* @version $Id$
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
-#include "xmalloc.h"
-#include <obstack.h>
-
-#ifdef obstack_chunk_alloc
-# undef obstack_chunk_alloc
-# define obstack_chunk_alloc xmalloc
-#else
-# define obstack_chunk_alloc xmalloc
-# define obstack_chunk_free free
-#endif
-
-extern int obstack_printf(struct obstack *obst, char *fmt, ...);
-
+#include "obst.h"
#include "tv.h"
#include "irnode.h"
#include "entity.h"
#include "irprog.h"
+#include "error.h"
+#include "../be.h"
+
+#include "ia32_emitter.h"
#include "ia32_gen_decls.h"
+typedef struct obstack obstack_t;
+
+typedef struct _ia32_decl_env {
+ obstack_t *rodata_obst;
+ obstack_t *data_obst;
+ obstack_t *bss_obst;
+ obstack_t *ctor_obst;
+ const be_main_env_t *main_env;
+} ia32_decl_env_t;
+
/************************************************************************/
-/*
- * returns the highest bit value
+/**
+ * output a tarval
*/
-static unsigned highest_bit(unsigned v)
+static void dump_arith_tarval(obstack_t *obst, tarval *tv, int bytes)
{
- int res = -1;
-
- if (v >= (1U << 16U)) {
- res += 16;
- v >>= 16;
- }
- if (v >= (1U << 8U)) {
- res += 8;
- v >>= 8;
- }
- if (v >= (1U << 4U)) {
- res += 4;
- v >>= 4;
- }
- if (v >= (1U << 2U)) {
- res += 2;
- v >>= 2;
- }
- if (v >= (1U << 1U)) {
- res += 1;
- v >>= 1;
- }
- if (v >= 1)
- res += 1;
-
- return res;
+ switch (bytes) {
+
+ case 1:
+ obstack_printf(obst, "0x%02x", get_tarval_sub_bits(tv, 0));
+ break;
+
+ case 2:
+ obstack_printf(obst, "0x%02x%02x", get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
+ break;
+
+ case 4:
+ obstack_printf(obst, "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));
+ break;
+
+ case 8:
+ obstack_printf(obst, "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));
+ break;
+
+ case 10:
+ case 12:
+ break;
+
+ default:
+ fprintf(stderr, "Try to dump an tarval with %d bytes\n", bytes);
+ assert(0);
+ }
}
-/*
- * output the alignment
+/**
+ * Return the tarval of an atomic initializer.
*/
-static void ia32_dump_align(struct obstack *obst, int align)
+static tarval *get_atomic_init_tv(ir_node *init)
{
- int h = highest_bit(align);
+ for (;;) {
+ ir_mode *mode = get_irn_mode(init);
- if ((1 << h) < align)
- ++h;
- align = (1 << h);
+ switch (get_irn_opcode(init)) {
- if (align > 1)
- obstack_printf(obst, "\t.align %d\n", align);
-}
+ case iro_Cast:
+ init = get_Cast_op(init);
+ continue;
-static void dump_arith_tarval(struct obstack *obst, tarval *tv, int bytes)
-{
- switch (bytes) {
-
- case 1:
- obstack_printf(obst, "0x%02x", get_tarval_sub_bits(tv, 0));
- break;
-
- case 2:
- obstack_printf(obst, "0x%02x%02x", get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0));
- break;
-
- case 4:
- obstack_printf(obst, "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));
- break;
-
- case 8:
- obstack_printf(obst, "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));
- break;
-
- case 10:
- case 12:
- break;
-
- default:
- fprintf(stderr, "Try to dump an tarval with %d bytes\n", bytes);
- assert(0);
- }
-}
+ case iro_Conv:
+ init = get_Conv_op(init);
+ continue;
-/*
- * dump an arithmetic tarval
- */
-static void ia32_dump_arith_tarval(struct obstack *obst, tarval *tv, int bytes)
-{
- switch (bytes) {
+ case iro_Const:
+ return get_Const_tarval(init);
- case 1:
- obstack_printf(obst, "\t.byte\t");
- break;
+ case iro_SymConst:
+ switch (get_SymConst_kind(init)) {
+ case symconst_ofs_ent:
+ return new_tarval_from_long(get_entity_offset(get_SymConst_entity(init)), mode);
- case 2:
- obstack_printf(obst, "\t.value\t");
- break;
+ case symconst_type_size:
+ return new_tarval_from_long(get_type_size_bytes(get_SymConst_type(init)), mode);
- case 4:
- obstack_printf(obst, "\t.long\t");
- break;
+ case symconst_type_align:
+ return new_tarval_from_long(get_type_alignment_bytes(get_SymConst_type(init)), mode);
- case 8:
- obstack_printf(obst, "\t.quad\t");
- break;
+ case symconst_enum_const:
+ return get_enumeration_value(get_SymConst_enum(init));
- case 10:
- case 12:
- break;
+ default:
+ return NULL;
+ }
- default:
- fprintf(stderr, "Try to dump an tarval with %d bytes\n", bytes);
- assert(0);
- }
- dump_arith_tarval(obst, tv, bytes);
+ default:
+ return NULL;
+ }
+ }
}
-
-/*
+/**
* dump an atomic value
*/
-static void do_dump_atomic_init(struct obstack *obst, ir_node *init)
+static void do_dump_atomic_init(obstack_t *obst, ir_node *init)
{
- ir_mode *mode = get_irn_mode(init);
- int bytes = get_mode_size_bytes(mode);
- tarval *tv;
-
- switch (get_irn_opcode(init)) {
-
- case iro_Cast:
- do_dump_atomic_init(obst, get_Cast_op(init));
- return;
-
- case iro_Conv:
- do_dump_atomic_init(obst, get_Conv_op(init));
- return;
-
- case iro_Const:
- tv = get_Const_tarval(init);
-
- /* beware of old stuff */
- assert(! mode_is_reference(mode));
-
- /* it's a arithmetic value */
- dump_arith_tarval(obst, tv, bytes);
- return;
-
- case iro_SymConst:
- switch (get_SymConst_kind(init)) {
- case symconst_addr_name:
- obstack_printf(obst, "%s", get_id_str(get_SymConst_name(init)));
- break;
-
- case symconst_addr_ent:
- obstack_printf(obst, "%s", get_entity_ld_name(get_SymConst_entity(init)));
- break;
-
- case symconst_size:
- obstack_printf(obst, "%d", get_type_size_bytes(get_SymConst_type(init)));
- break;
-
- default:
- assert(0 && "dump_atomic_init(): don't know how to init from this SymConst");
- }
- return;
-
- case iro_Add:
- do_dump_atomic_init(obst, get_Add_left(init));
- obstack_printf(obst, " + ");
- do_dump_atomic_init(obst, get_Add_right(init));
- return;
-
- case iro_Sub:
- do_dump_atomic_init(obst, get_Sub_left(init));
- obstack_printf(obst, " - ");
- do_dump_atomic_init(obst, get_Sub_right(init));
- return;
-
- case iro_Mul:
- do_dump_atomic_init(obst, get_Mul_left(init));
- obstack_printf(obst, " * ");
- do_dump_atomic_init(obst, get_Mul_right(init));
- return;
-
- default:
- assert(0 && "dump_atomic_init(): unknown IR-node");
- }
+ ir_mode *mode = get_irn_mode(init);
+ int bytes = get_mode_size_bytes(mode);
+ tarval *tv;
+
+ switch (get_irn_opcode(init)) {
+
+ case iro_Cast:
+ do_dump_atomic_init(obst, get_Cast_op(init));
+ return;
+
+ case iro_Conv:
+ do_dump_atomic_init(obst, get_Conv_op(init));
+ return;
+
+ case iro_Const:
+ tv = get_Const_tarval(init);
+
+ /* beware of old stuff */
+ //assert(! mode_is_reference(mode));
+
+ /* it's a arithmetic value */
+ dump_arith_tarval(obst, tv, bytes);
+ return;
+
+ case iro_SymConst:
+ switch (get_SymConst_kind(init)) {
+ case symconst_addr_name:
+ obstack_printf(obst, "%s", get_id_str(get_SymConst_name(init)));
+ break;
+
+ case symconst_addr_ent:
+ obstack_printf(obst, "%s", get_entity_ld_name(get_SymConst_entity(init)));
+ break;
+
+ case symconst_ofs_ent:
+ obstack_printf(obst, "%d", get_entity_offset(get_SymConst_entity(init)));
+ break;
+
+ case symconst_type_size:
+ obstack_printf(obst, "%d", get_type_size_bytes(get_SymConst_type(init)));
+ break;
+
+ case symconst_type_align:
+ obstack_printf(obst, "%d", get_type_alignment_bytes(get_SymConst_type(init)));
+ break;
+
+ case symconst_enum_const:
+ tv = get_enumeration_value(get_SymConst_enum(init));
+ dump_arith_tarval(obst, tv, bytes);
+ break;
+
+ default:
+ assert(!"dump_atomic_init(): don't know how to init from this SymConst");
+ }
