1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989, 1996, 1997, 1998 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 2, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 ".PARISC.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. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type
;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type
;
87 /* This apparently isn't in older versions of hpux reloc.h. */
89 #define R_DLT_REL 0x78
101 /* Various structures and types used internally in tc-hppa.c. */
103 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
107 unsigned int cannot_unwind
:1;
108 unsigned int millicode
:1;
109 unsigned int millicode_save_rest
:1;
110 unsigned int region_desc
:2;
111 unsigned int save_sr
:2;
112 unsigned int entry_fr
:4;
113 unsigned int entry_gr
:5;
114 unsigned int args_stored
:1;
115 unsigned int call_fr
:5;
116 unsigned int call_gr
:5;
117 unsigned int save_sp
:1;
118 unsigned int save_rp
:1;
119 unsigned int save_rp_in_frame
:1;
120 unsigned int extn_ptr_defined
:1;
121 unsigned int cleanup_defined
:1;
123 unsigned int hpe_interrupt_marker
:1;
124 unsigned int hpux_interrupt_marker
:1;
125 unsigned int reserved
:3;
126 unsigned int frame_size
:27;
131 /* Starting and ending offsets of the region described by
133 unsigned int start_offset
;
134 unsigned int end_offset
;
135 struct unwind_desc descriptor
;
138 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
139 control the entry and exit code they generate. It is also used in
140 creation of the correct stack unwind descriptors.
142 NOTE: GAS does not support .enter and .leave for the generation of
143 prologues and epilogues. FIXME.
145 The fields in structure roughly correspond to the arguments available on the
146 .callinfo pseudo-op. */
150 /* The unwind descriptor being built. */
151 struct unwind_table ci_unwind
;
153 /* Name of this function. */
154 symbolS
*start_symbol
;
156 /* (temporary) symbol used to mark the end of this function. */
159 /* Next entry in the chain. */
160 struct call_info
*ci_next
;
163 /* Operand formats for FP instructions. Note not all FP instructions
164 allow all four formats to be used (for example fmpysub only allows
168 SGL
, DBL
, ILLEGAL_FMT
, QUAD
172 /* This fully describes the symbol types which may be attached to
173 an EXPORT or IMPORT directive. Only SOM uses this formation
174 (ELF has no need for it). */
178 SYMBOL_TYPE_ABSOLUTE
,
182 SYMBOL_TYPE_MILLICODE
,
184 SYMBOL_TYPE_PRI_PROG
,
185 SYMBOL_TYPE_SEC_PROG
,
189 /* This structure contains information needed to assemble
190 individual instructions. */
193 /* Holds the opcode after parsing by pa_ip. */
194 unsigned long opcode
;
196 /* Holds an expression associated with the current instruction. */
199 /* Does this instruction use PC-relative addressing. */
202 /* Floating point formats for operand1 and operand2. */
203 fp_operand_format fpof1
;
204 fp_operand_format fpof2
;
206 /* Holds the field selector for this instruction
207 (for example L%, LR%, etc). */
210 /* Holds any argument relocation bits associated with this
211 instruction. (instruction should be some sort of call). */
214 /* The format specification for this instruction. */
217 /* The relocation (if any) associated with this instruction. */
221 /* PA-89 floating point registers are arranged like this:
224 +--------------+--------------+
225 | 0 or 16L | 16 or 16R |
226 +--------------+--------------+
227 | 1 or 17L | 17 or 17R |
228 +--------------+--------------+
236 +--------------+--------------+
237 | 14 or 30L | 30 or 30R |
238 +--------------+--------------+
239 | 15 or 31L | 31 or 31R |
240 +--------------+--------------+
243 The following is a version of pa_parse_number that
244 handles the L/R notation and returns the correct
245 value to put into the instruction register field.
246 The correct value to put into the instruction is
247 encoded in the structure 'pa_11_fp_reg_struct'. */
249 struct pa_11_fp_reg_struct
251 /* The register number. */
258 /* Additional information needed to build argument relocation stubs. */
261 /* The argument relocation specification. */
262 unsigned int arg_reloc
;
264 /* Number of arguments. */
265 unsigned int arg_count
;
268 /* This structure defines an entry in the subspace dictionary
271 struct subspace_dictionary_chain
273 /* Nonzero if this space has been defined by the user code. */
274 unsigned int ssd_defined
;
276 /* Name of this subspace. */
279 /* GAS segment and subsegment associated with this subspace. */
283 /* Next space in the subspace dictionary chain. */
284 struct subspace_dictionary_chain
*ssd_next
;
287 typedef struct subspace_dictionary_chain ssd_chain_struct
;
289 /* This structure defines an entry in the subspace dictionary
292 struct space_dictionary_chain
294 /* Nonzero if this space has been defined by the user code or
295 as a default space. */
296 unsigned int sd_defined
;
298 /* Nonzero if this spaces has been defined by the user code. */
299 unsigned int sd_user_defined
;
301 /* The space number (or index). */
302 unsigned int sd_spnum
;
304 /* The name of this subspace. */
307 /* GAS segment to which this subspace corresponds. */
310 /* Current subsegment number being used. */
313 /* The chain of subspaces contained within this space. */
314 ssd_chain_struct
*sd_subspaces
;
316 /* The next entry in the space dictionary chain. */
317 struct space_dictionary_chain
*sd_next
;
320 typedef struct space_dictionary_chain sd_chain_struct
;
322 /* Structure for previous label tracking. Needed so that alignments,
323 callinfo declarations, etc can be easily attached to a particular
325 typedef struct label_symbol_struct
327 struct symbol
*lss_label
;
328 sd_chain_struct
*lss_space
;
329 struct label_symbol_struct
*lss_next
;
333 /* This structure defines attributes of the default subspace
334 dictionary entries. */
336 struct default_subspace_dict
338 /* Name of the subspace. */
341 /* FIXME. Is this still needed? */
344 /* Nonzero if this subspace is loadable. */
347 /* Nonzero if this subspace contains only code. */
350 /* Nonzero if this is a common subspace. */
353 /* Nonzero if this is a common subspace which allows symbols
354 to be multiply defined. */
357 /* Nonzero if this subspace should be zero filled. */
360 /* Sort key for this subspace. */
363 /* Access control bits for this subspace. Can represent RWX access
364 as well as privilege level changes for gateways. */
367 /* Index of containing space. */
370 /* Alignment (in bytes) of this subspace. */
373 /* Quadrant within space where this subspace should be loaded. */
376 /* An index into the default spaces array. */
379 /* An alias for this section (or NULL if no alias exists). */
382 /* Subsegment associated with this subspace. */
386 /* This structure defines attributes of the default space
387 dictionary entries. */
389 struct default_space_dict
391 /* Name of the space. */
394 /* Space number. It is possible to identify spaces within
395 assembly code numerically! */
398 /* Nonzero if this space is loadable. */
401 /* Nonzero if this space is "defined". FIXME is still needed */
404 /* Nonzero if this space can not be shared. */
407 /* Sort key for this space. */
410 /* Segment associated with this space. */
413 /* An alias for this section (or NULL if no alias exists). */
417 /* Extra information needed to perform fixups (relocations) on the PA. */
418 struct hppa_fix_struct
420 /* The field selector. */
421 enum hppa_reloc_field_selector_type_alt fx_r_field
;
426 /* Format of fixup. */
429 /* Argument relocation bits. */
432 /* The segment this fixup appears in. */
436 /* Structure to hold information about predefined registers. */
444 /* This structure defines the mapping from a FP condition string
445 to a condition number which can be recorded in an instruction. */
452 /* This structure defines a mapping from a field selector
453 string to a field selector type. */
454 struct selector_entry
460 /* Prototypes for functions local to tc-hppa.c. */
462 static void pa_check_current_space_and_subspace
PARAMS ((void));
463 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
464 static void pa_cons
PARAMS ((int));
465 static void pa_data
PARAMS ((int));
466 static void pa_float_cons
PARAMS ((int));
467 static void pa_fill
PARAMS ((int));
468 static void pa_lcomm
PARAMS ((int));
469 static void pa_lsym
PARAMS ((int));
470 static void pa_stringer
PARAMS ((int));
471 static void pa_text
PARAMS ((int));
472 static void pa_version
PARAMS ((int));
473 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
474 static int get_expression
PARAMS ((char *));
475 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
476 static int evaluate_absolute
PARAMS ((struct pa_it
*));
477 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
478 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
479 static int pa_parse_nullif
PARAMS ((char **));
480 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
481 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
482 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
483 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
484 static void pa_align
PARAMS ((int));
485 static void pa_block
PARAMS ((int));
486 static void pa_brtab
PARAMS ((int));
487 static void pa_try
PARAMS ((int));
488 static void pa_call
PARAMS ((int));
489 static void pa_call_args
PARAMS ((struct call_desc
*));
490 static void pa_callinfo
PARAMS ((int));
491 static void pa_code
PARAMS ((int));
492 static void pa_comm
PARAMS ((int));
493 static void pa_copyright
PARAMS ((int));
494 static void pa_end
PARAMS ((int));
495 static void pa_enter
PARAMS ((int));
496 static void pa_entry
PARAMS ((int));
497 static void pa_equ
PARAMS ((int));
498 static void pa_exit
PARAMS ((int));
499 static void pa_export
PARAMS ((int));
500 static void pa_type_args
PARAMS ((symbolS
*, int));
501 static void pa_import
PARAMS ((int));
502 static void pa_label
PARAMS ((int));
503 static void pa_leave
PARAMS ((int));
504 static void pa_level
PARAMS ((int));
505 static void pa_origin
PARAMS ((int));
506 static void pa_proc
PARAMS ((int));
507 static void pa_procend
PARAMS ((int));
508 static void pa_space
PARAMS ((int));
509 static void pa_spnum
PARAMS ((int));
510 static void pa_subspace
PARAMS ((int));
511 static void pa_param
PARAMS ((int));
512 static void pa_undefine_label
PARAMS ((void));
513 static int need_pa11_opcode
PARAMS ((struct pa_it
*,
514 struct pa_11_fp_reg_struct
*));
515 static int pa_parse_number
PARAMS ((char **, struct pa_11_fp_reg_struct
*));
516 static label_symbol_struct
*pa_get_label
PARAMS ((void));
517 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, int,
520 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
525 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
526 char *, int, int, int,
530 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
531 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
532 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
533 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
535 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
536 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
537 static void pa_ip
PARAMS ((char *));
538 static void fix_new_hppa
PARAMS ((fragS
*, int, int, symbolS
*,
539 long, expressionS
*, int,
540 bfd_reloc_code_real_type
,
541 enum hppa_reloc_field_selector_type_alt
,
543 static int is_end_of_statement
PARAMS ((void));
544 static int reg_name_search
PARAMS ((char *));
545 static int pa_chk_field_selector
PARAMS ((char **));
546 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
547 static void process_exit
PARAMS ((void));
548 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
549 static int log2
PARAMS ((int));
550 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
551 static unsigned int pa_stringer_aux
PARAMS ((char *));
552 static void pa_spaces_begin
PARAMS ((void));
555 static void hppa_elf_mark_end_of_function
PARAMS ((void));
556 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
559 /* File and gloally scoped variable declarations. */
561 /* Root and final entry in the space chain. */
562 static sd_chain_struct
*space_dict_root
;
563 static sd_chain_struct
*space_dict_last
;
565 /* The current space and subspace. */
566 static sd_chain_struct
*current_space
;
567 static ssd_chain_struct
*current_subspace
;
569 /* Root of the call_info chain. */
570 static struct call_info
*call_info_root
;
572 /* The last call_info (for functions) structure
573 seen so it can be associated with fixups and
575 static struct call_info
*last_call_info
;
577 /* The last call description (for actual calls). */
578 static struct call_desc last_call_desc
;
580 /* Jumps are always the same size -- one instruction. */
581 int md_short_jump_size
= 4;
582 int md_long_jump_size
= 4;
584 /* handle of the OPCODE hash table */
585 static struct hash_control
*op_hash
= NULL
;
587 /* This array holds the chars that always start a comment. If the
588 pre-processor is disabled, these aren't very useful. */
589 const char comment_chars
[] = ";";
591 /* Table of pseudo ops for the PA. FIXME -- how many of these
592 are now redundant with the overall GAS and the object file
594 const pseudo_typeS md_pseudo_table
[] =
596 /* align pseudo-ops on the PA specify the actual alignment requested,
597 not the log2 of the requested alignment. */
598 {"align", pa_align
, 8},
599 {"begin_brtab", pa_brtab
, 1},
600 {"begin_try", pa_try
, 1},
601 {"block", pa_block
, 1},
602 {"blockz", pa_block
, 0},
603 {"byte", pa_cons
, 1},
604 {"call", pa_call
, 0},
605 {"callinfo", pa_callinfo
, 0},
606 {"code", pa_code
, 0},
607 {"comm", pa_comm
, 0},
608 {"copyright", pa_copyright
, 0},
609 {"data", pa_data
, 0},
610 {"double", pa_float_cons
, 'd'},
612 {"end_brtab", pa_brtab
, 0},
613 {"end_try", pa_try
, 0},
614 {"enter", pa_enter
, 0},
615 {"entry", pa_entry
, 0},
617 {"exit", pa_exit
, 0},
618 {"export", pa_export
, 0},
619 {"fill", pa_fill
, 0},
620 {"float", pa_float_cons
, 'f'},
621 {"half", pa_cons
, 2},
622 {"import", pa_import
, 0},
624 {"label", pa_label
, 0},
625 {"lcomm", pa_lcomm
, 0},
626 {"leave", pa_leave
, 0},
627 {"level", pa_level
, 0},
628 {"long", pa_cons
, 4},
629 {"lsym", pa_lsym
, 0},
630 {"nsubspa", pa_subspace
, 1},
631 {"octa", pa_cons
, 16},
632 {"org", pa_origin
, 0},
633 {"origin", pa_origin
, 0},
634 {"param", pa_param
, 0},
635 {"proc", pa_proc
, 0},
636 {"procend", pa_procend
, 0},
637 {"quad", pa_cons
, 8},
639 {"short", pa_cons
, 2},
640 {"single", pa_float_cons
, 'f'},
641 {"space", pa_space
, 0},
642 {"spnum", pa_spnum
, 0},
643 {"string", pa_stringer
, 0},
644 {"stringz", pa_stringer
, 1},
645 {"subspa", pa_subspace
, 0},
646 {"text", pa_text
, 0},
647 {"version", pa_version
, 0},
648 {"word", pa_cons
, 4},
652 /* This array holds the chars that only start a comment at the beginning of
653 a line. If the line seems to have the form '# 123 filename'
654 .line and .file directives will appear in the pre-processed output.
656 Note that input_file.c hand checks for '#' at the beginning of the
657 first line of the input file. This is because the compiler outputs
658 #NO_APP at the beginning of its output.
660 Also note that C style comments will always work. */
661 const char line_comment_chars
[] = "#";
663 /* This array holds the characters which act as line separators. */
664 const char line_separator_chars
[] = "!";
666 /* Chars that can be used to separate mant from exp in floating point nums. */
667 const char EXP_CHARS
[] = "eE";
669 /* Chars that mean this number is a floating point constant.
670 As in 0f12.456 or 0d1.2345e12.
672 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
673 changed in read.c. Ideally it shouldn't hae to know abou it at
674 all, but nothing is ideal around here. */
675 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
677 static struct pa_it the_insn
;
679 /* Points to the end of an expression just parsed by get_expressoin
680 and friends. FIXME. This shouldn't be handled with a file-global
682 static char *expr_end
;
684 /* Nonzero if a .callinfo appeared within the current procedure. */
685 static int callinfo_found
;
687 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
688 static int within_entry_exit
;
690 /* Nonzero if the assembler is currently within a procedure definition. */
691 static int within_procedure
;
693 /* Handle on strucutre which keep track of the last symbol
694 seen in each subspace. */
695 static label_symbol_struct
*label_symbols_rootp
= NULL
;
697 /* Holds the last field selector. */
698 static int hppa_field_selector
;
700 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
701 static symbolS
*dummy_symbol
;
703 /* Nonzero if errors are to be printed. */
704 static int print_errors
= 1;
706 /* List of registers that are pre-defined:
708 Each general register has one predefined name of the form
709 %r<REGNUM> which has the value <REGNUM>.
