1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "../bfd/libhppa.h"
31 #include "../bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".hppa_unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
63 /* Some local functions only used by ELF. */
64 static void pa_build_symextn_section
PARAMS ((void));
65 static void hppa_tc_make_symextn_section
PARAMS ((void));
69 /* Names of various debugging spaces/subspaces. */
70 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
71 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
72 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
73 #define UNWIND_SECTION_NAME "$UNWIND$"
75 /* Object file formats specify relocation types. */
76 typedef int reloc_type
;
78 /* SOM objects can have both a version string and a copyright string. */
79 #define obj_version obj_som_version
80 #define obj_copyright obj_som_copyright
82 /* Do not use space aliases. */
85 /* How to generate a relocation. */
86 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
88 /* Object file formats specify BFD symbol types. */
89 typedef som_symbol_type obj_symbol_type
;
92 /* Various structures and types used internally in tc-hppa.c. */
94 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
98 unsigned int cannot_unwind
:1;
99 unsigned int millicode
:1;
100 unsigned int millicode_save_rest
:1;
101 unsigned int region_desc
:2;
102 unsigned int save_sr
:2;
103 unsigned int entry_fr
:4;
104 unsigned int entry_gr
:5;
105 unsigned int args_stored
:1;
106 unsigned int call_fr
:5;
107 unsigned int call_gr
:5;
108 unsigned int save_sp
:1;
109 unsigned int save_rp
:1;
110 unsigned int save_rp_in_frame
:1;
111 unsigned int extn_ptr_defined
:1;
112 unsigned int cleanup_defined
:1;
114 unsigned int hpe_interrupt_marker
:1;
115 unsigned int hpux_interrupt_marker
:1;
116 unsigned int reserved
:3;
117 unsigned int frame_size
:27;
122 /* Starting and ending offsets of the region described by
124 unsigned int start_offset
;
125 unsigned int end_offset
;
126 struct unwind_desc descriptor
;
129 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
130 control the entry and exit code they generate. It is also used in
131 creation of the correct stack unwind descriptors.
133 NOTE: GAS does not support .enter and .leave for the generation of
134 prologues and epilogues. FIXME.
136 The fields in structure roughly correspond to the arguments available on the
137 .callinfo pseudo-op. */
141 /* The unwind descriptor being built. */
142 struct unwind_table ci_unwind
;
144 /* Name of this function. */
145 symbolS
*start_symbol
;
147 /* (temporary) symbol used to mark the end of this function. */
150 /* Next entry in the chain. */
151 struct call_info
*ci_next
;
154 /* Operand formats for FP instructions. Note not all FP instructions
155 allow all four formats to be used (for example fmpysub only allows
159 SGL
, DBL
, ILLEGAL_FMT
, QUAD
163 /* This fully describes the symbol types which may be attached to
164 an EXPORT or IMPORT directive. Only SOM uses this formation
165 (ELF has no need for it). */
169 SYMBOL_TYPE_ABSOLUTE
,
173 SYMBOL_TYPE_MILLICODE
,
175 SYMBOL_TYPE_PRI_PROG
,
176 SYMBOL_TYPE_SEC_PROG
,
180 /* This structure contains information needed to assemble
181 individual instructions. */
184 /* Holds the opcode after parsing by pa_ip. */
185 unsigned long opcode
;
187 /* Holds an expression associated with the current instruction. */
190 /* Does this instruction use PC-relative addressing. */
193 /* Floating point formats for operand1 and operand2. */
194 fp_operand_format fpof1
;
195 fp_operand_format fpof2
;
197 /* Holds the field selector for this instruction
198 (for example L%, LR%, etc). */
201 /* Holds any argument relocation bits associated with this
202 instruction. (instruction should be some sort of call). */
205 /* The format specification for this instruction. */
208 /* The relocation (if any) associated with this instruction. */
212 /* PA-89 floating point registers are arranged like this:
215 +--------------+--------------+
216 | 0 or 16L | 16 or 16R |
217 +--------------+--------------+
218 | 1 or 17L | 17 or 17R |
219 +--------------+--------------+
227 +--------------+--------------+
228 | 14 or 30L | 30 or 30R |
229 +--------------+--------------+
230 | 15 or 31L | 31 or 31R |
231 +--------------+--------------+
234 The following is a version of pa_parse_number that
235 handles the L/R notation and returns the correct
236 value to put into the instruction register field.
237 The correct value to put into the instruction is
238 encoded in the structure 'pa_89_fp_reg_struct'. */
240 struct pa_89_fp_reg_struct
242 /* The register number. */
249 /* Additional information needed to build argument relocation stubs. */
252 /* The argument relocation specification. */
253 unsigned int arg_reloc
;
255 /* Number of arguments. */
256 unsigned int arg_count
;
259 /* This structure defines an entry in the subspace dictionary
262 struct subspace_dictionary_chain
264 /* Nonzero if this space has been defined by the user code. */
265 unsigned int ssd_defined
;
267 /* Name of this subspace. */
270 /* GAS segment and subsegment associated with this subspace. */
274 /* Next space in the subspace dictionary chain. */
275 struct subspace_dictionary_chain
*ssd_next
;
278 typedef struct subspace_dictionary_chain ssd_chain_struct
;
280 /* This structure defines an entry in the subspace dictionary
283 struct space_dictionary_chain
285 /* Nonzero if this space has been defined by the user code or
286 as a default space. */
287 unsigned int sd_defined
;
289 /* Nonzero if this spaces has been defined by the user code. */
290 unsigned int sd_user_defined
;
292 /* The space number (or index). */
293 unsigned int sd_spnum
;
295 /* The name of this subspace. */
298 /* GAS segment to which this subspace corresponds. */
301 /* Current subsegment number being used. */
304 /* The chain of subspaces contained within this space. */
305 ssd_chain_struct
*sd_subspaces
;
307 /* The next entry in the space dictionary chain. */
308 struct space_dictionary_chain
*sd_next
;
311 typedef struct space_dictionary_chain sd_chain_struct
;
313 /* Structure for previous label tracking. Needed so that alignments,
314 callinfo declarations, etc can be easily attached to a particular
316 typedef struct label_symbol_struct
318 struct symbol
*lss_label
;
319 sd_chain_struct
*lss_space
;
320 struct label_symbol_struct
*lss_next
;
324 /* This structure defines attributes of the default subspace
325 dictionary entries. */
327 struct default_subspace_dict
329 /* Name of the subspace. */
332 /* FIXME. Is this still needed? */
335 /* Nonzero if this subspace is loadable. */
338 /* Nonzero if this subspace contains only code. */
341 /* Nonzero if this is a common subspace. */
344 /* Nonzero if this is a common subspace which allows symbols
345 to be multiply defined. */
348 /* Nonzero if this subspace should be zero filled. */
351 /* Sort key for this subspace. */
354 /* Access control bits for this subspace. Can represent RWX access
355 as well as privilege level changes for gateways. */
358 /* Index of containing space. */
361 /* Alignment (in bytes) of this subspace. */
364 /* Quadrant within space where this subspace should be loaded. */
367 /* An index into the default spaces array. */
370 /* An alias for this section (or NULL if no alias exists). */
373 /* Subsegment associated with this subspace. */
377 /* This structure defines attributes of the default space
378 dictionary entries. */
380 struct default_space_dict
382 /* Name of the space. */
385 /* Space number. It is possible to identify spaces within
386 assembly code numerically! */
389 /* Nonzero if this space is loadable. */
392 /* Nonzero if this space is "defined". FIXME is still needed */
395 /* Nonzero if this space can not be shared. */
398 /* Sort key for this space. */
401 /* Segment associated with this space. */
404 /* An alias for this section (or NULL if no alias exists). */
408 /* Extra information needed to perform fixups (relocations) on the PA. */
409 struct hppa_fix_struct
411 /* The field selector. */
412 enum hppa_reloc_field_selector_type fx_r_field
;
417 /* Format of fixup. */
420 /* Argument relocation bits. */
423 /* The unwind descriptor associated with this fixup. */
426 /* The segment this fixup appears in. */
430 /* Structure to hold information about predefined registers. */
438 /* This structure defines the mapping from a FP condition string
439 to a condition number which can be recorded in an instruction. */
446 /* This structure defines a mapping from a field selector
447 string to a field selector type. */
448 struct selector_entry
454 /* Prototypes for functions local to tc-hppa.c. */
456 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
457 static void pa_cons
PARAMS ((int));
458 static void pa_data
PARAMS ((int));
459 static void pa_float_cons
PARAMS ((int));
460 static void pa_fill
PARAMS ((int));
461 static void pa_lcomm
PARAMS ((int));
462 static void pa_lsym
PARAMS ((int));
463 static void pa_stringer
PARAMS ((int));
464 static void pa_text
PARAMS ((int));
465 static void pa_version
PARAMS ((int));
466 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
467 static int get_expression
PARAMS ((char *));
468 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
469 static int evaluate_absolute
PARAMS ((struct pa_it
*));
470 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
471 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
472 static int pa_parse_nullif
PARAMS ((char **));
473 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
475 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
476 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
477 static void pa_block
PARAMS ((int));
478 static void pa_call
PARAMS ((int));
479 static void pa_call_args
PARAMS ((struct call_desc
*));
480 static void pa_callinfo
PARAMS ((int));
481 static void pa_code
PARAMS ((int));
482 static void pa_comm
PARAMS ((int));
483 static void pa_copyright
PARAMS ((int));
484 static void pa_end
PARAMS ((int));
485 static void pa_enter
PARAMS ((int));
486 static void pa_entry
PARAMS ((int));
487 static void pa_equ
PARAMS ((int));
488 static void pa_exit
PARAMS ((int));
489 static void pa_export
PARAMS ((int));
490 static void pa_type_args
PARAMS ((symbolS
*, int));
491 static void pa_import
PARAMS ((int));
492 static void pa_label
PARAMS ((int));
493 static void pa_leave
PARAMS ((int));
494 static void pa_origin
PARAMS ((int));
495 static void pa_proc
PARAMS ((int));
496 static void pa_procend
PARAMS ((int));
497 static void pa_space
PARAMS ((int));
498 static void pa_spnum
PARAMS ((int));
499 static void pa_subspace
PARAMS ((int));
500 static void pa_param
PARAMS ((int));
501 static void pa_undefine_label
PARAMS ((void));
502 static int need_89_opcode
PARAMS ((struct pa_it
*,
503 struct pa_89_fp_reg_struct
*));
504 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
505 static label_symbol_struct
*pa_get_label
PARAMS ((void));
506 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, char,
509 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
514 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
515 char *, char, char, char,
516 char, char, char, int,
519 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
520 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
521 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
522 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
524 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
525 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
526 static void pa_ip
PARAMS ((char *));
527 static void fix_new_hppa
PARAMS ((fragS
*, int, short int, symbolS
*,
528 long, expressionS
*, int,
529 bfd_reloc_code_real_type
,
530 enum hppa_reloc_field_selector_type
,
532 static int is_end_of_statement
PARAMS ((void));
533 static int reg_name_search
PARAMS ((char *));
534 static int pa_chk_field_selector
PARAMS ((char **));
535 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
536 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
537 static void process_exit
PARAMS ((void));
538 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
539 static int log2
PARAMS ((int));
540 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
541 static unsigned int pa_stringer_aux
PARAMS ((char *));
542 static void pa_spaces_begin
PARAMS ((void));
543 static void hppa_elf_mark_end_of_function
PARAMS ((void));
545 /* File and gloally scoped variable declarations. */
547 /* Root and final entry in the space chain. */
548 static sd_chain_struct
*space_dict_root
;
549 static sd_chain_struct
*space_dict_last
;
551 /* The current space and subspace. */
552 static sd_chain_struct
*current_space
;
553 static ssd_chain_struct
*current_subspace
;
555 /* Root of the call_info chain. */
556 static struct call_info
*call_info_root
;
558 /* The last call_info (for functions) structure
559 seen so it can be associated with fixups and
561 static struct call_info
*last_call_info
;
563 /* The last call description (for actual calls). */
564 static struct call_desc last_call_desc
;
566 /* Relaxation isn't supported for the PA yet. */
567 const relax_typeS md_relax_table
[] =
570 /* Jumps are always the same size -- one instruction. */
571 int md_short_jump_size
= 4;
572 int md_long_jump_size
= 4;
574 /* handle of the OPCODE hash table */
575 static struct hash_control
*op_hash
= NULL
;
577 /* This array holds the chars that always start a comment. If the
578 pre-processor is disabled, these aren't very useful. */
579 const char comment_chars
[] = ";";
581 /* Table of pseudo ops for the PA. FIXME -- how many of these
582 are now redundant with the overall GAS and the object file
584 const pseudo_typeS md_pseudo_table
[] =
586 /* align pseudo-ops on the PA specify the actual alignment requested,
587 not the log2 of the requested alignment. */
588 {"align", s_align_bytes
, 8},
589 {"ALIGN", s_align_bytes
, 8},
590 {"block", pa_block
, 1},
591 {"BLOCK", pa_block
, 1},
592 {"blockz", pa_block
, 0},
593 {"BLOCKZ", pa_block
, 0},
594 {"byte", pa_cons
, 1},
595 {"BYTE", pa_cons
, 1},
596 {"call", pa_call
, 0},
597 {"CALL", pa_call
, 0},
598 {"callinfo", pa_callinfo
, 0},
599 {"CALLINFO", pa_callinfo
, 0},
600 {"code", pa_code
, 0},
601 {"CODE", pa_code
, 0},
602 {"comm", pa_comm
, 0},
603 {"COMM", pa_comm
, 0},
604 {"copyright", pa_copyright
, 0},
605 {"COPYRIGHT", pa_copyright
, 0},
606 {"data", pa_data
, 0},
607 {"DATA", pa_data
, 0},
608 {"double", pa_float_cons
, 'd'},
609 {"DOUBLE", pa_float_cons
, 'd'},
612 {"enter", pa_enter
, 0},
613 {"ENTER", pa_enter
, 0},
614 {"entry", pa_entry
, 0},
615 {"ENTRY", pa_entry
, 0},
618 {"exit", pa_exit
, 0},
619 {"EXIT", pa_exit
, 0},
620 {"export", pa_export
, 0},
621 {"EXPORT", pa_export
, 0},
622 {"fill", pa_fill
, 0},
623 {"FILL", pa_fill
, 0},
624 {"float", pa_float_cons
, 'f'},
625 {"FLOAT", pa_float_cons
, 'f'},
626 {"half", pa_cons
, 2},
627 {"HALF", pa_cons
, 2},
628 {"import", pa_import
, 0},
629 {"IMPORT", pa_import
, 0},
632 {"label", pa_label
, 0},
633 {"LABEL", pa_label
, 0},
634 {"lcomm", pa_lcomm
, 0},
635 {"LCOMM", pa_lcomm
, 0},
636 {"leave", pa_leave
, 0},
637 {"LEAVE", pa_leave
, 0},
638 {"long", pa_cons
, 4},
639 {"LONG", pa_cons
, 4},
640 {"lsym", pa_lsym
, 0},
641 {"LSYM", pa_lsym
, 0},
642 {"octa", pa_cons
, 16},
643 {"OCTA", pa_cons
, 16},
644 {"org", pa_origin
, 0},
645 {"ORG", pa_origin
, 0},
646 {"origin", pa_origin
, 0},
647 {"ORIGIN", pa_origin
, 0},
648 {"param", pa_param
, 0},
649 {"PARAM", pa_param
, 0},
650 {"proc", pa_proc
, 0},
651 {"PROC", pa_proc
, 0},
652 {"procend", pa_procend
, 0},
653 {"PROCEND", pa_procend
, 0},
654 {"quad", pa_cons
, 8},
655 {"QUAD", pa_cons
, 8},
658 {"short", pa_cons
, 2},
659 {"SHORT", pa_cons
, 2},
660 {"single", pa_float_cons
, 'f'},
661 {"SINGLE", pa_float_cons
, 'f'},
662 {"space", pa_space
, 0},
663 {"SPACE", pa_space
, 0},
664 {"spnum", pa_spnum
, 0},
665 {"SPNUM", pa_spnum
, 0},
666 {"string", pa_stringer
, 0},
667 {"STRING", pa_stringer
, 0},
668 {"stringz", pa_stringer
, 1},
669 {"STRINGZ", pa_stringer
, 1},
670 {"subspa", pa_subspace
, 0},
671 {"SUBSPA", pa_subspace
, 0},
672 {"text", pa_text
, 0},
673 {"TEXT", pa_text
, 0},
674 {"version", pa_version
, 0},
675 {"VERSION", pa_version
, 0},
676 {"word", pa_cons
, 4},
677 {"WORD", pa_cons
, 4},
681 /* This array holds the chars that only start a comment at the beginning of
682 a line. If the line seems to have the form '# 123 filename'
683 .line and .file directives will appear in the pre-processed output.
