#define _GNU_SOURCE
#include <assert.h>
+#include <string.h>
+#include <stdbool.h>
+
#include <libfirm/firm.h>
#include <libfirm/adt/obst.h>
+#include "ast2firm.h"
+
#include "adt/error.h"
#include "token_t.h"
#include "type_t.h"
static type_t *type_void;
static type_t *type_int;
+static int next_value_number_function;
+
+typedef enum declaration_type_t {
+ DECLARATION_TYPE_UNKNOWN,
+ DECLARATION_TYPE_FUNCTION,
+ DECLARATION_TYPE_GLOBAL_VARIABLE,
+ DECLARATION_TYPE_LOCAL_VARIABLE,
+ DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
+ DECLARATION_TYPE_COMPOUND_MEMBER
+} declaration_type_t;
+
typedef struct type2firm_env_t type2firm_env_t;
struct type2firm_env_t {
int can_cache; /* nonzero if type can safely be cached because
type_void = make_atomic_type(ATOMIC_TYPE_VOID, 0);
type_int = make_atomic_type(ATOMIC_TYPE_INT, 0);
+ ir_type_int = get_ir_type(type_int);
ir_type_const_char = get_ir_type(type_const_char);
- ir_type_void = get_ir_type(type_void);
+ ir_type_void = get_ir_type(type_int); /* we don't have a real void
+ type in firm */
ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
ir_type_void, mode_P_data);
- ir_type_int = get_ir_type(type_int);
+
+ type_void->firm_type = ir_type_void;
}
void exit_ast2firm(void)
return new_id_from_str(buf);
}
-#if 0
-static symbol_t *unique_symbol(const char *tag)
-{
- obstack_printf(&symbol_obstack, "%s.%d", tag, unique_id);
- unique_id++;
-
- const char *string = obstack_finish(&symbol_obstack);
- symbol_t *symbol = symbol_table_insert(string);
-
- assert(symbol->string == string);
-
- return symbol;
-}
-#endif
-
static type_t *skip_typeref(type_t *type)
{
while(1) {
case TYPE_COMPOUND_UNION:
case TYPE_COMPOUND_STRUCT:
return get_compound_type_size((compound_type_t*) type);
- case TYPE_METHOD:
- /* just a pointer to the method */
+ case TYPE_FUNCTION:
+ /* just a pointer to the function */
return get_mode_size_bytes(mode_P_code);
case TYPE_POINTER:
return get_mode_size_bytes(mode_P_data);
panic("Trying to determine size of invalid type");
}
-static unsigned count_parameters(const method_type_t *method_type)
+static unsigned count_parameters(const function_type_t *function_type)
{
unsigned count = 0;
- method_parameter_t *parameter = method_type->parameters;
+ function_parameter_t *parameter = function_type->parameters;
for ( ; parameter != NULL; parameter = parameter->next) {
++count;
}
-static ir_type *get_atomic_type(type2firm_env_t *env, const atomic_type_t *type)
+static ir_type *create_atomic_type(type2firm_env_t *env,
+ const atomic_type_t *type)
{
(void) env;
ir_mode *mode = get_atomic_mode(type);
return irtype;
}
-static ir_type *get_method_type(type2firm_env_t *env,
- const method_type_t *method_type)
+static ir_type *create_method_type(type2firm_env_t *env,
+ const function_type_t *function_type)
{
- type_t *result_type = method_type->result_type;
+ type_t *result_type = function_type->result_type;
- ident *id = unique_ident("methodtype");
- int n_parameters = count_parameters(method_type);
+ ident *id = unique_ident("functiontype");
+ int n_parameters = count_parameters(function_type);
int n_results = result_type == type_void ? 0 : 1;
ir_type *irtype = new_type_method(id, n_parameters, n_results);
set_method_res_type(irtype, 0, restype);
}
- method_parameter_t *parameter = method_type->parameters;
- int n = 0;
+ function_parameter_t *parameter = function_type->parameters;
+ int n = 0;
for( ; parameter != NULL; parameter = parameter->next) {
ir_type *p_irtype = _get_ir_type(env, parameter->type);
set_method_param_type(irtype, n, p_irtype);
++n;
}
- if(method_type->variadic) {
+ if(function_type->variadic) {
set_method_variadicity(irtype, variadicity_variadic);
}
return irtype;
}
-static ir_type *get_pointer_type(type2firm_env_t *env, pointer_type_t *type)
+static ir_type *create_pointer_type(type2firm_env_t *env, pointer_type_t *type)
{
type_t *points_to = type->points_to;
ir_type *ir_points_to;
* again (might be a struct). We therefore first create a void* pointer
