/*
- * 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 "irprog.h"
#include "entity_t.h"
#include "error.h"
+#include "util.h"
#include "be_t.h"
#include "beemitter.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 = '@';
* write it to the disk. This is an artifact from the old C-generating backend
* and even there NOT needed. So we might change it in the future.
*/
-typedef struct _be_gas_decl_env {
+typedef struct be_gas_decl_env {
be_gas_section_t section;
const be_main_env_t *main_env;
} be_gas_decl_env_t;
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);
}
}
-static void emit_section(be_gas_section_t section, const ir_entity *entity)
+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"
};
- static const char *const type[] = {
- "", "progbits", "progbits", "nobits", "init_array", "fini_array"
+
+ if (current_section == section && !(section & GAS_SECTION_FLAG_COMDAT))
+ return;
+ current_section = section;
+
+ be_emit_cstring("\t.section\t\".");
+
+ /* Part1: section-name */
+ if (flags & GAS_SECTION_FLAG_TLS)
+ be_emit_char('t');
+ assert(base < (be_gas_section_t)ARRAY_SIZE(basename));
+ be_emit_string(basename[base]);
+
+ if (flags & GAS_SECTION_FLAG_COMDAT) {
+ be_emit_char('.');
+ be_gas_emit_entity(entity);
+ }
+ be_emit_char('"');
+
+ /* for the simple sections we're done here */
+ if (flags == 0)
+ goto end;
+
+ be_emit_cstring(",#alloc");
+
+ switch (base) {
+ case GAS_SECTION_TEXT: be_emit_cstring(",#execinstr"); break;
+ case GAS_SECTION_DATA:
+ case GAS_SECTION_BSS: be_emit_cstring(",#write"); break;
+ default:
+ /* nothing */
+ break;
+ }
+ if (flags & GAS_SECTION_FLAG_TLS) {
+ be_emit_cstring(",#tls");
+ }
+
+end:
+ be_emit_char('\n');
+ be_emit_write_line();
+}
+
+static void emit_section(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;
+ 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_elf_variant == ELF_VARIANT_SPARC) {
+ emit_section_sparc(section, entity);
+ return;
}
if (current_section == section && !(section & GAS_SECTION_FLAG_COMDAT))
}
}
- assert(base < sizeof(basename)/sizeof(basename[0]));
+ 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_RODATA)
- 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');
- be_emit_cstring("\",");
- be_emit_char(be_gas_elf_type_char);
- be_emit_string(type[base]);
+
+ /* 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(sectioninfos[base].type);
+ }
if (flags & GAS_SECTION_FLAG_COMDAT) {
be_emit_char(',');
be_emit_write_line();
}
+
+
void be_gas_emit_switch_section(be_gas_section_t section)
{
/* you have to produce a switch_section call with entity manually
emit_section(section, NULL);
}
-static tarval *get_initializer_tarval(const ir_initializer_t *initializer)
+static ir_tarval *get_initializer_tarval(const ir_initializer_t *initializer)
{
if (initializer->kind == IR_INITIALIZER_TARVAL)
return initializer->tarval.value;
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;
- tarval *tv;
+ ir_tarval *tv;
ir_mode *mode;
ir_initializer_t *sub_initializer
= initializer->compound.initializers[i];
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;
case IR_INITIALIZER_NULL:
return true;
case IR_INITIALIZER_TARVAL: {
- tarval *tv = initializer->tarval.value;
+ ir_tarval *tv = initializer->tarval.value;
return tarval_is_null(tv);
}
case IR_INITIALIZER_CONST: {
} 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;
return section | GAS_SECTION_FLAG_TLS;
}
+ /* the java frontend keeps some functions inside classes */
+ if (is_Class_type(owner)) {
+ return determine_basic_section(entity);
+ }
+
panic("Couldn't determine section for %+F?!?", entity);
}
}
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)
{
- 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();
+}
/**
* Output a tarval.
* @param tv the tarval
* @param bytes the width of the tarvals value in bytes
*/
-static void emit_arith_tarval(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;
}
panic("Can't dump a tarval with %d bytes", bytes);
}
-/**
- * Return the label prefix for labeled blocks.
- */
-const char *be_gas_block_label_prefix(void)
-{
- return ".LG";
-}
-
/**
* Return the label prefix for labeled instructions.
