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
)
2616 number_to_chars_bigendian (buf
, val
, n
);
2619 /* Translate internal representation of relocation info to BFD target
2623 tc_gen_reloc (section
, fixp
)
2628 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2629 bfd_reloc_code_real_type code
;
2630 static int unwind_reloc_fixp_cnt
= 0;
2631 static arelent
*unwind_reloc_entryP
= NULL
;
2632 static arelent
*no_relocs
= NULL
;
2634 bfd_reloc_code_real_type
**codes
;
2638 if (fixp
->fx_addsy
== 0)
2640 assert (hppa_fixp
!= 0);
2641 assert (section
!= 0);
2644 /* Yuk. I would really like to push all this ELF specific unwind
2645 crud into BFD and the linker. That's how SOM does it -- and
2646 if we could make ELF emulate that then we could share more code
2647 in GAS (and potentially a gnu-linker later).
2649 Unwind section relocations are handled in a special way.
2650 The relocations for the .unwind section are originally
2651 built in the usual way. That is, for each unwind table
2652 entry there are two relocations: one for the beginning of
2653 the function and one for the end.
2655 The first time we enter this function we create a
2656 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2657 of the relocation is initialized to 0. Each additional
2658 pair of times this function is called for the unwind
2659 section represents an additional unwind table entry. Thus,
2660 the addend of the relocation should end up to be the number
2661 of unwind table entries. */
2662 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2664 if (unwind_reloc_entryP
== NULL
)
2666 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2668 assert (reloc
!= 0);
2669 unwind_reloc_entryP
= reloc
;
2670 unwind_reloc_fixp_cnt
++;
2671 unwind_reloc_entryP
->address
2672 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2673 /* A pointer to any function will do. We only
2674 need one to tell us what section the unwind
2675 relocations are for. */
2676 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2677 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2678 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2679 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2680 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2681 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2682 sizeof (arelent
*) * 2);
2683 assert (relocs
!= 0);
2684 relocs
[0] = unwind_reloc_entryP
;
2688 unwind_reloc_fixp_cnt
++;
2689 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2695 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2696 assert (reloc
!= 0);
2698 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2699 codes
= hppa_gen_reloc_type (stdoutput
,
2701 hppa_fixp
->fx_r_format
,
2702 hppa_fixp
->fx_r_field
);
2704 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2707 relocs
= (arelent
**)
2708 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2709 assert (relocs
!= 0);
2711 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2712 sizeof (arelent
) * n_relocs
);
2714 assert (reloc
!= 0);
2716 for (i
= 0; i
< n_relocs
; i
++)
2717 relocs
[i
] = &reloc
[i
];
2719 relocs
[n_relocs
] = NULL
;
2722 switch (fixp
->fx_r_type
)
2724 case R_HPPA_COMPLEX
:
2725 case R_HPPA_COMPLEX_PCREL_CALL
:
2726 case R_HPPA_COMPLEX_ABS_CALL
:
2727 assert (n_relocs
== 5);
2729 for (i
= 0; i
< n_relocs
; i
++)
2731 reloc
[i
].sym_ptr_ptr
= NULL
;
2732 reloc
[i
].address
= 0;
2733 reloc
[i
].addend
= 0;
2734 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2735 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2738 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2739 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2740 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2742 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2743 reloc
[3].addend
= fixp
->fx_addnumber
;
2744 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2745 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2746 reloc
[1].addend
= fixp
->fx_addnumber
;
2751 assert (n_relocs
== 1);
2755 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2756 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2757 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2758 reloc
->addend
= 0; /* default */
2760 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2762 /* Now, do any processing that is dependent on the relocation type. */
2765 case R_HPPA_PLABEL_32
:
2766 case R_HPPA_PLABEL_11
:
2767 case R_HPPA_PLABEL_14
:
2768 case R_HPPA_PLABEL_L21
:
2769 case R_HPPA_PLABEL_R11
:
2770 case R_HPPA_PLABEL_R14
:
2771 /* For plabel relocations, the addend of the
2772 relocation should be either 0 (no static link) or 2
2773 (static link required).
2775 FIXME: assume that fx_addnumber contains this
2777 reloc
->addend
= fixp
->fx_addnumber
;
2780 case R_HPPA_ABS_CALL_11
:
2781 case R_HPPA_ABS_CALL_14
:
2782 case R_HPPA_ABS_CALL_17
:
2783 case R_HPPA_ABS_CALL_L21
:
2784 case R_HPPA_ABS_CALL_R11
:
2785 case R_HPPA_ABS_CALL_R14
:
2786 case R_HPPA_ABS_CALL_R17
:
2787 case R_HPPA_ABS_CALL_LS21
:
2788 case R_HPPA_ABS_CALL_RS11
:
2789 case R_HPPA_ABS_CALL_RS14
:
2790 case R_HPPA_ABS_CALL_RS17
:
2791 case R_HPPA_ABS_CALL_LD21
:
2792 case R_HPPA_ABS_CALL_RD11
:
2793 case R_HPPA_ABS_CALL_RD14
:
2794 case R_HPPA_ABS_CALL_RD17
:
2795 case R_HPPA_ABS_CALL_LR21
:
2796 case R_HPPA_ABS_CALL_RR14
:
2797 case R_HPPA_ABS_CALL_RR17
:
2799 case R_HPPA_PCREL_CALL_11
:
2800 case R_HPPA_PCREL_CALL_14
:
2801 case R_HPPA_PCREL_CALL_17
:
2802 case R_HPPA_PCREL_CALL_L21
:
2803 case R_HPPA_PCREL_CALL_R11
:
2804 case R_HPPA_PCREL_CALL_R14
:
2805 case R_HPPA_PCREL_CALL_R17
:
2806 case R_HPPA_PCREL_CALL_LS21
:
2807 case R_HPPA_PCREL_CALL_RS11
:
2808 case R_HPPA_PCREL_CALL_RS14
:
2809 case R_HPPA_PCREL_CALL_RS17
:
2810 case R_HPPA_PCREL_CALL_LD21
:
2811 case R_HPPA_PCREL_CALL_RD11
:
2812 case R_HPPA_PCREL_CALL_RD14
:
2813 case R_HPPA_PCREL_CALL_RD17
:
2814 case R_HPPA_PCREL_CALL_LR21
:
2815 case R_HPPA_PCREL_CALL_RR14
:
2816 case R_HPPA_PCREL_CALL_RR17
:
2817 /* The constant is stored in the instruction. */
2818 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2821 reloc
->addend
= fixp
->fx_addnumber
;
2828 /* Preliminary relocation handling for SOM. Needs to handle
2829 COMPLEX relocations (yes, I've seen them occur) and it will
2830 need to handle R_ENTRY/R_EXIT relocations in the very near future
2831 (for generating unwinds). */
2832 switch (fixp
->fx_r_type
)
2834 case R_HPPA_COMPLEX
:
2835 case R_HPPA_COMPLEX_PCREL_CALL
:
2836 case R_HPPA_COMPLEX_ABS_CALL
:
2840 assert (n_relocs
== 1);
2844 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2845 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2846 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2852 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2857 /* For plabel relocations, the addend of the
2858 relocation should be either 0 (no static link) or 2
2859 (static link required).
2861 FIXME: We always assume no static link! */
2866 reloc
->addend
= fixp
->fx_addnumber
;
2876 /* Process any machine dependent frag types. */
2879 md_convert_frag (abfd
, sec
, fragP
)
2881 register asection
*sec
;
2882 register fragS
*fragP
;
2884 unsigned int address
;
2886 if (fragP
->fr_type
== rs_machine_dependent
)
2888 switch ((int) fragP
->fr_subtype
)
2891 fragP
->fr_type
= rs_fill
;
2892 know (fragP
->fr_var
== 1);
2893 know (fragP
->fr_next
);
2894 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2895 if (address
% fragP
->fr_offset
)
2898 fragP
->fr_next
->fr_address
2903 fragP
->fr_offset
= 0;
2909 /* Round up a section size to the appropriate boundary. */
2912 md_section_align (segment
, size
)
2916 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2917 int align2
= (1 << align
) - 1;
2919 return (size
+ align2
) & ~align2
;
2923 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2925 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2927 addressT from_addr
, to_addr
;
2931 fprintf (stderr
, "pa_create_short_jmp\n");
2935 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2937 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2939 addressT from_addr
, to_addr
;
2943 fprintf (stderr
, "pa_create_long_jump\n");
2947 /* Return the approximate size of a frag before relaxation has occurred. */
2949 md_estimate_size_before_relax (fragP
, segment
)
2950 register fragS
*fragP
;
2957 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2963 /* Parse machine dependent options. There are none on the PA. */
2965 md_parse_option (argP
, cntP
, vecP
)
2973 /* We have no need to default values of symbols. */
2976 md_undefined_symbol (name
)
2982 /* Parse an operand that is machine-specific.
2983 We just return without modifying the expression as we have nothing
2987 md_operand (expressionP
)
2988 expressionS
*expressionP
;
2992 /* Helper function for md_apply_fix. Actually determine if the fix
2993 can be applied, and if so, apply it.
