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 ((char *));
549 static int evaluate_absolute
PARAMS ((expressionS
, int));
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_export_args
PARAMS ((symbolS
*));
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 #define is_DP_relative(exp) \
1194 ((exp).X_op == O_subtract \
1195 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1197 #define is_PC_relative(exp) \
1198 ((exp).X_op == O_subtract \
1199 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1201 #define is_complex(exp) \
1202 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1204 /* Actual functions to implement the PA specific code for the assembler. */
1206 /* Returns a pointer to the label_symbol_struct for the current space.
1207 or NULL if no label_symbol_struct exists for the current space. */
1209 static label_symbol_struct
*
1212 label_symbol_struct
*label_chain
;
1213 sd_chain_struct
*space_chain
= current_space
;
1215 for (label_chain
= label_symbols_rootp
;
1217 label_chain
= label_chain
->lss_next
)
1218 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1224 /* Defines a label for the current space. If one is already defined,
1225 this function will replace it with the new label. */
1228 pa_define_label (symbol
)
1231 label_symbol_struct
*label_chain
= pa_get_label ();
1232 sd_chain_struct
*space_chain
= current_space
;
1235 label_chain
->lss_label
= symbol
;
1238 /* Create a new label entry and add it to the head of the chain. */
1240 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1241 label_chain
->lss_label
= symbol
;
1242 label_chain
->lss_space
= space_chain
;
1243 label_chain
->lss_next
= NULL
;
1245 if (label_symbols_rootp
)
1246 label_chain
->lss_next
= label_symbols_rootp
;
1248 label_symbols_rootp
= label_chain
;
1252 /* Removes a label definition for the current space.
1253 If there is no label_symbol_struct entry, then no action is taken. */
1256 pa_undefine_label ()
1258 label_symbol_struct
*label_chain
;
1259 label_symbol_struct
*prev_label_chain
= NULL
;
1260 sd_chain_struct
*space_chain
= current_space
;
1262 for (label_chain
= label_symbols_rootp
;
1264 label_chain
= label_chain
->lss_next
)
1266 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1268 /* Remove the label from the chain and free its memory. */
1269 if (prev_label_chain
)
1270 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1272 label_symbols_rootp
= label_chain
->lss_next
;
1277 prev_label_chain
= label_chain
;
1282 /* An HPPA-specific version of fix_new. This is required because the HPPA
1283 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1284 results in the creation of an instance of an hppa_fix_struct. An
1285 hppa_fix_struct stores the extra information along with a pointer to the
1286 original fixS. This is attached to the original fixup via the
1287 tc_fix_data field. */
1290 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1291 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1295 symbolS
*add_symbol
;
1299 bfd_reloc_code_real_type r_type
;
1307 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1308 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1311 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1313 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1314 new_fix
->tc_fix_data
= hppa_fix
;
1315 hppa_fix
->fx_r_type
= r_type
;
1316 hppa_fix
->fx_r_field
= r_field
;
1317 hppa_fix
->fx_r_format
= r_format
;
1318 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1321 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1323 /* If necessary call BFD backend function to attach the
1324 unwind bits to the target dependent parts of a BFD symbol.
1326 #ifdef obj_attach_unwind_info
1327 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1332 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1333 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1336 parse_cons_expression_hppa (exp
)
1339 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1343 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1344 hppa_field_selector is set by the parse_cons_expression_hppa. */
1347 cons_fix_new_hppa (frag
, where
, size
, exp
)
1353 unsigned int reloc_type
;
1355 if (is_DP_relative (*exp
))
1356 reloc_type
= R_HPPA_GOTOFF
;
1357 else if (is_complex (*exp
))
1358 reloc_type
= R_HPPA_COMPLEX
;
1360 reloc_type
= R_HPPA
;
1362 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1363 as_warn ("Invalid field selector. Assuming F%%.");
1365 fix_new_hppa (frag
, where
, size
,
1366 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, reloc_type
,
1367 hppa_field_selector
, 32, 0, (char *) 0);
1369 /* Reset field selector to its default state. */
1370 hppa_field_selector
= 0;
1373 /* This function is called once, at assembler startup time. It should
1374 set up all the tables, etc. that the MD part of the assembler will need. */
1379 const char *retval
= NULL
;
1383 last_call_info
= NULL
;
1384 call_info_root
= NULL
;
1386 /* Folding of text and data segments fails miserably on the PA.
1387 Warn user and disable "-R" option. */
1390 as_warn ("-R option not supported on this target.");
1391 flag_readonly_data_in_text
= 0;
1397 op_hash
= hash_new ();
1398 if (op_hash
== NULL
)
1399 as_fatal ("Virtual memory exhausted");
1401 while (i
< NUMOPCODES
)
1403 const char *name
= pa_opcodes
[i
].name
;
1404 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*)&pa_opcodes
[i
]);
1405 if (retval
!= NULL
&& *retval
!= '\0')
1407 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1412 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1413 != pa_opcodes
[i
].match
)
1415 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1416 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1421 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1425 as_fatal ("Broken assembler. No assembly attempted.");
1427 /* SOM will change text_section. To make sure we never put
1428 anything into the old one switch to the new one now. */
1429 subseg_set (text_section
, 0);
1432 /* Called at the end of assembling a source file. Nothing to do
1433 at this point on the PA. */
1441 /* Assemble a single instruction storing it into a frag. */
1448 /* The had better be something to assemble. */
1451 /* Assemble the instruction. Results are saved into "the_insn". */
1454 /* Get somewhere to put the assembled instrution. */
1457 /* Output the opcode. */
1458 md_number_to_chars (to
, the_insn
.opcode
, 4);
1460 /* If necessary output more stuff. */
1461 if (the_insn
.reloc
!= R_HPPA_NONE
)
1462 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1463 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1464 the_insn
.reloc
, the_insn
.field_selector
,
1465 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1469 /* Do the real work for assembling a single instruction. Store results
1470 into the global "the_insn" variable.
1472 FIXME: Should define and use some functions/macros to handle
1473 various common insertions of information into the opcode. */
1479 char *error_message
= "";
1480 char *s
, c
, *argstart
, *name
, *save_s
;
1484 int reg
, s2
, s3
, m
, a
, uu
, cmpltr
, nullif
, flag
, sfu
, cond
;
1485 unsigned int im21
, im14
, im11
, im5
;
1486 unsigned long i
, opcode
;
1487 struct pa_opcode
*insn
;
1489 /* Skip to something interesting. */
1490 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1509 as_bad ("Unknown opcode: `%s'", str
);
1515 /* Convert everything into lower case. */
1518 if (isupper (*save_s
))
1519 *save_s
= tolower (*save_s
);
1523 /* Look up the opcode in the has table. */
1524 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1526 as_bad ("Unknown opcode: `%s'", str
);
1535 /* Mark the location where arguments for the instruction start, then
1536 start processing them. */
1540 /* Do some initialization. */
1541 opcode
= insn
->match
;
1542 bzero (&the_insn
, sizeof (the_insn
));
1544 the_insn
.reloc
= R_HPPA_NONE
;
1546 /* Build the opcode, checking as we go to make
1547 sure that the operands match. */
1548 for (args
= insn
->args
;; ++args
)
1553 /* End of arguments. */
1569 /* These must match exactly. */
1578 /* Handle a 5 bit register or control register field at 10. */
1581 reg
= pa_parse_number (&s
, 0);
1582 if (reg
< 32 && reg
>= 0)
1584 opcode
|= reg
<< 21;
1589 /* Handle a 5 bit register field at 15. */
1591 reg
= pa_parse_number (&s
, 0);
1592 if (reg
< 32 && reg
>= 0)
1594 opcode
|= reg
<< 16;
1599 /* Handle a 5 bit register field at 31. */
1602 reg
= pa_parse_number (&s
, 0);
1603 if (reg
< 32 && reg
>= 0)
1610 /* Handle a 5 bit field length at 31. */
1612 pa_get_absolute_expression (s
);
1613 if (the_insn
.exp
.X_op
== O_constant
)
1615 reg
= the_insn
.exp
.X_add_number
;
1616 if (reg
<= 32 && reg
> 0)
1625 /* Handle a 5 bit immediate at 15. */
1627 pa_get_absolute_expression (s
);
1628 if (the_insn
.exp
.X_add_number
> 15)
1630 as_bad ("5 bit immediate > 15. Set to 15");
1631 the_insn
.exp
.X_add_number
= 15;
1633 else if (the_insn
.exp
.X_add_number
< -16)
1635 as_bad ("5 bit immediate < -16. Set to -16");
1636 the_insn
.exp
.X_add_number
= -16;
1639 low_sign_unext (evaluate_absolute (the_insn
.exp
,
1640 the_insn
.field_selector
),
1642 opcode
|= (im5
<< 16);
1646 /* Handle a 2 bit space identifier at 17. */
1648 s2
= pa_parse_number (&s
, 0);
1649 if (s2
< 4 && s2
>= 0)
1656 /* Handle a 3 bit space identifier at 18. */
1658 s3
= pa_parse_number (&s
, 0);
1659 if (s3
< 8 && s3
>= 0)
1661 dis_assemble_3 (s3
, &s3
);
1667 /* Handle a completer for an indexing load or store. */
1672 while (*s
== ',' && i
< 2)
1675 if (strncasecmp (s
, "sm", 2) == 0)
1682 else if (strncasecmp (s
, "m", 1) == 0)
1684 else if (strncasecmp (s
, "s", 1) == 0)
1687 as_bad ("Invalid Indexed Load Completer.");
1692 as_bad ("Invalid Indexed Load Completer Syntax.");
1693 while (*s
== ' ' || *s
== '\t')
1700 /* Handle a short load/store completer. */
1707 if (strncasecmp (s
, "ma", 2) == 0)
1712 else if (strncasecmp (s
, "mb", 2) == 0)
1718 as_bad ("Invalid Short Load/Store Completer.");
1721 while (*s
== ' ' || *s
== '\t')
1727 /* Handle a stbys completer. */
1732 while (*s
== ',' && i
< 2)
1735 if (strncasecmp (s
, "m", 1) == 0)
1737 else if (strncasecmp (s
, "b", 1) == 0)
1739 else if (strncasecmp (s
, "e", 1) == 0)
1742 as_bad ("Invalid Store Bytes Short Completer");
1747 as_bad ("Invalid Store Bytes Short Completer");
1748 while (*s
== ' ' || *s
== '\t')
1754 /* Handle a non-negated compare/stubtract condition. */
1756 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1759 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1762 opcode
|= cmpltr
<< 13;
1765 /* Handle a negated or non-negated compare/subtract condition. */
1768 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1772 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1775 as_bad ("Invalid Compare/Subtract Condition.");
1780 /* Negated condition requires an opcode change. */
1784 opcode
|= cmpltr
<< 13;
1787 /* Handle a negated or non-negated add condition. */
1790 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1794 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1797 as_bad ("Invalid Compare/Subtract Condition");
1802 /* Negated condition requires an opcode change. */
1806 opcode
|= cmpltr
<< 13;
1809 /* Handle a compare/subtract condition. */
1816 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1821 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1824 as_bad ("Invalid Compare/Subtract Condition");
1828 opcode
|= cmpltr
<< 13;
1829 opcode
|= flag
<< 12;
1832 /* Handle a non-negated add condition. */
1841 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1845 if (strcmp (name
, "=") == 0)
1847 else if (strcmp (name
, "<") == 0)
1849 else if (strcmp (name
, "<=") == 0)
1851 else if (strcasecmp (name
, "nuv") == 0)
1853 else if (strcasecmp (name
, "znv") == 0)
1855 else if (strcasecmp (name
, "sv") == 0)
1857 else if (strcasecmp (name
, "od") == 0)
1859 else if (strcasecmp (name
, "n") == 0)
1861 else if (strcasecmp (name
, "tr") == 0)
1866 else if (strcasecmp (name
, "<>") == 0)
1871 else if (strcasecmp (name
, ">=") == 0)
1876 else if (strcasecmp (name
, ">") == 0)
1881 else if (strcasecmp (name
, "uv") == 0)
1886 else if (strcasecmp (name
, "vnz") == 0)
1891 else if (strcasecmp (name
, "nsv") == 0)
1896 else if (strcasecmp (name
, "ev") == 0)
1902 as_bad ("Invalid Add Condition: %s", name
);
1905 nullif
= pa_parse_nullif (&s
);
1906 opcode
|= nullif
<< 1;
1907 opcode
|= cmpltr
<< 13;
1908 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 opcode
|= flag
<< 12;
1964 /* Handle a unit instruction condition. */
1971 if (strncasecmp (s
, "sbz", 3) == 0)
1976 else if (strncasecmp (s
, "shz", 3) == 0)
1981 else if (strncasecmp (s
, "sdc", 3) == 0)
1986 else if (strncasecmp (s
, "sbc", 3) == 0)
1991 else if (strncasecmp (s
, "shc", 3) == 0)
1996 else if (strncasecmp (s
, "tr", 2) == 0)
2002 else if (strncasecmp (s
, "nbz", 3) == 0)
2008 else if (strncasecmp (s
, "nhz", 3) == 0)
2014 else if (strncasecmp (s
, "ndc", 3) == 0)
2020 else if (strncasecmp (s
, "nbc", 3) == 0)
2026 else if (strncasecmp (s
, "nhc", 3) == 0)
2033 as_bad ("Invalid Logical Instruction Condition.");
2035 opcode
|= cmpltr
<< 13;
2036 opcode
|= flag
<< 12;
2039 /* Handle a shift/extract/deposit condition. */
2047 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
2051 if (strcmp (name
, "=") == 0)
2053 else if (strcmp (name
, "<") == 0)
2055 else if (strcasecmp (name
, "od") == 0)
2057 else if (strcasecmp (name
, "tr") == 0)
2059 else if (strcmp (name
, "<>") == 0)
2061 else if (strcmp (name
, ">=") == 0)
2063 else if (strcasecmp (name
, "ev") == 0)
2065 /* Handle movb,n. Put things back the way they were.
