/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
"text", "data", "rodata", "bss", "ctors", "dtors"
};
static const char *const type[] = {
- "progbits", "progbits", "progbits", "nobits", "init_array", "fini_array"
+ "progbits", "progbits", "progbits", "nobits", "progbits", "progbits"
};
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O) {
return get_tarval_undefined();
}
-static int initializer_is_string_const(const ir_initializer_t *initializer)
+static bool initializer_is_string_const(const ir_initializer_t *initializer)
{
size_t i, len;
- int found_printable = 0;
+ bool found_printable = false;
if (initializer->kind != IR_INITIALIZER_COMPOUND)
- return 0;
+ return false;
len = initializer->compound.n_initializers;
if (len < 1)
- return 0;
+ return false;
for (i = 0; i < len; ++i) {
int c;
ir_tarval *tv;
tv = get_initializer_tarval(sub_initializer);
if (!tarval_is_constant(tv))
- return 0;
+ return false;
mode = get_tarval_mode(tv);
if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
- return 0;
+ return false;
c = get_tarval_long(tv);
if (isgraph(c) || isspace(c))
- found_printable = 1;
+ found_printable = true;
else if (c != 0)
- return 0;
+ return false;
if (i == len - 1 && c != '\0')
- return 0;
+ return false;
}
return found_printable;
}
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O
- && (linkage & IR_LINKAGE_HIDDEN_USER)) {
+ && (linkage & IR_LINKAGE_HIDDEN_USER)
+ && get_entity_ld_name(entity)[0] != '\0') {
be_emit_cstring("\t.no_dead_strip ");
be_gas_emit_entity(entity);
be_emit_char('\n');
case iro_Const:
tv = get_Const_tarval(init);
- /* it's a arithmetic value */
+ /* it's an arithmetic value */
emit_arith_tarval(tv, bytes);
return;
}
}
-static void emit_string_initializer(const ir_initializer_t *initializer)
+static size_t emit_string_initializer(const ir_initializer_t *initializer)
{
size_t i, len;
}
be_emit_cstring("\"\n");
be_emit_write_line();
+
+ return initializer->compound.n_initializers;
}
-enum normal_or_bitfield_kind {
+typedef enum normal_or_bitfield_kind {
NORMAL = 0,
TARVAL,
+ STRING,
BITFIELD
-};
+} normal_or_bitfield_kind;
typedef struct {
- enum normal_or_bitfield_kind kind;
+ normal_or_bitfield_kind kind;
union {
- ir_node *value;
- ir_tarval *tarval;
- unsigned char bf_val;
+ ir_node *value;
+ ir_tarval *tarval;
+ unsigned char bf_val;
+ const ir_initializer_t *string;
} v;
} normal_or_bitfield;
if (!is_type_variable_size(type)) {
return get_type_size_bytes(type);
} else {
- unsigned n_entries
+ size_t n_entries
= get_initializer_compound_n_entries(initializer);
- unsigned i;
+ size_t i;
unsigned initializer_size = get_type_size_bytes(type);
for (i = 0; i < n_entries; ++i) {
ir_entity *entity = get_compound_member(type, i);
{
assert((size_t) (vals - glob_vals) < max_vals);
+ if (initializer_is_string_const(initializer)) {
+ assert(vals->kind != BITFIELD);
+ vals->kind = STRING;
+ vals->v.string = initializer;
+ return;
+ }
+
switch (get_initializer_kind(initializer)) {
case IR_INITIALIZER_NULL:
return;
if (mode != NULL) {
size_t offset_bits
= get_entity_offset_bits_remainder(member);
- size_t value_len = get_mode_size_bits(mode);
- if (offset_bits != 0 ||
- (value_len != 8 && value_len != 16 && value_len != 32
- && value_len != 64) ||
- (is_Primitive_type(subtype) && get_primitive_base_type(subtype) != NULL)) {
+ if (is_Primitive_type(subtype)
