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. */
426 /* The segment this fixup appears in. */
430 /* Structure to hold information about predefined registers. */
438 /* This structure defines the mapping from a FP condition string
439 to a condition number which can be recorded in an instruction. */
446 /* This structure defines a mapping from a field selector
447 string to a field selector type. */
448 struct selector_entry
454 /* Prototypes for functions local to tc-hppa.c. */
456 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
457 static void pa_cons
PARAMS ((int));
458 static void pa_data
PARAMS ((int));
459 static void pa_float_cons
PARAMS ((int));
460 static void pa_fill
PARAMS ((int));
461 static void pa_lcomm
PARAMS ((int));
462 static void pa_lsym
PARAMS ((int));
463 static void pa_stringer
PARAMS ((int));
464 static void pa_text
PARAMS ((int));
465 static void pa_version
PARAMS ((int));
466 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
467 static int get_expression
PARAMS ((char *));
468 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
469 static int evaluate_absolute
PARAMS ((struct pa_it
*));
470 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
471 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
472 static int pa_parse_nullif
PARAMS ((char **));
473 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
475 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
476 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
477 static void pa_block
PARAMS ((int));
478 static void pa_call
PARAMS ((int));
479 static void pa_call_args
PARAMS ((struct call_desc
*));
480 static void pa_callinfo
PARAMS ((int));
481 static void pa_code
PARAMS ((int));
482 static void pa_comm
PARAMS ((int));
483 static void pa_copyright
PARAMS ((int));
484 static void pa_end
PARAMS ((int));
485 static void pa_enter
PARAMS ((int));
486 static void pa_entry
PARAMS ((int));
487 static void pa_equ
PARAMS ((int));
488 static void pa_exit
PARAMS ((int));
489 static void pa_export
PARAMS ((int));
490 static void pa_type_args
PARAMS ((symbolS
*, int));
491 static void pa_import
PARAMS ((int));
492 static void pa_label
PARAMS ((int));
493 static void pa_leave
PARAMS ((int));
494 static void pa_origin
PARAMS ((int));
495 static void pa_proc
PARAMS ((int));
496 static void pa_procend
PARAMS ((int));
497 static void pa_space
PARAMS ((int));
498 static void pa_spnum
PARAMS ((int));
499 static void pa_subspace
PARAMS ((int));
500 static void pa_param
PARAMS ((int));
501 static void pa_undefine_label
PARAMS ((void));
502 static int need_89_opcode
PARAMS ((struct pa_it
*,
503 struct pa_89_fp_reg_struct
*));
504 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
505 static label_symbol_struct
*pa_get_label
PARAMS ((void));
506 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, char,
509 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
514 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
515 char *, char, char, char,
516 char, char, char, int,
519 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
520 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
521 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
522 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
524 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
525 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
526 static void pa_ip
PARAMS ((char *));
527 static void fix_new_hppa
PARAMS ((fragS
*, int, short int, symbolS
*,
528 long, expressionS
*, int,
529 bfd_reloc_code_real_type
,
530 enum hppa_reloc_field_selector_type
,
532 static int is_end_of_statement
PARAMS ((void));
533 static int reg_name_search
PARAMS ((char *));
534 static int pa_chk_field_selector
PARAMS ((char **));
535 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
536 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
537 static void process_exit
PARAMS ((void));
538 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
539 static int log2
PARAMS ((int));
540 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
541 static unsigned int pa_stringer_aux
PARAMS ((char *));
542 static void pa_spaces_begin
PARAMS ((void));
543 static void hppa_elf_mark_end_of_function
PARAMS ((void));
545 /* File and gloally scoped variable declarations. */
547 /* Root and final entry in the space chain. */
548 static sd_chain_struct
*space_dict_root
;
549 static sd_chain_struct
*space_dict_last
;
551 /* The current space and subspace. */
552 static sd_chain_struct
*current_space
;
553 static ssd_chain_struct
*current_subspace
;
555 /* Root of the call_info chain. */
556 static struct call_info
*call_info_root
;
558 /* The last call_info (for functions) structure
559 seen so it can be associated with fixups and
561 static struct call_info
*last_call_info
;
563 /* The last call description (for actual calls). */
564 static struct call_desc last_call_desc
;
566 /* Relaxation isn't supported for the PA yet. */
567 const relax_typeS md_relax_table
[] =
570 /* Jumps are always the same size -- one instruction. */
571 int md_short_jump_size
= 4;
572 int md_long_jump_size
= 4;
574 /* handle of the OPCODE hash table */
575 static struct hash_control
*op_hash
= NULL
;
577 /* This array holds the chars that always start a comment. If the
578 pre-processor is disabled, these aren't very useful. */
579 const char comment_chars
[] = ";";
581 /* Table of pseudo ops for the PA. FIXME -- how many of these
582 are now redundant with the overall GAS and the object file
584 const pseudo_typeS md_pseudo_table
[] =
586 /* align pseudo-ops on the PA specify the actual alignment requested,
587 not the log2 of the requested alignment. */
588 {"align", s_align_bytes
, 8},
589 {"ALIGN", s_align_bytes
, 8},
590 {"block", pa_block
, 1},
591 {"BLOCK", pa_block
, 1},
592 {"blockz", pa_block
, 0},
593 {"BLOCKZ", pa_block
, 0},
594 {"byte", pa_cons
, 1},
595 {"BYTE", pa_cons
, 1},
596 {"call", pa_call
, 0},
597 {"CALL", pa_call
, 0},
598 {"callinfo", pa_callinfo
, 0},
599 {"CALLINFO", pa_callinfo
, 0},
600 {"code", pa_code
, 0},
601 {"CODE", pa_code
, 0},
602 {"comm", pa_comm
, 0},
603 {"COMM", pa_comm
, 0},
604 {"copyright", pa_copyright
, 0},
605 {"COPYRIGHT", pa_copyright
, 0},
606 {"data", pa_data
, 0},
607 {"DATA", pa_data
, 0},
608 {"double", pa_float_cons
, 'd'},
609 {"DOUBLE", pa_float_cons
, 'd'},
612 {"enter", pa_enter
, 0},
613 {"ENTER", pa_enter
, 0},
614 {"entry", pa_entry
, 0},
615 {"ENTRY", pa_entry
, 0},
618 {"exit", pa_exit
, 0},
619 {"EXIT", pa_exit
, 0},
620 {"export", pa_export
, 0},
621 {"EXPORT", pa_export
, 0},
622 {"fill", pa_fill
, 0},
623 {"FILL", pa_fill
, 0},
624 {"float", pa_float_cons
, 'f'},
625 {"FLOAT", pa_float_cons
, 'f'},
626 {"half", pa_cons
, 2},
627 {"HALF", pa_cons
, 2},
628 {"import", pa_import
, 0},
629 {"IMPORT", pa_import
, 0},
632 {"label", pa_label
, 0},
633 {"LABEL", pa_label
, 0},
634 {"lcomm", pa_lcomm
, 0},
635 {"LCOMM", pa_lcomm
, 0},
636 {"leave", pa_leave
, 0},
637 {"LEAVE", pa_leave
, 0},
638 {"long", pa_cons
, 4},
639 {"LONG", pa_cons
, 4},
640 {"lsym", pa_lsym
, 0},
641 {"LSYM", pa_lsym
, 0},
642 {"octa", pa_cons
, 16},
643 {"OCTA", pa_cons
, 16},
644 {"org", pa_origin
, 0},
645 {"ORG", pa_origin
, 0},
646 {"origin", pa_origin
, 0},
647 {"ORIGIN", pa_origin
, 0},
648 {"param", pa_param
, 0},
649 {"PARAM", pa_param
, 0},
650 {"proc", pa_proc
, 0},
651 {"PROC", pa_proc
, 0},
652 {"procend", pa_procend
, 0},
653 {"PROCEND", pa_procend
, 0},
654 {"quad", pa_cons
, 8},
655 {"QUAD", pa_cons
, 8},
658 {"short", pa_cons
, 2},
659 {"SHORT", pa_cons
, 2},
660 {"single", pa_float_cons
, 'f'},
661 {"SINGLE", pa_float_cons
, 'f'},
662 {"space", pa_space
, 0},
663 {"SPACE", pa_space
, 0},
664 {"spnum", pa_spnum
, 0},
665 {"SPNUM", pa_spnum
, 0},
666 {"string", pa_stringer
, 0},
667 {"STRING", pa_stringer
, 0},
668 {"stringz", pa_stringer
, 1},
669 {"STRINGZ", pa_stringer
, 1},
670 {"subspa", pa_subspace
, 0},
671 {"SUBSPA", pa_subspace
, 0},
672 {"text", pa_text
, 0},
673 {"TEXT", pa_text
, 0},
674 {"version", pa_version
, 0},
675 {"VERSION", pa_version
, 0},
676 {"word", pa_cons
, 4},
677 {"WORD", pa_cons
, 4},
681 /* This array holds the chars that only start a comment at the beginning of
682 a line. If the line seems to have the form '# 123 filename'
683 .line and .file directives will appear in the pre-processed output.
685 Note that input_file.c hand checks for '#' at the beginning of the
686 first line of the input file. This is because the compiler outputs
687 #NO_APP at the beginning of its output.
689 Also note that '/*' will always start a comment. */
690 const char line_comment_chars
[] = "#";
692 /* This array holds the characters which act as line separators. */
693 const char line_separator_chars
[] = "!";
695 /* Chars that can be used to separate mant from exp in floating point nums. */
696 const char EXP_CHARS
[] = "eE";
698 /* Chars that mean this number is a floating point constant.
699 As in 0f12.456 or 0d1.2345e12.
701 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
702 changed in read.c. Ideally it shouldn't hae to know abou it at
703 all, but nothing is ideal around here. */
704 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
706 static struct pa_it the_insn
;
708 /* Points to the end of an expression just parsed by get_expressoin
709 and friends. FIXME. This shouldn't be handled with a file-global
711 static char *expr_end
;
713 /* Nonzero if a .callinfo appeared within the current procedure. */
714 static int callinfo_found
;
716 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
717 static int within_entry_exit
;
719 /* Nonzero if the assembler is currently within a procedure definition. */
720 static int within_procedure
;
722 /* Handle on strucutre which keep track of the last symbol
723 seen in each subspace. */
724 static label_symbol_struct
*label_symbols_rootp
= NULL
;
726 /* Holds the last field selector. */
727 static int hppa_field_selector
;
729 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
730 static symbolS
*dummy_symbol
;
732 /* Nonzero if errors are to be printed. */
733 static int print_errors
= 1;
735 /* List of registers that are pre-defined:
737 Each general register has one predefined name of the form
738 %r<REGNUM> which has the value <REGNUM>.
740 Space and control registers are handled in a similar manner,
741 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
743 Likewise for the floating point registers, but of the form
744 %fr<REGNUM>. Floating point registers have additional predefined
745 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
746 again have the value <REGNUM>.
748 Many registers also have synonyms:
750 %r26 - %r23 have %arg0 - %arg3 as synonyms
751 %r28 - %r29 have %ret0 - %ret1 as synonyms
752 %r30 has %sp as a synonym
753 %r27 has %dp as a synonym
754 %r2 has %rp as a synonym
756 Almost every control register has a synonym; they are not listed
759 The table is sorted. Suitable for searching by a binary search. */
761 static const struct pd_reg pre_defined_registers
[] =
961 /* This table is sorted by order of the length of the string. This is
962 so we check for <> before we check for <. If we had a <> and checked
963 for < first, we would get a false match. */
964 static const struct fp_cond_map fp_cond_map
[] =
1000 static const struct selector_entry selector_table
[] =
1019 /* default space and subspace dictionaries */
1021 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1022 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1024 /* pre-defined subsegments (subspaces) for the HPPA. */
1025 #define SUBSEG_CODE 0
1026 #define SUBSEG_DATA 0
1027 #define SUBSEG_LIT 1
1028 #define SUBSEG_BSS 2
1029 #define SUBSEG_UNWIND 3
1030 #define SUBSEG_GDB_STRINGS 0
1031 #define SUBSEG_GDB_SYMBOLS 1
1033 static struct default_subspace_dict pa_def_subspaces
[] =
1035 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1036 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1037 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1038 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1040 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".hppa_unwind", SUBSEG_UNWIND
},
1042 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1045 static struct default_space_dict pa_def_spaces
[] =
1047 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1048 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1049 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1052 /* Misc local definitions used by the assembler. */
1054 /* Return nonzero if the string pointed to by S potentially represents
1055 a right or left half of a FP register */
1056 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1057 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1059 /* These macros are used to maintain spaces/subspaces. */
1060 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1061 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1062 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1063 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1065 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1066 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1068 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1069 main loop after insertion. */
1071 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1073 ((OPCODE) |= (FIELD) << (START)); \
1077 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1078 IGNORE is used to suppress the error message. */
1080 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1082 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1085 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1091 #define is_DP_relative(exp) \
1092 ((exp).X_op == O_subtract \
1093 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1095 #define is_PC_relative(exp) \
1096 ((exp).X_op == O_subtract \
1097 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1099 #define is_complex(exp) \
1100 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1102 /* Actual functions to implement the PA specific code for the assembler. */
1104 /* Returns a pointer to the label_symbol_struct for the current space.
1105 or NULL if no label_symbol_struct exists for the current space. */
1107 static label_symbol_struct
*
1110 label_symbol_struct
*label_chain
;
1111 sd_chain_struct
*space_chain
= current_space
;
1113 for (label_chain
= label_symbols_rootp
;
1115 label_chain
= label_chain
->lss_next
)
1116 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1122 /* Defines a label for the current space. If one is already defined,
1123 this function will replace it with the new label. */
1126 pa_define_label (symbol
)
1129 label_symbol_struct
*label_chain
= pa_get_label ();
1130 sd_chain_struct
*space_chain
= current_space
;
1133 label_chain
->lss_label
= symbol
;
1136 /* Create a new label entry and add it to the head of the chain. */
1138 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1139 label_chain
->lss_label
= symbol
;
1140 label_chain
->lss_space
= space_chain
;
1141 label_chain
->lss_next
= NULL
;
1143 if (label_symbols_rootp
)
1144 label_chain
->lss_next
= label_symbols_rootp
;
1146 label_symbols_rootp
= label_chain
;
1150 /* Removes a label definition for the current space.
1151 If there is no label_symbol_struct entry, then no action is taken. */
1154 pa_undefine_label ()
1156 label_symbol_struct
*label_chain
;
1157 label_symbol_struct
*prev_label_chain
= NULL
;
1158 sd_chain_struct
*space_chain
= current_space
;
1160 for (label_chain
= label_symbols_rootp
;
1162 label_chain
= label_chain
->lss_next
)
1164 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1166 /* Remove the label from the chain and free its memory. */
1167 if (prev_label_chain
)
1168 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1170 label_symbols_rootp
= label_chain
->lss_next
;
1175 prev_label_chain
= label_chain
;
1180 /* An HPPA-specific version of fix_new. This is required because the HPPA
1181 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1182 results in the creation of an instance of an hppa_fix_struct. An
1183 hppa_fix_struct stores the extra information along with a pointer to the
1184 original fixS. This is attached to the original fixup via the
1185 tc_fix_data field. */
1188 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1189 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1193 symbolS
*add_symbol
;
1197 bfd_reloc_code_real_type r_type
;
1198 enum hppa_reloc_field_selector_type r_field
;
1205 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1206 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1209 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1211 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1212 new_fix
->tc_fix_data
= hppa_fix
;
1213 hppa_fix
->fx_r_type
= r_type
;
1214 hppa_fix
->fx_r_field
= r_field
;
1215 hppa_fix
->fx_r_format
= r_format
;
1216 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1217 hppa_fix
->segment
= now_seg
;
1220 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1222 /* If necessary call BFD backend function to attach the
1223 unwind bits to the target dependent parts of a BFD symbol.
1225 #ifdef obj_attach_unwind_info
1226 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1230 /* foo-$global$ is used to access non-automatic storage. $global$
1231 is really just a marker and has served its purpose, so eliminate
1232 it now so as not to confuse write.c. */
1233 if (new_fix
->fx_subsy
1234 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1235 new_fix
->fx_subsy
= NULL
;
1238 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1239 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1242 parse_cons_expression_hppa (exp
)
1245 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1249 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1250 hppa_field_selector is set by the parse_cons_expression_hppa. */
1253 cons_fix_new_hppa (frag
, where
, size
, exp
)
1259 unsigned int rel_type
;
1261 if (is_DP_relative (*exp
))
1262 rel_type
= R_HPPA_GOTOFF
;
1263 else if (is_complex (*exp
))
1264 rel_type
= R_HPPA_COMPLEX
;
1268 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1269 as_warn ("Invalid field selector. Assuming F%%.");
1271 fix_new_hppa (frag
, where
, size
,
1272 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1273 hppa_field_selector
, 32, 0, (char *) 0);
1275 /* Reset field selector to its default state. */
1276 hppa_field_selector
= 0;
1279 /* This function is called once, at assembler startup time. It should
1280 set up all the tables, etc. that the MD part of the assembler will need. */
1285 const char *retval
= NULL
;
1289 last_call_info
= NULL
;
1290 call_info_root
= NULL
;
1292 /* Folding of text and data segments fails miserably on the PA.
1293 Warn user and disable "-R" option. */
1296 as_warn ("-R option not supported on this target.");
1297 flag_readonly_data_in_text
= 0;
1303 op_hash
= hash_new ();
1305 while (i
< NUMOPCODES
)
1307 const char *name
= pa_opcodes
[i
].name
;
1308 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1309 if (retval
!= NULL
&& *retval
!= '\0')
1311 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1316 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1317 != pa_opcodes
[i
].match
)
1319 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1320 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1325 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1329 as_fatal ("Broken assembler. No assembly attempted.");
1331 /* SOM will change text_section. To make sure we never put
1332 anything into the old one switch to the new one now. */
1333 subseg_set (text_section
, 0);
1335 dummy_symbol
= symbol_find_or_make ("L$dummy");
1336 S_SET_SEGMENT (dummy_symbol
, text_section
);
1339 /* Assemble a single instruction storing it into a frag. */
1346 /* The had better be something to assemble. */
1349 /* If we are within a procedure definition, make sure we've
1350 defined a label for the procedure; handle case where the
1351 label was defined after the .PROC directive.
1353 Note there's not need to diddle with the segment or fragment
1354 for the label symbol in this case. We have already switched
1355 into the new $CODE$ subspace at this point. */
1356 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1358 label_symbol_struct
*label_symbol
= pa_get_label ();
1362 if (label_symbol
->lss_label
)
1364 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1365 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1367 /* Also handle allocation of a fixup to hold the unwind
1368 information when the label appears after the proc/procend. */
1369 if (within_entry_exit
)
1371 char *where
= frag_more (0);
1373 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1374 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
1375 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1376 (char *) &last_call_info
->ci_unwind
.descriptor
);
1381 as_bad ("Missing function name for .PROC (corrupted label chain)");
1384 as_bad ("Missing function name for .PROC");
1387 /* Assemble the instruction. Results are saved into "the_insn". */
1390 /* Get somewhere to put the assembled instrution. */
1393 /* Output the opcode. */
1394 md_number_to_chars (to
, the_insn
.opcode
, 4);
1396 /* If necessary output more stuff. */
1397 if (the_insn
.reloc
!= R_HPPA_NONE
)
1398 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1399 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1400 the_insn
.reloc
, the_insn
.field_selector
,
1401 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1404 /* Do the real work for assembling a single instruction. Store results
1405 into the global "the_insn" variable. */
1411 char *error_message
= "";
1412 char *s
, c
, *argstart
, *name
, *save_s
;
1416 int cmpltr
, nullif
, flag
, cond
, num
;
1417 unsigned long opcode
;
1418 struct pa_opcode
*insn
;
1420 /* Skip to something interesting. */
1421 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1440 as_bad ("Unknown opcode: `%s'", str
);
1446 /* Convert everything into lower case. */
1449 if (isupper (*save_s
))
1450 *save_s
= tolower (*save_s
);
1454 /* Look up the opcode in the has table. */
1455 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1457 as_bad ("Unknown opcode: `%s'", str
);
1466 /* Mark the location where arguments for the instruction start, then
1467 start processing them. */
1471 /* Do some initialization. */
1472 opcode
= insn
->match
;
1473 bzero (&the_insn
, sizeof (the_insn
));
1475 the_insn
.reloc
= R_HPPA_NONE
;
1477 /* Build the opcode, checking as we go to make
1478 sure that the operands match. */
1479 for (args
= insn
->args
;; ++args
)
1484 /* End of arguments. */
1500 /* These must match exactly. */
1509 /* Handle a 5 bit register or control register field at 10. */
1512 num
= pa_parse_number (&s
, 0);
1513 CHECK_FIELD (num
, 31, 0, 0);
1514 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1516 /* Handle a 5 bit register field at 15. */
1518 num
= pa_parse_number (&s
, 0);
1519 CHECK_FIELD (num
, 31, 0, 0);
1520 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1522 /* Handle a 5 bit register field at 31. */
1525 num
= pa_parse_number (&s
, 0);
1526 CHECK_FIELD (num
, 31, 0, 0);
1527 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1529 /* Handle a 5 bit field length at 31. */
1531 num
= pa_get_absolute_expression (&the_insn
, &s
);
1533 CHECK_FIELD (num
, 32, 1, 0);
1534 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1536 /* Handle a 5 bit immediate at 15. */
1538 num
= pa_get_absolute_expression (&the_insn
, &s
);
1540 CHECK_FIELD (num
, 15, -16, 0);
1541 low_sign_unext (num
, 5, &num
);
1542 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1544 /* Handle a 5 bit immediate at 31. */
1546 num
= pa_get_absolute_expression (&the_insn
, &s
);
1548 CHECK_FIELD (num
, 15, -16, 0)
1549 low_sign_unext (num
, 5, &num
);
1550 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1552 /* Handle an unsigned 5 bit immediate at 31. */
1554 num
= pa_get_absolute_expression (&the_insn
, &s
);
1556 CHECK_FIELD (num
, 31, 0, 0);
1557 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1559 /* Handle an unsigned 5 bit immediate at 15. */
1561 num
= pa_get_absolute_expression (&the_insn
, &s
);
1563 CHECK_FIELD (num
, 31, 0, 0);
1564 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1566 /* Handle a 2 bit space identifier at 17. */
1568 num
= pa_parse_number (&s
, 0);
1569 CHECK_FIELD (num
, 3, 0, 1);
1570 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1572 /* Handle a 3 bit space identifier at 18. */
1574 num
= pa_parse_number (&s
, 0);
1575 CHECK_FIELD (num
, 7, 0, 1);
1576 dis_assemble_3 (num
, &num
);
1577 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1579 /* Handle a completer for an indexing load or store. */
1585 while (*s
== ',' && i
< 2)
1588 if (strncasecmp (s
, "sm", 2) == 0)
1595 else if (strncasecmp (s
, "m", 1) == 0)
1597 else if (strncasecmp (s
, "s", 1) == 0)
1600 as_bad ("Invalid Indexed Load Completer.");
1605 as_bad ("Invalid Indexed Load Completer Syntax.");
1607 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1610 /* Handle a short load/store completer. */
1618 if (strncasecmp (s
, "ma", 2) == 0)
1623 else if (strncasecmp (s
, "mb", 2) == 0)
1629 as_bad ("Invalid Short Load/Store Completer.");
1633 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1636 /* Handle a stbys completer. */
1642 while (*s
== ',' && i
< 2)
1645 if (strncasecmp (s
, "m", 1) == 0)
1647 else if (strncasecmp (s
, "b", 1) == 0)
1649 else if (strncasecmp (s
, "e", 1) == 0)
1652 as_bad ("Invalid Store Bytes Short Completer");
1657 as_bad ("Invalid Store Bytes Short Completer");
1659 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1662 /* Handle a non-negated compare/stubtract condition. */
1664 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1667 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1670 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1672 /* Handle a negated or non-negated compare/subtract condition. */
1675 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1679 cmpltr
= pa_parse_neg_cmpsub_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 negated or non-negated add condition. */
1696 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1700 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1703 as_bad ("Invalid Compare/Subtract Condition");
1708 /* Negated condition requires an opcode change. */
1712 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1714 /* Handle a compare/subtract condition. */
1721 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1726 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1729 as_bad ("Invalid Compare/Subtract Condition");
1733 opcode
|= cmpltr
<< 13;
1734 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1736 /* Handle a non-negated add condition. */
1745 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1749 if (strcmp (name
, "=") == 0)
1751 else if (strcmp (name
, "<") == 0)
1753 else if (strcmp (name
, "<=") == 0)
1755 else if (strcasecmp (name
, "nuv") == 0)
1757 else if (strcasecmp (name
, "znv") == 0)
1759 else if (strcasecmp (name
, "sv") == 0)
1761 else if (strcasecmp (name
, "od") == 0)
1763 else if (strcasecmp (name
, "n") == 0)
1765 else if (strcasecmp (name
, "tr") == 0)
1770 else if (strcmp (name
, "<>") == 0)
1775 else if (strcmp (name
, ">=") == 0)
1780 else if (strcmp (name
, ">") == 0)
1785 else if (strcasecmp (name
, "uv") == 0)
1790 else if (strcasecmp (name
, "vnz") == 0)
1795 else if (strcasecmp (name
, "nsv") == 0)
1800 else if (strcasecmp (name
, "ev") == 0)
1806 as_bad ("Invalid Add Condition: %s", name
);
1809 nullif
= pa_parse_nullif (&s
);
1810 opcode
|= nullif
<< 1;
1811 opcode
|= cmpltr
<< 13;
1812 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1814 /* HANDLE a logical instruction condition. */
1822 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1826 if (strcmp (name
, "=") == 0)
1828 else if (strcmp (name
, "<") == 0)
1830 else if (strcmp (name
, "<=") == 0)
1832 else if (strcasecmp (name
, "od") == 0)
1834 else if (strcasecmp (name
, "tr") == 0)
1839 else if (strcmp (name
, "<>") == 0)
1844 else if (strcmp (name
, ">=") == 0)
1849 else if (strcmp (name
, ">") == 0)
1854 else if (strcasecmp (name
, "ev") == 0)
1860 as_bad ("Invalid Logical Instruction Condition.");
1863 opcode
|= cmpltr
<< 13;
1864 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1866 /* Handle a unit instruction condition. */
1873 if (strncasecmp (s
, "sbz", 3) == 0)
1878 else if (strncasecmp (s
, "shz", 3) == 0)
1883 else if (strncasecmp (s
, "sdc", 3) == 0)
1888 else if (strncasecmp (s
, "sbc", 3) == 0)
1893 else if (strncasecmp (s
, "shc", 3) == 0)
1898 else if (strncasecmp (s
, "tr", 2) == 0)
1904 else if (strncasecmp (s
, "nbz", 3) == 0)
1910 else if (strncasecmp (s
, "nhz", 3) == 0)
1916 else if (strncasecmp (s
, "ndc", 3) == 0)
1922 else if (strncasecmp (s
, "nbc", 3) == 0)
1928 else if (strncasecmp (s
, "nhc", 3) == 0)
1935 as_bad ("Invalid Logical Instruction Condition.");
1937 opcode
|= cmpltr
<< 13;
1938 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1940 /* Handle a shift/extract/deposit condition. */
1948 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1952 if (strcmp (name
, "=") == 0)
1954 else if (strcmp (name
, "<") == 0)
1956 else if (strcasecmp (name
, "od") == 0)
1958 else if (strcasecmp (name
, "tr") == 0)
1960 else if (strcmp (name
, "<>") == 0)
1962 else if (strcmp (name
, ">=") == 0)
1964 else if (strcasecmp (name
, "ev") == 0)
1966 /* Handle movb,n. Put things back the way they were.
1967 This includes moving s back to where it started. */
1968 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1975 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1978 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1980 /* Handle bvb and bb conditions. */
1986 if (strncmp (s
, "<", 1) == 0)
1991 else if (strncmp (s
, ">=", 2) == 0)
1997 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1999 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2001 /* Handle a system control completer. */
2003 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2011 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2013 /* Handle a nullification completer for branch instructions. */
2015 nullif
= pa_parse_nullif (&s
);
2016 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2018 /* Handle a 11 bit immediate at 31. */
2020 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2023 if (the_insn
.exp
.X_op
== O_constant
)
2025 num
= evaluate_absolute (&the_insn
);
2026 CHECK_FIELD (num
, 1023, -1024, 0);
2027 low_sign_unext (num
, 11, &num
);
2028 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2032 if (is_DP_relative (the_insn
.exp
))
2033 the_insn
.reloc
= R_HPPA_GOTOFF
;
2034 else if (is_PC_relative (the_insn
.exp
))
2035 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2036 else if (is_complex (the_insn
.exp
))
2037 the_insn
.reloc
= R_HPPA_COMPLEX
;
2039 the_insn
.reloc
= R_HPPA
;
2040 the_insn
.format
= 11;
2044 /* Handle a 14 bit immediate at 31. */
2046 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2049 if (the_insn
.exp
.X_op
== O_constant
)
2051 num
= evaluate_absolute (&the_insn
);
2052 CHECK_FIELD (num
, 8191, -8192, 0);
2053 low_sign_unext (num
, 14, &num
);
2054 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2058 if (is_DP_relative (the_insn
.exp
))
2059 the_insn
.reloc
= R_HPPA_GOTOFF
;
2060 else if (is_PC_relative (the_insn
.exp
))
2061 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2062 else if (is_complex (the_insn
.exp
))
2063 the_insn
.reloc
= R_HPPA_COMPLEX
;
2065 the_insn
.reloc
= R_HPPA
;
2066 the_insn
.format
= 14;
2070 /* Handle a 21 bit immediate at 31. */
2072 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2075 if (the_insn
.exp
.X_op
== O_constant
)
2077 num
= evaluate_absolute (&the_insn
);
2078 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2079 dis_assemble_21 (num
, &num
);
2080 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2084 if (is_DP_relative (the_insn
.exp
))
2085 the_insn
.reloc
= R_HPPA_GOTOFF
;
2086 else if (is_PC_relative (the_insn
.exp
))
2087 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2088 else if (is_complex (the_insn
.exp
))
2089 the_insn
.reloc
= R_HPPA_COMPLEX
;
2091 the_insn
.reloc
= R_HPPA
;
2092 the_insn
.format
= 21;
2096 /* Handle a 12 bit branch displacement. */
2098 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2102 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2104 unsigned int w1
, w
, result
;
2106 num
= evaluate_absolute (&the_insn
);
2109 as_bad ("Branch to unaligned address");
2112 CHECK_FIELD (num
, 8191, -8192, 0);
2113 sign_unext ((num
- 8) >> 2, 12, &result
);
2114 dis_assemble_12 (result
, &w1
, &w
);
2115 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2119 if (is_complex (the_insn
.exp
))
2120 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2122 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2123 the_insn
.format
= 12;
2124 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2125 bzero (&last_call_desc
, sizeof (struct call_desc
));
2130 /* Handle a 17 bit branch displacement. */
2132 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2136 if (!the_insn
.exp
.X_add_symbol
2137 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2140 unsigned int w2
, w1
, w
, result
;
2142 num
= evaluate_absolute (&the_insn
);
2145 as_bad ("Branch to unaligned address");
2148 CHECK_FIELD (num
, 262143, -262144, 0);
2150 if (the_insn
.exp
.X_add_symbol
)
2153 sign_unext (num
>> 2, 17, &result
);
2154 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2155 INSERT_FIELD_AND_CONTINUE (opcode
,
2156 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2160 if (is_complex (the_insn
.exp
))
2161 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2163 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2164 the_insn
.format
= 17;
2165 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2166 bzero (&last_call_desc
, sizeof (struct call_desc
));
2170 /* Handle an absolute 17 bit branch target. */
2172 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2176 if (!the_insn
.exp
.X_add_symbol
2177 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2180 unsigned int w2
, w1
, w
, result
;
2182 num
= evaluate_absolute (&the_insn
);
2185 as_bad ("Branch to unaligned address");
2188 CHECK_FIELD (num
, 262143, -262144, 0);
2190 if (the_insn
.exp
.X_add_symbol
)
2193 sign_unext (num
>> 2, 17, &result
);
2194 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2195 INSERT_FIELD_AND_CONTINUE (opcode
,
2196 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2200 if (is_complex (the_insn
.exp
))
2201 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2203 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2204 the_insn
.format
= 17;
2208 /* Handle a 5 bit shift count at 26. */
2210 num
= pa_get_absolute_expression (&the_insn
, &s
);
2212 CHECK_FIELD (num
, 31, 0, 0);
2213 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2215 /* Handle a 5 bit bit position at 26. */
2217 num
= pa_get_absolute_expression (&the_insn
, &s
);
2219 CHECK_FIELD (num
, 31, 0, 0);
2220 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2222 /* Handle a 5 bit immediate at 10. */
2224 num
= pa_get_absolute_expression (&the_insn
, &s
);
2226 CHECK_FIELD (num
, 31, 0, 0);
2227 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2229 /* Handle a 13 bit immediate at 18. */
2231 num
= pa_get_absolute_expression (&the_insn
, &s
);
2233 CHECK_FIELD (num
, 4095, -4096, 0);
2234 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2236 /* Handle a 26 bit immediate at 31. */
2238 num
= pa_get_absolute_expression (&the_insn
, &s
);
2240 CHECK_FIELD (num
, 671108864, 0, 0);
2241 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2243 /* Handle a 3 bit SFU identifier at 25. */
2245 num
= pa_get_absolute_expression (&the_insn
, &s
);
2247 CHECK_FIELD (num
, 7, 0, 0);
2248 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2250 /* We don't support any of these. FIXME. */
2257 /* Handle a source FP operand format completer. */
2259 flag
= pa_parse_fp_format (&s
);
2260 the_insn
.fpof1
= flag
;
2261 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2263 /* Handle a destination FP operand format completer. */
2265 /* pa_parse_format needs the ',' prefix. */
2267 flag
= pa_parse_fp_format (&s
);
2268 the_insn
.fpof2
= flag
;
2269 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2271 /* Handle FP compare conditions. */
2273 cond
= pa_parse_fp_cmp_cond (&s
);
2274 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2276 /* Handle L/R register halves like 't'. */
2279 struct pa_89_fp_reg_struct result
;
2281 pa_parse_number (&s
, &result
);
2282 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2283 opcode
|= result
.number_part
;
2285 /* 0x30 opcodes are FP arithmetic operation opcodes
2286 and need to be turned into 0x38 opcodes. This
2287 is not necessary for loads/stores. */
2288 if (need_89_opcode (&the_insn
, &result
)
2289 && ((opcode
& 0xfc000000) == 0x30000000))
2292 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2295 /* Handle L/R register halves like 'b'. */
2298 struct pa_89_fp_reg_struct result
;
2300 pa_parse_number (&s
, &result
);
2301 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2302 opcode
|= result
.number_part
<< 21;
2303 if (need_89_opcode (&the_insn
, &result
))
2305 opcode
|= (result
.l_r_select
& 1) << 7;
2311 /* Handle L/R register halves like 'x'. */
2314 struct pa_89_fp_reg_struct result
;
2316 pa_parse_number (&s
, &result
);
2317 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2318 opcode
|= (result
.number_part
& 0x1f) << 16;
2319 if (need_89_opcode (&the_insn
, &result
))
2321 opcode
|= (result
.l_r_select
& 1) << 12;
2327 /* Handle a 5 bit register field at 10. */
2330 struct pa_89_fp_reg_struct result
;
2332 pa_parse_number (&s
, &result
);
2333 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2334 if (the_insn
.fpof1
== SGL
)
2336 result
.number_part
&= 0xF;
2337 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2339 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2342 /* Handle a 5 bit register field at 15. */
2345 struct pa_89_fp_reg_struct result
;
2347 pa_parse_number (&s
, &result
);
2348 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2349 if (the_insn
.fpof1
== SGL
)
2351 result
.number_part
&= 0xF;
2352 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2354 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2357 /* Handle a 5 bit register field at 31. */
2360 struct pa_89_fp_reg_struct result
;
2362 pa_parse_number (&s
, &result
);
2363 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2364 if (the_insn
.fpof1
== SGL
)
2366 result
.number_part
&= 0xF;
2367 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2369 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2372 /* Handle a 5 bit register field at 20. */
2375 struct pa_89_fp_reg_struct result
;
2377 pa_parse_number (&s
, &result
);
2378 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2379 if (the_insn
.fpof1
== SGL
)
2381 result
.number_part
&= 0xF;
2382 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2384 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2387 /* Handle a 5 bit register field at 25. */
2390 struct pa_89_fp_reg_struct result
;
2392 pa_parse_number (&s
, &result
);
2393 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2394 if (the_insn
.fpof1
== SGL
)
2396 result
.number_part
&= 0xF;
2397 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2399 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2402 /* Handle a floating point operand format at 26.
2403 Only allows single and double precision. */
2405 flag
= pa_parse_fp_format (&s
);
2411 the_insn
.fpof1
= flag
;
2417 as_bad ("Invalid Floating Point Operand Format.");
2427 /* Check if the args matched. */
2430 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2431 && !strcmp (insn
->name
, insn
[1].name
))
2439 as_bad ("Invalid operands %s", error_message
);
2446 the_insn
.opcode
= opcode
;
2449 /* Turn a string in input_line_pointer into a floating point constant of type
2450 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2451 emitted is stored in *sizeP . An error message or NULL is returned. */
2453 #define MAX_LITTLENUMS 6
2456 md_atof (type
, litP
, sizeP
)
2462 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2463 LITTLENUM_TYPE
*wordP
;
2495 return "Bad call to MD_ATOF()";
2497 t
= atof_ieee (input_line_pointer
, type
, words
);
2499 input_line_pointer
= t
;
2500 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2501 for (wordP
= words
; prec
--;)
2503 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2504 litP
+= sizeof (LITTLENUM_TYPE
);
2509 /* Write out big-endian. */
2512 md_number_to_chars (buf
, val
, n
)
2517 number_to_chars_bigendian (buf
, val
, n
);
2520 /* Translate internal representation of relocation info to BFD target
2524 tc_gen_reloc (section
, fixp
)
2529 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2530 bfd_reloc_code_real_type code
;
2531 static int unwind_reloc_fixp_cnt
= 0;
2532 static arelent
*unwind_reloc_entryP
= NULL
;
2533 static arelent
*no_relocs
= NULL
;
2535 bfd_reloc_code_real_type
**codes
;
2539 if (fixp
->fx_addsy
== 0)
2541 assert (hppa_fixp
!= 0);
2542 assert (section
!= 0);
2545 /* Yuk. I would really like to push all this ELF specific unwind
2546 crud into BFD and the linker. That's how SOM does it -- and
2547 if we could make ELF emulate that then we could share more code
2548 in GAS (and potentially a gnu-linker later).
2550 Unwind section relocations are handled in a special way.
2551 The relocations for the .unwind section are originally
2552 built in the usual way. That is, for each unwind table
2553 entry there are two relocations: one for the beginning of
2554 the function and one for the end.
2556 The first time we enter this function we create a
2557 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2558 of the relocation is initialized to 0. Each additional
2559 pair of times this function is called for the unwind
2560 section represents an additional unwind table entry. Thus,
2561 the addend of the relocation should end up to be the number
2562 of unwind table entries. */
2563 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2565 if (unwind_reloc_entryP
== NULL
)
2567 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2569 assert (reloc
!= 0);
2570 unwind_reloc_entryP
= reloc
;
2571 unwind_reloc_fixp_cnt
++;
2572 unwind_reloc_entryP
->address
2573 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2574 /* A pointer to any function will do. We only
2575 need one to tell us what section the unwind
2576 relocations are for. */
2577 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2578 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2579 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2580 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2581 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2582 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2583 sizeof (arelent
*) * 2);
2584 assert (relocs
!= 0);
2585 relocs
[0] = unwind_reloc_entryP
;
2589 unwind_reloc_fixp_cnt
++;
2590 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2596 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2597 assert (reloc
!= 0);
2599 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2600 codes
= hppa_gen_reloc_type (stdoutput
,
2602 hppa_fixp
->fx_r_format
,
2603 hppa_fixp
->fx_r_field
);
2605 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2608 relocs
= (arelent
**)
2609 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2610 assert (relocs
!= 0);
2612 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2613 sizeof (arelent
) * n_relocs
);
2615 assert (reloc
!= 0);
2617 for (i
= 0; i
< n_relocs
; i
++)
2618 relocs
[i
] = &reloc
[i
];
2620 relocs
[n_relocs
] = NULL
;
2623 switch (fixp
->fx_r_type
)
2625 case R_HPPA_COMPLEX
:
2626 case R_HPPA_COMPLEX_PCREL_CALL
:
2627 case R_HPPA_COMPLEX_ABS_CALL
:
2628 assert (n_relocs
== 5);
2630 for (i
= 0; i
< n_relocs
; i
++)
2632 reloc
[i
].sym_ptr_ptr
= NULL
;
2633 reloc
[i
].address
= 0;
2634 reloc
[i
].addend
= 0;
2635 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2636 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2639 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2640 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2641 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2643 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2644 reloc
[3].addend
= fixp
->fx_addnumber
;
2645 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2646 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2647 reloc
[1].addend
= fixp
->fx_addnumber
;
2652 assert (n_relocs
== 1);
2656 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2657 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2658 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2659 reloc
->addend
= 0; /* default */
2661 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2663 /* Now, do any processing that is dependent on the relocation type. */
2666 case R_HPPA_PLABEL_32
:
2667 case R_HPPA_PLABEL_11
:
2668 case R_HPPA_PLABEL_14
:
2669 case R_HPPA_PLABEL_L21
:
2670 case R_HPPA_PLABEL_R11
:
2671 case R_HPPA_PLABEL_R14
:
2672 /* For plabel relocations, the addend of the
2673 relocation should be either 0 (no static link) or 2
2674 (static link required).
2676 FIXME: We always assume no static link! */
2680 case R_HPPA_ABS_CALL_11
:
2681 case R_HPPA_ABS_CALL_14
:
2682 case R_HPPA_ABS_CALL_17
:
2683 case R_HPPA_ABS_CALL_L21
:
2684 case R_HPPA_ABS_CALL_R11
:
2685 case R_HPPA_ABS_CALL_R14
:
2686 case R_HPPA_ABS_CALL_R17
:
2687 case R_HPPA_ABS_CALL_LS21
:
2688 case R_HPPA_ABS_CALL_RS11
:
2689 case R_HPPA_ABS_CALL_RS14
:
2690 case R_HPPA_ABS_CALL_RS17
:
2691 case R_HPPA_ABS_CALL_LD21
:
2692 case R_HPPA_ABS_CALL_RD11
:
2693 case R_HPPA_ABS_CALL_RD14
:
2694 case R_HPPA_ABS_CALL_RD17
:
2695 case R_HPPA_ABS_CALL_LR21
:
2696 case R_HPPA_ABS_CALL_RR14
:
2697 case R_HPPA_ABS_CALL_RR17
:
2699 case R_HPPA_PCREL_CALL_11
:
2700 case R_HPPA_PCREL_CALL_14
:
2701 case R_HPPA_PCREL_CALL_17
:
2702 case R_HPPA_PCREL_CALL_L21
:
2703 case R_HPPA_PCREL_CALL_R11
:
2704 case R_HPPA_PCREL_CALL_R14
:
2705 case R_HPPA_PCREL_CALL_R17
:
2706 case R_HPPA_PCREL_CALL_LS21
:
2707 case R_HPPA_PCREL_CALL_RS11
:
2708 case R_HPPA_PCREL_CALL_RS14
:
2709 case R_HPPA_PCREL_CALL_RS17
:
2710 case R_HPPA_PCREL_CALL_LD21
:
2711 case R_HPPA_PCREL_CALL_RD11
:
2712 case R_HPPA_PCREL_CALL_RD14
:
2713 case R_HPPA_PCREL_CALL_RD17
:
2714 case R_HPPA_PCREL_CALL_LR21
:
2715 case R_HPPA_PCREL_CALL_RR14
:
2716 case R_HPPA_PCREL_CALL_RR17
:
2717 /* The constant is stored in the instruction. */
2718 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2721 reloc
->addend
= fixp
->fx_addnumber
;
2728 /* Walk over reach relocation returned by the BFD backend. */
2729 for (i
= 0; i
< n_relocs
; i
++)
2733 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2734 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2735 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2741 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2746 /* For plabel relocations, the addend of the
2747 relocation should be either 0 (no static link) or 2
2748 (static link required).
2750 FIXME: We always assume no static link! */
2751 relocs
[i
]->addend
= 0;
2762 /* There is no symbol or addend associated with these fixups. */
2763 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2764 relocs
[i
]->addend
= 0;
2768 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2777 /* Process any machine dependent frag types. */
2780 md_convert_frag (abfd
, sec
, fragP
)
2782 register asection
*sec
;
2783 register fragS
*fragP
;
2785 unsigned int address
;
2787 if (fragP
->fr_type
== rs_machine_dependent
)
2789 switch ((int) fragP
->fr_subtype
)
2792 fragP
->fr_type
= rs_fill
;
2793 know (fragP
->fr_var
== 1);
2794 know (fragP
->fr_next
);
2795 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2796 if (address
% fragP
->fr_offset
)
2799 fragP
->fr_next
->fr_address
2804 fragP
->fr_offset
= 0;
2810 /* Round up a section size to the appropriate boundary. */
2813 md_section_align (segment
, size
)
2817 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2818 int align2
= (1 << align
) - 1;
2820 return (size
+ align2
) & ~align2
;
2823 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2825 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2827 addressT from_addr
, to_addr
;
2831 fprintf (stderr
, "pa_create_short_jmp\n");
2835 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2837 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2839 addressT from_addr
, to_addr
;
2843 fprintf (stderr
, "pa_create_long_jump\n");
2847 /* Return the approximate size of a frag before relaxation has occurred. */
2849 md_estimate_size_before_relax (fragP
, segment
)
2850 register fragS
*fragP
;
2857 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2863 /* Parse machine dependent options. There are none on the PA. */
2865 md_parse_option (argP
, cntP
, vecP
)
2873 /* We have no need to default values of symbols. */
2876 md_undefined_symbol (name
)
2882 /* Parse an operand that is machine-specific.
2883 We just return without modifying the expression as we have nothing
2887 md_operand (expressionP
)
2888 expressionS
*expressionP
;
2892 /* Apply a fixup to an instruction. */
2895 md_apply_fix (fixP
, valp
)
2899 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2900 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
2901 long new_val
, result
;
2902 unsigned int w1
, w2
, w
;
2905 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2906 never be "applied" (they are just markers). */
2908 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2909 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2913 /* There should have been an HPPA specific fixup associated
2914 with the GAS fixup. */
2917 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2918 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2920 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2923 /* Remember this value for emit_reloc. FIXME, is this braindamage
2924 documented anywhere!?! */
2925 fixP
->fx_addnumber
= val
;
2927 /* Check if this is an undefined symbol. No relocation can
2928 possibly be performed in this case.
2930 Also avoid doing anything for pc-relative fixups in which the
2931 fixup is in a different space than the symbol it references. */
2932 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2934 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
)
2937 && S_GET_SEGMENT (fixP
->fx_addsy
) != hppa_fixP
->segment
)
2940 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2943 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
2944 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
2945 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
2946 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
2947 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
2948 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
2949 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
)
2950 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
2956 /* Handle all opcodes with the 'j' operand type. */
2958 CHECK_FIELD (new_val
, 8191, -8192, 0);
2960 /* Mask off 14 bits to be changed. */
2961 bfd_put_32 (stdoutput
,
2962 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2964 low_sign_unext (new_val
, 14, &result
);
2967 /* Handle all opcodes with the 'k' operand type. */
2969 CHECK_FIELD (new_val
, 2097152, 0, 0);
2971 /* Mask off 21 bits to be changed. */
2972 bfd_put_32 (stdoutput
,
2973 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2975 dis_assemble_21 (new_val
, &result
);
2978 /* Handle all the opcodes with the 'i' operand type. */
2980 CHECK_FIELD (new_val
, 1023, -1023, 0);
2982 /* Mask off 11 bits to be changed. */
2983 bfd_put_32 (stdoutput
,
2984 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2986 low_sign_unext (new_val
, 11, &result
);
2989 /* Handle all the opcodes with the 'w' operand type. */
2991 CHECK_FIELD (new_val
, 8191, -8192, 0)
2993 /* Mask off 11 bits to be changed. */
2994 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2995 bfd_put_32 (stdoutput
,
2996 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2999 dis_assemble_12 (result
, &w1
, &w
);
3000 result
= ((w1
<< 2) | w
);
3003 /* Handle some of the opcodes with the 'W' operand type. */
3006 #define stub_needed(CALLER, CALLEE) \
3007 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3008 /* It is necessary to force PC-relative calls/jumps to have a
3009 relocation entry if they're going to need either a argument
3010 relocation or long call stub. FIXME. Can't we need the same
3011 for absolute calls? */
3013 && (stub_needed (((obj_symbol_type
*)
3014 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3015 hppa_fixP
->fx_arg_reloc
)))
3019 CHECK_FIELD (new_val
, 262143, -262144, 0);
3021 /* Mask off 17 bits to be changed. */
3022 bfd_put_32 (stdoutput
,
3023 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3025 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3026 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3027 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3032 /* These are ELF specific relocations. ELF unfortunately
3033 handles unwinds in a completely different manner. */
3034 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3035 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3036 result
= fixP
->fx_addnumber
;
3041 fixP
->fx_addnumber
= fixP
->fx_offset
;
3042 /* If we have a real relocation, then we want zero to
3043 be stored in the object file. If no relocation is going
3044 to be emitted, then we need to store new_val into the
3047 bfd_put_32 (stdoutput
, 0, buf
);
3049 bfd_put_32 (stdoutput
, new_val
, buf
);
3058 as_bad ("Unknown relocation encountered in md_apply_fix.");
3062 /* Insert the relocation. */
3063 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3068 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3069 (unsigned int) fixP
, fixP
->fx_r_type
);
3074 /* Exactly what point is a PC-relative offset relative TO?
3075 On the PA, they're relative to the address of the offset. */
3078 md_pcrel_from (fixP
)
3081 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3084 /* Return nonzero if the input line pointer is at the end of
3088 is_end_of_statement ()
3090 return ((*input_line_pointer
== '\n')
3091 || (*input_line_pointer
== ';')
3092 || (*input_line_pointer
== '!'));
3095 /* Read a number from S. The number might come in one of many forms,
3096 the most common will be a hex or decimal constant, but it could be
3097 a pre-defined register (Yuk!), or an absolute symbol.
3099 Return a number or -1 for failure.
3101 When parsing PA-89 FP register numbers RESULT will be
3102 the address of a structure to return information about
3103 L/R half of FP registers, store results there as appropriate.
3105 pa_parse_number can not handle negative constants and will fail
3106 horribly if it is passed such a constant. */
3109 pa_parse_number (s
, result
)
3111 struct pa_89_fp_reg_struct
*result
;
3120 /* Skip whitespace before the number. */
3121 while (*p
== ' ' || *p
== '\t')
3124 /* Store info in RESULT if requested by caller. */
3127 result
->number_part
= -1;
3128 result
->l_r_select
= -1;
3134 /* Looks like a number. */
3137 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3139 /* The number is specified in hex. */
3141 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3142 || ((*p
>= 'A') && (*p
<= 'F')))
3145 num
= num
* 16 + *p
- '0';
3146 else if (*p
>= 'a' && *p
<= 'f')
3147 num
= num
* 16 + *p
- 'a' + 10;
3149 num
= num
* 16 + *p
- 'A' + 10;
3155 /* The number is specified in decimal. */
3156 while (isdigit (*p
))
3158 num
= num
* 10 + *p
- '0';
3163 /* Store info in RESULT if requested by the caller. */
3166 result
->number_part
= num
;
3168 if (IS_R_SELECT (p
))
3170 result
->l_r_select
= 1;
3173 else if (IS_L_SELECT (p
))
3175 result
->l_r_select
= 0;
3179 result
->l_r_select
= 0;
3184 /* The number might be a predefined register. */
3189 /* Tege hack: Special case for general registers as the general
3190 code makes a binary search with case translation, and is VERY
3195 if (*p
== 'e' && *(p
+ 1) == 't'
3196 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3199 num
= *p
- '0' + 28;
3207 else if (!isdigit (*p
))
3210 as_bad ("Undefined register: '%s'.", name
);
3216 num
= num
* 10 + *p
++ - '0';
3217 while (isdigit (*p
));
3222 /* Do a normal register search. */
3223 while (is_part_of_name (c
))
3229 status
= reg_name_search (name
);
3235 as_bad ("Undefined register: '%s'.", name
);
3241 /* Store info in RESULT if requested by caller. */
3244 result
->number_part
= num
;
3245 if (IS_R_SELECT (p
- 1))
3246 result
->l_r_select
= 1;
3247 else if (IS_L_SELECT (p
- 1))
3248 result
->l_r_select
= 0;
3250 result
->l_r_select
= 0;
3255 /* And finally, it could be a symbol in the absolute section which
3256 is effectively a constant. */
3260 while (is_part_of_name (c
))
3266 if ((sym
= symbol_find (name
)) != NULL
)
3268 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3269 num
= S_GET_VALUE (sym
);
3273 as_bad ("Non-absolute symbol: '%s'.", name
);
3279 /* There is where we'd come for an undefined symbol
3280 or for an empty string. For an empty string we
3281 will return zero. That's a concession made for
3282 compatability with the braindamaged HP assemblers. */
3288 as_bad ("Undefined absolute constant: '%s'.", name
);
3294 /* Store info in RESULT if requested by caller. */
3297 result
->number_part
= num
;
3298 if (IS_R_SELECT (p
- 1))
3299 result
->l_r_select
= 1;
3300 else if (IS_L_SELECT (p
- 1))
3301 result
->l_r_select
= 0;
3303 result
->l_r_select
= 0;
3311 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3313 /* Given NAME, find the register number associated with that name, return
3314 the integer value associated with the given name or -1 on failure. */
3317 reg_name_search (name
)
3320 int middle
, low
, high
;
3324 high
= REG_NAME_CNT
- 1;
3328 middle
= (low
+ high
) / 2;
3329 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3335 return pre_defined_registers
[middle
].value
;
3337 while (low
<= high
);
3343 /* Return nonzero if the given INSN and L/R information will require
3344 a new PA-89 opcode. */
3347 need_89_opcode (insn
, result
)
3349 struct pa_89_fp_reg_struct
*result
;
3351 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3357 /* Parse a condition for a fcmp instruction. Return the numerical
3358 code associated with the condition. */
3361 pa_parse_fp_cmp_cond (s
)
3368 for (i
= 0; i
< 32; i
++)
3370 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3371 strlen (fp_cond_map
[i
].string
)) == 0)
3373 cond
= fp_cond_map
[i
].cond
;
3374 *s
+= strlen (fp_cond_map
[i
].string
);
3375 while (**s
== ' ' || **s
== '\t')
3381 as_bad ("Invalid FP Compare Condition: %c", **s
);
3385 /* Parse an FP operand format completer returning the completer
3388 static fp_operand_format
3389 pa_parse_fp_format (s
)
3398 if (strncasecmp (*s
, "sgl", 3) == 0)
3403 else if (strncasecmp (*s
, "dbl", 3) == 0)
3408 else if (strncasecmp (*s
, "quad", 4) == 0)
3415 format
= ILLEGAL_FMT
;
3416 as_bad ("Invalid FP Operand Format: %3s", *s
);
3423 /* Convert from a selector string into a selector type. */
3426 pa_chk_field_selector (str
)
3429 int middle
, low
, high
;
3433 /* Read past any whitespace. */
3434 /* FIXME: should we read past newlines and formfeeds??? */
3435 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3438 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3439 name
[0] = tolower ((*str
)[0]),
3441 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3442 name
[0] = tolower ((*str
)[0]),
3443 name
[1] = tolower ((*str
)[1]),
3449 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3453 middle
= (low
+ high
) / 2;
3454 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3461 *str
+= strlen (name
) + 1;
3462 return selector_table
[middle
].field_selector
;
3465 while (low
<= high
);
3470 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3473 get_expression (str
)
3479 save_in
= input_line_pointer
;
3480 input_line_pointer
= str
;
3481 seg
= expression (&the_insn
.exp
);
3482 if (!(seg
== absolute_section
3483 || seg
== undefined_section
3484 || SEG_NORMAL (seg
)))
3486 as_warn ("Bad segment in expression.");
3487 expr_end
= input_line_pointer
;
3488 input_line_pointer
= save_in
;
3491 expr_end
= input_line_pointer
;
3492 input_line_pointer
= save_in
;
3496 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3498 pa_get_absolute_expression (insn
, strp
)
3504 insn
->field_selector
= pa_chk_field_selector (strp
);
3505 save_in
= input_line_pointer
;
3506 input_line_pointer
= *strp
;
3507 expression (&insn
->exp
);
3508 if (insn
->exp
.X_op
!= O_constant
)
3510 as_bad ("Bad segment (should be absolute).");
3511 expr_end
= input_line_pointer
;
3512 input_line_pointer
= save_in
;
3515 expr_end
= input_line_pointer
;
3516 input_line_pointer
= save_in
;
3517 return evaluate_absolute (insn
);
3520 /* Evaluate an absolute expression EXP which may be modified by
3521 the selector FIELD_SELECTOR. Return the value of the expression. */
3523 evaluate_absolute (insn
)
3528 int field_selector
= insn
->field_selector
;
3531 value
= exp
.X_add_number
;
3533 switch (field_selector
)
3539 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3541 if (value
& 0x00000400)
3543 value
= (value
& 0xfffff800) >> 11;
3546 /* Sign extend from bit 21. */
3548 if (value
& 0x00000400)
3549 value
|= 0xfffff800;
3554 /* Arithmetic shift right 11 bits. */
3556 value
= (value
& 0xfffff800) >> 11;
3559 /* Set bits 0-20 to zero. */
3561 value
= value
& 0x7ff;
3564 /* Add 0x800 and arithmetic shift right 11 bits. */
3567 value
= (value
& 0xfffff800) >> 11;
3570 /* Set bitgs 0-21 to one. */
3572 value
|= 0xfffff800;
3575 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3577 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3581 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3586 BAD_CASE (field_selector
);
3592 /* Given an argument location specification return the associated
3593 argument location number. */
3596 pa_build_arg_reloc (type_name
)
3600 if (strncasecmp (type_name
, "no", 2) == 0)
3602 if (strncasecmp (type_name
, "gr", 2) == 0)
3604 else if (strncasecmp (type_name
, "fr", 2) == 0)
3606 else if (strncasecmp (type_name
, "fu", 2) == 0)
3609 as_bad ("Invalid argument location: %s\n", type_name
);
3614 /* Encode and return an argument relocation specification for
3615 the given register in the location specified by arg_reloc. */
3618 pa_align_arg_reloc (reg
, arg_reloc
)
3620 unsigned int arg_reloc
;
3622 unsigned int new_reloc
;
3624 new_reloc
= arg_reloc
;
3640 as_bad ("Invalid argument description: %d", reg
);
3646 /* Parse a PA nullification completer (,n). Return nonzero if the
3647 completer was found; return zero if no completer was found. */
3659 if (strncasecmp (*s
, "n", 1) == 0)
3663 as_bad ("Invalid Nullification: (%c)", **s
);
3672 /* Parse a non-negated compare/subtract completer returning the
3673 number (for encoding in instrutions) of the given completer.
3675 ISBRANCH specifies whether or not this is parsing a condition
3676 completer for a branch (vs a nullification completer for a
3677 computational instruction. */
3680 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3685 char *name
= *s
+ 1;
3693 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3697 if (strcmp (name
, "=") == 0)
3701 else if (strcmp (name
, "<") == 0)
3705 else if (strcmp (name
, "<=") == 0)
3709 else if (strcmp (name
, "<<") == 0)
3713 else if (strcmp (name
, "<<=") == 0)
3717 else if (strcasecmp (name
, "sv") == 0)
3721 else if (strcasecmp (name
, "od") == 0)
3725 /* If we have something like addb,n then there is no condition
3727 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3738 /* Reset pointers if this was really a ,n for a branch instruction. */
3739 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3745 /* Parse a negated compare/subtract completer returning the
3746 number (for encoding in instrutions) of the given completer.
3748 ISBRANCH specifies whether or not this is parsing a condition
3749 completer for a branch (vs a nullification completer for a
3750 computational instruction. */
3753 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3758 char *name
= *s
+ 1;
3766 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3770 if (strcasecmp (name
, "tr") == 0)
3774 else if (strcmp (name
, "<>") == 0)
3778 else if (strcmp (name
, ">=") == 0)
3782 else if (strcmp (name
, ">") == 0)
3786 else if (strcmp (name
, ">>=") == 0)
3790 else if (strcmp (name
, ">>") == 0)
3794 else if (strcasecmp (name
, "nsv") == 0)
3798 else if (strcasecmp (name
, "ev") == 0)
3802 /* If we have something like addb,n then there is no condition
3804 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3815 /* Reset pointers if this was really a ,n for a branch instruction. */
3816 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3822 /* Parse a non-negated addition completer returning the number
3823 (for encoding in instrutions) of the given completer.
3825 ISBRANCH specifies whether or not this is parsing a condition
3826 completer for a branch (vs a nullification completer for a
3827 computational instruction. */
3830 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3835 char *name
= *s
+ 1;
3843 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3847 if (strcmp (name
, "=") == 0)
3851 else if (strcmp (name
, "<") == 0)
3855 else if (strcmp (name
, "<=") == 0)
3859 else if (strcasecmp (name
, "nuv") == 0)
3863 else if (strcasecmp (name
, "znv") == 0)
3867 else if (strcasecmp (name
, "sv") == 0)
3871 else if (strcasecmp (name
, "od") == 0)
3875 /* If we have something like addb,n then there is no condition
3877 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3888 /* Reset pointers if this was really a ,n for a branch instruction. */
3889 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3895 /* Parse a negated addition completer returning the number
3896 (for encoding in instrutions) of the given completer.
3898 ISBRANCH specifies whether or not this is parsing a condition
3899 completer for a branch (vs a nullification completer for a
3900 computational instruction. */
3903 pa_parse_neg_add_cmpltr (s
, isbranch
)
3908 char *name
= *s
+ 1;
3916 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3920 if (strcasecmp (name
, "tr") == 0)
3924 else if (strcmp (name
, "<>") == 0)
3928 else if (strcmp (name
, ">=") == 0)
3932 else if (strcmp (name
, ">") == 0)
3936 else if (strcasecmp (name
, "uv") == 0)
3940 else if (strcasecmp (name
, "vnz") == 0)
3944 else if (strcasecmp (name
, "nsv") == 0)
3948 else if (strcasecmp (name
, "ev") == 0)
3952 /* If we have something like addb,n then there is no condition
3954 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3965 /* Reset pointers if this was really a ,n for a branch instruction. */
3966 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3972 /* Handle a .BLOCK type pseudo-op. */
3980 unsigned int temp_size
;
3983 temp_size
= get_absolute_expression ();
3985 /* Always fill with zeros, that's what the HP assembler does. */
3988 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3989 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3990 bzero (p
, temp_size
);
3992 /* Convert 2 bytes at a time. */
3994 for (i
= 0; i
< temp_size
; i
+= 2)
3996 md_number_to_chars (p
+ i
,
3998 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4001 pa_undefine_label ();
4002 demand_empty_rest_of_line ();
4005 /* Handle a .CALL pseudo-op. This involves storing away information
4006 about where arguments are to be found so the linker can detect
4007 (and correct) argument location mismatches between caller and callee. */
4013 pa_call_args (&last_call_desc
);
4014 demand_empty_rest_of_line ();
4017 /* Do the dirty work of building a call descriptor which describes
4018 where the caller placed arguments to a function call. */
4021 pa_call_args (call_desc
)
4022 struct call_desc
*call_desc
;
4025 unsigned int temp
, arg_reloc
;
4027 while (!is_end_of_statement ())
4029 name
= input_line_pointer
;
4030 c
= get_symbol_end ();
4031 /* Process a source argument. */
4032 if ((strncasecmp (name
, "argw", 4) == 0))
4034 temp
= atoi (name
+ 4);
4035 p
= input_line_pointer
;
4037 input_line_pointer
++;
4038 name
= input_line_pointer
;
4039 c
= get_symbol_end ();
4040 arg_reloc
= pa_build_arg_reloc (name
);
4041 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4043 /* Process a return value. */
4044 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4046 p
= input_line_pointer
;
4048 input_line_pointer
++;
4049 name
= input_line_pointer
;
4050 c
= get_symbol_end ();
4051 arg_reloc
= pa_build_arg_reloc (name
);
4052 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4056 as_bad ("Invalid .CALL argument: %s", name
);
4058 p
= input_line_pointer
;
4060 if (!is_end_of_statement ())
4061 input_line_pointer
++;
4065 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4068 is_same_frag (frag1
, frag2
)
4075 else if (frag2
== NULL
)
4077 else if (frag1
== frag2
)
4079 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4080 return (is_same_frag (frag1
, frag2
->fr_next
));
4086 /* Build an entry in the UNWIND subspace from the given function
4087 attributes in CALL_INFO. This is not needed for SOM as using
4088 R_ENTRY and R_EXIT relocations allow the linker to handle building
4089 of the unwind spaces. */
4092 pa_build_unwind_subspace (call_info
)
4093 struct call_info
*call_info
;
4096 asection
*seg
, *save_seg
;
4097 subsegT subseg
, save_subseg
;
4101 /* Get into the right seg/subseg. This may involve creating
4102 the seg the first time through. Make sure to have the
4103 old seg/subseg so that we can reset things when we are done. */
4104 subseg
= SUBSEG_UNWIND
;
4105 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4106 if (seg
== ASEC_NULL
)
4108 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4109 bfd_set_section_flags (stdoutput
, seg
,
4110 SEC_READONLY
| SEC_HAS_CONTENTS
4111 | SEC_LOAD
| SEC_RELOC
);
4115 save_subseg
= now_subseg
;
4116 subseg_set (seg
, subseg
);
4119 /* Get some space to hold relocation information for the unwind
4123 /* Relocation info. for start offset of the function. */
4124 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4125 call_info
->start_symbol
, (offsetT
) 0,
4126 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4131 /* Relocation info. for end offset of the function. */
4132 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4133 call_info
->end_symbol
, (offsetT
) 0,
4134 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4138 unwind
= (char *) &call_info
->ci_unwind
;
4139 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4143 FRAG_APPEND_1_CHAR (c
);
4147 /* Return back to the original segment/subsegment. */
4148 subseg_set (save_seg
, save_subseg
);
4152 /* Process a .CALLINFO pseudo-op. This information is used later
4153 to build unwind descriptors and maybe one day to support
4154 .ENTER and .LEAVE. */
4157 pa_callinfo (unused
)
4163 /* .CALLINFO must appear within a procedure definition. */
4164 if (!within_procedure
)
4165 as_bad (".callinfo is not within a procedure definition");
4167 /* Mark the fact that we found the .CALLINFO for the
4168 current procedure. */
4169 callinfo_found
= TRUE
;
4171 /* Iterate over the .CALLINFO arguments. */
4172 while (!is_end_of_statement ())
4174 name
= input_line_pointer
;
4175 c
= get_symbol_end ();
4176 /* Frame size specification. */
4177 if ((strncasecmp (name
, "frame", 5) == 0))
4179 p
= input_line_pointer
;
4181 input_line_pointer
++;
4182 temp
= get_absolute_expression ();
4183 if ((temp
& 0x3) != 0)
4185 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4189 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4190 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4193 /* Entry register (GR, GR and SR) specifications. */
4194 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4196 p
= input_line_pointer
;
4198 input_line_pointer
++;
4199 temp
= get_absolute_expression ();
4200 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4201 even though %r19 is caller saved. I think this is a bug in
4202 the HP assembler, and we are not going to emulate it. */
4203 if (temp
< 3 || temp
> 18)
4204 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4205 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4207 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4209 p
= input_line_pointer
;
4211 input_line_pointer
++;
4212 temp
= get_absolute_expression ();
4213 /* Similarly the HP assembler takes 31 as the high bound even
4214 though %fr21 is the last callee saved floating point register. */
4215 if (temp
< 12 || temp
> 21)
4216 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4217 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4219 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4221 p
= input_line_pointer
;
4223 input_line_pointer
++;
4224 temp
= get_absolute_expression ();
4226 as_bad ("Value for ENTRY_SR must be 3\n");
4228 /* Note whether or not this function performs any calls. */
4229 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4230 (strncasecmp (name
, "caller", 6) == 0))
4232 p
= input_line_pointer
;
4235 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4237 p
= input_line_pointer
;
4240 /* Should RP be saved into the stack. */
4241 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4243 p
= input_line_pointer
;
4245 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4247 /* Likewise for SP. */
4248 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4250 p
= input_line_pointer
;
4252 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4254 /* Is this an unwindable procedure. If so mark it so
4255 in the unwind descriptor. */
4256 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4258 p
= input_line_pointer
;
4260 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4262 /* Is this an interrupt routine. If so mark it in the
4263 unwind descriptor. */
4264 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4266 p
= input_line_pointer
;
4268 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4272 as_bad ("Invalid .CALLINFO argument: %s", name
);
4274 if (!is_end_of_statement ())
4275 input_line_pointer
++;
4278 demand_empty_rest_of_line ();
4281 /* Switch into the code subspace. */
4287 sd_chain_struct
*sdchain
;
4289 /* First time through it might be necessary to create the
4291 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4293 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4294 pa_def_spaces
[0].spnum
,
4295 pa_def_spaces
[0].loadable
,
4296 pa_def_spaces
[0].defined
,
4297 pa_def_spaces
[0].private,
4298 pa_def_spaces
[0].sort
,
4299 pa_def_spaces
[0].segment
, 0);
4302 SPACE_DEFINED (sdchain
) = 1;
4303 subseg_set (text_section
, SUBSEG_CODE
);
4304 demand_empty_rest_of_line ();
4307 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4308 the .comm pseudo-op has the following symtax:
4310 <label> .comm <length>
4312 where <label> is optional and is a symbol whose address will be the start of
4313 a block of memory <length> bytes long. <length> must be an absolute
4314 expression. <length> bytes will be allocated in the current space
4323 label_symbol_struct
*label_symbol
= pa_get_label ();
4326 symbol
= label_symbol
->lss_label
;
4331 size
= get_absolute_expression ();
4335 /* It is incorrect to check S_IS_DEFINED at this point as
4336 the symbol will *always* be defined. FIXME. How to
4337 correctly determine when this label really as been
4339 if (S_GET_VALUE (symbol
))
4341 if (S_GET_VALUE (symbol
) != size
)
4343 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4344 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4350 S_SET_VALUE (symbol
, size
);
4351 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4352 S_SET_EXTERNAL (symbol
);
4355 demand_empty_rest_of_line ();
4358 /* Process a .END pseudo-op. */
4364 demand_empty_rest_of_line ();
4367 /* Process a .ENTER pseudo-op. This is not supported. */
4375 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4381 if (!within_procedure
)
4382 as_bad ("Misplaced .entry. Ignored.");
4385 if (!callinfo_found
)
4386 as_bad ("Missing .callinfo.");
4388 demand_empty_rest_of_line ();
4389 within_entry_exit
= TRUE
;
4392 /* SOM defers building of unwind descriptors until the link phase.
