/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include "lang_features.h"
#include "warning.h"
#include "diagnostic.h"
+#include "printer.h"
#include "driver/firm_cmdline.h"
/** The default calling convention. */
cc_kind_t default_calling_convention = CC_CDECL;
static struct obstack _type_obst;
-static FILE *out;
struct obstack *type_obst = &_type_obst;
static bool print_implicit_array_size = false;
unsigned flags; /**< type flags from atomic_type_flag_t */
};
+/**
+ * Returns the size of a type node.
+ *
+ * @param kind the type kind
+ */
+static size_t get_type_struct_size(type_kind_t kind)
+{
+ static const size_t sizes[] = {
+ [TYPE_ATOMIC] = sizeof(atomic_type_t),
+ [TYPE_COMPLEX] = sizeof(complex_type_t),
+ [TYPE_IMAGINARY] = sizeof(imaginary_type_t),
+ [TYPE_BITFIELD] = sizeof(bitfield_type_t),
+ [TYPE_COMPOUND_STRUCT] = sizeof(compound_type_t),
+ [TYPE_COMPOUND_UNION] = sizeof(compound_type_t),
+ [TYPE_ENUM] = sizeof(enum_type_t),
+ [TYPE_FUNCTION] = sizeof(function_type_t),
+ [TYPE_POINTER] = sizeof(pointer_type_t),
+ [TYPE_ARRAY] = sizeof(array_type_t),
+ [TYPE_BUILTIN] = sizeof(builtin_type_t),
+ [TYPE_TYPEDEF] = sizeof(typedef_type_t),
+ [TYPE_TYPEOF] = sizeof(typeof_type_t),
+ };
+ assert(lengthof(sizes) == (int)TYPE_TYPEOF + 1);
+ assert(kind <= TYPE_TYPEOF);
+ assert(sizes[kind] != 0);
+ return sizes[kind];
+}
+
+type_t *allocate_type_zero(type_kind_t kind)
+{
+ size_t size = get_type_struct_size(kind);
+ type_t *res = obstack_alloc(type_obst, size);
+ memset(res, 0, size);
+ res->base.kind = kind;
+
+ return res;
+}
+
/**
* Properties of atomic types.
*/
}
unsigned int_size = machine_size < 32 ? 2 : 4;
- unsigned long_size = machine_size < 64 ? 4 : 8;
+ /* long is always 32bit on windows */
+ unsigned long_size = c_mode & _MS ? 4 : (machine_size < 64 ? 4 : 8);
unsigned llong_size = machine_size < 32 ? 4 : 8;
props[ATOMIC_TYPE_INT].size = int_size;
/* TODO: backend specific, need a way to query the backend for this.
* The following are good settings for x86 */
- props[ATOMIC_TYPE_FLOAT].alignment = 4;
- props[ATOMIC_TYPE_DOUBLE].alignment = 4;
- props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 4;
- props[ATOMIC_TYPE_LONGLONG].alignment = 4;
- props[ATOMIC_TYPE_ULONGLONG].alignment = 4;
- if (firm_opt.os_support == OS_SUPPORT_MACHO) {
- props[ATOMIC_TYPE_LONG_DOUBLE].size = 16;
- props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 16;
+ if (machine_size <= 32) {
+ props[ATOMIC_TYPE_FLOAT].alignment = 4;
+ props[ATOMIC_TYPE_DOUBLE].alignment = 4;
+ props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 4;
+ props[ATOMIC_TYPE_LONGLONG].alignment = 4;
+ props[ATOMIC_TYPE_ULONGLONG].alignment = 4;
+ } else {
+ props[ATOMIC_TYPE_FLOAT].alignment = 4;
+ props[ATOMIC_TYPE_DOUBLE].alignment = 8;
+ props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 8;
+ props[ATOMIC_TYPE_LONGLONG].alignment = 8;
+ props[ATOMIC_TYPE_ULONGLONG].alignment = 8;
+ }
+ if (force_long_double_size > 0) {
+ props[ATOMIC_TYPE_LONG_DOUBLE].size = force_long_double_size;
+ props[ATOMIC_TYPE_LONG_DOUBLE].alignment = force_long_double_size;
}
/* TODO: make this configurable for platforms which do not use byte sized
obstack_free(type_obst, NULL);
}
-void type_set_output(FILE *stream)
-{
- out = stream;
-}
-
