/
reflection.c
9507 lines (8291 loc) · 291 KB
/
reflection.c
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/*
* reflection.c: Routines for creating an image at runtime.
*
* Author:
* Paolo Molaro (lupus@ximian.com)
*
* (C) 2001, 2002 Ximian, Inc. http://www.ximian.com
*
*/
#include <config.h>
#include "mono/utils/mono-digest.h"
#include "mono/metadata/reflection.h"
#include "mono/metadata/tabledefs.h"
#include "mono/metadata/metadata-internals.h"
#include "mono/metadata/class-internals.h"
#include "mono/metadata/tokentype.h"
#include "mono/metadata/domain-internals.h"
#include "mono/metadata/opcodes.h"
#include "mono/metadata/assembly.h"
#include "mono/metadata/object-internals.h"
#include <mono/metadata/exception.h>
#include <mono/metadata/marshal.h>
#include <stdio.h>
#include <glib.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <ctype.h>
#include "image.h"
#include "cil-coff.h"
#include "rawbuffer.h"
#include "mono-endian.h"
#include <mono/os/gc_wrapper.h>
#define TEXT_OFFSET 512
#define CLI_H_SIZE 136
#define FILE_ALIGN 512
#define VIRT_ALIGN 8192
#define START_TEXT_RVA 0x00002000
typedef struct {
MonoReflectionILGen *ilgen;
MonoReflectionType *rtype;
MonoArray *parameters;
MonoArray *generic_params;
MonoGenericContainer *generic_container;
MonoArray *pinfo;
MonoArray *opt_types;
guint32 attrs;
guint32 iattrs;
guint32 call_conv;
guint32 *table_idx; /* note: it's a pointer */
MonoArray *code;
MonoObject *type;
MonoString *name;
MonoBoolean init_locals;
MonoArray *return_modreq;
MonoArray *return_modopt;
MonoArray *param_modreq;
MonoArray *param_modopt;
MonoArray *permissions;
MonoMethod *mhandle;
guint32 nrefs;
gpointer *refs;
/* for PInvoke */
int charset, lasterr, native_cc;
MonoString *dll, *dllentry;
} ReflectionMethodBuilder;
typedef struct {
guint32 owner;
MonoReflectionGenericParam *gparam;
} GenericParamTableEntry;
const unsigned char table_sizes [MONO_TABLE_NUM] = {
MONO_MODULE_SIZE,
MONO_TYPEREF_SIZE,
MONO_TYPEDEF_SIZE,
0,
MONO_FIELD_SIZE,
0,
MONO_METHOD_SIZE,
0,
MONO_PARAM_SIZE,
MONO_INTERFACEIMPL_SIZE,
MONO_MEMBERREF_SIZE, /* 0x0A */
MONO_CONSTANT_SIZE,
MONO_CUSTOM_ATTR_SIZE,
MONO_FIELD_MARSHAL_SIZE,
MONO_DECL_SECURITY_SIZE,
MONO_CLASS_LAYOUT_SIZE,
MONO_FIELD_LAYOUT_SIZE, /* 0x10 */
MONO_STAND_ALONE_SIGNATURE_SIZE,
MONO_EVENT_MAP_SIZE,
0,
MONO_EVENT_SIZE,
MONO_PROPERTY_MAP_SIZE,
0,
MONO_PROPERTY_SIZE,
MONO_METHOD_SEMA_SIZE,
MONO_METHODIMPL_SIZE,
MONO_MODULEREF_SIZE, /* 0x1A */
MONO_TYPESPEC_SIZE,
MONO_IMPLMAP_SIZE,
MONO_FIELD_RVA_SIZE,
0,
0,
MONO_ASSEMBLY_SIZE, /* 0x20 */
MONO_ASSEMBLY_PROCESSOR_SIZE,
MONO_ASSEMBLYOS_SIZE,
MONO_ASSEMBLYREF_SIZE,
MONO_ASSEMBLYREFPROC_SIZE,
MONO_ASSEMBLYREFOS_SIZE,
MONO_FILE_SIZE,
MONO_EXP_TYPE_SIZE,
MONO_MANIFEST_SIZE,
MONO_NESTED_CLASS_SIZE,
MONO_GENERICPARAM_SIZE, /* 0x2A */
MONO_METHODSPEC_SIZE,
MONO_GENPARCONSTRAINT_SIZE
};
static void reflection_methodbuilder_from_method_builder (ReflectionMethodBuilder *rmb, MonoReflectionMethodBuilder *mb);
static void reflection_methodbuilder_from_ctor_builder (ReflectionMethodBuilder *rmb, MonoReflectionCtorBuilder *mb);
static guint32 mono_image_typedef_or_ref (MonoDynamicImage *assembly, MonoType *type);