4393 The assembler is responsible for creating an R_ENTRY relocation
4394 to mark the beginning of a region and hold the unwind bits, and
4395 for creating an R_EXIT relocation to mark the end of the region.
4397 FIXME. ELF should be using the same conventions! The problem
4398 is an unwind requires too much relocation space. Hmmm. Maybe
4399 if we split the unwind bits up between the relocations which
4400 denote the entry and exit points. */
4401 if (last_call_info
->start_symbol
!= NULL
)
4403 char *where
= frag_more (0);
4405 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4406 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4407 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4408 (char *) &last_call_info
->ci_unwind
.descriptor
);
4413 /* Handle a .EQU pseudo-op. */
4419 label_symbol_struct
*label_symbol
= pa_get_label ();
4424 symbol
= label_symbol
->lss_label
;
4425 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4426 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4431 as_bad (".REG must use a label");
4433 as_bad (".EQU must use a label");
4436 pa_undefine_label ();
4437 demand_empty_rest_of_line ();
4440 /* Helper function. Does processing for the end of a function. This
4441 usually involves creating some relocations or building special
4442 symbols to mark the end of the function. */
4449 where
= frag_more (0);
4452 /* Mark the end of the function, stuff away the location of the frag
4453 for the end of the function, and finally call pa_build_unwind_subspace
4454 to add an entry in the unwind table. */
4455 hppa_elf_mark_end_of_function ();
4456 pa_build_unwind_subspace (last_call_info
);
4458 /* SOM defers building of unwind descriptors until the link phase.
4459 The assembler is responsible for creating an R_ENTRY relocation
4460 to mark the beginning of a region and hold the unwind bits, and
4461 for creating an R_EXIT relocation to mark the end of the region.
4463 FIXME. ELF should be using the same conventions! The problem
4464 is an unwind requires too much relocation space. Hmmm. Maybe
4465 if we split the unwind bits up between the relocations which
4466 denote the entry and exit points. */
4467 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4468 last_call_info
->start_symbol
, (offsetT
) 0,
4469 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4473 /* Process a .EXIT pseudo-op. */
4479 if (!within_procedure
)
4480 as_bad (".EXIT must appear within a procedure");
4483 if (!callinfo_found
)
4484 as_bad ("Missing .callinfo");
4487 if (!within_entry_exit
)
4488 as_bad ("No .ENTRY for this .EXIT");
4491 within_entry_exit
= FALSE
;
4496 demand_empty_rest_of_line ();
4499 /* Process a .EXPORT directive. This makes functions external
4500 and provides information such as argument relocation entries
4510 name
= input_line_pointer
;
4511 c
= get_symbol_end ();
4512 /* Make sure the given symbol exists. */
4513 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4515 as_bad ("Cannot define export symbol: %s\n", name
);
4516 p
= input_line_pointer
;
4518 input_line_pointer
++;
4522 /* OK. Set the external bits and process argument relocations. */
4523 S_SET_EXTERNAL (symbol
);
4524 p
= input_line_pointer
;
4526 if (!is_end_of_statement ())
4528 input_line_pointer
++;
4529 pa_type_args (symbol
, 1);
4531 pa_build_symextn_section ();
4536 demand_empty_rest_of_line ();
4539 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4542 pa_type_args (symbolP
, is_export
)
4547 unsigned int temp
, arg_reloc
;
4548 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4549 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4551 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4554 input_line_pointer
+= 8;
4555 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4556 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4557 type
= SYMBOL_TYPE_ABSOLUTE
;
4559 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4561 input_line_pointer
+= 4;
4562 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4563 instead one should be IMPORTing/EXPORTing ENTRY types.
4565 Complain if one tries to EXPORT a CODE type since that's never
4566 done. Both GCC and HP C still try to IMPORT CODE types, so
4567 silently fix them to be ENTRY types. */
4568 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4571 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4573 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4574 type
= SYMBOL_TYPE_ENTRY
;
4578 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4579 type
= SYMBOL_TYPE_CODE
;
4582 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4584 input_line_pointer
+= 4;
4585 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4586 type
= SYMBOL_TYPE_DATA
;
4588 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4590 input_line_pointer
+= 5;
4591 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4592 type
= SYMBOL_TYPE_ENTRY
;
4594 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4596 input_line_pointer
+= 9;
4597 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4598 type
= SYMBOL_TYPE_MILLICODE
;
4600 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4602 input_line_pointer
+= 6;
4603 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4604 type
= SYMBOL_TYPE_PLABEL
;
4606 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4608 input_line_pointer
+= 8;
4609 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4610 type
= SYMBOL_TYPE_PRI_PROG
;
4612 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4614 input_line_pointer
+= 8;
4615 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4616 type
= SYMBOL_TYPE_SEC_PROG
;
4619 /* SOM requires much more information about symbol types
4620 than BFD understands. This is how we get this information
4621 to the SOM BFD backend. */
4622 #ifdef obj_set_symbol_type
4623 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4626 /* Now that the type of the exported symbol has been handled,
4627 handle any argument relocation information. */
4628 while (!is_end_of_statement ())
4630 if (*input_line_pointer
== ',')
4631 input_line_pointer
++;
4632 name
= input_line_pointer
;
4633 c
= get_symbol_end ();
4634 /* Argument sources. */
4635 if ((strncasecmp (name
, "argw", 4) == 0))
4637 p
= input_line_pointer
;
4639 input_line_pointer
++;
4640 temp
= atoi (name
+ 4);
4641 name
= input_line_pointer
;
4642 c
= get_symbol_end ();
4643 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4644 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4645 *input_line_pointer
= c
;
4647 /* The return value. */
4648 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4650 p
= input_line_pointer
;
4652 input_line_pointer
++;
4653 name
= input_line_pointer
;
4654 c
= get_symbol_end ();
4655 arg_reloc
= pa_build_arg_reloc (name
);
4656 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4657 *input_line_pointer
= c
;
4659 /* Privelege level. */
4660 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4662 p
= input_line_pointer
;
4664 input_line_pointer
++;
4665 temp
= atoi (input_line_pointer
);
4666 c
= get_symbol_end ();
4667 *input_line_pointer
= c
;
4671 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4672 p
= input_line_pointer
;
4675 if (!is_end_of_statement ())
4676 input_line_pointer
++;
4680 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4681 assembly file must either be defined in the assembly file, or
4682 explicitly IMPORTED from another. */
4691 name
= input_line_pointer
;
4692 c
= get_symbol_end ();
4694 symbol
= symbol_find_or_make (name
);
4695 p
= input_line_pointer
;
4698 if (!is_end_of_statement ())
4700 input_line_pointer
++;
4701 pa_type_args (symbol
, 0);
4705 /* Sigh. To be compatable with the HP assembler and to help
4706 poorly written assembly code, we assign a type based on
4707 the the current segment. Note only BSF_FUNCTION really
4708 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4709 if (now_seg
== text_section
)
4710 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4712 /* If the section is undefined, then the symbol is undefined
4713 Since this is an import, leave the section undefined. */
4714 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4717 demand_empty_rest_of_line ();
4720 /* Handle a .LABEL pseudo-op. */
4728 name
= input_line_pointer
;
4729 c
= get_symbol_end ();
4731 if (strlen (name
) > 0)
4734 p
= input_line_pointer
;
4739 as_warn ("Missing label name on .LABEL");
4742 if (!is_end_of_statement ())
4744 as_warn ("extra .LABEL arguments ignored.");
4745 ignore_rest_of_line ();
4747 demand_empty_rest_of_line ();
4750 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4759 /* Handle a .ORIGIN pseudo-op. */
4766 pa_undefine_label ();
4769 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4770 is for static functions. FIXME. Should share more code with .EXPORT. */
4779 name
= input_line_pointer
;
4780 c
= get_symbol_end ();
4782 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4784 as_bad ("Cannot define static symbol: %s\n", name
);
4785 p
= input_line_pointer
;
4787 input_line_pointer
++;
4791 S_CLEAR_EXTERNAL (symbol
);
4792 p
= input_line_pointer
;
4794 if (!is_end_of_statement ())
4796 input_line_pointer
++;
4797 pa_type_args (symbol
, 0);
4801 demand_empty_rest_of_line ();
4804 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4805 of a procedure from a syntatical point of view. */
4811 struct call_info
*call_info
;
4814 if (within_procedure
)
4815 as_fatal ("Nested procedures");
4817 /* Reset global variables for new procedure. */
4818 callinfo_found
= FALSE
;
4819 within_procedure
= TRUE
;
4821 /* Create a new CODE subspace for each procedure if we are not
4822 using space/subspace aliases. */
4823 if (!USE_ALIASES
&& call_info_root
!= NULL
)
4825 /* Force creation of a new $CODE$ subspace; inherit attributes from
4826 the first $CODE$ subspace. */
4827 seg
= subseg_force_new ("$CODE$", 0);
4829 /* Now set the flags. */
4830 bfd_set_section_flags (stdoutput
, seg
,
4831 bfd_get_section_flags (abfd
, text_section
));
4833 /* Record any alignment request for this section. */
4834 record_alignment (seg
,
4835 bfd_get_section_alignment (stdoutput
, text_section
));
4837 /* Change the "text_section" to be our new $CODE$ subspace. */
4839 subseg_set (text_section
, 0);
4841 #ifdef obj_set_subsection_attributes
4842 /* Need a way to inherit the the access bits, sort key and quadrant
4843 from the first $CODE$ subspace. FIXME. */
4844 obj_set_subsection_attributes (seg
, current_space
->sd_seg
, 0x2c, 24, 0);
4848 /* Create another call_info structure. */
4849 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4852 as_fatal ("Cannot allocate unwind descriptor\n");
4854 bzero (call_info
, sizeof (struct call_info
));
4856 call_info
->ci_next
= NULL
;
4858 if (call_info_root
== NULL
)
4860 call_info_root
= call_info
;
4861 last_call_info
= call_info
;
4865 last_call_info
->ci_next
= call_info
;
4866 last_call_info
= call_info
;
4869 /* set up defaults on call_info structure */
4871 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4872 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4873 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4875 /* If we got a .PROC pseudo-op, we know that the function is defined
4876 locally. Make sure it gets into the symbol table. */
4878 label_symbol_struct
*label_symbol
= pa_get_label ();
4882 if (label_symbol
->lss_label
)
4884 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4885 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4888 /* The label was defined in a different segment. Fix that
4889 along with the value and associated fragment. */
4890 S_SET_SEGMENT (last_call_info
->start_symbol
, now_seg
);
4891 S_SET_VALUE (last_call_info
->start_symbol
,
4892 ((char*)obstack_next_free (&frags
)
4893 - frag_now
->fr_literal
));
4894 last_call_info
->start_symbol
->sy_frag
= frag_now
;
4898 as_bad ("Missing function name for .PROC (corrupted label chain)");
4901 last_call_info
->start_symbol
= NULL
;
4904 demand_empty_rest_of_line ();
4907 /* Process the syntatical end of a procedure. Make sure all the
4908 appropriate pseudo-ops were found within the procedure. */
4915 if (!within_procedure
)
4916 as_bad ("misplaced .procend");
4918 if (!callinfo_found
)
4919 as_bad ("Missing .callinfo for this procedure");
4921 if (within_entry_exit
)
4922 as_bad ("Missing .EXIT for a .ENTRY");
4925 /* ELF needs to mark the end of each function so that it can compute
4926 the size of the function (apparently its needed in the symbol table. */
4927 hppa_elf_mark_end_of_function ();
4930 within_procedure
= FALSE
;
4931 demand_empty_rest_of_line ();
4932 pa_undefine_label ();
4935 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4936 then create a new space entry to hold the information specified
4937 by the parameters to the .SPACE directive. */
4939 static sd_chain_struct
*
4940 pa_parse_space_stmt (space_name
, create_flag
)
4944 char *name
, *ptemp
, c
;
4945 char loadable
, defined
, private, sort
;
4947 asection
*seg
= NULL
;
4948 sd_chain_struct
*space
;
4950 /* load default values */
4956 if (strcmp (space_name
, "$TEXT$") == 0)
4958 seg
= pa_def_spaces
[0].segment
;
4959 sort
= pa_def_spaces
[0].sort
;
4961 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4963 seg
= pa_def_spaces
[1].segment
;
4964 sort
= pa_def_spaces
[1].sort
;
4967 if (!is_end_of_statement ())
4969 print_errors
= FALSE
;
4970 ptemp
= input_line_pointer
+ 1;
4971 /* First see if the space was specified as a number rather than
4972 as a name. According to the PA assembly manual the rest of
4973 the line should be ignored. */
4974 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
4975 input_line_pointer
= ptemp
;
4978 while (!is_end_of_statement ())
4980 input_line_pointer
++;
4981 name
= input_line_pointer
;
4982 c
= get_symbol_end ();
4983 if ((strncasecmp (name
, "spnum", 5) == 0))
4985 *input_line_pointer
= c
;
4986 input_line_pointer
++;
4987 spnum
= get_absolute_expression ();
4989 else if ((strncasecmp (name
, "sort", 4) == 0))
4991 *input_line_pointer
= c
;
4992 input_line_pointer
++;
4993 sort
= get_absolute_expression ();
4995 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4997 *input_line_pointer
= c
;
5000 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5002 *input_line_pointer
= c
;
5005 else if ((strncasecmp (name
, "private", 7) == 0))
5007 *input_line_pointer
= c
;
5012 as_bad ("Invalid .SPACE argument");
5013 *input_line_pointer
= c
;
5014 if (!is_end_of_statement ())
5015 input_line_pointer
++;
5019 print_errors
= TRUE
;
5022 if (create_flag
&& seg
== NULL
)
5023 seg
= subseg_new (space_name
, 0);
5025 /* If create_flag is nonzero, then create the new space with
5026 the attributes computed above. Else set the values in
5027 an already existing space -- this can only happen for
5028 the first occurence of a built-in space. */
5030 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5031 private, sort
, seg
, 1);
5034 space
= is_defined_space (space_name
);
5035 SPACE_SPNUM (space
) = spnum
;
5036 SPACE_DEFINED (space
) = defined
& 1;
5037 SPACE_USER_DEFINED (space
) = 1;
5038 space
->sd_seg
= seg
;
5041 #ifdef obj_set_section_attributes
5042 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5048 /* Handle a .SPACE pseudo-op; this switches the current space to the
5049 given space, creating the new space if necessary. */
5055 char *name
, c
, *space_name
, *save_s
;
5057 sd_chain_struct
*sd_chain
;
5059 if (within_procedure
)
5061 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5062 ignore_rest_of_line ();
5066 /* Check for some of the predefined spaces. FIXME: most of the code
5067 below is repeated several times, can we extract the common parts
5068 and place them into a subroutine or something similar? */
5069 /* FIXME Is this (and the next IF stmt) really right?