2066 This includes moving s back to where it started. */
2067 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
2074 as_bad ("Invalid Shift/Extract/Deposit Condition.");
2077 opcode
|= cmpltr
<< 13;
2080 /* Handle bvb and bb conditions. */
2086 if (strncmp (s
, "<", 1) == 0)
2091 else if (strncmp (s
, ">=", 2) == 0)
2097 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2099 opcode
|= cmpltr
<< 13;
2102 /* Handle a 5 bit immediate at 31. */
2105 low_sign_unext (evaluate_absolute (the_insn
.exp
,
2106 the_insn
.field_selector
),
2112 /* Handle an unsigned 5 bit immediate at 31. */
2115 im5
= evaluate_absolute (the_insn
.exp
, the_insn
.field_selector
);
2118 as_bad ("Operand out of range. Was: %d. Should be [0..31].",
2126 /* Handle an unsigned 5 bit immediate at 15. */
2129 im5
= evaluate_absolute (the_insn
.exp
, the_insn
.field_selector
);
2132 as_bad ("Operand out of range. Was: %d. Should be [0..31].",
2136 opcode
|= im5
<< 16;
2140 /* Handle a 11 bit immediate at 31. */
2142 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2144 if (the_insn
.exp
.X_op
== O_constant
)
2146 low_sign_unext (evaluate_absolute (the_insn
.exp
,
2147 the_insn
.field_selector
),
2153 if (is_DP_relative (the_insn
.exp
))
2154 the_insn
.reloc
= R_HPPA_GOTOFF
;
2155 else if (is_PC_relative (the_insn
.exp
))
2156 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2157 else if (is_complex (the_insn
.exp
))
2158 the_insn
.reloc
= R_HPPA_COMPLEX
;
2160 the_insn
.reloc
= R_HPPA
;
2161 the_insn
.format
= 11;
2166 /* Handle a 14 bit immediate at 31. */
2168 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2170 if (the_insn
.exp
.X_op
== O_constant
)
2172 low_sign_unext (evaluate_absolute (the_insn
.exp
,
2173 the_insn
.field_selector
),
2175 if (the_insn
.field_selector
== e_rsel
)
2176 opcode
|= (im14
& 0xfff);
2182 if (is_DP_relative (the_insn
.exp
))
2183 the_insn
.reloc
= R_HPPA_GOTOFF
;
2184 else if (is_PC_relative (the_insn
.exp
))
2185 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2186 else if (is_complex (the_insn
.exp
))
2187 the_insn
.reloc
= R_HPPA_COMPLEX
;
2189 the_insn
.reloc
= R_HPPA
;
2190 the_insn
.format
= 14;
2195 /* Handle a 21 bit immediate at 31. */
2197 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2199 if (the_insn
.exp
.X_op
== O_constant
)
2201 dis_assemble_21 (evaluate_absolute (the_insn
.exp
,
2202 the_insn
.field_selector
),
2208 if (is_DP_relative (the_insn
.exp
))
2209 the_insn
.reloc
= R_HPPA_GOTOFF
;
2210 else if (is_PC_relative (the_insn
.exp
))
2211 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2212 else if (is_complex (the_insn
.exp
))
2213 the_insn
.reloc
= R_HPPA_COMPLEX
;
2215 the_insn
.reloc
= R_HPPA
;
2216 the_insn
.format
= 21;
2221 /* Handle a nullification completer for branch instructions. */
2223 nullif
= pa_parse_nullif (&s
);
2224 opcode
|= nullif
<< 1;
2227 /* Handle a 12 bit branch displacement. */
2229 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2232 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L0\001"))
2234 unsigned int w1
, w
, result
;
2236 sign_unext ((the_insn
.exp
.X_add_number
- 8) >> 2, 12,
2238 dis_assemble_12 (result
, &w1
, &w
);
2239 opcode
|= ((w1
<< 2) | w
);
2243 if (is_complex (the_insn
.exp
))
2244 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2246 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2247 the_insn
.format
= 12;
2248 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2249 bzero (&last_call_desc
, sizeof (struct call_desc
));
2254 /* Handle a 17 bit branch displacement. */
2256 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2259 if (the_insn
.exp
.X_add_symbol
)
2261 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2264 unsigned int w2
, w1
, w
, result
;
2266 sign_unext ((the_insn
.exp
.X_add_number
- 8) >> 2, 17,
2268 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2269 opcode
|= ((w2
<< 2) | (w1
<< 16) | w
);
2273 if (is_complex (the_insn
.exp
))
2274 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2276 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2277 the_insn
.format
= 17;
2278 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2279 bzero (&last_call_desc
, sizeof (struct call_desc
));
2284 unsigned int w2
, w1
, w
, result
;
2286 sign_unext (the_insn
.exp
.X_add_number
>> 2, 17, &result
);
2287 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2288 opcode
|= ((w2
<< 2) | (w1
<< 16) | w
);
2293 /* Handle an absolute 17 bit branch target. */
2295 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2298 if (the_insn
.exp
.X_add_symbol
)
2300 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2303 unsigned int w2
, w1
, w
, result
;
2305 sign_unext ((the_insn
.exp
.X_add_number
- 8) >> 2, 17,
2307 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2308 opcode
|= ((w2
<< 2) | (w1
<< 16) | w
);
2312 if (is_complex (the_insn
.exp
))
2313 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2315 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2316 the_insn
.format
= 17;
2321 unsigned int w2
, w1
, w
, result
;
2323 result
= evaluate_absolute (the_insn
.exp
,
2324 the_insn
.field_selector
);
2325 sign_unext (result
>> 2, 17, &result
);
2326 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2327 opcode
|= ((w2
<< 2) | (w1
<< 16) | w
);
2332 /* Handle a 5 bit shift count at 26. */
2335 if (the_insn
.exp
.X_op
== O_constant
)
2336 opcode
|= (((31 - the_insn
.exp
.X_add_number
) & 0x1f) << 5);
2340 /* Handle a 5 bit bit position at 26. */
2343 if (the_insn
.exp
.X_op
== O_constant
)
2344 opcode
|= (the_insn
.exp
.X_add_number
& 0x1f) << 5;
2348 /* Handle a 5 bit immediate at 10. */
2351 im5
= evaluate_absolute (the_insn
.exp
, the_insn
.field_selector
);
2354 as_bad ("Operand out of range. Was: %d. Should be [0..31].",
2358 opcode
|= im5
<< 21;
2362 /* Handle a 13 bit immediate at 18. */
2364 pa_get_absolute_expression (s
);
2365 if (the_insn
.exp
.X_op
== O_constant
)
2366 opcode
|= (the_insn
.exp
.X_add_number
& 0x1fff) << 13;
2370 /* Handle a system control completer. */
2372 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2381 while (*s
== ' ' || *s
== '\t')
2385 /* Handle a 26 bit immediate at 31. */
2387 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2389 if (the_insn
.exp
.X_op
== O_constant
)
2391 opcode
|= ((evaluate_absolute (the_insn
.exp
,
2392 the_insn
.field_selector
)
2396 as_bad ("Invalid DIAG operand");
2400 /* Handle a 3 bit SFU identifier at 25. */
2402 sfu
= pa_parse_number (&s
, 0);
2403 if ((sfu
> 7) || (sfu
< 0))
2404 as_bad ("Invalid SFU identifier: %02x", sfu
);
2405 opcode
|= (sfu
& 7) << 6;
2408 /* We don't support any of these. FIXME. */
2415 /* Handle a source FP operand format completer. */
2417 flag
= pa_parse_fp_format (&s
);
2418 opcode
|= (int) flag
<< 11;
2419 the_insn
.fpof1
= flag
;
2422 /* Handle a destination FP operand format completer. */
2425 /* pa_parse_format needs the ',' prefix. */
2427 flag
= pa_parse_fp_format (&s
);
2428 opcode
|= (int) flag
<< 13;
2429 the_insn
.fpof2
= flag
;
2432 /* Handle FP compare conditions. */
2434 cond
= pa_parse_fp_cmp_cond (&s
);
2438 /* Handle L/R register halves like 't'. */
2441 struct pa_89_fp_reg_struct result
;
2443 pa_parse_number (&s
, &result
);
2444 if (result
.number_part
< 32 && result
.number_part
>= 0)
2446 opcode
|= (result
.number_part
& 0x1f);
2448 /* 0x30 opcodes are FP arithmetic operation opcodes
2449 and need to be turned into 0x38 opcodes. This
2450 is not necessary for loads/stores. */
2451 if (need_89_opcode (&the_insn
, &result
))
2453 if ((opcode
& 0xfc000000) == 0x30000000)
2455 opcode
|= (result
.l_r_select
& 1) << 6;
2460 opcode
|= (result
.l_r_select
& 1) << 6;
2468 /* Handle L/R register halves like 'b'. */
2471 struct pa_89_fp_reg_struct result
;
2473 pa_parse_number (&s
, &result
);
2474 if (result
.number_part
< 32 && result
.number_part
>= 0)
2476 opcode
|= (result
.number_part
& 0x1f) << 21;
2477 if (need_89_opcode (&the_insn
, &result
))
2479 opcode
|= (result
.l_r_select
& 1) << 7;
2487 /* Handle L/R register halves like 'x'. */
2490 struct pa_89_fp_reg_struct result
;
2492 pa_parse_number (&s
, &result
);
2493 if (result
.number_part
< 32 && result
.number_part
>= 0)
2495 opcode
|= (result
.number_part
& 0x1f) << 16;
2496 if (need_89_opcode (&the_insn
, &result
))
2498 opcode
|= (result
.l_r_select
& 1) << 12;
2506 /* Handle a 5 bit register field at 10. */
2509 struct pa_89_fp_reg_struct result
;
2512 status
= pa_parse_number (&s
, &result
);
2513 if (result
.number_part
< 32 && result
.number_part
>= 0)
2515 if (the_insn
.fpof1
== SGL
)
2517 result
.number_part
&= 0xF;
2518 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2520 opcode
|= result
.number_part
<< 21;
2526 /* Handle a 5 bit register field at 15. */
2529 struct pa_89_fp_reg_struct result
;
2532 status
= pa_parse_number (&s
, &result
);
2533 if (result
.number_part
< 32 && result
.number_part
>= 0)
2535 if (the_insn
.fpof1
== SGL
)
2537 result
.number_part
&= 0xF;
2538 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2540 opcode
|= result
.number_part
<< 16;
2546 /* Handle a 5 bit register field at 31. */
2549 struct pa_89_fp_reg_struct result
;
2552 status
= pa_parse_number (&s
, &result
);
2553 if (result
.number_part
< 32 && result
.number_part
>= 0)
2555 if (the_insn
.fpof1
== SGL
)
2557 result
.number_part
&= 0xF;
2558 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2560 opcode
|= result
.number_part
;
2566 /* Handle a 5 bit register field at 20. */
2569 struct pa_89_fp_reg_struct result
;
2572 status
= pa_parse_number (&s
, &result
);
2573 if (result
.number_part
< 32 && result
.number_part
>= 0)
2575 if (the_insn
.fpof1
== SGL
)
2577 result
.number_part
&= 0xF;
2578 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2580 opcode
|= result
.number_part
<< 11;
2586 /* Handle a 5 bit register field at 25. */
2589 struct pa_89_fp_reg_struct result
;
2592 status
= pa_parse_number (&s
, &result
);
2593 if (result
.number_part
< 32 && result
.number_part
>= 0)
2595 if (the_insn
.fpof1
== SGL
)
2597 result
.number_part
&= 0xF;
2598 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2600 opcode
|= result
.number_part
<< 6;
2606 /* Handle a floating point operand format at 26.
2607 Only allows single and double precision. */
2609 flag
= pa_parse_fp_format (&s
);
2615 the_insn
.fpof1
= flag
;
2621 as_bad ("Invalid Floating Point Operand Format.");
2631 /* Check if the args matched. */
2634 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2635 && !strcmp (insn
->name
, insn
[1].name
))
2643 as_bad ("Invalid operands %s", error_message
);
2650 the_insn
.opcode
= opcode
;
2654 /* Turn a string in input_line_pointer into a floating point constant of type
2655 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2656 emitted is stored in *sizeP . An error message or NULL is returned. */
2658 #define MAX_LITTLENUMS 6
2661 md_atof (type
, litP
, sizeP
)
2667 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2668 LITTLENUM_TYPE
*wordP
;
2700 return "Bad call to MD_ATOF()";
2702 t
= atof_ieee (input_line_pointer
, type
, words
);
2704 input_line_pointer
= t
;
2705 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2706 for (wordP
= words
; prec
--;)
2708 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2709 litP
+= sizeof (LITTLENUM_TYPE
);
2714 /* Write out big-endian. */
2717 md_number_to_chars (buf
, val
, n
)
2739 /* Translate internal representation of relocation info to BFD target
2743 tc_gen_reloc (section
, fixp
)
2748 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2749 bfd_reloc_code_real_type code
;
2750 static int unwind_reloc_fixp_cnt
= 0;
2751 static arelent
*unwind_reloc_entryP
= NULL
;
2752 static arelent
*no_relocs
= NULL
;
2754 bfd_reloc_code_real_type
**codes
;
2758 if (fixp
->fx_addsy
== 0)
2760 assert (hppa_fixp
!= 0);
2761 assert (section
!= 0);
2764 /* Yuk. I would really like to push all this ELF specific unwind
2765 crud into BFD and the linker. That's how SOM does it -- and
2766 if we could make ELF emulate that then we could share more code
2767 in GAS (and potentially a gnu-linker later).