static guint32 mono_image_get_methodref_token (MonoDynamicImage *assembly, MonoMethod *method);
static guint32 mono_image_get_methodbuilder_token (MonoDynamicImage *assembly, MonoReflectionMethodBuilder *mb);
static guint32 mono_image_get_ctorbuilder_token (MonoDynamicImage *assembly, MonoReflectionCtorBuilder *cb);
static guint32 mono_image_get_sighelper_token (MonoDynamicImage *assembly, MonoReflectionSigHelper *helper);
static void mono_image_get_generic_param_info (MonoReflectionGenericParam *gparam, guint32 owner, MonoDynamicImage *assembly);
static guint32 encode_marshal_blob (MonoDynamicImage *assembly, MonoReflectionMarshal *minfo);
static guint32 encode_constant (MonoDynamicImage *assembly, MonoObject *val, guint32 *ret_type);
static char* type_get_qualified_name (MonoType *type, MonoAssembly *ass);
static void ensure_runtime_vtable (MonoClass *klass);
static gpointer resolve_object (MonoImage *image, MonoObject *obj, MonoClass **handle_class);
static void encode_type (MonoDynamicImage *assembly, MonoType *type, char *p, char **endbuf);
static guint32 type_get_signature_size (MonoType *type);
static void get_default_param_value_blobs (MonoMethod *method, char **blobs, guint32 *types);
static MonoObject *mono_get_object_from_blob (MonoDomain *domain, MonoType *type, const char *blob);
static void
alloc_table (MonoDynamicTable *table, guint nrows)
{
table->rows = nrows;
g_assert (table->columns);
if (nrows + 1 >= table->alloc_rows) {
while (nrows + 1 >= table->alloc_rows) {
if (table->alloc_rows == 0)
table->alloc_rows = 16;
else
table->alloc_rows *= 2;
}
table->values = g_renew (guint32, table->values, (table->alloc_rows) * table->columns);
}
}
static void
make_room_in_stream (MonoDynamicStream *stream, int size)
{
if (size <= stream->alloc_size)
return;
while (stream->alloc_size <= size) {
if (stream->alloc_size < 4096)
stream->alloc_size = 4096;
else
stream->alloc_size *= 2;
}
stream->data = g_realloc (stream->data, stream->alloc_size);
}
static guint32
string_heap_insert (MonoDynamicStream *sh, const char *str)
{
guint32 idx;
guint32 len;
gpointer oldkey, oldval;
if (g_hash_table_lookup_extended (sh->hash, str, &oldkey, &oldval))
return GPOINTER_TO_UINT (oldval);
len = strlen (str) + 1;
idx = sh->index;
make_room_in_stream (sh, idx + len);
/*
* We strdup the string even if we already copy them in sh->data
* so that the string pointers in the hash remain valid even if
* we need to realloc sh->data. We may want to avoid that later.
*/
g_hash_table_insert (sh->hash, g_strdup (str), GUINT_TO_POINTER (idx));
memcpy (sh->data + idx, str, len);
sh->index += len;
return idx;
}
static void
string_heap_init (MonoDynamicStream *sh)
{
sh->index = 0;
sh->alloc_size = 4096;
sh->data = g_malloc (4096);
sh->hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
string_heap_insert (sh, "");
}
static guint32
mono_image_add_stream_data (MonoDynamicStream *stream, const char *data, guint32 len)
{
guint32 idx;
make_room_in_stream (stream, stream->index + len);
memcpy (stream->data + stream->index, data, len);
idx = stream->index;
stream->index += len;
/*
* align index? Not without adding an additional param that controls it since
* we may store a blob value in pieces.
