1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "../bfd/libhppa.h"
31 #include "../bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".hppa_unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
56 #define obj_version obj_elf_version
58 /* Use space aliases. */
61 /* Some local functions only used by ELF. */
62 static void pa_build_symextn_section
PARAMS ((void));
63 static void hppa_tc_make_symextn_section
PARAMS ((void));
67 /* Names of various debugging spaces/subspaces. */
68 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
69 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
70 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
71 #define UNWIND_SECTION_NAME "$UNWIND$"
73 /* Object file formats specify relocation types. */
74 typedef int reloc_type
;
77 #define obj_version obj_som_version
79 /* Do not use space aliases. */
82 /* How to generate a relocation. */
83 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
85 /* Object file formats specify BFD symbol types. */
86 typedef som_symbol_type obj_symbol_type
;
89 /* Various structures and types used internally in tc-hppa.c. */
91 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
95 unsigned int cannot_unwind
:1;
96 unsigned int millicode
:1;
97 unsigned int millicode_save_rest
:1;
98 unsigned int region_desc
:2;
99 unsigned int save_sr
:2;
100 unsigned int entry_fr
:4;
101 unsigned int entry_gr
:5;
102 unsigned int args_stored
:1;
103 unsigned int call_fr
:5;
104 unsigned int call_gr
:5;
105 unsigned int save_sp
:1;
106 unsigned int save_rp
:1;
107 unsigned int save_rp_in_frame
:1;
108 unsigned int extn_ptr_defined
:1;
109 unsigned int cleanup_defined
:1;
111 unsigned int hpe_interrupt_marker
:1;
112 unsigned int hpux_interrupt_marker
:1;
113 unsigned int reserved
:3;
114 unsigned int frame_size
:27;
119 /* Starting and ending offsets of the region described by
121 unsigned int start_offset
;
122 unsigned int end_offset
;
123 struct unwind_desc descriptor
;
126 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
127 control the entry and exit code they generate. It is also used in
128 creation of the correct stack unwind descriptors.
130 NOTE: GAS does not support .enter and .leave for the generation of
131 prologues and epilogues. FIXME.
133 The fields in structure roughly correspond to the arguments available on the
134 .callinfo pseudo-op. */
138 /* Should sr3 be saved in the prologue? */
141 /* Does this function make calls? */
144 /* The unwind descriptor being built. */
145 struct unwind_table ci_unwind
;
147 /* Name of this function. */
148 symbolS
*start_symbol
;
150 /* (temporary) symbol used to mark the end of this function. */
153 /* frags associated with start and end of this function. */
157 /* frags for starting/ending offset of this descriptor. */
158 fragS
*start_offset_frag
;
159 fragS
*end_offset_frag
;
161 /* The location within {start,end}_offset_frag to find the
162 {start,end}_offset. */
163 int start_frag_where
;
166 /* Fixups (relocations) for start_offset and end_offset. */
170 /* Next entry in the chain. */
171 struct call_info
*ci_next
;
174 /* Operand formats for FP instructions. Note not all FP instructions
175 allow all four formats to be used (for example fmpysub only allows
179 SGL
, DBL
, ILLEGAL_FMT
, QUAD
183 /* This fully describes the symbol types which may be attached to
184 an EXPORT or IMPORT directive. Only SOM uses this formation
185 (ELF has no need for it). */
189 SYMBOL_TYPE_ABSOLUTE
,
193 SYMBOL_TYPE_MILLICODE
,
195 SYMBOL_TYPE_PRI_PROG
,
196 SYMBOL_TYPE_SEC_PROG
,
200 /* This structure contains information needed to assemble
201 individual instructions. */
204 /* Holds the opcode after parsing by pa_ip. */
205 unsigned long opcode
;
207 /* Holds an expression associated with the current instruction. */
210 /* Does this instruction use PC-relative addressing. */
213 /* Floating point formats for operand1 and operand2. */
214 fp_operand_format fpof1
;
215 fp_operand_format fpof2
;
217 /* Holds the field selector for this instruction
218 (for example L%, LR%, etc). */
221 /* Holds any argument relocation bits associated with this
222 instruction. (instruction should be some sort of call). */
225 /* The format specification for this instruction. */
228 /* The relocation (if any) associated with this instruction. */
232 /* PA-89 floating point registers are arranged like this:
235 +--------------+--------------+
236 | 0 or 16L | 16 or 16R |
237 +--------------+--------------+
238 | 1 or 17L | 17 or 17R |
239 +--------------+--------------+
247 +--------------+--------------+
248 | 14 or 30L | 30 or 30R |
249 +--------------+--------------+
250 | 15 or 31L | 31 or 31R |
251 +--------------+--------------+
254 The following is a version of pa_parse_number that
255 handles the L/R notation and returns the correct
256 value to put into the instruction register field.
257 The correct value to put into the instruction is
258 encoded in the structure 'pa_89_fp_reg_struct'. */
260 struct pa_89_fp_reg_struct
262 /* The register number. */
269 /* Additional information needed to build argument relocation stubs. */
272 /* The argument relocation specification. */
273 unsigned int arg_reloc
;
275 /* Number of arguments. */
276 unsigned int arg_count
;
279 /* This structure defines an entry in the subspace dictionary
282 struct subspace_dictionary_chain
284 /* Index of containing space. */
285 unsigned long ssd_space_index
;
287 /* Nonzero if this space has been defined by the user code. */
288 unsigned int ssd_defined
;
290 /* Which quadrant within the space this subspace should be loaded into. */
291 unsigned char ssd_quadrant
;
293 /* Alignment (in bytes) for this subspace. */
294 unsigned long ssd_alignment
;
296 /* Access control bits to determine read/write/execute permissions
297 as well as gateway privilege promotions. */
298 unsigned char ssd_access_control_bits
;
300 /* A sorting key so that it is possible to specify ordering of
301 subspaces within a space. */
302 unsigned char ssd_sort_key
;
304 /* Nonzero of this space should be zero filled. */
305 unsigned long ssd_zero
;
307 /* Nonzero if this is a common subspace. */
308 unsigned char ssd_common
;
310 /* Nonzero if this is a common subspace which allows symbols to be
312 unsigned char ssd_dup_common
;
314 /* Nonzero if this subspace is loadable. Note loadable subspaces
315 must be contained within loadable spaces; unloadable subspaces
316 must be contained in unloadable spaces. */
317 unsigned char ssd_loadable
;
319 /* Nonzero if this subspace contains only code. */
320 unsigned char ssd_code_only
;
322 /* Starting offset of this subspace. */
323 unsigned long ssd_subspace_start
;
325 /* Length of this subspace. */
326 unsigned long ssd_subspace_length
;
328 /* Name of this subspace. */
331 /* GAS segment and subsegment associated with this subspace. */
335 /* Index of this subspace within the subspace dictionary of the object
336 file. Not used until object file is written. */
337 int object_file_index
;
339 /* The size of the last alignment request for this subspace. */
342 /* Next space in the subspace dictionary chain. */
343 struct subspace_dictionary_chain
*ssd_next
;
346 typedef struct subspace_dictionary_chain ssd_chain_struct
;
348 /* This structure defines an entry in the subspace dictionary
351 struct space_dictionary_chain
354 /* Holds the index into the string table of the name of this
356 unsigned int sd_name_index
;
358 /* Nonzero if the space is loadable. */
359 unsigned int sd_loadable
;
361 /* Nonzero if this space has been defined by the user code or
362 as a default space. */
363 unsigned int sd_defined
;
365 /* Nonzero if this spaces has been defined by the user code. */
366 unsigned int sd_user_defined
;
368 /* Nonzero if this space is not sharable. */
369 unsigned int sd_private
;
371 /* The space number (or index). */
372 unsigned int sd_spnum
;
374 /* The sort key for this space. May be used to determine how to lay
375 out the spaces within the object file. */
376 unsigned char sd_sort_key
;
378 /* The name of this subspace. */
381 /* GAS segment to which this subspace corresponds. */
384 /* Current subsegment number being used. */
387 /* The chain of subspaces contained within this space. */
388 ssd_chain_struct
*sd_subspaces
;
390 /* The next entry in the space dictionary chain. */
391 struct space_dictionary_chain
*sd_next
;
394 typedef struct space_dictionary_chain sd_chain_struct
;
396 /* Structure for previous label tracking. Needed so that alignments,
397 callinfo declarations, etc can be easily attached to a particular
399 typedef struct label_symbol_struct
401 struct symbol
*lss_label
;
402 sd_chain_struct
*lss_space
;
403 struct label_symbol_struct
*lss_next
;
407 /* This structure defines attributes of the default subspace
408 dictionary entries. */
410 struct default_subspace_dict
412 /* Name of the subspace. */
415 /* FIXME. Is this still needed? */
418 /* Nonzero if this subspace is loadable. */
421 /* Nonzero if this subspace contains only code. */
424 /* Nonzero if this is a common subspace. */
427 /* Nonzero if this is a common subspace which allows symbols
428 to be multiply defined. */
431 /* Nonzero if this subspace should be zero filled. */
434 /* Sort key for this subspace. */
437 /* Access control bits for this subspace. Can represent RWX access
438 as well as privilege level changes for gateways. */
441 /* Index of containing space. */
444 /* Alignment (in bytes) of this subspace. */
447 /* Quadrant within space where this subspace should be loaded. */
450 /* An index into the default spaces array. */
453 /* An alias for this section (or NULL if no alias exists). */
456 /* Subsegment associated with this subspace. */
460 /* This structure defines attributes of the default space
461 dictionary entries. */
463 struct default_space_dict
465 /* Name of the space. */
468 /* Space number. It is possible to identify spaces within
469 assembly code numerically! */
472 /* Nonzero if this space is loadable. */
475 /* Nonzero if this space is "defined". FIXME is still needed */
478 /* Nonzero if this space can not be shared. */
481 /* Sort key for this space. */
484 /* Segment associated with this space. */
487 /* An alias for this section (or NULL if no alias exists). */
491 /* Extra information needed to perform fixups (relocations) on the PA. */
492 struct hppa_fix_struct
494 /* The field selector. */
495 enum hppa_reloc_field_selector_type fx_r_field
;
500 /* Format of fixup. */
503 /* Argument relocation bits. */
506 /* The unwind descriptor associated with this fixup. */
510 /* Structure to hold information about predefined registers. */
518 /* This structure defines the mapping from a FP condition string
519 to a condition number which can be recorded in an instruction. */
526 /* This structure defines a mapping from a field selector
527 string to a field selector type. */
528 struct selector_entry
534 /* Prototypes for functions local to tc-hppa.c. */
536 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
537 static void pa_cons
PARAMS ((int));
538 static void pa_data
PARAMS ((int));
539 static void pa_desc
PARAMS ((int));
540 static void pa_float_cons
PARAMS ((int));
541 static void pa_fill
PARAMS ((int));
542 static void pa_lcomm
PARAMS ((int));
543 static void pa_lsym
PARAMS ((int));
544 static void pa_stringer
PARAMS ((int));
545 static void pa_text
PARAMS ((int));
546 static void pa_version
PARAMS ((int));
547 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
548 static int get_expression
PARAMS ((char *));
549 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
550 static int evaluate_absolute
PARAMS ((struct pa_it
*));
551 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
552 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
553 static int pa_parse_nullif
PARAMS ((char **));
554 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
555 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
556 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
557 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
558 static void pa_block
PARAMS ((int));
559 static void pa_call
PARAMS ((int));
560 static void pa_call_args
PARAMS ((struct call_desc
*));
561 static void pa_callinfo
PARAMS ((int));
562 static void pa_code
PARAMS ((int));
563 static void pa_comm
PARAMS ((int));
564 static void pa_copyright
PARAMS ((int));
565 static void pa_end
PARAMS ((int));
566 static void pa_enter
PARAMS ((int));
567 static void pa_entry
PARAMS ((int));
568 static void pa_equ
PARAMS ((int));
569 static void pa_exit
PARAMS ((int));
570 static void pa_export
PARAMS ((int));
571 static void pa_type_args
PARAMS ((symbolS
*, int));
572 static void pa_import
PARAMS ((int));
573 static void pa_label
PARAMS ((int));
574 static void pa_leave
PARAMS ((int));
575 static void pa_origin
PARAMS ((int));
576 static void pa_proc
PARAMS ((int));
577 static void pa_procend
PARAMS ((int));
578 static void pa_space
PARAMS ((int));
579 static void pa_spnum
PARAMS ((int));
580 static void pa_subspace
PARAMS ((int));
581 static void pa_param
PARAMS ((int));
582 static void pa_undefine_label
PARAMS ((void));
583 static int need_89_opcode
PARAMS ((struct pa_it
*,
584 struct pa_89_fp_reg_struct
*));
585 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
586 static label_symbol_struct
*pa_get_label
PARAMS ((void));
587 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, char,
590 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
595 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
596 char *, char, char, char,
597 char, char, char, int,
600 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
601 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
602 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
603 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
605 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
606 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
607 static void pa_ip
PARAMS ((char *));
608 static void fix_new_hppa
PARAMS ((fragS
*, int, short int, symbolS
*,
609 long, expressionS
*, int,
610 bfd_reloc_code_real_type
,
611 enum hppa_reloc_field_selector_type
,
613 static void md_apply_fix_1
PARAMS ((fixS
*, long));
614 static int is_end_of_statement
PARAMS ((void));
615 static int reg_name_search
PARAMS ((char *));
616 static int pa_chk_field_selector
PARAMS ((char **));
617 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
618 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
619 static void process_exit
PARAMS ((void));
620 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
621 static int log2
PARAMS ((int));
622 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
623 static unsigned int pa_stringer_aux
PARAMS ((char *));
624 static void pa_spaces_begin
PARAMS ((void));
625 static void hppa_elf_mark_end_of_function
PARAMS ((void));
627 /* File and gloally scoped variable declarations. */
629 /* Root and final entry in the space chain. */
630 static sd_chain_struct
*space_dict_root
;
631 static sd_chain_struct
*space_dict_last
;
633 /* The current space and subspace. */
634 static sd_chain_struct
*current_space
;
635 static ssd_chain_struct
*current_subspace
;
637 /* Root of the call_info chain. */
638 static struct call_info
*call_info_root
;
640 /* The last call_info (for functions) structure
641 seen so it can be associated with fixups and
643 static struct call_info
*last_call_info
;
645 /* The last call description (for actual calls). */
646 static struct call_desc last_call_desc
;
648 /* Relaxation isn't supported for the PA yet. */
649 const relax_typeS md_relax_table
[] =
652 /* Jumps are always the same size -- one instruction. */
653 int md_short_jump_size
= 4;
654 int md_long_jump_size
= 4;
656 /* handle of the OPCODE hash table */
657 static struct hash_control
*op_hash
= NULL
;
659 /* This array holds the chars that always start a comment. If the
660 pre-processor is disabled, these aren't very useful. */
661 const char comment_chars
[] = ";";
663 /* Table of pseudo ops for the PA. FIXME -- how many of these
664 are now redundant with the overall GAS and the object file
666 const pseudo_typeS md_pseudo_table
[] =
668 /* align pseudo-ops on the PA specify the actual alignment requested,
669 not the log2 of the requested alignment. */
670 {"align", s_align_bytes
, 8},
671 {"ALIGN", s_align_bytes
, 8},
672 {"block", pa_block
, 1},
673 {"BLOCK", pa_block
, 1},
674 {"blockz", pa_block
, 0},
675 {"BLOCKZ", pa_block
, 0},
676 {"byte", pa_cons
, 1},
677 {"BYTE", pa_cons
, 1},
678 {"call", pa_call
, 0},
679 {"CALL", pa_call
, 0},
680 {"callinfo", pa_callinfo
, 0},
681 {"CALLINFO", pa_callinfo
, 0},
682 {"code", pa_code
, 0},
683 {"CODE", pa_code
, 0},
684 {"comm", pa_comm
, 0},
685 {"COMM", pa_comm
, 0},
686 {"copyright", pa_copyright
, 0},
687 {"COPYRIGHT", pa_copyright
, 0},
688 {"data", pa_data
, 0},
689 {"DATA", pa_data
, 0},
690 {"desc", pa_desc
, 0},
691 {"DESC", pa_desc
, 0},
692 {"double", pa_float_cons
, 'd'},
693 {"DOUBLE", pa_float_cons
, 'd'},
696 {"enter", pa_enter
, 0},
697 {"ENTER", pa_enter
, 0},
698 {"entry", pa_entry
, 0},
699 {"ENTRY", pa_entry
, 0},
702 {"exit", pa_exit
, 0},
703 {"EXIT", pa_exit
, 0},
704 {"export", pa_export
, 0},
705 {"EXPORT", pa_export
, 0},
706 {"fill", pa_fill
, 0},
707 {"FILL", pa_fill
, 0},
708 {"float", pa_float_cons
, 'f'},
709 {"FLOAT", pa_float_cons
, 'f'},
710 {"half", pa_cons
, 2},
711 {"HALF", pa_cons
, 2},
712 {"import", pa_import
, 0},
713 {"IMPORT", pa_import
, 0},
716 {"label", pa_label
, 0},
717 {"LABEL", pa_label
, 0},
718 {"lcomm", pa_lcomm
, 0},
719 {"LCOMM", pa_lcomm
, 0},
720 {"leave", pa_leave
, 0},
721 {"LEAVE", pa_leave
, 0},
722 {"long", pa_cons
, 4},
723 {"LONG", pa_cons
, 4},
724 {"lsym", pa_lsym
, 0},
725 {"LSYM", pa_lsym
, 0},
726 {"octa", pa_cons
, 16},
727 {"OCTA", pa_cons
, 16},
728 {"org", pa_origin
, 0},
729 {"ORG", pa_origin
, 0},
730 {"origin", pa_origin
, 0},
731 {"ORIGIN", pa_origin
, 0},
732 {"param", pa_param
, 0},
733 {"PARAM", pa_param
, 0},
734 {"proc", pa_proc
, 0},
735 {"PROC", pa_proc
, 0},
736 {"procend", pa_procend
, 0},
737 {"PROCEND", pa_procend
, 0},
738 {"quad", pa_cons
, 8},
739 {"QUAD", pa_cons
, 8},
742 {"short", pa_cons
, 2},
743 {"SHORT", pa_cons
, 2},
744 {"single", pa_float_cons
, 'f'},
745 {"SINGLE", pa_float_cons
, 'f'},
746 {"space", pa_space
, 0},
747 {"SPACE", pa_space
, 0},
748 {"spnum", pa_spnum
, 0},
749 {"SPNUM", pa_spnum
, 0},
750 {"string", pa_stringer
, 0},
751 {"STRING", pa_stringer
, 0},
752 {"stringz", pa_stringer
, 1},
753 {"STRINGZ", pa_stringer
, 1},
754 {"subspa", pa_subspace
, 0},
755 {"SUBSPA", pa_subspace
, 0},
756 {"text", pa_text
, 0},
757 {"TEXT", pa_text
, 0},
758 {"version", pa_version
, 0},
759 {"VERSION", pa_version
, 0},
760 {"word", pa_cons
, 4},
761 {"WORD", pa_cons
, 4},
765 /* This array holds the chars that only start a comment at the beginning of
766 a line. If the line seems to have the form '# 123 filename'
767 .line and .file directives will appear in the pre-processed output.