711 Space and control registers are handled in a similar manner,
712 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
714 Likewise for the floating point registers, but of the form
715 %fr<REGNUM>. Floating point registers have additional predefined
716 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
717 again have the value <REGNUM>.
719 Many registers also have synonyms:
721 %r26 - %r23 have %arg0 - %arg3 as synonyms
722 %r28 - %r29 have %ret0 - %ret1 as synonyms
723 %r30 has %sp as a synonym
724 %r27 has %dp as a synonym
725 %r2 has %rp as a synonym
727 Almost every control register has a synonym; they are not listed
730 The table is sorted. Suitable for searching by a binary search. */
732 static const struct pd_reg pre_defined_registers
[] =
932 /* This table is sorted by order of the length of the string. This is
933 so we check for <> before we check for <. If we had a <> and checked
934 for < first, we would get a false match. */
935 static const struct fp_cond_map fp_cond_map
[] =
971 static const struct selector_entry selector_table
[] =
993 /* default space and subspace dictionaries */
995 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
996 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
998 /* pre-defined subsegments (subspaces) for the HPPA. */
999 #define SUBSEG_CODE 0
1000 #define SUBSEG_LIT 1
1001 #define SUBSEG_MILLI 2
1002 #define SUBSEG_DATA 0
1003 #define SUBSEG_BSS 2
1004 #define SUBSEG_UNWIND 3
1005 #define SUBSEG_GDB_STRINGS 0
1006 #define SUBSEG_GDB_SYMBOLS 1
1008 static struct default_subspace_dict pa_def_subspaces
[] =
1010 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1011 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1012 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1013 {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_MILLI
},
1014 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1016 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND
},
1018 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1021 static struct default_space_dict pa_def_spaces
[] =
1023 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1024 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1025 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1028 /* Misc local definitions used by the assembler. */
1030 /* Return nonzero if the string pointed to by S potentially represents
1031 a right or left half of a FP register */
1032 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1033 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1035 /* These macros are used to maintain spaces/subspaces. */
1036 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1037 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1038 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1039 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1041 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1042 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1044 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1045 main loop after insertion. */
1047 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1049 ((OPCODE) |= (FIELD) << (START)); \
1053 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1054 IGNORE is used to suppress the error message. */
1056 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1058 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1061 as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \
1067 #define is_DP_relative(exp) \
1068 ((exp).X_op == O_subtract \
1069 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1071 #define is_PC_relative(exp) \
1072 ((exp).X_op == O_subtract \
1073 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1075 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1076 always be able to reduce the expression to a constant, so we don't
1077 need real complex handling yet. */
1078 #define is_complex(exp) \
1079 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1081 /* Actual functions to implement the PA specific code for the assembler. */
1083 /* Called before writing the object file. Make sure entry/exit and
1084 proc/procend pairs match. */
1089 if (within_entry_exit
)
1090 as_fatal (_("Missing .exit\n"));
1092 if (within_procedure
)
1093 as_fatal (_("Missing .procend\n"));
1096 /* Check to make sure we have a valid space and subspace. */
1099 pa_check_current_space_and_subspace ()
1101 if (current_space
== NULL
)
1102 as_fatal (_("Not in a space.\n"));
1104 if (current_subspace
== NULL
)
1105 as_fatal (_("Not in a subspace.\n"));
1108 /* Returns a pointer to the label_symbol_struct for the current space.
1109 or NULL if no label_symbol_struct exists for the current space. */
1111 static label_symbol_struct
*
1114 label_symbol_struct
*label_chain
;
1115 sd_chain_struct
*space_chain
= current_space
;
1117 for (label_chain
= label_symbols_rootp
;
1119 label_chain
= label_chain
->lss_next
)
1120 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1126 /* Defines a label for the current space. If one is already defined,
1127 this function will replace it with the new label. */
1130 pa_define_label (symbol
)
1133 label_symbol_struct
*label_chain
= pa_get_label ();
1134 sd_chain_struct
*space_chain
= current_space
;
1137 label_chain
->lss_label
= symbol
;
1140 /* Create a new label entry and add it to the head of the chain. */
1142 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1143 label_chain
->lss_label
= symbol
;
1144 label_chain
->lss_space
= space_chain
;
1145 label_chain
->lss_next
= NULL
;
1147 if (label_symbols_rootp
)
1148 label_chain
->lss_next
= label_symbols_rootp
;
1150 label_symbols_rootp
= label_chain
;
1154 /* Removes a label definition for the current space.
1155 If there is no label_symbol_struct entry, then no action is taken. */
1158 pa_undefine_label ()
1160 label_symbol_struct
*label_chain
;
1161 label_symbol_struct
*prev_label_chain
= NULL
;
1162 sd_chain_struct
*space_chain
= current_space
;
1164 for (label_chain
= label_symbols_rootp
;
1166 label_chain
= label_chain
->lss_next
)
1168 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1170 /* Remove the label from the chain and free its memory. */
1171 if (prev_label_chain
)
1172 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1174 label_symbols_rootp
= label_chain
->lss_next
;
1179 prev_label_chain
= label_chain
;
1184 /* An HPPA-specific version of fix_new. This is required because the HPPA
1185 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1186 results in the creation of an instance of an hppa_fix_struct. An
1187 hppa_fix_struct stores the extra information along with a pointer to the
1188 original fixS. This is attached to the original fixup via the
1189 tc_fix_data field. */
1192 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1193 r_type
, r_field
, r_format
, arg_reloc
, unwind_bits
)
1197 symbolS
*add_symbol
;
1201 bfd_reloc_code_real_type r_type
;
1202 enum hppa_reloc_field_selector_type_alt r_field
;
1209 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1210 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1213 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1215 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1216 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1217 hppa_fix
->fx_r_type
= r_type
;
1218 hppa_fix
->fx_r_field
= r_field
;
1219 hppa_fix
->fx_r_format
= r_format
;
1220 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1221 hppa_fix
->segment
= now_seg
;
1223 if (r_type
== R_ENTRY
|| r_type
== R_EXIT
)
1224 new_fix
->fx_offset
= *unwind_bits
;
1227 /* foo-$global$ is used to access non-automatic storage. $global$
1228 is really just a marker and has served its purpose, so eliminate
1229 it now so as not to confuse write.c. */
1230 if (new_fix
->fx_subsy
1231 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1232 new_fix
->fx_subsy
= NULL
;
1235 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1236 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1239 parse_cons_expression_hppa (exp
)
1242 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1246 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1247 hppa_field_selector is set by the parse_cons_expression_hppa. */
1250 cons_fix_new_hppa (frag
, where
, size
, exp
)
1256 unsigned int rel_type
;
1258 /* Get a base relocation type. */
1259 if (is_DP_relative (*exp
))
1260 rel_type
= R_HPPA_GOTOFF
;
1261 else if (is_complex (*exp
))
1262 rel_type
= R_HPPA_COMPLEX
;
1266 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1267 as_warn (_("Invalid field selector. Assuming F%%."));
1269 fix_new_hppa (frag
, where
, size
,
1270 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1271 hppa_field_selector
, 32, 0, NULL
);
1273 /* Reset field selector to its default state. */
1274 hppa_field_selector
= 0;
1277 /* This function is called once, at assembler startup time. It should
1278 set up all the tables, etc. that the MD part of the assembler will need. */
1283 const char *retval
= NULL
;
1287 last_call_info
= NULL
;
1288 call_info_root
= NULL
;
1290 /* Set the default machine type. */
1291 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, 10))
1292 as_warn (_("could not set architecture and machine"));
1294 /* Folding of text and data segments fails miserably on the PA.
1295 Warn user and disable "-R" option. */
1296 if (flag_readonly_data_in_text
)
1298 as_warn (_("-R option not supported on this target."));
1299 flag_readonly_data_in_text
= 0;
1304 op_hash
= hash_new ();
1306 while (i
< NUMOPCODES
)
1308 const char *name
= pa_opcodes
[i
].name
;
1309 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1310 if (retval
!= NULL
&& *retval
!= '\0')
1312 as_fatal (_("Internal error: can't hash `%s': %s\n"), name
, retval
);
1317 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1318 != pa_opcodes
[i
].match
)
1320 fprintf (stderr
, _("internal error: losing opcode: `%s' \"%s\"\n"),
1321 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1326 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1330 as_fatal (_("Broken assembler. No assembly attempted."));
1332 /* SOM will change text_section. To make sure we never put
1333 anything into the old one switch to the new one now. */
1334 subseg_set (text_section
, 0);
1336 dummy_symbol
= symbol_find_or_make ("L$dummy");
1337 S_SET_SEGMENT (dummy_symbol
, text_section
);
1340 /* Assemble a single instruction storing it into a frag. */
1347 /* The had better be something to assemble. */
1350 /* If we are within a procedure definition, make sure we've
1351 defined a label for the procedure; handle case where the
1352 label was defined after the .PROC directive.
1354 Note there's not need to diddle with the segment or fragment
1355 for the label symbol in this case. We have already switched
1356 into the new $CODE$ subspace at this point. */
1357 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1359 label_symbol_struct
*label_symbol
= pa_get_label ();
1363 if (label_symbol
->lss_label
)
1365 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1366 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1368 /* Also handle allocation of a fixup to hold the unwind
1369 information when the label appears after the proc/procend. */
1370 if (within_entry_exit
)
1372 char *where
= frag_more (0);
1374 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1375 NULL
, (offsetT
) 0, NULL
,
1376 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1377 (int *)&last_call_info
->ci_unwind
.descriptor
);
1382 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
1385 as_bad (_("Missing function name for .PROC"));
1388 /* Assemble the instruction. Results are saved into "the_insn". */
1391 /* Get somewhere to put the assembled instrution. */
1394 /* Output the opcode. */
1395 md_number_to_chars (to
, the_insn
.opcode
, 4);
1397 /* If necessary output more stuff. */
1398 if (the_insn
.reloc
!= R_HPPA_NONE
)
1399 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1400 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1401 the_insn
.reloc
, the_insn
.field_selector
,
1402 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1405 /* Do the real work for assembling a single instruction. Store results
1406 into the global "the_insn" variable. */
1412 char *error_message
= "";
1413 char *s
, c
, *argstart
, *name
, *save_s
;
1417 int cmpltr
, nullif
, flag
, cond
, num
;
1418 unsigned long opcode
;
1419 struct pa_opcode
*insn
;
1421 /* We must have a valid space and subspace. */
1422 pa_check_current_space_and_subspace ();
1424 /* Skip to something interesting. */
1425 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1444 as_fatal (_("Unknown opcode: `%s'"), str
);
1449 /* Convert everything into lower case. */
1452 if (isupper (*save_s
))
1453 *save_s
= tolower (*save_s
);
1457 /* Look up the opcode in the has table. */
1458 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1460 as_bad ("Unknown opcode: `%s'", str
);
1469 /* Mark the location where arguments for the instruction start, then
1470 start processing them. */
1474 /* Do some initialization. */
1475 opcode
= insn
->match
;
1476 bzero (&the_insn
, sizeof (the_insn
));
1478 the_insn
.reloc
= R_HPPA_NONE
;
1480 /* If this instruction is specific to a particular architecture,
1481 then set a new architecture. */
1482 if (bfd_get_mach (stdoutput
) < insn
->arch
)
1484 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, insn
->arch
))
1485 as_warn (_("could not update architecture and machine"));
1488 /* Build the opcode, checking as we go to make
1489 sure that the operands match. */
1490 for (args
= insn
->args
;; ++args
)
1495 /* End of arguments. */
1511 /* These must match exactly. */
1520 /* Handle a 5 bit register or control register field at 10. */
1523 num
= pa_parse_number (&s
, 0);
1524 CHECK_FIELD (num
, 31, 0, 0);
1525 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1527 /* Handle a 5 bit register field at 15. */
1529 num
= pa_parse_number (&s
, 0);
1530 CHECK_FIELD (num
, 31, 0, 0);
1531 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1533 /* Handle a 5 bit register field at 31. */
1536 num
= pa_parse_number (&s
, 0);
1537 CHECK_FIELD (num
, 31, 0, 0);
1538 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1540 /* Handle a 5 bit field length at 31. */
1542 num
= pa_get_absolute_expression (&the_insn
, &s
);
1544 CHECK_FIELD (num
, 32, 1, 0);
1545 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1547 /* Handle a 5 bit immediate at 15. */
1549 num
= pa_get_absolute_expression (&the_insn
, &s
);
1551 CHECK_FIELD (num
, 15, -16, 0);
1552 low_sign_unext (num
, 5, &num
);
1553 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1555 /* Handle a 5 bit immediate at 31. */
1557 num
= pa_get_absolute_expression (&the_insn
, &s
);
1559 CHECK_FIELD (num
, 15, -16, 0)
1560 low_sign_unext (num
, 5, &num
);
1561 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1563 /* Handle an unsigned 5 bit immediate at 31. */
1565 num
= pa_get_absolute_expression (&the_insn
, &s
);
1567 CHECK_FIELD (num
, 31, 0, 0);
1568 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1570 /* Handle an unsigned 5 bit immediate at 15. */
1572 num
= pa_get_absolute_expression (&the_insn
, &s
);
1574 CHECK_FIELD (num
, 31, 0, 0);
1575 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1577 /* Handle a 2 bit space identifier at 17. */
1579 num
= pa_parse_number (&s
, 0);
1580 CHECK_FIELD (num
, 3, 0, 1);
1581 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1583 /* Handle a 3 bit space identifier at 18. */
1585 num
= pa_parse_number (&s
, 0);
1586 CHECK_FIELD (num
, 7, 0, 1);
1587 dis_assemble_3 (num
, &num
);
1588 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1590 /* Handle a completer for an indexing load or store. */
1596 while (*s
== ',' && i
< 2)
1599 if (strncasecmp (s
, "sm", 2) == 0)
1606 else if (strncasecmp (s
, "m", 1) == 0)
1608 else if (strncasecmp (s
, "s", 1) == 0)
1611 as_bad (_("Invalid Indexed Load Completer."));
1616 as_bad (_("Invalid Indexed Load Completer Syntax."));
1618 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1621 /* Handle a short load/store completer. */
1629 if (strncasecmp (s
, "ma", 2) == 0)
1634 else if (strncasecmp (s
, "mb", 2) == 0)
1640 as_bad (_("Invalid Short Load/Store Completer."));
1644 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1647 /* Handle a stbys completer. */
1653 while (*s
== ',' && i
< 2)
1656 if (strncasecmp (s
, "m", 1) == 0)
1658 else if (strncasecmp (s
, "b", 1) == 0)
1660 else if (strncasecmp (s
, "e", 1) == 0)
1663 as_bad (_("Invalid Store Bytes Short Completer"));
1668 as_bad (_("Invalid Store Bytes Short Completer"));
1670 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1673 /* Handle a non-negated compare/stubtract condition. */
1675 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1678 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s
);
1681 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1683 /* Handle a negated or non-negated compare/subtract condition. */
1686 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1690 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1693 as_bad (_("Invalid Compare/Subtract Condition."));
1698 /* Negated condition requires an opcode change. */
1702 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1704 /* Handle non-negated add condition. */
1706 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1709 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s
);
1712 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1714 /* Handle a negated or non-negated add condition. */
1717 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1721 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1724 as_bad (_("Invalid Compare/Subtract Condition"));
1729 /* Negated condition requires an opcode change. */
1733 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1735 /* Handle a compare/subtract condition. */
1742 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1747 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1750 as_bad (_("Invalid Compare/Subtract Condition"));
1754 opcode
|= cmpltr
<< 13;
1755 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1757 /* Handle a non-negated add condition. */
1766 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1770 if (strcmp (name
, "=") == 0)
1772 else if (strcmp (name
, "<") == 0)
1774 else if (strcmp (name
, "<=") == 0)
1776 else if (strcasecmp (name
, "nuv") == 0)
1778 else if (strcasecmp (name
, "znv") == 0)
1780 else if (strcasecmp (name
, "sv") == 0)
1782 else if (strcasecmp (name
, "od") == 0)
1784 else if (strcasecmp (name
, "n") == 0)
1786 else if (strcasecmp (name
, "tr") == 0)
1791 else if (strcmp (name
, "<>") == 0)
1796 else if (strcmp (name
, ">=") == 0)
1801 else if (strcmp (name
, ">") == 0)
1806 else if (strcasecmp (name
, "uv") == 0)
1811 else if (strcasecmp (name
, "vnz") == 0)
1816 else if (strcasecmp (name
, "nsv") == 0)
1821 else if (strcasecmp (name
, "ev") == 0)
1827 as_bad (_("Invalid Add Condition: %s"), name
);
1830 nullif
= pa_parse_nullif (&s
);
1831 opcode
|= nullif
<< 1;
1832 opcode
|= cmpltr
<< 13;
1833 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1835 /* HANDLE a logical instruction condition. */
1843 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1847 if (strcmp (name
, "=") == 0)
1849 else if (strcmp (name
, "<") == 0)
1851 else if (strcmp (name
, "<=") == 0)
1853 else if (strcasecmp (name
, "od") == 0)
1855 else if (strcasecmp (name
, "tr") == 0)
1860 else if (strcmp (name
, "<>") == 0)
1865 else if (strcmp (name
, ">=") == 0)
1870 else if (strcmp (name
, ">") == 0)
1875 else if (strcasecmp (name
, "ev") == 0)
1881 as_bad (_("Invalid Logical Instruction Condition."));
1884 opcode
|= cmpltr
<< 13;
1885 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1887 /* Handle a unit instruction condition. */
1894 if (strncasecmp (s
, "sbz", 3) == 0)
1899 else if (strncasecmp (s
, "shz", 3) == 0)
1904 else if (strncasecmp (s
, "sdc", 3) == 0)
1909 else if (strncasecmp (s
, "sbc", 3) == 0)
1914 else if (strncasecmp (s
, "shc", 3) == 0)
1919 else if (strncasecmp (s
, "tr", 2) == 0)
1925 else if (strncasecmp (s
, "nbz", 3) == 0)
1931 else if (strncasecmp (s
, "nhz", 3) == 0)
1937 else if (strncasecmp (s
, "ndc", 3) == 0)
1943 else if (strncasecmp (s
, "nbc", 3) == 0)
1949 else if (strncasecmp (s
, "nhc", 3) == 0)
1956 as_bad (_("Invalid Logical Instruction Condition."));
1958 opcode
|= cmpltr
<< 13;
1959 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1961 /* Handle a shift/extract/deposit condition. */
1969 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1973 if (strcmp (name
, "=") == 0)
1975 else if (strcmp (name
, "<") == 0)
1977 else if (strcasecmp (name
, "od") == 0)
1979 else if (strcasecmp (name
, "tr") == 0)
1981 else if (strcmp (name
, "<>") == 0)
1983 else if (strcmp (name
, ">=") == 0)
1985 else if (strcasecmp (name
, "ev") == 0)
1987 /* Handle movb,n. Put things back the way they were.