*/
return idx;
}
static guint32
mono_image_add_stream_zero (MonoDynamicStream *stream, guint32 len)
{
guint32 idx;
make_room_in_stream (stream, stream->index + len);
memset (stream->data + stream->index, 0, len);
idx = stream->index;
stream->index += len;
return idx;
}
static void
stream_data_align (MonoDynamicStream *stream)
{
char buf [4] = {0};
guint32 count = stream->index % 4;
/* we assume the stream data will be aligned */
if (count)
mono_image_add_stream_data (stream, buf, 4 - count);
}
static int
mono_blob_entry_hash (const char* str)
{
guint len, h;
const char *end;
len = mono_metadata_decode_blob_size (str, &str);
if (len > 0) {
end = str + len;
h = *str;
for (str += 1; str < end; str++)
h = (h << 5) - h + *str;
return h;
} else {
return 0;
}
}
static gboolean
mono_blob_entry_equal (const char *str1, const char *str2) {
int len, len2;
const char *end1;
const char *end2;
len = mono_metadata_decode_blob_size (str1, &end1);
len2 = mono_metadata_decode_blob_size (str2, &end2);
if (len != len2)
return 0;
return memcmp (end1, end2, len) == 0;
}
static guint32
add_to_blob_cached (MonoDynamicImage *assembly, char *b1, int s1, char *b2, int s2)
{
guint32 idx;
char *copy;
gpointer oldkey, oldval;
copy = g_malloc (s1+s2);
memcpy (copy, b1, s1);
memcpy (copy + s1, b2, s2);
if (g_hash_table_lookup_extended (assembly->blob_cache, copy, &oldkey, &oldval)) {
g_free (copy);
idx = GPOINTER_TO_UINT (oldval);
} else {
idx = mono_image_add_stream_data (&assembly->blob, b1, s1);
mono_image_add_stream_data (&assembly->blob, b2, s2);
g_hash_table_insert (assembly->blob_cache, copy, GUINT_TO_POINTER (idx));
}
return idx;
}
/*
* Copy len * nelem bytes from val to dest, swapping bytes to LE if necessary.
* dest may be misaligned.
*/
static void
swap_with_size (char *dest, const char* val, int len, int nelem) {
#if G_BYTE_ORDER != G_LITTLE_ENDIAN
int elem;
for (elem = 0; elem < nelem; ++elem) {
switch (len) {
case 1:
*dest = *val;
break;
case 2:
dest [0] = val [1];
dest [1] = val [0];
break;
case 4:
dest [0] = val [3];
dest [1] = val [2];
dest [2] = val [1];
dest [3] = val [0];
break;
case 8:
dest [0] = val [7];
dest [1] = val [6];
dest [2] = val [5];
dest [3] = val [4];
dest [4] = val [3];
dest [5] = val [2];
dest [6] = val [1];
dest [7] = val [0];
break;
default:
g_assert_not_reached ();
}
dest += len;
val += len;
}
#else
memcpy (dest, val, len * nelem);
#endif
}
static guint32
add_mono_string_to_blob_cached (MonoDynamicImage *assembly, MonoString *str)
{
char blob_size [64];
char *b = blob_size;
guint32 idx = 0, len;
len = str->length * 2;
mono_metadata_encode_value (len, b, &b);
#if G_BYTE_ORDER != G_LITTLE_ENDIAN
{
char *swapped = g_malloc (2 * mono_string_length (str));
const char *p = (const char*)mono_string_chars (str);
swap_with_size (swapped, p, 2, mono_string_length (str));
idx = add_to_blob_cached (assembly, blob_size, b-blob_size, swapped, len);
g_free (swapped);
}
#else
idx = add_to_blob_cached (assembly, blob_size, b-blob_size, (char*)mono_string_chars (str), len);
#endif
return idx;
}
/* modified version needed to handle building corlib */
static MonoClass*
my_mono_class_from_mono_type (MonoType *type) {
