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
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
63 /* Some local functions only used by ELF. */
64 static void pa_build_symextn_section
PARAMS ((void));
65 static void hppa_tc_make_symextn_section
PARAMS ((void));
69 /* Names of various debugging spaces/subspaces. */
70 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
71 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
72 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
73 #define UNWIND_SECTION_NAME "$UNWIND$"
75 /* Object file formats specify relocation types. */
76 typedef int reloc_type
;
78 /* SOM objects can have both a version string and a copyright string. */
79 #define obj_version obj_som_version
80 #define obj_copyright obj_som_copyright
82 /* Do not use space aliases. */
85 /* How to generate a relocation. */
86 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
88 /* Object file formats specify BFD symbol types. */
89 typedef som_symbol_type obj_symbol_type
;
92 /* Various structures and types used internally in tc-hppa.c. */
94 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
98 unsigned int cannot_unwind
:1;
99 unsigned int millicode
:1;
100 unsigned int millicode_save_rest
:1;
101 unsigned int region_desc
:2;
102 unsigned int save_sr
:2;
103 unsigned int entry_fr
:4;
104 unsigned int entry_gr
:5;
105 unsigned int args_stored
:1;
106 unsigned int call_fr
:5;
107 unsigned int call_gr
:5;
108 unsigned int save_sp
:1;
109 unsigned int save_rp
:1;
110 unsigned int save_rp_in_frame
:1;
111 unsigned int extn_ptr_defined
:1;
112 unsigned int cleanup_defined
:1;
114 unsigned int hpe_interrupt_marker
:1;
115 unsigned int hpux_interrupt_marker
:1;
116 unsigned int reserved
:3;
117 unsigned int frame_size
:27;
122 /* Starting and ending offsets of the region described by
124 unsigned int start_offset
;
125 unsigned int end_offset
;
126 struct unwind_desc descriptor
;
129 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
130 control the entry and exit code they generate. It is also used in
131 creation of the correct stack unwind descriptors.
133 NOTE: GAS does not support .enter and .leave for the generation of
134 prologues and epilogues. FIXME.
136 The fields in structure roughly correspond to the arguments available on the
137 .callinfo pseudo-op. */
141 /* The unwind descriptor being built. */
142 struct unwind_table ci_unwind
;
144 /* Name of this function. */
145 symbolS
*start_symbol
;
147 /* (temporary) symbol used to mark the end of this function. */
150 /* Next entry in the chain. */
151 struct call_info
*ci_next
;
154 /* Operand formats for FP instructions. Note not all FP instructions
155 allow all four formats to be used (for example fmpysub only allows
159 SGL
, DBL
, ILLEGAL_FMT
, QUAD
163 /* This fully describes the symbol types which may be attached to
164 an EXPORT or IMPORT directive. Only SOM uses this formation
165 (ELF has no need for it). */
169 SYMBOL_TYPE_ABSOLUTE
,
173 SYMBOL_TYPE_MILLICODE
,
175 SYMBOL_TYPE_PRI_PROG
,
176 SYMBOL_TYPE_SEC_PROG
,
180 /* This structure contains information needed to assemble
181 individual instructions. */
184 /* Holds the opcode after parsing by pa_ip. */
185 unsigned long opcode
;
187 /* Holds an expression associated with the current instruction. */
190 /* Does this instruction use PC-relative addressing. */
193 /* Floating point formats for operand1 and operand2. */
194 fp_operand_format fpof1
;
195 fp_operand_format fpof2
;
197 /* Holds the field selector for this instruction
198 (for example L%, LR%, etc). */
201 /* Holds any argument relocation bits associated with this
202 instruction. (instruction should be some sort of call). */
205 /* The format specification for this instruction. */
208 /* The relocation (if any) associated with this instruction. */
212 /* PA-89 floating point registers are arranged like this:
215 +--------------+--------------+
216 | 0 or 16L | 16 or 16R |
217 +--------------+--------------+
218 | 1 or 17L | 17 or 17R |
219 +--------------+--------------+
227 +--------------+--------------+
228 | 14 or 30L | 30 or 30R |
229 +--------------+--------------+
230 | 15 or 31L | 31 or 31R |
231 +--------------+--------------+
234 The following is a version of pa_parse_number that
235 handles the L/R notation and returns the correct
236 value to put into the instruction register field.
237 The correct value to put into the instruction is
238 encoded in the structure 'pa_89_fp_reg_struct'. */
240 struct pa_89_fp_reg_struct
242 /* The register number. */
249 /* Additional information needed to build argument relocation stubs. */
252 /* The argument relocation specification. */
253 unsigned int arg_reloc
;
255 /* Number of arguments. */
256 unsigned int arg_count
;
259 /* This structure defines an entry in the subspace dictionary
262 struct subspace_dictionary_chain
264 /* Nonzero if this space has been defined by the user code. */
265 unsigned int ssd_defined
;
267 /* Name of this subspace. */
270 /* GAS segment and subsegment associated with this subspace. */
274 /* Next space in the subspace dictionary chain. */
275 struct subspace_dictionary_chain
*ssd_next
;
278 typedef struct subspace_dictionary_chain ssd_chain_struct
;
280 /* This structure defines an entry in the subspace dictionary
283 struct space_dictionary_chain
285 /* Nonzero if this space has been defined by the user code or
286 as a default space. */
287 unsigned int sd_defined
;
289 /* Nonzero if this spaces has been defined by the user code. */
290 unsigned int sd_user_defined
;
292 /* The space number (or index). */
293 unsigned int sd_spnum
;
295 /* The name of this subspace. */
298 /* GAS segment to which this subspace corresponds. */
301 /* Current subsegment number being used. */
304 /* The chain of subspaces contained within this space. */
305 ssd_chain_struct
*sd_subspaces
;
307 /* The next entry in the space dictionary chain. */
308 struct space_dictionary_chain
*sd_next
;
311 typedef struct space_dictionary_chain sd_chain_struct
;
313 /* Structure for previous label tracking. Needed so that alignments,
314 callinfo declarations, etc can be easily attached to a particular
316 typedef struct label_symbol_struct
318 struct symbol
*lss_label
;
319 sd_chain_struct
*lss_space
;
320 struct label_symbol_struct
*lss_next
;
324 /* This structure defines attributes of the default subspace
325 dictionary entries. */
327 struct default_subspace_dict
329 /* Name of the subspace. */
332 /* FIXME. Is this still needed? */
335 /* Nonzero if this subspace is loadable. */
338 /* Nonzero if this subspace contains only code. */
341 /* Nonzero if this is a common subspace. */
344 /* Nonzero if this is a common subspace which allows symbols
345 to be multiply defined. */
348 /* Nonzero if this subspace should be zero filled. */
351 /* Sort key for this subspace. */
354 /* Access control bits for this subspace. Can represent RWX access
355 as well as privilege level changes for gateways. */
358 /* Index of containing space. */
361 /* Alignment (in bytes) of this subspace. */
364 /* Quadrant within space where this subspace should be loaded. */
367 /* An index into the default spaces array. */
370 /* An alias for this section (or NULL if no alias exists). */
373 /* Subsegment associated with this subspace. */
377 /* This structure defines attributes of the default space
378 dictionary entries. */
380 struct default_space_dict
382 /* Name of the space. */
385 /* Space number. It is possible to identify spaces within
386 assembly code numerically! */
389 /* Nonzero if this space is loadable. */
392 /* Nonzero if this space is "defined". FIXME is still needed */
395 /* Nonzero if this space can not be shared. */
398 /* Sort key for this space. */
401 /* Segment associated with this space. */
404 /* An alias for this section (or NULL if no alias exists). */
408 /* Extra information needed to perform fixups (relocations) on the PA. */
409 struct hppa_fix_struct
411 /* The field selector. */
412 enum hppa_reloc_field_selector_type fx_r_field
;
417 /* Format of fixup. */
420 /* Argument relocation bits. */
423 /* The unwind descriptor associated with this fixup. */
427 /* Structure to hold information about predefined registers. */
435 /* This structure defines the mapping from a FP condition string
436 to a condition number which can be recorded in an instruction. */
443 /* This structure defines a mapping from a field selector
444 string to a field selector type. */
445 struct selector_entry
451 /* Prototypes for functions local to tc-hppa.c. */
453 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
454 static void pa_cons
PARAMS ((int));
455 static void pa_data
PARAMS ((int));
456 static void pa_float_cons
PARAMS ((int));
457 static void pa_fill
PARAMS ((int));
458 static void pa_lcomm
PARAMS ((int));
459 static void pa_lsym
PARAMS ((int));
460 static void pa_stringer
PARAMS ((int));
461 static void pa_text
PARAMS ((int));
462 static void pa_version
PARAMS ((int));
463 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
464 static int get_expression
PARAMS ((char *));
465 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
466 static int evaluate_absolute
PARAMS ((struct pa_it
*));
467 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
468 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
469 static int pa_parse_nullif
PARAMS ((char **));
470 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
471 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
472 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
473 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
474 static void pa_block
PARAMS ((int));
475 static void pa_call
PARAMS ((int));
476 static void pa_call_args
PARAMS ((struct call_desc
*));
477 static void pa_callinfo
PARAMS ((int));
478 static void pa_code
PARAMS ((int));
479 static void pa_comm
PARAMS ((int));
480 static void pa_copyright
PARAMS ((int));
481 static void pa_end
PARAMS ((int));
482 static void pa_enter
PARAMS ((int));
483 static void pa_entry
PARAMS ((int));
484 static void pa_equ
PARAMS ((int));
485 static void pa_exit
PARAMS ((int));
486 static void pa_export
PARAMS ((int));
487 static void pa_type_args
PARAMS ((symbolS
*, int));
488 static void pa_import
PARAMS ((int));
489 static void pa_label
PARAMS ((int));
490 static void pa_leave
PARAMS ((int));
491 static void pa_origin
PARAMS ((int));
492 static void pa_proc
PARAMS ((int));
493 static void pa_procend
PARAMS ((int));
494 static void pa_space
PARAMS ((int));
495 static void pa_spnum
PARAMS ((int));
496 static void pa_subspace
PARAMS ((int));
497 static void pa_param
PARAMS ((int));
498 static void pa_undefine_label
PARAMS ((void));
499 static int need_89_opcode
PARAMS ((struct pa_it
*,
500 struct pa_89_fp_reg_struct
*));
501 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
502 static label_symbol_struct
*pa_get_label
PARAMS ((void));
503 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, char,
506 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
511 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
512 char *, char, char, char,
513 char, char, char, int,
516 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
517 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
518 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
519 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
521 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
522 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
523 static void pa_ip
PARAMS ((char *));
524 static void fix_new_hppa
PARAMS ((fragS
*, int, short int, symbolS
*,
525 long, expressionS
*, int,
526 bfd_reloc_code_real_type
,
527 enum hppa_reloc_field_selector_type
,
529 static int is_end_of_statement
PARAMS ((void));
530 static int reg_name_search
PARAMS ((char *));
531 static int pa_chk_field_selector
PARAMS ((char **));
532 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
533 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
534 static void process_exit
PARAMS ((void));
535 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
536 static int log2
PARAMS ((int));
537 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
538 static unsigned int pa_stringer_aux
PARAMS ((char *));
539 static void pa_spaces_begin
PARAMS ((void));
540 static void hppa_elf_mark_end_of_function
PARAMS ((void));
542 /* File and gloally scoped variable declarations. */
544 /* Root and final entry in the space chain. */
545 static sd_chain_struct
*space_dict_root
;
546 static sd_chain_struct
*space_dict_last
;
548 /* The current space and subspace. */
549 static sd_chain_struct
*current_space
;
550 static ssd_chain_struct
*current_subspace
;
552 /* Root of the call_info chain. */
553 static struct call_info
*call_info_root
;
555 /* The last call_info (for functions) structure
556 seen so it can be associated with fixups and
558 static struct call_info
*last_call_info
;
560 /* The last call description (for actual calls). */
561 static struct call_desc last_call_desc
;
563 /* Relaxation isn't supported for the PA yet. */
564 const relax_typeS md_relax_table
[] =
567 /* Jumps are always the same size -- one instruction. */
568 int md_short_jump_size
= 4;
569 int md_long_jump_size
= 4;
571 /* handle of the OPCODE hash table */
572 static struct hash_control
*op_hash
= NULL
;
574 /* This array holds the chars that always start a comment. If the
575 pre-processor is disabled, these aren't very useful. */
576 const char comment_chars
[] = ";";
578 /* Table of pseudo ops for the PA. FIXME -- how many of these
579 are now redundant with the overall GAS and the object file
581 const pseudo_typeS md_pseudo_table
[] =
583 /* align pseudo-ops on the PA specify the actual alignment requested,
584 not the log2 of the requested alignment. */
585 {"align", s_align_bytes
, 8},
586 {"ALIGN", s_align_bytes
, 8},
587 {"block", pa_block
, 1},
588 {"BLOCK", pa_block
, 1},
589 {"blockz", pa_block
, 0},
590 {"BLOCKZ", pa_block
, 0},
591 {"byte", pa_cons
, 1},
592 {"BYTE", pa_cons
, 1},
593 {"call", pa_call
, 0},
594 {"CALL", pa_call
, 0},
595 {"callinfo", pa_callinfo
, 0},
596 {"CALLINFO", pa_callinfo
, 0},
597 {"code", pa_code
, 0},
598 {"CODE", pa_code
, 0},
599 {"comm", pa_comm
, 0},
600 {"COMM", pa_comm
, 0},
601 {"copyright", pa_copyright
, 0},
602 {"COPYRIGHT", pa_copyright
, 0},
603 {"data", pa_data
, 0},
604 {"DATA", pa_data
, 0},
605 {"double", pa_float_cons
, 'd'},
606 {"DOUBLE", pa_float_cons
, 'd'},
609 {"enter", pa_enter
, 0},
610 {"ENTER", pa_enter
, 0},
611 {"entry", pa_entry
, 0},
612 {"ENTRY", pa_entry
, 0},
615 {"exit", pa_exit
, 0},
616 {"EXIT", pa_exit
, 0},
617 {"export", pa_export
, 0},
618 {"EXPORT", pa_export
, 0},
619 {"fill", pa_fill
, 0},
620 {"FILL", pa_fill
, 0},
621 {"float", pa_float_cons
, 'f'},
622 {"FLOAT", pa_float_cons
, 'f'},
623 {"half", pa_cons
, 2},
624 {"HALF", pa_cons
, 2},
625 {"import", pa_import
, 0},
626 {"IMPORT", pa_import
, 0},
629 {"label", pa_label
, 0},
630 {"LABEL", pa_label
, 0},
631 {"lcomm", pa_lcomm
, 0},
632 {"LCOMM", pa_lcomm
, 0},
633 {"leave", pa_leave
, 0},
634 {"LEAVE", pa_leave
, 0},
635 {"long", pa_cons
, 4},
636 {"LONG", pa_cons
, 4},
637 {"lsym", pa_lsym
, 0},
638 {"LSYM", pa_lsym
, 0},
639 {"octa", pa_cons
, 16},
640 {"OCTA", pa_cons
, 16},
641 {"org", pa_origin
, 0},
642 {"ORG", pa_origin
, 0},
643 {"origin", pa_origin
, 0},
644 {"ORIGIN", pa_origin
, 0},
645 {"param", pa_param
, 0},
646 {"PARAM", pa_param
, 0},
647 {"proc", pa_proc
, 0},
648 {"PROC", pa_proc
, 0},
649 {"procend", pa_procend
, 0},
650 {"PROCEND", pa_procend
, 0},
651 {"quad", pa_cons
, 8},
652 {"QUAD", pa_cons
, 8},
655 {"short", pa_cons
, 2},
656 {"SHORT", pa_cons
, 2},
657 {"single", pa_float_cons
, 'f'},
658 {"SINGLE", pa_float_cons
, 'f'},
659 {"space", pa_space
, 0},
660 {"SPACE", pa_space
, 0},
661 {"spnum", pa_spnum
, 0},
662 {"SPNUM", pa_spnum
, 0},
663 {"string", pa_stringer
, 0},
664 {"STRING", pa_stringer
, 0},
665 {"stringz", pa_stringer
, 1},
666 {"STRINGZ", pa_stringer
, 1},
667 {"subspa", pa_subspace
, 0},
668 {"SUBSPA", pa_subspace
, 0},
669 {"text", pa_text
, 0},
670 {"TEXT", pa_text
, 0},
671 {"version", pa_version
, 0},
672 {"VERSION", pa_version
, 0},
673 {"word", pa_cons
, 4},
674 {"WORD", pa_cons
, 4},
678 /* This array holds the chars that only start a comment at the beginning of
679 a line. If the line seems to have the form '# 123 filename'
680 .line and .file directives will appear in the pre-processed output.