+ && get_primitive_base_type(subtype) != NULL) {
emit_bitfield(&vals[offset], offset_bits,
sub_initializer, subtype);
continue;
+ } else {
+ assert(offset_bits == 0);
}
}
/* now write values sorted */
for (k = 0; k < size; ) {
- int space = 0;
- int elem_size = 1;
- if (vals[k].kind == NORMAL) {
+ int space = 0;
+ int elem_size = 1;
+ normal_or_bitfield_kind kind = vals[k].kind;
+ switch (kind) {
+ case NORMAL:
if (vals[k].v.value != NULL) {
emit_atomic_init(env, vals[k].v.value);
elem_size = get_mode_size_bytes(get_irn_mode(vals[k].v.value));
} else {
elem_size = 0;
}
- } else if (vals[k].kind == TARVAL) {
+ break;
+ case TARVAL: {
ir_tarval *tv = vals[k].v.tarval;
size_t size = get_mode_size_bytes(get_tarval_mode(tv));
emit_arith_tarval(tv, size);
be_emit_char('\n');
be_emit_write_line();
- } else {
- assert(vals[k].kind == BITFIELD);
+ break;
+ }
+ case STRING:
+ elem_size = emit_string_initializer(vals[k].v.string);
+ break;
+ case BITFIELD:
be_emit_irprintf("\t.byte\t%d\n", vals[k].v.bf_val);
be_emit_write_line();
+ break;
}
k += elem_size;
}
if (entity_is_null(entity)) {
- be_emit_irprintf("\t.space %u, 0\n", get_type_size_bytes(type));
- be_emit_write_line();
+ unsigned size = get_type_size_bytes(type);
+ if (size > 0) {
+ be_emit_irprintf("\t.space %u, 0\n", get_type_size_bytes(type));
+ be_emit_write_line();
+ }
} else if (entity_has_compound_ent_values(entity)) {
emit_compound_graph_init(env, entity);
} else {
*/
static void be_gas_emit_globals(ir_type *gt, be_gas_decl_env_t *env)
{
- int i, n = get_compound_n_members(gt);
+ size_t i, n = get_compound_n_members(gt);
for (i = 0; i < n; i++) {
ir_entity *ent = get_compound_member(gt, i);
be_emit_write_line();
}
}
+
+void emit_jump_table(const ir_node *node, long default_pn, ir_entity *entity,
+ get_cfop_target_func get_cfop_target)
+{
+ long switch_max = LONG_MIN;
+ ir_node *default_block = NULL;
+ unsigned long length;
+ const ir_edge_t *edge;
+ unsigned i;
+ ir_node **table;
+
+ /* go over all proj's and collect them */
+ foreach_out_edge(node, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
+ long pn = get_Proj_proj(proj);
+
+ /* check for default proj */
+ if (pn == default_pn) {
+ assert(default_block == NULL); /* more than 1 default_pn? */
+ default_block = get_cfop_target(proj);
+ } else {
+ switch_max = pn > switch_max ? pn : switch_max;
+ }
+ }
+ assert(switch_max > LONG_MIN);
+
+ length = (unsigned long) switch_max + 1;
+ /* the 16000 isn't a real limit of the architecture. But should protect us
+ * from seamingly endless compiler runs */
+ if (length > 16000) {
+ /* switch lowerer should have broken this monster to pieces... */
+ panic("too large switch encountered");
+ }
+
+ table = XMALLOCNZ(ir_node*, length);
+ foreach_out_edge(node, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
+ long pn = get_Proj_proj(proj);
+ if (pn == default_pn)
+ continue;
+
+ table[pn] = get_cfop_target(proj);
+ }
+
+ /* emit table */
+ be_gas_emit_switch_section(GAS_SECTION_RODATA);
+ be_emit_cstring("\t.align 4\n");
+ be_gas_emit_entity(entity);
+ be_emit_cstring(":\n");
+ for (i = 0; i < length; ++i) {
+ ir_node *block = table[i];
+ if (block == NULL)
+ block = default_block;
+ be_emit_cstring("\t.long ");
+ be_gas_emit_block_name(block);
+ be_emit_char('\n');
+ be_emit_write_line();
+ }
+ be_gas_emit_switch_section(GAS_SECTION_TEXT);
+
+ xfree(table);
+}
projects / libfirm / blobdiff