switch (type->type) {
case MONO_TYPE_ARRAY:
case MONO_TYPE_PTR:
case MONO_TYPE_SZARRAY:
case MONO_TYPE_GENERICINST:
return mono_class_from_mono_type (type);
case MONO_TYPE_VAR:
case MONO_TYPE_MVAR:
g_assert (type->data.generic_param->pklass);
return type->data.generic_param->pklass;
default:
/* should be always valid when we reach this case... */
return type->data.klass;
}
}
static MonoClass *
default_class_from_mono_type (MonoType *type)
{
switch (type->type) {
case MONO_TYPE_OBJECT:
return mono_defaults.object_class;
case MONO_TYPE_VOID:
return mono_defaults.void_class;
case MONO_TYPE_BOOLEAN:
return mono_defaults.boolean_class;
case MONO_TYPE_CHAR:
return mono_defaults.char_class;
case MONO_TYPE_I1:
return mono_defaults.sbyte_class;
case MONO_TYPE_U1:
return mono_defaults.byte_class;
case MONO_TYPE_I2:
return mono_defaults.int16_class;
case MONO_TYPE_U2:
return mono_defaults.uint16_class;
case MONO_TYPE_I4:
return mono_defaults.int32_class;
case MONO_TYPE_U4:
return mono_defaults.uint32_class;
case MONO_TYPE_I:
return mono_defaults.int_class;
case MONO_TYPE_U:
return mono_defaults.uint_class;
case MONO_TYPE_I8:
return mono_defaults.int64_class;
case MONO_TYPE_U8:
return mono_defaults.uint64_class;
case MONO_TYPE_R4:
return mono_defaults.single_class;
case MONO_TYPE_R8:
return mono_defaults.double_class;
case MONO_TYPE_STRING:
return mono_defaults.string_class;
default:
g_warning ("implement me 0x%02x\n", type->type);
g_assert_not_reached ();
}
return NULL;
}
static void
encode_generic_class (MonoDynamicImage *assembly, MonoGenericClass *gclass, char *p, char **endbuf)
{
int i;
if (!gclass) {
g_assert_not_reached ();
return;
}
mono_metadata_encode_value (MONO_TYPE_GENERICINST, p, &p);
encode_type (assembly, &gclass->container_class->byval_arg, p, &p);
mono_metadata_encode_value (gclass->inst->type_argc, p, &p);
for (i = 0; i < gclass->inst->type_argc; ++i)
encode_type (assembly, gclass->inst->type_argv [i], p, &p);
*endbuf = p;
}
static void
encode_type (MonoDynamicImage *assembly, MonoType *type, char *p, char **endbuf)
{
if (!type) {
g_assert_not_reached ();
return;
}
if (type->byref)
mono_metadata_encode_value (MONO_TYPE_BYREF, p, &p);
switch (type->type){
case MONO_TYPE_VOID:
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_CHAR:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
case MONO_TYPE_I8:
case MONO_TYPE_U8:
case MONO_TYPE_R4:
case MONO_TYPE_R8:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_STRING:
case MONO_TYPE_OBJECT:
case MONO_TYPE_TYPEDBYREF:
mono_metadata_encode_value (type->type, p, &p);
break;
case MONO_TYPE_PTR:
mono_metadata_encode_value (type->type, p, &p);
encode_type (assembly, type->data.type, p, &p);
break;
case MONO_TYPE_SZARRAY:
mono_metadata_encode_value (type->type, p, &p);
encode_type (assembly, &type->data.klass->byval_arg, p, &p);
break;
case MONO_TYPE_VALUETYPE:
case MONO_TYPE_CLASS: {
MonoClass *k = mono_class_from_mono_type (type);
mono_metadata_encode_value (type->type, p, &p);
/*
* ensure only non-byref gets passed to mono_image_typedef_or_ref(),
* otherwise two typerefs could point to the same type, leading to
* verification errors.
