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;
4328 as_bad ("Invalid .CALLINFO argument: %s", name
);
4330 if (!is_end_of_statement ())
4331 input_line_pointer
++;
4334 demand_empty_rest_of_line ();
4337 /* Switch into the code subspace. */
4343 sd_chain_struct
*sdchain
;
4345 /* First time through it might be necessary to create the
4347 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4349 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4350 pa_def_spaces
[0].spnum
,
4351 pa_def_spaces
[0].loadable
,
4352 pa_def_spaces
[0].defined
,
4353 pa_def_spaces
[0].private,
4354 pa_def_spaces
[0].sort
,
4355 pa_def_spaces
[0].segment
, 0);
4358 SPACE_DEFINED (sdchain
) = 1;
4359 subseg_set (text_section
, SUBSEG_CODE
);
4360 demand_empty_rest_of_line ();
4363 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4364 the .comm pseudo-op has the following symtax:
4366 <label> .comm <length>
4368 where <label> is optional and is a symbol whose address will be the start of
4369 a block of memory <length> bytes long. <length> must be an absolute
4370 expression. <length> bytes will be allocated in the current space
4379 label_symbol_struct
*label_symbol
= pa_get_label ();
4382 symbol
= label_symbol
->lss_label
;
4387 size
= get_absolute_expression ();
4391 /* It is incorrect to check S_IS_DEFINED at this point as
4392 the symbol will *always* be defined. FIXME. How to
4393 correctly determine when this label really as been
4395 if (S_GET_VALUE (symbol
))
4397 if (S_GET_VALUE (symbol
) != size
)
4399 as_warn ("Length of .comm \"%s\" is already %d. Not changed.",
4400 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4406 S_SET_VALUE (symbol
, size
);
4407 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4408 S_SET_EXTERNAL (symbol
);
4411 demand_empty_rest_of_line ();
4414 /* Process a .END pseudo-op. */
4420 demand_empty_rest_of_line ();
4423 /* Process a .ENTER pseudo-op. This is not supported. */
4431 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4437 if (!within_procedure
)
4438 as_bad ("Misplaced .entry. Ignored.");
4441 if (!callinfo_found
)
4442 as_bad ("Missing .callinfo.");
4444 demand_empty_rest_of_line ();
4445 within_entry_exit
= TRUE
;
4448 /* SOM defers building of unwind descriptors until the link phase.
4449 The assembler is responsible for creating an R_ENTRY relocation
4450 to mark the beginning of a region and hold the unwind bits, and
4451 for creating an R_EXIT relocation to mark the end of the region.
4453 FIXME. ELF should be using the same conventions! The problem
4454 is an unwind requires too much relocation space. Hmmm. Maybe
4455 if we split the unwind bits up between the relocations which
4456 denote the entry and exit points. */
4457 if (last_call_info
->start_symbol
!= NULL
)
4459 char *where
= frag_more (0);
4461 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4462 last_call_info
->start_symbol
, (offsetT
) 0, NULL
,
4463 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4464 (char *) &last_call_info
->ci_unwind
.descriptor
);
4469 /* Handle a .EQU pseudo-op. */
4475 label_symbol_struct
*label_symbol
= pa_get_label ();
4480 symbol
= label_symbol
->lss_label
;
4481 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4482 S_SET_SEGMENT (symbol
, &bfd_abs_section
);
4487 as_bad (".REG must use a label");
4489 as_bad (".EQU must use a label");
4492 pa_undefine_label ();
4493 demand_empty_rest_of_line ();
4496 /* Helper function. Does processing for the end of a function. This
4497 usually involves creating some relocations or building special
4498 symbols to mark the end of the function. */
4505 where
= frag_more (0);
4508 /* Mark the end of the function, stuff away the location of the frag
4509 for the end of the function, and finally call pa_build_unwind_subspace
4510 to add an entry in the unwind table. */
4511 hppa_elf_mark_end_of_function ();
4512 pa_build_unwind_subspace (last_call_info
);
4514 /* SOM defers building of unwind descriptors until the link phase.
4515 The assembler is responsible for creating an R_ENTRY relocation
4516 to mark the beginning of a region and hold the unwind bits, and
4517 for creating an R_EXIT relocation to mark the end of the region.
4519 FIXME. ELF should be using the same conventions! The problem
4520 is an unwind requires too much relocation space. Hmmm. Maybe
4521 if we split the unwind bits up between the relocations which
4522 denote the entry and exit points. */
4523 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4524 last_call_info
->start_symbol
, (offsetT
) 0,
4525 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0, NULL
);
4529 /* Process a .EXIT pseudo-op. */
4535 if (!within_procedure
)
4536 as_bad (".EXIT must appear within a procedure");
4539 if (!callinfo_found
)
4540 as_bad ("Missing .callinfo");
4543 if (!within_entry_exit
)
4544 as_bad ("No .ENTRY for this .EXIT");
4547 within_entry_exit
= FALSE
;
4552 demand_empty_rest_of_line ();
4555 /* Process a .EXPORT directive. This makes functions external
4556 and provides information such as argument relocation entries
4566 name
= input_line_pointer
;
4567 c
= get_symbol_end ();
4568 /* Make sure the given symbol exists. */
4569 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4571 as_bad ("Cannot define export symbol: %s\n", name
);
4572 p
= input_line_pointer
;
4574 input_line_pointer
++;
4578 /* OK. Set the external bits and process argument relocations. */
4579 S_SET_EXTERNAL (symbol
);
4580 p
= input_line_pointer
;
4582 if (!is_end_of_statement ())
4584 input_line_pointer
++;
4585 pa_type_args (symbol
, 1);
4589 demand_empty_rest_of_line ();
4592 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4595 pa_type_args (symbolP
, is_export
)
4600 unsigned int temp
, arg_reloc
;
4601 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4602 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4604 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4607 input_line_pointer
+= 8;
4608 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4609 S_SET_SEGMENT (symbolP
, &bfd_abs_section
);
4610 type
= SYMBOL_TYPE_ABSOLUTE
;
4612 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4614 input_line_pointer
+= 4;
4615 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4616 instead one should be IMPORTing/EXPORTing ENTRY types.