682 Note that input_file.c hand checks for '#' at the beginning of the
683 first line of the input file. This is because the compiler outputs
684 #NO_APP at the beginning of its output.
686 Also note that '/*' will always start a comment. */
687 const char line_comment_chars
[] = "#";
689 /* This array holds the characters which act as line separators. */
690 const char line_separator_chars
[] = "!";
692 /* Chars that can be used to separate mant from exp in floating point nums. */
693 const char EXP_CHARS
[] = "eE";
695 /* Chars that mean this number is a floating point constant.
696 As in 0f12.456 or 0d1.2345e12.
698 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
699 changed in read.c. Ideally it shouldn't hae to know abou it at
700 all, but nothing is ideal around here. */
701 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
703 static struct pa_it the_insn
;
705 /* Points to the end of an expression just parsed by get_expressoin
706 and friends. FIXME. This shouldn't be handled with a file-global
708 static char *expr_end
;
710 /* Nonzero if a .callinfo appeared within the current procedure. */
711 static int callinfo_found
;
713 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
714 static int within_entry_exit
;
716 /* Nonzero if the assembler is currently within a procedure definition. */
717 static int within_procedure
;
719 /* Handle on strucutre which keep track of the last symbol
720 seen in each subspace. */
721 static label_symbol_struct
*label_symbols_rootp
= NULL
;
723 /* Holds the last field selector. */
724 static int hppa_field_selector
;
726 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
727 static asymbol
*dummy_symbol
;
729 /* Nonzero if errors are to be printed. */
730 static int print_errors
= 1;
732 /* List of registers that are pre-defined:
734 Each general register has one predefined name of the form
735 %r<REGNUM> which has the value <REGNUM>.
737 Space and control registers are handled in a similar manner,
738 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
740 Likewise for the floating point registers, but of the form
741 %fr<REGNUM>. Floating point registers have additional predefined
742 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
743 again have the value <REGNUM>.
745 Many registers also have synonyms:
747 %r26 - %r23 have %arg0 - %arg3 as synonyms
748 %r28 - %r29 have %ret0 - %ret1 as synonyms
749 %r30 has %sp as a synonym
750 %r27 has %dp as a synonym
751 %r2 has %rp as a synonym
753 Almost every control register has a synonym; they are not listed
756 The table is sorted. Suitable for searching by a binary search. */
758 static const struct pd_reg pre_defined_registers
[] =
958 /* This table is sorted by order of the length of the string. This is
959 so we check for <> before we check for <. If we had a <> and checked
960 for < first, we would get a false match. */
961 static const struct fp_cond_map fp_cond_map
[] =
997 static const struct selector_entry selector_table
[] =
1016 /* default space and subspace dictionaries */
1018 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1019 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1021 /* pre-defined subsegments (subspaces) for the HPPA. */
1022 #define SUBSEG_CODE 0
1023 #define SUBSEG_DATA 0
1024 #define SUBSEG_LIT 1
1025 #define SUBSEG_BSS 2
1026 #define SUBSEG_UNWIND 3
1027 #define SUBSEG_GDB_STRINGS 0
1028 #define SUBSEG_GDB_SYMBOLS 1
1030 static struct default_subspace_dict pa_def_subspaces
[] =
1032 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1033 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1034 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1035 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1037 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".hppa_unwind", SUBSEG_UNWIND
},
1039 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1042 static struct default_space_dict pa_def_spaces
[] =
1044 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1045 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1046 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1049 /* Misc local definitions used by the assembler. */
1051 /* Return nonzero if the string pointed to by S potentially represents
1052 a right or left half of a FP register */
1053 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1054 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1056 /* These macros are used to maintain spaces/subspaces. */
1057 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1058 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1059 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1060 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1062 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1063 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1065 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1066 main loop after insertion. */
1068 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1070 ((OPCODE) |= (FIELD) << (START)); \
1074 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1075 IGNORE is used to suppress the error message. */
1077 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1079 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1082 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1088 #define is_DP_relative(exp) \
1089 ((exp).X_op == O_subtract \
1090 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1092 #define is_PC_relative(exp) \
1093 ((exp).X_op == O_subtract \
1094 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1096 #define is_complex(exp) \
1097 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1099 /* Actual functions to implement the PA specific code for the assembler. */
1101 /* Returns a pointer to the label_symbol_struct for the current space.
1102 or NULL if no label_symbol_struct exists for the current space. */
1104 static label_symbol_struct
*
1107 label_symbol_struct
*label_chain
;
1108 sd_chain_struct
*space_chain
= current_space
;
1110 for (label_chain
= label_symbols_rootp
;
1112 label_chain
= label_chain
->lss_next
)
1113 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1119 /* Defines a label for the current space. If one is already defined,
1120 this function will replace it with the new label. */
1123 pa_define_label (symbol
)
1126 label_symbol_struct
*label_chain
= pa_get_label ();
1127 sd_chain_struct
*space_chain
= current_space
;
1130 label_chain
->lss_label
= symbol
;
1133 /* Create a new label entry and add it to the head of the chain. */
1135 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1136 label_chain
->lss_label
= symbol
;
1137 label_chain
->lss_space
= space_chain
;
1138 label_chain
->lss_next
= NULL
;
1140 if (label_symbols_rootp
)
1141 label_chain
->lss_next
= label_symbols_rootp
;
1143 label_symbols_rootp
= label_chain
;
1147 /* Removes a label definition for the current space.
1148 If there is no label_symbol_struct entry, then no action is taken. */
1151 pa_undefine_label ()
1153 label_symbol_struct
*label_chain
;
1154 label_symbol_struct
*prev_label_chain
= NULL
;
1155 sd_chain_struct
*space_chain
= current_space
;
1157 for (label_chain
= label_symbols_rootp
;
1159 label_chain
= label_chain
->lss_next
)
1161 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1163 /* Remove the label from the chain and free its memory. */
1164 if (prev_label_chain
)
1165 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1167 label_symbols_rootp
= label_chain
->lss_next
;
1172 prev_label_chain
= label_chain
;
1177 /* An HPPA-specific version of fix_new. This is required because the HPPA
1178 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1179 results in the creation of an instance of an hppa_fix_struct. An
1180 hppa_fix_struct stores the extra information along with a pointer to the
1181 original fixS. This is attached to the original fixup via the
1182 tc_fix_data field. */
1185 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1186 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1190 symbolS
*add_symbol
;
1194 bfd_reloc_code_real_type r_type
;
1195 enum hppa_reloc_field_selector_type r_field
;
1202 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1203 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1206 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1208 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1209 new_fix
->tc_fix_data
= hppa_fix
;
1210 hppa_fix
->fx_r_type
= r_type
;
1211 hppa_fix
->fx_r_field
= r_field
;
1212 hppa_fix
->fx_r_format
= r_format
;
1213 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1216 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1218 /* If necessary call BFD backend function to attach the
1219 unwind bits to the target dependent parts of a BFD symbol.
1221 #ifdef obj_attach_unwind_info
1222 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1226 /* foo-$global$ is used to access non-automatic storage. $global$
1227 is really just a marker and has served its purpose, so eliminate
1228 it now so as not to confuse write.c. */
1229 if (new_fix
->fx_subsy
1230 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1231 new_fix
->fx_subsy
= NULL
;
1234 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1235 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1238 parse_cons_expression_hppa (exp
)
1241 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1245 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1246 hppa_field_selector is set by the parse_cons_expression_hppa. */
1249 cons_fix_new_hppa (frag
, where
, size
, exp
)
1255 unsigned int rel_type
;
1257 if (is_DP_relative (*exp
))
1258 rel_type
= R_HPPA_GOTOFF
;
1259 else if (is_complex (*exp
))
1260 rel_type
= R_HPPA_COMPLEX
;
1264 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1265 as_warn ("Invalid field selector. Assuming F%%.");
1267 fix_new_hppa (frag
, where
, size
,
1268 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1269 hppa_field_selector
, 32, 0, (char *) 0);
1271 /* Reset field selector to its default state. */
1272 hppa_field_selector
= 0;
1275 /* This function is called once, at assembler startup time. It should
1276 set up all the tables, etc. that the MD part of the assembler will need. */
1281 const char *retval
= NULL
;
1285 last_call_info
= NULL
;
1286 call_info_root
= NULL
;
1288 /* Folding of text and data segments fails miserably on the PA.
1289 Warn user and disable "-R" option. */
1292 as_warn ("-R option not supported on this target.");
1293 flag_readonly_data_in_text
= 0;
1299 op_hash
= hash_new ();
1301 while (i
< NUMOPCODES
)
1303 const char *name
= pa_opcodes
[i
].name
;
1304 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1305 if (retval
!= NULL
&& *retval
!= '\0')
1307 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1312 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1313 != pa_opcodes
[i
].match
)
1315 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1316 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1321 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1325 as_fatal ("Broken assembler. No assembly attempted.");
1327 /* SOM will change text_section. To make sure we never put
1328 anything into the old one switch to the new one now. */
1329 subseg_set (text_section
, 0);
1331 dummy_symbol
= symbol_find_or_make ("L$dummy");
1332 dummy_symbol
->section
= text_section
;
1335 /* Assemble a single instruction storing it into a frag. */
1342 /* The had better be something to assemble. */
1345 /* If we are within a procedure definition, make sure we've
1346 defined a label for the procedure; handle case where the
1347 label was defined after the .PROC directive. */
1348 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1350 label_symbol_struct
*label_symbol
= pa_get_label ();
1354 if (label_symbol
->lss_label
)
1356 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1357 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1360 as_bad ("Missing function name for .PROC (corrupted label chain)");
1363 as_bad ("Missing function name for .PROC");
1366 /* Assemble the instruction. Results are saved into "the_insn". */
1369 /* Get somewhere to put the assembled instrution. */
1372 /* Output the opcode. */
1373 md_number_to_chars (to
, the_insn
.opcode
, 4);
1375 /* If necessary output more stuff. */
1376 if (the_insn
.reloc
!= R_HPPA_NONE
)
1377 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1378 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1379 the_insn
.reloc
, the_insn
.field_selector
,
1380 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1383 /* Do the real work for assembling a single instruction. Store results
1384 into the global "the_insn" variable. */
1390 char *error_message
= "";
1391 char *s
, c
, *argstart
, *name
, *save_s
;
1395 int cmpltr
, nullif
, flag
, cond
, num
;
1396 unsigned long opcode
;
1397 struct pa_opcode
*insn
;
1399 /* Skip to something interesting. */
1400 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1419 as_bad ("Unknown opcode: `%s'", str
);
1425 /* Convert everything into lower case. */
1428 if (isupper (*save_s
))
1429 *save_s
= tolower (*save_s
);
1433 /* Look up the opcode in the has table. */
1434 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1436 as_bad ("Unknown opcode: `%s'", str
);
1445 /* Mark the location where arguments for the instruction start, then
1446 start processing them. */
1450 /* Do some initialization. */
1451 opcode
= insn
->match
;
1452 bzero (&the_insn
, sizeof (the_insn
));
1454 the_insn
.reloc
= R_HPPA_NONE
;
1456 /* Build the opcode, checking as we go to make
1457 sure that the operands match. */
1458 for (args
= insn
->args
;; ++args
)
1463 /* End of arguments. */
1479 /* These must match exactly. */
1488 /* Handle a 5 bit register or control register field at 10. */
1491 num
= pa_parse_number (&s
, 0);
1492 CHECK_FIELD (num
, 31, 0, 0);
1493 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1495 /* Handle a 5 bit register field at 15. */
1497 num
= pa_parse_number (&s
, 0);
1498 CHECK_FIELD (num
, 31, 0, 0);
1499 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1501 /* Handle a 5 bit register field at 31. */
1504 num
= pa_parse_number (&s
, 0);
1505 CHECK_FIELD (num
, 31, 0, 0);
1506 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1508 /* Handle a 5 bit field length at 31. */
1510 num
= pa_get_absolute_expression (&the_insn
, &s
);
1512 CHECK_FIELD (num
, 32, 1, 0);
1513 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1515 /* Handle a 5 bit immediate at 15. */
1517 num
= pa_get_absolute_expression (&the_insn
, &s
);
1519 CHECK_FIELD (num
, 15, -16, 0);
1520 low_sign_unext (num
, 5, &num
);
1521 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1523 /* Handle a 5 bit immediate at 31. */
1525 num
= pa_get_absolute_expression (&the_insn
, &s
);
1527 CHECK_FIELD (num
, 15, -16, 0)
1528 low_sign_unext (num
, 5, &num
);
1529 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1531 /* Handle an unsigned 5 bit immediate at 31. */
1533 num
= pa_get_absolute_expression (&the_insn
, &s
);
1535 CHECK_FIELD (num
, 31, 0, 0);
1536 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1538 /* Handle an unsigned 5 bit immediate at 15. */
1540 num
= pa_get_absolute_expression (&the_insn
, &s
);
1542 CHECK_FIELD (num
, 31, 0, 0);
1543 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1545 /* Handle a 2 bit space identifier at 17. */
1547 num
= pa_parse_number (&s
, 0);