2769 Unwind section relocations are handled in a special way.
2770 The relocations for the .unwind section are originally
2771 built in the usual way. That is, for each unwind table
2772 entry there are two relocations: one for the beginning of
2773 the function and one for the end.
2775 The first time we enter this function we create a
2776 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2777 of the relocation is initialized to 0. Each additional
2778 pair of times this function is called for the unwind
2779 section represents an additional unwind table entry. Thus,
2780 the addend of the relocation should end up to be the number
2781 of unwind table entries. */
2782 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2784 if (unwind_reloc_entryP
== NULL
)
2786 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2788 assert (reloc
!= 0);
2789 unwind_reloc_entryP
= reloc
;
2790 unwind_reloc_fixp_cnt
++;
2791 unwind_reloc_entryP
->address
2792 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2793 /* A pointer to any function will do. We only
2794 need one to tell us what section the unwind
2795 relocations are for. */
2796 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2797 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2798 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2799 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2800 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2801 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2802 sizeof (arelent
*) * 2);
2803 assert (relocs
!= 0);
2804 relocs
[0] = unwind_reloc_entryP
;
2808 unwind_reloc_fixp_cnt
++;
2809 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2815 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2816 assert (reloc
!= 0);
2818 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2819 codes
= hppa_gen_reloc_type (stdoutput
,
2821 hppa_fixp
->fx_r_format
,
2822 hppa_fixp
->fx_r_field
);
2824 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2827 relocs
= (arelent
**)
2828 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2829 assert (relocs
!= 0);
2831 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2832 sizeof (arelent
) * n_relocs
);
2834 assert (reloc
!= 0);
2836 for (i
= 0; i
< n_relocs
; i
++)
2837 relocs
[i
] = &reloc
[i
];
2839 relocs
[n_relocs
] = NULL
;
2842 switch (fixp
->fx_r_type
)
2844 case R_HPPA_COMPLEX
:
2845 case R_HPPA_COMPLEX_PCREL_CALL
:
2846 case R_HPPA_COMPLEX_ABS_CALL
:
2847 assert (n_relocs
== 5);
2849 for (i
= 0; i
< n_relocs
; i
++)
2851 reloc
[i
].sym_ptr_ptr
= NULL
;
2852 reloc
[i
].address
= 0;
2853 reloc
[i
].addend
= 0;
2854 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2855 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2858 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2859 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2860 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2862 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2863 reloc
[3].addend
= fixp
->fx_addnumber
;
2864 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2865 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2866 reloc
[1].addend
= fixp
->fx_addnumber
;
2871 assert (n_relocs
== 1);
2875 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2876 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2877 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2878 reloc
->addend
= 0; /* default */
2880 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2882 /* Now, do any processing that is dependent on the relocation type. */
2885 case R_HPPA_PLABEL_32
:
2886 case R_HPPA_PLABEL_11
:
2887 case R_HPPA_PLABEL_14
:
2888 case R_HPPA_PLABEL_L21
:
2889 case R_HPPA_PLABEL_R11
:
2890 case R_HPPA_PLABEL_R14
:
2891 /* For plabel relocations, the addend of the
2892 relocation should be either 0 (no static link) or 2
2893 (static link required).
2895 FIXME: assume that fx_addnumber contains this
2897 reloc
->addend
= fixp
->fx_addnumber
;
2900 case R_HPPA_ABS_CALL_11
:
2901 case R_HPPA_ABS_CALL_14
:
2902 case R_HPPA_ABS_CALL_17
:
2903 case R_HPPA_ABS_CALL_L21
:
2904 case R_HPPA_ABS_CALL_R11
:
2905 case R_HPPA_ABS_CALL_R14
:
2906 case R_HPPA_ABS_CALL_R17
:
2907 case R_HPPA_ABS_CALL_LS21
:
2908 case R_HPPA_ABS_CALL_RS11
:
2909 case R_HPPA_ABS_CALL_RS14
:
2910 case R_HPPA_ABS_CALL_RS17
:
2911 case R_HPPA_ABS_CALL_LD21
:
2912 case R_HPPA_ABS_CALL_RD11
:
2913 case R_HPPA_ABS_CALL_RD14
:
2914 case R_HPPA_ABS_CALL_RD17
:
2915 case R_HPPA_ABS_CALL_LR21
:
2916 case R_HPPA_ABS_CALL_RR14
:
2917 case R_HPPA_ABS_CALL_RR17
:
2919 case R_HPPA_PCREL_CALL_11
:
2920 case R_HPPA_PCREL_CALL_14
:
2921 case R_HPPA_PCREL_CALL_17
:
2922 case R_HPPA_PCREL_CALL_L21
:
2923 case R_HPPA_PCREL_CALL_R11
:
2924 case R_HPPA_PCREL_CALL_R14
:
2925 case R_HPPA_PCREL_CALL_R17
:
2926 case R_HPPA_PCREL_CALL_LS21
:
2927 case R_HPPA_PCREL_CALL_RS11
:
2928 case R_HPPA_PCREL_CALL_RS14
:
2929 case R_HPPA_PCREL_CALL_RS17
:
2930 case R_HPPA_PCREL_CALL_LD21
:
2931 case R_HPPA_PCREL_CALL_RD11
:
2932 case R_HPPA_PCREL_CALL_RD14
:
2933 case R_HPPA_PCREL_CALL_RD17
:
2934 case R_HPPA_PCREL_CALL_LR21
:
2935 case R_HPPA_PCREL_CALL_RR14
:
2936 case R_HPPA_PCREL_CALL_RR17
:
2937 /* The constant is stored in the instruction. */
2938 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2941 reloc
->addend
= fixp
->fx_addnumber
;
2948 /* Preliminary relocation handling for SOM. Needs to handle
2949 COMPLEX relocations (yes, I've seen them occur) and it will
2950 need to handle R_ENTRY/R_EXIT relocations in the very near future
2951 (for generating unwinds). */
2952 switch (fixp
->fx_r_type
)
2954 case R_HPPA_COMPLEX
:
2955 case R_HPPA_COMPLEX_PCREL_CALL
:
2956 case R_HPPA_COMPLEX_ABS_CALL
:
2960 assert (n_relocs
== 1);
2964 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2965 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2966 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2973 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2976 reloc
->addend
= fixp
->fx_addnumber
;
2986 /* Process any machine dependent frag types. */
2989 md_convert_frag (abfd
, sec
, fragP
)
2991 register asection
*sec
;
2992 register fragS
*fragP
;
2994 unsigned int address
;
2996 if (fragP
->fr_type
== rs_machine_dependent
)
2998 switch ((int) fragP
->fr_subtype
)
3001 fragP
->fr_type
= rs_fill
;
3002 know (fragP
->fr_var
== 1);
3003 know (fragP
->fr_next
);
3004 address
= fragP
->fr_address
+ fragP
->fr_fix
;
3005 if (address
% fragP
->fr_offset
)
3008 fragP
->fr_next
->fr_address
3013 fragP
->fr_offset
= 0;
3019 /* Round up a section size to the appropriate boundary. */
3022 md_section_align (segment
, size
)
3026 int align
= bfd_get_section_alignment (stdoutput
, segment
);
3027 int align2
= (1 << align
) - 1;
3029 return (size
+ align2
) & ~align2
;
3033 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
3035 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
3037 addressT from_addr
, to_addr
;
3041 fprintf (stderr
, "pa_create_short_jmp\n");
3045 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
3047 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
3049 addressT from_addr
, to_addr
;
3053 fprintf (stderr
, "pa_create_long_jump\n");
3057 /* Return the approximate size of a frag before relaxation has occurred. */
3059 md_estimate_size_before_relax (fragP
, segment
)
3060 register fragS
*fragP
;
3067 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
3073 /* Parse machine dependent options. There are none on the PA. */
3075 md_parse_option (argP
, cntP
, vecP
)
3083 /* We have no need to default values of symbols. */
3086 md_undefined_symbol (name
)
3092 /* Parse an operand that is machine-specific.
3093 We just return without modifying the expression as we have nothing
3097 md_operand (expressionP
)
3098 expressionS
*expressionP
;
3102 /* Helper function for md_apply_fix. Actually determine if the fix
3103 can be applied, and if so, apply it.
3105 If a fix is applied, then set fx_addsy to NULL which indicates
3106 the fix was applied and need not be emitted into the object file. */
3109 md_apply_fix_1 (fixP
, val
)
3113 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
3114 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
3115 long new_val
, result
;
3116 unsigned int w1
, w2
, w
;
3118 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3119 never be "applied". They must always be emitted. */
3121 if (fixP
->fx_r_type
== R_HPPA_ENTRY
3122 || fixP
->fx_r_type
== R_HPPA_EXIT
)
3126 /* There should have been an HPPA specific fixup associated
3127 with the GAS fixup. */
3130 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
3131 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
3133 /* Sanity check the fixup type. */
3134 /* Is this really necessary? */
3135 if (fixP
->fx_r_type
== R_HPPA_NONE
)
3138 /* Remember this value for emit_reloc. FIXME, is this braindamage
3139 documented anywhere!?! */
3140 fixP
->fx_addnumber
= val
;
3142 /* Check if this is an undefined symbol. No relocation can
3143 possibly be performed in this case. */
3144 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
3146 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
3151 /* Handle all opcodes with the 'j' operand type. */
3153 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3155 /* Mask off 14 bits to be changed. */
3156 bfd_put_32 (stdoutput
,
3157 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3159 low_sign_unext (new_val
, 14, &result
);
3162 /* Handle all opcodes with the 'k' operand type. */
3164 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3166 /* Mask off 21 bits to be changed. */
3167 bfd_put_32 (stdoutput
,
3168 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3170 dis_assemble_21 (new_val
, &result
);
3173 /* Handle all the opcodes with the 'i' operand type. */
3175 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3177 /* Mask off 11 bits to be changed. */
3178 bfd_put_32 (stdoutput
,
3179 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3181 low_sign_unext (new_val
, 11, &result
);
3184 /* Handle all the opcodes with the 'w' operand type. */
3186 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3188 /* Mask off 11 bits to be changed. */
3189 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3190 bfd_put_32 (stdoutput
,
3191 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3194 dis_assemble_12 (result
, &w1
, &w
);
3195 result
= ((w1
<< 2) | w
);
3196 fixP
->fx_addsy
= NULL
;
3199 #define too_far(VAL, NUM_BITS) \
3200 (((int)(VAL) > (1 << (NUM_BITS)) - 1) || ((int)(VAL) < (-1 << (NUM_BITS))))
3202 #define stub_needed(CALLER, CALLEE) \
3203 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3205 /* Handle some of the opcodes with the 'W' operand type. */
3207 /* If a long-call stub or argument relocation stub is
3208 needed, then we can not apply this relocation, instead
3209 the linker must handle it. */
3210 if (too_far (val
, 18)
3211 || stub_needed (((obj_symbol_type
*)
3212 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3213 hppa_fixP
->fx_arg_reloc
))
3216 /* No stubs were needed, we can perform this relocation. */
3217 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3219 /* Mask off 17 bits to be changed. */
3220 bfd_put_32 (stdoutput
,
3221 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3223 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3224 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3225 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3226 fixP
->fx_addsy
= NULL
;
3234 /* These are ELF specific relocations. ELF unfortunately
3235 handles unwinds in a completely different manner. */
3236 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3237 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3238 result
= fixP
->fx_addnumber
;
3243 fixP
->fx_addnumber
= fixP
->fx_offset
;
3244 bfd_put_32 (stdoutput
, 0, buf
);
3253 as_bad ("bad relocation type/fmt: 0x%02x/0x%02x",
3254 fixP
->fx_r_type
, fmt
);
3258 /* Insert the relocation. */
3259 buf
[0] |= (result
& 0xff000000) >> 24;
3260 buf
[1] |= (result
& 0x00ff0000) >> 16;
3261 buf
[2] |= (result
& 0x0000ff00) >> 8;
3262 buf
[3] |= result
& 0x000000ff;
3265 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3266 (unsigned int) fixP
, fixP
->fx_r_type
);
3269 /* Apply a fix into a frag's data (if possible). */
3272 md_apply_fix (fixP
, valp
)
3276 md_apply_fix_1 (fixP
, (long) *valp
);
3280 /* Exactly what point is a PC-relative offset relative TO?
3281 On the PA, they're relative to the address of the offset. */
3284 md_pcrel_from (fixP
)
3287 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3290 /* Return nonzero if the input line pointer is at the end of
3294 is_end_of_statement ()
3296 return ((*input_line_pointer
== '\n')
3297 || (*input_line_pointer
== ';')
3298 || (*input_line_pointer
== '!'));
3301 /* Read a number from S. The number might come in one of many forms,
3302 the most common will be a hex or decimal constant, but it could be
3303 a pre-defined register (Yuk!), or an absolute symbol.