4618 Complain if one tries to EXPORT a CODE type since that's never
4619 done. Both GCC and HP C still try to IMPORT CODE types, so
4620 silently fix them to be ENTRY types. */
4621 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4624 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4626 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4627 type
= SYMBOL_TYPE_ENTRY
;
4631 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4632 type
= SYMBOL_TYPE_CODE
;
4635 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4637 input_line_pointer
+= 4;
4638 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4639 type
= SYMBOL_TYPE_DATA
;
4641 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4643 input_line_pointer
+= 5;
4644 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4645 type
= SYMBOL_TYPE_ENTRY
;
4647 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4649 input_line_pointer
+= 9;
4650 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4651 type
= SYMBOL_TYPE_MILLICODE
;
4653 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4655 input_line_pointer
+= 6;
4656 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4657 type
= SYMBOL_TYPE_PLABEL
;
4659 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4661 input_line_pointer
+= 8;
4662 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4663 type
= SYMBOL_TYPE_PRI_PROG
;
4665 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4667 input_line_pointer
+= 8;
4668 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4669 type
= SYMBOL_TYPE_SEC_PROG
;
4672 /* SOM requires much more information about symbol types
4673 than BFD understands. This is how we get this information
4674 to the SOM BFD backend. */
4675 #ifdef obj_set_symbol_type
4676 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4679 /* Now that the type of the exported symbol has been handled,
4680 handle any argument relocation information. */
4681 while (!is_end_of_statement ())
4683 if (*input_line_pointer
== ',')
4684 input_line_pointer
++;
4685 name
= input_line_pointer
;
4686 c
= get_symbol_end ();
4687 /* Argument sources. */
4688 if ((strncasecmp (name
, "argw", 4) == 0))
4690 p
= input_line_pointer
;
4692 input_line_pointer
++;
4693 temp
= atoi (name
+ 4);
4694 name
= input_line_pointer
;
4695 c
= get_symbol_end ();
4696 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4697 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4698 *input_line_pointer
= c
;
4700 /* The return value. */
4701 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4703 p
= input_line_pointer
;
4705 input_line_pointer
++;
4706 name
= input_line_pointer
;
4707 c
= get_symbol_end ();
4708 arg_reloc
= pa_build_arg_reloc (name
);
4709 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4710 *input_line_pointer
= c
;
4712 /* Privelege level. */
4713 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4715 p
= input_line_pointer
;
4717 input_line_pointer
++;
4718 temp
= atoi (input_line_pointer
);
4719 c
= get_symbol_end ();
4720 *input_line_pointer
= c
;
4724 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4725 p
= input_line_pointer
;
4728 if (!is_end_of_statement ())
4729 input_line_pointer
++;
4733 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4734 assembly file must either be defined in the assembly file, or
4735 explicitly IMPORTED from another. */
4744 name
= input_line_pointer
;
4745 c
= get_symbol_end ();
4747 symbol
= symbol_find_or_make (name
);
4748 p
= input_line_pointer
;
4751 if (!is_end_of_statement ())
4753 input_line_pointer
++;
4754 pa_type_args (symbol
, 0);
4758 /* Sigh. To be compatable with the HP assembler and to help
4759 poorly written assembly code, we assign a type based on
4760 the the current segment. Note only BSF_FUNCTION really
4761 matters, we do not need to set the full SYMBOL_TYPE_* info here. */
4762 if (now_seg
== text_section
)
4763 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4765 /* If the section is undefined, then the symbol is undefined
4766 Since this is an import, leave the section undefined. */
4767 S_SET_SEGMENT (symbol
, &bfd_und_section
);
4770 demand_empty_rest_of_line ();
4773 /* Handle a .LABEL pseudo-op. */
4781 name
= input_line_pointer
;
4782 c
= get_symbol_end ();
4784 if (strlen (name
) > 0)
4787 p
= input_line_pointer
;
4792 as_warn ("Missing label name on .LABEL");
4795 if (!is_end_of_statement ())
4797 as_warn ("extra .LABEL arguments ignored.");
4798 ignore_rest_of_line ();
4800 demand_empty_rest_of_line ();
4803 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4812 /* Handle a .ORIGIN pseudo-op. */
4819 pa_undefine_label ();
4822 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4823 is for static functions. FIXME. Should share more code with .EXPORT. */
4832 name
= input_line_pointer
;
4833 c
= get_symbol_end ();
4835 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4837 as_bad ("Cannot define static symbol: %s\n", name
);
4838 p
= input_line_pointer
;
4840 input_line_pointer
++;
4844 S_CLEAR_EXTERNAL (symbol
);
4845 p
= input_line_pointer
;
4847 if (!is_end_of_statement ())
4849 input_line_pointer
++;
4850 pa_type_args (symbol
, 0);
4854 demand_empty_rest_of_line ();
4857 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4858 of a procedure from a syntatical point of view. */
4864 struct call_info
*call_info
;
4867 if (within_procedure
)
4868 as_fatal ("Nested procedures");
4870 /* Reset global variables for new procedure. */
4871 callinfo_found
= FALSE
;
4872 within_procedure
= TRUE
;
4875 Enabling
this code creates severe problems with GDB
. It appears as
if
4876 inserting linker stubs between functions within a single
.o makes GDB
4879 /* Create a new CODE subspace for each procedure if we are not
4880 using space/subspace aliases. */
4881 if (!USE_ALIASES
&& call_info_root
!= NULL
)
4883 /* Force creation of a new $CODE$ subspace; inherit attributes from
4884 the first $CODE$ subspace. */
4885 seg
= subseg_force_new ("$CODE$", 0);
