1 /* dw2gencfi.c - Support for generating Dwarf2 CFI information.
2 Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
3 Contributed by Michal Ludvig <mludvig@suse.cz>
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 #include "dw2gencfi.h"
26 /* We re-use DWARF2_LINE_MIN_INSN_LENGTH for the code alignment field
27 of the CIE. Default to 1 if not otherwise specified. */
28 #ifndef DWARF2_LINE_MIN_INSN_LENGTH
29 # define DWARF2_LINE_MIN_INSN_LENGTH 1
32 /* If TARGET_USE_CFIPOP is defined, it is required that the target
33 provide the following definitions. Otherwise provide them to
34 allow compilation to continue. */
35 #ifndef TARGET_USE_CFIPOP
36 # ifndef DWARF2_DEFAULT_RETURN_COLUMN
37 # define DWARF2_DEFAULT_RETURN_COLUMN 0
39 # ifndef DWARF2_CIE_DATA_ALIGNMENT
40 # define DWARF2_CIE_DATA_ALIGNMENT 1
44 #ifndef EH_FRAME_ALIGNMENT
45 # define EH_FRAME_ALIGNMENT (bfd_get_arch_size (stdoutput) == 64 ? 3 : 2)
48 #ifndef tc_cfi_frame_initial_instructions
49 # define tc_cfi_frame_initial_instructions() ((void)0)
55 struct cfi_insn_data *next;
76 struct cfi_escape_data {
77 struct cfi_escape_data *next;
85 struct fde_entry *next;
86 symbolS *start_address;
88 struct cfi_insn_data *data;
89 struct cfi_insn_data **last;
90 unsigned int return_column;
95 struct cie_entry *next;
96 symbolS *start_address;
97 unsigned int return_column;
98 struct cfi_insn_data *first, *last;
102 /* Current open FDE entry. */
103 static struct fde_entry *cur_fde_data;
104 static symbolS *last_address;
105 static offsetT cur_cfa_offset;
107 /* List of FDE entries. */
108 static struct fde_entry *all_fde_data;
109 static struct fde_entry **last_fde_data = &all_fde_data;
111 /* List of CIEs so that they could be reused. */
112 static struct cie_entry *cie_root;
114 /* Stack of old CFI data, for save/restore. */
117 struct cfa_save_data *next;
121 static struct cfa_save_data *cfa_save_stack;
123 /* Construct a new FDE structure and add it to the end of the fde list. */
125 static struct fde_entry *
126 alloc_fde_entry (void)
128 struct fde_entry *fde = xcalloc (1, sizeof (struct fde_entry));
131 *last_fde_data = fde;
132 last_fde_data = &fde->next;
134 fde->last = &fde->data;
135 fde->return_column = DWARF2_DEFAULT_RETURN_COLUMN;
140 /* The following functions are available for a backend to construct its
141 own unwind information, usually from legacy unwind directives. */
143 /* Construct a new INSN structure and add it to the end of the insn list
144 for the currently active FDE. */
146 static struct cfi_insn_data *
147 alloc_cfi_insn_data (void)
149 struct cfi_insn_data *insn = xcalloc (1, sizeof (struct cfi_insn_data));
151 *cur_fde_data->last = insn;
152 cur_fde_data->last = &insn->next;
157 /* Construct a new FDE structure that begins at LABEL. */
160 cfi_new_fde (symbolS *label)
162 struct fde_entry *fde = alloc_fde_entry ();
163 fde->start_address = label;
164 last_address = label;
167 /* End the currently open FDE. */
170 cfi_end_fde (symbolS *label)
172 cur_fde_data->end_address = label;
176 /* Set the return column for the current FDE. */
179 cfi_set_return_column (unsigned regno)
181 cur_fde_data->return_column = regno;
184 /* Universal functions to store new instructions. */
187 cfi_add_CFA_insn(int insn)
189 struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
191 insn_ptr->insn = insn;
195 cfi_add_CFA_insn_reg (int insn, unsigned regno)
197 struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
199 insn_ptr->insn = insn;
200 insn_ptr->u.r = regno;
204 cfi_add_CFA_insn_offset (int insn, offsetT offset)
206 struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
208 insn_ptr->insn = insn;
209 insn_ptr->u.i = offset;
213 cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2)
215 struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
217 insn_ptr->insn = insn;
