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, char,
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 *, char, char, char,
512 char, char, char, 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, short 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 reloc
->addend
= fixp
->fx_addnumber
;
2783 /* Walk over reach relocation returned by the BFD backend. */
2784 for (i
= 0; i
< n_relocs
; i
++)
2788 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2789 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2790 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2796 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2801 /* For plabel relocations, the addend of the
2802 relocation should be either 0 (no static link) or 2
2803 (static link required).
2805 FIXME: We always assume no static link! */
2806 relocs
[i
]->addend
= 0;
2817 /* There is no symbol or addend associated with these fixups. */
2818 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2819 relocs
[i
]->addend
= 0;
2823 relocs
[i
]->addend
= fixp
->fx_addnumber
;
2832 /* Process any machine dependent frag types. */
2835 md_convert_frag (abfd
, sec
, fragP
)
2837 register asection
*sec
;
2838 register fragS
*fragP
;
2840 unsigned int address
;
2842 if (fragP
->fr_type
== rs_machine_dependent
)
2844 switch ((int) fragP
->fr_subtype
)
2847 fragP
->fr_type
= rs_fill
;
2848 know (fragP
->fr_var
== 1);
2849 know (fragP
->fr_next
);
2850 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2851 if (address
% fragP
->fr_offset
)
2854 fragP
->fr_next
->fr_address
2859 fragP
->fr_offset
= 0;
2865 /* Round up a section size to the appropriate boundary. */
2868 md_section_align (segment
, size
)
2872 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2873 int align2
= (1 << align
) - 1;
2875 return (size
+ align2
) & ~align2
;
2878 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2880 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2882 addressT from_addr
, to_addr
;
2886 fprintf (stderr
, "pa_create_short_jmp\n");
2890 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2892 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2894 addressT from_addr
, to_addr
;
2898 fprintf (stderr
, "pa_create_long_jump\n");
2902 /* Return the approximate size of a frag before relaxation has occurred. */
2904 md_estimate_size_before_relax (fragP
, segment
)
2905 register fragS
*fragP
;
2912 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2918 /* Parse machine dependent options. There are none on the PA. */
2920 md_parse_option (argP
, cntP
, vecP
)
2928 /* We have no need to default values of symbols. */
2931 md_undefined_symbol (name
)
2937 /* Parse an operand that is machine-specific.
2938 We just return without modifying the expression as we have nothing
2942 md_operand (expressionP
)
2943 expressionS
*expressionP
;
2947 /* Apply a fixup to an instruction. */
2950 md_apply_fix (fixP
, valp
)
2954 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2955 struct hppa_fix_struct
*hppa_fixP
;
2956 long new_val
, result
;
2957 unsigned int w1
, w2
, w
;
2960 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2961 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2962 never be "applied" (they are just markers). */
2964 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2965 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2969 /* There should have been an HPPA specific fixup associated
2970 with the GAS fixup. */
2973 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2974 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2976 if (fixP
->fx_r_type
== R_HPPA_NONE
)
2979 /* Remember this value for emit_reloc. FIXME, is this braindamage
2980 documented anywhere!?! */
2981 fixP
->fx_addnumber
= val
;
2983 /* Check if this is an undefined symbol. No relocation can
2984 possibly be performed in this case.
2986 Also avoid doing anything for pc-relative fixups in which the
2987 fixup is in a different space than the symbol it references. */
2988 if ((fixP
->fx_addsy
&& fixP
->fx_addsy
->bsym
->section
== &bfd_und_section
)
2990 && fixP
->fx_subsy
->bsym
->section
== &bfd_und_section
)
2993 && S_GET_SEGMENT (fixP
->fx_addsy
) != hppa_fixP
->segment
)
2996 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2999 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
3000 if (fmt
!= 0 && hppa_fixP
->fx_r_field
!= R_HPPA_PSEL
3001 && hppa_fixP
->fx_r_field
!= R_HPPA_LPSEL
3002 && hppa_fixP
->fx_r_field
!= R_HPPA_RPSEL
3003 && hppa_fixP
->fx_r_field
!= R_HPPA_TSEL
3004 && hppa_fixP
->fx_r_field
!= R_HPPA_LTSEL
3005 && hppa_fixP
->fx_r_field
!= R_HPPA_RTSEL
)
3006 new_val
= hppa_field_adjust (val
, 0, hppa_fixP
->fx_r_field
);
3012 /* Handle all opcodes with the 'j' operand type. */
3014 CHECK_FIELD (new_val
, 8191, -8192, 0);
3016 /* Mask off 14 bits to be changed. */
3017 bfd_put_32 (stdoutput
,
3018 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
3020 low_sign_unext (new_val
, 14, &result
);
3023 /* Handle all opcodes with the 'k' operand type. */
3025 CHECK_FIELD (new_val
, 2097152, 0, 0);
3027 /* Mask off 21 bits to be changed. */
3028 bfd_put_32 (stdoutput
,
3029 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
3031 dis_assemble_21 (new_val
, &result
);
3034 /* Handle all the opcodes with the 'i' operand type. */
3036 CHECK_FIELD (new_val
, 1023, -1023, 0);
3038 /* Mask off 11 bits to be changed. */
3039 bfd_put_32 (stdoutput
,
3040 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3042 low_sign_unext (new_val
, 11, &result
);
3045 /* Handle all the opcodes with the 'w' operand type. */
3047 CHECK_FIELD (new_val
, 8191, -8192, 0)
3049 /* Mask off 11 bits to be changed. */
3050 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3051 bfd_put_32 (stdoutput
,
3052 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3055 dis_assemble_12 (result
, &w1
, &w
);
3056 result
= ((w1
<< 2) | w
);
3059 /* Handle some of the opcodes with the 'W' operand type. */
3062 #define stub_needed(CALLER, CALLEE) \
3063 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3064 /* It is necessary to force PC-relative calls/jumps to have a
3065 relocation entry if they're going to need either a argument
3066 relocation or long call stub. FIXME. Can't we need the same
3067 for absolute calls? */
3069 && (stub_needed (((obj_symbol_type
*)
3070 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
3071 hppa_fixP
->fx_arg_reloc
)))
3075 CHECK_FIELD (new_val
, 262143, -262144, 0);
3077 /* Mask off 17 bits to be changed. */
3078 bfd_put_32 (stdoutput
,
3079 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3081 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3082 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3083 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3088 /* These are ELF specific relocations. ELF unfortunately
3089 handles unwinds in a completely different manner. */
3090 if (hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRY
3091 || hppa_fixP
->fx_r_type
== R_HPPA_UNWIND_ENTRIES
)
3092 result
= fixP
->fx_addnumber
;
3097 fixP
->fx_addnumber
= fixP
->fx_offset
;
3098 /* If we have a real relocation, then we want zero to
3099 be stored in the object file. If no relocation is going
3100 to be emitted, then we need to store new_val into the
3103 bfd_put_32 (stdoutput
, 0, buf
);
3105 bfd_put_32 (stdoutput
, new_val
, buf
);
3114 as_bad ("Unknown relocation encountered in md_apply_fix.");
3118 /* Insert the relocation. */
3119 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3124 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3125 (unsigned int) fixP
, fixP
->fx_r_type
);
3130 /* Exactly what point is a PC-relative offset relative TO?
3131 On the PA, they're relative to the address of the offset. */
3134 md_pcrel_from (fixP
)
3137 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3140 /* Return nonzero if the input line pointer is at the end of
3144 is_end_of_statement ()
3146 return ((*input_line_pointer
== '\n')
3147 || (*input_line_pointer
== ';')
3148 || (*input_line_pointer
== '!'));
3151 /* Read a number from S. The number might come in one of many forms,
3152 the most common will be a hex or decimal constant, but it could be
3153 a pre-defined register (Yuk!), or an absolute symbol.