4887 /* Now set the flags. */
4888 bfd_set_section_flags (stdoutput
, seg
,
4889 bfd_get_section_flags (abfd
, text_section
));
4891 /* Record any alignment request for this section. */
4892 record_alignment (seg
,
4893 bfd_get_section_alignment (stdoutput
, text_section
));
4895 /* Change the "text_section" to be our new $CODE$ subspace. */
4897 subseg_set (text_section
, 0);
4899 #ifdef obj_set_subsection_attributes
4900 /* Need a way to inherit the the access bits, sort key and quadrant
4901 from the first $CODE$ subspace. FIXME. */
4902 obj_set_subsection_attributes (seg
, current_space
->sd_seg
, 0x2c, 24, 0);
4907 /* Create another call_info structure. */
4908 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4911 as_fatal ("Cannot allocate unwind descriptor\n");
4913 bzero (call_info
, sizeof (struct call_info
));
4915 call_info
->ci_next
= NULL
;
4917 if (call_info_root
== NULL
)
4919 call_info_root
= call_info
;
4920 last_call_info
= call_info
;
4924 last_call_info
->ci_next
= call_info
;
4925 last_call_info
= call_info
;
4928 /* set up defaults on call_info structure */
4930 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4931 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4932 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4934 /* If we got a .PROC pseudo-op, we know that the function is defined
4935 locally. Make sure it gets into the symbol table. */
4937 label_symbol_struct
*label_symbol
= pa_get_label ();
4941 if (label_symbol
->lss_label
)
4943 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4944 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4948 /* The label was defined in a different segment. Fix that
4949 along with the value and associated fragment. */
4950 S_SET_SEGMENT (last_call_info
->start_symbol
, now_seg
);
4951 S_SET_VALUE (last_call_info
->start_symbol
,
4952 ((char*)obstack_next_free (&frags
)
4953 - frag_now
->fr_literal
));
4954 last_call_info
->start_symbol
->sy_frag
= frag_now
;
4959 as_bad ("Missing function name for .PROC (corrupted label chain)");
4962 last_call_info
->start_symbol
= NULL
;
4965 demand_empty_rest_of_line ();
4968 /* Process the syntatical end of a procedure. Make sure all the
4969 appropriate pseudo-ops were found within the procedure. */
4976 if (!within_procedure
)
4977 as_bad ("misplaced .procend");
4979 if (!callinfo_found
)
4980 as_bad ("Missing .callinfo for this procedure");
4982 if (within_entry_exit
)
4983 as_bad ("Missing .EXIT for a .ENTRY");
4986 /* ELF needs to mark the end of each function so that it can compute
4987 the size of the function (apparently its needed in the symbol table. */
4988 hppa_elf_mark_end_of_function ();
4991 within_procedure
= FALSE
;
4992 demand_empty_rest_of_line ();
4993 pa_undefine_label ();
4996 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4997 then create a new space entry to hold the information specified
4998 by the parameters to the .SPACE directive. */
5000 static sd_chain_struct
*
5001 pa_parse_space_stmt (space_name
, create_flag
)
5005 char *name
, *ptemp
, c
;
5006 char loadable
, defined
, private, sort
;
5008 asection
*seg
= NULL
;
5009 sd_chain_struct
*space
;
5011 /* load default values */
5017 if (strcmp (space_name
, "$TEXT$") == 0)
5019 seg
= pa_def_spaces
[0].segment
;
5020 sort
= pa_def_spaces
[0].sort
;
5022 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5024 seg
= pa_def_spaces
[1].segment
;
5025 sort
= pa_def_spaces
[1].sort
;
5028 if (!is_end_of_statement ())
5030 print_errors
= FALSE
;
5031 ptemp
= input_line_pointer
+ 1;
5032 /* First see if the space was specified as a number rather than
5033 as a name. According to the PA assembly manual the rest of
5034 the line should be ignored. */
5035 if ((spnum
= pa_parse_number (&ptemp
, 0)) >= 0)
5036 input_line_pointer
= ptemp
;
5039 while (!is_end_of_statement ())
5041 input_line_pointer
++;
5042 name
= input_line_pointer
;
5043 c
= get_symbol_end ();
5044 if ((strncasecmp (name
, "spnum", 5) == 0))
5046 *input_line_pointer
= c
;
5047 input_line_pointer
++;
5048 spnum
= get_absolute_expression ();
5050 else if ((strncasecmp (name
, "sort", 4) == 0))
5052 *input_line_pointer
= c
;
5053 input_line_pointer
++;
5054 sort
= get_absolute_expression ();
5056 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5058 *input_line_pointer
= c
;
5061 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5063 *input_line_pointer
= c
;
5066 else if ((strncasecmp (name
, "private", 7) == 0))
5068 *input_line_pointer
= c
;
5073 as_bad ("Invalid .SPACE argument");
5074 *input_line_pointer
= c
;
5075 if (!is_end_of_statement ())
5076 input_line_pointer
++;
5080 print_errors
= TRUE
;
5083 if (create_flag
&& seg
== NULL
)
5084 seg
= subseg_new (space_name
, 0);
5086 /* If create_flag is nonzero, then create the new space with
5087 the attributes computed above. Else set the values in
5088 an already existing space -- this can only happen for
5089 the first occurence of a built-in space. */
5091 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5092 private, sort
, seg
, 1);
5095 space
= is_defined_space (space_name
);
5096 SPACE_SPNUM (space
) = spnum
;
5097 SPACE_DEFINED (space
) = defined
& 1;
5098 SPACE_USER_DEFINED (space
) = 1;
5099 space
->sd_seg
= seg
;
5102 #ifdef obj_set_section_attributes
5103 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5109 /* Handle a .SPACE pseudo-op; this switches the current space to the
5110 given space, creating the new space if necessary. */
5116 char *name
, c
, *space_name
, *save_s
;
5118 sd_chain_struct
*sd_chain
;
5120 if (within_procedure
)
5122 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5123 ignore_rest_of_line ();
5127 /* Check for some of the predefined spaces. FIXME: most of the code
5128 below is repeated several times, can we extract the common parts
5129 and place them into a subroutine or something similar? */
5130 /* FIXME Is this (and the next IF stmt) really right?
