBUTE_UNICODE_CLASS, "unicode " },
{ TYPE_ATTRIBUTE_AUTO_CLASS, "auto " },
{ 0, NULL }
};
static char *
typedef_flags (guint32 flags)
{
static char buffer [1024];
int visibility = flags & TYPE_ATTRIBUTE_VISIBILITY_MASK;
int layout = flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
int format = flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK;
buffer [0] = 0;
strcat (buffer, map (visibility, visibility_map));
strcat (buffer, map (layout, layout_map));
strcat (buffer, map (format, format_map));
if (flags & TYPE_ATTRIBUTE_ABSTRACT)
strcat (buffer, "abstract ");
if (flags & TYPE_ATTRIBUTE_SEALED)
strcat (buffer, "sealed ");
if (flags & TYPE_ATTRIBUTE_SPECIAL_NAME)
strcat (buffer, "specialname ");
if (flags & TYPE_ATTRIBUTE_IMPORT)
strcat (buffer, "import ");
if (flags & TYPE_ATTRIBUTE_SERIALIZABLE)
strcat (buffer, "serializable ");
if (flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)
strcat (buffer, "beforefieldinit ");
if (flags & TYPE_ATTRIBUTE_FORWARDER)
strcat (buffer, "forwarder ");
return buffer;
}
/**
* dis_field_list:
* @m: metadata context
* @start: starting index into the Field Table.
* @end: ending index into Field table.
*
* This routine displays all the decoded fields from @start to @end
*/
static void
dis_field_list (MonoImage *m, guint32 start, guint32 end, MonoGenericContainer *container)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_FIELD];
guint32 cols [MONO_FIELD_SIZE];
char *esname;
char rva_desc [32];
guint32 rva;
int i;
if (end > t->rows + 1) {
g_warning ("ERROR index out of range in fields");
end = t->rows;
}
for (i = start; i < end; i++){
char *sig, *flags, *attrs = NULL;
char *marshal_str = NULL;
guint32 field_offset = -1;
if (!should_include_field (i + 1))
continue;
mono_metadata_decode_row (t, i, cols, MONO_FIELD_SIZE);
sig = get_field_signature (m, cols [MONO_FIELD_SIGNATURE], container);
flags = field_flags (cols [MONO_FIELD_FLAGS]);
if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_HAS_FIELD_MARSHAL) {
const char *tp;
MonoMarshalSpec *spec;
tp = mono_metadata_get_marshal_info (m, i, TRUE);
spec = mono_metadata_parse_marshal_spec (m, tp);
marshal_str = dis_stringify_marshal_spec (spec);
}
if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
mono_metadata_field_info (m, i, NULL, &rva, NULL);
g_snprintf (rva_desc, sizeof (rva_desc), " at D_%08x", rva);
} else {
rva_desc [0] = 0;
}
mono_metadata_field_info (m, i, &field_offset, NULL, NULL);
if (field_offset != -1)
attrs = g_strdup_printf ("[%d]", field_offset);
esname = get_escaped_name (mono_metadata_string_heap (m, cols [MONO_FIELD_NAME]));
if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_HAS_DEFAULT){
char *lit;
guint32 const_cols [MONO_CONSTANT_SIZE];
guint32 crow;
if ((crow = mono_metadata_get_constant_index (m, MONO_TOKEN_FIELD_DEF | (i+1), 0))) {
mono_metadata_decode_row (&m->tables [MONO_TABLE_CONSTANT], crow-1, const_cols, MONO_CONSTANT_SIZE);
lit = get_constant (m, const_cols [MONO_CONSTANT_TYPE], const_cols [MONO_CONSTANT_VALUE]);
} else {
lit = g_strdup ("not found");
}
fprintf (output, " .field %s%s%s %s = ",
flags, marshal_str ? marshal_str : " ", sig, esname);
fprintf (output, "%s\n", lit);
g_free (lit);
} else
fprintf (output, " .field %s %s%s%s %s%s\n",
