1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "../bfd/libhppa.h"
31 #include "../bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".hppa_unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
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, ".hppa_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 #define is_complex(exp) \
1096 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1098 /* Actual functions to implement the PA specific code for the assembler. */
1100 /* Returns a pointer to the label_symbol_struct for the current space.
1101 or NULL if no label_symbol_struct exists for the current space. */
1103 static label_symbol_struct
*
1106 label_symbol_struct
*label_chain
;
1107 sd_chain_struct
*space_chain
= current_space
;
1109 for (label_chain
= label_symbols_rootp
;
1111 label_chain
= label_chain
->lss_next
)
1112 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1118 /* Defines a label for the current space. If one is already defined,
1119 this function will replace it with the new label. */
1122 pa_define_label (symbol
)
1125 label_symbol_struct
*label_chain
= pa_get_label ();
1126 sd_chain_struct
*space_chain
= current_space
;
1129 label_chain
->lss_label
= symbol
;
1132 /* Create a new label entry and add it to the head of the chain. */
1134 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1135 label_chain
->lss_label
= symbol
;
1136 label_chain
->lss_space
= space_chain
;
1137 label_chain
->lss_next
= NULL
;
1139 if (label_symbols_rootp
)
1140 label_chain
->lss_next
= label_symbols_rootp
;
1142 label_symbols_rootp
= label_chain
;
1146 /* Removes a label definition for the current space.
1147 If there is no label_symbol_struct entry, then no action is taken. */
1150 pa_undefine_label ()
1152 label_symbol_struct
*label_chain
;
1153 label_symbol_struct
*prev_label_chain
= NULL
;
1154 sd_chain_struct
*space_chain
= current_space
;
1156 for (label_chain
= label_symbols_rootp
;
1158 label_chain
= label_chain
->lss_next
)
1160 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1162 /* Remove the label from the chain and free its memory. */
1163 if (prev_label_chain
)
1164 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1166 label_symbols_rootp
= label_chain
->lss_next
;
1171 prev_label_chain
= label_chain
;
1176 /* An HPPA-specific version of fix_new. This is required because the HPPA
1177 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1178 results in the creation of an instance of an hppa_fix_struct. An
1179 hppa_fix_struct stores the extra information along with a pointer to the
1180 original fixS. This is attached to the original fixup via the
1181 tc_fix_data field. */
1184 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1185 r_type
, r_field
, r_format
, arg_reloc
, unwind_desc
)
1189 symbolS
*add_symbol
;
1193 bfd_reloc_code_real_type r_type
;
1194 enum hppa_reloc_field_selector_type r_field
;
1201 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1202 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1205 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1207 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1208 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1209 hppa_fix
->fx_r_type
= r_type
;
1210 hppa_fix
->fx_r_field
= r_field
;
1211 hppa_fix
->fx_r_format
= r_format
;
1212 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1213 hppa_fix
->segment
= now_seg
;
1216 bcopy (unwind_desc
, hppa_fix
->fx_unwind
, 8);
1218 /* If necessary call BFD backend function to attach the
1219 unwind bits to the target dependent parts of a BFD symbol.
1221 #ifdef obj_attach_unwind_info
1222 obj_attach_unwind_info (add_symbol
->bsym
, unwind_desc
);
1226 /* foo-$global$ is used to access non-automatic storage. $global$
1227 is really just a marker and has served its purpose, so eliminate
1228 it now so as not to confuse write.c. */
1229 if (new_fix
->fx_subsy
1230 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1231 new_fix
->fx_subsy
= NULL
;
1234 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1235 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1238 parse_cons_expression_hppa (exp
)
1241 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1245 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1246 hppa_field_selector is set by the parse_cons_expression_hppa. */
1249 cons_fix_new_hppa (frag
, where
, size
, exp
)
1255 unsigned int rel_type
;
1257 if (is_DP_relative (*exp
))
1258 rel_type
= R_HPPA_GOTOFF
;
1259 else if (is_complex (*exp
))
1260 rel_type
= R_HPPA_COMPLEX
;
1264 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1265 as_warn ("Invalid field selector. Assuming F%%.");
1267 fix_new_hppa (frag
, where
, size
,
1268 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1269 hppa_field_selector
, 32, 0, (char *) 0);
1271 /* Reset field selector to its default state. */
1272 hppa_field_selector
= 0;
1275 /* This function is called once, at assembler startup time. It should
1276 set up all the tables, etc. that the MD part of the assembler will need. */
1281 const char *retval
= NULL
;
1285 last_call_info
= NULL
;
1286 call_info_root
= NULL
;
1288 /* Folding of text and data segments fails miserably on the PA.
1289 Warn user and disable "-R" option. */
1292 as_warn ("-R option not supported on this target.");
1293 flag_readonly_data_in_text
= 0;
1299 op_hash
= hash_new ();
1301 while (i
< NUMOPCODES
)
1303 const char *name
= pa_opcodes
[i
].name
;
1304 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1305 if (retval
!= NULL
&& *retval
!= '\0')
1307 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1312 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1313 != pa_opcodes
[i
].match
)
1315 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1316 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1321 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1325 as_fatal ("Broken assembler. No assembly attempted.");
1327 /* SOM will change text_section. To make sure we never put
1328 anything into the old one switch to the new one now. */
1329 subseg_set (text_section
, 0);
1331 dummy_symbol
= symbol_find_or_make ("L$dummy");
1332 S_SET_SEGMENT (dummy_symbol
, text_section
);
1335 /* Assemble a single instruction storing it into a frag. */
1342 /* The had better be something to assemble. */
1345 /* If we are within a procedure definition, make sure we've
1346 defined a label for the procedure; handle case where the
1347 label was defined after the .PROC directive.
1349 Note there's not need to diddle with the segment or fragment
1350 for the label symbol in this case. We have already switched
1351 into the new $CODE$ subspace at this point. */
1352 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1354 label_symbol_struct
*label_symbol
= pa_get_label ();
1358 if (label_symbol
->lss_label
)
1360 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1361 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1363 /* Also handle allocation of a fixup to hold the unwind
1364 information when the label appears after the proc/procend. */
1365 if (within_entry_exit
)
1367 char *where
= frag_more (0);
1369 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1370 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
1371 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1372 (char *) &last_call_info
->ci_unwind
.descriptor
);
1377 as_bad ("Missing function name for .PROC (corrupted label chain)");
1380 as_bad ("Missing function name for .PROC");
1383 /* Assemble the instruction. Results are saved into "the_insn". */
1386 /* Get somewhere to put the assembled instrution. */
1389 /* Output the opcode. */
1390 md_number_to_chars (to
, the_insn
.opcode
, 4);
1392 /* If necessary output more stuff. */
1393 if (the_insn
.reloc
!= R_HPPA_NONE
)
1394 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1395 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1396 the_insn
.reloc
, the_insn
.field_selector
,
1397 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1400 /* Do the real work for assembling a single instruction. Store results
1401 into the global "the_insn" variable. */
1407 char *error_message
= "";
1408 char *s
, c
, *argstart
, *name
, *save_s
;
1412 int cmpltr
, nullif
, flag
, cond
, num
;
1413 unsigned long opcode
;
1414 struct pa_opcode
*insn
;
1416 /* Skip to something interesting. */
1417 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1436 as_bad ("Unknown opcode: `%s'", str
);
1442 /* Convert everything into lower case. */
1445 if (isupper (*save_s
))
1446 *save_s
= tolower (*save_s
);
1450 /* Look up the opcode in the has table. */
1451 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1453 as_bad ("Unknown opcode: `%s'", str
);
1462 /* Mark the location where arguments for the instruction start, then
1463 start processing them. */
1467 /* Do some initialization. */
1468 opcode
= insn
->match
;
1469 bzero (&the_insn
, sizeof (the_insn
));
1471 the_insn
.reloc
= R_HPPA_NONE
;
1473 /* Build the opcode, checking as we go to make
1474 sure that the operands match. */
1475 for (args
= insn
->args
;; ++args
)
1480 /* End of arguments. */
1496 /* These must match exactly. */
1505 /* Handle a 5 bit register or control register field at 10. */
1508 num
= pa_parse_number (&s
, 0);
1509 CHECK_FIELD (num
, 31, 0, 0);
1510 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1512 /* Handle a 5 bit register field at 15. */
1514 num
= pa_parse_number (&s
, 0);
1515 CHECK_FIELD (num
, 31, 0, 0);
1516 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1518 /* Handle a 5 bit register field at 31. */
1521 num
= pa_parse_number (&s
, 0);
1522 CHECK_FIELD (num
, 31, 0, 0);
1523 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1525 /* Handle a 5 bit field length at 31. */
1527 num
= pa_get_absolute_expression (&the_insn
, &s
);
1529 CHECK_FIELD (num
, 32, 1, 0);
1530 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1532 /* Handle a 5 bit immediate at 15. */
1534 num
= pa_get_absolute_expression (&the_insn
, &s
);
1536 CHECK_FIELD (num
, 15, -16, 0);
1537 low_sign_unext (num
, 5, &num
);
1538 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1540 /* Handle a 5 bit immediate at 31. */
1542 num
= pa_get_absolute_expression (&the_insn
, &s
);
1544 CHECK_FIELD (num
, 15, -16, 0)
1545 low_sign_unext (num
, 5, &num
);
1546 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1548 /* Handle an unsigned 5 bit immediate at 31. */
1550 num
= pa_get_absolute_expression (&the_insn
, &s
);
1552 CHECK_FIELD (num
, 31, 0, 0);
1553 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1555 /* Handle an unsigned 5 bit immediate at 15. */
1557 num
= pa_get_absolute_expression (&the_insn
, &s
);
1559 CHECK_FIELD (num
, 31, 0, 0);
1560 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1562 /* Handle a 2 bit space identifier at 17. */
1564 num
= pa_parse_number (&s
, 0);
1565 CHECK_FIELD (num
, 3, 0, 1);
1566 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1568 /* Handle a 3 bit space identifier at 18. */
1570 num
= pa_parse_number (&s
, 0);
1571 CHECK_FIELD (num
, 7, 0, 1);
1572 dis_assemble_3 (num
, &num
);
1573 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1575 /* Handle a completer for an indexing load or store. */
1581 while (*s
== ',' && i
< 2)
1584 if (strncasecmp (s
, "sm", 2) == 0)
1591 else if (strncasecmp (s
, "m", 1) == 0)
1593 else if (strncasecmp (s
, "s", 1) == 0)
1596 as_bad ("Invalid Indexed Load Completer.");
1601 as_bad ("Invalid Indexed Load Completer Syntax.");
1603 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1606 /* Handle a short load/store completer. */
1614 if (strncasecmp (s
, "ma", 2) == 0)
1619 else if (strncasecmp (s
, "mb", 2) == 0)
1625 as_bad ("Invalid Short Load/Store Completer.");
1629 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1632 /* Handle a stbys completer. */
1638 while (*s
== ',' && i
< 2)
1641 if (strncasecmp (s
, "m", 1) == 0)
1643 else if (strncasecmp (s
, "b", 1) == 0)
1645 else if (strncasecmp (s
, "e", 1) == 0)
1648 as_bad ("Invalid Store Bytes Short Completer");
1653 as_bad ("Invalid Store Bytes Short Completer");
1655 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1658 /* Handle a non-negated compare/stubtract condition. */
1660 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1663 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1666 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1668 /* Handle a negated or non-negated compare/subtract condition. */
1671 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1675 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1678 as_bad ("Invalid Compare/Subtract Condition.");
1683 /* Negated condition requires an opcode change. */
1687 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1689 /* Handle non-negated add condition. */
1691 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1694 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1697 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1699 /* Handle a negated or non-negated add condition. */
1702 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1706 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1709 as_bad ("Invalid Compare/Subtract Condition");
1714 /* Negated condition requires an opcode change. */
1718 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1720 /* Handle a compare/subtract condition. */
1727 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1732 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1735 as_bad ("Invalid Compare/Subtract Condition");
1739 opcode
|= cmpltr
<< 13;
1740 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1742 /* Handle a non-negated add condition. */
1751 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1755 if (strcmp (name
, "=") == 0)
1757 else if (strcmp (name
, "<") == 0)
1759 else if (strcmp (name
, "<=") == 0)
1761 else if (strcasecmp (name
, "nuv") == 0)
1763 else if (strcasecmp (name
, "znv") == 0)
1765 else if (strcasecmp (name
, "sv") == 0)
1767 else if (strcasecmp (name
, "od") == 0)
1769 else if (strcasecmp (name
, "n") == 0)
1771 else if (strcasecmp (name
, "tr") == 0)
1776 else if (strcmp (name
, "<>") == 0)
1781 else if (strcmp (name
, ">=") == 0)
1786 else if (strcmp (name
, ">") == 0)
1791 else if (strcasecmp (name
, "uv") == 0)
1796 else if (strcasecmp (name
, "vnz") == 0)
1801 else if (strcasecmp (name
, "nsv") == 0)
1806 else if (strcasecmp (name
, "ev") == 0)
1812 as_bad ("Invalid Add Condition: %s", name
);
1815 nullif
= pa_parse_nullif (&s
);
1816 opcode
|= nullif
<< 1;
1817 opcode
|= cmpltr
<< 13;
1818 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1820 /* HANDLE a logical instruction condition. */
1828 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1832 if (strcmp (name
, "=") == 0)
1834 else if (strcmp (name
, "<") == 0)
1836 else if (strcmp (name
, "<=") == 0)
1838 else if (strcasecmp (name
, "od") == 0)
1840 else if (strcasecmp (name
, "tr") == 0)
1845 else if (strcmp (name
, "<>") == 0)
1850 else if (strcmp (name
, ">=") == 0)
1855 else if (strcmp (name
, ">") == 0)
1860 else if (strcasecmp (name
, "ev") == 0)
1866 as_bad ("Invalid Logical Instruction Condition.");
1869 opcode
|= cmpltr
<< 13;
1870 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1872 /* Handle a unit instruction condition. */
1879 if (strncasecmp (s
, "sbz", 3) == 0)
1884 else if (strncasecmp (s
, "shz", 3) == 0)
1889 else if (strncasecmp (s
, "sdc", 3) == 0)
1894 else if (strncasecmp (s
, "sbc", 3) == 0)
1899 else if (strncasecmp (s
, "shc", 3) == 0)
1904 else if (strncasecmp (s
, "tr", 2) == 0)
1910 else if (strncasecmp (s
, "nbz", 3) == 0)
1916 else if (strncasecmp (s
, "nhz", 3) == 0)
1922 else if (strncasecmp (s
, "ndc", 3) == 0)
1928 else if (strncasecmp (s
, "nbc", 3) == 0)
1934 else if (strncasecmp (s
, "nhc", 3) == 0)
1941 as_bad ("Invalid Logical Instruction Condition.");
1943 opcode
|= cmpltr
<< 13;
1944 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1946 /* Handle a shift/extract/deposit condition. */
1954 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1958 if (strcmp (name
, "=") == 0)
1960 else if (strcmp (name
, "<") == 0)
1962 else if (strcasecmp (name
, "od") == 0)
1964 else if (strcasecmp (name
, "tr") == 0)
1966 else if (strcmp (name
, "<>") == 0)
1968 else if (strcmp (name
, ">=") == 0)
1970 else if (strcasecmp (name
, "ev") == 0)
1972 /* Handle movb,n. Put things back the way they were.
