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
,
199 /* This structure contains information needed to assemble
200 individual instructions. */
203 /* Holds the opcode after parsing by pa_ip. */
204 unsigned long opcode
;
206 /* Holds an expression associated with the current instruction. */
209 /* Does this instruction use PC-relative addressing. */
212 /* Floating point formats for operand1 and operand2. */
213 fp_operand_format fpof1
;
214 fp_operand_format fpof2
;
216 /* Holds the field selector for this instruction
217 (for example L%, LR%, etc). */
220 /* Holds any argument relocation bits associated with this
221 instruction. (instruction should be some sort of call). */
224 /* The format specification for this instruction. */
227 /* The relocation (if any) associated with this instruction. */
231 /* PA-89 floating point registers are arranged like this:
234 +--------------+--------------+
235 | 0 or 16L | 16 or 16R |
236 +--------------+--------------+
237 | 1 or 17L | 17 or 17R |
238 +--------------+--------------+
246 +--------------+--------------+
247 | 14 or 30L | 30 or 30R |
248 +--------------+--------------+
249 | 15 or 31L | 31 or 31R |
250 +--------------+--------------+
253 The following is a version of pa_parse_number that
254 handles the L/R notation and returns the correct
255 value to put into the instruction register field.
256 The correct value to put into the instruction is
257 encoded in the structure 'pa_89_fp_reg_struct'. */
259 struct pa_89_fp_reg_struct
261 /* The register number. */
268 /* Additional information needed to build argument relocation stubs. */
271 /* The argument relocation specification. */
272 unsigned int arg_reloc
;
274 /* Number of arguments. */
275 unsigned int arg_count
;
278 /* This structure defines an entry in the subspace dictionary
281 struct subspace_dictionary_chain
283 /* Index of containing space. */
284 unsigned long ssd_space_index
;
286 /* Nonzero if this space has been defined by the user code. */
287 unsigned int ssd_defined
;
289 /* Which quadrant within the space this subspace should be loaded into. */
290 unsigned char ssd_quadrant
;
292 /* Alignment (in bytes) for this subspace. */
293 unsigned long ssd_alignment
;
295 /* Access control bits to determine read/write/execute permissions
296 as well as gateway privilege promotions. */
297 unsigned char ssd_access_control_bits
;
299 /* A sorting key so that it is possible to specify ordering of
300 subspaces within a space. */
301 unsigned char ssd_sort_key
;
303 /* Nonzero of this space should be zero filled. */
304 unsigned long ssd_zero
;
306 /* Nonzero if this is a common subspace. */
307 unsigned char ssd_common
;
309 /* Nonzero if this is a common subspace which allows symbols to be
311 unsigned char ssd_dup_common
;
313 /* Nonzero if this subspace is loadable. Note loadable subspaces
314 must be contained within loadable spaces; unloadable subspaces
315 must be contained in unloadable spaces. */
316 unsigned char ssd_loadable
;
318 /* Nonzero if this subspace contains only code. */
319 unsigned char ssd_code_only
;
321 /* Starting offset of this subspace. */
322 unsigned long ssd_subspace_start
;
324 /* Length of this subspace. */
325 unsigned long ssd_subspace_length
;
327 /* Name of this subspace. */
330 /* GAS segment and subsegment associated with this subspace. */
334 /* Index of this subspace within the subspace dictionary of the object
335 file. Not used until object file is written. */
336 int object_file_index
;
338 /* The size of the last alignment request for this subspace. */
341 /* Next space in the subspace dictionary chain. */
342 struct subspace_dictionary_chain
*ssd_next
;
345 typedef struct subspace_dictionary_chain ssd_chain_struct
;
347 /* This structure defines an entry in the subspace dictionary
350 struct space_dictionary_chain
353 /* Holds the index into the string table of the name of this
355 unsigned int sd_name_index
;
357 /* Nonzero if the space is loadable. */
358 unsigned int sd_loadable
;
360 /* Nonzero if this space has been defined by the user code or
361 as a default space. */
362 unsigned int sd_defined
;
364 /* Nonzero if this spaces has been defined by the user code. */
365 unsigned int sd_user_defined
;
367 /* Nonzero if this space is not sharable. */
368 unsigned int sd_private
;
370 /* The space number (or index). */
371 unsigned int sd_spnum
;
373 /* The sort key for this space. May be used to determine how to lay
374 out the spaces within the object file. */
375 unsigned char sd_sort_key
;
377 /* The name of this subspace. */
380 /* GAS segment to which this subspace corresponds. */
383 /* Current subsegment number being used. */
386 /* The chain of subspaces contained within this space. */
387 ssd_chain_struct
*sd_subspaces
;
389 /* The next entry in the space dictionary chain. */
390 struct space_dictionary_chain
*sd_next
;
393 typedef struct space_dictionary_chain sd_chain_struct
;
395 /* Structure for previous label tracking. Needed so that alignments,
396 callinfo declarations, etc can be easily attached to a particular
398 typedef struct label_symbol_struct
400 struct symbol
*lss_label
;
401 sd_chain_struct
*lss_space
;
402 struct label_symbol_struct
*lss_next
;
406 /* This structure defines attributes of the default subspace
407 dictionary entries. */
409 struct default_subspace_dict
411 /* Name of the subspace. */
414 /* FIXME. Is this still needed? */
417 /* Nonzero if this subspace is loadable. */
420 /* Nonzero if this subspace contains only code. */
423 /* Nonzero if this is a common subspace. */
426 /* Nonzero if this is a common subspace which allows symbols
427 to be multiply defined. */
430 /* Nonzero if this subspace should be zero filled. */
433 /* Sort key for this subspace. */
436 /* Access control bits for this subspace. Can represent RWX access
437 as well as privilege level changes for gateways. */
440 /* Index of containing space. */
443 /* Alignment (in bytes) of this subspace. */
446 /* Quadrant within space where this subspace should be loaded. */
449 /* An index into the default spaces array. */
452 /* An alias for this section (or NULL if no alias exists). */
455 /* Subsegment associated with this subspace. */
459 /* This structure defines attributes of the default space
460 dictionary entries. */
462 struct default_space_dict
464 /* Name of the space. */
467 /* Space number. It is possible to identify spaces within
468 assembly code numerically! */
471 /* Nonzero if this space is loadable. */
474 /* Nonzero if this space is "defined". FIXME is still needed */
477 /* Nonzero if this space can not be shared. */
480 /* Sort key for this space. */
483 /* Segment associated with this space. */
486 /* An alias for this section (or NULL if no alias exists). */
490 /* Extra information needed to perform fixups (relocations) on the PA. */
491 struct hppa_fix_struct
493 /* The field selector. */
499 /* Format of fixup. */
502 /* Argument relocation bits. */
505 /* The unwind descriptor associated with this fixup. */
509 /* Structure to hold information about predefined registers. */
517 /* This structure defines the mapping from a FP condition string
518 to a condition number which can be recorded in an instruction. */
525 /* This structure defines a mapping from a field selector
526 string to a field selector type. */
527 struct selector_entry
533 /* Prototypes for functions local to tc-hppa.c. */
535 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
536 static void pa_cons
PARAMS ((int));
537 static void pa_data
PARAMS ((int));
538 static void pa_desc
PARAMS ((int));
539 static void pa_float_cons
PARAMS ((int));
540 static void pa_fill
PARAMS ((int));
541 static void pa_lcomm
PARAMS ((int));
542 static void pa_lsym
PARAMS ((int));
543 static void pa_stringer
PARAMS ((int));
544 static void pa_text
PARAMS ((int));
545 static void pa_version
PARAMS ((int));
546 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
547 static int get_expression
PARAMS ((char *));
548 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
549 static int evaluate_absolute
PARAMS ((struct pa_it
*));
550 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
551 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
552 static int pa_parse_nullif
PARAMS ((char **));
553 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
554 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
555 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
556 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
557 static void pa_block
PARAMS ((int));
558 static void pa_call
PARAMS ((int));
559 static void pa_call_args
PARAMS ((struct call_desc
*));
560 static void pa_callinfo
PARAMS ((int));
561 static void pa_code
PARAMS ((int));
562 static void pa_comm
PARAMS ((int));
563 static void pa_copyright
PARAMS ((int));
564 static void pa_end
PARAMS ((int));
565 static void pa_enter
PARAMS ((int));
566 static void pa_entry
PARAMS ((int));
567 static void pa_equ
PARAMS ((int));
568 static void pa_exit
PARAMS ((int));
569 static void pa_export
PARAMS ((int));
570 static void pa_type_args
PARAMS ((symbolS
*, int));
571 static void pa_import
PARAMS ((int));
572 static void pa_label
PARAMS ((int));
573 static void pa_leave
PARAMS ((int));
574 static void pa_origin
PARAMS ((int));
575 static void pa_proc
PARAMS ((int));
576 static void pa_procend
PARAMS ((int));
577 static void pa_space
PARAMS ((int));
578 static void pa_spnum
PARAMS ((int));
579 static void pa_subspace
PARAMS ((int));
580 static void pa_param
PARAMS ((int));
581 static void pa_undefine_label
PARAMS ((void));
582 static int need_89_opcode
PARAMS ((struct pa_it
*,
583 struct pa_89_fp_reg_struct
*));
584 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
585 static label_symbol_struct
*pa_get_label
PARAMS ((void));
586 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, char,
589 static ssd_chain_struct
* create_new_subspace
PARAMS ((sd_chain_struct
*,
594 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
595 char *, char, char, char,
596 char, char, char, int,
599 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
600 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
601 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
602 static ssd_chain_struct
* pa_subsegment_to_subspace
PARAMS ((asection
*,
604 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
605 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
606 static void pa_ip
PARAMS ((char *));
607 static void fix_new_hppa
PARAMS ((fragS
*, int, short int, symbolS
*,
608 long, expressionS
*, int,
609 bfd_reloc_code_real_type
, long,
611 static void md_apply_fix_1
PARAMS ((fixS
*, long));
612 static int is_end_of_statement
PARAMS ((void));
613 static int reg_name_search
PARAMS ((char *));
614 static int pa_chk_field_selector
PARAMS ((char **));
615 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
616 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
617 static void process_exit
PARAMS ((void));
618 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
619 static void pa_align_subseg
PARAMS ((asection
*, subsegT
));
620 static int log2
PARAMS ((int));
621 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
622 static unsigned int pa_stringer_aux
PARAMS ((char *));
623 static void pa_spaces_begin
PARAMS ((void));
626 /* File and gloally scoped variable declarations. */
628 /* Root and final entry in the space chain. */
629 static sd_chain_struct
*space_dict_root
;
630 static sd_chain_struct
*space_dict_last
;
632 /* The current space and subspace. */
633 static sd_chain_struct
*current_space
;
634 static ssd_chain_struct
*current_subspace
;
636 /* Root of the call_info chain. */
637 static struct call_info
*call_info_root
;
639 /* The last call_info (for functions) structure
640 seen so it can be associated with fixups and
642 static struct call_info
*last_call_info
;
644 /* The last call description (for actual calls). */
645 static struct call_desc last_call_desc
;
647 /* Relaxation isn't supported for the PA yet. */
648 const relax_typeS md_relax_table
[] = {0};
650 /* Jumps are always the same size -- one instruction. */
651 int md_short_jump_size
= 4;
652 int md_long_jump_size
= 4;
654 /* handle of the OPCODE hash table */
655 static struct hash_control
*op_hash
= NULL
;
657 /* This array holds the chars that always start a comment. If the
658 pre-processor is disabled, these aren't very useful. */
659 const char comment_chars
[] = ";";
661 /* Table of pseudo ops for the PA. FIXME -- how many of these
662 are now redundant with the overall GAS and the object file
664 const pseudo_typeS md_pseudo_table
[] =
666 /* align pseudo-ops on the PA specify the actual alignment requested,
667 not the log2 of the requested alignment. */
668 {"align", s_align_bytes
, 8},
669 {"ALIGN", s_align_bytes
, 8},
670 {"block", pa_block
, 1},
671 {"BLOCK", pa_block
, 1},
672 {"blockz", pa_block
, 0},
673 {"BLOCKZ", pa_block
, 0},
674 {"byte", pa_cons
, 1},
675 {"BYTE", pa_cons
, 1},
676 {"call", pa_call
, 0},
677 {"CALL", pa_call
, 0},
678 {"callinfo", pa_callinfo
, 0},
679 {"CALLINFO", pa_callinfo
, 0},
680 {"code", pa_code
, 0},
681 {"CODE", pa_code
, 0},
682 {"comm", pa_comm
, 0},
683 {"COMM", pa_comm
, 0},
684 {"copyright", pa_copyright
, 0},
685 {"COPYRIGHT", pa_copyright
, 0},
686 {"data", pa_data
, 0},
687 {"DATA", pa_data
, 0},
688 {"desc", pa_desc
, 0},
689 {"DESC", pa_desc
, 0},
690 {"double", pa_float_cons
, 'd'},
691 {"DOUBLE", pa_float_cons
, 'd'},
694 {"enter", pa_enter
, 0},
695 {"ENTER", pa_enter
, 0},
696 {"entry", pa_entry
, 0},
697 {"ENTRY", pa_entry
, 0},
700 {"exit", pa_exit
, 0},
701 {"EXIT", pa_exit
, 0},
702 {"export", pa_export
, 0},
703 {"EXPORT", pa_export
, 0},
704 {"fill", pa_fill
, 0},
705 {"FILL", pa_fill
, 0},
706 {"float", pa_float_cons
, 'f'},
707 {"FLOAT", pa_float_cons
, 'f'},
708 {"half", pa_cons
, 2},
709 {"HALF", pa_cons
, 2},
710 {"import", pa_import
, 0},
711 {"IMPORT", pa_import
, 0},
714 {"label", pa_label
, 0},
715 {"LABEL", pa_label
, 0},
716 {"lcomm", pa_lcomm
, 0},
717 {"LCOMM", pa_lcomm
, 0},
718 {"leave", pa_leave
, 0},
719 {"LEAVE", pa_leave
, 0},
720 {"long", pa_cons
, 4},
721 {"LONG", pa_cons
, 4},
722 {"lsym", pa_lsym
, 0},
723 {"LSYM", pa_lsym
, 0},
724 {"octa", pa_cons
, 16},
725 {"OCTA", pa_cons
, 16},
726 {"org", pa_origin
, 0},
727 {"ORG", pa_origin
, 0},
728 {"origin", pa_origin
, 0},
729 {"ORIGIN", pa_origin
, 0},
730 {"param", pa_param
, 0},
731 {"PARAM", pa_param
, 0},
732 {"proc", pa_proc
, 0},
733 {"PROC", pa_proc
, 0},
734 {"procend", pa_procend
, 0},
735 {"PROCEND", pa_procend
, 0},
736 {"quad", pa_cons
, 8},
737 {"QUAD", pa_cons
, 8},
740 {"short", pa_cons
, 2},
741 {"SHORT", pa_cons
, 2},
742 {"single", pa_float_cons
, 'f'},
743 {"SINGLE", pa_float_cons
, 'f'},
744 {"space", pa_space
, 0},
745 {"SPACE", pa_space
, 0},
746 {"spnum", pa_spnum
, 0},
747 {"SPNUM", pa_spnum
, 0},
748 {"string", pa_stringer
, 0},
749 {"STRING", pa_stringer
, 0},
750 {"stringz", pa_stringer
, 1},
751 {"STRINGZ", pa_stringer
, 1},
752 {"subspa", pa_subspace
, 0},
753 {"SUBSPA", pa_subspace
, 0},
754 {"text", pa_text
, 0},
755 {"TEXT", pa_text
, 0},
756 {"version", pa_version
, 0},
757 {"VERSION", pa_version
, 0},
758 {"word", pa_cons
, 4},
759 {"WORD", pa_cons
, 4},
763 /* This array holds the chars that only start a comment at the beginning of
764 a line. If the line seems to have the form '# 123 filename'
765 .line and .file directives will appear in the pre-processed output.
