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 void pa_align_subseg
PARAMS ((asection
*, subsegT
));
622 static int log2
PARAMS ((int));
623 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
624 static unsigned int pa_stringer_aux
PARAMS ((char *));
625 static void pa_spaces_begin
PARAMS ((void));
628 /* File and gloally scoped variable declarations. */
630 /* Root and final entry in the space chain. */
631 static sd_chain_struct
*space_dict_root
;
632 static sd_chain_struct
*space_dict_last
;
634 /* The current space and subspace. */
635 static sd_chain_struct
*current_space
;
636 static ssd_chain_struct
*current_subspace
;
638 /* Root of the call_info chain. */
639 static struct call_info
*call_info_root
;
641 /* The last call_info (for functions) structure
642 seen so it can be associated with fixups and
644 static struct call_info
*last_call_info
;
646 /* The last call description (for actual calls). */
647 static struct call_desc last_call_desc
;
649 /* Relaxation isn't supported for the PA yet. */
650 const relax_typeS md_relax_table
[] =
653 /* Jumps are always the same size -- one instruction. */
654 int md_short_jump_size
= 4;
655 int md_long_jump_size
= 4;
657 /* handle of the OPCODE hash table */
658 static struct hash_control
*op_hash
= NULL
;
660 /* This array holds the chars that always start a comment. If the
661 pre-processor is disabled, these aren't very useful. */
662 const char comment_chars
[] = ";";
664 /* Table of pseudo ops for the PA. FIXME -- how many of these
665 are now redundant with the overall GAS and the object file
667 const pseudo_typeS md_pseudo_table
[] =
669 /* align pseudo-ops on the PA specify the actual alignment requested,
670 not the log2 of the requested alignment. */
671 {"align", s_align_bytes
, 8},
672 {"ALIGN", s_align_bytes
, 8},
673 {"block", pa_block
, 1},
674 {"BLOCK", pa_block
, 1},
675 {"blockz", pa_block
, 0},
676 {"BLOCKZ", pa_block
, 0},
677 {"byte", pa_cons
, 1},
678 {"BYTE", pa_cons
, 1},
679 {"call", pa_call
, 0},
680 {"CALL", pa_call
, 0},
681 {"callinfo", pa_callinfo
, 0},
682 {"CALLINFO", pa_callinfo
, 0},
683 {"code", pa_code
, 0},
684 {"CODE", pa_code
, 0},
685 {"comm", pa_comm
, 0},
686 {"COMM", pa_comm
, 0},
687 {"copyright", pa_copyright
, 0},
688 {"COPYRIGHT", pa_copyright
, 0},
689 {"data", pa_data
, 0},
690 {"DATA", pa_data
, 0},
691 {"desc", pa_desc
, 0},
692 {"DESC", pa_desc
, 0},
693 {"double", pa_float_cons
, 'd'},
694 {"DOUBLE", pa_float_cons
, 'd'},
697 {"enter", pa_enter
, 0},
698 {"ENTER", pa_enter
, 0},
699 {"entry", pa_entry
, 0},
700 {"ENTRY", pa_entry
, 0},
703 {"exit", pa_exit
, 0},
704 {"EXIT", pa_exit
, 0},
705 {"export", pa_export
, 0},
706 {"EXPORT", pa_export
, 0},
707 {"fill", pa_fill
, 0},
708 {"FILL", pa_fill
, 0},
709 {"float", pa_float_cons
, 'f'},
710 {"FLOAT", pa_float_cons
, 'f'},
711 {"half", pa_cons
, 2},
712 {"HALF", pa_cons
, 2},
713 {"import", pa_import
, 0},
714 {"IMPORT", pa_import
, 0},
717 {"label", pa_label
, 0},
718 {"LABEL", pa_label
, 0},
719 {"lcomm", pa_lcomm
, 0},
720 {"LCOMM", pa_lcomm
, 0},
721 {"leave", pa_leave
, 0},
722 {"LEAVE", pa_leave
, 0},
723 {"long", pa_cons
, 4},
724 {"LONG", pa_cons
, 4},
725 {"lsym", pa_lsym
, 0},
726 {"LSYM", pa_lsym
, 0},
727 {"octa", pa_cons
, 16},
728 {"OCTA", pa_cons
, 16},
729 {"org", pa_origin
, 0},
730 {"ORG", pa_origin
, 0},
731 {"origin", pa_origin
, 0},
732 {"ORIGIN", pa_origin
, 0},
733 {"param", pa_param
, 0},
734 {"PARAM", pa_param
, 0},
735 {"proc", pa_proc
, 0},
736 {"PROC", pa_proc
, 0},
737 {"procend", pa_procend
, 0},
738 {"PROCEND", pa_procend
, 0},
739 {"quad", pa_cons
, 8},
740 {"QUAD", pa_cons
, 8},
743 {"short", pa_cons
, 2},
744 {"SHORT", pa_cons
, 2},
745 {"single", pa_float_cons
, 'f'},
746 {"SINGLE", pa_float_cons
, 'f'},
747 {"space", pa_space
, 0},
748 {"SPACE", pa_space
, 0},
749 {"spnum", pa_spnum
, 0},
750 {"SPNUM", pa_spnum
, 0},
751 {"string", pa_stringer
, 0},
752 {"STRING", pa_stringer
, 0},
753 {"stringz", pa_stringer
, 1},
754 {"STRINGZ", pa_stringer
, 1},
755 {"subspa", pa_subspace
, 0},
756 {"SUBSPA", pa_subspace
, 0},
757 {"text", pa_text
, 0},
758 {"TEXT", pa_text
, 0},
759 {"version", pa_version
, 0},
760 {"VERSION", pa_version
, 0},
761 {"word", pa_cons
, 4},
762 {"WORD", pa_cons
, 4},
766 /* This array holds the chars that only start a comment at the beginning of
767 a line. If the line seems to have the form '# 123 filename'
768 .line and .file directives will appear in the pre-processed output.
770 Note that input_file.c hand checks for '#' at the beginning of the
771 first line of the input file. This is because the compiler outputs
772 #NO_APP at the beginning of its output.
774 Also note that '/*' will always start a comment. */
775 const char line_comment_chars
[] = "#";
777 /* This array holds the characters which act as line separators. */
778 const char line_separator_chars
[] = "!";
780 /* Chars that can be used to separate mant from exp in floating point nums. */
781 const char EXP_CHARS
[] = "eE";
783 /* Chars that mean this number is a floating point constant.
784 As in 0f12.456 or 0d1.2345e12.
786 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
787 changed in read.c. Ideally it shouldn't hae to know abou it at
788 all, but nothing is ideal around here. */
789 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
791 static struct pa_it the_insn
;
793 /* Points to the end of an expression just parsed by get_expressoin
794 and friends. FIXME. This shouldn't be handled with a file-global
796 static char *expr_end
;
798 /* Nonzero if a .callinfo appeared within the current procedure. */
799 static int callinfo_found
;
801 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
802 static int within_entry_exit
;
804 /* Nonzero if the assembler is currently within a procedure definition. */
805 static int within_procedure
;
807 /* Handle on strucutre which keep track of the last symbol
808 seen in each subspace. */
809 static label_symbol_struct
*label_symbols_rootp
= NULL
;
811 /* Holds the last field selector. */
812 static int hppa_field_selector
;
814 /* Nonzero if errors are to be printed. */
815 static int print_errors
= 1;
817 /* List of registers that are pre-defined:
819 Each general register has one predefined name of the form
820 %r<REGNUM> which has the value <REGNUM>.
822 Space and control registers are handled in a similar manner,
823 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
825 Likewise for the floating point registers, but of the form
826 %fr<REGNUM>. Floating point registers have additional predefined
827 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
828 again have the value <REGNUM>.
830 Many registers also have synonyms:
832 %r26 - %r23 have %arg0 - %arg3 as synonyms
833 %r28 - %r29 have %ret0 - %ret1 as synonyms
834 %r30 has %sp as a synonym
835 %r27 has %dp as a synonym
836 %r2 has %rp as a synonym
838 Almost every control register has a synonym; they are not listed
841 The table is sorted. Suitable for searching by a binary search. */
843 static const struct pd_reg pre_defined_registers
[] =
1055 /* This table is sorted by order of the length of the string. This is
1056 so we check for <> before we check for <. If we had a <> and checked
1057 for < first, we would get a false match. */
1058 static const struct fp_cond_map fp_cond_map
[] =
1094 static const struct selector_entry selector_table
[] =
1129 /* default space and subspace dictionaries */
1131 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1132 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1134 /* pre-defined subsegments (subspaces) for the HPPA. */
1135 #define SUBSEG_CODE 0
1136 #define SUBSEG_DATA 0
1137 #define SUBSEG_LIT 1
1138 #define SUBSEG_BSS 2
1139 #define SUBSEG_UNWIND 3
1140 #define SUBSEG_GDB_STRINGS 0
1141 #define SUBSEG_GDB_SYMBOLS 1
1143 static struct default_subspace_dict pa_def_subspaces
[] =
1145 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1146 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1147 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1148 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1150 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".hppa_unwind", SUBSEG_UNWIND
},
1152 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1155 static struct default_space_dict pa_def_spaces
[] =
1157 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1158 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1159 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1162 /* Misc local definitions used by the assembler. */
1164 /* Return nonzero if the string pointed to by S potentially represents
1165 a right or left half of a FP register */
1166 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1167 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1169 /* These macros are used to maintain spaces/subspaces. */
1170 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1171 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1172 #define SPACE_PRIVATE(space_chain) (space_chain)->sd_private
1173 #define SPACE_LOADABLE(space_chain) (space_chain)->sd_loadable
1174 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1175 #define SPACE_SORT(space_chain) (space_chain)->sd_sort_key
1176 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1177 #define SPACE_NAME_INDEX(space_chain) (space_chain)->sd_name_index
1179 #define SUBSPACE_SPACE_INDEX(ss_chain) (ss_chain)->ssd_space_index
1180 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1181 #define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_quadrant
1182 #define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_alignment
1183 #define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_access_control_bits
1184 #define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_sort_key
1185 #define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_common
1186 #define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
1187 #define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_dup_common
1188 #define SUBSPACE_CODE_ONLY(ss_chain) (ss_chain)->ssd_code_only
1189 #define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_loadable
1190 #define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_subspace_start
1191 #define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_subspace_length
1192 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1194 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1195 main loop after insertion. */
1197 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1199 ((OPCODE) |= (FIELD) << (START)); \
1203 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1204 IGNORE is used to suppress the error message. */
1206 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1208 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1211 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1217 #define is_DP_relative(exp) \
1218 ((exp).X_op == O_subtract \
1219 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1221 #define is_PC_relative(exp) \
1222 ((exp).X_op == O_subtract \
1223 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1225 #define is_complex(exp) \
1226 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1228 /* Actual functions to implement the PA specific code for the assembler. */
1230 /* Returns a pointer to the label_symbol_struct for the current space.
1231 or NULL if no label_symbol_struct exists for the current space. */
1233 static label_symbol_struct
*
1236 label_symbol_struct
*label_chain
;
1237 sd_chain_struct
*space_chain
= current_space
;
1239 for (label_chain
= label_symbols_rootp
;
1241 label_chain
= label_chain
->lss_next
)
1242 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1248 /* Defines a label for the current space. If one is already defined,
1249 this function will replace it with the new label. */
1252 pa_define_label (symbol
)
1255 label_symbol_struct
*label_chain
= pa_get_label ();
1256 sd_chain_struct
*space_chain
= current_space
;
1259 label_chain
->lss_label
= symbol
;
1262 /* Create a new label entry and add it to the head of the chain. */
1264 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1265 label_chain
->lss_label
= symbol
;
1266 label_chain
->lss_space
= space_chain
;
1267 label_chain
->lss_next
= NULL
;
1269 if (label_symbols_rootp
)
1270 label_chain
->lss_next
= label_symbols_rootp
;
1272 label_symbols_rootp
= label_chain
;
1276 /* Removes a label definition for the current space.
1277 If there is no label_symbol_struct entry, then no action is taken. */
1280 pa_undefine_label ()
1282 label_symbol_struct
*label_chain
;
1283 label_symbol_struct
*prev_label_chain
= NULL
;
1284 sd_chain_struct
*space_chain
= current_space
;
1286 for (label_chain
= label_symbols_rootp
;
1288 label_chain
= label_chain
->lss_next
)
1290 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1292 /* Remove the label from the chain and free its memory. */
1293 if (prev_label_chain
)
1294 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1296 label_symbols_rootp
= label_chain
->lss_next
;
1301 prev_label_chain
= label_chain
;
1306 /* An HPPA-specific version of fix_new. This is required because the HPPA
1307 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1308 results in the creation of an instance of an hppa_fix_struct. An
1309 hppa_fix_struct stores the extra information along with a pointer to the
1310 original fixS. This is attached to the original fixup via the
1311 tc_fix_data field. */
1314 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1315 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1319 symbolS
*add_symbol
;
1323 bfd_reloc_code_real_type r_type
;
1324 enum hppa_reloc_field_selector_type r_field
;
1331 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1332 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1335 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1337 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1338 new_fix
->tc_fix_data
= hppa_fix
;
1339 hppa_fix
->fx_r_type
= r_type
;
1340 hppa_fix
->fx_r_field
= r_field
;
1341 hppa_fix
->fx_r_format
= r_format
;
1342 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1345 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1347 /* If necessary call BFD backend function to attach the
1348 unwind bits to the target dependent parts of a BFD symbol.
1350 #ifdef obj_attach_unwind_info
1351 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1355 /* foo-$global$ is used to access non-automatic storage. $global$
1356 is really just a marker and has served its purpose, so eliminate
1357 it now so as not to confuse write.c. */
1358 if (!strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1359 new_fix
->fx_subsy
= NULL
;
1362 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1363 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1366 parse_cons_expression_hppa (exp
)
1369 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1373 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1374 hppa_field_selector is set by the parse_cons_expression_hppa. */
1377 cons_fix_new_hppa (frag
, where
, size
, exp
)
1383 unsigned int reloc_type
;
1385 if (is_DP_relative (*exp
))
1386 reloc_type
= R_HPPA_GOTOFF
;
1387 else if (is_complex (*exp
))
1388 reloc_type
= R_HPPA_COMPLEX
;
1390 reloc_type
= R_HPPA
;
1392 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1393 as_warn ("Invalid field selector. Assuming F%%.");
1395 fix_new_hppa (frag
, where
, size
,
1396 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, reloc_type
,
1397 hppa_field_selector
, 32, 0, (char *) 0);
1399 /* Reset field selector to its default state. */
1400 hppa_field_selector
= 0;
1403 /* This function is called once, at assembler startup time. It should
1404 set up all the tables, etc. that the MD part of the assembler will need. */
1409 const char *retval
= NULL
;
1413 last_call_info
= NULL
;
1414 call_info_root
= NULL
;
1416 /* Folding of text and data segments fails miserably on the PA.