5070 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5071 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5073 input_line_pointer
+= 6;
5074 sd_chain
= is_defined_space ("$TEXT$");
5075 if (sd_chain
== NULL
)
5076 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5077 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5078 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5080 current_space
= sd_chain
;
5081 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5083 = pa_subsegment_to_subspace (text_section
,
5084 sd_chain
->sd_last_subseg
);
5085 demand_empty_rest_of_line ();
5088 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5090 input_line_pointer
+= 9;
5091 sd_chain
= is_defined_space ("$PRIVATE$");
5092 if (sd_chain
== NULL
)
5093 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5094 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5095 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5097 current_space
= sd_chain
;
5098 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5100 = pa_subsegment_to_subspace (data_section
,
5101 sd_chain
->sd_last_subseg
);
5102 demand_empty_rest_of_line ();
5105 if (!strncasecmp (input_line_pointer
,
5106 GDB_DEBUG_SPACE_NAME
,
5107 strlen (GDB_DEBUG_SPACE_NAME
)))
5109 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5110 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5111 if (sd_chain
== NULL
)
5112 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5113 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5114 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5116 current_space
= sd_chain
;
5119 asection
*gdb_section
5120 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5122 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5124 = pa_subsegment_to_subspace (gdb_section
,
5125 sd_chain
->sd_last_subseg
);
5127 demand_empty_rest_of_line ();
5131 /* It could be a space specified by number. */
5133 save_s
= input_line_pointer
;
5134 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5136 if (sd_chain
= pa_find_space_by_number (temp
))
5138 current_space
= sd_chain
;
5140 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5142 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5143 sd_chain
->sd_last_subseg
);
5144 demand_empty_rest_of_line ();
5149 /* Not a number, attempt to create a new space. */
5151 input_line_pointer
= save_s
;
5152 name
= input_line_pointer
;
5153 c
= get_symbol_end ();
5154 space_name
= xmalloc (strlen (name
) + 1);
5155 strcpy (space_name
, name
);
5156 *input_line_pointer
= c
;
5158 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5159 current_space
= sd_chain
;
5161 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5162 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5163 sd_chain
->sd_last_subseg
);
5164 demand_empty_rest_of_line ();
5168 /* Switch to a new space. (I think). FIXME. */
5177 sd_chain_struct
*space
;
5179 name
= input_line_pointer
;
5180 c
= get_symbol_end ();
5181 space
= is_defined_space (name
);
5185 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5188 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5190 *input_line_pointer
= c
;
5191 demand_empty_rest_of_line ();
5194 /* If VALUE is an exact power of two between zero and 2^31, then
5195 return log2 (VALUE). Else return -1. */
5203 while ((1 << shift
) != value
&& shift
< 32)
5212 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5213 given subspace, creating the new subspace if necessary.
5215 FIXME. Should mirror pa_space more closely, in particular how
5216 they're broken up into subroutines. */
5219 pa_subspace (unused
)
5222 char *name
, *ss_name
, *alias
, c
;
5223 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5224 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5225 sd_chain_struct
*space
;
5226 ssd_chain_struct
*ssd
;
5229 if (within_procedure
)
5231 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5232 ignore_rest_of_line ();
5236 name
= input_line_pointer
;
5237 c
= get_symbol_end ();
5238 ss_name
= xmalloc (strlen (name
) + 1);
5239 strcpy (ss_name
, name
);
5240 *input_line_pointer
= c
;
5242 /* Load default values. */
5255 space
= current_space
;
5256 ssd
= is_defined_subspace (ss_name
);
5257 /* Allow user to override the builtin attributes of subspaces. But
5258 only allow the attributes to be changed once! */
5259 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5261 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5262 if (!is_end_of_statement ())
5263 as_warn ("Parameters of an existing subspace can\'t be modified");
5264 demand_empty_rest_of_line ();
5269 /* A new subspace. Load default values if it matches one of
5270 the builtin subspaces. */
5272 while (pa_def_subspaces
[i
].name
)
5274 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5276 loadable
= pa_def_subspaces
[i
].loadable
;
5277 common
= pa_def_subspaces
[i
].common
;
5278 dup_common
= pa_def_subspaces
[i
].dup_common
;
5279 code_only
= pa_def_subspaces
[i
].code_only
;
5280 zero
= pa_def_subspaces
[i
].zero
;
5281 space_index
= pa_def_subspaces
[i
].space_index
;
5282 alignment
= pa_def_subspaces
[i
].alignment
;
5283 quadrant
= pa_def_subspaces
[i
].quadrant
;
5284 access
= pa_def_subspaces
[i
].access
;
5285 sort
= pa_def_subspaces
[i
].sort
;
5286 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5287 alias
= pa_def_subspaces
[i
].alias
;
5294 /* We should be working with a new subspace now. Fill in
5295 any information as specified by the user. */
5296 if (!is_end_of_statement ())
5298 input_line_pointer
++;
5299 while (!is_end_of_statement ())
5301 name
= input_line_pointer
;
5302 c
= get_symbol_end ();
5303 if ((strncasecmp (name
, "quad", 4) == 0))
5305 *input_line_pointer
= c
;
5306 input_line_pointer
++;
5307 quadrant
= get_absolute_expression ();
5309 else if ((strncasecmp (name
, "align", 5) == 0))
5311 *input_line_pointer
= c
;
5312 input_line_pointer
++;
5313 alignment
= get_absolute_expression ();
5314 if (log2 (alignment
) == -1)
5316 as_bad ("Alignment must be a power of 2");
5320 else if ((strncasecmp (name
, "access", 6) == 0))
5322 *input_line_pointer
= c
;
5323 input_line_pointer
++;
5324 access
= get_absolute_expression ();
5326 else if ((strncasecmp (name
, "sort", 4) == 0))
5328 *input_line_pointer
= c
;
5329 input_line_pointer
++;
5330 sort
= get_absolute_expression ();
5332 else if ((strncasecmp (name
, "code_only", 9) == 0))
5334 *input_line_pointer
= c
;
5337 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5339 *input_line_pointer
= c
;
5342 else if ((strncasecmp (name
, "common", 6) == 0))
5344 *input_line_pointer
= c
;
5347 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5349 *input_line_pointer
= c
;
5352 else if ((strncasecmp (name
, "zero", 4) == 0))
5354 *input_line_pointer
= c
;
5357 else if ((strncasecmp (name
, "first", 5) == 0))
5358 as_bad ("FIRST not supported as a .SUBSPACE argument");
5360 as_bad ("Invalid .SUBSPACE argument");
5361 if (!is_end_of_statement ())
5362 input_line_pointer
++;
5366 /* Compute a reasonable set of BFD flags based on the information
5367 in the .subspace directive. */
5368 applicable
= bfd_applicable_section_flags (stdoutput
);
5371 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5374 if (common
|| dup_common
)
5375 flags
|= SEC_IS_COMMON
;
5377 /* This is a zero-filled subspace (eg BSS). */
5381 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5382 applicable
&= flags
;
5384 /* If this is an existing subspace, then we want to use the
5385 segment already associated with the subspace.
5387 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5388 lots of sections. It might be a problem in the PA ELF
5389 code, I do not know yet. For now avoid creating anything
5390 but the "standard" sections for ELF. */
5392 section
= ssd
->ssd_seg
;
5394 section
= subseg_new (alias
, 0);
5395 else if (!alias
&& USE_ALIASES
)
5397 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5398 demand_empty_rest_of_line ();
5402 section
= subseg_new (ss_name
, 0);
5404 /* Now set the flags. */
5405 bfd_set_section_flags (stdoutput
, section
, applicable
);
5407 /* Record any alignment request for this section. */
5408 record_alignment (section
, log2 (alignment
));
5410 /* Set the starting offset for this section. */
5411 bfd_set_section_vma (stdoutput
, section
,
5412 pa_subspace_start (space
, quadrant
));
5414 /* Now that all the flags are set, update an existing subspace,
5415 or create a new one. */
5418 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5419 code_only
, common
, dup_common
,
5420 sort
, zero
, access
, space_index
,
5421 alignment
, quadrant
,
5424 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5426 dup_common
, zero
, sort
,
5427 access
, space_index
,
5428 alignment
, quadrant
, section
);
5430 demand_empty_rest_of_line ();
5431 current_subspace
->ssd_seg
= section
;
5432 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5434 SUBSPACE_DEFINED (current_subspace
) = 1;
5438 /* Create default space and subspace dictionaries. */
5445 space_dict_root
= NULL
;
5446 space_dict_last
= NULL
;
5449 while (pa_def_spaces
[i
].name
)
5453 /* Pick the right name to use for the new section. */
5454 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5455 name
= pa_def_spaces
[i
].alias
;
5457 name
= pa_def_spaces
[i
].name
;
5459 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5460 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5461 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5462 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5463 pa_def_spaces
[i
].segment
, 0);
5468 while (pa_def_subspaces
[i
].name
)
5471 int applicable
, subsegment
;
5472 asection
*segment
= NULL
;
5473 sd_chain_struct
*space
;
5475 /* Pick the right name for the new section and pick the right
5476 subsegment number. */
5477 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5479 name
= pa_def_subspaces
[i
].alias
;
5480 subsegment
= pa_def_subspaces
[i
].subsegment
;
5484 name
= pa_def_subspaces
[i
].name
;
5488 /* Create the new section. */
5489 segment
= subseg_new (name
, subsegment
);
5492 /* For SOM we want to replace the standard .text, .data, and .bss
5493 sections with our own. */
5494 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5496 text_section
= segment
;
5497 applicable
= bfd_applicable_section_flags (stdoutput
);
5498 bfd_set_section_flags (stdoutput
, text_section
,
5499 applicable
& (SEC_ALLOC
| SEC_LOAD
5500 | SEC_RELOC
| SEC_CODE
5502 | SEC_HAS_CONTENTS
));
5504 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5506 data_section
= segment
;
5507 applicable
= bfd_applicable_section_flags (stdoutput
);
5508 bfd_set_section_flags (stdoutput
, data_section
,
5509 applicable
& (SEC_ALLOC
| SEC_LOAD
5511 | SEC_HAS_CONTENTS
));
5515 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5517 bss_section
= segment
;
5518 applicable
= bfd_applicable_section_flags (stdoutput
);
5519 bfd_set_section_flags (stdoutput
, bss_section
,
5520 applicable
& SEC_ALLOC
);
5523 /* Find the space associated with this subspace. */
5524 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5525 def_space_index
].segment
);
5528 as_fatal ("Internal error: Unable to find containing space for %s.",
5529 pa_def_subspaces
[i
].name
);
5532 create_new_subspace (space
, name
,
5533 pa_def_subspaces
[i
].loadable
,
5534 pa_def_subspaces
[i
].code_only
,
5535 pa_def_subspaces
[i
].common
,
5536 pa_def_subspaces
[i
].dup_common
,
5537 pa_def_subspaces
[i
].zero
,
5538 pa_def_subspaces
[i
].sort
,
5539 pa_def_subspaces
[i
].access
,
5540 pa_def_subspaces
[i
].space_index
,
5541 pa_def_subspaces
[i
].alignment
,
5542 pa_def_subspaces
[i
].quadrant
,
5550 /* Create a new space NAME, with the appropriate flags as defined
5551 by the given parameters. */
5553 static sd_chain_struct
*
5554 create_new_space (name
, spnum
, loadable
, defined
, private,
5555 sort
, seg
, user_defined
)
5565 sd_chain_struct
*chain_entry
;
5567 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5569 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5572 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5573 strcpy (SPACE_NAME (chain_entry
), name
);
5574 SPACE_DEFINED (chain_entry
) = defined
;
5575 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5576 SPACE_SPNUM (chain_entry
) = spnum
;
5578 chain_entry
->sd_seg
= seg
;
5579 chain_entry
->sd_last_subseg
= -1;
5580 chain_entry
->sd_next
= NULL
;
5582 /* Find spot for the new space based on its sort key. */
5583 if (!space_dict_last
)
5584 space_dict_last
= chain_entry
;
5586 if (space_dict_root
== NULL
)
5587 space_dict_root
= chain_entry
;
5590 sd_chain_struct
*chain_pointer
;
5591 sd_chain_struct
*prev_chain_pointer
;
5593 chain_pointer
= space_dict_root
;
5594 prev_chain_pointer
= NULL
;
5596 while (chain_pointer
)
5598 prev_chain_pointer
= chain_pointer
;
5599 chain_pointer
= chain_pointer
->sd_next
;
5602 /* At this point we've found the correct place to add the new
5603 entry. So add it and update the linked lists as appropriate. */
5604 if (prev_chain_pointer
)
5606 chain_entry
->sd_next
= chain_pointer
;
5607 prev_chain_pointer
->sd_next
= chain_entry
;
5611 space_dict_root
= chain_entry
;
5612 chain_entry
->sd_next
= chain_pointer
;
5615 if (chain_entry
->sd_next
== NULL
)
5616 space_dict_last
= chain_entry
;
5619 /* This is here to catch predefined spaces which do not get
5620 modified by the user's input. Another call is found at
5621 the bottom of pa_parse_space_stmt to handle cases where
5622 the user modifies a predefined space. */
5623 #ifdef obj_set_section_attributes
5624 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5630 /* Create a new subspace NAME, with the appropriate flags as defined
5631 by the given parameters.