3305 Return a number or -1 for failure.
3307 When parsing PA-89 FP register numbers RESULT will be
3308 the address of a structure to return information about
3309 L/R half of FP registers, store results there as appropriate.
3311 pa_parse_number can not handle negative constants and will fail
3312 horribly if it is passed such a constant. */
3315 pa_parse_number (s
, result
)
3317 struct pa_89_fp_reg_struct
*result
;
3326 /* Skip whitespace before the number. */
3327 while (*p
== ' ' || *p
== '\t')
3330 /* Store info in RESULT if requested by caller. */
3333 result
->number_part
= -1;
3334 result
->l_r_select
= -1;
3340 /* Looks like a number. */
3343 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3345 /* The number is specified in hex. */
3347 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3348 || ((*p
>= 'A') && (*p
<= 'F')))
3351 num
= num
* 16 + *p
- '0';
3352 else if (*p
>= 'a' && *p
<= 'f')
3353 num
= num
* 16 + *p
- 'a' + 10;
3355 num
= num
* 16 + *p
- 'A' + 10;
3361 /* The number is specified in decimal. */
3362 while (isdigit (*p
))
3364 num
= num
* 10 + *p
- '0';
3369 /* Store info in RESULT if requested by the caller. */
3372 result
->number_part
= num
;
3374 if (IS_R_SELECT (p
))
3376 result
->l_r_select
= 1;
3379 else if (IS_L_SELECT (p
))
3381 result
->l_r_select
= 0;
3385 result
->l_r_select
= 0;
3390 /* The number might be a predefined register. */
3395 /* Tege hack: Special case for general registers as the general
3396 code makes a binary search with case translation, and is VERY
3401 if (*p
== 'e' && *(p
+ 1) == 't'
3402 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3405 num
= *p
- '0' + 28;
3413 else if (!isdigit (*p
))
3416 as_bad ("Undefined register: '%s'.", name
);
3422 num
= num
* 10 + *p
++ - '0';
3423 while (isdigit (*p
));
3428 /* Do a normal register search. */
3429 while (is_part_of_name (c
))
3435 status
= reg_name_search (name
);
3441 as_bad ("Undefined register: '%s'.", name
);
3447 /* Store info in RESULT if requested by caller. */
3450 result
->number_part
= num
;
3451 if (IS_R_SELECT (p
- 1))
3452 result
->l_r_select
= 1;
3453 else if (IS_L_SELECT (p
- 1))
3454 result
->l_r_select
= 0;
3456 result
->l_r_select
= 0;
3461 /* And finally, it could be a symbol in the absolute section which
3462 is effectively a constant. */
3466 while (is_part_of_name (c
))
3472 if ((sym
= symbol_find (name
)) != NULL
)
3474 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3475 num
= S_GET_VALUE (sym
);
3479 as_bad ("Non-absolute symbol: '%s'.", name
);
3485 /* There is where we'd come for an undefined symbol
3486 or for an empty string. For an empty string we
3487 will return zero. That's a concession made for
3488 compatability with the braindamaged HP assemblers. */
3494 as_bad ("Undefined absolute constant: '%s'.", name
);
3500 /* Store info in RESULT if requested by caller. */
3503 result
->number_part
= num
;
3504 if (IS_R_SELECT (p
- 1))
3505 result
->l_r_select
= 1;
3506 else if (IS_L_SELECT (p
- 1))
3507 result
->l_r_select
= 0;
3509 result
->l_r_select
= 0;
3517 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3519 /* Given NAME, find the register number associated with that name, return
3520 the integer value associated with the given name or -1 on failure. */
3523 reg_name_search (name
)
3526 int middle
, low
, high
;
3529 high
= REG_NAME_CNT
- 1;
3533 middle
= (low
+ high
) / 2;
3534 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) < 0)
3539 while (!((strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0) ||
3542 if (strcasecmp (name
, pre_defined_registers
[middle
].name
) == 0)
3543 return (pre_defined_registers
[middle
].value
);
3549 /* Return nonzero if the given INSN and L/R information will require
3550 a new PA-89 opcode. */
3553 need_89_opcode (insn
, result
)
3555 struct pa_89_fp_reg_struct
*result
;
3557 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3563 /* Parse a condition for a fcmp instruction. Return the numerical
3564 code associated with the condition. */
3567 pa_parse_fp_cmp_cond (s
)
3574 for (i
= 0; i
< 32; i
++)
3576 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3577 strlen (fp_cond_map
[i
].string
)) == 0)
3579 cond
= fp_cond_map
[i
].cond
;
3580 *s
+= strlen (fp_cond_map
[i
].string
);
3581 while (**s
== ' ' || **s
== '\t')
3587 as_bad ("Invalid FP Compare Condition: %c", **s
);
3591 /* Parse an FP operand format completer returning the completer
3594 static fp_operand_format
3595 pa_parse_fp_format (s
)
3604 if (strncasecmp (*s
, "sgl", 3) == 0)
3609 else if (strncasecmp (*s
, "dbl", 3) == 0)
3614 else if (strncasecmp (*s
, "quad", 4) == 0)
3621 format
= ILLEGAL_FMT
;
3622 as_bad ("Invalid FP Operand Format: %3s", *s
);
3625 while (**s
== ' ' || **s
== '\t' || **s
== 0)
3631 /* Convert from a selector string into a selector type. */
3634 pa_chk_field_selector (str
)
3638 const struct selector_entry
*tablep
;
3642 /* Read past any whitespace. */
3643 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3646 /* Yuk. Looks like a linear search through the table. With the
3647 frequence of some selectors it might make sense to sort the
3649 for (tablep
= selector_table
; tablep
->prefix
; tablep
++)
3651 if (strncasecmp (tablep
->prefix
, *str
, strlen (tablep
->prefix
)) == 0)
3653 *str
+= strlen (tablep
->prefix
);
3654 selector
= tablep
->field_selector
;
3661 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3664 get_expression (str
)
3670 save_in
= input_line_pointer
;
3671 input_line_pointer
= str
;
3672 seg
= expression (&the_insn
.exp
);
3673 if (!(seg
== absolute_section
3674 || seg
== undefined_section
3675 || SEG_NORMAL (seg
)))
3677 as_warn ("Bad segment in expression.");
3678 expr_end
= input_line_pointer
;
3679 input_line_pointer
= save_in
;
3682 expr_end
= input_line_pointer
;
3683 input_line_pointer
= save_in
;
3687 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3689 pa_get_absolute_expression (str
)
3694 save_in
= input_line_pointer
;
3695 input_line_pointer
= str
;
3696 expression (&the_insn
.exp
);
3697 if (the_insn
.exp
.X_op
!= O_constant
)
3699 as_warn ("Bad segment (should be absolute).");
3700 expr_end
= input_line_pointer
;
3701 input_line_pointer
= save_in
;
3704 expr_end
= input_line_pointer
;
3705 input_line_pointer
= save_in
;
3709 /* Evaluate an absolute expression EXP which may be modified by
3710 the selector FIELD_SELECTOR. Return the value of the expression. */
3712 evaluate_absolute (exp
, field_selector
)
3718 value
= exp
.X_add_number
;
3720 switch (field_selector
)
3726 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3728 if (value
& 0x00000400)
3730 value
= (value
& 0xfffff800) >> 11;
3733 /* Sign extend from bit 21. */
3735 if (value
& 0x00000400)
3736 value
|= 0xfffff800;
3741 /* Arithmetic shift right 11 bits. */
3743 value
= (value
& 0xfffff800) >> 11;
3746 /* Set bits 0-20 to zero. */
3748 value
= value
& 0x7ff;
3751 /* Add 0x800 and arithmetic shift right 11 bits. */
3756 value
= (value
& 0xfffff800) >> 11;
3759 /* Set bitgs 0-21 to one. */
3761 value
|= 0xfffff800;
3764 /* This had better get fixed. It looks like we're quickly moving
3771 BAD_CASE (field_selector
);
3777 /* Given an argument location specification return the associated
3778 argument location number. */
3781 pa_build_arg_reloc (type_name
)
3785 if (strncasecmp (type_name
, "no", 2) == 0)
3787 if (strncasecmp (type_name
, "gr", 2) == 0)
3789 else if (strncasecmp (type_name
, "fr", 2) == 0)
3791 else if (strncasecmp (type_name
, "fu", 2) == 0)
3794 as_bad ("Invalid argument location: %s\n", type_name
);
3799 /* Encode and return an argument relocation specification for
3800 the given register in the location specified by arg_reloc. */
3803 pa_align_arg_reloc (reg
, arg_reloc
)
3805 unsigned int arg_reloc
;
3807 unsigned int new_reloc
;
3809 new_reloc
= arg_reloc
;
3825 as_bad ("Invalid argument description: %d", reg
);
3831 /* Parse a PA nullification completer (,n). Return nonzero if the
3832 completer was found; return zero if no completer was found. */
3844 if (strncasecmp (*s
, "n", 1) == 0)
3848 as_bad ("Invalid Nullification: (%c)", **s
);
3853 while (**s
== ' ' || **s
== '\t')
3859 /* Parse a non-negated compare/subtract completer returning the
3860 number (for encoding in instrutions) of the given completer.
3862 ISBRANCH specifies whether or not this is parsing a condition
3863 completer for a branch (vs a nullification completer for a
3864 computational instruction. */
3867 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3872 char *name
= *s
+ 1;
3880 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3884 if (strcmp (name
, "=") == 0)
3888 else if (strcmp (name
, "<") == 0)
3892 else if (strcmp (name
, "<=") == 0)
3896 else if (strcmp (name
, "<<") == 0)
3900 else if (strcmp (name
, "<<=") == 0)
3904 else if (strcasecmp (name
, "sv") == 0)
3908 else if (strcasecmp (name
, "od") == 0)
3912 /* If we have something like addb,n then there is no condition
3914 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3926 while (**s
== ' ' || **s
== '\t')
3930 /* Reset pointers if this was really a ,n for a branch instruction. */
3931 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3937 /* Parse a negated compare/subtract completer returning the
3938 number (for encoding in instrutions) of the given completer.
3940 ISBRANCH specifies whether or not this is parsing a condition
3941 completer for a branch (vs a nullification completer for a
3942 computational instruction. */
3945 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3950 char *name
= *s
+ 1;
3958 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3962 if (strcasecmp (name
, "tr") == 0)
3966 else if (strcmp (name
, "<>") == 0)
3970 else if (strcmp (name
, ">=") == 0)
3974 else if (strcmp (name
, ">") == 0)
3978 else if (strcmp (name
, ">>=") == 0)
3982 else if (strcmp (name
, ">>") == 0)
3986 else if (strcasecmp (name
, "nsv") == 0)
3990 else if (strcasecmp (name
, "ev") == 0)
3994 /* If we have something like addb,n then there is no condition
3996 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4008 while (**s
== ' ' || **s
== '\t')
4012 /* Reset pointers if this was really a ,n for a branch instruction. */
4013 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4019 /* Parse a non-negated addition completer returning the number
4020 (for encoding in instrutions) of the given completer.
4022 ISBRANCH specifies whether or not this is parsing a condition
4023 completer for a branch (vs a nullification completer for a
4024 computational instruction. */
4027 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
4032 char *name
= *s
+ 1;
4040 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
4044 if (strcmp (name
, "=") == 0)
4048 else if (strcmp (name
, "<") == 0)
4052 else if (strcmp (name
, "<=") == 0)
4056 else if (strcasecmp (name
, "nuv") == 0)
4060 else if (strcasecmp (name
, "znv") == 0)
4064 else if (strcasecmp (name
, "sv") == 0)
4068 else if (strcasecmp (name
, "od") == 0)
4072 /* If we have something like addb,n then there is no condition
4074 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4086 while (**s
== ' ' || **s
== '\t')
4090 /* Reset pointers if this was really a ,n for a branch instruction. */
4091 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4097 /* Parse a negated addition completer returning the number
4098 (for encoding in instrutions) of the given completer.