1417 Warn user and disable "-R" option. */
1420 as_warn ("-R option not supported on this target.");
1421 flag_readonly_data_in_text
= 0;
1427 op_hash
= hash_new ();
1428 if (op_hash
== NULL
)
1429 as_fatal ("Virtual memory exhausted");
1431 while (i
< NUMOPCODES
)
1433 const char *name
= pa_opcodes
[i
].name
;
1434 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1435 if (retval
!= NULL
&& *retval
!= '\0')
1437 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1442 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1443 != pa_opcodes
[i
].match
)
1445 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1446 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1451 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1455 as_fatal ("Broken assembler. No assembly attempted.");
1457 /* SOM will change text_section. To make sure we never put
1458 anything into the old one switch to the new one now. */
1459 subseg_set (text_section
, 0);
1462 /* Called at the end of assembling a source file. Nothing to do
1463 at this point on the PA. */
1471 /* Assemble a single instruction storing it into a frag. */
1478 /* The had better be something to assemble. */
1481 /* Assemble the instruction. Results are saved into "the_insn". */
1484 /* Get somewhere to put the assembled instrution. */
1487 /* Output the opcode. */
1488 md_number_to_chars (to
, the_insn
.opcode
, 4);
1490 /* If necessary output more stuff. */
1491 if (the_insn
.reloc
!= R_HPPA_NONE
)
1492 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1493 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1494 the_insn
.reloc
, the_insn
.field_selector
,
1495 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1499 /* Do the real work for assembling a single instruction. Store results
1500 into the global "the_insn" variable.
1502 FIXME: Should define and use some functions/macros to handle
1503 various common insertions of information into the opcode. */
1509 char *error_message
= "";
1510 char *s
, c
, *argstart
, *name
, *save_s
;
1514 int cmpltr
, nullif
, flag
, cond
, num
;
1515 unsigned long opcode
;
1516 struct pa_opcode
*insn
;
1518 /* Skip to something interesting. */
1519 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1538 as_bad ("Unknown opcode: `%s'", str
);
1544 /* Convert everything into lower case. */
1547 if (isupper (*save_s
))
1548 *save_s
= tolower (*save_s
);
1552 /* Look up the opcode in the has table. */
1553 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1555 as_bad ("Unknown opcode: `%s'", str
);
1564 /* Mark the location where arguments for the instruction start, then
1565 start processing them. */
1569 /* Do some initialization. */
1570 opcode
= insn
->match
;
1571 bzero (&the_insn
, sizeof (the_insn
));
1573 the_insn
.reloc
= R_HPPA_NONE
;
1575 /* Build the opcode, checking as we go to make
1576 sure that the operands match. */
1577 for (args
= insn
->args
;; ++args
)
1582 /* End of arguments. */
1598 /* These must match exactly. */
1607 /* Handle a 5 bit register or control register field at 10. */
1610 num
= pa_parse_number (&s
, 0);
1611 CHECK_FIELD (num
, 31, 0, 0);
1612 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1614 /* Handle a 5 bit register field at 15. */
1616 num
= pa_parse_number (&s
, 0);
1617 CHECK_FIELD (num
, 31, 0, 0);
1618 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1620 /* Handle a 5 bit register field at 31. */
1623 num
= pa_parse_number (&s
, 0);
1624 CHECK_FIELD (num
, 31, 0, 0);
1625 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1627 /* Handle a 5 bit field length at 31. */
1629 num
= pa_get_absolute_expression (&the_insn
, &s
);
1631 CHECK_FIELD (num
, 32, 1, 0);
1632 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1634 /* Handle a 5 bit immediate at 15. */
1636 num
= pa_get_absolute_expression (&the_insn
, &s
);
1638 CHECK_FIELD (num
, 15, -16, 0);
1639 low_sign_unext (num
, 5, &num
);
1640 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1642 /* Handle a 5 bit immediate at 31. */
1644 num
= pa_get_absolute_expression (&the_insn
, &s
);
1646 CHECK_FIELD (num
, 15, -16, 0)
1647 low_sign_unext (num
, 5, &num
);
1648 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1650 /* Handle an unsigned 5 bit immediate at 31. */
1652 num
= pa_get_absolute_expression (&the_insn
, &s
);
1654 CHECK_FIELD (num
, 31, 0, 0);
1655 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1657 /* Handle an unsigned 5 bit immediate at 15. */
1659 num
= pa_get_absolute_expression (&the_insn
, &s
);
1661 CHECK_FIELD (num
, 31, 0, 0);
1662 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1664 /* Handle a 2 bit space identifier at 17. */
1666 num
= pa_parse_number (&s
, 0);
1667 CHECK_FIELD (num
, 3, 0, 1);
1668 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1670 /* Handle a 3 bit space identifier at 18. */
1672 num
= pa_parse_number (&s
, 0);
1673 CHECK_FIELD (num
, 7, 0, 1);
1674 dis_assemble_3 (num
, &num
);
1675 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1677 /* Handle a completer for an indexing load or store. */
1683 while (*s
== ',' && i
< 2)
1686 if (strncasecmp (s
, "sm", 2) == 0)
1693 else if (strncasecmp (s
, "m", 1) == 0)
1695 else if (strncasecmp (s
, "s", 1) == 0)
1698 as_bad ("Invalid Indexed Load Completer.");
1703 as_bad ("Invalid Indexed Load Completer Syntax.");
1705 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1708 /* Handle a short load/store completer. */
1716 if (strncasecmp (s
, "ma", 2) == 0)
1721 else if (strncasecmp (s
, "mb", 2) == 0)
1727 as_bad ("Invalid Short Load/Store Completer.");
1731 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1734 /* Handle a stbys completer. */
1740 while (*s
== ',' && i
< 2)
1743 if (strncasecmp (s
, "m", 1) == 0)
1745 else if (strncasecmp (s
, "b", 1) == 0)
1747 else if (strncasecmp (s
, "e", 1) == 0)
1750 as_bad ("Invalid Store Bytes Short Completer");
1755 as_bad ("Invalid Store Bytes Short Completer");
1757 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1760 /* Handle a non-negated compare/stubtract condition. */
1762 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1765 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1768 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1770 /* Handle a negated or non-negated compare/subtract condition. */
1773 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1777 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1780 as_bad ("Invalid Compare/Subtract Condition.");
1785 /* Negated condition requires an opcode change. */
1789 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1791 /* Handle a negated or non-negated add condition. */
1794 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1798 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1801 as_bad ("Invalid Compare/Subtract Condition");
1806 /* Negated condition requires an opcode change. */
1810 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1812 /* Handle a compare/subtract condition. */
1819 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1824 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1827 as_bad ("Invalid Compare/Subtract Condition");
1831 opcode
|= cmpltr
<< 13;
1832 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1834 /* Handle a non-negated add condition. */
1843 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1847 if (strcmp (name
, "=") == 0)
1849 else if (strcmp (name
, "<") == 0)
1851 else if (strcmp (name
, "<=") == 0)
1853 else if (strcasecmp (name
, "nuv") == 0)
1855 else if (strcasecmp (name
, "znv") == 0)
1857 else if (strcasecmp (name
, "sv") == 0)
1859 else if (strcasecmp (name
, "od") == 0)
1861 else if (strcasecmp (name
, "n") == 0)
1863 else if (strcasecmp (name
, "tr") == 0)
1868 else if (strcasecmp (name
, "<>") == 0)
1873 else if (strcasecmp (name
, ">=") == 0)
1878 else if (strcasecmp (name
, ">") == 0)
1883 else if (strcasecmp (name
, "uv") == 0)
1888 else if (strcasecmp (name
, "vnz") == 0)
1893 else if (strcasecmp (name
, "nsv") == 0)
1898 else if (strcasecmp (name
, "ev") == 0)
1904 as_bad ("Invalid Add Condition: %s", name
);
1907 nullif
= pa_parse_nullif (&s
);
1908 opcode
|= nullif
<< 1;
1909 opcode
|= cmpltr
<< 13;
1910 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1912 /* HANDLE a logical instruction condition. */
1920 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1924 if (strcmp (name
, "=") == 0)
1926 else if (strcmp (name
, "<") == 0)
1928 else if (strcmp (name
, "<=") == 0)
1930 else if (strcasecmp (name
, "od") == 0)
1932 else if (strcasecmp (name
, "tr") == 0)
1937 else if (strcmp (name
, "<>") == 0)
1942 else if (strcmp (name
, ">=") == 0)
1947 else if (strcmp (name
, ">") == 0)
1952 else if (strcasecmp (name
, "ev") == 0)
1958 as_bad ("Invalid Logical Instruction Condition.");
1961 opcode
|= cmpltr
<< 13;
1962 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1964 /* Handle a unit instruction condition. */
1971 if (strncasecmp (s
, "sbz", 3) == 0)
1976 else if (strncasecmp (s
, "shz", 3) == 0)
1981 else if (strncasecmp (s
, "sdc", 3) == 0)
1986 else if (strncasecmp (s
, "sbc", 3) == 0)
1991 else if (strncasecmp (s
, "shc", 3) == 0)
1996 else if (strncasecmp (s
, "tr", 2) == 0)
2002 else if (strncasecmp (s
, "nbz", 3) == 0)
2008 else if (strncasecmp (s
, "nhz", 3) == 0)
2014 else if (strncasecmp (s
, "ndc", 3) == 0)
2020 else if (strncasecmp (s
, "nbc", 3) == 0)
2026 else if (strncasecmp (s
, "nhc", 3) == 0)
2033 as_bad ("Invalid Logical Instruction Condition.");
2035 opcode
|= cmpltr
<< 13;
2036 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
2038 /* Handle a shift/extract/deposit condition. */
2046 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
2050 if (strcmp (name
, "=") == 0)
2052 else if (strcmp (name
, "<") == 0)
2054 else if (strcasecmp (name
, "od") == 0)
2056 else if (strcasecmp (name
, "tr") == 0)
2058 else if (strcmp (name
, "<>") == 0)
2060 else if (strcmp (name
, ">=") == 0)
2062 else if (strcasecmp (name
, "ev") == 0)
2064 /* Handle movb,n. Put things back the way they were.