+ return;
+
+ case iro_Add:
+ do_dump_atomic_init(obst, get_Add_left(init));
+ obstack_printf(obst, " + ");
+ do_dump_atomic_init(obst, get_Add_right(init));
+ return;
+
+ case iro_Sub:
+ do_dump_atomic_init(obst, get_Sub_left(init));
+ obstack_printf(obst, " - ");
+ do_dump_atomic_init(obst, get_Sub_right(init));
+ return;
+
+ case iro_Mul:
+ do_dump_atomic_init(obst, get_Mul_left(init));
+ obstack_printf(obst, " * ");
+ do_dump_atomic_init(obst, get_Mul_right(init));
+ return;
+
+ default:
+ assert(0 && "dump_atomic_init(): unknown IR-node");
+ }
}
-/*
- * dump an atomic value
+/**
+ * dumps the type for given size (.byte, .long, ...)
*/
-static void dump_atomic_init(struct obstack *obst, ir_node *init)
-{
- ir_mode *mode = get_irn_mode(init);
- int bytes = get_mode_size_bytes(mode);
+static void dump_size_type(obstack_t *obst, int size) {
+ switch (size) {
- switch (bytes) {
+ case 1:
+ obstack_printf(obst, "\t.byte\t");
+ break;
- case 1:
- obstack_printf(obst, "\t.byte\t");
- break;
+ case 2:
+ obstack_printf(obst, "\t.value\t");
+ break;
- case 2:
- obstack_printf(obst, "\t.value\t");
- break;
+ case 4:
+ obstack_printf(obst, "\t.long\t");
+ break;
- case 4:
- obstack_printf(obst, "\t.long\t");
- break;
+ case 8:
+ obstack_printf(obst, "\t.quad\t");
+ break;
- case 8:
- obstack_printf(obst, "\t.quad\t");
- break;
+ case 10:
+ case 12:
+ /* handled in arith */
+ break;
- case 10:
- case 12:
- /* handled in arith */
- break;
+ default:
+ fprintf(stderr, "Try to dump a type with %d bytes\n", size);
+ assert(0);
+ }
+}
- default:
- fprintf(stderr, "Try to dump an tarval with %d bytes\n", bytes);
- assert(0);
- }
+/**
+ * dump an atomic value to an obstack
+ */
+static void dump_atomic_init(obstack_t *obst, ir_node *init)
+{
+ ir_mode *mode = get_irn_mode(init);
+ int bytes = get_mode_size_bytes(mode);
- do_dump_atomic_init(obst, init);
- obstack_printf(obst, "\n");
+ dump_size_type(obst, bytes);
+ do_dump_atomic_init(obst, init);
+ obstack_printf(obst, "\n");
}
/************************************************************************/
* @param ent The entity
* @return 1 if it is a string constant, 0 otherwise
*/
-static int ent_is_string_const(entity *ent)
+static int ent_is_string_const(ir_entity *ent)
{
- int res = 0;
- ir_type *ty;
-
- ty = get_entity_type(ent);
-
- /* if it's an array */
- if (is_Array_type(ty)) {
- ir_type *elm_ty = get_array_element_type(ty);
+ int res = 0;
+ ir_type *ty;
+
+ ty = get_entity_type(ent);
+
+ /* if it's an array */
+ if (is_Array_type(ty)) {
+ ir_type *elm_ty = get_array_element_type(ty);
+
+ /* and the array's element type is primitive */
+ if (is_Primitive_type(elm_ty)) {
+ ir_mode *mode = get_type_mode(elm_ty);
+
+ /*
+ * and the mode of the element type is an int of
+ * the same size as the byte mode
+ */
+ if (mode_is_int(mode)
+ && get_mode_size_bits(mode) == get_mode_size_bits(mode_Bs))
+ {
+ int i, c, n;
+
+ n = get_compound_ent_n_values(ent);
+ for (i = 0; i < n; ++i) {
+ ir_node *irn = get_compound_ent_value(ent, i);
+ if(get_irn_opcode(irn) != iro_Const)
+ return 0;
+
+ c = (int) get_tarval_long(get_Const_tarval(irn));
+
+ if((i < n - 1 && !(isgraph(c) || isspace(c)))
+ || (i == n - 1 && c != '\0'))
+ return 0;
+ }
+
+ res = 1;
+ }
+ }
+ }
- /* and the array's element type is primitive */
- if (is_Primitive_type(elm_ty)) {
- ir_mode *mode = get_type_mode(elm_ty);
+ return res;
+}
- /*
- * and the mode of the element type is an int of
- * the same size as the byte mode
- */
- if (mode_is_int(mode)
- && get_mode_size_bits(mode) == get_mode_size_bits(mode_Bs))
- {
- int i, c, n;
+/**
+ * Dump a string constant.
