/*
- * 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.
*
* @brief Dumps global variables and constants as gas assembler.
* @author Christian Wuerdig, Matthias Braun
* @date 04.11.2005
- * @version $Id$
*/
#include "config.h"
#include "entity_t.h"
#include "error.h"
#include "util.h"
+#include "execfreq.h"
#include "be_t.h"
+#include "bearch.h"
#include "beemitter.h"
-#include "be_dbgout.h"
+#include "bedwarf.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 = '@';
static be_gas_section_t current_section = (be_gas_section_t) -1;
+static pmap *block_numbers;
+static unsigned next_block_nr;
/**
* An environment containing all needed dumper data.
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;
+ case GAS_SECTION_DEBUG_FRAME: name = "section __DWARF,__debug_frame,regular,debug"; break;
default: panic("unsupported scetion type 0x%X", section);
}
- be_emit_irprintf("\t.%s\n", name);
- be_emit_write_line();
} else if (flags & GAS_SECTION_FLAG_COMDAT) {
switch (base) {
case GAS_SECTION_TEXT: name = "section __TEXT,__textcoal_nt,coalesced,pure_instructions"; break;
case GAS_SECTION_CSTRING: name = "section __TEXT,__const_coal,coalesced"; break;
default: panic("unsupported scetion type 0x%X", section);
}
+ } else if (flags & GAS_SECTION_FLAG_TLS) {
+ panic("thread local storage not supported on macho (section 0x%X)", section);
} else {
- panic("unsupported section type 0x%X\n", section);
+ panic("unsupported section type 0x%X", section);
}
+ be_emit_irprintf("\t.%s\n", name);
+ be_emit_write_line();
}
static void emit_section_sparc(be_gas_section_t section, const ir_entity *entity)
{
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"
+ "debug_frame",
};
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", "" },
+ { "debug_frame", "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) {
{
ir_type *type, *element_type;
ir_mode *mode;
- int i, c, n;
type = get_entity_type(ent);
if (ent->initializer != NULL) {
return initializer_is_string_const(ent->initializer);
- } else if (entity_has_compound_ent_values(ent)) {
- int found_printable = 0;
- /* if it contains only printable chars and a 0 at the end */
- n = get_compound_ent_n_values(ent);
- for (i = 0; i < n; ++i) {
- ir_node *irn = get_compound_ent_value(ent, i);
- if (! is_Const(irn))
- return 0;
-
- c = (int) get_tarval_long(get_Const_tarval(irn));
-
- if (isgraph(c) || isspace(c))
- found_printable = 1;
- else if (c != 0)
- return 0;
-
- if (i == n - 1 && c != '\0')
- return 0;
- }
- return found_printable;
}
return 0;
static bool entity_is_null(const ir_entity *entity)
{
- if (entity->initializer != NULL) {
- return initializer_is_null(entity->initializer);
- } else if (entity_has_compound_ent_values(entity)) {
- /* I'm too lazy to implement this case as compound graph paths will be
- * remove anyway in the future */
- return false;
- }
- /* uninitialized, NULL is fine */
- return true;
+ ir_initializer_t *initializer = get_entity_initializer(entity);
+ return initializer == NULL || initializer_is_null(initializer);
}
static bool is_comdat(const ir_entity *entity)
if (linkage & IR_LINKAGE_CONSTANT) {
/* mach-o is the only one with a cstring section */
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O
- && entity_is_string_const(entity))
+ && entity_is_string_const(entity))
return GAS_SECTION_CSTRING;
return GAS_SECTION_RODATA;
static void emit_visibility(const ir_entity *entity)
{
- ir_linkage linkage = get_entity_linkage(entity);
+ ir_linkage const linkage = get_entity_linkage(entity);