1548 CHECK_FIELD (num
, 3, 0, 1);
1549 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1551 /* Handle a 3 bit space identifier at 18. */
1553 num
= pa_parse_number (&s
, 0);
1554 CHECK_FIELD (num
, 7, 0, 1);
1555 dis_assemble_3 (num
, &num
);
1556 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1558 /* Handle a completer for an indexing load or store. */
1564 while (*s
== ',' && i
< 2)
1567 if (strncasecmp (s
, "sm", 2) == 0)
1574 else if (strncasecmp (s
, "m", 1) == 0)
1576 else if (strncasecmp (s
, "s", 1) == 0)
1579 as_bad ("Invalid Indexed Load Completer.");
1584 as_bad ("Invalid Indexed Load Completer Syntax.");
1586 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1589 /* Handle a short load/store completer. */
1597 if (strncasecmp (s
, "ma", 2) == 0)
1602 else if (strncasecmp (s
, "mb", 2) == 0)
1608 as_bad ("Invalid Short Load/Store Completer.");
1612 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1615 /* Handle a stbys completer. */
1621 while (*s
== ',' && i
< 2)
1624 if (strncasecmp (s
, "m", 1) == 0)
1626 else if (strncasecmp (s
, "b", 1) == 0)
1628 else if (strncasecmp (s
, "e", 1) == 0)
1631 as_bad ("Invalid Store Bytes Short Completer");
1636 as_bad ("Invalid Store Bytes Short Completer");
1638 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1641 /* Handle a non-negated compare/stubtract condition. */
1643 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1646 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1649 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1651 /* Handle a negated or non-negated compare/subtract condition. */
1654 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1658 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1661 as_bad ("Invalid Compare/Subtract Condition.");
1666 /* Negated condition requires an opcode change. */
1670 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1672 /* Handle a negated or non-negated add condition. */
1675 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1679 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1682 as_bad ("Invalid Compare/Subtract Condition");
1687 /* Negated condition requires an opcode change. */
1691 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1693 /* Handle a compare/subtract condition. */
1700 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1705 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1708 as_bad ("Invalid Compare/Subtract Condition");
1712 opcode
|= cmpltr
<< 13;
1713 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1715 /* Handle a non-negated add condition. */
1724 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1728 if (strcmp (name
, "=") == 0)
1730 else if (strcmp (name
, "<") == 0)
1732 else if (strcmp (name
, "<=") == 0)
1734 else if (strcasecmp (name
, "nuv") == 0)
1736 else if (strcasecmp (name
, "znv") == 0)
1738 else if (strcasecmp (name
, "sv") == 0)
1740 else if (strcasecmp (name
, "od") == 0)
1742 else if (strcasecmp (name
, "n") == 0)
1744 else if (strcasecmp (name
, "tr") == 0)
1749 else if (strcmp (name
, "<>") == 0)
1754 else if (strcmp (name
, ">=") == 0)
1759 else if (strcmp (name
, ">") == 0)
1764 else if (strcasecmp (name
, "uv") == 0)
1769 else if (strcasecmp (name
, "vnz") == 0)
1774 else if (strcasecmp (name
, "nsv") == 0)
1779 else if (strcasecmp (name
, "ev") == 0)
1785 as_bad ("Invalid Add Condition: %s", name
);
1788 nullif
= pa_parse_nullif (&s
);
1789 opcode
|= nullif
<< 1;
1790 opcode
|= cmpltr
<< 13;
1791 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1793 /* HANDLE a logical instruction condition. */
1801 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1805 if (strcmp (name
, "=") == 0)
1807 else if (strcmp (name
, "<") == 0)
1809 else if (strcmp (name
, "<=") == 0)
1811 else if (strcasecmp (name
, "od") == 0)
1813 else if (strcasecmp (name
, "tr") == 0)
1818 else if (strcmp (name
, "<>") == 0)
1823 else if (strcmp (name
, ">=") == 0)
1828 else if (strcmp (name
, ">") == 0)
1833 else if (strcasecmp (name
, "ev") == 0)
1839 as_bad ("Invalid Logical Instruction Condition.");
1842 opcode
|= cmpltr
<< 13;
1843 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1845 /* Handle a unit instruction condition. */
1852 if (strncasecmp (s
, "sbz", 3) == 0)
1857 else if (strncasecmp (s
, "shz", 3) == 0)
1862 else if (strncasecmp (s
, "sdc", 3) == 0)
1867 else if (strncasecmp (s
, "sbc", 3) == 0)
1872 else if (strncasecmp (s
, "shc", 3) == 0)
1877 else if (strncasecmp (s
, "tr", 2) == 0)
1883 else if (strncasecmp (s
, "nbz", 3) == 0)
1889 else if (strncasecmp (s
, "nhz", 3) == 0)
1895 else if (strncasecmp (s
, "ndc", 3) == 0)
1901 else if (strncasecmp (s
, "nbc", 3) == 0)
1907 else if (strncasecmp (s
, "nhc", 3) == 0)
1914 as_bad ("Invalid Logical Instruction Condition.");
1916 opcode
|= cmpltr
<< 13;
1917 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1919 /* Handle a shift/extract/deposit condition. */
1927 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1931 if (strcmp (name
, "=") == 0)
1933 else if (strcmp (name
, "<") == 0)
1935 else if (strcasecmp (name
, "od") == 0)
1937 else if (strcasecmp (name
, "tr") == 0)
1939 else if (strcmp (name
, "<>") == 0)
1941 else if (strcmp (name
, ">=") == 0)
1943 else if (strcasecmp (name
, "ev") == 0)
1945 /* Handle movb,n. Put things back the way they were.
1946 This includes moving s back to where it started. */
1947 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1954 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1957 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1959 /* Handle bvb and bb conditions. */
1965 if (strncmp (s
, "<", 1) == 0)
1970 else if (strncmp (s
, ">=", 2) == 0)
1976 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1978 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1980 /* Handle a system control completer. */
1982 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
1990 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
1992 /* Handle a nullification completer for branch instructions. */
1994 nullif
= pa_parse_nullif (&s
);
1995 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
1997 /* Handle a 11 bit immediate at 31. */
1999 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2002 if (the_insn
.exp
.X_op
== O_constant
)
2004 num
= evaluate_absolute (&the_insn
);
2005 CHECK_FIELD (num
, 1023, -1024, 0);
2006 low_sign_unext (num
, 11, &num
);
2007 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2011 if (is_DP_relative (the_insn
.exp
))
2012 the_insn
.reloc
= R_HPPA_GOTOFF
;
2013 else if (is_PC_relative (the_insn
.exp
))
2014 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2015 else if (is_complex (the_insn
.exp
))
2016 the_insn
.reloc
= R_HPPA_COMPLEX
;
2018 the_insn
.reloc
= R_HPPA
;
2019 the_insn
.format
= 11;
2023 /* Handle a 14 bit immediate at 31. */
2025 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2028 if (the_insn
.exp
.X_op
== O_constant
)
2030 num
= evaluate_absolute (&the_insn
);
2031 CHECK_FIELD (num
, 8191, -8192, 0);
2032 low_sign_unext (num
, 14, &num
);
2033 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2037 if (is_DP_relative (the_insn
.exp
))
2038 the_insn
.reloc
= R_HPPA_GOTOFF
;
2039 else if (is_PC_relative (the_insn
.exp
))
2040 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2041 else if (is_complex (the_insn
.exp
))
2042 the_insn
.reloc
= R_HPPA_COMPLEX
;
2044 the_insn
.reloc
= R_HPPA
;
2045 the_insn
.format
= 14;
2049 /* Handle a 21 bit immediate at 31. */
2051 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2054 if (the_insn
.exp
.X_op
== O_constant
)
2056 num
= evaluate_absolute (&the_insn
);
2057 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2058 dis_assemble_21 (num
, &num
);
2059 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2063 if (is_DP_relative (the_insn
.exp
))
2064 the_insn
.reloc
= R_HPPA_GOTOFF
;
2065 else if (is_PC_relative (the_insn
.exp
))
2066 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2067 else if (is_complex (the_insn
.exp
))
2068 the_insn
.reloc
= R_HPPA_COMPLEX
;
2070 the_insn
.reloc
= R_HPPA
;
2071 the_insn
.format
= 21;
2075 /* Handle a 12 bit branch displacement. */
2077 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2081 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2083 unsigned int w1
, w
, result
;
2085 num
= evaluate_absolute (&the_insn
);
2088 as_bad ("Branch to unaligned address");
2091 CHECK_FIELD (num
, 8191, -8192, 0);
2092 sign_unext ((num
- 8) >> 2, 12, &result
);
2093 dis_assemble_12 (result
, &w1
, &w
);
2094 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2098 if (is_complex (the_insn
.exp
))
2099 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2101 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2102 the_insn
.format
= 12;
2103 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2104 bzero (&last_call_desc
, sizeof (struct call_desc
));
2109 /* Handle a 17 bit branch displacement. */
2111 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2115 if (!the_insn
.exp
.X_add_symbol
2116 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2119 unsigned int w2
, w1
, w
, result
;
2121 num
= evaluate_absolute (&the_insn
);
2124 as_bad ("Branch to unaligned address");
2127 CHECK_FIELD (num
, 262143, -262144, 0);
2129 if (the_insn
.exp
.X_add_symbol
)
2132 sign_unext (num
>> 2, 17, &result
);
2133 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2134 INSERT_FIELD_AND_CONTINUE (opcode
,
2135 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2139 if (is_complex (the_insn
.exp
))
2140 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2142 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2143 the_insn
.format
= 17;
2144 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2145 bzero (&last_call_desc
, sizeof (struct call_desc
));
2149 /* Handle an absolute 17 bit branch target. */
2151 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2155 if (!the_insn
.exp
.X_add_symbol
2156 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2159 unsigned int w2
, w1
, w
, result
;
2161 num
= evaluate_absolute (&the_insn
);
2164 as_bad ("Branch to unaligned address");
2167 CHECK_FIELD (num
, 262143, -262144, 0);
2169 if (the_insn
.exp
.X_add_symbol
)
2172 sign_unext (num
>> 2, 17, &result
);
2173 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2174 INSERT_FIELD_AND_CONTINUE (opcode
,
2175 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2179 if (is_complex (the_insn
.exp
))
2180 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2182 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2183 the_insn
.format
= 17;
2187 /* Handle a 5 bit shift count at 26. */
2189 num
= pa_get_absolute_expression (&the_insn
, &s
);
2191 CHECK_FIELD (num
, 31, 0, 0);
2192 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2194 /* Handle a 5 bit bit position at 26. */
2196 num
= pa_get_absolute_expression (&the_insn
, &s
);
2198 CHECK_FIELD (num
, 31, 0, 0);
2199 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2201 /* Handle a 5 bit immediate at 10. */
2203 num
= pa_get_absolute_expression (&the_insn
, &s
);
2205 CHECK_FIELD (num
, 31, 0, 0);
2206 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2208 /* Handle a 13 bit immediate at 18. */
2210 num
= pa_get_absolute_expression (&the_insn
, &s
);
2212 CHECK_FIELD (num
, 4095, -4096, 0);
2213 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2215 /* Handle a 26 bit immediate at 31. */
2217 num
= pa_get_absolute_expression (&the_insn
, &s
);
2219 CHECK_FIELD (num
, 671108864, 0, 0);
2220 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2222 /* Handle a 3 bit SFU identifier at 25. */
2224 num
= pa_get_absolute_expression (&the_insn
, &s
);
2226 CHECK_FIELD (num
, 7, 0, 0);
2227 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2229 /* We don't support any of these. FIXME. */
2236 /* Handle a source FP operand format completer. */
2238 flag
= pa_parse_fp_format (&s
);
2239 the_insn
.fpof1
= flag
;
2240 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2242 /* Handle a destination FP operand format completer. */
2244 /* pa_parse_format needs the ',' prefix. */
2246 flag
= pa_parse_fp_format (&s
);
2247 the_insn
.fpof2
= flag
;
2248 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2250 /* Handle FP compare conditions. */
2252 cond
= pa_parse_fp_cmp_cond (&s
);
2253 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2255 /* Handle L/R register halves like 't'. */
2258 struct pa_89_fp_reg_struct result
;
2260 pa_parse_number (&s
, &result
);
2261 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2262 opcode
|= result
.number_part
;
2264 /* 0x30 opcodes are FP arithmetic operation opcodes
2265 and need to be turned into 0x38 opcodes. This
2266 is not necessary for loads/stores. */
2267 if (need_89_opcode (&the_insn
, &result
)
2268 && ((opcode
& 0xfc000000) == 0x30000000))
2271 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2274 /* Handle L/R register halves like 'b'. */
2277 struct pa_89_fp_reg_struct result
;
2279 pa_parse_number (&s
, &result
);
2280 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2281 opcode
|= result
.number_part
<< 21;
2282 if (need_89_opcode (&the_insn
, &result
))
2284 opcode
|= (result
.l_r_select
& 1) << 7;
2290 /* Handle L/R register halves like 'x'. */
2293 struct pa_89_fp_reg_struct result
;
2295 pa_parse_number (&s
, &result
);
2296 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2297 opcode
|= (result
.number_part
& 0x1f) << 16;
2298 if (need_89_opcode (&the_insn
, &result
))
2300 opcode
|= (result
.l_r_select
& 1) << 12;
2306 /* Handle a 5 bit register field at 10. */
2309 struct pa_89_fp_reg_struct result
;
2311 pa_parse_number (&s
, &result
);
2312 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2313 if (the_insn
.fpof1
== SGL
)
2315 result
.number_part
&= 0xF;
2316 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2318 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2321 /* Handle a 5 bit register field at 15. */
2324 struct pa_89_fp_reg_struct result
;
2326 pa_parse_number (&s
, &result
);
2327 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2328 if (the_insn
.fpof1
== SGL
)
2330 result
.number_part
&= 0xF;
2331 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2333 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2336 /* Handle a 5 bit register field at 31. */
2339 struct pa_89_fp_reg_struct result
;
2341 pa_parse_number (&s
, &result
);
2342 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2343 if (the_insn
.fpof1
== SGL
)
2345 result
.number_part
&= 0xF;
2346 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2348 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2351 /* Handle a 5 bit register field at 20. */
2354 struct pa_89_fp_reg_struct result
;
2356 pa_parse_number (&s
, &result
);
2357 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2358 if (the_insn
.fpof1
== SGL
)
2360 result
.number_part
&= 0xF;
2361 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2363 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2366 /* Handle a 5 bit register field at 25. */
2369 struct pa_89_fp_reg_struct result
;
2371 pa_parse_number (&s
, &result
);
2372 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2373 if (the_insn
.fpof1
== SGL
)
2375 result
.number_part
&= 0xF;
2376 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2378 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2381 /* Handle a floating point operand format at 26.