1973 This includes moving s back to where it started. */
1974 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1981 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1984 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1986 /* Handle bvb and bb conditions. */
1992 if (strncmp (s
, "<", 1) == 0)
1997 else if (strncmp (s
, ">=", 2) == 0)
2003 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2005 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2007 /* Handle a system control completer. */
2009 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2017 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2019 /* Handle a nullification completer for branch instructions. */
2021 nullif
= pa_parse_nullif (&s
);
2022 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2024 /* Handle a nullification completer for copr and spop insns. */
2026 nullif
= pa_parse_nullif (&s
);
2027 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2029 /* Handle a 11 bit immediate at 31. */
2031 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2034 if (the_insn
.exp
.X_op
== O_constant
)
2036 num
= evaluate_absolute (&the_insn
);
2037 CHECK_FIELD (num
, 1023, -1024, 0);
2038 low_sign_unext (num
, 11, &num
);
2039 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2043 if (is_DP_relative (the_insn
.exp
))
2044 the_insn
.reloc
= R_HPPA_GOTOFF
;
2045 else if (is_PC_relative (the_insn
.exp
))
2046 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2047 else if (is_complex (the_insn
.exp
))
2048 the_insn
.reloc
= R_HPPA_COMPLEX
;
2050 the_insn
.reloc
= R_HPPA
;
2051 the_insn
.format
= 11;
2055 /* Handle a 14 bit immediate at 31. */
2057 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2060 if (the_insn
.exp
.X_op
== O_constant
)
2062 num
= evaluate_absolute (&the_insn
);
2063 CHECK_FIELD (num
, 8191, -8192, 0);
2064 low_sign_unext (num
, 14, &num
);
2065 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2069 if (is_DP_relative (the_insn
.exp
))
2070 the_insn
.reloc
= R_HPPA_GOTOFF
;
2071 else if (is_PC_relative (the_insn
.exp
))
2072 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2073 else if (is_complex (the_insn
.exp
))
2074 the_insn
.reloc
= R_HPPA_COMPLEX
;
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
;
2099 else if (is_complex (the_insn
.exp
))
2100 the_insn
.reloc
= R_HPPA_COMPLEX
;
2102 the_insn
.reloc
= R_HPPA
;
2103 the_insn
.format
= 21;
2107 /* Handle a 12 bit branch displacement. */
2109 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2113 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2115 unsigned int w1
, w
, result
;
2117 num
= evaluate_absolute (&the_insn
);
2120 as_bad ("Branch to unaligned address");
2123 CHECK_FIELD (num
, 8191, -8192, 0);
2124 sign_unext ((num
- 8) >> 2, 12, &result
);
2125 dis_assemble_12 (result
, &w1
, &w
);
2126 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2130 if (is_complex (the_insn
.exp
))
2131 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2133 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2134 the_insn
.format
= 12;
2135 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2136 bzero (&last_call_desc
, sizeof (struct call_desc
));
2141 /* Handle a 17 bit branch displacement. */
2143 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2147 if (!the_insn
.exp
.X_add_symbol
2148 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2151 unsigned int w2
, w1
, w
, result
;
2153 num
= evaluate_absolute (&the_insn
);
2156 as_bad ("Branch to unaligned address");
2159 CHECK_FIELD (num
, 262143, -262144, 0);
2161 if (the_insn
.exp
.X_add_symbol
)
2164 sign_unext (num
>> 2, 17, &result
);
2165 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2166 INSERT_FIELD_AND_CONTINUE (opcode
,
2167 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2171 if (is_complex (the_insn
.exp
))
2172 the_insn
.reloc
= R_HPPA_COMPLEX_PCREL_CALL
;
2174 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2175 the_insn
.format
= 17;
2176 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2177 bzero (&last_call_desc
, sizeof (struct call_desc
));
2181 /* Handle an absolute 17 bit branch target. */
2183 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2187 if (!the_insn
.exp
.X_add_symbol
2188 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2191 unsigned int w2
, w1
, w
, result
;
2193 num
= evaluate_absolute (&the_insn
);
2196 as_bad ("Branch to unaligned address");
2199 CHECK_FIELD (num
, 262143, -262144, 0);
2201 if (the_insn
.exp
.X_add_symbol
)
2204 sign_unext (num
>> 2, 17, &result
);
2205 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2206 INSERT_FIELD_AND_CONTINUE (opcode
,
2207 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2211 if (is_complex (the_insn
.exp
))
2212 the_insn
.reloc
= R_HPPA_COMPLEX_ABS_CALL
;
2214 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2215 the_insn
.format
= 17;
2219 /* Handle a 5 bit shift count at 26. */
2221 num
= pa_get_absolute_expression (&the_insn
, &s
);
2223 CHECK_FIELD (num
, 31, 0, 0);
2224 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2226 /* Handle a 5 bit bit position at 26. */
2228 num
= pa_get_absolute_expression (&the_insn
, &s
);
2230 CHECK_FIELD (num
, 31, 0, 0);
2231 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2233 /* Handle a 5 bit immediate at 10. */
2235 num
= pa_get_absolute_expression (&the_insn
, &s
);
2237 CHECK_FIELD (num
, 31, 0, 0);
2238 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2240 /* Handle a 13 bit immediate at 18. */
2242 num
= pa_get_absolute_expression (&the_insn
, &s
);
2244 CHECK_FIELD (num
, 4095, -4096, 0);
2245 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2247 /* Handle a 26 bit immediate at 31. */
2249 num
= pa_get_absolute_expression (&the_insn
, &s
);
2251 CHECK_FIELD (num
, 671108864, 0, 0);
2252 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2254 /* Handle a 3 bit SFU identifier at 25. */
2257 as_bad ("Invalid SFU identifier");
2258 num
= pa_get_absolute_expression (&the_insn
, &s
);
2260 CHECK_FIELD (num
, 7, 0, 0);
2261 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2263 /* Handle a 20 bit SOP field for spop0. */
2265 num
= pa_get_absolute_expression (&the_insn
, &s
);
2267 CHECK_FIELD (num
, 1048575, 0, 0);
2268 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2269 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2271 /* Handle a 15bit SOP field for spop1. */
2273 num
= pa_get_absolute_expression (&the_insn
, &s
);
2275 CHECK_FIELD (num
, 32767, 0, 0);
2276 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2278 /* Handle a 10bit SOP field for spop3. */
2280 num
= pa_get_absolute_expression (&the_insn
, &s
);
2282 CHECK_FIELD (num
, 1023, 0, 0);
2283 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2284 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2286 /* Handle a 15 bit SOP field for spop2. */
2288 num
= pa_get_absolute_expression (&the_insn
, &s
);
2290 CHECK_FIELD (num
, 32767, 0, 0);
2291 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2292 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2294 /* Handle a 3-bit co-processor ID field. */
2297 as_bad ("Invalid COPR identifier");
2298 num
= pa_get_absolute_expression (&the_insn
, &s
);
2300 CHECK_FIELD (num
, 7, 0, 0);
2301 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2303 /* Handle a 22bit SOP field for copr. */
2305 num
= pa_get_absolute_expression (&the_insn
, &s
);
2307 CHECK_FIELD (num
, 4194303, 0, 0);
2308 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2309 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2311 /* Handle a source FP operand format completer. */
2313 flag
= pa_parse_fp_format (&s
);
2314 the_insn
.fpof1
= flag
;
2315 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2317 /* Handle a destination FP operand format completer. */
2319 /* pa_parse_format needs the ',' prefix. */
2321 flag
= pa_parse_fp_format (&s
);
2322 the_insn
.fpof2
= flag
;
2323 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2325 /* Handle FP compare conditions. */
2327 cond
= pa_parse_fp_cmp_cond (&s
);
2328 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2330 /* Handle L/R register halves like 't'. */
2333 struct pa_89_fp_reg_struct result
;
2335 pa_parse_number (&s
, &result
);
2336 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2337 opcode
|= result
.number_part
;
2339 /* 0x30 opcodes are FP arithmetic operation opcodes
2340 and need to be turned into 0x38 opcodes. This
2341 is not necessary for loads/stores. */
2342 if (need_89_opcode (&the_insn
, &result
)
2343 && ((opcode
& 0xfc000000) == 0x30000000))
2346 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2349 /* Handle L/R register halves like 'b'. */
2352 struct pa_89_fp_reg_struct result
;
2354 pa_parse_number (&s
, &result
);
2355 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2356 opcode
|= result
.number_part
<< 21;
2357 if (need_89_opcode (&the_insn
, &result
))
2359 opcode
|= (result
.l_r_select
& 1) << 7;
2365 /* Handle L/R register halves like 'x'. */
2368 struct pa_89_fp_reg_struct result
;
2370 pa_parse_number (&s
, &result
);
2371 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2372 opcode
|= (result
.number_part
& 0x1f) << 16;
2373 if (need_89_opcode (&the_insn
, &result
))
2375 opcode
|= (result
.l_r_select
& 1) << 12;
2381 /* Handle a 5 bit register field at 10. */
2384 struct pa_89_fp_reg_struct result
;
2386 pa_parse_number (&s
, &result
);
2387 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2388 if (the_insn
.fpof1
== SGL
)
2390 result
.number_part
&= 0xF;
2391 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2393 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2396 /* Handle a 5 bit register field at 15. */
2399 struct pa_89_fp_reg_struct result
;
2401 pa_parse_number (&s
, &result
);
2402 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2403 if (the_insn
.fpof1
== SGL
)
2405 result
.number_part
&= 0xF;
2406 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2408 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2411 /* Handle a 5 bit register field at 31. */
2414 struct pa_89_fp_reg_struct result
;
2416 pa_parse_number (&s
, &result
);
2417 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2418 if (the_insn
.fpof1
== SGL
)
2420 result
.number_part
&= 0xF;
2421 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2423 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2426 /* Handle a 5 bit register field at 20. */
2429 struct pa_89_fp_reg_struct result
;
2431 pa_parse_number (&s
, &result
);
2432 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2433 if (the_insn
.fpof1
== SGL
)
2435 result
.number_part
&= 0xF;
2436 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2438 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2441 /* Handle a 5 bit register field at 25. */
2444 struct pa_89_fp_reg_struct result
;
2446 pa_parse_number (&s
, &result
);
2447 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2448 if (the_insn
.fpof1
== SGL
)
2450 result
.number_part
&= 0xF;
2451 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2453 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2456 /* Handle a floating point operand format at 26.