* and then set the real points_to type
*/
- ir_type *ir_type_void = get_ir_type(type_void);
- ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
- ir_type_void, mode_P_data);
+ ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
+ ir_type_void, mode_P_data);
type->type.firm_type = ir_type;
ir_points_to = _get_ir_type(env, points_to);
return ir_type;
}
-static ir_type *get_array_type(type2firm_env_t *env, array_type_t *type)
+static ir_type *create_array_type(type2firm_env_t *env, array_type_t *type)
{
type_t *element_type = type->element_type;
ir_type *ir_element_type = _get_ir_type(env, element_type);
#define INVALID_TYPE ((ir_type_ptr)-1)
-static ir_type *get_struct_type(type2firm_env_t *env, compound_type_t *type)
+static ir_type *create_struct_type(type2firm_env_t *env, compound_type_t *type)
{
symbol_t *symbol = type->declaration->symbol;
ident *id;
ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
set_entity_offset(entity, offset);
add_struct_member(ir_type, entity);
- entry->entity = entity;
+ entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
+ entry->v.entity = entity;
offset += entry_size;
if(entry_alignment > align_all) {
return ir_type;
}
-static ir_type *get_union_type(type2firm_env_t *env, compound_type_t *type)
+static ir_type *create_union_type(type2firm_env_t *env, compound_type_t *type)
{
declaration_t *declaration = type->declaration;
symbol_t *symbol = declaration->symbol;
ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
add_union_member(ir_type, entity);
set_entity_offset(entity, 0);
- entry->entity = entity;
+ entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
+ entry->v.entity = entity;
if(entry_size > size) {
size = entry_size;
ir_type *firm_type = NULL;
switch(type->type) {
case TYPE_ATOMIC:
- firm_type = get_atomic_type(env, (atomic_type_t*) type);
+ firm_type = create_atomic_type(env, (atomic_type_t*) type);
break;
- case TYPE_METHOD:
- firm_type = get_method_type(env, (method_type_t*) type);
+ case TYPE_FUNCTION:
+ firm_type = create_method_type(env, (function_type_t*) type);
break;
case TYPE_POINTER:
- firm_type = get_pointer_type(env, (pointer_type_t*) type);
+ firm_type = create_pointer_type(env, (pointer_type_t*) type);
break;
case TYPE_ARRAY:
- firm_type = get_array_type(env, (array_type_t*) type);
+ firm_type = create_array_type(env, (array_type_t*) type);
break;
case TYPE_COMPOUND_STRUCT:
- firm_type = get_struct_type(env, (compound_type_t*) type);
+ firm_type = create_struct_type(env, (compound_type_t*) type);
break;
case TYPE_COMPOUND_UNION:
- firm_type = get_union_type(env, (compound_type_t*) type);
+ firm_type = create_union_type(env, (compound_type_t*) type);
break;
case TYPE_ENUM:
firm_type = ir_type_int;
return mode;
}
-int dummy(void)
+static ir_entity* get_function_entity(declaration_t *declaration)
+{
+ if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
+ return declaration->v.entity;
+ assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+
+ symbol_t *symbol = declaration->symbol;
+ ident *id = new_id_from_str(symbol->string);
+
+ ir_type *global_type = get_glob_type();
+ ir_type *ir_type_method = get_ir_type(declaration->type);
+ assert(is_Method_type(ir_type_method));
+
+ type_t *type = declaration->type;
+ ir_entity *entity = new_entity(global_type, id, ir_type_method);
+ set_entity_ld_ident(entity, id);
+ if(declaration->storage_class & STORAGE_CLASS_STATIC
+ || type->qualifiers & TYPE_QUALIFIER_INLINE) {
+ set_entity_visibility(entity, visibility_local);
+ } else if(declaration->init.statement != NULL) {
+ set_entity_visibility(entity, visibility_external_visible);
+ } else {
+ set_entity_visibility(entity, visibility_external_allocated);
+ }
+
+ declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
+ declaration->v.entity = entity;
+
+ return entity;
+}
+
+
+
+static ir_node *expression_to_firm(const expression_t *expression);
+
+static dbg_info *get_dbg_info(const source_position_t *pos)
+{
+ return (dbg_info*) pos;
+}
+
+static ir_node *const_to_firm(const const_t *cnst)