769 Note that input_file.c hand checks for '#' at the beginning of the
770 first line of the input file. This is because the compiler outputs
771 #NO_APP at the beginning of its output.
773 Also note that '/*' will always start a comment. */
774 const char line_comment_chars
[] = "#";
776 /* This array holds the characters which act as line separators. */
777 const char line_separator_chars
[] = "!";
779 /* Chars that can be used to separate mant from exp in floating point nums. */
780 const char EXP_CHARS
[] = "eE";
782 /* Chars that mean this number is a floating point constant.
783 As in 0f12.456 or 0d1.2345e12.
785 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
786 changed in read.c. Ideally it shouldn't hae to know abou it at
787 all, but nothing is ideal around here. */
788 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
790 static struct pa_it the_insn
;
792 /* Points to the end of an expression just parsed by get_expressoin
793 and friends. FIXME. This shouldn't be handled with a file-global
795 static char *expr_end
;
797 /* Nonzero if a .callinfo appeared within the current procedure. */
798 static int callinfo_found
;
800 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
801 static int within_entry_exit
;
803 /* Nonzero if the assembler is currently within a procedure definition. */
804 static int within_procedure
;
806 /* Handle on strucutre which keep track of the last symbol
807 seen in each subspace. */
808 static label_symbol_struct
*label_symbols_rootp
= NULL
;
810 /* Holds the last field selector. */
811 static int hppa_field_selector
;
813 /* Nonzero if errors are to be printed. */
814 static int print_errors
= 1;
816 /* List of registers that are pre-defined:
818 Each general register has one predefined name of the form
819 %r<REGNUM> which has the value <REGNUM>.
821 Space and control registers are handled in a similar manner,
822 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
824 Likewise for the floating point registers, but of the form
825 %fr<REGNUM>. Floating point registers have additional predefined
826 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
827 again have the value <REGNUM>.
829 Many registers also have synonyms:
831 %r26 - %r23 have %arg0 - %arg3 as synonyms
832 %r28 - %r29 have %ret0 - %ret1 as synonyms
833 %r30 has %sp as a synonym
834 %r27 has %dp as a synonym
835 %r2 has %rp as a synonym
837 Almost every control register has a synonym; they are not listed
840 The table is sorted. Suitable for searching by a binary search. */
842 static const struct pd_reg pre_defined_registers
[] =
1054 /* This table is sorted by order of the length of the string. This is
1055 so we check for <> before we check for <. If we had a <> and checked
1056 for < first, we would get a false match. */
1057 static const struct fp_cond_map fp_cond_map
[] =
1093 static const struct selector_entry selector_table
[] =
1128 /* default space and subspace dictionaries */
1130 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1131 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1133 /* pre-defined subsegments (subspaces) for the HPPA. */
1134 #define SUBSEG_CODE 0
1135 #define SUBSEG_DATA 0
1136 #define SUBSEG_LIT 1
1137 #define SUBSEG_BSS 2
1138 #define SUBSEG_UNWIND 3
1139 #define SUBSEG_GDB_STRINGS 0
1140 #define SUBSEG_GDB_SYMBOLS 1
1142 static struct default_subspace_dict pa_def_subspaces
[] =
1144 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1145 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1146 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1147 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1149 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".hppa_unwind", SUBSEG_UNWIND
},
1151 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1154 static struct default_space_dict pa_def_spaces
[] =
1156 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1157 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1158 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1161 /* Misc local definitions used by the assembler. */
1163 /* Return nonzero if the string pointed to by S potentially represents
1164 a right or left half of a FP register */
1165 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1166 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1168 /* These macros are used to maintain spaces/subspaces. */
1169 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1170 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1171 #define SPACE_PRIVATE(space_chain) (space_chain)->sd_private
1172 #define SPACE_LOADABLE(space_chain) (space_chain)->sd_loadable
1173 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1174 #define SPACE_SORT(space_chain) (space_chain)->sd_sort_key
1175 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1176 #define SPACE_NAME_INDEX(space_chain) (space_chain)->sd_name_index
1178 #define SUBSPACE_SPACE_INDEX(ss_chain) (ss_chain)->ssd_space_index
1179 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1180 #define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_quadrant
1181 #define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_alignment
1182 #define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_access_control_bits
1183 #define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_sort_key
1184 #define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_common
1185 #define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
1186 #define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_dup_common
1187 #define SUBSPACE_CODE_ONLY(ss_chain) (ss_chain)->ssd_code_only
1188 #define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_loadable
1189 #define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_subspace_start
1190 #define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_subspace_length
1191 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1193 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1194 main loop after insertion. */
1196 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1198 ((OPCODE) |= (FIELD) << (START)); \
1202 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1203 IGNORE is used to suppress the error message. */
1205 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1207 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1210 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1216 #define is_DP_relative(exp) \
1217 ((exp).X_op == O_subtract \
1218 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1220 #define is_PC_relative(exp) \
1221 ((exp).X_op == O_subtract \
1222 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1224 #define is_complex(exp) \
1225 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1227 /* Actual functions to implement the PA specific code for the assembler. */
1229 /* Returns a pointer to the label_symbol_struct for the current space.
1230 or NULL if no label_symbol_struct exists for the current space. */
1232 static label_symbol_struct
*
1235 label_symbol_struct
*label_chain
;
1236 sd_chain_struct
*space_chain
= current_space
;
1238 for (label_chain
= label_symbols_rootp
;
1240 label_chain
= label_chain
->lss_next
)
1241 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1247 /* Defines a label for the current space. If one is already defined,
1248 this function will replace it with the new label. */
1251 pa_define_label (symbol
)
1254 label_symbol_struct
*label_chain
= pa_get_label ();
1255 sd_chain_struct
*space_chain
= current_space
;
1258 label_chain
->lss_label
= symbol
;
1261 /* Create a new label entry and add it to the head of the chain. */
1263 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1264 label_chain
->lss_label
= symbol
;
1265 label_chain
->lss_space
= space_chain
;
1266 label_chain
->lss_next
= NULL
;
1268 if (label_symbols_rootp
)
1269 label_chain
->lss_next
= label_symbols_rootp
;
1271 label_symbols_rootp
= label_chain
;
1275 /* Removes a label definition for the current space.
1276 If there is no label_symbol_struct entry, then no action is taken. */
1279 pa_undefine_label ()
1281 label_symbol_struct
*label_chain
;
1282 label_symbol_struct
*prev_label_chain
= NULL
;
1283 sd_chain_struct
*space_chain
= current_space
;
1285 for (label_chain
= label_symbols_rootp
;
1287 label_chain
= label_chain
->lss_next
)
1289 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1291 /* Remove the label from the chain and free its memory. */
1292 if (prev_label_chain
)
1293 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1295 label_symbols_rootp
= label_chain
->lss_next
;
1300 prev_label_chain
= label_chain
;
1305 /* An HPPA-specific version of fix_new. This is required because the HPPA
1306 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1307 results in the creation of an instance of an hppa_fix_struct. An
1308 hppa_fix_struct stores the extra information along with a pointer to the
1309 original fixS. This is attached to the original fixup via the
1310 tc_fix_data field. */
1313 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1314 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1318 symbolS
*add_symbol
;
1322 bfd_reloc_code_real_type r_type
;
1323 enum hppa_reloc_field_selector_type r_field
;
1330 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1331 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1334 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1336 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1337 new_fix
->tc_fix_data
= hppa_fix
;
1338 hppa_fix
->fx_r_type
= r_type
;
1339 hppa_fix
->fx_r_field
= r_field
;
1340 hppa_fix
->fx_r_format
= r_format
;
1341 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1344 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1346 /* If necessary call BFD backend function to attach the
1347 unwind bits to the target dependent parts of a BFD symbol.
1349 #ifdef obj_attach_unwind_info
1350 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1354 /* foo-$global$ is used to access non-automatic storage. $global$
1355 is really just a marker and has served its purpose, so eliminate
1356 it now so as not to confuse write.c. */
1357 if (new_fix
->fx_subsy
1358 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1359 new_fix
->fx_subsy
= NULL
;
1362 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1363 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1366 parse_cons_expression_hppa (exp
)
1369 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1373 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1374 hppa_field_selector is set by the parse_cons_expression_hppa. */
1377 cons_fix_new_hppa (frag
, where
, size
, exp
)
1383 unsigned int reloc_type
;
1385 if (is_DP_relative (*exp
))
1386 reloc_type
= R_HPPA_GOTOFF
;
1387 else if (is_complex (*exp
))
1388 reloc_type
= R_HPPA_COMPLEX
;
1390 reloc_type
= R_HPPA
;
1392 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1393 as_warn ("Invalid field selector. Assuming F%%.");
1395 fix_new_hppa (frag
, where
, size
,
1396 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, reloc_type
,
1397 hppa_field_selector
, 32, 0, (char *) 0);
1399 /* Reset field selector to its default state. */
1400 hppa_field_selector
= 0;
1403 /* This function is called once, at assembler startup time. It should
1404 set up all the tables, etc. that the MD part of the assembler will need. */
1409 const char *retval
= NULL
;
1413 last_call_info
= NULL
;
1414 call_info_root
= NULL
;
1416 /* Folding of text and data segments fails miserably on the PA.
1417 Warn user and disable "-R" option. */
1420 as_warn ("-R option not supported on this target.");
1421 flag_readonly_data_in_text
= 0;
1427 op_hash
= hash_new ();
1428 if (op_hash
== NULL
)
1429 as_fatal ("Virtual memory exhausted");
1431 while (i
< NUMOPCODES
)
1433 const char *name
= pa_opcodes
[i
].name
;
1434 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1435 if (retval
!= NULL
&& *retval
!= '\0')
1437 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1442 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1443 != pa_opcodes
[i
].match
)
1445 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1446 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1451 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1455 as_fatal ("Broken assembler. No assembly attempted.");
1457 /* SOM will change text_section. To make sure we never put
1458 anything into the old one switch to the new one now. */
1459 subseg_set (text_section
, 0);
1462 /* Called at the end of assembling a source file. Nothing to do
1463 at this point on the PA. */
1471 /* Assemble a single instruction storing it into a frag. */
1478 /* The had better be something to assemble. */
1481 /* Assemble the instruction. Results are saved into "the_insn". */
1484 /* Get somewhere to put the assembled instrution. */
1487 /* Output the opcode. */
1488 md_number_to_chars (to
, the_insn
.opcode
, 4);
1490 /* If necessary output more stuff. */
1491 if (the_insn
.reloc
!= R_HPPA_NONE
)
1492 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1493 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1494 the_insn
.reloc
, the_insn
.field_selector
,
1495 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1499 /* Do the real work for assembling a single instruction. Store results
1500 into the global "the_insn" variable.