attrs? attrs: "", flags, marshal_str ? marshal_str : " ", sig, esname, rva_desc);
g_free (attrs);
g_free (flags);
g_free (marshal_str);
g_free (sig);
g_free (esname);
dump_cattrs (m, MONO_TOKEN_FIELD_DEF | (i + 1), " ");
}
}
static dis_map_t method_access_map [] = {
{ METHOD_ATTRIBUTE_COMPILER_CONTROLLED, "privatescope " },
{ METHOD_ATTRIBUTE_PRIVATE, "private " },
{ METHOD_ATTRIBUTE_FAM_AND_ASSEM, "famandassem " },
{ METHOD_ATTRIBUTE_ASSEM, "assembly " },
{ METHOD_ATTRIBUTE_FAMILY, "family " },
{ METHOD_ATTRIBUTE_FAM_OR_ASSEM, "famorassem " },
{ METHOD_ATTRIBUTE_PUBLIC, "public " },
{ 0, NULL }
};
static dis_map_t method_flags_map [] = {
{ METHOD_ATTRIBUTE_STATIC, "static " },
{ METHOD_ATTRIBUTE_FINAL, "final " },
{ METHOD_ATTRIBUTE_VIRTUAL, "virtual " },
{ METHOD_ATTRIBUTE_HIDE_BY_SIG, "hidebysig " },
{ METHOD_ATTRIBUTE_VTABLE_LAYOUT_MASK, "newslot " },
{ METHOD_ATTRIBUTE_ABSTRACT, "abstract " },
{ METHOD_ATTRIBUTE_SPECIAL_NAME, "specialname " },
{ METHOD_ATTRIBUTE_RT_SPECIAL_NAME, "rtspecialname " },
{ METHOD_ATTRIBUTE_UNMANAGED_EXPORT, "export " },
/* MS ilasm doesn't compile this statement - is must be added automagically when permissionset are present */
/* { METHOD_ATTRIBUTE_HAS_SECURITY, "hassecurity" }, */
{ METHOD_ATTRIBUTE_REQUIRE_SEC_OBJECT, "requiresecobj" },
{ METHOD_ATTRIBUTE_PINVOKE_IMPL, "pinvokeimpl " },
{ 0, NULL }
};
/**
* method_flags:
*
* Returns a stringified version of the Method's flags
*/
static char *
method_flags (guint32 f)
{
GString *str = g_string_new ("");
int access = f & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK;
char *s;
g_string_append (str, map (access, method_access_map));
g_string_append (str, flags (f, method_flags_map));
s = str->str;
g_string_free (str, FALSE);
return s;
}
static dis_map_t pinvoke_flags_map [] = {
{ PINVOKE_ATTRIBUTE_NO_MANGLE , "nomangle " },
{ PINVOKE_ATTRIBUTE_SUPPORTS_LAST_ERROR, "lasterr " },
{ PINVOKE_ATTRIBUTE_BEST_FIT_ENABLED, "bestfit:on" },
{ PINVOKE_ATTRIBUTE_BEST_FIT_DISABLED, "bestfit:off" },
{ PINVOKE_ATTRIBUTE_THROW_ON_UNMAPPABLE_ENABLED, "charmaperror:on" },
{ PINVOKE_ATTRIBUTE_THROW_ON_UNMAPPABLE_DISABLED, "charmaperror:off" },
{ 0, NULL }
};
static dis_map_t pinvoke_call_conv_map [] = {
{ PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI, "winapi " },
{ PINVOKE_ATTRIBUTE_CALL_CONV_CDECL, "cdecl " },
{ PINVOKE_ATTRIBUTE_CALL_CONV_STDCALL, "stdcall " },
{ PINVOKE_ATTRIBUTE_CALL_CONV_THISCALL, "thiscall " },
{ PINVOKE_ATTRIBUTE_CALL_CONV_FASTCALL, "fastcall " },
{ 0, "" },
{ -1, NULL }
};
static dis_map_t pinvoke_char_set_map [] = {
{ PINVOKE_ATTRIBUTE_CHAR_SET_NOT_SPEC, "" },
{ PINVOKE_ATTRIBUTE_CHAR_SET_ANSI, "ansi " },
{ PINVOKE_ATTRIBUTE_CHAR_SET_UNICODE , "unicode " },
{ PINVOKE_ATTRIBUTE_CHAR_SET_AUTO, "autochar " },
{ 0, NULL }
};
/**
* pinvoke_flags:
*
* Returns a stringified version of the Method's pinvoke flags
*/
static char *
pinvoke_flags (guint32 f)
{
GString *str = g_string_new ("");
int cset = f & PINVOKE_ATTRIBUTE_CHAR_SET_MASK;
int cconv = f & PINVOKE_ATTRIBUTE_CALL_CONV_MASK;
char *s;
g_string_append (str, map (cset, pinvoke_char_set_map));
g_string_append (str, map (cconv, pinvoke_call_conv_map));
g_string_append (str, flags (f, pinvoke_flags_map));
s = g_strdup(str->str);
g_string_free (str, FALSE);
return s;
}