+{
+ dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
+ ir_mode *mode = get_ir_mode(cnst->expression.datatype);
+
+ tarval *tv;
+ if(mode_is_float(mode)) {
+ tv = new_tarval_from_double(cnst->v.float_value, mode);
+ } else {
+ tv = new_tarval_from_long(cnst->v.int_value, mode);
+ }
+
+ return new_d_Const(dbgi, mode, tv);
+}
+
+static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
+{
+ assert(entity != NULL);
+ union symconst_symbol sym;
+ sym.entity_p = entity;
+ return new_d_SymConst(dbgi, sym, symconst_addr_ent);
+}
+
+static ir_node *string_literal_to_firm(const string_literal_t* literal)
+{
+ ir_type *global_type = get_glob_type();
+ ir_type *type = new_type_array(unique_ident("strtype"), 1,
+ ir_type_const_char);
+
+ ident *id = unique_ident("Lstr");
+ ir_entity *entity = new_entity(global_type, id, type);
+ set_entity_ld_ident(entity, id);
+ set_entity_variability(entity, variability_constant);
+
+ ir_type *elem_type = ir_type_const_char;
+ ir_mode *mode = get_type_mode(elem_type);
+
+ const char *string = literal->value;
+ size_t slen = strlen(string) + 1;
+
+ set_array_lower_bound_int(type, 0, 0);
+ set_array_upper_bound_int(type, 0, slen);
+ set_type_size_bytes(type, slen);
+ set_type_state(type, layout_fixed);
+
+ tarval **tvs = xmalloc(slen * sizeof(tvs[0]));
+ for(size_t i = 0; i < slen; ++i) {
+ tvs[i] = new_tarval_from_long(string[i], mode);
+ }
+
+ set_array_entity_values(entity, tvs, slen);
+ free(tvs);
+
+ dbg_info *dbgi = get_dbg_info(&literal->expression.source_position);
+
+ return create_symconst(dbgi, entity);
+}
+
+static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
+{
+ dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
+ declaration_t *declaration = ref->declaration;
+ type_t *type = declaration->type;
+ ir_mode *mode = get_ir_mode(type);
+
+ switch((declaration_type_t) declaration->declaration_type) {
+ case DECLARATION_TYPE_UNKNOWN:
+ break;
+ case DECLARATION_TYPE_LOCAL_VARIABLE:
+ return get_value(declaration->v.value_number, mode);
+ case DECLARATION_TYPE_FUNCTION: {
+ return create_symconst(dbgi, declaration->v.entity);
+ }
+ case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY:
+ case DECLARATION_TYPE_GLOBAL_VARIABLE:
+ case DECLARATION_TYPE_COMPOUND_MEMBER:
+ panic("not implemented reference type");
+ }
+
+ panic("reference to declaration with unknown type found");
+}
+
+static ir_node *call_expression_to_firm(const call_expression_t *call)
+{
+ expression_t *function = call->function;
+ ir_node *callee = expression_to_firm(function);
+
+ assert(function->datatype->type == TYPE_FUNCTION);
+ function_type_t *function_type = (function_type_t*) function->datatype;
+
+ int n_parameters = 0;
+ call_argument_t *argument = call->arguments;
+ for( ; argument != NULL; argument = argument->next) {
+ ++n_parameters;
+ }
+
+ ir_type *ir_method_type = get_ir_type((type_t*) function_type);
+ ir_type *new_method_type = NULL;
+ if(function_type->variadic) {
+ /* we need to construct a new method type matching the call
+ * arguments... */
+ int n_res = get_method_n_ress(ir_method_type);
+ new_method_type = new_type_method(unique_ident("calltype"),
+ n_parameters, n_res);
+ set_method_calling_convention(new_method_type,
+ get_method_calling_convention(ir_method_type));
+ set_method_additional_properties(new_method_type,
+ get_method_additional_properties(ir_method_type));
+
+ for(int i = 0; i < n_res; ++i) {
+ set_method_res_type(new_method_type, i,
+ get_method_res_type(ir_method_type, i));
+ }
+ }
+ ir_node *in[n_parameters];
+
+ argument = call->arguments;
+ int n = 0;
+ for( ; argument != NULL; argument = argument->next) {
+ expression_t *expression = argument->expression;
+ ir_node *arg_node = expression_to_firm(expression);
+
+ in[n] = arg_node;
+ if(new_method_type != NULL) {
+ ir_type *irtype = get_ir_type(expression->datatype);
+ set_method_param_type(new_method_type, n, irtype);
+ }
+
+ n++;
+ }
+ assert(n == n_parameters);
+
+ if(new_method_type != NULL)
