- Fix handling of structures stored in memory
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@899 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman
parent
9c8a06a379
commit
0044307756
|
|
@ -957,10 +957,13 @@ static void loc(FILE *fp, struct compile_state *state, struct triple *triple)
|
|||
{
|
||||
int col;
|
||||
if (triple) {
|
||||
struct occurance *spot;
|
||||
spot = triple->occurance;
|
||||
while(spot->parent) {
|
||||
spot = spot->parent;
|
||||
}
|
||||
fprintf(fp, "%s:%d.%d: ",
|
||||
triple->occurance->filename,
|
||||
triple->occurance->line,
|
||||
triple->occurance->col);
|
||||
spot->filename, spot->line, spot->col);
|
||||
return;
|
||||
}
|
||||
if (!state->file) {
|
||||
|
|
@ -4007,10 +4010,11 @@ static size_t field_offset(struct compile_state *state,
|
|||
while((type->type & TYPE_MASK) == TYPE_PRODUCT) {
|
||||
if (type->left->field_ident == field) {
|
||||
type = type->left;
|
||||
break;
|
||||
}
|
||||
size += size_of(state, type->left);
|
||||
type = type->right;
|
||||
align = align_of(state, type->left);
|
||||
align = align_of(state, type);
|
||||
pad = align - (size % align);
|
||||
size += pad;
|
||||
}
|
||||
|
|
@ -4379,16 +4383,13 @@ static int is_lvalue(struct compile_state *state, struct triple *def)
|
|||
if (!is_stable(state, def)) {
|
||||
return 0;
|
||||
}
|
||||
if (def->type->type & QUAL_CONST) {
|
||||
ret = 0;
|
||||
}
|
||||
else if (def->op == OP_DOT) {
|
||||
if (def->op == OP_DOT) {
|
||||
ret = is_lvalue(state, RHS(def, 0));
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void lvalue(struct compile_state *state, struct triple *def)
|
||||
static void clvalue(struct compile_state *state, struct triple *def)
|
||||
{
|
||||
if (!def) {
|
||||
internal_error(state, def, "nothing where lvalue expected?");
|
||||
|
|
@ -4397,6 +4398,13 @@ static void lvalue(struct compile_state *state, struct triple *def)
|
|||
error(state, def, "lvalue expected");
|
||||
}
|
||||
}
|
||||
static void lvalue(struct compile_state *state, struct triple *def)
|
||||
{
|
||||
clvalue(state, def);
|
||||
if (def->type->type & QUAL_CONST) {
|
||||
error(state, def, "modifable lvalue expected");
|
||||
}
|
||||
}
|
||||
|
||||
static int is_pointer(struct triple *def)
|
||||
{
|
||||
|
|
@ -4432,7 +4440,7 @@ static struct triple *do_mk_addr_expr(struct compile_state *state,
|
|||
struct triple *expr, struct type *type, ulong_t offset)
|
||||
{
|
||||
struct triple *result;
|
||||
lvalue(state, expr);
|
||||
clvalue(state, expr);
|
||||
|
||||
result = 0;
|
||||
if (expr->op == OP_ADECL) {
|
||||
|
|
@ -4469,10 +4477,6 @@ static struct triple *mk_deref_expr(
|
|||
struct type *base_type;
|
||||
pointer(state, expr);
|
||||
base_type = expr->type->left;
|
||||
if (!TYPE_PTR(base_type->type) && !TYPE_ARITHMETIC(base_type->type)) {
|
||||
error(state, 0,
|
||||
"Only pointer and arithmetic values can be dereferenced");
|
||||
}
|
||||
return triple(state, OP_DEREF, base_type, expr, 0);
|
||||
}
|
||||
|
||||
|
|
@ -4593,6 +4597,9 @@ static struct triple *write_expr(
|
|||
if (!is_lvalue(state, dest)) {
|
||||
internal_error(state, 0, "writing to a non lvalue?");
|
||||
}
|
||||
if (dest->type->type & QUAL_CONST) {
|
||||
internal_error(state, 0, "modifable lvalue expexted");
|
||||
}
|
||||
|
||||
write_compatible(state, dest->type, rval->type);
|
||||
|
||||
|
|
@ -4790,6 +4797,9 @@ static int expr_depth(struct compile_state *state, struct triple *ins)
|
|||
static struct triple *flatten(
|
||||
struct compile_state *state, struct triple *first, struct triple *ptr);
|
||||
|
||||
static struct triple *mk_add_expr(
|
||||
struct compile_state *state, struct triple *left, struct triple *right);