767 Note that input_file.c hand checks for '#' at the beginning of the
768 first line of the input file. This is because the compiler outputs
769 #NO_APP at the beginning of its output.
771 Also note that '/*' will always start a comment. */
772 const char line_comment_chars
[] = "#";
774 /* This array holds the characters which act as line separators. */
775 const char line_separator_chars
[] = "!";
777 /* Chars that can be used to separate mant from exp in floating point nums. */
778 const char EXP_CHARS
[] = "eE";
780 /* Chars that mean this number is a floating point constant.
781 As in 0f12.456 or 0d1.2345e12.
783 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
784 changed in read.c. Ideally it shouldn't hae to know abou it at
785 all, but nothing is ideal around here. */
786 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
788 static struct pa_it the_insn
;
790 /* Points to the end of an expression just parsed by get_expressoin
791 and friends. FIXME. This shouldn't be handled with a file-global
793 static char *expr_end
;
795 /* Nonzero if a .callinfo appeared within the current procedure. */
796 static int callinfo_found
;
798 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
799 static int within_entry_exit
;
801 /* Nonzero if the assembler has completed exit processing for the
802 current procedure. */
803 static int exit_processing_complete
;
805 /* Nonzero if the assembler is currently within a procedure definition. */
806 static int within_procedure
;
808 /* Handle on strucutre which keep track of the last symbol
809 seen in each subspace. */
810 static label_symbol_struct
*label_symbols_rootp
= NULL
;
812 /* Holds the last field selector. */
813 static int hppa_field_selector
;
815 /* Nonzero if errors are to be printed. */
816 static int print_errors
= 1;
818 /* List of registers that are pre-defined:
820 Each general register has one predefined name of the form
821 %r<REGNUM> which has the value <REGNUM>.
823 Space and control registers are handled in a similar manner,
824 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
826 Likewise for the floating point registers, but of the form
827 %fr<REGNUM>. Floating point registers have additional predefined
828 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
829 again have the value <REGNUM>.
831 Many registers also have synonyms:
833 %r26 - %r23 have %arg0 - %arg3 as synonyms
834 %r28 - %r29 have %ret0 - %ret1 as synonyms
835 %r30 has %sp as a synonym
836 %r27 has %dp as a synonym
837 %r2 has %rp as a synonym
839 Almost every control register has a synonym; they are not listed
842 The table is sorted. Suitable for searching by a binary search. */
844 static const struct pd_reg pre_defined_registers
[] =
1056 /* This table is sorted by order of the length of the string. This is
1057 so we check for <> before we check for <. If we had a <> and checked
1058 for < first, we would get a false match. */
1059 static const struct fp_cond_map fp_cond_map
[] =
1095 static const struct selector_entry selector_table
[] =
1130 /* default space and subspace dictionaries */
1132 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1133 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1135 /* pre-defined subsegments (subspaces) for the HPPA. */
1136 #define SUBSEG_CODE 0
1137 #define SUBSEG_DATA 0
1138 #define SUBSEG_LIT 1
1139 #define SUBSEG_BSS 2
1140 #define SUBSEG_UNWIND 3
1141 #define SUBSEG_GDB_STRINGS 0
1142 #define SUBSEG_GDB_SYMBOLS 1
1144 static struct default_subspace_dict pa_def_subspaces
[] =
1146 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1147 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1148 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1149 {"$BSS$", 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
},
1151 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1154 static struct default_space_dict pa_def_spaces
[] =
1156 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1157 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1158 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1161 /* Misc local definitions used by the assembler. */
1163 /* Return nonzero if the string pointed to by S potentially represents
1164 a right or left half of a FP register */
1165 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1166 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1168 /* These macros are used to maintain spaces/subspaces. */
1169 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1170 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1171 #define SPACE_PRIVATE(space_chain) (space_chain)->sd_private
1172 #define SPACE_LOADABLE(space_chain) (space_chain)->sd_loadable
1173 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1174 #define SPACE_SORT(space_chain) (space_chain)->sd_sort_key
1175 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1176 #define SPACE_NAME_INDEX(space_chain) (space_chain)->sd_name_index
1178 #define SUBSPACE_SPACE_INDEX(ss_chain) (ss_chain)->ssd_space_index
1179 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1180 #define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_quadrant
1181 #define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_alignment
1182 #define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_access_control_bits
1183 #define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_sort_key
1184 #define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_common
1185 #define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
1186 #define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_dup_common
1187 #define SUBSPACE_CODE_ONLY(ss_chain) (ss_chain)->ssd_code_only
1188 #define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_loadable
1189 #define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_subspace_start
1190 #define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_subspace_length
1191 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1193 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1194 main loop after insertion. */
1196 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1198 ((OPCODE) |= (FIELD) << (START)); \
1202 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1203 IGNORE is used to suppress the error message. */
1205 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1207 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1210 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1216 #define is_DP_relative(exp) \
1217 ((exp).X_op == O_subtract \
1218 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1220 #define is_PC_relative(exp) \
1221 ((exp).X_op == O_subtract \
1222 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1224 #define is_complex(exp) \
1225 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1227 /* Actual functions to implement the PA specific code for the assembler. */
1229 /* Returns a pointer to the label_symbol_struct for the current space.
1230 or NULL if no label_symbol_struct exists for the current space. */
1232 static label_symbol_struct
*
1235 label_symbol_struct
*label_chain
;
1236 sd_chain_struct
*space_chain
= current_space
;
1238 for (label_chain
= label_symbols_rootp
;
1240 label_chain
= label_chain
->lss_next
)
1241 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1247 /* Defines a label for the current space. If one is already defined,
1248 this function will replace it with the new label. */
1251 pa_define_label (symbol
)
1254 label_symbol_struct
*label_chain
= pa_get_label ();
1255 sd_chain_struct
*space_chain
= current_space
;
1258 label_chain
->lss_label
= symbol
;
1261 /* Create a new label entry and add it to the head of the chain. */
1263 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1264 label_chain
->lss_label
= symbol
;
1265 label_chain
->lss_space
= space_chain
;
1266 label_chain
->lss_next
= NULL
;
1268 if (label_symbols_rootp
)
1269 label_chain
->lss_next
= label_symbols_rootp
;
1271 label_symbols_rootp
= label_chain
;
1275 /* Removes a label definition for the current space.
1276 If there is no label_symbol_struct entry, then no action is taken. */
1279 pa_undefine_label ()
1281 label_symbol_struct
*label_chain
;
1282 label_symbol_struct
*prev_label_chain
= NULL
;
1283 sd_chain_struct
*space_chain
= current_space
;
1285 for (label_chain
= label_symbols_rootp
;
1287 label_chain
= label_chain
->lss_next
)
1289 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1291 /* Remove the label from the chain and free its memory. */
1292 if (prev_label_chain
)
1293 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1295 label_symbols_rootp
= label_chain
->lss_next
;
1300 prev_label_chain
= label_chain
;
1305 /* An HPPA-specific version of fix_new. This is required because the HPPA
1306 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1307 results in the creation of an instance of an hppa_fix_struct. An
1308 hppa_fix_struct stores the extra information along with a pointer to the
1309 original fixS. This is attached to the original fixup via the
1310 tc_fix_data field. */
1313 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1314 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1318 symbolS
*add_symbol
;
1322 bfd_reloc_code_real_type r_type
;
1330 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1331 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1334 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1336 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1337 new_fix
->tc_fix_data
= hppa_fix
;
1338 hppa_fix
->fx_r_type
= r_type
;
1339 hppa_fix
->fx_r_field
= r_field
;
1340 hppa_fix
->fx_r_format
= r_format
;
1341 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1344 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1346 /* If necessary call BFD backend function to attach the
1347 unwind bits to the target dependent parts of a BFD symbol.
1349 #ifdef obj_attach_unwind_info
1350 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1354 /* foo-$global$ is used to access non-automatic storage. $global$
1355 is really just a marker and has served its purpose, so eliminate
1356 it now so as not to confuse write.c. */
1357 if (!strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1358 new_fix
->fx_subsy
= NULL
;
1361 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1362 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1365 parse_cons_expression_hppa (exp
)
1368 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1372 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1373 hppa_field_selector is set by the parse_cons_expression_hppa. */
1376 cons_fix_new_hppa (frag
, where
, size
, exp
)
1382 unsigned int reloc_type
;
1384 if (is_DP_relative (*exp
))
1385 reloc_type
= R_HPPA_GOTOFF
;
1386 else if (is_complex (*exp
))
1387 reloc_type
= R_HPPA_COMPLEX
;
1389 reloc_type
= R_HPPA
;
1391 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1392 as_warn ("Invalid field selector. Assuming F%%.");
1394 fix_new_hppa (frag
, where
, size
,
1395 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, reloc_type
,
1396 hppa_field_selector
, 32, 0, (char *) 0);
1398 /* Reset field selector to its default state. */
1399 hppa_field_selector
= 0;
1402 /* This function is called once, at assembler startup time. It should
1403 set up all the tables, etc. that the MD part of the assembler will need. */
1408 const char *retval
= NULL
;
1412 last_call_info
= NULL
;
1413 call_info_root
= NULL
;
1415 /* Folding of text and data segments fails miserably on the PA.
1416 Warn user and disable "-R" option. */
1419 as_warn ("-R option not supported on this target.");
1420 flag_readonly_data_in_text
= 0;
1426 op_hash
= hash_new ();
1427 if (op_hash
== NULL
)
1428 as_fatal ("Virtual memory exhausted");
1430 while (i
< NUMOPCODES
)
1432 const char *name
= pa_opcodes
[i
].name
;
1433 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*)&pa_opcodes
[i
]);
1434 if (retval
!= NULL
&& *retval
!= '\0')
1436 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1441 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1442 != pa_opcodes
[i
].match
)
1444 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1445 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1450 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1454 as_fatal ("Broken assembler. No assembly attempted.");
1456 /* SOM will change text_section. To make sure we never put
1457 anything into the old one switch to the new one now. */
1458 subseg_set (text_section
, 0);
1461 /* Called at the end of assembling a source file. Nothing to do
1462 at this point on the PA. */
1470 /* Assemble a single instruction storing it into a frag. */
1477 /* The had better be something to assemble. */
1480 /* Assemble the instruction. Results are saved into "the_insn". */
1483 /* Get somewhere to put the assembled instrution. */
1486 /* Output the opcode. */
1487 md_number_to_chars (to
, the_insn
.opcode
, 4);
1489 /* If necessary output more stuff. */
1490 if (the_insn
.reloc
!= R_HPPA_NONE
)
1491 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1492 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1493 the_insn
.reloc
, the_insn
.field_selector
,
1494 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1498 /* Do the real work for assembling a single instruction. Store results
1499 into the global "the_insn" variable.
1501 FIXME: Should define and use some functions/macros to handle
1502 various common insertions of information into the opcode. */
1508 char *error_message
= "";
1509 char *s
, c
, *argstart
, *name
, *save_s
;
1513 int cmpltr
, nullif
, flag
, cond
, num
;
1514 unsigned long opcode
;
1515 struct pa_opcode
*insn
;
1517 /* Skip to something interesting. */
1518 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1537 as_bad ("Unknown opcode: `%s'", str
);
1543 /* Convert everything into lower case. */
1546 if (isupper (*save_s
))
1547 *save_s
= tolower (*save_s
);
1551 /* Look up the opcode in the has table. */
1552 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1554 as_bad ("Unknown opcode: `%s'", str
);
1563 /* Mark the location where arguments for the instruction start, then
1564 start processing them. */
1568 /* Do some initialization. */
1569 opcode
= insn
->match
;
1570 bzero (&the_insn
, sizeof (the_insn
));
1572 the_insn
.reloc
= R_HPPA_NONE
;
1574 /* Build the opcode, checking as we go to make
1575 sure that the operands match. */
1576 for (args
= insn
->args
;; ++args
)
1581 /* End of arguments. */
1597 /* These must match exactly. */
1606 /* Handle a 5 bit register or control register field at 10. */
1609 num
= pa_parse_number (&s
, 0);
1610 CHECK_FIELD (num
, 31, 0, 0);
1611 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1613 /* Handle a 5 bit register field at 15. */
1615 num
= pa_parse_number (&s
, 0);
1616 CHECK_FIELD (num
, 31, 0, 0);
1617 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1619 /* Handle a 5 bit register field at 31. */
1622 num
= pa_parse_number (&s
, 0);
1623 CHECK_FIELD (num
, 31, 0, 0);
1624 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1626 /* Handle a 5 bit field length at 31. */
1628 num
= pa_get_absolute_expression (&the_insn
, &s
);
1630 CHECK_FIELD (num
, 32, 1, 0);
1631 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1633 /* Handle a 5 bit immediate at 15. */
1635 num
= pa_get_absolute_expression (&the_insn
, &s
);
1637 CHECK_FIELD (num
, 15, -16, 0);
1638 low_sign_unext (num
, 5, &num
);
1639 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1641 /* Handle a 5 bit immediate at 31. */
1643 num
= pa_get_absolute_expression (&the_insn
, &s
);
1645 CHECK_FIELD (num
, 15, -16, 0)
1646 low_sign_unext (num
, 5, &num
);
1647 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1649 /* Handle an unsigned 5 bit immediate at 31. */
1651 num
= pa_get_absolute_expression (&the_insn
, &s
);
1653 CHECK_FIELD (num
, 31, 0, 0);
1654 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1656 /* Handle an unsigned 5 bit immediate at 15. */
1658 num
= pa_get_absolute_expression (&the_insn
, &s
);
1660 CHECK_FIELD (num
, 31, 0, 0);
1661 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1663 /* Handle a 2 bit space identifier at 17. */
1665 num
= pa_parse_number (&s
, 0);
1666 CHECK_FIELD (num
, 3, 0, 1);
1667 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1669 /* Handle a 3 bit space identifier at 18. */
1671 num
= pa_parse_number (&s
, 0);
1672 CHECK_FIELD (num
, 7, 0, 1);
1673 dis_assemble_3 (num
, &num
);
1674 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1676 /* Handle a completer for an indexing load or store. */
1682 while (*s
== ',' && i
< 2)
1685 if (strncasecmp (s
, "sm", 2) == 0)
1692 else if (strncasecmp (s
, "m", 1) == 0)
1694 else if (strncasecmp (s
, "s", 1) == 0)
1697 as_bad ("Invalid Indexed Load Completer.");
1702 as_bad ("Invalid Indexed Load Completer Syntax.");
1704 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1707 /* Handle a short load/store completer. */
1715 if (strncasecmp (s
, "ma", 2) == 0)
1720 else if (strncasecmp (s
, "mb", 2) == 0)
1726 as_bad ("Invalid Short Load/Store Completer.");
1730 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1733 /* Handle a stbys completer. */
1739 while (*s
== ',' && i
< 2)
1742 if (strncasecmp (s
, "m", 1) == 0)
1744 else if (strncasecmp (s
, "b", 1) == 0)
1746 else if (strncasecmp (s
, "e", 1) == 0)
1749 as_bad ("Invalid Store Bytes Short Completer");
1754 as_bad ("Invalid Store Bytes Short Completer");
1756 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1759 /* Handle a non-negated compare/stubtract condition. */
1761 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1764 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1767 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1769 /* Handle a negated or non-negated compare/subtract condition. */
1772 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1776 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1779 as_bad ("Invalid Compare/Subtract Condition.");
1784 /* Negated condition requires an opcode change. */
1788 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1790 /* Handle a negated or non-negated add condition. */
1793 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1797 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1800 as_bad ("Invalid Compare/Subtract Condition");
1805 /* Negated condition requires an opcode change. */
1809 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1811 /* Handle a compare/subtract condition. */
1818 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1823 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1826 as_bad ("Invalid Compare/Subtract Condition");
1830 opcode
|= cmpltr
<< 13;
1831 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1833 /* Handle a non-negated add condition. */
1842 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1846 if (strcmp (name
, "=") == 0)
1848 else if (strcmp (name
, "<") == 0)
1850 else if (strcmp (name
, "<=") == 0)
1852 else if (strcasecmp (name
, "nuv") == 0)
1854 else if (strcasecmp (name
, "znv") == 0)
1856 else if (strcasecmp (name
, "sv") == 0)
1858 else if (strcasecmp (name
, "od") == 0)
1860 else if (strcasecmp (name
, "n") == 0)
1862 else if (strcasecmp (name
, "tr") == 0)
1867 else if (strcasecmp (name
, "<>") == 0)
1872 else if (strcasecmp (name
, ">=") == 0)
1877 else if (strcasecmp (name
, ">") == 0)
1882 else if (strcasecmp (name
, "uv") == 0)
1887 else if (strcasecmp (name
, "vnz") == 0)
1892 else if (strcasecmp (name
, "nsv") == 0)
1897 else if (strcasecmp (name
, "ev") == 0)
1903 as_bad ("Invalid Add Condition: %s", name
);
1906 nullif
= pa_parse_nullif (&s
);
1907 opcode
|= nullif
<< 1;
1908 opcode
|= cmpltr
<< 13;
1909 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1911 /* HANDLE a logical instruction condition. */
1919 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1923 if (strcmp (name
, "=") == 0)
1925 else if (strcmp (name
, "<") == 0)
1927 else if (strcmp (name
, "<=") == 0)
1929 else if (strcasecmp (name
, "od") == 0)
1931 else if (strcasecmp (name
, "tr") == 0)
1936 else if (strcmp (name
, "<>") == 0)
1941 else if (strcmp (name
, ">=") == 0)
1946 else if (strcmp (name
, ">") == 0)
1951 else if (strcasecmp (name
, "ev") == 0)
1957 as_bad ("Invalid Logical Instruction Condition.");
1960 opcode
|= cmpltr
<< 13;
1961 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1963 /* Handle a unit instruction condition. */
1970 if (strncasecmp (s
, "sbz", 3) == 0)
1975 else if (strncasecmp (s
, "shz", 3) == 0)
1980 else if (strncasecmp (s
, "sdc", 3) == 0)
1985 else if (strncasecmp (s
, "sbc", 3) == 0)
1990 else if (strncasecmp (s
, "shc", 3) == 0)
1995 else if (strncasecmp (s
, "tr", 2) == 0)
2001 else if (strncasecmp (s
, "nbz", 3) == 0)
2007 else if (strncasecmp (s
, "nhz", 3) == 0)
2013 else if (strncasecmp (s
, "ndc", 3) == 0)
2019 else if (strncasecmp (s
, "nbc", 3) == 0)
2025 else if (strncasecmp (s
, "nhc", 3) == 0)
2032 as_bad ("Invalid Logical Instruction Condition.");
2034 opcode
|= cmpltr
<< 13;
2035 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
2037 /* Handle a shift/extract/deposit condition. */
2045 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
2049 if (strcmp (name
, "=") == 0)
2051 else if (strcmp (name
, "<") == 0)
2053 else if (strcasecmp (name
, "od") == 0)
2055 else if (strcasecmp (name
, "tr") == 0)
2057 else if (strcmp (name
, "<>") == 0)
2059 else if (strcmp (name
, ">=") == 0)
2061 else if (strcasecmp (name
, "ev") == 0)
2063 /* Handle movb,n. Put things back the way they were.