- if (get_entity_linkage(entity) & IR_LINKAGE_WEAK) {
+ if (linkage & IR_LINKAGE_WEAK) {
emit_weak(entity);
/* Note: .weak seems to imply .globl so no need to output .globl */
- } else if (get_entity_visibility(entity) == ir_visibility_default) {
- be_emit_cstring(".globl ");
+ } else if (get_entity_visibility(entity) == ir_visibility_external
+ && entity_has_definition(entity)) {
+ be_emit_cstring("\t.globl ");
be_gas_emit_entity(entity);
be_emit_char('\n');
be_emit_write_line();
}
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');
}
}
-void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment)
+void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment, const parameter_dbg_info_t *parameter_infos)
{
- be_gas_section_t section = determine_section(NULL, entity);
+ be_gas_section_t section;
+
+ be_dwarf_method_before(entity, parameter_infos);
+
+ section = determine_section(NULL, entity);
emit_section(section, entity);
/* write the begin line (makes the life easier for scripts parsing the
* assembler) */
- be_emit_write_line();
- be_emit_cstring("# -- Begin ");
- be_gas_emit_entity(entity);
- be_emit_char('\n');
- be_emit_write_line();
+ if (be_options.verbose_asm) {
+ be_emit_cstring("# -- Begin ");
+ be_gas_emit_entity(entity);
+ be_emit_char('\n');
+ be_emit_write_line();
+ }
if (po2alignment > 0) {
const char *fill_byte = "";
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_cstring(":\n");
be_emit_write_line();
+
+ be_dwarf_method_begin();
}
void be_gas_emit_function_epilog(const ir_entity *entity)
{
+ be_dwarf_method_end();
+
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_ELF) {
be_emit_cstring("\t.size\t");
be_gas_emit_entity(entity);
be_emit_write_line();
}
- be_emit_cstring("# -- End ");
- be_gas_emit_entity(entity);
+ if (be_options.verbose_asm) {
+ be_emit_cstring("# -- End ");
+ be_gas_emit_entity(entity);
+ be_emit_char('\n');
+ be_emit_write_line();
+ }
+
be_emit_char('\n');
be_emit_write_line();
+
+ next_block_nr += 199;
+ next_block_nr -= next_block_nr % 100;
}
/**
* @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;
}
return ".LE";
}
-/**
- * Return the tarval of an atomic initializer.
- *
- * @param init a node representing the initializer (on the const code irg)
- *
- * @return the tarval
- */
-static ir_tarval *get_atomic_init_tv(ir_node *init)
-{
- for (;;) {
- ir_mode *mode = get_irn_mode(init);
-
- switch (get_irn_opcode(init)) {
-
- case iro_Cast:
- init = get_Cast_op(init);
- continue;
-
- case iro_Conv:
- init = get_Conv_op(init);
- continue;
-
- case iro_Const:
- return get_Const_tarval(init);
-
- case iro_SymConst:
- switch (get_SymConst_kind(init)) {
- case symconst_type_size:
- return new_tarval_from_long(get_type_size_bytes(get_SymConst_type(init)), mode);
-
- case symconst_type_align:
- return new_tarval_from_long(get_type_alignment_bytes(get_SymConst_type(init)), mode);
-
- case symconst_ofs_ent:
- return new_tarval_from_long(get_entity_offset(get_SymConst_entity(init)), mode);
-
- case symconst_enum_const:
- return get_enumeration_value(get_SymConst_enum(init));
-
- default:
- return NULL;
- }
-
- default:
- return NULL;
- }
- }
-}
-
/**
* Dump an atomic value.
*
* @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:
return;
default:
- panic("emit_atomic_init(): unsupported IR-node %+F", init);
+ panic("unsupported IR-node %+F", init);
}
}
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)
+static void emit_string_char(int c)
{
- 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!!
- *
- * @param ent The entity to dump.