4100 ISBRANCH specifies whether or not this is parsing a condition
4101 completer for a branch (vs a nullification completer for a
4102 computational instruction. */
4105 pa_parse_neg_add_cmpltr (s
, isbranch
)
4110 char *name
= *s
+ 1;
4118 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
4122 if (strcasecmp (name
, "tr") == 0)
4126 else if (strcmp (name
, "<>") == 0)
4130 else if (strcmp (name
, ">=") == 0)
4134 else if (strcmp (name
, ">") == 0)
4138 else if (strcmp (name
, "uv") == 0)
4142 else if (strcmp (name
, "vnz") == 0)
4146 else if (strcasecmp (name
, "nsv") == 0)
4150 else if (strcasecmp (name
, "ev") == 0)
4154 /* If we have something like addb,n then there is no condition
4156 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4168 while (**s
== ' ' || **s
== '\t')
4172 /* Reset pointers if this was really a ,n for a branch instruction. */
4173 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4179 /* Handle a .BLOCK type pseudo-op. */
4187 unsigned int temp_size
;
4190 temp_size
= get_absolute_expression ();
4192 /* Always fill with zeros, that's what the HP assembler does. */
4195 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4196 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4197 bzero (p
, temp_size
);
4199 /* Convert 2 bytes at a time. */
4201 for (i
= 0; i
< temp_size
; i
+= 2)
4203 md_number_to_chars (p
+ i
,
4205 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4208 pa_undefine_label ();
4209 demand_empty_rest_of_line ();
4213 /* Handle a .CALL pseudo-op. This involves storing away information
4214 about where arguments are to be found so the linker can detect
4215 (and correct) argument location mismatches between caller and callee. */
4221 pa_call_args (&last_call_desc
);
4222 demand_empty_rest_of_line ();
4226 /* Do the dirty work of building a call descriptor which describes
4227 where the caller placed arguments to a function call. */
4230 pa_call_args (call_desc
)
4231 struct call_desc
*call_desc
;
4234 unsigned int temp
, arg_reloc
;
4236 while (!is_end_of_statement ())
4238 name
= input_line_pointer
;
4239 c
= get_symbol_end ();
4240 /* Process a source argument. */
4241 if ((strncasecmp (name
, "argw", 4) == 0))
4243 temp
= atoi (name
+ 4);
4244 p
= input_line_pointer
;
4246 input_line_pointer
++;
4247 name
= input_line_pointer
;
4248 c
= get_symbol_end ();
4249 arg_reloc
= pa_build_arg_reloc (name
);
4250 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4252 /* Process a return value. */
4253 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4255 p
= input_line_pointer
;
4257 input_line_pointer
++;
4258 name
= input_line_pointer
;
4259 c
= get_symbol_end ();
4260 arg_reloc
= pa_build_arg_reloc (name
);
4261 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4265 as_bad ("Invalid .CALL argument: %s", name
);
4267 p
= input_line_pointer
;
4269 if (!is_end_of_statement ())
4270 input_line_pointer
++;
4274 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4277 is_same_frag (frag1
, frag2
)
4284 else if (frag2
== NULL
)
4286 else if (frag1
== frag2
)
4288 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4289 return (is_same_frag (frag1
, frag2
->fr_next
));
4295 /* Build an entry in the UNWIND subspace from the given function
4296 attributes in CALL_INFO. This is not needed for SOM as using
4297 R_ENTRY and R_EXIT relocations allow the linker to handle building
4298 of the unwind spaces. */
4301 pa_build_unwind_subspace (call_info
)
4302 struct call_info
*call_info
;
4305 asection
*seg
, *save_seg
;
4306 subsegT subseg
, save_subseg
;
4310 /* Get into the right seg/subseg. This may involve creating
4311 the seg the first time through. Make sure to have the
4312 old seg/subseg so that we can reset things when we are done. */
4313 subseg
= SUBSEG_UNWIND
;
4314 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4315 if (seg
== ASEC_NULL
)
4317 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4318 bfd_set_section_flags (stdoutput
, seg
,
4319 SEC_READONLY
| SEC_HAS_CONTENTS
4320 | SEC_LOAD
| SEC_RELOC
);
4324 save_subseg
= now_subseg
;
4325 subseg_set (seg
, subseg
);
4328 /* Get some space to hold relocation information for the unwind
4331 call_info
->start_offset_frag
= frag_now
;
4332 call_info
->start_frag_where
= p
- frag_now
->fr_literal
;
4334 /* Relocation info. for start offset of the function. */
4335 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4336 call_info
->start_symbol
, (offsetT
) 0,
4337 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4340 /* We need to search for the first relocation involving the start_symbol of
4341 this call_info descriptor. */
4345 call_info
->start_fix
= seg_info (now_seg
)->fix_root
;
4346 for (fixP
= call_info
->start_fix
; fixP
; fixP
= fixP
->fx_next
)
4348 if (fixP
->fx_addsy
== call_info
->start_symbol
4349 || fixP
->fx_subsy
== call_info
->start_symbol
)
4351 call_info
->start_fix
= fixP
;
4358 call_info
->end_offset_frag
= frag_now
;
4359 call_info
->end_frag_where
= p
- frag_now
->fr_literal
;
4361 /* Relocation info. for end offset of the function. */
4362 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4363 call_info
->end_symbol
, (offsetT
) 0,
4364 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4367 /* We need to search for the first relocation involving the end_symbol of
4368 this call_info descriptor. */
4372 call_info
->end_fix
= seg_info (now_seg
)->fix_root
; /* the default */
4373 for (fixP
= call_info
->end_fix
; fixP
; fixP
= fixP
->fx_next
)
4375 if (fixP
->fx_addsy
== call_info
->end_symbol
4376 || fixP
->fx_subsy
== call_info
->end_symbol
)
4378 call_info
->end_fix
= fixP
;
4385 unwind
= (char *) &call_info
->ci_unwind
;
4386 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4390 FRAG_APPEND_1_CHAR (c
);
4394 /* Return back to the original segment/subsegment. */
4395 subseg_set (save_seg
, save_subseg
);
4399 /* Process a .CALLINFO pseudo-op. This information is used later
4400 to build unwind descriptors and maybe one day to support
4401 .ENTER and .LEAVE. */
4404 pa_callinfo (unused
)
4410 /* .CALLINFO must appear within a procedure definition. */
4411 if (!within_procedure
)
4412 as_bad (".callinfo is not within a procedure definition");
4414 /* Mark the fact that we found the .CALLINFO for the
4415 current procedure. */
4416 callinfo_found
= TRUE
;
4418 /* Iterate over the .CALLINFO arguments. */
4419 while (!is_end_of_statement ())
4421 name
= input_line_pointer
;
4422 c
= get_symbol_end ();
4423 /* Frame size specification. */
4424 if ((strncasecmp (name
, "frame", 5) == 0))
4426 p
= input_line_pointer
;
4428 input_line_pointer
++;
4429 temp
= get_absolute_expression ();
4430 if ((temp
& 0x3) != 0)
4432 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4436 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4437 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4440 /* Entry register (GR, GR and SR) specifications. */
4441 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4443 p
= input_line_pointer
;
4445 input_line_pointer
++;
4446 temp
= get_absolute_expression ();
4447 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4448 even though %r19 is caller saved. I think this is a bug in
4449 the HP assembler, and we are not going to emulate it. */
4450 if (temp
< 3 || temp
> 18)
4451 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4452 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4454 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4456 p
= input_line_pointer
;
4458 input_line_pointer
++;
4459 temp
= get_absolute_expression ();
4460 /* Similarly the HP assembler takes 31 as the high bound even
4461 though %fr21 is the last callee saved floating point register. */
4462 if (temp
< 12 || temp
> 21)
4463 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4464 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4466 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4468 p
= input_line_pointer
;
4470 input_line_pointer
++;
4471 temp
= get_absolute_expression ();
4473 as_bad ("Value for ENTRY_SR must be 3\n");
4474 last_call_info
->entry_sr
= temp
- 2;
4476 /* Note whether or not this function performs any calls. */
4477 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4478 (strncasecmp (name
, "caller", 6) == 0))
4480 p
= input_line_pointer
;
4482 last_call_info
->makes_calls
= 1;
4484 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4486 p
= input_line_pointer
;
4488 last_call_info
->makes_calls
= 0;
4490 /* Should RP be saved into the stack. */
4491 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4493 p
= input_line_pointer
;
4495 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4497 /* Likewise for SP. */
4498 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4500 p
= input_line_pointer
;
4502 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4504 /* Is this an unwindable procedure. If so mark it so
4505 in the unwind descriptor. */
4506 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4508 p
= input_line_pointer
;
4510 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4512 /* Is this an interrupt routine. If so mark it in the
4513 unwind descriptor. */
4514 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4516 p
= input_line_pointer
;
4518 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4522 as_bad ("Invalid .CALLINFO argument: %s", name
);
4524 if (!is_end_of_statement ())
4525 input_line_pointer
++;
4528 demand_empty_rest_of_line ();
4532 /* Switch into the code subspace. */
4538 sd_chain_struct
*sdchain
;
4540 /* First time through it might be necessary to create the
4542 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4544 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4545 pa_def_spaces
[0].spnum
,
4546 pa_def_spaces
[0].loadable
,
4547 pa_def_spaces
[0].defined
,
4548 pa_def_spaces
[0].private,
4549 pa_def_spaces
[0].sort
,
4550 pa_def_spaces
[0].segment
, 0);
4553 SPACE_DEFINED (sdchain
) = 1;
4554 subseg_set (text_section
, SUBSEG_CODE
);
4555 demand_empty_rest_of_line ();
4559 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4560 the .comm pseudo-op has the following symtax:
4562 <label> .comm <length>
4564 where <label> is optional and is a symbol whose address will be the start of
4565 a block of memory <length> bytes long. <length> must be an absolute
4566 expression. <length> bytes will be allocated in the current space
4575 label_symbol_struct
*label_symbol
= pa_get_label ();
4578 symbol
= label_symbol
->lss_label
;
4583 size
= get_absolute_expression ();
4587 /* It is incorrect to check S_IS_DEFINED at this point as
4588 the symbol will *always* be defined. FIXME. How to
4589 correctly determine when this label really as been
4591 if (S_GET_VALUE (symbol
))
4593 if (S_GET_VALUE (symbol
) != size
)
4595 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4596 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4602 S_SET_VALUE (symbol
, size
);
4603 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4604 S_SET_EXTERNAL (symbol
);
4607 demand_empty_rest_of_line ();
4610 /* Process a .COPYRIGHT pseudo-op. */
4613 pa_copyright (unused
)
4620 if (*input_line_pointer
== '\"')
4622 ++input_line_pointer
;
4623 name
= input_line_pointer
;
4624 while ((c
= next_char_of_string ()) >= 0)
4626 c
= *input_line_pointer
;
4627 *input_line_pointer
= '\0';
4628 *(input_line_pointer
- 1) = '\0';
4630 /* FIXME. Not supported */
4633 *input_line_pointer
= c
;
4637 as_bad ("Expected \"-ed string");
4639 pa_undefine_label ();
4640 demand_empty_rest_of_line ();
4643 /* Process a .END pseudo-op. */
4649 demand_empty_rest_of_line ();
4653 /* Process a .ENTER pseudo-op. This is not supported. */
4662 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4668 if (!within_procedure
)
4669 as_bad ("Misplaced .entry. Ignored.");
4672 if (!callinfo_found
)
4673 as_bad ("Missing .callinfo.");
4675 last_call_info
->start_frag
= frag_now
;
4677 demand_empty_rest_of_line ();
4678 within_entry_exit
= TRUE
;
4680 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4681 It will not be on if no .EXPORT pseudo-op exists (static function). */
4682 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4685 /* SOM defers building of unwind descriptors until the link phase.
4686 The assembler is responsible for creating an R_ENTRY relocation
4687 to mark the beginning of a region and hold the unwind bits, and
4688 for creating an R_EXIT relocation to mark the end of the region.
4690 FIXME. ELF should be using the same conventions! The problem
4691 is an unwind requires too much relocation space. Hmmm. Maybe
4692 if we split the unwind bits up between the relocations which
4693 denote the entry and exit points. */
4695 char *where
= frag_more (0);
4697 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4698 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4699 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4700 (char *)&last_call_info
->ci_unwind
.descriptor
);
4707 /* Handle a .EQU pseudo-op. */
4713 label_symbol_struct
*label_symbol
= pa_get_label ();
4718 symbol
= label_symbol
->lss_label
;
4719 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4720 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4725 as_bad (".REG must use a label");
4727 as_bad (".EQU must use a label");
4730 pa_undefine_label ();
4731 demand_empty_rest_of_line ();
4735 /* Helper function. Does processing for the end of a function. This
4736 usually involves creating some relocations or building special
4737 symbols to mark the end of the function. */
4744 where
= frag_more (0);
4747 /* ELF does not have EXIT relocations. All we do is create a
4748 temporary symbol marking the end of the function. */
4750 char *name
= (char *) xmalloc (strlen ("L$\001end_") +
4751 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
4757 strcpy (name
, "L$\001end_");
4758 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
4760 symbolP
= symbol_find (name
);
4762 as_warn ("Symbol '%s' already defined.", name
);
4765 /* symbol value should be the offset of the
4766 last instruction of the function */
4767 symbolP
= symbol_new (name
, now_seg
,
4768 (valueT
) (obstack_next_free (&frags
)
4769 - frag_now
->fr_literal
- 4),
4773 symbolP
->bsym
->flags
= BSF_LOCAL
;
4774 symbol_table_insert (symbolP
);
4777 last_call_info
->end_symbol
= symbolP
;
4779 as_bad ("Symbol '%s' could not be created.", name
);
4783 as_bad ("No memory for symbol name.");
4786 /* Stuff away the location of the frag for the end of the function,
4787 and call pa_build_unwind_subspace to add an entry in the unwind
4789 last_call_info
->end_frag
= frag_now
;
4790 pa_build_unwind_subspace (last_call_info
);
4792 /* SOM defers building of unwind descriptors until the link phase.
4793 The assembler is responsible for creating an R_ENTRY relocation
4794 to mark the beginning of a region and hold the unwind bits, and
4795 for creating an R_EXIT relocation to mark the end of the region.