*/
mono_metadata_encode_value (mono_image_typedef_or_ref (assembly, &k->byval_arg), p, &p);
break;
}
case MONO_TYPE_ARRAY:
mono_metadata_encode_value (type->type, p, &p);
encode_type (assembly, &type->data.array->eklass->byval_arg, p, &p);
mono_metadata_encode_value (type->data.array->rank, p, &p);
mono_metadata_encode_value (0, p, &p); /* FIXME: set to 0 for now */
mono_metadata_encode_value (0, p, &p);
break;
case MONO_TYPE_GENERICINST:
encode_generic_class (assembly, type->data.generic_class, p, &p);
break;
case MONO_TYPE_VAR:
case MONO_TYPE_MVAR:
mono_metadata_encode_value (type->type, p, &p);
mono_metadata_encode_value (type->data.generic_param->num, p, &p);
break;
default:
g_error ("need to encode type %x", type->type);
}
*endbuf = p;
}
static void
encode_reflection_type (MonoDynamicImage *assembly, MonoReflectionType *type, char *p, char **endbuf)
{
if (!type) {
mono_metadata_encode_value (MONO_TYPE_VOID, p, endbuf);
return;
}
if (type->type) {
encode_type (assembly, type->type, p, endbuf);
return;
}
g_assert_not_reached ();
}
static void
encode_custom_modifiers (MonoDynamicImage *assembly, MonoArray *modreq, MonoArray *modopt, char *p, char **endbuf)
{
int i;
if (modreq) {
for (i = 0; i < mono_array_length (modreq); ++i) {
MonoReflectionType *mod = mono_array_get (modreq, MonoReflectionType*, i);
*p = MONO_TYPE_CMOD_REQD;
p++;
mono_metadata_encode_value (mono_image_typedef_or_ref (assembly, mod->type), p, &p);
}
}
if (modopt) {
for (i = 0; i < mono_array_length (modopt); ++i) {
MonoReflectionType *mod = mono_array_get (modopt, MonoReflectionType*, i);
*p = MONO_TYPE_CMOD_OPT;
p++;
mono_metadata_encode_value (mono_image_typedef_or_ref (assembly, mod->type), p, &p);
}
}
*endbuf = p;
}
static guint32
generic_class_get_signature_size (MonoGenericClass *gclass)
{
guint32 size = 0;
int i;
if (!gclass) {
g_assert_not_reached ();
}
size += 1 + type_get_signature_size (&gclass->container_class->byval_arg);
size += 4;
for (i = 0; i < gclass->inst->type_argc; ++i)
size += type_get_signature_size (gclass->inst->type_argv [i]);
return size;
}
static guint32
type_get_signature_size (MonoType *type)
{
guint32 size = 0;
if (!type) {
g_assert_not_reached ();
}
if (type->byref)
size++;
switch (type->type){
case MONO_TYPE_VOID:
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_CHAR:
case MONO_TYPE_I1:
case MONO_TYPE_U1:
case MONO_TYPE_I2:
case MONO_TYPE_U2:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
case MONO_TYPE_I8:
case MONO_TYPE_U8:
case MONO_TYPE_R4:
case MONO_TYPE_R8:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_STRING:
case MONO_TYPE_OBJECT:
case MONO_TYPE_TYPEDBYREF:
return size + 1;
case MONO_TYPE_PTR:
return size + 1 + type_get_signature_size (type->data.type);
case MONO_TYPE_SZARRAY:
return size + 1 + type_get_signature_size (&type->data.klass->byval_arg);
case MONO_TYPE_VALUETYPE:
case MONO_TYPE_CLASS:
return size + 5;
case MONO_TYPE_ARRAY:
return size + 7 + type_get_signature_size (&type->data.array->eklass->byval_arg);
case MONO_TYPE_GENERICINST:
return size + generic_class_get_signature_size (type->data.generic_class);
case MONO_TYPE_VAR:
case MONO_TYPE_MVAR:
return size + 5;
default:
g_error ("need to encode type %x", type->type);
return size;
}
}
static guint32
method_get_signature_size (MonoMethodSignature *sig)
{
guint32 size;
int i;
size = type_get_signature_size (sig->ret);
for (i = 0; i < sig->param_count; i++)
size += type_get_signature_size (sig->params [i]);
if (sig->generic_param_count)
size += 4;
if (sig->sentinelpos >= 0)
size++;
return size;
}
static guint32
method_encode_signature (MonoDynamicImage *assembly, MonoMethodSignature *sig)
{
char *buf;
char *p;
int i;
guint32 nparams = sig->param_count;
guint32 size = 11 + method_get_signature_size (sig);
guint32 idx;
char blob_size [6];
char *b = blob_size;
if (!assembly->save)
return 0;
p = buf = g_malloc (size);
/*
* FIXME: vararg, explicit_this, differenc call_conv values...