- */
-static void emit_string_cst(const ir_entity *ent)
-{
- int i, len;
- int output_len;
- ir_type *type;
- int type_size;
- int remaining_space;
-
- len = get_compound_ent_n_values(ent);
- output_len = len;
- if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O) {
- be_emit_cstring("\t.ascii \"");
- } else {
- be_emit_cstring("\t.string \"");
- output_len -= 1;
- }
-
- for (i = 0; i < output_len; ++i) {
- ir_node *irn;
- int c;
-
- irn = get_compound_ent_value(ent, i);
- c = (int) get_tarval_long(get_Const_tarval(irn));
-
- switch (c) {
- case '"' : be_emit_cstring("\\\""); break;
- case '\n': be_emit_cstring("\\n"); break;
- case '\r': be_emit_cstring("\\r"); break;
- case '\t': be_emit_cstring("\\t"); break;
- case '\\': be_emit_cstring("\\\\"); break;
- default :
- if (isprint(c))
- be_emit_char(c);
- else
- be_emit_irprintf("\\%o", c);
- break;
- }
- }
- be_emit_cstring("\"\n");
- be_emit_write_line();
-
- type = get_entity_type(ent);
- type_size = get_type_size_bytes(type);
- remaining_space = type_size - len;
- assert(remaining_space >= 0);
- if (remaining_space > 0) {
- be_emit_irprintf("\t.space\t%d, 0\n", remaining_space);
+ switch (c) {
+ case '"' : be_emit_cstring("\\\""); break;
+ case '\n': be_emit_cstring("\\n"); break;
+ case '\r': be_emit_cstring("\\r"); break;
+ case '\t': be_emit_cstring("\\t"); break;
+ case '\\': be_emit_cstring("\\\\"); break;
+ default :
+ if (isprint(c))
+ be_emit_char(c);
+ else
+ be_emit_irprintf("\\%03o", c);
+ break;
}
}
static size_t emit_string_initializer(const ir_initializer_t *initializer)
{
- size_t i, len;
-
- len = initializer->compound.n_initializers;
- if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O) {
- be_emit_cstring("\t.ascii \"");
- } else {
- be_emit_cstring("\t.string \"");
- len -= 1;
- }
+ be_emit_cstring("\t.asciz \"");
- for (i = 0; i < len; ++i) {
+ size_t len = initializer->compound.n_initializers;
+ for (size_t i = 0; i < len-1; ++i) {
const ir_initializer_t *sub_initializer
= get_initializer_compound_value(initializer, i);
ir_tarval *tv = get_initializer_tarval(sub_initializer);
int c = get_tarval_long(tv);
-
- switch (c) {
- case '"' : be_emit_cstring("\\\""); break;
- case '\n': be_emit_cstring("\\n"); break;
- case '\r': be_emit_cstring("\\r"); break;
- case '\t': be_emit_cstring("\\t"); break;
- case '\\': be_emit_cstring("\\\\"); break;
- default :
- if (isprint(c))
- be_emit_char(c);
- else
- be_emit_irprintf("\\%o", c);
- break;
- }
+ emit_string_char(c);
}
be_emit_cstring("\"\n");
be_emit_write_line();
return initializer->compound.n_initializers;
}
+void be_gas_emit_cstring(const char *string)
+{
+ be_emit_cstring("\t.asciz \"");
+ for (const char *c = string; *c != '\0'; ++c) {
+ emit_string_char(*c);
+ }
+ be_emit_cstring("\"\n");
+ be_emit_write_line();
+}
+
typedef enum normal_or_bitfield_kind {
NORMAL = 0,
TARVAL,
typedef struct {
normal_or_bitfield_kind kind;
+ ir_type *type;
union {
ir_node *value;
ir_tarval *tarval;
} v;
} normal_or_bitfield;
-static int is_type_variable_size(ir_type *type)
-{
- (void) type;
- /* TODO */
- return 0;
-}
-
static size_t get_initializer_size(const ir_initializer_t *initializer,
ir_type *type)