2065 This includes moving s back to where it started. */
2066 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
2073 as_bad ("Invalid Shift/Extract/Deposit Condition.");
2076 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2078 /* Handle bvb and bb conditions. */
2084 if (strncmp (s
, "<", 1) == 0)
2089 else if (strncmp (s
, ">=", 2) == 0)
2095 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2097 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2099 /* Handle a system control completer. */
2101 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2109 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2111 /* Handle a nullification completer for branch instructions. */
2113 nullif
= pa_parse_nullif (&s
);
2114 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2116 /* Handle a 11 bit immediate at 31. */
2118 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2121 if (the_insn
.exp
.X_op
== O_constant
)
2123 num
= evaluate_absolute (&the_insn
);
2124 CHECK_FIELD (num
, 1023, -1024, 0);
2125 low_sign_unext (num
, 11, &num
);
2126 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2130 if (is_DP_relative (the_insn
.exp
))
2131 the_insn
.reloc
= R_HPPA_GOTOFF
;
2132 else if (is_PC_relative (the_insn
.exp
))
2133 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2134 else if (is_complex (the_insn
.exp
))
2135 the_insn
.reloc
= R_HPPA_COMPLEX
;
2137 the_insn
.reloc
= R_HPPA
;
2138 the_insn
.format
= 11;
2142 /* Handle a 14 bit immediate at 31. */
2144 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2147 if (the_insn
.exp
.X_op
== O_constant
)
2149 num
= evaluate_absolute (&the_insn
);
2150 CHECK_FIELD (num
, 8191, -8192, 0);
2151 low_sign_unext (num
, 14, &num
);
2152 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2156 if (is_DP_relative (the_insn
.exp
))
2157 the_insn
.reloc
= R_HPPA_GOTOFF
;
2158 else if (is_PC_relative (the_insn
.exp
))
2159 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2160 else if (is_complex (the_insn
.exp
))
2161 the_insn
.reloc
= R_HPPA_COMPLEX
;
2163 the_insn
.reloc
= R_HPPA
;
2164 the_insn
.format
= 14;
2168 /* Handle a 21 bit immediate at 31. */
2170 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2173 if (the_insn
.exp
.X_op
== O_constant
)
2175 num
= evaluate_absolute (&the_insn
);
2176 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2177 dis_assemble_21 (num
, &num
);
2178 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2182 if (is_DP_relative (the_insn
.exp
))
2183 the_insn
.reloc
= R_HPPA_GOTOFF
;
2184 else if (is_PC_relative (the_insn
.exp
))
2185 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2186 else if (is_complex (the_insn
.exp
))
2187 the_insn
.reloc
= R_HPPA_COMPLEX
;
2189 the_insn
.reloc
= R_HPPA
;
2190 the_insn
.format
= 21;
2194 /* Handle a 12 bit branch displacement. */
2196 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2200 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2202 unsigned int w1
, w
, result
;
2204 num
= evaluate_absolute (&the_insn
);
2207 as_bad ("Branch to unaligned address");
2210 CHECK_FIELD (num
, 8191, -8192, 0);
2211 sign_unext ((num
- 8) >> 2, 12, &result
);
2212 dis_assemble_12 (result
, &w1
, &w
);
2213 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2217 if (is_complex (the_insn
.exp
))
2218 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2220 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2221 the_insn
.format
= 12;
2222 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2223 bzero (&last_call_desc
, sizeof (struct call_desc
));
2228 /* Handle a 17 bit branch displacement. */
2230 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2234 if (!the_insn
.exp
.X_add_symbol
2235 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2238 unsigned int w2
, w1
, w
, result
;
2240 num
= evaluate_absolute (&the_insn
);
2243 as_bad ("Branch to unaligned address");
2246 CHECK_FIELD (num
, 262143, -262144, 0);
2248 if (the_insn
.exp
.X_add_symbol
)
2251 sign_unext (num
>> 2, 17, &result
);
2252 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2253 INSERT_FIELD_AND_CONTINUE (opcode
,
2254 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2258 if (is_complex (the_insn
.exp
))
2259 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2261 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2262 the_insn
.format
= 17;
2263 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2264 bzero (&last_call_desc
, sizeof (struct call_desc
));
2268 /* Handle an absolute 17 bit branch target. */
2270 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2274 if (!the_insn
.exp
.X_add_symbol
2275 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2278 unsigned int w2
, w1
, w
, result
;
2280 num
= evaluate_absolute (&the_insn
);
2283 as_bad ("Branch to unaligned address");
2286 CHECK_FIELD (num
, 262143, -262144, 0);
2288 if (the_insn
.exp
.X_add_symbol
)
2291 sign_unext (num
>> 2, 17, &result
);
2292 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2293 INSERT_FIELD_AND_CONTINUE (opcode
,
2294 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2298 if (is_complex (the_insn
.exp
))
2299 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2301 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2302 the_insn
.format
= 17;
2306 /* Handle a 5 bit shift count at 26. */
2308 num
= pa_get_absolute_expression (&the_insn
, &s
);
2310 CHECK_FIELD (num
, 31, 0, 0);
2311 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2313 /* Handle a 5 bit bit position at 26. */
2315 num
= pa_get_absolute_expression (&the_insn
, &s
);
2317 CHECK_FIELD (num
, 31, 0, 0);
2318 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2320 /* Handle a 5 bit immediate at 10. */
2322 num
= pa_get_absolute_expression (&the_insn
, &s
);
2324 CHECK_FIELD (num
, 31, 0, 0);
2325 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2327 /* Handle a 13 bit immediate at 18. */
2329 num
= pa_get_absolute_expression (&the_insn
, &s
);
2331 CHECK_FIELD (num
, 4095, -4096, 0);
2332 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2334 /* Handle a 26 bit immediate at 31. */
2336 num
= pa_get_absolute_expression (&the_insn
, &s
);
2338 CHECK_FIELD (num
, 671108864, 0, 0);
2339 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2341 /* Handle a 3 bit SFU identifier at 25. */
2343 num
= pa_get_absolute_expression (&the_insn
, &s
);
2345 CHECK_FIELD (num
, 7, 0, 0);
2346 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2348 /* We don't support any of these. FIXME. */
2355 /* Handle a source FP operand format completer. */
2357 flag
= pa_parse_fp_format (&s
);
2358 the_insn
.fpof1
= flag
;
2359 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2361 /* Handle a destination FP operand format completer. */
2363 /* pa_parse_format needs the ',' prefix. */
2365 flag
= pa_parse_fp_format (&s
);
2366 the_insn
.fpof2
= flag
;
2367 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2369 /* Handle FP compare conditions. */
2371 cond
= pa_parse_fp_cmp_cond (&s
);
2372 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2374 /* Handle L/R register halves like 't'. */
2377 struct pa_89_fp_reg_struct result
;
2379 pa_parse_number (&s
, &result
);
2380 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2381 opcode
|= result
.number_part
;
2383 /* 0x30 opcodes are FP arithmetic operation opcodes
2384 and need to be turned into 0x38 opcodes. This
2385 is not necessary for loads/stores. */
2386 if (need_89_opcode (&the_insn
, &result
)
2387 && ((opcode
& 0xfc000000) == 0x30000000))
2390 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2393 /* Handle L/R register halves like 'b'. */
2396 struct pa_89_fp_reg_struct result
;
2398 pa_parse_number (&s
, &result
);
2399 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2400 opcode
|= result
.number_part
<< 21;
2401 if (need_89_opcode (&the_insn
, &result
))
2403 opcode
|= (result
.l_r_select
& 1) << 7;
2409 /* Handle L/R register halves like 'x'. */
2412 struct pa_89_fp_reg_struct result
;
2414 pa_parse_number (&s
, &result
);
2415 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2416 opcode
|= (result
.number_part
& 0x1f) << 16;
2417 if (need_89_opcode (&the_insn
, &result
))
2419 opcode
|= (result
.l_r_select
& 1) << 12;
2425 /* Handle a 5 bit register field at 10. */
2428 struct pa_89_fp_reg_struct result
;
2430 pa_parse_number (&s
, &result
);
2431 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2432 if (the_insn
.fpof1
== SGL
)
2434 result
.number_part
&= 0xF;
2435 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2437 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2440 /* Handle a 5 bit register field at 15. */
2443 struct pa_89_fp_reg_struct result
;
2445 pa_parse_number (&s
, &result
);
2446 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2447 if (the_insn
.fpof1
== SGL
)
2449 result
.number_part
&= 0xF;
2450 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2452 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2455 /* Handle a 5 bit register field at 31. */
2458 struct pa_89_fp_reg_struct result
;
2460 pa_parse_number (&s
, &result
);
2461 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2462 if (the_insn
.fpof1
== SGL
)
2464 result
.number_part
&= 0xF;
2465 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2467 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2470 /* Handle a 5 bit register field at 20. */
2473 struct pa_89_fp_reg_struct result
;
2475 pa_parse_number (&s
, &result
);
2476 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2477 if (the_insn
.fpof1
== SGL
)
2479 result
.number_part
&= 0xF;
2480 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2482 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2485 /* Handle a 5 bit register field at 25. */
2488 struct pa_89_fp_reg_struct result
;
2490 pa_parse_number (&s
, &result
);
2491 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2492 if (the_insn
.fpof1
== SGL
)
2494 result
.number_part
&= 0xF;
2495 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2497 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2500 /* Handle a floating point operand format at 26.
2501 Only allows single and double precision. */
2503 flag
= pa_parse_fp_format (&s
);
2509 the_insn
.fpof1
= flag
;
2515 as_bad ("Invalid Floating Point Operand Format.");
2525 /* Check if the args matched. */
2528 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2529 && !strcmp (insn
->name
, insn
[1].name
))
2537 as_bad ("Invalid operands %s", error_message
);
2544 the_insn
.opcode
= opcode
;
2548 /* Turn a string in input_line_pointer into a floating point constant of type
2549 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2550 emitted is stored in *sizeP . An error message or NULL is returned. */
2552 #define MAX_LITTLENUMS 6
2555 md_atof (type
, litP
, sizeP
)
2561 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2562 LITTLENUM_TYPE
*wordP
;
2594 return "Bad call to MD_ATOF()";
2596 t
= atof_ieee (input_line_pointer
, type
, words
);
2598 input_line_pointer
= t
;
2599 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2600 for (wordP
= words
; prec
--;)
2602 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2603 litP
+= sizeof (LITTLENUM_TYPE
);
2608 /* Write out big-endian. */
2611 md_number_to_chars (buf
, val
, n
)
2633 /* Translate internal representation of relocation info to BFD target
2637 tc_gen_reloc (section
, fixp
)
2642 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2643 bfd_reloc_code_real_type code
;
2644 static int unwind_reloc_fixp_cnt
= 0;
2645 static arelent
*unwind_reloc_entryP
= NULL
;
2646 static arelent
*no_relocs
= NULL
;
2648 bfd_reloc_code_real_type
**codes
;
2652 if (fixp
->fx_addsy
== 0)
2654 assert (hppa_fixp
!= 0);
2655 assert (section
!= 0);
2658 /* Yuk. I would really like to push all this ELF specific unwind
2659 crud into BFD and the linker. That's how SOM does it -- and
2660 if we could make ELF emulate that then we could share more code
2661 in GAS (and potentially a gnu-linker later).
2663 Unwind section relocations are handled in a special way.
2664 The relocations for the .unwind section are originally
2665 built in the usual way. That is, for each unwind table
2666 entry there are two relocations: one for the beginning of
2667 the function and one for the end.
2669 The first time we enter this function we create a
2670 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2671 of the relocation is initialized to 0. Each additional
2672 pair of times this function is called for the unwind
2673 section represents an additional unwind table entry. Thus,
2674 the addend of the relocation should end up to be the number
2675 of unwind table entries. */
2676 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2678 if (unwind_reloc_entryP
== NULL
)
2680 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2682 assert (reloc
!= 0);
2683 unwind_reloc_entryP
= reloc
;
2684 unwind_reloc_fixp_cnt
++;
2685 unwind_reloc_entryP
->address
2686 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2687 /* A pointer to any function will do. We only
2688 need one to tell us what section the unwind
2689 relocations are for. */
2690 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2691 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2692 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2693 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2694 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2695 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2696 sizeof (arelent
*) * 2);
2697 assert (relocs
!= 0);
2698 relocs
[0] = unwind_reloc_entryP
;
2702 unwind_reloc_fixp_cnt
++;
2703 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2709 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2710 assert (reloc
!= 0);
2712 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2713 codes
= hppa_gen_reloc_type (stdoutput
,
2715 hppa_fixp
->fx_r_format
,
2716 hppa_fixp
->fx_r_field
);
2718 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2721 relocs
= (arelent
**)
2722 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2723 assert (relocs
!= 0);
2725 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2726 sizeof (arelent
) * n_relocs
);
2728 assert (reloc
!= 0);
2730 for (i
= 0; i
< n_relocs
; i
++)
2731 relocs
[i
] = &reloc
[i
];
2733 relocs
[n_relocs
] = NULL
;
2736 switch (fixp
->fx_r_type
)
2738 case R_HPPA_COMPLEX
:
2739 case R_HPPA_COMPLEX_PCREL_CALL
:
2740 case R_HPPA_COMPLEX_ABS_CALL
:
2741 assert (n_relocs
== 5);
2743 for (i
= 0; i
< n_relocs
; i
++)
2745 reloc
[i
].sym_ptr_ptr
= NULL
;
2746 reloc
[i
].address
= 0;
2747 reloc
[i
].addend
= 0;
2748 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2749 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2752 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2753 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2754 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2756 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2757 reloc
[3].addend
= fixp
->fx_addnumber
;
2758 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2759 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2760 reloc
[1].addend
= fixp
->fx_addnumber
;
2765 assert (n_relocs
== 1);
2769 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2770 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2771 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2772 reloc
->addend
= 0; /* default */
2774 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2776 /* Now, do any processing that is dependent on the relocation type. */
2779 case R_HPPA_PLABEL_32
:
2780 case R_HPPA_PLABEL_11
:
2781 case R_HPPA_PLABEL_14
:
2782 case R_HPPA_PLABEL_L21
:
2783 case R_HPPA_PLABEL_R11
:
2784 case R_HPPA_PLABEL_R14
:
2785 /* For plabel relocations, the addend of the
2786 relocation should be either 0 (no static link) or 2
2787 (static link required).
2789 FIXME: assume that fx_addnumber contains this
2791 reloc
->addend
= fixp
->fx_addnumber
;
2794 case R_HPPA_ABS_CALL_11
:
2795 case R_HPPA_ABS_CALL_14
:
2796 case R_HPPA_ABS_CALL_17
:
2797 case R_HPPA_ABS_CALL_L21
:
2798 case R_HPPA_ABS_CALL_R11
:
2799 case R_HPPA_ABS_CALL_R14
:
2800 case R_HPPA_ABS_CALL_R17
:
2801 case R_HPPA_ABS_CALL_LS21
:
2802 case R_HPPA_ABS_CALL_RS11
:
2803 case R_HPPA_ABS_CALL_RS14
:
2804 case R_HPPA_ABS_CALL_RS17
:
2805 case R_HPPA_ABS_CALL_LD21
:
2806 case R_HPPA_ABS_CALL_RD11
:
2807 case R_HPPA_ABS_CALL_RD14
:
2808 case R_HPPA_ABS_CALL_RD17
:
2809 case R_HPPA_ABS_CALL_LR21
:
2810 case R_HPPA_ABS_CALL_RR14
:
2811 case R_HPPA_ABS_CALL_RR17
:
2813 case R_HPPA_PCREL_CALL_11
:
2814 case R_HPPA_PCREL_CALL_14
:
2815 case R_HPPA_PCREL_CALL_17
:
2816 case R_HPPA_PCREL_CALL_L21
:
2817 case R_HPPA_PCREL_CALL_R11
:
2818 case R_HPPA_PCREL_CALL_R14
:
2819 case R_HPPA_PCREL_CALL_R17
:
2820 case R_HPPA_PCREL_CALL_LS21
:
2821 case R_HPPA_PCREL_CALL_RS11
:
2822 case R_HPPA_PCREL_CALL_RS14
:
2823 case R_HPPA_PCREL_CALL_RS17
:
2824 case R_HPPA_PCREL_CALL_LD21
:
2825 case R_HPPA_PCREL_CALL_RD11
:
2826 case R_HPPA_PCREL_CALL_RD14
:
2827 case R_HPPA_PCREL_CALL_RD17
:
2828 case R_HPPA_PCREL_CALL_LR21
:
2829 case R_HPPA_PCREL_CALL_RR14
:
2830 case R_HPPA_PCREL_CALL_RR17
:
2831 /* The constant is stored in the instruction. */
2832 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2835 reloc
->addend
= fixp
->fx_addnumber
;
2842 /* Preliminary relocation handling for SOM. Needs to handle
2843 COMPLEX relocations (yes, I've seen them occur) and it will
2844 need to handle R_ENTRY/R_EXIT relocations in the very near future
2845 (for generating unwinds). */
2846 switch (fixp
->fx_r_type
)
2848 case R_HPPA_COMPLEX
:
2849 case R_HPPA_COMPLEX_PCREL_CALL
:
2850 case R_HPPA_COMPLEX_ABS_CALL
:
2854 assert (n_relocs
== 1);
2858 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2859 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2860 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2866 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2871 /* For plabel relocations, the addend of the
2872 relocation should be either 0 (no static link) or 2
2873 (static link required).
2875 FIXME: We always assume no static link! */
2880 reloc
->addend
= fixp
->fx_addnumber
;
2890 /* Process any machine dependent frag types. */
2893 md_convert_frag (abfd
, sec
, fragP
)
2895 register asection
*sec
;
2896 register fragS
*fragP
;
2898 unsigned int address
;
2900 if (fragP
->fr_type
== rs_machine_dependent
)
2902 switch ((int) fragP
->fr_subtype
)
2905 fragP
->fr_type
= rs_fill
;
2906 know (fragP
->fr_var
== 1);
2907 know (fragP
->fr_next
);
2908 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2909 if (address
% fragP
->fr_offset
)
2912 fragP
->fr_next
->fr_address
2917 fragP
->fr_offset
= 0;
2923 /* Round up a section size to the appropriate boundary. */
2926 md_section_align (segment
, size
)
2930 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2931 int align2
= (1 << align
) - 1;
2933 return (size
+ align2
) & ~align2
;
2937 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2939 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2941 addressT from_addr
, to_addr
;
2945 fprintf (stderr
, "pa_create_short_jmp\n");
2949 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2951 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2953 addressT from_addr
, to_addr
;
2957 fprintf (stderr
, "pa_create_long_jump\n");
2961 /* Return the approximate size of a frag before relaxation has occurred. */
2963 md_estimate_size_before_relax (fragP
, segment
)
2964 register fragS
*fragP
;
2971 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2977 /* Parse machine dependent options. There are none on the PA. */
2979 md_parse_option (argP
, cntP
, vecP
)
2987 /* We have no need to default values of symbols. */
2990 md_undefined_symbol (name
)
2996 /* Parse an operand that is machine-specific.
2997 We just return without modifying the expression as we have nothing
3001 md_operand (expressionP
)
3002 expressionS
*expressionP
;
3006 /* Helper function for md_apply_fix. Actually determine if the fix
3007 can be applied, and if so, apply it.
3009 If a fix is applied, then set fx_addsy to NULL which indicates
3010 the fix was applied and need not be emitted into the object file. */
3013 md_apply_fix_1 (fixP
, val
)
3017 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
3018 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
3019 long new_val
, result
;
3020 unsigned int w1
, w2
, w
;
3022 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3023 never be "applied". They must always be emitted. */
3025 if (fixP
->fx_r_type
== R_HPPA_ENTRY
3026 || fixP
->fx_r_type
== R_HPPA_EXIT
)
3030 /* There should have been an HPPA specific fixup associated
3031 with the GAS fixup. */
3034 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
3035 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
3037 if (fixP
->fx_r_type
== R_HPPA_NONE
)
3040 /* Remember this value for emit_reloc. FIXME, is this braindamage
3041 documented anywhere!?! */
3042 fixP
->fx_addnumber
= val
;
3044 /* Check if this is an undefined symbol. No relocation can
3045 possibly be performed in this case. */
3046 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
3048 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
3051 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
3052 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
3053 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
)
3054 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3060 /* Handle all opcodes with the 'j' operand type. */
3062 CHECK_FIELD (new_val
, 8191, -8192, 0);
3064 /* Mask off 14 bits to be changed. */
3065 bfd_put_32 (stdoutput
,
3066 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3068 low_sign_unext (new_val
, 14, &result
);
3071 /* Handle all opcodes with the 'k' operand type. */
3073 CHECK_FIELD (new_val
, 2097152, 0, 0);
3075 /* Mask off 21 bits to be changed. */
3076 bfd_put_32 (stdoutput
,
3077 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3079 dis_assemble_21 (new_val
, &result
);
3082 /* Handle all the opcodes with the 'i' operand type. */
3084 CHECK_FIELD (new_val
, 1023, -1023, 0);
3086 /* Mask off 11 bits to be changed. */
3087 bfd_put_32 (stdoutput
,
3088 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3090 low_sign_unext (new_val
, 11, &result
);
3093 /* Handle all the opcodes with the 'w' operand type. */
3095 CHECK_FIELD (new_val
, 8191, -8192, 0)
3097 /* Mask off 11 bits to be changed. */
3098 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3099 bfd_put_32 (stdoutput
,
3100 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3103 dis_assemble_12 (result
, &w1
, &w
);
3104 result
= ((w1
<< 2) | w
);
3105 fixP
->fx_addsy
= NULL
;
3108 #define stub_needed(CALLER, CALLEE) \
3109 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3111 /* Handle some of the opcodes with the 'W' operand type. */
3113 /* If a long-call stub or argument relocation stub is
3114 needed, then we can not apply this relocation, instead
3115 the linker must handle it. */
3116 if (new_val
> 262143 || new_val
< -262144
3117 || stub_needed (((obj_symbol_type
*)
3118 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3119 hppa_fixP
->fx_arg_reloc
))
3122 /* No stubs were needed, we can perform this relocation. */
3123 CHECK_FIELD (new_val
, 262143, -262144, 0);
3125 /* Mask off 17 bits to be changed. */
3126 bfd_put_32 (stdoutput
,
3127 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3129 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3130 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3131 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3132 fixP
->fx_addsy
= NULL
;
3140 /* These are ELF specific relocations. ELF unfortunately
3141 handles unwinds in a completely different manner. */
3142 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3143 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3144 result
= fixP
->fx_addnumber
;
3149 fixP
->fx_addnumber
= fixP
->fx_offset
;
3150 bfd_put_32 (stdoutput
, 0, buf
);
3159 as_bad ("Unknown relocation encountered in md_apply_fix.");
3163 /* Insert the relocation. */
3164 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3167 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3168 (unsigned int) fixP
, fixP
->fx_r_type
);
3171 /* Apply a fix into a frag's data (if possible). */
3174 md_apply_fix (fixP
, valp
)
3178 md_apply_fix_1 (fixP
, (long) *valp
);
3182 /* Exactly what point is a PC-relative offset relative TO?
3183 On the PA, they're relative to the address of the offset. */
3186 md_pcrel_from (fixP
)
3189 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3192 /* Return nonzero if the input line pointer is at the end of
3196 is_end_of_statement ()
3198 return ((*input_line_pointer
== '\n')
3199 || (*input_line_pointer
== ';')
3200 || (*input_line_pointer
== '!'));
3203 /* Read a number from S. The number might come in one of many forms,
3204 the most common will be a hex or decimal constant, but it could be
3205 a pre-defined register (Yuk!), or an absolute symbol.
3207 Return a number or -1 for failure.
3209 When parsing PA-89 FP register numbers RESULT will be
3210 the address of a structure to return information about
3211 L/R half of FP registers, store results there as appropriate.
3213 pa_parse_number can not handle negative constants and will fail
3214 horribly if it is passed such a constant. */
3217 pa_parse_number (s
, result
)
3219 struct pa_89_fp_reg_struct
*result
;
3228 /* Skip whitespace before the number. */
3229 while (*p
== ' ' || *p
== '\t')
3232 /* Store info in RESULT if requested by caller. */
3235 result
->number_part
= -1;
3236 result
->l_r_select
= -1;
3242 /* Looks like a number. */
3245 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3247 /* The number is specified in hex. */
3249 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3250 || ((*p
>= 'A') && (*p
<= 'F')))
3253 num
= num
* 16 + *p
- '0';
3254 else if (*p
>= 'a' && *p
<= 'f')
3255 num
= num
* 16 + *p
- 'a' + 10;
3257 num
= num
* 16 + *p
- 'A' + 10;
3263 /* The number is specified in decimal. */
3264 while (isdigit (*p
))
3266 num
= num
* 10 + *p
- '0';
3271 /* Store info in RESULT if requested by the caller. */
3274 result
->number_part
= num
;
3276 if (IS_R_SELECT (p
))
3278 result
->l_r_select
= 1;
3281 else if (IS_L_SELECT (p
))
3283 result
->l_r_select
= 0;
3287 result
->l_r_select
= 0;
3292 /* The number might be a predefined register. */
3297 /* Tege hack: Special case for general registers as the general
3298 code makes a binary search with case translation, and is VERY
3303 if (*p
== 'e' && *(p
+ 1) == 't'
3304 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3307 num
= *p
- '0' + 28;
3315 else if (!isdigit (*p
))
3318 as_bad ("Undefined register: '%s'.", name
);
3324 num
= num
* 10 + *p
++ - '0';
3325 while (isdigit (*p
));
3330 /* Do a normal register search. */
3331 while (is_part_of_name (c
))
3337 status
= reg_name_search (name
);
3343 as_bad ("Undefined register: '%s'.", name
);
3349 /* Store info in RESULT if requested by caller. */
3352 result
->number_part
= num
;
3353 if (IS_R_SELECT (p
- 1))
3354 result
->l_r_select
= 1;
3355 else if (IS_L_SELECT (p
- 1))
3356 result
->l_r_select
= 0;
3358 result
->l_r_select
= 0;
3363 /* And finally, it could be a symbol in the absolute section which
3364 is effectively a constant. */
3368 while (is_part_of_name (c
))
3374 if ((sym
= symbol_find (name
)) != NULL
)
3376 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3377 num
= S_GET_VALUE (sym
);
3381 as_bad ("Non-absolute symbol: '%s'.", name
);
3387 /* There is where we'd come for an undefined symbol
3388 or for an empty string. For an empty string we
3389 will return zero. That's a concession made for
3390 compatability with the braindamaged HP assemblers. */
3396 as_bad ("Undefined absolute constant: '%s'.", name
);
3402 /* Store info in RESULT if requested by caller. */
3405 result
->number_part
= num
;
3406 if (IS_R_SELECT (p
- 1))
3407 result
->l_r_select
= 1;
3408 else if (IS_L_SELECT (p
- 1))
3409 result
->l_r_select
= 0;
3411 result
->l_r_select
= 0;
3419 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3421 /* Given NAME, find the register number associated with that name, return
3422 the integer value associated with the given name or -1 on failure. */
3425 reg_name_search (name
)
3428 int middle
, low
, high
;
3431 high
= REG_NAME_CNT
- 1;
3435 middle
= (low
+ high
) / 2;
3436 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) < 0)
3441 while (!((strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0) ||
3444 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0)
3445 return (pre_defined_registers
[middle
].value
);
3451 /* Return nonzero if the given INSN and L/R information will require
3452 a new PA-89 opcode. */
3455 need_89_opcode (insn
, result
)
3457 struct pa_89_fp_reg_struct
*result
;
3459 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3465 /* Parse a condition for a fcmp instruction. Return the numerical
3466 code associated with the condition. */
3469 pa_parse_fp_cmp_cond (s
)
3476 for (i
= 0; i
< 32; i
++)
3478 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3479 strlen (fp_cond_map
[i
].string
)) == 0)
3481 cond
= fp_cond_map
[i
].cond
;
3482 *s
+= strlen (fp_cond_map
[i
].string
);
3483 while (**s
== ' ' || **s
== '\t')
3489 as_bad ("Invalid FP Compare Condition: %c", **s
);
3493 /* Parse an FP operand format completer returning the completer
3496 static fp_operand_format
3497 pa_parse_fp_format (s
)
3506 if (strncasecmp (*s
, "sgl", 3) == 0)
3511 else if (strncasecmp (*s
, "dbl", 3) == 0)
3516 else if (strncasecmp (*s
, "quad", 4) == 0)
3523 format
= ILLEGAL_FMT
;
3524 as_bad ("Invalid FP Operand Format: %3s", *s
);
3531 /* Convert from a selector string into a selector type. */
3534 pa_chk_field_selector (str
)
3538 const struct selector_entry
*tablep
;
3542 /* Read past any whitespace. */
3543 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3546 /* Yuk. Looks like a linear search through the table. With the
3547 frequence of some selectors it might make sense to sort the
3549 for (tablep
= selector_table
; tablep
->prefix
; tablep
++)
3551 if (strncasecmp (tablep
->prefix
, *str
, strlen (tablep
->prefix
)) == 0)
3553 *str
+= strlen (tablep
->prefix
);
3554 selector
= tablep
->field_selector
;
3561 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3564 get_expression (str
)
3570 save_in
= input_line_pointer
;
3571 input_line_pointer
= str
;
3572 seg
= expression (&the_insn
.exp
);
3573 if (!(seg
== absolute_section
3574 || seg
== undefined_section
3575 || SEG_NORMAL (seg
)))
3577 as_warn ("Bad segment in expression.");
3578 expr_end
= input_line_pointer
;
3579 input_line_pointer
= save_in
;
3582 expr_end
= input_line_pointer
;
3583 input_line_pointer
= save_in
;
3587 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3589 pa_get_absolute_expression (insn
, strp
)
3595 insn
->field_selector
= pa_chk_field_selector (strp
);
3596 save_in
= input_line_pointer
;
3597 input_line_pointer
= *strp
;
3598 expression (&insn
->exp
);
3599 if (insn
->exp
.X_op
!= O_constant
)
3601 as_bad ("Bad segment (should be absolute).");
3602 expr_end
= input_line_pointer
;
3603 input_line_pointer
= save_in
;
3606 expr_end
= input_line_pointer
;
3607 input_line_pointer
= save_in
;
3608 return evaluate_absolute (insn
);
3611 /* Evaluate an absolute expression EXP which may be modified by
3612 the selector FIELD_SELECTOR. Return the value of the expression. */
3614 evaluate_absolute (insn
)
3619 int field_selector
= insn
->field_selector
;
3622 value
= exp
.X_add_number
;
3624 switch (field_selector
)
3630 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3632 if (value
& 0x00000400)
3634 value
= (value
& 0xfffff800) >> 11;
3637 /* Sign extend from bit 21. */
3639 if (value
& 0x00000400)
3640 value
|= 0xfffff800;
3645 /* Arithmetic shift right 11 bits. */
3647 value
= (value
& 0xfffff800) >> 11;
3650 /* Set bits 0-20 to zero. */
3652 value
= value
& 0x7ff;
3655 /* Add 0x800 and arithmetic shift right 11 bits. */
3660 value
= (value
& 0xfffff800) >> 11;
3663 /* Set bitgs 0-21 to one. */
3665 value
|= 0xfffff800;
3668 /* This had better get fixed. It looks like we're quickly moving
3675 BAD_CASE (field_selector
);
3681 /* Given an argument location specification return the associated
3682 argument location number. */
3685 pa_build_arg_reloc (type_name
)
3689 if (strncasecmp (type_name
, "no", 2) == 0)
3691 if (strncasecmp (type_name
, "gr", 2) == 0)
3693 else if (strncasecmp (type_name
, "fr", 2) == 0)
3695 else if (strncasecmp (type_name
, "fu", 2) == 0)
3698 as_bad ("Invalid argument location: %s\n", type_name
);
3703 /* Encode and return an argument relocation specification for
3704 the given register in the location specified by arg_reloc. */
3707 pa_align_arg_reloc (reg
, arg_reloc
)
3709 unsigned int arg_reloc
;
3711 unsigned int new_reloc
;
3713 new_reloc
= arg_reloc
;
3729 as_bad ("Invalid argument description: %d", reg
);
3735 /* Parse a PA nullification completer (,n). Return nonzero if the
3736 completer was found; return zero if no completer was found. */
3748 if (strncasecmp (*s
, "n", 1) == 0)
3752 as_bad ("Invalid Nullification: (%c)", **s
);
3761 /* Parse a non-negated compare/subtract completer returning the
3762 number (for encoding in instrutions) of the given completer.
3764 ISBRANCH specifies whether or not this is parsing a condition
3765 completer for a branch (vs a nullification completer for a
3766 computational instruction. */
3769 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3774 char *name
= *s
+ 1;
3782 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3786 if (strcmp (name
, "=") == 0)
3790 else if (strcmp (name
, "<") == 0)
3794 else if (strcmp (name
, "<=") == 0)
3798 else if (strcmp (name
, "<<") == 0)
3802 else if (strcmp (name
, "<<=") == 0)
3806 else if (strcasecmp (name
, "sv") == 0)
3810 else if (strcasecmp (name
, "od") == 0)
3814 /* If we have something like addb,n then there is no condition
3816 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3827 /* Reset pointers if this was really a ,n for a branch instruction. */
3828 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3834 /* Parse a negated compare/subtract completer returning the
3835 number (for encoding in instrutions) of the given completer.
