search_result DoLookupSym( imp_image_handle *ii,
symbol_source ss, void *source, lookup_item *li,
location_context *lc, void *d )
{
int (*cmp)(const void *, const void *, size_t);
msym_sym *s;
source = source;
switch( ss ) {
case SS_MODULE:
case SS_SCOPED:
break;
default:
return( SR_NONE );
}
if( li->type != ST_NONE ) return( SR_NONE );
if( li->scope.start != NULL ) return( SR_NONE );
if( li->case_sensitive ) {
cmp = memcmp;
} else {
cmp = memicmp;
}
for( s = ii->gbl; s != NULL; s = s->next ) {
if( s->len == li->name.len && cmp( s->name, li->name.start, s->len ) == 0 ) {
DCSymCreate( ii, d )->p = s;
return( SR_EXACT );
}
}
return( SR_NONE );
}
static bool AMemLookup( dr_handle var, int index, void *_d )
/**********************************************************/
{
type_wlk_lookup *d = _d;
imp_sym_handle *is;
char *name;
unsigned len;
name = DRGetName( var );
if( name == NULL ) {
DCStatus( DS_FAIL );
return( FALSE );
}
len = strlen( name );
if( len == d->li->name.len && d->comp( name, d->li->name.start, len ) == 0 ) {
is = DCSymCreate( d->com.ii, d->com.d );
SetSymHandle( (type_wlk *)d, is );
is->sym = var;
switch( index ) {
case 0:
is->sclass = SYM_MEM;
break;
case 2:
is->sclass = SYM_MEMVAR; // static member
break;
case 3:
if( DRGetVirtuality( var ) == DR_VIRTUALITY_VIRTUAL ) {
is->sclass = SYM_VIRTF; // virtual func
} else if( !DRIsSymDefined( var ) ) {
is->sclass = SYM_MEMF; // memfunc decl
} else {
is->sclass = SYM_MEMVAR; // inlined defn treat like a var
}
break;
}
d->sr = SR_EXACT;
}
DCFree( name );
return( TRUE );
}
static bool AEnumMemLookup( dr_handle var, int index, void *_d )
/**************************************************************/
{
type_wlk_lookup *d = _d;
imp_sym_handle *is;
char *name;
unsigned len;
index = index;
name = DRGetName( var );
if( name == NULL ) {
DCStatus( DS_FAIL );
return( FALSE );
}
len = strlen( name );
if( len == d->li->name.len && d->comp( name, d->li->name.start, len ) == 0 ) {
is = DCSymCreate( d->com.ii, d->com.d );
SetSymHandle( (type_wlk *)d, is );
is->sym = var;
d->sr = SR_EXACT;
}
DCFree( name );
return( TRUE );
}
static search_result DoLookupSym( imp_image_handle *ii, symbol_source ss,
void *source, lookup_item *li, location_context *lc, void *d )
{
imp_mod_handle im;
search_result sr;
lookup_item sym_li;
char *buff;
const char *src;
char *dst;
size_t len;
unsigned op_len;
imp_sym_handle *scope_is;
lc = lc;
if( GETU8( li->name.start ) == SH_ESCAPE ) {
CollectSymHdl( li->name.start, DCSymCreate( ii, d ) );
return( SR_EXACT );
}
if( li->type == ST_NAMESPACE )
return( SR_NONE );
sym_li = *li;
if( ss == SS_SCOPESYM ) {
char *scope_name;
scope_is = source;
len = ImpInterface.SymName( ii, scope_is, NULL, SN_SOURCE, NULL, 0 );
scope_name = __alloca( len + 1 );
ImpInterface.SymName( ii, scope_is, NULL, SN_SOURCE, scope_name, len + 1 );
sym_li.scope.start = scope_name;
sym_li.scope.len = len;
ss = SS_MODULE;
sym_li.mod = IMH2MH( scope_is->im );
source = &sym_li.mod;
}
if( sym_li.type == ST_OPERATOR ) {
src = sym_li.name.start;
len = sym_li.name.len;
buff = __alloca( len + 20 );
dst = buff;
for( ;; ) {
if( len == 0 )
break;
if( src == sym_li.source.start ) {