{
case IR_INITIALIZER_NULL:
return get_type_size_bytes(type);
case IR_INITIALIZER_COMPOUND:
- if (!is_type_variable_size(type)) {
- return get_type_size_bytes(type);
+ if (is_Array_type(type)) {
+ if (is_array_variable_size(type)) {
+ ir_type *element_type = get_array_element_type(type);
+ unsigned element_size = get_type_size_bytes(element_type);
+ unsigned element_align
+ = get_type_alignment_bytes(element_type);
+ unsigned misalign = element_size % element_align;
+ size_t n_inits
+ = get_initializer_compound_n_entries(initializer);
+ element_size += element_align - misalign;
+ return n_inits * element_size;
+ } else {
+ return get_type_size_bytes(type);
+ }
} else {
- unsigned n_entries
- = get_initializer_compound_n_entries(initializer);
- unsigned i;
- unsigned initializer_size = get_type_size_bytes(type);
- for (i = 0; i < n_entries; ++i) {
- ir_entity *entity = get_compound_member(type, i);
- ir_type *type = get_entity_type(entity);
-
- const ir_initializer_t *sub_initializer
- = get_initializer_compound_value(initializer, i);
-
- unsigned offset = get_entity_offset(entity);
- unsigned size = get_initializer_size(sub_initializer, type);
-
- if (offset + size > initializer_size) {
- initializer_size = offset + size;
- }
+ assert(is_compound_type(type));
+ size_t size = get_type_size_bytes(type);
+ if (is_compound_variable_size(type)) {
+ /* last initializer has to be an array of variable size */
+ size_t l = get_initializer_compound_n_entries(initializer)-1;
+ const ir_initializer_t *last
+ = get_initializer_compound_value(initializer, l);
+ const ir_entity *last_ent = get_compound_member(type, l);
+ ir_type *last_type = get_entity_type(last_ent);
+ assert(is_array_variable_size(last_type));
+ size += get_initializer_size(last, last_type);
}
- return initializer_size;
+ return size;
}
}
const ir_initializer_t *initializer,
ir_type *type)
{
- assert((size_t) (vals - glob_vals) < max_vals);
+ assert((size_t) (vals - glob_vals) <= max_vals);
if (initializer_is_string_const(initializer)) {
assert(vals->kind != BITFIELD);
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;
xfree(vals);
}
-static void emit_compound_graph_init(be_gas_decl_env_t *env,
- const ir_entity *ent)
-{
- normal_or_bitfield *vals;
- int i, j, n;
- unsigned k, last_ofs;
-
- if (entity_is_string_const(ent)) {
- emit_string_cst(ent);
- return;
- }
-
- n = get_compound_ent_n_values(ent);
-
- /* Find the initializer size. Sorrily gcc support a nasty feature:
- The last field of a compound may be a flexible array. This allows
- initializers bigger than the type size. */
- last_ofs = get_type_size_bytes(get_entity_type(ent));
- for (i = 0; i < n; ++i) {
- unsigned offset = get_compound_ent_value_offset_bytes(ent, i);
- unsigned bits_remainder = get_compound_ent_value_offset_bit_remainder(ent, i);
- ir_node *value = get_compound_ent_value(ent, i);
- unsigned value_len = get_mode_size_bits(get_irn_mode(value));
-
- offset += (value_len + bits_remainder + 7) >> 3;
-
- if (offset > last_ofs) {
- last_ofs = offset;
- }
- }
-
- /*
- * In the worst case, every initializer allocates one byte.
- * Moreover, initializer might be big, do not allocate on stack.
