* @brief Dumps global variables and constants as gas assembler.
* @author Christian Wuerdig, Matthias Braun
* @date 04.11.2005
- * @version $Id$
*/
#include "config.h"
/** by default, we generate assembler code for the Linux gas */
object_file_format_t be_gas_object_file_format = OBJECT_FILE_FORMAT_ELF;
+elf_variant_t be_gas_elf_variant = ELF_VARIANT_NORMAL;
bool be_gas_emit_types = true;
char be_gas_elf_type_char = '@';
case GAS_SECTION_PIC_TRAMPOLINES: name = "section\t__IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5"; break;
case GAS_SECTION_PIC_SYMBOLS: name = "section\t__IMPORT,__pointers,non_lazy_symbol_pointers"; break;
case GAS_SECTION_CSTRING: name = "cstring"; break;
+ case GAS_SECTION_DEBUG_INFO: name = "section __DWARF,__debug_info,regular,debug"; break;
+ case GAS_SECTION_DEBUG_ABBREV: name = "section __DWARF,__debug_abbrev,regular,debug"; break;
+ case GAS_SECTION_DEBUG_LINE: name = "section __DWARF,__debug_line,regular,debug"; break;
+ case GAS_SECTION_DEBUG_PUBNAMES: name = "section __DWARF,__debug_pubnames,regular,debug"; break;
default: panic("unsupported scetion type 0x%X", section);
}
be_emit_irprintf("\t.%s\n", name);
{
be_gas_section_t base = section & GAS_SECTION_TYPE_MASK;
be_gas_section_t flags = section & ~GAS_SECTION_TYPE_MASK;
- static const char *const basename[] = {
- "text", "data", "rodata", "bss", "ctors", "dtors"
+ static const char *const basename[GAS_SECTION_LAST+1] = {
+ "text",
+ "data",
+ "rodata",
+ "bss",
+ "ctors",
+ "dtors",
+ NULL, /* cstring */
+ NULL, /* pic trampolines */
+ NULL, /* pic symbols */
+ "debug_info",
+ "debug_abbrev",
+ "debug_line",
+ "debug_pubnames"
};
if (current_section == section && !(section & GAS_SECTION_FLAG_COMDAT))
{
be_gas_section_t base = section & GAS_SECTION_TYPE_MASK;
be_gas_section_t flags = section & ~GAS_SECTION_TYPE_MASK;
- static const char *const basename[] = {
- "text", "data", "rodata", "bss", "ctors", "dtors"
- };
- static const char *const type[] = {
- "progbits", "progbits", "progbits", "nobits", "init_array", "fini_array"
+ const char *f;
+ static const struct {
+ const char *name;
+ const char *type;
+ const char *flags;
+ } sectioninfos[GAS_SECTION_LAST+1] = {
+ { "text", "progbits", "ax" },
+ { "data", "progbits", "aw" },
+ { "rodata", "progbits", "a" },
+ { "bss", "nobits", "aw" },
+ { "ctors", "progbits", "aw" },
+ { "dtors", "progbits", "aw" },
+ { NULL, NULL, NULL }, /* cstring */
+ { NULL, NULL, NULL }, /* pic trampolines */
+ { NULL, NULL, NULL }, /* pic symbols */
+ { "debug_info", "progbits", "" },
+ { "debug_abbrev", "progbits", "" },
+ { "debug_line", "progbits", "" },
+ { "debug_pubnames", "progbits", "" },
};
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O) {
emit_section_macho(section);
return;
- } else if(be_gas_object_file_format == OBJECT_FILE_FORMAT_ELF_SPARC) {
+ } else if(be_gas_elf_variant == ELF_VARIANT_SPARC) {
emit_section_sparc(section, entity);
return;
}
}
}
- assert(base < (be_gas_section_t) ARRAY_SIZE(basename));
+ assert(base < (be_gas_section_t) ARRAY_SIZE(sectioninfos));
be_emit_cstring("\t.section\t.");
/* section name */
if (flags & GAS_SECTION_FLAG_TLS)
be_emit_char('t');
- be_emit_string(basename[base]);
+ be_emit_string(sectioninfos[base].name);
if (flags & GAS_SECTION_FLAG_COMDAT) {
be_emit_char('.');
be_gas_emit_entity(entity);
/* section flags */
be_emit_cstring(",\"");
- if (be_gas_object_file_format != OBJECT_FILE_FORMAT_COFF)
- be_emit_char('a');
- if (base == GAS_SECTION_TEXT)
- be_emit_char('x');
- if (base != GAS_SECTION_RODATA && base != GAS_SECTION_TEXT)
- be_emit_char('w');
+ for (f = sectioninfos[base].flags; *f != '\0'; ++f) {
+ be_emit_char(*f);
+ }
if (flags & GAS_SECTION_FLAG_TLS)
be_emit_char('T');
if (flags & GAS_SECTION_FLAG_COMDAT)
be_emit_char('G');
+
/* section type */
if (be_gas_object_file_format != OBJECT_FILE_FORMAT_COFF) {
be_emit_cstring("\",");
be_emit_char(be_gas_elf_type_char);
- be_emit_string(type[base]);
+ be_emit_string(sectioninfos[base].type);
}
if (flags & GAS_SECTION_FLAG_COMDAT) {
void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment)
{
- be_gas_section_t section = determine_section(NULL, entity);
+ be_gas_section_t section;
+
+ be_dbg_method_begin(entity);
+
+ section = determine_section(NULL, entity);
emit_section(section, entity);
/* write the begin line (makes the life easier for scripts parsing the
switch (be_gas_object_file_format) {
case OBJECT_FILE_FORMAT_ELF:
- case OBJECT_FILE_FORMAT_ELF_SPARC:
be_emit_cstring("\t.type\t");
be_gas_emit_entity(entity);
be_emit_cstring(", ");
be_gas_emit_entity(entity);
be_emit_char('\n');
be_emit_write_line();
+
+ be_dbg_method_end();
+
+ be_emit_char('\n');
+ be_emit_write_line();
}
/**
* @param tv the tarval
* @param bytes the width of the tarvals value in bytes
*/
-static void emit_arith_tarval(ir_tarval *tv, int bytes)
+static void emit_arith_tarval(ir_tarval *tv, unsigned bytes)
{
switch (bytes) {
case 1:
return;
case 2:
- be_emit_irprintf("0x%02x%02x", get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
+ be_emit_irprintf("0x%02x%02x",
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
return;
case 4:
be_emit_irprintf("0x%02x%02x%02x%02x",
- get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
+ get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
return;
case 8:
be_emit_irprintf("0x%02x%02x%02x%02x%02x%02x%02x%02x",
- get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
- get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
- return;
-
- case 12:
- /* Beware: Mixed endian output! One little endian number emitted as
- * three longs. Each long initializer is written in big endian. */
- be_emit_irprintf(
- "\t.long\t0x%02x%02x%02x%02x\n"
- "\t.long\t0x%02x%02x%02x%02x\n"
- "\t.long\t0x%02x%02x%02x%02x",
- get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
- get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0),
- get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
- get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
- get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10),
- get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8)
- );
- return;
-
- case 16:
- /* Beware: Mixed endian output! One little endian number emitted as
- * three longs. Each long initializer is written in big endian. */
- be_emit_irprintf(
- "\t.long\t0x%02x%02x%02x%02x\n"
- "\t.long\t0x%02x%02x%02x%02x\n"
- "\t.long\t0x%02x%02x%02x%02x\n"
- "\t.long\t0x%02x%02x%02x%02x",
- get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
- get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0),
- get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
- get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
- get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10),
- get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8),
- get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14),
- get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12)
- );
+ get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
+ get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
+ get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
return;
}
* @param env the gas output environment
* @param init a node representing the atomic value (on the const code irg)
*/
-static void do_emit_atomic_init(be_gas_decl_env_t *env, ir_node *init)
+static void emit_init_expression(be_gas_decl_env_t *env, ir_node *init)
{
ir_mode *mode = get_irn_mode(init);
int bytes = get_mode_size_bytes(mode);
switch (get_irn_opcode(init)) {
case iro_Cast:
- do_emit_atomic_init(env, get_Cast_op(init));
+ emit_init_expression(env, get_Cast_op(init));
return;
case iro_Conv:
- do_emit_atomic_init(env, get_Conv_op(init));
+ emit_init_expression(env, get_Conv_op(init));
return;
case iro_Const:
tv = get_Const_tarval(init);
- /* it's a arithmetic value */
+ /* it's an arithmetic value */
emit_arith_tarval(tv, bytes);
return;
if (!mode_is_int(mode) && !mode_is_reference(mode)) {
panic("Constant must be int or pointer for '+' to work");
}
- do_emit_atomic_init(env, get_Add_left(init));
+ emit_init_expression(env, get_Add_left(init));
be_emit_cstring(" + ");
- do_emit_atomic_init(env, get_Add_right(init));
+ emit_init_expression(env, get_Add_right(init));
return;
case iro_Sub:
if (!mode_is_int(mode) && !mode_is_reference(mode)) {
panic("Constant must be int or pointer for '-' to work");
}
- do_emit_atomic_init(env, get_Sub_left(init));
+ emit_init_expression(env, get_Sub_left(init));
be_emit_cstring(" - ");
- do_emit_atomic_init(env, get_Sub_right(init));
+ emit_init_expression(env, get_Sub_right(init));
return;
case iro_Mul:
if (!mode_is_int(mode) && !mode_is_reference(mode)) {
panic("Constant must be int or pointer for '*' to work");
}
- do_emit_atomic_init(env, get_Mul_left(init));
+ emit_init_expression(env, get_Mul_left(init));
be_emit_cstring(" * ");
- do_emit_atomic_init(env, get_Mul_right(init));
+ emit_init_expression(env, get_Mul_right(init));
return;
case iro_Unknown:
static void emit_size_type(size_t size)
{
switch (size) {
- case 1:
- be_emit_cstring("\t.byte\t");
- break;
-
- case 2:
- be_emit_cstring("\t.short\t");
- break;
-
- case 4:
- be_emit_cstring("\t.long\t");
- break;
-
- case 8:
- be_emit_cstring("\t.quad\t");
- break;
-
- case 10:
- case 12:
- case 16: /* Note: .octa does not work on mac */
- /* handled in arith */
- break;
+ case 1: be_emit_cstring("\t.byte\t"); break;
+ case 2: be_emit_cstring("\t.short\t"); break;
+ case 4: be_emit_cstring("\t.long\t"); break;
+ case 8: be_emit_cstring("\t.quad\t"); break;
default:
panic("Try to dump a type with %u bytes", (unsigned)size);
}
}
-/**
- * Emit an atomic value.
- *
- * @param env the gas output environment
- * @param init a node representing the atomic value (on the const code irg)
- */
-static void emit_atomic_init(be_gas_decl_env_t *env, ir_node *init)
-{
- ir_mode *mode = get_irn_mode(init);
- int bytes = get_mode_size_bytes(mode);
-
- emit_size_type(bytes);
- do_emit_atomic_init(env, init);
- be_emit_char('\n');
- be_emit_write_line();
-}
-
/**
* Dump a string constant.
* No checks are made!!
if (isprint(c))
be_emit_char(c);
else
- be_emit_irprintf("\\%o", c);
+ be_emit_irprintf("\\%03o", c);
break;
}
}
if (isprint(c))
be_emit_char(c);
else
- be_emit_irprintf("\\%o", c);
+ be_emit_irprintf("\\%03o", c);
break;
}
}
typedef struct {
normal_or_bitfield_kind kind;
+ ir_type *type;
union {
ir_node *value;
ir_tarval *tarval;
assert(vals->kind != BITFIELD);
vals->kind = TARVAL;
+ vals->type = type;
vals->v.tarval = get_initializer_tarval_value(initializer);
assert(get_type_mode(type) == get_tarval_mode(vals->v.tarval));
for (i = 1; i < get_type_size_bytes(type); ++i) {
vals[i].kind = NORMAL;
+ vals[i].type = NULL;
vals[i].v.value = NULL;
}
return;
assert(vals->kind != BITFIELD);
vals->kind = NORMAL;
+ vals->type = type;
vals->v.value = get_initializer_const_value(initializer);
for (i = 1; i < get_type_size_bytes(type); ++i) {
vals[i].kind = NORMAL;
+ vals[i].type = NULL;
vals[i].v.value = 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);
}
}
panic("invalid ir_initializer kind found");
}
+static void emit_tarval_data(ir_type *type, ir_tarval *tv)
+{
+ size_t size = get_type_size_bytes(type);
+ if (size == 12) {
+ /* this should be an x86 extended float */
+ assert(be_get_backend_param()->byte_order_big_endian == 0);
+
+ /* Beware: Mixed endian output! One little endian number emitted as
+ * three longs. Each long initializer is written in big endian. */
+ be_emit_irprintf(
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n",
+ get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0),
+ get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
+ get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
+ get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10),
+ get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8)
+ );
+ be_emit_write_line();
+ } else if (size == 16) {
+ if (be_get_backend_param()->byte_order_big_endian) {
+ be_emit_irprintf(
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n",
+ get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14),
+ get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12),
+ get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10),
+ get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8),
+ get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
+ get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
+ get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)
+ );
+ } else {
+ /* Beware: Mixed endian output! One little endian number emitted as
+ * three longs. Each long initializer is written in big endian. */
+ be_emit_irprintf(
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n"
+ "\t.long\t0x%02x%02x%02x%02x\n",
+ get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2),
+ get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0),
+ get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6),
+ get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4),
+ get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10),
+ get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8),
+ get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14),
+ get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12)
+ );
+ }
+ be_emit_write_line();
+ return;
+ } else {
+ /* default case */
+ emit_size_type(size);
+ emit_arith_tarval(tv, size);
+ be_emit_char('\n');
+ be_emit_write_line();
+ }
+}
+
+/**
+ * Emit an atomic value.