1988 This includes moving s back to where it started. */
1989 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1996 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
1999 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2001 /* Handle bvb and bb conditions. */
2007 if (strncmp (s
, "<", 1) == 0)
2012 else if (strncmp (s
, ">=", 2) == 0)
2018 as_bad (_("Invalid Bit Branch Condition: %c"), *s
);
2020 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2022 /* Handle a system control completer. */
2024 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2032 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2034 /* Handle a nullification completer for branch instructions. */
2036 nullif
= pa_parse_nullif (&s
);
2037 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2039 /* Handle a nullification completer for copr and spop insns. */
2041 nullif
= pa_parse_nullif (&s
);
2042 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2044 /* Handle a 11 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
, 1023, -1024, 0);
2053 low_sign_unext (num
, 11, &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
;
2063 the_insn
.reloc
= R_HPPA
;
2064 the_insn
.format
= 11;
2068 /* Handle a 14 bit immediate at 31. */
2070 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2073 if (the_insn
.exp
.X_op
== O_constant
)
2075 num
= evaluate_absolute (&the_insn
);
2076 CHECK_FIELD (num
, 8191, -8192, 0);
2077 low_sign_unext (num
, 14, &num
);
2078 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2082 if (is_DP_relative (the_insn
.exp
))
2083 the_insn
.reloc
= R_HPPA_GOTOFF
;
2084 else if (is_PC_relative (the_insn
.exp
))
2085 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2087 the_insn
.reloc
= R_HPPA
;
2088 the_insn
.format
= 14;
2092 /* Handle a 21 bit immediate at 31. */
2094 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2097 if (the_insn
.exp
.X_op
== O_constant
)
2099 num
= evaluate_absolute (&the_insn
);
2100 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2101 dis_assemble_21 (num
, &num
);
2102 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2106 if (is_DP_relative (the_insn
.exp
))
2107 the_insn
.reloc
= R_HPPA_GOTOFF
;
2108 else if (is_PC_relative (the_insn
.exp
))
2109 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2111 the_insn
.reloc
= R_HPPA
;
2112 the_insn
.format
= 21;
2116 /* Handle a 12 bit branch displacement. */
2118 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2122 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2124 unsigned int w1
, w
, result
;
2126 num
= evaluate_absolute (&the_insn
);
2129 as_bad (_("Branch to unaligned address"));
2132 CHECK_FIELD (num
, 8199, -8184, 0);
2133 sign_unext ((num
- 8) >> 2, 12, &result
);
2134 dis_assemble_12 (result
, &w1
, &w
);
2135 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2139 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2140 the_insn
.format
= 12;
2141 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2142 bzero (&last_call_desc
, sizeof (struct call_desc
));
2147 /* Handle a 17 bit branch displacement. */
2149 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2153 if (!the_insn
.exp
.X_add_symbol
2154 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2157 unsigned int w2
, w1
, w
, result
;
2159 num
= evaluate_absolute (&the_insn
);
2162 as_bad (_("Branch to unaligned address"));
2165 CHECK_FIELD (num
, 262143, -262144, 0);
2167 if (the_insn
.exp
.X_add_symbol
)
2170 sign_unext (num
>> 2, 17, &result
);
2171 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2172 INSERT_FIELD_AND_CONTINUE (opcode
,
2173 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2177 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2178 the_insn
.format
= 17;
2179 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2180 bzero (&last_call_desc
, sizeof (struct call_desc
));
2184 /* Handle an absolute 17 bit branch target. */
2186 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2190 if (!the_insn
.exp
.X_add_symbol
2191 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2194 unsigned int w2
, w1
, w
, result
;
2196 num
= evaluate_absolute (&the_insn
);
2199 as_bad (_("Branch to unaligned address"));
2202 CHECK_FIELD (num
, 262143, -262144, 0);
2204 if (the_insn
.exp
.X_add_symbol
)
2207 sign_unext (num
>> 2, 17, &result
);
2208 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2209 INSERT_FIELD_AND_CONTINUE (opcode
,
2210 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2214 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2215 the_insn
.format
= 17;
2216 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2217 bzero (&last_call_desc
, sizeof (struct call_desc
));
2221 /* Handle a 5 bit shift count at 26. */
2223 num
= pa_get_absolute_expression (&the_insn
, &s
);
2225 CHECK_FIELD (num
, 31, 0, 0);
2226 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2228 /* Handle a 5 bit bit position at 26. */
2230 num
= pa_get_absolute_expression (&the_insn
, &s
);
2232 CHECK_FIELD (num
, 31, 0, 0);
2233 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2235 /* Handle a 5 bit immediate at 10. */
2237 num
= pa_get_absolute_expression (&the_insn
, &s
);
2239 CHECK_FIELD (num
, 31, 0, 0);
2240 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2242 /* Handle a 13 bit immediate at 18. */
2244 num
= pa_get_absolute_expression (&the_insn
, &s
);
2246 CHECK_FIELD (num
, 8191, 0, 0);
2247 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2249 /* Handle a 26 bit immediate at 31. */
2251 num
= pa_get_absolute_expression (&the_insn
, &s
);
2253 CHECK_FIELD (num
, 671108864, 0, 0);
2254 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2256 /* Handle a 3 bit SFU identifier at 25. */
2259 as_bad (_("Invalid SFU identifier"));
2260 num
= pa_get_absolute_expression (&the_insn
, &s
);
2262 CHECK_FIELD (num
, 7, 0, 0);
2263 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2265 /* Handle a 20 bit SOP field for spop0. */
2267 num
= pa_get_absolute_expression (&the_insn
, &s
);
2269 CHECK_FIELD (num
, 1048575, 0, 0);
2270 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2271 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2273 /* Handle a 15bit SOP field for spop1. */
2275 num
= pa_get_absolute_expression (&the_insn
, &s
);
2277 CHECK_FIELD (num
, 32767, 0, 0);
2278 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2280 /* Handle a 10bit SOP field for spop3. */
2282 num
= pa_get_absolute_expression (&the_insn
, &s
);
2284 CHECK_FIELD (num
, 1023, 0, 0);
2285 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2286 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2288 /* Handle a 15 bit SOP field for spop2. */
2290 num
= pa_get_absolute_expression (&the_insn
, &s
);
2292 CHECK_FIELD (num
, 32767, 0, 0);
2293 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2294 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2296 /* Handle a 3-bit co-processor ID field. */
2299 as_bad (_("Invalid COPR identifier"));
2300 num
= pa_get_absolute_expression (&the_insn
, &s
);
2302 CHECK_FIELD (num
, 7, 0, 0);
2303 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2305 /* Handle a 22bit SOP field for copr. */
2307 num
= pa_get_absolute_expression (&the_insn
, &s
);
2309 CHECK_FIELD (num
, 4194303, 0, 0);
2310 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2311 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2313 /* Handle a source FP operand format completer. */
2315 flag
= pa_parse_fp_format (&s
);
2316 the_insn
.fpof1
= flag
;
2317 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2319 /* Handle a destination FP operand format completer. */
2321 /* pa_parse_format needs the ',' prefix. */
2323 flag
= pa_parse_fp_format (&s
);
2324 the_insn
.fpof2
= flag
;
2325 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2327 /* Handle FP compare conditions. */
2329 cond
= pa_parse_fp_cmp_cond (&s
);
2330 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2332 /* Handle L/R register halves like 't'. */
2335 struct pa_11_fp_reg_struct result
;
2337 pa_parse_number (&s
, &result
);
2338 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2339 opcode
|= result
.number_part
;
2341 /* 0x30 opcodes are FP arithmetic operation opcodes
2342 and need to be turned into 0x38 opcodes. This
2343 is not necessary for loads/stores. */
2344 if (need_pa11_opcode (&the_insn
, &result
)
2345 && ((opcode
& 0xfc000000) == 0x30000000))
2348 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2351 /* Handle L/R register halves like 'b'. */
2354 struct pa_11_fp_reg_struct result
;
2356 pa_parse_number (&s
, &result
);
2357 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2358 opcode
|= result
.number_part
<< 21;
2359 if (need_pa11_opcode (&the_insn
, &result
))
2361 opcode
|= (result
.l_r_select
& 1) << 7;
2367 /* Handle L/R register halves like 'x'. */
2370 struct pa_11_fp_reg_struct result
;
2372 pa_parse_number (&s
, &result
);
2373 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2374 opcode
|= (result
.number_part
& 0x1f) << 16;
2375 if (need_pa11_opcode (&the_insn
, &result
))
2377 opcode
|= (result
.l_r_select
& 1) << 12;
2383 /* Handle a 5 bit register field at 10. */
2386 struct pa_11_fp_reg_struct result
;
2388 pa_parse_number (&s
, &result
);
2389 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2390 if (the_insn
.fpof1
== SGL
)
2392 if (result
.number_part
< 16)
2394 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2398 result
.number_part
&= 0xF;
2399 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2401 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2404 /* Handle a 5 bit register field at 15. */
2407 struct pa_11_fp_reg_struct result
;
2409 pa_parse_number (&s
, &result
);
2410 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2411 if (the_insn
.fpof1
== SGL
)
2413 if (result
.number_part
< 16)
2415 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2418 result
.number_part
&= 0xF;
2419 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2421 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2424 /* Handle a 5 bit register field at 31. */
2427 struct pa_11_fp_reg_struct result
;
2429 pa_parse_number (&s
, &result
);
2430 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2431 if (the_insn
.fpof1
== SGL
)
2433 if (result
.number_part
< 16)
2435 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2438 result
.number_part
&= 0xF;
2439 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2441 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2444 /* Handle a 5 bit register field at 20. */
2447 struct pa_11_fp_reg_struct result
;
2449 pa_parse_number (&s
, &result
);
2450 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2451 if (the_insn
.fpof1
== SGL
)
2453 if (result
.number_part
< 16)
2455 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2458 result
.number_part
&= 0xF;
2459 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2461 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2464 /* Handle a 5 bit register field at 25. */
2467 struct pa_11_fp_reg_struct result
;
2469 pa_parse_number (&s
, &result
);
2470 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2471 if (the_insn
.fpof1
== SGL
)
2473 if (result
.number_part
< 16)
2475 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2478 result
.number_part
&= 0xF;
2479 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2481 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2484 /* Handle a floating point operand format at 26.
2485 Only allows single and double precision. */
2487 flag
= pa_parse_fp_format (&s
);
2493 the_insn
.fpof1
= flag
;
2499 as_bad (_("Invalid Floating Point Operand Format."));
2509 /* Check if the args matched. */
2512 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2513 && !strcmp (insn
->name
, insn
[1].name
))
2521 as_bad (_("Invalid operands %s"), error_message
);
2528 the_insn
.opcode
= opcode
;
2531 /* Turn a string in input_line_pointer into a floating point constant of type
2532 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2533 emitted is stored in *sizeP . An error message or NULL is returned. */
2535 #define MAX_LITTLENUMS 6
2538 md_atof (type
, litP
, sizeP
)
2544 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2545 LITTLENUM_TYPE
*wordP
;
2577 return _("Bad call to MD_ATOF()");
2579 t
= atof_ieee (input_line_pointer
, type
, words
);
2581 input_line_pointer
= t
;
2582 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2583 for (wordP
= words
; prec
--;)
2585 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2586 litP
+= sizeof (LITTLENUM_TYPE
);
2591 /* Write out big-endian. */
2594 md_number_to_chars (buf
, val
, n
)
2599 number_to_chars_bigendian (buf
, val
, n
);
2602 /* Translate internal representation of relocation info to BFD target
2606 tc_gen_reloc (section
, fixp
)
2611 struct hppa_fix_struct
*hppa_fixp
;
2612 bfd_reloc_code_real_type code
;
2613 static arelent
*no_relocs
= NULL
;
2615 bfd_reloc_code_real_type
**codes
;
2619 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2620 if (fixp
->fx_addsy
== 0)
2622 assert (hppa_fixp
!= 0);
2623 assert (section
!= 0);
2625 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
2627 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2628 codes
= (bfd_reloc_code_real_type
**) hppa_gen_reloc_type (stdoutput
,
2630 hppa_fixp
->fx_r_format
,
2631 hppa_fixp
->fx_r_field
,
2632 fixp
->fx_subsy
!= NULL
,
2633 fixp
->fx_addsy
->bsym
);
2638 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2641 relocs
= (arelent
**) xmalloc (sizeof (arelent
*) * n_relocs
+ 1);
2642 reloc
= (arelent
*) xmalloc (sizeof (arelent
) * n_relocs
);
2643 for (i
= 0; i
< n_relocs
; i
++)
2644 relocs
[i
] = &reloc
[i
];
2646 relocs
[n_relocs
] = NULL
;
2649 switch (fixp
->fx_r_type
)
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_PARISC_DLTREL21L
:
2667 case R_PARISC_DLTREL14R
:
2668 case R_PARISC_DLTREL14F
:
2669 case R_PARISC_PLABEL32
:
2670 case R_PARISC_PLABEL21L
:
2671 case R_PARISC_PLABEL14R
:
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!