2995 If a fix is applied, then set fx_addsy to NULL which indicates
2996 the fix was applied and need not be emitted into the object file. */
2999 md_apply_fix_1 (fixP
, val
)
3003 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
3004 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
3005 long new_val
, result
;
3006 unsigned int w1
, w2
, w
;
3008 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3009 never be "applied". They must always be emitted. */
3011 if (fixP
->fx_r_type
== R_HPPA_ENTRY
3012 || fixP
->fx_r_type
== R_HPPA_EXIT
)
3016 /* There should have been an HPPA specific fixup associated
3017 with the GAS fixup. */
3020 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
3021 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
3023 if (fixP
->fx_r_type
== R_HPPA_NONE
)
3026 /* Remember this value for emit_reloc. FIXME, is this braindamage
3027 documented anywhere!?! */
3028 fixP
->fx_addnumber
= val
;
3030 /* Check if this is an undefined symbol. No relocation can
3031 possibly be performed in this case. */
3032 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
3034 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
3037 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
3038 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
3039 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
)
3040 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3046 /* Handle all opcodes with the 'j' operand type. */
3048 CHECK_FIELD (new_val
, 8191, -8192, 0);
3050 /* Mask off 14 bits to be changed. */
3051 bfd_put_32 (stdoutput
,
3052 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3054 low_sign_unext (new_val
, 14, &result
);
3057 /* Handle all opcodes with the 'k' operand type. */
3059 CHECK_FIELD (new_val
, 2097152, 0, 0);
3061 /* Mask off 21 bits to be changed. */
3062 bfd_put_32 (stdoutput
,
3063 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3065 dis_assemble_21 (new_val
, &result
);
3068 /* Handle all the opcodes with the 'i' operand type. */
3070 CHECK_FIELD (new_val
, 1023, -1023, 0);
3072 /* Mask off 11 bits to be changed. */
3073 bfd_put_32 (stdoutput
,
3074 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3076 low_sign_unext (new_val
, 11, &result
);
3079 /* Handle all the opcodes with the 'w' operand type. */
3081 CHECK_FIELD (new_val
, 8191, -8192, 0)
3083 /* Mask off 11 bits to be changed. */
3084 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3085 bfd_put_32 (stdoutput
,
3086 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3089 dis_assemble_12 (result
, &w1
, &w
);
3090 result
= ((w1
<< 2) | w
);
3093 #define stub_needed(CALLER, CALLEE) \
3094 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3096 /* Handle some of the opcodes with the 'W' operand type. */
3098 /* If a long-call stub or argument relocation stub is
3099 needed, then we can not apply this relocation, instead
3100 the linker must handle it. */
3101 if (new_val
> 262143 || new_val
< -262144
3102 || stub_needed (((obj_symbol_type
*)
3103 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3104 hppa_fixP
->fx_arg_reloc
))
3107 /* No stubs were needed, we can perform this relocation. */
3108 CHECK_FIELD (new_val
, 262143, -262144, 0);
3110 /* Mask off 17 bits to be changed. */
3111 bfd_put_32 (stdoutput
,
3112 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3114 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3115 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3116 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3124 /* These are ELF specific relocations. ELF unfortunately
3125 handles unwinds in a completely different manner. */
3126 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3127 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3128 result
= fixP
->fx_addnumber
;
3133 fixP
->fx_addnumber
= fixP
->fx_offset
;
3134 bfd_put_32 (stdoutput
, 0, buf
);
3143 as_bad ("Unknown relocation encountered in md_apply_fix.");
3147 /* Insert the relocation. */
3148 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3151 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3152 (unsigned int) fixP
, fixP
->fx_r_type
);
3155 /* Apply a fix into a frag's data (if possible). */
3158 md_apply_fix (fixP
, valp
)
3162 md_apply_fix_1 (fixP
, (long) *valp
);
3166 /* Exactly what point is a PC-relative offset relative TO?
3167 On the PA, they're relative to the address of the offset. */
3170 md_pcrel_from (fixP
)
3173 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3176 /* Return nonzero if the input line pointer is at the end of
3180 is_end_of_statement ()
3182 return ((*input_line_pointer
== '\n')
3183 || (*input_line_pointer
== ';')
3184 || (*input_line_pointer
== '!'));
3187 /* Read a number from S. The number might come in one of many forms,
3188 the most common will be a hex or decimal constant, but it could be
3189 a pre-defined register (Yuk!), or an absolute symbol.
3191 Return a number or -1 for failure.
3193 When parsing PA-89 FP register numbers RESULT will be
3194 the address of a structure to return information about
3195 L/R half of FP registers, store results there as appropriate.
3197 pa_parse_number can not handle negative constants and will fail
3198 horribly if it is passed such a constant. */
3201 pa_parse_number (s
, result
)
3203 struct pa_89_fp_reg_struct
*result
;
3212 /* Skip whitespace before the number. */
3213 while (*p
== ' ' || *p
== '\t')
3216 /* Store info in RESULT if requested by caller. */
3219 result
->number_part
= -1;
3220 result
->l_r_select
= -1;
3226 /* Looks like a number. */
3229 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3231 /* The number is specified in hex. */
3233 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3234 || ((*p
>= 'A') && (*p
<= 'F')))
3237 num
= num
* 16 + *p
- '0';
3238 else if (*p
>= 'a' && *p
<= 'f')
3239 num
= num
* 16 + *p
- 'a' + 10;
3241 num
= num
* 16 + *p
- 'A' + 10;
3247 /* The number is specified in decimal. */
3248 while (isdigit (*p
))
3250 num
= num
* 10 + *p
- '0';
3255 /* Store info in RESULT if requested by the caller. */
3258 result
->number_part
= num
;
3260 if (IS_R_SELECT (p
))
3262 result
->l_r_select
= 1;
3265 else if (IS_L_SELECT (p
))
3267 result
->l_r_select
= 0;
3271 result
->l_r_select
= 0;
3276 /* The number might be a predefined register. */
3281 /* Tege hack: Special case for general registers as the general
3282 code makes a binary search with case translation, and is VERY
3287 if (*p
== 'e' && *(p
+ 1) == 't'
3288 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3291 num
= *p
- '0' + 28;
3299 else if (!isdigit (*p
))
3302 as_bad ("Undefined register: '%s'.", name
);
3308 num
= num
* 10 + *p
++ - '0';
3309 while (isdigit (*p
));
3314 /* Do a normal register search. */
3315 while (is_part_of_name (c
))
3321 status
= reg_name_search (name
);
3327 as_bad ("Undefined register: '%s'.", name
);
3333 /* Store info in RESULT if requested by caller. */
3336 result
->number_part
= num
;
3337 if (IS_R_SELECT (p
- 1))
3338 result
->l_r_select
= 1;
3339 else if (IS_L_SELECT (p
- 1))
3340 result
->l_r_select
= 0;
3342 result
->l_r_select
= 0;
3347 /* And finally, it could be a symbol in the absolute section which
3348 is effectively a constant. */
3352 while (is_part_of_name (c
))
3358 if ((sym
= symbol_find (name
)) != NULL
)
3360 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3361 num
= S_GET_VALUE (sym
);
3365 as_bad ("Non-absolute symbol: '%s'.", name
);
3371 /* There is where we'd come for an undefined symbol
3372 or for an empty string. For an empty string we
3373 will return zero. That's a concession made for
3374 compatability with the braindamaged HP assemblers. */
3380 as_bad ("Undefined absolute constant: '%s'.", name
);
3386 /* Store info in RESULT if requested by caller. */
3389 result
->number_part
= num
;
3390 if (IS_R_SELECT (p
- 1))
3391 result
->l_r_select
= 1;
3392 else if (IS_L_SELECT (p
- 1))
3393 result
->l_r_select
= 0;
3395 result
->l_r_select
= 0;
3403 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3405 /* Given NAME, find the register number associated with that name, return
3406 the integer value associated with the given name or -1 on failure. */
3409 reg_name_search (name
)
3412 int middle
, low
, high
;
3415 high
= REG_NAME_CNT
- 1;
3419 middle
= (low
+ high
) / 2;
3420 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) < 0)
3425 while (!((strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0) ||
3428 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0)
3429 return (pre_defined_registers
[middle
].value
);
3435 /* Return nonzero if the given INSN and L/R information will require
3436 a new PA-89 opcode. */
3439 need_89_opcode (insn
, result
)
3441 struct pa_89_fp_reg_struct
*result
;
3443 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3449 /* Parse a condition for a fcmp instruction. Return the numerical
3450 code associated with the condition. */
3453 pa_parse_fp_cmp_cond (s
)
3460 for (i
= 0; i
< 32; i
++)
3462 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3463 strlen (fp_cond_map
[i
].string
)) == 0)
3465 cond
= fp_cond_map
[i
].cond
;
3466 *s
+= strlen (fp_cond_map
[i
].string
);
3467 while (**s
== ' ' || **s
== '\t')
3473 as_bad ("Invalid FP Compare Condition: %c", **s
);
3477 /* Parse an FP operand format completer returning the completer
3480 static fp_operand_format
3481 pa_parse_fp_format (s
)
3490 if (strncasecmp (*s
, "sgl", 3) == 0)
3495 else if (strncasecmp (*s
, "dbl", 3) == 0)
3500 else if (strncasecmp (*s
, "quad", 4) == 0)
3507 format
= ILLEGAL_FMT
;
3508 as_bad ("Invalid FP Operand Format: %3s", *s
);
3515 /* Convert from a selector string into a selector type. */
3518 pa_chk_field_selector (str
)
3522 const struct selector_entry
*tablep
;
3526 /* Read past any whitespace. */
3527 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3530 /* Yuk. Looks like a linear search through the table. With the
3531 frequence of some selectors it might make sense to sort the
3533 for (tablep
= selector_table
; tablep
->prefix
; tablep
++)
3535 if (strncasecmp (tablep
->prefix
, *str
, strlen (tablep
->prefix
)) == 0)
3537 *str
+= strlen (tablep
->prefix
);
3538 selector
= tablep
->field_selector
;
3545 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3548 get_expression (str
)
3554 save_in
= input_line_pointer
;
3555 input_line_pointer
= str
;
3556 seg
= expression (&the_insn
.exp
);
3557 if (!(seg
== absolute_section
3558 || seg
== undefined_section
3559 || SEG_NORMAL (seg
)))
3561 as_warn ("Bad segment in expression.");
3562 expr_end
= input_line_pointer
;
3563 input_line_pointer
= save_in
;
3566 expr_end
= input_line_pointer
;
3567 input_line_pointer
= save_in
;
3571 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3573 pa_get_absolute_expression (insn
, strp
)
3579 insn
->field_selector
= pa_chk_field_selector (strp
);
3580 save_in
= input_line_pointer
;
3581 input_line_pointer
= *strp
;
3582 expression (&insn
->exp
);
3583 if (insn
->exp
.X_op
!= O_constant
)
3585 as_bad ("Bad segment (should be absolute).");
3586 expr_end
= input_line_pointer
;
3587 input_line_pointer
= save_in
;
3590 expr_end
= input_line_pointer
;
3591 input_line_pointer
= save_in
;
3592 return evaluate_absolute (insn
);
3595 /* Evaluate an absolute expression EXP which may be modified by
3596 the selector FIELD_SELECTOR. Return the value of the expression. */
3598 evaluate_absolute (insn
)
3603 int field_selector
= insn
->field_selector
;
3606 value
= exp
.X_add_number
;
3608 switch (field_selector
)
3614 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3616 if (value
& 0x00000400)
3618 value
= (value
& 0xfffff800) >> 11;
3621 /* Sign extend from bit 21. */
3623 if (value
& 0x00000400)
3624 value
|= 0xfffff800;
3629 /* Arithmetic shift right 11 bits. */
3631 value
= (value
& 0xfffff800) >> 11;
3634 /* Set bits 0-20 to zero. */
3636 value
= value
& 0x7ff;
3639 /* Add 0x800 and arithmetic shift right 11 bits. */
3644 value
= (value
& 0xfffff800) >> 11;
3647 /* Set bitgs 0-21 to one. */
3649 value
|= 0xfffff800;
3652 /* This had better get fixed. It looks like we're quickly moving
3659 BAD_CASE (field_selector
);
3665 /* Given an argument location specification return the associated
3666 argument location number. */
3669 pa_build_arg_reloc (type_name
)
3673 if (strncasecmp (type_name
, "no", 2) == 0)
3675 if (strncasecmp (type_name
, "gr", 2) == 0)
3677 else if (strncasecmp (type_name
, "fr", 2) == 0)
3679 else if (strncasecmp (type_name
, "fu", 2) == 0)
3682 as_bad ("Invalid argument location: %s\n", type_name
);
3687 /* Encode and return an argument relocation specification for
3688 the given register in the location specified by arg_reloc. */
3691 pa_align_arg_reloc (reg
, arg_reloc
)
3693 unsigned int arg_reloc
;
3695 unsigned int new_reloc
;
3697 new_reloc
= arg_reloc
;
3713 as_bad ("Invalid argument description: %d", reg
);
3719 /* Parse a PA nullification completer (,n). Return nonzero if the
3720 completer was found; return zero if no completer was found. */
3732 if (strncasecmp (*s
, "n", 1) == 0)
3736 as_bad ("Invalid Nullification: (%c)", **s
);
3745 /* Parse a non-negated compare/subtract completer returning the
3746 number (for encoding in instrutions) of the given completer.