218 insn_ptr->u.rr.reg1 = reg1;
219 insn_ptr->u.rr.reg2 = reg2;
223 cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset)
225 struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
227 insn_ptr->insn = insn;
228 insn_ptr->u.ri.reg = regno;
229 insn_ptr->u.ri.offset = offset;
232 /* Add a CFI insn to advance the PC from the last address to LABEL. */
235 cfi_add_advance_loc (symbolS *label)
237 struct cfi_insn_data *insn = alloc_cfi_insn_data ();
239 insn->insn = DW_CFA_advance_loc;
240 insn->u.ll.lab1 = last_address;
241 insn->u.ll.lab2 = label;
243 last_address = label;
246 /* Add a DW_CFA_offset record to the CFI data. */
249 cfi_add_CFA_offset (unsigned regno, offsetT offset)
251 unsigned int abs_data_align;
253 cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset);
255 abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0
256 ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT);
257 if (offset % abs_data_align)
258 as_bad (_("register save offset not a multiple of %u"), abs_data_align);
261 /* Add a DW_CFA_def_cfa record to the CFI data. */
264 cfi_add_CFA_def_cfa (unsigned regno, offsetT offset)
266 cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset);
267 cur_cfa_offset = offset;
270 /* Add a DW_CFA_register record to the CFI data. */
273 cfi_add_CFA_register (unsigned reg1, unsigned reg2)
275 cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2);
278 /* Add a DW_CFA_def_cfa_register record to the CFI data. */
281 cfi_add_CFA_def_cfa_register (unsigned regno)
283 cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno);
286 /* Add a DW_CFA_def_cfa_offset record to the CFI data. */
289 cfi_add_CFA_def_cfa_offset (offsetT offset)
291 cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset);
292 cur_cfa_offset = offset;
296 cfi_add_CFA_restore (unsigned regno)
298 cfi_add_CFA_insn_reg (DW_CFA_restore, regno);
302 cfi_add_CFA_undefined (unsigned regno)
304 cfi_add_CFA_insn_reg (DW_CFA_undefined, regno);
308 cfi_add_CFA_same_value (unsigned regno)
310 cfi_add_CFA_insn_reg (DW_CFA_same_value, regno);
314 cfi_add_CFA_remember_state (void)
316 struct cfa_save_data *p;
318 cfi_add_CFA_insn (DW_CFA_remember_state);
320 p = xmalloc (sizeof (*p));
321 p->cfa_offset = cur_cfa_offset;
322 p->next = cfa_save_stack;
327 cfi_add_CFA_restore_state (void)
329 struct cfa_save_data *p;
331 cfi_add_CFA_insn (DW_CFA_restore_state);
336 cur_cfa_offset = p->cfa_offset;
337 cfa_save_stack = p->next;
341 as_bad (_("CFI state restore without previous remember"));
345 /* Parse CFI assembler directives. */
347 static void dot_cfi (int);
348 static void dot_cfi_escape (int);
349 static void dot_cfi_startproc (int);
350 static void dot_cfi_endproc (int);
352 /* Fake CFI type; outside the byte range of any real CFI insn. */
353 #define CFI_adjust_cfa_offset 0x100
354 #define CFI_return_column 0x101
355 #define CFI_rel_offset 0x102
356 #define CFI_escape 0x103
358 const pseudo_typeS cfi_pseudo_table[] =
360 { "cfi_startproc", dot_cfi_startproc, 0 },
361 { "cfi_endproc", dot_cfi_endproc, 0 },
362 { "cfi_def_cfa", dot_cfi, DW_CFA_def_cfa },
363 { "cfi_def_cfa_register", dot_cfi, DW_CFA_def_cfa_register },
364 { "cfi_def_cfa_offset", dot_cfi, DW_CFA_def_cfa_offset },
365 { "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset },
366 { "cfi_offset", dot_cfi, DW_CFA_offset },
367 { "cfi_rel_offset", dot_cfi, CFI_rel_offset },
368 { "cfi_register", dot_cfi, DW_CFA_register },
369 { "cfi_return_column", dot_cfi, CFI_return_column },
370 { "cfi_restore", dot_cfi, DW_CFA_restore },
371 { "cfi_undefined", dot_cfi, DW_CFA_undefined },
372 { "cfi_same_value", dot_cfi, DW_CFA_same_value },
373 { "cfi_remember_state", dot_cfi, DW_CFA_remember_state },
374 { "cfi_restore_state", dot_cfi, DW_CFA_restore_state },
375 { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save },