*/
*p = sig->call_convention;
if (sig->hasthis)
*p |= 0x20; /* hasthis */
if (sig->generic_param_count)
*p |= 0x10; /* generic */
p++;
if (sig->generic_param_count)
mono_metadata_encode_value (sig->generic_param_count, p, &p);
mono_metadata_encode_value (nparams, p, &p);
encode_type (assembly, sig->ret, p, &p);
for (i = 0; i < nparams; ++i) {
if (i == sig->sentinelpos)
*p++ = MONO_TYPE_SENTINEL;
encode_type (assembly, sig->params [i], p, &p);
}
/* store length */
g_assert (p - buf < size);
mono_metadata_encode_value (p-buf, b, &b);
idx = add_to_blob_cached (assembly, blob_size, b-blob_size, buf, p-buf);
g_free (buf);
return idx;
}
static guint32
method_builder_encode_signature (MonoDynamicImage *assembly, ReflectionMethodBuilder *mb)
{
/*
* FIXME: reuse code from method_encode_signature().
*/
char *buf;
char *p;
int i;
guint32 nparams = mb->parameters ? mono_array_length (mb->parameters): 0;
guint32 ngparams = mb->generic_params ? mono_array_length (mb->generic_params): 0;
guint32 notypes = mb->opt_types ? mono_array_length (mb->opt_types): 0;
guint32 size = 21 + nparams * 20 + notypes * 20;
guint32 idx;
char blob_size [6];
char *b = blob_size;
p = buf = g_malloc (size);
/* LAMESPEC: all the call conv spec is foobared */
*p = mb->call_conv & 0x60; /* has-this, explicit-this */
if (mb->call_conv & 2)
*p |= 0x5; /* vararg */
if (!(mb->attrs & METHOD_ATTRIBUTE_STATIC))
*p |= 0x20; /* hasthis */
if (ngparams)
*p |= 0x10; /* generic */
p++;
if (ngparams)
mono_metadata_encode_value (ngparams, p, &p);
mono_metadata_encode_value (nparams + notypes, p, &p);
encode_custom_modifiers (assembly, mb->return_modreq, mb->return_modopt, p, &p);
encode_reflection_type (assembly, mb->rtype, p, &p);
for (i = 0; i < nparams; ++i) {
MonoArray *modreq = NULL;
MonoArray *modopt = NULL;
MonoReflectionType *pt;
if (mb->param_modreq && (i < mono_array_length (mb->param_modreq)))
modreq = mono_array_get (mb->param_modreq, MonoArray*, i);
if (mb->param_modopt && (i < mono_array_length (mb->param_modopt)))
modopt = mono_array_get (mb->param_modopt, MonoArray*, i);
encode_custom_modifiers (assembly, modreq, modopt, p, &p);
pt = mono_array_get (mb->parameters, MonoReflectionType*, i);
encode_reflection_type (assembly, pt, p, &p);
}
if (notypes)
*p++ = MONO_TYPE_SENTINEL;
for (i = 0; i < notypes; ++i) {
MonoReflectionType *pt;
pt = mono_array_get (mb->opt_types, MonoReflectionType*, i);
encode_reflection_type (assembly, pt, p, &p);
}
/* store length */
g_assert (p - buf < size);
mono_metadata_encode_value (p-buf, b, &b);
idx = add_to_blob_cached (assembly, blob_size, b-blob_size, buf, p-buf);
g_free (buf);
return idx;
}
static guint32
encode_locals (MonoDynamicImage *assembly, MonoReflectionILGen *ilgen)
{
MonoDynamicTable *table;
guint32 *values;
char *p;
guint32 idx, sig_idx, size;
guint nl = mono_array_length (ilgen->locals);
char *buf;
char blob_size [6];
char *b = blob_size;
int i;
size = 10 + nl * 10;
p = buf = g_malloc (size);
table = &assembly->tables [MONO_TABLE_STANDALONESIG];
idx = table->next_idx ++;
table->rows ++;
alloc_table (table, table->rows);
values = table->values + idx * MONO_STAND_ALONE_SIGNATURE_SIZE;
mono_metadata_encode_value (0x07, p, &p);
mono_metadata_encode_value (nl, p, &p);
for (i = 0; i < nl; ++i) {
MonoReflectionLocalBuilder *lb = mono_array_get (ilgen->locals, MonoReflectionLocalBuilder*, i);
if (lb->is_pinned)
mono_metadata_encode_value (MONO_TYPE_PINNED, p, &p);
encode_reflection_type (assembly, lb->type, p, &p);
}
g_assert (p - buf < size);
mono_metadata_encode_value (p-buf, b, &b);
sig_idx = add_to_blob_cached (assembly, blob_size, b-blob_size, buf, p-buf);
g_free (buf);
values [MONO_STAND_ALONE_SIGNATURE] = sig_idx;
return idx;
}
static guint32
method_count_clauses (MonoReflectionILGen *ilgen)
{
guint32 num_clauses = 0;
int i;
MonoILExceptionInfo *ex_info;