3155 Return a number or -1 for failure.
3157 When parsing PA-89 FP register numbers RESULT will be
3158 the address of a structure to return information about
3159 L/R half of FP registers, store results there as appropriate.
3161 pa_parse_number can not handle negative constants and will fail
3162 horribly if it is passed such a constant. */
3165 pa_parse_number (s
, result
)
3167 struct pa_89_fp_reg_struct
*result
;
3176 /* Skip whitespace before the number. */
3177 while (*p
== ' ' || *p
== '\t')
3180 /* Store info in RESULT if requested by caller. */
3183 result
->number_part
= -1;
3184 result
->l_r_select
= -1;
3190 /* Looks like a number. */
3193 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3195 /* The number is specified in hex. */
3197 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3198 || ((*p
>= 'A') && (*p
<= 'F')))
3201 num
= num
* 16 + *p
- '0';
3202 else if (*p
>= 'a' && *p
<= 'f')
3203 num
= num
* 16 + *p
- 'a' + 10;
3205 num
= num
* 16 + *p
- 'A' + 10;
3211 /* The number is specified in decimal. */
3212 while (isdigit (*p
))
3214 num
= num
* 10 + *p
- '0';
3219 /* Store info in RESULT if requested by the caller. */
3222 result
->number_part
= num
;
3224 if (IS_R_SELECT (p
))
3226 result
->l_r_select
= 1;
3229 else if (IS_L_SELECT (p
))
3231 result
->l_r_select
= 0;
3235 result
->l_r_select
= 0;
3240 /* The number might be a predefined register. */
3245 /* Tege hack: Special case for general registers as the general
3246 code makes a binary search with case translation, and is VERY
3251 if (*p
== 'e' && *(p
+ 1) == 't'
3252 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3255 num
= *p
- '0' + 28;
3263 else if (!isdigit (*p
))
3266 as_bad ("Undefined register: '%s'.", name
);
3272 num
= num
* 10 + *p
++ - '0';
3273 while (isdigit (*p
));
3278 /* Do a normal register search. */
3279 while (is_part_of_name (c
))
3285 status
= reg_name_search (name
);
3291 as_bad ("Undefined register: '%s'.", name
);
3297 /* Store info in RESULT if requested by caller. */
3300 result
->number_part
= num
;
3301 if (IS_R_SELECT (p
- 1))
3302 result
->l_r_select
= 1;
3303 else if (IS_L_SELECT (p
- 1))
3304 result
->l_r_select
= 0;
3306 result
->l_r_select
= 0;
3311 /* And finally, it could be a symbol in the absolute section which
3312 is effectively a constant. */
3316 while (is_part_of_name (c
))
3322 if ((sym
= symbol_find (name
)) != NULL
)
3324 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3325 num
= S_GET_VALUE (sym
);
3329 as_bad ("Non-absolute symbol: '%s'.", name
);
3335 /* There is where we'd come for an undefined symbol
3336 or for an empty string. For an empty string we
3337 will return zero. That's a concession made for
3338 compatability with the braindamaged HP assemblers. */
3344 as_bad ("Undefined absolute constant: '%s'.", name
);
3350 /* Store info in RESULT if requested by caller. */
3353 result
->number_part
= num
;
3354 if (IS_R_SELECT (p
- 1))
3355 result
->l_r_select
= 1;
3356 else if (IS_L_SELECT (p
- 1))
3357 result
->l_r_select
= 0;
3359 result
->l_r_select
= 0;
3367 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3369 /* Given NAME, find the register number associated with that name, return
3370 the integer value associated with the given name or -1 on failure. */
3373 reg_name_search (name
)
3376 int middle
, low
, high
;
3380 high
= REG_NAME_CNT
- 1;
3384 middle
= (low
+ high
) / 2;
3385 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3391 return pre_defined_registers
[middle
].value
;
3393 while (low
<= high
);
3399 /* Return nonzero if the given INSN and L/R information will require
3400 a new PA-89 opcode. */
3403 need_89_opcode (insn
, result
)
3405 struct pa_89_fp_reg_struct
*result
;
3407 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3413 /* Parse a condition for a fcmp instruction. Return the numerical
3414 code associated with the condition. */
3417 pa_parse_fp_cmp_cond (s
)
3424 for (i
= 0; i
< 32; i
++)
3426 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3427 strlen (fp_cond_map
[i
].string
)) == 0)
3429 cond
= fp_cond_map
[i
].cond
;
3430 *s
+= strlen (fp_cond_map
[i
].string
);
3431 while (**s
== ' ' || **s
== '\t')
3437 as_bad ("Invalid FP Compare Condition: %c", **s
);
3441 /* Parse an FP operand format completer returning the completer
3444 static fp_operand_format
3445 pa_parse_fp_format (s
)
3454 if (strncasecmp (*s
, "sgl", 3) == 0)
3459 else if (strncasecmp (*s
, "dbl", 3) == 0)
3464 else if (strncasecmp (*s
, "quad", 4) == 0)
3471 format
= ILLEGAL_FMT
;
3472 as_bad ("Invalid FP Operand Format: %3s", *s
);
3479 /* Convert from a selector string into a selector type. */
3482 pa_chk_field_selector (str
)
3485 int middle
, low
, high
;
3489 /* Read past any whitespace. */
3490 /* FIXME: should we read past newlines and formfeeds??? */
3491 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3494 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3495 name
[0] = tolower ((*str
)[0]),
3497 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3498 name
[0] = tolower ((*str
)[0]),
3499 name
[1] = tolower ((*str
)[1]),
3505 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3509 middle
= (low
+ high
) / 2;
3510 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3517 *str
+= strlen (name
) + 1;
3518 return selector_table
[middle
].field_selector
;
3521 while (low
<= high
);
3526 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3529 get_expression (str
)
3535 save_in
= input_line_pointer
;
3536 input_line_pointer
= str
;
3537 seg
= expression (&the_insn
.exp
);
3538 if (!(seg
== absolute_section
3539 || seg
== undefined_section
3540 || SEG_NORMAL (seg
)))
3542 as_warn ("Bad segment in expression.");
3543 expr_end
= input_line_pointer
;
3544 input_line_pointer
= save_in
;
3547 expr_end
= input_line_pointer
;
3548 input_line_pointer
= save_in
;
3552 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3554 pa_get_absolute_expression (insn
, strp
)
3560 insn
->field_selector
= pa_chk_field_selector (strp
);
3561 save_in
= input_line_pointer
;
3562 input_line_pointer
= *strp
;
3563 expression (&insn
->exp
);
3564 if (insn
->exp
.X_op
!= O_constant
)
3566 as_bad ("Bad segment (should be absolute).");
3567 expr_end
= input_line_pointer
;
3568 input_line_pointer
= save_in
;
3571 expr_end
= input_line_pointer
;
3572 input_line_pointer
= save_in
;
3573 return evaluate_absolute (insn
);
3576 /* Evaluate an absolute expression EXP which may be modified by
3577 the selector FIELD_SELECTOR. Return the value of the expression. */
3579 evaluate_absolute (insn
)
3584 int field_selector
= insn
->field_selector
;
3587 value
= exp
.X_add_number
;
3589 switch (field_selector
)
3595 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3597 if (value
& 0x00000400)
3599 value
= (value
& 0xfffff800) >> 11;
3602 /* Sign extend from bit 21. */
3604 if (value
& 0x00000400)
3605 value
|= 0xfffff800;
3610 /* Arithmetic shift right 11 bits. */
3612 value
= (value
& 0xfffff800) >> 11;
3615 /* Set bits 0-20 to zero. */
3617 value
= value
& 0x7ff;
3620 /* Add 0x800 and arithmetic shift right 11 bits. */
3623 value
= (value
& 0xfffff800) >> 11;
3626 /* Set bitgs 0-21 to one. */
3628 value
|= 0xfffff800;
3631 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3633 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3637 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3642 BAD_CASE (field_selector
);
3648 /* Given an argument location specification return the associated
3649 argument location number. */
3652 pa_build_arg_reloc (type_name
)
3656 if (strncasecmp (type_name
, "no", 2) == 0)
3658 if (strncasecmp (type_name
, "gr", 2) == 0)
3660 else if (strncasecmp (type_name
, "fr", 2) == 0)
3662 else if (strncasecmp (type_name
, "fu", 2) == 0)
3665 as_bad ("Invalid argument location: %s\n", type_name
);
3670 /* Encode and return an argument relocation specification for
3671 the given register in the location specified by arg_reloc. */
3674 pa_align_arg_reloc (reg
, arg_reloc
)
3676 unsigned int arg_reloc
;
3678 unsigned int new_reloc
;
3680 new_reloc
= arg_reloc
;
3696 as_bad ("Invalid argument description: %d", reg
);
3702 /* Parse a PA nullification completer (,n). Return nonzero if the
3703 completer was found; return zero if no completer was found. */
3715 if (strncasecmp (*s
, "n", 1) == 0)
3719 as_bad ("Invalid Nullification: (%c)", **s
);
3728 /* Parse a non-negated compare/subtract completer returning the
3729 number (for encoding in instrutions) of the given completer.
3731 ISBRANCH specifies whether or not this is parsing a condition
3732 completer for a branch (vs a nullification completer for a
3733 computational instruction. */
3736 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3741 char *name
= *s
+ 1;
3749 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3753 if (strcmp (name
, "=") == 0)
3757 else if (strcmp (name
, "<") == 0)
3761 else if (strcmp (name
, "<=") == 0)
3765 else if (strcmp (name
, "<<") == 0)
3769 else if (strcmp (name
, "<<=") == 0)
3773 else if (strcasecmp (name
, "sv") == 0)
3777 else if (strcasecmp (name
, "od") == 0)
3781 /* If we have something like addb,n then there is no condition
3783 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3794 /* Reset pointers if this was really a ,n for a branch instruction. */
3795 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3801 /* Parse a negated compare/subtract completer returning the
3802 number (for encoding in instrutions) of the given completer.