1502 FIXME: Should define and use some functions/macros to handle
1503 various common insertions of information into the opcode. */
1509 char *error_message
= "";
1510 char *s
, c
, *argstart
, *name
, *save_s
;
1514 int cmpltr
, nullif
, flag
, cond
, num
;
1515 unsigned long opcode
;
1516 struct pa_opcode
*insn
;
1518 /* Skip to something interesting. */
1519 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1538 as_bad ("Unknown opcode: `%s'", str
);
1544 /* Convert everything into lower case. */
1547 if (isupper (*save_s
))
1548 *save_s
= tolower (*save_s
);
1552 /* Look up the opcode in the has table. */
1553 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1555 as_bad ("Unknown opcode: `%s'", str
);
1564 /* Mark the location where arguments for the instruction start, then
1565 start processing them. */
1569 /* Do some initialization. */
1570 opcode
= insn
->match
;
1571 bzero (&the_insn
, sizeof (the_insn
));
1573 the_insn
.reloc
= R_HPPA_NONE
;
1575 /* Build the opcode, checking as we go to make
1576 sure that the operands match. */
1577 for (args
= insn
->args
;; ++args
)
1582 /* End of arguments. */
1598 /* These must match exactly. */
1607 /* Handle a 5 bit register or control register field at 10. */
1610 num
= pa_parse_number (&s
, 0);
1611 CHECK_FIELD (num
, 31, 0, 0);
1612 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1614 /* Handle a 5 bit register field at 15. */
1616 num
= pa_parse_number (&s
, 0);
1617 CHECK_FIELD (num
, 31, 0, 0);
1618 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1620 /* Handle a 5 bit register field at 31. */
1623 num
= pa_parse_number (&s
, 0);
1624 CHECK_FIELD (num
, 31, 0, 0);
1625 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1627 /* Handle a 5 bit field length at 31. */
1629 num
= pa_get_absolute_expression (&the_insn
, &s
);
1631 CHECK_FIELD (num
, 32, 1, 0);
1632 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1634 /* Handle a 5 bit immediate at 15. */
1636 num
= pa_get_absolute_expression (&the_insn
, &s
);
1638 CHECK_FIELD (num
, 15, -16, 0);
1639 low_sign_unext (num
, 5, &num
);
1640 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1642 /* Handle a 5 bit immediate at 31. */
1644 num
= pa_get_absolute_expression (&the_insn
, &s
);
1646 CHECK_FIELD (num
, 15, -16, 0)
1647 low_sign_unext (num
, 5, &num
);
1648 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1650 /* Handle an unsigned 5 bit immediate at 31. */
1652 num
= pa_get_absolute_expression (&the_insn
, &s
);
1654 CHECK_FIELD (num
, 31, 0, 0);
1655 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1657 /* Handle an unsigned 5 bit immediate at 15. */
1659 num
= pa_get_absolute_expression (&the_insn
, &s
);
1661 CHECK_FIELD (num
, 31, 0, 0);
1662 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1664 /* Handle a 2 bit space identifier at 17. */
1666 num
= pa_parse_number (&s
, 0);
1667 CHECK_FIELD (num
, 3, 0, 1);
1668 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1670 /* Handle a 3 bit space identifier at 18. */
1672 num
= pa_parse_number (&s
, 0);
1673 CHECK_FIELD (num
, 7, 0, 1);
1674 dis_assemble_3 (num
, &num
);
1675 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1677 /* Handle a completer for an indexing load or store. */
1683 while (*s
== ',' && i
< 2)
1686 if (strncasecmp (s
, "sm", 2) == 0)
1693 else if (strncasecmp (s
, "m", 1) == 0)
1695 else if (strncasecmp (s
, "s", 1) == 0)
1698 as_bad ("Invalid Indexed Load Completer.");
1703 as_bad ("Invalid Indexed Load Completer Syntax.");
1705 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1708 /* Handle a short load/store completer. */
1716 if (strncasecmp (s
, "ma", 2) == 0)
1721 else if (strncasecmp (s
, "mb", 2) == 0)
1727 as_bad ("Invalid Short Load/Store Completer.");
1731 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1734 /* Handle a stbys completer. */
1740 while (*s
== ',' && i
< 2)
1743 if (strncasecmp (s
, "m", 1) == 0)
1745 else if (strncasecmp (s
, "b", 1) == 0)
1747 else if (strncasecmp (s
, "e", 1) == 0)
1750 as_bad ("Invalid Store Bytes Short Completer");
1755 as_bad ("Invalid Store Bytes Short Completer");
1757 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1760 /* Handle a non-negated compare/stubtract condition. */
1762 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1765 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1768 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1770 /* Handle a negated or non-negated compare/subtract condition. */
1773 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1777 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1780 as_bad ("Invalid Compare/Subtract Condition.");
1785 /* Negated condition requires an opcode change. */
1789 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1791 /* Handle a negated or non-negated add condition. */
1794 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1798 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1801 as_bad ("Invalid Compare/Subtract Condition");
1806 /* Negated condition requires an opcode change. */
1810 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1812 /* Handle a compare/subtract condition. */
1819 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1824 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1827 as_bad ("Invalid Compare/Subtract Condition");
1831 opcode
|= cmpltr
<< 13;
1832 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1834 /* Handle a non-negated add condition. */
1843 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1847 if (strcmp (name
, "=") == 0)
1849 else if (strcmp (name
, "<") == 0)
1851 else if (strcmp (name
, "<=") == 0)
1853 else if (strcasecmp (name
, "nuv") == 0)
1855 else if (strcasecmp (name
, "znv") == 0)
1857 else if (strcasecmp (name
, "sv") == 0)
1859 else if (strcasecmp (name
, "od") == 0)
1861 else if (strcasecmp (name
, "n") == 0)
1863 else if (strcasecmp (name
, "tr") == 0)
1868 else if (strcasecmp (name
, "<>") == 0)
1873 else if (strcasecmp (name
, ">=") == 0)
1878 else if (strcasecmp (name
, ">") == 0)
1883 else if (strcasecmp (name
, "uv") == 0)
1888 else if (strcasecmp (name
, "vnz") == 0)
1893 else if (strcasecmp (name
, "nsv") == 0)
1898 else if (strcasecmp (name
, "ev") == 0)
1904 as_bad ("Invalid Add Condition: %s", name
);
1907 nullif
= pa_parse_nullif (&s
);
1908 opcode
|= nullif
<< 1;
1909 opcode
|= cmpltr
<< 13;
1910 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1912 /* HANDLE a logical instruction condition. */
1920 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1924 if (strcmp (name
, "=") == 0)
1926 else if (strcmp (name
, "<") == 0)
1928 else if (strcmp (name
, "<=") == 0)
1930 else if (strcasecmp (name
, "od") == 0)
1932 else if (strcasecmp (name
, "tr") == 0)
1937 else if (strcmp (name
, "<>") == 0)
1942 else if (strcmp (name
, ">=") == 0)
1947 else if (strcmp (name
, ">") == 0)
1952 else if (strcasecmp (name
, "ev") == 0)
1958 as_bad ("Invalid Logical Instruction Condition.");
1961 opcode
|= cmpltr
<< 13;
1962 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1964 /* Handle a unit instruction condition. */
1971 if (strncasecmp (s
, "sbz", 3) == 0)
1976 else if (strncasecmp (s
, "shz", 3) == 0)
1981 else if (strncasecmp (s
, "sdc", 3) == 0)
1986 else if (strncasecmp (s
, "sbc", 3) == 0)
1991 else if (strncasecmp (s
, "shc", 3) == 0)
1996 else if (strncasecmp (s
, "tr", 2) == 0)
2002 else if (strncasecmp (s
, "nbz", 3) == 0)
2008 else if (strncasecmp (s
, "nhz", 3) == 0)
2014 else if (strncasecmp (s
, "ndc", 3) == 0)
2020 else if (strncasecmp (s
, "nbc", 3) == 0)
2026 else if (strncasecmp (s
, "nhc", 3) == 0)
2033 as_bad ("Invalid Logical Instruction Condition.");
2035 opcode
|= cmpltr
<< 13;
2036 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
2038 /* Handle a shift/extract/deposit condition. */
2046 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
2050 if (strcmp (name
, "=") == 0)
2052 else if (strcmp (name
, "<") == 0)
2054 else if (strcasecmp (name
, "od") == 0)
2056 else if (strcasecmp (name
, "tr") == 0)
2058 else if (strcmp (name
, "<>") == 0)
2060 else if (strcmp (name
, ">=") == 0)
2062 else if (strcasecmp (name
, "ev") == 0)
2064 /* Handle movb,n. Put things back the way they were.
2065 This includes moving s back to where it started. */
2066 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
2073 as_bad ("Invalid Shift/Extract/Deposit Condition.");
2076 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2078 /* Handle bvb and bb conditions. */
2084 if (strncmp (s
, "<", 1) == 0)
2089 else if (strncmp (s
, ">=", 2) == 0)
2095 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2097 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2099 /* Handle a system control completer. */
2101 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2109 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2111 /* Handle a nullification completer for branch instructions. */
2113 nullif
= pa_parse_nullif (&s
);
2114 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2116 /* Handle a 11 bit immediate at 31. */
2118 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2121 if (the_insn
.exp
.X_op
== O_constant
)
2123 num
= evaluate_absolute (&the_insn
);
2124 CHECK_FIELD (num
, 1023, -1024, 0);
2125 low_sign_unext (num
, 11, &num
);
2126 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2130 if (is_DP_relative (the_insn
.exp
))
2131 the_insn
.reloc
= R_HPPA_GOTOFF
;
2132 else if (is_PC_relative (the_insn
.exp
))
2133 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2134 else if (is_complex (the_insn
.exp
))
2135 the_insn
.reloc
= R_HPPA_COMPLEX
;
2137 the_insn
.reloc
= R_HPPA
;
2138 the_insn
.format
= 11;
2142 /* Handle a 14 bit immediate at 31. */
2144 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2147 if (the_insn
.exp
.X_op
== O_constant
)
2149 num
= evaluate_absolute (&the_insn
);
2150 CHECK_FIELD (num
, 8191, -8192, 0);
2151 low_sign_unext (num
, 14, &num
);
2152 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2156 if (is_DP_relative (the_insn
.exp
))
2157 the_insn
.reloc
= R_HPPA_GOTOFF
;
2158 else if (is_PC_relative (the_insn
.exp
))
2159 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2160 else if (is_complex (the_insn
.exp
))
2161 the_insn
.reloc
= R_HPPA_COMPLEX
;
2163 the_insn
.reloc
= R_HPPA
;
2164 the_insn
.format
= 14;
2168 /* Handle a 21 bit immediate at 31. */
2170 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2173 if (the_insn
.exp
.X_op
== O_constant
)
2175 num
= evaluate_absolute (&the_insn
);
2176 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2177 dis_assemble_21 (num
, &num
);
2178 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2182 if (is_DP_relative (the_insn
.exp
))
2183 the_insn
.reloc
= R_HPPA_GOTOFF
;
2184 else if (is_PC_relative (the_insn
.exp
))
2185 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2186 else if (is_complex (the_insn
.exp
))
2187 the_insn
.reloc
= R_HPPA_COMPLEX
;
2189 the_insn
.reloc
= R_HPPA
;
2190 the_insn
.format
= 21;
2194 /* Handle a 12 bit branch displacement. */
2196 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2200 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2202 unsigned int w1
, w
, result
;
2204 num
= evaluate_absolute (&the_insn
);
2207 as_bad ("Branch to unaligned address");
2210 CHECK_FIELD (num
, 8191, -8192, 0);
2211 sign_unext ((num
- 8) >> 2, 12, &result
);
2212 dis_assemble_12 (result
, &w1
, &w
);
2213 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2217 if (is_complex (the_insn
.exp
))
2218 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2220 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2221 the_insn
.format
= 12;
2222 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2223 bzero (&last_call_desc
, sizeof (struct call_desc
));
2228 /* Handle a 17 bit branch displacement. */
2230 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2234 if (!the_insn
.exp
.X_add_symbol
2235 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2238 unsigned int w2
, w1
, w
, result
;
2240 num
= evaluate_absolute (&the_insn
);
2243 as_bad ("Branch to unaligned address");
2246 CHECK_FIELD (num
, 262143, -262144, 0);
2248 if (the_insn
.exp
.X_add_symbol
)
2251 sign_unext (num
>> 2, 17, &result
);
2252 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2253 INSERT_FIELD_AND_CONTINUE (opcode
,
2254 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2258 if (is_complex (the_insn
.exp
))
2259 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2261 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2262 the_insn
.format
= 17;
2263 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2264 bzero (&last_call_desc
, sizeof (struct call_desc
));
2268 /* Handle an absolute 17 bit branch target. */
2270 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2274 if (!the_insn
.exp
.X_add_symbol
2275 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2278 unsigned int w2
, w1
, w
, result
;
2280 num
= evaluate_absolute (&the_insn
);
2283 as_bad ("Branch to unaligned address");
2286 CHECK_FIELD (num
, 262143, -262144, 0);
2288 if (the_insn
.exp
.X_add_symbol
)
2291 sign_unext (num
>> 2, 17, &result
);
2292 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2293 INSERT_FIELD_AND_CONTINUE (opcode
,
2294 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2298 if (is_complex (the_insn
.exp
))
2299 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2301 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2302 the_insn
.format
= 17;
2306 /* Handle a 5 bit shift count at 26. */
2308 num
= pa_get_absolute_expression (&the_insn
, &s
);
2310 CHECK_FIELD (num
, 31, 0, 0);
2311 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2313 /* Handle a 5 bit bit position at 26. */
2315 num
= pa_get_absolute_expression (&the_insn
, &s
);
2317 CHECK_FIELD (num
, 31, 0, 0);
2318 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2320 /* Handle a 5 bit immediate at 10. */
2322 num
= pa_get_absolute_expression (&the_insn
, &s
);
2324 CHECK_FIELD (num
, 31, 0, 0);
2325 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2327 /* Handle a 13 bit immediate at 18. */
2329 num
= pa_get_absolute_expression (&the_insn
, &s
);
2331 CHECK_FIELD (num
, 4095, -4096, 0);
2332 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2334 /* Handle a 26 bit immediate at 31. */
2336 num
= pa_get_absolute_expression (&the_insn
, &s
);
2338 CHECK_FIELD (num
, 671108864, 0, 0);
2339 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2341 /* Handle a 3 bit SFU identifier at 25. */
2343 num
= pa_get_absolute_expression (&the_insn
, &s
);
2345 CHECK_FIELD (num
, 7, 0, 0);
2346 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2348 /* We don't support any of these. FIXME. */
2355 /* Handle a source FP operand format completer. */
2357 flag
= pa_parse_fp_format (&s
);
2358 the_insn
.fpof1
= flag
;
2359 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2361 /* Handle a destination FP operand format completer. */
2363 /* pa_parse_format needs the ',' prefix. */
2365 flag
= pa_parse_fp_format (&s
);
2366 the_insn
.fpof2
= flag
;
2367 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2369 /* Handle FP compare conditions. */
2371 cond
= pa_parse_fp_cmp_cond (&s
);
2372 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2374 /* Handle L/R register halves like 't'. */
2377 struct pa_89_fp_reg_struct result
;
2379 pa_parse_number (&s
, &result
);
2380 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2381 opcode
|= result
.number_part
;
2383 /* 0x30 opcodes are FP arithmetic operation opcodes
2384 and need to be turned into 0x38 opcodes. This
2385 is not necessary for loads/stores. */
2386 if (need_89_opcode (&the_insn
, &result
)
2387 && ((opcode
& 0xfc000000) == 0x30000000))
2390 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2393 /* Handle L/R register halves like 'b'. */
2396 struct pa_89_fp_reg_struct result
;
2398 pa_parse_number (&s
, &result
);
2399 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2400 opcode
|= result
.number_part
<< 21;
2401 if (need_89_opcode (&the_insn
, &result
))
2403 opcode
|= (result
.l_r_select
& 1) << 7;
2409 /* Handle L/R register halves like 'x'. */
2412 struct pa_89_fp_reg_struct result
;
2414 pa_parse_number (&s
, &result
);
2415 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2416 opcode
|= (result
.number_part
& 0x1f) << 16;
2417 if (need_89_opcode (&the_insn
, &result
))
2419 opcode
|= (result
.l_r_select
& 1) << 12;
2425 /* Handle a 5 bit register field at 10. */
2428 struct pa_89_fp_reg_struct result
;
2430 pa_parse_number (&s
, &result
);
2431 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2432 if (the_insn
.fpof1
== SGL
)
2434 result
.number_part
&= 0xF;
2435 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2437 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2440 /* Handle a 5 bit register field at 15. */
2443 struct pa_89_fp_reg_struct result
;
2445 pa_parse_number (&s
, &result
);
2446 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2447 if (the_insn
.fpof1
== SGL
)
2449 result
.number_part
&= 0xF;
2450 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2452 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2455 /* Handle a 5 bit register field at 31. */
2458 struct pa_89_fp_reg_struct result
;
2460 pa_parse_number (&s
, &result
);
2461 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2462 if (the_insn
.fpof1
== SGL
)
2464 result
.number_part
&= 0xF;
2465 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2467 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2470 /* Handle a 5 bit register field at 20. */
2473 struct pa_89_fp_reg_struct result
;
2475 pa_parse_number (&s
, &result
);
2476 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2477 if (the_insn
.fpof1
== SGL
)
2479 result
.number_part
&= 0xF;
2480 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2482 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2485 /* Handle a 5 bit register field at 25. */
2488 struct pa_89_fp_reg_struct result
;
2490 pa_parse_number (&s
, &result
);
2491 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2492 if (the_insn
.fpof1
== SGL
)
2494 result
.number_part
&= 0xF;
2495 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2497 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2500 /* Handle a floating point operand format at 26.