3748 ISBRANCH specifies whether or not this is parsing a condition
3749 completer for a branch (vs a nullification completer for a
3750 computational instruction. */
3753 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3758 char *name
= *s
+ 1;
3766 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3770 if (strcmp (name
, "=") == 0)
3774 else if (strcmp (name
, "<") == 0)
3778 else if (strcmp (name
, "<=") == 0)
3782 else if (strcmp (name
, "<<") == 0)
3786 else if (strcmp (name
, "<<=") == 0)
3790 else if (strcasecmp (name
, "sv") == 0)
3794 else if (strcasecmp (name
, "od") == 0)
3798 /* If we have something like addb,n then there is no condition
3800 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3811 /* Reset pointers if this was really a ,n for a branch instruction. */
3812 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3818 /* Parse a negated compare/subtract completer returning the
3819 number (for encoding in instrutions) of the given completer.
3821 ISBRANCH specifies whether or not this is parsing a condition
3822 completer for a branch (vs a nullification completer for a
3823 computational instruction. */
3826 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3831 char *name
= *s
+ 1;
3839 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3843 if (strcasecmp (name
, "tr") == 0)
3847 else if (strcmp (name
, "<>") == 0)
3851 else if (strcmp (name
, ">=") == 0)
3855 else if (strcmp (name
, ">") == 0)
3859 else if (strcmp (name
, ">>=") == 0)
3863 else if (strcmp (name
, ">>") == 0)
3867 else if (strcasecmp (name
, "nsv") == 0)
3871 else if (strcasecmp (name
, "ev") == 0)
3875 /* If we have something like addb,n then there is no condition
3877 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3888 /* Reset pointers if this was really a ,n for a branch instruction. */
3889 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3895 /* Parse a non-negated addition completer returning the number
3896 (for encoding in instrutions) of the given completer.
3898 ISBRANCH specifies whether or not this is parsing a condition
3899 completer for a branch (vs a nullification completer for a
3900 computational instruction. */
3903 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3908 char *name
= *s
+ 1;
3916 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3920 if (strcmp (name
, "=") == 0)
3924 else if (strcmp (name
, "<") == 0)
3928 else if (strcmp (name
, "<=") == 0)
3932 else if (strcasecmp (name
, "nuv") == 0)
3936 else if (strcasecmp (name
, "znv") == 0)
3940 else if (strcasecmp (name
, "sv") == 0)
3944 else if (strcasecmp (name
, "od") == 0)
3948 /* If we have something like addb,n then there is no condition
3950 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3961 /* Reset pointers if this was really a ,n for a branch instruction. */
3962 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3968 /* Parse a negated addition completer returning the number
3969 (for encoding in instrutions) of the given completer.
3971 ISBRANCH specifies whether or not this is parsing a condition
3972 completer for a branch (vs a nullification completer for a
3973 computational instruction. */
3976 pa_parse_neg_add_cmpltr (s
, isbranch
)
3981 char *name
= *s
+ 1;
3989 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3993 if (strcasecmp (name
, "tr") == 0)
3997 else if (strcmp (name
, "<>") == 0)
4001 else if (strcmp (name
, ">=") == 0)
4005 else if (strcmp (name
, ">") == 0)
4009 else if (strcmp (name
, "uv") == 0)
4013 else if (strcmp (name
, "vnz") == 0)
4017 else if (strcasecmp (name
, "nsv") == 0)
4021 else if (strcasecmp (name
, "ev") == 0)
4025 /* If we have something like addb,n then there is no condition
4027 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4038 /* Reset pointers if this was really a ,n for a branch instruction. */
4039 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4045 /* Handle a .BLOCK type pseudo-op. */
4053 unsigned int temp_size
;
4056 temp_size
= get_absolute_expression ();
4058 /* Always fill with zeros, that's what the HP assembler does. */
4061 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4062 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4063 bzero (p
, temp_size
);
4065 /* Convert 2 bytes at a time. */
4067 for (i
= 0; i
< temp_size
; i
+= 2)
4069 md_number_to_chars (p
+ i
,
4071 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4074 pa_undefine_label ();
4075 demand_empty_rest_of_line ();
4079 /* Handle a .CALL pseudo-op. This involves storing away information
4080 about where arguments are to be found so the linker can detect
4081 (and correct) argument location mismatches between caller and callee. */
4087 pa_call_args (&last_call_desc
);
4088 demand_empty_rest_of_line ();
4092 /* Do the dirty work of building a call descriptor which describes
4093 where the caller placed arguments to a function call. */
4096 pa_call_args (call_desc
)
4097 struct call_desc
*call_desc
;
4100 unsigned int temp
, arg_reloc
;
4102 while (!is_end_of_statement ())
4104 name
= input_line_pointer
;
4105 c
= get_symbol_end ();
4106 /* Process a source argument. */
4107 if ((strncasecmp (name
, "argw", 4) == 0))
4109 temp
= atoi (name
+ 4);
4110 p
= input_line_pointer
;
4112 input_line_pointer
++;
4113 name
= input_line_pointer
;
4114 c
= get_symbol_end ();
4115 arg_reloc
= pa_build_arg_reloc (name
);
4116 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4118 /* Process a return value. */
4119 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4121 p
= input_line_pointer
;
4123 input_line_pointer
++;
4124 name
= input_line_pointer
;
4125 c
= get_symbol_end ();
4126 arg_reloc
= pa_build_arg_reloc (name
);
4127 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4131 as_bad ("Invalid .CALL argument: %s", name
);
4133 p
= input_line_pointer
;
4135 if (!is_end_of_statement ())
4136 input_line_pointer
++;
4140 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4143 is_same_frag (frag1
, frag2
)
4150 else if (frag2
== NULL
)
4152 else if (frag1
== frag2
)
4154 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4155 return (is_same_frag (frag1
, frag2
->fr_next
));
4161 /* Build an entry in the UNWIND subspace from the given function
4162 attributes in CALL_INFO. This is not needed for SOM as using
4163 R_ENTRY and R_EXIT relocations allow the linker to handle building
4164 of the unwind spaces. */
4167 pa_build_unwind_subspace (call_info
)
4168 struct call_info
*call_info
;
4171 asection
*seg
, *save_seg
;
4172 subsegT subseg
, save_subseg
;
4176 /* Get into the right seg/subseg. This may involve creating
4177 the seg the first time through. Make sure to have the
4178 old seg/subseg so that we can reset things when we are done. */
4179 subseg
= SUBSEG_UNWIND
;
4180 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4181 if (seg
== ASEC_NULL
)
4183 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4184 bfd_set_section_flags (stdoutput
, seg
,
4185 SEC_READONLY
| SEC_HAS_CONTENTS
4186 | SEC_LOAD
| SEC_RELOC
);
4190 save_subseg
= now_subseg
;
4191 subseg_set (seg
, subseg
);
4194 /* Get some space to hold relocation information for the unwind
4197 call_info
->start_offset_frag
= frag_now
;
4198 call_info
->start_frag_where
= p
- frag_now
->fr_literal
;
4200 /* Relocation info. for start offset of the function. */
4201 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4202 call_info
->start_symbol
, (offsetT
) 0,
4203 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4206 /* We need to search for the first relocation involving the start_symbol of
4207 this call_info descriptor. */
4211 call_info
->start_fix
= seg_info (now_seg
)->fix_root
;
4212 for (fixP
= call_info
->start_fix
; fixP
; fixP
= fixP
->fx_next
)
4214 if (fixP
->fx_addsy
== call_info
->start_symbol
4215 || fixP
->fx_subsy
== call_info
->start_symbol
)
4217 call_info
->start_fix
= fixP
;
4224 call_info
->end_offset_frag
= frag_now
;
4225 call_info
->end_frag_where
= p
- frag_now
->fr_literal
;
4227 /* Relocation info. for end offset of the function. */
4228 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4229 call_info
->end_symbol
, (offsetT
) 0,
4230 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4233 /* We need to search for the first relocation involving the end_symbol of
4234 this call_info descriptor. */
4238 call_info
->end_fix
= seg_info (now_seg
)->fix_root
; /* the default */
4239 for (fixP
= call_info
->end_fix
; fixP
; fixP
= fixP
->fx_next
)
4241 if (fixP
->fx_addsy
== call_info
->end_symbol
4242 || fixP
->fx_subsy
== call_info
->end_symbol
)
4244 call_info
->end_fix
= fixP
;
4251 unwind
= (char *) &call_info
->ci_unwind
;
4252 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4256 FRAG_APPEND_1_CHAR (c
);
4260 /* Return back to the original segment/subsegment. */
4261 subseg_set (save_seg
, save_subseg
);
4265 /* Process a .CALLINFO pseudo-op. This information is used later
4266 to build unwind descriptors and maybe one day to support
4267 .ENTER and .LEAVE. */
4270 pa_callinfo (unused
)
4276 /* .CALLINFO must appear within a procedure definition. */
4277 if (!within_procedure
)
4278 as_bad (".callinfo is not within a procedure definition");
4280 /* Mark the fact that we found the .CALLINFO for the
4281 current procedure. */
4282 callinfo_found
= TRUE
;
4284 /* Iterate over the .CALLINFO arguments. */
4285 while (!is_end_of_statement ())
4287 name
= input_line_pointer
;
4288 c
= get_symbol_end ();
4289 /* Frame size specification. */
4290 if ((strncasecmp (name
, "frame", 5) == 0))
4292 p
= input_line_pointer
;
4294 input_line_pointer
++;
4295 temp
= get_absolute_expression ();