static dis_map_t method_impl_map [] = {
{ METHOD_IMPL_ATTRIBUTE_IL, "cil " },
{ METHOD_IMPL_ATTRIBUTE_NATIVE, "native " },
{ METHOD_IMPL_ATTRIBUTE_OPTIL, "optil " },
{ METHOD_IMPL_ATTRIBUTE_RUNTIME, "runtime " },
{ 0, NULL }
};
static dis_map_t managed_type_map [] = {
{ METHOD_IMPL_ATTRIBUTE_UNMANAGED, "unmanaged " },
{ METHOD_IMPL_ATTRIBUTE_MANAGED, "managed " },
{ 0, NULL }
};
static dis_map_t managed_impl_flags [] = {
{ METHOD_IMPL_ATTRIBUTE_FORWARD_REF, "fwdref " },
{ METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG, "preservesig " },
{ METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL, "internalcall " },
{ METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED, "synchronized " },
{ METHOD_IMPL_ATTRIBUTE_NOINLINING, "noinlining " },
{ 0, NULL }
};
static char *
method_impl_flags (guint32 f)
{
GString *str = g_string_new ("");
char *s;
int code_type = f & METHOD_IMPL_ATTRIBUTE_CODE_TYPE_MASK;
int managed_type = f & METHOD_IMPL_ATTRIBUTE_MANAGED_MASK;
g_string_append (str, map (code_type, method_impl_map));
g_string_append (str, map (managed_type, managed_type_map));
g_string_append (str, flags (f, managed_impl_flags));
s = str->str;
g_string_free (str, FALSE);
return s;
}
static void
dis_locals (MonoImage *m, MonoMethodHeader *mh, const char *ptr)
{
int i;
if (show_tokens) {
unsigned char flags = *(const unsigned char *) ptr;
unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
guint16 fat_flags;
guint32 local_var_sig_tok, max_stack, code_size, init_locals;
int hsize;
g_assert (format == METHOD_HEADER_FAT_FORMAT);
fat_flags = read16 (ptr);
ptr += 2;
hsize = (fat_flags >> 12) & 0xf;
max_stack = read16 (ptr);
ptr += 2;
code_size = read32 (ptr);
ptr += 4;
local_var_sig_tok = read32 (ptr);
ptr += 4;
if (fat_flags & METHOD_HEADER_INIT_LOCALS)
init_locals = 1;
else
init_locals = 0;
fprintf(output, "\t.locals /*%08x*/ %s(\n",
local_var_sig_tok, init_locals ? "init " : "");
} else
fprintf(output, "\t.locals %s(\n", mh->init_locals ? "init " : "");
for (i=0; i < mh->num_locals; ++i) {
char * desc;
if (i)
fprintf(output, ",\n");
/* print also byref and pinned attributes */
desc = dis_stringify_type (m, mh->locals[i], TRUE);
fprintf(output, "\t\t%s\tV_%d", desc, i);
g_free(desc);
}
fprintf(output, ")\n");
}
static void
dis_code (MonoImage *m, guint32 token, guint32 rva, MonoGenericContainer *container)
{
MonoMethodHeader *mh;
const char *ptr = mono_image_rva_map (m, rva);
const char *loc;
gchar *override;
guint32 entry_point;
if (rva == 0)
return;
override = get_method_override (m, token, container);
if (override) {
fprintf (output, "\t.override %s\n", override);
g_free (override);
}
mh = mono_metadata_parse_mh_full (m, container, ptr);
if ((entry_point = mono_image_get_entry_point (m)) && mono_metadata_token_index (entry_point)){
loc = mono_metadata_locate_token (m, entry_point);
if (rva == read32 (loc))
fprintf (output, "\t.entrypoint\n");
}
if (mh) {
fprintf (output, "\t// Code size %d (0x%x)\n", mh->code_size, mh->code_size);
fprintf (output, "\t.maxstack %d\n", mh->max_stack);
if (mh->num_locals)
dis_locals (m, mh, ptr);
disassemble_cil (m, mh, container);
/*
hex_dump (mh->code, 0, mh->code_size);
printf ("\nAfter the code\n");
hex_dump (mh->code + mh->code_size, 0, 64);
*/
mono_metadata_free_mh (mh);
}
}