376 { "cfi_escape", dot_cfi_escape, 0 },
381 cfi_parse_separator (void)
384 if (*input_line_pointer == ',')
385 input_line_pointer++;
387 as_bad (_("missing separator"));
396 #ifdef tc_regname_to_dw2regnum
398 if (is_name_beginner (*input_line_pointer)
399 || (*input_line_pointer == '%'
400 && is_name_beginner (*++input_line_pointer)))
404 name = input_line_pointer;
405 c = get_symbol_end ();
407 if ((regno = tc_regname_to_dw2regnum (name)) < 0)
409 as_bad (_("bad register expression"));
413 *input_line_pointer = c;
423 regno = exp.X_add_number;
427 as_bad (_("bad register expression"));
436 cfi_parse_const (void)
438 return get_absolute_expression ();
449 as_bad (_("CFI instruction used without previous .cfi_startproc"));
453 /* If the last address was not at the current PC, advance to current. */
454 if (symbol_get_frag (last_address) != frag_now
455 || S_GET_VALUE (last_address) != frag_now_fix ())
456 cfi_add_advance_loc (symbol_temp_new_now ());
461 reg1 = cfi_parse_reg ();
462 cfi_parse_separator ();
463 offset = cfi_parse_const ();
464 cfi_add_CFA_offset (reg1, offset);
468 reg1 = cfi_parse_reg ();
469 cfi_parse_separator ();
470 offset = cfi_parse_const ();
471 cfi_add_CFA_offset (reg1, offset - cur_cfa_offset);
475 reg1 = cfi_parse_reg ();
476 cfi_parse_separator ();
477 offset = cfi_parse_const ();
478 cfi_add_CFA_def_cfa (reg1, offset);
481 case DW_CFA_register:
482 reg1 = cfi_parse_reg ();
483 cfi_parse_separator ();
484 reg2 = cfi_parse_reg ();
485 cfi_add_CFA_register (reg1, reg2);
488 case DW_CFA_def_cfa_register:
489 reg1 = cfi_parse_reg ();
490 cfi_add_CFA_def_cfa_register (reg1);
493 case DW_CFA_def_cfa_offset:
494 offset = cfi_parse_const ();
495 cfi_add_CFA_def_cfa_offset (offset);
498 case CFI_adjust_cfa_offset:
499 offset = cfi_parse_const ();
500 cfi_add_CFA_def_cfa_offset (cur_cfa_offset + offset);
504 reg1 = cfi_parse_reg ();
505 cfi_add_CFA_restore (reg1);
508 case DW_CFA_undefined:
509 reg1 = cfi_parse_reg ();
510 cfi_add_CFA_undefined (reg1);
513 case DW_CFA_same_value:
514 reg1 = cfi_parse_reg ();
515 cfi_add_CFA_same_value (reg1);
518 case CFI_return_column:
519 reg1 = cfi_parse_reg ();
520 cfi_set_return_column (reg1);
523 case DW_CFA_remember_state:
524 cfi_add_CFA_remember_state ();
527 case DW_CFA_restore_state:
528 cfi_add_CFA_restore_state ();
531 case DW_CFA_GNU_window_save:
532 cfi_add_CFA_insn (DW_CFA_GNU_window_save);
539 demand_empty_rest_of_line ();
543 dot_cfi_escape (int ignored ATTRIBUTE_UNUSED)
545 struct cfi_escape_data *head, **tail, *e;
546 struct cfi_insn_data *insn;
550 as_bad (_("CFI instruction used without previous .cfi_startproc"));
554 /* If the last address was not at the current PC, advance to current. */
555 if (symbol_get_frag (last_address) != frag_now
556 || S_GET_VALUE (last_address) != frag_now_fix ())
557 cfi_add_advance_loc (symbol_temp_new_now ());
562 e = xmalloc (sizeof (*e));
563 do_parse_cons_expression (&e->exp, 1);
567 while (*input_line_pointer++ == ',');
570 insn = alloc_cfi_insn_data ();
571 insn->insn = CFI_escape;
576 dot_cfi_startproc (int ignored ATTRIBUTE_UNUSED)
582 as_bad (_("previous CFI entry not closed (missing .cfi_endproc)"));
586 cfi_new_fde (symbol_temp_new_now ());
589 if (is_name_beginner (*input_line_pointer))
593 name = input_line_pointer;
594 c = get_symbol_end ();
596 if (strcmp (name, "simple") == 0)
599 *input_line_pointer = c;
602 input_line_pointer = name;
604 demand_empty_rest_of_line ();
608 tc_cfi_frame_initial_instructions ();
612 dot_cfi_endproc (int ignored ATTRIBUTE_UNUSED)
616 as_bad (_(".cfi_endproc without corresponding .cfi_startproc"));
620 cfi_end_fde (symbol_temp_new_now ());
624 /* Emit a single byte into the current segment. */
629 FRAG_APPEND_1_CHAR (byte);
632 /* Emit a two-byte word into the current segment. */
637 md_number_to_chars (frag_more (2), data, 2);