2382 Only allows single and double precision. */
2384 flag
= pa_parse_fp_format (&s
);
2390 the_insn
.fpof1
= flag
;
2396 as_bad ("Invalid Floating Point Operand Format.");
2406 /* Check if the args matched. */
2409 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2410 && !strcmp (insn
->name
, insn
[1].name
))
2418 as_bad ("Invalid operands %s", error_message
);
2425 the_insn
.opcode
= opcode
;
2428 /* Turn a string in input_line_pointer into a floating point constant of type
2429 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2430 emitted is stored in *sizeP . An error message or NULL is returned. */
2432 #define MAX_LITTLENUMS 6
2435 md_atof (type
, litP
, sizeP
)
2441 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2442 LITTLENUM_TYPE
*wordP
;
2474 return "Bad call to MD_ATOF()";
2476 t
= atof_ieee (input_line_pointer
, type
, words
);
2478 input_line_pointer
= t
;
2479 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2480 for (wordP
= words
; prec
--;)
2482 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2483 litP
+= sizeof (LITTLENUM_TYPE
);
2488 /* Write out big-endian. */
2491 md_number_to_chars (buf
, val
, n
)
2496 number_to_chars_bigendian (buf
, val
, n
);
2499 /* Translate internal representation of relocation info to BFD target
2503 tc_gen_reloc (section
, fixp
)
2508 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2509 bfd_reloc_code_real_type code
;
2510 static int unwind_reloc_fixp_cnt
= 0;
2511 static arelent
*unwind_reloc_entryP
= NULL
;
2512 static arelent
*no_relocs
= NULL
;
2514 bfd_reloc_code_real_type
**codes
;
2518 if (fixp
->fx_addsy
== 0)
2520 assert (hppa_fixp
!= 0);
2521 assert (section
!= 0);
2524 /* Yuk. I would really like to push all this ELF specific unwind
2525 crud into BFD and the linker. That's how SOM does it -- and
2526 if we could make ELF emulate that then we could share more code
2527 in GAS (and potentially a gnu-linker later).
2529 Unwind section relocations are handled in a special way.
2530 The relocations for the .unwind section are originally
2531 built in the usual way. That is, for each unwind table
2532 entry there are two relocations: one for the beginning of
2533 the function and one for the end.
2535 The first time we enter this function we create a
2536 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2537 of the relocation is initialized to 0. Each additional
2538 pair of times this function is called for the unwind
2539 section represents an additional unwind table entry. Thus,
2540 the addend of the relocation should end up to be the number
2541 of unwind table entries. */
2542 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2544 if (unwind_reloc_entryP
== NULL
)
2546 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2548 assert (reloc
!= 0);
2549 unwind_reloc_entryP
= reloc
;
2550 unwind_reloc_fixp_cnt
++;
2551 unwind_reloc_entryP
->address
2552 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2553 /* A pointer to any function will do. We only
2554 need one to tell us what section the unwind
2555 relocations are for. */
2556 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2557 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2558 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2559 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2560 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2561 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2562 sizeof (arelent
*) * 2);
2563 assert (relocs
!= 0);
2564 relocs
[0] = unwind_reloc_entryP
;
2568 unwind_reloc_fixp_cnt
++;
2569 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2575 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2576 assert (reloc
!= 0);
2578 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2579 codes
= hppa_gen_reloc_type (stdoutput
,
2581 hppa_fixp
->fx_r_format
,
2582 hppa_fixp
->fx_r_field
);
2584 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2587 relocs
= (arelent
**)
2588 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2589 assert (relocs
!= 0);
2591 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2592 sizeof (arelent
) * n_relocs
);
2594 assert (reloc
!= 0);
2596 for (i
= 0; i
< n_relocs
; i
++)
2597 relocs
[i
] = &reloc
[i
];
2599 relocs
[n_relocs
] = NULL
;
2602 switch (fixp
->fx_r_type
)
2604 case R_HPPA_COMPLEX
:
2605 case R_HPPA_COMPLEX_PCREL_CALL
:
2606 case R_HPPA_COMPLEX_ABS_CALL
:
2607 assert (n_relocs
== 5);
2609 for (i
= 0; i
< n_relocs
; i
++)
2611 reloc
[i
].sym_ptr_ptr
= NULL
;
2612 reloc
[i
].address
= 0;
2613 reloc
[i
].addend
= 0;
2614 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2615 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2618 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2619 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2620 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2622 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2623 reloc
[3].addend
= fixp
->fx_addnumber
;
2624 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2625 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2626 reloc
[1].addend
= fixp
->fx_addnumber
;
2631 assert (n_relocs
== 1);
2635 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2636 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2637 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2638 reloc
->addend
= 0; /* default */
2640 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2642 /* Now, do any processing that is dependent on the relocation type. */
2645 case R_HPPA_PLABEL_32
:
2646 case R_HPPA_PLABEL_11
:
2647 case R_HPPA_PLABEL_14
:
2648 case R_HPPA_PLABEL_L21
:
2649 case R_HPPA_PLABEL_R11
:
2650 case R_HPPA_PLABEL_R14
:
2651 /* For plabel relocations, the addend of the
2652 relocation should be either 0 (no static link) or 2
2653 (static link required).
2655 FIXME: We always assume no static link! */
2659 case R_HPPA_ABS_CALL_11
:
2660 case R_HPPA_ABS_CALL_14
:
2661 case R_HPPA_ABS_CALL_17
:
2662 case R_HPPA_ABS_CALL_L21
:
2663 case R_HPPA_ABS_CALL_R11
:
2664 case R_HPPA_ABS_CALL_R14
:
2665 case R_HPPA_ABS_CALL_R17
:
2666 case R_HPPA_ABS_CALL_LS21
:
2667 case R_HPPA_ABS_CALL_RS11
:
2668 case R_HPPA_ABS_CALL_RS14
:
2669 case R_HPPA_ABS_CALL_RS17
:
2670 case R_HPPA_ABS_CALL_LD21
:
2671 case R_HPPA_ABS_CALL_RD11
:
2672 case R_HPPA_ABS_CALL_RD14
:
2673 case R_HPPA_ABS_CALL_RD17
:
2674 case R_HPPA_ABS_CALL_LR21
:
2675 case R_HPPA_ABS_CALL_RR14
:
2676 case R_HPPA_ABS_CALL_RR17
:
2678 case R_HPPA_PCREL_CALL_11
:
2679 case R_HPPA_PCREL_CALL_14
:
2680 case R_HPPA_PCREL_CALL_17
:
2681 case R_HPPA_PCREL_CALL_L21
:
2682 case R_HPPA_PCREL_CALL_R11
:
2683 case R_HPPA_PCREL_CALL_R14
:
2684 case R_HPPA_PCREL_CALL_R17
:
2685 case R_HPPA_PCREL_CALL_LS21
:
2686 case R_HPPA_PCREL_CALL_RS11
:
2687 case R_HPPA_PCREL_CALL_RS14
:
2688 case R_HPPA_PCREL_CALL_RS17
:
2689 case R_HPPA_PCREL_CALL_LD21
:
2690 case R_HPPA_PCREL_CALL_RD11
:
2691 case R_HPPA_PCREL_CALL_RD14
:
2692 case R_HPPA_PCREL_CALL_RD17
:
2693 case R_HPPA_PCREL_CALL_LR21
:
2694 case R_HPPA_PCREL_CALL_RR14
:
2695 case R_HPPA_PCREL_CALL_RR17
:
2696 /* The constant is stored in the instruction. */
2697 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2700 reloc
->addend
= fixp
->fx_addnumber
;
2707 /* Walk over reach relocation returned by the BFD backend. */
2708 for (i
= 0; i
< n_relocs
; i
++)
2712 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2713 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2714 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2720 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2725 /* For plabel relocations, the addend of the
2726 relocation should be either 0 (no static link) or 2
2727 (static link required).
2729 FIXME: We always assume no static link! */
2730 relocs
[i
]->addend
= 0;
2741 /* There is no symbol or addend associated with these fixups. */
2742 relocs
[i
]->sym_ptr_ptr
= dummy_symbol
;
2743 relocs
[i
]->addend
= 0;
2747 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2756 /* Process any machine dependent frag types. */
2759 md_convert_frag (abfd
, sec
, fragP
)
2761 register asection
*sec
;
2762 register fragS
*fragP
;
2764 unsigned int address
;
2766 if (fragP
->fr_type
== rs_machine_dependent
)
2768 switch ((int) fragP
->fr_subtype
)
2771 fragP
->fr_type
= rs_fill
;
2772 know (fragP
->fr_var
== 1);
2773 know (fragP
->fr_next
);
2774 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2775 if (address
% fragP
->fr_offset
)
2778 fragP
->fr_next
->fr_address
2783 fragP
->fr_offset
= 0;
2789 /* Round up a section size to the appropriate boundary. */
2792 md_section_align (segment
, size
)
2796 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2797 int align2
= (1 << align
) - 1;
2799 return (size
+ align2
) & ~align2
;
2802 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2804 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2806 addressT from_addr
, to_addr
;
2810 fprintf (stderr
, "pa_create_short_jmp\n");
2814 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2816 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2818 addressT from_addr
, to_addr
;
2822 fprintf (stderr
, "pa_create_long_jump\n");
2826 /* Return the approximate size of a frag before relaxation has occurred. */
2828 md_estimate_size_before_relax (fragP
, segment
)
2829 register fragS
*fragP
;
2836 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2842 /* Parse machine dependent options. There are none on the PA. */
2844 md_parse_option (argP
, cntP
, vecP
)
2852 /* We have no need to default values of symbols. */
2855 md_undefined_symbol (name
)
2861 /* Parse an operand that is machine-specific.
2862 We just return without modifying the expression as we have nothing
2866 md_operand (expressionP
)
2867 expressionS
*expressionP
;
2871 /* Apply a fixup to an instruction. */
2874 md_apply_fix (fixP
, valp
)
2878 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2879 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
2880 long new_val
, result
;
2881 unsigned int w1
, w2
, w
;
2884 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2885 never be "applied" (they are just markers). */
2887 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2888 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2892 /* There should have been an HPPA specific fixup associated
2893 with the GAS fixup. */
2896 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2897 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2899 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2902 /* Remember this value for emit_reloc. FIXME, is this braindamage
2903 documented anywhere!?! */
2904 fixP
->fx_addnumber
= val
;
2906 /* Check if this is an undefined symbol. No relocation can
2907 possibly be performed in this case. */
2908 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2910 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
))
2913 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
2914 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
2915 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
2916 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
2917 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
2918 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
2919 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
)
2920 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
2926 /* Handle all opcodes with the 'j' operand type. */
2928 CHECK_FIELD (new_val
, 8191, -8192, 0);
2930 /* Mask off 14 bits to be changed. */
2931 bfd_put_32 (stdoutput
,
2932 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2934 low_sign_unext (new_val
, 14, &result
);
2937 /* Handle all opcodes with the 'k' operand type. */
2939 CHECK_FIELD (new_val
, 2097152, 0, 0);
2941 /* Mask off 21 bits to be changed. */
2942 bfd_put_32 (stdoutput
,
2943 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2945 dis_assemble_21 (new_val
, &result
);
2948 /* Handle all the opcodes with the 'i' operand type. */
2950 CHECK_FIELD (new_val
, 1023, -1023, 0);
2952 /* Mask off 11 bits to be changed. */
2953 bfd_put_32 (stdoutput
,
2954 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2956 low_sign_unext (new_val
, 11, &result
);
2959 /* Handle all the opcodes with the 'w' operand type. */
2961 CHECK_FIELD (new_val
, 8191, -8192, 0)
2963 /* Mask off 11 bits to be changed. */
2964 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2965 bfd_put_32 (stdoutput
,
2966 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2969 dis_assemble_12 (result
, &w1
, &w
);
2970 result
= ((w1
<< 2) | w
);
2973 /* Handle some of the opcodes with the 'W' operand type. */
2976 #define stub_needed(CALLER, CALLEE) \
2977 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2978 /* It is necessary to force PC-relative calls/jumps to have a
2979 relocation entry if they're going to need either a argument
2980 relocation or long call stub. FIXME. Can't we need the same
2981 for absolute calls? */
2983 && (stub_needed (((obj_symbol_type
*)
2984 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2985 hppa_fixP
->fx_arg_reloc
)))
2989 CHECK_FIELD (new_val
, 262143, -262144, 0);
2991 /* Mask off 17 bits to be changed. */
2992 bfd_put_32 (stdoutput
,
2993 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
2995 sign_unext ((new_val
- 8) >> 2, 17, &result
);
2996 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2997 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3002 /* These are ELF specific relocations. ELF unfortunately
3003 handles unwinds in a completely different manner. */
3004 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3005 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3006 result
= fixP
->fx_addnumber
;
3011 fixP
->fx_addnumber
= fixP
->fx_offset
;
3012 /* If we have a real relocation, then we want zero to
3013 be stored in the object file. If no relocation is going
3014 to be emitted, then we need to store new_val into the
3017 bfd_put_32 (stdoutput
, 0, buf
);
3019 bfd_put_32 (stdoutput
, new_val
, buf
);
3028 as_bad ("Unknown relocation encountered in md_apply_fix.");
3032 /* Insert the relocation. */
3033 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3038 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3039 (unsigned int) fixP
, fixP
->fx_r_type
);
3044 /* Exactly what point is a PC-relative offset relative TO?
3045 On the PA, they're relative to the address of the offset. */
3048 md_pcrel_from (fixP
)
3051 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3054 /* Return nonzero if the input line pointer is at the end of
3058 is_end_of_statement ()
3060 return ((*input_line_pointer
== '\n')
3061 || (*input_line_pointer
== ';')
3062 || (*input_line_pointer
== '!'));
3065 /* Read a number from S. The number might come in one of many forms,
3066 the most common will be a hex or decimal constant, but it could be
3067 a pre-defined register (Yuk!), or an absolute symbol.
