/*
- * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
- *
* This file is part of libFirm.
- *
- * This file may be distributed and/or modified under the terms of the
- * GNU General Public License version 2 as published by the Free Software
- * Foundation and appearing in the file LICENSE.GPL included in the
- * packaging of this file.
- *
- * Licensees holding valid libFirm Professional Edition licenses may use
- * this file in accordance with the libFirm Commercial License.
- * Agreement provided with the Software.
- *
- * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
- * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE.
+ * Copyright (C) 2012 University of Karlsruhe.
*/
/**
#include "entity_t.h"
#include "error.h"
#include "util.h"
+#include "execfreq.h"
#include "be_t.h"
+#include "bearch.h"
#include "beemitter.h"
#include "bedwarf.h"
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_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;
} else {
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)
{
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();
}
}
-void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment, const parameter_dbg_info_t *parameter_infos)
+void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment, const parameter_dbg_info_t *parameter_infos)
{
be_gas_section_t section;
/* write the begin line (makes the life easier for scripts parsing the
* assembler) */
- 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 = "";
be_emit_write_line();
}
- be_emit_cstring("# -- End ");
- be_gas_emit_entity(entity);
- be_emit_char('\n');
- be_emit_write_line();
+ 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;
}
/**
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.
*
init = skip_Id(init);
switch (get_irn_opcode(init)) {
- case iro_Cast:
- emit_init_expression(env, get_Cast_op(init));
- return;
-
case iro_Conv:
emit_init_expression(env, get_Conv_op(init));
return;
return;
default:
- panic("emit_atomic_init(): unsupported IR-node %+F", init);
+ panic("unsupported IR-node %+F", init);
}
}
}
}
-/**
- * Dump a string constant.
- * No checks are made!!
- *
- * @param ent The entity to dump.
- */
-static void emit_string_cst(const ir_entity *ent)
+static void emit_string_char(int c)
{
- 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("\\%03o", 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("\\%03o", 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,
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);
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_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;
- }
- } 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_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");
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 (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();
}
/**
ir_visibility visibility = get_entity_visibility(entity);
ir_linkage linkage = get_entity_linkage(entity);
- /* block labels are already emittet in the code */
+ /* 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;
}
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)) {
+ /* 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 if (entity_has_compound_ent_values(entity)) {
- emit_compound_graph_init(env, entity);
} else {
assert(entity->initializer != NULL);
emit_initializer(env, entity);
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;
+ 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) {
be_emit_cstring("#APP\n");
be_emit_write_line();
- be_emit_ident(asmtext);
- be_emit_char('\n');
+ be_emit_irprintf("%I\n", asmtext);
be_emit_write_line();
be_emit_cstring("#NO_APP\n");
be_emit_write_line();
be_dwarf_open();
be_dwarf_unit_begin(env->cup_name);
+ block_numbers = pmap_create();
+ next_block_nr = 0;
+
emit_global_asms();
}
{
emit_global_decls(env);
+ pmap_destroy(block_numbers);
+
be_dwarf_unit_end();
be_dwarf_close();
}
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