2501 Only allows single and double precision. */
2503 flag
= pa_parse_fp_format (&s
);
2509 the_insn
.fpof1
= flag
;
2515 as_bad ("Invalid Floating Point Operand Format.");
2525 /* Check if the args matched. */
2528 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2529 && !strcmp (insn
->name
, insn
[1].name
))
2537 as_bad ("Invalid operands %s", error_message
);
2544 the_insn
.opcode
= opcode
;
2548 /* Turn a string in input_line_pointer into a floating point constant of type
2549 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2550 emitted is stored in *sizeP . An error message or NULL is returned. */
2552 #define MAX_LITTLENUMS 6
2555 md_atof (type
, litP
, sizeP
)
2561 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2562 LITTLENUM_TYPE
*wordP
;
2594 return "Bad call to MD_ATOF()";
2596 t
= atof_ieee (input_line_pointer
, type
, words
);
2598 input_line_pointer
= t
;
2599 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2600 for (wordP
= words
; prec
--;)
2602 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2603 litP
+= sizeof (LITTLENUM_TYPE
);
2608 /* Write out big-endian. */
2611 md_number_to_chars (buf
, val
, n
)
2633 /* Translate internal representation of relocation info to BFD target
2637 tc_gen_reloc (section
, fixp
)
2642 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2643 bfd_reloc_code_real_type code
;
2644 static int unwind_reloc_fixp_cnt
= 0;
2645 static arelent
*unwind_reloc_entryP
= NULL
;
2646 static arelent
*no_relocs
= NULL
;
2648 bfd_reloc_code_real_type
**codes
;
2652 if (fixp
->fx_addsy
== 0)
2654 assert (hppa_fixp
!= 0);
2655 assert (section
!= 0);
2658 /* Yuk. I would really like to push all this ELF specific unwind
2659 crud into BFD and the linker. That's how SOM does it -- and
2660 if we could make ELF emulate that then we could share more code
2661 in GAS (and potentially a gnu-linker later).
2663 Unwind section relocations are handled in a special way.
2664 The relocations for the .unwind section are originally
2665 built in the usual way. That is, for each unwind table
2666 entry there are two relocations: one for the beginning of
2667 the function and one for the end.
2669 The first time we enter this function we create a
2670 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2671 of the relocation is initialized to 0. Each additional
2672 pair of times this function is called for the unwind
2673 section represents an additional unwind table entry. Thus,
2674 the addend of the relocation should end up to be the number
2675 of unwind table entries. */
2676 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2678 if (unwind_reloc_entryP
== NULL
)
2680 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2682 assert (reloc
!= 0);
2683 unwind_reloc_entryP
= reloc
;
2684 unwind_reloc_fixp_cnt
++;
2685 unwind_reloc_entryP
->address
2686 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2687 /* A pointer to any function will do. We only
2688 need one to tell us what section the unwind
2689 relocations are for. */
2690 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2691 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2692 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2693 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2694 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2695 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2696 sizeof (arelent
*) * 2);
2697 assert (relocs
!= 0);
2698 relocs
[0] = unwind_reloc_entryP
;
2702 unwind_reloc_fixp_cnt
++;
2703 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2709 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2710 assert (reloc
!= 0);
2712 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2713 codes
= hppa_gen_reloc_type (stdoutput
,
2715 hppa_fixp
->fx_r_format
,
2716 hppa_fixp
->fx_r_field
);
2718 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2721 relocs
= (arelent
**)
2722 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2723 assert (relocs
!= 0);
2725 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2726 sizeof (arelent
) * n_relocs
);
2728 assert (reloc
!= 0);
2730 for (i
= 0; i
< n_relocs
; i
++)
2731 relocs
[i
] = &reloc
[i
];
2733 relocs
[n_relocs
] = NULL
;
2736 switch (fixp
->fx_r_type
)
2738 case R_HPPA_COMPLEX
:
2739 case R_HPPA_COMPLEX_PCREL_CALL
:
2740 case R_HPPA_COMPLEX_ABS_CALL
:
2741 assert (n_relocs
== 5);
2743 for (i
= 0; i
< n_relocs
; i
++)
2745 reloc
[i
].sym_ptr_ptr
= NULL
;
2746 reloc
[i
].address
= 0;
2747 reloc
[i
].addend
= 0;
2748 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2749 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2752 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2753 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2754 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2756 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2757 reloc
[3].addend
= fixp
->fx_addnumber
;
2758 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2759 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2760 reloc
[1].addend
= fixp
->fx_addnumber
;
2765 assert (n_relocs
== 1);
2769 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2770 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2771 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2772 reloc
->addend
= 0; /* default */
2774 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2776 /* Now, do any processing that is dependent on the relocation type. */
2779 case R_HPPA_PLABEL_32
:
2780 case R_HPPA_PLABEL_11
:
2781 case R_HPPA_PLABEL_14
:
2782 case R_HPPA_PLABEL_L21
:
2783 case R_HPPA_PLABEL_R11
:
2784 case R_HPPA_PLABEL_R14
:
2785 /* For plabel relocations, the addend of the
2786 relocation should be either 0 (no static link) or 2
2787 (static link required).
2789 FIXME: assume that fx_addnumber contains this
2791 reloc
->addend
= fixp
->fx_addnumber
;
2794 case R_HPPA_ABS_CALL_11
:
2795 case R_HPPA_ABS_CALL_14
:
2796 case R_HPPA_ABS_CALL_17
:
2797 case R_HPPA_ABS_CALL_L21
:
2798 case R_HPPA_ABS_CALL_R11
:
2799 case R_HPPA_ABS_CALL_R14
:
2800 case R_HPPA_ABS_CALL_R17
:
2801 case R_HPPA_ABS_CALL_LS21
:
2802 case R_HPPA_ABS_CALL_RS11
:
2803 case R_HPPA_ABS_CALL_RS14
:
2804 case R_HPPA_ABS_CALL_RS17
:
2805 case R_HPPA_ABS_CALL_LD21
:
2806 case R_HPPA_ABS_CALL_RD11
:
2807 case R_HPPA_ABS_CALL_RD14
:
2808 case R_HPPA_ABS_CALL_RD17
:
2809 case R_HPPA_ABS_CALL_LR21
:
2810 case R_HPPA_ABS_CALL_RR14
:
2811 case R_HPPA_ABS_CALL_RR17
:
2813 case R_HPPA_PCREL_CALL_11
:
2814 case R_HPPA_PCREL_CALL_14
:
2815 case R_HPPA_PCREL_CALL_17
:
2816 case R_HPPA_PCREL_CALL_L21
:
2817 case R_HPPA_PCREL_CALL_R11
:
2818 case R_HPPA_PCREL_CALL_R14
:
2819 case R_HPPA_PCREL_CALL_R17
:
2820 case R_HPPA_PCREL_CALL_LS21
:
2821 case R_HPPA_PCREL_CALL_RS11
:
2822 case R_HPPA_PCREL_CALL_RS14
:
2823 case R_HPPA_PCREL_CALL_RS17
:
2824 case R_HPPA_PCREL_CALL_LD21
:
2825 case R_HPPA_PCREL_CALL_RD11
:
2826 case R_HPPA_PCREL_CALL_RD14
:
2827 case R_HPPA_PCREL_CALL_RD17
:
2828 case R_HPPA_PCREL_CALL_LR21
:
2829 case R_HPPA_PCREL_CALL_RR14
:
2830 case R_HPPA_PCREL_CALL_RR17
:
2831 /* The constant is stored in the instruction. */
2832 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2835 reloc
->addend
= fixp
->fx_addnumber
;
2842 /* Preliminary relocation handling for SOM. Needs to handle
2843 COMPLEX relocations (yes, I've seen them occur) and it will
2844 need to handle R_ENTRY/R_EXIT relocations in the very near future
2845 (for generating unwinds). */
2846 switch (fixp
->fx_r_type
)
2848 case R_HPPA_COMPLEX
:
2849 case R_HPPA_COMPLEX_PCREL_CALL
:
2850 case R_HPPA_COMPLEX_ABS_CALL
:
2854 assert (n_relocs
== 1);
2858 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2859 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2860 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2866 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2871 /* For plabel relocations, the addend of the
2872 relocation should be either 0 (no static link) or 2
2873 (static link required).
2875 FIXME: We always assume no static link! */
2880 reloc
->addend
= fixp
->fx_addnumber
;
2890 /* Process any machine dependent frag types. */
2893 md_convert_frag (abfd
, sec
, fragP
)
2895 register asection
*sec
;
2896 register fragS
*fragP
;
2898 unsigned int address
;
2900 if (fragP
->fr_type
== rs_machine_dependent
)
2902 switch ((int) fragP
->fr_subtype
)
2905 fragP
->fr_type
= rs_fill
;
2906 know (fragP
->fr_var
== 1);
2907 know (fragP
->fr_next
);
2908 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2909 if (address
% fragP
->fr_offset
)
2912 fragP
->fr_next
->fr_address
2917 fragP
->fr_offset
= 0;
2923 /* Round up a section size to the appropriate boundary. */
2926 md_section_align (segment
, size
)
2930 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2931 int align2
= (1 << align
) - 1;
2933 return (size
+ align2
) & ~align2
;
2937 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2939 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2941 addressT from_addr
, to_addr
;
2945 fprintf (stderr
, "pa_create_short_jmp\n");
2949 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2951 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2953 addressT from_addr
, to_addr
;
2957 fprintf (stderr
, "pa_create_long_jump\n");
2961 /* Return the approximate size of a frag before relaxation has occurred. */
2963 md_estimate_size_before_relax (fragP
, segment
)
2964 register fragS
*fragP
;
2971 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2977 /* Parse machine dependent options. There are none on the PA. */
2979 md_parse_option (argP
, cntP
, vecP
)
2987 /* We have no need to default values of symbols. */
2990 md_undefined_symbol (name
)
2996 /* Parse an operand that is machine-specific.
2997 We just return without modifying the expression as we have nothing
3001 md_operand (expressionP
)
3002 expressionS
*expressionP
;
3006 /* Helper function for md_apply_fix. Actually determine if the fix
3007 can be applied, and if so, apply it.
3009 If a fix is applied, then set fx_addsy to NULL which indicates
3010 the fix was applied and need not be emitted into the object file. */
3013 md_apply_fix_1 (fixP
, val
)
3017 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
3018 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
3019 long new_val
, result
;
3020 unsigned int w1
, w2
, w
;
3022 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3023 never be "applied". They must always be emitted. */
3025 if (fixP
->fx_r_type
== R_HPPA_ENTRY
3026 || fixP
->fx_r_type
== R_HPPA_EXIT
)
3030 /* There should have been an HPPA specific fixup associated
3031 with the GAS fixup. */
3034 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
3035 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
3037 if (fixP
->fx_r_type
== R_HPPA_NONE
)
3040 /* Remember this value for emit_reloc. FIXME, is this braindamage
3041 documented anywhere!?! */
3042 fixP
->fx_addnumber
= val
;
3044 /* Check if this is an undefined symbol. No relocation can
3045 possibly be performed in this case. */
3046 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
3048 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
3051 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
3052 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
3053 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
)
3054 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3060 /* Handle all opcodes with the 'j' operand type. */
3062 CHECK_FIELD (new_val
, 8191, -8192, 0);
3064 /* Mask off 14 bits to be changed. */
3065 bfd_put_32 (stdoutput
,
3066 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3068 low_sign_unext (new_val
, 14, &result
);
3071 /* Handle all opcodes with the 'k' operand type. */
3073 CHECK_FIELD (new_val
, 2097152, 0, 0);
3075 /* Mask off 21 bits to be changed. */
3076 bfd_put_32 (stdoutput
,
3077 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3079 dis_assemble_21 (new_val
, &result
);
3082 /* Handle all the opcodes with the 'i' operand type. */
3084 CHECK_FIELD (new_val
, 1023, -1023, 0);
3086 /* Mask off 11 bits to be changed. */
3087 bfd_put_32 (stdoutput
,
3088 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3090 low_sign_unext (new_val
, 11, &result
);
3093 /* Handle all the opcodes with the 'w' operand type. */
3095 CHECK_FIELD (new_val
, 8191, -8192, 0)
3097 /* Mask off 11 bits to be changed. */
3098 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3099 bfd_put_32 (stdoutput
,
3100 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3103 dis_assemble_12 (result
, &w1
, &w
);
3104 result
= ((w1
<< 2) | w
);
3107 #define stub_needed(CALLER, CALLEE) \
3108 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3110 /* Handle some of the opcodes with the 'W' operand type. */
3112 /* If a long-call stub or argument relocation stub is
3113 needed, then we can not apply this relocation, instead
3114 the linker must handle it. */
3115 if (new_val
> 262143 || new_val
< -262144
3116 || stub_needed (((obj_symbol_type
*)
3117 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3118 hppa_fixP
->fx_arg_reloc
))
3121 /* No stubs were needed, we can perform this relocation. */
3122 CHECK_FIELD (new_val
, 262143, -262144, 0);
3124 /* Mask off 17 bits to be changed. */
3125 bfd_put_32 (stdoutput
,
3126 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3128 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3129 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3130 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3138 /* These are ELF specific relocations. ELF unfortunately
3139 handles unwinds in a completely different manner. */
3140 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3141 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3142 result
= fixP
->fx_addnumber
;
3147 fixP
->fx_addnumber
= fixP
->fx_offset
;
3148 bfd_put_32 (stdoutput
, 0, buf
);
3157 as_bad ("Unknown relocation encountered in md_apply_fix.");
3161 /* Insert the relocation. */
3162 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3165 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3166 (unsigned int) fixP
, fixP
->fx_r_type
);
3169 /* Apply a fix into a frag's data (if possible). */
3172 md_apply_fix (fixP
, valp
)
3176 md_apply_fix_1 (fixP
, (long) *valp
);
3180 /* Exactly what point is a PC-relative offset relative TO?
3181 On the PA, they're relative to the address of the offset. */
3184 md_pcrel_from (fixP
)
3187 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3190 /* Return nonzero if the input line pointer is at the end of
3194 is_end_of_statement ()
3196 return ((*input_line_pointer
== '\n')
3197 || (*input_line_pointer
== ';')
3198 || (*input_line_pointer
== '!'));
3201 /* Read a number from S. The number might come in one of many forms,
3202 the most common will be a hex or decimal constant, but it could be
3203 a pre-defined register (Yuk!), or an absolute symbol.