3804 ISBRANCH specifies whether or not this is parsing a condition
3805 completer for a branch (vs a nullification completer for a
3806 computational instruction. */
3809 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3814 char *name
= *s
+ 1;
3822 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3826 if (strcasecmp (name
, "tr") == 0)
3830 else if (strcmp (name
, "<>") == 0)
3834 else if (strcmp (name
, ">=") == 0)
3838 else if (strcmp (name
, ">") == 0)
3842 else if (strcmp (name
, ">>=") == 0)
3846 else if (strcmp (name
, ">>") == 0)
3850 else if (strcasecmp (name
, "nsv") == 0)
3854 else if (strcasecmp (name
, "ev") == 0)
3858 /* If we have something like addb,n then there is no condition
3860 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3871 /* Reset pointers if this was really a ,n for a branch instruction. */
3872 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3878 /* Parse a non-negated addition completer returning the number
3879 (for encoding in instrutions) of the given completer.
3881 ISBRANCH specifies whether or not this is parsing a condition
3882 completer for a branch (vs a nullification completer for a
3883 computational instruction. */
3886 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3891 char *name
= *s
+ 1;
3899 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3903 if (strcmp (name
, "=") == 0)
3907 else if (strcmp (name
, "<") == 0)
3911 else if (strcmp (name
, "<=") == 0)
3915 else if (strcasecmp (name
, "nuv") == 0)
3919 else if (strcasecmp (name
, "znv") == 0)
3923 else if (strcasecmp (name
, "sv") == 0)
3927 else if (strcasecmp (name
, "od") == 0)
3931 /* If we have something like addb,n then there is no condition
3933 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3944 /* Reset pointers if this was really a ,n for a branch instruction. */
3945 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3951 /* Parse a negated addition completer returning the number
3952 (for encoding in instrutions) of the given completer.
3954 ISBRANCH specifies whether or not this is parsing a condition
3955 completer for a branch (vs a nullification completer for a
3956 computational instruction. */
3959 pa_parse_neg_add_cmpltr (s
, isbranch
)
3964 char *name
= *s
+ 1;
3972 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3976 if (strcasecmp (name
, "tr") == 0)
3980 else if (strcmp (name
, "<>") == 0)
3984 else if (strcmp (name
, ">=") == 0)
3988 else if (strcmp (name
, ">") == 0)
3992 else if (strcasecmp (name
, "uv") == 0)
3996 else if (strcasecmp (name
, "vnz") == 0)
4000 else if (strcasecmp (name
, "nsv") == 0)
4004 else if (strcasecmp (name
, "ev") == 0)
4008 /* If we have something like addb,n then there is no condition
4010 else if (strcasecmp (name
, "n") == 0 && isbranch
)
4021 /* Reset pointers if this was really a ,n for a branch instruction. */
4022 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
4028 /* Handle a .BLOCK type pseudo-op. */
4036 unsigned int temp_size
;
4039 temp_size
= get_absolute_expression ();
4041 /* Always fill with zeros, that's what the HP assembler does. */
4044 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4045 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4046 bzero (p
, temp_size
);
4048 /* Convert 2 bytes at a time. */
4050 for (i
= 0; i
< temp_size
; i
+= 2)
4052 md_number_to_chars (p
+ i
,
4054 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4057 pa_undefine_label ();
4058 demand_empty_rest_of_line ();
4061 /* Handle a .CALL pseudo-op. This involves storing away information
4062 about where arguments are to be found so the linker can detect
4063 (and correct) argument location mismatches between caller and callee. */
4069 pa_call_args (&last_call_desc
);
4070 demand_empty_rest_of_line ();
4073 /* Do the dirty work of building a call descriptor which describes
4074 where the caller placed arguments to a function call. */
4077 pa_call_args (call_desc
)
4078 struct call_desc
*call_desc
;
4081 unsigned int temp
, arg_reloc
;
4083 while (!is_end_of_statement ())
4085 name
= input_line_pointer
;
4086 c
= get_symbol_end ();
4087 /* Process a source argument. */
4088 if ((strncasecmp (name
, "argw", 4) == 0))
4090 temp
= atoi (name
+ 4);
4091 p
= input_line_pointer
;
4093 input_line_pointer
++;
4094 name
= input_line_pointer
;
4095 c
= get_symbol_end ();
4096 arg_reloc
= pa_build_arg_reloc (name
);
4097 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4099 /* Process a return value. */
4100 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4102 p
= input_line_pointer
;
4104 input_line_pointer
++;
4105 name
= input_line_pointer
;
4106 c
= get_symbol_end ();
4107 arg_reloc
= pa_build_arg_reloc (name
);
4108 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4112 as_bad ("Invalid .CALL argument: %s", name
);
4114 p
= input_line_pointer
;
4116 if (!is_end_of_statement ())
4117 input_line_pointer
++;
4121 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4124 is_same_frag (frag1
, frag2
)
4131 else if (frag2
== NULL
)
4133 else if (frag1
== frag2
)
4135 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4136 return (is_same_frag (frag1
, frag2
->fr_next
));
4142 /* Build an entry in the UNWIND subspace from the given function
4143 attributes in CALL_INFO. This is not needed for SOM as using
4144 R_ENTRY and R_EXIT relocations allow the linker to handle building
4145 of the unwind spaces. */
4148 pa_build_unwind_subspace (call_info
)
4149 struct call_info
*call_info
;
4152 asection
*seg
, *save_seg
;
4153 subsegT subseg
, save_subseg
;
4157 /* Get into the right seg/subseg. This may involve creating
4158 the seg the first time through. Make sure to have the
4159 old seg/subseg so that we can reset things when we are done. */
4160 subseg
= SUBSEG_UNWIND
;
4161 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4162 if (seg
== ASEC_NULL
)
4164 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4165 bfd_set_section_flags (stdoutput
, seg
,
4166 SEC_READONLY
| SEC_HAS_CONTENTS
4167 | SEC_LOAD
| SEC_RELOC
);
4171 save_subseg
= now_subseg
;
4172 subseg_set (seg
, subseg
);
4175 /* Get some space to hold relocation information for the unwind
4179 /* Relocation info. for start offset of the function. */
4180 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4181 call_info
->start_symbol
, (offsetT
) 0,
4182 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4187 /* Relocation info. for end offset of the function. */
4188 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4189 call_info
->end_symbol
, (offsetT
) 0,
4190 (expressionS
*) NULL
, 0, R_HPPA_UNWIND
, e_fsel
, 32, 0,
4194 unwind
= (char *) &call_info
->ci_unwind
;
4195 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4199 FRAG_APPEND_1_CHAR (c
);
4203 /* Return back to the original segment/subsegment. */
4204 subseg_set (save_seg
, save_subseg
);
4208 /* Process a .CALLINFO pseudo-op. This information is used later
4209 to build unwind descriptors and maybe one day to support
4210 .ENTER and .LEAVE. */
4213 pa_callinfo (unused
)
4219 /* .CALLINFO must appear within a procedure definition. */
4220 if (!within_procedure
)
4221 as_bad (".callinfo is not within a procedure definition");
4223 /* Mark the fact that we found the .CALLINFO for the
4224 current procedure. */
4225 callinfo_found
= TRUE
;
4227 /* Iterate over the .CALLINFO arguments. */
4228 while (!is_end_of_statement ())
4230 name
= input_line_pointer
;
4231 c
= get_symbol_end ();
4232 /* Frame size specification. */
4233 if ((strncasecmp (name
, "frame", 5) == 0))
4235 p
= input_line_pointer
;
4237 input_line_pointer
++;
4238 temp
= get_absolute_expression ();
4239 if ((temp
& 0x3) != 0)
4241 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4245 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4246 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4249 /* Entry register (GR, GR and SR) specifications. */
4250 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4252 p
= input_line_pointer
;
4254 input_line_pointer
++;
4255 temp
= get_absolute_expression ();
4256 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4257 even though %r19 is caller saved. I think this is a bug in
4258 the HP assembler, and we are not going to emulate it. */
4259 if (temp
< 3 || temp
> 18)
4260 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4261 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4263 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4265 p