2678 We also slam a zero addend into the DLT relative relocs;
2679 it doesn't make a lot of sense to use any addend since
2680 it gets you a different (eg unknown) DLT entry. */
2684 case R_PARISC_PCREL21L
:
2685 case R_PARISC_PCREL17R
:
2686 case R_PARISC_PCREL17F
:
2687 case R_PARISC_PCREL17C
:
2688 case R_PARISC_PCREL14R
:
2689 case R_PARISC_PCREL14F
:
2690 /* The constant is stored in the instruction. */
2691 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2694 reloc
->addend
= fixp
->fx_offset
;
2701 /* Walk over reach relocation returned by the BFD backend. */
2702 for (i
= 0; i
< n_relocs
; i
++)
2706 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2707 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2708 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2713 /* The only time we ever use a R_COMP2 fixup is for the difference
2714 of two symbols. With that in mind we fill in all four
2715 relocs now and break out of the loop. */
2717 relocs
[0]->sym_ptr_ptr
= &bfd_abs_symbol
;
2718 relocs
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[0]);
2719 relocs
[0]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2720 relocs
[0]->addend
= 0;
2721 relocs
[1]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2722 relocs
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[1]);
2723 relocs
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2724 relocs
[1]->addend
= 0;
2725 relocs
[2]->sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2726 relocs
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[2]);
2727 relocs
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2728 relocs
[2]->addend
= 0;
2729 relocs
[3]->sym_ptr_ptr
= &bfd_abs_symbol
;
2730 relocs
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[3]);
2731 relocs
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2732 relocs
[3]->addend
= 0;
2733 relocs
[4]->sym_ptr_ptr
= &bfd_abs_symbol
;
2734 relocs
[4]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[4]);
2735 relocs
[4]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2736 relocs
[4]->addend
= 0;
2740 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!
2752 We also slam a zero addend into the DLT relative relocs;
2753 it doesn't make a lot of sense to use any addend since
2754 it gets you a different (eg unknown) DLT entry. */
2755 relocs
[i
]->addend
= 0;
2770 /* There is no symbol or addend associated with these fixups. */
2771 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2772 relocs
[i
]->addend
= 0;
2778 /* There is no symbol associated with these fixups. */
2779 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2780 relocs
[i
]->addend
= fixp
->fx_offset
;
2784 relocs
[i
]->addend
= fixp
->fx_offset
;
2794 /* Process any machine dependent frag types. */
2797 md_convert_frag (abfd
, sec
, fragP
)
2799 register asection
*sec
;
2800 register fragS
*fragP
;
2802 unsigned int address
;
2804 if (fragP
->fr_type
== rs_machine_dependent
)
2806 switch ((int) fragP
->fr_subtype
)
2809 fragP
->fr_type
= rs_fill
;
2810 know (fragP
->fr_var
== 1);
2811 know (fragP
->fr_next
);
2812 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2813 if (address
% fragP
->fr_offset
)
2816 fragP
->fr_next
->fr_address
2821 fragP
->fr_offset
= 0;
2827 /* Round up a section size to the appropriate boundary. */
2830 md_section_align (segment
, size
)
2834 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2835 int align2
= (1 << align
) - 1;
2837 return (size
+ align2
) & ~align2
;
2840 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2842 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2844 addressT from_addr
, to_addr
;
2848 fprintf (stderr
, _("pa_create_short_jmp\n"));
2852 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2854 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2856 addressT from_addr
, to_addr
;
2860 fprintf (stderr
, _("pa_create_long_jump\n"));
2864 /* Return the approximate size of a frag before relaxation has occurred. */
2866 md_estimate_size_before_relax (fragP
, segment
)
2867 register fragS
*fragP
;
2874 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2880 CONST
char *md_shortopts
= "";
2881 struct option md_longopts
[] = {
2882 {NULL
, no_argument
, NULL
, 0}
2884 size_t md_longopts_size
= sizeof(md_longopts
);
2887 md_parse_option (c
, arg
)
2895 md_show_usage (stream
)
2900 /* We have no need to default values of symbols. */
2903 md_undefined_symbol (name
)
2909 /* Apply a fixup to an instruction. */
2912 md_apply_fix (fixP
, valp
)
2916 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2917 struct hppa_fix_struct
*hppa_fixP
;
2918 long new_val
, result
= 0;
2919 unsigned int w1
, w2
, w
, resulti
;
2921 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2922 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2923 never be "applied" (they are just markers). Likewise for
2924 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
2926 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2927 || fixP
->fx_r_type
== R_HPPA_EXIT
2928 || fixP
->fx_r_type
== R_HPPA_BEGIN_BRTAB
2929 || fixP
->fx_r_type
== R_HPPA_END_BRTAB
2930 || fixP
->fx_r_type
== R_HPPA_BEGIN_TRY
)
2933 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
2934 fixups are considered not adjustable, which in turn causes
2935 adjust_reloc_syms to not set fx_offset. Ugh. */
2936 if (fixP
->fx_r_type
== R_HPPA_END_TRY
)
2938 fixP
->fx_offset
= *valp
;
2943 /* There should have been an HPPA specific fixup associated
2944 with the GAS fixup. */
2947 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2948 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2950 /* If there is a symbol associated with this fixup, then it's something
2951 which will need a SOM relocation (except for some PC-relative relocs).
2952 In such cases we should treat the "val" or "addend" as zero since it
2953 will be added in as needed from fx_offset in tc_gen_reloc. */
2954 if ((fixP
->fx_addsy
!= NULL
2955 || fixP
->fx_r_type
== R_HPPA_NONE
)
2958 || hppa_fixP
->fx_r_field
== e_psel
2959 || hppa_fixP
->fx_r_field
== e_rpsel
2960 || hppa_fixP
->fx_r_field
== e_lpsel
2961 || hppa_fixP
->fx_r_field
== e_tsel
2962 || hppa_fixP
->fx_r_field
== e_rtsel
2963 || hppa_fixP
->fx_r_field
== e_ltsel
2966 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2968 /* This is truely disgusting. The machine independent code blindly
2969 adds in the value of the symbol being relocated against. Damn! */
2971 && fixP
->fx_addsy
!= NULL
2972 && S_GET_SEGMENT (fixP
->fx_addsy
) != bfd_com_section_ptr
)
2973 new_val
= hppa_field_adjust (*valp
- S_GET_VALUE (fixP
->fx_addsy
),
2974 0, hppa_fixP
->fx_r_field
);
2977 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2979 /* Handle pc-relative exceptions from above. */
2980 #define arg_reloc_stub_needed(CALLER, CALLEE) \
2981 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2982 if ((fmt
== 12 || fmt
== 17)
2985 && !arg_reloc_stub_needed (((obj_symbol_type
*)
2986 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2987 hppa_fixP
->fx_arg_reloc
)
2988 && ((int)(*valp
) > -262144 && (int)(*valp
) < 262143)
2989 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2991 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2993 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2994 #undef arg_reloc_stub_needed
2998 /* Handle all opcodes with the 'j' operand type. */
3000 CHECK_FIELD (new_val
, 8191, -8192, 0);
3002 /* Mask off 14 bits to be changed. */
3003 bfd_put_32 (stdoutput
,
3004 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3006 low_sign_unext (new_val
, 14, &resulti
);
3010 /* Handle all opcodes with the 'k' operand type. */
3012 CHECK_FIELD (new_val
, 2097152, 0, 0);
3014 /* Mask off 21 bits to be changed. */
3015 bfd_put_32 (stdoutput
,
3016 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3018 dis_assemble_21 (new_val
, &resulti
);
3022 /* Handle all the opcodes with the 'i' operand type. */
3024 CHECK_FIELD (new_val
, 1023, -1023, 0);
3026 /* Mask off 11 bits to be changed. */
3027 bfd_put_32 (stdoutput
,
3028 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3030 low_sign_unext (new_val
, 11, &resulti
);
3034 /* Handle all the opcodes with the 'w' operand type. */
3036 CHECK_FIELD (new_val
, 8199, -8184, 0);
3038 /* Mask off 11 bits to be changed. */
3039 sign_unext ((new_val
- 8) >> 2, 12, &resulti
);
3040 bfd_put_32 (stdoutput
,
3041 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3044 dis_assemble_12 (resulti
, &w1
, &w
);
3045 result
= ((w1
<< 2) | w
);
3048 /* Handle some of the opcodes with the 'W' operand type. */
3051 int distance
= *valp
;
3053 CHECK_FIELD (new_val
, 262143, -262144, 0);
3055 /* If this is an absolute branch (ie no link) with an out of
3056 range target, then we want to complain. */
3057 if (fixP
->fx_r_type
== R_HPPA_PCREL_CALL
3058 && (distance
> 262143 || distance
< -262144)
3059 && (bfd_get_32 (stdoutput
, buf
) & 0xffe00000) == 0xe8000000)
3060 CHECK_FIELD (distance
, 262143, -262144, 0);
3062 /* Mask off 17 bits to be changed. */
3063 bfd_put_32 (stdoutput
,
3064 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3066 sign_unext ((new_val
- 8) >> 2, 17, &resulti
);
3067 dis_assemble_17 (resulti
, &w1
, &w2
, &w
);
3068 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3074 bfd_put_32 (stdoutput
, new_val
, buf
);
3078 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3082 /* Insert the relocation. */
3083 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3088 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3089 (unsigned int) fixP
, fixP
->fx_r_type
);
3094 /* Exactly what point is a PC-relative offset relative TO?
3095 On the PA, they're relative to the address of the offset. */
3098 md_pcrel_from (fixP
)
3101 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3104 /* Return nonzero if the input line pointer is at the end of
3108 is_end_of_statement ()
3110 return ((*input_line_pointer
== '\n')
3111 || (*input_line_pointer
== ';')
3112 || (*input_line_pointer
== '!'));
3115 /* Read a number from S. The number might come in one of many forms,
3116 the most common will be a hex or decimal constant, but it could be
3117 a pre-defined register (Yuk!), or an absolute symbol.
3119 Return a number or -1 for failure.
3121 When parsing PA-89 FP register numbers RESULT will be
3122 the address of a structure to return information about
3123 L/R half of FP registers, store results there as appropriate.
3125 pa_parse_number can not handle negative constants and will fail
3126 horribly if it is passed such a constant. */
3129 pa_parse_number (s
, result
)
3131 struct pa_11_fp_reg_struct
*result
;
3140 /* Skip whitespace before the number. */
3141 while (*p
== ' ' || *p
== '\t')
3144 /* Store info in RESULT if requested by caller. */
3147 result
->number_part
= -1;
3148 result
->l_r_select
= -1;
3154 /* Looks like a number. */
3157 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3159 /* The number is specified in hex. */
3161 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3162 || ((*p
>= 'A') && (*p
<= 'F')))
3165 num
= num
* 16 + *p
- '0';
3166 else if (*p
>= 'a' && *p
<= 'f')
3167 num
= num
* 16 + *p
- 'a' + 10;
3169 num
= num
* 16 + *p
- 'A' + 10;
3175 /* The number is specified in decimal. */
3176 while (isdigit (*p
))
3178 num
= num
* 10 + *p
- '0';
3183 /* Store info in RESULT if requested by the caller. */
3186 result
->number_part
= num
;
3188 if (IS_R_SELECT (p
))
3190 result
->l_r_select
= 1;
3193 else if (IS_L_SELECT (p
))
3195 result
->l_r_select
= 0;
3199 result
->l_r_select
= 0;
3204 /* The number might be a predefined register. */
3209 /* Tege hack: Special case for general registers as the general
3210 code makes a binary search with case translation, and is VERY
3215 if (*p
== 'e' && *(p
+ 1) == 't'
3216 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3219 num
= *p
- '0' + 28;
3227 else if (!isdigit (*p
))
3230 as_bad (_("Undefined register: '%s'."), name
);
3236 num
= num
* 10 + *p
++ - '0';
3237 while (isdigit (*p
));
3242 /* Do a normal register search. */
3243 while (is_part_of_name (c
))
3249 status
= reg_name_search (name
);
3255 as_bad (_("Undefined register: '%s'."), name
);
3261 /* Store info in RESULT if requested by caller. */
3264 result
->number_part
= num
;
3265 if (IS_R_SELECT (p
- 1))
3266 result
->l_r_select
= 1;
3267 else if (IS_L_SELECT (p
- 1))
3268 result
->l_r_select
= 0;
3270 result
->l_r_select
= 0;
3275 /* And finally, it could be a symbol in the absolute section which
3276 is effectively a constant. */
3280 while (is_part_of_name (c
))
3286 if ((sym
= symbol_find (name
)) != NULL
)
3288 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3289 num
= S_GET_VALUE (sym
);
3293 as_bad (_("Non-absolute symbol: '%s'."), name
);
3299 /* There is where we'd come for an undefined symbol
3300 or for an empty string. For an empty string we
3301 will return zero. That's a concession made for
3302 compatability with the braindamaged HP assemblers. */
3308 as_bad (_("Undefined absolute constant: '%s'."), name
);
3314 /* Store info in RESULT if requested by caller. */
3317 result
->number_part
= num
;
3318 if (IS_R_SELECT (p
- 1))
3319 result
->l_r_select
= 1;
3320 else if (IS_L_SELECT (p
- 1))
3321 result
->l_r_select
= 0;
3323 result
->l_r_select
= 0;
3331 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3333 /* Given NAME, find the register number associated with that name, return
3334 the integer value associated with the given name or -1 on failure. */
3337 reg_name_search (name
)
3340 int middle
, low
, high
;
3344 high
= REG_NAME_CNT
- 1;
3348 middle
= (low
+ high
) / 2;
3349 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3355 return pre_defined_registers
[middle
].value
;
3357 while (low
<= high
);
3363 /* Return nonzero if the given INSN and L/R information will require
3364 a new PA-1.1 opcode. */
3367 need_pa11_opcode (insn
, result
)
3369 struct pa_11_fp_reg_struct
*result
;
3371 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3373 /* If this instruction is specific to a particular architecture,
3374 then set a new architecture. */
3375 if (bfd_get_mach (stdoutput
) < pa11
)
3377 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, pa11
))
3378 as_warn (_("could not update architecture and machine"));
3386 /* Parse a condition for a fcmp instruction. Return the numerical
3387 code associated with the condition. */
3390 pa_parse_fp_cmp_cond (s
)
3397 for (i
= 0; i
< 32; i
++)
3399 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3400 strlen (fp_cond_map
[i
].string
)) == 0)
3402 cond
= fp_cond_map
[i
].cond
;
3403 *s
+= strlen (fp_cond_map
[i
].string
);
3404 /* If not a complete match, back up the input string and
3406 if (**s
!= ' ' && **s
!= '\t')
3408 *s
-= strlen (fp_cond_map
[i
].string
);
3411 while (**s
== ' ' || **s
== '\t')
3417 as_bad (_("Invalid FP Compare Condition: %s"), *s
);
3419 /* Advance over the bogus completer. */
3420 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3426 /* Parse an FP operand format completer returning the completer
3429 static fp_operand_format
3430 pa_parse_fp_format (s
)
3439 if (strncasecmp (*s
, "sgl", 3) == 0)
3444 else if (strncasecmp (*s
, "dbl", 3) == 0)
3449 else if (strncasecmp (*s
, "quad", 4) == 0)
3456 format
= ILLEGAL_FMT
;
3457 as_bad (_("Invalid FP Operand Format: %3s"), *s
);
3464 /* Convert from a selector string into a selector type. */
3467 pa_chk_field_selector (str
)
3470 int middle
, low
, high
;
3474 /* Read past any whitespace. */
3475 /* FIXME: should we read past newlines and formfeeds??? */
3476 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3479 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3480 name
[0] = tolower ((*str
)[0]),
3482 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3483 name
[0] = tolower ((*str
)[0]),
3484 name
[1] = tolower ((*str
)[1]),
3487 else if ((*str
)[3] == '\'' || (*str
)[3] == '%')
3488 name
[0] = tolower ((*str
)[0]),
3489 name
[1] = tolower ((*str
)[1]),
3490 name
[2] = tolower ((*str
)[2]),
3497 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3501 middle
= (low
+ high
) / 2;
3502 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3509 *str
+= strlen (name
) + 1;
3511 if (selector_table
[middle
].field_selector
== e_nsel
)
3514 return selector_table
[middle
].field_selector
;
3517 while (low
<= high
);
3522 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3525 get_expression (str
)
3531 save_in
= input_line_pointer
;
3532 input_line_pointer
= str
;
3533 seg
= expression (&the_insn
.exp
);
3534 if (!(seg
== absolute_section
3535 || seg
== undefined_section
3536 || SEG_NORMAL (seg
)))
3538 as_warn (_("Bad segment in expression."));
3539 expr_end
= input_line_pointer
;
3540 input_line_pointer
= save_in
;
3543 expr_end
= input_line_pointer
;
3544 input_line_pointer
= save_in
;
3548 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3550 pa_get_absolute_expression (insn
, strp
)
3556 insn
->field_selector
= pa_chk_field_selector (strp
);
3557 save_in
= input_line_pointer
;
3558 input_line_pointer
= *strp
;
3559 expression (&insn
->exp
);
3560 if (insn
->exp
.X_op
!= O_constant
)
3562 as_bad (_("Bad segment (should be absolute)."));
3563 expr_end
= input_line_pointer
;
3564 input_line_pointer
= save_in
;
3567 expr_end
= input_line_pointer
;
3568 input_line_pointer
= save_in
;
3569 return evaluate_absolute (insn
);
3572 /* Evaluate an absolute expression EXP which may be modified by
3573 the selector FIELD_SELECTOR. Return the value of the expression. */
3575 evaluate_absolute (insn
)
3580 int field_selector
= insn
->field_selector
;
3583 value
= exp
.X_add_number
;
3585 switch (field_selector
)
3591 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3593 if (value
& 0x00000400)
3595 value
= (value
& 0xfffff800) >> 11;
3598 /* Sign extend from bit 21. */
3600 if (value
& 0x00000400)
3601 value
|= 0xfffff800;
3606 /* Arithmetic shift right 11 bits. */
3608 value
= (value
& 0xfffff800) >> 11;
3611 /* Set bits 0-20 to zero. */
3613 value
= value
& 0x7ff;
3616 /* Add 0x800 and arithmetic shift right 11 bits. */
3619 value
= (value
& 0xfffff800) >> 11;
3622 /* Set bitgs 0-21 to one. */
3624 value
|= 0xfffff800;
3627 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3629 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3633 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3638 BAD_CASE (field_selector
);
3644 /* Given an argument location specification return the associated
3645 argument location number. */
3648 pa_build_arg_reloc (type_name
)
3652 if (strncasecmp (type_name
, "no", 2) == 0)
3654 if (strncasecmp (type_name
, "gr", 2) == 0)
3656 else if (strncasecmp (type_name
, "fr", 2) == 0)
3658 else if (strncasecmp (type_name
, "fu", 2) == 0)
3661 as_bad (_("Invalid argument location: %s\n"), type_name
);
3666 /* Encode and return an argument relocation specification for
3667 the given register in the location specified by arg_reloc. */
3670 pa_align_arg_reloc (reg
, arg_reloc
)
3672 unsigned int arg_reloc
;
3674 unsigned int new_reloc
;
3676 new_reloc
= arg_reloc
;
3692 as_bad (_("Invalid argument description: %d"), reg
);
3698 /* Parse a PA nullification completer (,n). Return nonzero if the
3699 completer was found; return zero if no completer was found. */
3711 if (strncasecmp (*s
, "n", 1) == 0)
3715 as_bad (_("Invalid Nullification: (%c)"), **s
);
3724 /* Parse a non-negated compare/subtract completer returning the
3725 number (for encoding in instrutions) of the given completer.