void print_type_qualifiers(type_qualifiers_t qualifiers)
{
- int first = 1;
if (qualifiers & TYPE_QUALIFIER_CONST) {
- fputs(" const" + first, out);
- first = 0;
+ print_string("const ");
}
if (qualifiers & TYPE_QUALIFIER_VOLATILE) {
- fputs(" volatile" + first, out);
- first = 0;
+ print_string("volatile ");
}
if (qualifiers & TYPE_QUALIFIER_RESTRICT) {
- fputs(" restrict" + first, out);
- first = 0;
+ print_string("restrict ");
}
}
static void print_atomic_kinds(atomic_type_kind_t kind)
{
const char *s = get_atomic_kind_name(kind);
- fputs(s, out);
+ print_string(s);
}
/**
static void print_atomic_type(const atomic_type_t *type)
{
print_type_qualifiers(type->base.qualifiers);
- if (type->base.qualifiers != 0)
- fputc(' ', out);
print_atomic_kinds(type->akind);
}
*
* @param type The type.
*/
-static
-void print_complex_type(const complex_type_t *type)
+static void print_complex_type(const complex_type_t *type)
{
- int empty = type->base.qualifiers == 0;
print_type_qualifiers(type->base.qualifiers);
- fputs(" _Complex " + empty, out);
+ print_string("_Complex");
print_atomic_kinds(type->akind);
}
*
* @param type The type.
*/
-static
-void print_imaginary_type(const imaginary_type_t *type)
+static void print_imaginary_type(const imaginary_type_t *type)
{
- int empty = type->base.qualifiers == 0;
print_type_qualifiers(type->base.qualifiers);
- fputs(" _Imaginary " + empty, out);
+ print_string("_Imaginary ");
print_atomic_kinds(type->akind);
}
case LINKAGE_C:
if (c_mode & _CXX)
- fputs("extern \"C\" ", out);
+ print_string("extern \"C\" ");
break;
case LINKAGE_CXX:
if (!(c_mode & _CXX))
- fputs("extern \"C++\" ", out);
+ print_string("extern \"C++\" ");
break;
}
print_type_qualifiers(type->base.qualifiers);
- if (type->base.qualifiers != 0)
- fputc(' ', out);
intern_print_type_pre(type->return_type);
cc_kind_t cc = type->calling_convention;
restart:
switch (cc) {
- case CC_CDECL: fputs(" __cdecl", out); break;
- case CC_STDCALL: fputs(" __stdcall", out); break;
- case CC_FASTCALL: fputs(" __fastcall", out); break;
- case CC_THISCALL: fputs(" __thiscall", out); break;
+ case CC_CDECL: print_string(" __cdecl"); break;
+ case CC_STDCALL: print_string(" __stdcall"); break;
+ case CC_FASTCALL: print_string(" __fastcall"); break;
+ case CC_THISCALL: print_string(" __thiscall"); break;
case CC_DEFAULT:
if (default_calling_convention != CC_CDECL) {
/* show the default calling convention if its not cdecl */
static void print_function_type_post(const function_type_t *type,
const scope_t *parameters)
{
- fputc('(', out);
+ print_string("(");
bool first = true;
if (parameters == NULL) {
function_parameter_t *parameter = type->parameters;
if (first) {
first = false;
} else {
- fputs(", ", out);
+ print_string(", ");
}
print_type(parameter->type);
}
if (first) {
first = false;
} else {
- fputs(", ", out);
+ print_string(", ");
}
const type_t *const type = parameter->declaration.type;
if (type == NULL) {
- fputs(parameter->base.symbol->string, out);
+ print_string(parameter->base.symbol->string);
} else {
print_type_ext(type, parameter->base.symbol, NULL);
}
if (first) {
first = false;
} else {
- fputs(", ", out);
+ print_string(", ");
}
- fputs("...", out);
+ print_string("...");
}
if (first && !type->unspecified_parameters) {
- fputs("void", out);
+ print_string("void");
}