4296 if ((temp
& 0x3) != 0)
4298 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4302 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4303 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4306 /* Entry register (GR, GR and SR) specifications. */
4307 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4309 p
= input_line_pointer
;
4311 input_line_pointer
++;
4312 temp
= get_absolute_expression ();
4313 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4314 even though %r19 is caller saved. I think this is a bug in
4315 the HP assembler, and we are not going to emulate it. */
4316 if (temp
< 3 || temp
> 18)
4317 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4318 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4320 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4322 p
= input_line_pointer
;
4324 input_line_pointer
++;
4325 temp
= get_absolute_expression ();
4326 /* Similarly the HP assembler takes 31 as the high bound even
4327 though %fr21 is the last callee saved floating point register. */
4328 if (temp
< 12 || temp
> 21)
4329 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4330 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4332 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4334 p
= input_line_pointer
;
4336 input_line_pointer
++;
4337 temp
= get_absolute_expression ();
4339 as_bad ("Value for ENTRY_SR must be 3\n");
4340 last_call_info
->entry_sr
= temp
- 2;
4342 /* Note whether or not this function performs any calls. */
4343 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4344 (strncasecmp (name
, "caller", 6) == 0))
4346 p
= input_line_pointer
;
4348 last_call_info
->makes_calls
= 1;
4350 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4352 p
= input_line_pointer
;
4354 last_call_info
->makes_calls
= 0;
4356 /* Should RP be saved into the stack. */
4357 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4359 p
= input_line_pointer
;
4361 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4363 /* Likewise for SP. */
4364 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4366 p
= input_line_pointer
;
4368 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4370 /* Is this an unwindable procedure. If so mark it so
4371 in the unwind descriptor. */
4372 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4374 p
= input_line_pointer
;
4376 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4378 /* Is this an interrupt routine. If so mark it in the
4379 unwind descriptor. */
4380 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4382 p
= input_line_pointer
;
4384 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4388 as_bad ("Invalid .CALLINFO argument: %s", name
);
4390 if (!is_end_of_statement ())
4391 input_line_pointer
++;
4394 demand_empty_rest_of_line ();
4398 /* Switch into the code subspace. */
4404 sd_chain_struct
*sdchain
;
4406 /* First time through it might be necessary to create the
4408 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4410 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4411 pa_def_spaces
[0].spnum
,
4412 pa_def_spaces
[0].loadable
,
4413 pa_def_spaces
[0].defined
,
4414 pa_def_spaces
[0].private,
4415 pa_def_spaces
[0].sort
,
4416 pa_def_spaces
[0].segment
, 0);
4419 SPACE_DEFINED (sdchain
) = 1;
4420 subseg_set (text_section
, SUBSEG_CODE
);
4421 demand_empty_rest_of_line ();
4425 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4426 the .comm pseudo-op has the following symtax:
4428 <label> .comm <length>
4430 where <label> is optional and is a symbol whose address will be the start of
4431 a block of memory <length> bytes long. <length> must be an absolute
4432 expression. <length> bytes will be allocated in the current space
4441 label_symbol_struct
*label_symbol
= pa_get_label ();
4444 symbol
= label_symbol
->lss_label
;
4449 size
= get_absolute_expression ();
4453 /* It is incorrect to check S_IS_DEFINED at this point as
4454 the symbol will *always* be defined. FIXME. How to
4455 correctly determine when this label really as been
4457 if (S_GET_VALUE (symbol
))
4459 if (S_GET_VALUE (symbol
) != size
)
4461 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4462 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4468 S_SET_VALUE (symbol
, size
);
4469 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4470 S_SET_EXTERNAL (symbol
);
4473 demand_empty_rest_of_line ();
4476 /* Process a .COPYRIGHT pseudo-op. */
4479 pa_copyright (unused
)
4486 if (*input_line_pointer
== '\"')
4488 ++input_line_pointer
;
4489 name
= input_line_pointer
;
4490 while ((c
= next_char_of_string ()) >= 0)
4492 c
= *input_line_pointer
;
4493 *input_line_pointer
= '\0';
4494 *(input_line_pointer
- 1) = '\0';
4496 /* FIXME. Not supported */
4499 *input_line_pointer
= c
;
4503 as_bad ("Expected \"-ed string");
4505 pa_undefine_label ();
4506 demand_empty_rest_of_line ();
4509 /* Process a .END pseudo-op. */
4515 demand_empty_rest_of_line ();
4519 /* Process a .ENTER pseudo-op. This is not supported. */
4528 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4534 if (!within_procedure
)
4535 as_bad ("Misplaced .entry. Ignored.");
4538 if (!callinfo_found
)
4539 as_bad ("Missing .callinfo.");
4541 last_call_info
->start_frag
= frag_now
;
4543 demand_empty_rest_of_line ();
4544 within_entry_exit
= TRUE
;
4546 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4547 It will not be on if no .EXPORT pseudo-op exists (static function). */
4548 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4551 /* SOM defers building of unwind descriptors until the link phase.
4552 The assembler is responsible for creating an R_ENTRY relocation
4553 to mark the beginning of a region and hold the unwind bits, and
4554 for creating an R_EXIT relocation to mark the end of the region.
4556 FIXME. ELF should be using the same conventions! The problem
4557 is an unwind requires too much relocation space. Hmmm. Maybe
4558 if we split the unwind bits up between the relocations which
4559 denote the entry and exit points. */
4561 char *where
= frag_more (0);
4563 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4564 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4565 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4566 (char *) &last_call_info
->ci_unwind
.descriptor
);
4573 /* Handle a .EQU pseudo-op. */
4579 label_symbol_struct
*label_symbol
= pa_get_label ();
4584 symbol
= label_symbol
->lss_label
;
4585 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4586 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4591 as_bad (".REG must use a label");
4593 as_bad (".EQU must use a label");
4596 pa_undefine_label ();
4597 demand_empty_rest_of_line ();
4601 /* Helper function. Does processing for the end of a function. This
4602 usually involves creating some relocations or building special
4603 symbols to mark the end of the function. */
4610 where
= frag_more (0);
4613 /* Mark the end of the function, stuff away the location of the frag
4614 for the end of the function, and finally call pa_build_unwind_subspace
4615 to add an entry in the unwind table. */
4616 hppa_elf_mark_end_of_function ();
4617 last_call_info
->end_frag
= frag_now
;
4618 pa_build_unwind_subspace (last_call_info
);
4620 /* SOM defers building of unwind descriptors until the link phase.
4621 The assembler is responsible for creating an R_ENTRY relocation
4622 to mark the beginning of a region and hold the unwind bits, and
4623 for creating an R_EXIT relocation to mark the end of the region.
4625 FIXME. ELF should be using the same conventions! The problem
4626 is an unwind requires too much relocation space. Hmmm. Maybe
4627 if we split the unwind bits up between the relocations which
4628 denote the entry and exit points. */
4629 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4630 last_call_info
->start_symbol
, (offsetT
) 0,
4631 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4636 /* Process a .EXIT pseudo-op. */
4642 if (!within_procedure
)
4643 as_bad (".EXIT must appear within a procedure");
4646 if (!callinfo_found
)
4647 as_bad ("Missing .callinfo");
4650 if (!within_entry_exit
)
4651 as_bad ("No .ENTRY for this .EXIT");
4654 within_entry_exit
= FALSE
;
4659 demand_empty_rest_of_line ();
4663 /* Process a .EXPORT directive. This makes functions external
4664 and provides information such as argument relocation entries
4674 name
= input_line_pointer
;
4675 c
= get_symbol_end ();
4676 /* Make sure the given symbol exists. */
4677 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4679 as_bad ("Cannot define export symbol: %s\n", name
);
4680 p
= input_line_pointer
;
4682 input_line_pointer
++;
4686 /* OK. Set the external bits and process argument relocations. */
4687 S_SET_EXTERNAL (symbol
);
4688 p
= input_line_pointer
;
4690 if (!is_end_of_statement ())
4692 input_line_pointer
++;
4693 pa_type_args (symbol
, 1);
4695 pa_build_symextn_section ();
4700 demand_empty_rest_of_line ();
4704 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4707 pa_type_args (symbolP
, is_export
)
4712 unsigned int temp
, arg_reloc
;
4713 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4714 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4716 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4719 input_line_pointer
+= 8;
4720 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4721 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4722 type
= SYMBOL_TYPE_ABSOLUTE
;
4724 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4726 input_line_pointer
+= 4;
4727 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4728 instead one should be IMPORTing/EXPORTing ENTRY types.