640 /* Emit a four byte word into the current segment. */
645 md_number_to_chars (frag_more (4), data, 4);
648 /* Emit an unsigned "little-endian base 128" number. */
651 out_uleb128 (addressT value)
653 output_leb128 (frag_more (sizeof_leb128 (value, 0)), value, 0);
656 /* Emit an unsigned "little-endian base 128" number. */
659 out_sleb128 (offsetT value)
661 output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1);
665 output_cfi_insn (struct cfi_insn_data *insn)
672 case DW_CFA_advance_loc:
674 symbolS *from = insn->u.ll.lab1;
675 symbolS *to = insn->u.ll.lab2;
677 if (symbol_get_frag (to) == symbol_get_frag (from))
679 addressT delta = S_GET_VALUE (to) - S_GET_VALUE (from);
680 addressT scaled = delta / DWARF2_LINE_MIN_INSN_LENGTH;
683 out_one (DW_CFA_advance_loc + scaled);
684 else if (delta <= 0xFF)
686 out_one (DW_CFA_advance_loc1);
689 else if (delta <= 0xFFFF)
691 out_one (DW_CFA_advance_loc2);
696 out_one (DW_CFA_advance_loc4);
704 exp.X_op = O_subtract;
705 exp.X_add_symbol = to;
706 exp.X_op_symbol = from;
707 exp.X_add_number = 0;
709 /* The code in ehopt.c expects that one byte of the encoding
710 is already allocated to the frag. This comes from the way
711 that it scans the .eh_frame section looking first for the
712 .byte DW_CFA_advance_loc4. */
715 frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3,
716 make_expr_symbol (&exp), frag_now_fix () - 1,
723 offset = insn->u.ri.offset;
726 out_one (DW_CFA_def_cfa_sf);
727 out_uleb128 (insn->u.ri.reg);
728 out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT);
732 out_one (DW_CFA_def_cfa);
733 out_uleb128 (insn->u.ri.reg);
734 out_uleb128 (offset);
738 case DW_CFA_def_cfa_register:
739 case DW_CFA_undefined:
740 case DW_CFA_same_value:
741 out_one (insn->insn);
742 out_uleb128 (insn->u.r);
745 case DW_CFA_def_cfa_offset:
749 out_one (DW_CFA_def_cfa_offset_sf);
750 out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT);
754 out_one (DW_CFA_def_cfa_offset);
755 out_uleb128 (offset);
763 out_one (DW_CFA_restore + regno);
767 out_one (DW_CFA_restore_extended);
773 regno = insn->u.ri.reg;
774 offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT;
777 out_one (DW_CFA_offset_extended_sf);
779 out_sleb128 (offset);
781 else if (regno <= 0x3F)
783 out_one (DW_CFA_offset + regno);
784 out_uleb128 (offset);
788 out_one (DW_CFA_offset_extended);
790 out_uleb128 (offset);
794 case DW_CFA_register:
795 out_one (DW_CFA_register);
796 out_uleb128 (insn->u.rr.reg1);
797 out_uleb128 (insn->u.rr.reg2);
800 case DW_CFA_remember_state:
801 case DW_CFA_restore_state:
802 out_one (insn->insn);
805 case DW_CFA_GNU_window_save:
806 out_one (DW_CFA_GNU_window_save);
811 struct cfi_escape_data *e;
812 for (e = insn->u.esc; e ; e = e->next)
813 emit_expr (&e->exp, 1);
823 output_cie (struct cie_entry *cie)
825 symbolS *after_size_address, *end_address;
827 struct cfi_insn_data *i;
829 cie->start_address = symbol_temp_new_now ();
830 after_size_address = symbol_temp_make ();
831 end_address = symbol_temp_make ();
833 exp.X_op = O_subtract;
834 exp.X_add_symbol = end_address;
835 exp.X_op_symbol = after_size_address;
836 exp.X_add_number = 0;
838 emit_expr (&exp, 4); /* Length. */
839 symbol_set_value_now (after_size_address);
840 out_four (0); /* CIE id. */
841 out_one (DW_CIE_VERSION); /* Version. */
842 out_one ('z'); /* Augmentation. */
845 out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */
846 out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */
847 if (DW_CIE_VERSION == 1) /* Return column. */
848 out_one (cie->return_column);
850 out_uleb128 (cie->return_column);
851 out_uleb128 (1); /* Augmentation size. */
852 #if defined DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr
853 out_one (DW_EH_PE_pcrel | DW_EH_PE_sdata4);
855 out_one (DW_EH_PE_sdata4);
859 for (i = cie->first; i != cie->last; i = i->next)