+ * No checks are made!!
+ * @param obst The obst to dump on.
+ * @param ent The entity to dump.
+ */
+static void dump_string_cst(obstack_t *obst, ir_entity *ent)
+{
+ int i, n;
+ obstack_printf(obst, "\t.string \"");
n = get_compound_ent_n_values(ent);
- for (i = 0; i < n; ++i) {
- ir_node *irn = get_compound_ent_value(ent, i);
- if(get_irn_opcode(irn) != iro_Const)
- return 0;
- c = (int) get_tarval_long(get_Const_tarval(irn));
-
- if((i < n - 1 && !(isgraph(c) || isspace(c)))
- || (i == n - 1 && c != '\0'))
- return 0;
+ for (i = 0; i < n-1; ++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 '"' : obstack_printf(obst, "\\\""); break;
+ case '\n': obstack_printf(obst, "\\n"); break;
+ case '\r': obstack_printf(obst, "\\r"); break;
+ case '\t': obstack_printf(obst, "\\t"); break;
+ case '\\': obstack_printf(obst, "\\\\"); break;
+ default :
+ if (isprint(c))
+ obstack_printf(obst, "%c", c);
+ else
+ obstack_printf(obst, "\\%o", c);
+ break;
+ }
}
+ obstack_printf(obst, "\"\n");
+}
- res = 1;
- }
- }
- }
+static void dump_array_init(obstack_t *obst, ir_entity *ent)
+{
+ const ir_type *ty = get_entity_type(ent);
+ int i;
+ int filler;
+ int size = 0;
+
+ /* potential spare values should be already included! */
+ for (i = 0; i < get_compound_ent_n_values(ent); ++i) {
+ ir_entity *step = get_compound_ent_value_member(ent, i);
+ ir_type *stype = get_entity_type(step);
+
+ if (get_type_mode(stype)) {
+ int align = (get_type_alignment_bits(stype) + 7) >> 3;
+ int n = size % align;
+
+ if (n > 0) {
+ obstack_printf(obst, "\t.zero\t%d\n", align - n);
+ size += align - n;
+ }
+ }
+ dump_atomic_init(obst, get_compound_ent_value(ent, i));
+ size += get_type_size_bytes(stype);
+ }
+ filler = get_type_size_bytes(ty) - size;
- return res;
+ if (filler > 0)
+ obstack_printf(obst, "\t.skip\t%d\n", filler);
}
+enum normal_or_bitfield_kind {
+ NORMAL = 0,
+ BITFIELD
+};
+
+typedef struct {
+ enum normal_or_bitfield_kind kind;
+ union {
+ ir_node *value;
+ unsigned char bf_val;
+ } v;
+} normal_or_bitfield;
+
/**
- * Dump a atring constant.
- * No checks are made!!
- * @param obst The obst to dump on.
- * @param ent The entity to dump.
+ * Dump an initializer for a compound entity.