static char *
pinvoke_info (MonoImage *m, guint32 mindex)
{
MonoTableInfo *im = &m->tables [MONO_TABLE_IMPLMAP];
MonoTableInfo *mr = &m->tables [MONO_TABLE_MODULEREF];
guint32 im_cols [MONO_IMPLMAP_SIZE];
guint32 mr_cols [MONO_MODULEREF_SIZE];
const char *import, *scope;
char *flags;
int i;
for (i = 0; i < im->rows; i++) {
mono_metadata_decode_row (im, i, im_cols, MONO_IMPLMAP_SIZE);
if ((im_cols [MONO_IMPLMAP_MEMBER] >> 1) == mindex + 1) {
flags = pinvoke_flags (im_cols [MONO_IMPLMAP_FLAGS]);
import = mono_metadata_string_heap (m, im_cols [MONO_IMPLMAP_NAME]);
mono_metadata_decode_row (mr, im_cols [MONO_IMPLMAP_SCOPE] - 1,
mr_cols, MONO_MODULEREF_SIZE);
scope = mono_metadata_string_heap (m, mr_cols [MONO_MODULEREF_NAME]);
return g_strdup_printf ("(\"%s\" as \"%s\" %s)", scope, import,
flags);
g_free (flags);
}
}
return NULL;
}
/*
* dump_cattrs_for_type_params
*
* @m:
* @token: TypeOrMethodDef token, owner for GenericParam
*
* Dumps the custom attributes for @token's type parameters
*/
static void
dump_cattrs_for_type_params (MonoImage *m, guint32 token, const char *indent)
{
MonoTableInfo *tdef = &m->tables [MONO_TABLE_GENERICPARAM];
guint32 cols [MONO_GENERICPARAM_SIZE];
guint32 owner = 0, i;
GList *list = NULL;
if (! (i = mono_metadata_get_generic_param_row (m, token, &owner)))
return;
mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
do {
list = dis_get_custom_attrs (m, mono_metadata_make_token (MONO_TABLE_GENERICPARAM, i));
if (list) {
fprintf (output, "%s.param type %s\n", indent, mono_metadata_string_heap (m, cols [MONO_GENERICPARAM_NAME]));
dump_cattrs_list (list, indent);
}
if (++i > tdef->rows)
break;
mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
} while (cols [MONO_GENERICPARAM_OWNER] == owner);
}
static void
dump_cattrs_for_method_params (MonoImage *m, guint32 midx, MonoMethodSignature *sig) {
MonoTableInfo *methodt;
MonoTableInfo *paramt;
guint param_index, lastp, i;
methodt = &m->tables [MONO_TABLE_METHOD];
paramt = &m->tables [MONO_TABLE_PARAM];
param_index = mono_metadata_decode_row_col (methodt, midx, MONO_METHOD_PARAMLIST);
if (midx + 1 < methodt->rows)
lastp = mono_metadata_decode_row_col (methodt, midx + 1, MONO_METHOD_PARAMLIST);
else
lastp = paramt->rows + 1;
for (i = param_index; i < lastp; ++i) {
char *lit;
int crow;
guint32 param_cols [MONO_PARAM_SIZE];
GList *list;
list = dis_get_custom_attrs (m, MONO_TOKEN_PARAM_DEF | i);
mono_metadata_decode_row (paramt, i-1, param_cols, MONO_PARAM_SIZE);
if (!(param_cols[MONO_PARAM_FLAGS] & PARAM_ATTRIBUTE_HAS_DEFAULT)) {
if(list != NULL)
fprintf (output, "\t.param [%d]\n", param_cols[MONO_PARAM_SEQUENCE]);
} else {
fprintf (output, "\t.param [%d] = ", param_cols[MONO_PARAM_SEQUENCE]);
if ((crow = mono_metadata_get_constant_index(m, MONO_TOKEN_PARAM_DEF | i, 0))) {
guint32 const_cols [MONO_CONSTANT_SIZE];
mono_metadata_decode_row( &m->tables[MONO_TABLE_CONSTANT], crow-1, const_cols, MONO_CONSTANT_SIZE);
lit = get_constant(m, const_cols [MONO_CONSTANT_TYPE], const_cols [MONO_CONSTANT_VALUE]);
}
else {
lit = g_strdup ("not found");
}
fprintf(output, "%s\n", lit);
g_free(lit);
}
dump_cattrs_list (list, "\t");
}
}
/**
* dis_method_list:
* @m: metadata context
* @start: starting index into the Method Table.
* @end: ending index into Method table.