2064 This includes moving s back to where it started. */
2065 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
2072 as_bad ("Invalid Shift/Extract/Deposit Condition.");
2075 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2077 /* Handle bvb and bb conditions. */
2083 if (strncmp (s
, "<", 1) == 0)
2088 else if (strncmp (s
, ">=", 2) == 0)
2094 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2096 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2098 /* Handle a system control completer. */
2100 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2108 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2110 /* Handle a nullification completer for branch instructions. */
2112 nullif
= pa_parse_nullif (&s
);
2113 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2115 /* Handle a 11 bit immediate at 31. */
2117 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2120 if (the_insn
.exp
.X_op
== O_constant
)
2122 num
= evaluate_absolute (&the_insn
);
2123 CHECK_FIELD (num
, 1023, -1024, 0);
2124 low_sign_unext (num
, 11, &num
);
2125 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2129 if (is_DP_relative (the_insn
.exp
))
2130 the_insn
.reloc
= R_HPPA_GOTOFF
;
2131 else if (is_PC_relative (the_insn
.exp
))
2132 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2133 else if (is_complex (the_insn
.exp
))
2134 the_insn
.reloc
= R_HPPA_COMPLEX
;
2136 the_insn
.reloc
= R_HPPA
;
2137 the_insn
.format
= 11;
2141 /* Handle a 14 bit immediate at 31. */
2143 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2146 if (the_insn
.exp
.X_op
== O_constant
)
2148 num
= evaluate_absolute (&the_insn
);
2149 CHECK_FIELD (num
, 8191, -8192, 0);
2150 low_sign_unext (num
, 14, &num
);
2151 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2155 if (is_DP_relative (the_insn
.exp
))
2156 the_insn
.reloc
= R_HPPA_GOTOFF
;
2157 else if (is_PC_relative (the_insn
.exp
))
2158 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2159 else if (is_complex (the_insn
.exp
))
2160 the_insn
.reloc
= R_HPPA_COMPLEX
;
2162 the_insn
.reloc
= R_HPPA
;
2163 the_insn
.format
= 14;
2167 /* Handle a 21 bit immediate at 31. */
2169 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2172 if (the_insn
.exp
.X_op
== O_constant
)
2174 num
= evaluate_absolute (&the_insn
);
2175 CHECK_FIELD (num
, 2097151, 0, 0);
2176 dis_assemble_21 (num
, &num
);
2177 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2181 if (is_DP_relative (the_insn
.exp
))
2182 the_insn
.reloc
= R_HPPA_GOTOFF
;
2183 else if (is_PC_relative (the_insn
.exp
))
2184 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2185 else if (is_complex (the_insn
.exp
))
2186 the_insn
.reloc
= R_HPPA_COMPLEX
;
2188 the_insn
.reloc
= R_HPPA
;
2189 the_insn
.format
= 21;
2193 /* Handle a 12 bit branch displacement. */
2195 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2199 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2201 unsigned int w1
, w
, result
;
2203 num
= evaluate_absolute (&the_insn
);
2206 as_bad ("Branch to unaligned address");
2209 CHECK_FIELD (num
, 8191, -8192, 0);
2210 sign_unext ((num
- 8) >> 2, 12, &result
);
2211 dis_assemble_12 (result
, &w1
, &w
);
2212 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2216 if (is_complex (the_insn
.exp
))
2217 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2219 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2220 the_insn
.format
= 12;
2221 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2222 bzero (&last_call_desc
, sizeof (struct call_desc
));
2227 /* Handle a 17 bit branch displacement. */
2229 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2233 if (! the_insn
.exp
.X_add_symbol
2234 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2237 unsigned int w2
, w1
, w
, result
;
2239 num
= evaluate_absolute (&the_insn
);
2242 as_bad ("Branch to unaligned address");
2245 CHECK_FIELD (num
, 262143, -262144, 0);
2247 if (the_insn
.exp
.X_add_symbol
)
2250 sign_unext (num
>> 2, 17, &result
);
2251 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2252 INSERT_FIELD_AND_CONTINUE (opcode
,
2253 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2257 if (is_complex (the_insn
.exp
))
2258 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2260 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2261 the_insn
.format
= 17;
2262 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2263 bzero (&last_call_desc
, sizeof (struct call_desc
));
2267 /* Handle an absolute 17 bit branch target. */
2269 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2273 if (! the_insn
.exp
.X_add_symbol
2274 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2277 unsigned int w2
, w1
, w
, result
;
2279 num
= evaluate_absolute (&the_insn
);
2282 as_bad ("Branch to unaligned address");
2285 CHECK_FIELD (num
, 262143, -262144, 0);
2287 if (the_insn
.exp
.X_add_symbol
)
2290 sign_unext (num
>> 2, 17, &result
);
2291 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2292 INSERT_FIELD_AND_CONTINUE (opcode
,
2293 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2297 if (is_complex (the_insn
.exp
))
2298 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2300 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2301 the_insn
.format
= 17;
2305 /* Handle a 5 bit shift count at 26. */
2307 num
= pa_get_absolute_expression (&the_insn
, &s
);
2309 CHECK_FIELD (num
, 31, 0, 0);
2310 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2312 /* Handle a 5 bit bit position at 26. */
2314 num
= pa_get_absolute_expression (&the_insn
, &s
);
2316 CHECK_FIELD (num
, 31, 0, 0);
2317 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2319 /* Handle a 5 bit immediate at 10. */
2321 num
= pa_get_absolute_expression (&the_insn
, &s
);
2323 CHECK_FIELD (num
, 31, 0, 0);
2324 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2326 /* Handle a 13 bit immediate at 18. */
2328 num
= pa_get_absolute_expression (&the_insn
, &s
);
2330 CHECK_FIELD (num
, 4095, -4096, 0);
2331 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2333 /* Handle a 26 bit immediate at 31. */
2335 num
= pa_get_absolute_expression (&the_insn
, &s
);
2337 CHECK_FIELD (num
, 671108864, 0, 0);
2338 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2340 /* Handle a 3 bit SFU identifier at 25. */
2342 num
= pa_get_absolute_expression (&the_insn
, &s
);
2344 CHECK_FIELD (num
, 7, 0, 0);
2345 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2347 /* We don't support any of these. FIXME. */
2354 /* Handle a source FP operand format completer. */
2356 flag
= pa_parse_fp_format (&s
);
2357 the_insn
.fpof1
= flag
;
2358 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2360 /* Handle a destination FP operand format completer. */
2362 /* pa_parse_format needs the ',' prefix. */
2364 flag
= pa_parse_fp_format (&s
);
2365 the_insn
.fpof2
= flag
;
2366 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2368 /* Handle FP compare conditions. */
2370 cond
= pa_parse_fp_cmp_cond (&s
);
2371 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2373 /* Handle L/R register halves like 't'. */
2376 struct pa_89_fp_reg_struct result
;
2378 pa_parse_number (&s
, &result
);
2379 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2380 opcode
|= result
.number_part
;
2382 /* 0x30 opcodes are FP arithmetic operation opcodes
2383 and need to be turned into 0x38 opcodes. This
2384 is not necessary for loads/stores. */
2385 if (need_89_opcode (&the_insn
, &result
)
2386 && ((opcode
& 0xfc000000) == 0x30000000))
2389 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2392 /* Handle L/R register halves like 'b'. */
2395 struct pa_89_fp_reg_struct result
;
2397 pa_parse_number (&s
, &result
);
2398 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2399 opcode
|= result
.number_part
<< 21;
2400 if (need_89_opcode (&the_insn
, &result
))
2402 opcode
|= (result
.l_r_select
& 1) << 7;
2408 /* Handle L/R register halves like 'x'. */
2411 struct pa_89_fp_reg_struct result
;
2413 pa_parse_number (&s
, &result
);
2414 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2415 opcode
|= (result
.number_part
& 0x1f) << 16;
2416 if (need_89_opcode (&the_insn
, &result
))
2418 opcode
|= (result
.l_r_select
& 1) << 12;
2424 /* Handle a 5 bit register field at 10. */
2427 struct pa_89_fp_reg_struct result
;
2429 pa_parse_number (&s
, &result
);
2430 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2431 if (the_insn
.fpof1
== SGL
)
2433 result
.number_part
&= 0xF;
2434 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2436 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2439 /* Handle a 5 bit register field at 15. */
2442 struct pa_89_fp_reg_struct result
;
2444 pa_parse_number (&s
, &result
);
2445 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2446 if (the_insn
.fpof1
== SGL
)
2448 result
.number_part
&= 0xF;
2449 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2451 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2454 /* Handle a 5 bit register field at 31. */
2457 struct pa_89_fp_reg_struct result
;
2459 pa_parse_number (&s
, &result
);
2460 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2461 if (the_insn
.fpof1
== SGL
)
2463 result
.number_part
&= 0xF;
2464 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2466 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2469 /* Handle a 5 bit register field at 20. */
2472 struct pa_89_fp_reg_struct result
;
2474 pa_parse_number (&s
, &result
);
2475 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2476 if (the_insn
.fpof1
== SGL
)
2478 result
.number_part
&= 0xF;
2479 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2481 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2484 /* Handle a 5 bit register field at 25. */
2487 struct pa_89_fp_reg_struct result
;
2489 pa_parse_number (&s
, &result
);
2490 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2491 if (the_insn
.fpof1
== SGL
)
2493 result
.number_part
&= 0xF;
2494 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2496 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2499 /* Handle a floating point operand format at 26.
2500 Only allows single and double precision. */
2502 flag
= pa_parse_fp_format (&s
);
2508 the_insn
.fpof1
= flag
;
2514 as_bad ("Invalid Floating Point Operand Format.");
2524 /* Check if the args matched. */
2527 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2528 && !strcmp (insn
->name
, insn
[1].name
))
2536 as_bad ("Invalid operands %s", error_message
);
2543 the_insn
.opcode
= opcode
;
2547 /* Turn a string in input_line_pointer into a floating point constant of type
2548 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2549 emitted is stored in *sizeP . An error message or NULL is returned. */
2551 #define MAX_LITTLENUMS 6
2554 md_atof (type
, litP
, sizeP
)
2560 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2561 LITTLENUM_TYPE
*wordP
;
2593 return "Bad call to MD_ATOF()";
2595 t
= atof_ieee (input_line_pointer
, type
, words
);
2597 input_line_pointer
= t
;
2598 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2599 for (wordP
= words
; prec
--;)
2601 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2602 litP
+= sizeof (LITTLENUM_TYPE
);
2607 /* Write out big-endian. */
2610 md_number_to_chars (buf
, val
, n
)
2632 /* Translate internal representation of relocation info to BFD target
2636 tc_gen_reloc (section
, fixp
)
2641 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2642 bfd_reloc_code_real_type code
;
2643 static int unwind_reloc_fixp_cnt
= 0;
2644 static arelent
*unwind_reloc_entryP
= NULL
;
2645 static arelent
*no_relocs
= NULL
;
2647 bfd_reloc_code_real_type
**codes
;
2651 if (fixp
->fx_addsy
== 0)
2653 assert (hppa_fixp
!= 0);
2654 assert (section
!= 0);
2657 /* Yuk. I would really like to push all this ELF specific unwind
2658 crud into BFD and the linker. That's how SOM does it -- and
2659 if we could make ELF emulate that then we could share more code
2660 in GAS (and potentially a gnu-linker later).
2662 Unwind section relocations are handled in a special way.
2663 The relocations for the .unwind section are originally
2664 built in the usual way. That is, for each unwind table
2665 entry there are two relocations: one for the beginning of
2666 the function and one for the end.