*/
-static void dump_string_cst(struct obstack *obst, entity *ent)
+static void dump_compound_init(obstack_t *obst, ir_entity *ent)
{
- int i, n;
-
- obstack_printf(obst, "\t.string \"");
- n = get_compound_ent_n_values(ent);
-
- for (i = 0; i < n-1; ++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 '"' : obstack_printf(obst, "\\\""); break;
- case '\n': obstack_printf(obst, "\\n"); break;
- case '\r': obstack_printf(obst, "\\r"); break;
- case '\t': obstack_printf(obst, "\\t"); break;
- default :
- if (isprint(c))
- obstack_printf(obst, "%c", c);
- else
- obstack_printf(obst, "%O", c);
- break;
- }
- }
- obstack_printf(obst, "\"\n");
-}
+ normal_or_bitfield *vals;
+ int i, j, n = get_compound_ent_n_values(ent);
+ int last_ofs;
+
+ /* Find the initializer size. Sorrily gcc support a nasty feature:
+ The last filed of a compound may be a flexible array. This allows
+ initializers bigger than the type size. */
+ last_ofs = 0;
+ for (i = 0; i < n; ++i) {
+ int offset = get_compound_ent_value_offset_bytes(ent, i);
+ int bits_remainder = get_compound_ent_value_offset_bit_remainder(ent, i);
+ const compound_graph_path *path = get_compound_ent_value_path(ent, i);
+ int path_len = get_compound_graph_path_length(path);
+ ir_entity *last_ent = get_compound_graph_path_node(path, path_len - 1);
+ int value_len = get_type_size_bits(get_entity_type(last_ent));
+
+ offset += (value_len + bits_remainder + 7) >> 3;
+
+ if (offset > last_ofs) {
+ last_ofs = offset;
+ }
+ }
-struct arr_info {
- int n_elems;
- int visit_cnt;
- int size;
-};
+ /*
+ * In the worst case, every initializer allocates one byte.
+ * Moreover, initializer might be big, do not allocate an stack.
+ */
+ vals = xcalloc(last_ofs, sizeof(vals[0]));
+
+ /* collect the values and store them at the offsets */
+ for (i = 0; i < n; ++i) {
+ const compound_graph_path *path = get_compound_ent_value_path(ent, i);
+ int path_len = get_compound_graph_path_length(path);
+ int 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);
+ ir_entity *last_ent = get_compound_graph_path_node(path, path_len - 1);
+ int value_len = get_type_size_bits(get_entity_type(last_ent));
+ assert(offset >= 0);
+ assert(offset_bits >= 0);
+
+ if (offset_bits != 0 || value_len % 8 != 0) {
+ tarval *shift, *shifted;
+ tarval *tv = get_atomic_init_tv(value);
+ if (tv == NULL) {
+ panic("Couldn't get numeric value for bitfield initializer '%s'\n",
+ get_entity_ld_name(ent));
+ }
+ shift = new_tarval_from_long(offset_bits, mode_Is);
+ shifted = tarval_shl(tv, shift);
+ if (shifted == tarval_bad || shifted == tarval_undefined) {
+ panic("Couldn't shift numeric value for bitfield initializer '%s'\n",
+ get_entity_ld_name(ent));
+ }
+
+ for (j = 0; j < 4 && value_len > 0; ++j) {
+ assert(offset + j < last_ofs);
+ assert(vals[offset + j].kind == BITFIELD || vals[offset + j].v.value == NULL);
+ vals[offset + j].kind = BITFIELD;
+ vals[offset + j].v.bf_val |= get_tarval_sub_bits(shifted, j);
+ value_len -= 8 - offset_bits;
+ offset_bits = 0;
+ }
+ } else {
+ assert(offset < last_ofs);
+ assert(vals[offset].kind == NORMAL);
+ assert(vals[offset].v.value == NULL);
+ vals[offset].v.value = value;
+ }
+ }
+
+ /* now write them sorted */
+ for (i = 0; i < last_ofs; ) {
+ int space = 0, skip = 0;
+ if (vals[i].kind == NORMAL) {
+ if(vals[i].v.value != NULL) {
+ dump_atomic_init(obst, vals[i].v.value);
+ skip = get_mode_size_bytes(get_irn_mode(vals[i].v.value)) - 1;
+ } else {
+ space = 1;
+ }
+ } else {
+ obstack_printf(obst, "\t.byte\t%d\n", vals[i].v.bf_val);
+ }
+
+ ++i;
+ space = 0;
+ while (i < last_ofs && vals[i].kind == NORMAL && vals[i].v.value == NULL) {
+ ++space;
+ ++i;
+ }
+ space -= skip;
+ assert(space >= 0);
+
+ /* a gap */
+ if (space > 0)
+ obstack_printf(obst, "\t.skip\t%d\n", space);
+ }
+ xfree(vals);
+}
-/*
- * Dumps the initialization of global variables that are not
- * "uninitialized".
+/**
+ * Dump a global entity.