3727 ISBRANCH specifies whether or not this is parsing a condition
3728 completer for a branch (vs a nullification completer for a
3729 computational instruction. */
3732 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3737 char *name
= *s
+ 1;
3745 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3749 if (strcmp (name
, "=") == 0)
3753 else if (strcmp (name
, "<") == 0)
3757 else if (strcmp (name
, "<=") == 0)
3761 else if (strcmp (name
, "<<") == 0)
3765 else if (strcmp (name
, "<<=") == 0)
3769 else if (strcasecmp (name
, "sv") == 0)
3773 else if (strcasecmp (name
, "od") == 0)
3777 /* If we have something like addb,n then there is no condition
3779 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3790 /* Reset pointers if this was really a ,n for a branch instruction. */
3791 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3797 /* Parse a negated compare/subtract completer returning the
3798 number (for encoding in instrutions) of the given completer.
3800 ISBRANCH specifies whether or not this is parsing a condition
3801 completer for a branch (vs a nullification completer for a
3802 computational instruction. */
3805 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3810 char *name
= *s
+ 1;
3818 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3822 if (strcasecmp (name
, "tr") == 0)
3826 else if (strcmp (name
, "<>") == 0)
3830 else if (strcmp (name
, ">=") == 0)
3834 else if (strcmp (name
, ">") == 0)
3838 else if (strcmp (name
, ">>=") == 0)
3842 else if (strcmp (name
, ">>") == 0)
3846 else if (strcasecmp (name
, "nsv") == 0)
3850 else if (strcasecmp (name
, "ev") == 0)
3854 /* If we have something like addb,n then there is no condition
3856 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3867 /* Reset pointers if this was really a ,n for a branch instruction. */
3868 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3874 /* Parse a non-negated addition completer returning the number
3875 (for encoding in instrutions) of the given completer.
3877 ISBRANCH specifies whether or not this is parsing a condition
3878 completer for a branch (vs a nullification completer for a
3879 computational instruction. */
3882 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3887 char *name
= *s
+ 1;
3895 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3899 if (strcmp (name
, "=") == 0)
3903 else if (strcmp (name
, "<") == 0)
3907 else if (strcmp (name
, "<=") == 0)
3911 else if (strcasecmp (name
, "nuv") == 0)
3915 else if (strcasecmp (name
, "znv") == 0)
3919 else if (strcasecmp (name
, "sv") == 0)
3923 else if (strcasecmp (name
, "od") == 0)
3927 /* If we have something like addb,n then there is no condition
3929 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3940 /* Reset pointers if this was really a ,n for a branch instruction. */
3941 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3947 /* Parse a negated addition completer returning the number
3948 (for encoding in instrutions) of the given completer.
3950 ISBRANCH specifies whether or not this is parsing a condition
3951 completer for a branch (vs a nullification completer for a
3952 computational instruction). */
3955 pa_parse_neg_add_cmpltr (s
, isbranch
)
3960 char *name
= *s
+ 1;
3968 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3972 if (strcasecmp (name
, "tr") == 0)
3976 else if (strcmp (name
, "<>") == 0)
3980 else if (strcmp (name
, ">=") == 0)
3984 else if (strcmp (name
, ">") == 0)
3988 else if (strcasecmp (name
, "uv") == 0)
3992 else if (strcasecmp (name
, "vnz") == 0)
3996 else if (strcasecmp (name
, "nsv") == 0)
4000 else if (strcasecmp (name
, "ev") == 0)
4004 /* If we have something like addb,n then there is no condition
4006 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4017 /* Reset pointers if this was really a ,n for a branch instruction. */
4018 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4024 /* Handle an alignment directive. Special so that we can update the
4025 alignment of the subspace if necessary. */
4029 /* We must have a valid space and subspace. */
4030 pa_check_current_space_and_subspace ();
4032 /* Let the generic gas code do most of the work. */
4033 s_align_bytes (bytes
);
4035 /* If bytes is a power of 2, then update the current subspace's
4036 alignment if necessary. */
4037 if (log2 (bytes
) != -1)
4038 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
4041 /* Handle a .BLOCK type pseudo-op. */
4049 unsigned int temp_size
;
4052 /* We must have a valid space and subspace. */
4053 pa_check_current_space_and_subspace ();
4055 temp_size
= get_absolute_expression ();
4057 /* Always fill with zeros, that's what the HP assembler does. */
4060 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4061 (relax_substateT
) 0, (symbolS
*) 0, (offsetT
) 1, NULL
);
4062 bzero (p
, temp_size
);
4064 /* Convert 2 bytes at a time. */
4066 for (i
= 0; i
< temp_size
; i
+= 2)
4068 md_number_to_chars (p
+ i
,
4070 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4073 pa_undefine_label ();
4074 demand_empty_rest_of_line ();
4077 /* Handle a .begin_brtab and .end_brtab pseudo-op. */
4085 /* The BRTAB relocations are only availble in SOM (to denote
4086 the beginning and end of branch tables). */
4087 char *where
= frag_more (0);
4089 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4090 NULL
, (offsetT
) 0, NULL
,
4091 0, begin
? R_HPPA_BEGIN_BRTAB
: R_HPPA_END_BRTAB
,
4092 e_fsel
, 0, 0, NULL
);
4095 demand_empty_rest_of_line ();
4098 /* Handle a .begin_try and .end_try pseudo-op. */
4106 char *where
= frag_more (0);
4111 /* The TRY relocations are only availble in SOM (to denote
4112 the beginning and end of exception handling regions). */
4114 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4115 NULL
, (offsetT
) 0, begin
? NULL
: &exp
,
4116 0, begin
? R_HPPA_BEGIN_TRY
: R_HPPA_END_TRY
,
4117 e_fsel
, 0, 0, NULL
);
4120 demand_empty_rest_of_line ();
4123 /* Handle a .CALL pseudo-op. This involves storing away information
4124 about where arguments are to be found so the linker can detect
4125 (and correct) argument location mismatches between caller and callee. */
4131 /* We must have a valid space and subspace. */
4132 pa_check_current_space_and_subspace ();
4134 pa_call_args (&last_call_desc
);
4135 demand_empty_rest_of_line ();
4138 /* Do the dirty work of building a call descriptor which describes
4139 where the caller placed arguments to a function call. */
4142 pa_call_args (call_desc
)
4143 struct call_desc
*call_desc
;
4146 unsigned int temp
, arg_reloc
;
4148 while (!is_end_of_statement ())
4150 name
= input_line_pointer
;
4151 c
= get_symbol_end ();
4152 /* Process a source argument. */
4153 if ((strncasecmp (name
, "argw", 4) == 0))
4155 temp
= atoi (name
+ 4);
4156 p
= input_line_pointer
;
4158 input_line_pointer
++;
4159 name
= input_line_pointer
;
4160 c
= get_symbol_end ();
4161 arg_reloc
= pa_build_arg_reloc (name
);
4162 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4164 /* Process a return value. */
4165 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4167 p
= input_line_pointer
;
4169 input_line_pointer
++;
4170 name
= input_line_pointer
;
4171 c
= get_symbol_end ();
4172 arg_reloc
= pa_build_arg_reloc (name
);
4173 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4177 as_bad (_("Invalid .CALL argument: %s"), name
);
4179 p
= input_line_pointer
;
4181 if (!is_end_of_statement ())
4182 input_line_pointer
++;
4186 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4189 is_same_frag (frag1
, frag2
)
4196 else if (frag2
== NULL
)
4198 else if (frag1
== frag2
)
4200 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4201 return (is_same_frag (frag1
, frag2
->fr_next
));
4207 /* Build an entry in the UNWIND subspace from the given function
4208 attributes in CALL_INFO. This is not needed for SOM as using
4209 R_ENTRY and R_EXIT relocations allow the linker to handle building
4210 of the unwind spaces. */
4213 pa_build_unwind_subspace (call_info
)
4214 struct call_info
*call_info
;
4217 asection
*seg
, *save_seg
;
4218 subsegT subseg
, save_subseg
;
4222 /* Get into the right seg/subseg. This may involve creating
4223 the seg the first time through. Make sure to have the
4224 old seg/subseg so that we can reset things when we are done. */
4225 subseg
= SUBSEG_UNWIND
;
4226 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4227 if (seg
== ASEC_NULL
)
4229 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4230 bfd_set_section_flags (stdoutput
, seg
,
4231 SEC_READONLY
| SEC_HAS_CONTENTS
4232 | SEC_LOAD
| SEC_RELOC
);
4236 save_subseg
= now_subseg
;
4237 subseg_set (seg
, subseg
);
4240 /* Get some space to hold relocation information for the unwind
4243 md_number_to_chars (p
, 0, 4);
4245 /* Relocation info. for start offset of the function. */
4246 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4247 call_info
->start_symbol
, (offsetT
) 0,
4248 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4251 md_number_to_chars (p
, 0, 4);
4253 /* Relocation info. for end offset of the function.
4255 Because we allow reductions of 32bit relocations for ELF, this will be
4256 reduced to section_sym + offset which avoids putting the temporary
4257 symbol into the symbol table. It (should) end up giving the same
4258 value as call_info->start_symbol + function size once the linker is
4259 finished with its work. */
4261 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4262 call_info
->end_symbol
, (offsetT
) 0,
4263 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4266 unwind
= (char *) &call_info
->ci_unwind
;
4267 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4271 FRAG_APPEND_1_CHAR (c
);
4275 /* Return back to the original segment/subsegment. */
4276 subseg_set (save_seg
, save_subseg
);
4280 /* Process a .CALLINFO pseudo-op. This information is used later
4281 to build unwind descriptors and maybe one day to support
4282 .ENTER and .LEAVE. */
4285 pa_callinfo (unused
)
4291 /* We must have a valid space and subspace. */
4292 pa_check_current_space_and_subspace ();
4294 /* .CALLINFO must appear within a procedure definition. */
4295 if (!within_procedure
)
4296 as_bad (_(".callinfo is not within a procedure definition"));
4298 /* Mark the fact that we found the .CALLINFO for the
4299 current procedure. */
4300 callinfo_found
= TRUE
;
4302 /* Iterate over the .CALLINFO arguments. */
4303 while (!is_end_of_statement ())
4305 name
= input_line_pointer
;
4306 c
= get_symbol_end ();
4307 /* Frame size specification. */
4308 if ((strncasecmp (name
, "frame", 5) == 0))
4310 p
= input_line_pointer
;
4312 input_line_pointer
++;
4313 temp
= get_absolute_expression ();
4314 if ((temp
& 0x3) != 0)
4316 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp
);
4320 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4321 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4324 /* Entry register (GR, GR and SR) specifications. */
4325 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4327 p
= input_line_pointer
;
4329 input_line_pointer
++;
4330 temp
= get_absolute_expression ();
4331 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4332 even though %r19 is caller saved. I think this is a bug in
4333 the HP assembler, and we are not going to emulate it. */
4334 if (temp
< 3 || temp
> 18)
4335 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
4336 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4338 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4340 p
= input_line_pointer
;
4342 input_line_pointer
++;
4343 temp
= get_absolute_expression ();
4344 /* Similarly the HP assembler takes 31 as the high bound even
4345 though %fr21 is the last callee saved floating point register. */
4346 if (temp
< 12 || temp
> 21)
4347 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
4348 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4350 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4352 p
= input_line_pointer
;
4354 input_line_pointer
++;
4355 temp
= get_absolute_expression ();
4357 as_bad (_("Value for ENTRY_SR must be 3\n"));
4359 /* Note whether or not this function performs any calls. */
4360 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4361 (strncasecmp (name
, "caller", 6) == 0))
4363 p
= input_line_pointer
;
4366 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4368 p
= input_line_pointer
;
4371 /* Should RP be saved into the stack. */
4372 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4374 p
= input_line_pointer
;
4376 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4378 /* Likewise for SP. */
4379 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4381 p
= input_line_pointer
;
4383 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4385 /* Is this an unwindable procedure. If so mark it so
4386 in the unwind descriptor. */
4387 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4389 p
= input_line_pointer
;
4391 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4393 /* Is this an interrupt routine. If so mark it in the
4394 unwind descriptor. */
4395 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4397 p
= input_line_pointer
;
4399 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4401 /* Is this a millicode routine. "millicode" isn't in my
4402 assembler manual, but my copy is old. The HP assembler
4403 accepts it, and there's a place in the unwind descriptor
4404 to drop the information, so we'll accept it too. */
4405 else if ((strncasecmp (name
, "millicode", 9) == 0))
4407 p
= input_line_pointer
;
4409 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4413 as_bad (_("Invalid .CALLINFO argument: %s"), name
);
4414 *input_line_pointer
= c
;
4416 if (!is_end_of_statement ())
4417 input_line_pointer
++;
4420 demand_empty_rest_of_line ();
4423 /* Switch into the code subspace. */
4429 current_space
= is_defined_space ("$TEXT$");
4431 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
4433 pa_undefine_label ();
4436 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4437 the .comm pseudo-op has the following symtax:
4439 <label> .comm <length>
4441 where <label> is optional and is a symbol whose address will be the start of
4442 a block of memory <length> bytes long. <length> must be an absolute
4443 expression. <length> bytes will be allocated in the current space
4446 Also note the label may not even be on the same line as the .comm.
4448 This difference in syntax means the colon function will be called
4449 on the symbol before we arrive in pa_comm. colon will set a number
4450 of attributes of the symbol that need to be fixed here. In particular
4451 the value, section pointer, fragment pointer, flags, etc. What
4454 This also makes error detection all but impossible. */
4462 label_symbol_struct
*label_symbol
= pa_get_label ();
4465 symbol
= label_symbol
->lss_label
;
4470 size
= get_absolute_expression ();
4474 S_SET_VALUE (symbol
, size
);
4475 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4476 S_SET_EXTERNAL (symbol
);
4478 /* colon() has already set the frag to the current location in the
4479 current subspace; we need to reset the fragment to the zero address
4480 fragment. We also need to reset the segment pointer. */
4481 symbol
->sy_frag
= &zero_address_frag
;
4483 demand_empty_rest_of_line ();
4486 /* Process a .END pseudo-op. */
4492 demand_empty_rest_of_line ();
4495 /* Process a .ENTER pseudo-op. This is not supported. */
4500 /* We must have a valid space and subspace. */
4501 pa_check_current_space_and_subspace ();
4506 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4512 /* We must have a valid space and subspace. */
4513 pa_check_current_space_and_subspace ();
4515 if (!within_procedure
)
4516 as_bad (_("Misplaced .entry. Ignored."));
4519 if (!callinfo_found
)
4520 as_bad (_("Missing .callinfo."));
4522 demand_empty_rest_of_line ();
4523 within_entry_exit
= TRUE
;
4526 /* SOM defers building of unwind descriptors until the link phase.
4527 The assembler is responsible for creating an R_ENTRY relocation
4528 to mark the beginning of a region and hold the unwind bits, and
4529 for creating an R_EXIT relocation to mark the end of the region.
4531 FIXME. ELF should be using the same conventions! The problem
4532 is an unwind requires too much relocation space. Hmmm. Maybe
4533 if we split the unwind bits up between the relocations which
4534 denote the entry and exit points. */
4535 if (last_call_info
->start_symbol
!= NULL
)
4537 char *where
= frag_more (0);
4539 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4540 NULL
, (offsetT
) 0, NULL
,
4541 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4542 (int *) &last_call_info
->ci_unwind
.descriptor
);
4547 /* Handle a .EQU pseudo-op. */
4553 label_symbol_struct
*label_symbol
= pa_get_label ();
4558 symbol
= label_symbol
->lss_label
;
4560 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4562 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4563 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4568 as_bad (_(".REG must use a label"));
4570 as_bad (_(".EQU must use a label"));
4573 pa_undefine_label ();
4574 demand_empty_rest_of_line ();
4577 /* Helper function. Does processing for the end of a function. This
4578 usually involves creating some relocations or building special
4579 symbols to mark the end of the function. */
4586 where
= frag_more (0);
4589 /* Mark the end of the function, stuff away the location of the frag
4590 for the end of the function, and finally call pa_build_unwind_subspace
4591 to add an entry in the unwind table. */
4592 hppa_elf_mark_end_of_function ();
4593 pa_build_unwind_subspace (last_call_info
);
4595 /* SOM defers building of unwind descriptors until the link phase.
4596 The assembler is responsible for creating an R_ENTRY relocation
4597 to mark the beginning of a region and hold the unwind bits, and
4598 for creating an R_EXIT relocation to mark the end of the region.
4600 FIXME. ELF should be using the same conventions! The problem
4601 is an unwind requires too much relocation space. Hmmm. Maybe
4602 if we split the unwind bits up between the relocations which
4603 denote the entry and exit points. */
4604 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4606 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4607 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4611 /* Process a .EXIT pseudo-op. */
4617 /* We must have a valid space and subspace. */
4618 pa_check_current_space_and_subspace ();
4620 if (!within_procedure
)
4621 as_bad (_(".EXIT must appear within a procedure"));
4624 if (!callinfo_found
)
4625 as_bad (_("Missing .callinfo"));
4628 if (!within_entry_exit
)
4629 as_bad (_("No .ENTRY for this .EXIT"));
4632 within_entry_exit
= FALSE
;
4637 demand_empty_rest_of_line ();
4640 /* Process a .EXPORT directive. This makes functions external
4641 and provides information such as argument relocation entries
4651 name
= input_line_pointer
;
4652 c
= get_symbol_end ();
4653 /* Make sure the given symbol exists. */
4654 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4656 as_bad (_("Cannot define export symbol: %s\n"), name
);
4657 p
= input_line_pointer
;
4659 input_line_pointer
++;
4663 /* OK. Set the external bits and process argument relocations. */
4664 S_SET_EXTERNAL (symbol
);
4665 p
= input_line_pointer
;
4667 if (!is_end_of_statement ())
4669 input_line_pointer
++;
4670 pa_type_args (symbol
, 1);
4674 demand_empty_rest_of_line ();
4677 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4680 pa_type_args (symbolP
, is_export
)
4685 unsigned int temp
, arg_reloc
;
4686 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4687 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4689 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4692 input_line_pointer
+= 8;
4693 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4694 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4695 type
= SYMBOL_TYPE_ABSOLUTE
;
4697 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4699 input_line_pointer
+= 4;
4700 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4701 instead one should be IMPORTing/EXPORTing ENTRY types.
4703 Complain if one tries to EXPORT a CODE type since that's never
4704 done. Both GCC and HP C still try to IMPORT CODE types, so
4705 silently fix them to be ENTRY types. */
4706 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4709 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"), symbolP
->bsym
->name
);
4711 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4712 type
= SYMBOL_TYPE_ENTRY
;
4716 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4717 type
= SYMBOL_TYPE_CODE
;
4720 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4722 input_line_pointer
+= 4;
4723 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4724 type
= SYMBOL_TYPE_DATA
;
4726 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4728 input_line_pointer
+= 5;
4729 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4730 type
= SYMBOL_TYPE_ENTRY
;
4732 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4734 input_line_pointer
+= 9;
4735 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4736 type
= SYMBOL_TYPE_MILLICODE
;
4738 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4740 input_line_pointer
+= 6;
4741 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4742 type
= SYMBOL_TYPE_PLABEL
;
4744 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4746 input_line_pointer
+= 8;
4747 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4748 type
= SYMBOL_TYPE_PRI_PROG
;
4750 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4752 input_line_pointer
+= 8;
4753 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4754 type
= SYMBOL_TYPE_SEC_PROG
;
4757 /* SOM requires much more information about symbol types
4758 than BFD understands. This is how we get this information
4759 to the SOM BFD backend. */
4760 #ifdef obj_set_symbol_type
4761 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4764 /* Now that the type of the exported symbol has been handled,
4765 handle any argument relocation information. */
4766 while (!is_end_of_statement ())
4768 if (*input_line_pointer
== ',')
4769 input_line_pointer
++;
4770 name
= input_line_pointer
;
4771 c
= get_symbol_end ();
4772 /* Argument sources. */
4773 if ((strncasecmp (name
, "argw", 4) == 0))
4775 p
= input_line_pointer
;
4777 input_line_pointer
++;
4778 temp
= atoi (name
+ 4);
4779 name
= input_line_pointer
;
4780 c
= get_symbol_end ();
4781 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4782 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4783 *input_line_pointer
= c
;
4785 /* The return value. */
4786 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4788 p
= input_line_pointer
;
4790 input_line_pointer
++;
4791 name
= input_line_pointer
;
4792 c
= get_symbol_end ();
4793 arg_reloc
= pa_build_arg_reloc (name
);
4794 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4795 *input_line_pointer
= c
;
4797 /* Privelege level. */
4798 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4800 p
= input_line_pointer
;
4802 input_line_pointer
++;
4803 temp
= atoi (input_line_pointer
);
4804 c
= get_symbol_end ();
4805 *input_line_pointer
= c
;
4809 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name
);
4810 p
= input_line_pointer
;
4813 if (!is_end_of_statement ())
4814 input_line_pointer
++;
4818 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4819 assembly file must either be defined in the assembly file, or
4820 explicitly IMPORTED from another. */
4829 name
= input_line_pointer
;
4830 c
= get_symbol_end ();
4832 symbol
= symbol_find (name
);
4833 /* Ugh. We might be importing a symbol defined earlier in the file,
4834 in which case all the code below will really screw things up
4835 (set the wrong segment, symbol flags & type, etc). */
4836 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4838 symbol
= symbol_find_or_make (name
);
4839 p
= input_line_pointer
;
4842 if (!is_end_of_statement ())
4844 input_line_pointer
++;
4845 pa_type_args (symbol
, 0);
4849 /* Sigh. To be compatable with the HP assembler and to help
4850 poorly written assembly code, we assign a type based on
4851 the the current segment. Note only BSF_FUNCTION really
4852 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4853 if (now_seg
== text_section
)
4854 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4856 /* If the section is undefined, then the symbol is undefined
4857 Since this is an import, leave the section undefined. */
4858 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4863 /* The symbol was already defined. Just eat everything up to
4864 the end of the current statement. */
4865 while (!is_end_of_statement ())
4866 input_line_pointer
++;
4869 demand_empty_rest_of_line ();
4872 /* Handle a .LABEL pseudo-op. */
4880 name
= input_line_pointer
;
4881 c
= get_symbol_end ();
4883 if (strlen (name
) > 0)
4886 p
= input_line_pointer
;
4891 as_warn (_("Missing label name on .LABEL"));
4894 if (!is_end_of_statement ())
4896 as_warn (_("extra .LABEL arguments ignored."));
4897 ignore_rest_of_line ();
4899 demand_empty_rest_of_line ();
4902 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4908 /* We must have a valid space and subspace. */
4909 pa_check_current_space_and_subspace ();
4914 /* Handle a .LEVEL pseudo-op. */
4922 level
= input_line_pointer
;
4923 if (strncmp (level
, "1.0", 3) == 0)
4925 input_line_pointer
+= 3;
4926 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, 10))
4927 as_warn (_("could not set architecture and machine"));
4929 else if (strncmp (level
, "1.1", 3) == 0)
4931 input_line_pointer
+= 3;
4932 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, 11))
4933 as_warn (_("could not set architecture and machine"));
4937 as_bad (_("Unrecognized .LEVEL argument\n"));
4938 ignore_rest_of_line ();
4940 demand_empty_rest_of_line ();
4943 /* Handle a .ORIGIN pseudo-op. */
4949 /* We must have a valid space and subspace. */
4950 pa_check_current_space_and_subspace ();
4953 pa_undefine_label ();
4956 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4957 is for static functions. FIXME. Should share more code with .EXPORT. */
4966 name
= input_line_pointer
;
4967 c
= get_symbol_end ();
4969 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4971 as_bad (_("Cannot define static symbol: %s\n"), name
);
4972 p
= input_line_pointer
;
4974 input_line_pointer
++;
4978 S_CLEAR_EXTERNAL (symbol
);
4979 p
= input_line_pointer
;
4981 if (!is_end_of_statement ())
4983 input_line_pointer
++;
4984 pa_type_args (symbol
, 0);
4988 demand_empty_rest_of_line ();
4991 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4992 of a procedure from a syntatical point of view. */
4998 struct call_info
*call_info
;
5000 /* We must have a valid space and subspace. */
5001 pa_check_current_space_and_subspace ();
5003 if (within_procedure
)
5004 as_fatal (_("Nested procedures"));
5006 /* Reset global variables for new procedure. */
5007 callinfo_found
= FALSE
;
5008 within_procedure
= TRUE
;
5010 /* Create another call_info structure. */
5011 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
5014 as_fatal (_("Cannot allocate unwind descriptor\n"));
5016 bzero (call_info
, sizeof (struct call_info
));
5018 call_info
->ci_next
= NULL
;
5020 if (call_info_root
== NULL
)
5022 call_info_root
= call_info
;
5023 last_call_info
= call_info
;
5027 last_call_info
->ci_next
= call_info
;
5028 last_call_info
= call_info
;
5031 /* set up defaults on call_info structure */
5033 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
5034 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
5035 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
5037 /* If we got a .PROC pseudo-op, we know that the function is defined
5038 locally. Make sure it gets into the symbol table. */
5040 label_symbol_struct
*label_symbol
= pa_get_label ();
5044 if (label_symbol
->lss_label
)
5046 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5047 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5050 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5053 last_call_info
->start_symbol
= NULL
;
5056 demand_empty_rest_of_line ();
5059 /* Process the syntatical end of a procedure. Make sure all the
5060 appropriate pseudo-ops were found within the procedure. */
5067 /* We must have a valid space and subspace. */
5068 pa_check_current_space_and_subspace ();
5070 /* If we are within a procedure definition, make sure we've
5071 defined a label for the procedure; handle case where the
5072 label was defined after the .PROC directive.
5074 Note there's not need to diddle with the segment or fragment
5075 for the label symbol in this case. We have already switched
5076 into the new $CODE$ subspace at this point. */
5077 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
5079 label_symbol_struct
*label_symbol
= pa_get_label ();
5083 if (label_symbol
->lss_label
)
5085 last_call_info
->start_symbol
= label_symbol
->lss_label
;
5086 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
5088 /* Also handle allocation of a fixup to hold the unwind
5089 information when the label appears after the proc/procend. */
5090 if (within_entry_exit
)
5092 char *where
= frag_more (0);
5094 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
5095 NULL
, (offsetT
) 0, NULL
,
5096 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
5097 (int *) &last_call_info
->ci_unwind
.descriptor
);
5102 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5105 as_bad (_("Missing function name for .PROC"));
5108 if (!within_procedure
)
5109 as_bad (_("misplaced .procend"));
5111 if (!callinfo_found
)
5112 as_bad (_("Missing .callinfo for this procedure"));
5114 if (within_entry_exit
)
5115 as_bad (_("Missing .EXIT for a .ENTRY"));
5118 /* ELF needs to mark the end of each function so that it can compute
5119 the size of the function (apparently its needed in the symbol table). */
5120 hppa_elf_mark_end_of_function ();
5123 within_procedure
= FALSE
;
5124 demand_empty_rest_of_line ();
5125 pa_undefine_label ();
5128 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5129 then create a new space entry to hold the information specified
5130 by the parameters to the .SPACE directive. */
5132 static sd_chain_struct
*
5133 pa_parse_space_stmt (space_name
, create_flag
)
5137 char *name
, *ptemp
, c
;
5138 char loadable
, defined
, private, sort
;
5140 asection
*seg
= NULL
;
5141 sd_chain_struct
*space
;
5143 /* load default values */
5149 if (strcmp (space_name
, "$TEXT$") == 0)
5151 seg
= pa_def_spaces
[0].segment
;
5152 defined
= pa_def_spaces
[0].defined
;
5153 private = pa_def_spaces
[0].private;
5154 sort
= pa_def_spaces
[0].sort
;
5155 spnum
= pa_def_spaces
[0].spnum
;
5157 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5159 seg
= pa_def_spaces
[1].segment
;
5160 defined
= pa_def_spaces
[1].defined
;
5161 private = pa_def_spaces
[1].private;
5162 sort
= pa_def_spaces
[1].sort
;
5163 spnum
= pa_def_spaces
[1].spnum
;
5166 if (!is_end_of_statement ())
5168 print_errors
= FALSE
;
5169 ptemp
= input_line_pointer
+ 1;
5170 /* First see if the space was specified as a number rather than
5171 as a name. According to the PA assembly manual the rest of
5172 the line should be ignored. */
5173 temp
= pa_parse_number (&ptemp
, 0);
5177 input_line_pointer
= ptemp
;
5181 while (!is_end_of_statement ())
5183 input_line_pointer
++;
5184 name
= input_line_pointer
;
5185 c
= get_symbol_end ();
5186 if ((strncasecmp (name
, "spnum", 5) == 0))
5188 *input_line_pointer
= c
;
5189 input_line_pointer
++;
5190 spnum
= get_absolute_expression ();
5192 else if ((strncasecmp (name
, "sort", 4) == 0))
5194 *input_line_pointer
= c
;
5195 input_line_pointer
++;
5196 sort
= get_absolute_expression ();
5198 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5200 *input_line_pointer
= c
;
5203 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5205 *input_line_pointer
= c
;
5208 else if ((strncasecmp (name
, "private", 7) == 0))
5210 *input_line_pointer
= c
;
5215 as_bad (_("Invalid .SPACE argument"));
5216 *input_line_pointer
= c
;
5217 if (!is_end_of_statement ())
5218 input_line_pointer
++;
5222 print_errors
= TRUE
;
5225 if (create_flag
&& seg
== NULL
)
5226 seg
= subseg_new (space_name
, 0);
5228 /* If create_flag is nonzero, then create the new space with
5229 the attributes computed above. Else set the values in
5230 an already existing space -- this can only happen for
5231 the first occurence of a built-in space. */
5233 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5234 private, sort
, seg
, 1);
5237 space
= is_defined_space (space_name
);
5238 SPACE_SPNUM (space
) = spnum
;
5239 SPACE_DEFINED (space
) = defined
& 1;
5240 SPACE_USER_DEFINED (space
) = 1;
5243 #ifdef obj_set_section_attributes
5244 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5250 /* Handle a .SPACE pseudo-op; this switches the current space to the
5251 given space, creating the new space if necessary. */
5257 char *name
, c
, *space_name
, *save_s
;
5259 sd_chain_struct
*sd_chain
;
5261 if (within_procedure
)
5263 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
5264 ignore_rest_of_line ();
5268 /* Check for some of the predefined spaces. FIXME: most of the code
5269 below is repeated several times, can we extract the common parts
5270 and place them into a subroutine or something similar? */
5271 /* FIXME Is this (and the next IF stmt) really right?