2668 The first time we enter this function we create a
2669 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2670 of the relocation is initialized to 0. Each additional
2671 pair of times this function is called for the unwind
2672 section represents an additional unwind table entry. Thus,
2673 the addend of the relocation should end up to be the number
2674 of unwind table entries. */
2675 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2677 if (unwind_reloc_entryP
== NULL
)
2679 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2681 assert (reloc
!= 0);
2682 unwind_reloc_entryP
= reloc
;
2683 unwind_reloc_fixp_cnt
++;
2684 unwind_reloc_entryP
->address
2685 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2686 /* A pointer to any function will do. We only
2687 need one to tell us what section the unwind
2688 relocations are for. */
2689 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2690 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2691 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2692 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2693 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2694 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2695 sizeof (arelent
*) * 2);
2696 assert (relocs
!= 0);
2697 relocs
[0] = unwind_reloc_entryP
;
2701 unwind_reloc_fixp_cnt
++;
2702 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2708 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2709 assert (reloc
!= 0);
2711 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2712 codes
= hppa_gen_reloc_type (stdoutput
,
2714 hppa_fixp
->fx_r_format
,
2715 hppa_fixp
->fx_r_field
);
2717 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2720 relocs
= (arelent
**)
2721 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2722 assert (relocs
!= 0);
2724 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2725 sizeof (arelent
) * n_relocs
);
2727 assert (reloc
!= 0);
2729 for (i
= 0; i
< n_relocs
; i
++)
2730 relocs
[i
] = &reloc
[i
];
2732 relocs
[n_relocs
] = NULL
;
2735 switch (fixp
->fx_r_type
)
2737 case R_HPPA_COMPLEX
:
2738 case R_HPPA_COMPLEX_PCREL_CALL
:
2739 case R_HPPA_COMPLEX_ABS_CALL
:
2740 assert (n_relocs
== 5);
2742 for (i
= 0; i
< n_relocs
; i
++)
2744 reloc
[i
].sym_ptr_ptr
= NULL
;
2745 reloc
[i
].address
= 0;
2746 reloc
[i
].addend
= 0;
2747 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2748 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2751 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2752 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2753 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2755 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2756 reloc
[3].addend
= fixp
->fx_addnumber
;
2757 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2758 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2759 reloc
[1].addend
= fixp
->fx_addnumber
;
2764 assert (n_relocs
== 1);
2768 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2769 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2770 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2771 reloc
->addend
= 0; /* default */
2773 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2775 /* Now, do any processing that is dependent on the relocation type. */
2778 case R_HPPA_PLABEL_32
:
2779 case R_HPPA_PLABEL_11
:
2780 case R_HPPA_PLABEL_14
:
2781 case R_HPPA_PLABEL_L21
:
2782 case R_HPPA_PLABEL_R11
:
2783 case R_HPPA_PLABEL_R14
:
2784 /* For plabel relocations, the addend of the
2785 relocation should be either 0 (no static link) or 2
2786 (static link required).
2788 FIXME: assume that fx_addnumber contains this
2790 reloc
->addend
= fixp
->fx_addnumber
;
2793 case R_HPPA_ABS_CALL_11
:
2794 case R_HPPA_ABS_CALL_14
:
2795 case R_HPPA_ABS_CALL_17
:
2796 case R_HPPA_ABS_CALL_L21
:
2797 case R_HPPA_ABS_CALL_R11
:
2798 case R_HPPA_ABS_CALL_R14
:
2799 case R_HPPA_ABS_CALL_R17
:
2800 case R_HPPA_ABS_CALL_LS21
:
2801 case R_HPPA_ABS_CALL_RS11
:
2802 case R_HPPA_ABS_CALL_RS14
:
2803 case R_HPPA_ABS_CALL_RS17
:
2804 case R_HPPA_ABS_CALL_LD21
:
2805 case R_HPPA_ABS_CALL_RD11
:
2806 case R_HPPA_ABS_CALL_RD14
:
2807 case R_HPPA_ABS_CALL_RD17
:
2808 case R_HPPA_ABS_CALL_LR21
:
2809 case R_HPPA_ABS_CALL_RR14
:
2810 case R_HPPA_ABS_CALL_RR17
:
2812 case R_HPPA_PCREL_CALL_11
:
2813 case R_HPPA_PCREL_CALL_14
:
2814 case R_HPPA_PCREL_CALL_17
:
2815 case R_HPPA_PCREL_CALL_L21
:
2816 case R_HPPA_PCREL_CALL_R11
:
2817 case R_HPPA_PCREL_CALL_R14
:
2818 case R_HPPA_PCREL_CALL_R17
:
2819 case R_HPPA_PCREL_CALL_LS21
:
2820 case R_HPPA_PCREL_CALL_RS11
:
2821 case R_HPPA_PCREL_CALL_RS14
:
2822 case R_HPPA_PCREL_CALL_RS17
:
2823 case R_HPPA_PCREL_CALL_LD21
:
2824 case R_HPPA_PCREL_CALL_RD11
:
2825 case R_HPPA_PCREL_CALL_RD14
:
2826 case R_HPPA_PCREL_CALL_RD17
:
2827 case R_HPPA_PCREL_CALL_LR21
:
2828 case R_HPPA_PCREL_CALL_RR14
:
2829 case R_HPPA_PCREL_CALL_RR17
:
2830 /* The constant is stored in the instruction. */
2831 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2834 reloc
->addend
= fixp
->fx_addnumber
;
2841 /* Preliminary relocation handling for SOM. Needs to handle
2842 COMPLEX relocations (yes, I've seen them occur) and it will
2843 need to handle R_ENTRY/R_EXIT relocations in the very near future
2844 (for generating unwinds). */
2845 switch (fixp
->fx_r_type
)
2847 case R_HPPA_COMPLEX
:
2848 case R_HPPA_COMPLEX_PCREL_CALL
:
2849 case R_HPPA_COMPLEX_ABS_CALL
:
2853 assert (n_relocs
== 1);
2857 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2858 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2859 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2866 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2869 reloc
->addend
= fixp
->fx_addnumber
;
2879 /* Process any machine dependent frag types. */
2882 md_convert_frag (abfd
, sec
, fragP
)
2884 register asection
*sec
;
2885 register fragS
*fragP
;
2887 unsigned int address
;
2889 if (fragP
->fr_type
== rs_machine_dependent
)
2891 switch ((int) fragP
->fr_subtype
)
2894 fragP
->fr_type
= rs_fill
;
2895 know (fragP
->fr_var
== 1);
2896 know (fragP
->fr_next
);
2897 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2898 if (address
% fragP
->fr_offset
)
2901 fragP
->fr_next
->fr_address
2906 fragP
->fr_offset
= 0;
2912 /* Round up a section size to the appropriate boundary. */
2915 md_section_align (segment
, size
)
2919 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2920 int align2
= (1 << align
) - 1;
2922 return (size
+ align2
) & ~align2
;
2926 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2928 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2930 addressT from_addr
, to_addr
;
2934 fprintf (stderr
, "pa_create_short_jmp\n");
2938 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2940 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2942 addressT from_addr
, to_addr
;
2946 fprintf (stderr
, "pa_create_long_jump\n");
2950 /* Return the approximate size of a frag before relaxation has occurred. */
2952 md_estimate_size_before_relax (fragP
, segment
)
2953 register fragS
*fragP
;
2960 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2966 /* Parse machine dependent options. There are none on the PA. */
2968 md_parse_option (argP
, cntP
, vecP
)
2976 /* We have no need to default values of symbols. */
2979 md_undefined_symbol (name
)
2985 /* Parse an operand that is machine-specific.
2986 We just return without modifying the expression as we have nothing
2990 md_operand (expressionP
)
2991 expressionS
*expressionP
;
2995 /* Helper function for md_apply_fix. Actually determine if the fix
2996 can be applied, and if so, apply it.
2998 If a fix is applied, then set fx_addsy to NULL which indicates
2999 the fix was applied and need not be emitted into the object file. */
3002 md_apply_fix_1 (fixP
, val
)
3006 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
3007 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
3008 long new_val
, result
;
3009 unsigned int w1
, w2
, w
;
3011 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3012 never be "applied". They must always be emitted. */
3014 if (fixP
->fx_r_type
== R_HPPA_ENTRY
3015 || fixP
->fx_r_type
== R_HPPA_EXIT
)
3019 /* There should have been an HPPA specific fixup associated
3020 with the GAS fixup. */
3023 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
3024 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
3026 if (fixP
->fx_r_type
== R_HPPA_NONE
)
3029 /* Remember this value for emit_reloc. FIXME, is this braindamage
3030 documented anywhere!?! */
3031 fixP
->fx_addnumber
= val
;
3033 /* Check if this is an undefined symbol. No relocation can
3034 possibly be performed in this case. */
3035 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
3037 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
3040 if (fmt
!= 0 && fmt
!= 32)
3041 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3047 /* Handle all opcodes with the 'j' operand type. */
3049 CHECK_FIELD (new_val
, 8191, -8192, 0);
3051 /* Mask off 14 bits to be changed. */
3052 bfd_put_32 (stdoutput
,
3053 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3055 low_sign_unext (new_val
, 14, &result
);
3058 /* Handle all opcodes with the 'k' operand type. */
3060 CHECK_FIELD (new_val
, 2097152, 0, 0);
3062 /* Mask off 21 bits to be changed. */
3063 bfd_put_32 (stdoutput
,
3064 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3066 dis_assemble_21 (new_val
, &result
);
3069 /* Handle all the opcodes with the 'i' operand type. */
3071 CHECK_FIELD (new_val
, 1023, -1023, 0);
3073 /* Mask off 11 bits to be changed. */
3074 bfd_put_32 (stdoutput
,
3075 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3077 low_sign_unext (new_val
, 11, &result
);
3080 /* Handle all the opcodes with the 'w' operand type. */
3082 CHECK_FIELD (new_val
, 8191, -8192, 0)
3084 /* Mask off 11 bits to be changed. */
3085 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3086 bfd_put_32 (stdoutput
,
3087 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3090 dis_assemble_12 (result
, &w1
, &w
);
3091 result
= ((w1
<< 2) | w
);
3092 fixP
->fx_addsy
= NULL
;
3095 #define stub_needed(CALLER, CALLEE) \
3096 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3098 /* Handle some of the opcodes with the 'W' operand type. */
3100 /* If a long-call stub or argument relocation stub is
3101 needed, then we can not apply this relocation, instead
3102 the linker must handle it. */
3103 if (new_val
> 262143 || new_val
< -262144
3104 || stub_needed (((obj_symbol_type
*)
3105 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3106 hppa_fixP
->fx_arg_reloc
))
3109 /* No stubs were needed, we can perform this relocation. */
3110 CHECK_FIELD (new_val
, 262143, -262144, 0);
3112 /* Mask off 17 bits to be changed. */
3113 bfd_put_32 (stdoutput
,
3114 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3116 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3117 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3118 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3119 fixP
->fx_addsy
= NULL
;
3127 /* These are ELF specific relocations. ELF unfortunately
3128 handles unwinds in a completely different manner. */
3129 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3130 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3131 result
= fixP
->fx_addnumber
;
3136 fixP
->fx_addnumber
= fixP
->fx_offset
;
3137 bfd_put_32 (stdoutput
, 0, buf
);
3146 as_bad ("Unknown relocation encountered in md_apply_fix.");
3150 /* Insert the relocation. */
3151 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3154 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3155 (unsigned int) fixP
, fixP
->fx_r_type
);
3158 /* Apply a fix into a frag's data (if possible). */
3161 md_apply_fix (fixP
, valp
)
3165 md_apply_fix_1 (fixP
, (long) *valp
);
3169 /* Exactly what point is a PC-relative offset relative TO?
3170 On the PA, they're relative to the address of the offset. */
3173 md_pcrel_from (fixP
)
3176 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3179 /* Return nonzero if the input line pointer is at the end of
3183 is_end_of_statement ()
3185 return ((*input_line_pointer
== '\n')
3186 || (*input_line_pointer
== ';')
3187 || (*input_line_pointer
== '!'));
3190 /* Read a number from S. The number might come in one of many forms,
3191 the most common will be a hex or decimal constant, but it could be
3192 a pre-defined register (Yuk!), or an absolute symbol.
3194 Return a number or -1 for failure.
3196 When parsing PA-89 FP register numbers RESULT will be
3197 the address of a structure to return information about
3198 L/R half of FP registers, store results there as appropriate.
3200 pa_parse_number can not handle negative constants and will fail
3201 horribly if it is passed such a constant. */
3204 pa_parse_number (s
, result
)
3206 struct pa_89_fp_reg_struct
*result
;
3215 /* Skip whitespace before the number. */
3216 while (*p
== ' ' || *p
== '\t')
3219 /* Store info in RESULT if requested by caller. */
3222 result
->number_part
= -1;
3223 result
->l_r_select
= -1;
3229 /* Looks like a number. */
3232 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3234 /* The number is specified in hex. */
3236 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3237 || ((*p
>= 'A') && (*p
<= 'F')))
3240 num
= num
* 16 + *p
- '0';
3241 else if (*p
>= 'a' && *p
<= 'f')
3242 num
= num
* 16 + *p
- 'a' + 10;
3244 num
= num
* 16 + *p
- 'A' + 10;
3250 /* The number is specified in decimal. */
3251 while (isdigit (*p
))
3253 num
= num
* 10 + *p
- '0';
3258 /* Store info in RESULT if requested by the caller. */
3261 result
->number_part
= num
;
3263 if (IS_R_SELECT (p
))
3265 result
->l_r_select
= 1;
3268 else if (IS_L_SELECT (p
))
3270 result
->l_r_select
= 0;
3274 result
->l_r_select
= 0;
3279 /* The number might be a predefined register. */
3284 /* Tege hack: Special case for general registers as the general
3285 code makes a binary search with case translation, and is VERY
3290 if (*p
== 'e' && *(p
+ 1) == 't'
3291 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3294 num
= *p
- '0' + 28;
3302 else if (!isdigit (*p
))
3305 as_bad ("Undefined register: '%s'.", name
);
3311 num
= num
* 10 + *p
++ - '0';
3312 while (isdigit (*p
));
3317 /* Do a normal register search. */
3318 while (is_part_of_name (c
))
3324 status
= reg_name_search (name
);
3330 as_bad ("Undefined register: '%s'.", name
);
3336 /* Store info in RESULT if requested by caller. */
3339 result
->number_part
= num
;
3340 if (IS_R_SELECT (p
- 1))
3341 result
->l_r_select
= 1;
3342 else if (IS_L_SELECT (p
- 1))
3343 result
->l_r_select
= 0;
3345 result
->l_r_select
= 0;
3350 /* And finally, it could be a symbol in the absolute section which
3351 is effectively a constant. */
3355 while (is_part_of_name (c
))
3361 if ((sym
= symbol_find (name
)) != NULL
)
3363 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3364 num
= S_GET_VALUE (sym
);
3368 as_bad ("Non-absolute symbol: '%s'.", name
);
3374 /* There is where we'd come for an undefined symbol
3375 or for an empty string. For an empty string we
3376 will return zero. That's a concession made for
3377 compatability with the braindamaged HP assemblers. */
3383 as_bad ("Undefined absolute constant: '%s'.", name
);
3389 /* Store info in RESULT if requested by caller. */
3392 result
->number_part
= num
;
3393 if (IS_R_SELECT (p
- 1))
3394 result
->l_r_select
= 1;
3395 else if (IS_L_SELECT (p
- 1))
3396 result
->l_r_select
= 0;
3398 result
->l_r_select
= 0;
3406 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3408 /* Given NAME, find the register number associated with that name, return
3409 the integer value associated with the given name or -1 on failure. */
3412 reg_name_search (name
)
3415 int middle
, low
, high
;
3418 high
= REG_NAME_CNT
- 1;
3422 middle
= (low
+ high
) / 2;
3423 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) < 0)
3428 while (!((strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0) ||
3431 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0)
3432 return (pre_defined_registers
[middle
].value
);
3438 /* Return nonzero if the given INSN and L/R information will require
3439 a new PA-89 opcode. */
3442 need_89_opcode (insn
, result
)
3444 struct pa_89_fp_reg_struct
*result
;
3446 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3452 /* Parse a condition for a fcmp instruction. Return the numerical
3453 code associated with the condition. */
3456 pa_parse_fp_cmp_cond (s
)
3463 for (i
= 0; i
< 32; i
++)
3465 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3466 strlen (fp_cond_map
[i
].string
)) == 0)
3468 cond
= fp_cond_map
[i
].cond
;
3469 *s
+= strlen (fp_cond_map
[i
].string
);
3470 while (**s
== ' ' || **s
== '\t')
3476 as_bad ("Invalid FP Compare Condition: %c", **s
);
3480 /* Parse an FP operand format completer returning the completer
3483 static fp_operand_format
3484 pa_parse_fp_format (s
)
3493 if (strncasecmp (*s
, "sgl", 3) == 0)
3498 else if (strncasecmp (*s
, "dbl", 3) == 0)
3503 else if (strncasecmp (*s
, "quad", 4) == 0)
3510 format
= ILLEGAL_FMT
;
3511 as_bad ("Invalid FP Operand Format: %3s", *s
);
3518 /* Convert from a selector string into a selector type. */
3521 pa_chk_field_selector (str
)
3525 const struct selector_entry
*tablep
;
3529 /* Read past any whitespace. */
3530 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3533 /* Yuk. Looks like a linear search through the table. With the
3534 frequence of some selectors it might make sense to sort the
3536 for (tablep
= selector_table
; tablep
->prefix
; tablep
++)
3538 if (strncasecmp (tablep
->prefix
, *str
, strlen (tablep
->prefix
)) == 0)
3540 *str
+= strlen (tablep
->prefix
);
3541 selector
= tablep
->field_selector
;
3548 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3551 get_expression (str
)
3557 save_in
= input_line_pointer
;
3558 input_line_pointer
= str
;
3559 seg
= expression (&the_insn
.exp
);
3560 if (!(seg
== absolute_section
3561 || seg
== undefined_section
3562 || SEG_NORMAL (seg
)))
3564 as_warn ("Bad segment in expression.");
3565 expr_end
= input_line_pointer
;
3566 input_line_pointer
= save_in
;
3569 expr_end
= input_line_pointer
;
3570 input_line_pointer
= save_in
;
3574 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3576 pa_get_absolute_expression (insn
, strp
)
3582 insn
->field_selector
= pa_chk_field_selector (strp
);
3583 save_in
= input_line_pointer
;
3584 input_line_pointer
= *strp
;
3585 expression (&insn
->exp
);
3586 if (insn
->exp
.X_op
!= O_constant
)
3588 as_bad ("Bad segment (should be absolute).");
3589 expr_end
= input_line_pointer
;
3590 input_line_pointer
= save_in
;
3593 expr_end
= input_line_pointer
;
3594 input_line_pointer
= save_in
;
3595 return evaluate_absolute (insn
);
3598 /* Evaluate an absolute expression EXP which may be modified by
3599 the selector FIELD_SELECTOR. Return the value of the expression. */
3601 evaluate_absolute (insn
)
3605 expressionS exp
= insn
->exp
;
3606 int field_selector
= insn
->field_selector
;
3608 value
= exp
.X_add_number
;
3610 switch (field_selector
)
3616 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3618 if (value
& 0x00000400)
3620 value
= (value
& 0xfffff800) >> 11;
3623 /* Sign extend from bit 21. */
3625 if (value
& 0x00000400)
3626 value
|= 0xfffff800;
3631 /* Arithmetic shift right 11 bits. */
3633 value
= (value
& 0xfffff800) >> 11;
3636 /* Set bits 0-20 to zero. */
3638 value
= value
& 0x7ff;
3641 /* Add 0x800 and arithmetic shift right 11 bits. */
3646 value
= (value
& 0xfffff800) >> 11;
3649 /* Set bitgs 0-21 to one. */
3651 value
|= 0xfffff800;
3654 /* This had better get fixed. It looks like we're quickly moving
3661 BAD_CASE (field_selector
);
3667 /* Given an argument location specification return the associated
3668 argument location number. */
3671 pa_build_arg_reloc (type_name
)
3675 if (strncasecmp (type_name
, "no", 2) == 0)
3677 if (strncasecmp (type_name
, "gr", 2) == 0)
3679 else if (strncasecmp (type_name
, "fr", 2) == 0)
3681 else if (strncasecmp (type_name
, "fu", 2) == 0)
3684 as_bad ("Invalid argument location: %s\n", type_name
);
3689 /* Encode and return an argument relocation specification for
3690 the given register in the location specified by arg_reloc. */
3693 pa_align_arg_reloc (reg
, arg_reloc
)
3695 unsigned int arg_reloc
;
3697 unsigned int new_reloc
;
3699 new_reloc
= arg_reloc
;
3715 as_bad ("Invalid argument description: %d", reg
);
3721 /* Parse a PA nullification completer (,n). Return nonzero if the
3722 completer was found; return zero if no completer was found. */
3734 if (strncasecmp (*s
, "n", 1) == 0)
3738 as_bad ("Invalid Nullification: (%c)", **s
);
3747 /* Parse a non-negated compare/subtract completer returning the
3748 number (for encoding in instrutions) of the given completer.
3750 ISBRANCH specifies whether or not this is parsing a condition
3751 completer for a branch (vs a nullification completer for a
3752 computational instruction. */
3755 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3760 char *name
= *s
+ 1;
3768 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3772 if (strcmp (name
, "=") == 0)
3776 else if (strcmp (name
, "<") == 0)
3780 else if (strcmp (name
, "<=") == 0)
3784 else if (strcmp (name
, "<<") == 0)
3788 else if (strcmp (name
, "<<=") == 0)
3792 else if (strcasecmp (name
, "sv") == 0)
3796 else if (strcasecmp (name
, "od") == 0)
3800 /* If we have something like addb,n then there is no condition
3802 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3813 /* Reset pointers if this was really a ,n for a branch instruction. */
3814 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3820 /* Parse a negated compare/subtract completer returning the
3821 number (for encoding in instrutions) of the given completer.
3823 ISBRANCH specifies whether or not this is parsing a condition
3824 completer for a branch (vs a nullification completer for a
3825 computational instruction. */
3828 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3833 char *name
= *s
+ 1;
3841 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3845 if (strcasecmp (name
, "tr") == 0)
3849 else if (strcmp (name
, "<>") == 0)
3853 else if (strcmp (name
, ">=") == 0)
3857 else if (strcmp (name
, ">") == 0)
3861 else if (strcmp (name
, ">>=") == 0)
3865 else if (strcmp (name
, ">>") == 0)
3869 else if (strcasecmp (name
, "nsv") == 0)
3873 else if (strcasecmp (name
, "ev") == 0)
3877 /* If we have something like addb,n then there is no condition
3879 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3890 /* Reset pointers if this was really a ,n for a branch instruction. */
3891 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3897 /* Parse a non-negated addition completer returning the number
3898 (for encoding in instrutions) of the given completer.
3900 ISBRANCH specifies whether or not this is parsing a condition
3901 completer for a branch (vs a nullification completer for a
3902 computational instruction. */
3905 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3910 char *name
= *s
+ 1;
3918 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3922 if (strcmp (name
, "=") == 0)
3926 else if (strcmp (name
, "<") == 0)
3930 else if (strcmp (name
, "<=") == 0)
3934 else if (strcasecmp (name
, "nuv") == 0)
3938 else if (strcasecmp (name
, "znv") == 0)
3942 else if (strcasecmp (name
, "sv") == 0)
3946 else if (strcasecmp (name
, "od") == 0)
3950 /* If we have something like addb,n then there is no condition
3952 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3963 /* Reset pointers if this was really a ,n for a branch instruction. */
3964 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3970 /* Parse a negated addition completer returning the number
3971 (for encoding in instrutions) of the given completer.
3973 ISBRANCH specifies whether or not this is parsing a condition
3974 completer for a branch (vs a nullification completer for a
3975 computational instruction. */
3978 pa_parse_neg_add_cmpltr (s
, isbranch
)
3983 char *name
= *s
+ 1;
3991 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3995 if (strcasecmp (name
, "tr") == 0)
3999 else if (strcmp (name
, "<>") == 0)
4003 else if (strcmp (name
, ">=") == 0)
4007 else if (strcmp (name
, ">") == 0)
4011 else if (strcmp (name
, "uv") == 0)
4015 else if (strcmp (name
, "vnz") == 0)
4019 else if (strcasecmp (name
, "nsv") == 0)
4023 else if (strcasecmp (name
, "ev") == 0)
4027 /* If we have something like addb,n then there is no condition
4029 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4040 /* Reset pointers if this was really a ,n for a branch instruction. */
4041 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4047 /* Handle a .BLOCK type pseudo-op. */
4055 unsigned int temp_size
;
4058 temp_size
= get_absolute_expression ();
4060 /* Always fill with zeros, that's what the HP assembler does. */
4063 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4064 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4065 bzero (p
, temp_size
);
4067 /* Convert 2 bytes at a time. */
4069 for (i
= 0; i
< temp_size
; i
+= 2)
4071 md_number_to_chars (p
+ i
,
4073 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4076 pa_undefine_label ();
4077 demand_empty_rest_of_line ();
4081 /* Handle a .CALL pseudo-op. This involves storing away information
4082 about where arguments are to be found so the linker can detect
4083 (and correct) argument location mismatches between caller and callee. */
4089 pa_call_args (&last_call_desc
);
4090 demand_empty_rest_of_line ();
4094 /* Do the dirty work of building a call descriptor which describes
4095 where the caller placed arguments to a function call. */
4098 pa_call_args (call_desc
)
4099 struct call_desc
*call_desc
;
4102 unsigned int temp
, arg_reloc
;
4104 while (!is_end_of_statement ())
4106 name
= input_line_pointer
;
4107 c
= get_symbol_end ();
4108 /* Process a source argument. */
4109 if ((strncasecmp (name
, "argw", 4) == 0))
4111 temp
= atoi (name
+ 4);
4112 p
= input_line_pointer
;
4114 input_line_pointer
++;
4115 name
= input_line_pointer
;
4116 c
= get_symbol_end ();
4117 arg_reloc
= pa_build_arg_reloc (name
);
4118 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4120 /* Process a return value. */
4121 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4123 p
= input_line_pointer
;
4125 input_line_pointer
++;
4126 name
= input_line_pointer
;
4127 c
= get_symbol_end ();
4128 arg_reloc
= pa_build_arg_reloc (name
);
4129 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4133 as_bad ("Invalid .CALL argument: %s", name
);
4135 p
= input_line_pointer
;
4137 if (!is_end_of_statement ())
4138 input_line_pointer
++;
4142 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4145 is_same_frag (frag1
, frag2
)
4152 else if (frag2
== NULL
)
4154 else if (frag1
== frag2
)
4156 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4157 return (is_same_frag (frag1
, frag2
->fr_next
));
4163 /* Build an entry in the UNWIND subspace from the given function
4164 attributes in CALL_INFO. This is not needed for SOM as using
4165 R_ENTRY and R_EXIT relocations allow the linker to handle building
4166 of the unwind spaces. */
4169 pa_build_unwind_subspace (call_info
)
4170 struct call_info
*call_info
;
4173 asection
*seg
, *save_seg
;
4174 subsegT subseg
, save_subseg
;
4178 /* Get into the right seg/subseg. This may involve creating
4179 the seg the first time through. Make sure to have the
4180 old seg/subseg so that we can reset things when we are done. */
4181 subseg
= SUBSEG_UNWIND
;
4182 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4183 if (seg
== ASEC_NULL
)
4185 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4186 bfd_set_section_flags (stdoutput
, seg
,
4187 SEC_READONLY
| SEC_HAS_CONTENTS
4188 | SEC_LOAD
| SEC_RELOC
);
4192 save_subseg
= now_subseg
;
4193 subseg_set (seg
, subseg
);
4196 /* Get some space to hold relocation information for the unwind
4199 call_info
->start_offset_frag
= frag_now
;
4200 call_info
->start_frag_where
= p
- frag_now
->fr_literal
;
4202 /* Relocation info. for start offset of the function. */
4203 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4204 call_info
->start_symbol
, (offsetT
) 0,
4205 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4208 /* We need to search for the first relocation involving the start_symbol of
4209 this call_info descriptor. */
4213 call_info
->start_fix
= seg_info (now_seg
)->fix_root
;
4214 for (fixP
= call_info
->start_fix
; fixP
; fixP
= fixP
->fx_next
)
4216 if (fixP
->fx_addsy
== call_info
->start_symbol
4217 || fixP
->fx_subsy
== call_info
->start_symbol
)
4219 call_info
->start_fix
= fixP
;
4226 call_info
->end_offset_frag
= frag_now
;
4227 call_info
->end_frag_where
= p
- frag_now
->fr_literal
;
4229 /* Relocation info. for end offset of the function. */
4230 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4231 call_info
->end_symbol
, (offsetT
) 0,
4232 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4235 /* We need to search for the first relocation involving the end_symbol of
4236 this call_info descriptor. */
4240 call_info
->end_fix
= seg_info (now_seg
)->fix_root
; /* the default */
4241 for (fixP
= call_info
->end_fix
; fixP
; fixP
= fixP
->fx_next
)
4243 if (fixP
->fx_addsy
== call_info
->end_symbol
4244 || fixP
->fx_subsy
== call_info
->end_symbol
)
4246 call_info
->end_fix
= fixP
;
4253 unwind
= (char *) &call_info
->ci_unwind
;
4254 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4258 FRAG_APPEND_1_CHAR (c
);
4262 /* Return back to the original segment/subsegment. */
4263 subseg_set (save_seg
, save_subseg
);
4267 /* Process a .CALLINFO pseudo-op. This information is used later
4268 to build unwind descriptors and maybe one day to support
4269 .ENTER and .LEAVE. */
4272 pa_callinfo (unused
)
4278 /* .CALLINFO must appear within a procedure definition. */
4279 if (!within_procedure
)
4280 as_bad (".callinfo is not within a procedure definition");
4282 /* Mark the fact that we found the .CALLINFO for the
4283 current procedure. */
4284 callinfo_found
= TRUE
;
4286 /* Iterate over the .CALLINFO arguments. */
4287 while (!is_end_of_statement ())
4289 name
= input_line_pointer
;
4290 c
= get_symbol_end ();
4291 /* Frame size specification. */
4292 if ((strncasecmp (name
, "frame", 5) == 0))
4294 p
= input_line_pointer
;
4296 input_line_pointer
++;
4297 temp
= get_absolute_expression ();
4298 if ((temp
& 0x3) != 0)
4300 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4304 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4305 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4308 /* Entry register (GR, GR and SR) specifications. */
4309 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4311 p
= input_line_pointer
;
4313 input_line_pointer
++;
4314 temp
= get_absolute_expression ();
4315 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4316 even though %r19 is caller saved. I think this is a bug in
4317 the HP assembler, and we are not going to emulate it. */
4318 if (temp
< 3 || temp
> 18)
4319 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4320 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4322 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4324 p
= input_line_pointer
;
4326 input_line_pointer
++;
4327 temp
= get_absolute_expression ();
4328 /* Similarly the HP assembler takes 31 as the high bound even
4329 though %fr21 is the last callee saved floating point register. */
4330 if (temp
< 12 || temp
> 21)
4331 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4332 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4334 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4336 p
= input_line_pointer
;
4338 input_line_pointer
++;
4339 temp
= get_absolute_expression ();
4341 as_bad ("Value for ENTRY_SR must be 3\n");
4342 last_call_info
->entry_sr
= temp
- 2;
4344 /* Note whether or not this function performs any calls. */
4345 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4346 (strncasecmp (name
, "caller", 6) == 0))
4348 p
= input_line_pointer
;
4350 last_call_info
->makes_calls
= 1;
4352 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4354 p
= input_line_pointer
;
4356 last_call_info
->makes_calls
= 0;
4358 /* Should RP be saved into the stack. */
4359 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4361 p
= input_line_pointer
;
4363 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4365 /* Likewise for SP. */
4366 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4368 p
= input_line_pointer
;
4370 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4372 /* Is this an unwindable procedure. If so mark it so
4373 in the unwind descriptor. */
4374 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4376 p
= input_line_pointer
;
4378 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4380 /* Is this an interrupt routine. If so mark it in the
4381 unwind descriptor. */
4382 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4384 p
= input_line_pointer
;
4386 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4390 as_bad ("Invalid .CALLINFO argument: %s", name
);
4392 if (!is_end_of_statement ())
4393 input_line_pointer
++;
4396 demand_empty_rest_of_line ();
4400 /* Switch into the code subspace. */
4406 sd_chain_struct
*sdchain
;
4408 /* First time through it might be necessary to create the
4410 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4412 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4413 pa_def_spaces
[0].spnum
,
4414 pa_def_spaces
[0].loadable
,
4415 pa_def_spaces
[0].defined
,
4416 pa_def_spaces
[0].private,
4417 pa_def_spaces
[0].sort
,
4418 pa_def_spaces
[0].segment
, 0);
4421 SPACE_DEFINED (sdchain
) = 1;
4422 subseg_set (text_section
, SUBSEG_CODE
);
4423 demand_empty_rest_of_line ();
4427 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4428 the .comm pseudo-op has the following symtax:
4430 <label> .comm <length>
4432 where <label> is optional and is a symbol whose address will be the start of
4433 a block of memory <length> bytes long. <length> must be an absolute
4434 expression. <length> bytes will be allocated in the current space
4443 label_symbol_struct
*label_symbol
= pa_get_label ();
4446 symbol
= label_symbol
->lss_label
;
4451 size
= get_absolute_expression ();
4455 /* It is incorrect to check S_IS_DEFINED at this point as
4456 the symbol will *always* be defined. FIXME. How to
4457 correctly determine when this label really as been
4459 if (S_GET_VALUE (symbol
))
4461 if (S_GET_VALUE (symbol
) != size
)
4463 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4464 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4470 S_SET_VALUE (symbol
, size
);
4471 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4472 S_SET_EXTERNAL (symbol
);
4475 demand_empty_rest_of_line ();
4478 /* Process a .COPYRIGHT pseudo-op. */
4481 pa_copyright (unused
)
4488 if (*input_line_pointer
== '\"')
4490 ++input_line_pointer
;
4491 name
= input_line_pointer
;
4492 while ((c
= next_char_of_string ()) >= 0)
4494 c
= *input_line_pointer
;
4495 *input_line_pointer
= '\0';
4496 *(input_line_pointer
- 1) = '\0';
4498 /* FIXME. Not supported */
4501 *input_line_pointer
= c
;
4505 as_bad ("Expected \"-ed string");
4507 pa_undefine_label ();
4508 demand_empty_rest_of_line ();
4511 /* Process a .END pseudo-op. */
4517 demand_empty_rest_of_line ();
4521 /* Process a .ENTER pseudo-op. This is not supported. */
4530 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4536 if (!within_procedure
)
4537 as_bad ("Misplaced .entry. Ignored.");
4540 if (!callinfo_found
)
4541 as_bad ("Missing .callinfo.");
4543 last_call_info
->start_frag
= frag_now
;
4545 demand_empty_rest_of_line ();
4546 within_entry_exit
= TRUE
;
4548 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4549 It will not be on if no .EXPORT pseudo-op exists (static function). */
4550 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4553 /* SOM defers building of unwind descriptors until the link phase.