5131 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5132 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5134 input_line_pointer
+= 6;
5135 sd_chain
= is_defined_space ("$TEXT$");
5136 if (sd_chain
== NULL
)
5137 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5138 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5139 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5141 current_space
= sd_chain
;
5142 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5144 = pa_subsegment_to_subspace (text_section
,
5145 sd_chain
->sd_last_subseg
);
5146 demand_empty_rest_of_line ();
5149 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5151 input_line_pointer
+= 9;
5152 sd_chain
= is_defined_space ("$PRIVATE$");
5153 if (sd_chain
== NULL
)
5154 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5155 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5156 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5158 current_space
= sd_chain
;
5159 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5161 = pa_subsegment_to_subspace (data_section
,
5162 sd_chain
->sd_last_subseg
);
5163 demand_empty_rest_of_line ();
5166 if (!strncasecmp (input_line_pointer
,
5167 GDB_DEBUG_SPACE_NAME
,
5168 strlen (GDB_DEBUG_SPACE_NAME
)))
5170 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5171 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5172 if (sd_chain
== NULL
)
5173 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5174 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5175 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5177 current_space
= sd_chain
;
5180 asection
*gdb_section
5181 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5183 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5185 = pa_subsegment_to_subspace (gdb_section
,
5186 sd_chain
->sd_last_subseg
);
5188 demand_empty_rest_of_line ();
5192 /* It could be a space specified by number. */
5194 save_s
= input_line_pointer
;
5195 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5197 if (sd_chain
= pa_find_space_by_number (temp
))
5199 current_space
= sd_chain
;
5201 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5203 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5204 sd_chain
->sd_last_subseg
);
5205 demand_empty_rest_of_line ();
5210 /* Not a number, attempt to create a new space. */
5212 input_line_pointer
= save_s
;
5213 name
= input_line_pointer
;
5214 c
= get_symbol_end ();
5215 space_name
= xmalloc (strlen (name
) + 1);
5216 strcpy (space_name
, name
);
5217 *input_line_pointer
= c
;
5219 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5220 current_space
= sd_chain
;
5222 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5223 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5224 sd_chain
->sd_last_subseg
);
5225 demand_empty_rest_of_line ();
5229 /* Switch to a new space. (I think). FIXME. */
5238 sd_chain_struct
*space
;
5240 name
= input_line_pointer
;
5241 c
= get_symbol_end ();
5242 space
= is_defined_space (name
);
5246 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5249 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5251 *input_line_pointer
= c
;
5252 demand_empty_rest_of_line ();
5255 /* If VALUE is an exact power of two between zero and 2^31, then
5256 return log2 (VALUE). Else return -1. */
5264 while ((1 << shift
) != value
&& shift
< 32)
5273 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5274 given subspace, creating the new subspace if necessary.