|
||||
|
||||
static struct triple *flatten_generic(
|
||||
struct compile_state *state, struct triple *first, struct triple *ptr)
|
||||
{
|
||||
|
|
@ -5145,8 +5155,15 @@ static struct triple *flatten(
|
|||
{
|
||||
struct triple *base;
|
||||
base = RHS(ptr, 0);
|
||||
base = flatten(state, first, base);
|
||||
if (base->op == OP_VAL_VEC) {
|
||||
if (base->op == OP_DEREF) {
|
||||
ulong_t offset;
|
||||
offset = field_offset(state, base->type, ptr->u.field);
|
||||
ptr = mk_add_expr(state, RHS(base, 0),
|
||||
int_const(state, &ulong_type, offset));
|
||||
free_triple(state, base);
|
||||
}
|
||||
else if (base->op == OP_VAL_VEC) {
|
||||
base = flatten(state, first, base);
|
||||
ptr = struct_field(state, base, ptr->u.field);
|
||||
}
|
||||
break;
|
||||
|
|
@ -5694,13 +5711,13 @@ static void flatten_structures(struct compile_state *state)
|
|||
do {
|
||||
ins->id &= ~TRIPLE_FLAG_FLATTENED;
|
||||
if ((ins->type->type & TYPE_MASK) == TYPE_STRUCT) {
|
||||
internal_error(state, 0, "STRUCT_TYPE remains?");
|
||||
internal_error(state, ins, "STRUCT_TYPE remains?");
|
||||
}
|
||||
if (ins->op == OP_DOT) {
|
||||
internal_error(state, 0, "OP_DOT remains?");
|
||||
internal_error(state, ins, "OP_DOT remains?");
|
||||
}
|
||||
if (ins->op == OP_VAL_VEC) {
|
||||
internal_error(state, 0, "OP_VAL_VEC remains?");
|
||||
internal_error(state, ins, "OP_VAL_VEC remains?");
|
||||
}
|
||||
ins = ins->next;
|
||||
} while(ins != first);
|
||||
|
|
@ -7432,25 +7449,31 @@ static struct triple *eval_const_expr(
|
|||
struct compile_state *state, struct triple *expr)
|
||||
{
|
||||
struct triple *def;
|
||||
struct triple *head, *ptr;
|
||||
head = label(state); /* dummy initial triple */
|
||||
flatten(state, head, expr);
|
||||
for(ptr = head->next; ptr != head; ptr = ptr->next) {
|
||||
simplify(state, ptr);
|
||||
if (is_const(expr)) {
|
||||
def = expr;
|
||||
}
|
||||
/* Remove the constant value the tail of the list */
|
||||
def = head->prev;
|
||||
def->prev->next = def->next;
|
||||
def->next->prev = def->prev;
|
||||
def->next = def->prev = def;
|
||||
if (!is_const(def)) {
|
||||
internal_error(state, 0, "Not a constant expression");
|
||||
else {
|
||||
/* If we don't start out as a constant simplify into one */
|
||||
struct triple *head, *ptr;
|
||||
head = label(state); /* dummy initial triple */
|
||||
flatten(state, head, expr);
|
||||
for(ptr = head->next; ptr != head; ptr = ptr->next) {
|
||||
simplify(state, ptr);
|
||||
}
|
||||
/* Remove the constant value the tail of the list */
|
||||
def = head->prev;
|
||||
def->prev->next = def->next;
|
||||
def->next->prev = def->prev;
|
||||
def->next = def->prev = def;
|
||||
if (!is_const(def)) {
|
||||
error(state, 0, "Not a constant expression");
|
||||
}
|
||||
/* Free the intermediate expressions */
|
||||
while(head->next != head) {
|
||||
release_triple(state, head->next);
|
||||
}
|
||||
free_triple(state, head);
|
||||
}
|
||||
/* Free the intermediate expressions */
|
||||
while(head->next != head) {
|
||||
release_triple(state, head->next);
|
||||
}
|
||||
free_triple(state, head);
|
||||
return def;
|
||||
}
|
||||
|
||||
|
|
@ -8364,7 +8387,7 @@ static struct type *struct_declarator(
|
|||
#endif
|
||||
|
||||
static struct type *struct_or_union_specifier(
|
||||
struct compile_state *state, unsigned int specifiers)
|
||||
struct compile_state *state, unsigned int spec)
|
||||
{
|
||||
struct type *struct_type;
|
||||
struct hash_entry *ident;
|
||||
|
|
@ -8424,13 +8447,13 @@ static struct type *struct_or_union_specifier(
|
|||
eat(state, TOK_SEMI);
|
||||
} while(peek(state) != TOK_RBRACE);
|
||||
eat(state, TOK_RBRACE);