4554 The assembler is responsible for creating an R_ENTRY relocation
4555 to mark the beginning of a region and hold the unwind bits, and
4556 for creating an R_EXIT relocation to mark the end of the region.
4558 FIXME. ELF should be using the same conventions! The problem
4559 is an unwind requires too much relocation space. Hmmm. Maybe
4560 if we split the unwind bits up between the relocations which
4561 denote the entry and exit points. */
4563 char *where
= frag_more (0);
4565 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4566 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4567 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4568 (char *)&last_call_info
->ci_unwind
.descriptor
);
4575 /* Handle a .EQU pseudo-op. */
4581 label_symbol_struct
*label_symbol
= pa_get_label ();
4586 symbol
= label_symbol
->lss_label
;
4587 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4588 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4593 as_bad (".REG must use a label");
4595 as_bad (".EQU must use a label");
4598 pa_undefine_label ();
4599 demand_empty_rest_of_line ();
4603 /* Helper function. Does processing for the end of a function. This
4604 usually involves creating some relocations or building special
4605 symbols to mark the end of the function. */
4612 where
= frag_more (0);
4615 /* ELF does not have EXIT relocations. All we do is create a
4616 temporary symbol marking the end of the function. */
4618 char *name
= (char *) xmalloc (strlen ("L$\001end_") +
4619 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
4625 strcpy (name
, "L$\001end_");
4626 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
4628 symbolP
= symbol_find (name
);
4630 as_warn ("Symbol '%s' already defined.", name
);
4633 /* symbol value should be the offset of the
4634 last instruction of the function */
4635 symbolP
= symbol_new (name
, now_seg
,
4636 (valueT
) (obstack_next_free (&frags
)
4637 - frag_now
->fr_literal
- 4),
4641 symbolP
->bsym
->flags
= BSF_LOCAL
;
4642 symbol_table_insert (symbolP
);
4645 last_call_info
->end_symbol
= symbolP
;
4647 as_bad ("Symbol '%s' could not be created.", name
);
4651 as_bad ("No memory for symbol name.");
4654 /* Stuff away the location of the frag for the end of the function,
4655 and call pa_build_unwind_subspace to add an entry in the unwind
4657 last_call_info
->end_frag
= frag_now
;
4658 pa_build_unwind_subspace (last_call_info
);
4660 /* SOM defers building of unwind descriptors until the link phase.
4661 The assembler is responsible for creating an R_ENTRY relocation
4662 to mark the beginning of a region and hold the unwind bits, and
4663 for creating an R_EXIT relocation to mark the end of the region.
4665 FIXME. ELF should be using the same conventions! The problem
4666 is an unwind requires too much relocation space. Hmmm. Maybe
4667 if we split the unwind bits up between the relocations which
4668 denote the entry and exit points. */
4669 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4670 last_call_info
->start_symbol
, (offsetT
) 0,
4671 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4674 exit_processing_complete
= TRUE
;
4677 /* Process a .EXIT pseudo-op. */
4683 if (!within_procedure
)
4684 as_bad (".EXIT must appear within a procedure");
4687 if (!callinfo_found
)
4688 as_bad ("Missing .callinfo");
4691 if (!within_entry_exit
)
4692 as_bad ("No .ENTRY for this .EXIT");
4695 within_entry_exit
= FALSE
;
4700 demand_empty_rest_of_line ();
4704 /* Process a .EXPORT directive. This makes functions external
4705 and provides information such as argument relocation entries
4715 name
= input_line_pointer
;
4716 c
= get_symbol_end ();
4717 /* Make sure the given symbol exists. */
4718 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4720 as_bad ("Cannot define export symbol: %s\n", name
);
4721 p
= input_line_pointer
;
4723 input_line_pointer
++;
4727 /* OK. Set the external bits and process argument relocations. */
4728 S_SET_EXTERNAL (symbol
);
4729 p
= input_line_pointer
;
4731 if (!is_end_of_statement ())
4733 input_line_pointer
++;
4734 pa_type_args (symbol
, 1);
4736 pa_build_symextn_section ();
4741 demand_empty_rest_of_line ();
4745 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4748 pa_type_args (symbolP
, is_export
)
4753 unsigned int temp
, arg_reloc
;
4754 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4755 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4757 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4760 input_line_pointer
+= 8;
4761 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4762 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4763 type
= SYMBOL_TYPE_ABSOLUTE
;
4765 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4767 input_line_pointer
+= 4;
4768 if (is_export
&& (symbolP
->bsym
->flags
& BSF_FUNCTION
))
4770 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4771 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4772 type
= SYMBOL_TYPE_ENTRY
;
4776 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4777 type
= SYMBOL_TYPE_CODE
;
4780 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4782 input_line_pointer
+= 4;
4783 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4784 type
= SYMBOL_TYPE_DATA
;
4786 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4788 input_line_pointer
+= 5;
4789 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4790 type
= SYMBOL_TYPE_ENTRY
;
4792 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4794 input_line_pointer
+= 9;
4795 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4796 type
= SYMBOL_TYPE_MILLICODE
;
4798 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4800 input_line_pointer
+= 6;
4801 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4802 type
= SYMBOL_TYPE_PLABEL
;
4804 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4806 input_line_pointer
+= 8;
4807 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4808 type
= SYMBOL_TYPE_PRI_PROG
;
4810 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4812 input_line_pointer
+= 8;
4813 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4814 type
= SYMBOL_TYPE_SEC_PROG
;
4817 /* SOM requires much more information about symbol types
4818 than BFD understands. This is how we get this information
4819 to the SOM BFD backend. */
4820 #ifdef obj_set_symbol_type
4821 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4824 /* Now that the type of the exported symbol has been handled,
4825 handle any argument relocation information. */
4826 while (!is_end_of_statement ())
4828 if (*input_line_pointer
== ',')
4829 input_line_pointer
++;
4830 name
= input_line_pointer
;
4831 c
= get_symbol_end ();
4832 /* Argument sources. */
4833 if ((strncasecmp (name
, "argw", 4) == 0))
4835 p
= input_line_pointer
;
4837 input_line_pointer
++;
4838 temp
= atoi (name
+ 4);
4839 name
= input_line_pointer
;
4840 c
= get_symbol_end ();
4841 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4842 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4843 *input_line_pointer
= c
;
4845 /* The return value. */
4846 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4848 p
= input_line_pointer
;
4850 input_line_pointer
++;
4851 name
= input_line_pointer
;
4852 c
= get_symbol_end ();
4853 arg_reloc
= pa_build_arg_reloc (name
);
4854 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4855 *input_line_pointer
= c
;
4857 /* Privelege level. */
4858 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4860 p
= input_line_pointer
;
4862 input_line_pointer
++;
4863 temp
= atoi (input_line_pointer
);
4864 c
= get_symbol_end ();
4865 *input_line_pointer
= c
;
4869 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4870 p
= input_line_pointer
;
4873 if (!is_end_of_statement ())
4874 input_line_pointer
++;
4878 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4879 assembly file must either be defined in the assembly file, or
4880 explicitly IMPORTED from another. */
4889 name
= input_line_pointer
;
4890 c
= get_symbol_end ();
4892 symbol
= symbol_find_or_make (name
);
4893 p
= input_line_pointer
;
4896 if (!is_end_of_statement ())
4898 input_line_pointer
++;
4899 pa_type_args (symbol
, 0);
4903 /* Sigh. To be compatable with the HP assembler and to help
4904 poorly written assembly code, we assign a type based on
4905 the the current segment. Note only BSF_FUNCTION really
4906 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4907 if (now_seg
== text_section
)
4908 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4910 /* If the section is undefined, then the symbol is undefined
4911 Since this is an import, leave the section undefined. */
4912 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4915 demand_empty_rest_of_line ();
4919 /* Handle a .LABEL pseudo-op. */
4927 name
= input_line_pointer
;
4928 c
= get_symbol_end ();
4930 if (strlen (name
) > 0)
4933 p
= input_line_pointer
;
4938 as_warn ("Missing label name on .LABEL");
4941 if (!is_end_of_statement ())
4943 as_warn ("extra .LABEL arguments ignored.");
4944 ignore_rest_of_line ();
4946 demand_empty_rest_of_line ();
4950 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4959 /* Handle a .ORIGIN pseudo-op. */
4966 pa_undefine_label ();
4970 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4971 is for static functions. FIXME. Should share more code with .EXPORT. */
4980 name
= input_line_pointer
;
4981 c
= get_symbol_end ();
4983 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4985 as_bad ("Cannot define static symbol: %s\n", name
);
4986 p
= input_line_pointer
;
4988 input_line_pointer
++;
4992 S_CLEAR_EXTERNAL (symbol
);
4993 p
= input_line_pointer
;
4995 if (!is_end_of_statement ())
4997 input_line_pointer
++;
4998 pa_type_args (symbol
, 0);
5002 demand_empty_rest_of_line ();
5006 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5007 of a procedure from a syntatical point of view. */
5013 struct call_info
*call_info
;
5015 if (within_procedure
)
5016 as_fatal ("Nested procedures");
5018 /* Reset global variables for new procedure. */
5019 callinfo_found
= FALSE
;
5020 within_procedure
= TRUE
;
5021 exit_processing_complete
= FALSE
;
5023 /* Create another call_info structure. */
5024 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
5027 as_fatal ("Cannot allocate unwind descriptor\n");
5029 bzero (call_info
, sizeof (struct call_info
));
5031 call_info
->ci_next
= NULL
;
5033 if (call_info_root
== NULL
)
5035 call_info_root
= call_info
;
5036 last_call_info
= call_info
;
5040 last_call_info
->ci_next
= call_info
;
5041 last_call_info
= call_info
;
5044 /* set up defaults on call_info structure */
5046 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5047 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5048 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5049 call_info
->entry_sr
= ~0;
5050 call_info
->makes_calls
= 1;
5052 /* If we got a .PROC pseudo-op, we know that the function is defined
5053 locally. Make sure it gets into the symbol table. */
5055 label_symbol_struct
*label_symbol
= pa_get_label ();
5059 if (label_symbol
->lss_label
)
5061 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5062 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5065 as_bad ("Missing function name for .PROC (corrupted label)");
5068 as_bad ("Missing function name for .PROC");
5071 demand_empty_rest_of_line ();
5075 /* Process the syntatical end of a procedure. Make sure all the
5076 appropriate pseudo-ops were found within the procedure. */
5083 if (!within_procedure
)
5084 as_bad ("misplaced .procend");
5086 if (!callinfo_found
)
5087 as_bad ("Missing .callinfo for this procedure");
5089 if (within_entry_exit
)
5090 as_bad ("Missing .EXIT for a .ENTRY");
5092 if (!exit_processing_complete
)
5095 within_procedure
= FALSE
;
5096 demand_empty_rest_of_line ();
5100 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5101 then create a new space entry to hold the information specified
5102 by the parameters to the .SPACE directive. */
5104 static sd_chain_struct
*
5105 pa_parse_space_stmt (space_name
, create_flag
)
5109 char *name
, *ptemp
, c
;
5110 char loadable
, defined
, private, sort
;
5112 asection
*seg
= NULL
;
5113 sd_chain_struct
*space
;
5115 /* load default values */
5121 if (strcasecmp (space_name
, "$TEXT$") == 0)
5123 seg
= pa_def_spaces
[0].segment
;
5124 sort
= pa_def_spaces
[0].sort
;
5126 else if (strcasecmp (space_name
, "$PRIVATE$") == 0)
5128 seg
= pa_def_spaces
[1].segment
;
5129 sort
= pa_def_spaces
[1].sort
;
5132 if (!is_end_of_statement ())
5134 print_errors
= FALSE
;
5135 ptemp
= input_line_pointer
+ 1;
5136 /* First see if the space was specified as a number rather than
5137 as a name. According to the PA assembly manual the rest of
5138 the line should be ignored. */
5139 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5140 input_line_pointer
= ptemp
;
5143 while (!is_end_of_statement ())
5145 input_line_pointer
++;
5146 name
= input_line_pointer
;
5147 c
= get_symbol_end ();
5148 if ((strncasecmp (name
, "SPNUM", 5) == 0))
5150 *input_line_pointer
= c
;
5151 input_line_pointer
++;
5152 spnum
= get_absolute_expression ();
5154 else if ((strncasecmp (name
, "SORT", 4) == 0))
5156 *input_line_pointer
= c
;
5157 input_line_pointer
++;
5158 sort
= get_absolute_expression ();
5160 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5162 *input_line_pointer
= c
;
5165 else if ((strncasecmp (name
, "NOTDEFINED", 10) == 0))
5167 *input_line_pointer
= c
;
5170 else if ((strncasecmp (name
, "PRIVATE", 7) == 0))
5172 *input_line_pointer
= c
;
5177 as_bad ("Invalid .SPACE argument");
5178 *input_line_pointer
= c
;
5179 if (! is_end_of_statement ())
5180 input_line_pointer
++;
5184 print_errors
= TRUE
;
5187 if (create_flag
&& seg
== NULL
)
5188 seg
= subseg_new (space_name
, 0);
5190 /* If create_flag is nonzero, then create the new space with
5191 the attributes computed above. Else set the values in
5192 an already existing space -- this can only happen for
5193 the first occurence of a built-in space. */
5195 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5196 private, sort
, seg
, 1);
5199 space
= is_defined_space (space_name
);
5200 SPACE_SPNUM (space
) = spnum
;
5201 SPACE_LOADABLE (space
) = loadable
& 1;
5202 SPACE_DEFINED (space
) = defined
& 1;
5203 SPACE_USER_DEFINED (space
) = 1;
5204 SPACE_PRIVATE (space
) = private & 1;
5205 SPACE_SORT (space
) = sort
& 0xff;
5206 space
->sd_seg
= seg
;
5209 #ifdef obj_set_section_attributes
5210 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5216 /* Adjust the frag's alignment according to the alignment needs
5217 of the given subspace/subsegment. */
5220 pa_align_subseg (seg
, subseg
)
5224 ssd_chain_struct
*now_subspace
;
5228 now_subspace
= pa_subsegment_to_subspace (seg
, subseg
);
5231 if (SUBSPACE_ALIGN (now_subspace
) == 0)
5232 alignment
= now_subspace
->ssd_last_align
;
5233 else if (now_subspace
->ssd_last_align
> SUBSPACE_ALIGN (now_subspace
))
5234 alignment
= now_subspace
->ssd_last_align
;
5236 alignment
= SUBSPACE_ALIGN (now_subspace
);
5238 while ((1 << shift
) < alignment
)
5242 shift
= bfd_get_section_alignment (stdoutput
, seg
);
5244 frag_align (shift
, 0);
5247 /* Handle a .SPACE pseudo-op; this switches the current space to the