4797 FIXME. ELF should be using the same conventions! The problem
4798 is an unwind requires too much relocation space. Hmmm. Maybe
4799 if we split the unwind bits up between the relocations which
4800 denote the entry and exit points. */
4801 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4802 last_call_info
->start_symbol
, (offsetT
) 0,
4803 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4806 exit_processing_complete
= TRUE
;
4809 /* Process a .EXIT pseudo-op. */
4815 if (!within_procedure
)
4816 as_bad (".EXIT must appear within a procedure");
4819 if (!callinfo_found
)
4820 as_bad ("Missing .callinfo");
4823 if (!within_entry_exit
)
4824 as_bad ("No .ENTRY for this .EXIT");
4827 within_entry_exit
= FALSE
;
4832 demand_empty_rest_of_line ();
4836 /* Process a .EXPORT directive. This makes functions external
4837 and provides information such as argument relocation entries
4847 name
= input_line_pointer
;
4848 c
= get_symbol_end ();
4849 /* Make sure the given symbol exists. */
4850 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4852 as_bad ("Cannot define export symbol: %s\n", name
);
4853 p
= input_line_pointer
;
4855 input_line_pointer
++;
4859 /* OK. Set the external bits and process argument relocations. */
4860 S_SET_EXTERNAL (symbol
);
4861 p
= input_line_pointer
;
4863 if (!is_end_of_statement ())
4865 input_line_pointer
++;
4866 pa_export_args (symbol
);
4868 pa_build_symextn_section ();
4873 demand_empty_rest_of_line ();
4877 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4880 pa_export_args (symbolP
)
4884 unsigned int temp
, arg_reloc
;
4885 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4886 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4888 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4890 input_line_pointer
+= 8;
4891 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4892 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4893 type
= SYMBOL_TYPE_ABSOLUTE
;
4895 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4897 input_line_pointer
+= 4;
4898 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4899 type
= SYMBOL_TYPE_CODE
;
4901 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4903 input_line_pointer
+= 4;
4904 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4905 type
= SYMBOL_TYPE_DATA
;
4907 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4909 input_line_pointer
+= 5;
4910 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4911 type
= SYMBOL_TYPE_ENTRY
;
4913 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4915 input_line_pointer
+= 9;
4916 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4917 type
= SYMBOL_TYPE_MILLICODE
;
4919 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4921 input_line_pointer
+= 6;
4922 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4923 type
= SYMBOL_TYPE_PLABEL
;
4925 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4927 input_line_pointer
+= 8;
4928 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4929 type
= SYMBOL_TYPE_PRI_PROG
;
4931 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4933 input_line_pointer
+= 8;
4934 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4935 type
= SYMBOL_TYPE_SEC_PROG
;
4938 /* SOM requires much more information about symbol types
4939 than BFD understands. This is how we get this information
4940 to the SOM BFD backend. */
4941 #ifdef obj_set_symbol_type
4942 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4945 /* Now that the type of the exported symbol has been handled,
4946 handle any argument relocation information. */
4947 while (!is_end_of_statement ())
4949 if (*input_line_pointer
== ',')
4950 input_line_pointer
++;
4951 name
= input_line_pointer
;
4952 c
= get_symbol_end ();
4953 /* Argument sources. */
4954 if ((strncasecmp (name
, "argw", 4) == 0))
4956 p
= input_line_pointer
;
4958 input_line_pointer
++;
4959 temp
= atoi (name
+ 4);
4960 name
= input_line_pointer
;
4961 c
= get_symbol_end ();
4962 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4963 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4964 *input_line_pointer
= c
;
4966 /* The return value. */
4967 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4969 p
= input_line_pointer
;
4971 input_line_pointer
++;
4972 name
= input_line_pointer
;
4973 c
= get_symbol_end ();
4974 arg_reloc
= pa_build_arg_reloc (name
);
4975 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4976 *input_line_pointer
= c
;
4978 /* Privelege level. */
4979 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4981 p
= input_line_pointer
;
4983 input_line_pointer
++;
4984 temp
= atoi (input_line_pointer
);
4985 c
= get_symbol_end ();
4986 *input_line_pointer
= c
;
4990 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4991 p
= input_line_pointer
;
4994 if (!is_end_of_statement ())
4995 input_line_pointer
++;
4999 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5000 assembly file must either be defined in the assembly file, or
5001 explicitly IMPORTED from another. */
5010 name
= input_line_pointer
;
5011 c
= get_symbol_end ();
5013 symbol
= symbol_find_or_make (name
);
5014 p
= input_line_pointer
;
5017 if (!is_end_of_statement ())
5019 input_line_pointer
++;
5020 pa_export_args (symbol
);
5024 /* Sigh. To be compatable with the HP assembler and to help
5025 poorly written assembly code, we assign a type based on
5026 the the current segment. Note only BSF_FUNCTION really
5027 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
5028 if (now_seg
== text_section
)
5029 symbol
->bsym
->flags
|= BSF_FUNCTION
;
5031 /* If the section is undefined, then the symbol is undefined
5032 Since this is an import, leave the section undefined. */
5033 S_SET_SEGMENT (symbol
, &bfd_und_section
);
5036 demand_empty_rest_of_line ();
5040 /* Handle a .LABEL pseudo-op. */
5048 name
= input_line_pointer
;
5049 c
= get_symbol_end ();
5051 if (strlen (name
) > 0)
5054 p
= input_line_pointer
;
5059 as_warn ("Missing label name on .LABEL");
5062 if (!is_end_of_statement ())
5064 as_warn ("extra .LABEL arguments ignored.");
5065 ignore_rest_of_line ();
5067 demand_empty_rest_of_line ();
5071 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
5080 /* Handle a .ORIGIN pseudo-op. */
5087 pa_undefine_label ();
5091 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5092 is for static functions. FIXME. Should share more code with .EXPORT. */
5101 name
= input_line_pointer
;
5102 c
= get_symbol_end ();
5104 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
5106 as_bad ("Cannot define static symbol: %s\n", name
);
5107 p
= input_line_pointer
;
5109 input_line_pointer
++;
5113 S_CLEAR_EXTERNAL (symbol
);
5114 p
= input_line_pointer
;
5116 if (!is_end_of_statement ())
5118 input_line_pointer
++;
5119 pa_export_args (symbol
);
5123 demand_empty_rest_of_line ();
5127 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5128 of a procedure from a syntatical point of view. */
5134 struct call_info
*call_info
;
5136 if (within_procedure
)
5137 as_fatal ("Nested procedures");
5139 /* Reset global variables for new procedure. */
5140 callinfo_found
= FALSE
;
5141 within_procedure
= TRUE
;
5142 exit_processing_complete
= FALSE
;
5144 /* Create another call_info structure. */
5145 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
5148 as_fatal ("Cannot allocate unwind descriptor\n");
5150 bzero (call_info
, sizeof (struct call_info
));
5152 call_info
->ci_next
= NULL
;
5154 if (call_info_root
== NULL
)
5156 call_info_root
= call_info
;
5157 last_call_info
= call_info
;
5161 last_call_info
->ci_next
= call_info
;
5162 last_call_info
= call_info
;
5165 /* set up defaults on call_info structure */
5167 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5168 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5169 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5170 call_info
->entry_sr
= ~0;
5171 call_info
->makes_calls
= 1;
5173 /* If we got a .PROC pseudo-op, we know that the function is defined
5174 locally. Make sure it gets into the symbol table. */
5176 label_symbol_struct
*label_symbol
= pa_get_label ();
5180 if (label_symbol
->lss_label
)
5182 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5183 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5186 as_bad ("Missing function name for .PROC (corrupted label)");
5189 as_bad ("Missing function name for .PROC");
5192 demand_empty_rest_of_line ();
5196 /* Process the syntatical end of a procedure. Make sure all the
5197 appropriate pseudo-ops were found within the procedure. */
5204 if (!within_procedure
)
5205 as_bad ("misplaced .procend");
5207 if (!callinfo_found
)
5208 as_bad ("Missing .callinfo for this procedure");
5210 if (within_entry_exit
)
5211 as_bad ("Missing .EXIT for a .ENTRY");
5213 if (!exit_processing_complete
)
5216 within_procedure
= FALSE
;
5217 demand_empty_rest_of_line ();
5221 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5222 then create a new space entry to hold the information specified
5223 by the parameters to the .SPACE directive. */
5225 static sd_chain_struct
*
5226 pa_parse_space_stmt (space_name
, create_flag
)
5230 char *name
, *ptemp
, c
;
5231 char loadable
, defined
, private, sort
;
5233 asection
*seg
= NULL
;
5234 sd_chain_struct
*space
;
5236 /* load default values */
5242 if (strcasecmp (space_name
, "$TEXT$") == 0)
5244 seg
= pa_def_spaces
[0].segment
;
5245 sort
= pa_def_spaces
[0].sort
;
5247 else if (strcasecmp (space_name
, "$PRIVATE$") == 0)
5249 seg
= pa_def_spaces
[1].segment
;
5250 sort
= pa_def_spaces
[1].sort
;
5253 if (!is_end_of_statement ())
5255 print_errors
= FALSE
;
5256 ptemp
= input_line_pointer
+ 1;
5257 /* First see if the space was specified as a number rather than
5258 as a name. According to the PA assembly manual the rest of
5259 the line should be ignored. */
5260 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5261 input_line_pointer
= ptemp
;
5264 while (!is_end_of_statement ())
5266 input_line_pointer
++;
5267 name
= input_line_pointer
;
5268 c
= get_symbol_end ();
5269 if ((strncasecmp (name
, "SPNUM", 5) == 0))
5271 *input_line_pointer
= c
;
5272 input_line_pointer
++;
5273 spnum
= get_absolute_expression ();
5275 else if ((strncasecmp (name
, "SORT", 4) == 0))
5277 *input_line_pointer
= c
;
5278 input_line_pointer
++;
5279 sort
= get_absolute_expression ();
5281 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5283 *input_line_pointer
= c
;
5286 else if ((strncasecmp (name
, "NOTDEFINED", 10) == 0))
5288 *input_line_pointer
= c
;
5291 else if ((strncasecmp (name
, "PRIVATE", 7) == 0))
5293 *input_line_pointer
= c
;
5298 as_bad ("Invalid .SPACE argument");
5299 *input_line_pointer
= c
;
5300 if (! is_end_of_statement ())
5301 input_line_pointer
++;
5305 print_errors
= TRUE
;
5308 if (create_flag
&& seg
== NULL
)
5309 seg
= subseg_new (space_name
, 0);
5311 /* If create_flag is nonzero, then create the new space with
5312 the attributes computed above. Else set the values in
5313 an already existing space -- this can only happen for
5314 the first occurence of a built-in space. */
5316 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5317 private, sort
, seg
, 1);
5320 space
= is_defined_space (space_name
);
5321 SPACE_SPNUM (space
) = spnum
;
5322 SPACE_LOADABLE (space
) = loadable
& 1;
5323 SPACE_DEFINED (space
) = defined
& 1;
5324 SPACE_USER_DEFINED (space
) = 1;
5325 SPACE_PRIVATE (space
) = private & 1;
5326 SPACE_SORT (space
) = sort
& 0xff;
5327 space
->sd_seg
= seg
;
5330 #ifdef obj_set_section_attributes
5331 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5337 /* Adjust the frag's alignment according to the alignment needs
5338 of the given subspace/subsegment. */
5341 pa_align_subseg (seg
, subseg
)
5345 ssd_chain_struct
*now_subspace
;
5349 now_subspace
= pa_subsegment_to_subspace (seg
, subseg
);
5352 if (SUBSPACE_ALIGN (now_subspace
) == 0)
5353 alignment
= now_subspace
->ssd_last_align
;
5354 else if (now_subspace
->ssd_last_align
> SUBSPACE_ALIGN (now_subspace
))
5355 alignment
= now_subspace
->ssd_last_align
;
5357 alignment
= SUBSPACE_ALIGN (now_subspace
);
5359 while ((1 << shift
) < alignment
)
5363 shift
= bfd_get_section_alignment (stdoutput
, seg
);
5365 frag_align (shift
, 0);
5368 /* Handle a .SPACE pseudo-op; this switches the current space to the
5369 given space, creating the new space if necessary. */
5375 char *name
, c
, *space_name
, *save_s
;
5377 sd_chain_struct
*sd_chain
;
5379 if (within_procedure
)
5381 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5382 ignore_rest_of_line ();
5386 /* Check for some of the predefined spaces. FIXME: most of the code
5387 below is repeated several times, can we extract the common parts
5388 and place them into a subroutine or something similar? */
5389 if (strncasecmp (input_line_pointer
, "$text$", 6) == 0)
5391 input_line_pointer
+= 6;
5392 sd_chain
= is_defined_space ("$TEXT$");
5393 if (sd_chain
== NULL
)
5394 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5395 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5396 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5398 current_space
= sd_chain
;
5400 /* No need to align if we are already there. */
5401 if (now_seg
!= text_section
)
5402 pa_align_subseg (now_seg
, now_subseg
);
5404 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5407 = pa_subsegment_to_subspace (text_section
,
5408 sd_chain
->sd_last_subseg
);
5409 demand_empty_rest_of_line ();
5412 if (strncasecmp (input_line_pointer
, "$private$", 9) == 0)
5414 input_line_pointer
+= 9;
5415 sd_chain
= is_defined_space ("$PRIVATE$");
5416 if (sd_chain
== NULL
)
5417 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5418 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5419 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5421 current_space
= sd_chain
;
5423 /* No need to align if we are already there. */
5424 if (now_seg
!= data_section
)
5425 pa_align_subseg (now_seg
, now_subseg
);
5427 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5429 = pa_subsegment_to_subspace (data_section
,
5430 sd_chain
->sd_last_subseg
);
5431 demand_empty_rest_of_line ();
5434 if (!strncasecmp (input_line_pointer
,
5435 GDB_DEBUG_SPACE_NAME
,
5436 strlen (GDB_DEBUG_SPACE_NAME
)))
5438 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5439 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5440 if (sd_chain
== NULL
)
5441 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5442 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5443 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5445 current_space
= sd_chain
;
5448 asection
*gdb_section
5449 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5451 /* No need to align if we are already there. */
5452 if (strcmp (segment_name (now_seg
), GDB_DEBUG_SPACE_NAME
) != 0)
5453 pa_align_subseg (now_seg
, now_subseg
);
5455 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5457 = pa_subsegment_to_subspace (gdb_section
,
5458 sd_chain
->sd_last_subseg
);
5460 demand_empty_rest_of_line ();
5464 /* It could be a space specified by number. */
5466 save_s
= input_line_pointer
;
5467 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5469 if (sd_chain
= pa_find_space_by_number (temp
))
5471 current_space
= sd_chain
;
5473 if (now_seg
!= sd_chain
->sd_seg
)
5474 pa_align_subseg (now_seg
, now_subseg
);
5475 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5477 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5478 sd_chain
->sd_last_subseg
);
5479 demand_empty_rest_of_line ();
5484 /* Not a number, attempt to create a new space. */
5486 input_line_pointer
= save_s
;
5487 name
= input_line_pointer
;
5488 c
= get_symbol_end ();
5489 space_name
= xmalloc (strlen (name
) + 1);
5490 strcpy (space_name
, name
);
5491 *input_line_pointer
= c
;
5493 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5494 current_space
= sd_chain
;
5496 if (now_seg
!= sd_chain
->sd_seg
)
5497 pa_align_subseg (now_seg
, now_subseg
);
5498 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5499 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5500 sd_chain
->sd_last_subseg
);
5501 demand_empty_rest_of_line ();
5506 /* Switch to a new space. (I think). FIXME. */
5515 sd_chain_struct
*space
;
5517 name
= input_line_pointer
;
5518 c
= get_symbol_end ();
5519 space
= is_defined_space (name
);
5523 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5526 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5528 *input_line_pointer
= c
;
5529 demand_empty_rest_of_line ();
5533 /* If VALUE is an exact power of two between zero and 2^31, then
5534 return log2 (VALUE). Else return -1. */
5542 while ((1 << shift
) != value
&& shift
< 32)
5551 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5552 given subspace, creating the new subspace if necessary.