+ ir_method_type = new_method_type;
+
+ dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
+ ir_node *store = get_store();
+ ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
+ ir_method_type);
+ ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
+ set_store(mem);
+
+ type_t *result_type = function_type->result_type;
+ ir_node *result = NULL;
+ if(result_type != type_void) {
+ ir_mode *mode = get_ir_mode(result_type);
+ ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
+ result = new_d_Proj(dbgi, resproj, mode, 0);
+ }
+
+ return result;
+}
+
+static ir_node *load_from_expression_addr(type_t *type, ir_node *addr,
+ dbg_info *dbgi)
+{
+ ir_mode *mode = get_ir_mode(type);
+ ir_node *memory = get_store();
+ ir_node *load = new_d_Load(dbgi, memory, addr, mode);
+ ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
+ ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+ set_store(load_mem);
+
+ return load_res;
+}
+
+static ir_node *expression_addr(const expression_t *expression)
+{
+ (void) expression;
+ panic("expression_addr not implemented yet");
+ return NULL;
+}
+
+static void set_value_for_expression(const expression_t *expression,
+ ir_node *value)
+{
+ if(expression->type == EXPR_REFERENCE) {
+ reference_expression_t *ref = (reference_expression_t*) expression;
+
+ declaration_t *declaration = ref->declaration;
+ assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
+ if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
+ set_value(declaration->v.value_number, value);
+ return;
+ }
+ }
+ panic("set_value_for_expression not implemented yet");
+}
+
+static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
+{
+ ir_mode *value_mode = get_irn_mode(value);
+
+ if(value_mode == dest_mode)
+ return value;
+
+ if(dest_mode == mode_b) {
+ ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
+ ir_node *cmp = new_d_Cmp(dbgi, value, zero);
+ ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
+ return proj;
+ }
+
+ return new_d_Conv(dbgi, value, dest_mode);
+}
+
+static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
+ type_t *type = expression->expression.datatype;
+ ir_mode *mode = get_ir_mode(type);
+
+ if(expression->type == UNEXPR_TAKE_ADDRESS)
+ return expression_addr(expression->value);
+
+ const expression_t *value = expression->value;
+ ir_node *value_node = expression_to_firm(value);
+
+ switch(expression->type) {
+ case UNEXPR_NEGATE:
+ return new_d_Minus(dbgi, value_node, mode);
+ case UNEXPR_PLUS:
+ return value_node;
+ case UNEXPR_BITWISE_NEGATE:
+ return new_d_Not(dbgi, value_node, mode);
+ case UNEXPR_NOT:
+ if(get_irn_mode(value_node) != mode_b) {
+ value_node = create_conv(dbgi, value_node, mode_b);
+ }
+ value_node = new_d_Not(dbgi, value_node, mode_b);
+ if(mode != mode_b) {
+ value_node = create_conv(dbgi, value_node, mode);
+ }
+ return value_node;
+ case UNEXPR_DEREFERENCE:
+ return load_from_expression_addr(type, value_node, dbgi);
+ case UNEXPR_POSTFIX_INCREMENT: {
+ ir_node *one = new_Const(mode, get_mode_one(mode));
+ ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
+ set_value_for_expression(value, new_value);
+ return value_node;
+ }
+ case UNEXPR_POSTFIX_DECREMENT: {
+ ir_node *one = new_Const(mode, get_mode_one(mode));
+ ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
+ set_value_for_expression(value, new_value);
+ return value_node;
+ }
+ case UNEXPR_PREFIX_INCREMENT: {
+ ir_node *one = new_Const(mode, get_mode_one(mode));
+ ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
+ set_value_for_expression(value, new_value);
+ return new_value;
+ }
+ case UNEXPR_PREFIX_DECREMENT: {
+ ir_node *one = new_Const(mode, get_mode_one(mode));
+ ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
+ set_value_for_expression(value, new_value);
+ return new_value;
+ }
+ case UNEXPR_CAST:
+ return create_conv(dbgi, value_node, mode);
+
+ case UNEXPR_TAKE_ADDRESS:
+ case UNEXPR_INVALID:
+ break;
+ }
+ panic("invalid UNEXPR type found");
+}
+
+static long get_pnc(binary_expression_type_t type)