3837 ISBRANCH specifies whether or not this is parsing a condition
3838 completer for a branch (vs a nullification completer for a
3839 computational instruction. */
3842 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3847 char *name
= *s
+ 1;
3855 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3859 if (strcasecmp (name
, "tr") == 0)
3863 else if (strcmp (name
, "<>") == 0)
3867 else if (strcmp (name
, ">=") == 0)
3871 else if (strcmp (name
, ">") == 0)
3875 else if (strcmp (name
, ">>=") == 0)
3879 else if (strcmp (name
, ">>") == 0)
3883 else if (strcasecmp (name
, "nsv") == 0)
3887 else if (strcasecmp (name
, "ev") == 0)
3891 /* If we have something like addb,n then there is no condition
3893 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3904 /* Reset pointers if this was really a ,n for a branch instruction. */
3905 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3911 /* Parse a non-negated addition completer returning the number
3912 (for encoding in instrutions) of the given completer.
3914 ISBRANCH specifies whether or not this is parsing a condition
3915 completer for a branch (vs a nullification completer for a
3916 computational instruction. */
3919 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3924 char *name
= *s
+ 1;
3932 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3936 if (strcmp (name
, "=") == 0)
3940 else if (strcmp (name
, "<") == 0)
3944 else if (strcmp (name
, "<=") == 0)
3948 else if (strcasecmp (name
, "nuv") == 0)
3952 else if (strcasecmp (name
, "znv") == 0)
3956 else if (strcasecmp (name
, "sv") == 0)
3960 else if (strcasecmp (name
, "od") == 0)
3964 /* If we have something like addb,n then there is no condition
3966 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3977 /* Reset pointers if this was really a ,n for a branch instruction. */
3978 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3984 /* Parse a negated addition completer returning the number
3985 (for encoding in instrutions) of the given completer.
3987 ISBRANCH specifies whether or not this is parsing a condition
3988 completer for a branch (vs a nullification completer for a
3989 computational instruction. */
3992 pa_parse_neg_add_cmpltr (s
, isbranch
)
3997 char *name
= *s
+ 1;
4005 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
4009 if (strcasecmp (name
, "tr") == 0)
4013 else if (strcmp (name
, "<>") == 0)
4017 else if (strcmp (name
, ">=") == 0)
4021 else if (strcmp (name
, ">") == 0)
4025 else if (strcmp (name
, "uv") == 0)
4029 else if (strcmp (name
, "vnz") == 0)
4033 else if (strcasecmp (name
, "nsv") == 0)
4037 else if (strcasecmp (name
, "ev") == 0)
4041 /* If we have something like addb,n then there is no condition
4043 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4054 /* Reset pointers if this was really a ,n for a branch instruction. */
4055 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4061 /* Handle a .BLOCK type pseudo-op. */
4069 unsigned int temp_size
;
4072 temp_size
= get_absolute_expression ();
4074 /* Always fill with zeros, that's what the HP assembler does. */
4077 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4078 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4079 bzero (p
, temp_size
);
4081 /* Convert 2 bytes at a time. */
4083 for (i
= 0; i
< temp_size
; i
+= 2)
4085 md_number_to_chars (p
+ i
,
4087 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4090 pa_undefine_label ();
4091 demand_empty_rest_of_line ();
4095 /* Handle a .CALL pseudo-op. This involves storing away information
4096 about where arguments are to be found so the linker can detect
4097 (and correct) argument location mismatches between caller and callee. */
4103 pa_call_args (&last_call_desc
);
4104 demand_empty_rest_of_line ();
4108 /* Do the dirty work of building a call descriptor which describes
4109 where the caller placed arguments to a function call. */
4112 pa_call_args (call_desc
)
4113 struct call_desc
*call_desc
;
4116 unsigned int temp
, arg_reloc
;
4118 while (!is_end_of_statement ())
4120 name
= input_line_pointer
;
4121 c
= get_symbol_end ();
4122 /* Process a source argument. */
4123 if ((strncasecmp (name
, "argw", 4) == 0))
4125 temp
= atoi (name
+ 4);
4126 p
= input_line_pointer
;
4128 input_line_pointer
++;
4129 name
= input_line_pointer
;
4130 c
= get_symbol_end ();
4131 arg_reloc
= pa_build_arg_reloc (name
);
4132 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4134 /* Process a return value. */
4135 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4137 p
= input_line_pointer
;
4139 input_line_pointer
++;
4140 name
= input_line_pointer
;
4141 c
= get_symbol_end ();
4142 arg_reloc
= pa_build_arg_reloc (name
);
4143 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4147 as_bad ("Invalid .CALL argument: %s", name
);
4149 p
= input_line_pointer
;
4151 if (!is_end_of_statement ())
4152 input_line_pointer
++;
4156 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4159 is_same_frag (frag1
, frag2
)
4166 else if (frag2
== NULL
)
4168 else if (frag1
== frag2
)
4170 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4171 return (is_same_frag (frag1
, frag2
->fr_next
));
4177 /* Build an entry in the UNWIND subspace from the given function
4178 attributes in CALL_INFO. This is not needed for SOM as using
4179 R_ENTRY and R_EXIT relocations allow the linker to handle building
4180 of the unwind spaces. */
4183 pa_build_unwind_subspace (call_info
)
4184 struct call_info
*call_info
;
4187 asection
*seg
, *save_seg
;
4188 subsegT subseg
, save_subseg
;
4192 /* Get into the right seg/subseg. This may involve creating
4193 the seg the first time through. Make sure to have the
4194 old seg/subseg so that we can reset things when we are done. */
4195 subseg
= SUBSEG_UNWIND
;
4196 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4197 if (seg
== ASEC_NULL
)
4199 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4200 bfd_set_section_flags (stdoutput
, seg
,
4201 SEC_READONLY
| SEC_HAS_CONTENTS
4202 | SEC_LOAD
| SEC_RELOC
);
4206 save_subseg
= now_subseg
;
4207 subseg_set (seg
, subseg
);
4210 /* Get some space to hold relocation information for the unwind
4213 call_info
->start_offset_frag
= frag_now
;
4214 call_info
->start_frag_where
= p
- frag_now
->fr_literal
;
4216 /* Relocation info. for start offset of the function. */
4217 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4218 call_info
->start_symbol
, (offsetT
) 0,
4219 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4222 /* We need to search for the first relocation involving the start_symbol of
4223 this call_info descriptor. */
4227 call_info
->start_fix
= seg_info (now_seg
)->fix_root
;
4228 for (fixP
= call_info
->start_fix
; fixP
; fixP
= fixP
->fx_next
)
4230 if (fixP
->fx_addsy
== call_info
->start_symbol
4231 || fixP
->fx_subsy
== call_info
->start_symbol
)
4233 call_info
->start_fix
= fixP
;
4240 call_info
->end_offset_frag
= frag_now
;
4241 call_info
->end_frag_where
= p
- frag_now
->fr_literal
;
4243 /* Relocation info. for end offset of the function. */
4244 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4245 call_info
->end_symbol
, (offsetT
) 0,
4246 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4249 /* We need to search for the first relocation involving the end_symbol of
4250 this call_info descriptor. */
4254 call_info
->end_fix
= seg_info (now_seg
)->fix_root
; /* the default */
4255 for (fixP
= call_info
->end_fix
; fixP
; fixP
= fixP
->fx_next
)
4257 if (fixP
->fx_addsy
== call_info
->end_symbol
4258 || fixP
->fx_subsy
== call_info
->end_symbol
)
4260 call_info
->end_fix
= fixP
;
4267 unwind
= (char *) &call_info
->ci_unwind
;
4268 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4272 FRAG_APPEND_1_CHAR (c
);
4276 /* Return back to the original segment/subsegment. */
4277 subseg_set (save_seg
, save_subseg
);
4281 /* Process a .CALLINFO pseudo-op. This information is used later
4282 to build unwind descriptors and maybe one day to support
4283 .ENTER and .LEAVE. */
4286 pa_callinfo (unused
)
4292 /* .CALLINFO must appear within a procedure definition. */
4293 if (!within_procedure
)
4294 as_bad (".callinfo is not within a procedure definition");
4296 /* Mark the fact that we found the .CALLINFO for the
4297 current procedure. */
4298 callinfo_found
= TRUE
;
4300 /* Iterate over the .CALLINFO arguments. */
4301 while (!is_end_of_statement ())
4303 name
= input_line_pointer
;
4304 c
= get_symbol_end ();
4305 /* Frame size specification. */
4306 if ((strncasecmp (name
, "frame", 5) == 0))
4308 p
= input_line_pointer
;
4310 input_line_pointer
++;
4311 temp
= get_absolute_expression ();
4312 if ((temp
& 0x3) != 0)
4314 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4318 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4319 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4322 /* Entry register (GR, GR and SR) specifications. */
4323 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4325 p
= input_line_pointer
;
4327 input_line_pointer
++;
4328 temp
= get_absolute_expression ();
4329 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4330 even though %r19 is caller saved. I think this is a bug in
4331 the HP assembler, and we are not going to emulate it. */
4332 if (temp
< 3 || temp
> 18)
4333 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4334 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4336 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4338 p
= input_line_pointer
;
4340 input_line_pointer
++;
4341 temp
= get_absolute_expression ();
4342 /* Similarly the HP assembler takes 31 as the high bound even
4343 though %fr21 is the last callee saved floating point register. */
4344 if (temp
< 12 || temp
> 21)
4345 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4346 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4348 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4350 p
= input_line_pointer
;
4352 input_line_pointer
++;
4353 temp
= get_absolute_expression ();
4355 as_bad ("Value for ENTRY_SR must be 3\n");
4356 last_call_info
->entry_sr
= temp
- 2;
4358 /* Note whether or not this function performs any calls. */
4359 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4360 (strncasecmp (name
, "caller", 6) == 0))
4362 p
= input_line_pointer
;
4364 last_call_info
->makes_calls
= 1;
4366 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4368 p
= input_line_pointer
;
4370 last_call_info
->makes_calls
= 0;
4372 /* Should RP be saved into the stack. */
4373 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4375 p
= input_line_pointer
;
4377 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4379 /* Likewise for SP. */
4380 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4382 p
= input_line_pointer
;
4384 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4386 /* Is this an unwindable procedure. If so mark it so
4387 in the unwind descriptor. */
4388 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4390 p
= input_line_pointer
;
4392 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4394 /* Is this an interrupt routine. If so mark it in the
4395 unwind descriptor. */
4396 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4398 p
= input_line_pointer
;
4400 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4404 as_bad ("Invalid .CALLINFO argument: %s", name
);
4406 if (!is_end_of_statement ())
4407 input_line_pointer
++;
4410 demand_empty_rest_of_line ();
4414 /* Switch into the code subspace. */
4420 sd_chain_struct
*sdchain
;
4422 /* First time through it might be necessary to create the
4424 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4426 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4427 pa_def_spaces
[0].spnum
,
4428 pa_def_spaces
[0].loadable
,
4429 pa_def_spaces
[0].defined
,
4430 pa_def_spaces
[0].private,
4431 pa_def_spaces
[0].sort
,
4432 pa_def_spaces
[0].segment
, 0);
4435 SPACE_DEFINED (sdchain
) = 1;
4436 subseg_set (text_section
, SUBSEG_CODE
);
4437 demand_empty_rest_of_line ();
4441 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4442 the .comm pseudo-op has the following symtax:
4444 <label> .comm <length>
4446 where <label> is optional and is a symbol whose address will be the start of
4447 a block of memory <length> bytes long. <length> must be an absolute
4448 expression. <length> bytes will be allocated in the current space
4457 label_symbol_struct
*label_symbol
= pa_get_label ();
4460 symbol
= label_symbol
->lss_label
;
4465 size
= get_absolute_expression ();
4469 /* It is incorrect to check S_IS_DEFINED at this point as
4470 the symbol will *always* be defined. FIXME. How to
4471 correctly determine when this label really as been
4473 if (S_GET_VALUE (symbol
))
4475 if (S_GET_VALUE (symbol
) != size
)
4477 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4478 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4484 S_SET_VALUE (symbol
, size
);
4485 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4486 S_SET_EXTERNAL (symbol
);
4489 demand_empty_rest_of_line ();
4492 /* Process a .COPYRIGHT pseudo-op. */
4495 pa_copyright (unused
)
4502 if (*input_line_pointer
== '\"')
4504 ++input_line_pointer
;
4505 name
= input_line_pointer
;
4506 while ((c
= next_char_of_string ()) >= 0)
4508 c
= *input_line_pointer
;
4509 *input_line_pointer
= '\0';
4510 *(input_line_pointer
- 1) = '\0';
4512 /* FIXME. Not supported */
4515 *input_line_pointer
= c
;
4519 as_bad ("Expected \"-ed string");
4521 pa_undefine_label ();
4522 demand_empty_rest_of_line ();
4525 /* Process a .END pseudo-op. */
4531 demand_empty_rest_of_line ();
4535 /* Process a .ENTER pseudo-op. This is not supported. */
4544 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4550 if (!within_procedure
)
4551 as_bad ("Misplaced .entry. Ignored.");
4554 if (!callinfo_found
)
4555 as_bad ("Missing .callinfo.");
4557 last_call_info
->start_frag
= frag_now
;
4559 demand_empty_rest_of_line ();
4560 within_entry_exit
= TRUE
;
4562 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4563 It will not be on if no .EXPORT pseudo-op exists (static function). */
4564 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4567 /* SOM defers building of unwind descriptors until the link phase.
4568 The assembler is responsible for creating an R_ENTRY relocation
4569 to mark the beginning of a region and hold the unwind bits, and
4570 for creating an R_EXIT relocation to mark the end of the region.
4572 FIXME. ELF should be using the same conventions! The problem
4573 is an unwind requires too much relocation space. Hmmm. Maybe
4574 if we split the unwind bits up between the relocations which
4575 denote the entry and exit points. */
4577 char *where
= frag_more (0);
4579 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4580 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4581 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4582 (char *) &last_call_info
->ci_unwind
.descriptor
);
4589 /* Handle a .EQU pseudo-op. */
4595 label_symbol_struct
*label_symbol
= pa_get_label ();
4600 symbol
= label_symbol
->lss_label
;
4601 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4602 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4607 as_bad (".REG must use a label");
4609 as_bad (".EQU must use a label");
4612 pa_undefine_label ();
4613 demand_empty_rest_of_line ();
4617 /* Helper function. Does processing for the end of a function. This
4618 usually involves creating some relocations or building special
4619 symbols to mark the end of the function. */
4626 where
= frag_more (0);
4629 /* ELF does not have EXIT relocations. All we do is create a
4630 temporary symbol marking the end of the function. */
4632 char *name
= (char *) xmalloc (strlen ("L$\001end_") +
4633 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
4639 strcpy (name
, "L$\001end_");
4640 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
4642 symbolP
= symbol_find (name
);
4644 as_warn ("Symbol '%s' already defined.", name
);
4647 /* symbol value should be the offset of the
4648 last instruction of the function */
4649 symbolP
= symbol_new (name
, now_seg
,
4650 (valueT
) (obstack_next_free (&frags
)
4651 - frag_now
->fr_literal
- 4),
4655 symbolP
->bsym
->flags
= BSF_LOCAL
;
4656 symbol_table_insert (symbolP
);
4659 last_call_info
->end_symbol
= symbolP
;
4661 as_bad ("Symbol '%s' could not be created.", name
);
4665 as_bad ("No memory for symbol name.");
4668 /* Stuff away the location of the frag for the end of the function,
4669 and call pa_build_unwind_subspace to add an entry in the unwind
4671 last_call_info
->end_frag
= frag_now
;
4672 pa_build_unwind_subspace (last_call_info
);
4674 /* SOM defers building of unwind descriptors until the link phase.
4675 The assembler is responsible for creating an R_ENTRY relocation
4676 to mark the beginning of a region and hold the unwind bits, and
4677 for creating an R_EXIT relocation to mark the end of the region.
4679 FIXME. ELF should be using the same conventions! The problem
4680 is an unwind requires too much relocation space. Hmmm. Maybe
4681 if we split the unwind bits up between the relocations which
4682 denote the entry and exit points. */
4683 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4684 last_call_info
->start_symbol
, (offsetT
) 0,
4685 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4690 /* Process a .EXIT pseudo-op. */
4696 if (!within_procedure
)
4697 as_bad (".EXIT must appear within a procedure");
4700 if (!callinfo_found
)
4701 as_bad ("Missing .callinfo");
4704 if (!within_entry_exit
)
4705 as_bad ("No .ENTRY for this .EXIT");
4708 within_entry_exit
= FALSE
;
4713 demand_empty_rest_of_line ();
4717 /* Process a .EXPORT directive. This makes functions external
4718 and provides information such as argument relocation entries
4728 name
= input_line_pointer
;
4729 c
= get_symbol_end ();
4730 /* Make sure the given symbol exists. */
4731 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4733 as_bad ("Cannot define export symbol: %s\n", name
);
4734 p
= input_line_pointer
;
4736 input_line_pointer
++;
4740 /* OK. Set the external bits and process argument relocations. */
4741 S_SET_EXTERNAL (symbol
);
4742 p
= input_line_pointer
;
4744 if (!is_end_of_statement ())
4746 input_line_pointer
++;
4747 pa_type_args (symbol
, 1);
4749 pa_build_symextn_section ();
4754 demand_empty_rest_of_line ();
4758 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4761 pa_type_args (symbolP
, is_export
)
4766 unsigned int temp
, arg_reloc
;
4767 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4768 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4770 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4773 input_line_pointer
+= 8;
4774 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4775 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4776 type
= SYMBOL_TYPE_ABSOLUTE
;
4778 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4780 input_line_pointer
+= 4;
4781 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4782 instead one should be IMPORTing/EXPORTing ENTRY types.
4784 Complain if one tries to EXPORT a CODE type since that's never
4785 done. Both GCC and HP C still try to IMPORT CODE types, so
4786 silently fix them to be ENTRY types. */
4787 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4790 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4792 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4793 type
= SYMBOL_TYPE_ENTRY
;
4797 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4798 type
= SYMBOL_TYPE_CODE
;
4801 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4803 input_line_pointer
+= 4;
4804 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4805 type
= SYMBOL_TYPE_DATA
;
4807 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4809 input_line_pointer
+= 5;
4810 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4811 type
= SYMBOL_TYPE_ENTRY
;
4813 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4815 input_line_pointer
+= 9;
4816 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4817 type
= SYMBOL_TYPE_MILLICODE
;
4819 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4821 input_line_pointer
+= 6;
4822 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4823 type
= SYMBOL_TYPE_PLABEL
;
4825 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4827 input_line_pointer
+= 8;
4828 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4829 type
= SYMBOL_TYPE_PRI_PROG
;
4831 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4833 input_line_pointer
+= 8;
4834 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4835 type
= SYMBOL_TYPE_SEC_PROG
;
4838 /* SOM requires much more information about symbol types
4839 than BFD understands. This is how we get this information
4840 to the SOM BFD backend. */
4841 #ifdef obj_set_symbol_type
4842 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4845 /* Now that the type of the exported symbol has been handled,
4846 handle any argument relocation information. */
4847 while (!is_end_of_statement ())
4849 if (*input_line_pointer
== ',')
4850 input_line_pointer
++;
4851 name
= input_line_pointer
;
4852 c
= get_symbol_end ();
4853 /* Argument sources. */
4854 if ((strncasecmp (name
, "argw", 4) == 0))
4856 p
= input_line_pointer
;
4858 input_line_pointer
++;
4859 temp
= atoi (name
+ 4);
4860 name
= input_line_pointer
;
4861 c
= get_symbol_end ();
4862 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4863 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4864 *input_line_pointer
= c
;
4866 /* The return value. */
4867 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4869 p
= input_line_pointer
;
4871 input_line_pointer
++;
4872 name
= input_line_pointer
;
4873 c
= get_symbol_end ();
4874 arg_reloc
= pa_build_arg_reloc (name
);
4875 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4876 *input_line_pointer
= c
;
4878 /* Privelege level. */
4879 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4881 p
= input_line_pointer
;
4883 input_line_pointer
++;
4884 temp
= atoi (input_line_pointer
);
4885 c
= get_symbol_end ();
4886 *input_line_pointer
= c
;
4890 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4891 p
= input_line_pointer
;
4894 if (!is_end_of_statement ())
4895 input_line_pointer
++;
4899 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4900 assembly file must either be defined in the assembly file, or
4901 explicitly IMPORTED from another. */
4910 name
= input_line_pointer
;
4911 c
= get_symbol_end ();
4913 symbol
= symbol_find_or_make (name
);
4914 p
= input_line_pointer
;
4917 if (!is_end_of_statement ())
4919 input_line_pointer
++;
4920 pa_type_args (symbol
, 0);
4924 /* Sigh. To be compatable with the HP assembler and to help
4925 poorly written assembly code, we assign a type based on
4926 the the current segment. Note only BSF_FUNCTION really
4927 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4928 if (now_seg
== text_section
)
4929 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4931 /* If the section is undefined, then the symbol is undefined
4932 Since this is an import, leave the section undefined. */
4933 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4936 demand_empty_rest_of_line ();
4940 /* Handle a .LABEL pseudo-op. */
4948 name
= input_line_pointer
;
4949 c
= get_symbol_end ();
4951 if (strlen (name
) > 0)
4954 p
= input_line_pointer
;
4959 as_warn ("Missing label name on .LABEL");
4962 if (!is_end_of_statement ())
4964 as_warn ("extra .LABEL arguments ignored.");
4965 ignore_rest_of_line ();
4967 demand_empty_rest_of_line ();
4971 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4980 /* Handle a .ORIGIN pseudo-op. */
4987 pa_undefine_label ();
4991 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4992 is for static functions. FIXME. Should share more code with .EXPORT. */
5001 name
= input_line_pointer
;
5002 c
= get_symbol_end ();
5004 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
5006 as_bad ("Cannot define static symbol: %s\n", name
);
5007 p
= input_line_pointer
;
5009 input_line_pointer
++;
5013 S_CLEAR_EXTERNAL (symbol
);
5014 p
= input_line_pointer
;
5016 if (!is_end_of_statement ())
5018 input_line_pointer
++;
5019 pa_type_args (symbol
, 0);
5023 demand_empty_rest_of_line ();
5027 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5028 of a procedure from a syntatical point of view. */
5034 struct call_info
*call_info
;
5036 if (within_procedure
)
5037 as_fatal ("Nested procedures");
5039 /* Reset global variables for new procedure. */
5040 callinfo_found
= FALSE
;
5041 within_procedure
= TRUE
;
5043 /* Create another call_info structure. */
5044 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
5047 as_fatal ("Cannot allocate unwind descriptor\n");
5049 bzero (call_info
, sizeof (struct call_info
));
5051 call_info
->ci_next
= NULL
;
5053 if (call_info_root
== NULL
)
5055 call_info_root
= call_info
;
5056 last_call_info
= call_info
;
5060 last_call_info
->ci_next
= call_info
;
5061 last_call_info
= call_info
;
5064 /* set up defaults on call_info structure */
5066 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5067 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5068 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5069 call_info
->entry_sr
= ~0;
5070 call_info
->makes_calls
= 1;
5072 /* If we got a .PROC pseudo-op, we know that the function is defined
5073 locally. Make sure it gets into the symbol table. */
5075 label_symbol_struct
*label_symbol
= pa_get_label ();
5079 if (label_symbol
->lss_label
)
5081 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5082 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5085 as_bad ("Missing function name for .PROC (corrupted label)");
5088 as_bad ("Missing function name for .PROC");
5091 demand_empty_rest_of_line ();
5095 /* Process the syntatical end of a procedure. Make sure all the
5096 appropriate pseudo-ops were found within the procedure. */
5103 if (!within_procedure
)
5104 as_bad ("misplaced .procend");
5106 if (!callinfo_found
)
5107 as_bad ("Missing .callinfo for this procedure");
5109 if (within_entry_exit
)
5110 as_bad ("Missing .EXIT for a .ENTRY");
5112 within_procedure
= FALSE
;
5113 demand_empty_rest_of_line ();
5117 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5118 then create a new space entry to hold the information specified
5119 by the parameters to the .SPACE directive. */
5121 static sd_chain_struct
*
5122 pa_parse_space_stmt (space_name
, create_flag
)
5126 char *name
, *ptemp
, c
;
5127 char loadable
, defined
, private, sort
;
5129 asection
*seg
= NULL
;
5130 sd_chain_struct
*space
;
5132 /* load default values */
5138 if (strcasecmp (space_name
, "$TEXT$") == 0)
5140 seg
= pa_def_spaces
[0].segment
;
5141 sort
= pa_def_spaces
[0].sort
;
5143 else if (strcasecmp (space_name
, "$PRIVATE$") == 0)
5145 seg
= pa_def_spaces
[1].segment
;
5146 sort
= pa_def_spaces
[1].sort
;
5149 if (!is_end_of_statement ())
5151 print_errors
= FALSE
;
5152 ptemp
= input_line_pointer
+ 1;
5153 /* First see if the space was specified as a number rather than
5154 as a name. According to the PA assembly manual the rest of
5155 the line should be ignored. */
5156 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5157 input_line_pointer
= ptemp
;
5160 while (!is_end_of_statement ())
5162 input_line_pointer
++;
5163 name
= input_line_pointer
;
5164 c
= get_symbol_end ();
5165 if ((strncasecmp (name
, "SPNUM", 5) == 0))
5167 *input_line_pointer
= c
;
5168 input_line_pointer
++;
5169 spnum
= get_absolute_expression ();
5171 else if ((strncasecmp (name
, "SORT", 4) == 0))
5173 *input_line_pointer
= c
;
5174 input_line_pointer
++;
5175 sort
= get_absolute_expression ();
5177 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5179 *input_line_pointer
= c
;
5182 else if ((strncasecmp (name
, "NOTDEFINED", 10) == 0))
5184 *input_line_pointer
= c
;
5187 else if ((strncasecmp (name
, "PRIVATE", 7) == 0))
5189 *input_line_pointer
= c
;
5194 as_bad ("Invalid .SPACE argument");
5195 *input_line_pointer
= c
;
5196 if (!is_end_of_statement ())
5197 input_line_pointer
++;
5201 print_errors
= TRUE
;
5204 if (create_flag
&& seg
== NULL
)
5205 seg
= subseg_new (space_name
, 0);
5207 /* If create_flag is nonzero, then create the new space with
5208 the attributes computed above. Else set the values in
5209 an already existing space -- this can only happen for
5210 the first occurence of a built-in space. */
5212 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5213 private, sort
, seg
, 1);
5216 space
= is_defined_space (space_name
);
5217 SPACE_SPNUM (space
) = spnum
;
5218 SPACE_LOADABLE (space
) = loadable
& 1;
5219 SPACE_DEFINED (space
) = defined
& 1;
5220 SPACE_USER_DEFINED (space
) = 1;
5221 SPACE_PRIVATE (space
) = private & 1;
5222 SPACE_SORT (space
) = sort
& 0xff;
5223 space
->sd_seg
= seg
;
5226 #ifdef obj_set_section_attributes
5227 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5233 /* Adjust the frag's alignment according to the alignment needs
5234 of the given subspace/subsegment. */
5237 pa_align_subseg (seg
, subseg
)
5241 ssd_chain_struct
*now_subspace
;
5245 now_subspace
= pa_subsegment_to_subspace (seg
, subseg
);
5248 if (SUBSPACE_ALIGN (now_subspace
) == 0)
5249 alignment
= now_subspace
->ssd_last_align
;
5250 else if (now_subspace
->ssd_last_align
> SUBSPACE_ALIGN (now_subspace
))
5251 alignment
= now_subspace
->ssd_last_align
;
5253 alignment
= SUBSPACE_ALIGN (now_subspace
);
5255 while ((1 << shift
) < alignment
)
5259 shift
= bfd_get_section_alignment (stdoutput
, seg
);
5261 frag_align (shift
, 0);
5264 /* Handle a .SPACE pseudo-op; this switches the current space to the
5265 given space, creating the new space if necessary. */
5271 char *name
, c
, *space_name
, *save_s
;
5273 sd_chain_struct
*sd_chain
;
5275 if (within_procedure
)
5277 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5278 ignore_rest_of_line ();
5282 /* Check for some of the predefined spaces. FIXME: most of the code
5283 below is repeated several times, can we extract the common parts
5284 and place them into a subroutine or something similar? */
5285 if (strncasecmp (input_line_pointer
, "$text$", 6) == 0)
5287 input_line_pointer
+= 6;
5288 sd_chain
= is_defined_space ("$TEXT$");
5289 if (sd_chain
== NULL
)
5290 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5291 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5292 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5294 current_space
= sd_chain
;
5296 /* No need to align if we are already there. */
5297 if (now_seg
!= text_section
)
5298 pa_align_subseg (now_seg
, now_subseg
);
5300 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5303 = pa_subsegment_to_subspace (text_section
,
5304 sd_chain
->sd_last_subseg
);
5305 demand_empty_rest_of_line ();
5308 if (strncasecmp (input_line_pointer
, "$private$", 9) == 0)
5310 input_line_pointer
+= 9;
5311 sd_chain
= is_defined_space ("$PRIVATE$");
5312 if (sd_chain
== NULL
)
5313 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5314 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5315 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5317 current_space
= sd_chain
;
5319 /* No need to align if we are already there. */
5320 if (now_seg
!= data_section
)
5321 pa_align_subseg (now_seg
, now_subseg
);
5323 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5325 = pa_subsegment_to_subspace (data_section
,
5326 sd_chain
->sd_last_subseg
);
5327 demand_empty_rest_of_line ();
5330 if (!strncasecmp (input_line_pointer
,
5331 GDB_DEBUG_SPACE_NAME
,
5332 strlen (GDB_DEBUG_SPACE_NAME
)))
5334 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5335 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5336 if (sd_chain
== NULL
)
5337 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5338 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5339 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5341 current_space
= sd_chain
;
5344 asection
*gdb_section
5345 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5347 /* No need to align if we are already there. */
5348 if (strcmp (segment_name (now_seg
), GDB_DEBUG_SPACE_NAME
) != 0)
5349 pa_align_subseg (now_seg
, now_subseg
);
5351 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5353 = pa_subsegment_to_subspace (gdb_section
,
5354 sd_chain
->sd_last_subseg
);
5356 demand_empty_rest_of_line ();
5360 /* It could be a space specified by number. */
5362 save_s
= input_line_pointer
;
5363 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5365 if (sd_chain
= pa_find_space_by_number (temp
))
5367 current_space
= sd_chain
;
5369 if (now_seg
!= sd_chain
->sd_seg
)
5370 pa_align_subseg (now_seg
, now_subseg
);
5371 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5373 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5374 sd_chain
->sd_last_subseg
);
5375 demand_empty_rest_of_line ();
5380 /* Not a number, attempt to create a new space. */
5382 input_line_pointer
= save_s
;
5383 name
= input_line_pointer
;
5384 c
= get_symbol_end ();
5385 space_name
= xmalloc (strlen (name
) + 1);
5386 strcpy (space_name
, name
);
5387 *input_line_pointer
= c
;
5389 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5390 current_space
= sd_chain
;
5392 if (now_seg
!= sd_chain
->sd_seg
)
5393 pa_align_subseg (now_seg
, now_subseg
);
5394 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5395 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5396 sd_chain
->sd_last_subseg
);
5397 demand_empty_rest_of_line ();
5402 /* Switch to a new space. (I think). FIXME. */
5411 sd_chain_struct
*space
;
5413 name
= input_line_pointer
;
5414 c
= get_symbol_end ();
5415 space
= is_defined_space (name
);
5419 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5422 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5424 *input_line_pointer
= c
;
5425 demand_empty_rest_of_line ();
5429 /* If VALUE is an exact power of two between zero and 2^31, then
5430 return log2 (VALUE). Else return -1. */
5438 while ((1 << shift
) != value
&& shift
< 32)
5447 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5448 given subspace, creating the new subspace if necessary.