2457 Only allows single and double precision. */
2459 flag
= pa_parse_fp_format (&s
);
2465 the_insn
.fpof1
= flag
;
2471 as_bad ("Invalid Floating Point Operand Format.");
2481 /* Check if the args matched. */
2484 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2485 && !strcmp (insn
->name
, insn
[1].name
))
2493 as_bad ("Invalid operands %s", error_message
);
2500 the_insn
.opcode
= opcode
;
2503 /* Turn a string in input_line_pointer into a floating point constant of type
2504 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2505 emitted is stored in *sizeP . An error message or NULL is returned. */
2507 #define MAX_LITTLENUMS 6
2510 md_atof (type
, litP
, sizeP
)
2516 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2517 LITTLENUM_TYPE
*wordP
;
2549 return "Bad call to MD_ATOF()";
2551 t
= atof_ieee (input_line_pointer
, type
, words
);
2553 input_line_pointer
= t
;
2554 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2555 for (wordP
= words
; prec
--;)
2557 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2558 litP
+= sizeof (LITTLENUM_TYPE
);
2563 /* Write out big-endian. */
2566 md_number_to_chars (buf
, val
, n
)
2571 number_to_chars_bigendian (buf
, val
, n
);
2574 /* Translate internal representation of relocation info to BFD target
2578 tc_gen_reloc (section
, fixp
)
2583 struct hppa_fix_struct
*hppa_fixp
;
2584 bfd_reloc_code_real_type code
;
2585 static int unwind_reloc_fixp_cnt
= 0;
2586 static arelent
*unwind_reloc_entryP
= NULL
;
2587 static arelent
*no_relocs
= NULL
;
2589 bfd_reloc_code_real_type
**codes
;
2593 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2594 if (fixp
->fx_addsy
== 0)
2596 assert (hppa_fixp
!= 0);
2597 assert (section
!= 0);
2600 /* Yuk. I would really like to push all this ELF specific unwind
2601 crud into BFD and the linker. That's how SOM does it -- and
2602 if we could make ELF emulate that then we could share more code
2603 in GAS (and potentially a gnu-linker later).
2605 Unwind section relocations are handled in a special way.
2606 The relocations for the .unwind section are originally
2607 built in the usual way. That is, for each unwind table
2608 entry there are two relocations: one for the beginning of
2609 the function and one for the end.
2611 The first time we enter this function we create a
2612 relocation of the type R_HPPA_UNWIND_ENTRIES. The addend
2613 of the relocation is initialized to 0. Each additional
2614 pair of times this function is called for the unwind
2615 section represents an additional unwind table entry. Thus,
2616 the addend of the relocation should end up to be the number
2617 of unwind table entries. */
2618 if (strcmp (UNWIND_SECTION_NAME
, section
->name
) == 0)
2620 if (unwind_reloc_entryP
== NULL
)
2622 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2624 assert (reloc
!= 0);
2625 unwind_reloc_entryP
= reloc
;
2626 unwind_reloc_fixp_cnt
++;
2627 unwind_reloc_entryP
->address
2628 = fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2629 /* A pointer to any function will do. We only
2630 need one to tell us what section the unwind
2631 relocations are for. */
2632 unwind_reloc_entryP
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2633 hppa_fixp
->fx_r_type
= code
= R_HPPA_UNWIND_ENTRIES
;
2634 fixp
->fx_r_type
= R_HPPA_UNWIND
;
2635 unwind_reloc_entryP
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2636 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2637 relocs
= (arelent
**) bfd_alloc_by_size_t (stdoutput
,
2638 sizeof (arelent
*) * 2);
2639 assert (relocs
!= 0);
2640 relocs
[0] = unwind_reloc_entryP
;
2644 unwind_reloc_fixp_cnt
++;
2645 unwind_reloc_entryP
->addend
= unwind_reloc_fixp_cnt
/ 2;
2651 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2652 assert (reloc
!= 0);
2654 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2655 codes
= hppa_gen_reloc_type (stdoutput
,
2657 hppa_fixp
->fx_r_format
,
2658 hppa_fixp
->fx_r_field
);
2660 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2663 relocs
= (arelent
**)
2664 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2665 assert (relocs
!= 0);
2667 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2668 sizeof (arelent
) * n_relocs
);
2670 assert (reloc
!= 0);
2672 for (i
= 0; i
< n_relocs
; i
++)
2673 relocs
[i
] = &reloc
[i
];
2675 relocs
[n_relocs
] = NULL
;
2678 switch (fixp
->fx_r_type
)
2680 case R_HPPA_COMPLEX
:
2681 case R_HPPA_COMPLEX_PCREL_CALL
:
2682 case R_HPPA_COMPLEX_ABS_CALL
:
2683 assert (n_relocs
== 5);
2685 for (i
= 0; i
< n_relocs
; i
++)
2687 reloc
[i
].sym_ptr_ptr
= NULL
;
2688 reloc
[i
].address
= 0;
2689 reloc
[i
].addend
= 0;
2690 reloc
[i
].howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[i
]);
2691 assert (reloc
[i
].howto
&& *codes
[i
] == reloc
[i
].howto
->type
);
2694 reloc
[0].sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2695 reloc
[1].sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2696 reloc
[4].address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2698 if (fixp
->fx_r_type
== R_HPPA_COMPLEX
)
2699 reloc
[3].addend
= fixp
->fx_addnumber
;
2700 else if (fixp
->fx_r_type
== R_HPPA_COMPLEX_PCREL_CALL
||
2701 fixp
->fx_r_type
== R_HPPA_COMPLEX_ABS_CALL
)
2702 reloc
[1].addend
= fixp
->fx_addnumber
;
2707 assert (n_relocs
== 1);
2711 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2712 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2713 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2714 reloc
->addend
= 0; /* default */
2716 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2718 /* Now, do any processing that is dependent on the relocation type. */
2721 case R_HPPA_PLABEL_32
:
2722 case R_HPPA_PLABEL_11
:
2723 case R_HPPA_PLABEL_14
:
2724 case R_HPPA_PLABEL_L21
:
2725 case R_HPPA_PLABEL_R11
:
2726 case R_HPPA_PLABEL_R14
:
2727 /* For plabel relocations, the addend of the
2728 relocation should be either 0 (no static link) or 2
2729 (static link required).
2731 FIXME: We always assume no static link! */
2735 case R_HPPA_ABS_CALL_11
:
2736 case R_HPPA_ABS_CALL_14
:
2737 case R_HPPA_ABS_CALL_17
:
2738 case R_HPPA_ABS_CALL_L21
:
2739 case R_HPPA_ABS_CALL_R11
:
2740 case R_HPPA_ABS_CALL_R14
:
2741 case R_HPPA_ABS_CALL_R17
:
2742 case R_HPPA_ABS_CALL_LS21
:
2743 case R_HPPA_ABS_CALL_RS11
:
2744 case R_HPPA_ABS_CALL_RS14
:
2745 case R_HPPA_ABS_CALL_RS17
:
2746 case R_HPPA_ABS_CALL_LD21
:
2747 case R_HPPA_ABS_CALL_RD11
:
2748 case R_HPPA_ABS_CALL_RD14
:
2749 case R_HPPA_ABS_CALL_RD17
:
2750 case R_HPPA_ABS_CALL_LR21
:
2751 case R_HPPA_ABS_CALL_RR14
:
2752 case R_HPPA_ABS_CALL_RR17
:
2754 case R_HPPA_PCREL_CALL_11
:
2755 case R_HPPA_PCREL_CALL_14
:
2756 case R_HPPA_PCREL_CALL_17
:
2757 case R_HPPA_PCREL_CALL_L21
:
2758 case R_HPPA_PCREL_CALL_R11
:
2759 case R_HPPA_PCREL_CALL_R14
:
2760 case R_HPPA_PCREL_CALL_R17
:
2761 case R_HPPA_PCREL_CALL_LS21
:
2762 case R_HPPA_PCREL_CALL_RS11
:
2763 case R_HPPA_PCREL_CALL_RS14
:
2764 case R_HPPA_PCREL_CALL_RS17
:
2765 case R_HPPA_PCREL_CALL_LD21
:
2766 case R_HPPA_PCREL_CALL_RD11
:
2767 case R_HPPA_PCREL_CALL_RD14
:
2768 case R_HPPA_PCREL_CALL_RD17
:
2769 case R_HPPA_PCREL_CALL_LR21
:
2770 case R_HPPA_PCREL_CALL_RR14
:
2771 case R_HPPA_PCREL_CALL_RR17
:
2772 /* The constant is stored in the instruction. */
2773 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2776 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
)
2779 reloc
->addend
= fixp
->fx_addnumber
;
2786 /* Walk over reach relocation returned by the BFD backend. */
2787 for (i
= 0; i
< n_relocs
; i
++)
2791 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2792 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2793 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2799 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2804 /* For plabel relocations, the addend of the
2805 relocation should be either 0 (no static link) or 2
2806 (static link required).
2808 FIXME: We always assume no static link! */
2809 relocs
[i
]->addend
= 0;
2820 /* There is no symbol or addend associated with these fixups. */
2821 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2822 relocs
[i
]->addend
= 0;
2826 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
)
2827 relocs
[i
]->addend
= 0;
2829 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2838 /* Process any machine dependent frag types. */
2841 md_convert_frag (abfd
, sec
, fragP
)
2843 register asection
*sec
;
2844 register fragS
*fragP
;
2846 unsigned int address
;
2848 if (fragP
->fr_type
== rs_machine_dependent
)
2850 switch ((int) fragP
->fr_subtype
)
2853 fragP
->fr_type
= rs_fill
;
2854 know (fragP
->fr_var
== 1);
2855 know (fragP
->fr_next
);
2856 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2857 if (address
% fragP
->fr_offset
)
2860 fragP
->fr_next
->fr_address
2865 fragP
->fr_offset
= 0;
2871 /* Round up a section size to the appropriate boundary. */
2874 md_section_align (segment
, size
)
2878 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2879 int align2
= (1 << align
) - 1;
2881 return (size
+ align2
) & ~align2
;
2884 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2886 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2888 addressT from_addr
, to_addr
;
2892 fprintf (stderr
, "pa_create_short_jmp\n");
2896 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2898 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2900 addressT from_addr
, to_addr
;
2904 fprintf (stderr
, "pa_create_long_jump\n");
2908 /* Return the approximate size of a frag before relaxation has occurred. */
2910 md_estimate_size_before_relax (fragP
, segment
)
2911 register fragS
*fragP
;
2918 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2924 /* Parse machine dependent options. There are none on the PA. */
2926 md_parse_option (argP
, cntP
, vecP
)
2934 /* We have no need to default values of symbols. */
2937 md_undefined_symbol (name
)
2943 /* Parse an operand that is machine-specific.
2944 We just return without modifying the expression as we have nothing
2948 md_operand (expressionP
)
2949 expressionS
*expressionP
;
2953 /* Apply a fixup to an instruction. */
2956 md_apply_fix (fixP
, valp
)
2960 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2961 struct hppa_fix_struct
*hppa_fixP
;
2962 long new_val
, result
;
2963 unsigned int w1
, w2
, w
;
2966 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2967 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2968 never be "applied" (they are just markers). */
2970 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2971 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2975 /* There should have been an HPPA specific fixup associated
2976 with the GAS fixup. */
2979 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2980 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2982 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2985 /* Remember this value for emit_reloc. FIXME, is this braindamage
2986 documented anywhere!?! */
2987 fixP
->fx_addnumber
= val
;
2989 /* Check if this is an undefined symbol. No relocation can
2990 possibly be performed in this case.