+{
+ switch(type) {
+ case BINEXPR_EQUAL: return pn_Cmp_Eq;
+ case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
+ case BINEXPR_LESS: return pn_Cmp_Lt;
+ case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
+ case BINEXPR_GREATER: return pn_Cmp_Gt;
+ case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
+ default:
+ break;
+ }
+ panic("trying to get pn_Cmp from non-comparison binexpr type");
+}
+
+static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
+
+ binary_expression_type_t type = expression->type;
+ switch(type) {
+ case BINEXPR_EQUAL:
+ case BINEXPR_NOTEQUAL:
+ case BINEXPR_LESS:
+ case BINEXPR_LESSEQUAL:
+ case BINEXPR_GREATER:
+ case BINEXPR_GREATEREQUAL: {
+ ir_node *left = expression_to_firm(expression->left);
+ ir_node *right = expression_to_firm(expression->right);
+ ir_node *cmp = new_d_Cmp(dbgi, left, right);
+ long pnc = get_pnc(type);
+ ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
+ return proj;
+ }
+ case BINEXPR_ASSIGN: {
+ ir_node *right = expression_to_firm(expression->right);
+ set_value_for_expression(expression->left, right);
+ return right;
+ }
+ default:
+ panic("TODO binexpr type");
+ }
+}
+
+static ir_node *expression_to_firm(const expression_t *expression)
{
- return get_type_size(type_int);
+ switch(expression->type) {
+ case EXPR_CONST:
+ return const_to_firm((const const_t*) expression);
+ case EXPR_STRING_LITERAL:
+ return string_literal_to_firm((const string_literal_t*) expression);
+ case EXPR_REFERENCE:
+ return reference_expression_to_firm(
+ (const reference_expression_t*) expression);
+ case EXPR_CALL:
+ return call_expression_to_firm((const call_expression_t*) expression);
+ case EXPR_UNARY:
+ return unary_expression_to_firm((const unary_expression_t*) expression);
+ case EXPR_BINARY:
+ return binary_expression_to_firm(
+ (const binary_expression_t*) expression);
+ default:
+ break;
+ }
+ panic("unsupported expression found");
+}
+
+
+
+static void statement_to_firm(statement_t *statement);
+
+static void return_statement_to_firm(return_statement_t *statement)
+{
+ dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
+ ir_node *ret;
+
+ if(statement->return_value != NULL) {
+ ir_node *retval = expression_to_firm(statement->return_value);
+ ir_node *in[1];
+
+ in[0] = retval;
+ ret = new_d_Return(dbgi, get_store(), 1, in);
+ } else {
+ ret = new_d_Return(dbgi, get_store(), 0, NULL);
+ }
+ ir_node *end_block = get_irg_end_block(current_ir_graph);
+ add_immBlock_pred(end_block, ret);
+
+ set_cur_block(NULL);
+}
+
+static void compound_statement_to_firm(compound_statement_t *compound)
+{
+ statement_t *statement = compound->statements;
+ for( ; statement != NULL; statement = statement->next) {
+ //context2firm(&statement->context);
+ statement_to_firm(statement);
+ }
+}
+
+static void expression_statement_to_firm(expression_statement_t *statement)
+{
+ expression_to_firm(statement->expression);
+}
+
+static void if_statement_to_firm(if_statement_t *statement)
+{
+ dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
+ ir_node *condition = expression_to_firm(statement->condition);
+ assert(condition != NULL);
+
+ /* make sure we have a mode_b condition */
+ condition = create_conv(dbgi, condition, mode_b);
+
+ ir_node *cond = new_d_Cond(dbgi, condition);
+ ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
+ ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
+
+ ir_node *fallthrough_block = new_immBlock();
+
+ /* the true (blocks) */
+ ir_node *true_block = new_immBlock();
+ add_immBlock_pred(true_block, true_proj);
+ mature_immBlock(true_block);
+
+ statement_to_firm(statement->true_statement);
+ if(get_cur_block() != NULL) {
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(fallthrough_block, jmp);
+ }
+
+ /* the false (blocks) */
+ if(statement->false_statement != NULL) {
+ ir_node *false_block = new_immBlock();
+ add_immBlock_pred(false_block, false_proj);
+ mature_immBlock(false_block);
+
+ statement_to_firm(statement->false_statement);