3069 Return a number or -1 for failure.
3071 When parsing PA-89 FP register numbers RESULT will be
3072 the address of a structure to return information about
3073 L/R half of FP registers, store results there as appropriate.
3075 pa_parse_number can not handle negative constants and will fail
3076 horribly if it is passed such a constant. */
3079 pa_parse_number (s
, result
)
3081 struct pa_89_fp_reg_struct
*result
;
3090 /* Skip whitespace before the number. */
3091 while (*p
== ' ' || *p
== '\t')
3094 /* Store info in RESULT if requested by caller. */
3097 result
->number_part
= -1;
3098 result
->l_r_select
= -1;
3104 /* Looks like a number. */
3107 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3109 /* The number is specified in hex. */
3111 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3112 || ((*p
>= 'A') && (*p
<= 'F')))
3115 num
= num
* 16 + *p
- '0';
3116 else if (*p
>= 'a' && *p
<= 'f')
3117 num
= num
* 16 + *p
- 'a' + 10;
3119 num
= num
* 16 + *p
- 'A' + 10;
3125 /* The number is specified in decimal. */
3126 while (isdigit (*p
))
3128 num
= num
* 10 + *p
- '0';
3133 /* Store info in RESULT if requested by the caller. */
3136 result
->number_part
= num
;
3138 if (IS_R_SELECT (p
))
3140 result
->l_r_select
= 1;
3143 else if (IS_L_SELECT (p
))
3145 result
->l_r_select
= 0;
3149 result
->l_r_select
= 0;
3154 /* The number might be a predefined register. */
3159 /* Tege hack: Special case for general registers as the general
3160 code makes a binary search with case translation, and is VERY
3165 if (*p
== 'e' && *(p
+ 1) == 't'
3166 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3169 num
= *p
- '0' + 28;
3177 else if (!isdigit (*p
))
3180 as_bad ("Undefined register: '%s'.", name
);
3186 num
= num
* 10 + *p
++ - '0';
3187 while (isdigit (*p
));
3192 /* Do a normal register search. */
3193 while (is_part_of_name (c
))
3199 status
= reg_name_search (name
);
3205 as_bad ("Undefined register: '%s'.", name
);
3211 /* Store info in RESULT if requested by caller. */
3214 result
->number_part
= num
;
3215 if (IS_R_SELECT (p
- 1))
3216 result
->l_r_select
= 1;
3217 else if (IS_L_SELECT (p
- 1))
3218 result
->l_r_select
= 0;
3220 result
->l_r_select
= 0;
3225 /* And finally, it could be a symbol in the absolute section which
3226 is effectively a constant. */
3230 while (is_part_of_name (c
))
3236 if ((sym
= symbol_find (name
)) != NULL
)
3238 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3239 num
= S_GET_VALUE (sym
);
3243 as_bad ("Non-absolute symbol: '%s'.", name
);
3249 /* There is where we'd come for an undefined symbol
3250 or for an empty string. For an empty string we
3251 will return zero. That's a concession made for
3252 compatability with the braindamaged HP assemblers. */
3258 as_bad ("Undefined absolute constant: '%s'.", name
);
3264 /* Store info in RESULT if requested by caller. */
3267 result
->number_part
= num
;
3268 if (IS_R_SELECT (p
- 1))
3269 result
->l_r_select
= 1;
3270 else if (IS_L_SELECT (p
- 1))
3271 result
->l_r_select
= 0;
3273 result
->l_r_select
= 0;
3281 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3283 /* Given NAME, find the register number associated with that name, return
3284 the integer value associated with the given name or -1 on failure. */
3287 reg_name_search (name
)
3290 int middle
, low
, high
;
3294 high
= REG_NAME_CNT
- 1;
3298 middle
= (low
+ high
) / 2;
3299 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3305 return pre_defined_registers
[middle
].value
;
3307 while (low
<= high
);
3313 /* Return nonzero if the given INSN and L/R information will require
3314 a new PA-89 opcode. */
3317 need_89_opcode (insn
, result
)
3319 struct pa_89_fp_reg_struct
*result
;
3321 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3327 /* Parse a condition for a fcmp instruction. Return the numerical
3328 code associated with the condition. */
3331 pa_parse_fp_cmp_cond (s
)
3338 for (i
= 0; i
< 32; i
++)
3340 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3341 strlen (fp_cond_map
[i
].string
)) == 0)
3343 cond
= fp_cond_map
[i
].cond
;
3344 *s
+= strlen (fp_cond_map
[i
].string
);
3345 while (**s
== ' ' || **s
== '\t')
3351 as_bad ("Invalid FP Compare Condition: %c", **s
);
3355 /* Parse an FP operand format completer returning the completer
3358 static fp_operand_format
3359 pa_parse_fp_format (s
)
3368 if (strncasecmp (*s
, "sgl", 3) == 0)
3373 else if (strncasecmp (*s
, "dbl", 3) == 0)
3378 else if (strncasecmp (*s
, "quad", 4) == 0)
3385 format
= ILLEGAL_FMT
;
3386 as_bad ("Invalid FP Operand Format: %3s", *s
);
3393 /* Convert from a selector string into a selector type. */
3396 pa_chk_field_selector (str
)
3399 int middle
, low
, high
;
3403 /* Read past any whitespace. */
3404 /* FIXME: should we read past newlines and formfeeds??? */
3405 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3408 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3409 name
[0] = tolower ((*str
)[0]),
3411 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3412 name
[0] = tolower ((*str
)[0]),
3413 name
[1] = tolower ((*str
)[1]),
3419 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3423 middle
= (low
+ high
) / 2;
3424 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3431 *str
+= strlen (name
) + 1;
3432 return selector_table
[middle
].field_selector
;
3435 while (low
<= high
);
3440 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3443 get_expression (str
)
3449 save_in
= input_line_pointer
;
3450 input_line_pointer
= str
;
3451 seg
= expression (&the_insn
.exp
);
3452 if (!(seg
== absolute_section
3453 || seg
== undefined_section
3454 || SEG_NORMAL (seg
)))
3456 as_warn ("Bad segment in expression.");
3457 expr_end
= input_line_pointer
;
3458 input_line_pointer
= save_in
;
3461 expr_end
= input_line_pointer
;
3462 input_line_pointer
= save_in
;
3466 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3468 pa_get_absolute_expression (insn
, strp
)
3474 insn
->field_selector
= pa_chk_field_selector (strp
);
3475 save_in
= input_line_pointer
;
3476 input_line_pointer
= *strp
;
3477 expression (&insn
->exp
);
3478 if (insn
->exp
.X_op
!= O_constant
)
3480 as_bad ("Bad segment (should be absolute).");
3481 expr_end
= input_line_pointer
;
3482 input_line_pointer
= save_in
;
3485 expr_end
= input_line_pointer
;
3486 input_line_pointer
= save_in
;
3487 return evaluate_absolute (insn
);
3490 /* Evaluate an absolute expression EXP which may be modified by
3491 the selector FIELD_SELECTOR. Return the value of the expression. */
3493 evaluate_absolute (insn
)
3498 int field_selector
= insn
->field_selector
;
3501 value
= exp
.X_add_number
;
3503 switch (field_selector
)
3509 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3511 if (value
& 0x00000400)
3513 value
= (value
& 0xfffff800) >> 11;
3516 /* Sign extend from bit 21. */
3518 if (value
& 0x00000400)
3519 value
|= 0xfffff800;
3524 /* Arithmetic shift right 11 bits. */
3526 value
= (value
& 0xfffff800) >> 11;
3529 /* Set bits 0-20 to zero. */
3531 value
= value
& 0x7ff;
3534 /* Add 0x800 and arithmetic shift right 11 bits. */
3537 value
= (value
& 0xfffff800) >> 11;
3540 /* Set bitgs 0-21 to one. */
3542 value
|= 0xfffff800;
3545 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3547 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3551 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3556 BAD_CASE (field_selector
);
3562 /* Given an argument location specification return the associated
3563 argument location number. */
3566 pa_build_arg_reloc (type_name
)
3570 if (strncasecmp (type_name
, "no", 2) == 0)
3572 if (strncasecmp (type_name
, "gr", 2) == 0)
3574 else if (strncasecmp (type_name
, "fr", 2) == 0)
3576 else if (strncasecmp (type_name
, "fu", 2) == 0)
3579 as_bad ("Invalid argument location: %s\n", type_name
);
3584 /* Encode and return an argument relocation specification for
3585 the given register in the location specified by arg_reloc. */
3588 pa_align_arg_reloc (reg
, arg_reloc
)
3590 unsigned int arg_reloc
;
3592 unsigned int new_reloc
;
3594 new_reloc
= arg_reloc
;
3610 as_bad ("Invalid argument description: %d", reg
);
3616 /* Parse a PA nullification completer (,n). Return nonzero if the
3617 completer was found; return zero if no completer was found. */
3629 if (strncasecmp (*s
, "n", 1) == 0)
3633 as_bad ("Invalid Nullification: (%c)", **s
);
3642 /* Parse a non-negated compare/subtract completer returning the
3643 number (for encoding in instrutions) of the given completer.
3645 ISBRANCH specifies whether or not this is parsing a condition
3646 completer for a branch (vs a nullification completer for a
3647 computational instruction. */
3650 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3655 char *name
= *s
+ 1;
3663 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3667 if (strcmp (name
, "=") == 0)
3671 else if (strcmp (name
, "<") == 0)
3675 else if (strcmp (name
, "<=") == 0)
3679 else if (strcmp (name
, "<<") == 0)
3683 else if (strcmp (name
, "<<=") == 0)
3687 else if (strcasecmp (name
, "sv") == 0)
3691 else if (strcasecmp (name
, "od") == 0)
3695 /* If we have something like addb,n then there is no condition
3697 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3708 /* Reset pointers if this was really a ,n for a branch instruction. */
3709 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3715 /* Parse a negated compare/subtract completer returning the
3716 number (for encoding in instrutions) of the given completer.
3718 ISBRANCH specifies whether or not this is parsing a condition
3719 completer for a branch (vs a nullification completer for a
3720 computational instruction. */
3723 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3728 char *name
= *s
+ 1;
3736 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3740 if (strcasecmp (name
, "tr") == 0)
3744 else if (strcmp (name
, "<>") == 0)
3748 else if (strcmp (name
, ">=") == 0)
3752 else if (strcmp (name
, ">") == 0)
3756 else if (strcmp (name
, ">>=") == 0)
3760 else if (strcmp (name
, ">>") == 0)
3764 else if (strcasecmp (name
, "nsv") == 0)
3768 else if (strcasecmp (name
, "ev") == 0)
3772 /* If we have something like addb,n then there is no condition
3774 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3785 /* Reset pointers if this was really a ,n for a branch instruction. */
3786 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3792 /* Parse a non-negated addition completer returning the number
3793 (for encoding in instrutions) of the given completer.
3795 ISBRANCH specifies whether or not this is parsing a condition
3796 completer for a branch (vs a nullification completer for a
3797 computational instruction. */
3800 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3805 char *name
= *s
+ 1;
3813 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3817 if (strcmp (name
, "=") == 0)
3821 else if (strcmp (name
, "<") == 0)
3825 else if (strcmp (name
, "<=") == 0)
3829 else if (strcasecmp (name
, "nuv") == 0)
3833 else if (strcasecmp (name
, "znv") == 0)
3837 else if (strcasecmp (name
, "sv") == 0)
3841 else if (strcasecmp (name
, "od") == 0)
3845 /* If we have something like addb,n then there is no condition
3847 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3858 /* Reset pointers if this was really a ,n for a branch instruction. */
3859 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3865 /* Parse a negated addition completer returning the number
3866 (for encoding in instrutions) of the given completer.
3868 ISBRANCH specifies whether or not this is parsing a condition
3869 completer for a branch (vs a nullification completer for a
3870 computational instruction. */
3873 pa_parse_neg_add_cmpltr (s
, isbranch
)
3878 char *name
= *s
+ 1;
3886 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3890 if (strcasecmp (name
, "tr") == 0)
3894 else if (strcmp (name
, "<>") == 0)
3898 else if (strcmp (name
, ">=") == 0)
3902 else if (strcmp (name
, ">") == 0)
3906 else if (strcasecmp (name
, "uv") == 0)
3910 else if (strcasecmp (name
, "vnz") == 0)
3914 else if (strcasecmp (name
, "nsv") == 0)
3918 else if (strcasecmp (name
, "ev") == 0)
3922 /* If we have something like addb,n then there is no condition
3924 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3935 /* Reset pointers if this was really a ,n for a branch instruction. */
3936 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3942 /* Handle a .BLOCK type pseudo-op. */
3950 unsigned int temp_size
;
3953 temp_size
= get_absolute_expression ();
3955 /* Always fill with zeros, that's what the HP assembler does. */
3958 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3959 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3960 bzero (p
, temp_size
);
3962 /* Convert 2 bytes at a time. */
3964 for (i
= 0; i
< temp_size
; i
+= 2)
3966 md_number_to_chars (p
+ i
,
3968 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3971 pa_undefine_label ();
3972 demand_empty_rest_of_line ();
3975 /* Handle a .CALL pseudo-op. This involves storing away information
3976 about where arguments are to be found so the linker can detect
3977 (and correct) argument location mismatches between caller and callee. */
3983 pa_call_args (&last_call_desc
);
3984 demand_empty_rest_of_line ();
3987 /* Do the dirty work of building a call descriptor which describes
3988 where the caller placed arguments to a function call. */
3991 pa_call_args (call_desc
)
3992 struct call_desc
*call_desc
;
3995 unsigned int temp
, arg_reloc
;
3997 while (!is_end_of_statement ())
3999 name
= input_line_pointer
;
4000 c
= get_symbol_end ();
4001 /* Process a source argument. */
4002 if ((strncasecmp (name
, "argw", 4) == 0))
4004 temp
= atoi (name
+ 4);
4005 p
= input_line_pointer
;
4007 input_line_pointer
++;
4008 name
= input_line_pointer
;
4009 c
= get_symbol_end ();
4010 arg_reloc
= pa_build_arg_reloc (name
);
4011 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4013 /* Process a return value. */
4014 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4016 p
= input_line_pointer
;
4018 input_line_pointer
++;
4019 name
= input_line_pointer
;
4020 c
= get_symbol_end ();
4021 arg_reloc
= pa_build_arg_reloc (name
);
4022 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4026 as_bad ("Invalid .CALL argument: %s", name
);
4028 p
= input_line_pointer
;
4030 if (!is_end_of_statement ())
4031 input_line_pointer
++;
4035 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4038 is_same_frag (frag1
, frag2
)
4045 else if (frag2
== NULL
)
4047 else if (frag1
== frag2
)
4049 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4050 return (is_same_frag (frag1
, frag2
->fr_next
));
4056 /* Build an entry in the UNWIND subspace from the given function
4057 attributes in CALL_INFO. This is not needed for SOM as using
4058 R_ENTRY and R_EXIT relocations allow the linker to handle building
4059 of the unwind spaces. */
4062 pa_build_unwind_subspace (call_info
)
4063 struct call_info
*call_info
;
4066 asection
*seg
, *save_seg
;
4067 subsegT subseg
, save_subseg
;
4071 /* Get into the right seg/subseg. This may involve creating
4072 the seg the first time through. Make sure to have the
4073 old seg/subseg so that we can reset things when we are done. */
4074 subseg
= SUBSEG_UNWIND
;
4075 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4076 if (seg
== ASEC_NULL
)
4078 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4079 bfd_set_section_flags (stdoutput
, seg
,
4080 SEC_READONLY
| SEC_HAS_CONTENTS
4081 | SEC_LOAD
| SEC_RELOC
);
4085 save_subseg
= now_subseg
;
4086 subseg_set (seg
, subseg
);
4089 /* Get some space to hold relocation information for the unwind
4093 /* Relocation info. for start offset of the function. */
4094 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4095 call_info
->start_symbol
, (offsetT
) 0,
4096 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4101 /* Relocation info. for end offset of the function. */
4102 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4103 call_info
->end_symbol
, (offsetT
) 0,
4104 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4108 unwind
= (char *) &call_info
->ci_unwind
;
4109 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4113 FRAG_APPEND_1_CHAR (c
);
4117 /* Return back to the original segment/subsegment. */
4118 subseg_set (save_seg
, save_subseg
);
4122 /* Process a .CALLINFO pseudo-op. This information is used later
4123 to build unwind descriptors and maybe one day to support
4124 .ENTER and .LEAVE. */
4127 pa_callinfo (unused
)
4133 /* .CALLINFO must appear within a procedure definition. */
4134 if (!within_procedure
)
4135 as_bad (".callinfo is not within a procedure definition");
4137 /* Mark the fact that we found the .CALLINFO for the
4138 current procedure. */
4139 callinfo_found
= TRUE
;
4141 /* Iterate over the .CALLINFO arguments. */
4142 while (!is_end_of_statement ())
4144 name
= input_line_pointer
;
4145 c
= get_symbol_end ();
4146 /* Frame size specification. */
4147 if ((strncasecmp (name
, "frame", 5) == 0))
4149 p
= input_line_pointer
;
4151 input_line_pointer
++;
4152 temp
= get_absolute_expression ();
4153 if ((temp
& 0x3) != 0)
4155 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4159 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4160 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4163 /* Entry register (GR, GR and SR) specifications. */
4164 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4166 p
= input_line_pointer
;
4168 input_line_pointer
++;
4169 temp
= get_absolute_expression ();
4170 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4171 even though %r19 is caller saved. I think this is a bug in
4172 the HP assembler, and we are not going to emulate it. */
4173 if (temp
< 3 || temp
> 18)
4174 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4175 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4177 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4179 p
= input_line_pointer
;
4181 input_line_pointer
++;
4182 temp
= get_absolute_expression ();
4183 /* Similarly the HP assembler takes 31 as the high bound even
4184 though %fr21 is the last callee saved floating point register. */
4185 if (temp
< 12 || temp
> 21)
4186 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4187 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4189 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4191 p
= input_line_pointer
;
4193 input_line_pointer
++;
4194 temp
= get_absolute_expression ();
4196 as_bad ("Value for ENTRY_SR must be 3\n");
4198 /* Note whether or not this function performs any calls. */
4199 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4200 (strncasecmp (name
, "caller", 6) == 0))
4202 p
= input_line_pointer
;
4205 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4207 p
= input_line_pointer
;
4210 /* Should RP be saved into the stack. */
4211 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4213 p
= input_line_pointer
;
4215 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4217 /* Likewise for SP. */
4218 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4220 p
= input_line_pointer
;
4222 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4224 /* Is this an unwindable procedure. If so mark it so
4225 in the unwind descriptor. */
4226 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4228 p
= input_line_pointer
;
4230 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4232 /* Is this an interrupt routine. If so mark it in the
4233 unwind descriptor. */
4234 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4236 p
= input_line_pointer
;
4238 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4242 as_bad ("Invalid .CALLINFO argument: %s", name
);
4244 if (!is_end_of_statement ())
4245 input_line_pointer
++;
4248 demand_empty_rest_of_line ();
4251 /* Switch into the code subspace. */
4257 sd_chain_struct
*sdchain
;
4259 /* First time through it might be necessary to create the
4261 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4263 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4264 pa_def_spaces
[0].spnum
,
4265 pa_def_spaces
[0].loadable
,
4266 pa_def_spaces
[0].defined
,
4267 pa_def_spaces
[0].private,
4268 pa_def_spaces
[0].sort
,
4269 pa_def_spaces
[0].segment
, 0);
4272 SPACE_DEFINED (sdchain
) = 1;
4273 subseg_set (text_section
, SUBSEG_CODE
);
4274 demand_empty_rest_of_line ();
4277 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4278 the .comm pseudo-op has the following symtax:
4280 <label> .comm <length>
4282 where <label> is optional and is a symbol whose address will be the start of
4283 a block of memory <length> bytes long. <length> must be an absolute
4284 expression. <length> bytes will be allocated in the current space
4293 label_symbol_struct
*label_symbol
= pa_get_label ();
4296 symbol
= label_symbol
->lss_label
;
4301 size
= get_absolute_expression ();
4305 /* It is incorrect to check S_IS_DEFINED at this point as
4306 the symbol will *always* be defined. FIXME. How to
4307 correctly determine when this label really as been
4309 if (S_GET_VALUE (symbol
))
4311 if (S_GET_VALUE (symbol
) != size
)
4313 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4314 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4320 S_SET_VALUE (symbol
, size
);
4321 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4322 S_SET_EXTERNAL (symbol
);
4325 demand_empty_rest_of_line ();
4328 /* Process a .END pseudo-op. */
4334 demand_empty_rest_of_line ();
4337 /* Process a .ENTER pseudo-op. This is not supported. */
4345 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4351 if (!within_procedure
)
4352 as_bad ("Misplaced .entry. Ignored.");
4355 if (!callinfo_found
)
4356 as_bad ("Missing .callinfo.");
4358 demand_empty_rest_of_line ();
4359 within_entry_exit
= TRUE
;
4361 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4362 It will not be on if no .EXPORT pseudo-op exists (static function). */
4363 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4366 /* SOM defers building of unwind descriptors until the link phase.