2992 Also avoid doing anything for pc-relative fixups in which the
2993 fixup is in a different space than the symbol it references. */
2994 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2996 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
)
2999 && S_GET_SEGMENT (fixP
->fx_addsy
) != hppa_fixP
->segment
)
3002 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
3005 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
3006 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
3007 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
3008 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
3009 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
3010 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
3011 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
3012 && !(fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
))
3013 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3019 /* Handle all opcodes with the 'j' operand type. */
3021 CHECK_FIELD (new_val
, 8191, -8192, 0);
3023 /* Mask off 14 bits to be changed. */
3024 bfd_put_32 (stdoutput
,
3025 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3027 low_sign_unext (new_val
, 14, &result
);
3030 /* Handle all opcodes with the 'k' operand type. */
3032 CHECK_FIELD (new_val
, 2097152, 0, 0);
3034 /* Mask off 21 bits to be changed. */
3035 bfd_put_32 (stdoutput
,
3036 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3038 dis_assemble_21 (new_val
, &result
);
3041 /* Handle all the opcodes with the 'i' operand type. */
3043 CHECK_FIELD (new_val
, 1023, -1023, 0);
3045 /* Mask off 11 bits to be changed. */
3046 bfd_put_32 (stdoutput
,
3047 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3049 low_sign_unext (new_val
, 11, &result
);
3052 /* Handle all the opcodes with the 'w' operand type. */
3054 CHECK_FIELD (new_val
, 8191, -8192, 0)
3056 /* Mask off 11 bits to be changed. */
3057 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3058 bfd_put_32 (stdoutput
,
3059 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3062 dis_assemble_12 (result
, &w1
, &w
);
3063 result
= ((w1
<< 2) | w
);
3066 /* Handle some of the opcodes with the 'W' operand type. */
3069 #define stub_needed(CALLER, CALLEE) \
3070 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3071 /* It is necessary to force PC-relative calls/jumps to have a
3072 relocation entry if they're going to need either a argument
3073 relocation or long call stub. FIXME. Can't we need the same
3074 for absolute calls? */
3076 && (stub_needed (((obj_symbol_type
*)
3077 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3078 hppa_fixP
->fx_arg_reloc
)))
3082 CHECK_FIELD (new_val
, 262143, -262144, 0);
3084 /* Mask off 17 bits to be changed. */
3085 bfd_put_32 (stdoutput
,
3086 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3088 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3089 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3090 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3095 /* These are ELF specific relocations. ELF unfortunately
3096 handles unwinds in a completely different manner. */
3097 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3098 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3099 result
= fixP
->fx_addnumber
;
3104 fixP
->fx_addnumber
= fixP
->fx_offset
;
3105 /* If we have a real relocation, then we want zero to
3106 be stored in the object file. If no relocation is going
3107 to be emitted, then we need to store new_val into the
3110 bfd_put_32 (stdoutput
, 0, buf
);
3112 bfd_put_32 (stdoutput
, new_val
, buf
);
3121 as_bad ("Unknown relocation encountered in md_apply_fix.");
3125 /* Insert the relocation. */
3126 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3131 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3132 (unsigned int) fixP
, fixP
->fx_r_type
);
3137 /* Exactly what point is a PC-relative offset relative TO?
3138 On the PA, they're relative to the address of the offset. */
3141 md_pcrel_from (fixP
)
3144 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3147 /* Return nonzero if the input line pointer is at the end of
3151 is_end_of_statement ()
3153 return ((*input_line_pointer
== '\n')
3154 || (*input_line_pointer
== ';')
3155 || (*input_line_pointer
== '!'));
3158 /* Read a number from S. The number might come in one of many forms,
3159 the most common will be a hex or decimal constant, but it could be
3160 a pre-defined register (Yuk!), or an absolute symbol.
3162 Return a number or -1 for failure.
3164 When parsing PA-89 FP register numbers RESULT will be
3165 the address of a structure to return information about
3166 L/R half of FP registers, store results there as appropriate.
3168 pa_parse_number can not handle negative constants and will fail
3169 horribly if it is passed such a constant. */
3172 pa_parse_number (s
, result
)
3174 struct pa_89_fp_reg_struct
*result
;
3183 /* Skip whitespace before the number. */
3184 while (*p
== ' ' || *p
== '\t')
3187 /* Store info in RESULT if requested by caller. */
3190 result
->number_part
= -1;
3191 result
->l_r_select
= -1;
3197 /* Looks like a number. */
3200 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3202 /* The number is specified in hex. */
3204 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3205 || ((*p
>= 'A') && (*p
<= 'F')))
3208 num
= num
* 16 + *p
- '0';
3209 else if (*p
>= 'a' && *p
<= 'f')
3210 num
= num
* 16 + *p
- 'a' + 10;
3212 num
= num
* 16 + *p
- 'A' + 10;
3218 /* The number is specified in decimal. */
3219 while (isdigit (*p
))
3221 num
= num
* 10 + *p
- '0';
3226 /* Store info in RESULT if requested by the caller. */
3229 result
->number_part
= num
;
3231 if (IS_R_SELECT (p
))
3233 result
->l_r_select
= 1;
3236 else if (IS_L_SELECT (p
))
3238 result
->l_r_select
= 0;
3242 result
->l_r_select
= 0;
3247 /* The number might be a predefined register. */
3252 /* Tege hack: Special case for general registers as the general
3253 code makes a binary search with case translation, and is VERY
3258 if (*p
== 'e' && *(p
+ 1) == 't'
3259 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3262 num
= *p
- '0' + 28;
3270 else if (!isdigit (*p
))
3273 as_bad ("Undefined register: '%s'.", name
);
3279 num
= num
* 10 + *p
++ - '0';
3280 while (isdigit (*p
));
3285 /* Do a normal register search. */
3286 while (is_part_of_name (c
))
3292 status
= reg_name_search (name
);
3298 as_bad ("Undefined register: '%s'.", name
);
3304 /* Store info in RESULT if requested by caller. */
3307 result
->number_part
= num
;
3308 if (IS_R_SELECT (p
- 1))
3309 result
->l_r_select
= 1;
3310 else if (IS_L_SELECT (p
- 1))
3311 result
->l_r_select
= 0;
3313 result
->l_r_select
= 0;
3318 /* And finally, it could be a symbol in the absolute section which
3319 is effectively a constant. */
3323 while (is_part_of_name (c
))
3329 if ((sym
= symbol_find (name
)) != NULL
)
3331 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3332 num
= S_GET_VALUE (sym
);
3336 as_bad ("Non-absolute symbol: '%s'.", name
);
3342 /* There is where we'd come for an undefined symbol
3343 or for an empty string. For an empty string we
3344 will return zero. That's a concession made for
3345 compatability with the braindamaged HP assemblers. */
3351 as_bad ("Undefined absolute constant: '%s'.", name
);
3357 /* Store info in RESULT if requested by caller. */
3360 result
->number_part
= num
;
3361 if (IS_R_SELECT (p
- 1))
3362 result
->l_r_select
= 1;
3363 else if (IS_L_SELECT (p
- 1))
3364 result
->l_r_select
= 0;
3366 result
->l_r_select
= 0;
3374 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3376 /* Given NAME, find the register number associated with that name, return
3377 the integer value associated with the given name or -1 on failure. */
3380 reg_name_search (name
)
3383 int middle
, low
, high
;
3387 high
= REG_NAME_CNT
- 1;
3391 middle
= (low
+ high
) / 2;
3392 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3398 return pre_defined_registers
[middle
].value
;
3400 while (low
<= high
);
3406 /* Return nonzero if the given INSN and L/R information will require
3407 a new PA-89 opcode. */
3410 need_89_opcode (insn
, result
)
3412 struct pa_89_fp_reg_struct
*result
;
3414 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3420 /* Parse a condition for a fcmp instruction. Return the numerical
3421 code associated with the condition. */
3424 pa_parse_fp_cmp_cond (s
)
3431 for (i
= 0; i
< 32; i
++)
3433 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3434 strlen (fp_cond_map
[i
].string
)) == 0)
3436 cond
= fp_cond_map
[i
].cond
;
3437 *s
+= strlen (fp_cond_map
[i
].string
);
3438 while (**s
== ' ' || **s
== '\t')
3444 as_bad ("Invalid FP Compare Condition: %c", **s
);
3448 /* Parse an FP operand format completer returning the completer
3451 static fp_operand_format
3452 pa_parse_fp_format (s
)
3461 if (strncasecmp (*s
, "sgl", 3) == 0)
3466 else if (strncasecmp (*s
, "dbl", 3) == 0)
3471 else if (strncasecmp (*s
, "quad", 4) == 0)
3478 format
= ILLEGAL_FMT
;
3479 as_bad ("Invalid FP Operand Format: %3s", *s
);
3486 /* Convert from a selector string into a selector type. */
3489 pa_chk_field_selector (str
)
3492 int middle
, low
, high
;
3496 /* Read past any whitespace. */
3497 /* FIXME: should we read past newlines and formfeeds??? */
3498 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3501 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3502 name
[0] = tolower ((*str
)[0]),
3504 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3505 name
[0] = tolower ((*str
)[0]),
3506 name
[1] = tolower ((*str
)[1]),
3512 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3516 middle
= (low
+ high
) / 2;
3517 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3524 *str
+= strlen (name
) + 1;
3525 return selector_table
[middle
].field_selector
;
3528 while (low
<= high
);
3533 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3536 get_expression (str
)
3542 save_in
= input_line_pointer
;
3543 input_line_pointer
= str
;
3544 seg
= expression (&the_insn
.exp
);
3545 if (!(seg
== absolute_section
3546 || seg
== undefined_section
3547 || SEG_NORMAL (seg
)))
3549 as_warn ("Bad segment in expression.");
3550 expr_end
= input_line_pointer
;
3551 input_line_pointer
= save_in
;
3554 expr_end
= input_line_pointer
;
3555 input_line_pointer
= save_in
;
3559 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3561 pa_get_absolute_expression (insn
, strp
)
3567 insn
->field_selector
= pa_chk_field_selector (strp
);
3568 save_in
= input_line_pointer
;
3569 input_line_pointer
= *strp
;
3570 expression (&insn
->exp
);
3571 if (insn
->exp
.X_op
!= O_constant
)
3573 as_bad ("Bad segment (should be absolute).");
3574 expr_end
= input_line_pointer
;
3575 input_line_pointer
= save_in
;
3578 expr_end
= input_line_pointer
;
3579 input_line_pointer
= save_in
;
3580 return evaluate_absolute (insn
);
3583 /* Evaluate an absolute expression EXP which may be modified by
3584 the selector FIELD_SELECTOR. Return the value of the expression. */
3586 evaluate_absolute (insn
)
3591 int field_selector
= insn
->field_selector
;
3594 value
= exp
.X_add_number
;
3596 switch (field_selector
)
3602 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3604 if (value
& 0x00000400)
3606 value
= (value
& 0xfffff800) >> 11;
3609 /* Sign extend from bit 21. */
3611 if (value
& 0x00000400)
3612 value
|= 0xfffff800;
3617 /* Arithmetic shift right 11 bits. */
3619 value
= (value
& 0xfffff800) >> 11;
3622 /* Set bits 0-20 to zero. */
3624 value
= value
& 0x7ff;
3627 /* Add 0x800 and arithmetic shift right 11 bits. */
3630 value
= (value
& 0xfffff800) >> 11;
3633 /* Set bitgs 0-21 to one. */
3635 value
|= 0xfffff800;
3638 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3640 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3644 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3649 BAD_CASE (field_selector
);
3655 /* Given an argument location specification return the associated
3656 argument location number. */
3659 pa_build_arg_reloc (type_name
)
3663 if (strncasecmp (type_name
, "no", 2) == 0)
3665 if (strncasecmp (type_name
, "gr", 2) == 0)
3667 else if (strncasecmp (type_name
, "fr", 2) == 0)
3669 else if (strncasecmp (type_name
, "fu", 2) == 0)
3672 as_bad ("Invalid argument location: %s\n", type_name
);
3677 /* Encode and return an argument relocation specification for
3678 the given register in the location specified by arg_reloc. */
3681 pa_align_arg_reloc (reg
, arg_reloc
)
3683 unsigned int arg_reloc
;
3685 unsigned int new_reloc
;
3687 new_reloc
= arg_reloc
;
3703 as_bad ("Invalid argument description: %d", reg
);
3709 /* Parse a PA nullification completer (,n). Return nonzero if the
3710 completer was found; return zero if no completer was found. */
3722 if (strncasecmp (*s
, "n", 1) == 0)
3726 as_bad ("Invalid Nullification: (%c)", **s
);
3735 /* Parse a non-negated compare/subtract completer returning the
3736 number (for encoding in instrutions) of the given completer.
3738 ISBRANCH specifies whether or not this is parsing a condition
3739 completer for a branch (vs a nullification completer for a
3740 computational instruction. */
3743 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3748 char *name
= *s
+ 1;
3756 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3760 if (strcmp (name
, "=") == 0)
3764 else if (strcmp (name
, "<") == 0)
3768 else if (strcmp (name
, "<=") == 0)
3772 else if (strcmp (name
, "<<") == 0)
3776 else if (strcmp (name
, "<<=") == 0)
3780 else if (strcasecmp (name
, "sv") == 0)
3784 else if (strcasecmp (name
, "od") == 0)
3788 /* If we have something like addb,n then there is no condition
3790 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3801 /* Reset pointers if this was really a ,n for a branch instruction. */
3802 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3808 /* Parse a negated compare/subtract completer returning the
3809 number (for encoding in instrutions) of the given completer.
3811 ISBRANCH specifies whether or not this is parsing a condition
3812 completer for a branch (vs a nullification completer for a
3813 computational instruction. */
3816 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3821 char *name
= *s
+ 1;
3829 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3833 if (strcasecmp (name
, "tr") == 0)
3837 else if (strcmp (name
, "<>") == 0)
3841 else if (strcmp (name
, ">=") == 0)
3845 else if (strcmp (name
, ">") == 0)
3849 else if (strcmp (name
, ">>=") == 0)
3853 else if (strcmp (name
, ">>") == 0)
3857 else if (strcasecmp (name
, "nsv") == 0)
3861 else if (strcasecmp (name
, "ev") == 0)
3865 /* If we have something like addb,n then there is no condition
3867 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3878 /* Reset pointers if this was really a ,n for a branch instruction. */
3879 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3885 /* Parse a non-negated addition completer returning the number
3886 (for encoding in instrutions) of the given completer.
3888 ISBRANCH specifies whether or not this is parsing a condition
3889 completer for a branch (vs a nullification completer for a
3890 computational instruction. */
3893 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3898 char *name
= *s
+ 1;
3906 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3910 if (strcmp (name
, "=") == 0)
3914 else if (strcmp (name
, "<") == 0)
3918 else if (strcmp (name
, "<=") == 0)
3922 else if (strcasecmp (name
, "nuv") == 0)
3926 else if (strcasecmp (name
, "znv") == 0)
3930 else if (strcasecmp (name
, "sv") == 0)
3934 else if (strcasecmp (name
, "od") == 0)
3938 /* If we have something like addb,n then there is no condition
3940 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3951 /* Reset pointers if this was really a ,n for a branch instruction. */
3952 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3958 /* Parse a negated addition completer returning the number
3959 (for encoding in instrutions) of the given completer.
3961 ISBRANCH specifies whether or not this is parsing a condition
3962 completer for a branch (vs a nullification completer for a
3963 computational instruction. */
3966 pa_parse_neg_add_cmpltr (s
, isbranch
)
3971 char *name
= *s
+ 1;
3979 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3983 if (strcasecmp (name
, "tr") == 0)
3987 else if (strcmp (name
, "<>") == 0)
3991 else if (strcmp (name
, ">=") == 0)
3995 else if (strcmp (name
, ">") == 0)
3999 else if (strcasecmp (name
, "uv") == 0)
4003 else if (strcasecmp (name
, "vnz") == 0)
4007 else if (strcasecmp (name
, "nsv") == 0)
4011 else if (strcasecmp (name
, "ev") == 0)
4015 /* If we have something like addb,n then there is no condition
4017 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4028 /* Reset pointers if this was really a ,n for a branch instruction. */
4029 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4035 /* Handle a .BLOCK type pseudo-op. */
4043 unsigned int temp_size
;
4046 temp_size
= get_absolute_expression ();
4048 /* Always fill with zeros, that's what the HP assembler does. */
4051 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4052 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4053 bzero (p
, temp_size
);
4055 /* Convert 2 bytes at a time. */
4057 for (i
= 0; i
< temp_size
; i
+= 2)
4059 md_number_to_chars (p
+ i
,
4061 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4064 pa_undefine_label ();
4065 demand_empty_rest_of_line ();
4068 /* Handle a .CALL pseudo-op. This involves storing away information
4069 about where arguments are to be found so the linker can detect
4070 (and correct) argument location mismatches between caller and callee. */
4076 pa_call_args (&last_call_desc
);
4077 demand_empty_rest_of_line ();
4080 /* Do the dirty work of building a call descriptor which describes
4081 where the caller placed arguments to a function call. */
4084 pa_call_args (call_desc
)
4085 struct call_desc
*call_desc
;
4088 unsigned int temp
, arg_reloc
;
4090 while (!is_end_of_statement ())
4092 name
= input_line_pointer
;
4093 c
= get_symbol_end ();
4094 /* Process a source argument. */
4095 if ((strncasecmp (name
, "argw", 4) == 0))
4097 temp
= atoi (name
+ 4);
4098 p
= input_line_pointer
;
4100 input_line_pointer
++;
4101 name
= input_line_pointer
;
4102 c
= get_symbol_end ();
4103 arg_reloc
= pa_build_arg_reloc (name
);
4104 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4106 /* Process a return value. */
4107 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4109 p
= input_line_pointer
;
4111 input_line_pointer
++;
4112 name
= input_line_pointer
;
4113 c
= get_symbol_end ();
4114 arg_reloc
= pa_build_arg_reloc (name
);
4115 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4119 as_bad ("Invalid .CALL argument: %s", name
);
4121 p
= input_line_pointer
;
4123 if (!is_end_of_statement ())
4124 input_line_pointer
++;
4128 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4131 is_same_frag (frag1
, frag2
)
4138 else if (frag2
== NULL
)
4140 else if (frag1
== frag2
)
4142 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4143 return (is_same_frag (frag1
, frag2
->fr_next
));
4149 /* Build an entry in the UNWIND subspace from the given function
4150 attributes in CALL_INFO. This is not needed for SOM as using
4151 R_ENTRY and R_EXIT relocations allow the linker to handle building
4152 of the unwind spaces. */
4155 pa_build_unwind_subspace (call_info
)
4156 struct call_info
*call_info
;
4159 asection
*seg
, *save_seg
;
4160 subsegT subseg
, save_subseg
;
4164 /* Get into the right seg/subseg. This may involve creating
4165 the seg the first time through. Make sure to have the
4166 old seg/subseg so that we can reset things when we are done. */
4167 subseg
= SUBSEG_UNWIND
;
4168 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4169 if (seg
== ASEC_NULL
)
4171 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4172 bfd_set_section_flags (stdoutput
, seg
,
4173 SEC_READONLY
| SEC_HAS_CONTENTS
4174 | SEC_LOAD
| SEC_RELOC
);
4178 save_subseg
= now_subseg
;
4179 subseg_set (seg
, subseg
);
4182 /* Get some space to hold relocation information for the unwind
4186 /* Relocation info. for start offset of the function. */
4187 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4188 call_info
->start_symbol
, (offsetT
) 0,
4189 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4194 /* Relocation info. for end offset of the function. */
4195 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4196 call_info
->end_symbol
, (offsetT
) 0,
4197 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4201 unwind
= (char *) &call_info
->ci_unwind
;
4202 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4206 FRAG_APPEND_1_CHAR (c
);
4210 /* Return back to the original segment/subsegment. */
4211 subseg_set (save_seg
, save_subseg
);
4215 /* Process a .CALLINFO pseudo-op. This information is used later
4216 to build unwind descriptors and maybe one day to support
4217 .ENTER and .LEAVE. */
4220 pa_callinfo (unused
)
4226 /* .CALLINFO must appear within a procedure definition. */
4227 if (!within_procedure
)
4228 as_bad (".callinfo is not within a procedure definition");
4230 /* Mark the fact that we found the .CALLINFO for the
4231 current procedure. */
4232 callinfo_found
= TRUE
;
4234 /* Iterate over the .CALLINFO arguments. */
4235 while (!is_end_of_statement ())
4237 name
= input_line_pointer
;
4238 c
= get_symbol_end ();
4239 /* Frame size specification. */
4240 if ((strncasecmp (name
, "frame", 5) == 0))
4242 p
= input_line_pointer
;
4244 input_line_pointer
++;
4245 temp
= get_absolute_expression ();
4246 if ((temp
& 0x3) != 0)
4248 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4252 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4253 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4256 /* Entry register (GR, GR and SR) specifications. */
4257 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4259 p
= input_line_pointer
;
4261 input_line_pointer
++;
4262 temp
= get_absolute_expression ();
4263 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4264 even though %r19 is caller saved. I think this is a bug in
4265 the HP assembler, and we are not going to emulate it. */
4266 if (temp
< 3 || temp
> 18)
4267 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4268 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4270 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4272 p
= input_line_pointer
;
4274 input_line_pointer
++;
4275 temp
= get_absolute_expression ();
4276 /* Similarly the HP assembler takes 31 as the high bound even
4277 though %fr21 is the last callee saved floating point register. */
4278 if (temp
< 12 || temp
> 21)
4279 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4280 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4282 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4284 p
= input_line_pointer
;
4286 input_line_pointer
++;
4287 temp
= get_absolute_expression ();
4289 as_bad ("Value for ENTRY_SR must be 3\n");
4291 /* Note whether or not this function performs any calls. */
4292 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4293 (strncasecmp (name
, "caller", 6) == 0))
4295 p
= input_line_pointer
;
4298 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4300 p
= input_line_pointer
;
4303 /* Should RP be saved into the stack. */
4304 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4306 p
= input_line_pointer
;
4308 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4310 /* Likewise for SP. */
4311 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4313 p
= input_line_pointer
;
4315 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4317 /* Is this an unwindable procedure. If so mark it so
4318 in the unwind descriptor. */
4319 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4321 p
= input_line_pointer
;
4323 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4325 /* Is this an interrupt routine. If so mark it in the
4326 unwind descriptor. */
4327 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4329 p
= input_line_pointer
;
4331 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4333 /* Is this a millicode routine. "millicode" isn't in my
4334 assembler manual, but my copy is old. The HP assembler
4335 accepts it, and there's a place in the unwind descriptor
4336 to drop the information, so we'll accept it too. */
4337 else if ((strncasecmp (name
, "millicode", 9) == 0))
4339 p
= input_line_pointer
;
4341 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4345 as_bad ("Invalid .CALLINFO argument: %s", name
);
4346 *input_line_pointer
= c
;
4348 if (!is_end_of_statement ())
4349 input_line_pointer
++;
4352 demand_empty_rest_of_line ();
4355 /* Switch into the code subspace. */
4361 sd_chain_struct
*sdchain
;
4363 /* First time through it might be necessary to create the
4365 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4367 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4368 pa_def_spaces
[0].spnum
,
4369 pa_def_spaces
[0].loadable
,
4370 pa_def_spaces
[0].defined
,
4371 pa_def_spaces
[0].private,
4372 pa_def_spaces
[0].sort
,
4373 pa_def_spaces
[0].segment
, 0);
4376 SPACE_DEFINED (sdchain
) = 1;
4377 subseg_set (text_section
, SUBSEG_CODE
);
4378 demand_empty_rest_of_line ();
4381 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4382 the .comm pseudo-op has the following symtax:
4384 <label> .comm <length>
4386 where <label> is optional and is a symbol whose address will be the start of
4387 a block of memory <length> bytes long. <length> must be an absolute
4388 expression. <length> bytes will be allocated in the current space
4397 label_symbol_struct
*label_symbol
= pa_get_label ();
4400 symbol
= label_symbol
->lss_label
;
4405 size
= get_absolute_expression ();
4409 /* It is incorrect to check S_IS_DEFINED at this point as
4410 the symbol will *always* be defined. FIXME. How to
4411 correctly determine when this label really as been
4413 if (S_GET_VALUE (symbol
))
4415 if (S_GET_VALUE (symbol
) != size
)
4417 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4418 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4424 S_SET_VALUE (symbol
, size
);
4425 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4426 S_SET_EXTERNAL (symbol
);
4429 demand_empty_rest_of_line ();
4432 /* Process a .END pseudo-op. */
4438 demand_empty_rest_of_line ();
4441 /* Process a .ENTER pseudo-op. This is not supported. */
4449 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4455 if (!within_procedure
)
4456 as_bad ("Misplaced .entry. Ignored.");
4459 if (!callinfo_found
)
4460 as_bad ("Missing .callinfo.");
4462 demand_empty_rest_of_line ();
4463 within_entry_exit
= TRUE
;
4466 /* SOM defers building of unwind descriptors until the link phase.
4467 The assembler is responsible for creating an R_ENTRY relocation
4468 to mark the beginning of a region and hold the unwind bits, and
4469 for creating an R_EXIT relocation to mark the end of the region.
4471 FIXME. ELF should be using the same conventions! The problem
4472 is an unwind requires too much relocation space. Hmmm. Maybe
4473 if we split the unwind bits up between the relocations which
4474 denote the entry and exit points. */
4475 if (last_call_info
->start_symbol
!= NULL
)
4477 char *where
= frag_more (0);
4479 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4480 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4481 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4482 (char *) &last_call_info
->ci_unwind
.descriptor
);
4487 /* Handle a .EQU pseudo-op. */
4493 label_symbol_struct
*label_symbol
= pa_get_label ();
4498 symbol
= label_symbol
->lss_label
;
4500 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4502 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4503 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4508 as_bad (".REG must use a label");
4510 as_bad (".EQU must use a label");
4513 pa_undefine_label ();
4514 demand_empty_rest_of_line ();
4517 /* Helper function. Does processing for the end of a function. This
4518 usually involves creating some relocations or building special
4519 symbols to mark the end of the function. */
4526 where
= frag_more (0);
4529 /* Mark the end of the function, stuff away the location of the frag
4530 for the end of the function, and finally call pa_build_unwind_subspace
4531 to add an entry in the unwind table. */
4532 hppa_elf_mark_end_of_function ();
4533 pa_build_unwind_subspace (last_call_info
);
4535 /* SOM defers building of unwind descriptors until the link phase.
4536 The assembler is responsible for creating an R_ENTRY relocation
4537 to mark the beginning of a region and hold the unwind bits, and
4538 for creating an R_EXIT relocation to mark the end of the region.