op_len = __mangle_operator( src, sym_li.source.len, buff );
if( op_len == 0 ) {
DCStatus( DS_ERR|DS_INVALID_OPERATOR );
return( SR_NONE );
}
dst += op_len;
src += sym_li.source.len;
len -= sym_li.source.len;
} else {
*dst++ = *src++;
--len;
}
}
sym_li.name.len = dst - buff;
sym_li.name.start = buff;
}
sr = SR_NONE;
im = IMH_NOMOD;
switch( ss ) {
case SS_SCOPED:
if( ImpInterface.AddrMod( ii, *(address *)source, &im ) == SR_NONE ) {
im = MH2IMH( sym_li.mod );
} else if( MH2IMH( sym_li.mod ) == IMH_NOMOD || MH2IMH( sym_li.mod ) == im ) {
if( !sym_li.file_scope && sym_li.type == ST_NONE ) {
sr = SearchLclScope( ii, im, (address *)source, &sym_li, d );
}
} else {
im = MH2IMH( sym_li.mod );
}
if( im != IMH_NOMOD && sr == SR_NONE ) {
sr = SearchFileScope( ii, im, &sym_li, d );
}
break;
case SS_MODULE:
im = *(imp_mod_handle *)source;
if( MH2IMH( sym_li.mod ) == IMH_NOMOD || MH2IMH( sym_li.mod ) == im ) {
sr = SearchFileScope( ii, im, &sym_li, d );
}
break;
case SS_TYPE:
if( MH2IMH( sym_li.mod ) != IMH_NOMOD )
return( SR_NONE );
switch( sym_li.type ) {
case ST_TYPE:
case ST_STRUCT_TAG:
case ST_CLASS_TAG:
case ST_UNION_TAG:
case ST_ENUM_TAG:
return( SR_NONE );
}
return( SearchMbr( ii, (imp_type_handle *)source, &sym_li, d ) );
}
if( sr == SR_NONE ) {
switch( sym_li.type ) {
case ST_NONE:
case ST_DESTRUCTOR:
case ST_OPERATOR:
sr = SearchGbl( ii, im, MH2IMH( sym_li.mod ), &sym_li, d );
break;
}
}
return( sr );
}
search_result DoLookupSym( imp_image_handle *ii, symbol_source ss,
void *source, lookup_item *li, location_context *lc, void *d )
{
imp_mod_handle im;
search_result sr;
lookup_item item;
char *buff;
char *src;
char *dst;
unsigned len;
unsigned op_len;
imp_sym_handle *scope_is;
if( *li->name.start == SH_ESCAPE ) {
CollectSymHdl( (byte *)li->name.start, DCSymCreate( ii, d ) );
return( SR_EXACT );
}
if( li->type == ST_NAMESPACE ) return( SR_NONE );
item = *li;
if( ss == SS_SCOPESYM ) {
scope_is = source;
len = ImpInterface.sym_name( ii, scope_is, NULL, SN_SOURCE, NULL, 0 );
item.scope.start = __alloca( len + 1 );
ImpInterface.sym_name( ii, scope_is, NULL, SN_SOURCE, item.scope.start, len + 1 );
item.scope.len = len;
ss = SS_MODULE;
item.mod = scope_is->im;
source = &item.mod;
}
if( item.type == ST_OPERATOR ) {
src = item.name.start;
len = item.name.len;
buff = __alloca( len + 20 );
dst = buff;
for( ;; ) {
if( len == 0 ) break;
if( src == item.source.start ) {
op_len = __mangle_operator( src, item.source.len, buff );
if( op_len == 0 ) {
DCStatus( DS_ERR|DS_INVALID_OPERATOR );
return( SR_NONE );
}
dst += op_len;
src += item.source.len;
len -= item.source.len;
} else {
*dst++ = *src++;
--len;
}
}
item.name.len = dst - buff;
item.name.start = buff;
}
sr = SR_NONE;
switch( ss ) {
case SS_SCOPED:
if( ImpInterface.addr_mod( ii, *(address *)source, &im ) == SR_NONE ) {
im = item.mod;
} else if( item.mod == NO_MOD || item.mod == im ) {
if( !item.file_scope && item.type == ST_NONE ) {
sr = SearchLclScope( ii, im, (address *)source, &item, d );
}
} else {
im = item.mod;
}
if( im != NO_MOD && sr == SR_NONE ) {
sr = SearchFileScope( ii, im, &item, d );
}
break;
case SS_MODULE:
im = *(imp_mod_handle *)source;