4730 Complain if one tries to EXPORT a CODE type since that's never
4731 done. Both GCC and HP C still try to IMPORT CODE types, so
4732 silently fix them to be ENTRY types. */
4733 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4736 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4738 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4739 type
= SYMBOL_TYPE_ENTRY
;
4743 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4744 type
= SYMBOL_TYPE_CODE
;
4747 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4749 input_line_pointer
+= 4;
4750 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4751 type
= SYMBOL_TYPE_DATA
;
4753 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4755 input_line_pointer
+= 5;
4756 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4757 type
= SYMBOL_TYPE_ENTRY
;
4759 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4761 input_line_pointer
+= 9;
4762 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4763 type
= SYMBOL_TYPE_MILLICODE
;
4765 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4767 input_line_pointer
+= 6;
4768 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4769 type
= SYMBOL_TYPE_PLABEL
;
4771 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4773 input_line_pointer
+= 8;
4774 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4775 type
= SYMBOL_TYPE_PRI_PROG
;
4777 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4779 input_line_pointer
+= 8;
4780 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4781 type
= SYMBOL_TYPE_SEC_PROG
;
4784 /* SOM requires much more information about symbol types
4785 than BFD understands. This is how we get this information
4786 to the SOM BFD backend. */
4787 #ifdef obj_set_symbol_type
4788 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4791 /* Now that the type of the exported symbol has been handled,
4792 handle any argument relocation information. */
4793 while (!is_end_of_statement ())
4795 if (*input_line_pointer
== ',')
4796 input_line_pointer
++;
4797 name
= input_line_pointer
;
4798 c
= get_symbol_end ();
4799 /* Argument sources. */
4800 if ((strncasecmp (name
, "argw", 4) == 0))
4802 p
= input_line_pointer
;
4804 input_line_pointer
++;
4805 temp
= atoi (name
+ 4);
4806 name
= input_line_pointer
;
4807 c
= get_symbol_end ();
4808 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4809 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4810 *input_line_pointer
= c
;
4812 /* The return value. */
4813 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4815 p
= input_line_pointer
;
4817 input_line_pointer
++;
4818 name
= input_line_pointer
;
4819 c
= get_symbol_end ();
4820 arg_reloc
= pa_build_arg_reloc (name
);
4821 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4822 *input_line_pointer
= c
;
4824 /* Privelege level. */
4825 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4827 p
= input_line_pointer
;
4829 input_line_pointer
++;
4830 temp
= atoi (input_line_pointer
);
4831 c
= get_symbol_end ();
4832 *input_line_pointer
= c
;
4836 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4837 p
= input_line_pointer
;
4840 if (!is_end_of_statement ())
4841 input_line_pointer
++;
4845 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4846 assembly file must either be defined in the assembly file, or
4847 explicitly IMPORTED from another. */
4856 name
= input_line_pointer
;
4857 c
= get_symbol_end ();
4859 symbol
= symbol_find_or_make (name
);
4860 p
= input_line_pointer
;
4863 if (!is_end_of_statement ())
4865 input_line_pointer
++;
4866 pa_type_args (symbol
, 0);
4870 /* Sigh. To be compatable with the HP assembler and to help
4871 poorly written assembly code, we assign a type based on
4872 the the current segment. Note only BSF_FUNCTION really
4873 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4874 if (now_seg
== text_section
)
4875 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4877 /* If the section is undefined, then the symbol is undefined
4878 Since this is an import, leave the section undefined. */
4879 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4882 demand_empty_rest_of_line ();
4886 /* Handle a .LABEL pseudo-op. */
4894 name
= input_line_pointer
;
4895 c
= get_symbol_end ();
4897 if (strlen (name
) > 0)
4900 p
= input_line_pointer
;
4905 as_warn ("Missing label name on .LABEL");
4908 if (!is_end_of_statement ())
4910 as_warn ("extra .LABEL arguments ignored.");
4911 ignore_rest_of_line ();
4913 demand_empty_rest_of_line ();
4917 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4926 /* Handle a .ORIGIN pseudo-op. */
4933 pa_undefine_label ();
4937 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4938 is for static functions. FIXME. Should share more code with .EXPORT. */
4947 name
= input_line_pointer
;
4948 c
= get_symbol_end ();
4950 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4952 as_bad ("Cannot define static symbol: %s\n", name
);
4953 p
= input_line_pointer
;
4955 input_line_pointer
++;
4959 S_CLEAR_EXTERNAL (symbol
);
4960 p
= input_line_pointer
;
4962 if (!is_end_of_statement ())
4964 input_line_pointer
++;
4965 pa_type_args (symbol
, 0);
4969 demand_empty_rest_of_line ();
4973 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4974 of a procedure from a syntatical point of view. */
4980 struct call_info
*call_info
;
4982 if (within_procedure
)
4983 as_fatal ("Nested procedures");
4985 /* Reset global variables for new procedure. */
4986 callinfo_found
= FALSE
;
4987 within_procedure
= TRUE
;
4989 /* Create another call_info structure. */
4990 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4993 as_fatal ("Cannot allocate unwind descriptor\n");
4995 bzero (call_info
, sizeof (struct call_info
));
4997 call_info
->ci_next
= NULL
;
4999 if (call_info_root
== NULL
)
5001 call_info_root
= call_info
;
5002 last_call_info
= call_info
;
5006 last_call_info
->ci_next
= call_info
;
5007 last_call_info
= call_info
;
5010 /* set up defaults on call_info structure */
5012 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5013 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5014 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5015 call_info
->entry_sr
= ~0;
5016 call_info
->makes_calls
= 1;
5018 /* If we got a .PROC pseudo-op, we know that the function is defined
5019 locally. Make sure it gets into the symbol table. */
5021 label_symbol_struct
*label_symbol
= pa_get_label ();
5025 if (label_symbol
->lss_label
)
5027 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5028 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5031 as_bad ("Missing function name for .PROC (corrupted label)");
5034 as_bad ("Missing function name for .PROC");
5037 demand_empty_rest_of_line ();
5041 /* Process the syntatical end of a procedure. Make sure all the
5042 appropriate pseudo-ops were found within the procedure. */
5049 if (!within_procedure
)
5050 as_bad ("misplaced .procend");
5052 if (!callinfo_found
)
5053 as_bad ("Missing .callinfo for this procedure");
5055 if (within_entry_exit
)
5056 as_bad ("Missing .EXIT for a .ENTRY");
5059 /* ELF needs to mark the end of each function so that it can compute
5060 the size of the function (apparently its needed in the symbol table. */
5061 hppa_elf_mark_end_of_function ();
5064 within_procedure
= FALSE
;
5065 demand_empty_rest_of_line ();
5069 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5070 then create a new space entry to hold the information specified
5071 by the parameters to the .SPACE directive. */
5073 static sd_chain_struct
*
5074 pa_parse_space_stmt (space_name
, create_flag
)
5078 char *name
, *ptemp
, c
;
5079 char loadable
, defined
, private, sort
;
5081 asection
*seg
= NULL
;
5082 sd_chain_struct
*space
;
5084 /* load default values */
5090 if (strcasecmp (space_name
, "$TEXT$") == 0)
5092 seg
= pa_def_spaces
[0].segment
;
5093 sort
= pa_def_spaces
[0].sort
;
5095 else if (strcasecmp (space_name
, "$PRIVATE$") == 0)
5097 seg
= pa_def_spaces
[1].segment
;
5098 sort
= pa_def_spaces
[1].sort
;
5101 if (!is_end_of_statement ())
5103 print_errors
= FALSE
;
5104 ptemp
= input_line_pointer
+ 1;
5105 /* First see if the space was specified as a number rather than
5106 as a name. According to the PA assembly manual the rest of
5107 the line should be ignored. */
5108 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5109 input_line_pointer
= ptemp
;
5112 while (!is_end_of_statement ())
5114 input_line_pointer
++;
5115 name
= input_line_pointer
;
5116 c
= get_symbol_end ();
5117 if ((strncasecmp (name
, "SPNUM", 5) == 0))
5119 *input_line_pointer
= c
;
5120 input_line_pointer
++;
5121 spnum
= get_absolute_expression ();
5123 else if ((strncasecmp (name
, "SORT", 4) == 0))
5125 *input_line_pointer
= c
;
5126 input_line_pointer
++;
5127 sort
= get_absolute_expression ();
5129 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5131 *input_line_pointer
= c
;
5134 else if ((strncasecmp (name
, "NOTDEFINED", 10) == 0))
5136 *input_line_pointer
= c
;
5139 else if ((strncasecmp (name
, "PRIVATE", 7) == 0))
5141 *input_line_pointer
= c
;
5146 as_bad ("Invalid .SPACE argument");
5147 *input_line_pointer
= c
;
5148 if (!is_end_of_statement ())
5149 input_line_pointer
++;
5153 print_errors
= TRUE
;
5156 if (create_flag
&& seg
== NULL
)
5157 seg
= subseg_new (space_name
, 0);
5159 /* If create_flag is nonzero, then create the new space with
5160 the attributes computed above. Else set the values in
5161 an already existing space -- this can only happen for
5162 the first occurence of a built-in space. */
5164 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5165 private, sort
, seg
, 1);
5168 space
= is_defined_space (space_name
);
5169 SPACE_SPNUM (space
) = spnum
;
5170 SPACE_LOADABLE (space
) = loadable
& 1;
5171 SPACE_DEFINED (space
) = defined
& 1;
5172 SPACE_USER_DEFINED (space
) = 1;
5173 SPACE_PRIVATE (space
) = private & 1;
5174 SPACE_SORT (space
) = sort
& 0xff;
5175 space
->sd_seg
= seg
;
5178 #ifdef obj_set_section_attributes
5179 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5185 /* Handle a .SPACE pseudo-op; this switches the current space to the
5186 given space, creating the new space if necessary. */
5192 char *name
, c
, *space_name
, *save_s
;
5194 sd_chain_struct
*sd_chain
;
5196 if (within_procedure
)
5198 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5199 ignore_rest_of_line ();
5203 /* Check for some of the predefined spaces. FIXME: most of the code
5204 below is repeated several times, can we extract the common parts
5205 and place them into a subroutine or something similar? */
5206 if (strncasecmp (input_line_pointer
, "$text$", 6) == 0)
5208 input_line_pointer
+= 6;
5209 sd_chain
= is_defined_space ("$TEXT$");
5210 if (sd_chain
== NULL
)
5211 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5212 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5213 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5215 current_space
= sd_chain
;
5216 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5218 = pa_subsegment_to_subspace (text_section
,
5219 sd_chain
->sd_last_subseg
);
5220 demand_empty_rest_of_line ();
5223 if (strncasecmp (input_line_pointer
, "$private$", 9) == 0)
5225 input_line_pointer
+= 9;
5226 sd_chain
= is_defined_space ("$PRIVATE$");
5227 if (sd_chain
== NULL
)
5228 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5229 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5230 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5232 current_space
= sd_chain
;
5233 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5235 = pa_subsegment_to_subspace (data_section
,
5236 sd_chain
->sd_last_subseg
);
5237 demand_empty_rest_of_line ();
5240 if (!strncasecmp (input_line_pointer
,
5241 GDB_DEBUG_SPACE_NAME
,
5242 strlen (GDB_DEBUG_SPACE_NAME
)))
5244 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5245 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5246 if (sd_chain
== NULL
)
5247 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5248 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5249 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5251 current_space
= sd_chain
;
5254 asection
*gdb_section
5255 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5257 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5259 = pa_subsegment_to_subspace (gdb_section
,
5260 sd_chain
->sd_last_subseg
);
5262 demand_empty_rest_of_line ();
5266 /* It could be a space specified by number. */
5268 save_s
= input_line_pointer
;
5269 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5271 if (sd_chain
= pa_find_space_by_number (temp
))
5273 current_space
= sd_chain
;
5275 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5277 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5278 sd_chain
->sd_last_subseg
);
5279 demand_empty_rest_of_line ();
5284 /* Not a number, attempt to create a new space. */
5286 input_line_pointer
= save_s
;
5287 name
= input_line_pointer
;
5288 c
= get_symbol_end ();
5289 space_name
= xmalloc (strlen (name
) + 1);
5290 strcpy (space_name
, name
);
5291 *input_line_pointer
= c
;
5293 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5294 current_space
= sd_chain
;
5296 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5297 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5298 sd_chain
->sd_last_subseg
);
5299 demand_empty_rest_of_line ();
5304 /* Switch to a new space. (I think). FIXME. */
5313 sd_chain_struct
*space
;
5315 name
= input_line_pointer
;
5316 c
= get_symbol_end ();
5317 space
= is_defined_space (name
);
5321 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5324 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5326 *input_line_pointer
= c
;
5327 demand_empty_rest_of_line ();
5331 /* If VALUE is an exact power of two between zero and 2^31, then
5332 return log2 (VALUE). Else return -1. */
5340 while ((1 << shift
) != value
&& shift
< 32)
5349 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5350 given subspace, creating the new subspace if necessary.