- fputc(')', out);
+ print_string(")");
intern_print_type_post(type->return_type);
}
type_t const *const points_to = type->points_to;
intern_print_type_pre(points_to);
if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
- fputs(" (", out);
+ print_string(" (");
variable_t *const variable = type->base_variable;
if (variable != NULL) {
- fputs(" __based(", out);
- fputs(variable->base.base.symbol->string, out);
- fputs(") ", out);
+ print_string(" __based(");
+ print_string(variable->base.base.symbol->string);
+ print_string(") ");
}
- fputc('*', out);
+ print_string("*");
type_qualifiers_t const qual = type->base.qualifiers;
if (qual != 0)
- fputc(' ', out);
+ print_string(" ");
print_type_qualifiers(qual);
}
{
type_t const *const points_to = type->points_to;
if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
- fputc(')', out);
+ print_string(")");
intern_print_type_post(points_to);
}
type_t const *const refers_to = type->refers_to;
intern_print_type_pre(refers_to);
if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
- fputs(" (", out);
- fputc('&', out);
+ print_string(" (");
+ print_string("&");
}
/**
{
type_t const *const refers_to = type->refers_to;
if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
- fputc(')', out);
+ print_string(")");
intern_print_type_post(refers_to);
}
*/
static void print_array_type_post(const array_type_t *type)
{
- fputc('[', out);
+ print_string("[");
if (type->is_static) {
- fputs("static ", out);
+ print_string("static ");
}
print_type_qualifiers(type->base.qualifiers);
- if (type->base.qualifiers != 0)
- fputc(' ', out);
if (type->size_expression != NULL
&& (print_implicit_array_size || !type->has_implicit_size)) {
print_expression(type->size_expression);
}
- fputc(']', out);
+ print_string("]");
intern_print_type_post(type->element_type);
}
*/
static void print_bitfield_type_post(const bitfield_type_t *type)
{
- fputs(" : ", out);
+ print_string(" : ");
print_expression(type->size_expression);
intern_print_type_post(type->base_type);
}
*/
void print_enum_definition(const enum_t *enume)
{
- fputs("{\n", out);
+ print_string("{\n");
change_indent(1);
entry = entry->base.next) {
print_indent();
- fputs(entry->base.symbol->string, out);
+ print_string(entry->base.symbol->string);
if (entry->enum_value.value != NULL) {
- fputs(" = ", out);
+ print_string(" = ");
/* skip the implicit cast */
expression_t *expression = entry->enum_value.value;
}
print_expression(expression);
}
- fputs(",\n", out);
+ print_string(",\n");
}
change_indent(-1);
print_indent();
- fputc('}', out);
+ print_string("}");
}
/**
*/
static void print_type_enum(const enum_type_t *type)
{
- int empty = type->base.qualifiers == 0;
print_type_qualifiers(type->base.qualifiers);
- fputs(" enum " + empty, out);
+ print_string("enum ");
enum_t *enume = type->enume;
symbol_t *symbol = enume->base.symbol;
if (symbol != NULL) {
- fputs(symbol->string, out);
+ print_string(symbol->string);
} else {
print_enum_definition(enume);
}
*/
void print_compound_definition(const compound_t *compound)
{
- fputs("{\n", out);
+ print_string("{\n");
change_indent(1);
entity_t *entity = compound->members.entities;
print_indent();
print_entity(entity);
- fputc('\n', out);
+ print_string("\n");
}
change_indent(-1);
print_indent();
- fputc('}', out);