*/
-static void dump_global(struct obstack *rdata_obstack, struct obstack *data_obstack, struct obstack *comm_obstack, entity *ent)
+static void dump_global(ia32_decl_env_t *env, ir_entity *ent)
{
- ir_type *ty = get_entity_type(ent);
- const char *ld_name = get_entity_ld_name(ent);
- int align, h;
- struct obstack *obst = data_obstack;
-
- /*
- * FIXME: did NOT work for partly constant values
- */
- if (! is_Method_type(ty)) {
- ent_variability variability = get_entity_variability(ent);
- visibility visibility = get_entity_visibility(ent);
-
- if (variability == variability_constant) {
- /* a constant entity, put it on the rdata */
- obst = rdata_obstack;
- }
-
- /* check, wether it is initialized, if yes create data */
- if (variability != variability_uninitialized) {
- if (visibility == visibility_external_visible) {
- obstack_printf(obst, ".globl\t%s\n", ld_name);
- }
- obstack_printf(obst, "\t.type\t%s,@object\n", ld_name);
- obstack_printf(obst, "\t.size\t%s,%d\n", ld_name, (get_type_size_bits(ty) + 7) >> 3);
-
- align = get_type_alignment_bytes(ty);
- ia32_dump_align(obst, align);
-
- obstack_printf(obst, "%s:\n", ld_name);
-
- if (is_atomic_type(ty)) {
- if (get_entity_visibility(ent) != visibility_external_allocated)
- dump_atomic_init(obst, get_atomic_ent_value(ent));
- }
- else {
- int i, size = 0;
-
- if (ent_is_string_const(ent)) {
- dump_string_cst(obst, ent);
- }
- else if (is_Array_type(ty)) {
- int filler;
-
- /* potential spare values should be already included! */
- for (i = 0; i < get_compound_ent_n_values(ent); ++i) {
- entity *step = get_compound_ent_value_member(ent, i);
- ir_type *stype = get_entity_type(step);
-
- if (get_type_mode(stype)) {
- int align = (get_type_alignment_bits(stype) + 7) >> 3;
- int n = size % align;
-
- if (n > 0) {
- obstack_printf(obst, "\t.zero\t%d\n", align - n);
- size += align - n;
- }
- }
- dump_atomic_init(obst, get_compound_ent_value(ent, i));
- size += get_type_size_bytes(stype);
- }
- filler = get_type_size_bytes(ty) - size;
-
- if (filler > 0)
- obstack_printf(obst, "\t.zero\t%d\n", filler);
- }
- else if (is_compound_type(ty)) {
- ir_node **vals;
- int type_size, j;
-
- /* Compound entities are NOT sorted.
- * The sorting strategy used doesn't work for `value' compound fields nor
- * for partially_constant entities.
- */
-
- /*
- * in the worst case, every entity allocates one byte, so the type
- * size should be equal or bigger the number of fields
- */
- type_size = get_type_size_bytes(ty);
- vals = xcalloc(type_size, sizeof(*vals));
-
- /* collect the values and store them at the offsets */
- for(i = 0; i < get_compound_ent_n_values(ent); ++i) {
- int graph_length, aipos, offset;
- struct arr_info *ai;
- int all_n = 1;
- compound_graph_path *path = get_compound_ent_value_path(ent, i);
-
- /* get the access path to the costant value */
- graph_length = get_compound_graph_path_length(path);
- ai = xcalloc(graph_length, sizeof(struct arr_info));
-
- /* We wanna know how many arrays are on the path to the entity. We also have to know how
- * many elements each array holds to calculate the offset for the entity. */
- for (j = 0; j < graph_length; j++) {
- entity *step = get_compound_graph_path_node(path, j);
- ir_type *step_type = get_entity_type(step);
- int ty_size = (get_type_size_bits(step_type) + 7) >> 3;
- int k, n = 0;
-
- if (is_Array_type(step_type))
- for (k = 0; k < get_array_n_dimensions(step_type); k++)
- n += get_tarval_long(get_Const_tarval(get_array_upper_bound(step_type, k)));
- if (n) all_n *= n;
- ai[j].n_elems = n ? all_n + 1 : 0;
- ai[j].visit_cnt = 0;