- */
- vals = XMALLOCNZ(normal_or_bitfield, last_ofs);
-
- /* collect the values and store them at the offsets */
- for (i = 0; i < n; ++i) {
- unsigned offset = get_compound_ent_value_offset_bytes(ent, i);
- int offset_bits = get_compound_ent_value_offset_bit_remainder(ent, i);
- ir_node *value = get_compound_ent_value(ent, i);
- int value_len = get_mode_size_bits(get_irn_mode(value));
-
- assert(offset_bits >= 0);
-
- if (offset_bits != 0 ||
- (value_len != 8 && value_len != 16 && value_len != 32 && value_len != 64)) {
- ir_tarval *tv = get_atomic_init_tv(value);
- unsigned char curr_bits, last_bits = 0;
- if (tv == NULL) {
- panic("Couldn't get numeric value for bitfield initializer '%s'",
- get_entity_ld_name(ent));
- }
- /* normalize offset */
- offset += offset_bits >> 3;
- offset_bits &= 7;
-
- for (j = 0; value_len + offset_bits > 0; ++j) {
- assert(offset + j < last_ofs);
- assert(vals[offset + j].kind == BITFIELD || vals[offset + j].v.value == NULL);
- vals[offset + j].kind = BITFIELD;
- curr_bits = get_tarval_sub_bits(tv, j);
- vals[offset + j].v.bf_val |= (last_bits >> (8 - offset_bits)) | (curr_bits << offset_bits);
- value_len -= 8;
- last_bits = curr_bits;
- }
- } else {
- int i;
-
- assert(offset < last_ofs);
- assert(vals[offset].kind == NORMAL);
- for (i = 1; i < value_len / 8; ++i) {
- assert(vals[offset + i].v.value == NULL);
- }
- vals[offset].v.value = value;
- }
- }
-
- /* now write them sorted */
- for (k = 0; k < last_ofs; ) {
- int space = 0, skip = 0;
- if (vals[k].kind == NORMAL) {
- if (vals[k].v.value != NULL) {
- emit_atomic_init(env, vals[k].v.value);
- skip = get_mode_size_bytes(get_irn_mode(vals[k].v.value)) - 1;
- } else {
- space = 1;
- }
- } else {
- assert(vals[k].kind == BITFIELD);
- be_emit_irprintf("\t.byte\t%d\n", vals[k].v.bf_val);
- }
-
- ++k;
- while (k < last_ofs && vals[k].kind == NORMAL && vals[k].v.value == NULL) {
- ++space;
- ++k;
- }
- space -= skip;
- assert(space >= 0);
-
- /* a gap */
- if (space > 0) {
- be_emit_irprintf("\t.space\t%d, 0\n", space);
- be_emit_write_line();
- }
- }
- xfree(vals);
-}
-
static void emit_align(unsigned p2alignment)
{
be_emit_irprintf("\t.p2align\t%u\n", log2_floor(p2alignment));
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");
be_gas_emit_entity(entity);
be_emit_cstring(":\n");
be_emit_write_line();
- be_emit_cstring("\t.indirect_symbol ");
- be_emit_ident(get_entity_ident(entity));
- be_emit_char('\n');
+ be_emit_irprintf("\t.indirect_symbol %I\n", get_entity_ident(entity));
be_emit_write_line();
if (section == GAS_SECTION_PIC_TRAMPOLINES) {
be_emit_cstring("\thlt ; hlt ; hlt ; hlt ; hlt\n");
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;
if (get_entity_visibility(entity) == ir_visibility_private) {
be_emit_string(be_gas_get_private_prefix());
}
- be_emit_ident(get_entity_ld_ident(entity));
+ be_emit_irprintf("%I", get_entity_ld_ident(entity));
}
void be_gas_emit_block_name(const ir_node *block)
{
- if (has_Block_entity(block)) {
- ir_entity *entity = get_Block_entity(block);
+ ir_entity *entity = get_Block_entity(block);
+ if (entity != NULL) {
be_gas_emit_entity(entity);
} else {
- be_emit_irprintf("%s%ld", be_gas_get_private_prefix(), get_irn_node_nr(block));
+ void *nr_val = pmap_get(void, block_numbers, block);
+ int nr;
+ if (nr_val == NULL) {
+ nr = next_block_nr++;
+ pmap_insert(block_numbers, block, INT_TO_PTR(nr+1));
+ } else {
+ nr = PTR_TO_INT(nr_val)-1;
+ }