4367 The assembler is responsible for creating an R_ENTRY relocation
4368 to mark the beginning of a region and hold the unwind bits, and
4369 for creating an R_EXIT relocation to mark the end of the region.
4371 FIXME. ELF should be using the same conventions! The problem
4372 is an unwind requires too much relocation space. Hmmm. Maybe
4373 if we split the unwind bits up between the relocations which
4374 denote the entry and exit points. */
4376 char *where
= frag_more (0);
4378 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4379 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4380 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4381 (char *) &last_call_info
->ci_unwind
.descriptor
);
4386 /* Handle a .EQU pseudo-op. */
4392 label_symbol_struct
*label_symbol
= pa_get_label ();
4397 symbol
= label_symbol
->lss_label
;
4398 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4399 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4404 as_bad (".REG must use a label");
4406 as_bad (".EQU must use a label");
4409 pa_undefine_label ();
4410 demand_empty_rest_of_line ();
4413 /* Helper function. Does processing for the end of a function. This
4414 usually involves creating some relocations or building special
4415 symbols to mark the end of the function. */
4422 where
= frag_more (0);
4425 /* Mark the end of the function, stuff away the location of the frag
4426 for the end of the function, and finally call pa_build_unwind_subspace
4427 to add an entry in the unwind table. */
4428 hppa_elf_mark_end_of_function ();
4429 pa_build_unwind_subspace (last_call_info
);
4431 /* SOM defers building of unwind descriptors until the link phase.
4432 The assembler is responsible for creating an R_ENTRY relocation
4433 to mark the beginning of a region and hold the unwind bits, and
4434 for creating an R_EXIT relocation to mark the end of the region.
4436 FIXME. ELF should be using the same conventions! The problem
4437 is an unwind requires too much relocation space. Hmmm. Maybe
4438 if we split the unwind bits up between the relocations which
4439 denote the entry and exit points. */
4440 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4441 last_call_info
->start_symbol
, (offsetT
) 0,
4442 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4446 /* Process a .EXIT pseudo-op. */
4452 if (!within_procedure
)
4453 as_bad (".EXIT must appear within a procedure");
4456 if (!callinfo_found
)
4457 as_bad ("Missing .callinfo");
4460 if (!within_entry_exit
)
4461 as_bad ("No .ENTRY for this .EXIT");
4464 within_entry_exit
= FALSE
;
4469 demand_empty_rest_of_line ();
4472 /* Process a .EXPORT directive. This makes functions external
4473 and provides information such as argument relocation entries
4483 name
= input_line_pointer
;
4484 c
= get_symbol_end ();
4485 /* Make sure the given symbol exists. */
4486 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4488 as_bad ("Cannot define export symbol: %s\n", name
);
4489 p
= input_line_pointer
;
4491 input_line_pointer
++;
4495 /* OK. Set the external bits and process argument relocations. */
4496 S_SET_EXTERNAL (symbol
);
4497 p
= input_line_pointer
;
4499 if (!is_end_of_statement ())
4501 input_line_pointer
++;
4502 pa_type_args (symbol
, 1);
4504 pa_build_symextn_section ();
4509 demand_empty_rest_of_line ();
4512 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4515 pa_type_args (symbolP
, is_export
)
4520 unsigned int temp
, arg_reloc
;
4521 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4522 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4524 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4527 input_line_pointer
+= 8;
4528 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4529 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4530 type
= SYMBOL_TYPE_ABSOLUTE
;
4532 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4534 input_line_pointer
+= 4;
4535 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4536 instead one should be IMPORTing/EXPORTing ENTRY types.
4538 Complain if one tries to EXPORT a CODE type since that's never
4539 done. Both GCC and HP C still try to IMPORT CODE types, so
4540 silently fix them to be ENTRY types. */
4541 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4544 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4546 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4547 type
= SYMBOL_TYPE_ENTRY
;
4551 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4552 type
= SYMBOL_TYPE_CODE
;
4555 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4557 input_line_pointer
+= 4;
4558 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4559 type
= SYMBOL_TYPE_DATA
;
4561 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4563 input_line_pointer
+= 5;
4564 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4565 type
= SYMBOL_TYPE_ENTRY
;
4567 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4569 input_line_pointer
+= 9;
4570 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4571 type
= SYMBOL_TYPE_MILLICODE
;
4573 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4575 input_line_pointer
+= 6;
4576 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4577 type
= SYMBOL_TYPE_PLABEL
;
4579 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4581 input_line_pointer
+= 8;
4582 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4583 type
= SYMBOL_TYPE_PRI_PROG
;
4585 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4587 input_line_pointer
+= 8;
4588 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4589 type
= SYMBOL_TYPE_SEC_PROG
;
4592 /* SOM requires much more information about symbol types
4593 than BFD understands. This is how we get this information
4594 to the SOM BFD backend. */
4595 #ifdef obj_set_symbol_type
4596 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4599 /* Now that the type of the exported symbol has been handled,
4600 handle any argument relocation information. */
4601 while (!is_end_of_statement ())
4603 if (*input_line_pointer
== ',')
4604 input_line_pointer
++;
4605 name
= input_line_pointer
;
4606 c
= get_symbol_end ();
4607 /* Argument sources. */
4608 if ((strncasecmp (name
, "argw", 4) == 0))
4610 p
= input_line_pointer
;
4612 input_line_pointer
++;
4613 temp
= atoi (name
+ 4);
4614 name
= input_line_pointer
;
4615 c
= get_symbol_end ();
4616 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4617 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4618 *input_line_pointer
= c
;
4620 /* The return value. */
4621 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4623 p
= input_line_pointer
;
4625 input_line_pointer
++;
4626 name
= input_line_pointer
;
4627 c
= get_symbol_end ();
4628 arg_reloc
= pa_build_arg_reloc (name
);
4629 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4630 *input_line_pointer
= c
;
4632 /* Privelege level. */
4633 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4635 p
= input_line_pointer
;
4637 input_line_pointer
++;
4638 temp
= atoi (input_line_pointer
);
4639 c
= get_symbol_end ();
4640 *input_line_pointer
= c
;
4644 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4645 p
= input_line_pointer
;
4648 if (!is_end_of_statement ())
4649 input_line_pointer
++;
4653 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4654 assembly file must either be defined in the assembly file, or
4655 explicitly IMPORTED from another. */
4664 name
= input_line_pointer
;
4665 c
= get_symbol_end ();
4667 symbol
= symbol_find_or_make (name
);
4668 p
= input_line_pointer
;
4671 if (!is_end_of_statement ())
4673 input_line_pointer
++;
4674 pa_type_args (symbol
, 0);
4678 /* Sigh. To be compatable with the HP assembler and to help
4679 poorly written assembly code, we assign a type based on
4680 the the current segment. Note only BSF_FUNCTION really
4681 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4682 if (now_seg
== text_section
)
4683 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4685 /* If the section is undefined, then the symbol is undefined
4686 Since this is an import, leave the section undefined. */
4687 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4690 demand_empty_rest_of_line ();
4693 /* Handle a .LABEL pseudo-op. */
4701 name
= input_line_pointer
;
4702 c
= get_symbol_end ();
4704 if (strlen (name
) > 0)
4707 p
= input_line_pointer
;
4712 as_warn ("Missing label name on .LABEL");
4715 if (!is_end_of_statement ())
4717 as_warn ("extra .LABEL arguments ignored.");
4718 ignore_rest_of_line ();
4720 demand_empty_rest_of_line ();
4723 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4732 /* Handle a .ORIGIN pseudo-op. */
4739 pa_undefine_label ();
4742 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4743 is for static functions. FIXME. Should share more code with .EXPORT. */
4752 name
= input_line_pointer
;
4753 c
= get_symbol_end ();
4755 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4757 as_bad ("Cannot define static symbol: %s\n", name
);
4758 p
= input_line_pointer
;
4760 input_line_pointer
++;
4764 S_CLEAR_EXTERNAL (symbol
);
4765 p
= input_line_pointer
;
4767 if (!is_end_of_statement ())
4769 input_line_pointer
++;
4770 pa_type_args (symbol
, 0);
4774 demand_empty_rest_of_line ();
4777 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4778 of a procedure from a syntatical point of view. */
4784 struct call_info
*call_info
;
4786 if (within_procedure
)
4787 as_fatal ("Nested procedures");
4789 /* Reset global variables for new procedure. */
4790 callinfo_found
= FALSE
;
4791 within_procedure
= TRUE
;
4793 /* Create another call_info structure. */
4794 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4797 as_fatal ("Cannot allocate unwind descriptor\n");
4799 bzero (call_info
, sizeof (struct call_info
));
4801 call_info
->ci_next
= NULL
;
4803 if (call_info_root
== NULL
)
4805 call_info_root
= call_info
;
4806 last_call_info
= call_info
;
4810 last_call_info
->ci_next
= call_info
;
4811 last_call_info
= call_info
;
4814 /* set up defaults on call_info structure */
4816 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4817 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4818 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4820 /* If we got a .PROC pseudo-op, we know that the function is defined
4821 locally. Make sure it gets into the symbol table. */
4823 label_symbol_struct
*label_symbol
= pa_get_label ();
4827 if (label_symbol
->lss_label
)
4829 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4830 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4833 as_bad ("Missing function name for .PROC (corrupted label chain)");
4836 last_call_info
->start_symbol
= NULL
;
4839 demand_empty_rest_of_line ();
4842 /* Process the syntatical end of a procedure. Make sure all the
4843 appropriate pseudo-ops were found within the procedure. */
4850 if (!within_procedure
)
4851 as_bad ("misplaced .procend");
4853 if (!callinfo_found
)
4854 as_bad ("Missing .callinfo for this procedure");
4856 if (within_entry_exit
)
4857 as_bad ("Missing .EXIT for a .ENTRY");
4860 /* ELF needs to mark the end of each function so that it can compute
4861 the size of the function (apparently its needed in the symbol table. */
4862 hppa_elf_mark_end_of_function ();
4865 within_procedure
= FALSE
;
4866 demand_empty_rest_of_line ();
4869 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4870 then create a new space entry to hold the information specified
4871 by the parameters to the .SPACE directive. */
4873 static sd_chain_struct
*
4874 pa_parse_space_stmt (space_name
, create_flag
)
4878 char *name
, *ptemp
, c
;
4879 char loadable
, defined
, private, sort
;
4881 asection
*seg
= NULL
;
4882 sd_chain_struct
*space
;
4884 /* load default values */
4890 if (strcmp (space_name
, "$TEXT$") == 0)
4892 seg
= pa_def_spaces
[0].segment
;
4893 sort
= pa_def_spaces
[0].sort
;
4895 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4897 seg
= pa_def_spaces
[1].segment
;
4898 sort
= pa_def_spaces
[1].sort
;
4901 if (!is_end_of_statement ())
4903 print_errors
= FALSE
;
4904 ptemp
= input_line_pointer
+ 1;
4905 /* First see if the space was specified as a number rather than
4906 as a name. According to the PA assembly manual the rest of
4907 the line should be ignored. */
4908 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
4909 input_line_pointer
= ptemp
;
4912 while (!is_end_of_statement ())
4914 input_line_pointer
++;
4915 name
= input_line_pointer
;
4916 c
= get_symbol_end ();
4917 if ((strncasecmp (name
, "spnum", 5) == 0))
4919 *input_line_pointer
= c
;
4920 input_line_pointer
++;
4921 spnum
= get_absolute_expression ();
4923 else if ((strncasecmp (name
, "sort", 4) == 0))
4925 *input_line_pointer
= c
;
4926 input_line_pointer
++;
4927 sort
= get_absolute_expression ();
4929 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4931 *input_line_pointer
= c
;
4934 else if ((strncasecmp (name
, "notdefined", 10) == 0))
4936 *input_line_pointer
= c
;
4939 else if ((strncasecmp (name
, "private", 7) == 0))
4941 *input_line_pointer
= c
;
4946 as_bad ("Invalid .SPACE argument");
4947 *input_line_pointer
= c
;
4948 if (!is_end_of_statement ())
4949 input_line_pointer
++;
4953 print_errors
= TRUE
;
4956 if (create_flag
&& seg
== NULL
)
4957 seg
= subseg_new (space_name
, 0);
4959 /* If create_flag is nonzero, then create the new space with
4960 the attributes computed above. Else set the values in
4961 an already existing space -- this can only happen for
4962 the first occurence of a built-in space. */
4964 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
4965 private, sort
, seg
, 1);
4968 space
= is_defined_space (space_name
);
4969 SPACE_SPNUM (space
) = spnum
;
4970 SPACE_DEFINED (space
) = defined
& 1;
4971 SPACE_USER_DEFINED (space
) = 1;
4972 space
->sd_seg
= seg
;
4975 #ifdef obj_set_section_attributes
4976 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
4982 /* Handle a .SPACE pseudo-op; this switches the current space to the
4983 given space, creating the new space if necessary. */
4989 char *name
, c
, *space_name
, *save_s
;
4991 sd_chain_struct
*sd_chain
;
4993 if (within_procedure
)
4995 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
4996 ignore_rest_of_line ();
5000 /* Check for some of the predefined spaces. FIXME: most of the code
5001 below is repeated several times, can we extract the common parts
5002 and place them into a subroutine or something similar? */
5003 /* FIXME Is this (and the next IF stmt) really right?