3205 Return a number or -1 for failure.
3207 When parsing PA-89 FP register numbers RESULT will be
3208 the address of a structure to return information about
3209 L/R half of FP registers, store results there as appropriate.
3211 pa_parse_number can not handle negative constants and will fail
3212 horribly if it is passed such a constant. */
3215 pa_parse_number (s
, result
)
3217 struct pa_89_fp_reg_struct
*result
;
3226 /* Skip whitespace before the number. */
3227 while (*p
== ' ' || *p
== '\t')
3230 /* Store info in RESULT if requested by caller. */
3233 result
->number_part
= -1;
3234 result
->l_r_select
= -1;
3240 /* Looks like a number. */
3243 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3245 /* The number is specified in hex. */
3247 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3248 || ((*p
>= 'A') && (*p
<= 'F')))
3251 num
= num
* 16 + *p
- '0';
3252 else if (*p
>= 'a' && *p
<= 'f')
3253 num
= num
* 16 + *p
- 'a' + 10;
3255 num
= num
* 16 + *p
- 'A' + 10;
3261 /* The number is specified in decimal. */
3262 while (isdigit (*p
))
3264 num
= num
* 10 + *p
- '0';
3269 /* Store info in RESULT if requested by the caller. */
3272 result
->number_part
= num
;
3274 if (IS_R_SELECT (p
))
3276 result
->l_r_select
= 1;
3279 else if (IS_L_SELECT (p
))
3281 result
->l_r_select
= 0;
3285 result
->l_r_select
= 0;
3290 /* The number might be a predefined register. */
3295 /* Tege hack: Special case for general registers as the general
3296 code makes a binary search with case translation, and is VERY
3301 if (*p
== 'e' && *(p
+ 1) == 't'
3302 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3305 num
= *p
- '0' + 28;
3313 else if (!isdigit (*p
))
3316 as_bad ("Undefined register: '%s'.", name
);
3322 num
= num
* 10 + *p
++ - '0';
3323 while (isdigit (*p
));
3328 /* Do a normal register search. */
3329 while (is_part_of_name (c
))
3335 status
= reg_name_search (name
);
3341 as_bad ("Undefined register: '%s'.", name
);
3347 /* Store info in RESULT if requested by caller. */
3350 result
->number_part
= num
;
3351 if (IS_R_SELECT (p
- 1))
3352 result
->l_r_select
= 1;
3353 else if (IS_L_SELECT (p
- 1))
3354 result
->l_r_select
= 0;
3356 result
->l_r_select
= 0;
3361 /* And finally, it could be a symbol in the absolute section which
3362 is effectively a constant. */
3366 while (is_part_of_name (c
))
3372 if ((sym
= symbol_find (name
)) != NULL
)
3374 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3375 num
= S_GET_VALUE (sym
);
3379 as_bad ("Non-absolute symbol: '%s'.", name
);
3385 /* There is where we'd come for an undefined symbol
3386 or for an empty string. For an empty string we
3387 will return zero. That's a concession made for
3388 compatability with the braindamaged HP assemblers. */
3394 as_bad ("Undefined absolute constant: '%s'.", name
);
3400 /* Store info in RESULT if requested by caller. */
3403 result
->number_part
= num
;
3404 if (IS_R_SELECT (p
- 1))
3405 result
->l_r_select
= 1;
3406 else if (IS_L_SELECT (p
- 1))
3407 result
->l_r_select
= 0;
3409 result
->l_r_select
= 0;
3417 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3419 /* Given NAME, find the register number associated with that name, return
3420 the integer value associated with the given name or -1 on failure. */
3423 reg_name_search (name
)
3426 int middle
, low
, high
;
3429 high
= REG_NAME_CNT
- 1;
3433 middle
= (low
+ high
) / 2;
3434 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) < 0)
3439 while (!((strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0) ||
3442 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0)
3443 return (pre_defined_registers
[middle
].value
);
3449 /* Return nonzero if the given INSN and L/R information will require
3450 a new PA-89 opcode. */
3453 need_89_opcode (insn
, result
)
3455 struct pa_89_fp_reg_struct
*result
;
3457 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3463 /* Parse a condition for a fcmp instruction. Return the numerical
3464 code associated with the condition. */
3467 pa_parse_fp_cmp_cond (s
)
3474 for (i
= 0; i
< 32; i
++)
3476 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3477 strlen (fp_cond_map
[i
].string
)) == 0)
3479 cond
= fp_cond_map
[i
].cond
;
3480 *s
+= strlen (fp_cond_map
[i
].string
);
3481 while (**s
== ' ' || **s
== '\t')
3487 as_bad ("Invalid FP Compare Condition: %c", **s
);
3491 /* Parse an FP operand format completer returning the completer
3494 static fp_operand_format
3495 pa_parse_fp_format (s
)
3504 if (strncasecmp (*s
, "sgl", 3) == 0)
3509 else if (strncasecmp (*s
, "dbl", 3) == 0)
3514 else if (strncasecmp (*s
, "quad", 4) == 0)
3521 format
= ILLEGAL_FMT
;
3522 as_bad ("Invalid FP Operand Format: %3s", *s
);
3529 /* Convert from a selector string into a selector type. */
3532 pa_chk_field_selector (str
)
3536 const struct selector_entry
*tablep
;
3540 /* Read past any whitespace. */
3541 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3544 /* Yuk. Looks like a linear search through the table. With the
3545 frequence of some selectors it might make sense to sort the
3547 for (tablep
= selector_table
; tablep
->prefix
; tablep
++)
3549 if (strncasecmp (tablep
->prefix
, *str
, strlen (tablep
->prefix
)) == 0)
3551 *str
+= strlen (tablep
->prefix
);
3552 selector
= tablep
->field_selector
;
3559 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3562 get_expression (str
)
3568 save_in
= input_line_pointer
;
3569 input_line_pointer
= str
;
3570 seg
= expression (&the_insn
.exp
);
3571 if (!(seg
== absolute_section
3572 || seg
== undefined_section
3573 || SEG_NORMAL (seg
)))
3575 as_warn ("Bad segment in expression.");
3576 expr_end
= input_line_pointer
;
3577 input_line_pointer
= save_in
;
3580 expr_end
= input_line_pointer
;
3581 input_line_pointer
= save_in
;
3585 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3587 pa_get_absolute_expression (insn
, strp
)
3593 insn
->field_selector
= pa_chk_field_selector (strp
);
3594 save_in
= input_line_pointer
;
3595 input_line_pointer
= *strp
;
3596 expression (&insn
->exp
);
3597 if (insn
->exp
.X_op
!= O_constant
)
3599 as_bad ("Bad segment (should be absolute).");
3600 expr_end
= input_line_pointer
;
3601 input_line_pointer
= save_in
;
3604 expr_end
= input_line_pointer
;
3605 input_line_pointer
= save_in
;
3606 return evaluate_absolute (insn
);
3609 /* Evaluate an absolute expression EXP which may be modified by
3610 the selector FIELD_SELECTOR. Return the value of the expression. */
3612 evaluate_absolute (insn
)
3617 int field_selector
= insn
->field_selector
;
3620 value
= exp
.X_add_number
;
3622 switch (field_selector
)
3628 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3630 if (value
& 0x00000400)
3632 value
= (value
& 0xfffff800) >> 11;
3635 /* Sign extend from bit 21. */
3637 if (value
& 0x00000400)
3638 value
|= 0xfffff800;
3643 /* Arithmetic shift right 11 bits. */
3645 value
= (value
& 0xfffff800) >> 11;
3648 /* Set bits 0-20 to zero. */
3650 value
= value
& 0x7ff;
3653 /* Add 0x800 and arithmetic shift right 11 bits. */
3658 value
= (value
& 0xfffff800) >> 11;
3661 /* Set bitgs 0-21 to one. */
3663 value
|= 0xfffff800;
3666 /* This had better get fixed. It looks like we're quickly moving
3673 BAD_CASE (field_selector
);
3679 /* Given an argument location specification return the associated
3680 argument location number. */
3683 pa_build_arg_reloc (type_name
)
3687 if (strncasecmp (type_name
, "no", 2) == 0)
3689 if (strncasecmp (type_name
, "gr", 2) == 0)
3691 else if (strncasecmp (type_name
, "fr", 2) == 0)
3693 else if (strncasecmp (type_name
, "fu", 2) == 0)
3696 as_bad ("Invalid argument location: %s\n", type_name
);
3701 /* Encode and return an argument relocation specification for
3702 the given register in the location specified by arg_reloc. */
3705 pa_align_arg_reloc (reg
, arg_reloc
)
3707 unsigned int arg_reloc
;
3709 unsigned int new_reloc
;
3711 new_reloc
= arg_reloc
;
3727 as_bad ("Invalid argument description: %d", reg
);
3733 /* Parse a PA nullification completer (,n). Return nonzero if the
3734 completer was found; return zero if no completer was found. */
3746 if (strncasecmp (*s
, "n", 1) == 0)
3750 as_bad ("Invalid Nullification: (%c)", **s
);
3759 /* Parse a non-negated compare/subtract completer returning the
3760 number (for encoding in instrutions) of the given completer.
3762 ISBRANCH specifies whether or not this is parsing a condition
3763 completer for a branch (vs a nullification completer for a
3764 computational instruction. */
3767 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3772 char *name
= *s
+ 1;
3780 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3784 if (strcmp (name
, "=") == 0)
3788 else if (strcmp (name
, "<") == 0)
3792 else if (strcmp (name
, "<=") == 0)
3796 else if (strcmp (name
, "<<") == 0)
3800 else if (strcmp (name
, "<<=") == 0)
3804 else if (strcasecmp (name
, "sv") == 0)
3808 else if (strcasecmp (name
, "od") == 0)
3812 /* If we have something like addb,n then there is no condition
3814 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3825 /* Reset pointers if this was really a ,n for a branch instruction. */
3826 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3832 /* Parse a negated compare/subtract completer returning the
3833 number (for encoding in instrutions) of the given completer.
3835 ISBRANCH specifies whether or not this is parsing a condition
3836 completer for a branch (vs a nullification completer for a
3837 computational instruction. */
3840 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3845 char *name
= *s
+ 1;
3853 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3857 if (strcasecmp (name
, "tr") == 0)
3861 else if (strcmp (name
, "<>") == 0)
3865 else if (strcmp (name
, ">=") == 0)
3869 else if (strcmp (name
, ">") == 0)
3873 else if (strcmp (name
, ">>=") == 0)
3877 else if (strcmp (name
, ">>") == 0)
3881 else if (strcasecmp (name
, "nsv") == 0)
3885 else if (strcasecmp (name
, "ev") == 0)
3889 /* If we have something like addb,n then there is no condition
3891 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3902 /* Reset pointers if this was really a ,n for a branch instruction. */
3903 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3909 /* Parse a non-negated addition completer returning the number
3910 (for encoding in instrutions) of the given completer.
3912 ISBRANCH specifies whether or not this is parsing a condition
3913 completer for a branch (vs a nullification completer for a
3914 computational instruction. */
3917 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3922 char *name
= *s
+ 1;
3930 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3934 if (strcmp (name
, "=") == 0)
3938 else if (strcmp (name
, "<") == 0)
3942 else if (strcmp (name
, "<=") == 0)
3946 else if (strcasecmp (name
, "nuv") == 0)
3950 else if (strcasecmp (name
, "znv") == 0)
3954 else if (strcasecmp (name
, "sv") == 0)
3958 else if (strcasecmp (name
, "od") == 0)
3962 /* If we have something like addb,n then there is no condition
3964 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3975 /* Reset pointers if this was really a ,n for a branch instruction. */
3976 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3982 /* Parse a negated addition completer returning the number
3983 (for encoding in instrutions) of the given completer.
3985 ISBRANCH specifies whether or not this is parsing a condition
3986 completer for a branch (vs a nullification completer for a
3987 computational instruction. */
3990 pa_parse_neg_add_cmpltr (s
, isbranch
)
3995 char *name
= *s
+ 1;
4003 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
4007 if (strcasecmp (name
, "tr") == 0)
4011 else if (strcmp (name
, "<>") == 0)
4015 else if (strcmp (name
, ">=") == 0)
4019 else if (strcmp (name
, ">") == 0)
4023 else if (strcmp (name
, "uv") == 0)
4027 else if (strcmp (name
, "vnz") == 0)
4031 else if (strcasecmp (name
, "nsv") == 0)
4035 else if (strcasecmp (name
, "ev") == 0)
4039 /* If we have something like addb,n then there is no condition
4041 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4052 /* Reset pointers if this was really a ,n for a branch instruction. */
4053 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4059 /* Handle a .BLOCK type pseudo-op. */
4067 unsigned int temp_size
;
4070 temp_size
= get_absolute_expression ();
4072 /* Always fill with zeros, that's what the HP assembler does. */
4075 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4076 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4077 bzero (p
, temp_size
);
4079 /* Convert 2 bytes at a time. */
4081 for (i
= 0; i
< temp_size
; i
+= 2)
4083 md_number_to_chars (p
+ i
,
4085 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4088 pa_undefine_label ();
4089 demand_empty_rest_of_line ();
4093 /* Handle a .CALL pseudo-op. This involves storing away information
4094 about where arguments are to be found so the linker can detect
4095 (and correct) argument location mismatches between caller and callee. */
4101 pa_call_args (&last_call_desc
);
4102 demand_empty_rest_of_line ();
4106 /* Do the dirty work of building a call descriptor which describes
4107 where the caller placed arguments to a function call. */
4110 pa_call_args (call_desc
)
4111 struct call_desc
*call_desc
;
4114 unsigned int temp
, arg_reloc
;
4116 while (!is_end_of_statement ())
4118 name
= input_line_pointer
;
4119 c
= get_symbol_end ();
4120 /* Process a source argument. */
4121 if ((strncasecmp (name
, "argw", 4) == 0))
4123 temp
= atoi (name
+ 4);
4124 p
= input_line_pointer
;
4126 input_line_pointer
++;
4127 name
= input_line_pointer
;
4128 c
= get_symbol_end ();
4129 arg_reloc
= pa_build_arg_reloc (name
);
4130 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4132 /* Process a return value. */
4133 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4135 p
= input_line_pointer
;
4137 input_line_pointer
++;
4138 name
= input_line_pointer
;
4139 c
= get_symbol_end ();
4140 arg_reloc
= pa_build_arg_reloc (name
);
4141 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4145 as_bad ("Invalid .CALL argument: %s", name
);
4147 p
= input_line_pointer
;
4149 if (!is_end_of_statement ())
4150 input_line_pointer
++;
4154 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4157 is_same_frag (frag1
, frag2
)
4164 else if (frag2
== NULL
)
4166 else if (frag1
== frag2
)
4168 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4169 return (is_same_frag (frag1
, frag2
->fr_next
));
4175 /* Build an entry in the UNWIND subspace from the given function
4176 attributes in CALL_INFO. This is not needed for SOM as using
4177 R_ENTRY and R_EXIT relocations allow the linker to handle building
4178 of the unwind spaces. */
4181 pa_build_unwind_subspace (call_info
)
4182 struct call_info
*call_info
;
4185 asection
*seg
, *save_seg
;
4186 subsegT subseg
, save_subseg
;
4190 /* Get into the right seg/subseg. This may involve creating
4191 the seg the first time through. Make sure to have the
4192 old seg/subseg so that we can reset things when we are done. */
4193 subseg
= SUBSEG_UNWIND
;
4194 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4195 if (seg
== ASEC_NULL
)
4197 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4198 bfd_set_section_flags (stdoutput
, seg
,
4199 SEC_READONLY
| SEC_HAS_CONTENTS
4200 | SEC_LOAD
| SEC_RELOC
);
4204 save_subseg
= now_subseg
;
4205 subseg_set (seg
, subseg
);
4208 /* Get some space to hold relocation information for the unwind
4211 call_info
->start_offset_frag
= frag_now
;
4212 call_info
->start_frag_where
= p
- frag_now
->fr_literal
;
4214 /* Relocation info. for start offset of the function. */
4215 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4216 call_info
->start_symbol
, (offsetT
) 0,
4217 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4220 /* We need to search for the first relocation involving the start_symbol of
4221 this call_info descriptor. */
4225 call_info
->start_fix
= seg_info (now_seg
)->fix_root
;
4226 for (fixP
= call_info
->start_fix
; fixP
; fixP
= fixP
->fx_next
)
4228 if (fixP
->fx_addsy
== call_info
->start_symbol
4229 || fixP
->fx_subsy
== call_info
->start_symbol
)
4231 call_info
->start_fix
= fixP
;
4238 call_info
->end_offset_frag
= frag_now
;
4239 call_info
->end_frag_where
= p
- frag_now
->fr_literal
;
4241 /* Relocation info. for end offset of the function. */
4242 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4243 call_info
->end_symbol
, (offsetT
) 0,
4244 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4247 /* We need to search for the first relocation involving the end_symbol of
4248 this call_info descriptor. */
4252 call_info
->end_fix
= seg_info (now_seg
)->fix_root
; /* the default */
4253 for (fixP
= call_info
->end_fix
; fixP
; fixP
= fixP
->fx_next
)
4255 if (fixP
->fx_addsy
== call_info
->end_symbol
4256 || fixP
->fx_subsy
== call_info
->end_symbol
)
4258 call_info
->end_fix
= fixP
;
4265 unwind
= (char *) &call_info
->ci_unwind
;
4266 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4270 FRAG_APPEND_1_CHAR (c
);
4274 /* Return back to the original segment/subsegment. */
4275 subseg_set (save_seg
, save_subseg
);
4279 /* Process a .CALLINFO pseudo-op. This information is used later
4280 to build unwind descriptors and maybe one day to support
4281 .ENTER and .LEAVE. */
4284 pa_callinfo (unused
)
4290 /* .CALLINFO must appear within a procedure definition. */
4291 if (!within_procedure
)
4292 as_bad (".callinfo is not within a procedure definition");
4294 /* Mark the fact that we found the .CALLINFO for the
4295 current procedure. */
4296 callinfo_found
= TRUE
;
4298 /* Iterate over the .CALLINFO arguments. */
4299 while (!is_end_of_statement ())
4301 name
= input_line_pointer
;
4302 c
= get_symbol_end ();
4303 /* Frame size specification. */
4304 if ((strncasecmp (name
, "frame", 5) == 0))
4306 p
= input_line_pointer
;
4308 input_line_pointer
++;
4309 temp
= get_absolute_expression ();
4310 if ((temp
& 0x3) != 0)
4312 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4316 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4317 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4320 /* Entry register (GR, GR and SR) specifications. */
4321 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4323 p
= input_line_pointer
;
4325 input_line_pointer
++;
4326 temp
= get_absolute_expression ();
4327 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4328 even though %r19 is caller saved. I think this is a bug in
4329 the HP assembler, and we are not going to emulate it. */
4330 if (temp
< 3 || temp
> 18)
4331 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4332 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4334 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4336 p
= input_line_pointer
;
4338 input_line_pointer
++;
4339 temp
= get_absolute_expression ();
4340 /* Similarly the HP assembler takes 31 as the high bound even
4341 though %fr21 is the last callee saved floating point register. */
4342 if (temp
< 12 || temp
> 21)
4343 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4344 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4346 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4348 p
= input_line_pointer
;
4350 input_line_pointer
++;
4351 temp
= get_absolute_expression ();
4353 as_bad ("Value for ENTRY_SR must be 3\n");
4354 last_call_info
->entry_sr
= temp
- 2;
4356 /* Note whether or not this function performs any calls. */
4357 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4358 (strncasecmp (name
, "caller", 6) == 0))
4360 p
= input_line_pointer
;
4362 last_call_info
->makes_calls
= 1;
4364 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4366 p
= input_line_pointer
;
4368 last_call_info
->makes_calls
= 0;
4370 /* Should RP be saved into the stack. */
4371 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4373 p
= input_line_pointer
;
4375 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4377 /* Likewise for SP. */
4378 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4380 p
= input_line_pointer
;
4382 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4384 /* Is this an unwindable procedure. If so mark it so
4385 in the unwind descriptor. */
4386 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4388 p
= input_line_pointer
;
4390 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4392 /* Is this an interrupt routine. If so mark it in the
4393 unwind descriptor. */
4394 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4396 p
= input_line_pointer
;
4398 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4402 as_bad ("Invalid .CALLINFO argument: %s", name
);
4404 if (!is_end_of_statement ())
4405 input_line_pointer
++;
4408 demand_empty_rest_of_line ();
4412 /* Switch into the code subspace. */
4418 sd_chain_struct
*sdchain
;
4420 /* First time through it might be necessary to create the
4422 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4424 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4425 pa_def_spaces
[0].spnum
,
4426 pa_def_spaces
[0].loadable
,
4427 pa_def_spaces
[0].defined
,
4428 pa_def_spaces
[0].private,
4429 pa_def_spaces
[0].sort
,
4430 pa_def_spaces
[0].segment
, 0);
4433 SPACE_DEFINED (sdchain
) = 1;
4434 subseg_set (text_section
, SUBSEG_CODE
);
4435 demand_empty_rest_of_line ();
4439 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4440 the .comm pseudo-op has the following symtax:
4442 <label> .comm <length>
4444 where <label> is optional and is a symbol whose address will be the start of
4445 a block of memory <length> bytes long. <length> must be an absolute
4446 expression. <length> bytes will be allocated in the current space
4455 label_symbol_struct
*label_symbol
= pa_get_label ();
4458 symbol
= label_symbol
->lss_label
;
4463 size
= get_absolute_expression ();
4467 /* It is incorrect to check S_IS_DEFINED at this point as
4468 the symbol will *always* be defined. FIXME. How to
4469 correctly determine when this label really as been
4471 if (S_GET_VALUE (symbol
))
4473 if (S_GET_VALUE (symbol
) != size
)
4475 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4476 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4482 S_SET_VALUE (symbol
, size
);
4483 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4484 S_SET_EXTERNAL (symbol
);
4487 demand_empty_rest_of_line ();
4490 /* Process a .COPYRIGHT pseudo-op. */
4493 pa_copyright (unused
)
4500 if (*input_line_pointer
== '\"')
4502 ++input_line_pointer
;
4503 name
= input_line_pointer
;
4504 while ((c
= next_char_of_string ()) >= 0)
4506 c
= *input_line_pointer
;
4507 *input_line_pointer
= '\0';
4508 *(input_line_pointer
- 1) = '\0';
4510 /* FIXME. Not supported */
4513 *input_line_pointer
= c
;
4517 as_bad ("Expected \"-ed string");
4519 pa_undefine_label ();
4520 demand_empty_rest_of_line ();
4523 /* Process a .END pseudo-op. */
4529 demand_empty_rest_of_line ();
4533 /* Process a .ENTER pseudo-op. This is not supported. */
4542 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4548 if (!within_procedure
)
4549 as_bad ("Misplaced .entry. Ignored.");
4552 if (!callinfo_found
)
4553 as_bad ("Missing .callinfo.");
4555 last_call_info
->start_frag
= frag_now
;
4557 demand_empty_rest_of_line ();
4558 within_entry_exit
= TRUE
;
4560 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4561 It will not be on if no .EXPORT pseudo-op exists (static function). */
4562 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4565 /* SOM defers building of unwind descriptors until the link phase.