5450 FIXME. Should mirror pa_space more closely, in particular how
5451 they're broken up into subroutines. */
5454 pa_subspace (unused
)
5457 char *name
, *ss_name
, *alias
, c
;
5458 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5459 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5460 sd_chain_struct
*space
;
5461 ssd_chain_struct
*ssd
;
5464 if (within_procedure
)
5466 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5467 ignore_rest_of_line ();
5471 name
= input_line_pointer
;
5472 c
= get_symbol_end ();
5473 ss_name
= xmalloc (strlen (name
) + 1);
5474 strcpy (ss_name
, name
);
5475 *input_line_pointer
= c
;
5477 /* Load default values. */
5490 space
= current_space
;
5491 ssd
= is_defined_subspace (ss_name
);
5492 /* Allow user to override the builtin attributes of subspaces. But
5493 only allow the attributes to be changed once! */
5494 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5496 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5497 if (!is_end_of_statement ())
5498 as_warn ("Parameters of an existing subspace can\'t be modified");
5499 demand_empty_rest_of_line ();
5504 /* A new subspace. Load default values if it matches one of
5505 the builtin subspaces. */
5507 while (pa_def_subspaces
[i
].name
)
5509 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5511 loadable
= pa_def_subspaces
[i
].loadable
;
5512 common
= pa_def_subspaces
[i
].common
;
5513 dup_common
= pa_def_subspaces
[i
].dup_common
;
5514 code_only
= pa_def_subspaces
[i
].code_only
;
5515 zero
= pa_def_subspaces
[i
].zero
;
5516 space_index
= pa_def_subspaces
[i
].space_index
;
5517 alignment
= pa_def_subspaces
[i
].alignment
;
5518 quadrant
= pa_def_subspaces
[i
].quadrant
;
5519 access
= pa_def_subspaces
[i
].access
;
5520 sort
= pa_def_subspaces
[i
].sort
;
5521 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5522 alias
= pa_def_subspaces
[i
].alias
;
5529 /* We should be working with a new subspace now. Fill in
5530 any information as specified by the user. */
5531 if (!is_end_of_statement ())
5533 input_line_pointer
++;
5534 while (!is_end_of_statement ())
5536 name
= input_line_pointer
;
5537 c
= get_symbol_end ();
5538 if ((strncasecmp (name
, "QUAD", 4) == 0))
5540 *input_line_pointer
= c
;
5541 input_line_pointer
++;
5542 quadrant
= get_absolute_expression ();
5544 else if ((strncasecmp (name
, "ALIGN", 5) == 0))
5546 *input_line_pointer
= c
;
5547 input_line_pointer
++;
5548 alignment
= get_absolute_expression ();
5549 if (log2 (alignment
) == -1)
5551 as_bad ("Alignment must be a power of 2");
5555 else if ((strncasecmp (name
, "ACCESS", 6) == 0))
5557 *input_line_pointer
= c
;
5558 input_line_pointer
++;
5559 access
= get_absolute_expression ();
5561 else if ((strncasecmp (name
, "SORT", 4) == 0))
5563 *input_line_pointer
= c
;
5564 input_line_pointer
++;
5565 sort
= get_absolute_expression ();
5567 else if ((strncasecmp (name
, "CODE_ONLY", 9) == 0))
5569 *input_line_pointer
= c
;
5572 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5574 *input_line_pointer
= c
;
5577 else if ((strncasecmp (name
, "COMMON", 6) == 0))
5579 *input_line_pointer
= c
;
5582 else if ((strncasecmp (name
, "DUP_COMM", 8) == 0))
5584 *input_line_pointer
= c
;
5587 else if ((strncasecmp (name
, "ZERO", 4) == 0))
5589 *input_line_pointer
= c
;
5592 else if ((strncasecmp (name
, "FIRST", 5) == 0))
5593 as_bad ("FIRST not supported as a .SUBSPACE argument");
5595 as_bad ("Invalid .SUBSPACE argument");
5596 if (!is_end_of_statement ())
5597 input_line_pointer
++;
5601 /* Compute a reasonable set of BFD flags based on the information
5602 in the .subspace directive. */
5603 applicable
= bfd_applicable_section_flags (stdoutput
);
5606 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5609 if (common
|| dup_common
)
5610 flags
|= SEC_IS_COMMON
;
5612 /* This is a zero-filled subspace (eg BSS). */
5616 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5617 applicable
&= flags
;
5619 /* If this is an existing subspace, then we want to use the
5620 segment already associated with the subspace.
5622 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5623 lots of sections. It might be a problem in the PA ELF
5624 code, I do not know yet. For now avoid creating anything
5625 but the "standard" sections for ELF. */
5627 section
= ssd
->ssd_seg
;
5629 section
= subseg_new (alias
, 0);
5630 else if (!alias
&& USE_ALIASES
)
5632 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5633 demand_empty_rest_of_line ();
5637 section
= subseg_new (ss_name
, 0);
5639 /* Now set the flags. */
5640 bfd_set_section_flags (stdoutput
, section
, applicable
);
5642 /* Record any alignment request for this section. */
5643 record_alignment (section
, log2 (alignment
));
5645 /* Set the starting offset for this section. */
5646 bfd_set_section_vma (stdoutput
, section
,
5647 pa_subspace_start (space
, quadrant
));
5649 /* Now that all the flags are set, update an existing subspace,
5650 or create a new one. */
5653 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5654 code_only
, common
, dup_common
,
5655 sort
, zero
, access
, space_index
,
5656 alignment
, quadrant
,
5659 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5661 dup_common
, zero
, sort
,
5662 access
, space_index
,
5663 alignment
, quadrant
, section
);
5665 demand_empty_rest_of_line ();
5666 current_subspace
->ssd_seg
= section
;
5667 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5669 SUBSPACE_DEFINED (current_subspace
) = 1;
5674 /* Create default space and subspace dictionaries. */
5681 space_dict_root
= NULL
;
5682 space_dict_last
= NULL
;
5685 while (pa_def_spaces
[i
].name
)
5689 /* Pick the right name to use for the new section. */
5690 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5691 name
= pa_def_spaces
[i
].alias
;
5693 name
= pa_def_spaces
[i
].name
;
5695 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5696 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5697 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5698 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5699 pa_def_spaces
[i
].segment
, 0);
5704 while (pa_def_subspaces
[i
].name
)
5707 int applicable
, subsegment
;
5708 asection
*segment
= NULL
;
5709 sd_chain_struct
*space
;
5711 /* Pick the right name for the new section and pick the right
5712 subsegment number. */
5713 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5715 name
= pa_def_subspaces
[i
].alias
;
5716 subsegment
= pa_def_subspaces
[i
].subsegment
;
5720 name
= pa_def_subspaces
[i
].name
;
5724 /* Create the new section. */
5725 segment
= subseg_new (name
, subsegment
);
5728 /* For SOM we want to replace the standard .text, .data, and .bss
5729 sections with our own. */
5730 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5732 text_section
= segment
;
5733 applicable
= bfd_applicable_section_flags (stdoutput
);
5734 bfd_set_section_flags (stdoutput
, text_section
,
5735 applicable
& (SEC_ALLOC
| SEC_LOAD
5736 | SEC_RELOC
| SEC_CODE
5738 | SEC_HAS_CONTENTS
));
5740 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5742 data_section
= segment
;
5743 applicable
= bfd_applicable_section_flags (stdoutput
);
5744 bfd_set_section_flags (stdoutput
, data_section
,
5745 applicable
& (SEC_ALLOC
| SEC_LOAD
5747 | SEC_HAS_CONTENTS
));
5751 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5753 bss_section
= segment
;
5754 applicable
= bfd_applicable_section_flags (stdoutput
);
5755 bfd_set_section_flags (stdoutput
, bss_section
,
5756 applicable
& SEC_ALLOC
);
5759 /* Find the space associated with this subspace. */
5760 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5761 def_space_index
].segment
);
5764 as_fatal ("Internal error: Unable to find containing space for %s.",
5765 pa_def_subspaces
[i
].name
);
5768 create_new_subspace (space
, name
,
5769 pa_def_subspaces
[i
].loadable
,
5770 pa_def_subspaces
[i
].code_only
,
5771 pa_def_subspaces
[i
].common
,
5772 pa_def_subspaces
[i
].dup_common
,
5773 pa_def_subspaces
[i
].zero
,
5774 pa_def_subspaces
[i
].sort
,
5775 pa_def_subspaces
[i
].access
,
5776 pa_def_subspaces
[i
].space_index
,
5777 pa_def_subspaces
[i
].alignment
,
5778 pa_def_subspaces
[i
].quadrant
,
5786 /* Create a new space NAME, with the appropriate flags as defined
5787 by the given parameters.
5789 Add the new space to the space dictionary chain in numerical
5790 order as defined by the SORT entries. */
5792 static sd_chain_struct
*
5793 create_new_space (name
, spnum
, loadable
, defined
, private,
5794 sort
, seg
, user_defined
)
5804 sd_chain_struct
*chain_entry
;
5806 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5808 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5811 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5812 strcpy (SPACE_NAME (chain_entry
), name
);
5813 SPACE_NAME_INDEX (chain_entry
) = 0;
5814 SPACE_LOADABLE (chain_entry
) = loadable
;
5815 SPACE_DEFINED (chain_entry
) = defined
;
5816 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5817 SPACE_PRIVATE (chain_entry
) = private;
5818 SPACE_SPNUM (chain_entry
) = spnum
;
5819 SPACE_SORT (chain_entry
) = sort
;
5821 chain_entry
->sd_seg
= seg
;
5822 chain_entry
->sd_last_subseg
= -1;
5823 chain_entry
->sd_next
= NULL
;
5825 /* Find spot for the new space based on its sort key. */
5826 if (!space_dict_last
)
5827 space_dict_last
= chain_entry
;
5829 if (space_dict_root
== NULL
)
5830 space_dict_root
= chain_entry
;
5833 sd_chain_struct
*chain_pointer
;
5834 sd_chain_struct
*prev_chain_pointer
;
5836 chain_pointer
= space_dict_root
;
5837 prev_chain_pointer
= NULL
;
5839 while (chain_pointer
)
5841 if (SPACE_SORT (chain_pointer
) <= SPACE_SORT (chain_entry
))
5843 prev_chain_pointer
= chain_pointer
;
5844 chain_pointer
= chain_pointer
->sd_next
;
5850 /* At this point we've found the correct place to add the new
5851 entry. So add it and update the linked lists as appropriate. */
5852 if (prev_chain_pointer
)
5854 chain_entry
->sd_next
= chain_pointer
;
5855 prev_chain_pointer
->sd_next
= chain_entry
;
5859 space_dict_root
= chain_entry
;
5860 chain_entry
->sd_next
= chain_pointer
;
5863 if (chain_entry
->sd_next
== NULL
)
5864 space_dict_last
= chain_entry
;
5867 /* This is here to catch predefined spaces which do not get
5868 modified by the user's input. Another call is found at
5869 the bottom of pa_parse_space_stmt to handle cases where
5870 the user modifies a predefined space. */
5871 #ifdef obj_set_section_attributes
5872 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5878 /* Create a new subspace NAME, with the appropriate flags as defined
5879 by the given parameters.