5248 given space, creating the new space if necessary. */
5254 char *name
, c
, *space_name
, *save_s
;
5256 sd_chain_struct
*sd_chain
;
5258 if (within_procedure
)
5260 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5261 ignore_rest_of_line ();
5265 /* Check for some of the predefined spaces. FIXME: most of the code
5266 below is repeated several times, can we extract the common parts
5267 and place them into a subroutine or something similar? */
5268 if (strncasecmp (input_line_pointer
, "$text$", 6) == 0)
5270 input_line_pointer
+= 6;
5271 sd_chain
= is_defined_space ("$TEXT$");
5272 if (sd_chain
== NULL
)
5273 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5274 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5275 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5277 current_space
= sd_chain
;
5279 /* No need to align if we are already there. */
5280 if (now_seg
!= text_section
)
5281 pa_align_subseg (now_seg
, now_subseg
);
5283 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5286 = pa_subsegment_to_subspace (text_section
,
5287 sd_chain
->sd_last_subseg
);
5288 demand_empty_rest_of_line ();
5291 if (strncasecmp (input_line_pointer
, "$private$", 9) == 0)
5293 input_line_pointer
+= 9;
5294 sd_chain
= is_defined_space ("$PRIVATE$");
5295 if (sd_chain
== NULL
)
5296 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5297 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5298 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5300 current_space
= sd_chain
;
5302 /* No need to align if we are already there. */
5303 if (now_seg
!= data_section
)
5304 pa_align_subseg (now_seg
, now_subseg
);
5306 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5308 = pa_subsegment_to_subspace (data_section
,
5309 sd_chain
->sd_last_subseg
);
5310 demand_empty_rest_of_line ();
5313 if (!strncasecmp (input_line_pointer
,
5314 GDB_DEBUG_SPACE_NAME
,
5315 strlen (GDB_DEBUG_SPACE_NAME
)))
5317 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5318 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5319 if (sd_chain
== NULL
)
5320 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5321 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5322 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5324 current_space
= sd_chain
;
5327 asection
*gdb_section
5328 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5330 /* No need to align if we are already there. */
5331 if (strcmp (segment_name (now_seg
), GDB_DEBUG_SPACE_NAME
) != 0)
5332 pa_align_subseg (now_seg
, now_subseg
);
5334 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5336 = pa_subsegment_to_subspace (gdb_section
,
5337 sd_chain
->sd_last_subseg
);
5339 demand_empty_rest_of_line ();
5343 /* It could be a space specified by number. */
5345 save_s
= input_line_pointer
;
5346 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5348 if (sd_chain
= pa_find_space_by_number (temp
))
5350 current_space
= sd_chain
;
5352 if (now_seg
!= sd_chain
->sd_seg
)
5353 pa_align_subseg (now_seg
, now_subseg
);
5354 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5356 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5357 sd_chain
->sd_last_subseg
);
5358 demand_empty_rest_of_line ();
5363 /* Not a number, attempt to create a new space. */
5365 input_line_pointer
= save_s
;
5366 name
= input_line_pointer
;
5367 c
= get_symbol_end ();
5368 space_name
= xmalloc (strlen (name
) + 1);
5369 strcpy (space_name
, name
);
5370 *input_line_pointer
= c
;
5372 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5373 current_space
= sd_chain
;
5375 if (now_seg
!= sd_chain
->sd_seg
)
5376 pa_align_subseg (now_seg
, now_subseg
);
5377 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5378 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5379 sd_chain
->sd_last_subseg
);
5380 demand_empty_rest_of_line ();
5385 /* Switch to a new space. (I think). FIXME. */
5394 sd_chain_struct
*space
;
5396 name
= input_line_pointer
;
5397 c
= get_symbol_end ();
5398 space
= is_defined_space (name
);
5402 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5405 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5407 *input_line_pointer
= c
;
5408 demand_empty_rest_of_line ();
5412 /* If VALUE is an exact power of two between zero and 2^31, then
5413 return log2 (VALUE). Else return -1. */
5421 while ((1 << shift
) != value
&& shift
< 32)
5430 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5431 given subspace, creating the new subspace if necessary.
5433 FIXME. Should mirror pa_space more closely, in particular how
5434 they're broken up into subroutines. */
5437 pa_subspace (unused
)
5440 char *name
, *ss_name
, *alias
, c
;
5441 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5442 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5443 sd_chain_struct
*space
;
5444 ssd_chain_struct
*ssd
;
5447 if (within_procedure
)
5449 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5450 ignore_rest_of_line ();
5454 name
= input_line_pointer
;
5455 c
= get_symbol_end ();
5456 ss_name
= xmalloc (strlen (name
) + 1);
5457 strcpy (ss_name
, name
);
5458 *input_line_pointer
= c
;
5460 /* Load default values. */
5473 space
= current_space
;
5474 ssd
= is_defined_subspace (ss_name
);
5475 /* Allow user to override the builtin attributes of subspaces. But
5476 only allow the attributes to be changed once! */
5477 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5479 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5480 if (!is_end_of_statement ())
5481 as_warn ("Parameters of an existing subspace can\'t be modified");
5482 demand_empty_rest_of_line ();
5487 /* A new subspace. Load default values if it matches one of
5488 the builtin subspaces. */
5490 while (pa_def_subspaces
[i
].name
)
5492 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5494 loadable
= pa_def_subspaces
[i
].loadable
;
5495 common
= pa_def_subspaces
[i
].common
;
5496 dup_common
= pa_def_subspaces
[i
].dup_common
;
5497 code_only
= pa_def_subspaces
[i
].code_only
;
5498 zero
= pa_def_subspaces
[i
].zero
;
5499 space_index
= pa_def_subspaces
[i
].space_index
;
5500 alignment
= pa_def_subspaces
[i
].alignment
;
5501 quadrant
= pa_def_subspaces
[i
].quadrant
;
5502 access
= pa_def_subspaces
[i
].access
;
5503 sort
= pa_def_subspaces
[i
].sort
;
5504 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5505 alias
= pa_def_subspaces
[i
].alias
;
5512 /* We should be working with a new subspace now. Fill in
5513 any information as specified by the user. */
5514 if (!is_end_of_statement ())
5516 input_line_pointer
++;
5517 while (!is_end_of_statement ())
5519 name
= input_line_pointer
;
5520 c
= get_symbol_end ();
5521 if ((strncasecmp (name
, "QUAD", 4) == 0))
5523 *input_line_pointer
= c
;
5524 input_line_pointer
++;
5525 quadrant
= get_absolute_expression ();
5527 else if ((strncasecmp (name
, "ALIGN", 5) == 0))
5529 *input_line_pointer
= c
;
5530 input_line_pointer
++;
5531 alignment
= get_absolute_expression ();
5532 if (log2 (alignment
) == -1)
5534 as_bad ("Alignment must be a power of 2");
5538 else if ((strncasecmp (name
, "ACCESS", 6) == 0))
5540 *input_line_pointer
= c
;
5541 input_line_pointer
++;
5542 access
= get_absolute_expression ();
5544 else if ((strncasecmp (name
, "SORT", 4) == 0))
5546 *input_line_pointer
= c
;
5547 input_line_pointer
++;
5548 sort
= get_absolute_expression ();
5550 else if ((strncasecmp (name
, "CODE_ONLY", 9) == 0))
5552 *input_line_pointer
= c
;
5555 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5557 *input_line_pointer
= c
;
5560 else if ((strncasecmp (name
, "COMMON", 6) == 0))
5562 *input_line_pointer
= c
;
5565 else if ((strncasecmp (name
, "DUP_COMM", 8) == 0))
5567 *input_line_pointer
= c
;
5570 else if ((strncasecmp (name
, "ZERO", 4) == 0))
5572 *input_line_pointer
= c
;
5575 else if ((strncasecmp (name
, "FIRST", 5) == 0))
5576 as_bad ("FIRST not supported as a .SUBSPACE argument");
5578 as_bad ("Invalid .SUBSPACE argument");
5579 if (!is_end_of_statement ())
5580 input_line_pointer
++;
5584 /* Compute a reasonable set of BFD flags based on the information
5585 in the .subspace directive. */
5586 applicable
= bfd_applicable_section_flags (stdoutput
);
5589 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5592 if (common
|| dup_common
)
5593 flags
|= SEC_IS_COMMON
;
5595 /* This is a zero-filled subspace (eg BSS). */
5599 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5600 applicable
&= flags
;
5602 /* If this is an existing subspace, then we want to use the
5603 segment already associated with the subspace.
5605 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5606 lots of sections. It might be a problem in the PA ELF
5607 code, I do not know yet. For now avoid creating anything
5608 but the "standard" sections for ELF. */
5610 section
= ssd
->ssd_seg
;
5612 section
= subseg_new (alias
, 0);
5613 else if (! alias
&& USE_ALIASES
)
5615 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5616 demand_empty_rest_of_line ();
5620 section
= subseg_new (ss_name
, 0);
5622 /* Now set the flags. */
5623 bfd_set_section_flags (stdoutput
, section
, applicable
);
5625 /* Record any alignment request for this section. */
5626 record_alignment (section
, log2 (alignment
));
5628 /* Set the starting offset for this section. */
5629 bfd_set_section_vma (stdoutput
, section
,
5630 pa_subspace_start (space
, quadrant
));
5632 /* Now that all the flags are set, update an existing subspace,
5633 or create a new one. */
5636 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5637 code_only
, common
, dup_common
,
5638 sort
, zero
, access
, space_index
,
5639 alignment
, quadrant
,
5642 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5644 dup_common
, zero
, sort
,
5645 access
, space_index
,
5646 alignment
, quadrant
, section
);
5648 demand_empty_rest_of_line ();
5649 current_subspace
->ssd_seg
= section
;
5650 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5652 SUBSPACE_DEFINED (current_subspace
) = 1;
5657 /* Create default space and subspace dictionaries. */
5664 space_dict_root
= NULL
;
5665 space_dict_last
= NULL
;
5668 while (pa_def_spaces
[i
].name
)
5672 /* Pick the right name to use for the new section. */
5673 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5674 name
= pa_def_spaces
[i
].alias
;
5676 name
= pa_def_spaces
[i
].name
;
5678 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5679 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5680 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5681 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5682 pa_def_spaces
[i
].segment
, 0);
5687 while (pa_def_subspaces
[i
].name
)
5690 int applicable
, subsegment
;
5691 asection
*segment
= NULL
;
5692 sd_chain_struct
*space
;
5694 /* Pick the right name for the new section and pick the right
5695 subsegment number. */
5696 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5698 name
= pa_def_subspaces
[i
].alias
;
5699 subsegment
= pa_def_subspaces
[i
].subsegment
;
5703 name
= pa_def_subspaces
[i
].name
;
5707 /* Create the new section. */
5708 segment
= subseg_new (name
, subsegment
);
5711 /* For SOM we want to replace the standard .text, .data, and .bss
5712 sections with our own. */
5713 if (! strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && ! USE_ALIASES
)
5715 text_section
= segment
;
5716 applicable
= bfd_applicable_section_flags (stdoutput
);
5717 bfd_set_section_flags (stdoutput
, text_section
,
5718 applicable
& (SEC_ALLOC
| SEC_LOAD
5719 | SEC_RELOC
| SEC_CODE
5721 | SEC_HAS_CONTENTS
));
5723 else if (! strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && ! USE_ALIASES
)
5725 data_section
= segment
;
5726 applicable
= bfd_applicable_section_flags (stdoutput
);
5727 bfd_set_section_flags (stdoutput
, data_section
,
5728 applicable
& (SEC_ALLOC
| SEC_LOAD
5730 | SEC_HAS_CONTENTS
));
5734 else if (! strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && ! USE_ALIASES
)
5736 bss_section
= segment
;
5737 applicable
= bfd_applicable_section_flags (stdoutput
);
5738 bfd_set_section_flags (stdoutput
, bss_section
,
5739 applicable
& SEC_ALLOC
);
5742 /* Find the space associated with this subspace. */
5743 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5744 def_space_index
].segment
);
5747 as_fatal ("Internal error: Unable to find containing space for %s.",
5748 pa_def_subspaces
[i
].name
);
5751 create_new_subspace (space
, name
,
5752 pa_def_subspaces
[i
].loadable
,
5753 pa_def_subspaces
[i
].code_only
,
5754 pa_def_subspaces
[i
].common
,
5755 pa_def_subspaces
[i
].dup_common
,
5756 pa_def_subspaces
[i
].zero
,
5757 pa_def_subspaces
[i
].sort
,
5758 pa_def_subspaces
[i
].access
,
5759 pa_def_subspaces
[i
].space_index
,
5760 pa_def_subspaces
[i
].alignment
,
5761 pa_def_subspaces
[i
].quadrant
,
5769 /* Create a new space NAME, with the appropriate flags as defined
5770 by the given parameters.
5772 Add the new space to the space dictionary chain in numerical
5773 order as defined by the SORT entries. */
5775 static sd_chain_struct
*
5776 create_new_space (name
, spnum
, loadable
, defined
, private,
5777 sort
, seg
, user_defined
)
5787 sd_chain_struct
*chain_entry
;
5789 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5791 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5794 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5795 strcpy (SPACE_NAME (chain_entry
), name
);
5796 SPACE_NAME_INDEX (chain_entry
) = 0;
5797 SPACE_LOADABLE (chain_entry
) = loadable
;
5798 SPACE_DEFINED (chain_entry
) = defined
;
5799 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5800 SPACE_PRIVATE (chain_entry
) = private;
5801 SPACE_SPNUM (chain_entry
) = spnum
;
5802 SPACE_SORT (chain_entry
) = sort
;
5804 chain_entry
->sd_seg
= seg
;
5805 chain_entry
->sd_last_subseg
= -1;
5806 chain_entry
->sd_next
= NULL
;
5808 /* Find spot for the new space based on its sort key. */
5809 if (!space_dict_last
)
5810 space_dict_last
= chain_entry
;
5812 if (space_dict_root
== NULL
)
5813 space_dict_root
= chain_entry
;
5816 sd_chain_struct
*chain_pointer
;
5817 sd_chain_struct
*prev_chain_pointer
;
5819 chain_pointer
= space_dict_root
;
5820 prev_chain_pointer
= NULL
;
5822 while (chain_pointer
)
5824 if (SPACE_SORT (chain_pointer
) <= SPACE_SORT (chain_entry
))
5826 prev_chain_pointer
= chain_pointer
;
5827 chain_pointer
= chain_pointer
->sd_next
;
5833 /* At this point we've found the correct place to add the new
5834 entry. So add it and update the linked lists as appropriate. */
5835 if (prev_chain_pointer
)
5837 chain_entry
->sd_next
= chain_pointer
;
5838 prev_chain_pointer
->sd_next
= chain_entry
;
5842 space_dict_root
= chain_entry
;
5843 chain_entry
->sd_next
= chain_pointer
;
5846 if (chain_entry
->sd_next
== NULL
)
5847 space_dict_last
= chain_entry
;
5850 /* This is here to catch predefined spaces which do not get
5851 modified by the user's input. Another call is found at
5852 the bottom of pa_parse_space_stmt to handle cases where
5853 the user modifies a predefined space. */
5854 #ifdef obj_set_section_attributes
5855 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5861 /* Create a new subspace NAME, with the appropriate flags as defined
5862 by the given parameters.