+ if(get_cur_block() != NULL) {
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(fallthrough_block, jmp);
+ }
+ } else {
+ add_immBlock_pred(fallthrough_block, false_proj);
+ }
+ mature_immBlock(fallthrough_block);
+
+ set_cur_block(fallthrough_block);
+}
+
+static void while_statement_to_firm(while_statement_t *statement)
+{
+ dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
+
+ /* create the header block */
+ ir_node *jmp = new_Jmp();
+ ir_node *header_block = new_immBlock();
+ add_immBlock_pred(header, jmp);
+
+ /* create the condition */
+ ir_node *condition = expression_to_firm(statement->condition);
+ assert(condition != NULL);
+ /* make sure we have a mode_b condition */
+ condition = create_conv(dbgi, condition, mode_b);
+
+ ir_node *cond = new_d_Cond(dbgi, condition);
+ ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
+ ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
+
+ /* the loop body */
+ ir_node *body_block = new_immBlock();
+ add_immBlock_pred(body_block, true_proj);
+ mature_immBlock(true_block);
+
+ statement_to_firm(statement->true_statement);
+ if(get_cur_block() != NULL) {
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(fallthrough_block, jmp);
+ }
+
+ /* the false (blocks) */
+ if(statement->false_statement != NULL) {
+ ir_node *false_block = new_immBlock();
+ add_immBlock_pred(false_block, false_proj);
+ mature_immBlock(false_block);
+
+ statement_to_firm(statement->false_statement);
+ if(get_cur_block() != NULL) {
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(fallthrough_block, jmp);
+ }
+ } else {
+ add_immBlock_pred(fallthrough_block, false_proj);
+ }
+ mature_immBlock(fallthrough_block);
+
+ set_cur_block(fallthrough_block);
+}
+
+static void create_declaration_entity(declaration_t *declaration,
+ declaration_type_t declaration_type,
+ ir_type *parent_type)
+{
+ ident *id = new_id_from_str(declaration->symbol->string);
+ ir_type *irtype = get_ir_type(declaration->type);
+ ir_entity *entity = new_entity(parent_type, id, irtype);
+ set_entity_ld_ident(entity, id);
+
+ declaration->declaration_type = declaration_type;
+ declaration->v.entity = entity;
+ set_entity_variability(entity, variability_uninitialized);
+ /* TODO: visibility? */
+}
+
+static void create_initializer(declaration_t *declaration)
+{
+ initializer_t *initializer = declaration->init.initializer;
+ if(initializer == NULL)
+ return;
+
+ if(initializer->type == INITIALIZER_VALUE) {
+ assert(initializer->designator == NULL);
+ assert(initializer->next == NULL);
+ ir_node *init_node = expression_to_firm(initializer->v.value);
+
+ if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
+ set_value(declaration->v.value_number, init_node);
+ } else {
+ panic("initializer not completely implemented yet");
+ }
+ } else {
+ assert(initializer->type == INITIALIZER_LIST);
+ panic("list initializer not supported yet");
+ }
+}
+
+static void create_local_variable(declaration_t *declaration)
+{
+ bool needs_entity = declaration->address_taken;
+
+ assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+
+ if(needs_entity) {
+ ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+ create_declaration_entity(declaration,
+ DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
+ frame_type);
+ } else {
+ declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
+ declaration->v.value_number = next_value_number_function;
+ ++next_value_number_function;
+ }
+
+ create_initializer(declaration);
+}
+
+static void declaration_statement_to_firm(declaration_statement_t *statement)
+{
+ declaration_t *declaration = statement->declarations_begin;
+ declaration_t *end = statement->declarations_end->next;
+ for( ; declaration != end; declaration = declaration->next) {
+ type_t *type = declaration->type;
+
+ switch(declaration->storage_class) {
+ case STORAGE_CLASS_TYPEDEF:
+ continue;
+ case STORAGE_CLASS_STATIC:
+ panic("static local vars not implemented yet");
+ case STORAGE_CLASS_ENUM_ENTRY:
+ panic("enum entry declaration in local block found");
+ case STORAGE_CLASS_EXTERN:
+ panic("extern declaration in local block found");
+ case STORAGE_CLASS_NONE:
+ case STORAGE_CLASS_AUTO:
+ case STORAGE_CLASS_REGISTER:
+ if(type->type == TYPE_FUNCTION) {
+ panic("nested functions not supported yet");
+ } else {
+ create_local_variable(declaration);
+ }
+ continue;
+ }
+ panic("invalid storage class found");
+ }
+}
+
+static void statement_to_firm(statement_t *statement)
+{
+ switch(statement->type) {
+ case STATEMENT_COMPOUND:
+ compound_statement_to_firm((compound_statement_t*) statement);
+ return;
+ case STATEMENT_RETURN:
+ return_statement_to_firm((return_statement_t*) statement);
+ return;
+ case STATEMENT_EXPRESSION:
+ expression_statement_to_firm((expression_statement_t*) statement);
+ return;
+ case STATEMENT_IF:
+ if_statement_to_firm((if_statement_t*) statement);
+ return;
+ case STATEMENT_DECLARATION:
+ declaration_statement_to_firm((declaration_statement_t*) statement);
+ return;
+ default:
+ break;
+ }
+ panic("Statement not implemented\n");
+}
+
+static int get_function_n_local_vars(declaration_t *declaration)
+{
+ (void) declaration;
+ /* TODO */
+ return 30;
+}
+
+static void initialize_function_parameters(declaration_t *declaration)
+{
+ ir_graph *irg = current_ir_graph;
+ ir_node *args = get_irg_args(irg);
+ ir_node *start_block = get_irg_start_block(irg);
+
+ int n = 0;
+ declaration_t *parameter = declaration->context.declarations;
+ for( ; parameter != NULL; parameter = parameter->next) {
+ assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
+
+ if(parameter->address_taken) {
+ panic("address take from parameter not implemented yet");
+ }
+
+ ir_mode *mode = get_ir_mode(parameter->type);
+ long pn = n;
+ ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
+ ++n;
+
+ parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
+ parameter->v.value_number = next_value_number_function;
+ ++next_value_number_function;
+
+ set_value(parameter->v.value_number, proj);
+ }
+}
+
+static void create_function(declaration_t *declaration)
+{
+ ir_entity *entity = get_function_entity(declaration);
+
+ if(declaration->init.statement == NULL)
+ return;
+
+ int n_local_vars = get_function_n_local_vars(declaration);
+ ir_graph *irg = new_ir_graph(entity, n_local_vars);
+ ir_node *first_block = get_cur_block();
+
+ next_value_number_function = 0;
+ initialize_function_parameters(declaration);
+
+ statement_to_firm(declaration->init.statement);
+
+ ir_node *end_block = get_irg_end_block(irg);
+
+ /* do we have a return statement yet? */
+ if(get_cur_block() != NULL) {
+ ir_node *ret = new_Return(get_store(), 0, NULL);
+ add_immBlock_pred(end_block, ret);
+ }
+
+ mature_immBlock(first_block);
+ mature_immBlock(end_block);
+
+ irg_finalize_cons(irg);
+
+ /* finalize the frame type */
+ ir_type *frame_type = get_irg_frame_type(irg);
+ int n = get_compound_n_members(frame_type);
+ int align_all = 4;
+ int offset = 0;
+ for(int i = 0; i < n; ++i) {
+ ir_entity *entity = get_compound_member(frame_type, i);
+ ir_type *entity_type = get_entity_type(entity);
+
+ int align = get_type_alignment_bytes(entity_type);
+ if(align > align_all)
+ align_all = align;
+ int misalign = 0;
+ if(align > 0) {
+ misalign = offset % align;
+ offset += misalign;
+ }
+
+ set_entity_offset(entity, offset);
+ offset += get_type_size_bytes(entity_type);
+ }
+ set_type_size_bytes(frame_type, offset);
+ set_type_alignment_bytes(frame_type, align_all);
+ set_type_state(frame_type, layout_fixed);
+
+ irg_vrfy(irg);
+}
+
+static void context_to_firm(context_t *context)
+{
+ declaration_t *declaration = context->declarations;
+ for( ; declaration != NULL; declaration = declaration->next) {
+ type_t *type = declaration->type;
+ if(type->type == TYPE_FUNCTION) {
+ create_function(declaration);
+ } else {
+ /* TODO... */
+ }
+ }
+}
+
+void translation_unit_to_firm(translation_unit_t *unit)
+{
+ /* remove me later TODO FIXME */
+ (void) get_type_size;
+
+ context_to_firm(& unit->context);
}
projects / cparser / blobdiff