4566 The assembler is responsible for creating an R_ENTRY relocation
4567 to mark the beginning of a region and hold the unwind bits, and
4568 for creating an R_EXIT relocation to mark the end of the region.
4570 FIXME. ELF should be using the same conventions! The problem
4571 is an unwind requires too much relocation space. Hmmm. Maybe
4572 if we split the unwind bits up between the relocations which
4573 denote the entry and exit points. */
4575 char *where
= frag_more (0);
4577 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4578 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4579 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4580 (char *) &last_call_info
->ci_unwind
.descriptor
);
4587 /* Handle a .EQU pseudo-op. */
4593 label_symbol_struct
*label_symbol
= pa_get_label ();
4598 symbol
= label_symbol
->lss_label
;
4599 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4600 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4605 as_bad (".REG must use a label");
4607 as_bad (".EQU must use a label");
4610 pa_undefine_label ();
4611 demand_empty_rest_of_line ();
4615 /* Helper function. Does processing for the end of a function. This
4616 usually involves creating some relocations or building special
4617 symbols to mark the end of the function. */
4624 where
= frag_more (0);
4627 /* Mark the end of the function, stuff away the location of the frag
4628 for the end of the function, and finally call pa_build_unwind_subspace
4629 to add an entry in the unwind table. */
4630 hppa_elf_mark_end_of_function ();
4631 last_call_info
->end_frag
= frag_now
;
4632 pa_build_unwind_subspace (last_call_info
);
4634 /* SOM defers building of unwind descriptors until the link phase.
4635 The assembler is responsible for creating an R_ENTRY relocation
4636 to mark the beginning of a region and hold the unwind bits, and
4637 for creating an R_EXIT relocation to mark the end of the region.
4639 FIXME. ELF should be using the same conventions! The problem
4640 is an unwind requires too much relocation space. Hmmm. Maybe
4641 if we split the unwind bits up between the relocations which
4642 denote the entry and exit points. */
4643 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4644 last_call_info
->start_symbol
, (offsetT
) 0,
4645 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4650 /* Process a .EXIT pseudo-op. */
4656 if (!within_procedure
)
4657 as_bad (".EXIT must appear within a procedure");
4660 if (!callinfo_found
)
4661 as_bad ("Missing .callinfo");
4664 if (!within_entry_exit
)
4665 as_bad ("No .ENTRY for this .EXIT");
4668 within_entry_exit
= FALSE
;
4673 demand_empty_rest_of_line ();
4677 /* Process a .EXPORT directive. This makes functions external
4678 and provides information such as argument relocation entries
4688 name
= input_line_pointer
;
4689 c
= get_symbol_end ();
4690 /* Make sure the given symbol exists. */
4691 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4693 as_bad ("Cannot define export symbol: %s\n", name
);
4694 p
= input_line_pointer
;
4696 input_line_pointer
++;
4700 /* OK. Set the external bits and process argument relocations. */
4701 S_SET_EXTERNAL (symbol
);
4702 p
= input_line_pointer
;
4704 if (!is_end_of_statement ())
4706 input_line_pointer
++;
4707 pa_type_args (symbol
, 1);
4709 pa_build_symextn_section ();
4714 demand_empty_rest_of_line ();
4718 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4721 pa_type_args (symbolP
, is_export
)
4726 unsigned int temp
, arg_reloc
;
4727 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4728 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4730 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4733 input_line_pointer
+= 8;
4734 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4735 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4736 type
= SYMBOL_TYPE_ABSOLUTE
;
4738 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4740 input_line_pointer
+= 4;
4741 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4742 instead one should be IMPORTing/EXPORTing ENTRY types.
4744 Complain if one tries to EXPORT a CODE type since that's never
4745 done. Both GCC and HP C still try to IMPORT CODE types, so
4746 silently fix them to be ENTRY types. */
4747 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4750 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4752 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4753 type
= SYMBOL_TYPE_ENTRY
;
4757 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4758 type
= SYMBOL_TYPE_CODE
;
4761 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4763 input_line_pointer
+= 4;
4764 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4765 type
= SYMBOL_TYPE_DATA
;
4767 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4769 input_line_pointer
+= 5;
4770 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4771 type
= SYMBOL_TYPE_ENTRY
;
4773 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4775 input_line_pointer
+= 9;
4776 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4777 type
= SYMBOL_TYPE_MILLICODE
;
4779 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4781 input_line_pointer
+= 6;
4782 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4783 type
= SYMBOL_TYPE_PLABEL
;
4785 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4787 input_line_pointer
+= 8;
4788 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4789 type
= SYMBOL_TYPE_PRI_PROG
;
4791 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4793 input_line_pointer
+= 8;
4794 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4795 type
= SYMBOL_TYPE_SEC_PROG
;
4798 /* SOM requires much more information about symbol types
4799 than BFD understands. This is how we get this information
4800 to the SOM BFD backend. */
4801 #ifdef obj_set_symbol_type
4802 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4805 /* Now that the type of the exported symbol has been handled,
4806 handle any argument relocation information. */
4807 while (!is_end_of_statement ())
4809 if (*input_line_pointer
== ',')
4810 input_line_pointer
++;
4811 name
= input_line_pointer
;
4812 c
= get_symbol_end ();
4813 /* Argument sources. */
4814 if ((strncasecmp (name
, "argw", 4) == 0))
4816 p
= input_line_pointer
;
4818 input_line_pointer
++;
4819 temp
= atoi (name
+ 4);
4820 name
= input_line_pointer
;
4821 c
= get_symbol_end ();
4822 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4823 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4824 *input_line_pointer
= c
;
4826 /* The return value. */
4827 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4829 p
= input_line_pointer
;
4831 input_line_pointer
++;
4832 name
= input_line_pointer
;
4833 c
= get_symbol_end ();
4834 arg_reloc
= pa_build_arg_reloc (name
);
4835 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4836 *input_line_pointer
= c
;
4838 /* Privelege level. */
4839 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4841 p
= input_line_pointer
;
4843 input_line_pointer
++;
4844 temp
= atoi (input_line_pointer
);
4845 c
= get_symbol_end ();
4846 *input_line_pointer
= c
;
4850 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4851 p
= input_line_pointer
;
4854 if (!is_end_of_statement ())
4855 input_line_pointer
++;
4859 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4860 assembly file must either be defined in the assembly file, or
4861 explicitly IMPORTED from another. */
4870 name
= input_line_pointer
;
4871 c
= get_symbol_end ();
4873 symbol
= symbol_find_or_make (name
);
4874 p
= input_line_pointer
;
4877 if (!is_end_of_statement ())
4879 input_line_pointer
++;
4880 pa_type_args (symbol
, 0);
4884 /* Sigh. To be compatable with the HP assembler and to help
4885 poorly written assembly code, we assign a type based on
4886 the the current segment. Note only BSF_FUNCTION really
4887 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4888 if (now_seg
== text_section
)
4889 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4891 /* If the section is undefined, then the symbol is undefined
4892 Since this is an import, leave the section undefined. */
4893 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4896 demand_empty_rest_of_line ();
4900 /* Handle a .LABEL pseudo-op. */
4908 name
= input_line_pointer
;
4909 c
= get_symbol_end ();
4911 if (strlen (name
) > 0)
4914 p
= input_line_pointer
;
4919 as_warn ("Missing label name on .LABEL");
4922 if (!is_end_of_statement ())
4924 as_warn ("extra .LABEL arguments ignored.");
4925 ignore_rest_of_line ();
4927 demand_empty_rest_of_line ();
4931 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4940 /* Handle a .ORIGIN pseudo-op. */
4947 pa_undefine_label ();
4951 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4952 is for static functions. FIXME. Should share more code with .EXPORT. */
4961 name
= input_line_pointer
;
4962 c
= get_symbol_end ();
4964 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4966 as_bad ("Cannot define static symbol: %s\n", name
);
4967 p
= input_line_pointer
;
4969 input_line_pointer
++;
4973 S_CLEAR_EXTERNAL (symbol
);
4974 p
= input_line_pointer
;
4976 if (!is_end_of_statement ())
4978 input_line_pointer
++;
4979 pa_type_args (symbol
, 0);
4983 demand_empty_rest_of_line ();
4987 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4988 of a procedure from a syntatical point of view. */
4994 struct call_info
*call_info
;
4996 if (within_procedure
)
4997 as_fatal ("Nested procedures");
4999 /* Reset global variables for new procedure. */
5000 callinfo_found
= FALSE
;
5001 within_procedure
= TRUE
;
5003 /* Create another call_info structure. */
5004 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
5007 as_fatal ("Cannot allocate unwind descriptor\n");
5009 bzero (call_info
, sizeof (struct call_info
));
5011 call_info
->ci_next
= NULL
;
5013 if (call_info_root
== NULL
)
5015 call_info_root
= call_info
;
5016 last_call_info
= call_info
;
5020 last_call_info
->ci_next
= call_info
;
5021 last_call_info
= call_info
;
5024 /* set up defaults on call_info structure */
5026 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5027 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5028 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5029 call_info
->entry_sr
= ~0;
5030 call_info
->makes_calls
= 1;
5032 /* If we got a .PROC pseudo-op, we know that the function is defined
5033 locally. Make sure it gets into the symbol table. */
5035 label_symbol_struct
*label_symbol
= pa_get_label ();
5039 if (label_symbol
->lss_label
)
5041 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5042 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5045 as_bad ("Missing function name for .PROC (corrupted label)");
5048 as_bad ("Missing function name for .PROC");
5051 demand_empty_rest_of_line ();
5055 /* Process the syntatical end of a procedure. Make sure all the
5056 appropriate pseudo-ops were found within the procedure. */
5063 if (!within_procedure
)
5064 as_bad ("misplaced .procend");
5066 if (!callinfo_found
)
5067 as_bad ("Missing .callinfo for this procedure");
5069 if (within_entry_exit
)
5070 as_bad ("Missing .EXIT for a .ENTRY");
5073 /* ELF needs to mark the end of each function so that it can compute
5074 the size of the function (apparently its needed in the symbol table. */
5075 hppa_elf_mark_end_of_function ();
5078 within_procedure
= FALSE
;
5079 demand_empty_rest_of_line ();
5083 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5084 then create a new space entry to hold the information specified
5085 by the parameters to the .SPACE directive. */
5087 static sd_chain_struct
*
5088 pa_parse_space_stmt (space_name
, create_flag
)
5092 char *name
, *ptemp
, c
;
5093 char loadable
, defined
, private, sort
;
5095 asection
*seg
= NULL
;
5096 sd_chain_struct
*space
;
5098 /* load default values */
5104 if (strcasecmp (space_name
, "$TEXT$") == 0)
5106 seg
= pa_def_spaces
[0].segment
;
5107 sort
= pa_def_spaces
[0].sort
;
5109 else if (strcasecmp (space_name
, "$PRIVATE$") == 0)
5111 seg
= pa_def_spaces
[1].segment
;
5112 sort
= pa_def_spaces
[1].sort
;
5115 if (!is_end_of_statement ())
5117 print_errors
= FALSE
;
5118 ptemp
= input_line_pointer
+ 1;
5119 /* First see if the space was specified as a number rather than
5120 as a name. According to the PA assembly manual the rest of
5121 the line should be ignored. */
5122 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5123 input_line_pointer
= ptemp
;
5126 while (!is_end_of_statement ())
5128 input_line_pointer
++;
5129 name
= input_line_pointer
;
5130 c
= get_symbol_end ();
5131 if ((strncasecmp (name
, "SPNUM", 5) == 0))
5133 *input_line_pointer
= c
;
5134 input_line_pointer
++;
5135 spnum
= get_absolute_expression ();
5137 else if ((strncasecmp (name
, "SORT", 4) == 0))
5139 *input_line_pointer
= c
;
5140 input_line_pointer
++;
5141 sort
= get_absolute_expression ();
5143 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5145 *input_line_pointer
= c
;
5148 else if ((strncasecmp (name
, "NOTDEFINED", 10) == 0))
5150 *input_line_pointer
= c
;
5153 else if ((strncasecmp (name
, "PRIVATE", 7) == 0))
5155 *input_line_pointer
= c
;
5160 as_bad ("Invalid .SPACE argument");
5161 *input_line_pointer
= c
;
5162 if (!is_end_of_statement ())
5163 input_line_pointer
++;
5167 print_errors
= TRUE
;
5170 if (create_flag
&& seg
== NULL
)
5171 seg
= subseg_new (space_name
, 0);
5173 /* If create_flag is nonzero, then create the new space with
5174 the attributes computed above. Else set the values in
5175 an already existing space -- this can only happen for
5176 the first occurence of a built-in space. */
5178 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5179 private, sort
, seg
, 1);
5182 space
= is_defined_space (space_name
);
5183 SPACE_SPNUM (space
) = spnum
;
5184 SPACE_LOADABLE (space
) = loadable
& 1;
5185 SPACE_DEFINED (space
) = defined
& 1;
5186 SPACE_USER_DEFINED (space
) = 1;
5187 SPACE_PRIVATE (space
) = private & 1;
5188 SPACE_SORT (space
) = sort
& 0xff;
5189 space
->sd_seg
= seg
;
5192 #ifdef obj_set_section_attributes
5193 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5199 /* Handle a .SPACE pseudo-op; this switches the current space to the
5200 given space, creating the new space if necessary. */
5206 char *name
, c
, *space_name
, *save_s
;
5208 sd_chain_struct
*sd_chain
;
5210 if (within_procedure
)
5212 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5213 ignore_rest_of_line ();
5217 /* Check for some of the predefined spaces. FIXME: most of the code
5218 below is repeated several times, can we extract the common parts
5219 and place them into a subroutine or something similar? */
5220 if (strncasecmp (input_line_pointer
, "$text$", 6) == 0)
5222 input_line_pointer
+= 6;
5223 sd_chain
= is_defined_space ("$TEXT$");
5224 if (sd_chain
== NULL
)
5225 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5226 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5227 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5229 current_space
= sd_chain
;
5230 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5232 = pa_subsegment_to_subspace (text_section
,
5233 sd_chain
->sd_last_subseg
);
5234 demand_empty_rest_of_line ();
5237 if (strncasecmp (input_line_pointer
, "$private$", 9) == 0)
5239 input_line_pointer
+= 9;
5240 sd_chain
= is_defined_space ("$PRIVATE$");
5241 if (sd_chain
== NULL
)
5242 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5243 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5244 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5246 current_space
= sd_chain
;
5247 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5249 = pa_subsegment_to_subspace (data_section
,
5250 sd_chain
->sd_last_subseg
);
5251 demand_empty_rest_of_line ();
5254 if (!strncasecmp (input_line_pointer
,
5255 GDB_DEBUG_SPACE_NAME
,
5256 strlen (GDB_DEBUG_SPACE_NAME
)))
5258 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5259 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5260 if (sd_chain
== NULL
)
5261 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5262 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5263 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5265 current_space
= sd_chain
;
5268 asection
*gdb_section
5269 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5271 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5273 = pa_subsegment_to_subspace (gdb_section
,
5274 sd_chain
->sd_last_subseg
);
5276 demand_empty_rest_of_line ();
5280 /* It could be a space specified by number. */
5282 save_s
= input_line_pointer
;
5283 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5285 if (sd_chain
= pa_find_space_by_number (temp
))
5287 current_space
= sd_chain
;
5289 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5291 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5292 sd_chain
->sd_last_subseg
);
5293 demand_empty_rest_of_line ();
5298 /* Not a number, attempt to create a new space. */
5300 input_line_pointer
= save_s
;
5301 name
= input_line_pointer
;
5302 c
= get_symbol_end ();
5303 space_name
= xmalloc (strlen (name
) + 1);
5304 strcpy (space_name
, name
);
5305 *input_line_pointer
= c
;
5307 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5308 current_space
= sd_chain
;
5310 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5311 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5312 sd_chain
->sd_last_subseg
);
5313 demand_empty_rest_of_line ();
5318 /* Switch to a new space. (I think). FIXME. */
5327 sd_chain_struct
*space
;
5329 name
= input_line_pointer
;
5330 c
= get_symbol_end ();
5331 space
= is_defined_space (name
);
5335 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5338 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5340 *input_line_pointer
= c
;
5341 demand_empty_rest_of_line ();
5345 /* If VALUE is an exact power of two between zero and 2^31, then
5346 return log2 (VALUE). Else return -1. */
5354 while ((1 << shift
) != value
&& shift
< 32)
5363 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5364 given subspace, creating the new subspace if necessary.