5276 FIXME. Should mirror pa_space more closely, in particular how
5277 they're broken up into subroutines. */
5280 pa_subspace (unused
)
5283 char *name
, *ss_name
, *alias
, c
;
5284 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5285 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5286 sd_chain_struct
*space
;
5287 ssd_chain_struct
*ssd
;
5290 if (within_procedure
)
5292 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5293 ignore_rest_of_line ();
5297 name
= input_line_pointer
;
5298 c
= get_symbol_end ();
5299 ss_name
= xmalloc (strlen (name
) + 1);
5300 strcpy (ss_name
, name
);
5301 *input_line_pointer
= c
;
5303 /* Load default values. */
5316 space
= current_space
;
5317 ssd
= is_defined_subspace (ss_name
);
5318 /* Allow user to override the builtin attributes of subspaces. But
5319 only allow the attributes to be changed once! */
5320 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5322 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5323 if (!is_end_of_statement ())
5324 as_warn ("Parameters of an existing subspace can\'t be modified");
5325 demand_empty_rest_of_line ();
5330 /* A new subspace. Load default values if it matches one of
5331 the builtin subspaces. */
5333 while (pa_def_subspaces
[i
].name
)
5335 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5337 loadable
= pa_def_subspaces
[i
].loadable
;
5338 common
= pa_def_subspaces
[i
].common
;
5339 dup_common
= pa_def_subspaces
[i
].dup_common
;
5340 code_only
= pa_def_subspaces
[i
].code_only
;
5341 zero
= pa_def_subspaces
[i
].zero
;
5342 space_index
= pa_def_subspaces
[i
].space_index
;
5343 alignment
= pa_def_subspaces
[i
].alignment
;
5344 quadrant
= pa_def_subspaces
[i
].quadrant
;
5345 access
= pa_def_subspaces
[i
].access
;
5346 sort
= pa_def_subspaces
[i
].sort
;
5347 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5348 alias
= pa_def_subspaces
[i
].alias
;
5355 /* We should be working with a new subspace now. Fill in
5356 any information as specified by the user. */
5357 if (!is_end_of_statement ())
5359 input_line_pointer
++;
5360 while (!is_end_of_statement ())
5362 name
= input_line_pointer
;
5363 c
= get_symbol_end ();
5364 if ((strncasecmp (name
, "quad", 4) == 0))
5366 *input_line_pointer
= c
;
5367 input_line_pointer
++;
5368 quadrant
= get_absolute_expression ();
5370 else if ((strncasecmp (name
, "align", 5) == 0))
5372 *input_line_pointer
= c
;
5373 input_line_pointer
++;
5374 alignment
= get_absolute_expression ();
5375 if (log2 (alignment
) == -1)
5377 as_bad ("Alignment must be a power of 2");
5381 else if ((strncasecmp (name
, "access", 6) == 0))
5383 *input_line_pointer
= c
;
5384 input_line_pointer
++;
5385 access
= get_absolute_expression ();
5387 else if ((strncasecmp (name
, "sort", 4) == 0))
5389 *input_line_pointer
= c
;
5390 input_line_pointer
++;
5391 sort
= get_absolute_expression ();
5393 else if ((strncasecmp (name
, "code_only", 9) == 0))
5395 *input_line_pointer
= c
;
5398 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5400 *input_line_pointer
= c
;
5403 else if ((strncasecmp (name
, "common", 6) == 0))
5405 *input_line_pointer
= c
;
5408 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5410 *input_line_pointer
= c
;
5413 else if ((strncasecmp (name
, "zero", 4) == 0))
5415 *input_line_pointer
= c
;
5418 else if ((strncasecmp (name
, "first", 5) == 0))
5419 as_bad ("FIRST not supported as a .SUBSPACE argument");
5421 as_bad ("Invalid .SUBSPACE argument");
5422 if (!is_end_of_statement ())
5423 input_line_pointer
++;
5427 /* Compute a reasonable set of BFD flags based on the information
5428 in the .subspace directive. */
5429 applicable
= bfd_applicable_section_flags (stdoutput
);
5432 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5435 if (common
|| dup_common
)
5436 flags
|= SEC_IS_COMMON
;
5438 /* This is a zero-filled subspace (eg BSS). */
5442 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5443 applicable
&= flags
;
5445 /* If this is an existing subspace, then we want to use the
5446 segment already associated with the subspace.
5448 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5449 lots of sections. It might be a problem in the PA ELF
5450 code, I do not know yet. For now avoid creating anything
5451 but the "standard" sections for ELF. */
5453 section
= ssd
->ssd_seg
;
5455 section
= subseg_new (alias
, 0);
5456 else if (!alias
&& USE_ALIASES
)
5458 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5459 demand_empty_rest_of_line ();
5463 section
= subseg_new (ss_name
, 0);
5465 /* Now set the flags. */
5466 bfd_set_section_flags (stdoutput
, section
, applicable
);
5468 /* Record any alignment request for this section. */
5469 record_alignment (section
, log2 (alignment
));
5471 /* Set the starting offset for this section. */
5472 bfd_set_section_vma (stdoutput
, section
,
5473 pa_subspace_start (space
, quadrant
));
5475 /* Now that all the flags are set, update an existing subspace,
5476 or create a new one. */
5479 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5480 code_only
, common
, dup_common
,
5481 sort
, zero
, access
, space_index
,
5482 alignment
, quadrant
,
5485 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5487 dup_common
, zero
, sort
,
5488 access
, space_index
,
5489 alignment
, quadrant
, section
);
5491 demand_empty_rest_of_line ();
5492 current_subspace
->ssd_seg
= section
;
5493 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5495 SUBSPACE_DEFINED (current_subspace
) = 1;
5499 /* Create default space and subspace dictionaries. */
5506 space_dict_root
= NULL
;
5507 space_dict_last
= NULL
;
5510 while (pa_def_spaces
[i
].name
)
5514 /* Pick the right name to use for the new section. */
5515 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5516 name
= pa_def_spaces
[i
].alias
;
5518 name
= pa_def_spaces
[i
].name
;
5520 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5521 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5522 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5523 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5524 pa_def_spaces
[i
].segment
, 0);
5529 while (pa_def_subspaces
[i
].name
)
5532 int applicable
, subsegment
;
5533 asection
*segment
= NULL
;
5534 sd_chain_struct
*space
;
5536 /* Pick the right name for the new section and pick the right
5537 subsegment number. */
5538 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5540 name
= pa_def_subspaces
[i
].alias
;
5541 subsegment
= pa_def_subspaces
[i
].subsegment
;
5545 name
= pa_def_subspaces
[i
].name
;
5549 /* Create the new section. */
5550 segment
= subseg_new (name
, subsegment
);
5553 /* For SOM we want to replace the standard .text, .data, and .bss
5554 sections with our own. */
5555 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5557 text_section
= segment
;
5558 applicable
= bfd_applicable_section_flags (stdoutput
);
5559 bfd_set_section_flags (stdoutput
, text_section
,
5560 applicable
& (SEC_ALLOC
| SEC_LOAD
5561 | SEC_RELOC
| SEC_CODE
5563 | SEC_HAS_CONTENTS
));
5565 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5567 data_section
= segment
;
5568 applicable
= bfd_applicable_section_flags (stdoutput
);
5569 bfd_set_section_flags (stdoutput
, data_section
,
5570 applicable
& (SEC_ALLOC
| SEC_LOAD
5572 | SEC_HAS_CONTENTS
));
5576 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5578 bss_section
= segment
;
5579 applicable
= bfd_applicable_section_flags (stdoutput
);
5580 bfd_set_section_flags (stdoutput
, bss_section
,
5581 applicable
& SEC_ALLOC
);
5584 /* Find the space associated with this subspace. */
5585 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5586 def_space_index
].segment
);
5589 as_fatal ("Internal error: Unable to find containing space for %s.",
5590 pa_def_subspaces
[i
].name
);
5593 create_new_subspace (space
, name
,
5594 pa_def_subspaces
[i
].loadable
,
5595 pa_def_subspaces
[i
].code_only
,
5596 pa_def_subspaces
[i
].common
,
5597 pa_def_subspaces
[i
].dup_common
,
5598 pa_def_subspaces
[i
].zero
,
5599 pa_def_subspaces
[i
].sort
,
5600 pa_def_subspaces
[i
].access
,
5601 pa_def_subspaces
[i
].space_index
,
5602 pa_def_subspaces
[i
].alignment
,
5603 pa_def_subspaces
[i
].quadrant
,
5611 /* Create a new space NAME, with the appropriate flags as defined
5612 by the given parameters. */
5614 static sd_chain_struct
*
5615 create_new_space (name
, spnum
, loadable
, defined
, private,
5616 sort
, seg
, user_defined
)
5626 sd_chain_struct
*chain_entry
;
5628 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5630 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5633 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5634 strcpy (SPACE_NAME (chain_entry
), name
);
5635 SPACE_DEFINED (chain_entry
) = defined
;
5636 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5637 SPACE_SPNUM (chain_entry
) = spnum
;
5639 chain_entry
->sd_seg
= seg
;
5640 chain_entry
->sd_last_subseg
= -1;
5641 chain_entry
->sd_next
= NULL
;
5643 /* Find spot for the new space based on its sort key. */
5644 if (!space_dict_last
)
5645 space_dict_last
= chain_entry
;
5647 if (space_dict_root
== NULL
)
5648 space_dict_root
= chain_entry
;
5651 sd_chain_struct
*chain_pointer
;
5652 sd_chain_struct
*prev_chain_pointer
;
5654 chain_pointer
= space_dict_root
;
5655 prev_chain_pointer
= NULL
;
5657 while (chain_pointer
)
5659 prev_chain_pointer
= chain_pointer
;
5660 chain_pointer
= chain_pointer
->sd_next
;
5663 /* At this point we've found the correct place to add the new
5664 entry. So add it and update the linked lists as appropriate. */
5665 if (prev_chain_pointer
)
5667 chain_entry
->sd_next
= chain_pointer
;
5668 prev_chain_pointer
->sd_next
= chain_entry
;
5672 space_dict_root
= chain_entry
;
5673 chain_entry
->sd_next
= chain_pointer
;
5676 if (chain_entry
->sd_next
== NULL
)
5677 space_dict_last
= chain_entry
;
5680 /* This is here to catch predefined spaces which do not get
5681 modified by the user's input. Another call is found at
5682 the bottom of pa_parse_space_stmt to handle cases where
5683 the user modifies a predefined space. */
5684 #ifdef obj_set_section_attributes
5685 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5691 /* Create a new subspace NAME, with the appropriate flags as defined
5692 by the given parameters.
5694 Add the new subspace to the subspace dictionary chain in numerical
5695 order as defined by the SORT entries. */
5697 static ssd_chain_struct
*
5698 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5699 dup_common
, is_zero
, sort
, access
, space_index
,
5700 alignment
, quadrant
, seg
)
5701 sd_chain_struct
*space
;
5703 char loadable
, code_only
, common
, dup_common
, is_zero
;
5711 ssd_chain_struct
*chain_entry
;
5713 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5715 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5717 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5718 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5720 /* Initialize subspace_defined. When we hit a .subspace directive
5721 we'll set it to 1 which "locks-in" the subspace attributes. */
5722 SUBSPACE_DEFINED (chain_entry
) = 0;
5724 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5725 chain_entry
->ssd_seg
= seg
;
5726 chain_entry
->ssd_next
= NULL
;
5728 /* Find spot for the new subspace based on its sort key. */
5729 if (space
->sd_subspaces
== NULL
)
5730 space
->sd_subspaces
= chain_entry
;
5733 ssd_chain_struct
*chain_pointer
;
5734 ssd_chain_struct
*prev_chain_pointer
;
5736 chain_pointer
= space
->sd_subspaces
;
5737 prev_chain_pointer
= NULL
;
5739 while (chain_pointer
)
5741 prev_chain_pointer
= chain_pointer
;
5742 chain_pointer
= chain_pointer
->ssd_next
;
5745 /* Now we have somewhere to put the new entry. Insert it and update
5747 if (prev_chain_pointer
)
5749 chain_entry
->ssd_next
= chain_pointer
;
5750 prev_chain_pointer
->ssd_next
= chain_entry
;
5754 space
->sd_subspaces
= chain_entry
;
5755 chain_entry
->ssd_next
= chain_pointer
;
5759 #ifdef obj_set_subsection_attributes
5760 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5767 /* Update the information for the given subspace based upon the
5768 various arguments. Return the modified subspace chain entry. */
5770 static ssd_chain_struct
*
5771 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5772 zero
, access
, space_index
, alignment
, quadrant
, section
)
5773 sd_chain_struct
*space
;
5787 ssd_chain_struct
*chain_entry
;
5789 chain_entry
= is_defined_subspace (name
);
5791 #ifdef obj_set_subsection_attributes
5792 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5799 /* Return the space chain entry for the space with the name NAME or
5800 NULL if no such space exists. */
5802 static sd_chain_struct
*
5803 is_defined_space (name
)
5806 sd_chain_struct
*chain_pointer
;
5808 for (chain_pointer
= space_dict_root
;
5810 chain_pointer
= chain_pointer
->sd_next
)
5812 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5813 return chain_pointer
;
5816 /* No mapping from segment to space was found. Return NULL. */
5820 /* Find and return the space associated with the given seg. If no mapping
5821 from the given seg to a space is found, then return NULL.