- ai[j].size = ty_size;
- }
-
- aipos = graph_length - 1;
- if (aipos) aipos--;
-
- for (offset = j = 0; j < graph_length; j++) {
- entity *step = get_compound_graph_path_node(path, j);
- ir_type *step_type = get_entity_type(step);
- int ent_ofs = get_entity_offset_bytes(step);
- int stepsize = 0;
-
- /* add all positive offsets (= offsets in structs) */
- if (ent_ofs >= 0) offset += ent_ofs;
-
- if (j == graph_length - 1) {
- stepsize = (get_type_size_bits(step_type) + 7) >> 3;
-
- /* Search the next free position in vals depending on the information from above (ai). */
- while (vals[offset]) {
- if (ai[aipos].visit_cnt < ai[aipos].n_elems) {
- offset += stepsize;
- ai[aipos].visit_cnt++;
- }
- else
- while (aipos >= 0 && ai[aipos].visit_cnt == ai[aipos].n_elems) {
- stepsize = ai[aipos--].size;
- offset += stepsize;
- }
- }
-
- assert(aipos >= 0 && "couldn't store entity");
- vals[offset] = get_compound_ent_value(ent, i);
- }
- }
-
- free(ai);
- }
-
- /* now write them sorted */
- for(i = 0; i < type_size; ) {
- if (vals[i]) {
- dump_atomic_init(obst, vals[i]);
- i += (get_mode_size_bytes(get_irn_mode(vals[i])));
- }
- else {
- /* a gap */
- obstack_printf(obst, "\t.byte\t0\n");
- ++i;
- }
- }
- free(vals);
- }
- else {
- assert(0 && "unsupported type");
- }
- }
- obstack_printf(obst, "\n");
- }
- else if (visibility != visibility_external_allocated) {
- if (visibility == visibility_local) {
- obstack_printf(comm_obstack, "\t.local\t%s\n", ld_name);
- }
-
- /* calculate the alignment */
- align = get_type_alignment_bytes(ty);
- h = highest_bit(align);
-
- if ((1 << h) < align)
- ++h;
- align = (1 << h);
-
- if (align < 1)
- align = 1;
-
- obstack_printf(comm_obstack, "\t.comm\t%s,%d,%d\n", ld_name, (get_type_size_bits(ty) + 7) >> 3, align);
- }
- }
+ obstack_t *obst;
+ ir_type *type = get_entity_type(ent);
+ const char *ld_name = get_entity_ld_name(ent);
+ ir_variability variability = get_entity_variability(ent);
+ ir_visibility visibility = get_entity_visibility(ent);
+ int align = get_type_alignment_bytes(type);
+
+ obst = env->data_obst;
+ if (is_Method_type(type)) {
+ if (get_method_img_section(ent) == section_constructors) {
+ obst = env->ctor_obst;
+ obstack_printf(obst, ".balign\t%d\n", align);
+ dump_size_type(obst, align);
+ obstack_printf(obst, "%s\n", ld_name);
+ }
+ return;
+ } else if (variability == variability_constant) {
+ /* a constant entity, put it on the rdata */
+ obst = env->rodata_obst;
+ } else if (variability == variability_uninitialized) {
+ /* uninitialized entity put it in bss segment */
+ obst = env->bss_obst;
+ }
+
+ be_dbg_variable(env->main_env->db_handle, obst, ent);
+
+ /* global or not global */
+ if(visibility == visibility_external_visible) {
+ obstack_printf(obst, ".global\t%s\n", ld_name);
+ } else if(visibility == visibility_external_allocated) {
+ obstack_printf(obst, ".global\t%s\n", ld_name);
+ /* we can return now... */
+ return;
+ }
+ /* alignment */
+ if(align > 1) {
+ obstack_printf(obst, ".balign\t%d\n", align);
+ }
+
+ obstack_printf(obst, "%s:\n", ld_name);
+
+ if (variability == variability_uninitialized) {
+ obstack_printf(obst, "\t.zero %d\n", get_type_size_bytes(type));
+ } else if (is_atomic_type(type)) {
+ dump_atomic_init(obst, get_atomic_ent_value(ent));
+ } else if (ent_is_string_const(ent)) {
+ dump_string_cst(obst, ent);
+ } else if (is_Array_type(type)) {
+ dump_array_init(obst, ent);
+ } else if (is_compound_type(type)) {
+ dump_compound_init(obst, ent);
+ } else
+ assert(0 && "unsupported type");
}
-/*
+/**
* Dumps declarations of global variables and the initialization code.