5352 FIXME. Should mirror pa_space more closely, in particular how
5353 they're broken up into subroutines. */
5356 pa_subspace (unused
)
5359 char *name
, *ss_name
, *alias
, c
;
5360 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5361 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5362 sd_chain_struct
*space
;
5363 ssd_chain_struct
*ssd
;
5366 if (within_procedure
)
5368 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5369 ignore_rest_of_line ();
5373 name
= input_line_pointer
;
5374 c
= get_symbol_end ();
5375 ss_name
= xmalloc (strlen (name
) + 1);
5376 strcpy (ss_name
, name
);
5377 *input_line_pointer
= c
;
5379 /* Load default values. */
5392 space
= current_space
;
5393 ssd
= is_defined_subspace (ss_name
);
5394 /* Allow user to override the builtin attributes of subspaces. But
5395 only allow the attributes to be changed once! */
5396 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5398 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5399 if (!is_end_of_statement ())
5400 as_warn ("Parameters of an existing subspace can\'t be modified");
5401 demand_empty_rest_of_line ();
5406 /* A new subspace. Load default values if it matches one of
5407 the builtin subspaces. */
5409 while (pa_def_subspaces
[i
].name
)
5411 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5413 loadable
= pa_def_subspaces
[i
].loadable
;
5414 common
= pa_def_subspaces
[i
].common
;
5415 dup_common
= pa_def_subspaces
[i
].dup_common
;
5416 code_only
= pa_def_subspaces
[i
].code_only
;
5417 zero
= pa_def_subspaces
[i
].zero
;
5418 space_index
= pa_def_subspaces
[i
].space_index
;
5419 alignment
= pa_def_subspaces
[i
].alignment
;
5420 quadrant
= pa_def_subspaces
[i
].quadrant
;
5421 access
= pa_def_subspaces
[i
].access
;
5422 sort
= pa_def_subspaces
[i
].sort
;
5423 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5424 alias
= pa_def_subspaces
[i
].alias
;
5431 /* We should be working with a new subspace now. Fill in
5432 any information as specified by the user. */
5433 if (!is_end_of_statement ())
5435 input_line_pointer
++;
5436 while (!is_end_of_statement ())
5438 name
= input_line_pointer
;
5439 c
= get_symbol_end ();
5440 if ((strncasecmp (name
, "QUAD", 4) == 0))
5442 *input_line_pointer
= c
;
5443 input_line_pointer
++;
5444 quadrant
= get_absolute_expression ();
5446 else if ((strncasecmp (name
, "ALIGN", 5) == 0))
5448 *input_line_pointer
= c
;
5449 input_line_pointer
++;
5450 alignment
= get_absolute_expression ();
5451 if (log2 (alignment
) == -1)
5453 as_bad ("Alignment must be a power of 2");
5457 else if ((strncasecmp (name
, "ACCESS", 6) == 0))
5459 *input_line_pointer
= c
;
5460 input_line_pointer
++;
5461 access
= get_absolute_expression ();
5463 else if ((strncasecmp (name
, "SORT", 4) == 0))
5465 *input_line_pointer
= c
;
5466 input_line_pointer
++;
5467 sort
= get_absolute_expression ();
5469 else if ((strncasecmp (name
, "CODE_ONLY", 9) == 0))
5471 *input_line_pointer
= c
;
5474 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5476 *input_line_pointer
= c
;
5479 else if ((strncasecmp (name
, "COMMON", 6) == 0))
5481 *input_line_pointer
= c
;
5484 else if ((strncasecmp (name
, "DUP_COMM", 8) == 0))
5486 *input_line_pointer
= c
;
5489 else if ((strncasecmp (name
, "ZERO", 4) == 0))
5491 *input_line_pointer
= c
;
5494 else if ((strncasecmp (name
, "FIRST", 5) == 0))
5495 as_bad ("FIRST not supported as a .SUBSPACE argument");
5497 as_bad ("Invalid .SUBSPACE argument");
5498 if (!is_end_of_statement ())
5499 input_line_pointer
++;
5503 /* Compute a reasonable set of BFD flags based on the information
5504 in the .subspace directive. */
5505 applicable
= bfd_applicable_section_flags (stdoutput
);
5508 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5511 if (common
|| dup_common
)
5512 flags
|= SEC_IS_COMMON
;
5514 /* This is a zero-filled subspace (eg BSS). */
5518 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5519 applicable
&= flags
;
5521 /* If this is an existing subspace, then we want to use the
5522 segment already associated with the subspace.
5524 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5525 lots of sections. It might be a problem in the PA ELF
5526 code, I do not know yet. For now avoid creating anything
5527 but the "standard" sections for ELF. */
5529 section
= ssd
->ssd_seg
;
5531 section
= subseg_new (alias
, 0);
5532 else if (!alias
&& USE_ALIASES
)
5534 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5535 demand_empty_rest_of_line ();
5539 section
= subseg_new (ss_name
, 0);
5541 /* Now set the flags. */
5542 bfd_set_section_flags (stdoutput
, section
, applicable
);
5544 /* Record any alignment request for this section. */
5545 record_alignment (section
, log2 (alignment
));
5547 /* Set the starting offset for this section. */
5548 bfd_set_section_vma (stdoutput
, section
,
5549 pa_subspace_start (space
, quadrant
));
5551 /* Now that all the flags are set, update an existing subspace,
5552 or create a new one. */
5555 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5556 code_only
, common
, dup_common
,
5557 sort
, zero
, access
, space_index
,
5558 alignment
, quadrant
,
5561 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5563 dup_common
, zero
, sort
,
5564 access
, space_index
,
5565 alignment
, quadrant
, section
);
5567 demand_empty_rest_of_line ();
5568 current_subspace
->ssd_seg
= section
;
5569 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5571 SUBSPACE_DEFINED (current_subspace
) = 1;
5576 /* Create default space and subspace dictionaries. */
5583 space_dict_root
= NULL
;
5584 space_dict_last
= NULL
;
5587 while (pa_def_spaces
[i
].name
)
5591 /* Pick the right name to use for the new section. */
5592 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5593 name
= pa_def_spaces
[i
].alias
;
5595 name
= pa_def_spaces
[i
].name
;
5597 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5598 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5599 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5600 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5601 pa_def_spaces
[i
].segment
, 0);
5606 while (pa_def_subspaces
[i
].name
)
5609 int applicable
, subsegment
;
5610 asection
*segment
= NULL
;
5611 sd_chain_struct
*space
;
5613 /* Pick the right name for the new section and pick the right
5614 subsegment number. */
5615 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5617 name
= pa_def_subspaces
[i
].alias
;
5618 subsegment
= pa_def_subspaces
[i
].subsegment
;
5622 name
= pa_def_subspaces
[i
].name
;
5626 /* Create the new section. */
5627 segment
= subseg_new (name
, subsegment
);
5630 /* For SOM we want to replace the standard .text, .data, and .bss
5631 sections with our own. */
5632 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5634 text_section
= segment
;
5635 applicable
= bfd_applicable_section_flags (stdoutput
);
5636 bfd_set_section_flags (stdoutput
, text_section
,
5637 applicable
& (SEC_ALLOC
| SEC_LOAD
5638 | SEC_RELOC
| SEC_CODE
5640 | SEC_HAS_CONTENTS
));
5642 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5644 data_section
= segment
;
5645 applicable
= bfd_applicable_section_flags (stdoutput
);
5646 bfd_set_section_flags (stdoutput
, data_section
,
5647 applicable
& (SEC_ALLOC
| SEC_LOAD
5649 | SEC_HAS_CONTENTS
));
5653 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5655 bss_section
= segment
;
5656 applicable
= bfd_applicable_section_flags (stdoutput
);
5657 bfd_set_section_flags (stdoutput
, bss_section
,
5658 applicable
& SEC_ALLOC
);
5661 /* Find the space associated with this subspace. */
5662 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5663 def_space_index
].segment
);
5666 as_fatal ("Internal error: Unable to find containing space for %s.",
5667 pa_def_subspaces
[i
].name
);
5670 create_new_subspace (space
, name
,
5671 pa_def_subspaces
[i
].loadable
,
5672 pa_def_subspaces
[i
].code_only
,
5673 pa_def_subspaces
[i
].common
,
5674 pa_def_subspaces
[i
].dup_common
,
5675 pa_def_subspaces
[i
].zero
,
5676 pa_def_subspaces
[i
].sort
,
5677 pa_def_subspaces
[i
].access
,
5678 pa_def_subspaces
[i
].space_index
,
5679 pa_def_subspaces
[i
].alignment
,
5680 pa_def_subspaces
[i
].quadrant
,
5688 /* Create a new space NAME, with the appropriate flags as defined
5689 by the given parameters.