685 Note that input_file.c hand checks for '#' at the beginning of the
686 first line of the input file. This is because the compiler outputs
687 #NO_APP at the beginning of its output.
689 Also note that '/*' will always start a comment. */
690 const char line_comment_chars
[] = "#";
692 /* This array holds the characters which act as line separators. */
693 const char line_separator_chars
[] = "!";
695 /* Chars that can be used to separate mant from exp in floating point nums. */
696 const char EXP_CHARS
[] = "eE";
698 /* Chars that mean this number is a floating point constant.
699 As in 0f12.456 or 0d1.2345e12.
701 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
702 changed in read.c. Ideally it shouldn't hae to know abou it at
703 all, but nothing is ideal around here. */
704 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
706 static struct pa_it the_insn
;
708 /* Points to the end of an expression just parsed by get_expressoin
709 and friends. FIXME. This shouldn't be handled with a file-global
711 static char *expr_end
;
713 /* Nonzero if a .callinfo appeared within the current procedure. */
714 static int callinfo_found
;
716 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
717 static int within_entry_exit
;
719 /* Nonzero if the assembler is currently within a procedure definition. */
720 static int within_procedure
;
722 /* Handle on strucutre which keep track of the last symbol
723 seen in each subspace. */
724 static label_symbol_struct
*label_symbols_rootp
= NULL
;
726 /* Holds the last field selector. */
727 static int hppa_field_selector
;
729 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
730 static symbolS
*dummy_symbol
;
732 /* Nonzero if errors are to be printed. */
733 static int print_errors
= 1;
735 /* List of registers that are pre-defined:
737 Each general register has one predefined name of the form
738 %r<REGNUM> which has the value <REGNUM>.
740 Space and control registers are handled in a similar manner,
741 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
743 Likewise for the floating point registers, but of the form
744 %fr<REGNUM>. Floating point registers have additional predefined
745 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
746 again have the value <REGNUM>.
748 Many registers also have synonyms:
750 %r26 - %r23 have %arg0 - %arg3 as synonyms
751 %r28 - %r29 have %ret0 - %ret1 as synonyms
752 %r30 has %sp as a synonym
753 %r27 has %dp as a synonym
754 %r2 has %rp as a synonym
756 Almost every control register has a synonym; they are not listed
759 The table is sorted. Suitable for searching by a binary search. */
761 static const struct pd_reg pre_defined_registers
[] =
961 /* This table is sorted by order of the length of the string. This is
962 so we check for <> before we check for <. If we had a <> and checked
963 for < first, we would get a false match. */
964 static const struct fp_cond_map fp_cond_map
[] =
1000 static const struct selector_entry selector_table
[] =
1019 /* default space and subspace dictionaries */
1021 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1022 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1024 /* pre-defined subsegments (subspaces) for the HPPA. */
1025 #define SUBSEG_CODE 0
1026 #define SUBSEG_DATA 0
1027 #define SUBSEG_LIT 1
1028 #define SUBSEG_BSS 2
1029 #define SUBSEG_UNWIND 3
1030 #define SUBSEG_GDB_STRINGS 0
1031 #define SUBSEG_GDB_SYMBOLS 1
1033 static struct default_subspace_dict pa_def_subspaces
[] =
1035 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1036 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1037 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1038 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1040 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".hppa_unwind", SUBSEG_UNWIND
},
1042 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1045 static struct default_space_dict pa_def_spaces
[] =
1047 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1048 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1049 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1052 /* Misc local definitions used by the assembler. */
1054 /* Return nonzero if the string pointed to by S potentially represents
1055 a right or left half of a FP register */
1056 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1057 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1059 /* These macros are used to maintain spaces/subspaces. */
1060 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1061 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1062 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1063 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1065 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1066 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1068 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1069 main loop after insertion. */
1071 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1073 ((OPCODE) |= (FIELD) << (START)); \
1077 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1078 IGNORE is used to suppress the error message. */
1080 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1082 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1085 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1091 #define is_DP_relative(exp) \
1092 ((exp).X_op == O_subtract \
1093 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1095 #define is_PC_relative(exp) \
1096 ((exp).X_op == O_subtract \
1097 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1099 #define is_complex(exp) \
1100 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1102 /* Actual functions to implement the PA specific code for the assembler. */
1104 /* Returns a pointer to the label_symbol_struct for the current space.
1105 or NULL if no label_symbol_struct exists for the current space. */
1107 static label_symbol_struct
*
1110 label_symbol_struct
*label_chain
;
1111 sd_chain_struct
*space_chain
= current_space
;
1113 for (label_chain
= label_symbols_rootp
;
1115 label_chain
= label_chain
->lss_next
)
1116 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1122 /* Defines a label for the current space. If one is already defined,
1123 this function will replace it with the new label. */
1126 pa_define_label (symbol
)
1129 label_symbol_struct
*label_chain
= pa_get_label ();
1130 sd_chain_struct
*space_chain
= current_space
;
1133 label_chain
->lss_label
= symbol
;
1136 /* Create a new label entry and add it to the head of the chain. */
1138 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1139 label_chain
->lss_label
= symbol
;
1140 label_chain
->lss_space
= space_chain
;
1141 label_chain
->lss_next
= NULL
;
1143 if (label_symbols_rootp
)
1144 label_chain
->lss_next
= label_symbols_rootp
;
1146 label_symbols_rootp
= label_chain
;
1150 /* Removes a label definition for the current space.
1151 If there is no label_symbol_struct entry, then no action is taken. */
1154 pa_undefine_label ()
1156 label_symbol_struct
*label_chain
;
1157 label_symbol_struct
*prev_label_chain
= NULL
;
1158 sd_chain_struct
*space_chain
= current_space
;
1160 for (label_chain
= label_symbols_rootp
;
1162 label_chain
= label_chain
->lss_next
)
1164 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1166 /* Remove the label from the chain and free its memory. */
1167 if (prev_label_chain
)
1168 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1170 label_symbols_rootp
= label_chain
->lss_next
;
1175 prev_label_chain
= label_chain
;
1180 /* An HPPA-specific version of fix_new. This is required because the HPPA
1181 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1182 results in the creation of an instance of an hppa_fix_struct. An
1183 hppa_fix_struct stores the extra information along with a pointer to the
1184 original fixS. This is attached to the original fixup via the
1185 tc_fix_data field. */
1188 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1189 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1193 symbolS
*add_symbol
;
1197 bfd_reloc_code_real_type r_type
;
1198 enum hppa_reloc_field_selector_type r_field
;
1205 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1206 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1209 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1211 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1212 new_fix
->tc_fix_data
= hppa_fix
;
1213 hppa_fix
->fx_r_type
= r_type
;
1214 hppa_fix
->fx_r_field
= r_field
;
1215 hppa_fix
->fx_r_format
= r_format
;
1216 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1217 hppa_fix
->segment
= now_seg
;
1220 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1222 /* If necessary call BFD backend function to attach the
1223 unwind bits to the target dependent parts of a BFD symbol.
1225 #ifdef obj_attach_unwind_info
1226 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1230 /* foo-$global$ is used to access non-automatic storage. $global$
1231 is really just a marker and has served its purpose, so eliminate
1232 it now so as not to confuse write.c. */
1233 if (new_fix
->fx_subsy
1234 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1235 new_fix
->fx_subsy
= NULL
;
1238 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1239 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1242 parse_cons_expression_hppa (exp
)
1245 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1249 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1250 hppa_field_selector is set by the parse_cons_expression_hppa. */
1253 cons_fix_new_hppa (frag
, where
, size
, exp
)
1259 unsigned int rel_type
;
1261 if (is_DP_relative (*exp
))
1262 rel_type
= R_HPPA_GOTOFF
;
1263 else if (is_complex (*exp
))
1264 rel_type
= R_HPPA_COMPLEX
;
1268 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1269 as_warn ("Invalid field selector. Assuming F%%.");
1271 fix_new_hppa (frag
, where
, size
,
1272 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1273 hppa_field_selector
, 32, 0, (char *) 0);
1275 /* Reset field selector to its default state. */
1276 hppa_field_selector
= 0;
1279 /* This function is called once, at assembler startup time. It should
1280 set up all the tables, etc. that the MD part of the assembler will need. */
1285 const char *retval
= NULL
;
1289 last_call_info
= NULL
;
1290 call_info_root
= NULL
;
1292 /* Folding of text and data segments fails miserably on the PA.
1293 Warn user and disable "-R" option. */
1296 as_warn ("-R option not supported on this target.");
1297 flag_readonly_data_in_text
= 0;
1303 op_hash
= hash_new ();
1305 while (i
< NUMOPCODES
)
1307 const char *name
= pa_opcodes
[i
].name
;
1308 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1309 if (retval
!= NULL
&& *retval
!= '\0')
1311 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1316 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1317 != pa_opcodes
[i
].match
)
1319 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1320 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1325 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1329 as_fatal ("Broken assembler. No assembly attempted.");
1331 /* SOM will change text_section. To make sure we never put
1332 anything into the old one switch to the new one now. */
1333 subseg_set (text_section
, 0);
1335 dummy_symbol
= symbol_find_or_make ("L$dummy");
1336 S_SET_SEGMENT (dummy_symbol
, text_section
);
1339 /* Assemble a single instruction storing it into a frag. */
1346 /* The had better be something to assemble. */
1349 /* If we are within a procedure definition, make sure we've
1350 defined a label for the procedure; handle case where the
1351 label was defined after the .PROC directive. */
1352 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1354 label_symbol_struct
*label_symbol
= pa_get_label ();
1358 if (label_symbol
->lss_label
)
1360 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1361 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1364 as_bad ("Missing function name for .PROC (corrupted label chain)");
1367 as_bad ("Missing function name for .PROC");
1370 /* Assemble the instruction. Results are saved into "the_insn". */
1373 /* Get somewhere to put the assembled instrution. */
1376 /* Output the opcode. */
1377 md_number_to_chars (to
, the_insn
.opcode
, 4);
1379 /* If necessary output more stuff. */
1380 if (the_insn
.reloc
!= R_HPPA_NONE
)
1381 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1382 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1383 the_insn
.reloc
, the_insn
.field_selector
,
1384 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1387 /* Do the real work for assembling a single instruction. Store results
1388 into the global "the_insn" variable. */
1394 char *error_message
= "";
1395 char *s
, c
, *argstart
, *name
, *save_s
;
1399 int cmpltr
, nullif
, flag
, cond
, num
;
1400 unsigned long opcode
;
1401 struct pa_opcode
*insn
;
1403 /* Skip to something interesting. */
1404 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1423 as_bad ("Unknown opcode: `%s'", str
);
1429 /* Convert everything into lower case. */
1432 if (isupper (*save_s
))
1433 *save_s
= tolower (*save_s
);
1437 /* Look up the opcode in the has table. */
1438 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1440 as_bad ("Unknown opcode: `%s'", str
);
1449 /* Mark the location where arguments for the instruction start, then
1450 start processing them. */
1454 /* Do some initialization. */
1455 opcode
= insn
->match
;
1456 bzero (&the_insn
, sizeof (the_insn
));
1458 the_insn
.reloc
= R_HPPA_NONE
;
1460 /* Build the opcode, checking as we go to make
1461 sure that the operands match. */
1462 for (args
= insn
->args
;; ++args
)
1467 /* End of arguments. */
1483 /* These must match exactly. */
1492 /* Handle a 5 bit register or control register field at 10. */
1495 num
= pa_parse_number (&s
, 0);
1496 CHECK_FIELD (num
, 31, 0, 0);
1497 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1499 /* Handle a 5 bit register field at 15. */
1501 num
= pa_parse_number (&s
, 0);
1502 CHECK_FIELD (num
, 31, 0, 0);
1503 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1505 /* Handle a 5 bit register field at 31. */
1508 num
= pa_parse_number (&s
, 0);
1509 CHECK_FIELD (num
, 31, 0, 0);
1510 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1512 /* Handle a 5 bit field length at 31. */
1514 num
= pa_get_absolute_expression (&the_insn
, &s
);
1516 CHECK_FIELD (num
, 32, 1, 0);
1517 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1519 /* Handle a 5 bit immediate at 15. */
1521 num
= pa_get_absolute_expression (&the_insn
, &s
);
1523 CHECK_FIELD (num
, 15, -16, 0);
1524 low_sign_unext (num
, 5, &num
);
1525 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1527 /* Handle a 5 bit immediate at 31. */
1529 num
= pa_get_absolute_expression (&the_insn
, &s
);
1531 CHECK_FIELD (num
, 15, -16, 0)
1532 low_sign_unext (num
, 5, &num
);
1533 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1535 /* Handle an unsigned 5 bit immediate at 31. */
1537 num
= pa_get_absolute_expression (&the_insn
, &s
);
1539 CHECK_FIELD (num
, 31, 0, 0);
1540 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1542 /* Handle an unsigned 5 bit immediate at 15. */
1544 num
= pa_get_absolute_expression (&the_insn
, &s
);
1546 CHECK_FIELD (num
, 31, 0, 0);
1547 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1549 /* Handle a 2 bit space identifier at 17. */
1551 num
= pa_parse_number (&s
, 0);
1552 CHECK_FIELD (num
, 3, 0, 1);
1553 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1555 /* Handle a 3 bit space identifier at 18. */
1557 num
= pa_parse_number (&s
, 0);
1558 CHECK_FIELD (num
, 7, 0, 1);
1559 dis_assemble_3 (num
, &num
);
1560 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1562 /* Handle a completer for an indexing load or store. */
1568 while (*s
== ',' && i
< 2)
1571 if (strncasecmp (s
, "sm", 2) == 0)
1578 else if (strncasecmp (s
, "m", 1) == 0)
1580 else if (strncasecmp (s
, "s", 1) == 0)
1583 as_bad ("Invalid Indexed Load Completer.");
1588 as_bad ("Invalid Indexed Load Completer Syntax.");
1590 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1593 /* Handle a short load/store completer. */
1601 if (strncasecmp (s
, "ma", 2) == 0)
1606 else if (strncasecmp (s
, "mb", 2) == 0)
1612 as_bad ("Invalid Short Load/Store Completer.");
1616 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1619 /* Handle a stbys completer. */
1625 while (*s
== ',' && i
< 2)
1628 if (strncasecmp (s
, "m", 1) == 0)
1630 else if (strncasecmp (s
, "b", 1) == 0)
1632 else if (strncasecmp (s
, "e", 1) == 0)
1635 as_bad ("Invalid Store Bytes Short Completer");
1640 as_bad ("Invalid Store Bytes Short Completer");
1642 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1645 /* Handle a non-negated compare/stubtract condition. */
1647 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1650 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1653 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1655 /* Handle a negated or non-negated compare/subtract condition. */
1658 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1662 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1665 as_bad ("Invalid Compare/Subtract Condition.");
1670 /* Negated condition requires an opcode change. */
1674 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1676 /* Handle a negated or non-negated add condition. */
1679 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1683 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1686 as_bad ("Invalid Compare/Subtract Condition");
1691 /* Negated condition requires an opcode change. */
1695 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1697 /* Handle a compare/subtract condition. */
1704 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1709 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1712 as_bad ("Invalid Compare/Subtract Condition");
1716 opcode
|= cmpltr
<< 13;
1717 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1719 /* Handle a non-negated add condition. */
1728 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1732 if (strcmp (name
, "=") == 0)
1734 else if (strcmp (name
, "<") == 0)
1736 else if (strcmp (name
, "<=") == 0)
1738 else if (strcasecmp (name
, "nuv") == 0)
1740 else if (strcasecmp (name
, "znv") == 0)
1742 else if (strcasecmp (name
, "sv") == 0)
1744 else if (strcasecmp (name
, "od") == 0)
1746 else if (strcasecmp (name
, "n") == 0)
1748 else if (strcasecmp (name
, "tr") == 0)
1753 else if (strcmp (name
, "<>") == 0)
1758 else if (strcmp (name
, ">=") == 0)
1763 else if (strcmp (name
, ">") == 0)
1768 else if (strcasecmp (name
, "uv") == 0)
1773 else if (strcasecmp (name
, "vnz") == 0)
1778 else if (strcasecmp (name
, "nsv") == 0)
1783 else if (strcasecmp (name
, "ev") == 0)
1789 as_bad ("Invalid Add Condition: %s", name
);
1792 nullif
= pa_parse_nullif (&s
);
1793 opcode
|= nullif
<< 1;
1794 opcode
|= cmpltr
<< 13;
1795 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1797 /* HANDLE a logical instruction condition. */
1805 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1809 if (strcmp (name
, "=") == 0)
1811 else if (strcmp (name
, "<") == 0)
1813 else if (strcmp (name
, "<=") == 0)
1815 else if (strcasecmp (name
, "od") == 0)
1817 else if (strcasecmp (name
, "tr") == 0)
1822 else if (strcmp (name
, "<>") == 0)
1827 else if (strcmp (name
, ">=") == 0)
1832 else if (strcmp (name
, ">") == 0)
1837 else if (strcasecmp (name
, "ev") == 0)
1843 as_bad ("Invalid Logical Instruction Condition.");
1846 opcode
|= cmpltr
<< 13;
1847 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1849 /* Handle a unit instruction condition. */
1856 if (strncasecmp (s
, "sbz", 3) == 0)
1861 else if (strncasecmp (s
, "shz", 3) == 0)
1866 else if (strncasecmp (s
, "sdc", 3) == 0)
1871 else if (strncasecmp (s
, "sbc", 3) == 0)
1876 else if (strncasecmp (s
, "shc", 3) == 0)
1881 else if (strncasecmp (s
, "tr", 2) == 0)
1887 else if (strncasecmp (s
, "nbz", 3) == 0)
1893 else if (strncasecmp (s
, "nhz", 3) == 0)
1899 else if (strncasecmp (s
, "ndc", 3) == 0)
1905 else if (strncasecmp (s
, "nbc", 3) == 0)
1911 else if (strncasecmp (s
, "nhc", 3) == 0)
1918 as_bad ("Invalid Logical Instruction Condition.");
1920 opcode
|= cmpltr
<< 13;
1921 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1923 /* Handle a shift/extract/deposit condition. */
1931 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1935 if (strcmp (name
, "=") == 0)
1937 else if (strcmp (name
, "<") == 0)
1939 else if (strcasecmp (name
, "od") == 0)
1941 else if (strcasecmp (name
, "tr") == 0)
1943 else if (strcmp (name
, "<>") == 0)
1945 else if (strcmp (name
, ">=") == 0)
1947 else if (strcasecmp (name
, "ev") == 0)
1949 /* Handle movb,n. Put things back the way they were.
1950 This includes moving s back to where it started. */
1951 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1958 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1961 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1963 /* Handle bvb and bb conditions. */
1969 if (strncmp (s
, "<", 1) == 0)
1974 else if (strncmp (s
, ">=", 2) == 0)
1980 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1982 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1984 /* Handle a system control completer. */
1986 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
1994 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
1996 /* Handle a nullification completer for branch instructions. */
1998 nullif
= pa_parse_nullif (&s
);
1999 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2001 /* Handle a 11 bit immediate at 31. */
2003 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2006 if (the_insn
.exp
.X_op
== O_constant
)
2008 num
= evaluate_absolute (&the_insn
);
2009 CHECK_FIELD (num
, 1023, -1024, 0);
2010 low_sign_unext (num
, 11, &num
);
2011 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2015 if (is_DP_relative (the_insn
.exp
))
2016 the_insn
.reloc
= R_HPPA_GOTOFF
;
2017 else if (is_PC_relative (the_insn
.exp
))
2018 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2019 else if (is_complex (the_insn
.exp
))
2020 the_insn
.reloc
= R_HPPA_COMPLEX
;
2022 the_insn
.reloc
= R_HPPA
;
2023 the_insn
.format
= 11;
2027 /* Handle a 14 bit immediate at 31. */
2029 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2032 if (the_insn
.exp
.X_op
== O_constant
)
2034 num
= evaluate_absolute (&the_insn
);
2035 CHECK_FIELD (num
, 8191, -8192, 0);
2036 low_sign_unext (num
, 14, &num
);
2037 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2041 if (is_DP_relative (the_insn
.exp
))
2042 the_insn
.reloc
= R_HPPA_GOTOFF
;
2043 else if (is_PC_relative (the_insn
.exp
))
2044 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2045 else if (is_complex (the_insn
.exp
))
2046 the_insn
.reloc
= R_HPPA_COMPLEX
;
2048 the_insn
.reloc
= R_HPPA
;
2049 the_insn
.format
= 14;
2053 /* Handle a 21 bit immediate at 31. */
2055 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2058 if (the_insn
.exp
.X_op
== O_constant
)
2060 num
= evaluate_absolute (&the_insn
);
2061 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2062 dis_assemble_21 (num
, &num
);
2063 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2067 if (is_DP_relative (the_insn
.exp
))
2068 the_insn
.reloc
= R_HPPA_GOTOFF
;
2069 else if (is_PC_relative (the_insn
.exp
))
2070 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2071 else if (is_complex (the_insn
.exp
))
2072 the_insn
.reloc
= R_HPPA_COMPLEX
;
2074 the_insn
.reloc
= R_HPPA
;
2075 the_insn
.format
= 21;
2079 /* Handle a 12 bit branch displacement. */
2081 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2085 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2087 unsigned int w1
, w
, result
;
2089 num
= evaluate_absolute (&the_insn
);
2092 as_bad ("Branch to unaligned address");
2095 CHECK_FIELD (num
, 8191, -8192, 0);
2096 sign_unext ((num
- 8) >> 2, 12, &result
);
2097 dis_assemble_12 (result
, &w1
, &w
);
2098 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2102 if (is_complex (the_insn
.exp
))
2103 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2105 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2106 the_insn
.format
= 12;
2107 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2108 bzero (&last_call_desc
, sizeof (struct call_desc
));
2113 /* Handle a 17 bit branch displacement. */
2115 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2119 if (!the_insn
.exp
.X_add_symbol
2120 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2123 unsigned int w2
, w1
, w
, result
;
2125 num
= evaluate_absolute (&the_insn
);
2128 as_bad ("Branch to unaligned address");
2131 CHECK_FIELD (num
, 262143, -262144, 0);
2133 if (the_insn
.exp
.X_add_symbol
)
2136 sign_unext (num
>> 2, 17, &result
);
2137 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2138 INSERT_FIELD_AND_CONTINUE (opcode
,
2139 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2143 if (is_complex (the_insn
.exp
))
2144 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2146 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2147 the_insn
.format
= 17;
2148 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2149 bzero (&last_call_desc
, sizeof (struct call_desc
));
2153 /* Handle an absolute 17 bit branch target. */
2155 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2159 if (!the_insn
.exp
.X_add_symbol
2160 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2163 unsigned int w2
, w1
, w
, result
;
2165 num
= evaluate_absolute (&the_insn
);
2168 as_bad ("Branch to unaligned address");
2171 CHECK_FIELD (num
, 262143, -262144, 0);
2173 if (the_insn
.exp
.X_add_symbol
)
2176 sign_unext (num
>> 2, 17, &result
);
2177 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2178 INSERT_FIELD_AND_CONTINUE (opcode
,
2179 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2183 if (is_complex (the_insn
.exp
))
2184 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2186 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2187 the_insn
.format
= 17;
2191 /* Handle a 5 bit shift count at 26. */
2193 num
= pa_get_absolute_expression (&the_insn
, &s
);
2195 CHECK_FIELD (num
, 31, 0, 0);
2196 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2198 /* Handle a 5 bit bit position at 26. */
2200 num
= pa_get_absolute_expression (&the_insn
, &s
);
2202 CHECK_FIELD (num
, 31, 0, 0);
2203 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2205 /* Handle a 5 bit immediate at 10. */
2207 num
= pa_get_absolute_expression (&the_insn
, &s
);
2209 CHECK_FIELD (num
, 31, 0, 0);
2210 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2212 /* Handle a 13 bit immediate at 18. */
2214 num
= pa_get_absolute_expression (&the_insn
, &s
);
2216 CHECK_FIELD (num
, 4095, -4096, 0);
2217 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2219 /* Handle a 26 bit immediate at 31. */
2221 num
= pa_get_absolute_expression (&the_insn
, &s
);
2223 CHECK_FIELD (num
, 671108864, 0, 0);
2224 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2226 /* Handle a 3 bit SFU identifier at 25. */
2228 num
= pa_get_absolute_expression (&the_insn
, &s
);
2230 CHECK_FIELD (num
, 7, 0, 0);
2231 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2233 /* We don't support any of these. FIXME. */
2240 /* Handle a source FP operand format completer. */
2242 flag
= pa_parse_fp_format (&s
);
2243 the_insn
.fpof1
= flag
;
2244 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2246 /* Handle a destination FP operand format completer. */
2248 /* pa_parse_format needs the ',' prefix. */
2250 flag
= pa_parse_fp_format (&s
);
2251 the_insn
.fpof2
= flag
;
2252 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2254 /* Handle FP compare conditions. */
2256 cond
= pa_parse_fp_cmp_cond (&s
);
2257 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2259 /* Handle L/R register halves like 't'. */
2262 struct pa_89_fp_reg_struct result
;
2264 pa_parse_number (&s
, &result
);
2265 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2266 opcode
|= result
.number_part
;
2268 /* 0x30 opcodes are FP arithmetic operation opcodes
2269 and need to be turned into 0x38 opcodes. This
2270 is not necessary for loads/stores. */
2271 if (need_89_opcode (&the_insn
, &result
)
2272 && ((opcode
& 0xfc000000) == 0x30000000))
2275 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2278 /* Handle L/R register halves like 'b'. */
2281 struct pa_89_fp_reg_struct result
;
2283 pa_parse_number (&s
, &result
);
2284 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2285 opcode
|= result
.number_part
<< 21;
2286 if (need_89_opcode (&the_insn
, &result
))
2288 opcode
|= (result
.l_r_select
& 1) << 7;
2294 /* Handle L/R register halves like 'x'. */
2297 struct pa_89_fp_reg_struct result
;
2299 pa_parse_number (&s
, &result
);
2300 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2301 opcode
|= (result
.number_part
& 0x1f) << 16;
2302 if (need_89_opcode (&the_insn
, &result
))
2304 opcode
|= (result
.l_r_select
& 1) << 12;
2310 /* Handle a 5 bit register field at 10. */
2313 struct pa_89_fp_reg_struct result
;
2315 pa_parse_number (&s
, &result
);
2316 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2317 if (the_insn
.fpof1
== SGL
)
2319 result
.number_part
&= 0xF;
2320 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2322 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2325 /* Handle a 5 bit register field at 15. */
2328 struct pa_89_fp_reg_struct result
;
2330 pa_parse_number (&s
, &result
);
2331 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2332 if (the_insn
.fpof1
== SGL
)
2334 result
.number_part
&= 0xF;
2335 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2337 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2340 /* Handle a 5 bit register field at 31. */
2343 struct pa_89_fp_reg_struct result
;
2345 pa_parse_number (&s
, &result
);
2346 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2347 if (the_insn
.fpof1
== SGL
)
2349 result
.number_part
&= 0xF;
2350 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2352 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2355 /* Handle a 5 bit register field at 20. */
2358 struct pa_89_fp_reg_struct result
;
2360 pa_parse_number (&s
, &result
);
2361 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2362 if (the_insn
.fpof1
== SGL
)
2364 result
.number_part
&= 0xF;
2365 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2367 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2370 /* Handle a 5 bit register field at 25. */
2373 struct pa_89_fp_reg_struct result
;
2375 pa_parse_number (&s
, &result
);
2376 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2377 if (the_insn
.fpof1
== SGL
)
2379 result
.number_part
&= 0xF;
2380 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2382 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2385 /* Handle a floating point operand format at 26.
2386 Only allows single and double precision. */
2388 flag
= pa_parse_fp_format (&s
);
2394 the_insn
.fpof1
= flag
;
2400 as_bad ("Invalid Floating Point Operand Format.");
2410 /* Check if the args matched. */
2413 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2414 && !strcmp (insn
->name
, insn
[1].name
))
2422 as_bad ("Invalid operands %s", error_message
);
2429 the_insn
.opcode
= opcode
;
2432 /* Turn a string in input_line_pointer into a floating point constant of type
2433 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2434 emitted is stored in *sizeP . An error message or NULL is returned. */
2436 #define MAX_LITTLENUMS 6
2439 md_atof (type
, litP
, sizeP
)
2445 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2446 LITTLENUM_TYPE
*wordP
;
2478 return "Bad call to MD_ATOF()";
2480 t
= atof_ieee (input_line_pointer
, type
, words
);
2482 input_line_pointer
= t
;
2483 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2484 for (wordP
= words
; prec
--;)
2486 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2487 litP
+= sizeof (LITTLENUM_TYPE
);
2492 /* Write out big-endian. */
2495 md_number_to_chars (buf
, val
, n
)
2500 number_to_chars_bigendian (buf
, val
, n
);
2503 /* Translate internal representation of relocation info to BFD target
2507 tc_gen_reloc (section
, fixp
)
2512 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
2513 bfd_reloc_code_real_type code
;
2514 static int unwind_reloc_fixp_cnt
= 0;
2515 static arelent
*unwind_reloc_entryP
= NULL
;
2516 static arelent
*no_relocs
= NULL
;
2518 bfd_reloc_code_real_type
**codes
;
2522 if (fixp
->fx_addsy
== 0)
2524 assert (hppa_fixp
!= 0);
2525 assert (section
!= 0);
2528 /* Yuk. I would really like to push all this ELF specific unwind
2529 crud into BFD and the linker. That's how SOM does it -- and
2530 if we could make ELF emulate that then we could share more code
2531 in GAS (and potentially a gnu-linker later).
2533 Unwind section relocations are handled in a special way.
2534 The relocations for the .unwind section are originally
2535 built in the usual way. That is, for each unwind table
2536 entry there are two relocations: one for the beginning of
2537 the function and one for the end.
2539 The first time we enter this function we create a
2540 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2541 of the relocation is initialized to 0. Each additional
2542 pair of times this function is called for the unwind
2543 section represents an additional unwind table entry. Thus,
2544 the addend of the relocation should end up to be the number
2545 of unwind table entries. */
2546 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2548 if (unwind_reloc_entryP
== NULL
)
2550 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2552 assert (reloc
!= 0);
2553 unwind_reloc_entryP
= reloc
;
2554 unwind_reloc_fixp_cnt
++;
2555 unwind_reloc_entryP
->address
2556 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2557 /* A pointer to any function will do. We only
2558 need one to tell us what section the unwind
2559 relocations are for. */
2560 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2561 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2562 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2563 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2564 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2565 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2566 sizeof (arelent
*) * 2);
2567 assert (relocs
!= 0);
2568 relocs
[0] = unwind_reloc_entryP
;
2572 unwind_reloc_fixp_cnt
++;
2573 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2579 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2580 assert (reloc
!= 0);
2582 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2583 codes
= hppa_gen_reloc_type (stdoutput
,
2585 hppa_fixp
->fx_r_format
,
2586 hppa_fixp
->fx_r_field
);
2588 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2591 relocs
= (arelent
**)
2592 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2593 assert (relocs
!= 0);
2595 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2596 sizeof (arelent
) * n_relocs
);
2598 assert (reloc
!= 0);
2600 for (i
= 0; i
< n_relocs
; i
++)
2601 relocs
[i
] = &reloc
[i
];
2603 relocs
[n_relocs
] = NULL
;
2606 switch (fixp
->fx_r_type
)
2608 case R_HPPA_COMPLEX
:
2609 case R_HPPA_COMPLEX_PCREL_CALL
:
2610 case R_HPPA_COMPLEX_ABS_CALL
:
2611 assert (n_relocs
== 5);
2613 for (i
= 0; i
< n_relocs
; i
++)
2615 reloc
[i
].sym_ptr_ptr
= NULL
;
2616 reloc
[i
].address
= 0;
2617 reloc
[i
].addend
= 0;
2618 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2619 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2622 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2623 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2624 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2626 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2627 reloc
[3].addend
= fixp
->fx_addnumber
;
2628 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2629 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2630 reloc
[1].addend
= fixp
->fx_addnumber
;
2635 assert (n_relocs
== 1);
2639 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2640 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2641 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2642 reloc
->addend
= 0; /* default */
2644 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2646 /* Now, do any processing that is dependent on the relocation type. */
2649 case R_HPPA_PLABEL_32
:
2650 case R_HPPA_PLABEL_11
:
2651 case R_HPPA_PLABEL_14
:
2652 case R_HPPA_PLABEL_L21
:
2653 case R_HPPA_PLABEL_R11
:
2654 case R_HPPA_PLABEL_R14
:
2655 /* For plabel relocations, the addend of the
2656 relocation should be either 0 (no static link) or 2
2657 (static link required).
2659 FIXME: We always assume no static link! */
2663 case R_HPPA_ABS_CALL_11
:
2664 case R_HPPA_ABS_CALL_14
:
2665 case R_HPPA_ABS_CALL_17
:
2666 case R_HPPA_ABS_CALL_L21
:
2667 case R_HPPA_ABS_CALL_R11
:
2668 case R_HPPA_ABS_CALL_R14
:
2669 case R_HPPA_ABS_CALL_R17
:
2670 case R_HPPA_ABS_CALL_LS21
:
2671 case R_HPPA_ABS_CALL_RS11
:
2672 case R_HPPA_ABS_CALL_RS14
:
2673 case R_HPPA_ABS_CALL_RS17
:
2674 case R_HPPA_ABS_CALL_LD21
:
2675 case R_HPPA_ABS_CALL_RD11
:
2676 case R_HPPA_ABS_CALL_RD14
:
2677 case R_HPPA_ABS_CALL_RD17
:
2678 case R_HPPA_ABS_CALL_LR21
:
2679 case R_HPPA_ABS_CALL_RR14
:
2680 case R_HPPA_ABS_CALL_RR17
:
2682 case R_HPPA_PCREL_CALL_11
:
2683 case R_HPPA_PCREL_CALL_14
:
2684 case R_HPPA_PCREL_CALL_17
:
2685 case R_HPPA_PCREL_CALL_L21
:
2686 case R_HPPA_PCREL_CALL_R11
:
2687 case R_HPPA_PCREL_CALL_R14
:
2688 case R_HPPA_PCREL_CALL_R17
:
2689 case R_HPPA_PCREL_CALL_LS21
:
2690 case R_HPPA_PCREL_CALL_RS11
:
2691 case R_HPPA_PCREL_CALL_RS14
:
2692 case R_HPPA_PCREL_CALL_RS17
:
2693 case R_HPPA_PCREL_CALL_LD21
:
2694 case R_HPPA_PCREL_CALL_RD11
:
2695 case R_HPPA_PCREL_CALL_RD14
:
2696 case R_HPPA_PCREL_CALL_RD17
:
2697 case R_HPPA_PCREL_CALL_LR21
:
2698 case R_HPPA_PCREL_CALL_RR14
:
2699 case R_HPPA_PCREL_CALL_RR17
:
2700 /* The constant is stored in the instruction. */
2701 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2704 reloc
->addend
= fixp
->fx_addnumber
;
2711 /* Walk over reach relocation returned by the BFD backend. */
2712 for (i
= 0; i
< n_relocs
; i
++)
2716 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2717 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2718 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2724 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2729 /* For plabel relocations, the addend of the
2730 relocation should be either 0 (no static link) or 2
2731 (static link required).
2733 FIXME: We always assume no static link! */
2734 relocs
[i
]->addend
= 0;
2745 /* There is no symbol or addend associated with these fixups. */
2746 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2747 relocs
[i
]->addend
= 0;
2751 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2760 /* Process any machine dependent frag types. */
2763 md_convert_frag (abfd
, sec
, fragP
)
2765 register asection
*sec
;
2766 register fragS
*fragP
;
2768 unsigned int address
;
2770 if (fragP
->fr_type
== rs_machine_dependent
)
2772 switch ((int) fragP
->fr_subtype
)
2775 fragP
->fr_type
= rs_fill
;
2776 know (fragP
->fr_var
== 1);
2777 know (fragP
->fr_next
);
2778 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2779 if (address
% fragP
->fr_offset
)
2782 fragP
->fr_next
->fr_address
2787 fragP
->fr_offset
= 0;
2793 /* Round up a section size to the appropriate boundary. */
2796 md_section_align (segment
, size
)
2800 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2801 int align2
= (1 << align
) - 1;
2803 return (size
+ align2
) & ~align2
;
2806 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2808 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2810 addressT from_addr
, to_addr
;
2814 fprintf (stderr
, "pa_create_short_jmp\n");
2818 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2820 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2822 addressT from_addr
, to_addr
;
2826 fprintf (stderr
, "pa_create_long_jump\n");
2830 /* Return the approximate size of a frag before relaxation has occurred. */
2832 md_estimate_size_before_relax (fragP
, segment
)
2833 register fragS
*fragP
;
2840 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2846 /* Parse machine dependent options. There are none on the PA. */
2848 md_parse_option (argP
, cntP
, vecP
)
2856 /* We have no need to default values of symbols. */
2859 md_undefined_symbol (name
)
2865 /* Parse an operand that is machine-specific.
2866 We just return without modifying the expression as we have nothing
2870 md_operand (expressionP
)
2871 expressionS
*expressionP
;
2875 /* Apply a fixup to an instruction. */
2878 md_apply_fix (fixP
, valp
)
2882 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2883 struct hppa_fix_struct
*hppa_fixP
= fixP
->tc_fix_data
;
2884 long new_val
, result
;
2885 unsigned int w1
, w2
, w
;
2888 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2889 never be "applied" (they are just markers). */
2891 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2892 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2896 /* There should have been an HPPA specific fixup associated
2897 with the GAS fixup. */
2900 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2901 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2903 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2906 /* Remember this value for emit_reloc. FIXME, is this braindamage
2907 documented anywhere!?! */
2908 fixP
->fx_addnumber
= val
;
2910 /* Check if this is an undefined symbol. No relocation can
2911 possibly be performed in this case.
2913 Also avoid doing anything for pc-relative fixups in which the
2914 fixup is in a different space than the symbol it references. */
2915 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2917 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
)
2919 && S_GET_SEGMENT (fixP
->fx_addsy
) != hppa_fixP
->segment
)
2921 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2924 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
2925 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
2926 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
2927 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
2928 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
2929 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
2930 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
)
2931 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
2937 /* Handle all opcodes with the 'j' operand type. */
2939 CHECK_FIELD (new_val
, 8191, -8192, 0);
2941 /* Mask off 14 bits to be changed. */
2942 bfd_put_32 (stdoutput
,
2943 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2945 low_sign_unext (new_val
, 14, &result
);
2948 /* Handle all opcodes with the 'k' operand type. */
2950 CHECK_FIELD (new_val
, 2097152, 0, 0);
2952 /* Mask off 21 bits to be changed. */
2953 bfd_put_32 (stdoutput
,
2954 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2956 dis_assemble_21 (new_val
, &result
);
2959 /* Handle all the opcodes with the 'i' operand type. */
2961 CHECK_FIELD (new_val
, 1023, -1023, 0);
2963 /* Mask off 11 bits to be changed. */
2964 bfd_put_32 (stdoutput
,
2965 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2967 low_sign_unext (new_val
, 11, &result
);
2970 /* Handle all the opcodes with the 'w' operand type. */
2972 CHECK_FIELD (new_val
, 8191, -8192, 0)
2974 /* Mask off 11 bits to be changed. */
2975 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2976 bfd_put_32 (stdoutput
,
2977 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2980 dis_assemble_12 (result
, &w1
, &w
);
2981 result
= ((w1
<< 2) | w
);
2984 /* Handle some of the opcodes with the 'W' operand type. */
2987 #define stub_needed(CALLER, CALLEE) \
2988 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2989 /* It is necessary to force PC-relative calls/jumps to have a
2990 relocation entry if they're going to need either a argument
2991 relocation or long call stub. FIXME. Can't we need the same
2992 for absolute calls? */
2994 && (stub_needed (((obj_symbol_type
*)
2995 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2996 hppa_fixP
->fx_arg_reloc
)))
3000 CHECK_FIELD (new_val
, 262143, -262144, 0);
3002 /* Mask off 17 bits to be changed. */
3003 bfd_put_32 (stdoutput
,
3004 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3006 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3007 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3008 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3013 /* These are ELF specific relocations. ELF unfortunately
3014 handles unwinds in a completely different manner. */
3015 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3016 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3017 result
= fixP
->fx_addnumber
;
3022 fixP
->fx_addnumber
= fixP
->fx_offset
;
3023 /* If we have a real relocation, then we want zero to
3024 be stored in the object file. If no relocation is going
3025 to be emitted, then we need to store new_val into the
3028 bfd_put_32 (stdoutput
, 0, buf
);
3030 bfd_put_32 (stdoutput
, new_val
, buf
);
3039 as_bad ("Unknown relocation encountered in md_apply_fix.");
3043 /* Insert the relocation. */
3044 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3049 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3050 (unsigned int) fixP
, fixP
->fx_r_type
);
3055 /* Exactly what point is a PC-relative offset relative TO?
3056 On the PA, they're relative to the address of the offset. */
3059 md_pcrel_from (fixP
)
3062 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3065 /* Return nonzero if the input line pointer is at the end of
3069 is_end_of_statement ()
3071 return ((*input_line_pointer
== '\n')
3072 || (*input_line_pointer
== ';')
3073 || (*input_line_pointer
== '!'));
3076 /* Read a number from S. The number might come in one of many forms,
3077 the most common will be a hex or decimal constant, but it could be
3078 a pre-defined register (Yuk!), or an absolute symbol.