5272 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5273 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5275 input_line_pointer
+= 6;
5276 sd_chain
= is_defined_space ("$TEXT$");
5277 if (sd_chain
== NULL
)
5278 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5279 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5280 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5282 current_space
= sd_chain
;
5283 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5285 = pa_subsegment_to_subspace (text_section
,
5286 sd_chain
->sd_last_subseg
);
5287 demand_empty_rest_of_line ();
5290 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5292 input_line_pointer
+= 9;
5293 sd_chain
= is_defined_space ("$PRIVATE$");
5294 if (sd_chain
== NULL
)
5295 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5296 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5297 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5299 current_space
= sd_chain
;
5300 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5302 = pa_subsegment_to_subspace (data_section
,
5303 sd_chain
->sd_last_subseg
);
5304 demand_empty_rest_of_line ();
5307 if (!strncasecmp (input_line_pointer
,
5308 GDB_DEBUG_SPACE_NAME
,
5309 strlen (GDB_DEBUG_SPACE_NAME
)))
5311 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5312 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5313 if (sd_chain
== NULL
)
5314 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5315 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5316 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5318 current_space
= sd_chain
;
5321 asection
*gdb_section
5322 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5324 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5326 = pa_subsegment_to_subspace (gdb_section
,
5327 sd_chain
->sd_last_subseg
);
5329 demand_empty_rest_of_line ();
5333 /* It could be a space specified by number. */
5335 save_s
= input_line_pointer
;
5336 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5338 if ((sd_chain
= pa_find_space_by_number (temp
)))
5340 current_space
= sd_chain
;
5342 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5344 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5345 sd_chain
->sd_last_subseg
);
5346 demand_empty_rest_of_line ();
5351 /* Not a number, attempt to create a new space. */
5353 input_line_pointer
= save_s
;
5354 name
= input_line_pointer
;
5355 c
= get_symbol_end ();
5356 space_name
= xmalloc (strlen (name
) + 1);
5357 strcpy (space_name
, name
);
5358 *input_line_pointer
= c
;
5360 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5361 current_space
= sd_chain
;
5363 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5364 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5365 sd_chain
->sd_last_subseg
);
5366 demand_empty_rest_of_line ();
5370 /* Switch to a new space. (I think). FIXME. */
5379 sd_chain_struct
*space
;
5381 name
= input_line_pointer
;
5382 c
= get_symbol_end ();
5383 space
= is_defined_space (name
);
5387 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5390 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name
);
5392 *input_line_pointer
= c
;
5393 demand_empty_rest_of_line ();
5396 /* If VALUE is an exact power of two between zero and 2^31, then
5397 return log2 (VALUE). Else return -1. */
5405 while ((1 << shift
) != value
&& shift
< 32)
5414 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5415 given subspace, creating the new subspace if necessary.
5417 FIXME. Should mirror pa_space more closely, in particular how
5418 they're broken up into subroutines. */
5421 pa_subspace (create_new
)
5424 char *name
, *ss_name
, *alias
, c
;
5425 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5426 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5427 sd_chain_struct
*space
;
5428 ssd_chain_struct
*ssd
;
5431 if (current_space
== NULL
)
5432 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
5434 if (within_procedure
)
5436 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
5437 ignore_rest_of_line ();
5441 name
= input_line_pointer
;
5442 c
= get_symbol_end ();
5443 ss_name
= xmalloc (strlen (name
) + 1);
5444 strcpy (ss_name
, name
);
5445 *input_line_pointer
= c
;
5447 /* Load default values. */
5460 space
= current_space
;
5464 ssd
= is_defined_subspace (ss_name
);
5465 /* Allow user to override the builtin attributes of subspaces. But
5466 only allow the attributes to be changed once! */
5467 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5469 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5470 current_subspace
= ssd
;
5471 if (!is_end_of_statement ())
5472 as_warn (_("Parameters of an existing subspace can\'t be modified"));
5473 demand_empty_rest_of_line ();
5478 /* A new subspace. Load default values if it matches one of
5479 the builtin subspaces. */
5481 while (pa_def_subspaces
[i
].name
)
5483 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5485 loadable
= pa_def_subspaces
[i
].loadable
;
5486 common
= pa_def_subspaces
[i
].common
;
5487 dup_common
= pa_def_subspaces
[i
].dup_common
;
5488 code_only
= pa_def_subspaces
[i
].code_only
;
5489 zero
= pa_def_subspaces
[i
].zero
;
5490 space_index
= pa_def_subspaces
[i
].space_index
;
5491 alignment
= pa_def_subspaces
[i
].alignment
;
5492 quadrant
= pa_def_subspaces
[i
].quadrant
;
5493 access
= pa_def_subspaces
[i
].access
;
5494 sort
= pa_def_subspaces
[i
].sort
;
5495 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5496 alias
= pa_def_subspaces
[i
].alias
;
5503 /* We should be working with a new subspace now. Fill in
5504 any information as specified by the user. */
5505 if (!is_end_of_statement ())
5507 input_line_pointer
++;
5508 while (!is_end_of_statement ())
5510 name
= input_line_pointer
;
5511 c
= get_symbol_end ();
5512 if ((strncasecmp (name
, "quad", 4) == 0))
5514 *input_line_pointer
= c
;
5515 input_line_pointer
++;
5516 quadrant
= get_absolute_expression ();
5518 else if ((strncasecmp (name
, "align", 5) == 0))
5520 *input_line_pointer
= c
;
5521 input_line_pointer
++;
5522 alignment
= get_absolute_expression ();
5523 if (log2 (alignment
) == -1)
5525 as_bad (_("Alignment must be a power of 2"));
5529 else if ((strncasecmp (name
, "access", 6) == 0))
5531 *input_line_pointer
= c
;
5532 input_line_pointer
++;
5533 access
= get_absolute_expression ();
5535 else if ((strncasecmp (name
, "sort", 4) == 0))
5537 *input_line_pointer
= c
;
5538 input_line_pointer
++;
5539 sort
= get_absolute_expression ();
5541 else if ((strncasecmp (name
, "code_only", 9) == 0))
5543 *input_line_pointer
= c
;
5546 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5548 *input_line_pointer
= c
;
5551 else if ((strncasecmp (name
, "common", 6) == 0))
5553 *input_line_pointer
= c
;
5556 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5558 *input_line_pointer
= c
;
5561 else if ((strncasecmp (name
, "zero", 4) == 0))
5563 *input_line_pointer
= c
;
5566 else if ((strncasecmp (name
, "first", 5) == 0))
5567 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
5569 as_bad (_("Invalid .SUBSPACE argument"));
5570 if (!is_end_of_statement ())
5571 input_line_pointer
++;
5575 /* Compute a reasonable set of BFD flags based on the information
5576 in the .subspace directive. */
5577 applicable
= bfd_applicable_section_flags (stdoutput
);
5580 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5583 if (common
|| dup_common
)
5584 flags
|= SEC_IS_COMMON
;
5586 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5588 /* This is a zero-filled subspace (eg BSS). */
5590 flags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
5592 applicable
&= flags
;
5594 /* If this is an existing subspace, then we want to use the
5595 segment already associated with the subspace.
5597 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5598 lots of sections. It might be a problem in the PA ELF
5599 code, I do not know yet. For now avoid creating anything
5600 but the "standard" sections for ELF. */
5602 section
= subseg_force_new (ss_name
, 0);
5604 section
= ssd
->ssd_seg
;
5606 section
= subseg_new (alias
, 0);
5607 else if (!alias
&& USE_ALIASES
)
5609 as_warn (_("Ignoring subspace decl due to ELF BFD bugs."));
5610 demand_empty_rest_of_line ();
5614 section
= subseg_new (ss_name
, 0);
5617 seg_info (section
)->bss
= 1;
5619 /* Now set the flags. */
5620 bfd_set_section_flags (stdoutput
, section
, applicable
);
5622 /* Record any alignment request for this section. */
5623 record_alignment (section
, log2 (alignment
));
5625 /* Set the starting offset for this section. */
5626 bfd_set_section_vma (stdoutput
, section
,
5627 pa_subspace_start (space
, quadrant
));
5629 /* Now that all the flags are set, update an existing subspace,
5630 or create a new one. */
5633 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5634 code_only
, common
, dup_common
,
5635 sort
, zero
, access
, space_index
,
5636 alignment
, quadrant
,
5639 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5641 dup_common
, zero
, sort
,
5642 access
, space_index
,
5643 alignment
, quadrant
, section
);
5645 demand_empty_rest_of_line ();
5646 current_subspace
->ssd_seg
= section
;
5647 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5649 SUBSPACE_DEFINED (current_subspace
) = 1;
5653 /* Create default space and subspace dictionaries. */
5660 space_dict_root
= NULL
;
5661 space_dict_last
= NULL
;
5664 while (pa_def_spaces
[i
].name
)
5668 /* Pick the right name to use for the new section. */
5669 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5670 name
= pa_def_spaces
[i
].alias
;
5672 name
= pa_def_spaces
[i
].name
;
5674 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5675 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5676 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5677 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5678 pa_def_spaces
[i
].segment
, 0);
5683 while (pa_def_subspaces
[i
].name
)
5686 int applicable
, subsegment
;
5687 asection
*segment
= NULL
;
5688 sd_chain_struct
*space
;
5690 /* Pick the right name for the new section and pick the right
5691 subsegment number. */
5692 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5694 name
= pa_def_subspaces
[i
].alias
;
5695 subsegment
= pa_def_subspaces
[i
].subsegment
;
5699 name
= pa_def_subspaces
[i
].name
;
5703 /* Create the new section. */
5704 segment
= subseg_new (name
, subsegment
);
5707 /* For SOM we want to replace the standard .text, .data, and .bss
5708 sections with our own. We also want to set BFD flags for
5709 all the built-in subspaces. */
5710 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5712 text_section
= segment
;
5713 applicable
= bfd_applicable_section_flags (stdoutput
);
5714 bfd_set_section_flags (stdoutput
, segment
,
5715 applicable
& (SEC_ALLOC
| SEC_LOAD
5716 | SEC_RELOC
| SEC_CODE
5718 | SEC_HAS_CONTENTS
));
5720 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5722 data_section
= segment
;
5723 applicable
= bfd_applicable_section_flags (stdoutput
);
5724 bfd_set_section_flags (stdoutput
, segment
,
5725 applicable
& (SEC_ALLOC
| SEC_LOAD
5727 | SEC_HAS_CONTENTS
));
5731 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5733 bss_section
= segment
;
5734 applicable
= bfd_applicable_section_flags (stdoutput
);
5735 bfd_set_section_flags (stdoutput
, segment
,
5736 applicable
& SEC_ALLOC
);
5738 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5740 applicable
= bfd_applicable_section_flags (stdoutput
);
5741 bfd_set_section_flags (stdoutput
, segment
,
5742 applicable
& (SEC_ALLOC
| SEC_LOAD
5745 | SEC_HAS_CONTENTS
));
5747 else if (!strcmp (pa_def_subspaces
[i
].name
, "$MILLICODE$")
5750 applicable
= bfd_applicable_section_flags (stdoutput
);
5751 bfd_set_section_flags (stdoutput
, segment
,
5752 applicable
& (SEC_ALLOC
| SEC_LOAD
5755 | SEC_HAS_CONTENTS
));
5757 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5759 applicable
= bfd_applicable_section_flags (stdoutput
);
5760 bfd_set_section_flags (stdoutput
, segment
,
5761 applicable
& (SEC_ALLOC
| SEC_LOAD
5764 | SEC_HAS_CONTENTS
));
5767 /* Find the space associated with this subspace. */
5768 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5769 def_space_index
].segment
);
5772 as_fatal (_("Internal error: Unable to find containing space for %s."),
5773 pa_def_subspaces
[i
].name
);
5776 create_new_subspace (space
, name
,
5777 pa_def_subspaces
[i
].loadable
,
5778 pa_def_subspaces
[i
].code_only
,
5779 pa_def_subspaces
[i
].common
,
5780 pa_def_subspaces
[i
].dup_common
,
5781 pa_def_subspaces
[i
].zero
,
5782 pa_def_subspaces
[i
].sort
,
5783 pa_def_subspaces
[i
].access
,
5784 pa_def_subspaces
[i
].space_index
,
5785 pa_def_subspaces
[i
].alignment
,
5786 pa_def_subspaces
[i
].quadrant
,
5794 /* Create a new space NAME, with the appropriate flags as defined
5795 by the given parameters. */
5797 static sd_chain_struct
*
5798 create_new_space (name
, spnum
, loadable
, defined
, private,
5799 sort
, seg
, user_defined
)
5809 sd_chain_struct
*chain_entry
;
5811 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5813 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
5816 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5817 strcpy (SPACE_NAME (chain_entry
), name
);
5818 SPACE_DEFINED (chain_entry
) = defined
;
5819 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5820 SPACE_SPNUM (chain_entry
) = spnum
;
5822 chain_entry
->sd_seg
= seg
;
5823 chain_entry
->sd_last_subseg
= -1;
5824 chain_entry
->sd_subspaces
= NULL
;
5825 chain_entry
->sd_next
= NULL
;
5827 /* Find spot for the new space based on its sort key. */
5828 if (!space_dict_last
)
5829 space_dict_last
= chain_entry
;
5831 if (space_dict_root
== NULL
)
5832 space_dict_root
= chain_entry
;
5835 sd_chain_struct
*chain_pointer
;
5836 sd_chain_struct
*prev_chain_pointer
;
5838 chain_pointer
= space_dict_root
;
5839 prev_chain_pointer
= NULL
;
5841 while (chain_pointer
)
5843 prev_chain_pointer
= chain_pointer
;
5844 chain_pointer
= chain_pointer
->sd_next
;
5847 /* At this point we've found the correct place to add the new
5848 entry. So add it and update the linked lists as appropriate. */
5849 if (prev_chain_pointer
)
5851 chain_entry
->sd_next
= chain_pointer
;
5852 prev_chain_pointer
->sd_next
= chain_entry
;
5856 space_dict_root
= chain_entry
;
5857 chain_entry
->sd_next
= chain_pointer
;
5860 if (chain_entry
->sd_next
== NULL
)
5861 space_dict_last
= chain_entry
;
5864 /* This is here to catch predefined spaces which do not get
5865 modified by the user's input. Another call is found at
5866 the bottom of pa_parse_space_stmt to handle cases where
5867 the user modifies a predefined space. */
5868 #ifdef obj_set_section_attributes
5869 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5875 /* Create a new subspace NAME, with the appropriate flags as defined
5876 by the given parameters.