4540 FIXME. ELF should be using the same conventions! The problem
4541 is an unwind requires too much relocation space. Hmmm. Maybe
4542 if we split the unwind bits up between the relocations which
4543 denote the entry and exit points. */
4544 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4545 last_call_info
->start_symbol
, (offsetT
) 0,
4546 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4550 /* Process a .EXIT pseudo-op. */
4556 if (!within_procedure
)
4557 as_bad (".EXIT must appear within a procedure");
4560 if (!callinfo_found
)
4561 as_bad ("Missing .callinfo");
4564 if (!within_entry_exit
)
4565 as_bad ("No .ENTRY for this .EXIT");
4568 within_entry_exit
= FALSE
;
4573 demand_empty_rest_of_line ();
4576 /* Process a .EXPORT directive. This makes functions external
4577 and provides information such as argument relocation entries
4587 name
= input_line_pointer
;
4588 c
= get_symbol_end ();
4589 /* Make sure the given symbol exists. */
4590 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4592 as_bad ("Cannot define export symbol: %s\n", name
);
4593 p
= input_line_pointer
;
4595 input_line_pointer
++;
4599 /* OK. Set the external bits and process argument relocations. */
4600 S_SET_EXTERNAL (symbol
);
4601 p
= input_line_pointer
;
4603 if (!is_end_of_statement ())
4605 input_line_pointer
++;
4606 pa_type_args (symbol
, 1);
4610 demand_empty_rest_of_line ();
4613 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4616 pa_type_args (symbolP
, is_export
)
4621 unsigned int temp
, arg_reloc
;
4622 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4623 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4625 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4628 input_line_pointer
+= 8;
4629 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4630 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4631 type
= SYMBOL_TYPE_ABSOLUTE
;
4633 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4635 input_line_pointer
+= 4;
4636 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4637 instead one should be IMPORTing/EXPORTing ENTRY types.
4639 Complain if one tries to EXPORT a CODE type since that's never
4640 done. Both GCC and HP C still try to IMPORT CODE types, so
4641 silently fix them to be ENTRY types. */
4642 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4645 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4647 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4648 type
= SYMBOL_TYPE_ENTRY
;
4652 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4653 type
= SYMBOL_TYPE_CODE
;
4656 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4658 input_line_pointer
+= 4;
4659 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4660 type
= SYMBOL_TYPE_DATA
;
4662 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4664 input_line_pointer
+= 5;
4665 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4666 type
= SYMBOL_TYPE_ENTRY
;
4668 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4670 input_line_pointer
+= 9;
4671 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4672 type
= SYMBOL_TYPE_MILLICODE
;
4674 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4676 input_line_pointer
+= 6;
4677 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4678 type
= SYMBOL_TYPE_PLABEL
;
4680 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4682 input_line_pointer
+= 8;
4683 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4684 type
= SYMBOL_TYPE_PRI_PROG
;
4686 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4688 input_line_pointer
+= 8;
4689 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4690 type
= SYMBOL_TYPE_SEC_PROG
;
4693 /* SOM requires much more information about symbol types
4694 than BFD understands. This is how we get this information
4695 to the SOM BFD backend. */
4696 #ifdef obj_set_symbol_type
4697 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4700 /* Now that the type of the exported symbol has been handled,
4701 handle any argument relocation information. */
4702 while (!is_end_of_statement ())
4704 if (*input_line_pointer
== ',')
4705 input_line_pointer
++;
4706 name
= input_line_pointer
;
4707 c
= get_symbol_end ();
4708 /* Argument sources. */
4709 if ((strncasecmp (name
, "argw", 4) == 0))
4711 p
= input_line_pointer
;
4713 input_line_pointer
++;
4714 temp
= atoi (name
+ 4);
4715 name
= input_line_pointer
;
4716 c
= get_symbol_end ();
4717 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4718 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4719 *input_line_pointer
= c
;
4721 /* The return value. */
4722 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4724 p
= input_line_pointer
;
4726 input_line_pointer
++;
4727 name
= input_line_pointer
;
4728 c
= get_symbol_end ();
4729 arg_reloc
= pa_build_arg_reloc (name
);
4730 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4731 *input_line_pointer
= c
;
4733 /* Privelege level. */
4734 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4736 p
= input_line_pointer
;
4738 input_line_pointer
++;
4739 temp
= atoi (input_line_pointer
);
4740 c
= get_symbol_end ();
4741 *input_line_pointer
= c
;
4745 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4746 p
= input_line_pointer
;
4749 if (!is_end_of_statement ())
4750 input_line_pointer
++;
4754 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4755 assembly file must either be defined in the assembly file, or
4756 explicitly IMPORTED from another. */
4765 name
= input_line_pointer
;
4766 c
= get_symbol_end ();
4768 symbol
= symbol_find (name
);
4769 /* Ugh. We might be importing a symbol defined earlier in the file,
4770 in which case all the code below will really screw things up
4771 (set the wrong segment, symbol flags & type, etc). */
4772 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4774 symbol
= symbol_find_or_make (name
);
4775 p
= input_line_pointer
;
4778 if (!is_end_of_statement ())
4780 input_line_pointer
++;
4781 pa_type_args (symbol
, 0);
4785 /* Sigh. To be compatable with the HP assembler and to help
4786 poorly written assembly code, we assign a type based on
4787 the the current segment. Note only BSF_FUNCTION really
4788 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4789 if (now_seg
== text_section
)
4790 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4792 /* If the section is undefined, then the symbol is undefined
4793 Since this is an import, leave the section undefined. */
4794 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4799 /* The symbol was already defined. Just eat everything up to
4800 the end of the current statement. */
4801 while (!is_end_of_statement ())
4802 input_line_pointer
++;
4805 demand_empty_rest_of_line ();
4808 /* Handle a .LABEL pseudo-op. */
4816 name
= input_line_pointer
;
4817 c
= get_symbol_end ();
4819 if (strlen (name
) > 0)
4822 p
= input_line_pointer
;
4827 as_warn ("Missing label name on .LABEL");
4830 if (!is_end_of_statement ())
4832 as_warn ("extra .LABEL arguments ignored.");
4833 ignore_rest_of_line ();
4835 demand_empty_rest_of_line ();
4838 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4847 /* Handle a .ORIGIN pseudo-op. */
4854 pa_undefine_label ();
4857 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4858 is for static functions. FIXME. Should share more code with .EXPORT. */
4867 name
= input_line_pointer
;
4868 c
= get_symbol_end ();
4870 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4872 as_bad ("Cannot define static symbol: %s\n", name
);
4873 p
= input_line_pointer
;
4875 input_line_pointer
++;
4879 S_CLEAR_EXTERNAL (symbol
);
4880 p
= input_line_pointer
;
4882 if (!is_end_of_statement ())
4884 input_line_pointer
++;
4885 pa_type_args (symbol
, 0);
4889 demand_empty_rest_of_line ();
4892 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4893 of a procedure from a syntatical point of view. */
4899 struct call_info
*call_info
;
4902 if (within_procedure
)
4903 as_fatal ("Nested procedures");
4905 /* Reset global variables for new procedure. */
4906 callinfo_found
= FALSE
;
4907 within_procedure
= TRUE
;
4910 Enabling
this code creates severe problems with GDB
. It appears as
if
4911 inserting linker stubs between functions within a single
.o makes GDB
4914 /* Create a new CODE subspace for each procedure if we are not
4915 using space/subspace aliases. */
4916 if (!USE_ALIASES
&& call_info_root
!= NULL
)
4918 /* Force creation of a new $CODE$ subspace; inherit attributes from
4919 the first $CODE$ subspace. */
4920 seg
= subseg_force_new ("$CODE$", 0);
4922 /* Now set the flags. */
4923 bfd_set_section_flags (stdoutput
, seg
,
4924 bfd_get_section_flags (abfd
, text_section
));
4926 /* Record any alignment request for this section. */
4927 record_alignment (seg
,
4928 bfd_get_section_alignment (stdoutput
, text_section
));
4930 /* Change the "text_section" to be our new $CODE$ subspace. */
4932 subseg_set (text_section
, 0);
4934 #ifdef obj_set_subsection_attributes
4935 /* Need a way to inherit the the access bits, sort key and quadrant
4936 from the first $CODE$ subspace. FIXME. */
4937 obj_set_subsection_attributes (seg
, current_space
->sd_seg
, 0x2c, 24, 0);
4942 /* Create another call_info structure. */
4943 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4946 as_fatal ("Cannot allocate unwind descriptor\n");
4948 bzero (call_info
, sizeof (struct call_info
));
4950 call_info
->ci_next
= NULL
;
4952 if (call_info_root
== NULL
)
4954 call_info_root
= call_info
;
4955 last_call_info
= call_info
;
4959 last_call_info
->ci_next
= call_info
;
4960 last_call_info
= call_info
;
4963 /* set up defaults on call_info structure */
4965 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4966 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4967 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4969 /* If we got a .PROC pseudo-op, we know that the function is defined
4970 locally. Make sure it gets into the symbol table. */
4972 label_symbol_struct
*label_symbol
= pa_get_label ();
4976 if (label_symbol
->lss_label
)
4978 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4979 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4983 /* The label was defined in a different segment. Fix that
4984 along with the value and associated fragment. */
4985 S_SET_SEGMENT (last_call_info
->start_symbol
, now_seg
);
4986 S_SET_VALUE (last_call_info
->start_symbol
,
4987 ((char*)obstack_next_free (&frags
)
4988 - frag_now
->fr_literal
));
4989 last_call_info
->start_symbol
->sy_frag
= frag_now
;
4994 as_bad ("Missing function name for .PROC (corrupted label chain)");
4997 last_call_info
->start_symbol
= NULL
;
5000 demand_empty_rest_of_line ();
5003 /* Process the syntatical end of a procedure. Make sure all the
5004 appropriate pseudo-ops were found within the procedure. */
5011 if (last_call_info
->start_symbol
== NULL
)
5012 as_bad ("Missing function name for .PROC");
5014 if (!within_procedure
)
5015 as_bad ("misplaced .procend");
5017 if (!callinfo_found
)
5018 as_bad ("Missing .callinfo for this procedure");
5020 if (within_entry_exit
)
5021 as_bad ("Missing .EXIT for a .ENTRY");
5024 /* ELF needs to mark the end of each function so that it can compute
5025 the size of the function (apparently its needed in the symbol table. */
5026 hppa_elf_mark_end_of_function ();
5029 within_procedure
= FALSE
;
5030 demand_empty_rest_of_line ();
5031 pa_undefine_label ();
5034 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5035 then create a new space entry to hold the information specified
5036 by the parameters to the .SPACE directive. */
5038 static sd_chain_struct
*
5039 pa_parse_space_stmt (space_name
, create_flag
)
5043 char *name
, *ptemp
, c
;
5044 char loadable
, defined
, private, sort
;
5046 asection
*seg
= NULL
;
5047 sd_chain_struct
*space
;
5049 /* load default values */
5055 if (strcmp (space_name
, "$TEXT$") == 0)
5057 seg
= pa_def_spaces
[0].segment
;
5058 sort
= pa_def_spaces
[0].sort
;
5060 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5062 seg
= pa_def_spaces
[1].segment
;
5063 sort
= pa_def_spaces
[1].sort
;
5066 if (!is_end_of_statement ())
5068 print_errors
= FALSE
;
5069 ptemp
= input_line_pointer
+ 1;
5070 /* First see if the space was specified as a number rather than
5071 as a name. According to the PA assembly manual the rest of
5072 the line should be ignored. */
5073 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5074 input_line_pointer
= ptemp
;
5077 while (!is_end_of_statement ())
5079 input_line_pointer
++;
5080 name
= input_line_pointer
;
5081 c
= get_symbol_end ();
5082 if ((strncasecmp (name
, "spnum", 5) == 0))
5084 *input_line_pointer
= c
;
5085 input_line_pointer
++;
5086 spnum
= get_absolute_expression ();
5088 else if ((strncasecmp (name
, "sort", 4) == 0))
5090 *input_line_pointer
= c
;
5091 input_line_pointer
++;
5092 sort
= get_absolute_expression ();
5094 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5096 *input_line_pointer
= c
;
5099 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5101 *input_line_pointer
= c
;
5104 else if ((strncasecmp (name
, "private", 7) == 0))
5106 *input_line_pointer
= c
;
5111 as_bad ("Invalid .SPACE argument");
5112 *input_line_pointer
= c
;
5113 if (!is_end_of_statement ())
5114 input_line_pointer
++;
5118 print_errors
= TRUE
;
5121 if (create_flag
&& seg
== NULL
)
5122 seg
= subseg_new (space_name
, 0);
5124 /* If create_flag is nonzero, then create the new space with
5125 the attributes computed above. Else set the values in
5126 an already existing space -- this can only happen for
5127 the first occurence of a built-in space. */
5129 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5130 private, sort
, seg
, 1);
5133 space
= is_defined_space (space_name
);
5134 SPACE_SPNUM (space
) = spnum
;
5135 SPACE_DEFINED (space
) = defined
& 1;
5136 SPACE_USER_DEFINED (space
) = 1;
5137 space
->sd_seg
= seg
;
5140 #ifdef obj_set_section_attributes
5141 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5147 /* Handle a .SPACE pseudo-op; this switches the current space to the
5148 given space, creating the new space if necessary. */
5154 char *name
, c
, *space_name
, *save_s
;
5156 sd_chain_struct
*sd_chain
;
5158 if (within_procedure
)
5160 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5161 ignore_rest_of_line ();
5165 /* Check for some of the predefined spaces. FIXME: most of the code
5166 below is repeated several times, can we extract the common parts
5167 and place them into a subroutine or something similar? */
5168 /* FIXME Is this (and the next IF stmt) really right?