3080 Return a number or -1 for failure.
3082 When parsing PA-89 FP register numbers RESULT will be
3083 the address of a structure to return information about
3084 L/R half of FP registers, store results there as appropriate.
3086 pa_parse_number can not handle negative constants and will fail
3087 horribly if it is passed such a constant. */
3090 pa_parse_number (s
, result
)
3092 struct pa_89_fp_reg_struct
*result
;
3101 /* Skip whitespace before the number. */
3102 while (*p
== ' ' || *p
== '\t')
3105 /* Store info in RESULT if requested by caller. */
3108 result
->number_part
= -1;
3109 result
->l_r_select
= -1;
3115 /* Looks like a number. */
3118 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3120 /* The number is specified in hex. */
3122 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3123 || ((*p
>= 'A') && (*p
<= 'F')))
3126 num
= num
* 16 + *p
- '0';
3127 else if (*p
>= 'a' && *p
<= 'f')
3128 num
= num
* 16 + *p
- 'a' + 10;
3130 num
= num
* 16 + *p
- 'A' + 10;
3136 /* The number is specified in decimal. */
3137 while (isdigit (*p
))
3139 num
= num
* 10 + *p
- '0';
3144 /* Store info in RESULT if requested by the caller. */
3147 result
->number_part
= num
;
3149 if (IS_R_SELECT (p
))
3151 result
->l_r_select
= 1;
3154 else if (IS_L_SELECT (p
))
3156 result
->l_r_select
= 0;
3160 result
->l_r_select
= 0;
3165 /* The number might be a predefined register. */
3170 /* Tege hack: Special case for general registers as the general
3171 code makes a binary search with case translation, and is VERY
3176 if (*p
== 'e' && *(p
+ 1) == 't'
3177 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3180 num
= *p
- '0' + 28;
3188 else if (!isdigit (*p
))
3191 as_bad ("Undefined register: '%s'.", name
);
3197 num
= num
* 10 + *p
++ - '0';
3198 while (isdigit (*p
));
3203 /* Do a normal register search. */
3204 while (is_part_of_name (c
))
3210 status
= reg_name_search (name
);
3216 as_bad ("Undefined register: '%s'.", name
);
3222 /* Store info in RESULT if requested by caller. */
3225 result
->number_part
= num
;
3226 if (IS_R_SELECT (p
- 1))
3227 result
->l_r_select
= 1;
3228 else if (IS_L_SELECT (p
- 1))
3229 result
->l_r_select
= 0;
3231 result
->l_r_select
= 0;
3236 /* And finally, it could be a symbol in the absolute section which
3237 is effectively a constant. */
3241 while (is_part_of_name (c
))
3247 if ((sym
= symbol_find (name
)) != NULL
)
3249 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3250 num
= S_GET_VALUE (sym
);
3254 as_bad ("Non-absolute symbol: '%s'.", name
);
3260 /* There is where we'd come for an undefined symbol
3261 or for an empty string. For an empty string we
3262 will return zero. That's a concession made for
3263 compatability with the braindamaged HP assemblers. */
3269 as_bad ("Undefined absolute constant: '%s'.", name
);
3275 /* Store info in RESULT if requested by caller. */
3278 result
->number_part
= num
;
3279 if (IS_R_SELECT (p
- 1))
3280 result
->l_r_select
= 1;
3281 else if (IS_L_SELECT (p
- 1))
3282 result
->l_r_select
= 0;
3284 result
->l_r_select
= 0;
3292 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3294 /* Given NAME, find the register number associated with that name, return
3295 the integer value associated with the given name or -1 on failure. */
3298 reg_name_search (name
)
3301 int middle
, low
, high
;
3305 high
= REG_NAME_CNT
- 1;
3309 middle
= (low
+ high
) / 2;
3310 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3316 return pre_defined_registers
[middle
].value
;
3318 while (low
<= high
);
3324 /* Return nonzero if the given INSN and L/R information will require
3325 a new PA-89 opcode. */
3328 need_89_opcode (insn
, result
)
3330 struct pa_89_fp_reg_struct
*result
;
3332 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3338 /* Parse a condition for a fcmp instruction. Return the numerical
3339 code associated with the condition. */
3342 pa_parse_fp_cmp_cond (s
)
3349 for (i
= 0; i
< 32; i
++)
3351 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3352 strlen (fp_cond_map
[i
].string
)) == 0)
3354 cond
= fp_cond_map
[i
].cond
;
3355 *s
+= strlen (fp_cond_map
[i
].string
);
3356 while (**s
== ' ' || **s
== '\t')
3362 as_bad ("Invalid FP Compare Condition: %c", **s
);
3366 /* Parse an FP operand format completer returning the completer
3369 static fp_operand_format
3370 pa_parse_fp_format (s
)
3379 if (strncasecmp (*s
, "sgl", 3) == 0)
3384 else if (strncasecmp (*s
, "dbl", 3) == 0)
3389 else if (strncasecmp (*s
, "quad", 4) == 0)
3396 format
= ILLEGAL_FMT
;
3397 as_bad ("Invalid FP Operand Format: %3s", *s
);
3404 /* Convert from a selector string into a selector type. */
3407 pa_chk_field_selector (str
)
3410 int middle
, low
, high
;
3414 /* Read past any whitespace. */
3415 /* FIXME: should we read past newlines and formfeeds??? */
3416 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3419 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3420 name
[0] = tolower ((*str
)[0]),
3422 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3423 name
[0] = tolower ((*str
)[0]),
3424 name
[1] = tolower ((*str
)[1]),
3430 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3434 middle
= (low
+ high
) / 2;
3435 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3442 *str
+= strlen (name
) + 1;
3443 return selector_table
[middle
].field_selector
;
3446 while (low
<= high
);
3451 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3454 get_expression (str
)
3460 save_in
= input_line_pointer
;
3461 input_line_pointer
= str
;
3462 seg
= expression (&the_insn
.exp
);
3463 if (!(seg
== absolute_section
3464 || seg
== undefined_section
3465 || SEG_NORMAL (seg
)))
3467 as_warn ("Bad segment in expression.");
3468 expr_end
= input_line_pointer
;
3469 input_line_pointer
= save_in
;
3472 expr_end
= input_line_pointer
;
3473 input_line_pointer
= save_in
;
3477 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3479 pa_get_absolute_expression (insn
, strp
)
3485 insn
->field_selector
= pa_chk_field_selector (strp
);
3486 save_in
= input_line_pointer
;
3487 input_line_pointer
= *strp
;
3488 expression (&insn
->exp
);
3489 if (insn
->exp
.X_op
!= O_constant
)
3491 as_bad ("Bad segment (should be absolute).");
3492 expr_end
= input_line_pointer
;
3493 input_line_pointer
= save_in
;
3496 expr_end
= input_line_pointer
;
3497 input_line_pointer
= save_in
;
3498 return evaluate_absolute (insn
);
3501 /* Evaluate an absolute expression EXP which may be modified by
3502 the selector FIELD_SELECTOR. Return the value of the expression. */
3504 evaluate_absolute (insn
)
3509 int field_selector
= insn
->field_selector
;
3512 value
= exp
.X_add_number
;
3514 switch (field_selector
)
3520 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3522 if (value
& 0x00000400)
3524 value
= (value
& 0xfffff800) >> 11;
3527 /* Sign extend from bit 21. */
3529 if (value
& 0x00000400)
3530 value
|= 0xfffff800;
3535 /* Arithmetic shift right 11 bits. */
3537 value
= (value
& 0xfffff800) >> 11;
3540 /* Set bits 0-20 to zero. */
3542 value
= value
& 0x7ff;
3545 /* Add 0x800 and arithmetic shift right 11 bits. */
3548 value
= (value
& 0xfffff800) >> 11;
3551 /* Set bitgs 0-21 to one. */
3553 value
|= 0xfffff800;
3556 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3558 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3562 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3567 BAD_CASE (field_selector
);
3573 /* Given an argument location specification return the associated
3574 argument location number. */
3577 pa_build_arg_reloc (type_name
)
3581 if (strncasecmp (type_name
, "no", 2) == 0)
3583 if (strncasecmp (type_name
, "gr", 2) == 0)
3585 else if (strncasecmp (type_name
, "fr", 2) == 0)
3587 else if (strncasecmp (type_name
, "fu", 2) == 0)
3590 as_bad ("Invalid argument location: %s\n", type_name
);
3595 /* Encode and return an argument relocation specification for
3596 the given register in the location specified by arg_reloc. */
3599 pa_align_arg_reloc (reg
, arg_reloc
)
3601 unsigned int arg_reloc
;
3603 unsigned int new_reloc
;
3605 new_reloc
= arg_reloc
;
3621 as_bad ("Invalid argument description: %d", reg
);
3627 /* Parse a PA nullification completer (,n). Return nonzero if the
3628 completer was found; return zero if no completer was found. */
3640 if (strncasecmp (*s
, "n", 1) == 0)
3644 as_bad ("Invalid Nullification: (%c)", **s
);
3653 /* Parse a non-negated compare/subtract completer returning the
3654 number (for encoding in instrutions) of the given completer.
3656 ISBRANCH specifies whether or not this is parsing a condition
3657 completer for a branch (vs a nullification completer for a
3658 computational instruction. */
3661 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3666 char *name
= *s
+ 1;
3674 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3678 if (strcmp (name
, "=") == 0)
3682 else if (strcmp (name
, "<") == 0)
3686 else if (strcmp (name
, "<=") == 0)
3690 else if (strcmp (name
, "<<") == 0)
3694 else if (strcmp (name
, "<<=") == 0)
3698 else if (strcasecmp (name
, "sv") == 0)
3702 else if (strcasecmp (name
, "od") == 0)
3706 /* If we have something like addb,n then there is no condition
3708 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3719 /* Reset pointers if this was really a ,n for a branch instruction. */
3720 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3726 /* Parse a negated compare/subtract completer returning the
3727 number (for encoding in instrutions) of the given completer.
3729 ISBRANCH specifies whether or not this is parsing a condition
3730 completer for a branch (vs a nullification completer for a
3731 computational instruction. */
3734 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3739 char *name
= *s
+ 1;
3747 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3751 if (strcasecmp (name
, "tr") == 0)
3755 else if (strcmp (name
, "<>") == 0)
3759 else if (strcmp (name
, ">=") == 0)
3763 else if (strcmp (name
, ">") == 0)
3767 else if (strcmp (name
, ">>=") == 0)
3771 else if (strcmp (name
, ">>") == 0)
3775 else if (strcasecmp (name
, "nsv") == 0)
3779 else if (strcasecmp (name
, "ev") == 0)
3783 /* If we have something like addb,n then there is no condition
3785 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3796 /* Reset pointers if this was really a ,n for a branch instruction. */
3797 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3803 /* Parse a non-negated addition completer returning the number
3804 (for encoding in instrutions) of the given completer.
3806 ISBRANCH specifies whether or not this is parsing a condition
3807 completer for a branch (vs a nullification completer for a
3808 computational instruction. */
3811 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3816 char *name
= *s
+ 1;
3824 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3828 if (strcmp (name
, "=") == 0)
3832 else if (strcmp (name
, "<") == 0)
3836 else if (strcmp (name
, "<=") == 0)
3840 else if (strcasecmp (name
, "nuv") == 0)
3844 else if (strcasecmp (name
, "znv") == 0)
3848 else if (strcasecmp (name
, "sv") == 0)
3852 else if (strcasecmp (name
, "od") == 0)
3856 /* If we have something like addb,n then there is no condition
3858 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3869 /* Reset pointers if this was really a ,n for a branch instruction. */
3870 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3876 /* Parse a negated addition completer returning the number
3877 (for encoding in instrutions) of the given completer.
3879 ISBRANCH specifies whether or not this is parsing a condition
3880 completer for a branch (vs a nullification completer for a
3881 computational instruction. */
3884 pa_parse_neg_add_cmpltr (s
, isbranch
)
3889 char *name
= *s
+ 1;
3897 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3901 if (strcasecmp (name
, "tr") == 0)
3905 else if (strcmp (name
, "<>") == 0)
3909 else if (strcmp (name
, ">=") == 0)
3913 else if (strcmp (name
, ">") == 0)
3917 else if (strcasecmp (name
, "uv") == 0)
3921 else if (strcasecmp (name
, "vnz") == 0)
3925 else if (strcasecmp (name
, "nsv") == 0)
3929 else if (strcasecmp (name
, "ev") == 0)
3933 /* If we have something like addb,n then there is no condition
3935 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3946 /* Reset pointers if this was really a ,n for a branch instruction. */
3947 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3953 /* Handle a .BLOCK type pseudo-op. */
3961 unsigned int temp_size
;
3964 temp_size
= get_absolute_expression ();
3966 /* Always fill with zeros, that's what the HP assembler does. */
3969 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3970 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3971 bzero (p
, temp_size
);
3973 /* Convert 2 bytes at a time. */
3975 for (i
= 0; i
< temp_size
; i
+= 2)
3977 md_number_to_chars (p
+ i
,
3979 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3982 pa_undefine_label ();
3983 demand_empty_rest_of_line ();
3986 /* Handle a .CALL pseudo-op. This involves storing away information
3987 about where arguments are to be found so the linker can detect
3988 (and correct) argument location mismatches between caller and callee. */
3994 pa_call_args (&last_call_desc
);
3995 demand_empty_rest_of_line ();
3998 /* Do the dirty work of building a call descriptor which describes
3999 where the caller placed arguments to a function call. */
4002 pa_call_args (call_desc
)
4003 struct call_desc
*call_desc
;
4006 unsigned int temp
, arg_reloc
;
4008 while (!is_end_of_statement ())
4010 name
= input_line_pointer
;
4011 c
= get_symbol_end ();
4012 /* Process a source argument. */
4013 if ((strncasecmp (name
, "argw", 4) == 0))
4015 temp
= atoi (name
+ 4);
4016 p
= input_line_pointer
;
4018 input_line_pointer
++;
4019 name
= input_line_pointer
;
4020 c
= get_symbol_end ();
4021 arg_reloc
= pa_build_arg_reloc (name
);
4022 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4024 /* Process a return value. */
4025 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4027 p
= input_line_pointer
;
4029 input_line_pointer
++;
4030 name
= input_line_pointer
;
4031 c
= get_symbol_end ();
4032 arg_reloc
= pa_build_arg_reloc (name
);
4033 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4037 as_bad ("Invalid .CALL argument: %s", name
);
4039 p
= input_line_pointer
;
4041 if (!is_end_of_statement ())
4042 input_line_pointer
++;
4046 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4049 is_same_frag (frag1
, frag2
)
4056 else if (frag2
== NULL
)
4058 else if (frag1
== frag2
)
4060 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4061 return (is_same_frag (frag1
, frag2
->fr_next
));
4067 /* Build an entry in the UNWIND subspace from the given function
4068 attributes in CALL_INFO. This is not needed for SOM as using
4069 R_ENTRY and R_EXIT relocations allow the linker to handle building
4070 of the unwind spaces. */
4073 pa_build_unwind_subspace (call_info
)
4074 struct call_info
*call_info
;
4077 asection
*seg
, *save_seg
;
4078 subsegT subseg
, save_subseg
;
4082 /* Get into the right seg/subseg. This may involve creating
4083 the seg the first time through. Make sure to have the
4084 old seg/subseg so that we can reset things when we are done. */
4085 subseg
= SUBSEG_UNWIND
;
4086 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4087 if (seg
== ASEC_NULL
)
4089 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4090 bfd_set_section_flags (stdoutput
, seg
,
4091 SEC_READONLY
| SEC_HAS_CONTENTS
4092 | SEC_LOAD
| SEC_RELOC
);
4096 save_subseg
= now_subseg
;
4097 subseg_set (seg
, subseg
);
4100 /* Get some space to hold relocation information for the unwind
4104 /* Relocation info. for start offset of the function. */
4105 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4106 call_info
->start_symbol
, (offsetT
) 0,
4107 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4112 /* Relocation info. for end offset of the function. */
4113 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4114 call_info
->end_symbol
, (offsetT
) 0,
4115 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4119 unwind
= (char *) &call_info
->ci_unwind
;
4120 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4124 FRAG_APPEND_1_CHAR (c
);
4128 /* Return back to the original segment/subsegment. */
4129 subseg_set (save_seg
, save_subseg
);
4133 /* Process a .CALLINFO pseudo-op. This information is used later
4134 to build unwind descriptors and maybe one day to support
4135 .ENTER and .LEAVE. */
4138 pa_callinfo (unused
)
4144 /* .CALLINFO must appear within a procedure definition. */
4145 if (!within_procedure
)
4146 as_bad (".callinfo is not within a procedure definition");
4148 /* Mark the fact that we found the .CALLINFO for the
4149 current procedure. */
4150 callinfo_found
= TRUE
;
4152 /* Iterate over the .CALLINFO arguments. */
4153 while (!is_end_of_statement ())
4155 name
= input_line_pointer
;
4156 c
= get_symbol_end ();
4157 /* Frame size specification. */
4158 if ((strncasecmp (name
, "frame", 5) == 0))
4160 p
= input_line_pointer
;
4162 input_line_pointer
++;
4163 temp
= get_absolute_expression ();
4164 if ((temp
& 0x3) != 0)
4166 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4170 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4171 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4174 /* Entry register (GR, GR and SR) specifications. */
4175 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4177 p
= input_line_pointer
;
4179 input_line_pointer
++;
4180 temp
= get_absolute_expression ();
4181 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4182 even though %r19 is caller saved. I think this is a bug in
4183 the HP assembler, and we are not going to emulate it. */
4184 if (temp
< 3 || temp
> 18)
4185 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4186 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4188 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4190 p
= input_line_pointer
;
4192 input_line_pointer
++;
4193 temp
= get_absolute_expression ();
4194 /* Similarly the HP assembler takes 31 as the high bound even
4195 though %fr21 is the last callee saved floating point register. */
4196 if (temp
< 12 || temp
> 21)
4197 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4198 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4200 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4202 p
= input_line_pointer
;
4204 input_line_pointer
++;
4205 temp
= get_absolute_expression ();
4207 as_bad ("Value for ENTRY_SR must be 3\n");
4209 /* Note whether or not this function performs any calls. */
4210 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4211 (strncasecmp (name
, "caller", 6) == 0))
4213 p
= input_line_pointer
;
4216 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4218 p
= input_line_pointer
;
4221 /* Should RP be saved into the stack. */
4222 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4224 p
= input_line_pointer
;
4226 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4228 /* Likewise for SP. */
4229 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4231 p
= input_line_pointer
;
4233 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4235 /* Is this an unwindable procedure. If so mark it so
4236 in the unwind descriptor. */
4237 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4239 p
= input_line_pointer
;
4241 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4243 /* Is this an interrupt routine. If so mark it in the
4244 unwind descriptor. */
4245 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4247 p
= input_line_pointer
;
4249 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4253 as_bad ("Invalid .CALLINFO argument: %s", name
);
4255 if (!is_end_of_statement ())
4256 input_line_pointer
++;
4259 demand_empty_rest_of_line ();
4262 /* Switch into the code subspace. */
4268 sd_chain_struct
*sdchain
;
4270 /* First time through it might be necessary to create the
4272 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4274 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4275 pa_def_spaces
[0].spnum
,
4276 pa_def_spaces
[0].loadable
,
4277 pa_def_spaces
[0].defined
,
4278 pa_def_spaces
[0].private,
4279 pa_def_spaces
[0].sort
,
4280 pa_def_spaces
[0].segment
, 0);
4283 SPACE_DEFINED (sdchain
) = 1;
4284 subseg_set (text_section
, SUBSEG_CODE
);
4285 demand_empty_rest_of_line ();
4288 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4289 the .comm pseudo-op has the following symtax:
4291 <label> .comm <length>
4293 where <label> is optional and is a symbol whose address will be the start of
4294 a block of memory <length> bytes long. <length> must be an absolute
4295 expression. <length> bytes will be allocated in the current space
4304 label_symbol_struct
*label_symbol
= pa_get_label ();
4307 symbol
= label_symbol
->lss_label
;
4312 size
= get_absolute_expression ();
4316 /* It is incorrect to check S_IS_DEFINED at this point as
4317 the symbol will *always* be defined. FIXME. How to
4318 correctly determine when this label really as been
4320 if (S_GET_VALUE (symbol
))
4322 if (S_GET_VALUE (symbol
) != size
)
4324 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4325 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4331 S_SET_VALUE (symbol
, size
);
4332 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4333 S_SET_EXTERNAL (symbol
);
4336 demand_empty_rest_of_line ();
4339 /* Process a .END pseudo-op. */
4345 demand_empty_rest_of_line ();
4348 /* Process a .ENTER pseudo-op. This is not supported. */
4356 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4362 if (!within_procedure
)
4363 as_bad ("Misplaced .entry. Ignored.");
4366 if (!callinfo_found
)
4367 as_bad ("Missing .callinfo.");
4369 demand_empty_rest_of_line ();
4370 within_entry_exit
= TRUE
;
4372 /* Go back to the last symbol and turn on the BSF_FUNCTION flag.
4373 It will not be on if no .EXPORT pseudo-op exists (static function). */
4374 last_call_info
->start_symbol
->bsym
->flags
|= BSF_FUNCTION
;
4377 /* SOM defers building of unwind descriptors until the link phase.
4378 The assembler is responsible for creating an R_ENTRY relocation
4379 to mark the beginning of a region and hold the unwind bits, and
4380 for creating an R_EXIT relocation to mark the end of the region.
4382 FIXME. ELF should be using the same conventions! The problem
4383 is an unwind requires too much relocation space. Hmmm. Maybe
4384 if we split the unwind bits up between the relocations which
4385 denote the entry and exit points. */
4387 char *where
= frag_more (0);
4389 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4390 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4391 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4392 (char *) &last_call_info
->ci_unwind
.descriptor
);
4397 /* Handle a .EQU pseudo-op. */
4403 label_symbol_struct
*label_symbol
= pa_get_label ();
4408 symbol
= label_symbol
->lss_label
;
4409 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4410 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4415 as_bad (".REG must use a label");
4417 as_bad (".EQU must use a label");
4420 pa_undefine_label ();
4421 demand_empty_rest_of_line ();
4424 /* Helper function. Does processing for the end of a function. This
4425 usually involves creating some relocations or building special
4426 symbols to mark the end of the function. */
4433 where
= frag_more (0);
4436 /* Mark the end of the function, stuff away the location of the frag
4437 for the end of the function, and finally call pa_build_unwind_subspace
4438 to add an entry in the unwind table. */
4439 hppa_elf_mark_end_of_function ();
4440 pa_build_unwind_subspace (last_call_info
);
4442 /* SOM defers building of unwind descriptors until the link phase.
4443 The assembler is responsible for creating an R_ENTRY relocation
4444 to mark the beginning of a region and hold the unwind bits, and
4445 for creating an R_EXIT relocation to mark the end of the region.
4447 FIXME. ELF should be using the same conventions! The problem
4448 is an unwind requires too much relocation space. Hmmm. Maybe
4449 if we split the unwind bits up between the relocations which
4450 denote the entry and exit points. */
4451 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4452 last_call_info
->start_symbol
, (offsetT
) 0,
4453 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4457 /* Process a .EXIT pseudo-op. */
4463 if (!within_procedure
)
4464 as_bad (".EXIT must appear within a procedure");
4467 if (!callinfo_found
)
4468 as_bad ("Missing .callinfo");
4471 if (!within_entry_exit
)
4472 as_bad ("No .ENTRY for this .EXIT");
4475 within_entry_exit
= FALSE
;
4480 demand_empty_rest_of_line ();
4483 /* Process a .EXPORT directive. This makes functions external
4484 and provides information such as argument relocation entries
4494 name
= input_line_pointer
;
4495 c
= get_symbol_end ();
4496 /* Make sure the given symbol exists. */
4497 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4499 as_bad ("Cannot define export symbol: %s\n", name
);
4500 p
= input_line_pointer
;
4502 input_line_pointer
++;
4506 /* OK. Set the external bits and process argument relocations. */
4507 S_SET_EXTERNAL (symbol
);
4508 p
= input_line_pointer
;
4510 if (!is_end_of_statement ())
4512 input_line_pointer
++;
4513 pa_type_args (symbol
, 1);
4515 pa_build_symextn_section ();
4520 demand_empty_rest_of_line ();
4523 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4526 pa_type_args (symbolP
, is_export
)
4531 unsigned int temp
, arg_reloc
;
4532 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4533 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4535 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4538 input_line_pointer
+= 8;
4539 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4540 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4541 type
= SYMBOL_TYPE_ABSOLUTE
;
4543 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4545 input_line_pointer
+= 4;
4546 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4547 instead one should be IMPORTing/EXPORTing ENTRY types.
4549 Complain if one tries to EXPORT a CODE type since that's never
4550 done. Both GCC and HP C still try to IMPORT CODE types, so
4551 silently fix them to be ENTRY types. */
4552 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4555 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4557 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4558 type
= SYMBOL_TYPE_ENTRY
;
4562 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4563 type
= SYMBOL_TYPE_CODE
;
4566 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4568 input_line_pointer
+= 4;
4569 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4570 type
= SYMBOL_TYPE_DATA
;
4572 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4574 input_line_pointer
+= 5;
4575 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4576 type
= SYMBOL_TYPE_ENTRY
;
4578 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4580 input_line_pointer
+= 9;
4581 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4582 type
= SYMBOL_TYPE_MILLICODE
;
4584 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4586 input_line_pointer
+= 6;
4587 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4588 type
= SYMBOL_TYPE_PLABEL
;
4590 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4592 input_line_pointer
+= 8;
4593 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4594 type
= SYMBOL_TYPE_PRI_PROG
;
4596 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4598 input_line_pointer
+= 8;
4599 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4600 type
= SYMBOL_TYPE_SEC_PROG
;
4603 /* SOM requires much more information about symbol types
4604 than BFD understands. This is how we get this information
4605 to the SOM BFD backend. */
4606 #ifdef obj_set_symbol_type
4607 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4610 /* Now that the type of the exported symbol has been handled,
4611 handle any argument relocation information. */
4612 while (!is_end_of_statement ())
4614 if (*input_line_pointer
== ',')
4615 input_line_pointer
++;
4616 name
= input_line_pointer
;
4617 c
= get_symbol_end ();
4618 /* Argument sources. */
4619 if ((strncasecmp (name
, "argw", 4) == 0))
4621 p
= input_line_pointer
;
4623 input_line_pointer
++;
4624 temp
= atoi (name
+ 4);
4625 name
= input_line_pointer
;
4626 c
= get_symbol_end ();
4627 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4628 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4629 *input_line_pointer
= c
;
4631 /* The return value. */
4632 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4634 p
= input_line_pointer
;
4636 input_line_pointer
++;
4637 name
= input_line_pointer
;
4638 c
= get_symbol_end ();
4639 arg_reloc
= pa_build_arg_reloc (name
);
4640 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4641 *input_line_pointer
= c
;
4643 /* Privelege level. */
4644 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4646 p
= input_line_pointer
;
4648 input_line_pointer
++;
4649 temp
= atoi (input_line_pointer
);
4650 c
= get_symbol_end ();
4651 *input_line_pointer
= c
;
4655 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4656 p
= input_line_pointer
;
4659 if (!is_end_of_statement ())
4660 input_line_pointer
++;
4664 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4665 assembly file must either be defined in the assembly file, or
4666 explicitly IMPORTED from another. */
4675 name
= input_line_pointer
;
4676 c
= get_symbol_end ();
4678 symbol
= symbol_find_or_make (name
);
4679 p
= input_line_pointer
;
4682 if (!is_end_of_statement ())
4684 input_line_pointer
++;
4685 pa_type_args (symbol
, 0);
4689 /* Sigh. To be compatable with the HP assembler and to help
4690 poorly written assembly code, we assign a type based on
4691 the the current segment. Note only BSF_FUNCTION really
4692 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4693 if (now_seg
== text_section
)
4694 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4696 /* If the section is undefined, then the symbol is undefined
4697 Since this is an import, leave the section undefined. */
4698 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4701 demand_empty_rest_of_line ();
4704 /* Handle a .LABEL pseudo-op. */
4712 name
= input_line_pointer
;
4713 c
= get_symbol_end ();
4715 if (strlen (name
) > 0)
4718 p
= input_line_pointer
;
4723 as_warn ("Missing label name on .LABEL");
4726 if (!is_end_of_statement ())
4728 as_warn ("extra .LABEL arguments ignored.");
4729 ignore_rest_of_line ();
4731 demand_empty_rest_of_line ();
4734 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4743 /* Handle a .ORIGIN pseudo-op. */
4750 pa_undefine_label ();
4753 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4754 is for static functions. FIXME. Should share more code with .EXPORT. */
4763 name
= input_line_pointer
;
4764 c
= get_symbol_end ();
4766 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4768 as_bad ("Cannot define static symbol: %s\n", name
);
4769 p
= input_line_pointer
;
4771 input_line_pointer
++;
4775 S_CLEAR_EXTERNAL (symbol
);
4776 p
= input_line_pointer
;
4778 if (!is_end_of_statement ())
4780 input_line_pointer
++;
4781 pa_type_args (symbol
, 0);
4785 demand_empty_rest_of_line ();
4788 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4789 of a procedure from a syntatical point of view. */
4795 struct call_info
*call_info
;
4797 if (within_procedure
)
4798 as_fatal ("Nested procedures");
4800 /* Reset global variables for new procedure. */
4801 callinfo_found
= FALSE
;
4802 within_procedure
= TRUE
;
4804 /* Create another call_info structure. */
4805 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4808 as_fatal ("Cannot allocate unwind descriptor\n");
4810 bzero (call_info
, sizeof (struct call_info
));
4812 call_info
->ci_next
= NULL
;
4814 if (call_info_root
== NULL
)
4816 call_info_root
= call_info
;
4817 last_call_info
= call_info
;
4821 last_call_info
->ci_next
= call_info
;
4822 last_call_info
= call_info
;
4825 /* set up defaults on call_info structure */
4827 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4828 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4829 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4831 /* If we got a .PROC pseudo-op, we know that the function is defined
4832 locally. Make sure it gets into the symbol table. */
4834 label_symbol_struct
*label_symbol
= pa_get_label ();
4838 if (label_symbol
->lss_label
)
4840 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4841 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4844 as_bad ("Missing function name for .PROC (corrupted label chain)");
4847 last_call_info
->start_symbol
= NULL
;
4850 demand_empty_rest_of_line ();
4853 /* Process the syntatical end of a procedure. Make sure all the
4854 appropriate pseudo-ops were found within the procedure. */
4861 if (!within_procedure
)
4862 as_bad ("misplaced .procend");
4864 if (!callinfo_found
)
4865 as_bad ("Missing .callinfo for this procedure");
4867 if (within_entry_exit
)
4868 as_bad ("Missing .EXIT for a .ENTRY");
4871 /* ELF needs to mark the end of each function so that it can compute
4872 the size of the function (apparently its needed in the symbol table. */
4873 hppa_elf_mark_end_of_function ();
4876 within_procedure
= FALSE
;
4877 demand_empty_rest_of_line ();
4878 pa_undefine_label ();
4881 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4882 then create a new space entry to hold the information specified
4883 by the parameters to the .SPACE directive. */
4885 static sd_chain_struct
*
4886 pa_parse_space_stmt (space_name
, create_flag
)
4890 char *name
, *ptemp
, c
;
4891 char loadable
, defined
, private, sort
;
4893 asection
*seg
= NULL
;
4894 sd_chain_struct
*space
;
4896 /* load default values */
4902 if (strcmp (space_name
, "$TEXT$") == 0)
4904 seg
= pa_def_spaces
[0].segment
;
4905 sort
= pa_def_spaces
[0].sort
;
4907 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4909 seg
= pa_def_spaces
[1].segment
;
4910 sort
= pa_def_spaces
[1].sort
;
4913 if (!is_end_of_statement ())
4915 print_errors
= FALSE
;
4916 ptemp
= input_line_pointer
+ 1;
4917 /* First see if the space was specified as a number rather than
4918 as a name. According to the PA assembly manual the rest of
4919 the line should be ignored. */
4920 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
4921 input_line_pointer
= ptemp
;
4924 while (!is_end_of_statement ())
4926 input_line_pointer
++;
4927 name
= input_line_pointer
;
4928 c
= get_symbol_end ();
4929 if ((strncasecmp (name
, "spnum", 5) == 0))
4931 *input_line_pointer
= c
;
4932 input_line_pointer
++;
4933 spnum
= get_absolute_expression ();
4935 else if ((strncasecmp (name
, "sort", 4) == 0))
4937 *input_line_pointer
= c
;
4938 input_line_pointer
++;
4939 sort
= get_absolute_expression ();
4941 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4943 *input_line_pointer
= c
;
4946 else if ((strncasecmp (name
, "notdefined", 10) == 0))
4948 *input_line_pointer
= c
;
4951 else if ((strncasecmp (name
, "private", 7) == 0))
4953 *input_line_pointer
= c
;
4958 as_bad ("Invalid .SPACE argument");
4959 *input_line_pointer
= c
;
4960 if (!is_end_of_statement ())
4961 input_line_pointer
++;
4965 print_errors
= TRUE
;
4968 if (create_flag
&& seg
== NULL
)
4969 seg
= subseg_new (space_name
, 0);
4971 /* If create_flag is nonzero, then create the new space with
4972 the attributes computed above. Else set the values in
4973 an already existing space -- this can only happen for
4974 the first occurence of a built-in space. */
4976 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
4977 private, sort
, seg
, 1);
4980 space
= is_defined_space (space_name
);
4981 SPACE_SPNUM (space
) = spnum
;
4982 SPACE_DEFINED (space
) = defined
& 1;
4983 SPACE_USER_DEFINED (space
) = 1;
4984 space
->sd_seg
= seg
;
4987 #ifdef obj_set_section_attributes
4988 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
4994 /* Handle a .SPACE pseudo-op; this switches the current space to the
4995 given space, creating the new space if necessary. */
5001 char *name
, c
, *space_name
, *save_s
;
5003 sd_chain_struct
*sd_chain
;
5005 if (within_procedure
)
5007 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5008 ignore_rest_of_line ();
5012 /* Check for some of the predefined spaces. FIXME: most of the code
5013 below is repeated several times, can we extract the common parts
5014 and place them into a subroutine or something similar? */
5015 /* FIXME Is this (and the next IF stmt) really right?