5881 Add the new subspace to the subspace dictionary chain in numerical
5882 order as defined by the SORT entries. */
5884 static ssd_chain_struct
*
5885 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5886 dup_common
, is_zero
, sort
, access
, space_index
,
5887 alignment
, quadrant
, seg
)
5888 sd_chain_struct
*space
;
5890 char loadable
, code_only
, common
, dup_common
, is_zero
;
5898 ssd_chain_struct
*chain_entry
;
5900 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5902 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5904 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5905 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5907 SUBSPACE_ACCESS (chain_entry
) = access
;
5908 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5909 SUBSPACE_COMMON (chain_entry
) = common
;
5910 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5911 SUBSPACE_SORT (chain_entry
) = sort
;
5912 SUBSPACE_CODE_ONLY (chain_entry
) = code_only
;
5913 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5914 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5915 SUBSPACE_SUBSPACE_START (chain_entry
) = pa_subspace_start (space
, quadrant
);
5916 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5917 SUBSPACE_ZERO (chain_entry
) = is_zero
;
5919 /* Initialize subspace_defined. When we hit a .subspace directive
5920 we'll set it to 1 which "locks-in" the subspace attributes. */
5921 SUBSPACE_DEFINED (chain_entry
) = 0;
5923 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5924 chain_entry
->ssd_seg
= seg
;
5925 chain_entry
->ssd_last_align
= 1;
5926 chain_entry
->ssd_next
= NULL
;
5928 /* Find spot for the new subspace based on its sort key. */
5929 if (space
->sd_subspaces
== NULL
)
5930 space
->sd_subspaces
= chain_entry
;
5933 ssd_chain_struct
*chain_pointer
;
5934 ssd_chain_struct
*prev_chain_pointer
;
5936 chain_pointer
= space
->sd_subspaces
;
5937 prev_chain_pointer
= NULL
;
5939 while (chain_pointer
)
5941 if (SUBSPACE_SORT (chain_pointer
) <= SUBSPACE_SORT (chain_entry
))
5943 prev_chain_pointer
= chain_pointer
;
5944 chain_pointer
= chain_pointer
->ssd_next
;
5951 /* Now we have somewhere to put the new entry. Insert it and update
5953 if (prev_chain_pointer
)
5955 chain_entry
->ssd_next
= chain_pointer
;
5956 prev_chain_pointer
->ssd_next
= chain_entry
;
5960 space
->sd_subspaces
= chain_entry
;
5961 chain_entry
->ssd_next
= chain_pointer
;
5965 #ifdef obj_set_subsection_attributes
5966 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5974 /* Update the information for the given subspace based upon the
5975 various arguments. Return the modified subspace chain entry. */
5977 static ssd_chain_struct
*
5978 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5979 zero
, access
, space_index
, alignment
, quadrant
, section
)
5980 sd_chain_struct
*space
;
5994 ssd_chain_struct
*chain_entry
;
5996 if ((chain_entry
= is_defined_subspace (name
)))
5998 SUBSPACE_ACCESS (chain_entry
) = access
;
5999 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
6000 SUBSPACE_COMMON (chain_entry
) = common
;
6001 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
6002 SUBSPACE_CODE_ONLY (chain_entry
) = 1;
6003 SUBSPACE_SORT (chain_entry
) = sort
;
6004 SUBSPACE_ALIGN (chain_entry
) = alignment
;
6005 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
6006 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
6007 SUBSPACE_ZERO (chain_entry
) = zero
;
6012 #ifdef obj_set_subsection_attributes
6013 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
6021 /* Return the space chain entry for the space with the name NAME or
6022 NULL if no such space exists. */
6024 static sd_chain_struct
*
6025 is_defined_space (name
)
6028 sd_chain_struct
*chain_pointer
;
6030 for (chain_pointer
= space_dict_root
;
6032 chain_pointer
= chain_pointer
->sd_next
)
6034 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
6035 return chain_pointer
;
6038 /* No mapping from segment to space was found. Return NULL. */
6042 /* Find and return the space associated with the given seg. If no mapping
6043 from the given seg to a space is found, then return NULL.
6045 Unlike subspaces, the number of spaces is not expected to grow much,
6046 so a linear exhaustive search is OK here. */
6048 static sd_chain_struct
*
6049 pa_segment_to_space (seg
)
6052 sd_chain_struct
*space_chain
;
6054 /* Walk through each space looking for the correct mapping. */
6055 for (space_chain
= space_dict_root
;
6057 space_chain
= space_chain
->sd_next
)
6059 if (space_chain
->sd_seg
== seg
)
6063 /* Mapping was not found. Return NULL. */
6067 /* Return the space chain entry for the subspace with the name NAME or
6068 NULL if no such subspace exists.
6070 Uses a linear search through all the spaces and subspaces, this may
6071 not be appropriate if we ever being placing each function in its
6074 static ssd_chain_struct
*
6075 is_defined_subspace (name
)
6078 sd_chain_struct
*space_chain
;
6079 ssd_chain_struct
*subspace_chain
;
6081 /* Walk through each space. */
6082 for (space_chain
= space_dict_root
;
6084 space_chain
= space_chain
->sd_next
)
6086 /* Walk through each subspace looking for a name which matches. */
6087 for (subspace_chain
= space_chain
->sd_subspaces
;
6089 subspace_chain
= subspace_chain
->ssd_next
)
6090 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
6091 return subspace_chain
;
6094 /* Subspace wasn't found. Return NULL. */
6098 /* Find and return the subspace associated with the given seg. If no
6099 mapping from the given seg to a subspace is found, then return NULL.
6101 If we ever put each procedure/function within its own subspace
6102 (to make life easier on the compiler and linker), then this will have
6103 to become more efficient. */
6105 static ssd_chain_struct
*
6106 pa_subsegment_to_subspace (seg
, subseg
)
6110 sd_chain_struct
*space_chain
;
6111 ssd_chain_struct
*subspace_chain
;
6113 /* Walk through each space. */
6114 for (space_chain
= space_dict_root
;
6116 space_chain
= space_chain
->sd_next
)
6118 if (space_chain
->sd_seg
== seg
)
6120 /* Walk through each subspace within each space looking for
6121 the correct mapping. */
6122 for (subspace_chain
= space_chain
->sd_subspaces
;
6124 subspace_chain
= subspace_chain
->ssd_next
)
6125 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6126 return subspace_chain
;
6130 /* No mapping from subsegment to subspace found. Return NULL. */
6134 /* Given a number, try and find a space with the name number.
6136 Return a pointer to a space dictionary chain entry for the space
6137 that was found or NULL on failure. */
6139 static sd_chain_struct
*
6140 pa_find_space_by_number (number
)
6143 sd_chain_struct
*space_chain
;
6145 for (space_chain
= space_dict_root
;
6147 space_chain
= space_chain
->sd_next
)
6149 if (SPACE_SPNUM (space_chain
) == number
)
6153 /* No appropriate space found. Return NULL. */
6157 /* Return the starting address for the given subspace. If the starting
6158 address is unknown then return zero. */
6161 pa_subspace_start (space
, quadrant
)
6162 sd_chain_struct
*space
;
6165 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6166 is not correct for the PA OSF1 port. */
6167 if ((strcasecmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6169 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6175 /* FIXME. Needs documentation. */
6177 pa_next_subseg (space
)
6178 sd_chain_struct
*space
;
6181 space
->sd_last_subseg
++;
6182 return space
->sd_last_subseg
;
6185 /* Helper function for pa_stringer. Used to find the end of
6192 unsigned int c
= *s
& CHAR_MASK
;
6204 /* Handle a .STRING type pseudo-op. */
6207 pa_stringer (append_zero
)
6210 char *s
, num_buf
[4];
6214 /* Preprocess the string to handle PA-specific escape sequences.
6215 For example, \xDD where DD is a hexidecimal number should be
6216 changed to \OOO where OOO is an octal number. */
6218 /* Skip the opening quote. */
6219 s
= input_line_pointer
+ 1;
6221 while (is_a_char (c
= pa_stringer_aux (s
++)))
6228 /* Handle \x<num>. */
6231 unsigned int number
;
6236 /* Get pas the 'x'. */
6238 for (num_digit
= 0, number
= 0, dg
= *s
;
6240 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6241 || (dg
>= 'A' && dg
<= 'F'));
6245 number
= number
* 16 + dg
- '0';
6246 else if (dg
>= 'a' && dg
<= 'f')
6247 number
= number
* 16 + dg
- 'a' + 10;
6249 number
= number
* 16 + dg
- 'A' + 10;
6259 sprintf (num_buf
, "%02o", number
);
6262 sprintf (num_buf
, "%03o", number
);
6265 for (i
= 0; i
<= num_digit
; i
++)
6266 s_start
[i
] = num_buf
[i
];
6270 /* This might be a "\"", skip over the escaped char. */
6277 stringer (append_zero
);
6278 pa_undefine_label ();
6281 /* Handle a .VERSION pseudo-op. */
6288 pa_undefine_label ();
6291 /* Just like a normal cons, but when finished we have to undefine
6292 the latest space label. */
6299 pa_undefine_label ();
6302 /* Switch to the data space. As usual delete our label. */
6309 pa_undefine_label ();
6312 /* FIXME. What's the purpose of this pseudo-op? */
6318 pa_undefine_label ();
6321 /* Like float_cons, but we need to undefine our label. */
6324 pa_float_cons (float_type
)
6327 float_cons (float_type
);
6328 pa_undefine_label ();
6331 /* Like s_fill, but delete our label when finished. */
6338 pa_undefine_label ();
6341 /* Like lcomm, but delete our label when finished. */
6344 pa_lcomm (needs_align
)
6347 s_lcomm (needs_align
);
6348 pa_undefine_label ();
6351 /* Like lsym, but delete our label when finished. */
6358 pa_undefine_label ();
6361 /* Switch to the text space. Like s_text, but delete our
6362 label when finished. */
6368 pa_undefine_label ();
6371 /* On the PA relocations which involve function symbols must not be
6372 adjusted. This so that the linker can know when/how to create argument
6373 relocation stubs for indirect calls and calls to static functions.
6375 FIXME. Also reject R_HPPA relocations which are 32 bits
6376 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6377 needs to generate relocations to push the addend and symbol value
6378 onto the stack, add them, then pop the value off the stack and
6379 use it in a relocation -- yuk. */
6382 hppa_fix_adjustable (fixp
)
6385 struct hppa_fix_struct
*hppa_fix
;
6387 hppa_fix
= fixp
->tc_fix_data
;
6389 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6392 if (fixp
->fx_addsy
== 0
6393 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6399 /* Now for some ELF specific code. FIXME. */
6401 static symext_chainS
*symext_rootP
;
6402 static symext_chainS
*symext_lastP
;
6404 /* Do any symbol processing requested by the target-cpu or target-format. */
6407 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6409 elf_symbol_type
*symbolP
;
6412 symext_chainS
*symextP
;
6413 unsigned int arg_reloc
;
6415 /* Only functions can have argument relocations. */
6416 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6419 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6421 /* If there are no argument relocation bits, then no relocation is
6422 necessary. Do not add this to the symextn section. */
6426 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6428 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6429 symextP
[0].next
= &symextP
[1];
6431 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6432 symextP
[1].next
= NULL
;
6434 if (symext_rootP
== NULL
)
6436 symext_rootP
= &symextP
[0];
6437 symext_lastP
= &symextP
[1];
6441 symext_lastP
->next
= &symextP
[0];
6442 symext_lastP
= &symextP
[1];
6446 /* Make sections needed by the target cpu and/or target format. */
6448 hppa_tc_make_sections (abfd
)
6451 symext_chainS
*symextP
;
6453 asection
*symextn_sec
;
6454 segT save_seg
= now_seg
;
6455 subsegT save_subseg
= now_subseg
;
6457 /* Build the symbol extension section. */
6458 hppa_tc_make_symextn_section ();
6460 /* Force some calculation to occur. */
6461 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6463 hppa_elf_stub_finish (abfd
);
6465 /* If no symbols for the symbol extension section, then stop now. */
6466 if (symext_rootP
== NULL
)
6469 /* Count the number of symbols for the symbol extension section. */
6470 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6473 size
= sizeof (symext_entryS
) * n
;
6475 /* Switch to the symbol extension section. */
6476 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6478 frag_wane (frag_now
);
6481 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6484 int *symtab_map
= elf_sym_extra (abfd
);
6487 /* First, patch the symbol extension record to reflect the true
6488 symbol table index. */
6490 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6492 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6493 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6497 ptr
= frag_more (sizeof (symextP
->entry
));
6498 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6501 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6502 frag_wane (frag_now
);
6504 /* Switch back to the original segment. */
6505 subseg_set (save_seg
, save_subseg
);
6510 /* Make the symbol extension section. */
6513 hppa_tc_make_symextn_section ()
6517 symext_chainS
*symextP
;
6521 segT save_seg
= now_seg
;
6522 subsegT save_subseg
= now_subseg
;
6524 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6527 size
= sizeof (symext_entryS
) * n
;
6529 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6531 bfd_set_section_flags (stdoutput
, symextn_sec
,
6532 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6533 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6535 /* Now, switch back to the original segment. */
6536 subseg_set (save_seg
, save_subseg
);
6540 /* Build the symbol extension section. */
6543 pa_build_symextn_section ()
6546 asection
*save_seg
= now_seg
;
6547 subsegT subseg
= (subsegT
) 0;
6548 subsegT save_subseg
= now_subseg
;
6550 seg
= subseg_new (".hppa_symextn", subseg
);
6551 bfd_set_section_flags (stdoutput
,
6553 SEC_HAS_CONTENTS
| SEC_READONLY
6554 | SEC_ALLOC
| SEC_LOAD
);
6556 subseg_set (save_seg
, save_subseg
);
6560 /* For ELF, this function serves one purpose: to setup the st_size
6561 field of STT_FUNC symbols. To do this, we need to scan the
6562 call_info structure list, determining st_size in one of two possible
6565 1. call_info->start_frag->fr_fix has the size of the fragment.
6566 This approach assumes that the function was built into a
6567 single fragment. This works for most cases, but might fail.
6568 For example, if there was a segment change in the middle of
6571 2. The st_size field is the difference in the addresses of the
6572 call_info->start_frag->fr_address field and the fr_address
6573 field of the next fragment with fr_type == rs_fill and
6577 elf_hppa_final_processing ()
6579 struct call_info
*call_info_pointer
;
6581 for (call_info_pointer
= call_info_root
;
6583 call_info_pointer
= call_info_pointer
->ci_next
)
6585 elf_symbol_type
*esym
6586 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6587 esym
->internal_elf_sym
.st_size
=
6588 S_GET_VALUE (call_info_pointer
->end_symbol
)
6589 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;