5554 FIXME. Should mirror pa_space more closely, in particular how
5555 they're broken up into subroutines. */
5558 pa_subspace (unused
)
5561 char *name
, *ss_name
, *alias
, c
;
5562 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5563 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5564 sd_chain_struct
*space
;
5565 ssd_chain_struct
*ssd
;
5568 if (within_procedure
)
5570 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5571 ignore_rest_of_line ();
5575 name
= input_line_pointer
;
5576 c
= get_symbol_end ();
5577 ss_name
= xmalloc (strlen (name
) + 1);
5578 strcpy (ss_name
, name
);
5579 *input_line_pointer
= c
;
5581 /* Load default values. */
5594 space
= current_space
;
5595 ssd
= is_defined_subspace (ss_name
);
5596 /* Allow user to override the builtin attributes of subspaces. But
5597 only allow the attributes to be changed once! */
5598 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5600 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5601 if (!is_end_of_statement ())
5602 as_warn ("Parameters of an existing subspace can\'t be modified");
5603 demand_empty_rest_of_line ();
5608 /* A new subspace. Load default values if it matches one of
5609 the builtin subspaces. */
5611 while (pa_def_subspaces
[i
].name
)
5613 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5615 loadable
= pa_def_subspaces
[i
].loadable
;
5616 common
= pa_def_subspaces
[i
].common
;
5617 dup_common
= pa_def_subspaces
[i
].dup_common
;
5618 code_only
= pa_def_subspaces
[i
].code_only
;
5619 zero
= pa_def_subspaces
[i
].zero
;
5620 space_index
= pa_def_subspaces
[i
].space_index
;
5621 alignment
= pa_def_subspaces
[i
].alignment
;
5622 quadrant
= pa_def_subspaces
[i
].quadrant
;
5623 access
= pa_def_subspaces
[i
].access
;
5624 sort
= pa_def_subspaces
[i
].sort
;
5625 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5626 alias
= pa_def_subspaces
[i
].alias
;
5633 /* We should be working with a new subspace now. Fill in
5634 any information as specified by the user. */
5635 if (!is_end_of_statement ())
5637 input_line_pointer
++;
5638 while (!is_end_of_statement ())
5640 name
= input_line_pointer
;
5641 c
= get_symbol_end ();
5642 if ((strncasecmp (name
, "QUAD", 4) == 0))
5644 *input_line_pointer
= c
;
5645 input_line_pointer
++;
5646 quadrant
= get_absolute_expression ();
5648 else if ((strncasecmp (name
, "ALIGN", 5) == 0))
5650 *input_line_pointer
= c
;
5651 input_line_pointer
++;
5652 alignment
= get_absolute_expression ();
5653 if (log2 (alignment
) == -1)
5655 as_bad ("Alignment must be a power of 2");
5659 else if ((strncasecmp (name
, "ACCESS", 6) == 0))
5661 *input_line_pointer
= c
;
5662 input_line_pointer
++;
5663 access
= get_absolute_expression ();
5665 else if ((strncasecmp (name
, "SORT", 4) == 0))
5667 *input_line_pointer
= c
;
5668 input_line_pointer
++;
5669 sort
= get_absolute_expression ();
5671 else if ((strncasecmp (name
, "CODE_ONLY", 9) == 0))
5673 *input_line_pointer
= c
;
5676 else if ((strncasecmp (name
, "UNLOADABLE", 10) == 0))
5678 *input_line_pointer
= c
;
5681 else if ((strncasecmp (name
, "COMMON", 6) == 0))
5683 *input_line_pointer
= c
;
5686 else if ((strncasecmp (name
, "DUP_COMM", 8) == 0))
5688 *input_line_pointer
= c
;
5691 else if ((strncasecmp (name
, "ZERO", 4) == 0))
5693 *input_line_pointer
= c
;
5696 else if ((strncasecmp (name
, "FIRST", 5) == 0))
5697 as_bad ("FIRST not supported as a .SUBSPACE argument");
5699 as_bad ("Invalid .SUBSPACE argument");
5700 if (!is_end_of_statement ())
5701 input_line_pointer
++;
5705 /* Compute a reasonable set of BFD flags based on the information
5706 in the .subspace directive. */
5707 applicable
= bfd_applicable_section_flags (stdoutput
);
5710 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5713 if (common
|| dup_common
)
5714 flags
|= SEC_IS_COMMON
;
5716 /* This is a zero-filled subspace (eg BSS). */
5720 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5721 applicable
&= flags
;
5723 /* If this is an existing subspace, then we want to use the
5724 segment already associated with the subspace.
5726 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5727 lots of sections. It might be a problem in the PA ELF
5728 code, I do not know yet. For now avoid creating anything
5729 but the "standard" sections for ELF. */
5731 section
= ssd
->ssd_seg
;
5733 section
= subseg_new (alias
, 0);
5734 else if (! alias
&& USE_ALIASES
)
5736 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5737 demand_empty_rest_of_line ();
5741 section
= subseg_new (ss_name
, 0);
5743 /* Now set the flags. */
5744 bfd_set_section_flags (stdoutput
, section
, applicable
);
5746 /* Record any alignment request for this section. */
5747 record_alignment (section
, log2 (alignment
));
5749 /* Set the starting offset for this section. */
5750 bfd_set_section_vma (stdoutput
, section
,
5751 pa_subspace_start (space
, quadrant
));
5753 /* Now that all the flags are set, update an existing subspace,
5754 or create a new one. */
5757 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5758 code_only
, common
, dup_common
,
5759 sort
, zero
, access
, space_index
,
5760 alignment
, quadrant
,
5763 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5765 dup_common
, zero
, sort
,
5766 access
, space_index
,
5767 alignment
, quadrant
, section
);
5769 demand_empty_rest_of_line ();
5770 current_subspace
->ssd_seg
= section
;
5771 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5773 SUBSPACE_DEFINED (current_subspace
) = 1;
5778 /* Create default space and subspace dictionaries. */
5785 space_dict_root
= NULL
;
5786 space_dict_last
= NULL
;
5789 while (pa_def_spaces
[i
].name
)
5793 /* Pick the right name to use for the new section. */
5794 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5795 name
= pa_def_spaces
[i
].alias
;
5797 name
= pa_def_spaces
[i
].name
;
5799 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5800 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5801 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5802 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5803 pa_def_spaces
[i
].segment
, 0);
5808 while (pa_def_subspaces
[i
].name
)
5811 int applicable
, subsegment
;
5812 asection
*segment
= NULL
;
5813 sd_chain_struct
*space
;
5815 /* Pick the right name for the new section and pick the right
5816 subsegment number. */
5817 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5819 name
= pa_def_subspaces
[i
].alias
;
5820 subsegment
= pa_def_subspaces
[i
].subsegment
;
5824 name
= pa_def_subspaces
[i
].name
;
5828 /* Create the new section. */
5829 segment
= subseg_new (name
, subsegment
);
5832 /* For SOM we want to replace the standard .text, .data, and .bss
5833 sections with our own. */
5834 if (! strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && ! USE_ALIASES
)
5836 text_section
= segment
;
5837 applicable
= bfd_applicable_section_flags (stdoutput
);
5838 bfd_set_section_flags (stdoutput
, text_section
,
5839 applicable
& (SEC_ALLOC
| SEC_LOAD
5840 | SEC_RELOC
| SEC_CODE
5842 | SEC_HAS_CONTENTS
));
5844 else if (! strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && ! USE_ALIASES
)
5846 data_section
= segment
;
5847 applicable
= bfd_applicable_section_flags (stdoutput
);
5848 bfd_set_section_flags (stdoutput
, data_section
,
5849 applicable
& (SEC_ALLOC
| SEC_LOAD
5851 | SEC_HAS_CONTENTS
));
5855 else if (! strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && ! USE_ALIASES
)
5857 bss_section
= segment
;
5858 applicable
= bfd_applicable_section_flags (stdoutput
);
5859 bfd_set_section_flags (stdoutput
, bss_section
,
5860 applicable
& SEC_ALLOC
);
5863 /* Find the space associated with this subspace. */
5864 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5865 def_space_index
].segment
);
5868 as_fatal ("Internal error: Unable to find containing space for %s.",
5869 pa_def_subspaces
[i
].name
);
5872 create_new_subspace (space
, name
,
5873 pa_def_subspaces
[i
].loadable
,
5874 pa_def_subspaces
[i
].code_only
,
5875 pa_def_subspaces
[i
].common
,
5876 pa_def_subspaces
[i
].dup_common
,
5877 pa_def_subspaces
[i
].zero
,
5878 pa_def_subspaces
[i
].sort
,
5879 pa_def_subspaces
[i
].access
,
5880 pa_def_subspaces
[i
].space_index
,
5881 pa_def_subspaces
[i
].alignment
,
5882 pa_def_subspaces
[i
].quadrant
,
5890 /* Create a new space NAME, with the appropriate flags as defined
5891 by the given parameters.
5893 Add the new space to the space dictionary chain in numerical
5894 order as defined by the SORT entries. */
5896 static sd_chain_struct
*
5897 create_new_space (name
, spnum
, loadable
, defined
, private,
5898 sort
, seg
, user_defined
)
5908 sd_chain_struct
*chain_entry
;
5910 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5912 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5915 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5916 strcpy (SPACE_NAME (chain_entry
), name
);
5917 SPACE_NAME_INDEX (chain_entry
) = 0;
5918 SPACE_LOADABLE (chain_entry
) = loadable
;
5919 SPACE_DEFINED (chain_entry
) = defined
;
5920 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5921 SPACE_PRIVATE (chain_entry
) = private;
5922 SPACE_SPNUM (chain_entry
) = spnum
;
5923 SPACE_SORT (chain_entry
) = sort
;
5925 chain_entry
->sd_seg
= seg
;
5926 chain_entry
->sd_last_subseg
= -1;
5927 chain_entry
->sd_next
= NULL
;
5929 /* Find spot for the new space based on its sort key. */
5930 if (!space_dict_last
)
5931 space_dict_last
= chain_entry
;
5933 if (space_dict_root
== NULL
)
5934 space_dict_root
= chain_entry
;
5937 sd_chain_struct
*chain_pointer
;
5938 sd_chain_struct
*prev_chain_pointer
;
5940 chain_pointer
= space_dict_root
;
5941 prev_chain_pointer
= NULL
;
5943 while (chain_pointer
)
5945 if (SPACE_SORT (chain_pointer
) <= SPACE_SORT (chain_entry
))
5947 prev_chain_pointer
= chain_pointer
;
5948 chain_pointer
= chain_pointer
->sd_next
;
5954 /* At this point we've found the correct place to add the new
5955 entry. So add it and update the linked lists as appropriate. */
5956 if (prev_chain_pointer
)
5958 chain_entry
->sd_next
= chain_pointer
;
5959 prev_chain_pointer
->sd_next
= chain_entry
;
5963 space_dict_root
= chain_entry
;
5964 chain_entry
->sd_next
= chain_pointer
;
5967 if (chain_entry
->sd_next
== NULL
)
5968 space_dict_last
= chain_entry
;
5971 /* This is here to catch predefined spaces which do not get
5972 modified by the user's input. Another call is found at
5973 the bottom of pa_parse_space_stmt to handle cases where
5974 the user modifies a predefined space. */
5975 #ifdef obj_set_section_attributes
5976 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5982 /* Create a new subspace NAME, with the appropriate flags as defined
5983 by the given parameters.