5691 Add the new space to the space dictionary chain in numerical
5692 order as defined by the SORT entries. */
5694 static sd_chain_struct
*
5695 create_new_space (name
, spnum
, loadable
, defined
, private,
5696 sort
, seg
, user_defined
)
5706 sd_chain_struct
*chain_entry
;
5708 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5710 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5713 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5714 strcpy (SPACE_NAME (chain_entry
), name
);
5715 SPACE_NAME_INDEX (chain_entry
) = 0;
5716 SPACE_LOADABLE (chain_entry
) = loadable
;
5717 SPACE_DEFINED (chain_entry
) = defined
;
5718 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5719 SPACE_PRIVATE (chain_entry
) = private;
5720 SPACE_SPNUM (chain_entry
) = spnum
;
5721 SPACE_SORT (chain_entry
) = sort
;
5723 chain_entry
->sd_seg
= seg
;
5724 chain_entry
->sd_last_subseg
= -1;
5725 chain_entry
->sd_next
= NULL
;
5727 /* Find spot for the new space based on its sort key. */
5728 if (!space_dict_last
)
5729 space_dict_last
= chain_entry
;
5731 if (space_dict_root
== NULL
)
5732 space_dict_root
= chain_entry
;
5735 sd_chain_struct
*chain_pointer
;
5736 sd_chain_struct
*prev_chain_pointer
;
5738 chain_pointer
= space_dict_root
;
5739 prev_chain_pointer
= NULL
;
5741 while (chain_pointer
)
5743 if (SPACE_SORT (chain_pointer
) <= SPACE_SORT (chain_entry
))
5745 prev_chain_pointer
= chain_pointer
;
5746 chain_pointer
= chain_pointer
->sd_next
;
5752 /* At this point we've found the correct place to add the new
5753 entry. So add it and update the linked lists as appropriate. */
5754 if (prev_chain_pointer
)
5756 chain_entry
->sd_next
= chain_pointer
;
5757 prev_chain_pointer
->sd_next
= chain_entry
;
5761 space_dict_root
= chain_entry
;
5762 chain_entry
->sd_next
= chain_pointer
;
5765 if (chain_entry
->sd_next
== NULL
)
5766 space_dict_last
= chain_entry
;
5769 /* This is here to catch predefined spaces which do not get
5770 modified by the user's input. Another call is found at
5771 the bottom of pa_parse_space_stmt to handle cases where
5772 the user modifies a predefined space. */
5773 #ifdef obj_set_section_attributes
5774 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5780 /* Create a new subspace NAME, with the appropriate flags as defined
5781 by the given parameters.
5783 Add the new subspace to the subspace dictionary chain in numerical
5784 order as defined by the SORT entries. */
5786 static ssd_chain_struct
*
5787 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5788 dup_common
, is_zero
, sort
, access
, space_index
,
5789 alignment
, quadrant
, seg
)
5790 sd_chain_struct
*space
;
5792 char loadable
, code_only
, common
, dup_common
, is_zero
;
5800 ssd_chain_struct
*chain_entry
;
5802 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5804 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5806 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5807 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5809 SUBSPACE_ACCESS (chain_entry
) = access
;
5810 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5811 SUBSPACE_COMMON (chain_entry
) = common
;
5812 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5813 SUBSPACE_SORT (chain_entry
) = sort
;
5814 SUBSPACE_CODE_ONLY (chain_entry
) = code_only
;
5815 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5816 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5817 SUBSPACE_SUBSPACE_START (chain_entry
) = pa_subspace_start (space
, quadrant
);
5818 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5819 SUBSPACE_ZERO (chain_entry
) = is_zero
;
5821 /* Initialize subspace_defined. When we hit a .subspace directive
5822 we'll set it to 1 which "locks-in" the subspace attributes. */
5823 SUBSPACE_DEFINED (chain_entry
) = 0;
5825 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5826 chain_entry
->ssd_seg
= seg
;
5827 chain_entry
->ssd_last_align
= 1;
5828 chain_entry
->ssd_next
= NULL
;
5830 /* Find spot for the new subspace based on its sort key. */
5831 if (space
->sd_subspaces
== NULL
)
5832 space
->sd_subspaces
= chain_entry
;
5835 ssd_chain_struct
*chain_pointer
;
5836 ssd_chain_struct
*prev_chain_pointer
;
5838 chain_pointer
= space
->sd_subspaces
;
5839 prev_chain_pointer
= NULL
;
5841 while (chain_pointer
)
5843 if (SUBSPACE_SORT (chain_pointer
) <= SUBSPACE_SORT (chain_entry
))
5845 prev_chain_pointer
= chain_pointer
;
5846 chain_pointer
= chain_pointer
->ssd_next
;
5853 /* Now we have somewhere to put the new entry. Insert it and update
5855 if (prev_chain_pointer
)
5857 chain_entry
->ssd_next
= chain_pointer
;
5858 prev_chain_pointer
->ssd_next
= chain_entry
;
5862 space
->sd_subspaces
= chain_entry
;
5863 chain_entry
->ssd_next
= chain_pointer
;
5867 #ifdef obj_set_subsection_attributes
5868 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5876 /* Update the information for the given subspace based upon the
5877 various arguments. Return the modified subspace chain entry. */
5879 static ssd_chain_struct
*
5880 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5881 zero
, access
, space_index
, alignment
, quadrant
, section
)
5882 sd_chain_struct
*space
;
5896 ssd_chain_struct
*chain_entry
;
5898 if ((chain_entry
= is_defined_subspace (name
)))
5900 SUBSPACE_ACCESS (chain_entry
) = access
;
5901 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5902 SUBSPACE_COMMON (chain_entry
) = common
;
5903 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5904 SUBSPACE_CODE_ONLY (chain_entry
) = 1;
5905 SUBSPACE_SORT (chain_entry
) = sort
;
5906 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5907 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5908 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5909 SUBSPACE_ZERO (chain_entry
) = zero
;
5914 #ifdef obj_set_subsection_attributes
5915 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5923 /* Return the space chain entry for the space with the name NAME or
5924 NULL if no such space exists. */
5926 static sd_chain_struct
*
5927 is_defined_space (name
)
5930 sd_chain_struct
*chain_pointer
;
5932 for (chain_pointer
= space_dict_root
;
5934 chain_pointer
= chain_pointer
->sd_next
)
5936 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5937 return chain_pointer
;
5940 /* No mapping from segment to space was found. Return NULL. */
5944 /* Find and return the space associated with the given seg. If no mapping
5945 from the given seg to a space is found, then return NULL.
5947 Unlike subspaces, the number of spaces is not expected to grow much,
5948 so a linear exhaustive search is OK here. */
5950 static sd_chain_struct
*
5951 pa_segment_to_space (seg
)
5954 sd_chain_struct
*space_chain
;
5956 /* Walk through each space looking for the correct mapping. */
5957 for (space_chain
= space_dict_root
;
5959 space_chain
= space_chain
->sd_next
)
5961 if (space_chain
->sd_seg
== seg
)
5965 /* Mapping was not found. Return NULL. */
5969 /* Return the space chain entry for the subspace with the name NAME or
5970 NULL if no such subspace exists.
5972 Uses a linear search through all the spaces and subspaces, this may
5973 not be appropriate if we ever being placing each function in its
5976 static ssd_chain_struct
*
5977 is_defined_subspace (name
)
5980 sd_chain_struct
*space_chain
;
5981 ssd_chain_struct
*subspace_chain
;
5983 /* Walk through each space. */
5984 for (space_chain
= space_dict_root
;
5986 space_chain
= space_chain
->sd_next
)
5988 /* Walk through each subspace looking for a name which matches. */
5989 for (subspace_chain
= space_chain
->sd_subspaces
;
5991 subspace_chain
= subspace_chain
->ssd_next
)
5992 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5993 return subspace_chain
;
5996 /* Subspace wasn't found. Return NULL. */
6000 /* Find and return the subspace associated with the given seg. If no
6001 mapping from the given seg to a subspace is found, then return NULL.
6003 If we ever put each procedure/function within its own subspace
6004 (to make life easier on the compiler and linker), then this will have
6005 to become more efficient. */
6007 static ssd_chain_struct
*
6008 pa_subsegment_to_subspace (seg
, subseg
)
6012 sd_chain_struct
*space_chain
;
6013 ssd_chain_struct
*subspace_chain
;
6015 /* Walk through each space. */
6016 for (space_chain
= space_dict_root
;
6018 space_chain
= space_chain
->sd_next
)
6020 if (space_chain
->sd_seg
== seg
)
6022 /* Walk through each subspace within each space looking for
6023 the correct mapping. */
6024 for (subspace_chain
= space_chain
->sd_subspaces
;
6026 subspace_chain
= subspace_chain
->ssd_next
)
6027 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6028 return subspace_chain
;
6032 /* No mapping from subsegment to subspace found. Return NULL. */
6036 /* Given a number, try and find a space with the name number.