= input_line_pointer
;
4267 input_line_pointer
++;
4268 temp
= get_absolute_expression ();
4269 /* Similarly the HP assembler takes 31 as the high bound even
4270 though %fr21 is the last callee saved floating point register. */
4271 if (temp
< 12 || temp
> 21)
4272 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4273 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4275 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4277 p
= input_line_pointer
;
4279 input_line_pointer
++;
4280 temp
= get_absolute_expression ();
4282 as_bad ("Value for ENTRY_SR must be 3\n");
4284 /* Note whether or not this function performs any calls. */
4285 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4286 (strncasecmp (name
, "caller", 6) == 0))
4288 p
= input_line_pointer
;
4291 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4293 p
= input_line_pointer
;
4296 /* Should RP be saved into the stack. */
4297 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4299 p
= input_line_pointer
;
4301 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4303 /* Likewise for SP. */
4304 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4306 p
= input_line_pointer
;
4308 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4310 /* Is this an unwindable procedure. If so mark it so
4311 in the unwind descriptor. */
4312 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4314 p
= input_line_pointer
;
4316 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4318 /* Is this an interrupt routine. If so mark it in the
4319 unwind descriptor. */
4320 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4322 p
= input_line_pointer
;
4324 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4326 /* Is this a millicode routine. "millicode" isn't in my
4327 assembler manual, but my copy is old. The HP assembler
4328 accepts it, and there's a place in the unwind descriptor
4329 to drop the information, so we'll accept it too. */
4330 else if ((strncasecmp (name
, "millicode", 9) == 0))
4332 p
= input_line_pointer
;
4334 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4338 as_bad ("Invalid .CALLINFO argument: %s", name
);
4339 *input_line_pointer
= c
;
4341 if (!is_end_of_statement ())
4342 input_line_pointer
++;
4345 demand_empty_rest_of_line ();
4348 /* Switch into the code subspace. */
4354 sd_chain_struct
*sdchain
;
4356 /* First time through it might be necessary to create the
4358 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4360 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4361 pa_def_spaces
[0].spnum
,
4362 pa_def_spaces
[0].loadable
,
4363 pa_def_spaces
[0].defined
,
4364 pa_def_spaces
[0].private,
4365 pa_def_spaces
[0].sort
,
4366 pa_def_spaces
[0].segment
, 0);
4369 SPACE_DEFINED (sdchain
) = 1;
4370 subseg_set (text_section
, SUBSEG_CODE
);
4371 demand_empty_rest_of_line ();
4374 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4375 the .comm pseudo-op has the following symtax:
4377 <label> .comm <length>
4379 where <label> is optional and is a symbol whose address will be the start of
4380 a block of memory <length> bytes long. <length> must be an absolute
4381 expression. <length> bytes will be allocated in the current space
4390 label_symbol_struct
*label_symbol
= pa_get_label ();
4393 symbol
= label_symbol
->lss_label
;
4398 size
= get_absolute_expression ();
4402 /* It is incorrect to check S_IS_DEFINED at this point as
4403 the symbol will *always* be defined. FIXME. How to
4404 correctly determine when this label really as been
4406 if (S_GET_VALUE (symbol
))
4408 if (S_GET_VALUE (symbol
) != size
)
4410 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4411 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4417 S_SET_VALUE (symbol
, size
);
4418 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4419 S_SET_EXTERNAL (symbol
);
4422 demand_empty_rest_of_line ();
4425 /* Process a .END pseudo-op. */
4431 demand_empty_rest_of_line ();
4434 /* Process a .ENTER pseudo-op. This is not supported. */
4442 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4448 if (!within_procedure
)
4449 as_bad ("Misplaced .entry. Ignored.");
4452 if (!callinfo_found
)
4453 as_bad ("Missing .callinfo.");
4455 demand_empty_rest_of_line ();
4456 within_entry_exit
= TRUE
;
4459 /* SOM defers building of unwind descriptors until the link phase.
4460 The assembler is responsible for creating an R_ENTRY relocation
4461 to mark the beginning of a region and hold the unwind bits, and
4462 for creating an R_EXIT relocation to mark the end of the region.
4464 FIXME. ELF should be using the same conventions! The problem
4465 is an unwind requires too much relocation space. Hmmm. Maybe
4466 if we split the unwind bits up between the relocations which
4467 denote the entry and exit points. */
4468 if (last_call_info
->start_symbol
!= NULL
)
4470 char *where
= frag_more (0);
4472 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4473 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4474 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4475 (char *) &last_call_info
->ci_unwind
.descriptor
);
4480 /* Handle a .EQU pseudo-op. */
4486 label_symbol_struct
*label_symbol
= pa_get_label ();
4491 symbol
= label_symbol
->lss_label
;
4493 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4495 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4496 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4501 as_bad (".REG must use a label");
4503 as_bad (".EQU must use a label");
4506 pa_undefine_label ();
4507 demand_empty_rest_of_line ();
4510 /* Helper function. Does processing for the end of a function. This
4511 usually involves creating some relocations or building special
4512 symbols to mark the end of the function. */
4519 where
= frag_more (0);
4522 /* Mark the end of the function, stuff away the location of the frag
4523 for the end of the function, and finally call pa_build_unwind_subspace
4524 to add an entry in the unwind table. */
4525 hppa_elf_mark_end_of_function ();
4526 pa_build_unwind_subspace (last_call_info
);
4528 /* SOM defers building of unwind descriptors until the link phase.
4529 The assembler is responsible for creating an R_ENTRY relocation
4530 to mark the beginning of a region and hold the unwind bits, and
4531 for creating an R_EXIT relocation to mark the end of the region.
4533 FIXME. ELF should be using the same conventions! The problem
4534 is an unwind requires too much relocation space. Hmmm. Maybe
4535 if we split the unwind bits up between the relocations which
4536 denote the entry and exit points. */
4537 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4538 last_call_info
->start_symbol
, (offsetT
) 0,
4539 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4543 /* Process a .EXIT pseudo-op. */
4549 if (!within_procedure
)
4550 as_bad (".EXIT must appear within a procedure");
4553 if (!callinfo_found
)
4554 as_bad ("Missing .callinfo");
4557 if (!within_entry_exit
)
4558 as_bad ("No .ENTRY for this .EXIT");
4561 within_entry_exit
= FALSE
;
4566 demand_empty_rest_of_line ();
4569 /* Process a .EXPORT directive. This makes functions external
4570 and provides information such as argument relocation entries
4580 name
= input_line_pointer
;
4581 c
= get_symbol_end ();
4582 /* Make sure the given symbol exists. */
4583 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4585 as_bad ("Cannot define export symbol: %s\n", name
);
4586 p
= input_line_pointer
;
4588 input_line_pointer
++;
4592 /* OK. Set the external bits and process argument relocations. */
4593 S_SET_EXTERNAL (symbol
);
4594 p
= input_line_pointer
;
4596 if (!is_end_of_statement ())
4598 input_line_pointer
++;
4599 pa_type_args (symbol
, 1);
4603 demand_empty_rest_of_line ();
4606 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4609 pa_type_args (symbolP
, is_export
)
4614 unsigned int temp
, arg_reloc
;
4615 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4616 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4618 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4621 input_line_pointer
+= 8;
4622 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4623 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4624 type
= SYMBOL_TYPE_ABSOLUTE
;
4626 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4628 input_line_pointer
+= 4;
4629 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4630 instead one should be IMPORTing/EXPORTing ENTRY types.