*/
-void ia32_dump_globals(struct obstack *rdata_obstack, struct obstack *data_obstack, struct obstack *comm_obstack)
+static void ia32_dump_globals(ir_type *gt, ia32_decl_env_t *env)
{
- ir_type *gt = get_glob_type();
- int i, n = get_class_n_members(gt);
+ int i, n = get_compound_n_members(gt);
- for (i = 0; i < n; i++)
- dump_global(rdata_obstack, data_obstack, comm_obstack, get_class_member(gt, i));
+ for (i = 0; i < n; i++) {
+ ir_entity *ent = get_compound_member(gt, i);
+ dump_global(env, ent);
+ }
}
/************************************************************************/
-void ia32_gen_decls(FILE *out) {
- struct obstack rodata, data, comm;
- int size;
- char *cp;
-
- obstack_init(&rodata);
- obstack_init(&data);
- obstack_init(&comm);
-
- fprintf(out, "\t.intel_syntax\n");
-
- ia32_dump_globals(&rodata, &data, &comm);
-
- size = obstack_object_size(&data);
- cp = obstack_finish(&data);
- if (size > 0) {
- fprintf(out, "\t.data\n");
- fwrite(cp, 1, size, out);
- }
-
- size = obstack_object_size(&rodata);
- cp = obstack_finish(&rodata);
- if (size > 0) {
- fprintf(out, "\t.section\t.rodata\n");
- fwrite(cp, 1, size, out);
- }
-
- size = obstack_object_size(&comm);
- cp = obstack_finish(&comm);
- if (size > 0) {
- fprintf(out, "\t.common\n");
- fwrite(cp, 1, size, out);
- }
-
- obstack_free(&rodata, NULL);
- obstack_free(&data, NULL);
- obstack_free(&comm, NULL);
+void ia32_gen_decls(FILE *out, const be_main_env_t *main_env) {
+ ia32_decl_env_t env;
+ obstack_t rodata, data, bss, ctor;
+ int size;
+ char *cp;
+
+ /* dump the global type */
+ obstack_init(&rodata);
+ obstack_init(&data);
+ obstack_init(&bss);
+
+ if (main_env->options->opt_profile)
+ obstack_init(&ctor);
+
+ env.rodata_obst = &rodata;
+ env.data_obst = &data;
+ env.bss_obst = &bss;
+ env.ctor_obst = main_env->options->opt_profile ? &ctor : NULL;
+ env.main_env = main_env;
+
+ ia32_dump_globals(get_glob_type(), &env);
+
+ size = obstack_object_size(&data);
+ cp = obstack_finish(&data);
+ if (size > 0) {
+ ia32_switch_section(out, SECTION_DATA);
+ fwrite(cp, 1, size, out);
+ }
+
+ size = obstack_object_size(&rodata);
+ cp = obstack_finish(&rodata);
+ if (size > 0) {
+ ia32_switch_section(out, SECTION_RODATA);
+ fwrite(cp, 1, size, out);
+ }
+
+ size = obstack_object_size(&bss);
+ cp = obstack_finish(&bss);
+ if (size > 0) {
+ ia32_switch_section(out, SECTION_COMMON);
+ fwrite(cp, 1, size, out);
+ }
+
+ if (main_env->options->opt_profile) {
+ size = obstack_object_size(&ctor);
+ cp = obstack_finish(&ctor);
+ if (size > 0) {
+ ia32_switch_section(out, SECTION_CTOR);
+ fwrite(cp, 1, size, out);
+ }
+ obstack_free(&ctor, NULL);
+ }
+
+ obstack_free(&rodata, NULL);
+ obstack_free(&data, NULL);
+ obstack_free(&bss, NULL);
+
+ /* dump the Thread Local Storage */
+ obstack_init(&data);
+
+ env.rodata_obst = &data;
+ env.data_obst = &data;
+ env.bss_obst = &data;
+ env.ctor_obst = NULL;
+
+ ia32_dump_globals(get_tls_type(), &env);
+
+ size = obstack_object_size(&data);
+ cp = obstack_finish(&data);
+ if (size > 0) {
+ ia32_switch_section(out, SECTION_TLS);
+ fprintf(out, ".balign\t%d\n", 32);
+ fwrite(cp, 1, size, out);
+ }
+
+ obstack_free(&data, NULL);
}
projects / libfirm / blobdiff