if( item.mod == NO_MOD || item.mod == im ) {
sr = SearchFileScope( ii, im, &item, d );
}
break;
case SS_TYPE:
if( item.mod != NO_MOD ) return( SR_NONE );
switch( item.type ) {
case ST_TYPE:
case ST_STRUCT_TAG:
case ST_CLASS_TAG:
case ST_UNION_TAG:
case ST_ENUM_TAG:
return( SR_NONE );
}
return( SearchMbr( ii, (imp_type_handle *)source, &item, d ) );
}
if( sr == SR_NONE ) {
switch( item.type ) {
case ST_NONE:
case ST_DESTRUCTOR:
case ST_OPERATOR:
sr = SearchGbl( ii, im, (imp_mod_handle)item.mod, &item, d );
break;
}
}
return( sr );
}
/*
* SearchGbl -- look up a global symbol name
*/
static search_result LkupGblName( section_info *inf, imp_mod_handle cim,
imp_mod_handle im, lookup_item *li, void *d )
{
gbl_link *lnk;
gbl_link *lnk_array;
gbl_info *gbl;
hash_link lnk_off;
int (*compare)(void const*,void const*,size_t);
char *gblname;
size_t gbllen;
char *nam = NULL;
size_t namlen = 0;
char *snam;
size_t snamlen;
char *mangled;
size_t mangle_len;
unsigned entry;
info_block *blk;
int lkup_dtor;
int lkup_full = 0;
imp_sym_handle *is;
address addr;
search_result sr;
sr = SR_NONE;
compare = li->case_sensitive ? memcmp : memicmp;
lkup_dtor = (li->type == ST_DESTRUCTOR);
/* only want to hash the source code portion of the name */
switch( source_name( li->name.start, li->name.len, &snam, &snamlen ) ) {
case __NOT_MANGLED:
lkup_full = 0;
nam = snam;
namlen = snamlen;
break;
case __MANGLED_DTOR:
lkup_dtor = 1;
/* fall through */
case __MANGLED_CTOR:
case __MANGLED:
case __MANGLED_INTERNAL:
lkup_full = 1;
nam = li->name.start;
namlen = li->name.len;
break;
}
for( blk = inf->gbl; blk != NULL; blk = blk->next ) {
lnk_array = LINK( blk )->link;
lnk_off = LINK( blk )->hash[ GblNameHash( snam, snamlen ) ];
while( lnk_off != HL_END ) {
lnk = MAKE_LP( lnk_array, lnk_off );
gbl = lnk->gbl;
if( lnk->dtor != lkup_dtor ) goto next_global;
if( lkup_full ) {
if( GBL_NAMELEN( gbl ) != namlen ) goto next_global;
} else {
if( lnk->src_len != namlen ) goto next_global;
}
if( im == IMH_NOMOD ) {
if( GBL_KIND( gbl ) & GBL_KIND_STATIC &&
cim != GBL_MOD( gbl ) ) goto next_global;
} else {
if( im != GBL_MOD( gbl ) ) goto next_global;
}
mangled = GBL_NAME( gbl );
gblname = mangled;
if( !lkup_full ) gblname += lnk->src_off;
if( compare( gblname, nam, namlen ) != 0 ) goto next_global;
if( li->scope.start != NULL ) {
mangle_len = GBL_NAMELEN( gbl );
entry = 0;
for( ;; ) {
if( !__scope_name( mangled, mangle_len, entry,
(const char **)&gblname, &gbllen ) ) goto next_global;
if( li->scope.len == gbllen &&
compare( li->scope.start, gblname, gbllen ) == 0 ) {
break;
}
++entry;
}
}
is = DCSymCreate( inf->ctl, d );
is->im = GBL_MOD( gbl );
MK_ADDR( addr, gbl->addr, inf->sect_id );
/* need to see if there's a local symbol at the right
address and use that instead */
if( cim == is->im ) {
/* We've already checked the local symbols. It ain't there. */
GblCreate( is, gbl );
} else if( LookupLclAddr( inf->ctl, addr, is ) == SR_EXACT ) {
SetGblLink( is, gbl );
} else {
GblCreate( is, gbl );
}
sr = SR_EXACT;
next_global:
lnk_off = lnk->hash_off;
}
}
return( sr );
}
imp_sym_handle * DIGCLIENT XDIPCliSymCreate( imp_image_handle *ii, void *d )
{
return( DCSymCreate( ii, d ) );
}