+ print_string("}");
if (compound->modifiers & DM_TRANSPARENT_UNION) {
- fputs("__attribute__((__transparent_union__))", out);
+ print_string("__attribute__((__transparent_union__))");
}
}
*/
static void print_compound_type(const compound_type_t *type)
{
- int empty = type->base.qualifiers == 0;
print_type_qualifiers(type->base.qualifiers);
if (type->base.kind == TYPE_COMPOUND_STRUCT) {
- fputs(" struct " + empty, out);
+ print_string("struct ");
} else {
assert(type->base.kind == TYPE_COMPOUND_UNION);
- fputs(" union " + empty, out);
+ print_string("union ");
}
compound_t *compound = type->compound;
symbol_t *symbol = compound->base.symbol;
if (symbol != NULL) {
- fputs(symbol->string, out);
+ print_string(symbol->string);
} else {
print_compound_definition(compound);
}
static void print_typedef_type_pre(const typedef_type_t *const type)
{
print_type_qualifiers(type->base.qualifiers);
- if (type->base.qualifiers != 0)
- fputc(' ', out);
- fputs(type->typedefe->base.symbol->string, out);
+ print_string(type->typedefe->base.symbol->string);
}
/**
*/
static void print_typeof_type_pre(const typeof_type_t *const type)
{
- fputs("typeof(", out);
+ print_string("typeof(");
if (type->expression != NULL) {
print_expression(type->expression);
} else {
print_type(type->typeof_type);
}
- fputc(')', out);
+ print_string(")");
}
/**
{
switch(type->kind) {
case TYPE_ERROR:
- fputs("<error>", out);
+ print_string("<error>");
return;
case TYPE_INVALID:
- fputs("<invalid>", out);
+ print_string("<invalid>");
return;
case TYPE_ENUM:
print_type_enum(&type->enumt);
print_compound_type(&type->compound);
return;
case TYPE_BUILTIN:
- fputs(type->builtin.symbol->string, out);
+ print_string(type->builtin.symbol->string);
return;
case TYPE_FUNCTION:
print_function_type_pre(&type->function);
print_typeof_type_pre(&type->typeoft);
return;
}
- fputs("unknown", out);
+ print_string("unknown");
}
/**
const scope_t *parameters)
{
if (type == NULL) {
- fputs("nil type", out);
+ print_string("nil type");
return;
}
intern_print_type_pre(type);
if (symbol != NULL) {
- fputc(' ', out);
- fputs(symbol->string, out);
+ print_string(" ");
+ print_string(symbol->string);
}
if (type->kind == TYPE_FUNCTION) {
print_function_type_post(&type->function, parameters);
}
}
-/**
- * Return the size of a type AST node.
- *
- * @param type The type.
- */
-static size_t get_type_struct_size(const type_t *type)
-{
- switch(type->kind) {
- case TYPE_ATOMIC: return sizeof(atomic_type_t);
- case TYPE_COMPLEX: return sizeof(complex_type_t);
- case TYPE_IMAGINARY: return sizeof(imaginary_type_t);
- case TYPE_COMPOUND_STRUCT:
- case TYPE_COMPOUND_UNION: return sizeof(compound_type_t);
- case TYPE_ENUM: return sizeof(enum_type_t);
- case TYPE_FUNCTION: return sizeof(function_type_t);
- case TYPE_POINTER: return sizeof(pointer_type_t);
- case TYPE_REFERENCE: return sizeof(reference_type_t);
- case TYPE_ARRAY: return sizeof(array_type_t);
- case TYPE_BUILTIN: return sizeof(builtin_type_t);
- case TYPE_TYPEDEF: return sizeof(typedef_type_t);
- case TYPE_TYPEOF: return sizeof(typeof_type_t);
- case TYPE_BITFIELD: return sizeof(bitfield_type_t);
- case TYPE_ERROR: panic("error type found");
- case TYPE_INVALID: panic("invalid type found");
- }
- panic("unknown type found");
-}
-
/**
* Duplicates a type.