5823 Unlike subspaces, the number of spaces is not expected to grow much,
5824 so a linear exhaustive search is OK here. */
5826 static sd_chain_struct
*
5827 pa_segment_to_space (seg
)
5830 sd_chain_struct
*space_chain
;
5832 /* Walk through each space looking for the correct mapping. */
5833 for (space_chain
= space_dict_root
;
5835 space_chain
= space_chain
->sd_next
)
5837 if (space_chain
->sd_seg
== seg
)
5841 /* Mapping was not found. Return NULL. */
5845 /* Return the space chain entry for the subspace with the name NAME or
5846 NULL if no such subspace exists.
5848 Uses a linear search through all the spaces and subspaces, this may
5849 not be appropriate if we ever being placing each function in its
5852 static ssd_chain_struct
*
5853 is_defined_subspace (name
)
5856 sd_chain_struct
*space_chain
;
5857 ssd_chain_struct
*subspace_chain
;
5859 /* Walk through each space. */
5860 for (space_chain
= space_dict_root
;
5862 space_chain
= space_chain
->sd_next
)
5864 /* Walk through each subspace looking for a name which matches. */
5865 for (subspace_chain
= space_chain
->sd_subspaces
;
5867 subspace_chain
= subspace_chain
->ssd_next
)
5868 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5869 return subspace_chain
;
5872 /* Subspace wasn't found. Return NULL. */
5876 /* Find and return the subspace associated with the given seg. If no
5877 mapping from the given seg to a subspace is found, then return NULL.
5879 If we ever put each procedure/function within its own subspace
5880 (to make life easier on the compiler and linker), then this will have
5881 to become more efficient. */
5883 static ssd_chain_struct
*
5884 pa_subsegment_to_subspace (seg
, subseg
)
5888 sd_chain_struct
*space_chain
;
5889 ssd_chain_struct
*subspace_chain
;
5891 /* Walk through each space. */
5892 for (space_chain
= space_dict_root
;
5894 space_chain
= space_chain
->sd_next
)
5896 if (space_chain
->sd_seg
== seg
)
5898 /* Walk through each subspace within each space looking for
5899 the correct mapping. */
5900 for (subspace_chain
= space_chain
->sd_subspaces
;
5902 subspace_chain
= subspace_chain
->ssd_next
)
5903 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5904 return subspace_chain
;
5908 /* No mapping from subsegment to subspace found. Return NULL. */
5912 /* Given a number, try and find a space with the name number.
5914 Return a pointer to a space dictionary chain entry for the space
5915 that was found or NULL on failure. */
5917 static sd_chain_struct
*
5918 pa_find_space_by_number (number
)
5921 sd_chain_struct
*space_chain
;
5923 for (space_chain
= space_dict_root
;
5925 space_chain
= space_chain
->sd_next
)
5927 if (SPACE_SPNUM (space_chain
) == number
)
5931 /* No appropriate space found. Return NULL. */
5935 /* Return the starting address for the given subspace. If the starting
5936 address is unknown then return zero. */
5939 pa_subspace_start (space
, quadrant
)
5940 sd_chain_struct
*space
;
5943 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5944 is not correct for the PA OSF1 port. */
5945 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5947 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5953 /* FIXME. Needs documentation. */
5955 pa_next_subseg (space
)
5956 sd_chain_struct
*space
;
5959 space
->sd_last_subseg
++;
5960 return space
->sd_last_subseg
;
5963 /* Helper function for pa_stringer. Used to find the end of
5970 unsigned int c
= *s
& CHAR_MASK
;
5982 /* Handle a .STRING type pseudo-op. */
5985 pa_stringer (append_zero
)
5988 char *s
, num_buf
[4];
5992 /* Preprocess the string to handle PA-specific escape sequences.