|
||||
struct_type = new_type(TYPE_STRUCT, struct_type, 0);
|
||||
struct_type = new_type(TYPE_STRUCT | spec, struct_type, 0);
|
||||
struct_type->type_ident = ident;
|
||||
struct_type->elements = elements;
|
||||
symbol(state, ident, &ident->sym_struct, 0, struct_type);
|
||||
}
|
||||
if (ident && ident->sym_struct) {
|
||||
struct_type = ident->sym_struct->type;
|
||||
struct_type = clone_type(spec, ident->sym_struct->type);
|
||||
}
|
||||
else if (ident && !ident->sym_struct) {
|
||||
error(state, 0, "struct %s undeclared", ident->name);
|
||||
|
|
@ -8762,34 +8785,67 @@ static struct type *decl_specifiers(struct compile_state *state)
|
|||
return type;
|
||||
}
|
||||
|
||||
static unsigned designator(struct compile_state *state)
|
||||
struct field_info {
|
||||
struct type *type;
|
||||
size_t offset;
|
||||
};
|
||||
|
||||
static struct field_info designator(struct compile_state *state, struct type *type)
|
||||
{
|
||||
int tok;
|
||||
unsigned index;
|
||||
index = -1U;
|
||||
struct field_info info;
|
||||
info.offset = ~0U;
|
||||
info.type = 0;
|
||||
do {
|
||||
switch(peek(state)) {
|
||||
case TOK_LBRACKET:
|
||||
{
|
||||
struct triple *value;
|
||||
if ((type->type & TYPE_MASK) != TYPE_ARRAY) {
|
||||
error(state, 0, "Array designator not in array initializer");
|
||||
}
|
||||
eat(state, TOK_LBRACKET);
|
||||
value = constant_expr(state);
|
||||
eat(state, TOK_RBRACKET);
|
||||
index = value->u.cval;
|
||||
|
||||
info.type = type->left;
|
||||
info.offset = value->u.cval * size_of(state, info.type);
|
||||
break;
|
||||
}
|
||||
case TOK_DOT:
|
||||
{
|
||||
struct hash_entry *field;
|
||||
struct type *member;
|
||||
if ((type->type & TYPE_MASK) != TYPE_STRUCT) {
|
||||
error(state, 0, "Struct designator not in struct initializer");
|
||||
}
|
||||
eat(state, TOK_DOT);
|
||||
eat(state, TOK_IDENT);
|
||||
error(state, 0, "Struct Designators not currently supported");
|
||||
field = state->token[0].ident;
|
||||
info.offset = 0;
|
||||
member = type->left;
|
||||
while((member->type & TYPE_MASK) == TYPE_PRODUCT) {
|
||||
if (member->left->field_ident == field) {
|
||||
member = member->left;
|
||||
break;
|
||||
}
|
||||
info.offset += size_of(state, member->left);
|
||||
member = member->right;
|
||||
}
|
||||
if (member->field_ident != field) {
|
||||
error(state, 0, "%s is not a member",
|
||||
field->name);
|
||||
}
|
||||
info.type = member;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
error(state, 0, "Invalid designator");
|
||||
}
|
||||
tok = peek(state);
|
||||
} while((tok == TOK_LBRACKET) || (tok == TOK_DOT));
|
||||
eat(state, TOK_EQ);
|
||||
return index;
|
||||
return info;
|
||||
}
|
||||
|
||||
static struct triple *initializer(
|
||||
|
|
@ -8801,74 +8857,87 @@ static struct triple *initializer(
|
|||
}
|
||||
else {
|
||||
int comma;
|
||||
unsigned index, max_index;
|
||||
size_t max_offset;
|
||||
struct field_info info;
|
||||
void *buf;
|
||||
max_index = index = 0;
|
||||
if ((type->type & TYPE_MASK) == TYPE_ARRAY) {
|
||||
max_index = type->elements;
|
||||
if (type->elements == ELEMENT_COUNT_UNSPECIFIED) {
|
||||
type->elements = 0;
|
||||
}
|
||||
} else {
|
||||
error(state, 0, "Struct initializers not currently supported");
|
||||
if (((type->type & TYPE_MASK) != TYPE_ARRAY) &&
|
||||
((type->type & TYPE_MASK) != TYPE_STRUCT)) {
|
||||
internal_error(state, 0, "unknown initializer type");
|
||||
}
|
||||
buf = xcmalloc(size_of(state, type), "initializer");
|
||||
info.offset = 0;
|
||||
info.type = type->left;
|
||||
if (type->elements == ELEMENT_COUNT_UNSPECIFIED) {
|
||||
max_offset = 0;
|
||||
} else {
|
||||
max_offset = size_of(state, type);