*
*/
type_t *duplicate_type(const type_t *type)
{
- size_t size = get_type_struct_size(type);
+ size_t size = get_type_struct_size(type->kind);
type_t *copy = obstack_alloc(type_obst, size);
memcpy(copy, type, size);
assert(!is_typeref(type));
switch (type->kind) {
- case TYPE_POINTER: return true;
- case TYPE_BUILTIN: return is_type_scalar(type->builtin.real_type);
- default: break;
+ case TYPE_POINTER: return true;
+ case TYPE_BUILTIN: return is_type_scalar(type->builtin.real_type);
+ default: break;
}
return is_type_arithmetic(type);
if (cc1 != cc2)
return false;
- /* can parameters be compared? */
- if (func1->unspecified_parameters || func2->unspecified_parameters)
- return true;
-
if (func1->variadic != func2->variadic)
return false;
+ /* can parameters be compared? */
+ if ((func1->unspecified_parameters && !func1->kr_style_parameters)
+ || (func2->unspecified_parameters && !func2->kr_style_parameters))
+ return true;
+
/* TODO: handling of unspecified parameters not correct yet */
/* all argument types must be compatible */
return identify_new_type(type);
}
+static entity_t *pack_bitfield_members_big_endian(il_size_t *struct_offset,
+ il_alignment_t *struct_alignment, bool packed, entity_t *first)
+{
+ type_t *current_base_type = NULL;
+ il_size_t offset = *struct_offset;
+ il_alignment_t alignment = *struct_alignment;
+ size_t bit_offset = 0;
+
+ if (packed)
+ panic("packed bitfields on big-endian arch not supported yet");
+
+ entity_t *member;
+ for (member = first; member != NULL; member = member->base.next) {
+ if (member->kind != ENTITY_COMPOUND_MEMBER)
+ continue;
+
+ type_t *type = member->declaration.type;
+ if (type->kind != TYPE_BITFIELD)
+ break;
+
+ size_t bit_size = type->bitfield.bit_size;
+ type_t *base_type = skip_typeref(type->bitfield.base_type);
+
+ /* see if we need to start a new "bucket" */
+ if (base_type != current_base_type || bit_size > bit_offset) {
+ if (current_base_type != NULL)
+ offset += get_type_size(current_base_type);
+
+ current_base_type = base_type;
+ il_alignment_t base_alignment = get_type_alignment(base_type);
+ il_alignment_t alignment_mask = base_alignment-1;
+ if (base_alignment > alignment)
+ alignment = base_alignment;
+ offset = (offset + base_alignment-1) & ~alignment_mask;
+ bit_offset = get_type_size(base_type) * BITS_PER_BYTE;
+ assert(bit_offset >= bit_size);
+ }
+
+ bit_offset -= bit_size;
+ member->compound_member.offset = offset;
+ member->compound_member.bit_offset = bit_offset;
+ }
+
+ if (current_base_type != NULL)
+ offset += get_type_size(current_base_type);
+
+ *struct_offset = offset;
+ *struct_alignment = alignment;
+ return member;
+}
+
static entity_t *pack_bitfield_members(il_size_t *struct_offset,
il_alignment_t *struct_alignment,
bool packed, entity_t *first)
entity_t *member;
for (member = first; member != NULL; member = member->base.next) {
if (member->kind != ENTITY_COMPOUND_MEMBER)
- break;
+ continue;
type_t *type = member->declaration.type;
if (type->kind != TYPE_BITFIELD)
*struct_offset = offset;
*struct_alignment = alignment;
-
return member;
}
-/**
- * Finish the construction of a struct type by calculating its size, offsets,
- * alignment.