5366 FIXME. Should mirror pa_space more closely, in particular how
5367 they're broken up into subroutines. */
5370 pa_subspace (unused
)
5373 char *name
, *ss_name
, *alias
, c
;
5374 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5375 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5376 sd_chain_struct
*space
;
5377 ssd_chain_struct
*ssd
;
5380 if (within_procedure
)
5382 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5383 ignore_rest_of_line ();
5387 name
= input_line_pointer
;
5388 c
= get_symbol_end ();
5389 ss_name
= xmalloc (strlen (name
) + 1);
5390 strcpy (ss_name
, name
);
5391 *input_line_pointer
= c
;
5393 /* Load default values. */
5406 space
= current_space
;
5407 ssd
= is_defined_subspace (ss_name
);
5408 /* Allow user to override the builtin attributes of subspaces. But
5409 only allow the attributes to be changed once! */
5410 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5412 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5413 if (!is_end_of_statement ())
5414 as_warn ("Parameters of an existing subspace can\'t be modified");
5415 demand_empty_rest_of_line ();
5420 /* A new subspace. Load default values if it matches one of
5421 the builtin subspaces. */
5423 while (pa_def_subspaces
[i
].name
)
5425 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5427 loadable
= pa_def_subspaces
[i
].loadable
;
5428 common
= pa_def_subspaces
[i
].common
;
5429 dup_common
= pa_def_subspaces
[i
].dup_common
;
5430 code_only
= pa_def_subspaces
[i
].code_only
;
5431 zero
= pa_def_subspaces
[i
].zero
;
5432 space_index
= pa_def_subspaces
[i
].space_index
;
5433 alignment
= pa_def_subspaces
[i
].alignment
;
5434 quadrant
= pa_def_subspaces
[i
].quadrant
;
5435 access
= pa_def_subspaces
[i
].access
;
5436 sort
= pa_def_subspaces
[i
].sort
;
5437 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5438 alias
= pa_def_subspaces
[i
].alias
;
5445 /* We should be working with a new subspace now. Fill in
5446 any information as specified by the user. */
5447 if (!is_end_of_statement ())
5449 input_line_pointer
++;
5450 while (!is_end_of_statement ())
5452 name
= input_line_pointer
;
5453 c
= get_symbol_end ();
5454 if ((strncasecmp (name
, "QUAD", 4) == 0))
5456 *input_line_pointer
= c
;
5457 input_line_pointer
++;
5458 quadrant
= get_absolute_expression ();
5460 else if ((strncasecmp (name
, "ALIGN", 5) == 0))
5462 *input_line_pointer
= c
;
5463 input_line_pointer
++;
5464 alignment
= get_absolute_expression ();
5465 if (log2 (alignment
) == -1)
5467 as_bad ("Alignment must be a power of 2");
5471 else if ((strncasecmp (name
, "ACCESS", 6) == 0))
5473 *input_line_pointer
= c
;
5474 input_line_pointer
++;
5475 access
= get_absolute_expression ();
5477 else if ((strncasecmp (name
, "SORT", 4) == 0))
5479 *input_line_pointer
= c
;
5480 input_line_pointer
++;
5481 sort
= get_absolute_expression ();
5483 else if ((strncasecmp (name
, "CODE_ONLY", 9) == 0))
5485 *input_line_pointer
= c
;
5488 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5490 *input_line_pointer
= c
;
5493 else if ((strncasecmp (name
, "COMMON", 6) == 0))
5495 *input_line_pointer
= c
;
5498 else if ((strncasecmp (name
, "DUP_COMM", 8) == 0))
5500 *input_line_pointer
= c
;
5503 else if ((strncasecmp (name
, "ZERO", 4) == 0))
5505 *input_line_pointer
= c
;
5508 else if ((strncasecmp (name
, "FIRST", 5) == 0))
5509 as_bad ("FIRST not supported as a .SUBSPACE argument");
5511 as_bad ("Invalid .SUBSPACE argument");
5512 if (!is_end_of_statement ())
5513 input_line_pointer
++;
5517 /* Compute a reasonable set of BFD flags based on the information
5518 in the .subspace directive. */
5519 applicable
= bfd_applicable_section_flags (stdoutput
);
5522 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5525 if (common
|| dup_common
)
5526 flags
|= SEC_IS_COMMON
;
5528 /* This is a zero-filled subspace (eg BSS). */
5532 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5533 applicable
&= flags
;
5535 /* If this is an existing subspace, then we want to use the
5536 segment already associated with the subspace.
5538 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5539 lots of sections. It might be a problem in the PA ELF
5540 code, I do not know yet. For now avoid creating anything
5541 but the "standard" sections for ELF. */
5543 section
= ssd
->ssd_seg
;
5545 section
= subseg_new (alias
, 0);
5546 else if (!alias
&& USE_ALIASES
)
5548 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5549 demand_empty_rest_of_line ();
5553 section
= subseg_new (ss_name
, 0);
5555 /* Now set the flags. */
5556 bfd_set_section_flags (stdoutput
, section
, applicable
);
5558 /* Record any alignment request for this section. */
5559 record_alignment (section
, log2 (alignment
));
5561 /* Set the starting offset for this section. */
5562 bfd_set_section_vma (stdoutput
, section
,
5563 pa_subspace_start (space
, quadrant
));
5565 /* Now that all the flags are set, update an existing subspace,
5566 or create a new one. */
5569 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5570 code_only
, common
, dup_common
,
5571 sort
, zero
, access
, space_index
,
5572 alignment
, quadrant
,
5575 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5577 dup_common
, zero
, sort
,
5578 access
, space_index
,
5579 alignment
, quadrant
, section
);
5581 demand_empty_rest_of_line ();
5582 current_subspace
->ssd_seg
= section
;
5583 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5585 SUBSPACE_DEFINED (current_subspace
) = 1;
5590 /* Create default space and subspace dictionaries. */
5597 space_dict_root
= NULL
;
5598 space_dict_last
= NULL
;
5601 while (pa_def_spaces
[i
].name
)
5605 /* Pick the right name to use for the new section. */
5606 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5607 name
= pa_def_spaces
[i
].alias
;
5609 name
= pa_def_spaces
[i
].name
;
5611 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5612 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5613 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5614 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5615 pa_def_spaces
[i
].segment
, 0);
5620 while (pa_def_subspaces
[i
].name
)
5623 int applicable
, subsegment
;
5624 asection
*segment
= NULL
;
5625 sd_chain_struct
*space
;
5627 /* Pick the right name for the new section and pick the right
5628 subsegment number. */
5629 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5631 name
= pa_def_subspaces
[i
].alias
;
5632 subsegment
= pa_def_subspaces
[i
].subsegment
;
5636 name
= pa_def_subspaces
[i
].name
;
5640 /* Create the new section. */
5641 segment
= subseg_new (name
, subsegment
);
5644 /* For SOM we want to replace the standard .text, .data, and .bss
5645 sections with our own. */
5646 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5648 text_section
= segment
;
5649 applicable
= bfd_applicable_section_flags (stdoutput
);
5650 bfd_set_section_flags (stdoutput
, text_section
,
5651 applicable
& (SEC_ALLOC
| SEC_LOAD
5652 | SEC_RELOC
| SEC_CODE
5654 | SEC_HAS_CONTENTS
));
5656 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5658 data_section
= segment
;
5659 applicable
= bfd_applicable_section_flags (stdoutput
);
5660 bfd_set_section_flags (stdoutput
, data_section
,
5661 applicable
& (SEC_ALLOC
| SEC_LOAD
5663 | SEC_HAS_CONTENTS
));
5667 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5669 bss_section
= segment
;
5670 applicable
= bfd_applicable_section_flags (stdoutput
);
5671 bfd_set_section_flags (stdoutput
, bss_section
,
5672 applicable
& SEC_ALLOC
);
5675 /* Find the space associated with this subspace. */
5676 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5677 def_space_index
].segment
);
5680 as_fatal ("Internal error: Unable to find containing space for %s.",
5681 pa_def_subspaces
[i
].name
);
5684 create_new_subspace (space
, name
,
5685 pa_def_subspaces
[i
].loadable
,
5686 pa_def_subspaces
[i
].code_only
,
5687 pa_def_subspaces
[i
].common
,
5688 pa_def_subspaces
[i
].dup_common
,
5689 pa_def_subspaces
[i
].zero
,
5690 pa_def_subspaces
[i
].sort
,
5691 pa_def_subspaces
[i
].access
,
5692 pa_def_subspaces
[i
].space_index
,
5693 pa_def_subspaces
[i
].alignment
,
5694 pa_def_subspaces
[i
].quadrant
,
5702 /* Create a new space NAME, with the appropriate flags as defined
5703 by the given parameters.
5705 Add the new space to the space dictionary chain in numerical
5706 order as defined by the SORT entries. */
5708 static sd_chain_struct
*
5709 create_new_space (name
, spnum
, loadable
, defined
, private,
5710 sort
, seg
, user_defined
)
5720 sd_chain_struct
*chain_entry
;
5722 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5724 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5727 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5728 strcpy (SPACE_NAME (chain_entry
), name
);
5729 SPACE_NAME_INDEX (chain_entry
) = 0;
5730 SPACE_LOADABLE (chain_entry
) = loadable
;
5731 SPACE_DEFINED (chain_entry
) = defined
;
5732 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5733 SPACE_PRIVATE (chain_entry
) = private;
5734 SPACE_SPNUM (chain_entry
) = spnum
;
5735 SPACE_SORT (chain_entry
) = sort
;
5737 chain_entry
->sd_seg
= seg
;
5738 chain_entry
->sd_last_subseg
= -1;
5739 chain_entry
->sd_next
= NULL
;
5741 /* Find spot for the new space based on its sort key. */
5742 if (!space_dict_last
)
5743 space_dict_last
= chain_entry
;
5745 if (space_dict_root
== NULL
)
5746 space_dict_root
= chain_entry
;
5749 sd_chain_struct
*chain_pointer
;
5750 sd_chain_struct
*prev_chain_pointer
;
5752 chain_pointer
= space_dict_root
;
5753 prev_chain_pointer
= NULL
;
5755 while (chain_pointer
)
5757 if (SPACE_SORT (chain_pointer
) <= SPACE_SORT (chain_entry
))
5759 prev_chain_pointer
= chain_pointer
;
5760 chain_pointer
= chain_pointer
->sd_next
;
5766 /* At this point we've found the correct place to add the new
5767 entry. So add it and update the linked lists as appropriate. */
5768 if (prev_chain_pointer
)
5770 chain_entry
->sd_next
= chain_pointer
;
5771 prev_chain_pointer
->sd_next
= chain_entry
;
5775 space_dict_root
= chain_entry
;
5776 chain_entry
->sd_next
= chain_pointer
;
5779 if (chain_entry
->sd_next
== NULL
)
5780 space_dict_last
= chain_entry
;
5783 /* This is here to catch predefined spaces which do not get
5784 modified by the user's input. Another call is found at
5785 the bottom of pa_parse_space_stmt to handle cases where
5786 the user modifies a predefined space. */
5787 #ifdef obj_set_section_attributes
5788 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5794 /* Create a new subspace NAME, with the appropriate flags as defined
5795 by the given parameters.