862 frag_align (2, DW_CFA_nop, 0);
863 symbol_set_value_now (end_address);
867 output_fde (struct fde_entry *fde, struct cie_entry *cie,
868 struct cfi_insn_data *first, int align)
870 symbolS *after_size_address, *end_address;
873 after_size_address = symbol_temp_make ();
874 end_address = symbol_temp_make ();
876 exp.X_op = O_subtract;
877 exp.X_add_symbol = end_address;
878 exp.X_op_symbol = after_size_address;
879 exp.X_add_number = 0;
880 emit_expr (&exp, 4); /* Length. */
881 symbol_set_value_now (after_size_address);
883 exp.X_add_symbol = after_size_address;
884 exp.X_op_symbol = cie->start_address;
885 emit_expr (&exp, 4); /* CIE offset. */
888 exp.X_add_symbol = fde->start_address;
889 exp.X_op_symbol = symbol_temp_new_now ();
890 emit_expr (&exp, 4); /* Code offset. */
893 exp.X_add_symbol = fde->start_address;
894 exp.X_op_symbol = NULL;
895 #ifdef tc_cfi_emit_pcrel_expr
896 tc_cfi_emit_pcrel_expr (&exp, 4); /* Code offset. */
898 emit_expr (&exp, 4); /* Code offset. */
900 exp.X_op = O_subtract;
903 exp.X_add_symbol = fde->end_address;
904 exp.X_op_symbol = fde->start_address; /* Code length. */
907 out_uleb128 (0); /* Augmentation size. */
909 for (; first; first = first->next)
910 output_cfi_insn (first);
912 frag_align (align, DW_CFA_nop, 0);
913 symbol_set_value_now (end_address);
916 static struct cie_entry *
917 select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst)
919 struct cfi_insn_data *i, *j;
920 struct cie_entry *cie;
922 for (cie = cie_root; cie; cie = cie->next)
924 if (cie->return_column != fde->return_column)
926 for (i = cie->first, j = fde->data;
927 i != cie->last && j != NULL;
928 i = i->next, j = j->next)
930 if (i->insn != j->insn)
934 case DW_CFA_advance_loc:
935 case DW_CFA_remember_state:
936 /* We reached the first advance/remember in the FDE,
937 but did not reach the end of the CIE list. */
942 if (i->u.ri.reg != j->u.ri.reg)
944 if (i->u.ri.offset != j->u.ri.offset)
948 case DW_CFA_register:
949 if (i->u.rr.reg1 != j->u.rr.reg1)
951 if (i->u.rr.reg2 != j->u.rr.reg2)
955 case DW_CFA_def_cfa_register:
957 case DW_CFA_undefined:
958 case DW_CFA_same_value:
959 if (i->u.r != j->u.r)
963 case DW_CFA_def_cfa_offset:
964 if (i->u.i != j->u.i)
969 /* Don't bother matching these for now. */
977 /* Success if we reached the end of the CIE list, and we've either
978 run out of FDE entries or we've encountered an advance,
979 remember, or escape. */
982 || j->insn == DW_CFA_advance_loc
983 || j->insn == DW_CFA_remember_state
984 || j->insn == CFI_escape))
993 cie = xmalloc (sizeof (struct cie_entry));
994 cie->next = cie_root;
996 cie->return_column = fde->return_column;
997 cie->first = fde->data;
999 for (i = cie->first; i ; i = i->next)
1000 if (i->insn == DW_CFA_advance_loc
1001 || i->insn == DW_CFA_remember_state
1002 || i->insn == CFI_escape)
1017 struct fde_entry *fde;
1018 int save_flag_traditional_format;
1022 as_bad (_("open CFI at the end of file; missing .cfi_endproc directive"));
1023 cur_fde_data->end_address = cur_fde_data->start_address;
1026 if (all_fde_data == 0)
1029 /* Open .eh_frame section. */
1030 cfi_seg = subseg_new (".eh_frame", 0);
1031 bfd_set_section_flags (stdoutput, cfi_seg,
1032 SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY);
1033 subseg_set (cfi_seg, 0);
1034 record_alignment (cfi_seg, EH_FRAME_ALIGNMENT);
1036 /* Make sure check_eh_frame doesn't do anything with our output. */
1037 save_flag_traditional_format = flag_traditional_format;
1038 flag_traditional_format = 1;
1040 for (fde = all_fde_data; fde ; fde = fde->next)
1042 struct cfi_insn_data *first;
1043 struct cie_entry *cie;
1045 cie = select_cie_for_fde (fde, &first);
1046 output_fde (fde, cie, first, fde->next == NULL ? EH_FRAME_ALIGNMENT : 2);
1049 flag_traditional_format = save_flag_traditional_format;