- */
void layout_struct_type(compound_type_t *type)
{
assert(type->compound != NULL);
}
if (skipped->kind == TYPE_BITFIELD) {
- entry = pack_bitfield_members(&offset, &alignment,
- compound->packed, entry);
+ if (byte_order_big_endian) {
+ entry = pack_bitfield_members_big_endian(&offset, &alignment,
+ compound->packed,
+ entry);
+ } else {
+ entry = pack_bitfield_members(&offset, &alignment,
+ compound->packed, entry);
+ }
continue;
}
compound->layouted = true;
}
-/**
- * Finish the construction of an union type by calculating
- * its size and alignment.
- */
void layout_union_type(compound_type_t *type)
{
assert(type->compound != NULL);
compound->alignment = alignment;
}
+static function_parameter_t *allocate_parameter(type_t *const type)
+{
+ function_parameter_t *const param
+ = obstack_alloc(type_obst, sizeof(*param));
+ memset(param, 0, sizeof(*param));
+ param->type = type;
+ return param;
+}
+
+type_t *make_function_2_type(type_t *return_type, type_t *argument_type1,
+ type_t *argument_type2)
+{
+ function_parameter_t *const parameter2 = allocate_parameter(argument_type2);
+ function_parameter_t *const parameter1 = allocate_parameter(argument_type1);
+ parameter1->next = parameter2;
+
+ type_t *type = allocate_type_zero(TYPE_FUNCTION);
+ type->function.return_type = return_type;
+ type->function.parameters = parameter1;
+ type->function.linkage = LINKAGE_C;
+
+ return identify_new_type(type);
+}
+
+type_t *make_function_1_type(type_t *return_type, type_t *argument_type)
+{
+ function_parameter_t *const parameter = allocate_parameter(argument_type);
+
+ type_t *type = allocate_type_zero(TYPE_FUNCTION);
+ type->function.return_type = return_type;
+ type->function.parameters = parameter;
+ type->function.linkage = LINKAGE_C;
+
+ return identify_new_type(type);
+}
+
+type_t *make_function_1_type_variadic(type_t *return_type,
+ type_t *argument_type)
+{
+ function_parameter_t *const parameter = allocate_parameter(argument_type);
+
+ type_t *type = allocate_type_zero(TYPE_FUNCTION);
+ type->function.return_type = return_type;
+ type->function.parameters = parameter;
+ type->function.variadic = true;
+ type->function.linkage = LINKAGE_C;
+
+ return identify_new_type(type);
+}
+
+type_t *make_function_0_type(type_t *return_type)
+{
+ type_t *type = allocate_type_zero(TYPE_FUNCTION);
+ type->function.return_type = return_type;
+ type->function.parameters = NULL;
+ type->function.linkage = LINKAGE_C;
+
+ return identify_new_type(type);
+}
+
+type_t *make_function_type(type_t *return_type, int n_types,
+ type_t *const *argument_types,
+ decl_modifiers_t modifiers)
+{
+ type_t *type = allocate_type_zero(TYPE_FUNCTION);
+ type->function.return_type = return_type;
+ type->function.modifiers |= modifiers;
+ type->function.linkage = LINKAGE_C;
+
+ function_parameter_t *last = NULL;
+ for (int i = 0; i < n_types; ++i) {
+ function_parameter_t *parameter = allocate_parameter(argument_types[i]);
+ if (last == NULL) {
+ type->function.parameters = parameter;
+ } else {
+ last->next = parameter;
+ }
+ last = parameter;
+ }
+
+ return identify_new_type(type);
+}
+
/**
* Debug helper. Prints the given type to stdout.
*/
static __attribute__((unused))
void dbg_type(const type_t *type)
{
- FILE *old_out = out;
- out = stderr;
+ print_to_file(stderr);
print_type(type);
- puts("\n");
+ print_string("\n");
fflush(stderr);
- out = old_out;
}
projects / cparser / blobdiff