4632 Complain if one tries to EXPORT a CODE type since that's never
4633 done. Both GCC and HP C still try to IMPORT CODE types, so
4634 silently fix them to be ENTRY types. */
4635 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4638 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4640 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4641 type
= SYMBOL_TYPE_ENTRY
;
4645 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4646 type
= SYMBOL_TYPE_CODE
;
4649 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4651 input_line_pointer
+= 4;
4652 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4653 type
= SYMBOL_TYPE_DATA
;
4655 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4657 input_line_pointer
+= 5;
4658 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4659 type
= SYMBOL_TYPE_ENTRY
;
4661 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4663 input_line_pointer
+= 9;
4664 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4665 type
= SYMBOL_TYPE_MILLICODE
;
4667 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4669 input_line_pointer
+= 6;
4670 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4671 type
= SYMBOL_TYPE_PLABEL
;
4673 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4675 input_line_pointer
+= 8;
4676 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4677 type
= SYMBOL_TYPE_PRI_PROG
;
4679 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4681 input_line_pointer
+= 8;
4682 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4683 type
= SYMBOL_TYPE_SEC_PROG
;
4686 /* SOM requires much more information about symbol types
4687 than BFD understands. This is how we get this information
4688 to the SOM BFD backend. */
4689 #ifdef obj_set_symbol_type
4690 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4693 /* Now that the type of the exported symbol has been handled,
4694 handle any argument relocation information. */
4695 while (!is_end_of_statement ())
4697 if (*input_line_pointer
== ',')
4698 input_line_pointer
++;
4699 name
= input_line_pointer
;
4700 c
= get_symbol_end ();
4701 /* Argument sources. */
4702 if ((strncasecmp (name
, "argw", 4) == 0))
4704 p
= input_line_pointer
;
4706 input_line_pointer
++;
4707 temp
= atoi (name
+ 4);
4708 name
= input_line_pointer
;
4709 c
= get_symbol_end ();
4710 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4711 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4712 *input_line_pointer
= c
;
4714 /* The return value. */
4715 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4717 p
= input_line_pointer
;
4719 input_line_pointer
++;
4720 name
= input_line_pointer
;
4721 c
= get_symbol_end ();
4722 arg_reloc
= pa_build_arg_reloc (name
);
4723 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4724 *input_line_pointer
= c
;
4726 /* Privelege level. */
4727 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4729 p
= input_line_pointer
;
4731 input_line_pointer
++;
4732 temp
= atoi (input_line_pointer
);
4733 c
= get_symbol_end ();
4734 *input_line_pointer
= c
;
4738 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4739 p
= input_line_pointer
;
4742 if (!is_end_of_statement ())
4743 input_line_pointer
++;
4747 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4748 assembly file must either be defined in the assembly file, or
4749 explicitly IMPORTED from another. */
4758 name
= input_line_pointer
;
4759 c
= get_symbol_end ();
4761 symbol
= symbol_find (name
);
4762 /* Ugh. We might be importing a symbol defined earlier in the file,
4763 in which case all the code below will really screw things up
4764 (set the wrong segment, symbol flags & type, etc). */
4765 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4767 symbol
= symbol_find_or_make (name
);
4768 p
= input_line_pointer
;
4771 if (!is_end_of_statement ())
4773 input_line_pointer
++;
4774 pa_type_args (symbol
, 0);
4778 /* Sigh. To be compatable with the HP assembler and to help
4779 poorly written assembly code, we assign a type based on
4780 the the current segment. Note only BSF_FUNCTION really
4781 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4782 if (now_seg
== text_section
)
4783 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4785 /* If the section is undefined, then the symbol is undefined
4786 Since this is an import, leave the section undefined. */
4787 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4792 /* The symbol was already defined. Just eat everything up to
4793 the end of the current statement. */
4794 while (!is_end_of_statement ())
4795 input_line_pointer
++;
4798 demand_empty_rest_of_line ();
4801 /* Handle a .LABEL pseudo-op. */
4809 name
= input_line_pointer
;
4810 c
= get_symbol_end ();
4812 if (strlen (name
) > 0)
4815 p
= input_line_pointer
;
4820 as_warn ("Missing label name on .LABEL");
4823 if (!is_end_of_statement ())
4825 as_warn ("extra .LABEL arguments ignored.");
4826 ignore_rest_of_line ();
4828 demand_empty_rest_of_line ();
4831 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4840 /* Handle a .ORIGIN pseudo-op. */
4847 pa_undefine_label ();
4850 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4851 is for static functions. FIXME. Should share more code with .EXPORT. */
4860 name
= input_line_pointer
;
4861 c
= get_symbol_end ();
4863 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4865 as_bad ("Cannot define static symbol: %s\n", name
);
4866 p
= input_line_pointer
;
4868 input_line_pointer
++;
4872 S_CLEAR_EXTERNAL (symbol
);
4873 p
= input_line_pointer
;
4875 if (!is_end_of_statement ())
4877 input_line_pointer
++;
4878 pa_type_args (symbol
, 0);
4882 demand_empty_rest_of_line ();
4885 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4886 of a procedure from a syntatical point of view. */
4892 struct call_info
*call_info
;
4895 if (within_procedure
)
4896 as_fatal ("Nested procedures");
4898 /* Reset global variables for new procedure. */
4899 callinfo_found
= FALSE
;
4900 within_procedure
= TRUE
;
4903 Enabling
this code creates severe problems with GDB
. It appears as
if
4904 inserting linker stubs between functions within a single
.o makes GDB
4907 /* Create a new CODE subspace for each procedure if we are not
4908 using space/subspace aliases. */
4909 if (!USE_ALIASES
&& call_info_root
!= NULL
)
4911 /* Force creation of a new $CODE$ subspace; inherit attributes from
4912 the first $CODE$ subspace. */
4913 seg
= subseg_force_new ("$CODE$", 0);
4915 /* Now set the flags. */
4916 bfd_set_section_flags (stdoutput
, seg
,
4917 bfd_get_section_flags (abfd
, text_section
));
4919 /* Record any alignment request for this section. */
4920 record_alignment (seg
,
4921 bfd_get_section_alignment (stdoutput
, text_section
));
4923 /* Change the "text_section" to be our new $CODE$ subspace. */
4925 subseg_set (text_section
, 0);
4927 #ifdef obj_set_subsection_attributes
4928 /* Need a way to inherit the the access bits, sort key and quadrant
4929 from the first $CODE$ subspace. FIXME. */
4930 obj_set_subsection_attributes (seg
, current_space
->sd_seg
, 0x2c, 24, 0);
4935 /* Create another call_info structure. */
4936 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4939 as_fatal ("Cannot allocate unwind descriptor\n");
4941 bzero (call_info
, sizeof (struct call_info
));
4943 call_info
->ci_next
= NULL
;
4945 if (call_info_root
== NULL
)
4947 call_info_root
= call_info
;
4948 last_call_info
= call_info
;
4952 last_call_info
->ci_next
= call_info
;
4953 last_call_info
= call_info
;
4956 /* set up defaults on call_info structure */
4958 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4959 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4960 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4962 /* If we got a .PROC pseudo-op, we know that the function is defined
4963 locally. Make sure it gets into the symbol table. */
4965 label_symbol_struct
*label_symbol
= pa_get_label ();
4969 if (label_symbol
->lss_label
)
4971 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4972 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4976 /* The label was defined in a different segment. Fix that
4977 along with the value and associated fragment. */
4978 S_SET_SEGMENT (last_call_info
->start_symbol
, now_seg
);
4979 S_SET_VALUE (last_call_info
->start_symbol
,
4980 ((char*)obstack_next_free (&frags
)
4981 - frag_now
->fr_literal
));
4982 last_call_info
->start_symbol
->sy_frag
= frag_now
;
4987 as_bad ("Missing function name for .PROC (corrupted label chain)");
4990 last_call_info
->start_symbol
= NULL
;
4993 demand_empty_rest_of_line ();
4996 /* Process the syntatical end of a procedure. Make sure all the
4997 appropriate pseudo-ops were found within the procedure. */
5004 if (!within_procedure
)
5005 as_bad ("misplaced .procend");
5007 if (!callinfo_found
)
5008 as_bad ("Missing .callinfo for this procedure");
5010 if (within_entry_exit
)
5011 as_bad ("Missing .EXIT for a .ENTRY");
5014 /* ELF needs to mark the end of each function so that it can compute
5015 the size of the function (apparently its needed in the symbol table. */
5016 hppa_elf_mark_end_of_function ();
5019 within_procedure
= FALSE
;
5020 demand_empty_rest_of_line ();
5021 pa_undefine_label ();
5024 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5025 then create a new space entry to hold the information specified
5026 by the parameters to the .SPACE directive. */
5028 static sd_chain_struct
*
5029 pa_parse_space_stmt (space_name
, create_flag
)
5033 char *name
, *ptemp
, c
;
5034 char loadable
, defined
, private, sort
;
5036 asection
*seg
= NULL
;
5037 sd_chain_struct
*space
;
5039 /* load default values */
5045 if (strcmp (space_name
, "$TEXT$") == 0)
5047 seg
= pa_def_spaces
[0].segment
;
5048 sort
= pa_def_spaces
[0].sort
;
5050 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5052 seg
= pa_def_spaces
[1].segment
;
5053 sort
= pa_def_spaces
[1].sort
;
5056 if (!is_end_of_statement ())
5058 print_errors
= FALSE
;
5059 ptemp
= input_line_pointer
+ 1;
5060 /* First see if the space was specified as a number rather than
5061 as a name. According to the PA assembly manual the rest of
5062 the line should be ignored. */
5063 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5064 input_line_pointer
= ptemp
;
5067 while (!is_end_of_statement ())
5069 input_line_pointer
++;
5070 name
= input_line_pointer
;
5071 c
= get_symbol_end ();
5072 if ((strncasecmp (name
, "spnum", 5) == 0))
5074 *input_line_pointer
= c
;
5075 input_line_pointer
++;
5076 spnum
= get_absolute_expression ();
5078 else if ((strncasecmp (name
, "sort", 4) == 0))
5080 *input_line_pointer
= c
;
5081 input_line_pointer
++;
5082 sort
= get_absolute_expression ();
5084 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5086 *input_line_pointer
= c
;
5089 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5091 *input_line_pointer
= c
;
5094 else if ((strncasecmp (name
, "private", 7) == 0))
5096 *input_line_pointer
= c
;
5101 as_bad ("Invalid .SPACE argument");
5102 *input_line_pointer
= c
;
5103 if (!is_end_of_statement ())
5104 input_line_pointer
++;
5108 print_errors
= TRUE
;
5111 if (create_flag
&& seg
== NULL
)
5112 seg
= subseg_new (space_name
, 0);
5114 /* If create_flag is nonzero, then create the new space with
5115 the attributes computed above. Else set the values in
5116 an already existing space -- this can only happen for
5117 the first occurence of a built-in space. */
5119 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5120 private, sort
, seg
, 1);
5123 space
= is_defined_space (space_name
);
5124 SPACE_SPNUM (space
) = spnum
;
5125 SPACE_DEFINED (space
) = defined
& 1;
5126 SPACE_USER_DEFINED (space
) = 1;
5127 space
->sd_seg
= seg
;
5130 #ifdef obj_set_section_attributes
5131 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5137 /* Handle a .SPACE pseudo-op; this switches the current space to the
5138 given space, creating the new space if necessary. */
5144 char *name
, c
, *space_name
, *save_s
;
5146 sd_chain_struct
*sd_chain
;
5148 if (within_procedure
)
5150 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5151 ignore_rest_of_line ();
5155 /* Check for some of the predefined spaces. FIXME: most of the code
5156 below is repeated several times, can we extract the common parts
5157 and place them into a subroutine or something similar? */
5158 /* FIXME Is this (and the next IF stmt) really right?
5159 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5160 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5162 input_line_pointer
+= 6;
5163 sd_chain
= is_defined_space ("$TEXT$");
5164 if (sd_chain
== NULL
)
5165 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5166 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5167 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5169 current_space
= sd_chain
;
5170 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5172 = pa_subsegment_to_subspace (text_section
,
5173 sd_chain
->sd_last_subseg
);
5174 demand_empty_rest_of_line ();
5177 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5179 input_line_pointer
+= 9;
5180 sd_chain
= is_defined_space ("$PRIVATE$");
5181 if (sd_chain
== NULL
)
5182 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5183 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5184 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5186 current_space
= sd_chain
;
5187 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5189 = pa_subsegment_to_subspace (data_section
,
5190 sd_chain
->sd_last_subseg
);
5191 demand_empty_rest_of_line ();
5194 if (!strncasecmp (input_line_pointer
,
5195 GDB_DEBUG_SPACE_NAME
,
5196 strlen (GDB_DEBUG_SPACE_NAME
)))
5198 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5199 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5200 if (sd_chain
== NULL
)
5201 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5202 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5203 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5205 current_space
= sd_chain
;
5208 asection
*gdb_section
5209 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5211 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5213 = pa_subsegment_to_subspace (gdb_section
,
5214 sd_chain
->sd_last_subseg
);
5216 demand_empty_rest_of_line ();
5220 /* It could be a space specified by number. */
5222 save_s
= input_line_pointer
;
5223 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5225 if (sd_chain
= pa_find_space_by_number (temp
))
5227 current_space
= sd_chain
;
5229 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5231 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5232 sd_chain
->sd_last_subseg
);
5233 demand_empty_rest_of_line ();
5238 /* Not a number, attempt to create a new space. */
5240 input_line_pointer
= save_s
;
5241 name
= input_line_pointer
;
5242 c
= get_symbol_end ();
5243 space_name
= xmalloc (strlen (name
) + 1);
5244 strcpy (space_name
, name
);
5245 *input_line_pointer
= c
;
5247 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5248 current_space
= sd_chain
;
5250 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5251 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5252 sd_chain
->sd_last_subseg
);
5253 demand_empty_rest_of_line ();
5257 /* Switch to a new space. (I think). FIXME. */
5266 sd_chain_struct
*space
;
5268 name
= input_line_pointer
;
5269 c
= get_symbol_end ();
5270 space
= is_defined_space (name
);
5274 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5277 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5279 *input_line_pointer
= c
;
5280 demand_empty_rest_of_line ();
5283 /* If VALUE is an exact power of two between zero and 2^31, then
5284 return log2 (VALUE). Else return -1. */
5292 while ((1 << shift
) != value
&& shift
< 32)
5301 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5302 given subspace, creating the new subspace if necessary.
5304 FIXME. Should mirror pa_space more closely, in particular how
5305 they're broken up into subroutines. */
5308 pa_subspace (unused
)
5311 char *name
, *ss_name
, *alias
, c
;
5312 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5313 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5314 sd_chain_struct
*space
;
5315 ssd_chain_struct
*ssd
;
5318 if (within_procedure
)
5320 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5321 ignore_rest_of_line ();
5325 name
= input_line_pointer
;
5326 c
= get_symbol_end ();
5327 ss_name
= xmalloc (strlen (name
) + 1);
5328 strcpy (ss_name
, name
);
5329 *input_line_pointer
= c
;
5331 /* Load default values. */
5344 space
= current_space
;
5345 ssd
= is_defined_subspace (ss_name
);
5346 /* Allow user to override the builtin attributes of subspaces. But
5347 only allow the attributes to be changed once! */
5348 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5350 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5351 if (!is_end_of_statement ())
5352 as_warn ("Parameters of an existing subspace can\'t be modified");
5353 demand_empty_rest_of_line ();
5358 /* A new subspace. Load default values if it matches one of
5359 the builtin subspaces. */
5361 while (pa_def_subspaces
[i
].name
)
5363 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5365 loadable
= pa_def_subspaces
[i
].loadable
;
5366 common
= pa_def_subspaces
[i
].common
;
5367 dup_common
= pa_def_subspaces
[i
].dup_common
;
5368 code_only
= pa_def_subspaces
[i
].code_only
;
5369 zero
= pa_def_subspaces
[i
].zero
;
5370 space_index
= pa_def_subspaces
[i
].space_index
;
5371 alignment
= pa_def_subspaces
[i
].alignment
;
5372 quadrant
= pa_def_subspaces
[i
].quadrant
;
5373 access
= pa_def_subspaces
[i
].access
;
5374 sort
= pa_def_subspaces
[i
].sort
;
5375 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5376 alias
= pa_def_subspaces
[i
].alias
;
5383 /* We should be working with a new subspace now. Fill in
5384 any information as specified by the user. */
5385 if (!is_end_of_statement ())
5387 input_line_pointer
++;
5388 while (!is_end_of_statement ())
5390 name
= input_line_pointer
;
5391 c
= get_symbol_end ();
5392 if ((strncasecmp (name
, "quad", 4) == 0))
5394 *input_line_pointer
= c
;
5395 input_line_pointer
++;
5396 quadrant
= get_absolute_expression ();
5398 else if ((strncasecmp (name
, "align", 5) == 0))
5400 *input_line_pointer
= c
;
5401 input_line_pointer
++;
5402 alignment
= get_absolute_expression ();
5403 if (log2 (alignment
) == -1)
5405 as_bad ("Alignment must be a power of 2");
5409 else if ((strncasecmp (name
, "access", 6) == 0))
5411 *input_line_pointer
= c
;
5412 input_line_pointer
++;
5413 access
= get_absolute_expression ();
5415 else if ((strncasecmp (name
, "sort", 4) == 0))
5417 *input_line_pointer
= c
;
5418 input_line_pointer
++;
5419 sort
= get_absolute_expression ();
5421 else if ((strncasecmp (name
, "code_only", 9) == 0))
5423 *input_line_pointer
= c
;
5426 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5428 *input_line_pointer
= c
;
5431 else if ((strncasecmp (name
, "common", 6) == 0))
5433 *input_line_pointer
= c
;
5436 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5438 *input_line_pointer
= c
;
5441 else if ((strncasecmp (name
, "zero", 4) == 0))
5443 *input_line_pointer
= c
;
5446 else if ((strncasecmp (name
, "first", 5) == 0))
5447 as_bad ("FIRST not supported as a .SUBSPACE argument");
5449 as_bad ("Invalid .SUBSPACE argument");
5450 if (!is_end_of_statement ())
5451 input_line_pointer
++;
5455 /* Compute a reasonable set of BFD flags based on the information
5456 in the .subspace directive. */
5457 applicable
= bfd_applicable_section_flags (stdoutput
);
5460 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5463 if (common
|| dup_common
)
5464 flags
|= SEC_IS_COMMON
;
5466 /* This is a zero-filled subspace (eg BSS). */
5470 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5471 applicable
&= flags
;
5473 /* If this is an existing subspace, then we want to use the
5474 segment already associated with the subspace.