5633 Add the new subspace to the subspace dictionary chain in numerical
5634 order as defined by the SORT entries. */
5636 static ssd_chain_struct
*
5637 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5638 dup_common
, is_zero
, sort
, access
, space_index
,
5639 alignment
, quadrant
, seg
)
5640 sd_chain_struct
*space
;
5642 char loadable
, code_only
, common
, dup_common
, is_zero
;
5650 ssd_chain_struct
*chain_entry
;
5652 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5654 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5656 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5657 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5659 /* Initialize subspace_defined. When we hit a .subspace directive
5660 we'll set it to 1 which "locks-in" the subspace attributes. */
5661 SUBSPACE_DEFINED (chain_entry
) = 0;
5663 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5664 chain_entry
->ssd_seg
= seg
;
5665 chain_entry
->ssd_next
= NULL
;
5667 /* Find spot for the new subspace based on its sort key. */
5668 if (space
->sd_subspaces
== NULL
)
5669 space
->sd_subspaces
= chain_entry
;
5672 ssd_chain_struct
*chain_pointer
;
5673 ssd_chain_struct
*prev_chain_pointer
;
5675 chain_pointer
= space
->sd_subspaces
;
5676 prev_chain_pointer
= NULL
;
5678 while (chain_pointer
)
5680 prev_chain_pointer
= chain_pointer
;
5681 chain_pointer
= chain_pointer
->ssd_next
;
5684 /* Now we have somewhere to put the new entry. Insert it and update
5686 if (prev_chain_pointer
)
5688 chain_entry
->ssd_next
= chain_pointer
;
5689 prev_chain_pointer
->ssd_next
= chain_entry
;
5693 space
->sd_subspaces
= chain_entry
;
5694 chain_entry
->ssd_next
= chain_pointer
;
5698 #ifdef obj_set_subsection_attributes
5699 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5706 /* Update the information for the given subspace based upon the
5707 various arguments. Return the modified subspace chain entry. */
5709 static ssd_chain_struct
*
5710 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5711 zero
, access
, space_index
, alignment
, quadrant
, section
)
5712 sd_chain_struct
*space
;
5726 ssd_chain_struct
*chain_entry
;
5728 chain_entry
= is_defined_subspace (name
);
5730 #ifdef obj_set_subsection_attributes
5731 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5738 /* Return the space chain entry for the space with the name NAME or
5739 NULL if no such space exists. */
5741 static sd_chain_struct
*
5742 is_defined_space (name
)
5745 sd_chain_struct
*chain_pointer
;
5747 for (chain_pointer
= space_dict_root
;
5749 chain_pointer
= chain_pointer
->sd_next
)
5751 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5752 return chain_pointer
;
5755 /* No mapping from segment to space was found. Return NULL. */
5759 /* Find and return the space associated with the given seg. If no mapping
5760 from the given seg to a space is found, then return NULL.
5762 Unlike subspaces, the number of spaces is not expected to grow much,
5763 so a linear exhaustive search is OK here. */
5765 static sd_chain_struct
*
5766 pa_segment_to_space (seg
)
5769 sd_chain_struct
*space_chain
;
5771 /* Walk through each space looking for the correct mapping. */
5772 for (space_chain
= space_dict_root
;
5774 space_chain
= space_chain
->sd_next
)
5776 if (space_chain
->sd_seg
== seg
)
5780 /* Mapping was not found. Return NULL. */
5784 /* Return the space chain entry for the subspace with the name NAME or
5785 NULL if no such subspace exists.
5787 Uses a linear search through all the spaces and subspaces, this may
5788 not be appropriate if we ever being placing each function in its
5791 static ssd_chain_struct
*
5792 is_defined_subspace (name
)
5795 sd_chain_struct
*space_chain
;
5796 ssd_chain_struct
*subspace_chain
;
5798 /* Walk through each space. */
5799 for (space_chain
= space_dict_root
;
5801 space_chain
= space_chain
->sd_next
)
5803 /* Walk through each subspace looking for a name which matches. */
5804 for (subspace_chain
= space_chain
->sd_subspaces
;
5806 subspace_chain
= subspace_chain
->ssd_next
)
5807 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5808 return subspace_chain
;
5811 /* Subspace wasn't found. Return NULL. */
5815 /* Find and return the subspace associated with the given seg. If no
5816 mapping from the given seg to a subspace is found, then return NULL.
5818 If we ever put each procedure/function within its own subspace
5819 (to make life easier on the compiler and linker), then this will have
5820 to become more efficient. */
5822 static ssd_chain_struct
*
5823 pa_subsegment_to_subspace (seg
, subseg
)
5827 sd_chain_struct
*space_chain
;
5828 ssd_chain_struct
*subspace_chain
;
5830 /* Walk through each space. */
5831 for (space_chain
= space_dict_root
;
5833 space_chain
= space_chain
->sd_next
)
5835 if (space_chain
->sd_seg
== seg
)
5837 /* Walk through each subspace within each space looking for
5838 the correct mapping. */
5839 for (subspace_chain
= space_chain
->sd_subspaces
;
5841 subspace_chain
= subspace_chain
->ssd_next
)
5842 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5843 return subspace_chain
;
5847 /* No mapping from subsegment to subspace found. Return NULL. */
5851 /* Given a number, try and find a space with the name number.
5853 Return a pointer to a space dictionary chain entry for the space
5854 that was found or NULL on failure. */
5856 static sd_chain_struct
*
5857 pa_find_space_by_number (number
)
5860 sd_chain_struct
*space_chain
;
5862 for (space_chain
= space_dict_root
;
5864 space_chain
= space_chain
->sd_next
)
5866 if (SPACE_SPNUM (space_chain
) == number
)
5870 /* No appropriate space found. Return NULL. */
5874 /* Return the starting address for the given subspace. If the starting
5875 address is unknown then return zero. */
5878 pa_subspace_start (space
, quadrant
)
5879 sd_chain_struct
*space
;
5882 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5883 is not correct for the PA OSF1 port. */
5884 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5886 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5892 /* FIXME. Needs documentation. */
5894 pa_next_subseg (space
)
5895 sd_chain_struct
*space
;
5898 space
->sd_last_subseg
++;
5899 return space
->sd_last_subseg
;
5902 /* Helper function for pa_stringer. Used to find the end of
5909 unsigned int c
= *s
& CHAR_MASK
;
5921 /* Handle a .STRING type pseudo-op. */
5924 pa_stringer (append_zero
)
5927 char *s
, num_buf
[4];
5931 /* Preprocess the string to handle PA-specific escape sequences.
5932 For example, \xDD where DD is a hexidecimal number should be
5933 changed to \OOO where OOO is an octal number. */
5935 /* Skip the opening quote. */
5936 s
= input_line_pointer
+ 1;
5938 while (is_a_char (c
= pa_stringer_aux (s
++)))
5945 /* Handle \x<num>. */
5948 unsigned int number
;
5953 /* Get pas the 'x'. */
5955 for (num_digit
= 0, number
= 0, dg
= *s
;
5957 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5958 || (dg
>= 'A' && dg
<= 'F'));
5962 number
= number
* 16 + dg
- '0';
5963 else if (dg
>= 'a' && dg
<= 'f')
5964 number
= number
* 16 + dg
- 'a' + 10;
5966 number
= number
* 16 + dg
- 'A' + 10;
5976 sprintf (num_buf
, "%02o", number
);
5979 sprintf (num_buf
, "%03o", number
);
5982 for (i
= 0; i
<= num_digit
; i
++)
5983 s_start
[i
] = num_buf
[i
];
5987 /* This might be a "\"", skip over the escaped char. */
5994 stringer (append_zero
);
5995 pa_undefine_label ();
5998 /* Handle a .VERSION pseudo-op. */
6005 pa_undefine_label ();
6008 /* Handle a .COPYRIGHT pseudo-op. */
6011 pa_copyright (unused
)
6015 pa_undefine_label ();
6018 /* Just like a normal cons, but when finished we have to undefine
6019 the latest space label. */
6026 pa_undefine_label ();
6029 /* Switch to the data space. As usual delete our label. */
6036 pa_undefine_label ();
6039 /* Like float_cons, but we need to undefine our label. */
6042 pa_float_cons (float_type
)
6045 float_cons (float_type
);
6046 pa_undefine_label ();
6049 /* Like s_fill, but delete our label when finished. */
6056 pa_undefine_label ();
6059 /* Like lcomm, but delete our label when finished. */
6062 pa_lcomm (needs_align
)
6065 s_lcomm (needs_align
);
6066 pa_undefine_label ();
6069 /* Like lsym, but delete our label when finished. */
6076 pa_undefine_label ();
6079 /* Switch to the text space. Like s_text, but delete our
6080 label when finished. */
6086 pa_undefine_label ();
6089 /* On the PA relocations which involve function symbols must not be
6090 adjusted. This so that the linker can know when/how to create argument
6091 relocation stubs for indirect calls and calls to static functions.
6093 FIXME. Also reject R_HPPA relocations which are 32 bits
6094 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6095 needs to generate relocations to push the addend and symbol value
6096 onto the stack, add them, then pop the value off the stack and
6097 use it in a relocation -- yuk. */
6100 hppa_fix_adjustable (fixp
)
6103 struct hppa_fix_struct
*hppa_fix
;
6105 hppa_fix
= fixp
->tc_fix_data
;
6107 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6110 if (fixp
->fx_addsy
== 0
6111 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6117 /* Return nonzero if the fixup in FIXP will require a relocation,
6118 even it if appears that the fixup could be completely handled
6122 hppa_force_relocation (fixp
)
6125 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
6128 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6132 #define stub_needed(CALLER, CALLEE) \
6133 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6135 /* It is necessary to force PC-relative calls/jumps to have a relocation
6136 entry if they're going to need either a argument relocation or long
6137 call stub. FIXME. Can't we need the same for absolute calls? */
6138 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6139 && (stub_needed (((obj_symbol_type
*)
6140 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6141 hppa_fixp
->fx_arg_reloc
)))
6146 /* No need (yet) to force another relocations to be emitted. */
6150 /* Now for some ELF specific code. FIXME. */
6152 static symext_chainS
*symext_rootP
;
6153 static symext_chainS
*symext_lastP
;
6155 /* Mark the end of a function so that it's possible to compute
6156 the size of the function in hppa_elf_final_processing. */
6159 hppa_elf_mark_end_of_function ()
6161 /* ELF does not have EXIT relocations. All we do is create a
6162 temporary symbol marking the end of the function. */
6163 char *name
= (char *)
6164 xmalloc (strlen ("L$\001end_") +
6165 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6171 strcpy (name
, "L$\001end_");
6172 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6174 /* If we have a .exit followed by a .procend, then the
6175 symbol will have already been defined. */
6176 symbolP
= symbol_find (name
);
6179 /* The symbol has already been defined! This can
6180 happen if we have a .exit followed by a .procend.
6182 This is *not* an error. All we want to do is free
6183 the memory we just allocated for the name and continue. */
6188 /* symbol value should be the offset of the
6189 last instruction of the function */
6190 symbolP
= symbol_new (name
, now_seg
,
6191 (valueT
) (obstack_next_free (&frags
)
6192 - frag_now
->fr_literal
- 4),
6196 symbolP
->bsym
->flags
= BSF_LOCAL
;
6197 symbol_table_insert (symbolP
);
6201 last_call_info
->end_symbol
= symbolP
;
6203 as_bad ("Symbol '%s' could not be created.", name
);
6207 as_bad ("No memory for symbol name.");
6211 /* Do any symbol processing requested by the target-cpu or target-format. */
6214 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6216 elf_symbol_type
*symbolP
;
6219 symext_chainS
*symextP
;
6220 unsigned int arg_reloc
;
6222 /* Only functions can have argument relocations. */
6223 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6226 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6228 /* If there are no argument relocation bits, then no relocation is
6229 necessary. Do not add this to the symextn section. */
6233 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6235 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6236 symextP
[0].next
= &symextP
[1];
6238 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6239 symextP
[1].next
= NULL
;
6241 if (symext_rootP
== NULL
)
6243 symext_rootP
= &symextP
[0];
6244 symext_lastP
= &symextP
[1];
6248 symext_lastP
->next
= &symextP
[0];
6249 symext_lastP
= &symextP
[1];
6253 /* Make sections needed by the target cpu and/or target format. */
6255 hppa_tc_make_sections (abfd
)
6258 symext_chainS
*symextP
;
6259 segT save_seg
= now_seg
;
6260 subsegT save_subseg
= now_subseg
;
6262 /* Build the symbol extension section. */
6263 hppa_tc_make_symextn_section ();
6265 /* Force some calculation to occur. */
6266 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6268 hppa_elf_stub_finish (abfd
);
6270 /* If no symbols for the symbol extension section, then stop now. */
6271 if (symext_rootP
== NULL
)
6274 /* Switch to the symbol extension section. */
6275 subseg_new (SYMEXTN_SECTION_NAME
, 0);
6277 frag_wane (frag_now
);
6280 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6283 int *symtab_map
= elf_sym_extra (abfd
);
6286 /* First, patch the symbol extension record to reflect the true
6287 symbol table index. */
6289 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6291 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6292 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6296 ptr
= frag_more (sizeof (symextP
->entry
));
6297 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6300 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6301 frag_wane (frag_now
);
6303 /* Switch back to the original segment. */
6304 subseg_set (save_seg
, save_subseg
);
6307 /* Make the symbol extension section. */
6310 hppa_tc_make_symextn_section ()
6314 symext_chainS
*symextP
;
6318 segT save_seg
= now_seg
;
6319 subsegT save_subseg
= now_subseg
;
6321 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6324 size
= sizeof (symext_entryS
) * n
;
6326 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6328 bfd_set_section_flags (stdoutput
, symextn_sec
,
6329 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6330 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6332 /* Now, switch back to the original segment. */
6333 subseg_set (save_seg
, save_subseg
);
6337 /* Build the symbol extension section. */
6340 pa_build_symextn_section ()
6343 asection
*save_seg
= now_seg
;
6344 subsegT subseg
= (subsegT
) 0;
6345 subsegT save_subseg
= now_subseg
;
6347 seg
= subseg_new (".hppa_symextn", subseg
);
6348 bfd_set_section_flags (stdoutput
,
6350 SEC_HAS_CONTENTS
| SEC_READONLY
6351 | SEC_ALLOC
| SEC_LOAD
);
6353 subseg_set (save_seg
, save_subseg
);
6356 /* For ELF, this function serves one purpose: to setup the st_size
6357 field of STT_FUNC symbols. To do this, we need to scan the
6358 call_info structure list, determining st_size in by taking the
6359 difference in the address of the beginning/end marker symbols. */
6362 elf_hppa_final_processing ()
6364 struct call_info
*call_info_pointer
;
6366 for (call_info_pointer
= call_info_root
;
6368 call_info_pointer
= call_info_pointer
->ci_next
)
6370 elf_symbol_type
*esym
6371 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6372 esym
->internal_elf_sym
.st_size
=
6373 S_GET_VALUE (call_info_pointer
->end_symbol
)
6374 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;