*
* This routine displays the methods in the Method Table from @start to @end
*/
static void
dis_method_list (const char *klass_name, MonoImage *m, guint32 start, guint32 end, MonoGenericContainer *type_container)
{
MonoTableInfo *t = &m->tables [MONO_TABLE_METHOD];
guint32 cols [MONO_METHOD_SIZE];
int i;
if (end > t->rows){
fprintf (output, "ERROR index out of range in methods");
/*exit (1);*/
end = t->rows;
}
for (i = start; i < end; i++){
MonoMethodSignature *ms;
MonoGenericContainer *container;
char *flags, *impl_flags;
const char *sig, *method_name;
char *sig_str;
guint32 token;
if (!should_include_method (i + 1))
continue;
mono_metadata_decode_row (t, i, cols, MONO_METHOD_SIZE);
flags = method_flags (cols [MONO_METHOD_FLAGS]);
impl_flags = method_impl_flags (cols [MONO_METHOD_IMPLFLAGS]);
sig = mono_metadata_blob_heap (m, cols [MONO_METHOD_SIGNATURE]);
mono_metadata_decode_blob_size (sig, &sig);
container = mono_metadata_load_generic_params (m, MONO_TOKEN_METHOD_DEF | (i + 1), type_container);
if (container)
mono_metadata_load_generic_param_constraints (m, MONO_TOKEN_METHOD_DEF | (i + 1), container);
else
container = type_container;
ms = mono_metadata_parse_method_signature_full (m, container, i + 1, sig, &sig);
sig_str = dis_stringify_method_signature (m, ms, i + 1, container, FALSE);
method_name = mono_metadata_string_heap (m, cols [MONO_METHOD_NAME]);
fprintf (output, " // method line %d\n", i + 1);
fprintf (output, " .method %s", flags);
if ((cols [MONO_METHOD_FLAGS] & METHOD_ATTRIBUTE_PINVOKE_IMPL) && (cols [MONO_METHOD_RVA] == 0)) {
gchar *pi = pinvoke_info (m, i);
if (pi) {
fprintf (output, "%s", pi);
g_free (pi);
}
}
fprintf (output, "\n %s", sig_str);
fprintf (output, " %s\n", impl_flags);
g_free (flags);
g_free (impl_flags);
token = MONO_TOKEN_METHOD_DEF | (i + 1);
fprintf (output, " {\n");
dump_cattrs (m, token, " ");
dump_cattrs_for_type_params (m, MONO_TOKEN_METHOD_DEF | (i + 1), " ");
dump_cattrs_for_method_params (m, i, ms);
fprintf (output, " // Method begins at RVA 0x%x\n", cols [MONO_METHOD_RVA]);
dump_declarative_security (m, OBJECT_TYPE_METHODDEF, i + 1, " ");
if (cols [MONO_METHOD_IMPLFLAGS] & METHOD_IMPL_ATTRIBUTE_NATIVE)
fprintf (output, " // Disassembly of native methods is not supported\n");
else
dis_code (m, token, cols [MONO_METHOD_RVA], container);
if (klass_name)
fprintf (output, " } // end of method %s::%s\n\n", klass_name, method_name);
else
fprintf (output, " } // end of global method %s\n\n", method_name);
mono_metadata_free_method_signature (ms);
g_free (sig_str);
}
}
typedef struct {
MonoTableInfo *t;
guint32 col_idx;
guint32 idx;
guint32 result;
} plocator_t;
static int
table_locator (const void *a, const void *b)
{
plocator_t *loc = (plocator_t *) a;
const char *bb = (const char *) b;
guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
guint32 col;
col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
if (loc->idx == col) {
loc->result = table_index;
return 0;
}
if (loc->idx < col)
return -1;
else
return 1;
}
static void
dis_property_methods (MonoImage *m, guint32 prop, MonoGenericContainer *container)
{
guint start, end;
MonoTableInfo *msemt = &m->tables [MONO_TABLE_METHODSEMANTICS];
guint32 cols [MONO_METHOD_SEMA_SIZE];
char *sig;
const char *type[] = {NULL, ".set", ".get", NULL, ".other"};
start = mono_metadata_methods_from_property (m, prop, &end);
for (; start < end; ++start) {
mono_metadata_decode_row (msemt, start, cols, MONO_METHOD_SEMA_SIZE);
if (!should_include_method (cols [MONO_METHOD_SEMA_METHOD]))
continue;
sig = dis_stringify_method_signature_full (m, NULL, cols [MONO_METHOD_SEMA_METHOD], container, TRUE, FALSE);
fprintf (output, "\t\t%s %s\n", type [cols [MONO_METHOD_SEMA_SEMANTICS]], sig);
g_free (sig);
}
}
static char*
dis_property_signature (MonoImage *m, guint32 prop_idx, MonoGenericContainer *container)
{
MonoTableInfo *propt = &m->tables [MONO_TABLE_PROPERTY];
const char *ptr;
guint32 pcount, i;
guint32 cols [MONO_PROPERTY_SIZE];
MonoType *type;
MonoType *param;
char *blurb, *qk;
const char *name;
int prop_flags;
GString *res = g_string_new ("");
mono_metadata_decode_row (propt, prop_idx, cols, MONO_PROPERTY_SIZE);
name = mono_metadata_string_heap (m, cols [MONO_PROPERTY_NAME]);