5476 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5477 lots of sections. It might be a problem in the PA ELF
5478 code, I do not know yet. For now avoid creating anything
5479 but the "standard" sections for ELF. */
5481 section
= ssd
->ssd_seg
;
5483 section
= subseg_new (alias
, 0);
5484 else if (!alias
&& USE_ALIASES
)
5486 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5487 demand_empty_rest_of_line ();
5491 section
= subseg_new (ss_name
, 0);
5493 /* Now set the flags. */
5494 bfd_set_section_flags (stdoutput
, section
, applicable
);
5496 /* Record any alignment request for this section. */
5497 record_alignment (section
, log2 (alignment
));
5499 /* Set the starting offset for this section. */
5500 bfd_set_section_vma (stdoutput
, section
,
5501 pa_subspace_start (space
, quadrant
));
5503 /* Now that all the flags are set, update an existing subspace,
5504 or create a new one. */
5507 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5508 code_only
, common
, dup_common
,
5509 sort
, zero
, access
, space_index
,
5510 alignment
, quadrant
,
5513 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5515 dup_common
, zero
, sort
,
5516 access
, space_index
,
5517 alignment
, quadrant
, section
);
5519 demand_empty_rest_of_line ();
5520 current_subspace
->ssd_seg
= section
;
5521 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5523 SUBSPACE_DEFINED (current_subspace
) = 1;
5527 /* Create default space and subspace dictionaries. */
5534 space_dict_root
= NULL
;
5535 space_dict_last
= NULL
;
5538 while (pa_def_spaces
[i
].name
)
5542 /* Pick the right name to use for the new section. */
5543 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5544 name
= pa_def_spaces
[i
].alias
;
5546 name
= pa_def_spaces
[i
].name
;
5548 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5549 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5550 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5551 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5552 pa_def_spaces
[i
].segment
, 0);
5557 while (pa_def_subspaces
[i
].name
)
5560 int applicable
, subsegment
;
5561 asection
*segment
= NULL
;
5562 sd_chain_struct
*space
;
5564 /* Pick the right name for the new section and pick the right
5565 subsegment number. */
5566 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5568 name
= pa_def_subspaces
[i
].alias
;
5569 subsegment
= pa_def_subspaces
[i
].subsegment
;
5573 name
= pa_def_subspaces
[i
].name
;
5577 /* Create the new section. */
5578 segment
= subseg_new (name
, subsegment
);
5581 /* For SOM we want to replace the standard .text, .data, and .bss
5582 sections with our own. */
5583 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5585 text_section
= segment
;
5586 applicable
= bfd_applicable_section_flags (stdoutput
);
5587 bfd_set_section_flags (stdoutput
, text_section
,
5588 applicable
& (SEC_ALLOC
| SEC_LOAD
5589 | SEC_RELOC
| SEC_CODE
5591 | SEC_HAS_CONTENTS
));
5593 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5595 data_section
= segment
;
5596 applicable
= bfd_applicable_section_flags (stdoutput
);
5597 bfd_set_section_flags (stdoutput
, data_section
,
5598 applicable
& (SEC_ALLOC
| SEC_LOAD
5600 | SEC_HAS_CONTENTS
));
5604 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5606 bss_section
= segment
;
5607 applicable
= bfd_applicable_section_flags (stdoutput
);
5608 bfd_set_section_flags (stdoutput
, bss_section
,
5609 applicable
& SEC_ALLOC
);
5612 /* Find the space associated with this subspace. */
5613 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5614 def_space_index
].segment
);
5617 as_fatal ("Internal error: Unable to find containing space for %s.",
5618 pa_def_subspaces
[i
].name
);
5621 create_new_subspace (space
, name
,
5622 pa_def_subspaces
[i
].loadable
,
5623 pa_def_subspaces
[i
].code_only
,
5624 pa_def_subspaces
[i
].common
,
5625 pa_def_subspaces
[i
].dup_common
,
5626 pa_def_subspaces
[i
].zero
,
5627 pa_def_subspaces
[i
].sort
,
5628 pa_def_subspaces
[i
].access
,
5629 pa_def_subspaces
[i
].space_index
,
5630 pa_def_subspaces
[i
].alignment
,
5631 pa_def_subspaces
[i
].quadrant
,
5639 /* Create a new space NAME, with the appropriate flags as defined
5640 by the given parameters. */
5642 static sd_chain_struct
*
5643 create_new_space (name
, spnum
, loadable
, defined
, private,
5644 sort
, seg
, user_defined
)
5654 sd_chain_struct
*chain_entry
;
5656 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5658 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5661 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5662 strcpy (SPACE_NAME (chain_entry
), name
);
5663 SPACE_DEFINED (chain_entry
) = defined
;
5664 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5665 SPACE_SPNUM (chain_entry
) = spnum
;
5667 chain_entry
->sd_seg
= seg
;
5668 chain_entry
->sd_last_subseg
= -1;
5669 chain_entry
->sd_next
= NULL
;
5671 /* Find spot for the new space based on its sort key. */
5672 if (!space_dict_last
)
5673 space_dict_last
= chain_entry
;
5675 if (space_dict_root
== NULL
)
5676 space_dict_root
= chain_entry
;
5679 sd_chain_struct
*chain_pointer
;
5680 sd_chain_struct
*prev_chain_pointer
;
5682 chain_pointer
= space_dict_root
;
5683 prev_chain_pointer
= NULL
;
5685 while (chain_pointer
)
5687 prev_chain_pointer
= chain_pointer
;
5688 chain_pointer
= chain_pointer
->sd_next
;
5691 /* At this point we've found the correct place to add the new
5692 entry. So add it and update the linked lists as appropriate. */
5693 if (prev_chain_pointer
)
5695 chain_entry
->sd_next
= chain_pointer
;
5696 prev_chain_pointer
->sd_next
= chain_entry
;
5700 space_dict_root
= chain_entry
;
5701 chain_entry
->sd_next
= chain_pointer
;
5704 if (chain_entry
->sd_next
== NULL
)
5705 space_dict_last
= chain_entry
;
5708 /* This is here to catch predefined spaces which do not get
5709 modified by the user's input. Another call is found at
5710 the bottom of pa_parse_space_stmt to handle cases where
5711 the user modifies a predefined space. */
5712 #ifdef obj_set_section_attributes
5713 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5719 /* Create a new subspace NAME, with the appropriate flags as defined
5720 by the given parameters.
5722 Add the new subspace to the subspace dictionary chain in numerical
5723 order as defined by the SORT entries. */
5725 static ssd_chain_struct
*
5726 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5727 dup_common
, is_zero
, sort
, access
, space_index
,
5728 alignment
, quadrant
, seg
)
5729 sd_chain_struct
*space
;
5731 char loadable
, code_only
, common
, dup_common
, is_zero
;
5739 ssd_chain_struct
*chain_entry
;
5741 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5743 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5745 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5746 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5748 /* Initialize subspace_defined. When we hit a .subspace directive
5749 we'll set it to 1 which "locks-in" the subspace attributes. */
5750 SUBSPACE_DEFINED (chain_entry
) = 0;
5752 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5753 chain_entry
->ssd_seg
= seg
;
5754 chain_entry
->ssd_next
= NULL
;
5756 /* Find spot for the new subspace based on its sort key. */
5757 if (space
->sd_subspaces
== NULL
)
5758 space
->sd_subspaces
= chain_entry
;
5761 ssd_chain_struct
*chain_pointer
;
5762 ssd_chain_struct
*prev_chain_pointer
;
5764 chain_pointer
= space
->sd_subspaces
;
5765 prev_chain_pointer
= NULL
;
5767 while (chain_pointer
)
5769 prev_chain_pointer
= chain_pointer
;
5770 chain_pointer
= chain_pointer
->ssd_next
;
5773 /* Now we have somewhere to put the new entry. Insert it and update
5775 if (prev_chain_pointer
)
5777 chain_entry
->ssd_next
= chain_pointer
;
5778 prev_chain_pointer
->ssd_next
= chain_entry
;
5782 space
->sd_subspaces
= chain_entry
;
5783 chain_entry
->ssd_next
= chain_pointer
;
5787 #ifdef obj_set_subsection_attributes
5788 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5795 /* Update the information for the given subspace based upon the
5796 various arguments. Return the modified subspace chain entry. */
5798 static ssd_chain_struct
*
5799 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5800 zero
, access
, space_index
, alignment
, quadrant
, section
)
5801 sd_chain_struct
*space
;
5815 ssd_chain_struct
*chain_entry
;
5817 chain_entry
= is_defined_subspace (name
);
5819 #ifdef obj_set_subsection_attributes
5820 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5827 /* Return the space chain entry for the space with the name NAME or
5828 NULL if no such space exists. */
5830 static sd_chain_struct
*
5831 is_defined_space (name
)
5834 sd_chain_struct
*chain_pointer
;
5836 for (chain_pointer
= space_dict_root
;
5838 chain_pointer
= chain_pointer
->sd_next
)
5840 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5841 return chain_pointer
;
5844 /* No mapping from segment to space was found. Return NULL. */
5848 /* Find and return the space associated with the given seg. If no mapping
5849 from the given seg to a space is found, then return NULL.
5851 Unlike subspaces, the number of spaces is not expected to grow much,
5852 so a linear exhaustive search is OK here. */
5854 static sd_chain_struct
*
5855 pa_segment_to_space (seg
)
5858 sd_chain_struct
*space_chain
;
5860 /* Walk through each space looking for the correct mapping. */
5861 for (space_chain
= space_dict_root
;
5863 space_chain
= space_chain
->sd_next
)
5865 if (space_chain
->sd_seg
== seg
)
5869 /* Mapping was not found. Return NULL. */
5873 /* Return the space chain entry for the subspace with the name NAME or
5874 NULL if no such subspace exists.
5876 Uses a linear search through all the spaces and subspaces, this may
5877 not be appropriate if we ever being placing each function in its
5880 static ssd_chain_struct
*
5881 is_defined_subspace (name
)
5884 sd_chain_struct
*space_chain
;
5885 ssd_chain_struct
*subspace_chain
;
5887 /* Walk through each space. */
5888 for (space_chain
= space_dict_root
;
5890 space_chain
= space_chain
->sd_next
)
5892 /* Walk through each subspace looking for a name which matches. */
5893 for (subspace_chain
= space_chain
->sd_subspaces
;
5895 subspace_chain
= subspace_chain
->ssd_next
)
5896 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5897 return subspace_chain
;
5900 /* Subspace wasn't found. Return NULL. */
5904 /* Find and return the subspace associated with the given seg. If no
5905 mapping from the given seg to a subspace is found, then return NULL.