+ *
+ * @param env the gas output environment
+ * @param init a node representing the atomic value (on the const code irg)
+ */
+static void emit_node_data(be_gas_decl_env_t *env, ir_node *init, ir_type *type)
+{
+ size_t size = get_type_size_bytes(type);
+ if (size == 12 || size == 16) {
+ ir_tarval *tv;
+ if (!is_Const(init)) {
+ panic("12/16byte initializers only support Const nodes yet");
+ }
+ tv = get_Const_tarval(init);
+ emit_tarval_data(type, tv);
+ return;
+ }
+
+ emit_size_type(size);
+ emit_init_expression(env, init);
+ be_emit_char('\n');
+ be_emit_write_line();
+}
+
static void emit_initializer(be_gas_decl_env_t *env, const ir_entity *entity)
{
const ir_initializer_t *initializer = entity->initializer;
/* now write values sorted */
for (k = 0; k < size; ) {
int space = 0;
- int elem_size = 1;
normal_or_bitfield_kind kind = vals[k].kind;
+ int elem_size;
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));
+ emit_node_data(env, vals[k].v.value, vals[k].type);
+ elem_size = get_type_size_bytes(vals[k].type);
} else {
elem_size = 0;
}
break;
- case TARVAL: {
- ir_tarval *tv = vals[k].v.tarval;
- size_t size = get_mode_size_bytes(get_tarval_mode(tv));
-
- assert(tv != NULL);
-
- elem_size = size;
- emit_size_type(size);
- emit_arith_tarval(tv, size);
- be_emit_char('\n');
- be_emit_write_line();
+ case TARVAL:
+ emit_tarval_data(vals[k].type, vals[k].v.tarval);
+ elem_size = get_type_size_bytes(vals[k].type);
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();
+ elem_size = 1;
break;
+ default:
+ panic("internal compiler error (invalid normal_or_bitfield_kind");
}
k += elem_size;
int space = 0, skip = 0;
if (vals[k].kind == NORMAL) {
if (vals[k].v.value != NULL) {
- emit_atomic_init(env, vals[k].v.value);
+ emit_node_data(env, vals[k].v.value, vals[k].type);
skip = get_mode_size_bytes(get_irn_mode(vals[k].v.value)) - 1;
} else {
space = 1;
be_emit_write_line();
return;
case OBJECT_FILE_FORMAT_ELF:
- case OBJECT_FILE_FORMAT_ELF_SPARC:
be_emit_cstring("\t.comm ");
be_gas_emit_entity(entity);
be_emit_irprintf(",%u,%u\n", size, alignment);
be_emit_write_line();
return;
case OBJECT_FILE_FORMAT_ELF:
- case OBJECT_FILE_FORMAT_ELF_SPARC:
be_emit_cstring("\t.local ");
be_gas_emit_entity(entity);
be_emit_cstring("\n");
void be_gas_emit_block_name(const ir_node *block)
{
- if (has_Block_entity(block)) {
+ if (get_Block_entity(block) != NULL) {
ir_entity *entity = get_Block_entity(block);
be_gas_emit_entity(entity);
} else {
}
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 {
}
/* Generate all entities. */
-void be_gas_emit_decls(const be_main_env_t *main_env)
+static void emit_global_decls(const be_main_env_t *main_env)
{
be_gas_decl_env_t env;
memset(&env, 0, sizeof(env));
be_emit_write_line();
}
}
+
+void be_emit_jump_table(const ir_node *node, const ir_switch_table *table,
+ ir_entity *entity, get_cfop_target_func get_cfop_target)
+{
+ unsigned n_outs = arch_get_irn_n_outs(node);