5016 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5017 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5019 input_line_pointer
+= 6;
5020 sd_chain
= is_defined_space ("$TEXT$");
5021 if (sd_chain
== NULL
)
5022 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5023 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5024 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5026 current_space
= sd_chain
;
5027 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5029 = pa_subsegment_to_subspace (text_section
,
5030 sd_chain
->sd_last_subseg
);
5031 demand_empty_rest_of_line ();
5034 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5036 input_line_pointer
+= 9;
5037 sd_chain
= is_defined_space ("$PRIVATE$");
5038 if (sd_chain
== NULL
)
5039 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5040 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5041 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5043 current_space
= sd_chain
;
5044 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5046 = pa_subsegment_to_subspace (data_section
,
5047 sd_chain
->sd_last_subseg
);
5048 demand_empty_rest_of_line ();
5051 if (!strncasecmp (input_line_pointer
,
5052 GDB_DEBUG_SPACE_NAME
,
5053 strlen (GDB_DEBUG_SPACE_NAME
)))
5055 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5056 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5057 if (sd_chain
== NULL
)
5058 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5059 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5060 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5062 current_space
= sd_chain
;
5065 asection
*gdb_section
5066 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5068 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5070 = pa_subsegment_to_subspace (gdb_section
,
5071 sd_chain
->sd_last_subseg
);
5073 demand_empty_rest_of_line ();
5077 /* It could be a space specified by number. */
5079 save_s
= input_line_pointer
;
5080 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5082 if (sd_chain
= pa_find_space_by_number (temp
))
5084 current_space
= sd_chain
;
5086 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5088 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5089 sd_chain
->sd_last_subseg
);
5090 demand_empty_rest_of_line ();
5095 /* Not a number, attempt to create a new space. */
5097 input_line_pointer
= save_s
;
5098 name
= input_line_pointer
;
5099 c
= get_symbol_end ();
5100 space_name
= xmalloc (strlen (name
) + 1);
5101 strcpy (space_name
, name
);
5102 *input_line_pointer
= c
;
5104 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5105 current_space
= sd_chain
;
5107 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5108 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5109 sd_chain
->sd_last_subseg
);
5110 demand_empty_rest_of_line ();
5114 /* Switch to a new space. (I think). FIXME. */
5123 sd_chain_struct
*space
;
5125 name
= input_line_pointer
;
5126 c
= get_symbol_end ();
5127 space
= is_defined_space (name
);
5131 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5134 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5136 *input_line_pointer
= c
;
5137 demand_empty_rest_of_line ();
5140 /* If VALUE is an exact power of two between zero and 2^31, then
5141 return log2 (VALUE). Else return -1. */
5149 while ((1 << shift
) != value
&& shift
< 32)
5158 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5159 given subspace, creating the new subspace if necessary.
5161 FIXME. Should mirror pa_space more closely, in particular how
5162 they're broken up into subroutines. */
5165 pa_subspace (unused
)
5168 char *name
, *ss_name
, *alias
, c
;
5169 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5170 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5171 sd_chain_struct
*space
;
5172 ssd_chain_struct
*ssd
;
5175 if (within_procedure
)
5177 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5178 ignore_rest_of_line ();
5182 name
= input_line_pointer
;
5183 c
= get_symbol_end ();
5184 ss_name
= xmalloc (strlen (name
) + 1);
5185 strcpy (ss_name
, name
);
5186 *input_line_pointer
= c
;
5188 /* Load default values. */
5201 space
= current_space
;
5202 ssd
= is_defined_subspace (ss_name
);
5203 /* Allow user to override the builtin attributes of subspaces. But
5204 only allow the attributes to be changed once! */
5205 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5207 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5208 if (!is_end_of_statement ())
5209 as_warn ("Parameters of an existing subspace can\'t be modified");
5210 demand_empty_rest_of_line ();
5215 /* A new subspace. Load default values if it matches one of
5216 the builtin subspaces. */
5218 while (pa_def_subspaces
[i
].name
)
5220 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5222 loadable
= pa_def_subspaces
[i
].loadable
;
5223 common
= pa_def_subspaces
[i
].common
;
5224 dup_common
= pa_def_subspaces
[i
].dup_common
;
5225 code_only
= pa_def_subspaces
[i
].code_only
;
5226 zero
= pa_def_subspaces
[i
].zero
;
5227 space_index
= pa_def_subspaces
[i
].space_index
;
5228 alignment
= pa_def_subspaces
[i
].alignment
;
5229 quadrant
= pa_def_subspaces
[i
].quadrant
;
5230 access
= pa_def_subspaces
[i
].access
;
5231 sort
= pa_def_subspaces
[i
].sort
;
5232 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5233 alias
= pa_def_subspaces
[i
].alias
;
5240 /* We should be working with a new subspace now. Fill in
5241 any information as specified by the user. */
5242 if (!is_end_of_statement ())
5244 input_line_pointer
++;
5245 while (!is_end_of_statement ())
5247 name
= input_line_pointer
;
5248 c
= get_symbol_end ();
5249 if ((strncasecmp (name
, "quad", 4) == 0))
5251 *input_line_pointer
= c
;
5252 input_line_pointer
++;
5253 quadrant
= get_absolute_expression ();
5255 else if ((strncasecmp (name
, "align", 5) == 0))
5257 *input_line_pointer
= c
;
5258 input_line_pointer
++;
5259 alignment
= get_absolute_expression ();
5260 if (log2 (alignment
) == -1)
5262 as_bad ("Alignment must be a power of 2");
5266 else if ((strncasecmp (name
, "access", 6) == 0))
5268 *input_line_pointer
= c
;
5269 input_line_pointer
++;
5270 access
= get_absolute_expression ();
5272 else if ((strncasecmp (name
, "sort", 4) == 0))
5274 *input_line_pointer
= c
;
5275 input_line_pointer
++;
5276 sort
= get_absolute_expression ();
5278 else if ((strncasecmp (name
, "code_only", 9) == 0))
5280 *input_line_pointer
= c
;
5283 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5285 *input_line_pointer
= c
;
5288 else if ((strncasecmp (name
, "common", 6) == 0))
5290 *input_line_pointer
= c
;
5293 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5295 *input_line_pointer
= c
;
5298 else if ((strncasecmp (name
, "zero", 4) == 0))
5300 *input_line_pointer
= c
;
5303 else if ((strncasecmp (name
, "first", 5) == 0))
5304 as_bad ("FIRST not supported as a .SUBSPACE argument");
5306 as_bad ("Invalid .SUBSPACE argument");
5307 if (!is_end_of_statement ())
5308 input_line_pointer
++;
5312 /* Compute a reasonable set of BFD flags based on the information
5313 in the .subspace directive. */
5314 applicable
= bfd_applicable_section_flags (stdoutput
);
5317 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5320 if (common
|| dup_common
)
5321 flags
|= SEC_IS_COMMON
;
5323 /* This is a zero-filled subspace (eg BSS). */
5327 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5328 applicable
&= flags
;
5330 /* If this is an existing subspace, then we want to use the
5331 segment already associated with the subspace.
5333 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5334 lots of sections. It might be a problem in the PA ELF
5335 code, I do not know yet. For now avoid creating anything
5336 but the "standard" sections for ELF. */
5338 section
= ssd
->ssd_seg
;
5340 section
= subseg_new (alias
, 0);
5341 else if (!alias
&& USE_ALIASES
)
5343 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5344 demand_empty_rest_of_line ();
5348 section
= subseg_new (ss_name
, 0);
5350 /* Now set the flags. */
5351 bfd_set_section_flags (stdoutput
, section
, applicable
);
5353 /* Record any alignment request for this section. */
5354 record_alignment (section
, log2 (alignment
));
5356 /* Set the starting offset for this section. */
5357 bfd_set_section_vma (stdoutput
, section
,
5358 pa_subspace_start (space
, quadrant
));
5360 /* Now that all the flags are set, update an existing subspace,
5361 or create a new one. */
5364 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5365 code_only
, common
, dup_common
,
5366 sort
, zero
, access
, space_index
,
5367 alignment
, quadrant
,
5370 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5372 dup_common
, zero
, sort
,
5373 access
, space_index
,
5374 alignment
, quadrant
, section
);
5376 demand_empty_rest_of_line ();
5377 current_subspace
->ssd_seg
= section
;
5378 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5380 SUBSPACE_DEFINED (current_subspace
) = 1;
5384 /* Create default space and subspace dictionaries. */
5391 space_dict_root
= NULL
;
5392 space_dict_last
= NULL
;
5395 while (pa_def_spaces
[i
].name
)
5399 /* Pick the right name to use for the new section. */
5400 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5401 name
= pa_def_spaces
[i
].alias
;
5403 name
= pa_def_spaces
[i
].name
;
5405 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5406 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5407 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5408 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5409 pa_def_spaces
[i
].segment
, 0);
5414 while (pa_def_subspaces
[i
].name
)
5417 int applicable
, subsegment
;
5418 asection
*segment
= NULL
;
5419 sd_chain_struct
*space
;
5421 /* Pick the right name for the new section and pick the right
5422 subsegment number. */
5423 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5425 name
= pa_def_subspaces
[i
].alias
;
5426 subsegment
= pa_def_subspaces
[i
].subsegment
;
5430 name
= pa_def_subspaces
[i
].name
;
5434 /* Create the new section. */
5435 segment
= subseg_new (name
, subsegment
);
5438 /* For SOM we want to replace the standard .text, .data, and .bss
5439 sections with our own. */
5440 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5442 text_section
= segment
;
5443 applicable
= bfd_applicable_section_flags (stdoutput
);
5444 bfd_set_section_flags (stdoutput
, text_section
,
5445 applicable
& (SEC_ALLOC
| SEC_LOAD
5446 | SEC_RELOC
| SEC_CODE
5448 | SEC_HAS_CONTENTS
));
5450 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5452 data_section
= segment
;
5453 applicable
= bfd_applicable_section_flags (stdoutput
);
5454 bfd_set_section_flags (stdoutput
, data_section
,
5455 applicable
& (SEC_ALLOC
| SEC_LOAD
5457 | SEC_HAS_CONTENTS
));
5461 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5463 bss_section
= segment
;
5464 applicable
= bfd_applicable_section_flags (stdoutput
);
5465 bfd_set_section_flags (stdoutput
, bss_section
,
5466 applicable
& SEC_ALLOC
);
5469 /* Find the space associated with this subspace. */
5470 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5471 def_space_index
].segment
);
5474 as_fatal ("Internal error: Unable to find containing space for %s.",
5475 pa_def_subspaces
[i
].name
);
5478 create_new_subspace (space
, name
,
5479 pa_def_subspaces
[i
].loadable
,
5480 pa_def_subspaces
[i
].code_only
,
5481 pa_def_subspaces
[i
].common
,
5482 pa_def_subspaces
[i
].dup_common
,
5483 pa_def_subspaces
[i
].zero
,
5484 pa_def_subspaces
[i
].sort
,
5485 pa_def_subspaces
[i
].access
,
5486 pa_def_subspaces
[i
].space_index
,
5487 pa_def_subspaces
[i
].alignment
,
5488 pa_def_subspaces
[i
].quadrant
,
5496 /* Create a new space NAME, with the appropriate flags as defined
5497 by the given parameters. */
5499 static sd_chain_struct
*
5500 create_new_space (name
, spnum
, loadable
, defined
, private,
5501 sort
, seg
, user_defined
)
5511 sd_chain_struct
*chain_entry
;
5513 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5515 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5518 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5519 strcpy (SPACE_NAME (chain_entry
), name
);
5520 SPACE_DEFINED (chain_entry
) = defined
;
5521 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5522 SPACE_SPNUM (chain_entry
) = spnum
;
5524 chain_entry
->sd_seg
= seg
;
5525 chain_entry
->sd_last_subseg
= -1;
5526 chain_entry
->sd_next
= NULL
;
5528 /* Find spot for the new space based on its sort key. */
5529 if (!space_dict_last
)
5530 space_dict_last
= chain_entry
;
5532 if (space_dict_root
== NULL
)
5533 space_dict_root
= chain_entry
;
5536 sd_chain_struct
*chain_pointer
;
5537 sd_chain_struct
*prev_chain_pointer
;
5539 chain_pointer
= space_dict_root
;
5540 prev_chain_pointer
= NULL
;
5542 while (chain_pointer
)
5544 prev_chain_pointer
= chain_pointer
;
5545 chain_pointer
= chain_pointer
->sd_next
;
5548 /* At this point we've found the correct place to add the new
5549 entry. So add it and update the linked lists as appropriate. */
5550 if (prev_chain_pointer
)
5552 chain_entry
->sd_next
= chain_pointer
;
5553 prev_chain_pointer
->sd_next
= chain_entry
;
5557 space_dict_root
= chain_entry
;
5558 chain_entry
->sd_next
= chain_pointer
;
5561 if (chain_entry
->sd_next
== NULL
)
5562 space_dict_last
= chain_entry
;
5565 /* This is here to catch predefined spaces which do not get
5566 modified by the user's input. Another call is found at
5567 the bottom of pa_parse_space_stmt to handle cases where
5568 the user modifies a predefined space. */
5569 #ifdef obj_set_section_attributes
5570 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5576 /* Create a new subspace NAME, with the appropriate flags as defined
5577 by the given parameters.
5579 Add the new subspace to the subspace dictionary chain in numerical
5580 order as defined by the SORT entries. */
5582 static ssd_chain_struct
*
5583 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5584 dup_common
, is_zero
, sort
, access
, space_index
,
5585 alignment
, quadrant
, seg
)
5586 sd_chain_struct
*space
;
5588 char loadable
, code_only
, common
, dup_common
, is_zero
;
5596 ssd_chain_struct
*chain_entry
;
5598 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5600 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5602 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5603 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5605 /* Initialize subspace_defined. When we hit a .subspace directive
5606 we'll set it to 1 which "locks-in" the subspace attributes. */
5607 SUBSPACE_DEFINED (chain_entry
) = 0;
5609 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5610 chain_entry
->ssd_seg
= seg
;
5611 chain_entry
->ssd_next
= NULL
;
5613 /* Find spot for the new subspace based on its sort key. */
5614 if (space
->sd_subspaces
== NULL
)
5615 space
->sd_subspaces
= chain_entry
;
5618 ssd_chain_struct
*chain_pointer
;
5619 ssd_chain_struct
*prev_chain_pointer
;
5621 chain_pointer
= space
->sd_subspaces
;
5622 prev_chain_pointer
= NULL
;
5624 while (chain_pointer
)
5626 prev_chain_pointer
= chain_pointer
;
5627 chain_pointer
= chain_pointer
->ssd_next
;
5630 /* Now we have somewhere to put the new entry. Insert it and update
5632 if (prev_chain_pointer
)
5634 chain_entry
->ssd_next
= chain_pointer
;
5635 prev_chain_pointer
->ssd_next
= chain_entry
;
5639 space
->sd_subspaces
= chain_entry
;
5640 chain_entry
->ssd_next
= chain_pointer
;
5644 #ifdef obj_set_subsection_attributes
5645 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5652 /* Update the information for the given subspace based upon the
5653 various arguments. Return the modified subspace chain entry. */
5655 static ssd_chain_struct
*
5656 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5657 zero
, access
, space_index
, alignment
, quadrant
, section
)
5658 sd_chain_struct
*space
;
5672 ssd_chain_struct
*chain_entry
;
5674 chain_entry
= is_defined_subspace (name
);
5676 #ifdef obj_set_subsection_attributes
5677 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5684 /* Return the space chain entry for the space with the name NAME or
5685 NULL if no such space exists. */
5687 static sd_chain_struct
*
5688 is_defined_space (name
)
5691 sd_chain_struct
*chain_pointer
;
5693 for (chain_pointer
= space_dict_root
;
5695 chain_pointer
= chain_pointer
->sd_next
)
5697 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5698 return chain_pointer
;
5701 /* No mapping from segment to space was found. Return NULL. */
5705 /* Find and return the space associated with the given seg. If no mapping
5706 from the given seg to a space is found, then return NULL.
5708 Unlike subspaces, the number of spaces is not expected to grow much,
5709 so a linear exhaustive search is OK here. */
5711 static sd_chain_struct
*
5712 pa_segment_to_space (seg
)
5715 sd_chain_struct
*space_chain
;
5717 /* Walk through each space looking for the correct mapping. */
5718 for (space_chain
= space_dict_root
;
5720 space_chain
= space_chain
->sd_next
)
5722 if (space_chain
->sd_seg
== seg
)
5726 /* Mapping was not found. Return NULL. */
5730 /* Return the space chain entry for the subspace with the name NAME or
5731 NULL if no such subspace exists.
5733 Uses a linear search through all the spaces and subspaces, this may
5734 not be appropriate if we ever being placing each function in its
5737 static ssd_chain_struct
*
5738 is_defined_subspace (name
)
5741 sd_chain_struct
*space_chain
;
5742 ssd_chain_struct
*subspace_chain
;
5744 /* Walk through each space. */
5745 for (space_chain
= space_dict_root
;
5747 space_chain
= space_chain
->sd_next
)
5749 /* Walk through each subspace looking for a name which matches. */
5750 for (subspace_chain
= space_chain
->sd_subspaces
;
5752 subspace_chain
= subspace_chain
->ssd_next
)
5753 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5754 return subspace_chain
;
5757 /* Subspace wasn't found. Return NULL. */
5761 /* Find and return the subspace associated with the given seg. If no
5762 mapping from the given seg to a subspace is found, then return NULL.
5764 If we ever put each procedure/function within its own subspace
5765 (to make life easier on the compiler and linker), then this will have
5766 to become more efficient. */
5768 static ssd_chain_struct
*
5769 pa_subsegment_to_subspace (seg
, subseg
)
5773 sd_chain_struct
*space_chain
;
5774 ssd_chain_struct
*subspace_chain
;
5776 /* Walk through each space. */
5777 for (space_chain
= space_dict_root
;
5779 space_chain
= space_chain
->sd_next
)
5781 if (space_chain
->sd_seg
== seg
)
5783 /* Walk through each subspace within each space looking for
5784 the correct mapping. */
5785 for (subspace_chain
= space_chain
->sd_subspaces
;
5787 subspace_chain
= subspace_chain
->ssd_next
)
5788 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5789 return subspace_chain
;
5793 /* No mapping from subsegment to subspace found. Return NULL. */
5797 /* Given a number, try and find a space with the name number.
5799 Return a pointer to a space dictionary chain entry for the space
5800 that was found or NULL on failure. */
5802 static sd_chain_struct
*
5803 pa_find_space_by_number (number
)
5806 sd_chain_struct
*space_chain
;
5808 for (space_chain
= space_dict_root
;
5810 space_chain
= space_chain
->sd_next
)
5812 if (SPACE_SPNUM (space_chain
) == number
)
5816 /* No appropriate space found. Return NULL. */
5820 /* Return the starting address for the given subspace. If the starting
5821 address is unknown then return zero. */
5824 pa_subspace_start (space
, quadrant
)
5825 sd_chain_struct
*space
;
5828 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5829 is not correct for the PA OSF1 port. */
5830 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5832 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5838 /* FIXME. Needs documentation. */
5840 pa_next_subseg (space
)
5841 sd_chain_struct
*space
;
5844 space
->sd_last_subseg
++;
5845 return space
->sd_last_subseg
;
5848 /* Helper function for pa_stringer. Used to find the end of
5855 unsigned int c
= *s
& CHAR_MASK
;
5867 /* Handle a .STRING type pseudo-op. */
5870 pa_stringer (append_zero
)
5873 char *s
, num_buf
[4];
5877 /* Preprocess the string to handle PA-specific escape sequences.
5878 For example, \xDD where DD is a hexidecimal number should be
5879 changed to \OOO where OOO is an octal number. */
5881 /* Skip the opening quote. */
5882 s
= input_line_pointer
+ 1;
5884 while (is_a_char (c
= pa_stringer_aux (s
++)))
5891 /* Handle \x<num>. */
5894 unsigned int number
;
5899 /* Get pas the 'x'. */
5901 for (num_digit
= 0, number
= 0, dg
= *s
;
5903 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5904 || (dg
>= 'A' && dg
<= 'F'));
5908 number
= number
* 16 + dg
- '0';
5909 else if (dg
>= 'a' && dg
<= 'f')
5910 number
= number
* 16 + dg
- 'a' + 10;
5912 number
= number
* 16 + dg
- 'A' + 10;
5922 sprintf (num_buf
, "%02o", number
);
5925 sprintf (num_buf
, "%03o", number
);
5928 for (i
= 0; i
<= num_digit
; i
++)
5929 s_start
[i
] = num_buf
[i
];
5933 /* This might be a "\"", skip over the escaped char. */
5940 stringer (append_zero
);
5941 pa_undefine_label ();
5944 /* Handle a .VERSION pseudo-op. */
5951 pa_undefine_label ();
5954 /* Handle a .COPYRIGHT pseudo-op. */
5957 pa_copyright (unused
)
5961 pa_undefine_label ();
5964 /* Just like a normal cons, but when finished we have to undefine
5965 the latest space label. */
5972 pa_undefine_label ();
5975 /* Switch to the data space. As usual delete our label. */
5982 pa_undefine_label ();
5985 /* Like float_cons, but we need to undefine our label. */
5988 pa_float_cons (float_type
)
5991 float_cons (float_type
);
5992 pa_undefine_label ();
5995 /* Like s_fill, but delete our label when finished. */
6002 pa_undefine_label ();
6005 /* Like lcomm, but delete our label when finished. */
6008 pa_lcomm (needs_align
)
6011 s_lcomm (needs_align
);
6012 pa_undefine_label ();
6015 /* Like lsym, but delete our label when finished. */
6022 pa_undefine_label ();
6025 /* Switch to the text space. Like s_text, but delete our
6026 label when finished. */
6032 pa_undefine_label ();
6035 /* On the PA relocations which involve function symbols must not be
6036 adjusted. This so that the linker can know when/how to create argument
6037 relocation stubs for indirect calls and calls to static functions.
6039 FIXME. Also reject R_HPPA relocations which are 32 bits
6040 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6041 needs to generate relocations to push the addend and symbol value
6042 onto the stack, add them, then pop the value off the stack and
6043 use it in a relocation -- yuk. */
6046 hppa_fix_adjustable (fixp
)
6049 struct hppa_fix_struct
*hppa_fix
;
6051 hppa_fix
= fixp
->tc_fix_data
;
6053 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6056 if (fixp
->fx_addsy
== 0
6057 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6063 /* Return nonzero if the fixup in FIXP will require a relocation,
6064 even it if appears that the fixup could be completely handled
6068 hppa_force_relocation (fixp
)
6071 struct hppa_fix_struct
*hppa_fixp
= fixp
->tc_fix_data
;
6074 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6078 #define stub_needed(CALLER, CALLEE) \
6079 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6081 /* It is necessary to force PC-relative calls/jumps to have a relocation
6082 entry if they're going to need either a argument relocation or long
6083 call stub. FIXME. Can't we need the same for absolute calls? */
6084 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6085 && (stub_needed (((obj_symbol_type
*)
6086 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6087 hppa_fixp
->fx_arg_reloc
)))
6092 /* No need (yet) to force another relocations to be emitted. */
6096 /* Now for some ELF specific code. FIXME. */
6098 static symext_chainS
*symext_rootP
;
6099 static symext_chainS
*symext_lastP
;
6101 /* Mark the end of a function so that it's possible to compute
6102 the size of the function in hppa_elf_final_processing. */
6105 hppa_elf_mark_end_of_function ()
6107 /* ELF does not have EXIT relocations. All we do is create a
6108 temporary symbol marking the end of the function. */
6109 char *name
= (char *)
6110 xmalloc (strlen ("L$\001end_") +
6111 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6117 strcpy (name
, "L$\001end_");
6118 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6120 /* If we have a .exit followed by a .procend, then the
6121 symbol will have already been defined. */
6122 symbolP
= symbol_find (name
);
6125 /* The symbol has already been defined! This can
6126 happen if we have a .exit followed by a .procend.
6128 This is *not* an error. All we want to do is free
6129 the memory we just allocated for the name and continue. */
6134 /* symbol value should be the offset of the
6135 last instruction of the function */
6136 symbolP
= symbol_new (name
, now_seg
,
6137 (valueT
) (obstack_next_free (&frags
)
6138 - frag_now
->fr_literal
- 4),
6142 symbolP
->bsym
->flags
= BSF_LOCAL
;
6143 symbol_table_insert (symbolP
);
6147 last_call_info
->end_symbol
= symbolP
;
6149 as_bad ("Symbol '%s' could not be created.", name
);
6153 as_bad ("No memory for symbol name.");
6157 /* Do any symbol processing requested by the target-cpu or target-format. */
6160 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6162 elf_symbol_type
*symbolP
;
6165 symext_chainS
*symextP
;
6166 unsigned int arg_reloc
;
6168 /* Only functions can have argument relocations. */
6169 if (!(symbolP
->symbol
.flags
& BSF_FUNCTION
))
6172 arg_reloc
= symbolP
->tc_data
.hppa_arg_reloc
;
6174 /* If there are no argument relocation bits, then no relocation is
6175 necessary. Do not add this to the symextn section. */
6179 symextP
= (symext_chainS
*) bfd_alloc (abfd
, sizeof (symext_chainS
) * 2);
6181 symextP
[0].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
, sym_idx
);
6182 symextP
[0].next
= &symextP
[1];
6184 symextP
[1].entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC
, arg_reloc
);
6185 symextP
[1].next
= NULL
;
6187 if (symext_rootP
== NULL
)
6189 symext_rootP
= &symextP
[0];
6190 symext_lastP
= &symextP
[1];
6194 symext_lastP
->next
= &symextP
[0];
6195 symext_lastP
= &symextP
[1];
6199 /* Make sections needed by the target cpu and/or target format. */
6201 hppa_tc_make_sections (abfd
)
6204 symext_chainS
*symextP
;
6205 segT save_seg
= now_seg
;
6206 subsegT save_subseg
= now_subseg
;
6208 /* Build the symbol extension section. */
6209 hppa_tc_make_symextn_section ();
6211 /* Force some calculation to occur. */
6212 bfd_set_section_contents (stdoutput
, stdoutput
->sections
, "", 0, 0);
6214 hppa_elf_stub_finish (abfd
);
6216 /* If no symbols for the symbol extension section, then stop now. */
6217 if (symext_rootP
== NULL
)
6220 /* Switch to the symbol extension section. */
6221 subseg_new (SYMEXTN_SECTION_NAME
, 0);
6223 frag_wane (frag_now
);
6226 for (symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
)
6229 int *symtab_map
= elf_sym_extra (abfd
);
6232 /* First, patch the symbol extension record to reflect the true
6233 symbol table index. */
6235 if (ELF32_HPPA_SX_TYPE (symextP
->entry
) == HPPA_SXT_SYMNDX
)
6237 idx
= ELF32_HPPA_SX_VAL (symextP
->entry
) - 1;
6238 symextP
->entry
= ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX
,
6242 ptr
= frag_more (sizeof (symextP
->entry
));
6243 md_number_to_chars (ptr
, symextP
->entry
, sizeof (symextP
->entry
));
6246 frag_now
->fr_fix
= obstack_next_free (&frags
) - frag_now
->fr_literal
;
6247 frag_wane (frag_now
);
6249 /* Switch back to the original segment. */
6250 subseg_set (save_seg
, save_subseg
);
6253 /* Make the symbol extension section. */
6256 hppa_tc_make_symextn_section ()
6260 symext_chainS
*symextP
;
6264 segT save_seg
= now_seg
;
6265 subsegT save_subseg
= now_subseg
;
6267 for (n
= 0, symextP
= symext_rootP
; symextP
; symextP
= symextP
->next
, ++n
)
6270 size
= sizeof (symext_entryS
) * n
;
6272 symextn_sec
= subseg_new (SYMEXTN_SECTION_NAME
, 0);
6274 bfd_set_section_flags (stdoutput
, symextn_sec
,
6275 SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_DATA
);
6276 bfd_set_section_size (stdoutput
, symextn_sec
, size
);
6278 /* Now, switch back to the original segment. */
6279 subseg_set (save_seg
, save_subseg
);
6283 /* Build the symbol extension section. */
6286 pa_build_symextn_section ()
6289 asection
*save_seg
= now_seg
;
6290 subsegT subseg
= (subsegT
) 0;
6291 subsegT save_subseg
= now_subseg
;
6293 seg
= subseg_new (".hppa_symextn", subseg
);
6294 bfd_set_section_flags (stdoutput
,
6296 SEC_HAS_CONTENTS
| SEC_READONLY
6297 | SEC_ALLOC
| SEC_LOAD
);
6299 subseg_set (save_seg
, save_subseg
);
6302 /* For ELF, this function serves one purpose: to setup the st_size
6303 field of STT_FUNC symbols. To do this, we need to scan the
6304 call_info structure list, determining st_size in by taking the
6305 difference in the address of the beginning/end marker symbols. */
6308 elf_hppa_final_processing ()
6310 struct call_info
*call_info_pointer
;
6312 for (call_info_pointer
= call_info_root
;
6314 call_info_pointer
= call_info_pointer
->ci_next
)
6316 elf_symbol_type
*esym
6317 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6318 esym
->internal_elf_sym
.st_size
=
6319 S_GET_VALUE (call_info_pointer
->end_symbol
)
6320 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;