5985 Add the new subspace to the subspace dictionary chain in numerical
5986 order as defined by the SORT entries. */
5988 static ssd_chain_struct
*
5989 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5990 dup_common
, is_zero
, sort
, access
, space_index
,
5991 alignment
, quadrant
, seg
)
5992 sd_chain_struct
*space
;
5994 char loadable
, code_only
, common
, dup_common
, is_zero
;
6002 ssd_chain_struct
*chain_entry
;
6004 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
6006 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
6008 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
6009 strcpy (SUBSPACE_NAME (chain_entry
), name
);
6011 SUBSPACE_ACCESS (chain_entry
) = access
;
6012 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
6013 SUBSPACE_COMMON (chain_entry
) = common
;
6014 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
6015 SUBSPACE_SORT (chain_entry
) = sort
;
6016 SUBSPACE_CODE_ONLY (chain_entry
) = code_only
;
6017 SUBSPACE_ALIGN (chain_entry
) = alignment
;
6018 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
6019 SUBSPACE_SUBSPACE_START (chain_entry
) = pa_subspace_start (space
, quadrant
);
6020 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
6021 SUBSPACE_ZERO (chain_entry
) = is_zero
;
6023 /* Initialize subspace_defined. When we hit a .subspace directive
6024 we'll set it to 1 which "locks-in" the subspace attributes. */
6025 SUBSPACE_DEFINED (chain_entry
) = 0;
6027 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
6028 chain_entry
->ssd_seg
= seg
;
6029 chain_entry
->ssd_last_align
= 1;
6030 chain_entry
->ssd_next
= NULL
;
6032 /* Find spot for the new subspace based on its sort key. */
6033 if (space
->sd_subspaces
== NULL
)
6034 space
->sd_subspaces
= chain_entry
;
6037 ssd_chain_struct
*chain_pointer
;
6038 ssd_chain_struct
*prev_chain_pointer
;
6040 chain_pointer
= space
->sd_subspaces
;
6041 prev_chain_pointer
= NULL
;
6043 while (chain_pointer
)
6045 if (SUBSPACE_SORT (chain_pointer
) <= SUBSPACE_SORT (chain_entry
))
6047 prev_chain_pointer
= chain_pointer
;
6048 chain_pointer
= chain_pointer
->ssd_next
;
6055 /* Now we have somewhere to put the new entry. Insert it and update
6057 if (prev_chain_pointer
)
6059 chain_entry
->ssd_next
= chain_pointer
;
6060 prev_chain_pointer
->ssd_next
= chain_entry
;
6064 space
->sd_subspaces
= chain_entry
;
6065 chain_entry
->ssd_next
= chain_pointer
;
6069 #ifdef obj_set_subsection_attributes
6070 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
6078 /* Update the information for the given subspace based upon the
6079 various arguments. Return the modified subspace chain entry. */
6081 static ssd_chain_struct
*
6082 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
6083 zero
, access
, space_index
, alignment
, quadrant
, section
)
6084 sd_chain_struct
*space
;
6098 ssd_chain_struct
*chain_entry
;
6100 if ((chain_entry
= is_defined_subspace (name
)))
6102 SUBSPACE_ACCESS (chain_entry
) = access
;
6103 SUBSPACE_LOADABLE (chain_entry
) = loadable
;
6104 SUBSPACE_COMMON (chain_entry
) = common
;
6105 SUBSPACE_DUP_COMM (chain_entry
) = dup_common
;
6106 SUBSPACE_CODE_ONLY (chain_entry
) = 1;
6107 SUBSPACE_SORT (chain_entry
) = sort
;
6108 SUBSPACE_ALIGN (chain_entry
) = alignment
;
6109 SUBSPACE_QUADRANT (chain_entry
) = quadrant
;
6110 SUBSPACE_SPACE_INDEX (chain_entry
) = space_index
;
6111 SUBSPACE_ZERO (chain_entry
) = zero
;
6116 #ifdef obj_set_subsection_attributes
6117 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
6125 /* Return the space chain entry for the space with the name NAME or
6126 NULL if no such space exists. */
6128 static sd_chain_struct
*
6129 is_defined_space (name
)
6132 sd_chain_struct
*chain_pointer
;
6134 for (chain_pointer
= space_dict_root
;
6136 chain_pointer
= chain_pointer
->sd_next
)
6138 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
6139 return chain_pointer
;
6142 /* No mapping from segment to space was found. Return NULL. */
6146 /* Find and return the space associated with the given seg. If no mapping
6147 from the given seg to a space is found, then return NULL.
6149 Unlike subspaces, the number of spaces is not expected to grow much,
6150 so a linear exhaustive search is OK here. */
6152 static sd_chain_struct
*
6153 pa_segment_to_space (seg
)
6156 sd_chain_struct
*space_chain
;
6158 /* Walk through each space looking for the correct mapping. */
6159 for (space_chain
= space_dict_root
;
6161 space_chain
= space_chain
->sd_next
)
6163 if (space_chain
->sd_seg
== seg
)
6167 /* Mapping was not found. Return NULL. */
6171 /* Return the space chain entry for the subspace with the name NAME or
6172 NULL if no such subspace exists.
6174 Uses a linear search through all the spaces and subspaces, this may
6175 not be appropriate if we ever being placing each function in its
6178 static ssd_chain_struct
*
6179 is_defined_subspace (name
)
6182 sd_chain_struct
*space_chain
;
6183 ssd_chain_struct
*subspace_chain
;
6185 /* Walk through each space. */
6186 for (space_chain
= space_dict_root
;
6188 space_chain
= space_chain
->sd_next
)
6190 /* Walk through each subspace looking for a name which matches. */
6191 for (subspace_chain
= space_chain
->sd_subspaces
;
6193 subspace_chain
= subspace_chain
->ssd_next
)
6194 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
6195 return subspace_chain
;
6198 /* Subspace wasn't found. Return NULL. */
6202 /* Find and return the subspace associated with the given seg. If no
6203 mapping from the given seg to a subspace is found, then return NULL.
6205 If we ever put each procedure/function within its own subspace
6206 (to make life easier on the compiler and linker), then this will have
6207 to become more efficient. */
6209 static ssd_chain_struct
*
6210 pa_subsegment_to_subspace (seg
, subseg
)
6214 sd_chain_struct
*space_chain
;
6215 ssd_chain_struct
*subspace_chain
;
6217 /* Walk through each space. */
6218 for (space_chain
= space_dict_root
;
6220 space_chain
= space_chain
->sd_next
)
6222 if (space_chain
->sd_seg
== seg
)
6224 /* Walk through each subspace within each space looking for
6225 the correct mapping. */
6226 for (subspace_chain
= space_chain
->sd_subspaces
;
6228 subspace_chain
= subspace_chain
->ssd_next
)
6229 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6230 return subspace_chain
;
6234 /* No mapping from subsegment to subspace found. Return NULL. */
6238 /* Given a number, try and find a space with the name number.
6240 Return a pointer to a space dictionary chain entry for the space
6241 that was found or NULL on failure. */
6243 static sd_chain_struct
*
6244 pa_find_space_by_number (number
)
6247 sd_chain_struct
*space_chain
;
6249 for (space_chain
= space_dict_root
;
6251 space_chain
= space_chain
->sd_next
)
6253 if (SPACE_SPNUM (space_chain
) == number
)
6257 /* No appropriate space found. Return NULL. */
6261 /* Return the starting address for the given subspace. If the starting
6262 address is unknown then return zero. */
6265 pa_subspace_start (space
, quadrant
)
6266 sd_chain_struct
*space
;
6269 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6270 is not correct for the PA OSF1 port. */
6271 if ((strcasecmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6273 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6279 /* FIXME. Needs documentation. */
6281 pa_next_subseg (space
)
6282 sd_chain_struct
*space
;
6285 space
->sd_last_subseg
++;
6286 return space
->sd_last_subseg
;
6289 /* Helper function for pa_stringer. Used to find the end of
6296 unsigned int c
= *s
& CHAR_MASK
;
6308 /* Handle a .STRING type pseudo-op. */
6311 pa_stringer (append_zero
)
6314 char *s
, num_buf
[4];
6318 /* Preprocess the string to handle PA-specific escape sequences.
6319 For example, \xDD where DD is a hexidecimal number should be
6320 changed to \OOO where OOO is an octal number. */
6322 /* Skip the opening quote. */
6323 s
= input_line_pointer
+ 1;
6325 while (is_a_char (c
= pa_stringer_aux (s
++)))
6332 /* Handle \x<num>. */
6335 unsigned int number
;
6340 /* Get pas the 'x'. */
6342 for (num_digit
= 0, number
= 0, dg
= *s
;
6344 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6345 || (dg
>= 'A' && dg
<= 'F'));
6349 number
= number
* 16 + dg
- '0';
6350 else if (dg
>= 'a' && dg
<= 'f')
6351 number
= number
* 16 + dg
- 'a' + 10;
6353 number
= number
* 16 + dg
- 'A' + 10;
6363 sprintf (num_buf
, "%02o", number
);
6366 sprintf (num_buf
, "%03o", number
);
6369 for (i
= 0; i
<= num_digit
; i
++)
6370 s_start
[i
] = num_buf
[i
];
6374 /* This might be a "\"", skip over the escaped char. */
6381 stringer (append_zero
);
6382 pa_undefine_label ();
6385 /* Handle a .VERSION pseudo-op. */
6392 pa_undefine_label ();
6395 /* Just like a normal cons, but when finished we have to undefine
6396 the latest space label. */
6403 pa_undefine_label ();
6406 /* Switch to the data space. As usual delete our label. */
6413 pa_undefine_label ();
6416 /* FIXME. What's the purpose of this pseudo-op? */
6422 pa_undefine_label ();
6425 /* Like float_cons, but we need to undefine our label. */
6428 pa_float_cons (float_type
)
6431 float_cons (float_type
);
6432 pa_undefine_label ();
6435 /* Like s_fill, but delete our label when finished. */
6442 pa_undefine_label ();
6445 /* Like lcomm, but delete our label when finished. */
6448 pa_lcomm (needs_align
)
6451 s_lcomm (needs_align
);
6452 pa_undefine_label ();
6455 /* Like lsym, but delete our label when finished. */
6462 pa_undefine_label ();
6465 /* Switch to the text space. Like s_text, but delete our
6466 label when finished. */
6472 pa_undefine_label ();
6475 /* On the PA relocations which involve function symbols must not be
6476 adjusted. This so that the linker can know when/how to create argument
6477 relocation stubs for indirect calls and calls to static functions.
6479 FIXME. Also reject R_HPPA relocations which are 32 bits
6480 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6481 needs to generate relocations to push the addend and symbol value
6482 onto the stack, add them, then pop the value off the stack and
6483 use it in a relocation -- yuk. */
6486 hppa_fix_adjustable (fixp
)
6489 struct hppa_fix_struct
*hppa_fix
;
6491 hppa_fix
= fixp
->tc_fix_data
;
6493 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6496 if (fixp
->fx_addsy
== 0
6497 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6503 /* Now for some ELF specific code. FIXME. */
6505 static symext_chainS
*symext_rootP
;
6506 static symext_chainS
*symext_lastP
;
6508 /* Do any symbol processing requested by the target-cpu or target-format. */
6511 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6513 elf_symbol_type
*symbolP
;
6516 symext_chainS
*symextP
;
6517 unsigned int arg_reloc
;
6519 /* Only functions can have argument relocations. */
6520 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6523 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6525 /* If there are no argument relocation bits, then no relocation is
6526 necessary. Do not add this to the symextn section. */
6530 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6532 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6533 symextP
[0].next
= &symextP
[1];
6535 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6536 symextP
[1].next
= NULL
;
6538 if (symext_rootP
== NULL
)
6540 symext_rootP
= &symextP
[0];
6541 symext_lastP
= &symextP
[1];
6545 symext_lastP
->next
= &symextP
[0];
6546 symext_lastP
= &symextP
[1];
6550 /* Make sections needed by the target cpu and/or target format. */
6552 hppa_tc_make_sections (abfd
)
6555 symext_chainS
*symextP
;
6557 asection
*symextn_sec
;
6558 segT save_seg
= now_seg
;
6559 subsegT save_subseg
= now_subseg
;
6561 /* Build the symbol extension section. */
6562 hppa_tc_make_symextn_section ();
6564 /* Force some calculation to occur. */
6565 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6567 hppa_elf_stub_finish (abfd
);
6569 /* If no symbols for the symbol extension section, then stop now. */
6570 if (symext_rootP
== NULL
)
6573 /* Count the number of symbols for the symbol extension section. */
6574 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6577 size
= sizeof (symext_entryS
) * n
;
6579 /* Switch to the symbol extension section. */
6580 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6582 frag_wane (frag_now
);
6585 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6588 int *symtab_map
= elf_sym_extra (abfd
);
6591 /* First, patch the symbol extension record to reflect the true
6592 symbol table index. */
6594 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6596 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6597 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6601 ptr
= frag_more (sizeof (symextP
->entry
));
6602 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6605 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6606 frag_wane (frag_now
);
6608 /* Switch back to the original segment. */
6609 subseg_set (save_seg
, save_subseg
);
6614 /* Make the symbol extension section. */
6617 hppa_tc_make_symextn_section ()
6621 symext_chainS
*symextP
;
6625 segT save_seg
= now_seg
;
6626 subsegT save_subseg
= now_subseg
;
6628 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6631 size
= sizeof (symext_entryS
) * n
;
6633 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6635 bfd_set_section_flags (stdoutput
, symextn_sec
,
6636 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6637 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6639 /* Now, switch back to the original segment. */
6640 subseg_set (save_seg
, save_subseg
);
6644 /* Build the symbol extension section. */
6647 pa_build_symextn_section ()
6650 asection
*save_seg
= now_seg
;
6651 subsegT subseg
= (subsegT
) 0;
6652 subsegT save_subseg
= now_subseg
;
6654 seg
= subseg_new (".hppa_symextn", subseg
);
6655 bfd_set_section_flags (stdoutput
,
6657 SEC_HAS_CONTENTS
| SEC_READONLY
6658 | SEC_ALLOC
| SEC_LOAD
);
6660 subseg_set (save_seg
, save_subseg
);
6664 /* For ELF, this function serves one purpose: to setup the st_size
6665 field of STT_FUNC symbols. To do this, we need to scan the
6666 call_info structure list, determining st_size in one of two possible
6669 1. call_info->start_frag->fr_fix has the size of the fragment.
6670 This approach assumes that the function was built into a
6671 single fragment. This works for most cases, but might fail.
6672 For example, if there was a segment change in the middle of
6675 2. The st_size field is the difference in the addresses of the
6676 call_info->start_frag->fr_address field and the fr_address
6677 field of the next fragment with fr_type == rs_fill and
6681 elf_hppa_final_processing ()
6683 struct call_info
*call_info_pointer
;
6685 for (call_info_pointer
= call_info_root
;
6687 call_info_pointer
= call_info_pointer
->ci_next
)
6689 elf_symbol_type
*esym
6690 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6691 esym
->internal_elf_sym
.st_size
=
6692 S_GET_VALUE (call_info_pointer
->end_symbol
)
6693 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;