5993 For example, \xDD where DD is a hexidecimal number should be
5994 changed to \OOO where OOO is an octal number. */
5996 /* Skip the opening quote. */
5997 s
= input_line_pointer
+ 1;
5999 while (is_a_char (c
= pa_stringer_aux (s
++)))
6006 /* Handle \x<num>. */
6009 unsigned int number
;
6014 /* Get pas the 'x'. */
6016 for (num_digit
= 0, number
= 0, dg
= *s
;
6018 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6019 || (dg
>= 'A' && dg
<= 'F'));
6023 number
= number
* 16 + dg
- '0';
6024 else if (dg
>= 'a' && dg
<= 'f')
6025 number
= number
* 16 + dg
- 'a' + 10;
6027 number
= number
* 16 + dg
- 'A' + 10;
6037 sprintf (num_buf
, "%02o", number
);
6040 sprintf (num_buf
, "%03o", number
);
6043 for (i
= 0; i
<= num_digit
; i
++)
6044 s_start
[i
] = num_buf
[i
];
6048 /* This might be a "\"", skip over the escaped char. */
6055 stringer (append_zero
);
6056 pa_undefine_label ();
6059 /* Handle a .VERSION pseudo-op. */
6066 pa_undefine_label ();
6069 /* Handle a .COPYRIGHT pseudo-op. */
6072 pa_copyright (unused
)
6076 pa_undefine_label ();
6079 /* Just like a normal cons, but when finished we have to undefine
6080 the latest space label. */
6087 pa_undefine_label ();
6090 /* Switch to the data space. As usual delete our label. */
6097 pa_undefine_label ();
6100 /* Like float_cons, but we need to undefine our label. */
6103 pa_float_cons (float_type
)
6106 float_cons (float_type
);
6107 pa_undefine_label ();
6110 /* Like s_fill, but delete our label when finished. */
6117 pa_undefine_label ();
6120 /* Like lcomm, but delete our label when finished. */
6123 pa_lcomm (needs_align
)
6126 s_lcomm (needs_align
);
6127 pa_undefine_label ();
6130 /* Like lsym, but delete our label when finished. */
6137 pa_undefine_label ();
6140 /* Switch to the text space. Like s_text, but delete our
6141 label when finished. */
6147 pa_undefine_label ();
6150 /* On the PA relocations which involve function symbols must not be
6151 adjusted. This so that the linker can know when/how to create argument
6152 relocation stubs for indirect calls and calls to static functions.
6154 FIXME. Also reject R_HPPA relocations which are 32 bits
6155 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6156 needs to generate relocations to push the addend and symbol value
6157 onto the stack, add them, then pop the value off the stack and
6158 use it in a relocation -- yuk. */
6161 hppa_fix_adjustable (fixp
)
6164 struct hppa_fix_struct
*hppa_fix
;
6166 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6168 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6171 if (fixp
->fx_addsy
== 0
6172 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6178 /* Return nonzero if the fixup in FIXP will require a relocation,
6179 even it if appears that the fixup could be completely handled
6183 hppa_force_relocation (fixp
)
6186 struct hppa_fix_struct
*hppa_fixp
;
6188 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6190 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6194 #define stub_needed(CALLER, CALLEE) \
6195 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6197 /* It is necessary to force PC-relative calls/jumps to have a relocation
6198 entry if they're going to need either a argument relocation or long
6199 call stub. FIXME. Can't we need the same for absolute calls? */
6200 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6201 && (stub_needed (((obj_symbol_type
*)
6202 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6203 hppa_fixp
->fx_arg_reloc
)))
6208 /* No need (yet) to force another relocations to be emitted. */
6212 /* Now for some ELF specific code. FIXME. */
6214 static symext_chainS
*symext_rootP
;
6215 static symext_chainS
*symext_lastP
;
6217 /* Mark the end of a function so that it's possible to compute
6218 the size of the function in hppa_elf_final_processing. */
6221 hppa_elf_mark_end_of_function ()
6223 /* ELF does not have EXIT relocations. All we do is create a
6224 temporary symbol marking the end of the function. */
6225 char *name
= (char *)
6226 xmalloc (strlen ("L$\001end_") +
6227 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6233 strcpy (name
, "L$\001end_");
6234 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6236 /* If we have a .exit followed by a .procend, then the
6237 symbol will have already been defined. */
6238 symbolP
= symbol_find (name
);
6241 /* The symbol has already been defined! This can
6242 happen if we have a .exit followed by a .procend.
6244 This is *not* an error. All we want to do is free
6245 the memory we just allocated for the name and continue. */
6250 /* symbol value should be the offset of the
6251 last instruction of the function */
6252 symbolP
= symbol_new (name
, now_seg
,
6253 (valueT
) (obstack_next_free (&frags
)
6254 - frag_now
->fr_literal
- 4),
6258 symbolP
->bsym
->flags
= BSF_LOCAL
;
6259 symbol_table_insert (symbolP
);
6263 last_call_info
->end_symbol
= symbolP
;
6265 as_bad ("Symbol '%s' could not be created.", name
);
6269 as_bad ("No memory for symbol name.");
6273 /* Do any symbol processing requested by the target-cpu or target-format. */
6276 hppa_tc_symbol (abfd
, symbolP
, sym_idx
)
6278 elf_symbol_type
*symbolP
;
6281 /* Just call the ELF BFD routine. */
6282 elf_hppa_tc_symbol (abfd
, symbolP
, sym_idx
, &symext_rootP
, &symext_lastP
);
6285 /* Make sections needed by the target cpu and/or target format. */
6287 hppa_tc_make_sections (abfd
)
6290 /* Just call the ELF BFD routine. */
6291 elf_hppa_tc_make_sections (abfd
, symext_rootP
);
6294 /* For ELF, this function serves one purpose: to setup the st_size
6295 field of STT_FUNC symbols. To do this, we need to scan the
6296 call_info structure list, determining st_size in by taking the
6297 difference in the address of the beginning/end marker symbols. */
6300 elf_hppa_final_processing ()
6302 struct call_info
*call_info_pointer
;
6304 for (call_info_pointer
= call_info_root
;
6306 call_info_pointer
= call_info_pointer
->ci_next
)
6308 elf_symbol_type
*esym
6309 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6310 esym
->internal_elf_sym
.st_size
=
6311 S_GET_VALUE (call_info_pointer
->end_symbol
)
6312 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;