5004 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5005 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5007 input_line_pointer
+= 6;
5008 sd_chain
= is_defined_space ("$TEXT$");
5009 if (sd_chain
== NULL
)
5010 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5011 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5012 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5014 current_space
= sd_chain
;
5015 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5017 = pa_subsegment_to_subspace (text_section
,
5018 sd_chain
->sd_last_subseg
);
5019 demand_empty_rest_of_line ();
5022 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5024 input_line_pointer
+= 9;
5025 sd_chain
= is_defined_space ("$PRIVATE$");
5026 if (sd_chain
== NULL
)
5027 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5028 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5029 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5031 current_space
= sd_chain
;
5032 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5034 = pa_subsegment_to_subspace (data_section
,
5035 sd_chain
->sd_last_subseg
);
5036 demand_empty_rest_of_line ();
5039 if (!strncasecmp (input_line_pointer
,
5040 GDB_DEBUG_SPACE_NAME
,
5041 strlen (GDB_DEBUG_SPACE_NAME
)))
5043 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5044 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5045 if (sd_chain
== NULL
)
5046 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5047 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5048 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5050 current_space
= sd_chain
;
5053 asection
*gdb_section
5054 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5056 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5058 = pa_subsegment_to_subspace (gdb_section
,
5059 sd_chain
->sd_last_subseg
);
5061 demand_empty_rest_of_line ();
5065 /* It could be a space specified by number. */
5067 save_s
= input_line_pointer
;
5068 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5070 if (sd_chain
= pa_find_space_by_number (temp
))
5072 current_space
= sd_chain
;
5074 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5076 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5077 sd_chain
->sd_last_subseg
);
5078 demand_empty_rest_of_line ();
5083 /* Not a number, attempt to create a new space. */
5085 input_line_pointer
= save_s
;
5086 name
= input_line_pointer
;
5087 c
= get_symbol_end ();
5088 space_name
= xmalloc (strlen (name
) + 1);
5089 strcpy (space_name
, name
);
5090 *input_line_pointer
= c
;
5092 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5093 current_space
= sd_chain
;
5095 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5096 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5097 sd_chain
->sd_last_subseg
);
5098 demand_empty_rest_of_line ();
5102 /* Switch to a new space. (I think). FIXME. */
5111 sd_chain_struct
*space
;
5113 name
= input_line_pointer
;
5114 c
= get_symbol_end ();
5115 space
= is_defined_space (name
);
5119 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5122 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5124 *input_line_pointer
= c
;
5125 demand_empty_rest_of_line ();
5128 /* If VALUE is an exact power of two between zero and 2^31, then
5129 return log2 (VALUE). Else return -1. */
5137 while ((1 << shift
) != value
&& shift
< 32)
5146 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5147 given subspace, creating the new subspace if necessary.
5149 FIXME. Should mirror pa_space more closely, in particular how
5150 they're broken up into subroutines. */
5153 pa_subspace (unused
)
5156 char *name
, *ss_name
, *alias
, c
;
5157 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5158 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5159 sd_chain_struct
*space
;
5160 ssd_chain_struct
*ssd
;
5163 if (within_procedure
)
5165 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5166 ignore_rest_of_line ();
5170 name
= input_line_pointer
;
5171 c
= get_symbol_end ();
5172 ss_name
= xmalloc (strlen (name
) + 1);
5173 strcpy (ss_name
, name
);
5174 *input_line_pointer
= c
;
5176 /* Load default values. */
5189 space
= current_space
;
5190 ssd
= is_defined_subspace (ss_name
);
5191 /* Allow user to override the builtin attributes of subspaces. But
5192 only allow the attributes to be changed once! */
5193 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5195 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5196 if (!is_end_of_statement ())
5197 as_warn ("Parameters of an existing subspace can\'t be modified");
5198 demand_empty_rest_of_line ();
5203 /* A new subspace. Load default values if it matches one of
5204 the builtin subspaces. */
5206 while (pa_def_subspaces
[i
].name
)
5208 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5210 loadable
= pa_def_subspaces
[i
].loadable
;
5211 common
= pa_def_subspaces
[i
].common
;
5212 dup_common
= pa_def_subspaces
[i
].dup_common
;
5213 code_only
= pa_def_subspaces
[i
].code_only
;
5214 zero
= pa_def_subspaces
[i
].zero
;
5215 space_index
= pa_def_subspaces
[i
].space_index
;
5216 alignment
= pa_def_subspaces
[i
].alignment
;
5217 quadrant
= pa_def_subspaces
[i
].quadrant
;
5218 access
= pa_def_subspaces
[i
].access
;
5219 sort
= pa_def_subspaces
[i
].sort
;
5220 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5221 alias
= pa_def_subspaces
[i
].alias
;
5228 /* We should be working with a new subspace now. Fill in
5229 any information as specified by the user. */
5230 if (!is_end_of_statement ())
5232 input_line_pointer
++;
5233 while (!is_end_of_statement ())
5235 name
= input_line_pointer
;
5236 c
= get_symbol_end ();
5237 if ((strncasecmp (name
, "quad", 4) == 0))
5239 *input_line_pointer
= c
;
5240 input_line_pointer
++;
5241 quadrant
= get_absolute_expression ();
5243 else if ((strncasecmp (name
, "align", 5) == 0))
5245 *input_line_pointer
= c
;
5246 input_line_pointer
++;
5247 alignment
= get_absolute_expression ();
5248 if (log2 (alignment
) == -1)
5250 as_bad ("Alignment must be a power of 2");
5254 else if ((strncasecmp (name
, "access", 6) == 0))
5256 *input_line_pointer
= c
;
5257 input_line_pointer
++;
5258 access
= get_absolute_expression ();
5260 else if ((strncasecmp (name
, "sort", 4) == 0))
5262 *input_line_pointer
= c
;
5263 input_line_pointer
++;
5264 sort
= get_absolute_expression ();
5266 else if ((strncasecmp (name
, "code_only", 9) == 0))
5268 *input_line_pointer
= c
;
5271 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5273 *input_line_pointer
= c
;
5276 else if ((strncasecmp (name
, "common", 6) == 0))
5278 *input_line_pointer
= c
;
5281 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5283 *input_line_pointer
= c
;
5286 else if ((strncasecmp (name
, "zero", 4) == 0))
5288 *input_line_pointer
= c
;
5291 else if ((strncasecmp (name
, "first", 5) == 0))
5292 as_bad ("FIRST not supported as a .SUBSPACE argument");
5294 as_bad ("Invalid .SUBSPACE argument");
5295 if (!is_end_of_statement ())
5296 input_line_pointer
++;
5300 /* Compute a reasonable set of BFD flags based on the information
5301 in the .subspace directive. */
5302 applicable
= bfd_applicable_section_flags (stdoutput
);
5305 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5308 if (common
|| dup_common
)
5309 flags
|= SEC_IS_COMMON
;
5311 /* This is a zero-filled subspace (eg BSS). */
5315 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5316 applicable
&= flags
;
5318 /* If this is an existing subspace, then we want to use the
5319 segment already associated with the subspace.
5321 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5322 lots of sections. It might be a problem in the PA ELF
5323 code, I do not know yet. For now avoid creating anything
5324 but the "standard" sections for ELF. */
5326 section
= ssd
->ssd_seg
;
5328 section
= subseg_new (alias
, 0);
5329 else if (!alias
&& USE_ALIASES
)
5331 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5332 demand_empty_rest_of_line ();
5336 section
= subseg_new (ss_name
, 0);
5338 /* Now set the flags. */
5339 bfd_set_section_flags (stdoutput
, section
, applicable
);
5341 /* Record any alignment request for this section. */
5342 record_alignment (section
, log2 (alignment
));
5344 /* Set the starting offset for this section. */
5345 bfd_set_section_vma (stdoutput
, section
,
5346 pa_subspace_start (space
, quadrant
));
5348 /* Now that all the flags are set, update an existing subspace,
5349 or create a new one. */
5352 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5353 code_only
, common
, dup_common
,
5354 sort
, zero
, access
, space_index
,
5355 alignment
, quadrant
,
5358 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5360 dup_common
, zero
, sort
,
5361 access
, space_index
,
5362 alignment
, quadrant
, section
);
5364 demand_empty_rest_of_line ();
5365 current_subspace
->ssd_seg
= section
;
5366 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5368 SUBSPACE_DEFINED (current_subspace
) = 1;
5372 /* Create default space and subspace dictionaries. */
5379 space_dict_root
= NULL
;
5380 space_dict_last
= NULL
;
5383 while (pa_def_spaces
[i
].name
)
5387 /* Pick the right name to use for the new section. */
5388 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5389 name
= pa_def_spaces
[i
].alias
;
5391 name
= pa_def_spaces
[i
].name
;
5393 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5394 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5395 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5396 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5397 pa_def_spaces
[i
].segment
, 0);
5402 while (pa_def_subspaces
[i
].name
)
5405 int applicable
, subsegment
;
5406 asection
*segment
= NULL
;
5407 sd_chain_struct
*space
;
5409 /* Pick the right name for the new section and pick the right
5410 subsegment number. */
5411 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5413 name
= pa_def_subspaces
[i
].alias
;
5414 subsegment
= pa_def_subspaces
[i
].subsegment
;
5418 name
= pa_def_subspaces
[i
].name
;
5422 /* Create the new section. */
5423 segment
= subseg_new (name
, subsegment
);
5426 /* For SOM we want to replace the standard .text, .data, and .bss
5427 sections with our own. */
5428 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5430 text_section
= segment
;
5431 applicable
= bfd_applicable_section_flags (stdoutput
);
5432 bfd_set_section_flags (stdoutput
, text_section
,
5433 applicable
& (SEC_ALLOC
| SEC_LOAD
5434 | SEC_RELOC
| SEC_CODE
5436 | SEC_HAS_CONTENTS
));
5438 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5440 data_section
= segment
;
5441 applicable
= bfd_applicable_section_flags (stdoutput
);
5442 bfd_set_section_flags (stdoutput
, data_section
,
5443 applicable
& (SEC_ALLOC
| SEC_LOAD
5445 | SEC_HAS_CONTENTS
));
5449 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5451 bss_section
= segment
;
5452 applicable
= bfd_applicable_section_flags (stdoutput
);
5453 bfd_set_section_flags (stdoutput
, bss_section
,
5454 applicable
& SEC_ALLOC
);
5457 /* Find the space associated with this subspace. */
5458 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5459 def_space_index
].segment
);
5462 as_fatal ("Internal error: Unable to find containing space for %s.",
5463 pa_def_subspaces
[i
].name
);
5466 create_new_subspace (space
, name
,
5467 pa_def_subspaces
[i
].loadable
,
5468 pa_def_subspaces
[i
].code_only
,
5469 pa_def_subspaces
[i
].common
,
5470 pa_def_subspaces
[i
].dup_common
,
5471 pa_def_subspaces
[i
].zero
,
5472 pa_def_subspaces
[i
].sort
,
5473 pa_def_subspaces
[i
].access
,
5474 pa_def_subspaces
[i
].space_index
,
5475 pa_def_subspaces
[i
].alignment
,
5476 pa_def_subspaces
[i
].quadrant
,
5484 /* Create a new space NAME, with the appropriate flags as defined
5485 by the given parameters. */
5487 static sd_chain_struct
*
5488 create_new_space (name
, spnum
, loadable
, defined
, private,
5489 sort
, seg
, user_defined
)
5499 sd_chain_struct
*chain_entry
;
5501 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5503 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5506 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5507 strcpy (SPACE_NAME (chain_entry
), name
);
5508 SPACE_DEFINED (chain_entry
) = defined
;
5509 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5510 SPACE_SPNUM (chain_entry
) = spnum
;
5512 chain_entry
->sd_seg
= seg
;
5513 chain_entry
->sd_last_subseg
= -1;
5514 chain_entry
->sd_next
= NULL
;
5516 /* Find spot for the new space based on its sort key. */
5517 if (!space_dict_last
)
5518 space_dict_last
= chain_entry
;
5520 if (space_dict_root
== NULL
)
5521 space_dict_root
= chain_entry
;
5524 sd_chain_struct
*chain_pointer
;
5525 sd_chain_struct
*prev_chain_pointer
;
5527 chain_pointer
= space_dict_root
;
5528 prev_chain_pointer
= NULL
;
5530 while (chain_pointer
)
5532 prev_chain_pointer
= chain_pointer
;
5533 chain_pointer
= chain_pointer
->sd_next
;
5536 /* At this point we've found the correct place to add the new
5537 entry. So add it and update the linked lists as appropriate. */
5538 if (prev_chain_pointer
)
5540 chain_entry
->sd_next
= chain_pointer
;
5541 prev_chain_pointer
->sd_next
= chain_entry
;
5545 space_dict_root
= chain_entry
;
5546 chain_entry
->sd_next
= chain_pointer
;
5549 if (chain_entry
->sd_next
== NULL
)
5550 space_dict_last
= chain_entry
;
5553 /* This is here to catch predefined spaces which do not get
5554 modified by the user's input. Another call is found at
5555 the bottom of pa_parse_space_stmt to handle cases where
5556 the user modifies a predefined space. */
5557 #ifdef obj_set_section_attributes
5558 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5564 /* Create a new subspace NAME, with the appropriate flags as defined
5565 by the given parameters.