|
||||
}
|
||||
buf = xcmalloc(max_offset, "initializer");
|
||||
eat(state, TOK_LBRACE);
|
||||
do {
|
||||
struct triple *value;
|
||||
struct type *value_type;
|
||||
size_t value_size;
|
||||
void *dest;
|
||||
int tok;
|
||||
comma = 0;
|
||||
tok = peek(state);
|
||||
if ((tok == TOK_LBRACKET) || (tok == TOK_DOT)) {
|
||||
index = designator(state);
|
||||
info = designator(state, type);
|
||||
}
|
||||
if ((max_index != ELEMENT_COUNT_UNSPECIFIED) &&
|
||||
(index > max_index)) {
|
||||
if ((type->elements != ELEMENT_COUNT_UNSPECIFIED) &&
|
||||
(info.offset >= max_offset)) {
|
||||
error(state, 0, "element beyond bounds");
|
||||
}
|
||||
value_type = 0;
|
||||
if ((type->type & TYPE_MASK) == TYPE_ARRAY) {
|
||||
value_type = info.type;
|
||||
if ((value_type->type & TYPE_MASK) == TYPE_PRODUCT) {
|
||||
value_type = type->left;
|
||||
}
|
||||
value = eval_const_expr(state, initializer(state, value_type));
|
||||
value_size = size_of(state, value_type);
|
||||
if (((type->type & TYPE_MASK) == TYPE_ARRAY) &&
|
||||
(max_index == ELEMENT_COUNT_UNSPECIFIED) &&
|
||||
(type->elements <= index)) {
|
||||
(type->elements == ELEMENT_COUNT_UNSPECIFIED) &&
|
||||
(max_offset <= info.offset)) {
|
||||
void *old_buf;
|
||||
size_t old_size;
|
||||
old_buf = buf;
|
||||
old_size = size_of(state, type);
|
||||
type->elements = index + 1;
|
||||
buf = xmalloc(size_of(state, type), "initializer");
|
||||
old_size = max_offset;
|
||||
max_offset = info.offset + value_size;
|
||||
buf = xmalloc(max_offset, "initializer");
|
||||
memcpy(buf, old_buf, old_size);
|
||||
xfree(old_buf);
|
||||
}
|
||||
dest = ((char *)buf) + info.offset;
|
||||
if (value->op == OP_BLOBCONST) {
|
||||
memcpy((char *)buf + index * value_size, value->u.blob, value_size);
|
||||
memcpy(dest, value->u.blob, value_size);
|
||||
}
|
||||
else if ((value->op == OP_INTCONST) && (value_size == 1)) {
|
||||
*(((uint8_t *)buf) + index) = value->u.cval & 0xff;
|
||||
*((uint8_t *)dest) = value->u.cval & 0xff;
|
||||
}
|
||||
else if ((value->op == OP_INTCONST) && (value_size == 2)) {
|
||||
*(((uint16_t *)buf) + index) = value->u.cval & 0xffff;
|
||||
*((uint16_t *)dest) = value->u.cval & 0xffff;
|
||||
}
|
||||
else if ((value->op == OP_INTCONST) && (value_size == 4)) {
|
||||
*(((uint32_t *)buf) + index) = value->u.cval & 0xffffffff;
|
||||
*((uint32_t *)dest) = value->u.cval & 0xffffffff;
|
||||
}
|
||||
else {
|
||||
fprintf(stderr, "%d %d\n",
|
||||
value->op, value_size);
|
||||
internal_error(state, 0, "unhandled constant initializer");
|
||||
}
|
||||
free_triple(state, value);
|
||||
if (peek(state) == TOK_COMMA) {
|
||||
eat(state, TOK_COMMA);
|
||||
comma = 1;
|
||||
}
|
||||
index += 1;
|
||||
info.offset += value_size;
|
||||
if ((info.type->type & TYPE_MASK) == TYPE_PRODUCT) {
|
||||
info.type = info.type->right;
|
||||
}
|
||||
} while(comma && (peek(state) != TOK_RBRACE));
|
||||
if ((type->elements == ELEMENT_COUNT_UNSPECIFIED) &&
|
||||
((type->type & TYPE_MASK) == TYPE_ARRAY)) {
|
||||
type->elements = max_offset / size_of(state, type->left);
|
||||
}
|
||||
eat(state, TOK_RBRACE);
|
||||
result = triple(state, OP_BLOBCONST, type, 0, 0);
|
||||
result->u.blob = buf;
|
||||
|
|
@ -9028,7 +9097,8 @@ static struct triple *do_decl(struct compile_state *state,
|
|||
default:
|
||||
internal_error(state, 0, "Undefined storage class");
|
||||
}
|
||||
if (((type->type & STOR_MASK) == STOR_STATIC) &&
|
||||
if (ident &&
|
||||
((type->type & STOR_MASK) == STOR_STATIC) &&
|
||||
((type->type & QUAL_CONST) == 0)) {
|
||||
error(state, 0, "non const static variables not supported");
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue