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 ".PARISC.unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type
;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type
;
88 /* Various structures and types used internally in tc-hppa.c. */
90 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
94 unsigned int cannot_unwind
:1;
95 unsigned int millicode
:1;
96 unsigned int millicode_save_rest
:1;
97 unsigned int region_desc
:2;
98 unsigned int save_sr
:2;
99 unsigned int entry_fr
:4;
100 unsigned int entry_gr
:5;
101 unsigned int args_stored
:1;
102 unsigned int call_fr
:5;
103 unsigned int call_gr
:5;
104 unsigned int save_sp
:1;
105 unsigned int save_rp
:1;
106 unsigned int save_rp_in_frame
:1;
107 unsigned int extn_ptr_defined
:1;
108 unsigned int cleanup_defined
:1;
110 unsigned int hpe_interrupt_marker
:1;
111 unsigned int hpux_interrupt_marker
:1;
112 unsigned int reserved
:3;
113 unsigned int frame_size
:27;
118 /* Starting and ending offsets of the region described by
120 unsigned int start_offset
;
121 unsigned int end_offset
;
122 struct unwind_desc descriptor
;
125 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
126 control the entry and exit code they generate. It is also used in
127 creation of the correct stack unwind descriptors.
129 NOTE: GAS does not support .enter and .leave for the generation of
130 prologues and epilogues. FIXME.
132 The fields in structure roughly correspond to the arguments available on the
133 .callinfo pseudo-op. */
137 /* The unwind descriptor being built. */
138 struct unwind_table ci_unwind
;
140 /* Name of this function. */
141 symbolS
*start_symbol
;
143 /* (temporary) symbol used to mark the end of this function. */
146 /* Next entry in the chain. */
147 struct call_info
*ci_next
;
150 /* Operand formats for FP instructions. Note not all FP instructions
151 allow all four formats to be used (for example fmpysub only allows
155 SGL
, DBL
, ILLEGAL_FMT
, QUAD
159 /* This fully describes the symbol types which may be attached to
160 an EXPORT or IMPORT directive. Only SOM uses this formation
161 (ELF has no need for it). */
165 SYMBOL_TYPE_ABSOLUTE
,
169 SYMBOL_TYPE_MILLICODE
,
171 SYMBOL_TYPE_PRI_PROG
,
172 SYMBOL_TYPE_SEC_PROG
,
176 /* This structure contains information needed to assemble
177 individual instructions. */
180 /* Holds the opcode after parsing by pa_ip. */
181 unsigned long opcode
;
183 /* Holds an expression associated with the current instruction. */
186 /* Does this instruction use PC-relative addressing. */
189 /* Floating point formats for operand1 and operand2. */
190 fp_operand_format fpof1
;
191 fp_operand_format fpof2
;
193 /* Holds the field selector for this instruction
194 (for example L%, LR%, etc). */
197 /* Holds any argument relocation bits associated with this
198 instruction. (instruction should be some sort of call). */
201 /* The format specification for this instruction. */
204 /* The relocation (if any) associated with this instruction. */
208 /* PA-89 floating point registers are arranged like this:
211 +--------------+--------------+
212 | 0 or 16L | 16 or 16R |
213 +--------------+--------------+
214 | 1 or 17L | 17 or 17R |
215 +--------------+--------------+
223 +--------------+--------------+
224 | 14 or 30L | 30 or 30R |
225 +--------------+--------------+
226 | 15 or 31L | 31 or 31R |
227 +--------------+--------------+
230 The following is a version of pa_parse_number that
231 handles the L/R notation and returns the correct
232 value to put into the instruction register field.
233 The correct value to put into the instruction is
234 encoded in the structure 'pa_89_fp_reg_struct'. */
236 struct pa_89_fp_reg_struct
238 /* The register number. */
245 /* Additional information needed to build argument relocation stubs. */
248 /* The argument relocation specification. */
249 unsigned int arg_reloc
;
251 /* Number of arguments. */
252 unsigned int arg_count
;
255 /* This structure defines an entry in the subspace dictionary
258 struct subspace_dictionary_chain
260 /* Nonzero if this space has been defined by the user code. */
261 unsigned int ssd_defined
;
263 /* Name of this subspace. */
266 /* GAS segment and subsegment associated with this subspace. */
270 /* Next space in the subspace dictionary chain. */
271 struct subspace_dictionary_chain
*ssd_next
;
274 typedef struct subspace_dictionary_chain ssd_chain_struct
;
276 /* This structure defines an entry in the subspace dictionary
279 struct space_dictionary_chain
281 /* Nonzero if this space has been defined by the user code or
282 as a default space. */
283 unsigned int sd_defined
;
285 /* Nonzero if this spaces has been defined by the user code. */
286 unsigned int sd_user_defined
;
288 /* The space number (or index). */
289 unsigned int sd_spnum
;
291 /* The name of this subspace. */
294 /* GAS segment to which this subspace corresponds. */
297 /* Current subsegment number being used. */
300 /* The chain of subspaces contained within this space. */
301 ssd_chain_struct
*sd_subspaces
;
303 /* The next entry in the space dictionary chain. */
304 struct space_dictionary_chain
*sd_next
;
307 typedef struct space_dictionary_chain sd_chain_struct
;
309 /* Structure for previous label tracking. Needed so that alignments,
310 callinfo declarations, etc can be easily attached to a particular
312 typedef struct label_symbol_struct
314 struct symbol
*lss_label
;
315 sd_chain_struct
*lss_space
;
316 struct label_symbol_struct
*lss_next
;
320 /* This structure defines attributes of the default subspace
321 dictionary entries. */
323 struct default_subspace_dict
325 /* Name of the subspace. */
328 /* FIXME. Is this still needed? */
331 /* Nonzero if this subspace is loadable. */
334 /* Nonzero if this subspace contains only code. */
337 /* Nonzero if this is a common subspace. */
340 /* Nonzero if this is a common subspace which allows symbols
341 to be multiply defined. */
344 /* Nonzero if this subspace should be zero filled. */
347 /* Sort key for this subspace. */
350 /* Access control bits for this subspace. Can represent RWX access
351 as well as privilege level changes for gateways. */
354 /* Index of containing space. */
357 /* Alignment (in bytes) of this subspace. */
360 /* Quadrant within space where this subspace should be loaded. */
363 /* An index into the default spaces array. */
366 /* An alias for this section (or NULL if no alias exists). */
369 /* Subsegment associated with this subspace. */
373 /* This structure defines attributes of the default space
374 dictionary entries. */
376 struct default_space_dict
378 /* Name of the space. */
381 /* Space number. It is possible to identify spaces within
382 assembly code numerically! */
385 /* Nonzero if this space is loadable. */
388 /* Nonzero if this space is "defined". FIXME is still needed */
391 /* Nonzero if this space can not be shared. */
394 /* Sort key for this space. */
397 /* Segment associated with this space. */
400 /* An alias for this section (or NULL if no alias exists). */
404 /* Extra information needed to perform fixups (relocations) on the PA. */
405 struct hppa_fix_struct
407 /* The field selector. */
408 enum hppa_reloc_field_selector_type fx_r_field
;
413 /* Format of fixup. */
416 /* Argument relocation bits. */
419 /* The unwind descriptor associated with this fixup. */
422 /* The segment this fixup appears in. */
426 /* Structure to hold information about predefined registers. */
434 /* This structure defines the mapping from a FP condition string
435 to a condition number which can be recorded in an instruction. */
442 /* This structure defines a mapping from a field selector
443 string to a field selector type. */
444 struct selector_entry
450 /* Prototypes for functions local to tc-hppa.c. */
452 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
453 static void pa_cons
PARAMS ((int));
454 static void pa_data
PARAMS ((int));
455 static void pa_float_cons
PARAMS ((int));
456 static void pa_fill
PARAMS ((int));
457 static void pa_lcomm
PARAMS ((int));
458 static void pa_lsym
PARAMS ((int));
459 static void pa_stringer
PARAMS ((int));
460 static void pa_text
PARAMS ((int));
461 static void pa_version
PARAMS ((int));
462 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
463 static int get_expression
PARAMS ((char *));
464 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
465 static int evaluate_absolute
PARAMS ((struct pa_it
*));
466 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
467 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
468 static int pa_parse_nullif
PARAMS ((char **));
469 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
470 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
471 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
472 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
473 static void pa_block
PARAMS ((int));
474 static void pa_call
PARAMS ((int));
475 static void pa_call_args
PARAMS ((struct call_desc
*));
476 static void pa_callinfo
PARAMS ((int));
477 static void pa_code
PARAMS ((int));
478 static void pa_comm
PARAMS ((int));
479 static void pa_copyright
PARAMS ((int));
480 static void pa_end
PARAMS ((int));
481 static void pa_enter
PARAMS ((int));
482 static void pa_entry
PARAMS ((int));
483 static void pa_equ
PARAMS ((int));
484 static void pa_exit
PARAMS ((int));
485 static void pa_export
PARAMS ((int));
486 static void pa_type_args
PARAMS ((symbolS
*, int));
487 static void pa_import
PARAMS ((int));
488 static void pa_label
PARAMS ((int));
489 static void pa_leave
PARAMS ((int));
490 static void pa_origin
PARAMS ((int));
491 static void pa_proc
PARAMS ((int));
492 static void pa_procend
PARAMS ((int));
493 static void pa_space
PARAMS ((int));
494 static void pa_spnum
PARAMS ((int));
495 static void pa_subspace
PARAMS ((int));
496 static void pa_param
PARAMS ((int));
497 static void pa_undefine_label
PARAMS ((void));
498 static int need_89_opcode
PARAMS ((struct pa_it
*,
499 struct pa_89_fp_reg_struct
*));
500 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
501 static label_symbol_struct
*pa_get_label
PARAMS ((void));
502 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, int,
505 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
510 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
511 char *, int, int, int,
515 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
516 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
517 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
518 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
520 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
521 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
522 static void pa_ip
PARAMS ((char *));
523 static void fix_new_hppa
PARAMS ((fragS
*, int, int, symbolS
*,
524 long, expressionS
*, int,
525 bfd_reloc_code_real_type
,
526 enum hppa_reloc_field_selector_type
,
528 static int is_end_of_statement
PARAMS ((void));
529 static int reg_name_search
PARAMS ((char *));
530 static int pa_chk_field_selector
PARAMS ((char **));
531 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
532 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
533 static void process_exit
PARAMS ((void));
534 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
535 static int log2
PARAMS ((int));
536 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
537 static unsigned int pa_stringer_aux
PARAMS ((char *));
538 static void pa_spaces_begin
PARAMS ((void));
539 static void hppa_elf_mark_end_of_function
PARAMS ((void));
541 /* File and gloally scoped variable declarations. */
543 /* Root and final entry in the space chain. */
544 static sd_chain_struct
*space_dict_root
;
545 static sd_chain_struct
*space_dict_last
;
547 /* The current space and subspace. */
548 static sd_chain_struct
*current_space
;
549 static ssd_chain_struct
*current_subspace
;
551 /* Root of the call_info chain. */
552 static struct call_info
*call_info_root
;
554 /* The last call_info (for functions) structure
555 seen so it can be associated with fixups and
557 static struct call_info
*last_call_info
;
559 /* The last call description (for actual calls). */
560 static struct call_desc last_call_desc
;
562 /* Relaxation isn't supported for the PA yet. */
563 const relax_typeS md_relax_table
[] =
566 /* Jumps are always the same size -- one instruction. */
567 int md_short_jump_size
= 4;
568 int md_long_jump_size
= 4;
570 /* handle of the OPCODE hash table */
571 static struct hash_control
*op_hash
= NULL
;
573 /* This array holds the chars that always start a comment. If the
574 pre-processor is disabled, these aren't very useful. */
575 const char comment_chars
[] = ";";
577 /* Table of pseudo ops for the PA. FIXME -- how many of these
578 are now redundant with the overall GAS and the object file
580 const pseudo_typeS md_pseudo_table
[] =
582 /* align pseudo-ops on the PA specify the actual alignment requested,
583 not the log2 of the requested alignment. */
584 {"align", s_align_bytes
, 8},
585 {"ALIGN", s_align_bytes
, 8},
586 {"block", pa_block
, 1},
587 {"BLOCK", pa_block
, 1},
588 {"blockz", pa_block
, 0},
589 {"BLOCKZ", pa_block
, 0},
590 {"byte", pa_cons
, 1},
591 {"BYTE", pa_cons
, 1},
592 {"call", pa_call
, 0},
593 {"CALL", pa_call
, 0},
594 {"callinfo", pa_callinfo
, 0},
595 {"CALLINFO", pa_callinfo
, 0},
596 {"code", pa_code
, 0},
597 {"CODE", pa_code
, 0},
598 {"comm", pa_comm
, 0},
599 {"COMM", pa_comm
, 0},
600 {"copyright", pa_copyright
, 0},
601 {"COPYRIGHT", pa_copyright
, 0},
602 {"data", pa_data
, 0},
603 {"DATA", pa_data
, 0},
604 {"double", pa_float_cons
, 'd'},
605 {"DOUBLE", pa_float_cons
, 'd'},
608 {"enter", pa_enter
, 0},
609 {"ENTER", pa_enter
, 0},
610 {"entry", pa_entry
, 0},
611 {"ENTRY", pa_entry
, 0},
614 {"exit", pa_exit
, 0},
615 {"EXIT", pa_exit
, 0},
616 {"export", pa_export
, 0},
617 {"EXPORT", pa_export
, 0},
618 {"fill", pa_fill
, 0},
619 {"FILL", pa_fill
, 0},
620 {"float", pa_float_cons
, 'f'},
621 {"FLOAT", pa_float_cons
, 'f'},
622 {"half", pa_cons
, 2},
623 {"HALF", pa_cons
, 2},
624 {"import", pa_import
, 0},
625 {"IMPORT", pa_import
, 0},
628 {"label", pa_label
, 0},
629 {"LABEL", pa_label
, 0},
630 {"lcomm", pa_lcomm
, 0},
631 {"LCOMM", pa_lcomm
, 0},
632 {"leave", pa_leave
, 0},
633 {"LEAVE", pa_leave
, 0},
634 {"long", pa_cons
, 4},
635 {"LONG", pa_cons
, 4},
636 {"lsym", pa_lsym
, 0},
637 {"LSYM", pa_lsym
, 0},
638 {"octa", pa_cons
, 16},
639 {"OCTA", pa_cons
, 16},
640 {"org", pa_origin
, 0},
641 {"ORG", pa_origin
, 0},
642 {"origin", pa_origin
, 0},
643 {"ORIGIN", pa_origin
, 0},
644 {"param", pa_param
, 0},
645 {"PARAM", pa_param
, 0},
646 {"proc", pa_proc
, 0},
647 {"PROC", pa_proc
, 0},
648 {"procend", pa_procend
, 0},
649 {"PROCEND", pa_procend
, 0},
650 {"quad", pa_cons
, 8},
651 {"QUAD", pa_cons
, 8},
654 {"short", pa_cons
, 2},
655 {"SHORT", pa_cons
, 2},
656 {"single", pa_float_cons
, 'f'},
657 {"SINGLE", pa_float_cons
, 'f'},
658 {"space", pa_space
, 0},
659 {"SPACE", pa_space
, 0},
660 {"spnum", pa_spnum
, 0},
661 {"SPNUM", pa_spnum
, 0},
662 {"string", pa_stringer
, 0},
663 {"STRING", pa_stringer
, 0},
664 {"stringz", pa_stringer
, 1},
665 {"STRINGZ", pa_stringer
, 1},
666 {"subspa", pa_subspace
, 0},
667 {"SUBSPA", pa_subspace
, 0},
668 {"text", pa_text
, 0},
669 {"TEXT", pa_text
, 0},
670 {"version", pa_version
, 0},
671 {"VERSION", pa_version
, 0},
672 {"word", pa_cons
, 4},
673 {"WORD", pa_cons
, 4},
677 /* This array holds the chars that only start a comment at the beginning of
678 a line. If the line seems to have the form '# 123 filename'
679 .line and .file directives will appear in the pre-processed output.
681 Note that input_file.c hand checks for '#' at the beginning of the
682 first line of the input file. This is because the compiler outputs
683 #NO_APP at the beginning of its output.
685 Also note that '/*' will always start a comment. */
686 const char line_comment_chars
[] = "#";
688 /* This array holds the characters which act as line separators. */
689 const char line_separator_chars
[] = "!";
691 /* Chars that can be used to separate mant from exp in floating point nums. */
692 const char EXP_CHARS
[] = "eE";
694 /* Chars that mean this number is a floating point constant.
695 As in 0f12.456 or 0d1.2345e12.
697 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
698 changed in read.c. Ideally it shouldn't hae to know abou it at
699 all, but nothing is ideal around here. */
700 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
702 static struct pa_it the_insn
;
704 /* Points to the end of an expression just parsed by get_expressoin
705 and friends. FIXME. This shouldn't be handled with a file-global
707 static char *expr_end
;
709 /* Nonzero if a .callinfo appeared within the current procedure. */
710 static int callinfo_found
;
712 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
713 static int within_entry_exit
;
715 /* Nonzero if the assembler is currently within a procedure definition. */
716 static int within_procedure
;
718 /* Handle on strucutre which keep track of the last symbol
719 seen in each subspace. */
720 static label_symbol_struct
*label_symbols_rootp
= NULL
;
722 /* Holds the last field selector. */
723 static int hppa_field_selector
;
725 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
726 static symbolS
*dummy_symbol
;
728 /* Nonzero if errors are to be printed. */
729 static int print_errors
= 1;
731 /* List of registers that are pre-defined:
733 Each general register has one predefined name of the form
734 %r<REGNUM> which has the value <REGNUM>.
736 Space and control registers are handled in a similar manner,
737 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
739 Likewise for the floating point registers, but of the form
740 %fr<REGNUM>. Floating point registers have additional predefined
741 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
742 again have the value <REGNUM>.
744 Many registers also have synonyms:
746 %r26 - %r23 have %arg0 - %arg3 as synonyms
747 %r28 - %r29 have %ret0 - %ret1 as synonyms
748 %r30 has %sp as a synonym
749 %r27 has %dp as a synonym
750 %r2 has %rp as a synonym
752 Almost every control register has a synonym; they are not listed
755 The table is sorted. Suitable for searching by a binary search. */
757 static const struct pd_reg pre_defined_registers
[] =
957 /* This table is sorted by order of the length of the string. This is
958 so we check for <> before we check for <. If we had a <> and checked
959 for < first, we would get a false match. */
960 static const struct fp_cond_map fp_cond_map
[] =
996 static const struct selector_entry selector_table
[] =
1015 /* default space and subspace dictionaries */
1017 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1018 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1020 /* pre-defined subsegments (subspaces) for the HPPA. */
1021 #define SUBSEG_CODE 0
1022 #define SUBSEG_DATA 0
1023 #define SUBSEG_LIT 1
1024 #define SUBSEG_BSS 2
1025 #define SUBSEG_UNWIND 3
1026 #define SUBSEG_GDB_STRINGS 0
1027 #define SUBSEG_GDB_SYMBOLS 1
1029 static struct default_subspace_dict pa_def_subspaces
[] =
1031 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
1032 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
1033 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
1034 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
1036 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND
},
1038 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1041 static struct default_space_dict pa_def_spaces
[] =
1043 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1044 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1045 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1048 /* Misc local definitions used by the assembler. */
1050 /* Return nonzero if the string pointed to by S potentially represents
1051 a right or left half of a FP register */
1052 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1053 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1055 /* These macros are used to maintain spaces/subspaces. */
1056 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1057 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1058 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1059 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1061 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1062 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1064 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1065 main loop after insertion. */
1067 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1069 ((OPCODE) |= (FIELD) << (START)); \
1073 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1074 IGNORE is used to suppress the error message. */
1076 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1078 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1081 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1087 #define is_DP_relative(exp) \
1088 ((exp).X_op == O_subtract \
1089 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1091 #define is_PC_relative(exp) \
1092 ((exp).X_op == O_subtract \
1093 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1095 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1096 always be able to reduce the expression to a constant, so we don't
1097 need real complex handling yet. */
1098 #define is_complex(exp) \
1099 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1101 /* Actual functions to implement the PA specific code for the assembler. */
1103 /* Returns a pointer to the label_symbol_struct for the current space.
1104 or NULL if no label_symbol_struct exists for the current space. */
1106 static label_symbol_struct
*
1109 label_symbol_struct
*label_chain
;
1110 sd_chain_struct
*space_chain
= current_space
;
1112 for (label_chain
= label_symbols_rootp
;
1114 label_chain
= label_chain
->lss_next
)
1115 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1121 /* Defines a label for the current space. If one is already defined,
1122 this function will replace it with the new label. */
1125 pa_define_label (symbol
)
1128 label_symbol_struct
*label_chain
= pa_get_label ();
1129 sd_chain_struct
*space_chain
= current_space
;
1132 label_chain
->lss_label
= symbol
;
1135 /* Create a new label entry and add it to the head of the chain. */
1137 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1138 label_chain
->lss_label
= symbol
;
1139 label_chain
->lss_space
= space_chain
;
1140 label_chain
->lss_next
= NULL
;
1142 if (label_symbols_rootp
)
1143 label_chain
->lss_next
= label_symbols_rootp
;
1145 label_symbols_rootp
= label_chain
;
1149 /* Removes a label definition for the current space.
1150 If there is no label_symbol_struct entry, then no action is taken. */
1153 pa_undefine_label ()
1155 label_symbol_struct
*label_chain
;
1156 label_symbol_struct
*prev_label_chain
= NULL
;
1157 sd_chain_struct
*space_chain
= current_space
;
1159 for (label_chain
= label_symbols_rootp
;
1161 label_chain
= label_chain
->lss_next
)
1163 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1165 /* Remove the label from the chain and free its memory. */
1166 if (prev_label_chain
)
1167 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1169 label_symbols_rootp
= label_chain
->lss_next
;
1174 prev_label_chain
= label_chain
;
1179 /* An HPPA-specific version of fix_new. This is required because the HPPA
1180 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1181 results in the creation of an instance of an hppa_fix_struct. An
1182 hppa_fix_struct stores the extra information along with a pointer to the
1183 original fixS. This is attached to the original fixup via the
1184 tc_fix_data field. */
1187 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1188 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1192 symbolS
*add_symbol
;
1196 bfd_reloc_code_real_type r_type
;
1197 enum hppa_reloc_field_selector_type r_field
;
1204 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1205 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1208 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1210 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1211 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1212 hppa_fix
->fx_r_type
= r_type
;
1213 hppa_fix
->fx_r_field
= r_field
;
1214 hppa_fix
->fx_r_format
= r_format
;
1215 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1216 hppa_fix
->segment
= now_seg
;
1219 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1221 /* If necessary call BFD backend function to attach the
1222 unwind bits to the target dependent parts of a BFD symbol.
1224 #ifdef obj_attach_unwind_info
1225 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1229 /* foo-$global$ is used to access non-automatic storage. $global$
1230 is really just a marker and has served its purpose, so eliminate
1231 it now so as not to confuse write.c. */
1232 if (new_fix
->fx_subsy
1233 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1234 new_fix
->fx_subsy
= NULL
;
1237 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1238 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1241 parse_cons_expression_hppa (exp
)
1244 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1248 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1249 hppa_field_selector is set by the parse_cons_expression_hppa. */
1252 cons_fix_new_hppa (frag
, where
, size
, exp
)
1258 unsigned int rel_type
;
1260 /* Get a base relocation type. We use NONE for complex as it should
1261 always be reducable to a constant in the cases we generate. */
1262 if (is_DP_relative (*exp
))
1263 rel_type
= R_HPPA_GOTOFF
;
1264 else if (is_complex (*exp
))
1265 rel_type
= R_HPPA_NONE
;
1269 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1270 as_warn ("Invalid field selector. Assuming F%%.");
1272 fix_new_hppa (frag
, where
, size
,
1273 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1274 hppa_field_selector
, 32, 0, (char *) 0);
1276 /* Reset field selector to its default state. */
1277 hppa_field_selector
= 0;
1280 /* This function is called once, at assembler startup time. It should
1281 set up all the tables, etc. that the MD part of the assembler will need. */
1286 const char *retval
= NULL
;
1290 last_call_info
= NULL
;
1291 call_info_root
= NULL
;
1293 /* Folding of text and data segments fails miserably on the PA.
1294 Warn user and disable "-R" option. */
1295 if (flag_readonly_data_in_text
)
1297 as_warn ("-R option not supported on this target.");
1298 flag_readonly_data_in_text
= 0;
1303 op_hash
= hash_new ();
1305 while (i
< NUMOPCODES
)
1307 const char *name
= pa_opcodes
[i
].name
;
1308 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1309 if (retval
!= NULL
&& *retval
!= '\0')
1311 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1316 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1317 != pa_opcodes
[i
].match
)
1319 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1320 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1325 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1329 as_fatal ("Broken assembler. No assembly attempted.");
1331 /* SOM will change text_section. To make sure we never put
1332 anything into the old one switch to the new one now. */
1333 subseg_set (text_section
, 0);
1335 dummy_symbol
= symbol_find_or_make ("L$dummy");
1336 S_SET_SEGMENT (dummy_symbol
, text_section
);
1339 /* Assemble a single instruction storing it into a frag. */
1346 /* The had better be something to assemble. */
1349 /* If we are within a procedure definition, make sure we've
1350 defined a label for the procedure; handle case where the
1351 label was defined after the .PROC directive.
1353 Note there's not need to diddle with the segment or fragment
1354 for the label symbol in this case. We have already switched
1355 into the new $CODE$ subspace at this point. */
1356 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1358 label_symbol_struct
*label_symbol
= pa_get_label ();
1362 if (label_symbol
->lss_label
)
1364 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1365 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1367 /* Also handle allocation of a fixup to hold the unwind
1368 information when the label appears after the proc/procend. */
1369 if (within_entry_exit
)
1371 char *where
= frag_more (0);
1373 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1374 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
1375 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1376 (char *) &last_call_info
->ci_unwind
.descriptor
);
1381 as_bad ("Missing function name for .PROC (corrupted label chain)");
1384 as_bad ("Missing function name for .PROC");
1387 /* Assemble the instruction. Results are saved into "the_insn". */
1390 /* Get somewhere to put the assembled instrution. */
1393 /* Output the opcode. */
1394 md_number_to_chars (to
, the_insn
.opcode
, 4);
1396 /* If necessary output more stuff. */
1397 if (the_insn
.reloc
!= R_HPPA_NONE
)
1398 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1399 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1400 the_insn
.reloc
, the_insn
.field_selector
,
1401 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1404 /* Do the real work for assembling a single instruction. Store results
1405 into the global "the_insn" variable. */
1411 char *error_message
= "";
1412 char *s
, c
, *argstart
, *name
, *save_s
;
1416 int cmpltr
, nullif
, flag
, cond
, num
;
1417 unsigned long opcode
;
1418 struct pa_opcode
*insn
;
1420 /* Skip to something interesting. */
1421 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1440 as_bad ("Unknown opcode: `%s'", str
);
1446 /* Convert everything into lower case. */
1449 if (isupper (*save_s
))
1450 *save_s
= tolower (*save_s
);
1454 /* Look up the opcode in the has table. */
1455 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1457 as_bad ("Unknown opcode: `%s'", str
);
1466 /* Mark the location where arguments for the instruction start, then
1467 start processing them. */
1471 /* Do some initialization. */
1472 opcode
= insn
->match
;
1473 bzero (&the_insn
, sizeof (the_insn
));
1475 the_insn
.reloc
= R_HPPA_NONE
;
1477 /* Build the opcode, checking as we go to make
1478 sure that the operands match. */
1479 for (args
= insn
->args
;; ++args
)
1484 /* End of arguments. */
1500 /* These must match exactly. */
1509 /* Handle a 5 bit register or control register field at 10. */
1512 num
= pa_parse_number (&s
, 0);
1513 CHECK_FIELD (num
, 31, 0, 0);
1514 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1516 /* Handle a 5 bit register field at 15. */
1518 num
= pa_parse_number (&s
, 0);
1519 CHECK_FIELD (num
, 31, 0, 0);
1520 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1522 /* Handle a 5 bit register field at 31. */
1525 num
= pa_parse_number (&s
, 0);
1526 CHECK_FIELD (num
, 31, 0, 0);
1527 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1529 /* Handle a 5 bit field length at 31. */
1531 num
= pa_get_absolute_expression (&the_insn
, &s
);
1533 CHECK_FIELD (num
, 32, 1, 0);
1534 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1536 /* Handle a 5 bit immediate at 15. */
1538 num
= pa_get_absolute_expression (&the_insn
, &s
);
1540 CHECK_FIELD (num
, 15, -16, 0);
1541 low_sign_unext (num
, 5, &num
);
1542 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1544 /* Handle a 5 bit immediate at 31. */
1546 num
= pa_get_absolute_expression (&the_insn
, &s
);
1548 CHECK_FIELD (num
, 15, -16, 0)
1549 low_sign_unext (num
, 5, &num
);
1550 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1552 /* Handle an unsigned 5 bit immediate at 31. */
1554 num
= pa_get_absolute_expression (&the_insn
, &s
);
1556 CHECK_FIELD (num
, 31, 0, 0);
1557 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1559 /* Handle an unsigned 5 bit immediate at 15. */
1561 num
= pa_get_absolute_expression (&the_insn
, &s
);
1563 CHECK_FIELD (num
, 31, 0, 0);
1564 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1566 /* Handle a 2 bit space identifier at 17. */
1568 num
= pa_parse_number (&s
, 0);
1569 CHECK_FIELD (num
, 3, 0, 1);
1570 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1572 /* Handle a 3 bit space identifier at 18. */
1574 num
= pa_parse_number (&s
, 0);
1575 CHECK_FIELD (num
, 7, 0, 1);
1576 dis_assemble_3 (num
, &num
);
1577 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1579 /* Handle a completer for an indexing load or store. */
1585 while (*s
== ',' && i
< 2)
1588 if (strncasecmp (s
, "sm", 2) == 0)
1595 else if (strncasecmp (s
, "m", 1) == 0)
1597 else if (strncasecmp (s
, "s", 1) == 0)
1600 as_bad ("Invalid Indexed Load Completer.");
1605 as_bad ("Invalid Indexed Load Completer Syntax.");
1607 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1610 /* Handle a short load/store completer. */
1618 if (strncasecmp (s
, "ma", 2) == 0)
1623 else if (strncasecmp (s
, "mb", 2) == 0)
1629 as_bad ("Invalid Short Load/Store Completer.");
1633 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1636 /* Handle a stbys completer. */
1642 while (*s
== ',' && i
< 2)
1645 if (strncasecmp (s
, "m", 1) == 0)
1647 else if (strncasecmp (s
, "b", 1) == 0)
1649 else if (strncasecmp (s
, "e", 1) == 0)
1652 as_bad ("Invalid Store Bytes Short Completer");
1657 as_bad ("Invalid Store Bytes Short Completer");
1659 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1662 /* Handle a non-negated compare/stubtract condition. */
1664 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1667 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1670 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1672 /* Handle a negated or non-negated compare/subtract condition. */
1675 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1679 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1682 as_bad ("Invalid Compare/Subtract Condition.");
1687 /* Negated condition requires an opcode change. */
1691 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1693 /* Handle non-negated add condition. */
1695 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1698 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1701 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1703 /* Handle a negated or non-negated add condition. */
1706 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1710 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1713 as_bad ("Invalid Compare/Subtract Condition");
1718 /* Negated condition requires an opcode change. */
1722 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1724 /* Handle a compare/subtract condition. */
1731 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1736 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1739 as_bad ("Invalid Compare/Subtract Condition");
1743 opcode
|= cmpltr
<< 13;
1744 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1746 /* Handle a non-negated add condition. */
1755 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1759 if (strcmp (name
, "=") == 0)
1761 else if (strcmp (name
, "<") == 0)
1763 else if (strcmp (name
, "<=") == 0)
1765 else if (strcasecmp (name
, "nuv") == 0)
1767 else if (strcasecmp (name
, "znv") == 0)
1769 else if (strcasecmp (name
, "sv") == 0)
1771 else if (strcasecmp (name
, "od") == 0)
1773 else if (strcasecmp (name
, "n") == 0)
1775 else if (strcasecmp (name
, "tr") == 0)
1780 else if (strcmp (name
, "<>") == 0)
1785 else if (strcmp (name
, ">=") == 0)
1790 else if (strcmp (name
, ">") == 0)
1795 else if (strcasecmp (name
, "uv") == 0)
1800 else if (strcasecmp (name
, "vnz") == 0)
1805 else if (strcasecmp (name
, "nsv") == 0)
1810 else if (strcasecmp (name
, "ev") == 0)
1816 as_bad ("Invalid Add Condition: %s", name
);
1819 nullif
= pa_parse_nullif (&s
);
1820 opcode
|= nullif
<< 1;
1821 opcode
|= cmpltr
<< 13;
1822 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1824 /* HANDLE a logical instruction condition. */
1832 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1836 if (strcmp (name
, "=") == 0)
1838 else if (strcmp (name
, "<") == 0)
1840 else if (strcmp (name
, "<=") == 0)
1842 else if (strcasecmp (name
, "od") == 0)
1844 else if (strcasecmp (name
, "tr") == 0)
1849 else if (strcmp (name
, "<>") == 0)
1854 else if (strcmp (name
, ">=") == 0)
1859 else if (strcmp (name
, ">") == 0)
1864 else if (strcasecmp (name
, "ev") == 0)
1870 as_bad ("Invalid Logical Instruction Condition.");
1873 opcode
|= cmpltr
<< 13;
1874 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1876 /* Handle a unit instruction condition. */
1883 if (strncasecmp (s
, "sbz", 3) == 0)
1888 else if (strncasecmp (s
, "shz", 3) == 0)
1893 else if (strncasecmp (s
, "sdc", 3) == 0)
1898 else if (strncasecmp (s
, "sbc", 3) == 0)
1903 else if (strncasecmp (s
, "shc", 3) == 0)
1908 else if (strncasecmp (s
, "tr", 2) == 0)
1914 else if (strncasecmp (s
, "nbz", 3) == 0)
1920 else if (strncasecmp (s
, "nhz", 3) == 0)
1926 else if (strncasecmp (s
, "ndc", 3) == 0)
1932 else if (strncasecmp (s
, "nbc", 3) == 0)
1938 else if (strncasecmp (s
, "nhc", 3) == 0)
1945 as_bad ("Invalid Logical Instruction Condition.");
1947 opcode
|= cmpltr
<< 13;
1948 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1950 /* Handle a shift/extract/deposit condition. */
1958 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1962 if (strcmp (name
, "=") == 0)
1964 else if (strcmp (name
, "<") == 0)
1966 else if (strcasecmp (name
, "od") == 0)
1968 else if (strcasecmp (name
, "tr") == 0)
1970 else if (strcmp (name
, "<>") == 0)
1972 else if (strcmp (name
, ">=") == 0)
1974 else if (strcasecmp (name
, "ev") == 0)
1976 /* Handle movb,n. Put things back the way they were.
1977 This includes moving s back to where it started. */
1978 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1985 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1988 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1990 /* Handle bvb and bb conditions. */
1996 if (strncmp (s
, "<", 1) == 0)
2001 else if (strncmp (s
, ">=", 2) == 0)
2007 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2009 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2011 /* Handle a system control completer. */
2013 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2021 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2023 /* Handle a nullification completer for branch instructions. */
2025 nullif
= pa_parse_nullif (&s
);
2026 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2028 /* Handle a nullification completer for copr and spop insns. */
2030 nullif
= pa_parse_nullif (&s
);
2031 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2033 /* Handle a 11 bit immediate at 31. */
2035 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2038 if (the_insn
.exp
.X_op
== O_constant
)
2040 num
= evaluate_absolute (&the_insn
);
2041 CHECK_FIELD (num
, 1023, -1024, 0);
2042 low_sign_unext (num
, 11, &num
);
2043 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2047 if (is_DP_relative (the_insn
.exp
))
2048 the_insn
.reloc
= R_HPPA_GOTOFF
;
2049 else if (is_PC_relative (the_insn
.exp
))
2050 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2052 the_insn
.reloc
= R_HPPA
;
2053 the_insn
.format
= 11;
2057 /* Handle a 14 bit immediate at 31. */
2059 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2062 if (the_insn
.exp
.X_op
== O_constant
)
2064 num
= evaluate_absolute (&the_insn
);
2065 CHECK_FIELD (num
, 8191, -8192, 0);
2066 low_sign_unext (num
, 14, &num
);
2067 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2071 if (is_DP_relative (the_insn
.exp
))
2072 the_insn
.reloc
= R_HPPA_GOTOFF
;
2073 else if (is_PC_relative (the_insn
.exp
))
2074 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2076 the_insn
.reloc
= R_HPPA
;
2077 the_insn
.format
= 14;
2081 /* Handle a 21 bit immediate at 31. */
2083 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2086 if (the_insn
.exp
.X_op
== O_constant
)
2088 num
= evaluate_absolute (&the_insn
);
2089 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2090 dis_assemble_21 (num
, &num
);
2091 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2095 if (is_DP_relative (the_insn
.exp
))
2096 the_insn
.reloc
= R_HPPA_GOTOFF
;
2097 else if (is_PC_relative (the_insn
.exp
))
2098 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2100 the_insn
.reloc
= R_HPPA
;
2101 the_insn
.format
= 21;
2105 /* Handle a 12 bit branch displacement. */
2107 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2111 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2113 unsigned int w1
, w
, result
;
2115 num
= evaluate_absolute (&the_insn
);
2118 as_bad ("Branch to unaligned address");
2121 CHECK_FIELD (num
, 8191, -8192, 0);
2122 sign_unext ((num
- 8) >> 2, 12, &result
);
2123 dis_assemble_12 (result
, &w1
, &w
);
2124 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2128 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2129 the_insn
.format
= 12;
2130 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2131 bzero (&last_call_desc
, sizeof (struct call_desc
));
2136 /* Handle a 17 bit branch displacement. */
2138 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2142 if (!the_insn
.exp
.X_add_symbol
2143 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2146 unsigned int w2
, w1
, w
, result
;
2148 num
= evaluate_absolute (&the_insn
);
2151 as_bad ("Branch to unaligned address");
2154 CHECK_FIELD (num
, 262143, -262144, 0);
2156 if (the_insn
.exp
.X_add_symbol
)
2159 sign_unext (num
>> 2, 17, &result
);
2160 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2161 INSERT_FIELD_AND_CONTINUE (opcode
,
2162 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2166 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2167 the_insn
.format
= 17;
2168 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2169 bzero (&last_call_desc
, sizeof (struct call_desc
));
2173 /* Handle an absolute 17 bit branch target. */
2175 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2179 if (!the_insn
.exp
.X_add_symbol
2180 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2183 unsigned int w2
, w1
, w
, result
;
2185 num
= evaluate_absolute (&the_insn
);
2188 as_bad ("Branch to unaligned address");
2191 CHECK_FIELD (num
, 262143, -262144, 0);
2193 if (the_insn
.exp
.X_add_symbol
)
2196 sign_unext (num
>> 2, 17, &result
);
2197 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2198 INSERT_FIELD_AND_CONTINUE (opcode
,
2199 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2203 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2204 the_insn
.format
= 17;
2208 /* Handle a 5 bit shift count at 26. */
2210 num
= pa_get_absolute_expression (&the_insn
, &s
);
2212 CHECK_FIELD (num
, 31, 0, 0);
2213 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2215 /* Handle a 5 bit bit position at 26. */
2217 num
= pa_get_absolute_expression (&the_insn
, &s
);
2219 CHECK_FIELD (num
, 31, 0, 0);
2220 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2222 /* Handle a 5 bit immediate at 10. */
2224 num
= pa_get_absolute_expression (&the_insn
, &s
);
2226 CHECK_FIELD (num
, 31, 0, 0);
2227 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2229 /* Handle a 13 bit immediate at 18. */
2231 num
= pa_get_absolute_expression (&the_insn
, &s
);
2233 CHECK_FIELD (num
, 8191, 0, 0);
2234 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2236 /* Handle a 26 bit immediate at 31. */
2238 num
= pa_get_absolute_expression (&the_insn
, &s
);
2240 CHECK_FIELD (num
, 671108864, 0, 0);
2241 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2243 /* Handle a 3 bit SFU identifier at 25. */
2246 as_bad ("Invalid SFU identifier");
2247 num
= pa_get_absolute_expression (&the_insn
, &s
);
2249 CHECK_FIELD (num
, 7, 0, 0);
2250 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2252 /* Handle a 20 bit SOP field for spop0. */
2254 num
= pa_get_absolute_expression (&the_insn
, &s
);
2256 CHECK_FIELD (num
, 1048575, 0, 0);
2257 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2258 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2260 /* Handle a 15bit SOP field for spop1. */
2262 num
= pa_get_absolute_expression (&the_insn
, &s
);
2264 CHECK_FIELD (num
, 32767, 0, 0);
2265 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2267 /* Handle a 10bit SOP field for spop3. */
2269 num
= pa_get_absolute_expression (&the_insn
, &s
);
2271 CHECK_FIELD (num
, 1023, 0, 0);
2272 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2273 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2275 /* Handle a 15 bit SOP field for spop2. */
2277 num
= pa_get_absolute_expression (&the_insn
, &s
);
2279 CHECK_FIELD (num
, 32767, 0, 0);
2280 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2281 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2283 /* Handle a 3-bit co-processor ID field. */
2286 as_bad ("Invalid COPR identifier");
2287 num
= pa_get_absolute_expression (&the_insn
, &s
);
2289 CHECK_FIELD (num
, 7, 0, 0);
2290 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2292 /* Handle a 22bit SOP field for copr. */
2294 num
= pa_get_absolute_expression (&the_insn
, &s
);
2296 CHECK_FIELD (num
, 4194303, 0, 0);
2297 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2298 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2300 /* Handle a source FP operand format completer. */
2302 flag
= pa_parse_fp_format (&s
);
2303 the_insn
.fpof1
= flag
;
2304 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2306 /* Handle a destination FP operand format completer. */
2308 /* pa_parse_format needs the ',' prefix. */
2310 flag
= pa_parse_fp_format (&s
);
2311 the_insn
.fpof2
= flag
;
2312 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2314 /* Handle FP compare conditions. */
2316 cond
= pa_parse_fp_cmp_cond (&s
);
2317 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2319 /* Handle L/R register halves like 't'. */
2322 struct pa_89_fp_reg_struct result
;
2324 pa_parse_number (&s
, &result
);
2325 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2326 opcode
|= result
.number_part
;
2328 /* 0x30 opcodes are FP arithmetic operation opcodes
2329 and need to be turned into 0x38 opcodes. This
2330 is not necessary for loads/stores. */
2331 if (need_89_opcode (&the_insn
, &result
)
2332 && ((opcode
& 0xfc000000) == 0x30000000))
2335 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2338 /* Handle L/R register halves like 'b'. */
2341 struct pa_89_fp_reg_struct result
;
2343 pa_parse_number (&s
, &result
);
2344 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2345 opcode
|= result
.number_part
<< 21;
2346 if (need_89_opcode (&the_insn
, &result
))
2348 opcode
|= (result
.l_r_select
& 1) << 7;
2354 /* Handle L/R register halves like 'x'. */
2357 struct pa_89_fp_reg_struct result
;
2359 pa_parse_number (&s
, &result
);
2360 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2361 opcode
|= (result
.number_part
& 0x1f) << 16;
2362 if (need_89_opcode (&the_insn
, &result
))
2364 opcode
|= (result
.l_r_select
& 1) << 12;
2370 /* Handle a 5 bit register field at 10. */
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
, 21);
2385 /* Handle a 5 bit register field at 15. */
2388 struct pa_89_fp_reg_struct result
;
2390 pa_parse_number (&s
, &result
);
2391 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2392 if (the_insn
.fpof1
== SGL
)
2394 result
.number_part
&= 0xF;
2395 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2397 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2400 /* Handle a 5 bit register field at 31. */
2403 struct pa_89_fp_reg_struct result
;
2405 pa_parse_number (&s
, &result
);
2406 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2407 if (the_insn
.fpof1
== SGL
)
2409 result
.number_part
&= 0xF;
2410 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2412 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2415 /* Handle a 5 bit register field at 20. */
2418 struct pa_89_fp_reg_struct result
;
2420 pa_parse_number (&s
, &result
);
2421 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2422 if (the_insn
.fpof1
== SGL
)
2424 result
.number_part
&= 0xF;
2425 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2427 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2430 /* Handle a 5 bit register field at 25. */
2433 struct pa_89_fp_reg_struct result
;
2435 pa_parse_number (&s
, &result
);
2436 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2437 if (the_insn
.fpof1
== SGL
)
2439 result
.number_part
&= 0xF;
2440 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2442 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2445 /* Handle a floating point operand format at 26.
2446 Only allows single and double precision. */
2448 flag
= pa_parse_fp_format (&s
);
2454 the_insn
.fpof1
= flag
;
2460 as_bad ("Invalid Floating Point Operand Format.");
2470 /* Check if the args matched. */
2473 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2474 && !strcmp (insn
->name
, insn
[1].name
))
2482 as_bad ("Invalid operands %s", error_message
);
2489 the_insn
.opcode
= opcode
;
2492 /* Turn a string in input_line_pointer into a floating point constant of type
2493 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2494 emitted is stored in *sizeP . An error message or NULL is returned. */
2496 #define MAX_LITTLENUMS 6
2499 md_atof (type
, litP
, sizeP
)
2505 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2506 LITTLENUM_TYPE
*wordP
;
2538 return "Bad call to MD_ATOF()";
2540 t
= atof_ieee (input_line_pointer
, type
, words
);
2542 input_line_pointer
= t
;
2543 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2544 for (wordP
= words
; prec
--;)
2546 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2547 litP
+= sizeof (LITTLENUM_TYPE
);
2552 /* Write out big-endian. */
2555 md_number_to_chars (buf
, val
, n
)
2560 number_to_chars_bigendian (buf
, val
, n
);
2563 /* Translate internal representation of relocation info to BFD target
2567 tc_gen_reloc (section
, fixp
)
2572 struct hppa_fix_struct
*hppa_fixp
;
2573 bfd_reloc_code_real_type code
;
2574 static arelent
*no_relocs
= NULL
;
2576 bfd_reloc_code_real_type
**codes
;
2580 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2581 if (fixp
->fx_addsy
== 0)
2583 assert (hppa_fixp
!= 0);
2584 assert (section
!= 0);
2586 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2587 assert (reloc
!= 0);
2589 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2590 codes
= hppa_gen_reloc_type (stdoutput
,
2592 hppa_fixp
->fx_r_format
,
2593 hppa_fixp
->fx_r_field
);
2595 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2598 relocs
= (arelent
**)
2599 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2600 assert (relocs
!= 0);
2602 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2603 sizeof (arelent
) * n_relocs
);
2605 assert (reloc
!= 0);
2607 for (i
= 0; i
< n_relocs
; i
++)
2608 relocs
[i
] = &reloc
[i
];
2610 relocs
[n_relocs
] = NULL
;
2613 switch (fixp
->fx_r_type
)
2616 assert (n_relocs
== 1);
2620 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2621 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2622 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2623 reloc
->addend
= 0; /* default */
2625 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2627 /* Now, do any processing that is dependent on the relocation type. */
2630 case R_PARISC_PLABEL32
:
2631 case R_PARISC_PLABEL21L
:
2632 case R_PARISC_PLABEL14R
:
2633 /* For plabel relocations, the addend of the
2634 relocation should be either 0 (no static link) or 2
2635 (static link required).
2637 FIXME: We always assume no static link! */
2641 case R_PARISC_PCREL21L
:
2642 case R_PARISC_PCREL17R
:
2643 case R_PARISC_PCREL17F
:
2644 case R_PARISC_PCREL17C
:
2645 case R_PARISC_PCREL14R
:
2646 case R_PARISC_PCREL14F
:
2647 /* The constant is stored in the instruction. */
2648 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2651 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
)
2654 reloc
->addend
= fixp
->fx_addnumber
;
2661 /* Walk over reach relocation returned by the BFD backend. */
2662 for (i
= 0; i
< n_relocs
; i
++)
2666 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2667 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2668 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2674 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2679 /* For plabel relocations, the addend of the
2680 relocation should be either 0 (no static link) or 2
2681 (static link required).
2683 FIXME: We always assume no static link! */
2684 relocs
[i
]->addend
= 0;
2695 /* There is no symbol or addend associated with these fixups. */
2696 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2697 relocs
[i
]->addend
= 0;
2701 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
)
2702 relocs
[i
]->addend
= 0;
2704 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2713 /* Process any machine dependent frag types. */
2716 md_convert_frag (abfd
, sec
, fragP
)
2718 register asection
*sec
;
2719 register fragS
*fragP
;
2721 unsigned int address
;
2723 if (fragP
->fr_type
== rs_machine_dependent
)
2725 switch ((int) fragP
->fr_subtype
)
2728 fragP
->fr_type
= rs_fill
;
2729 know (fragP
->fr_var
== 1);
2730 know (fragP
->fr_next
);
2731 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2732 if (address
% fragP
->fr_offset
)
2735 fragP
->fr_next
->fr_address
2740 fragP
->fr_offset
= 0;
2746 /* Round up a section size to the appropriate boundary. */
2749 md_section_align (segment
, size
)
2753 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2754 int align2
= (1 << align
) - 1;
2756 return (size
+ align2
) & ~align2
;
2759 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2761 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2763 addressT from_addr
, to_addr
;
2767 fprintf (stderr
, "pa_create_short_jmp\n");
2771 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2773 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2775 addressT from_addr
, to_addr
;
2779 fprintf (stderr
, "pa_create_long_jump\n");
2783 /* Return the approximate size of a frag before relaxation has occurred. */
2785 md_estimate_size_before_relax (fragP
, segment
)
2786 register fragS
*fragP
;
2793 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2799 CONST
char *md_shortopts
= "";
2800 struct option md_longopts
[] = {
2801 {NULL
, no_argument
, NULL
, 0}
2803 size_t md_longopts_size
= sizeof(md_longopts
);
2806 md_parse_option (c
, arg
)
2814 md_show_usage (stream
)
2819 /* We have no need to default values of symbols. */
2822 md_undefined_symbol (name
)
2828 /* Parse an operand that is machine-specific.
2829 We just return without modifying the expression as we have nothing
2833 md_operand (expressionP
)
2834 expressionS
*expressionP
;
2838 /* Apply a fixup to an instruction. */
2841 md_apply_fix (fixP
, valp
)
2845 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2846 struct hppa_fix_struct
*hppa_fixP
;
2847 long new_val
, result
;
2848 unsigned int w1
, w2
, w
;
2851 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2852 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2853 never be "applied" (they are just markers). */
2855 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2856 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2860 /* There should have been an HPPA specific fixup associated
2861 with the GAS fixup. */
2864 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2865 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2867 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2870 /* Remember this value for emit_reloc. FIXME, is this braindamage
2871 documented anywhere!?! */
2872 fixP
->fx_addnumber
= val
;
2874 /* Check if this is an undefined symbol. No relocation can
2875 possibly be performed in this case.
2877 Also avoid doing anything for pc-relative fixups in which the
2878 fixup is in a different space than the symbol it references. */
2879 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2881 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
)
2884 && S_GET_SEGMENT (fixP
->fx_addsy
) != hppa_fixP
->segment
)
2887 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2890 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
2891 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
2892 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
2893 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
2894 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
2895 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
2896 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
2897 && !(fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
))
2898 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
2904 /* Handle all opcodes with the 'j' operand type. */
2906 CHECK_FIELD (new_val
, 8191, -8192, 0);
2908 /* Mask off 14 bits to be changed. */
2909 bfd_put_32 (stdoutput
,
2910 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2912 low_sign_unext (new_val
, 14, &result
);
2915 /* Handle all opcodes with the 'k' operand type. */
2917 CHECK_FIELD (new_val
, 2097152, 0, 0);
2919 /* Mask off 21 bits to be changed. */
2920 bfd_put_32 (stdoutput
,
2921 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2923 dis_assemble_21 (new_val
, &result
);
2926 /* Handle all the opcodes with the 'i' operand type. */
2928 CHECK_FIELD (new_val
, 1023, -1023, 0);
2930 /* Mask off 11 bits to be changed. */
2931 bfd_put_32 (stdoutput
,
2932 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2934 low_sign_unext (new_val
, 11, &result
);
2937 /* Handle all the opcodes with the 'w' operand type. */
2939 CHECK_FIELD (new_val
, 8191, -8192, 0)
2941 /* Mask off 11 bits to be changed. */
2942 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2943 bfd_put_32 (stdoutput
,
2944 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2947 dis_assemble_12 (result
, &w1
, &w
);
2948 result
= ((w1
<< 2) | w
);
2951 /* Handle some of the opcodes with the 'W' operand type. */
2954 #define stub_needed(CALLER, CALLEE) \
2955 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2956 /* It is necessary to force PC-relative calls/jumps to have a
2957 relocation entry if they're going to need either a argument
2958 relocation or long call stub. FIXME. Can't we need the same
2959 for absolute calls? */
2961 && (stub_needed (((obj_symbol_type
*)
2962 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2963 hppa_fixP
->fx_arg_reloc
)))
2967 CHECK_FIELD (new_val
, 262143, -262144, 0);
2969 /* Mask off 17 bits to be changed. */
2970 bfd_put_32 (stdoutput
,
2971 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
2973 sign_unext ((new_val
- 8) >> 2, 17, &result
);
2974 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2975 result
= ((w2
<< 2) | (w1
<< 16) | w
);
2980 fixP
->fx_addnumber
= fixP
->fx_offset
;
2981 /* If we have a real relocation, then we want zero to
2982 be stored in the object file. If no relocation is going
2983 to be emitted, then we need to store new_val into the
2986 bfd_put_32 (stdoutput
, 0, buf
);
2988 bfd_put_32 (stdoutput
, new_val
, buf
);
2996 as_bad ("Unknown relocation encountered in md_apply_fix.");
3000 /* Insert the relocation. */
3001 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3006 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3007 (unsigned int) fixP
, fixP
->fx_r_type
);
3012 /* Exactly what point is a PC-relative offset relative TO?
3013 On the PA, they're relative to the address of the offset. */
3016 md_pcrel_from (fixP
)
3019 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3022 /* Return nonzero if the input line pointer is at the end of
3026 is_end_of_statement ()
3028 return ((*input_line_pointer
== '\n')
3029 || (*input_line_pointer
== ';')
3030 || (*input_line_pointer
== '!'));
3033 /* Read a number from S. The number might come in one of many forms,
3034 the most common will be a hex or decimal constant, but it could be
3035 a pre-defined register (Yuk!), or an absolute symbol.
3037 Return a number or -1 for failure.
3039 When parsing PA-89 FP register numbers RESULT will be
3040 the address of a structure to return information about
3041 L/R half of FP registers, store results there as appropriate.
3043 pa_parse_number can not handle negative constants and will fail
3044 horribly if it is passed such a constant. */
3047 pa_parse_number (s
, result
)
3049 struct pa_89_fp_reg_struct
*result
;
3058 /* Skip whitespace before the number. */
3059 while (*p
== ' ' || *p
== '\t')
3062 /* Store info in RESULT if requested by caller. */
3065 result
->number_part
= -1;
3066 result
->l_r_select
= -1;
3072 /* Looks like a number. */
3075 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3077 /* The number is specified in hex. */
3079 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3080 || ((*p
>= 'A') && (*p
<= 'F')))
3083 num
= num
* 16 + *p
- '0';
3084 else if (*p
>= 'a' && *p
<= 'f')
3085 num
= num
* 16 + *p
- 'a' + 10;
3087 num
= num
* 16 + *p
- 'A' + 10;
3093 /* The number is specified in decimal. */
3094 while (isdigit (*p
))
3096 num
= num
* 10 + *p
- '0';
3101 /* Store info in RESULT if requested by the caller. */
3104 result
->number_part
= num
;
3106 if (IS_R_SELECT (p
))
3108 result
->l_r_select
= 1;
3111 else if (IS_L_SELECT (p
))
3113 result
->l_r_select
= 0;
3117 result
->l_r_select
= 0;
3122 /* The number might be a predefined register. */
3127 /* Tege hack: Special case for general registers as the general
3128 code makes a binary search with case translation, and is VERY
3133 if (*p
== 'e' && *(p
+ 1) == 't'
3134 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3137 num
= *p
- '0' + 28;
3145 else if (!isdigit (*p
))
3148 as_bad ("Undefined register: '%s'.", name
);
3154 num
= num
* 10 + *p
++ - '0';
3155 while (isdigit (*p
));
3160 /* Do a normal register search. */
3161 while (is_part_of_name (c
))
3167 status
= reg_name_search (name
);
3173 as_bad ("Undefined register: '%s'.", name
);
3179 /* Store info in RESULT if requested by caller. */
3182 result
->number_part
= num
;
3183 if (IS_R_SELECT (p
- 1))
3184 result
->l_r_select
= 1;
3185 else if (IS_L_SELECT (p
- 1))
3186 result
->l_r_select
= 0;
3188 result
->l_r_select
= 0;
3193 /* And finally, it could be a symbol in the absolute section which
3194 is effectively a constant. */
3198 while (is_part_of_name (c
))
3204 if ((sym
= symbol_find (name
)) != NULL
)
3206 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3207 num
= S_GET_VALUE (sym
);
3211 as_bad ("Non-absolute symbol: '%s'.", name
);
3217 /* There is where we'd come for an undefined symbol
3218 or for an empty string. For an empty string we
3219 will return zero. That's a concession made for
3220 compatability with the braindamaged HP assemblers. */
3226 as_bad ("Undefined absolute constant: '%s'.", name
);
3232 /* Store info in RESULT if requested by caller. */
3235 result
->number_part
= num
;
3236 if (IS_R_SELECT (p
- 1))
3237 result
->l_r_select
= 1;
3238 else if (IS_L_SELECT (p
- 1))
3239 result
->l_r_select
= 0;
3241 result
->l_r_select
= 0;
3249 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3251 /* Given NAME, find the register number associated with that name, return
3252 the integer value associated with the given name or -1 on failure. */
3255 reg_name_search (name
)
3258 int middle
, low
, high
;
3262 high
= REG_NAME_CNT
- 1;
3266 middle
= (low
+ high
) / 2;
3267 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3273 return pre_defined_registers
[middle
].value
;
3275 while (low
<= high
);
3281 /* Return nonzero if the given INSN and L/R information will require
3282 a new PA-89 opcode. */
3285 need_89_opcode (insn
, result
)
3287 struct pa_89_fp_reg_struct
*result
;
3289 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3295 /* Parse a condition for a fcmp instruction. Return the numerical
3296 code associated with the condition. */
3299 pa_parse_fp_cmp_cond (s
)
3306 for (i
= 0; i
< 32; i
++)
3308 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3309 strlen (fp_cond_map
[i
].string
)) == 0)
3311 cond
= fp_cond_map
[i
].cond
;
3312 *s
+= strlen (fp_cond_map
[i
].string
);
3313 /* If not a complete match, back up the input string and
3315 if (**s
!= ' ' && **s
!= '\t')
3317 *s
-= strlen (fp_cond_map
[i
].string
);
3320 while (**s
== ' ' || **s
== '\t')
3326 as_bad ("Invalid FP Compare Condition: %s", *s
);
3328 /* Advance over the bogus completer. */
3329 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3335 /* Parse an FP operand format completer returning the completer
3338 static fp_operand_format
3339 pa_parse_fp_format (s
)
3348 if (strncasecmp (*s
, "sgl", 3) == 0)
3353 else if (strncasecmp (*s
, "dbl", 3) == 0)
3358 else if (strncasecmp (*s
, "quad", 4) == 0)
3365 format
= ILLEGAL_FMT
;
3366 as_bad ("Invalid FP Operand Format: %3s", *s
);
3373 /* Convert from a selector string into a selector type. */
3376 pa_chk_field_selector (str
)
3379 int middle
, low
, high
;
3383 /* Read past any whitespace. */
3384 /* FIXME: should we read past newlines and formfeeds??? */
3385 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3388 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3389 name
[0] = tolower ((*str
)[0]),
3391 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3392 name
[0] = tolower ((*str
)[0]),
3393 name
[1] = tolower ((*str
)[1]),
3399 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3403 middle
= (low
+ high
) / 2;
3404 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3411 *str
+= strlen (name
) + 1;
3412 return selector_table
[middle
].field_selector
;
3415 while (low
<= high
);
3420 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3423 get_expression (str
)
3429 save_in
= input_line_pointer
;
3430 input_line_pointer
= str
;
3431 seg
= expression (&the_insn
.exp
);
3432 if (!(seg
== absolute_section
3433 || seg
== undefined_section
3434 || SEG_NORMAL (seg
)))
3436 as_warn ("Bad segment in expression.");
3437 expr_end
= input_line_pointer
;
3438 input_line_pointer
= save_in
;
3441 expr_end
= input_line_pointer
;
3442 input_line_pointer
= save_in
;
3446 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3448 pa_get_absolute_expression (insn
, strp
)
3454 insn
->field_selector
= pa_chk_field_selector (strp
);
3455 save_in
= input_line_pointer
;
3456 input_line_pointer
= *strp
;
3457 expression (&insn
->exp
);
3458 if (insn
->exp
.X_op
!= O_constant
)
3460 as_bad ("Bad segment (should be absolute).");
3461 expr_end
= input_line_pointer
;
3462 input_line_pointer
= save_in
;
3465 expr_end
= input_line_pointer
;
3466 input_line_pointer
= save_in
;
3467 return evaluate_absolute (insn
);
3470 /* Evaluate an absolute expression EXP which may be modified by
3471 the selector FIELD_SELECTOR. Return the value of the expression. */
3473 evaluate_absolute (insn
)
3478 int field_selector
= insn
->field_selector
;
3481 value
= exp
.X_add_number
;
3483 switch (field_selector
)
3489 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3491 if (value
& 0x00000400)
3493 value
= (value
& 0xfffff800) >> 11;
3496 /* Sign extend from bit 21. */
3498 if (value
& 0x00000400)
3499 value
|= 0xfffff800;
3504 /* Arithmetic shift right 11 bits. */
3506 value
= (value
& 0xfffff800) >> 11;
3509 /* Set bits 0-20 to zero. */
3511 value
= value
& 0x7ff;
3514 /* Add 0x800 and arithmetic shift right 11 bits. */
3517 value
= (value
& 0xfffff800) >> 11;
3520 /* Set bitgs 0-21 to one. */
3522 value
|= 0xfffff800;
3525 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3527 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3531 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3536 BAD_CASE (field_selector
);
3542 /* Given an argument location specification return the associated
3543 argument location number. */
3546 pa_build_arg_reloc (type_name
)
3550 if (strncasecmp (type_name
, "no", 2) == 0)
3552 if (strncasecmp (type_name
, "gr", 2) == 0)
3554 else if (strncasecmp (type_name
, "fr", 2) == 0)
3556 else if (strncasecmp (type_name
, "fu", 2) == 0)
3559 as_bad ("Invalid argument location: %s\n", type_name
);
3564 /* Encode and return an argument relocation specification for
3565 the given register in the location specified by arg_reloc. */
3568 pa_align_arg_reloc (reg
, arg_reloc
)
3570 unsigned int arg_reloc
;
3572 unsigned int new_reloc
;
3574 new_reloc
= arg_reloc
;
3590 as_bad ("Invalid argument description: %d", reg
);
3596 /* Parse a PA nullification completer (,n). Return nonzero if the
3597 completer was found; return zero if no completer was found. */
3609 if (strncasecmp (*s
, "n", 1) == 0)
3613 as_bad ("Invalid Nullification: (%c)", **s
);
3622 /* Parse a non-negated compare/subtract completer returning the
3623 number (for encoding in instrutions) of the given completer.
3625 ISBRANCH specifies whether or not this is parsing a condition
3626 completer for a branch (vs a nullification completer for a
3627 computational instruction. */
3630 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3635 char *name
= *s
+ 1;
3643 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3647 if (strcmp (name
, "=") == 0)
3651 else if (strcmp (name
, "<") == 0)
3655 else if (strcmp (name
, "<=") == 0)
3659 else if (strcmp (name
, "<<") == 0)
3663 else if (strcmp (name
, "<<=") == 0)
3667 else if (strcasecmp (name
, "sv") == 0)
3671 else if (strcasecmp (name
, "od") == 0)
3675 /* If we have something like addb,n then there is no condition
3677 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3688 /* Reset pointers if this was really a ,n for a branch instruction. */
3689 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3695 /* Parse a negated compare/subtract completer returning the
3696 number (for encoding in instrutions) of the given completer.
3698 ISBRANCH specifies whether or not this is parsing a condition
3699 completer for a branch (vs a nullification completer for a
3700 computational instruction. */
3703 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3708 char *name
= *s
+ 1;
3716 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3720 if (strcasecmp (name
, "tr") == 0)
3724 else if (strcmp (name
, "<>") == 0)
3728 else if (strcmp (name
, ">=") == 0)
3732 else if (strcmp (name
, ">") == 0)
3736 else if (strcmp (name
, ">>=") == 0)
3740 else if (strcmp (name
, ">>") == 0)
3744 else if (strcasecmp (name
, "nsv") == 0)
3748 else if (strcasecmp (name
, "ev") == 0)
3752 /* If we have something like addb,n then there is no condition
3754 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3765 /* Reset pointers if this was really a ,n for a branch instruction. */
3766 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3772 /* Parse a non-negated addition completer returning the number
3773 (for encoding in instrutions) of the given completer.
3775 ISBRANCH specifies whether or not this is parsing a condition
3776 completer for a branch (vs a nullification completer for a
3777 computational instruction. */
3780 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3785 char *name
= *s
+ 1;
3793 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3797 if (strcmp (name
, "=") == 0)
3801 else if (strcmp (name
, "<") == 0)
3805 else if (strcmp (name
, "<=") == 0)
3809 else if (strcasecmp (name
, "nuv") == 0)
3813 else if (strcasecmp (name
, "znv") == 0)
3817 else if (strcasecmp (name
, "sv") == 0)
3821 else if (strcasecmp (name
, "od") == 0)
3825 /* If we have something like addb,n then there is no condition
3827 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3838 /* Reset pointers if this was really a ,n for a branch instruction. */
3839 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3845 /* Parse a negated addition completer returning the number
3846 (for encoding in instrutions) of the given completer.
3848 ISBRANCH specifies whether or not this is parsing a condition
3849 completer for a branch (vs a nullification completer for a
3850 computational instruction. */
3853 pa_parse_neg_add_cmpltr (s
, isbranch
)
3858 char *name
= *s
+ 1;
3866 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3870 if (strcasecmp (name
, "tr") == 0)
3874 else if (strcmp (name
, "<>") == 0)
3878 else if (strcmp (name
, ">=") == 0)
3882 else if (strcmp (name
, ">") == 0)
3886 else if (strcasecmp (name
, "uv") == 0)
3890 else if (strcasecmp (name
, "vnz") == 0)
3894 else if (strcasecmp (name
, "nsv") == 0)
3898 else if (strcasecmp (name
, "ev") == 0)
3902 /* If we have something like addb,n then there is no condition
3904 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3915 /* Reset pointers if this was really a ,n for a branch instruction. */
3916 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3922 /* Handle a .BLOCK type pseudo-op. */
3930 unsigned int temp_size
;
3933 temp_size
= get_absolute_expression ();
3935 /* Always fill with zeros, that's what the HP assembler does. */
3938 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3939 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3940 bzero (p
, temp_size
);
3942 /* Convert 2 bytes at a time. */
3944 for (i
= 0; i
< temp_size
; i
+= 2)
3946 md_number_to_chars (p
+ i
,
3948 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3951 pa_undefine_label ();
3952 demand_empty_rest_of_line ();
3955 /* Handle a .CALL pseudo-op. This involves storing away information
3956 about where arguments are to be found so the linker can detect
3957 (and correct) argument location mismatches between caller and callee. */
3963 pa_call_args (&last_call_desc
);
3964 demand_empty_rest_of_line ();
3967 /* Do the dirty work of building a call descriptor which describes
3968 where the caller placed arguments to a function call. */
3971 pa_call_args (call_desc
)
3972 struct call_desc
*call_desc
;
3975 unsigned int temp
, arg_reloc
;
3977 while (!is_end_of_statement ())
3979 name
= input_line_pointer
;
3980 c
= get_symbol_end ();
3981 /* Process a source argument. */
3982 if ((strncasecmp (name
, "argw", 4) == 0))
3984 temp
= atoi (name
+ 4);
3985 p
= input_line_pointer
;
3987 input_line_pointer
++;
3988 name
= input_line_pointer
;
3989 c
= get_symbol_end ();
3990 arg_reloc
= pa_build_arg_reloc (name
);
3991 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
3993 /* Process a return value. */
3994 else if ((strncasecmp (name
, "rtnval", 6) == 0))
3996 p
= input_line_pointer
;
3998 input_line_pointer
++;
3999 name
= input_line_pointer
;
4000 c
= get_symbol_end ();
4001 arg_reloc
= pa_build_arg_reloc (name
);
4002 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4006 as_bad ("Invalid .CALL argument: %s", name
);
4008 p
= input_line_pointer
;
4010 if (!is_end_of_statement ())
4011 input_line_pointer
++;
4015 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4018 is_same_frag (frag1
, frag2
)
4025 else if (frag2
== NULL
)
4027 else if (frag1
== frag2
)
4029 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4030 return (is_same_frag (frag1
, frag2
->fr_next
));
4036 /* Build an entry in the UNWIND subspace from the given function
4037 attributes in CALL_INFO. This is not needed for SOM as using
4038 R_ENTRY and R_EXIT relocations allow the linker to handle building
4039 of the unwind spaces. */
4042 pa_build_unwind_subspace (call_info
)
4043 struct call_info
*call_info
;
4046 asection
*seg
, *save_seg
;
4047 subsegT subseg
, save_subseg
;
4051 /* Get into the right seg/subseg. This may involve creating
4052 the seg the first time through. Make sure to have the
4053 old seg/subseg so that we can reset things when we are done. */
4054 subseg
= SUBSEG_UNWIND
;
4055 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4056 if (seg
== ASEC_NULL
)
4058 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4059 bfd_set_section_flags (stdoutput
, seg
,
4060 SEC_READONLY
| SEC_HAS_CONTENTS
4061 | SEC_LOAD
| SEC_RELOC
);
4065 save_subseg
= now_subseg
;
4066 subseg_set (seg
, subseg
);
4069 /* Get some space to hold relocation information for the unwind
4073 /* Relocation info. for start offset of the function. */
4074 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4075 call_info
->start_symbol
, (offsetT
) 0,
4076 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0,
4081 /* Relocation info. for end offset of the function. */
4082 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4083 call_info
->end_symbol
, (offsetT
) 0,
4084 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0,
4088 unwind
= (char *) &call_info
->ci_unwind
;
4089 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4093 FRAG_APPEND_1_CHAR (c
);
4097 /* Return back to the original segment/subsegment. */
4098 subseg_set (save_seg
, save_subseg
);
4102 /* Process a .CALLINFO pseudo-op. This information is used later
4103 to build unwind descriptors and maybe one day to support
4104 .ENTER and .LEAVE. */
4107 pa_callinfo (unused
)
4113 /* .CALLINFO must appear within a procedure definition. */
4114 if (!within_procedure
)
4115 as_bad (".callinfo is not within a procedure definition");
4117 /* Mark the fact that we found the .CALLINFO for the
4118 current procedure. */
4119 callinfo_found
= TRUE
;
4121 /* Iterate over the .CALLINFO arguments. */
4122 while (!is_end_of_statement ())
4124 name
= input_line_pointer
;
4125 c
= get_symbol_end ();
4126 /* Frame size specification. */
4127 if ((strncasecmp (name
, "frame", 5) == 0))
4129 p
= input_line_pointer
;
4131 input_line_pointer
++;
4132 temp
= get_absolute_expression ();
4133 if ((temp
& 0x3) != 0)
4135 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4139 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4140 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4143 /* Entry register (GR, GR and SR) specifications. */
4144 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4146 p
= input_line_pointer
;
4148 input_line_pointer
++;
4149 temp
= get_absolute_expression ();
4150 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4151 even though %r19 is caller saved. I think this is a bug in
4152 the HP assembler, and we are not going to emulate it. */
4153 if (temp
< 3 || temp
> 18)
4154 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4155 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4157 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4159 p
= input_line_pointer
;
4161 input_line_pointer
++;
4162 temp
= get_absolute_expression ();
4163 /* Similarly the HP assembler takes 31 as the high bound even
4164 though %fr21 is the last callee saved floating point register. */
4165 if (temp
< 12 || temp
> 21)
4166 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4167 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4169 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4171 p
= input_line_pointer
;
4173 input_line_pointer
++;
4174 temp
= get_absolute_expression ();
4176 as_bad ("Value for ENTRY_SR must be 3\n");
4178 /* Note whether or not this function performs any calls. */
4179 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4180 (strncasecmp (name
, "caller", 6) == 0))
4182 p
= input_line_pointer
;
4185 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4187 p
= input_line_pointer
;
4190 /* Should RP be saved into the stack. */
4191 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4193 p
= input_line_pointer
;
4195 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4197 /* Likewise for SP. */
4198 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4200 p
= input_line_pointer
;
4202 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4204 /* Is this an unwindable procedure. If so mark it so
4205 in the unwind descriptor. */
4206 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4208 p
= input_line_pointer
;
4210 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4212 /* Is this an interrupt routine. If so mark it in the
4213 unwind descriptor. */
4214 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4216 p
= input_line_pointer
;
4218 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4220 /* Is this a millicode routine. "millicode" isn't in my
4221 assembler manual, but my copy is old. The HP assembler
4222 accepts it, and there's a place in the unwind descriptor
4223 to drop the information, so we'll accept it too. */
4224 else if ((strncasecmp (name
, "millicode", 9) == 0))
4226 p
= input_line_pointer
;
4228 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4232 as_bad ("Invalid .CALLINFO argument: %s", name
);
4233 *input_line_pointer
= c
;
4235 if (!is_end_of_statement ())
4236 input_line_pointer
++;
4239 demand_empty_rest_of_line ();
4242 /* Switch into the code subspace. */
4248 sd_chain_struct
*sdchain
;
4250 /* First time through it might be necessary to create the
4252 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4254 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4255 pa_def_spaces
[0].spnum
,
4256 pa_def_spaces
[0].loadable
,
4257 pa_def_spaces
[0].defined
,
4258 pa_def_spaces
[0].private,
4259 pa_def_spaces
[0].sort
,
4260 pa_def_spaces
[0].segment
, 0);
4263 SPACE_DEFINED (sdchain
) = 1;
4264 subseg_set (text_section
, SUBSEG_CODE
);
4265 demand_empty_rest_of_line ();
4268 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4269 the .comm pseudo-op has the following symtax:
4271 <label> .comm <length>
4273 where <label> is optional and is a symbol whose address will be the start of
4274 a block of memory <length> bytes long. <length> must be an absolute
4275 expression. <length> bytes will be allocated in the current space
4284 label_symbol_struct
*label_symbol
= pa_get_label ();
4287 symbol
= label_symbol
->lss_label
;
4292 size
= get_absolute_expression ();
4296 /* It is incorrect to check S_IS_DEFINED at this point as
4297 the symbol will *always* be defined. FIXME. How to
4298 correctly determine when this label really as been
4300 if (S_GET_VALUE (symbol
))
4302 if (S_GET_VALUE (symbol
) != size
)
4304 as_warn ("Length of .comm \"%s\" is already %ld. Not changed.",
4305 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4311 S_SET_VALUE (symbol
, size
);
4312 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4313 S_SET_EXTERNAL (symbol
);
4316 demand_empty_rest_of_line ();
4319 /* Process a .END pseudo-op. */
4325 demand_empty_rest_of_line ();
4328 /* Process a .ENTER pseudo-op. This is not supported. */
4336 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4342 if (!within_procedure
)
4343 as_bad ("Misplaced .entry. Ignored.");
4346 if (!callinfo_found
)
4347 as_bad ("Missing .callinfo.");
4349 demand_empty_rest_of_line ();
4350 within_entry_exit
= TRUE
;
4353 /* SOM defers building of unwind descriptors until the link phase.
4354 The assembler is responsible for creating an R_ENTRY relocation
4355 to mark the beginning of a region and hold the unwind bits, and
4356 for creating an R_EXIT relocation to mark the end of the region.
4358 FIXME. ELF should be using the same conventions! The problem
4359 is an unwind requires too much relocation space. Hmmm. Maybe
4360 if we split the unwind bits up between the relocations which
4361 denote the entry and exit points. */
4362 if (last_call_info
->start_symbol
!= NULL
)
4364 char *where
= frag_more (0);
4366 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4367 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4368 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4369 (char *) &last_call_info
->ci_unwind
.descriptor
);
4374 /* Handle a .EQU pseudo-op. */
4380 label_symbol_struct
*label_symbol
= pa_get_label ();
4385 symbol
= label_symbol
->lss_label
;
4387 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4389 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4390 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4395 as_bad (".REG must use a label");
4397 as_bad (".EQU must use a label");
4400 pa_undefine_label ();
4401 demand_empty_rest_of_line ();
4404 /* Helper function. Does processing for the end of a function. This
4405 usually involves creating some relocations or building special
4406 symbols to mark the end of the function. */
4413 where
= frag_more (0);
4416 /* Mark the end of the function, stuff away the location of the frag
4417 for the end of the function, and finally call pa_build_unwind_subspace
4418 to add an entry in the unwind table. */
4419 hppa_elf_mark_end_of_function ();
4420 pa_build_unwind_subspace (last_call_info
);
4422 /* SOM defers building of unwind descriptors until the link phase.
4423 The assembler is responsible for creating an R_ENTRY relocation
4424 to mark the beginning of a region and hold the unwind bits, and
4425 for creating an R_EXIT relocation to mark the end of the region.
4427 FIXME. ELF should be using the same conventions! The problem
4428 is an unwind requires too much relocation space. Hmmm. Maybe
4429 if we split the unwind bits up between the relocations which
4430 denote the entry and exit points. */
4431 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4432 last_call_info
->start_symbol
, (offsetT
) 0,
4433 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4437 /* Process a .EXIT pseudo-op. */
4443 if (!within_procedure
)
4444 as_bad (".EXIT must appear within a procedure");
4447 if (!callinfo_found
)
4448 as_bad ("Missing .callinfo");
4451 if (!within_entry_exit
)
4452 as_bad ("No .ENTRY for this .EXIT");
4455 within_entry_exit
= FALSE
;
4460 demand_empty_rest_of_line ();
4463 /* Process a .EXPORT directive. This makes functions external
4464 and provides information such as argument relocation entries
4474 name
= input_line_pointer
;
4475 c
= get_symbol_end ();
4476 /* Make sure the given symbol exists. */
4477 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4479 as_bad ("Cannot define export symbol: %s\n", name
);
4480 p
= input_line_pointer
;
4482 input_line_pointer
++;
4486 /* OK. Set the external bits and process argument relocations. */
4487 S_SET_EXTERNAL (symbol
);
4488 p
= input_line_pointer
;
4490 if (!is_end_of_statement ())
4492 input_line_pointer
++;
4493 pa_type_args (symbol
, 1);
4497 demand_empty_rest_of_line ();
4500 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4503 pa_type_args (symbolP
, is_export
)
4508 unsigned int temp
, arg_reloc
;
4509 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4510 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4512 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4515 input_line_pointer
+= 8;
4516 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4517 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4518 type
= SYMBOL_TYPE_ABSOLUTE
;
4520 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4522 input_line_pointer
+= 4;
4523 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4524 instead one should be IMPORTing/EXPORTing ENTRY types.
4526 Complain if one tries to EXPORT a CODE type since that's never
4527 done. Both GCC and HP C still try to IMPORT CODE types, so
4528 silently fix them to be ENTRY types. */
4529 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4532 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4534 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4535 type
= SYMBOL_TYPE_ENTRY
;
4539 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4540 type
= SYMBOL_TYPE_CODE
;
4543 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4545 input_line_pointer
+= 4;
4546 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4547 type
= SYMBOL_TYPE_DATA
;
4549 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4551 input_line_pointer
+= 5;
4552 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4553 type
= SYMBOL_TYPE_ENTRY
;
4555 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4557 input_line_pointer
+= 9;
4558 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4559 type
= SYMBOL_TYPE_MILLICODE
;
4561 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4563 input_line_pointer
+= 6;
4564 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4565 type
= SYMBOL_TYPE_PLABEL
;
4567 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4569 input_line_pointer
+= 8;
4570 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4571 type
= SYMBOL_TYPE_PRI_PROG
;
4573 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4575 input_line_pointer
+= 8;
4576 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4577 type
= SYMBOL_TYPE_SEC_PROG
;
4580 /* SOM requires much more information about symbol types
4581 than BFD understands. This is how we get this information
4582 to the SOM BFD backend. */
4583 #ifdef obj_set_symbol_type
4584 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4587 /* Now that the type of the exported symbol has been handled,
4588 handle any argument relocation information. */
4589 while (!is_end_of_statement ())
4591 if (*input_line_pointer
== ',')
4592 input_line_pointer
++;
4593 name
= input_line_pointer
;
4594 c
= get_symbol_end ();
4595 /* Argument sources. */
4596 if ((strncasecmp (name
, "argw", 4) == 0))
4598 p
= input_line_pointer
;
4600 input_line_pointer
++;
4601 temp
= atoi (name
+ 4);
4602 name
= input_line_pointer
;
4603 c
= get_symbol_end ();
4604 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4605 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4606 *input_line_pointer
= c
;
4608 /* The return value. */
4609 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4611 p
= input_line_pointer
;
4613 input_line_pointer
++;
4614 name
= input_line_pointer
;
4615 c
= get_symbol_end ();
4616 arg_reloc
= pa_build_arg_reloc (name
);
4617 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4618 *input_line_pointer
= c
;
4620 /* Privelege level. */
4621 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4623 p
= input_line_pointer
;
4625 input_line_pointer
++;
4626 temp
= atoi (input_line_pointer
);
4627 c
= get_symbol_end ();
4628 *input_line_pointer
= c
;
4632 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4633 p
= input_line_pointer
;
4636 if (!is_end_of_statement ())
4637 input_line_pointer
++;
4641 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4642 assembly file must either be defined in the assembly file, or
4643 explicitly IMPORTED from another. */
4652 name
= input_line_pointer
;
4653 c
= get_symbol_end ();
4655 symbol
= symbol_find (name
);
4656 /* Ugh. We might be importing a symbol defined earlier in the file,
4657 in which case all the code below will really screw things up
4658 (set the wrong segment, symbol flags & type, etc). */
4659 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4661 symbol
= symbol_find_or_make (name
);
4662 p
= input_line_pointer
;
4665 if (!is_end_of_statement ())
4667 input_line_pointer
++;
4668 pa_type_args (symbol
, 0);
4672 /* Sigh. To be compatable with the HP assembler and to help
4673 poorly written assembly code, we assign a type based on
4674 the the current segment. Note only BSF_FUNCTION really
4675 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4676 if (now_seg
== text_section
)
4677 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4679 /* If the section is undefined, then the symbol is undefined
4680 Since this is an import, leave the section undefined. */
4681 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4686 /* The symbol was already defined. Just eat everything up to
4687 the end of the current statement. */
4688 while (!is_end_of_statement ())
4689 input_line_pointer
++;
4692 demand_empty_rest_of_line ();
4695 /* Handle a .LABEL pseudo-op. */
4703 name
= input_line_pointer
;
4704 c
= get_symbol_end ();
4706 if (strlen (name
) > 0)
4709 p
= input_line_pointer
;
4714 as_warn ("Missing label name on .LABEL");
4717 if (!is_end_of_statement ())
4719 as_warn ("extra .LABEL arguments ignored.");
4720 ignore_rest_of_line ();
4722 demand_empty_rest_of_line ();
4725 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4734 /* Handle a .ORIGIN pseudo-op. */
4741 pa_undefine_label ();
4744 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4745 is for static functions. FIXME. Should share more code with .EXPORT. */
4754 name
= input_line_pointer
;
4755 c
= get_symbol_end ();
4757 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4759 as_bad ("Cannot define static symbol: %s\n", name
);
4760 p
= input_line_pointer
;
4762 input_line_pointer
++;
4766 S_CLEAR_EXTERNAL (symbol
);
4767 p
= input_line_pointer
;
4769 if (!is_end_of_statement ())
4771 input_line_pointer
++;
4772 pa_type_args (symbol
, 0);
4776 demand_empty_rest_of_line ();
4779 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4780 of a procedure from a syntatical point of view. */
4786 struct call_info
*call_info
;
4787 if (within_procedure
)
4788 as_fatal ("Nested procedures");
4790 /* Reset global variables for new procedure. */
4791 callinfo_found
= FALSE
;
4792 within_procedure
= TRUE
;
4795 Enabling
this code creates severe problems with GDB
. It appears as
if
4796 inserting linker stubs between functions within a single
.o makes GDB
4799 /* Create a new CODE subspace for each procedure if we are not
4800 using space/subspace aliases. */
4801 if (!USE_ALIASES
&& call_info_root
!= NULL
)
4805 /* Force creation of a new $CODE$ subspace; inherit attributes from
4806 the first $CODE$ subspace. */
4807 seg
= subseg_force_new ("$CODE$", 0);
4809 /* Now set the flags. */
4810 bfd_set_section_flags (stdoutput
, seg
,
4811 bfd_get_section_flags (abfd
, text_section
));
4813 /* Record any alignment request for this section. */
4814 record_alignment (seg
,
4815 bfd_get_section_alignment (stdoutput
, text_section
));
4817 /* Change the "text_section" to be our new $CODE$ subspace. */
4819 subseg_set (text_section
, 0);
4821 #ifdef obj_set_subsection_attributes
4822 /* Need a way to inherit the the access bits, sort key and quadrant
4823 from the first $CODE$ subspace. FIXME. */
4824 obj_set_subsection_attributes (seg
, current_space
->sd_seg
, 0x2c, 24, 0);
4829 /* Create another call_info structure. */
4830 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4833 as_fatal ("Cannot allocate unwind descriptor\n");
4835 bzero (call_info
, sizeof (struct call_info
));
4837 call_info
->ci_next
= NULL
;
4839 if (call_info_root
== NULL
)
4841 call_info_root
= call_info
;
4842 last_call_info
= call_info
;
4846 last_call_info
->ci_next
= call_info
;
4847 last_call_info
= call_info
;
4850 /* set up defaults on call_info structure */
4852 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4853 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4854 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4856 /* If we got a .PROC pseudo-op, we know that the function is defined
4857 locally. Make sure it gets into the symbol table. */
4859 label_symbol_struct
*label_symbol
= pa_get_label ();
4863 if (label_symbol
->lss_label
)
4865 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4866 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4870 /* The label was defined in a different segment. Fix that
4871 along with the value and associated fragment. */
4872 S_SET_SEGMENT (last_call_info
->start_symbol
, now_seg
);
4873 S_SET_VALUE (last_call_info
->start_symbol
,
4874 ((char*)obstack_next_free (&frags
)
4875 - frag_now
->fr_literal
));
4876 last_call_info
->start_symbol
->sy_frag
= frag_now
;
4881 as_bad ("Missing function name for .PROC (corrupted label chain)");
4884 last_call_info
->start_symbol
= NULL
;
4887 demand_empty_rest_of_line ();
4890 /* Process the syntatical end of a procedure. Make sure all the
4891 appropriate pseudo-ops were found within the procedure. */
4898 /* If we are within a procedure definition, make sure we've
4899 defined a label for the procedure; handle case where the
4900 label was defined after the .PROC directive.
4902 Note there's not need to diddle with the segment or fragment
4903 for the label symbol in this case. We have already switched
4904 into the new $CODE$ subspace at this point. */
4905 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4907 label_symbol_struct
*label_symbol
= pa_get_label ();
4911 if (label_symbol
->lss_label
)
4913 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4914 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4916 /* Also handle allocation of a fixup to hold the unwind
4917 information when the label appears after the proc/procend. */
4918 if (within_entry_exit
)
4920 char *where
= frag_more (0);
4922 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4923 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4924 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4925 (char *) &last_call_info
->ci_unwind
.descriptor
);
4930 as_bad ("Missing function name for .PROC (corrupted label chain)");
4933 as_bad ("Missing function name for .PROC");
4936 if (!within_procedure
)
4937 as_bad ("misplaced .procend");
4939 if (!callinfo_found
)
4940 as_bad ("Missing .callinfo for this procedure");
4942 if (within_entry_exit
)
4943 as_bad ("Missing .EXIT for a .ENTRY");
4946 /* ELF needs to mark the end of each function so that it can compute
4947 the size of the function (apparently its needed in the symbol table. */
4948 hppa_elf_mark_end_of_function ();
4951 within_procedure
= FALSE
;
4952 demand_empty_rest_of_line ();
4953 pa_undefine_label ();
4956 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4957 then create a new space entry to hold the information specified
4958 by the parameters to the .SPACE directive. */
4960 static sd_chain_struct
*
4961 pa_parse_space_stmt (space_name
, create_flag
)
4965 char *name
, *ptemp
, c
;
4966 char loadable
, defined
, private, sort
;
4968 asection
*seg
= NULL
;
4969 sd_chain_struct
*space
;
4971 /* load default values */
4977 if (strcmp (space_name
, "$TEXT$") == 0)
4979 seg
= pa_def_spaces
[0].segment
;
4980 defined
= pa_def_spaces
[0].defined
;
4981 private = pa_def_spaces
[0].private;
4982 sort
= pa_def_spaces
[0].sort
;
4983 spnum
= pa_def_spaces
[0].spnum
;
4985 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4987 seg
= pa_def_spaces
[1].segment
;
4988 defined
= pa_def_spaces
[1].defined
;
4989 private = pa_def_spaces
[1].private;
4990 sort
= pa_def_spaces
[1].sort
;
4991 spnum
= pa_def_spaces
[1].spnum
;
4994 if (!is_end_of_statement ())
4996 print_errors
= FALSE
;
4997 ptemp
= input_line_pointer
+ 1;
4998 /* First see if the space was specified as a number rather than
4999 as a name. According to the PA assembly manual the rest of
5000 the line should be ignored. */
5001 temp
= pa_parse_number (&ptemp
, 0);
5005 input_line_pointer
= ptemp
;
5009 while (!is_end_of_statement ())
5011 input_line_pointer
++;
5012 name
= input_line_pointer
;
5013 c
= get_symbol_end ();
5014 if ((strncasecmp (name
, "spnum", 5) == 0))
5016 *input_line_pointer
= c
;
5017 input_line_pointer
++;
5018 spnum
= get_absolute_expression ();
5020 else if ((strncasecmp (name
, "sort", 4) == 0))
5022 *input_line_pointer
= c
;
5023 input_line_pointer
++;
5024 sort
= get_absolute_expression ();
5026 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5028 *input_line_pointer
= c
;
5031 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5033 *input_line_pointer
= c
;
5036 else if ((strncasecmp (name
, "private", 7) == 0))
5038 *input_line_pointer
= c
;
5043 as_bad ("Invalid .SPACE argument");
5044 *input_line_pointer
= c
;
5045 if (!is_end_of_statement ())
5046 input_line_pointer
++;
5050 print_errors
= TRUE
;
5053 if (create_flag
&& seg
== NULL
)
5054 seg
= subseg_new (space_name
, 0);
5056 /* If create_flag is nonzero, then create the new space with
5057 the attributes computed above. Else set the values in
5058 an already existing space -- this can only happen for
5059 the first occurence of a built-in space. */
5061 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5062 private, sort
, seg
, 1);
5065 space
= is_defined_space (space_name
);
5066 SPACE_SPNUM (space
) = spnum
;
5067 SPACE_DEFINED (space
) = defined
& 1;
5068 SPACE_USER_DEFINED (space
) = 1;
5071 #ifdef obj_set_section_attributes
5072 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5078 /* Handle a .SPACE pseudo-op; this switches the current space to the
5079 given space, creating the new space if necessary. */
5085 char *name
, c
, *space_name
, *save_s
;
5087 sd_chain_struct
*sd_chain
;
5089 if (within_procedure
)
5091 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5092 ignore_rest_of_line ();
5096 /* Check for some of the predefined spaces. FIXME: most of the code
5097 below is repeated several times, can we extract the common parts
5098 and place them into a subroutine or something similar? */
5099 /* FIXME Is this (and the next IF stmt) really right?
5100 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5101 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5103 input_line_pointer
+= 6;
5104 sd_chain
= is_defined_space ("$TEXT$");
5105 if (sd_chain
== NULL
)
5106 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5107 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5108 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5110 current_space
= sd_chain
;
5111 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5113 = pa_subsegment_to_subspace (text_section
,
5114 sd_chain
->sd_last_subseg
);
5115 demand_empty_rest_of_line ();
5118 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5120 input_line_pointer
+= 9;
5121 sd_chain
= is_defined_space ("$PRIVATE$");
5122 if (sd_chain
== NULL
)
5123 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5124 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5125 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5127 current_space
= sd_chain
;
5128 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5130 = pa_subsegment_to_subspace (data_section
,
5131 sd_chain
->sd_last_subseg
);
5132 demand_empty_rest_of_line ();
5135 if (!strncasecmp (input_line_pointer
,
5136 GDB_DEBUG_SPACE_NAME
,
5137 strlen (GDB_DEBUG_SPACE_NAME
)))
5139 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5140 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5141 if (sd_chain
== NULL
)
5142 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5143 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5144 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5146 current_space
= sd_chain
;
5149 asection
*gdb_section
5150 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5152 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5154 = pa_subsegment_to_subspace (gdb_section
,
5155 sd_chain
->sd_last_subseg
);
5157 demand_empty_rest_of_line ();
5161 /* It could be a space specified by number. */
5163 save_s
= input_line_pointer
;
5164 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5166 if ((sd_chain
= pa_find_space_by_number (temp
)))
5168 current_space
= sd_chain
;
5170 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5172 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5173 sd_chain
->sd_last_subseg
);
5174 demand_empty_rest_of_line ();
5179 /* Not a number, attempt to create a new space. */
5181 input_line_pointer
= save_s
;
5182 name
= input_line_pointer
;
5183 c
= get_symbol_end ();
5184 space_name
= xmalloc (strlen (name
) + 1);
5185 strcpy (space_name
, name
);
5186 *input_line_pointer
= c
;
5188 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5189 current_space
= sd_chain
;
5191 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5192 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5193 sd_chain
->sd_last_subseg
);
5194 demand_empty_rest_of_line ();
5198 /* Switch to a new space. (I think). FIXME. */
5207 sd_chain_struct
*space
;
5209 name
= input_line_pointer
;
5210 c
= get_symbol_end ();
5211 space
= is_defined_space (name
);
5215 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5218 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5220 *input_line_pointer
= c
;
5221 demand_empty_rest_of_line ();
5224 /* If VALUE is an exact power of two between zero and 2^31, then
5225 return log2 (VALUE). Else return -1. */
5233 while ((1 << shift
) != value
&& shift
< 32)
5242 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5243 given subspace, creating the new subspace if necessary.
5245 FIXME. Should mirror pa_space more closely, in particular how
5246 they're broken up into subroutines. */
5249 pa_subspace (unused
)
5252 char *name
, *ss_name
, *alias
, c
;
5253 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5254 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5255 sd_chain_struct
*space
;
5256 ssd_chain_struct
*ssd
;
5259 if (within_procedure
)
5261 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5262 ignore_rest_of_line ();
5266 name
= input_line_pointer
;
5267 c
= get_symbol_end ();
5268 ss_name
= xmalloc (strlen (name
) + 1);
5269 strcpy (ss_name
, name
);
5270 *input_line_pointer
= c
;
5272 /* Load default values. */
5285 space
= current_space
;
5286 ssd
= is_defined_subspace (ss_name
);
5287 /* Allow user to override the builtin attributes of subspaces. But
5288 only allow the attributes to be changed once! */
5289 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5291 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5292 if (!is_end_of_statement ())
5293 as_warn ("Parameters of an existing subspace can\'t be modified");
5294 demand_empty_rest_of_line ();
5299 /* A new subspace. Load default values if it matches one of
5300 the builtin subspaces. */
5302 while (pa_def_subspaces
[i
].name
)
5304 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5306 loadable
= pa_def_subspaces
[i
].loadable
;
5307 common
= pa_def_subspaces
[i
].common
;
5308 dup_common
= pa_def_subspaces
[i
].dup_common
;
5309 code_only
= pa_def_subspaces
[i
].code_only
;
5310 zero
= pa_def_subspaces
[i
].zero
;
5311 space_index
= pa_def_subspaces
[i
].space_index
;
5312 alignment
= pa_def_subspaces
[i
].alignment
;
5313 quadrant
= pa_def_subspaces
[i
].quadrant
;
5314 access
= pa_def_subspaces
[i
].access
;
5315 sort
= pa_def_subspaces
[i
].sort
;
5316 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5317 alias
= pa_def_subspaces
[i
].alias
;
5324 /* We should be working with a new subspace now. Fill in
5325 any information as specified by the user. */
5326 if (!is_end_of_statement ())
5328 input_line_pointer
++;
5329 while (!is_end_of_statement ())
5331 name
= input_line_pointer
;
5332 c
= get_symbol_end ();
5333 if ((strncasecmp (name
, "quad", 4) == 0))
5335 *input_line_pointer
= c
;
5336 input_line_pointer
++;
5337 quadrant
= get_absolute_expression ();
5339 else if ((strncasecmp (name
, "align", 5) == 0))
5341 *input_line_pointer
= c
;
5342 input_line_pointer
++;
5343 alignment
= get_absolute_expression ();
5344 if (log2 (alignment
) == -1)
5346 as_bad ("Alignment must be a power of 2");
5350 else if ((strncasecmp (name
, "access", 6) == 0))
5352 *input_line_pointer
= c
;
5353 input_line_pointer
++;
5354 access
= get_absolute_expression ();
5356 else if ((strncasecmp (name
, "sort", 4) == 0))
5358 *input_line_pointer
= c
;
5359 input_line_pointer
++;
5360 sort
= get_absolute_expression ();
5362 else if ((strncasecmp (name
, "code_only", 9) == 0))
5364 *input_line_pointer
= c
;
5367 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5369 *input_line_pointer
= c
;
5372 else if ((strncasecmp (name
, "common", 6) == 0))
5374 *input_line_pointer
= c
;
5377 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5379 *input_line_pointer
= c
;
5382 else if ((strncasecmp (name
, "zero", 4) == 0))
5384 *input_line_pointer
= c
;
5387 else if ((strncasecmp (name
, "first", 5) == 0))
5388 as_bad ("FIRST not supported as a .SUBSPACE argument");
5390 as_bad ("Invalid .SUBSPACE argument");
5391 if (!is_end_of_statement ())
5392 input_line_pointer
++;
5396 /* Compute a reasonable set of BFD flags based on the information
5397 in the .subspace directive. */
5398 applicable
= bfd_applicable_section_flags (stdoutput
);
5401 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5404 if (common
|| dup_common
)
5405 flags
|= SEC_IS_COMMON
;
5407 /* This is a zero-filled subspace (eg BSS). */
5411 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5412 applicable
&= flags
;
5414 /* If this is an existing subspace, then we want to use the
5415 segment already associated with the subspace.
5417 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5418 lots of sections. It might be a problem in the PA ELF
5419 code, I do not know yet. For now avoid creating anything
5420 but the "standard" sections for ELF. */
5422 section
= ssd
->ssd_seg
;
5424 section
= subseg_new (alias
, 0);
5425 else if (!alias
&& USE_ALIASES
)
5427 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5428 demand_empty_rest_of_line ();
5432 section
= subseg_new (ss_name
, 0);
5434 /* Now set the flags. */
5435 bfd_set_section_flags (stdoutput
, section
, applicable
);
5437 /* Record any alignment request for this section. */
5438 record_alignment (section
, log2 (alignment
));
5440 /* Set the starting offset for this section. */
5441 bfd_set_section_vma (stdoutput
, section
,
5442 pa_subspace_start (space
, quadrant
));
5444 /* Now that all the flags are set, update an existing subspace,
5445 or create a new one. */
5448 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5449 code_only
, common
, dup_common
,
5450 sort
, zero
, access
, space_index
,
5451 alignment
, quadrant
,
5454 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5456 dup_common
, zero
, sort
,
5457 access
, space_index
,
5458 alignment
, quadrant
, section
);
5460 demand_empty_rest_of_line ();
5461 current_subspace
->ssd_seg
= section
;
5462 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5464 SUBSPACE_DEFINED (current_subspace
) = 1;
5468 /* Create default space and subspace dictionaries. */
5475 space_dict_root
= NULL
;
5476 space_dict_last
= NULL
;
5479 while (pa_def_spaces
[i
].name
)
5483 /* Pick the right name to use for the new section. */
5484 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5485 name
= pa_def_spaces
[i
].alias
;
5487 name
= pa_def_spaces
[i
].name
;
5489 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5490 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5491 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5492 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5493 pa_def_spaces
[i
].segment
, 0);
5498 while (pa_def_subspaces
[i
].name
)
5501 int applicable
, subsegment
;
5502 asection
*segment
= NULL
;
5503 sd_chain_struct
*space
;
5505 /* Pick the right name for the new section and pick the right
5506 subsegment number. */
5507 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5509 name
= pa_def_subspaces
[i
].alias
;
5510 subsegment
= pa_def_subspaces
[i
].subsegment
;
5514 name
= pa_def_subspaces
[i
].name
;
5518 /* Create the new section. */
5519 segment
= subseg_new (name
, subsegment
);
5522 /* For SOM we want to replace the standard .text, .data, and .bss
5523 sections with our own. We also want to set BFD flags for
5524 all the built-in subspaces. */
5525 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5527 text_section
= segment
;
5528 applicable
= bfd_applicable_section_flags (stdoutput
);
5529 bfd_set_section_flags (stdoutput
, segment
,
5530 applicable
& (SEC_ALLOC
| SEC_LOAD
5531 | SEC_RELOC
| SEC_CODE
5533 | SEC_HAS_CONTENTS
));
5535 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5537 data_section
= segment
;
5538 applicable
= bfd_applicable_section_flags (stdoutput
);
5539 bfd_set_section_flags (stdoutput
, segment
,
5540 applicable
& (SEC_ALLOC
| SEC_LOAD
5542 | SEC_HAS_CONTENTS
));
5546 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5548 bss_section
= segment
;
5549 applicable
= bfd_applicable_section_flags (stdoutput
);
5550 bfd_set_section_flags (stdoutput
, segment
,
5551 applicable
& SEC_ALLOC
);
5553 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5555 applicable
= bfd_applicable_section_flags (stdoutput
);
5556 bfd_set_section_flags (stdoutput
, segment
,
5557 applicable
& (SEC_ALLOC
| SEC_LOAD
5560 | SEC_HAS_CONTENTS
));
5562 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5564 applicable
= bfd_applicable_section_flags (stdoutput
);
5565 bfd_set_section_flags (stdoutput
, segment
,
5566 applicable
& (SEC_ALLOC
| SEC_LOAD
5569 | SEC_HAS_CONTENTS
));
5572 /* Find the space associated with this subspace. */
5573 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5574 def_space_index
].segment
);
5577 as_fatal ("Internal error: Unable to find containing space for %s.",
5578 pa_def_subspaces
[i
].name
);
5581 create_new_subspace (space
, name
,
5582 pa_def_subspaces
[i
].loadable
,
5583 pa_def_subspaces
[i
].code_only
,
5584 pa_def_subspaces
[i
].common
,
5585 pa_def_subspaces
[i
].dup_common
,
5586 pa_def_subspaces
[i
].zero
,
5587 pa_def_subspaces
[i
].sort
,
5588 pa_def_subspaces
[i
].access
,
5589 pa_def_subspaces
[i
].space_index
,
5590 pa_def_subspaces
[i
].alignment
,
5591 pa_def_subspaces
[i
].quadrant
,
5599 /* Create a new space NAME, with the appropriate flags as defined
5600 by the given parameters. */
5602 static sd_chain_struct
*
5603 create_new_space (name
, spnum
, loadable
, defined
, private,
5604 sort
, seg
, user_defined
)
5614 sd_chain_struct
*chain_entry
;
5616 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5618 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5621 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5622 strcpy (SPACE_NAME (chain_entry
), name
);
5623 SPACE_DEFINED (chain_entry
) = defined
;
5624 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5625 SPACE_SPNUM (chain_entry
) = spnum
;
5627 chain_entry
->sd_seg
= seg
;
5628 chain_entry
->sd_last_subseg
= -1;
5629 chain_entry
->sd_next
= NULL
;
5631 /* Find spot for the new space based on its sort key. */
5632 if (!space_dict_last
)
5633 space_dict_last
= chain_entry
;
5635 if (space_dict_root
== NULL
)
5636 space_dict_root
= chain_entry
;
5639 sd_chain_struct
*chain_pointer
;
5640 sd_chain_struct
*prev_chain_pointer
;
5642 chain_pointer
= space_dict_root
;
5643 prev_chain_pointer
= NULL
;
5645 while (chain_pointer
)
5647 prev_chain_pointer
= chain_pointer
;
5648 chain_pointer
= chain_pointer
->sd_next
;
5651 /* At this point we've found the correct place to add the new
5652 entry. So add it and update the linked lists as appropriate. */
5653 if (prev_chain_pointer
)
5655 chain_entry
->sd_next
= chain_pointer
;
5656 prev_chain_pointer
->sd_next
= chain_entry
;
5660 space_dict_root
= chain_entry
;
5661 chain_entry
->sd_next
= chain_pointer
;
5664 if (chain_entry
->sd_next
== NULL
)
5665 space_dict_last
= chain_entry
;
5668 /* This is here to catch predefined spaces which do not get
5669 modified by the user's input. Another call is found at
5670 the bottom of pa_parse_space_stmt to handle cases where
5671 the user modifies a predefined space. */
5672 #ifdef obj_set_section_attributes
5673 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5679 /* Create a new subspace NAME, with the appropriate flags as defined
5680 by the given parameters.
5682 Add the new subspace to the subspace dictionary chain in numerical
5683 order as defined by the SORT entries. */
5685 static ssd_chain_struct
*
5686 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5687 dup_common
, is_zero
, sort
, access
, space_index
,
5688 alignment
, quadrant
, seg
)
5689 sd_chain_struct
*space
;
5691 int loadable
, code_only
, common
, dup_common
, is_zero
;
5699 ssd_chain_struct
*chain_entry
;
5701 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5703 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5705 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5706 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5708 /* Initialize subspace_defined. When we hit a .subspace directive
5709 we'll set it to 1 which "locks-in" the subspace attributes. */
5710 SUBSPACE_DEFINED (chain_entry
) = 0;
5712 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5713 chain_entry
->ssd_seg
= seg
;
5714 chain_entry
->ssd_next
= NULL
;
5716 /* Find spot for the new subspace based on its sort key. */
5717 if (space
->sd_subspaces
== NULL
)
5718 space
->sd_subspaces
= chain_entry
;
5721 ssd_chain_struct
*chain_pointer
;
5722 ssd_chain_struct
*prev_chain_pointer
;
5724 chain_pointer
= space
->sd_subspaces
;
5725 prev_chain_pointer
= NULL
;
5727 while (chain_pointer
)
5729 prev_chain_pointer
= chain_pointer
;
5730 chain_pointer
= chain_pointer
->ssd_next
;
5733 /* Now we have somewhere to put the new entry. Insert it and update
5735 if (prev_chain_pointer
)
5737 chain_entry
->ssd_next
= chain_pointer
;
5738 prev_chain_pointer
->ssd_next
= chain_entry
;
5742 space
->sd_subspaces
= chain_entry
;
5743 chain_entry
->ssd_next
= chain_pointer
;
5747 #ifdef obj_set_subsection_attributes
5748 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5755 /* Update the information for the given subspace based upon the
5756 various arguments. Return the modified subspace chain entry. */
5758 static ssd_chain_struct
*
5759 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5760 zero
, access
, space_index
, alignment
, quadrant
, section
)
5761 sd_chain_struct
*space
;
5775 ssd_chain_struct
*chain_entry
;
5777 chain_entry
= is_defined_subspace (name
);
5779 #ifdef obj_set_subsection_attributes
5780 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5787 /* Return the space chain entry for the space with the name NAME or
5788 NULL if no such space exists. */
5790 static sd_chain_struct
*
5791 is_defined_space (name
)
5794 sd_chain_struct
*chain_pointer
;
5796 for (chain_pointer
= space_dict_root
;
5798 chain_pointer
= chain_pointer
->sd_next
)
5800 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5801 return chain_pointer
;
5804 /* No mapping from segment to space was found. Return NULL. */
5808 /* Find and return the space associated with the given seg. If no mapping
5809 from the given seg to a space is found, then return NULL.
5811 Unlike subspaces, the number of spaces is not expected to grow much,
5812 so a linear exhaustive search is OK here. */
5814 static sd_chain_struct
*
5815 pa_segment_to_space (seg
)
5818 sd_chain_struct
*space_chain
;
5820 /* Walk through each space looking for the correct mapping. */
5821 for (space_chain
= space_dict_root
;
5823 space_chain
= space_chain
->sd_next
)
5825 if (space_chain
->sd_seg
== seg
)
5829 /* Mapping was not found. Return NULL. */
5833 /* Return the space chain entry for the subspace with the name NAME or
5834 NULL if no such subspace exists.
5836 Uses a linear search through all the spaces and subspaces, this may
5837 not be appropriate if we ever being placing each function in its
5840 static ssd_chain_struct
*
5841 is_defined_subspace (name
)
5844 sd_chain_struct
*space_chain
;
5845 ssd_chain_struct
*subspace_chain
;
5847 /* Walk through each space. */
5848 for (space_chain
= space_dict_root
;
5850 space_chain
= space_chain
->sd_next
)
5852 /* Walk through each subspace looking for a name which matches. */
5853 for (subspace_chain
= space_chain
->sd_subspaces
;
5855 subspace_chain
= subspace_chain
->ssd_next
)
5856 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5857 return subspace_chain
;
5860 /* Subspace wasn't found. Return NULL. */
5864 /* Find and return the subspace associated with the given seg. If no
5865 mapping from the given seg to a subspace is found, then return NULL.
5867 If we ever put each procedure/function within its own subspace
5868 (to make life easier on the compiler and linker), then this will have
5869 to become more efficient. */
5871 static ssd_chain_struct
*
5872 pa_subsegment_to_subspace (seg
, subseg
)
5876 sd_chain_struct
*space_chain
;
5877 ssd_chain_struct
*subspace_chain
;
5879 /* Walk through each space. */
5880 for (space_chain
= space_dict_root
;
5882 space_chain
= space_chain
->sd_next
)
5884 if (space_chain
->sd_seg
== seg
)
5886 /* Walk through each subspace within each space looking for
5887 the correct mapping. */
5888 for (subspace_chain
= space_chain
->sd_subspaces
;
5890 subspace_chain
= subspace_chain
->ssd_next
)
5891 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5892 return subspace_chain
;
5896 /* No mapping from subsegment to subspace found. Return NULL. */
5900 /* Given a number, try and find a space with the name number.
5902 Return a pointer to a space dictionary chain entry for the space
5903 that was found or NULL on failure. */
5905 static sd_chain_struct
*
5906 pa_find_space_by_number (number
)
5909 sd_chain_struct
*space_chain
;
5911 for (space_chain
= space_dict_root
;
5913 space_chain
= space_chain
->sd_next
)
5915 if (SPACE_SPNUM (space_chain
) == number
)
5919 /* No appropriate space found. Return NULL. */
5923 /* Return the starting address for the given subspace. If the starting
5924 address is unknown then return zero. */
5927 pa_subspace_start (space
, quadrant
)
5928 sd_chain_struct
*space
;
5931 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5932 is not correct for the PA OSF1 port. */
5933 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5935 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5941 /* FIXME. Needs documentation. */
5943 pa_next_subseg (space
)
5944 sd_chain_struct
*space
;
5947 space
->sd_last_subseg
++;
5948 return space
->sd_last_subseg
;
5951 /* Helper function for pa_stringer. Used to find the end of
5958 unsigned int c
= *s
& CHAR_MASK
;
5970 /* Handle a .STRING type pseudo-op. */
5973 pa_stringer (append_zero
)
5976 char *s
, num_buf
[4];
5980 /* Preprocess the string to handle PA-specific escape sequences.
5981 For example, \xDD where DD is a hexidecimal number should be
5982 changed to \OOO where OOO is an octal number. */
5984 /* Skip the opening quote. */
5985 s
= input_line_pointer
+ 1;
5987 while (is_a_char (c
= pa_stringer_aux (s
++)))
5994 /* Handle \x<num>. */
5997 unsigned int number
;
6002 /* Get pas the 'x'. */
6004 for (num_digit
= 0, number
= 0, dg
= *s
;
6006 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6007 || (dg
>= 'A' && dg
<= 'F'));
6011 number
= number
* 16 + dg
- '0';
6012 else if (dg
>= 'a' && dg
<= 'f')
6013 number
= number
* 16 + dg
- 'a' + 10;
6015 number
= number
* 16 + dg
- 'A' + 10;
6025 sprintf (num_buf
, "%02o", number
);
6028 sprintf (num_buf
, "%03o", number
);
6031 for (i
= 0; i
<= num_digit
; i
++)
6032 s_start
[i
] = num_buf
[i
];
6036 /* This might be a "\"", skip over the escaped char. */
6043 stringer (append_zero
);
6044 pa_undefine_label ();
6047 /* Handle a .VERSION pseudo-op. */
6054 pa_undefine_label ();
6057 /* Handle a .COPYRIGHT pseudo-op. */
6060 pa_copyright (unused
)
6064 pa_undefine_label ();
6067 /* Just like a normal cons, but when finished we have to undefine
6068 the latest space label. */
6075 pa_undefine_label ();
6078 /* Switch to the data space. As usual delete our label. */
6085 pa_undefine_label ();
6088 /* Like float_cons, but we need to undefine our label. */
6091 pa_float_cons (float_type
)
6094 float_cons (float_type
);
6095 pa_undefine_label ();
6098 /* Like s_fill, but delete our label when finished. */
6105 pa_undefine_label ();
6108 /* Like lcomm, but delete our label when finished. */
6111 pa_lcomm (needs_align
)
6114 s_lcomm (needs_align
);
6115 pa_undefine_label ();
6118 /* Like lsym, but delete our label when finished. */
6125 pa_undefine_label ();
6128 /* Switch to the text space. Like s_text, but delete our
6129 label when finished. */
6135 pa_undefine_label ();
6138 /* On the PA relocations which involve function symbols must not be
6139 adjusted. This so that the linker can know when/how to create argument
6140 relocation stubs for indirect calls and calls to static functions.
6142 FIXME. Also reject R_HPPA relocations which are 32 bits
6143 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6144 needs to generate relocations to push the addend and symbol value
6145 onto the stack, add them, then pop the value off the stack and
6146 use it in a relocation -- yuk. */
6149 hppa_fix_adjustable (fixp
)
6152 struct hppa_fix_struct
*hppa_fix
;
6154 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6156 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6159 if (fixp
->fx_addsy
== 0
6160 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6166 /* Return nonzero if the fixup in FIXP will require a relocation,
6167 even it if appears that the fixup could be completely handled
6171 hppa_force_relocation (fixp
)
6174 struct hppa_fix_struct
*hppa_fixp
;
6176 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6178 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6182 #define stub_needed(CALLER, CALLEE) \
6183 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6185 /* It is necessary to force PC-relative calls/jumps to have a relocation
6186 entry if they're going to need either a argument relocation or long
6187 call stub. FIXME. Can't we need the same for absolute calls? */
6188 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6189 && (stub_needed (((obj_symbol_type
*)
6190 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6191 hppa_fixp
->fx_arg_reloc
)))
6196 /* No need (yet) to force another relocations to be emitted. */
6200 /* Now for some ELF specific code. FIXME. */
6202 /* Mark the end of a function so that it's possible to compute
6203 the size of the function in hppa_elf_final_processing. */
6206 hppa_elf_mark_end_of_function ()
6208 /* ELF does not have EXIT relocations. All we do is create a
6209 temporary symbol marking the end of the function. */
6210 char *name
= (char *)
6211 xmalloc (strlen ("L$\001end_") +
6212 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6218 strcpy (name
, "L$\001end_");
6219 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6221 /* If we have a .exit followed by a .procend, then the
6222 symbol will have already been defined. */
6223 symbolP
= symbol_find (name
);
6226 /* The symbol has already been defined! This can
6227 happen if we have a .exit followed by a .procend.
6229 This is *not* an error. All we want to do is free
6230 the memory we just allocated for the name and continue. */
6235 /* symbol value should be the offset of the
6236 last instruction of the function */
6237 symbolP
= symbol_new (name
, now_seg
,
6238 (valueT
) (obstack_next_free (&frags
)
6239 - frag_now
->fr_literal
- 4),
6243 symbolP
->bsym
->flags
= BSF_LOCAL
;
6244 symbol_table_insert (symbolP
);
6248 last_call_info
->end_symbol
= symbolP
;
6250 as_bad ("Symbol '%s' could not be created.", name
);
6254 as_bad ("No memory for symbol name.");
6258 /* For ELF, this function serves one purpose: to setup the st_size
6259 field of STT_FUNC symbols. To do this, we need to scan the
6260 call_info structure list, determining st_size in by taking the
6261 difference in the address of the beginning/end marker symbols. */
6264 elf_hppa_final_processing ()
6266 struct call_info
*call_info_pointer
;
6268 for (call_info_pointer
= call_info_root
;
6270 call_info_pointer
= call_info_pointer
->ci_next
)
6272 elf_symbol_type
*esym
6273 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6274 esym
->internal_elf_sym
.st_size
=
6275 S_GET_VALUE (call_info_pointer
->end_symbol
)
6276 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;