5567 Add the new subspace to the subspace dictionary chain in numerical
5568 order as defined by the SORT entries. */
5570 static ssd_chain_struct
*
5571 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5572 dup_common
, is_zero
, sort
, access
, space_index
,
5573 alignment
, quadrant
, seg
)
5574 sd_chain_struct
*space
;
5576 char loadable
, code_only
, common
, dup_common
, is_zero
;
5584 ssd_chain_struct
*chain_entry
;
5586 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5588 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5590 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5591 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5593 /* Initialize subspace_defined. When we hit a .subspace directive
5594 we'll set it to 1 which "locks-in" the subspace attributes. */
5595 SUBSPACE_DEFINED (chain_entry
) = 0;
5597 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5598 chain_entry
->ssd_seg
= seg
;
5599 chain_entry
->ssd_next
= NULL
;
5601 /* Find spot for the new subspace based on its sort key. */
5602 if (space
->sd_subspaces
== NULL
)
5603 space
->sd_subspaces
= chain_entry
;
5606 ssd_chain_struct
*chain_pointer
;
5607 ssd_chain_struct
*prev_chain_pointer
;
5609 chain_pointer
= space
->sd_subspaces
;
5610 prev_chain_pointer
= NULL
;
5612 while (chain_pointer
)
5614 prev_chain_pointer
= chain_pointer
;
5615 chain_pointer
= chain_pointer
->ssd_next
;
5618 /* Now we have somewhere to put the new entry. Insert it and update
5620 if (prev_chain_pointer
)
5622 chain_entry
->ssd_next
= chain_pointer
;
5623 prev_chain_pointer
->ssd_next
= chain_entry
;
5627 space
->sd_subspaces
= chain_entry
;
5628 chain_entry
->ssd_next
= chain_pointer
;
5632 #ifdef obj_set_subsection_attributes
5633 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5640 /* Update the information for the given subspace based upon the
5641 various arguments. Return the modified subspace chain entry. */
5643 static ssd_chain_struct
*
5644 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5645 zero
, access
, space_index
, alignment
, quadrant
, section
)
5646 sd_chain_struct
*space
;
5660 ssd_chain_struct
*chain_entry
;
5662 chain_entry
= is_defined_subspace (name
);
5664 #ifdef obj_set_subsection_attributes
5665 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5672 /* Return the space chain entry for the space with the name NAME or
5673 NULL if no such space exists. */
5675 static sd_chain_struct
*
5676 is_defined_space (name
)
5679 sd_chain_struct
*chain_pointer
;
5681 for (chain_pointer
= space_dict_root
;
5683 chain_pointer
= chain_pointer
->sd_next
)
5685 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5686 return chain_pointer
;
5689 /* No mapping from segment to space was found. Return NULL. */
5693 /* Find and return the space associated with the given seg. If no mapping
5694 from the given seg to a space is found, then return NULL.
5696 Unlike subspaces, the number of spaces is not expected to grow much,
5697 so a linear exhaustive search is OK here. */
5699 static sd_chain_struct
*
5700 pa_segment_to_space (seg
)
5703 sd_chain_struct
*space_chain
;
5705 /* Walk through each space looking for the correct mapping. */
5706 for (space_chain
= space_dict_root
;
5708 space_chain
= space_chain
->sd_next
)
5710 if (space_chain
->sd_seg
== seg
)
5714 /* Mapping was not found. Return NULL. */
5718 /* Return the space chain entry for the subspace with the name NAME or
5719 NULL if no such subspace exists.
5721 Uses a linear search through all the spaces and subspaces, this may
5722 not be appropriate if we ever being placing each function in its
5725 static ssd_chain_struct
*
5726 is_defined_subspace (name
)
5729 sd_chain_struct
*space_chain
;
5730 ssd_chain_struct
*subspace_chain
;
5732 /* Walk through each space. */
5733 for (space_chain
= space_dict_root
;
5735 space_chain
= space_chain
->sd_next
)
5737 /* Walk through each subspace looking for a name which matches. */
5738 for (subspace_chain
= space_chain
->sd_subspaces
;
5740 subspace_chain
= subspace_chain
->ssd_next
)
5741 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5742 return subspace_chain
;
5745 /* Subspace wasn't found. Return NULL. */
5749 /* Find and return the subspace associated with the given seg. If no
5750 mapping from the given seg to a subspace is found, then return NULL.
5752 If we ever put each procedure/function within its own subspace
5753 (to make life easier on the compiler and linker), then this will have
5754 to become more efficient. */
5756 static ssd_chain_struct
*
5757 pa_subsegment_to_subspace (seg
, subseg
)
5761 sd_chain_struct
*space_chain
;
5762 ssd_chain_struct
*subspace_chain
;
5764 /* Walk through each space. */
5765 for (space_chain
= space_dict_root
;
5767 space_chain
= space_chain
->sd_next
)
5769 if (space_chain
->sd_seg
== seg
)
5771 /* Walk through each subspace within each space looking for
5772 the correct mapping. */
5773 for (subspace_chain
= space_chain
->sd_subspaces
;
5775 subspace_chain
= subspace_chain
->ssd_next
)
5776 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5777 return subspace_chain
;
5781 /* No mapping from subsegment to subspace found. Return NULL. */
5785 /* Given a number, try and find a space with the name number.
5787 Return a pointer to a space dictionary chain entry for the space
5788 that was found or NULL on failure. */
5790 static sd_chain_struct
*
5791 pa_find_space_by_number (number
)
5794 sd_chain_struct
*space_chain
;
5796 for (space_chain
= space_dict_root
;
5798 space_chain
= space_chain
->sd_next
)
5800 if (SPACE_SPNUM (space_chain
) == number
)
5804 /* No appropriate space found. Return NULL. */
5808 /* Return the starting address for the given subspace. If the starting
5809 address is unknown then return zero. */
5812 pa_subspace_start (space
, quadrant
)
5813 sd_chain_struct
*space
;
5816 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5817 is not correct for the PA OSF1 port. */
5818 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5820 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5826 /* FIXME. Needs documentation. */
5828 pa_next_subseg (space
)
5829 sd_chain_struct
*space
;
5832 space
->sd_last_subseg
++;
5833 return space
->sd_last_subseg
;
5836 /* Helper function for pa_stringer. Used to find the end of
5843 unsigned int c
= *s
& CHAR_MASK
;
5855 /* Handle a .STRING type pseudo-op. */
5858 pa_stringer (append_zero
)
5861 char *s
, num_buf
[4];
5865 /* Preprocess the string to handle PA-specific escape sequences.
5866 For example, \xDD where DD is a hexidecimal number should be
5867 changed to \OOO where OOO is an octal number. */
5869 /* Skip the opening quote. */
5870 s
= input_line_pointer
+ 1;
5872 while (is_a_char (c
= pa_stringer_aux (s
++)))
5879 /* Handle \x<num>. */
5882 unsigned int number
;
5887 /* Get pas the 'x'. */
5889 for (num_digit
= 0, number
= 0, dg
= *s
;
5891 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5892 || (dg
>= 'A' && dg
<= 'F'));
5896 number
= number
* 16 + dg
- '0';
5897 else if (dg
>= 'a' && dg
<= 'f')
5898 number
= number
* 16 + dg
- 'a' + 10;
5900 number
= number
* 16 + dg
- 'A' + 10;
5910 sprintf (num_buf
, "%02o", number
);
5913 sprintf (num_buf
, "%03o", number
);
5916 for (i
= 0; i
<= num_digit
; i
++)
5917 s_start
[i
] = num_buf
[i
];
5921 /* This might be a "\"", skip over the escaped char. */
5928 stringer (append_zero
);
5929 pa_undefine_label ();
5932 /* Handle a .VERSION pseudo-op. */
5939 pa_undefine_label ();
5942 /* Handle a .COPYRIGHT pseudo-op. */
5945 pa_copyright (unused
)
5949 pa_undefine_label ();
5952 /* Just like a normal cons, but when finished we have to undefine
5953 the latest space label. */
5960 pa_undefine_label ();
5963 /* Switch to the data space. As usual delete our label. */
5970 pa_undefine_label ();
5973 /* Like float_cons, but we need to undefine our label. */
5976 pa_float_cons (float_type
)
5979 float_cons (float_type
);
5980 pa_undefine_label ();
5983 /* Like s_fill, but delete our label when finished. */
5990 pa_undefine_label ();
5993 /* Like lcomm, but delete our label when finished. */
5996 pa_lcomm (needs_align
)
5999 s_lcomm (needs_align
);
6000 pa_undefine_label ();
6003 /* Like lsym, but delete our label when finished. */
6010 pa_undefine_label ();
6013 /* Switch to the text space. Like s_text, but delete our
6014 label when finished. */
6020 pa_undefine_label ();
6023 /* On the PA relocations which involve function symbols must not be
6024 adjusted. This so that the linker can know when/how to create argument
6025 relocation stubs for indirect calls and calls to static functions.
6027 FIXME. Also reject R_HPPA relocations which are 32 bits
6028 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6029 needs to generate relocations to push the addend and symbol value
6030 onto the stack, add them, then pop the value off the stack and
6031 use it in a relocation -- yuk. */
6034 hppa_fix_adjustable (fixp
)
6037 struct hppa_fix_struct
*hppa_fix
;
6039 hppa_fix
= fixp
->tc_fix_data
;
6041 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6044 if (fixp
->fx_addsy
== 0
6045 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6051 /* Return nonzero if the fixup in FIXP will require a relocation,
6052 even it if appears that the fixup could be completely handled
6056 hppa_force_relocation (fixp
)
6059 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
6062 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6066 #define stub_needed(CALLER, CALLEE) \
6067 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6069 /* It is necessary to force PC-relative calls/jumps to have a relocation
6070 entry if they're going to need either a argument relocation or long
6071 call stub. FIXME. Can't we need the same for absolute calls? */
6072 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6073 && (stub_needed (((obj_symbol_type
*)
6074 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6075 hppa_fixp
->fx_arg_reloc
)))
6080 /* No need (yet) to force another relocations to be emitted. */
6084 /* Now for some ELF specific code. FIXME. */
6086 static symext_chainS
*symext_rootP
;
6087 static symext_chainS
*symext_lastP
;
6089 /* Mark the end of a function so that it's possible to compute
6090 the size of the function in hppa_elf_final_processing. */
6093 hppa_elf_mark_end_of_function ()
6095 /* ELF does not have EXIT relocations. All we do is create a
6096 temporary symbol marking the end of the function. */
6097 char *name
= (char *)
6098 xmalloc (strlen ("L$\001end_") +
6099 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6105 strcpy (name
, "L$\001end_");
6106 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6108 /* If we have a .exit followed by a .procend, then the
6109 symbol will have already been defined. */
6110 symbolP
= symbol_find (name
);
6113 /* The symbol has already been defined! This can
6114 happen if we have a .exit followed by a .procend.
6116 This is *not* an error. All we want to do is free
6117 the memory we just allocated for the name and continue. */
6122 /* symbol value should be the offset of the
6123 last instruction of the function */
6124 symbolP
= symbol_new (name
, now_seg
,
6125 (valueT
) (obstack_next_free (&frags
)
6126 - frag_now
->fr_literal
- 4),
6130 symbolP
->bsym
->flags
= BSF_LOCAL
;
6131 symbol_table_insert (symbolP
);
6135 last_call_info
->end_symbol
= symbolP
;
6137 as_bad ("Symbol '%s' could not be created.", name
);
6141 as_bad ("No memory for symbol name.");
6145 /* Do any symbol processing requested by the target-cpu or target-format. */
6148 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6150 elf_symbol_type
*symbolP
;
6153 symext_chainS
*symextP
;
6154 unsigned int arg_reloc
;
6156 /* Only functions can have argument relocations. */
6157 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6160 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6162 /* If there are no argument relocation bits, then no relocation is
6163 necessary. Do not add this to the symextn section. */
6167 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6169 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6170 symextP
[0].next
= &symextP
[1];
6172 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6173 symextP
[1].next
= NULL
;
6175 if (symext_rootP
== NULL
)
6177 symext_rootP
= &symextP
[0];
6178 symext_lastP
= &symextP
[1];
6182 symext_lastP
->next
= &symextP
[0];
6183 symext_lastP
= &symextP
[1];
6187 /* Make sections needed by the target cpu and/or target format. */
6189 hppa_tc_make_sections (abfd
)
6192 symext_chainS
*symextP
;
6193 segT save_seg
= now_seg
;
6194 subsegT save_subseg
= now_subseg
;
6196 /* Build the symbol extension section. */
6197 hppa_tc_make_symextn_section ();
6199 /* Force some calculation to occur. */
6200 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6202 hppa_elf_stub_finish (abfd
);
6204 /* If no symbols for the symbol extension section, then stop now. */
6205 if (symext_rootP
== NULL
)
6208 /* Switch to the symbol extension section. */
6209 subseg_new (SYMEXTN_SECTION_NAME
, 0);
6211 frag_wane (frag_now
);
6214 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6217 int *symtab_map
= elf_sym_extra (abfd
);
6220 /* First, patch the symbol extension record to reflect the true
6221 symbol table index. */
6223 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6225 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6226 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6230 ptr
= frag_more (sizeof (symextP
->entry
));
6231 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6234 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6235 frag_wane (frag_now
);
6237 /* Switch back to the original segment. */
6238 subseg_set (save_seg
, save_subseg
);
6241 /* Make the symbol extension section. */
6244 hppa_tc_make_symextn_section ()
6248 symext_chainS
*symextP
;
6252 segT save_seg
= now_seg
;
6253 subsegT save_subseg
= now_subseg
;
6255 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6258 size
= sizeof (symext_entryS
) * n
;
6260 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6262 bfd_set_section_flags (stdoutput
, symextn_sec
,
6263 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6264 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6266 /* Now, switch back to the original segment. */
6267 subseg_set (save_seg
, save_subseg
);
6271 /* Build the symbol extension section. */
6274 pa_build_symextn_section ()
6277 asection
*save_seg
= now_seg
;
6278 subsegT subseg
= (subsegT
) 0;
6279 subsegT save_subseg
= now_subseg
;
6281 seg
= subseg_new (".hppa_symextn", subseg
);
6282 bfd_set_section_flags (stdoutput
,
6284 SEC_HAS_CONTENTS
| SEC_READONLY
6285 | SEC_ALLOC
| SEC_LOAD
);
6287 subseg_set (save_seg
, save_subseg
);
6290 /* For ELF, this function serves one purpose: to setup the st_size
6291 field of STT_FUNC symbols. To do this, we need to scan the
6292 call_info structure list, determining st_size in by taking the
6293 difference in the address of the beginning/end marker symbols. */
6296 elf_hppa_final_processing ()
6298 struct call_info
*call_info_pointer
;
6300 for (call_info_pointer
= call_info_root
;
6302 call_info_pointer
= call_info_pointer
->ci_next
)
6304 elf_symbol_type
*esym
6305 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6306 esym
->internal_elf_sym
.st_size
=
6307 S_GET_VALUE (call_info_pointer
->end_symbol
)
6308 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;