+ be_emit_irprintf("%s%d", be_gas_get_private_prefix(), nr);
}
}
+void be_gas_begin_block(const ir_node *block, bool needs_label)
+{
+ if (needs_label) {
+ be_gas_emit_block_name(block);
+ be_emit_char(':');
+ } else {
+ if (!be_options.verbose_asm)
+ return;
+ be_emit_cstring("/*");
+ be_gas_emit_block_name(block);
+ be_emit_cstring(":*/");
+ }
+
+ if (be_options.verbose_asm) {
+ be_emit_pad_comment();
+ be_emit_irprintf("/* %+F preds:", block);
+
+ int arity = get_irn_arity(block);
+ if (arity == 0) {
+ be_emit_cstring(" none");
+ } else {
+ int i;
+ for (i = 0; i < arity; ++i) {
+ ir_node *predblock = get_Block_cfgpred_block(block, i);
+ be_emit_char(' ');
+ be_gas_emit_block_name(predblock);
+ }
+ }
+ be_emit_irprintf(", freq: %.3f */", get_block_execfreq(block));
+ }
+ be_emit_char('\n');
+ be_emit_write_line();
+}
+
/**
* Dump a global entity.
*
ir_visibility visibility = get_entity_visibility(entity);
ir_linkage linkage = get_entity_linkage(entity);
- /* block labels are already emittet in the code */
- if (type == firm_code_type)
+ /* Block labels are already emitted in the code. */
+ if (type == get_code_type())
return;
- /* we already emitted all methods. Except for the trampolines which
- * the assembler/linker generates */
+ /* we already emitted all methods with graphs in other functions like
+ * be_gas_emit_function_prolog(). All others don't need to be emitted.
+ */
if (is_Method_type(type) && section != GAS_SECTION_PIC_TRAMPOLINES) {
- /* functions with graph are already emitted with
- * be_gas_emit_function_prolog */
- if (get_entity_irg(entity) == NULL) {
- emit_visibility(entity);
- }
return;
}
- be_dbg_variable(entity);
+ be_dwarf_variable(entity);
if (section == GAS_SECTION_BSS) {
switch (visibility) {
case ir_visibility_private:
emit_local_common(entity);
return;
- case ir_visibility_default:
+ case ir_visibility_external:
if (linkage & IR_LINKAGE_MERGE) {
emit_common(entity);
return;
}
break;
- case ir_visibility_external:
- if (linkage & IR_LINKAGE_MERGE)
- panic("merge link semantic not supported for extern entities");
- break;
}
}
emit_visibility(entity);
- if (visibility == ir_visibility_external) {
- /* nothing to do for externally defined values */
- return;
- }
if (!is_po2(alignment))
panic("alignment not a power of 2");
return;
}
+ /* nothing left to do without an initializer */
+ if (!entity_has_definition(entity))
+ return;
+
/* alignment */
if (alignment > 1) {
emit_align(alignment);
}
if (get_id_str(ld_ident)[0] != '\0') {
- be_gas_emit_entity(entity);
+ be_gas_emit_entity(entity);
be_emit_cstring(":\n");
be_emit_write_line();
}
if (entity_is_null(entity)) {
- 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);
+ /* we should use .space for stuff in the bss segment */
+ 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 {
assert(entity->initializer != NULL);
emit_initializer(env, entity);
*/
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);
}
/* 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;
+ 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_irprintf("%I\n", asmtext);
+ 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_dwarf_open();
+ be_dwarf_unit_begin(env->cup_name);
+
+ block_numbers = pmap_create();
+ next_block_nr = 0;
+
+ emit_global_asms();
+}
+
+void be_gas_end_compilation_unit(const be_main_env_t *env)
+{
+ emit_global_decls(env);
+
+ pmap_destroy(block_numbers);
+
+ be_dwarf_unit_end();
+ be_dwarf_close();
+}
projects / libfirm / blobdiff