6038 Return a pointer to a space dictionary chain entry for the space
6039 that was found or NULL on failure. */
6041 static sd_chain_struct
*
6042 pa_find_space_by_number (number
)
6045 sd_chain_struct
*space_chain
;
6047 for (space_chain
= space_dict_root
;
6049 space_chain
= space_chain
->sd_next
)
6051 if (SPACE_SPNUM (space_chain
) == number
)
6055 /* No appropriate space found. Return NULL. */
6059 /* Return the starting address for the given subspace. If the starting
6060 address is unknown then return zero. */
6063 pa_subspace_start (space
, quadrant
)
6064 sd_chain_struct
*space
;
6067 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6068 is not correct for the PA OSF1 port. */
6069 if ((strcasecmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6071 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6077 /* FIXME. Needs documentation. */
6079 pa_next_subseg (space
)
6080 sd_chain_struct
*space
;
6083 space
->sd_last_subseg
++;
6084 return space
->sd_last_subseg
;
6087 /* Helper function for pa_stringer. Used to find the end of
6094 unsigned int c
= *s
& CHAR_MASK
;
6106 /* Handle a .STRING type pseudo-op. */
6109 pa_stringer (append_zero
)
6112 char *s
, num_buf
[4];
6116 /* Preprocess the string to handle PA-specific escape sequences.
6117 For example, \xDD where DD is a hexidecimal number should be
6118 changed to \OOO where OOO is an octal number. */
6120 /* Skip the opening quote. */
6121 s
= input_line_pointer
+ 1;
6123 while (is_a_char (c
= pa_stringer_aux (s
++)))
6130 /* Handle \x<num>. */
6133 unsigned int number
;
6138 /* Get pas the 'x'. */
6140 for (num_digit
= 0, number
= 0, dg
= *s
;
6142 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6143 || (dg
>= 'A' && dg
<= 'F'));
6147 number
= number
* 16 + dg
- '0';
6148 else if (dg
>= 'a' && dg
<= 'f')
6149 number
= number
* 16 + dg
- 'a' + 10;
6151 number
= number
* 16 + dg
- 'A' + 10;
6161 sprintf (num_buf
, "%02o", number
);
6164 sprintf (num_buf
, "%03o", number
);
6167 for (i
= 0; i
<= num_digit
; i
++)
6168 s_start
[i
] = num_buf
[i
];
6172 /* This might be a "\"", skip over the escaped char. */
6179 stringer (append_zero
);
6180 pa_undefine_label ();
6183 /* Handle a .VERSION pseudo-op. */
6190 pa_undefine_label ();
6193 /* Just like a normal cons, but when finished we have to undefine
6194 the latest space label. */
6201 pa_undefine_label ();
6204 /* Switch to the data space. As usual delete our label. */
6211 pa_undefine_label ();
6214 /* FIXME. What's the purpose of this pseudo-op? */
6220 pa_undefine_label ();
6223 /* Like float_cons, but we need to undefine our label. */
6226 pa_float_cons (float_type
)
6229 float_cons (float_type
);
6230 pa_undefine_label ();
6233 /* Like s_fill, but delete our label when finished. */
6240 pa_undefine_label ();
6243 /* Like lcomm, but delete our label when finished. */
6246 pa_lcomm (needs_align
)
6249 s_lcomm (needs_align
);
6250 pa_undefine_label ();
6253 /* Like lsym, but delete our label when finished. */
6260 pa_undefine_label ();
6263 /* Switch to the text space. Like s_text, but delete our
6264 label when finished. */
6270 pa_undefine_label ();
6273 /* On the PA relocations which involve function symbols must not be
6274 adjusted. This so that the linker can know when/how to create argument
6275 relocation stubs for indirect calls and calls to static functions.
6277 FIXME. Also reject R_HPPA relocations which are 32 bits
6278 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6279 needs to generate relocations to push the addend and symbol value
6280 onto the stack, add them, then pop the value off the stack and
6281 use it in a relocation -- yuk. */
6284 hppa_fix_adjustable (fixp
)
6287 struct hppa_fix_struct
*hppa_fix
;
6289 hppa_fix
= fixp
->tc_fix_data
;
6291 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6294 if (fixp
->fx_addsy
== 0
6295 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6301 /* Return nonzero if the fixup in FIXP will require a relocation,
6302 even it if appears that the fixup could be completely handled
6306 hppa_force_relocation (fixp
)
6309 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
6312 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6316 #define stub_needed(CALLER, CALLEE) \
6317 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6319 /* It is necessary to force PC-relative calls/jumps to have a relocation
6320 entry if they're going to need either a argument relocation or long
6321 call stub. FIXME. Can't we need the same for absolute calls? */
6323 && (stub_needed (((obj_symbol_type
*)
6324 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6325 hppa_fixp
->fx_arg_reloc
)))
6330 /* No need (yet) to force another relocations to be emitted. */
6334 /* Now for some ELF specific code. FIXME. */
6336 static symext_chainS
*symext_rootP
;
6337 static symext_chainS
*symext_lastP
;
6339 /* Mark the end of a function so that it's possible to compute
6340 the size of the function in hppa_elf_final_processing. */
6343 hppa_elf_mark_end_of_function ()
6345 /* ELF does not have EXIT relocations. All we do is create a
6346 temporary symbol marking the end of the function. */
6347 char *name
= (char *)
6348 xmalloc (strlen ("L$\001end_") +
6349 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6355 strcpy (name
, "L$\001end_");
6356 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6358 /* If we have a .exit followed by a .procend, then the
6359 symbol will have already been defined. */
6360 symbolP
= symbol_find (name
);
6363 /* The symbol has already been defined! This can
6364 happen if we have a .exit followed by a .procend.
6366 This is *not* an error. All we want to do is free
6367 the memory we just allocated for the name and continue. */
6372 /* symbol value should be the offset of the
6373 last instruction of the function */
6374 symbolP
= symbol_new (name
, now_seg
,
6375 (valueT
) (obstack_next_free (&frags
)
6376 - frag_now
->fr_literal
- 4),
6380 symbolP
->bsym
->flags
= BSF_LOCAL
;
6381 symbol_table_insert (symbolP
);
6385 last_call_info
->end_symbol
= symbolP
;
6387 as_bad ("Symbol '%s' could not be created.", name
);
6391 as_bad ("No memory for symbol name.");
6393 /* Stuff away the location of the frag for the end of the function,
6394 and call pa_build_unwind_subspace to add an entry in the unwind
6396 last_call_info
->end_frag
= frag_now
;
6399 /* Do any symbol processing requested by the target-cpu or target-format. */
6402 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6404 elf_symbol_type
*symbolP
;
6407 symext_chainS
*symextP
;
6408 unsigned int arg_reloc
;
6410 /* Only functions can have argument relocations. */
6411 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6414 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6416 /* If there are no argument relocation bits, then no relocation is
6417 necessary. Do not add this to the symextn section. */
6421 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6423 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6424 symextP
[0].next
= &symextP
[1];
6426 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6427 symextP
[1].next
= NULL
;
6429 if (symext_rootP
== NULL
)
6431 symext_rootP
= &symextP
[0];
6432 symext_lastP
= &symextP
[1];
6436 symext_lastP
->next
= &symextP
[0];
6437 symext_lastP
= &symextP
[1];
6441 /* Make sections needed by the target cpu and/or target format. */
6443 hppa_tc_make_sections (abfd
)
6446 symext_chainS
*symextP
;
6448 asection
*symextn_sec
;
6449 segT save_seg
= now_seg
;
6450 subsegT save_subseg
= now_subseg
;
6452 /* Build the symbol extension section. */
6453 hppa_tc_make_symextn_section ();
6455 /* Force some calculation to occur. */
6456 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6458 hppa_elf_stub_finish (abfd
);
6460 /* If no symbols for the symbol extension section, then stop now. */
6461 if (symext_rootP
== NULL
)
6464 /* Count the number of symbols for the symbol extension section. */
6465 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6468 size
= sizeof (symext_entryS
) * n
;
6470 /* Switch to the symbol extension section. */
6471 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6473 frag_wane (frag_now
);
6476 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6479 int *symtab_map
= elf_sym_extra (abfd
);
6482 /* First, patch the symbol extension record to reflect the true
6483 symbol table index. */
6485 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6487 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6488 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6492 ptr
= frag_more (sizeof (symextP
->entry
));
6493 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6496 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6497 frag_wane (frag_now
);
6499 /* Switch back to the original segment. */
6500 subseg_set (save_seg
, save_subseg
);
6505 /* Make the symbol extension section. */
6508 hppa_tc_make_symextn_section ()
6512 symext_chainS
*symextP
;
6516 segT save_seg
= now_seg
;
6517 subsegT save_subseg
= now_subseg
;
6519 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6522 size
= sizeof (symext_entryS
) * n
;
6524 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6526 bfd_set_section_flags (stdoutput
, symextn_sec
,
6527 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6528 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6530 /* Now, switch back to the original segment. */
6531 subseg_set (save_seg
, save_subseg
);
6535 /* Build the symbol extension section. */
6538 pa_build_symextn_section ()
6541 asection
*save_seg
= now_seg
;
6542 subsegT subseg
= (subsegT
) 0;
6543 subsegT save_subseg
= now_subseg
;
6545 seg
= subseg_new (".hppa_symextn", subseg
);
6546 bfd_set_section_flags (stdoutput
,
6548 SEC_HAS_CONTENTS
| SEC_READONLY
6549 | SEC_ALLOC
| SEC_LOAD
);
6551 subseg_set (save_seg
, save_subseg
);
6555 /* For ELF, this function serves one purpose: to setup the st_size
6556 field of STT_FUNC symbols. To do this, we need to scan the
6557 call_info structure list, determining st_size in one of two possible
6560 1. call_info->start_frag->fr_fix has the size of the fragment.
6561 This approach assumes that the function was built into a
6562 single fragment. This works for most cases, but might fail.
6563 For example, if there was a segment change in the middle of
6566 2. The st_size field is the difference in the addresses of the
6567 call_info->start_frag->fr_address field and the fr_address
6568 field of the next fragment with fr_type == rs_fill and
6572 elf_hppa_final_processing ()
6574 struct call_info
*call_info_pointer
;
6576 for (call_info_pointer
= call_info_root
;
6578 call_info_pointer
= call_info_pointer
->ci_next
)
6580 elf_symbol_type
*esym
6581 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6582 esym
->internal_elf_sym
.st_size
=
6583 S_GET_VALUE (call_info_pointer
->end_symbol
)
6584 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;