5797 Add the new subspace to the subspace dictionary chain in numerical
5798 order as defined by the SORT entries. */
5800 static ssd_chain_struct
*
5801 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5802 dup_common
, is_zero
, sort
, access
, space_index
,
5803 alignment
, quadrant
, seg
)
5804 sd_chain_struct
*space
;
5806 char loadable
, code_only
, common
, dup_common
, is_zero
;
5814 ssd_chain_struct
*chain_entry
;
5816 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5818 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5820 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5821 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5823 SUBSPACE_ACCESS (chain_entry
) = access
;
5824 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5825 SUBSPACE_COMMON (chain_entry
) = common
;
5826 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5827 SUBSPACE_SORT (chain_entry
) = sort
;
5828 SUBSPACE_CODE_ONLY (chain_entry
) = code_only
;
5829 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5830 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5831 SUBSPACE_SUBSPACE_START (chain_entry
) = pa_subspace_start (space
, quadrant
);
5832 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5833 SUBSPACE_ZERO (chain_entry
) = is_zero
;
5835 /* Initialize subspace_defined. When we hit a .subspace directive
5836 we'll set it to 1 which "locks-in" the subspace attributes. */
5837 SUBSPACE_DEFINED (chain_entry
) = 0;
5839 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5840 chain_entry
->ssd_seg
= seg
;
5841 chain_entry
->ssd_last_align
= 1;
5842 chain_entry
->ssd_next
= NULL
;
5844 /* Find spot for the new subspace based on its sort key. */
5845 if (space
->sd_subspaces
== NULL
)
5846 space
->sd_subspaces
= chain_entry
;
5849 ssd_chain_struct
*chain_pointer
;
5850 ssd_chain_struct
*prev_chain_pointer
;
5852 chain_pointer
= space
->sd_subspaces
;
5853 prev_chain_pointer
= NULL
;
5855 while (chain_pointer
)
5857 if (SUBSPACE_SORT (chain_pointer
) <= SUBSPACE_SORT (chain_entry
))
5859 prev_chain_pointer
= chain_pointer
;
5860 chain_pointer
= chain_pointer
->ssd_next
;
5867 /* Now we have somewhere to put the new entry. Insert it and update
5869 if (prev_chain_pointer
)
5871 chain_entry
->ssd_next
= chain_pointer
;
5872 prev_chain_pointer
->ssd_next
= chain_entry
;
5876 space
->sd_subspaces
= chain_entry
;
5877 chain_entry
->ssd_next
= chain_pointer
;
5881 #ifdef obj_set_subsection_attributes
5882 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5890 /* Update the information for the given subspace based upon the
5891 various arguments. Return the modified subspace chain entry. */
5893 static ssd_chain_struct
*
5894 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5895 zero
, access
, space_index
, alignment
, quadrant
, section
)
5896 sd_chain_struct
*space
;
5910 ssd_chain_struct
*chain_entry
;
5912 if ((chain_entry
= is_defined_subspace (name
)))
5914 SUBSPACE_ACCESS (chain_entry
) = access
;
5915 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5916 SUBSPACE_COMMON (chain_entry
) = common
;
5917 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5918 SUBSPACE_CODE_ONLY (chain_entry
) = 1;
5919 SUBSPACE_SORT (chain_entry
) = sort
;
5920 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5921 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5922 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5923 SUBSPACE_ZERO (chain_entry
) = zero
;
5928 #ifdef obj_set_subsection_attributes
5929 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5937 /* Return the space chain entry for the space with the name NAME or
5938 NULL if no such space exists. */
5940 static sd_chain_struct
*
5941 is_defined_space (name
)
5944 sd_chain_struct
*chain_pointer
;
5946 for (chain_pointer
= space_dict_root
;
5948 chain_pointer
= chain_pointer
->sd_next
)
5950 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5951 return chain_pointer
;
5954 /* No mapping from segment to space was found. Return NULL. */
5958 /* Find and return the space associated with the given seg. If no mapping
5959 from the given seg to a space is found, then return NULL.
5961 Unlike subspaces, the number of spaces is not expected to grow much,
5962 so a linear exhaustive search is OK here. */
5964 static sd_chain_struct
*
5965 pa_segment_to_space (seg
)
5968 sd_chain_struct
*space_chain
;
5970 /* Walk through each space looking for the correct mapping. */
5971 for (space_chain
= space_dict_root
;
5973 space_chain
= space_chain
->sd_next
)
5975 if (space_chain
->sd_seg
== seg
)
5979 /* Mapping was not found. Return NULL. */
5983 /* Return the space chain entry for the subspace with the name NAME or
5984 NULL if no such subspace exists.
5986 Uses a linear search through all the spaces and subspaces, this may
5987 not be appropriate if we ever being placing each function in its
5990 static ssd_chain_struct
*
5991 is_defined_subspace (name
)
5994 sd_chain_struct
*space_chain
;
5995 ssd_chain_struct
*subspace_chain
;
5997 /* Walk through each space. */
5998 for (space_chain
= space_dict_root
;
6000 space_chain
= space_chain
->sd_next
)
6002 /* Walk through each subspace looking for a name which matches. */
6003 for (subspace_chain
= space_chain
->sd_subspaces
;
6005 subspace_chain
= subspace_chain
->ssd_next
)
6006 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
6007 return subspace_chain
;
6010 /* Subspace wasn't found. Return NULL. */
6014 /* Find and return the subspace associated with the given seg. If no
6015 mapping from the given seg to a subspace is found, then return NULL.
6017 If we ever put each procedure/function within its own subspace
6018 (to make life easier on the compiler and linker), then this will have
6019 to become more efficient. */
6021 static ssd_chain_struct
*
6022 pa_subsegment_to_subspace (seg
, subseg
)
6026 sd_chain_struct
*space_chain
;
6027 ssd_chain_struct
*subspace_chain
;
6029 /* Walk through each space. */
6030 for (space_chain
= space_dict_root
;
6032 space_chain
= space_chain
->sd_next
)
6034 if (space_chain
->sd_seg
== seg
)
6036 /* Walk through each subspace within each space looking for
6037 the correct mapping. */
6038 for (subspace_chain
= space_chain
->sd_subspaces
;
6040 subspace_chain
= subspace_chain
->ssd_next
)
6041 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6042 return subspace_chain
;
6046 /* No mapping from subsegment to subspace found. Return NULL. */
6050 /* Given a number, try and find a space with the name number.
6052 Return a pointer to a space dictionary chain entry for the space
6053 that was found or NULL on failure. */
6055 static sd_chain_struct
*
6056 pa_find_space_by_number (number
)
6059 sd_chain_struct
*space_chain
;
6061 for (space_chain
= space_dict_root
;
6063 space_chain
= space_chain
->sd_next
)
6065 if (SPACE_SPNUM (space_chain
) == number
)
6069 /* No appropriate space found. Return NULL. */
6073 /* Return the starting address for the given subspace. If the starting
6074 address is unknown then return zero. */
6077 pa_subspace_start (space
, quadrant
)
6078 sd_chain_struct
*space
;
6081 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6082 is not correct for the PA OSF1 port. */
6083 if ((strcasecmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6085 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6091 /* FIXME. Needs documentation. */
6093 pa_next_subseg (space
)
6094 sd_chain_struct
*space
;
6097 space
->sd_last_subseg
++;
6098 return space
->sd_last_subseg
;
6101 /* Helper function for pa_stringer. Used to find the end of
6108 unsigned int c
= *s
& CHAR_MASK
;
6120 /* Handle a .STRING type pseudo-op. */
6123 pa_stringer (append_zero
)
6126 char *s
, num_buf
[4];
6130 /* Preprocess the string to handle PA-specific escape sequences.
6131 For example, \xDD where DD is a hexidecimal number should be
6132 changed to \OOO where OOO is an octal number. */
6134 /* Skip the opening quote. */
6135 s
= input_line_pointer
+ 1;
6137 while (is_a_char (c
= pa_stringer_aux (s
++)))
6144 /* Handle \x<num>. */
6147 unsigned int number
;
6152 /* Get pas the 'x'. */
6154 for (num_digit
= 0, number
= 0, dg
= *s
;
6156 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6157 || (dg
>= 'A' && dg
<= 'F'));
6161 number
= number
* 16 + dg
- '0';
6162 else if (dg
>= 'a' && dg
<= 'f')
6163 number
= number
* 16 + dg
- 'a' + 10;
6165 number
= number
* 16 + dg
- 'A' + 10;
6175 sprintf (num_buf
, "%02o", number
);
6178 sprintf (num_buf
, "%03o", number
);
6181 for (i
= 0; i
<= num_digit
; i
++)
6182 s_start
[i
] = num_buf
[i
];
6186 /* This might be a "\"", skip over the escaped char. */
6193 stringer (append_zero
);
6194 pa_undefine_label ();
6197 /* Handle a .VERSION pseudo-op. */
6204 pa_undefine_label ();
6207 /* Just like a normal cons, but when finished we have to undefine
6208 the latest space label. */
6215 pa_undefine_label ();
6218 /* Switch to the data space. As usual delete our label. */
6225 pa_undefine_label ();
6228 /* FIXME. What's the purpose of this pseudo-op? */
6234 pa_undefine_label ();
6237 /* Like float_cons, but we need to undefine our label. */
6240 pa_float_cons (float_type
)
6243 float_cons (float_type
);
6244 pa_undefine_label ();
6247 /* Like s_fill, but delete our label when finished. */
6254 pa_undefine_label ();
6257 /* Like lcomm, but delete our label when finished. */
6260 pa_lcomm (needs_align
)
6263 s_lcomm (needs_align
);
6264 pa_undefine_label ();
6267 /* Like lsym, but delete our label when finished. */
6274 pa_undefine_label ();
6277 /* Switch to the text space. Like s_text, but delete our
6278 label when finished. */
6284 pa_undefine_label ();
6287 /* On the PA relocations which involve function symbols must not be
6288 adjusted. This so that the linker can know when/how to create argument
6289 relocation stubs for indirect calls and calls to static functions.
6291 FIXME. Also reject R_HPPA relocations which are 32 bits
6292 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6293 needs to generate relocations to push the addend and symbol value
6294 onto the stack, add them, then pop the value off the stack and
6295 use it in a relocation -- yuk. */
6298 hppa_fix_adjustable (fixp
)
6301 struct hppa_fix_struct
*hppa_fix
;
6303 hppa_fix
= fixp
->tc_fix_data
;
6305 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6308 if (fixp
->fx_addsy
== 0
6309 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6315 /* Return nonzero if the fixup in FIXP will require a relocation,
6316 even it if appears that the fixup could be completely handled
6320 hppa_force_relocation (fixp
)
6323 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
6326 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6330 #define stub_needed(CALLER, CALLEE) \
6331 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6333 /* It is necessary to force PC-relative calls/jumps to have a relocation
6334 entry if they're going to need either a argument relocation or long
6335 call stub. FIXME. Can't we need the same for absolute calls? */
6337 && (stub_needed (((obj_symbol_type
*)
6338 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6339 hppa_fixp
->fx_arg_reloc
)))
6344 /* No need (yet) to force another relocations to be emitted. */
6348 /* Now for some ELF specific code. FIXME. */
6350 static symext_chainS
*symext_rootP
;
6351 static symext_chainS
*symext_lastP
;
6353 /* Mark the end of a function so that it's possible to compute
6354 the size of the function in hppa_elf_final_processing. */
6357 hppa_elf_mark_end_of_function ()
6359 /* ELF does not have EXIT relocations. All we do is create a
6360 temporary symbol marking the end of the function. */
6361 char *name
= (char *)
6362 xmalloc (strlen ("L$\001end_") +
6363 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6369 strcpy (name
, "L$\001end_");
6370 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6372 /* If we have a .exit followed by a .procend, then the
6373 symbol will have already been defined. */
6374 symbolP
= symbol_find (name
);
6377 /* The symbol has already been defined! This can
6378 happen if we have a .exit followed by a .procend.
6380 This is *not* an error. All we want to do is free
6381 the memory we just allocated for the name and continue. */
6386 /* symbol value should be the offset of the
6387 last instruction of the function */
6388 symbolP
= symbol_new (name
, now_seg
,
6389 (valueT
) (obstack_next_free (&frags
)
6390 - frag_now
->fr_literal
- 4),
6394 symbolP
->bsym
->flags
= BSF_LOCAL
;
6395 symbol_table_insert (symbolP
);
6399 last_call_info
->end_symbol
= symbolP
;
6401 as_bad ("Symbol '%s' could not be created.", name
);
6405 as_bad ("No memory for symbol name.");
6407 /* Stuff away the location of the frag for the end of the function,
6408 and call pa_build_unwind_subspace to add an entry in the unwind
6410 last_call_info
->end_frag
= frag_now
;
6413 /* Do any symbol processing requested by the target-cpu or target-format. */
6416 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6418 elf_symbol_type
*symbolP
;
6421 symext_chainS
*symextP
;
6422 unsigned int arg_reloc
;
6424 /* Only functions can have argument relocations. */
6425 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6428 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6430 /* If there are no argument relocation bits, then no relocation is
6431 necessary. Do not add this to the symextn section. */
6435 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6437 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6438 symextP
[0].next
= &symextP
[1];
6440 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6441 symextP
[1].next
= NULL
;
6443 if (symext_rootP
== NULL
)
6445 symext_rootP
= &symextP
[0];
6446 symext_lastP
= &symextP
[1];
6450 symext_lastP
->next
= &symextP
[0];
6451 symext_lastP
= &symextP
[1];
6455 /* Make sections needed by the target cpu and/or target format. */
6457 hppa_tc_make_sections (abfd
)
6460 symext_chainS
*symextP
;
6462 asection
*symextn_sec
;
6463 segT save_seg
= now_seg
;
6464 subsegT save_subseg
= now_subseg
;
6466 /* Build the symbol extension section. */
6467 hppa_tc_make_symextn_section ();
6469 /* Force some calculation to occur. */
6470 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6472 hppa_elf_stub_finish (abfd
);
6474 /* If no symbols for the symbol extension section, then stop now. */
6475 if (symext_rootP
== NULL
)
6478 /* Count the number of symbols for the symbol extension section. */
6479 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6482 size
= sizeof (symext_entryS
) * n
;
6484 /* Switch to the symbol extension section. */
6485 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6487 frag_wane (frag_now
);
6490 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6493 int *symtab_map
= elf_sym_extra (abfd
);
6496 /* First, patch the symbol extension record to reflect the true
6497 symbol table index. */
6499 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6501 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6502 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6506 ptr
= frag_more (sizeof (symextP
->entry
));
6507 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6510 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6511 frag_wane (frag_now
);
6513 /* Switch back to the original segment. */
6514 subseg_set (save_seg
, save_subseg
);
6519 /* Make the symbol extension section. */
6522 hppa_tc_make_symextn_section ()
6526 symext_chainS
*symextP
;
6530 segT save_seg
= now_seg
;
6531 subsegT save_subseg
= now_subseg
;
6533 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6536 size
= sizeof (symext_entryS
) * n
;
6538 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6540 bfd_set_section_flags (stdoutput
, symextn_sec
,
6541 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6542 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6544 /* Now, switch back to the original segment. */
6545 subseg_set (save_seg
, save_subseg
);
6549 /* Build the symbol extension section. */
6552 pa_build_symextn_section ()
6555 asection
*save_seg
= now_seg
;
6556 subsegT subseg
= (subsegT
) 0;
6557 subsegT save_subseg
= now_subseg
;
6559 seg
= subseg_new (".hppa_symextn", subseg
);
6560 bfd_set_section_flags (stdoutput
,
6562 SEC_HAS_CONTENTS
| SEC_READONLY
6563 | SEC_ALLOC
| SEC_LOAD
);
6565 subseg_set (save_seg
, save_subseg
);
6569 /* For ELF, this function serves one purpose: to setup the st_size
6570 field of STT_FUNC symbols. To do this, we need to scan the
6571 call_info structure list, determining st_size in one of two possible
6574 1. call_info->start_frag->fr_fix has the size of the fragment.
6575 This approach assumes that the function was built into a
6576 single fragment. This works for most cases, but might fail.
6577 For example, if there was a segment change in the middle of
6580 2. The st_size field is the difference in the addresses of the
6581 call_info->start_frag->fr_address field and the fr_address
6582 field of the next fragment with fr_type == rs_fill and
6586 elf_hppa_final_processing ()
6588 struct call_info
*call_info_pointer
;
6590 for (call_info_pointer
= call_info_root
;
6592 call_info_pointer
= call_info_pointer
->ci_next
)
6594 elf_symbol_type
*esym
6595 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6596 esym
->internal_elf_sym
.st_size
=
6597 S_GET_VALUE (call_info_pointer
->end_symbol
)
6598 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;