for (i = 0; i < mono_array_length (ilgen->ex_handlers); ++i) {
ex_info = (MonoILExceptionInfo*)mono_array_addr (ilgen->ex_handlers, MonoILExceptionInfo, i);
if (ex_info->handlers)
num_clauses += mono_array_length (ex_info->handlers);
else
num_clauses++;
}
return num_clauses;
}
static MonoExceptionClause*
method_encode_clauses (MonoDynamicImage *assembly, MonoReflectionILGen *ilgen, guint32 num_clauses)
{
MonoExceptionClause *clauses;
MonoExceptionClause *clause;
MonoILExceptionInfo *ex_info;
MonoILExceptionBlock *ex_block;
guint32 finally_start;
int i, j, clause_index;;
clauses = g_new0 (MonoExceptionClause, num_clauses);
clause_index = 0;
for (i = mono_array_length (ilgen->ex_handlers) - 1; i >= 0; --i) {
ex_info = (MonoILExceptionInfo*)mono_array_addr (ilgen->ex_handlers, MonoILExceptionInfo, i);
finally_start = ex_info->start + ex_info->len;
g_assert (ex_info->handlers);
for (j = 0; j < mono_array_length (ex_info->handlers); ++j) {
ex_block = (MonoILExceptionBlock*)mono_array_addr (ex_info->handlers, MonoILExceptionBlock, j);
clause = &(clauses [clause_index]);
clause->flags = ex_block->type;
clause->try_offset = ex_info->start;
if (ex_block->type == MONO_EXCEPTION_CLAUSE_FINALLY)
clause->try_len = finally_start - ex_info->start;
else
clause->try_len = ex_info->len;
clause->handler_offset = ex_block->start;
clause->handler_len = ex_block->len;
if (ex_block->extype) {
clause->data.catch_class = mono_class_from_mono_type (ex_block->extype->type);
} else {
/* FIXME: handle filters */
clause->data.filter_offset = 0;
}
finally_start = ex_block->start + ex_block->len;
clause_index ++;
}
}
return clauses;
}
static guint32
method_encode_code (MonoDynamicImage *assembly, ReflectionMethodBuilder *mb)
{
char flags = 0;
guint32 idx;
guint32 code_size;
gint32 max_stack, i;
gint32 num_locals = 0;
gint32 num_exception = 0;
gint maybe_small;
guint32 fat_flags;
char fat_header [12];
guint32 *intp;
guint16 *shortp;
guint32 local_sig = 0;
guint32 header_size = 12;
MonoArray *code;
if ((mb->attrs & (METHOD_ATTRIBUTE_PINVOKE_IMPL | METHOD_ATTRIBUTE_ABSTRACT)) ||
(mb->iattrs & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)))
return 0;
/*if (mb->name)
g_print ("Encode method %s\n", mono_string_to_utf8 (mb->name));*/
if (mb->ilgen) {
code = mb->ilgen->code;
code_size = mb->ilgen->code_len;
max_stack = mb->ilgen->max_stack;
num_locals = mb->ilgen->locals ? mono_array_length (mb->ilgen->locals) : 0;
if (mb->ilgen->ex_handlers)
num_exception = method_count_clauses (mb->ilgen);
} else {
code = mb->code;
if (code == NULL){
char *name = mono_string_to_utf8 (mb->name);
char *str = g_strdup_printf ("Method %s does not have any IL associated", name);
MonoException *exception = mono_get_exception_argument (NULL, "a method does not have any IL associated");
g_free (str);
g_free (name);
mono_raise_exception (exception);
}
code_size = mono_array_length (code);
max_stack = 8; /* we probably need to run a verifier on the code... */
}
stream_data_align (&assembly->code);
/* check for exceptions, maxstack, locals */
maybe_small = (max_stack <= 8) && (!num_locals) && (!num_exception);
if (maybe_small) {
if (code_size < 64 && !(code_size & 1)) {
flags = (code_size << 2) | 0x2;
} else if (code_size < 32 && (code_size & 1)) {
flags = (code_size << 2) | 0x6; /* LAMESPEC: see metadata.c */
} else {
goto fat_header;
}
idx = mono_image_add_stream_data (&assembly->code, &flags, 1);
/* add to the fixup todo list */
if (mb->ilgen && mb->ilgen->num_token_fixups)
mono_g_hash_table_insert (assembly->token_fixups, mb->ilgen, GUINT_TO_POINTER (idx + 1));
mono_image_add_stream_data (&assembly->code, mono_array_addr (code, char, 0), code_size);
return assembly->text_rva + idx;
}
fat_header:
if (num_locals)
local_sig = MONO_TOKEN_SIGNATURE | encode_locals (assembly, mb->ilgen);
/*
* FIXME: need to set also the header size in fat_flags.