5864 Add the new subspace to the subspace dictionary chain in numerical
5865 order as defined by the SORT entries. */
5867 static ssd_chain_struct
*
5868 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5869 dup_common
, is_zero
, sort
, access
, space_index
,
5870 alignment
, quadrant
, seg
)
5871 sd_chain_struct
*space
;
5873 char loadable
, code_only
, common
, dup_common
, is_zero
;
5881 ssd_chain_struct
*chain_entry
;
5883 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5885 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5887 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5888 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5890 SUBSPACE_ACCESS (chain_entry
) = access
;
5891 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5892 SUBSPACE_COMMON (chain_entry
) = common
;
5893 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5894 SUBSPACE_SORT (chain_entry
) = sort
;
5895 SUBSPACE_CODE_ONLY (chain_entry
) = code_only
;
5896 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5897 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5898 SUBSPACE_SUBSPACE_START (chain_entry
) = pa_subspace_start (space
, quadrant
);
5899 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5900 SUBSPACE_ZERO (chain_entry
) = is_zero
;
5902 /* Initialize subspace_defined. When we hit a .subspace directive
5903 we'll set it to 1 which "locks-in" the subspace attributes. */
5904 SUBSPACE_DEFINED (chain_entry
) = 0;
5906 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5907 chain_entry
->ssd_seg
= seg
;
5908 chain_entry
->ssd_last_align
= 1;
5909 chain_entry
->ssd_next
= NULL
;
5911 /* Find spot for the new subspace based on its sort key. */
5912 if (space
->sd_subspaces
== NULL
)
5913 space
->sd_subspaces
= chain_entry
;
5916 ssd_chain_struct
*chain_pointer
;
5917 ssd_chain_struct
*prev_chain_pointer
;
5919 chain_pointer
= space
->sd_subspaces
;
5920 prev_chain_pointer
= NULL
;
5922 while (chain_pointer
)
5924 if (SUBSPACE_SORT (chain_pointer
) <= SUBSPACE_SORT (chain_entry
))
5926 prev_chain_pointer
= chain_pointer
;
5927 chain_pointer
= chain_pointer
->ssd_next
;
5934 /* Now we have somewhere to put the new entry. Insert it and update
5936 if (prev_chain_pointer
)
5938 chain_entry
->ssd_next
= chain_pointer
;
5939 prev_chain_pointer
->ssd_next
= chain_entry
;
5943 space
->sd_subspaces
= chain_entry
;
5944 chain_entry
->ssd_next
= chain_pointer
;
5948 #ifdef obj_set_subsection_attributes
5949 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5957 /* Update the information for the given subspace based upon the
5958 various arguments. Return the modified subspace chain entry. */
5960 static ssd_chain_struct
*
5961 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5962 zero
, access
, space_index
, alignment
, quadrant
, section
)
5963 sd_chain_struct
*space
;
5977 ssd_chain_struct
*chain_entry
;
5979 if ((chain_entry
= is_defined_subspace (name
)))
5981 SUBSPACE_ACCESS (chain_entry
) = access
;
5982 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
5983 SUBSPACE_COMMON (chain_entry
) = common
;
5984 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
5985 SUBSPACE_CODE_ONLY (chain_entry
) = 1;
5986 SUBSPACE_SORT (chain_entry
) = sort
;
5987 SUBSPACE_ALIGN (chain_entry
) = alignment
;
5988 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
5989 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
5990 SUBSPACE_ZERO (chain_entry
) = zero
;
5995 #ifdef obj_set_subsection_attributes
5996 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
6004 /* Return the space chain entry for the space with the name NAME or
6005 NULL if no such space exists. */
6007 static sd_chain_struct
*
6008 is_defined_space (name
)
6011 sd_chain_struct
*chain_pointer
;
6013 for (chain_pointer
= space_dict_root
;
6015 chain_pointer
= chain_pointer
->sd_next
)
6017 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
6018 return chain_pointer
;
6021 /* No mapping from segment to space was found. Return NULL. */
6025 /* Find and return the space associated with the given seg. If no mapping
6026 from the given seg to a space is found, then return NULL.
6028 Unlike subspaces, the number of spaces is not expected to grow much,
6029 so a linear exhaustive search is OK here. */
6031 static sd_chain_struct
*
6032 pa_segment_to_space (seg
)
6035 sd_chain_struct
*space_chain
;
6037 /* Walk through each space looking for the correct mapping. */
6038 for (space_chain
= space_dict_root
;
6040 space_chain
= space_chain
->sd_next
)
6042 if (space_chain
->sd_seg
== seg
)
6046 /* Mapping was not found. Return NULL. */
6050 /* Return the space chain entry for the subspace with the name NAME or
6051 NULL if no such subspace exists.
6053 Uses a linear search through all the spaces and subspaces, this may
6054 not be appropriate if we ever being placing each function in its
6057 static ssd_chain_struct
*
6058 is_defined_subspace (name
)
6061 sd_chain_struct
*space_chain
;
6062 ssd_chain_struct
*subspace_chain
;
6064 /* Walk through each space. */
6065 for (space_chain
= space_dict_root
;
6067 space_chain
= space_chain
->sd_next
)
6069 /* Walk through each subspace looking for a name which matches. */
6070 for (subspace_chain
= space_chain
->sd_subspaces
;
6072 subspace_chain
= subspace_chain
->ssd_next
)
6073 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
6074 return subspace_chain
;
6077 /* Subspace wasn't found. Return NULL. */
6081 /* Find and return the subspace associated with the given seg. If no
6082 mapping from the given seg to a subspace is found, then return NULL.
6084 If we ever put each procedure/function within its own subspace
6085 (to make life easier on the compiler and linker), then this will have
6086 to become more efficient. */
6088 static ssd_chain_struct
*
6089 pa_subsegment_to_subspace (seg
, subseg
)
6093 sd_chain_struct
*space_chain
;
6094 ssd_chain_struct
*subspace_chain
;
6096 /* Walk through each space. */
6097 for (space_chain
= space_dict_root
;
6099 space_chain
= space_chain
->sd_next
)
6101 if (space_chain
->sd_seg
== seg
)
6103 /* Walk through each subspace within each space looking for
6104 the correct mapping. */
6105 for (subspace_chain
= space_chain
->sd_subspaces
;
6107 subspace_chain
= subspace_chain
->ssd_next
)
6108 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6109 return subspace_chain
;
6113 /* No mapping from subsegment to subspace found. Return NULL. */
6117 /* Given a number, try and find a space with the name number.
6119 Return a pointer to a space dictionary chain entry for the space
6120 that was found or NULL on failure. */
6122 static sd_chain_struct
*
6123 pa_find_space_by_number (number
)
6126 sd_chain_struct
*space_chain
;
6128 for (space_chain
= space_dict_root
;
6130 space_chain
= space_chain
->sd_next
)
6132 if (SPACE_SPNUM (space_chain
) == number
)
6136 /* No appropriate space found. Return NULL. */
6140 /* Return the starting address for the given subspace. If the starting
6141 address is unknown then return zero. */
6144 pa_subspace_start (space
, quadrant
)
6145 sd_chain_struct
*space
;
6148 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6149 is not correct for the PA OSF1 port. */
6150 if ((strcasecmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6152 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6158 /* FIXME. Needs documentation. */
6160 pa_next_subseg (space
)
6161 sd_chain_struct
*space
;
6164 space
->sd_last_subseg
++;
6165 return space
->sd_last_subseg
;
6168 /* Helper function for pa_stringer. Used to find the end of
6175 unsigned int c
= *s
& CHAR_MASK
;
6187 /* Handle a .STRING type pseudo-op. */
6190 pa_stringer (append_zero
)
6193 char *s
, num_buf
[4];
6197 /* Preprocess the string to handle PA-specific escape sequences.
6198 For example, \xDD where DD is a hexidecimal number should be
6199 changed to \OOO where OOO is an octal number. */
6201 /* Skip the opening quote. */
6202 s
= input_line_pointer
+ 1;
6204 while (is_a_char (c
= pa_stringer_aux (s
++)))
6211 /* Handle \x<num>. */
6214 unsigned int number
;
6219 /* Get pas the 'x'. */
6221 for (num_digit
= 0, number
= 0, dg
= *s
;
6223 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6224 || (dg
>= 'A' && dg
<= 'F'));
6228 number
= number
* 16 + dg
- '0';
6229 else if (dg
>= 'a' && dg
<= 'f')
6230 number
= number
* 16 + dg
- 'a' + 10;
6232 number
= number
* 16 + dg
- 'A' + 10;
6242 sprintf (num_buf
, "%02o", number
);
6245 sprintf (num_buf
, "%03o", number
);
6248 for (i
= 0; i
<= num_digit
; i
++)
6249 s_start
[i
] = num_buf
[i
];
6253 /* This might be a "\"", skip over the escaped char. */
6260 stringer (append_zero
);
6261 pa_undefine_label ();
6264 /* Handle a .VERSION pseudo-op. */
6271 pa_undefine_label ();
6274 /* Just like a normal cons, but when finished we have to undefine
6275 the latest space label. */
6282 pa_undefine_label ();
6285 /* Switch to the data space. As usual delete our label. */
6292 pa_undefine_label ();
6295 /* FIXME. What's the purpose of this pseudo-op? */
6301 pa_undefine_label ();
6304 /* Like float_cons, but we need to undefine our label. */
6307 pa_float_cons (float_type
)
6310 float_cons (float_type
);
6311 pa_undefine_label ();
6314 /* Like s_fill, but delete our label when finished. */
6321 pa_undefine_label ();
6324 /* Like lcomm, but delete our label when finished. */
6327 pa_lcomm (needs_align
)
6330 s_lcomm (needs_align
);
6331 pa_undefine_label ();
6334 /* Like lsym, but delete our label when finished. */
6341 pa_undefine_label ();
6344 /* Switch to the text space. Like s_text, but delete our
6345 label when finished. */
6351 pa_undefine_label ();
6354 /* On the PA relocations which involve function symbols must not be
6355 adjusted. This so that the linker can know when/how to create argument
6356 relocation stubs for indirect calls and calls to static functions.
6358 FIXME. Also reject R_HPPA relocations which are 32 bits
6359 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6360 needs to generate relocations to push the addend and symbol value
6361 onto the stack, add them, then pop the value off the stack and
6362 use it in a relocation -- yuk. */
6365 hppa_fix_adjustable (fixp
)
6368 struct hppa_fix_struct
*hppa_fix
;
6370 hppa_fix
= fixp
->tc_fix_data
;
6372 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6375 if (fixp
->fx_addsy
== 0
6376 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6382 /* Now for some ELF specific code. FIXME. */
6384 static symext_chainS
*symext_rootP
;
6385 static symext_chainS
*symext_lastP
;
6387 /* Do any symbol processing requested by the target-cpu or target-format. */
6390 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6392 elf_symbol_type
*symbolP
;
6395 symext_chainS
*symextP
;
6396 unsigned int arg_reloc
;
6398 /* Only functions can have argument relocations. */
6399 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6402 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6404 /* If there are no argument relocation bits, then no relocation is
6405 necessary. Do not add this to the symextn section. */
6409 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6411 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6412 symextP
[0].next
= &symextP
[1];
6414 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6415 symextP
[1].next
= NULL
;
6417 if (symext_rootP
== NULL
)
6419 symext_rootP
= &symextP
[0];
6420 symext_lastP
= &symextP
[1];
6424 symext_lastP
->next
= &symextP
[0];
6425 symext_lastP
= &symextP
[1];
6429 /* Make sections needed by the target cpu and/or target format. */
6431 hppa_tc_make_sections (abfd
)
6434 symext_chainS
*symextP
;
6436 asection
*symextn_sec
;
6437 segT save_seg
= now_seg
;
6438 subsegT save_subseg
= now_subseg
;
6440 /* Build the symbol extension section. */
6441 hppa_tc_make_symextn_section ();
6443 /* Force some calculation to occur. */
6444 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6446 hppa_elf_stub_finish (abfd
);
6448 /* If no symbols for the symbol extension section, then stop now. */
6449 if (symext_rootP
== NULL
)
6452 /* Count the number of symbols for the symbol extension section. */
6453 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6456 size
= sizeof (symext_entryS
) * n
;
6458 /* Switch to the symbol extension section. */
6459 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6461 frag_wane (frag_now
);
6464 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6467 int *symtab_map
= elf_sym_extra (abfd
);
6470 /* First, patch the symbol extension record to reflect the true
6471 symbol table index. */
6473 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6475 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6476 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6480 ptr
= frag_more (sizeof (symextP
->entry
));
6481 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6484 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6485 frag_wane (frag_now
);
6487 /* Switch back to the original segment. */
6488 subseg_set (save_seg
, save_subseg
);
6493 /* Make the symbol extension section. */
6496 hppa_tc_make_symextn_section ()
6500 symext_chainS
*symextP
;
6504 segT save_seg
= now_seg
;
6505 subsegT save_subseg
= now_subseg
;
6507 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6510 size
= sizeof (symext_entryS
) * n
;
6512 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6514 bfd_set_section_flags (stdoutput
, symextn_sec
,
6515 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6516 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6518 /* Now, switch back to the original segment. */
6519 subseg_set (save_seg
, save_subseg
);
6523 /* Build the symbol extension section. */
6526 pa_build_symextn_section ()
6529 asection
*save_seg
= now_seg
;
6530 subsegT subseg
= (subsegT
) 0;
6531 subsegT save_subseg
= now_subseg
;
6533 seg
= subseg_new (".hppa_symextn", subseg
);
6534 bfd_set_section_flags (stdoutput
,
6536 SEC_HAS_CONTENTS
| SEC_READONLY
6537 | SEC_ALLOC
| SEC_LOAD
);
6539 subseg_set (save_seg
, save_subseg
);
6543 /* For ELF, this function serves one purpose: to setup the st_size
6544 field of STT_FUNC symbols. To do this, we need to scan the
6545 call_info structure list, determining st_size in one of two possible
6548 1. call_info->start_frag->fr_fix has the size of the fragment.
6549 This approach assumes that the function was built into a
6550 single fragment. This works for most cases, but might fail.
6551 For example, if there was a segment change in the middle of
6554 2. The st_size field is the difference in the addresses of the
6555 call_info->start_frag->fr_address field and the fr_address
6556 field of the next fragment with fr_type == rs_fill and
6560 elf_hppa_final_processing ()
6562 struct call_info
*call_info_pointer
;
6564 for (call_info_pointer
= call_info_root
;
6566 call_info_pointer
= call_info_pointer
->ci_next
)
6568 elf_symbol_type
*esym
6569 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6570 esym
->internal_elf_sym
.st_size
=
6571 S_GET_VALUE (call_info_pointer
->end_symbol
)
6572 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;