*/
*
* @return the tarval
*/
-static tarval *get_atomic_init_tv(ir_node *init)
+static ir_tarval *get_atomic_init_tv(ir_node *init)
{
for (;;) {
ir_mode *mode = get_irn_mode(init);
* @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);
- tarval *tv;
+ ir_tarval *tv;
ir_entity *ent;
init = skip_Id(init);
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;
case iro_SymConst:
switch (get_SymConst_kind(init)) {
- case symconst_addr_name:
- be_emit_ident(get_SymConst_name(init));
- break;
-
case symconst_addr_ent:
ent = get_SymConst_entity(init);
be_gas_emit_entity(ent);
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();
-}
-
-/************************************************************************/
-/* Routines to dump global variables */
-/************************************************************************/
-
/**
* 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;
}
}
remaining_space = type_size - len;
assert(remaining_space >= 0);
if (remaining_space > 0) {
- be_emit_irprintf("\t.zero\t%d\n", remaining_space);
+ be_emit_irprintf("\t.space\t%d, 0\n", remaining_space);
}
}
-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;
const ir_initializer_t *sub_initializer
= get_initializer_compound_value(initializer, i);
- tarval *tv = get_initializer_tarval(sub_initializer);
- int c = get_tarval_long(tv);
+ ir_tarval *tv = get_initializer_tarval(sub_initializer);
+ int c = get_tarval_long(tv);
switch (c) {
case '"' : be_emit_cstring("\\\""); break;
if (isprint(c))
be_emit_char(c);
else
- be_emit_irprintf("\\%o", c);
+ be_emit_irprintf("\\%03o", c);
break;
}
}
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;
+ ir_type *type;
union {
- ir_node *value;
- 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);
static void emit_bitfield(normal_or_bitfield *vals, size_t offset_bits,
const ir_initializer_t *initializer, ir_type *type)
{
- unsigned char last_bits = 0;
- ir_mode *mode = get_type_mode(type);
- tarval *tv = NULL;
- unsigned char curr_bits;
- int value_len;
- int j;
+ static const size_t BITS_PER_BYTE = 8;
+ ir_mode *mode = get_type_mode(type);
+ ir_tarval *tv = NULL;
+ int value_len;
+ size_t bit_offset;
+ size_t end;
+ bool big_endian = be_get_backend_param()->byte_order_big_endian;
switch (get_initializer_kind(initializer)) {
case IR_INITIALIZER_NULL:
}
tv = tarval_convert_to(tv, get_type_mode(type));
- /* normalize offset */
- vals += offset_bits >> 3;
- offset_bits &= 7;
- value_len = get_mode_size_bits(mode);
-
- /* combine bits with existing bits */
- for (j = 0; value_len + (int) offset_bits > 0; ++j) {
- assert((size_t) (vals - glob_vals) + j < max_vals);
- assert(vals[j].kind == BITFIELD ||
- (vals[j].kind == NORMAL && vals[j].v.value == NULL));
- vals[j].kind = BITFIELD;
- curr_bits = get_tarval_sub_bits(tv, j);
- vals[j].v.bf_val
- |= (last_bits >> (8 - offset_bits)) | (curr_bits << offset_bits);
- value_len -= 8;
- last_bits = curr_bits;
+ value_len = get_type_size_bytes(get_primitive_base_type(type));
+ bit_offset = 0;
+ end = get_mode_size_bits(mode);
+ while (bit_offset < end) {
+ size_t src_offset = bit_offset / BITS_PER_BYTE;
+ size_t src_offset_bits = bit_offset % BITS_PER_BYTE;
+ size_t dst_offset = (bit_offset+offset_bits) / BITS_PER_BYTE;
+ size_t dst_offset_bits = (bit_offset+offset_bits) % BITS_PER_BYTE;
+ size_t src_bits_len = end-bit_offset;
+ size_t dst_bits_len = BITS_PER_BYTE-dst_offset_bits;
+ unsigned char curr_bits;
+ normal_or_bitfield *val;
+ if (src_bits_len > dst_bits_len)
+ src_bits_len = dst_bits_len;
+
+ if (big_endian) {
+ val = &vals[value_len - dst_offset - 1];
+ } else {
+ val = &vals[dst_offset];
+ }
+
+ assert((val-glob_vals) < (ptrdiff_t) max_vals);
+ assert(val->kind == BITFIELD ||
+ (val->kind == NORMAL && val->v.value == NULL));
+ val->kind = BITFIELD;
+ curr_bits = get_tarval_sub_bits(tv, src_offset);
+ curr_bits = curr_bits >> src_offset_bits;
+ if (src_offset_bits + src_bits_len > 8) {
+ unsigned next_bits = get_tarval_sub_bits(tv, src_offset+1);
+ curr_bits |= next_bits << (8 - src_offset_bits);
+ }
+ curr_bits &= (1 << src_bits_len) - 1;
+ val->v.bf_val |= curr_bits << dst_offset_bits;
+
+ bit_offset += dst_bits_len;
}
}
{
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;
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)) {
+ 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;
- if (vals[k].kind == NORMAL) {
+ int space = 0;
+ 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));
- } else {
- elem_size = 0;
- }
- } else if (vals[k].kind == TARVAL) {
- 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();
- } else {
- assert(vals[k].kind == BITFIELD);
+ 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:
+ 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;
/* a gap */
if (space > 0) {
- be_emit_irprintf("\t.space\t%d\n", space);
+ be_emit_irprintf("\t.space\t%d, 0\n", space);
be_emit_write_line();
}
}
if (offset_bits != 0 ||
(value_len != 8 && value_len != 16 && value_len != 32 && value_len != 64)) {
- tarval *tv = get_atomic_init_tv(value);
+ 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'",
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;
/* a gap */
if (space > 0) {
- be_emit_irprintf("\t.space\t%d\n", space);
+ be_emit_irprintf("\t.space\t%d, 0\n", space);
be_emit_write_line();
}
}
switch (be_gas_object_file_format) {
case OBJECT_FILE_FORMAT_MACH_O:
- be_emit_cstring("\t.lcomm ");
+ be_emit_cstring("\t.comm ");
be_gas_emit_entity(entity);
be_emit_irprintf(",%u,%u\n", size, log2_floor(alignment));
be_emit_write_line();
/* we can only do PIC code on macho so far */
assert(be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O);
- be_emit_ident(get_entity_ld_ident(entity));
+ be_gas_emit_entity(entity);
be_emit_cstring(":\n");
be_emit_write_line();
be_emit_cstring("\t.indirect_symbol ");
}
}
+char const *be_gas_get_private_prefix(void)
+{
+ return be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O ? "L" : ".L";
+}
+
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_string(be_gas_block_label_prefix());
- be_emit_irprintf("%lu", label);
+ be_emit_irprintf("%s_%lu", be_gas_get_private_prefix(), label);
return;
}
if (get_entity_visibility(entity) == ir_visibility_private) {
- be_emit_cstring(".L");
+ be_emit_string(be_gas_get_private_prefix());
}
be_emit_ident(get_entity_ld_ident(entity));
}
+void be_gas_emit_block_name(const ir_node *block)
+{
+ if (get_Block_entity(block) != NULL) {
+ ir_entity *entity = get_Block_entity(block);
+ be_gas_emit_entity(entity);
+ } else {
+ be_emit_irprintf("%s%ld", be_gas_get_private_prefix(), get_irn_node_nr(block));
+ }
+}
+
/**
* Dump a global entity.
*
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
be_dbg_variable(entity);
if (section == GAS_SECTION_BSS) {
- ir_visibility visibility = get_entity_visibility(entity);
-
switch (visibility) {
case ir_visibility_local:
case ir_visibility_private:
}
break;
case ir_visibility_external:
- panic("merge link semantic not supported for extern entities");
+ if (linkage & IR_LINKAGE_MERGE)
+ panic("merge link semantic not supported for extern entities");
break;
}
}
emit_align(alignment);
}
if (be_gas_object_file_format == OBJECT_FILE_FORMAT_ELF
- && be_gas_emit_types) {
+ && be_gas_emit_types
+ && visibility != ir_visibility_private) {
be_emit_cstring("\t.type\t");
be_gas_emit_entity(entity);
be_emit_cstring(", ");
}
if (entity_is_null(entity)) {
- be_emit_irprintf("\t.zero %u\n", get_type_size_bytes(type));
- be_emit_write_line();
- } else if(entity_has_compound_ent_values(entity)) {
+ 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 {
assert(entity->initializer != NULL);
*/
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;
+ 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();
+}