5169 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5170 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5172 input_line_pointer
+= 6;
5173 sd_chain
= is_defined_space ("$TEXT$");
5174 if (sd_chain
== NULL
)
5175 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5176 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5177 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5179 current_space
= sd_chain
;
5180 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5182 = pa_subsegment_to_subspace (text_section
,
5183 sd_chain
->sd_last_subseg
);
5184 demand_empty_rest_of_line ();
5187 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5189 input_line_pointer
+= 9;
5190 sd_chain
= is_defined_space ("$PRIVATE$");
5191 if (sd_chain
== NULL
)
5192 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5193 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5194 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5196 current_space
= sd_chain
;
5197 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5199 = pa_subsegment_to_subspace (data_section
,
5200 sd_chain
->sd_last_subseg
);
5201 demand_empty_rest_of_line ();
5204 if (!strncasecmp (input_line_pointer
,
5205 GDB_DEBUG_SPACE_NAME
,
5206 strlen (GDB_DEBUG_SPACE_NAME
)))
5208 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5209 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5210 if (sd_chain
== NULL
)
5211 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5212 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5213 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5215 current_space
= sd_chain
;
5218 asection
*gdb_section
5219 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5221 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5223 = pa_subsegment_to_subspace (gdb_section
,
5224 sd_chain
->sd_last_subseg
);
5226 demand_empty_rest_of_line ();
5230 /* It could be a space specified by number. */
5232 save_s
= input_line_pointer
;
5233 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5235 if (sd_chain
= pa_find_space_by_number (temp
))
5237 current_space
= sd_chain
;
5239 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5241 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5242 sd_chain
->sd_last_subseg
);
5243 demand_empty_rest_of_line ();
5248 /* Not a number, attempt to create a new space. */
5250 input_line_pointer
= save_s
;
5251 name
= input_line_pointer
;
5252 c
= get_symbol_end ();
5253 space_name
= xmalloc (strlen (name
) + 1);
5254 strcpy (space_name
, name
);
5255 *input_line_pointer
= c
;
5257 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5258 current_space
= sd_chain
;
5260 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5261 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5262 sd_chain
->sd_last_subseg
);
5263 demand_empty_rest_of_line ();
5267 /* Switch to a new space. (I think). FIXME. */
5276 sd_chain_struct
*space
;
5278 name
= input_line_pointer
;
5279 c
= get_symbol_end ();
5280 space
= is_defined_space (name
);
5284 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5287 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5289 *input_line_pointer
= c
;
5290 demand_empty_rest_of_line ();
5293 /* If VALUE is an exact power of two between zero and 2^31, then
5294 return log2 (VALUE). Else return -1. */
5302 while ((1 << shift
) != value
&& shift
< 32)
5311 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5312 given subspace, creating the new subspace if necessary.
5314 FIXME. Should mirror pa_space more closely, in particular how
5315 they're broken up into subroutines. */
5318 pa_subspace (unused
)
5321 char *name
, *ss_name
, *alias
, c
;
5322 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5323 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5324 sd_chain_struct
*space
;
5325 ssd_chain_struct
*ssd
;
5328 if (within_procedure
)
5330 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5331 ignore_rest_of_line ();
5335 name
= input_line_pointer
;
5336 c
= get_symbol_end ();
5337 ss_name
= xmalloc (strlen (name
) + 1);
5338 strcpy (ss_name
, name
);
5339 *input_line_pointer
= c
;
5341 /* Load default values. */
5354 space
= current_space
;
5355 ssd
= is_defined_subspace (ss_name
);
5356 /* Allow user to override the builtin attributes of subspaces. But
5357 only allow the attributes to be changed once! */
5358 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5360 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5361 if (!is_end_of_statement ())
5362 as_warn ("Parameters of an existing subspace can\'t be modified");
5363 demand_empty_rest_of_line ();
5368 /* A new subspace. Load default values if it matches one of
5369 the builtin subspaces. */
5371 while (pa_def_subspaces
[i
].name
)
5373 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5375 loadable
= pa_def_subspaces
[i
].loadable
;
5376 common
= pa_def_subspaces
[i
].common
;
5377 dup_common
= pa_def_subspaces
[i
].dup_common
;
5378 code_only
= pa_def_subspaces
[i
].code_only
;
5379 zero
= pa_def_subspaces
[i
].zero
;
5380 space_index
= pa_def_subspaces
[i
].space_index
;
5381 alignment
= pa_def_subspaces
[i
].alignment
;
5382 quadrant
= pa_def_subspaces
[i
].quadrant
;
5383 access
= pa_def_subspaces
[i
].access
;
5384 sort
= pa_def_subspaces
[i
].sort
;
5385 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5386 alias
= pa_def_subspaces
[i
].alias
;
5393 /* We should be working with a new subspace now. Fill in
5394 any information as specified by the user. */
5395 if (!is_end_of_statement ())
5397 input_line_pointer
++;
5398 while (!is_end_of_statement ())
5400 name
= input_line_pointer
;
5401 c
= get_symbol_end ();
5402 if ((strncasecmp (name
, "quad", 4) == 0))
5404 *input_line_pointer
= c
;
5405 input_line_pointer
++;
5406 quadrant
= get_absolute_expression ();
5408 else if ((strncasecmp (name
, "align", 5) == 0))
5410 *input_line_pointer
= c
;
5411 input_line_pointer
++;
5412 alignment
= get_absolute_expression ();
5413 if (log2 (alignment
) == -1)
5415 as_bad ("Alignment must be a power of 2");
5419 else if ((strncasecmp (name
, "access", 6) == 0))
5421 *input_line_pointer
= c
;
5422 input_line_pointer
++;
5423 access
= get_absolute_expression ();
5425 else if ((strncasecmp (name
, "sort", 4) == 0))
5427 *input_line_pointer
= c
;
5428 input_line_pointer
++;
5429 sort
= get_absolute_expression ();
5431 else if ((strncasecmp (name
, "code_only", 9) == 0))
5433 *input_line_pointer
= c
;
5436 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5438 *input_line_pointer
= c
;
5441 else if ((strncasecmp (name
, "common", 6) == 0))
5443 *input_line_pointer
= c
;
5446 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5448 *input_line_pointer
= c
;
5451 else if ((strncasecmp (name
, "zero", 4) == 0))
5453 *input_line_pointer
= c
;
5456 else if ((strncasecmp (name
, "first", 5) == 0))
5457 as_bad ("FIRST not supported as a .SUBSPACE argument");
5459 as_bad ("Invalid .SUBSPACE argument");
5460 if (!is_end_of_statement ())
5461 input_line_pointer
++;
5465 /* Compute a reasonable set of BFD flags based on the information
5466 in the .subspace directive. */
5467 applicable
= bfd_applicable_section_flags (stdoutput
);
5470 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5473 if (common
|| dup_common
)
5474 flags
|= SEC_IS_COMMON
;
5476 /* This is a zero-filled subspace (eg BSS). */
5480 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5481 applicable
&= flags
;
5483 /* If this is an existing subspace, then we want to use the
5484 segment already associated with the subspace.
5486 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5487 lots of sections. It might be a problem in the PA ELF
5488 code, I do not know yet. For now avoid creating anything
5489 but the "standard" sections for ELF. */
5491 section
= ssd
->ssd_seg
;
5493 section
= subseg_new (alias
, 0);
5494 else if (!alias
&& USE_ALIASES
)
5496 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5497 demand_empty_rest_of_line ();
5501 section
= subseg_new (ss_name
, 0);
5503 /* Now set the flags. */
5504 bfd_set_section_flags (stdoutput
, section
, applicable
);
5506 /* Record any alignment request for this section. */
5507 record_alignment (section
, log2 (alignment
));
5509 /* Set the starting offset for this section. */
5510 bfd_set_section_vma (stdoutput
, section
,
5511 pa_subspace_start (space
, quadrant
));
5513 /* Now that all the flags are set, update an existing subspace,
5514 or create a new one. */
5517 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5518 code_only
, common
, dup_common
,
5519 sort
, zero
, access
, space_index
,
5520 alignment
, quadrant
,
5523 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5525 dup_common
, zero
, sort
,
5526 access
, space_index
,
5527 alignment
, quadrant
, section
);
5529 demand_empty_rest_of_line ();
5530 current_subspace
->ssd_seg
= section
;
5531 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5533 SUBSPACE_DEFINED (current_subspace
) = 1;
5537 /* Create default space and subspace dictionaries. */
5544 space_dict_root
= NULL
;
5545 space_dict_last
= NULL
;
5548 while (pa_def_spaces
[i
].name
)
5552 /* Pick the right name to use for the new section. */
5553 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5554 name
= pa_def_spaces
[i
].alias
;
5556 name
= pa_def_spaces
[i
].name
;
5558 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5559 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5560 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5561 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5562 pa_def_spaces
[i
].segment
, 0);
5567 while (pa_def_subspaces
[i
].name
)
5570 int applicable
, subsegment
;
5571 asection
*segment
= NULL
;
5572 sd_chain_struct
*space
;
5574 /* Pick the right name for the new section and pick the right
5575 subsegment number. */
5576 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5578 name
= pa_def_subspaces
[i
].alias
;
5579 subsegment
= pa_def_subspaces
[i
].subsegment
;
5583 name
= pa_def_subspaces
[i
].name
;
5587 /* Create the new section. */
5588 segment
= subseg_new (name
, subsegment
);
5591 /* For SOM we want to replace the standard .text, .data, and .bss
5592 sections with our own. */
5593 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5595 text_section
= segment
;
5596 applicable
= bfd_applicable_section_flags (stdoutput
);
5597 bfd_set_section_flags (stdoutput
, text_section
,
5598 applicable
& (SEC_ALLOC
| SEC_LOAD
5599 | SEC_RELOC
| SEC_CODE
5601 | SEC_HAS_CONTENTS
));
5603 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5605 data_section
= segment
;
5606 applicable
= bfd_applicable_section_flags (stdoutput
);
5607 bfd_set_section_flags (stdoutput
, data_section
,
5608 applicable
& (SEC_ALLOC
| SEC_LOAD
5610 | SEC_HAS_CONTENTS
));
5614 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5616 bss_section
= segment
;
5617 applicable
= bfd_applicable_section_flags (stdoutput
);
5618 bfd_set_section_flags (stdoutput
, bss_section
,
5619 applicable
& SEC_ALLOC
);
5622 /* Find the space associated with this subspace. */
5623 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5624 def_space_index
].segment
);
5627 as_fatal ("Internal error: Unable to find containing space for %s.",
5628 pa_def_subspaces
[i
].name
);
5631 create_new_subspace (space
, name
,
5632 pa_def_subspaces
[i
].loadable
,
5633 pa_def_subspaces
[i
].code_only
,
5634 pa_def_subspaces
[i
].common
,
5635 pa_def_subspaces
[i
].dup_common
,
5636 pa_def_subspaces
[i
].zero
,
5637 pa_def_subspaces
[i
].sort
,
5638 pa_def_subspaces
[i
].access
,
5639 pa_def_subspaces
[i
].space_index
,
5640 pa_def_subspaces
[i
].alignment
,
5641 pa_def_subspaces
[i
].quadrant
,
5649 /* Create a new space NAME, with the appropriate flags as defined
5650 by the given parameters. */
5652 static sd_chain_struct
*
5653 create_new_space (name
, spnum
, loadable
, defined
, private,
5654 sort
, seg
, user_defined
)
5664 sd_chain_struct
*chain_entry
;
5666 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5668 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5671 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5672 strcpy (SPACE_NAME (chain_entry
), name
);
5673 SPACE_DEFINED (chain_entry
) = defined
;
5674 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5675 SPACE_SPNUM (chain_entry
) = spnum
;
5677 chain_entry
->sd_seg
= seg
;
5678 chain_entry
->sd_last_subseg
= -1;
5679 chain_entry
->sd_next
= NULL
;
5681 /* Find spot for the new space based on its sort key. */
5682 if (!space_dict_last
)
5683 space_dict_last
= chain_entry
;
5685 if (space_dict_root
== NULL
)
5686 space_dict_root
= chain_entry
;
5689 sd_chain_struct
*chain_pointer
;
5690 sd_chain_struct
*prev_chain_pointer
;
5692 chain_pointer
= space_dict_root
;
5693 prev_chain_pointer
= NULL
;
5695 while (chain_pointer
)
5697 prev_chain_pointer
= chain_pointer
;
5698 chain_pointer
= chain_pointer
->sd_next
;
5701 /* At this point we've found the correct place to add the new
5702 entry. So add it and update the linked lists as appropriate. */
5703 if (prev_chain_pointer
)
5705 chain_entry
->sd_next
= chain_pointer
;
5706 prev_chain_pointer
->sd_next
= chain_entry
;
5710 space_dict_root
= chain_entry
;
5711 chain_entry
->sd_next
= chain_pointer
;
5714 if (chain_entry
->sd_next
== NULL
)
5715 space_dict_last
= chain_entry
;
5718 /* This is here to catch predefined spaces which do not get
5719 modified by the user's input. Another call is found at
5720 the bottom of pa_parse_space_stmt to handle cases where
5721 the user modifies a predefined space. */
5722 #ifdef obj_set_section_attributes
5723 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5729 /* Create a new subspace NAME, with the appropriate flags as defined
5730 by the given parameters.