* (and more sects and init locals flags)
*/
fat_flags = 0x03;
if (num_exception)
fat_flags |= METHOD_HEADER_MORE_SECTS;
if (mb->init_locals)
fat_flags |= METHOD_HEADER_INIT_LOCALS;
fat_header [0] = fat_flags;
fat_header [1] = (header_size / 4 ) << 4;
shortp = (guint16*)(fat_header + 2);
*shortp = GUINT16_TO_LE (max_stack);
intp = (guint32*)(fat_header + 4);
*intp = GUINT32_TO_LE (code_size);
intp = (guint32*)(fat_header + 8);
*intp = GUINT32_TO_LE (local_sig);
idx = mono_image_add_stream_data (&assembly->code, fat_header, 12);
/* add to the fixup todo list */
if (mb->ilgen && mb->ilgen->num_token_fixups)
mono_g_hash_table_insert (assembly->token_fixups, mb->ilgen, GUINT_TO_POINTER (idx + 12));
mono_image_add_stream_data (&assembly->code, mono_array_addr (code, char, 0), code_size);
if (num_exception) {
unsigned char sheader [4];
MonoILExceptionInfo * ex_info;
MonoILExceptionBlock * ex_block;
int j;
stream_data_align (&assembly->code);
/* always use fat format for now */
sheader [0] = METHOD_HEADER_SECTION_FAT_FORMAT | METHOD_HEADER_SECTION_EHTABLE;
num_exception *= 6 * sizeof (guint32);
num_exception += 4; /* include the size of the header */
sheader [1] = num_exception & 0xff;
sheader [2] = (num_exception >> 8) & 0xff;
sheader [3] = (num_exception >> 16) & 0xff;
mono_image_add_stream_data (&assembly->code, sheader, 4);
/* fat header, so we are already aligned */
/* reverse order */
for (i = mono_array_length (mb->ilgen->ex_handlers) - 1; i >= 0; --i) {
ex_info = (MonoILExceptionInfo *)mono_array_addr (mb->ilgen->ex_handlers, MonoILExceptionInfo, i);
if (ex_info->handlers) {
int finally_start = ex_info->start + ex_info->len;
for (j = 0; j < mono_array_length (ex_info->handlers); ++j) {
guint32 val;
ex_block = (MonoILExceptionBlock*)mono_array_addr (ex_info->handlers, MonoILExceptionBlock, j);
/* the flags */
val = GUINT32_TO_LE (ex_block->type);
mono_image_add_stream_data (&assembly->code, (char*)&val, sizeof (guint32));
/* try offset */
val = GUINT32_TO_LE (ex_info->start);
mono_image_add_stream_data (&assembly->code, (char*)&val, sizeof (guint32));
/* need fault, too, probably */
if (ex_block->type == MONO_EXCEPTION_CLAUSE_FINALLY)
val = GUINT32_TO_LE (finally_start - ex_info->start);
else
val = GUINT32_TO_LE (ex_info->len);
mono_image_add_stream_data (&assembly->code, (char*)&val, sizeof (guint32));
/* handler offset */
val = GUINT32_TO_LE (ex_block->start);
mono_image_add_stream_data (&assembly->code, (char*)&val, sizeof (guint32));
/* handler len */
val = GUINT32_TO_LE (ex_block->len);
mono_image_add_stream_data (&assembly->code, (char*)&val, sizeof (guint32));
finally_start = ex_block->start + ex_block->len;
if (ex_block->extype) {
val = mono_metadata_token_from_dor (mono_image_typedef_or_ref (assembly, ex_block->extype->type));
} else {