+ const ir_node **targets = XMALLOCNZ(const ir_node*, n_outs);
+ size_t n_entries = ir_switch_table_get_n_entries(table);
+ unsigned long length = 0;
+ size_t e;
+ const ir_edge_t *edge;
+ unsigned i;
+ const ir_node **labels;
+
+ /* go over all proj's and collect their jump targets */
+ foreach_out_edge(node, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
+ long pn = get_Proj_proj(proj);
+ ir_node *target = get_cfop_target(proj);
+ assert(targets[pn] == NULL);
+ targets[pn] = target;
+ }
+
+ /* go over table to determine max value (note that we normalized the
+ * ranges so that the minimum is 0) */
+ for (e = 0; e < n_entries; ++e) {
+ const ir_switch_table_entry *entry
+ = ir_switch_table_get_entry_const(table, e);
+ ir_tarval *max = entry->max;
+ unsigned long val;
+ if (entry->pn == 0)
+ continue;
+ if (!tarval_is_long(max))
+ panic("switch case overflow (%+F)", node);
+ val = (unsigned long) get_tarval_long(max);
+ if (val > length) {
+ length = val;
+ }
+ }
+
+ /* 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 (%+F)", node);
+ }
+ ++length;
+
+ labels = XMALLOCNZ(const ir_node*, length);
+ for (e = 0; e < n_entries; ++e) {
+ const ir_switch_table_entry *entry
+ = ir_switch_table_get_entry_const(table, e);
+ ir_tarval *min = entry->min;
+ ir_tarval *max = entry->max;
+ const ir_node *target = targets[entry->pn];
+ assert(entry->pn < (long)n_outs);
+ if (min == max) {
+ unsigned long val = (unsigned long)get_tarval_long(max);
+ labels[val] = target;
+ } else {
+ unsigned long min_val;
+ unsigned long max_val;
+ unsigned long i;
+ if (!tarval_is_long(min))
+ panic("switch case overflow (%+F)", node);
+ min_val = (unsigned long)get_tarval_long(min);
+ max_val = (unsigned long)get_tarval_long(max);
+ assert(min_val <= max_val);
+ for (i = min_val; i <= max_val; ++i) {
+ labels[i] = target;
+ }
+ }
+ }
+
+ /* emit table */
+ if (entity != NULL) {
+ 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) {
+ const ir_node *block = labels[i];
+ if (block == NULL)
+ block = targets[0];
+ be_emit_cstring("\t.long ");
+ be_gas_emit_block_name(block);
+ be_emit_char('\n');
+ be_emit_write_line();
+ }
+
+ if (entity != NULL)
+ be_gas_emit_switch_section(GAS_SECTION_TEXT);
+
+ xfree(labels);
+ xfree(targets);
+}
+
+static void emit_global_asms(void)
+{
+ size_t n = get_irp_n_asms();
+ size_t i;
+
+ be_gas_emit_switch_section(GAS_SECTION_TEXT);
+ for (i = 0; i < n; ++i) {
+ ident *asmtext = get_irp_asm(i);
+
+ be_emit_cstring("#APP\n");
+ be_emit_write_line();
+ be_emit_ident(asmtext);
+ be_emit_char('\n');
+ be_emit_write_line();
+ be_emit_cstring("#NO_APP\n");
+ be_emit_write_line();
+ }
+}
+
+void be_gas_begin_compilation_unit(const be_main_env_t *env)
+{
+ be_dbg_open();
+ be_dbg_unit_begin(env->cup_name);
+ be_dbg_types();
+
+ emit_global_asms();
+}
+
+void be_gas_end_compilation_unit(const be_main_env_t *env)
+{
+ emit_global_decls(env);
+
+ be_dbg_unit_end();
+ be_dbg_close();
+}
projects / libfirm / blobdiff