5907 If we ever put each procedure/function within its own subspace
5908 (to make life easier on the compiler and linker), then this will have
5909 to become more efficient. */
5911 static ssd_chain_struct
*
5912 pa_subsegment_to_subspace (seg
, subseg
)
5916 sd_chain_struct
*space_chain
;
5917 ssd_chain_struct
*subspace_chain
;
5919 /* Walk through each space. */
5920 for (space_chain
= space_dict_root
;
5922 space_chain
= space_chain
->sd_next
)
5924 if (space_chain
->sd_seg
== seg
)
5926 /* Walk through each subspace within each space looking for
5927 the correct mapping. */
5928 for (subspace_chain
= space_chain
->sd_subspaces
;
5930 subspace_chain
= subspace_chain
->ssd_next
)
5931 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5932 return subspace_chain
;
5936 /* No mapping from subsegment to subspace found. Return NULL. */
5940 /* Given a number, try and find a space with the name number.
5942 Return a pointer to a space dictionary chain entry for the space
5943 that was found or NULL on failure. */
5945 static sd_chain_struct
*
5946 pa_find_space_by_number (number
)
5949 sd_chain_struct
*space_chain
;
5951 for (space_chain
= space_dict_root
;
5953 space_chain
= space_chain
->sd_next
)
5955 if (SPACE_SPNUM (space_chain
) == number
)
5959 /* No appropriate space found. Return NULL. */
5963 /* Return the starting address for the given subspace. If the starting
5964 address is unknown then return zero. */
5967 pa_subspace_start (space
, quadrant
)
5968 sd_chain_struct
*space
;
5971 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5972 is not correct for the PA OSF1 port. */
5973 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5975 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5981 /* FIXME. Needs documentation. */
5983 pa_next_subseg (space
)
5984 sd_chain_struct
*space
;
5987 space
->sd_last_subseg
++;
5988 return space
->sd_last_subseg
;
5991 /* Helper function for pa_stringer. Used to find the end of
5998 unsigned int c
= *s
& CHAR_MASK
;
6010 /* Handle a .STRING type pseudo-op. */
6013 pa_stringer (append_zero
)
6016 char *s
, num_buf
[4];
6020 /* Preprocess the string to handle PA-specific escape sequences.
6021 For example, \xDD where DD is a hexidecimal number should be
6022 changed to \OOO where OOO is an octal number. */
6024 /* Skip the opening quote. */
6025 s
= input_line_pointer
+ 1;
6027 while (is_a_char (c
= pa_stringer_aux (s
++)))
6034 /* Handle \x<num>. */
6037 unsigned int number
;
6042 /* Get pas the 'x'. */
6044 for (num_digit
= 0, number
= 0, dg
= *s
;
6046 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6047 || (dg
>= 'A' && dg
<= 'F'));
6051 number
= number
* 16 + dg
- '0';
6052 else if (dg
>= 'a' && dg
<= 'f')
6053 number
= number
* 16 + dg
- 'a' + 10;
6055 number
= number
* 16 + dg
- 'A' + 10;
6065 sprintf (num_buf
, "%02o", number
);
6068 sprintf (num_buf
, "%03o", number
);
6071 for (i
= 0; i
<= num_digit
; i
++)
6072 s_start
[i
] = num_buf
[i
];
6076 /* This might be a "\"", skip over the escaped char. */
6083 stringer (append_zero
);
6084 pa_undefine_label ();
6087 /* Handle a .VERSION pseudo-op. */
6094 pa_undefine_label ();
6097 /* Handle a .COPYRIGHT pseudo-op. */
6100 pa_copyright (unused
)
6104 pa_undefine_label ();
6107 /* Just like a normal cons, but when finished we have to undefine
6108 the latest space label. */
6115 pa_undefine_label ();
6118 /* Switch to the data space. As usual delete our label. */
6125 pa_undefine_label ();
6128 /* Like float_cons, but we need to undefine our label. */
6131 pa_float_cons (float_type
)
6134 float_cons (float_type
);
6135 pa_undefine_label ();
6138 /* Like s_fill, but delete our label when finished. */
6145 pa_undefine_label ();
6148 /* Like lcomm, but delete our label when finished. */
6151 pa_lcomm (needs_align
)
6154 s_lcomm (needs_align
);
6155 pa_undefine_label ();
6158 /* Like lsym, but delete our label when finished. */
6165 pa_undefine_label ();
6168 /* Switch to the text space. Like s_text, but delete our
6169 label when finished. */
6175 pa_undefine_label ();
6178 /* On the PA relocations which involve function symbols must not be
6179 adjusted. This so that the linker can know when/how to create argument
6180 relocation stubs for indirect calls and calls to static functions.
6182 FIXME. Also reject R_HPPA relocations which are 32 bits
6183 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6184 needs to generate relocations to push the addend and symbol value
6185 onto the stack, add them, then pop the value off the stack and
6186 use it in a relocation -- yuk. */
6189 hppa_fix_adjustable (fixp
)
6192 struct hppa_fix_struct
*hppa_fix
;
6194 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6196 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6199 if (fixp
->fx_addsy
== 0
6200 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6206 /* Return nonzero if the fixup in FIXP will require a relocation,
6207 even it if appears that the fixup could be completely handled
6211 hppa_force_relocation (fixp
)
6214 struct hppa_fix_struct
*hppa_fixp
;
6216 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6218 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6222 #define stub_needed(CALLER, CALLEE) \
6223 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6225 /* It is necessary to force PC-relative calls/jumps to have a relocation
6226 entry if they're going to need either a argument relocation or long
6227 call stub. FIXME. Can't we need the same for absolute calls? */
6228 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6229 && (stub_needed (((obj_symbol_type
*)
6230 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6231 hppa_fixp
->fx_arg_reloc
)))
6236 /* No need (yet) to force another relocations to be emitted. */
6240 /* Now for some ELF specific code. FIXME. */
6242 static symext_chainS
*symext_rootP
;
6243 static symext_chainS
*symext_lastP
;
6245 /* Mark the end of a function so that it's possible to compute
6246 the size of the function in hppa_elf_final_processing. */
6249 hppa_elf_mark_end_of_function ()
6251 /* ELF does not have EXIT relocations. All we do is create a
6252 temporary symbol marking the end of the function. */
6253 char *name
= (char *)
6254 xmalloc (strlen ("L$\001end_") +
6255 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6261 strcpy (name
, "L$\001end_");
6262 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6264 /* If we have a .exit followed by a .procend, then the
6265 symbol will have already been defined. */
6266 symbolP
= symbol_find (name
);
6269 /* The symbol has already been defined! This can
6270 happen if we have a .exit followed by a .procend.
6272 This is *not* an error. All we want to do is free
6273 the memory we just allocated for the name and continue. */
6278 /* symbol value should be the offset of the
6279 last instruction of the function */
6280 symbolP
= symbol_new (name
, now_seg
,
6281 (valueT
) (obstack_next_free (&frags
)
6282 - frag_now
->fr_literal
- 4),
6286 symbolP
->bsym
->flags
= BSF_LOCAL
;
6287 symbol_table_insert (symbolP
);
6291 last_call_info
->end_symbol
= symbolP
;
6293 as_bad ("Symbol '%s' could not be created.", name
);
6297 as_bad ("No memory for symbol name.");
6301 /* Do any symbol processing requested by the target-cpu or target-format. */
6304 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6306 elf_symbol_type
*symbolP
;
6309 /* Just call the ELF BFD routine. */
6310 elf_hppa_tc_symbol (abfd
, symbolP
, sym_idx
, &symext_rootP
, &symext_lastP
);
6313 /* Make sections needed by the target cpu and/or target format. */
6315 hppa_tc_make_sections (abfd
)
6318 /* Just call the ELF BFD routine. */
6319 elf_hppa_tc_make_sections (abfd
, symext_rootP
);
6322 /* For ELF, this function serves one purpose: to setup the st_size
6323 field of STT_FUNC symbols. To do this, we need to scan the
6324 call_info structure list, determining st_size in by taking the
6325 difference in the address of the beginning/end marker symbols. */
6328 elf_hppa_final_processing ()
6330 struct call_info
*call_info_pointer
;
6332 for (call_info_pointer
= call_info_root
;
6334 call_info_pointer
= call_info_pointer
->ci_next
)
6336 elf_symbol_type
*esym
6337 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6338 esym
->internal_elf_sym
.st_size
=
6339 S_GET_VALUE (call_info_pointer
->end_symbol
)
6340 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;