#include "lang_features.h"
#include "adt/error.h"
-static ident *id_underscore;
-static ident *id_imp;
-static symbol_t *sym_C;
-static symbol_t *sym_stdcall;
-static struct obstack obst;
+static struct obstack obst;
static void mangle_type(type_t *type);
static void mangle_function_type(const function_type_t *type)
{
obstack_1grow(&obst, 'F');
- if (type->linkage == sym_C) {
+ if (type->linkage == LINKAGE_C) {
obstack_1grow(&obst, 'Y');
}
mangle_type(type->return_type);
function_parameter_t *parameter = type->parameters;
- for ( ; parameter != NULL; parameter = parameter->next) {
- mangle_type(parameter->type);
- }
- if (type->variadic) {
- obstack_1grow(&obst, 'z');
+ if (parameter != NULL) {
+ for ( ; parameter != NULL; parameter = parameter->next) {
+ mangle_type(parameter->type);
+ }
+ if (type->variadic) {
+ obstack_1grow(&obst, 'z');
+ }
+ } else {
+ obstack_1grow(&obst, 'v');
}
if (type->unspecified_parameters)
panic("can't mangle unspecified parameter types");
static void mangle_qualifiers(type_qualifiers_t qualifiers)
{
- if (qualifiers & TYPE_QUALIFIER_CONST)
- obstack_1grow(&obst, 'K');
- if (qualifiers & TYPE_QUALIFIER_VOLATILE)
- obstack_1grow(&obst, 'V');
if (qualifiers & TYPE_QUALIFIER_RESTRICT)
obstack_1grow(&obst, 'r');
+ if (qualifiers & TYPE_QUALIFIER_VOLATILE)
+ obstack_1grow(&obst, 'V');
+ if (qualifiers & TYPE_QUALIFIER_CONST)
+ obstack_1grow(&obst, 'K');
/* handle MS extended qualifiers? */
}
panic("invalid type encountered while mangling");
}
+static void mangle_entity(entity_t *entity)
+{
+ obstack_1grow(&obst, '_');
+ obstack_1grow(&obst, 'Z');
+
+ /* TODO: mangle scope */
+
+ symbol_t *symbol = entity->base.symbol;
+ obstack_printf(&obst, "%u%s", strlen(symbol->string), symbol->string);
+
+ if (entity->kind == ENTITY_FUNCTION) {
+ mangle_type(entity->declaration.type);
+ }
+}
+
+static ident *make_id_from_obst(void)
+{
+ size_t size = obstack_object_size(&obst);
+ char *str = obstack_finish(&obst);
+ ident *id = new_id_from_chars(str, size);
+ obstack_free(&obst, str);
+ return id;
+}
/**
* Mangles an entity linker (ld) name for win32 usage.
*/
ident *create_name_win32(entity_t *entity)
{
- ident *id = new_id_from_str(entity->base.symbol->string);
-
- if (entity->kind == ENTITY_FUNCTION) {
- if (entity->declaration.type->function.linkage == sym_stdcall) {
- char buf[16];
- ir_type *irtype = get_ir_type(entity->declaration.type);
- size_t size = 0;
- for (int i = get_method_n_params(irtype) - 1; i >= 0; --i) {
- size += get_type_size_bytes(get_method_param_type(irtype, i));
- }
-
- snprintf(buf, sizeof(buf), "@%d", size);
- return id_mangle3("_", id, buf);
- }
- } else {
- /* always add an underscore in win32 */
- id = id_mangle(id_underscore, id);
- }
+ struct obstack *o = &obst;
assert(is_declaration(entity));
- decl_modifiers_t decl_modifiers = entity->declaration.modifiers;
- if (decl_modifiers & DM_DLLIMPORT) {
+
+ if (entity->declaration.modifiers & DM_DLLIMPORT) {
/* add prefix for imported symbols */
- id = id_mangle(id_imp, id);
+ obstack_printf(o, "__imp_");
}
- return id;
-}
-static void mangle_entity(entity_t *entity)
-{
- assert(obstack_object_size(&obst) == 0);
- obstack_1grow(&obst, '_');
- obstack_1grow(&obst, 'Z');
+ if (entity->kind == ENTITY_FUNCTION) {
+ cc_kind_t cc = entity->declaration.type->function.calling_convention;
+
+ /* calling convention prefix */
+ switch (cc) {
+ case CC_DEFAULT:
+ case CC_CDECL:
+ case CC_STDCALL: obstack_1grow(o, '_'); break;
+ case CC_FASTCALL: obstack_1grow(o, '@'); break;
+ default: panic("unhandled calling convention");
+ }
- /* TODO: mangle scope */
+ switch (entity->declaration.type->function.linkage) {
+ case LINKAGE_INVALID:
+ break;
- symbol_t *symbol = entity->base.symbol;
- obstack_printf(&obst, "%u%s", strlen(symbol->string), symbol->string);
+ case LINKAGE_C:
+ obstack_printf(o, "%s", entity->base.symbol->string);
+ break;
- if (entity->kind == ENTITY_FUNCTION) {
- mangle_type(entity->declaration.type);
+ case LINKAGE_CXX:
+ mangle_entity(entity);
+ break;
+ }
+
+ /* calling convention suffix */
+ switch (cc) {
+ case CC_DEFAULT:
+ case CC_CDECL:
+ break;
+
+ case CC_STDCALL:
+ case CC_FASTCALL: {
+ ir_type *irtype = get_ir_type(entity->declaration.type);
+ size_t size = 0;
+ for (int i = get_method_n_params(irtype) - 1; i >= 0; --i) {
+ size += get_type_size_bytes(get_method_param_type(irtype, i));
+ }
+ obstack_printf(o, "@%zu\n", size);
+ break;
+ }
+
+ default:
+ panic("unhandled calling convention");
+ }
+ } else {
+ obstack_printf(o, "_%s", entity->base.symbol->string);
}
+
+ return make_id_from_obst();
}
/**
{
bool needs_mangling = false;
- if (entity->kind == ENTITY_FUNCTION && (c_mode & _CXX)) {
- symbol_t *linkage = entity->declaration.type->function.linkage;
-
- if (linkage == NULL) {
- needs_mangling = true;
- } else if (linkage != sym_C) {
- errorf(&entity->base.source_position,
- "Unknown linkage type \"%Y\" found\n", linkage);
+ if (entity->kind == ENTITY_FUNCTION) {
+ switch (entity->declaration.type->function.linkage) {
+ case LINKAGE_INVALID: break;
+ case LINKAGE_C: break;
+ case LINKAGE_CXX: needs_mangling = true; break;
}
}
if (needs_mangling) {
mangle_entity(entity);
- obstack_1grow(&obst, '\0');
- char *str = obstack_finish(&obst);
-
- ident *id = new_id_from_str(str);
- obstack_free(&obst, str);
-
- return id;
+ return make_id_from_obst();
}
return new_id_from_str(entity->base.symbol->string);
*/
ident *create_name_macho(entity_t *entity)
{
- ident *id = new_id_from_str(entity->base.symbol->string);
- return id_mangle(id_underscore, id);
+ obstack_printf(&obst, "_%s", entity->base.symbol->string);
+ return make_id_from_obst();
}
void init_mangle(void)
{
- id_underscore = new_id_from_chars("_", 1);
- id_imp = new_id_from_chars("__imp_", 6);
- sym_C = symbol_table_insert("C");
- sym_stdcall = symbol_table_insert("stdcall");
-
obstack_init(&obst);
}
projects / cparser / blobdiff