5878 Add the new subspace to the subspace dictionary chain in numerical
5879 order as defined by the SORT entries. */
5881 static ssd_chain_struct
*
5882 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5883 dup_common
, is_zero
, sort
, access
, space_index
,
5884 alignment
, quadrant
, seg
)
5885 sd_chain_struct
*space
;
5887 int loadable
, code_only
, common
, dup_common
, is_zero
;
5895 ssd_chain_struct
*chain_entry
;
5897 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5899 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name
);
5901 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5902 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5904 /* Initialize subspace_defined. When we hit a .subspace directive
5905 we'll set it to 1 which "locks-in" the subspace attributes. */
5906 SUBSPACE_DEFINED (chain_entry
) = 0;
5908 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5909 chain_entry
->ssd_seg
= seg
;
5910 chain_entry
->ssd_next
= NULL
;
5912 /* Find spot for the new subspace based on its sort key. */
5913 if (space
->sd_subspaces
== NULL
)
5914 space
->sd_subspaces
= chain_entry
;
5917 ssd_chain_struct
*chain_pointer
;
5918 ssd_chain_struct
*prev_chain_pointer
;
5920 chain_pointer
= space
->sd_subspaces
;
5921 prev_chain_pointer
= NULL
;
5923 while (chain_pointer
)
5925 prev_chain_pointer
= chain_pointer
;
5926 chain_pointer
= chain_pointer
->ssd_next
;
5929 /* Now we have somewhere to put the new entry. Insert it and update
5931 if (prev_chain_pointer
)
5933 chain_entry
->ssd_next
= chain_pointer
;
5934 prev_chain_pointer
->ssd_next
= chain_entry
;
5938 space
->sd_subspaces
= chain_entry
;
5939 chain_entry
->ssd_next
= chain_pointer
;
5943 #ifdef obj_set_subsection_attributes
5944 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5951 /* Update the information for the given subspace based upon the
5952 various arguments. Return the modified subspace chain entry. */
5954 static ssd_chain_struct
*
5955 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5956 zero
, access
, space_index
, alignment
, quadrant
, section
)
5957 sd_chain_struct
*space
;
5971 ssd_chain_struct
*chain_entry
;
5973 chain_entry
= is_defined_subspace (name
);
5975 #ifdef obj_set_subsection_attributes
5976 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5983 /* Return the space chain entry for the space with the name NAME or
5984 NULL if no such space exists. */
5986 static sd_chain_struct
*
5987 is_defined_space (name
)
5990 sd_chain_struct
*chain_pointer
;
5992 for (chain_pointer
= space_dict_root
;
5994 chain_pointer
= chain_pointer
->sd_next
)
5996 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5997 return chain_pointer
;
6000 /* No mapping from segment to space was found. Return NULL. */
6004 /* Find and return the space associated with the given seg. If no mapping
6005 from the given seg to a space is found, then return NULL.
6007 Unlike subspaces, the number of spaces is not expected to grow much,
6008 so a linear exhaustive search is OK here. */
6010 static sd_chain_struct
*
6011 pa_segment_to_space (seg
)
6014 sd_chain_struct
*space_chain
;
6016 /* Walk through each space looking for the correct mapping. */
6017 for (space_chain
= space_dict_root
;
6019 space_chain
= space_chain
->sd_next
)
6021 if (space_chain
->sd_seg
== seg
)
6025 /* Mapping was not found. Return NULL. */
6029 /* Return the space chain entry for the subspace with the name NAME or
6030 NULL if no such subspace exists.
6032 Uses a linear search through all the spaces and subspaces, this may
6033 not be appropriate if we ever being placing each function in its
6036 static ssd_chain_struct
*
6037 is_defined_subspace (name
)
6040 sd_chain_struct
*space_chain
;
6041 ssd_chain_struct
*subspace_chain
;
6043 /* Walk through each space. */
6044 for (space_chain
= space_dict_root
;
6046 space_chain
= space_chain
->sd_next
)
6048 /* Walk through each subspace looking for a name which matches. */
6049 for (subspace_chain
= space_chain
->sd_subspaces
;
6051 subspace_chain
= subspace_chain
->ssd_next
)
6052 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
6053 return subspace_chain
;
6056 /* Subspace wasn't found. Return NULL. */
6060 /* Find and return the subspace associated with the given seg. If no
6061 mapping from the given seg to a subspace is found, then return NULL.
6063 If we ever put each procedure/function within its own subspace
6064 (to make life easier on the compiler and linker), then this will have
6065 to become more efficient. */
6067 static ssd_chain_struct
*
6068 pa_subsegment_to_subspace (seg
, subseg
)
6072 sd_chain_struct
*space_chain
;
6073 ssd_chain_struct
*subspace_chain
;
6075 /* Walk through each space. */
6076 for (space_chain
= space_dict_root
;
6078 space_chain
= space_chain
->sd_next
)
6080 if (space_chain
->sd_seg
== seg
)
6082 /* Walk through each subspace within each space looking for
6083 the correct mapping. */
6084 for (subspace_chain
= space_chain
->sd_subspaces
;
6086 subspace_chain
= subspace_chain
->ssd_next
)
6087 if (subspace_chain
->ssd_subseg
== (int) subseg
)
6088 return subspace_chain
;
6092 /* No mapping from subsegment to subspace found. Return NULL. */
6096 /* Given a number, try and find a space with the name number.
6098 Return a pointer to a space dictionary chain entry for the space
6099 that was found or NULL on failure. */
6101 static sd_chain_struct
*
6102 pa_find_space_by_number (number
)
6105 sd_chain_struct
*space_chain
;
6107 for (space_chain
= space_dict_root
;
6109 space_chain
= space_chain
->sd_next
)
6111 if (SPACE_SPNUM (space_chain
) == number
)
6115 /* No appropriate space found. Return NULL. */
6119 /* Return the starting address for the given subspace. If the starting
6120 address is unknown then return zero. */
6123 pa_subspace_start (space
, quadrant
)
6124 sd_chain_struct
*space
;
6128 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6129 is not correct for the PA OSF1 port. */
6130 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6132 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6140 /* FIXME. Needs documentation. */
6142 pa_next_subseg (space
)
6143 sd_chain_struct
*space
;
6146 space
->sd_last_subseg
++;
6147 return space
->sd_last_subseg
;
6150 /* Helper function for pa_stringer. Used to find the end of
6157 unsigned int c
= *s
& CHAR_MASK
;
6159 /* We must have a valid space and subspace. */
6160 pa_check_current_space_and_subspace ();
6173 /* Handle a .STRING type pseudo-op. */
6176 pa_stringer (append_zero
)
6179 char *s
, num_buf
[4];
6183 /* Preprocess the string to handle PA-specific escape sequences.
6184 For example, \xDD where DD is a hexidecimal number should be
6185 changed to \OOO where OOO is an octal number. */
6187 /* Skip the opening quote. */
6188 s
= input_line_pointer
+ 1;
6190 while (is_a_char (c
= pa_stringer_aux (s
++)))
6197 /* Handle \x<num>. */
6200 unsigned int number
;
6205 /* Get pas the 'x'. */
6207 for (num_digit
= 0, number
= 0, dg
= *s
;
6209 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6210 || (dg
>= 'A' && dg
<= 'F'));
6214 number
= number
* 16 + dg
- '0';
6215 else if (dg
>= 'a' && dg
<= 'f')
6216 number
= number
* 16 + dg
- 'a' + 10;
6218 number
= number
* 16 + dg
- 'A' + 10;
6228 sprintf (num_buf
, "%02o", number
);
6231 sprintf (num_buf
, "%03o", number
);
6234 for (i
= 0; i
<= num_digit
; i
++)
6235 s_start
[i
] = num_buf
[i
];
6239 /* This might be a "\"", skip over the escaped char. */
6246 stringer (append_zero
);
6247 pa_undefine_label ();
6250 /* Handle a .VERSION pseudo-op. */
6257 pa_undefine_label ();
6260 /* Handle a .COPYRIGHT pseudo-op. */
6263 pa_copyright (unused
)
6267 pa_undefine_label ();
6270 /* Just like a normal cons, but when finished we have to undefine
6271 the latest space label. */
6278 pa_undefine_label ();
6281 /* Switch to the data space. As usual delete our label. */
6287 current_space
= is_defined_space ("$PRIVATE$");
6289 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6291 pa_undefine_label ();
6294 /* Like float_cons, but we need to undefine our label. */
6297 pa_float_cons (float_type
)
6300 float_cons (float_type
);
6301 pa_undefine_label ();
6304 /* Like s_fill, but delete our label when finished. */
6310 /* We must have a valid space and subspace. */
6311 pa_check_current_space_and_subspace ();
6314 pa_undefine_label ();
6317 /* Like lcomm, but delete our label when finished. */
6320 pa_lcomm (needs_align
)
6323 /* We must have a valid space and subspace. */
6324 pa_check_current_space_and_subspace ();
6326 s_lcomm (needs_align
);
6327 pa_undefine_label ();
6330 /* Like lsym, but delete our label when finished. */
6336 /* We must have a valid space and subspace. */
6337 pa_check_current_space_and_subspace ();
6340 pa_undefine_label ();
6343 /* Switch to the text space. Like s_text, but delete our
6344 label when finished. */
6349 current_space
= is_defined_space ("$TEXT$");
6351 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6354 pa_undefine_label ();
6357 /* On the PA relocations which involve function symbols must not be
6358 adjusted. This so that the linker can know when/how to create argument
6359 relocation stubs for indirect calls and calls to static functions.
6361 "T" field selectors create DLT relative fixups for accessing
6362 globals and statics in PIC code; each DLT relative fixup creates
6363 an entry in the DLT table. The entries contain the address of
6364 the final target (eg accessing "foo" would create a DLT entry
6365 with the address of "foo").
6367 Unfortunately, the HP linker doesn't take into account any addend
6368 when generating the DLT; so accessing $LIT$+8 puts the address of
6369 $LIT$ into the DLT rather than the address of $LIT$+8.
6371 The end result is we can't perform relocation symbol reductions for
6372 any fixup which creates entries in the DLT (eg they use "T" field
6375 Reject reductions involving symbols with external scope; such
6376 reductions make life a living hell for object file editors.
6378 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6379 the code space. The SOM BFD backend doesn't know how to pull the
6380 right bits out of an instruction. */
6383 hppa_fix_adjustable (fixp
)
6386 struct hppa_fix_struct
*hppa_fix
;
6388 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6391 /* Reject reductions of symbols in 32bit relocs. */
6392 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6395 /* Reject reductions of symbols in sym1-sym2 expressions when
6396 the fixup will occur in a CODE subspace.
6398 XXX FIXME: Long term we probably want to reject all of these;
6399 for example reducing in the debug section would lose if we ever
6400 supported using the optimizing hp linker. */
6403 && (hppa_fix
->segment
->flags
& SEC_CODE
))
6405 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
6406 fixp
->fx_subsy
->sy_used_in_reloc
= 1;
6410 /* We can't adjust any relocs that use LR% and RR% field selectors.
6411 That confuses the HP linker. */
6412 if (hppa_fix
->fx_r_field
== e_lrsel
6413 || hppa_fix
->fx_r_field
== e_rrsel
6414 || hppa_fix
->fx_r_field
== e_nlrsel
)
6418 /* Reject reductions of symbols in DLT relative relocs,
6419 relocations with plabels. */
6420 if (hppa_fix
->fx_r_field
== e_tsel
6421 || hppa_fix
->fx_r_field
== e_ltsel
6422 || hppa_fix
->fx_r_field
== e_rtsel
6423 || hppa_fix
->fx_r_field
== e_psel
6424 || hppa_fix
->fx_r_field
== e_rpsel
6425 || hppa_fix
->fx_r_field
== e_lpsel
)
6428 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6431 /* Reject absolute calls (jumps). */
6432 if (hppa_fix
->fx_r_type
== R_HPPA_ABS_CALL
)
6435 /* Reject reductions of function symbols. */
6436 if (fixp
->fx_addsy
== 0
6437 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6443 /* Return nonzero if the fixup in FIXP will require a relocation,
6444 even it if appears that the fixup could be completely handled
6448 hppa_force_relocation (fixp
)
6451 struct hppa_fix_struct
*hppa_fixp
;
6454 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6456 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
6457 || fixp
->fx_r_type
== R_HPPA_BEGIN_BRTAB
6458 || fixp
->fx_r_type
== R_HPPA_END_BRTAB
6459 || fixp
->fx_r_type
== R_HPPA_BEGIN_TRY
6460 || fixp
->fx_r_type
== R_HPPA_END_TRY
6461 || (fixp
->fx_addsy
!= NULL
&& fixp
->fx_subsy
!= NULL
6462 && (hppa_fixp
->segment
->flags
& SEC_CODE
) != 0))
6466 #define arg_reloc_stub_needed(CALLER, CALLEE) \
6467 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6469 /* It is necessary to force PC-relative calls/jumps to have a relocation
6470 entry if they're going to need either a argument relocation or long
6471 call stub. FIXME. Can't we need the same for absolute calls? */
6472 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6473 && (arg_reloc_stub_needed (((obj_symbol_type
*)
6474 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6476 hppa_fixp
->fx_arg_reloc
)))
6478 distance
= (fixp
->fx_offset
+ S_GET_VALUE (fixp
->fx_addsy
)
6479 - md_pcrel_from (fixp
));
6480 /* Now check and see if we're going to need a long-branch stub. */
6481 if (fixp
->fx_r_type
== R_HPPA_PCREL_CALL
6482 && (distance
> 262143 || distance
< -262144))
6485 if (fixp
->fx_r_type
== R_HPPA_ABS_CALL
)
6487 #undef arg_reloc_stub_needed
6489 /* No need (yet) to force another relocations to be emitted. */
6493 /* Now for some ELF specific code. FIXME. */
6495 /* Mark the end of a function so that it's possible to compute
6496 the size of the function in hppa_elf_final_processing. */
6499 hppa_elf_mark_end_of_function ()
6501 /* ELF does not have EXIT relocations. All we do is create a
6502 temporary symbol marking the end of the function. */
6503 char *name
= (char *)
6504 xmalloc (strlen ("L$\001end_") +
6505 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6511 strcpy (name
, "L$\001end_");
6512 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6514 /* If we have a .exit followed by a .procend, then the
6515 symbol will have already been defined. */
6516 symbolP
= symbol_find (name
);
6519 /* The symbol has already been defined! This can
6520 happen if we have a .exit followed by a .procend.
6522 This is *not* an error. All we want to do is free
6523 the memory we just allocated for the name and continue. */
6528 /* symbol value should be the offset of the
6529 last instruction of the function */
6530 symbolP
= symbol_new (name
, now_seg
, (valueT
) (frag_now_fix () - 4),
6534 symbolP
->bsym
->flags
= BSF_LOCAL
;
6535 symbol_table_insert (symbolP
);
6539 last_call_info
->end_symbol
= symbolP
;
6541 as_bad (_("Symbol '%s' could not be created."), name
);
6545 as_bad (_("No memory for symbol name."));
6549 /* For ELF, this function serves one purpose: to setup the st_size
6550 field of STT_FUNC symbols. To do this, we need to scan the
6551 call_info structure list, determining st_size in by taking the
6552 difference in the address of the beginning/end marker symbols. */
6555 elf_hppa_final_processing ()
6557 struct call_info
*call_info_pointer
;
6559 for (call_info_pointer
= call_info_root
;
6561 call_info_pointer
= call_info_pointer
->ci_next
)
6563 elf_symbol_type
*esym
6564 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6565 esym
->internal_elf_sym
.st_size
=
6566 S_GET_VALUE (call_info_pointer
->end_symbol
)
6567 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;