* @brief Dumps global variables and constants as gas assembler.
* @author Christian Wuerdig, Matthias Braun
* @date 04.11.2005
- * @version $Id$
*/
#include "config.h"
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", "progbits", "progbits"
+ 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) {
}
}
- 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
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();
}
/**
void be_gas_emit_entity(const ir_entity *entity)
{
- if (entity->type == firm_code_type) {
+ if (entity->type == get_code_type()) {
ir_label_t label = get_entity_label(entity);
be_emit_irprintf("%s_%lu", be_gas_get_private_prefix(), label);
return;
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 {
ir_linkage linkage = get_entity_linkage(entity);
/* block labels are already emittet in the code */
- if (type == firm_code_type)
+ if (type == get_code_type())
return;
/* we already emitted all methods. Except for the trampolines which
}
/* 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));
}
}
-void emit_jump_table(const ir_node *node, long default_pn, ir_entity *entity,
- get_cfop_target_func get_cfop_target)
+void be_emit_jump_table(const ir_node *node, const ir_switch_table *table,
+ 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 */
+ 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);
-
- /* 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;
+ 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;
}
}
- 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");
+ 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;
+ }
+ }
}
- 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 */
+ 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");
}
- /* 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];
+ const ir_node *block = labels[i];
if (block == NULL)
- block = default_block;
+ 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);
- xfree(table);
+ be_dbg_unit_end();
+ be_dbg_close();
}