5732 Add the new subspace to the subspace dictionary chain in numerical
5733 order as defined by the SORT entries. */
5735 static ssd_chain_struct
*
5736 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5737 dup_common
, is_zero
, sort
, access
, space_index
,
5738 alignment
, quadrant
, seg
)
5739 sd_chain_struct
*space
;
5741 int loadable
, code_only
, common
, dup_common
, is_zero
;
5749 ssd_chain_struct
*chain_entry
;
5751 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5753 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5755 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5756 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5758 /* Initialize subspace_defined. When we hit a .subspace directive
5759 we'll set it to 1 which "locks-in" the subspace attributes. */
5760 SUBSPACE_DEFINED (chain_entry
) = 0;
5762 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5763 chain_entry
->ssd_seg
= seg
;
5764 chain_entry
->ssd_next
= NULL
;
5766 /* Find spot for the new subspace based on its sort key. */
5767 if (space
->sd_subspaces
== NULL
)
5768 space
->sd_subspaces
= chain_entry
;
5771 ssd_chain_struct
*chain_pointer
;
5772 ssd_chain_struct
*prev_chain_pointer
;
5774 chain_pointer
= space
->sd_subspaces
;
5775 prev_chain_pointer
= NULL
;
5777 while (chain_pointer
)
5779 prev_chain_pointer
= chain_pointer
;
5780 chain_pointer
= chain_pointer
->ssd_next
;
5783 /* Now we have somewhere to put the new entry. Insert it and update
5785 if (prev_chain_pointer
)
5787 chain_entry
->ssd_next
= chain_pointer
;
5788 prev_chain_pointer
->ssd_next
= chain_entry
;
5792 space
->sd_subspaces
= chain_entry
;
5793 chain_entry
->ssd_next
= chain_pointer
;
5797 #ifdef obj_set_subsection_attributes
5798 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5805 /* Update the information for the given subspace based upon the
5806 various arguments. Return the modified subspace chain entry. */
5808 static ssd_chain_struct
*
5809 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5810 zero
, access
, space_index
, alignment
, quadrant
, section
)
5811 sd_chain_struct
*space
;
5825 ssd_chain_struct
*chain_entry
;
5827 chain_entry
= is_defined_subspace (name
);
5829 #ifdef obj_set_subsection_attributes
5830 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5837 /* Return the space chain entry for the space with the name NAME or
5838 NULL if no such space exists. */
5840 static sd_chain_struct
*
5841 is_defined_space (name
)
5844 sd_chain_struct
*chain_pointer
;
5846 for (chain_pointer
= space_dict_root
;
5848 chain_pointer
= chain_pointer
->sd_next
)
5850 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5851 return chain_pointer
;
5854 /* No mapping from segment to space was found. Return NULL. */
5858 /* Find and return the space associated with the given seg. If no mapping
5859 from the given seg to a space is found, then return NULL.
5861 Unlike subspaces, the number of spaces is not expected to grow much,
5862 so a linear exhaustive search is OK here. */
5864 static sd_chain_struct
*
5865 pa_segment_to_space (seg
)
5868 sd_chain_struct
*space_chain
;
5870 /* Walk through each space looking for the correct mapping. */
5871 for (space_chain
= space_dict_root
;
5873 space_chain
= space_chain
->sd_next
)
5875 if (space_chain
->sd_seg
== seg
)
5879 /* Mapping was not found. Return NULL. */
5883 /* Return the space chain entry for the subspace with the name NAME or
5884 NULL if no such subspace exists.
5886 Uses a linear search through all the spaces and subspaces, this may
5887 not be appropriate if we ever being placing each function in its
5890 static ssd_chain_struct
*
5891 is_defined_subspace (name
)
5894 sd_chain_struct
*space_chain
;
5895 ssd_chain_struct
*subspace_chain
;
5897 /* Walk through each space. */
5898 for (space_chain
= space_dict_root
;
5900 space_chain
= space_chain
->sd_next
)
5902 /* Walk through each subspace looking for a name which matches. */
5903 for (subspace_chain
= space_chain
->sd_subspaces
;
5905 subspace_chain
= subspace_chain
->ssd_next
)
5906 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5907 return subspace_chain
;
5910 /* Subspace wasn't found. Return NULL. */
5914 /* Find and return the subspace associated with the given seg. If no
5915 mapping from the given seg to a subspace is found, then return NULL.
5917 If we ever put each procedure/function within its own subspace
5918 (to make life easier on the compiler and linker), then this will have
5919 to become more efficient. */
5921 static ssd_chain_struct
*
5922 pa_subsegment_to_subspace (seg
, subseg
)
5926 sd_chain_struct
*space_chain
;
5927 ssd_chain_struct
*subspace_chain
;
5929 /* Walk through each space. */
5930 for (space_chain
= space_dict_root
;
5932 space_chain
= space_chain
->sd_next
)
5934 if (space_chain
->sd_seg
== seg
)
5936 /* Walk through each subspace within each space looking for
5937 the correct mapping. */
5938 for (subspace_chain
= space_chain
->sd_subspaces
;
5940 subspace_chain
= subspace_chain
->ssd_next
)
5941 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5942 return subspace_chain
;
5946 /* No mapping from subsegment to subspace found. Return NULL. */
5950 /* Given a number, try and find a space with the name number.
5952 Return a pointer to a space dictionary chain entry for the space
5953 that was found or NULL on failure. */
5955 static sd_chain_struct
*
5956 pa_find_space_by_number (number
)
5959 sd_chain_struct
*space_chain
;
5961 for (space_chain
= space_dict_root
;
5963 space_chain
= space_chain
->sd_next
)
5965 if (SPACE_SPNUM (space_chain
) == number
)
5969 /* No appropriate space found. Return NULL. */
5973 /* Return the starting address for the given subspace. If the starting
5974 address is unknown then return zero. */
5977 pa_subspace_start (space
, quadrant
)
5978 sd_chain_struct
*space
;
5981 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5982 is not correct for the PA OSF1 port. */
5983 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5985 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5991 /* FIXME. Needs documentation. */
5993 pa_next_subseg (space
)
5994 sd_chain_struct
*space
;
5997 space
->sd_last_subseg
++;
5998 return space
->sd_last_subseg
;
6001 /* Helper function for pa_stringer. Used to find the end of
6008 unsigned int c
= *s
& CHAR_MASK
;
6020 /* Handle a .STRING type pseudo-op. */
6023 pa_stringer (append_zero
)
6026 char *s
, num_buf
[4];
6030 /* Preprocess the string to handle PA-specific escape sequences.
6031 For example, \xDD where DD is a hexidecimal number should be
6032 changed to \OOO where OOO is an octal number. */
6034 /* Skip the opening quote. */
6035 s
= input_line_pointer
+ 1;
6037 while (is_a_char (c
= pa_stringer_aux (s
++)))
6044 /* Handle \x<num>. */
6047 unsigned int number
;
6052 /* Get pas the 'x'. */
6054 for (num_digit
= 0, number
= 0, dg
= *s
;
6056 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6057 || (dg
>= 'A' && dg
<= 'F'));
6061 number
= number
* 16 + dg
- '0';
6062 else if (dg
>= 'a' && dg
<= 'f')
6063 number
= number
* 16 + dg
- 'a' + 10;
6065 number
= number
* 16 + dg
- 'A' + 10;
6075 sprintf (num_buf
, "%02o", number
);
6078 sprintf (num_buf
, "%03o", number
);
6081 for (i
= 0; i
<= num_digit
; i
++)
6082 s_start
[i
] = num_buf
[i
];
6086 /* This might be a "\"", skip over the escaped char. */
6093 stringer (append_zero
);
6094 pa_undefine_label ();
6097 /* Handle a .VERSION pseudo-op. */
6104 pa_undefine_label ();
6107 /* Handle a .COPYRIGHT pseudo-op. */
6110 pa_copyright (unused
)
6114 pa_undefine_label ();
6117 /* Just like a normal cons, but when finished we have to undefine
6118 the latest space label. */
6125 pa_undefine_label ();
6128 /* Switch to the data space. As usual delete our label. */
6135 pa_undefine_label ();
6138 /* Like float_cons, but we need to undefine our label. */
6141 pa_float_cons (float_type
)
6144 float_cons (float_type
);
6145 pa_undefine_label ();
6148 /* Like s_fill, but delete our label when finished. */
6155 pa_undefine_label ();
6158 /* Like lcomm, but delete our label when finished. */
6161 pa_lcomm (needs_align
)
6164 s_lcomm (needs_align
);
6165 pa_undefine_label ();
6168 /* Like lsym, but delete our label when finished. */
6175 pa_undefine_label ();
6178 /* Switch to the text space. Like s_text, but delete our
6179 label when finished. */
6185 pa_undefine_label ();
6188 /* On the PA relocations which involve function symbols must not be
6189 adjusted. This so that the linker can know when/how to create argument
6190 relocation stubs for indirect calls and calls to static functions.
6192 FIXME. Also reject R_HPPA relocations which are 32 bits
6193 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6194 needs to generate relocations to push the addend and symbol value
6195 onto the stack, add them, then pop the value off the stack and
6196 use it in a relocation -- yuk. */
6199 hppa_fix_adjustable (fixp
)
6202 struct hppa_fix_struct
*hppa_fix
;
6204 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6206 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6209 if (fixp
->fx_addsy
== 0
6210 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6216 /* Return nonzero if the fixup in FIXP will require a relocation,
6217 even it if appears that the fixup could be completely handled
6221 hppa_force_relocation (fixp
)
6224 struct hppa_fix_struct
*hppa_fixp
;
6226 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6228 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6232 #define stub_needed(CALLER, CALLEE) \
6233 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6235 /* It is necessary to force PC-relative calls/jumps to have a relocation
6236 entry if they're going to need either a argument relocation or long
6237 call stub. FIXME. Can't we need the same for absolute calls? */
6238 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6239 && (stub_needed (((obj_symbol_type
*)
6240 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6241 hppa_fixp
->fx_arg_reloc
)))
6246 /* No need (yet) to force another relocations to be emitted. */
6250 /* Now for some ELF specific code. FIXME. */
6252 /* Mark the end of a function so that it's possible to compute
6253 the size of the function in hppa_elf_final_processing. */
6256 hppa_elf_mark_end_of_function ()
6258 /* ELF does not have EXIT relocations. All we do is create a
6259 temporary symbol marking the end of the function. */
6260 char *name
= (char *)
6261 xmalloc (strlen ("L$\001end_") +
6262 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6268 strcpy (name
, "L$\001end_");
6269 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6271 /* If we have a .exit followed by a .procend, then the
6272 symbol will have already been defined. */
6273 symbolP
= symbol_find (name
);
6276 /* The symbol has already been defined! This can
6277 happen if we have a .exit followed by a .procend.
6279 This is *not* an error. All we want to do is free
6280 the memory we just allocated for the name and continue. */
6285 /* symbol value should be the offset of the
6286 last instruction of the function */
6287 symbolP
= symbol_new (name
, now_seg
,
6288 (valueT
) (obstack_next_free (&frags
)
6289 - frag_now
->fr_literal
- 4),
6293 symbolP
->bsym
->flags
= BSF_LOCAL
;
6294 symbol_table_insert (symbolP
);
6298 last_call_info
->end_symbol
= symbolP
;
6300 as_bad ("Symbol '%s' could not be created.", name
);
6304 as_bad ("No memory for symbol name.");
6308 /* For ELF, this function serves one purpose: to setup the st_size
6309 field of STT_FUNC symbols. To do this, we need to scan the
6310 call_info structure list, determining st_size in by taking the
6311 difference in the address of the beginning/end marker symbols. */
6314 elf_hppa_final_processing ()
6316 struct call_info
*call_info_pointer
;
6318 for (call_info_pointer
= call_info_root
;
6320 call_info_pointer
= call_info_pointer
->ci_next
)
6322 elf_symbol_type
*esym
6323 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6324 esym
->internal_elf_sym
.st_size
=
6325 S_GET_VALUE (call_info_pointer
->end_symbol
)
6326 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;