1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989, 1996 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "bfd/libhppa.h"
31 #include "bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".PARISC.unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type
;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type
;
87 /* This apparently isn't in older versions of hpux reloc.h. */
89 #define R_DLT_REL 0x78
93 /* Various structures and types used internally in tc-hppa.c. */
95 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
99 unsigned int cannot_unwind
:1;
100 unsigned int millicode
:1;
101 unsigned int millicode_save_rest
:1;
102 unsigned int region_desc
:2;
103 unsigned int save_sr
:2;
104 unsigned int entry_fr
:4;
105 unsigned int entry_gr
:5;
106 unsigned int args_stored
:1;
107 unsigned int call_fr
:5;
108 unsigned int call_gr
:5;
109 unsigned int save_sp
:1;
110 unsigned int save_rp
:1;
111 unsigned int save_rp_in_frame
:1;
112 unsigned int extn_ptr_defined
:1;
113 unsigned int cleanup_defined
:1;
115 unsigned int hpe_interrupt_marker
:1;
116 unsigned int hpux_interrupt_marker
:1;
117 unsigned int reserved
:3;
118 unsigned int frame_size
:27;
123 /* Starting and ending offsets of the region described by
125 unsigned int start_offset
;
126 unsigned int end_offset
;
127 struct unwind_desc descriptor
;
130 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
131 control the entry and exit code they generate. It is also used in
132 creation of the correct stack unwind descriptors.
134 NOTE: GAS does not support .enter and .leave for the generation of
135 prologues and epilogues. FIXME.
137 The fields in structure roughly correspond to the arguments available on the
138 .callinfo pseudo-op. */
142 /* The unwind descriptor being built. */
143 struct unwind_table ci_unwind
;
145 /* Name of this function. */
146 symbolS
*start_symbol
;
148 /* (temporary) symbol used to mark the end of this function. */
151 /* Next entry in the chain. */
152 struct call_info
*ci_next
;
155 /* Operand formats for FP instructions. Note not all FP instructions
156 allow all four formats to be used (for example fmpysub only allows
160 SGL
, DBL
, ILLEGAL_FMT
, QUAD
164 /* This fully describes the symbol types which may be attached to
165 an EXPORT or IMPORT directive. Only SOM uses this formation
166 (ELF has no need for it). */
170 SYMBOL_TYPE_ABSOLUTE
,
174 SYMBOL_TYPE_MILLICODE
,
176 SYMBOL_TYPE_PRI_PROG
,
177 SYMBOL_TYPE_SEC_PROG
,
181 /* This structure contains information needed to assemble
182 individual instructions. */
185 /* Holds the opcode after parsing by pa_ip. */
186 unsigned long opcode
;
188 /* Holds an expression associated with the current instruction. */
191 /* Does this instruction use PC-relative addressing. */
194 /* Floating point formats for operand1 and operand2. */
195 fp_operand_format fpof1
;
196 fp_operand_format fpof2
;
198 /* Holds the field selector for this instruction
199 (for example L%, LR%, etc). */
202 /* Holds any argument relocation bits associated with this
203 instruction. (instruction should be some sort of call). */
206 /* The format specification for this instruction. */
209 /* The relocation (if any) associated with this instruction. */
213 /* PA-89 floating point registers are arranged like this:
216 +--------------+--------------+
217 | 0 or 16L | 16 or 16R |
218 +--------------+--------------+
219 | 1 or 17L | 17 or 17R |
220 +--------------+--------------+
228 +--------------+--------------+
229 | 14 or 30L | 30 or 30R |
230 +--------------+--------------+
231 | 15 or 31L | 31 or 31R |
232 +--------------+--------------+
235 The following is a version of pa_parse_number that
236 handles the L/R notation and returns the correct
237 value to put into the instruction register field.
238 The correct value to put into the instruction is
239 encoded in the structure 'pa_11_fp_reg_struct'. */
241 struct pa_11_fp_reg_struct
243 /* The register number. */
250 /* Additional information needed to build argument relocation stubs. */
253 /* The argument relocation specification. */
254 unsigned int arg_reloc
;
256 /* Number of arguments. */
257 unsigned int arg_count
;
260 /* This structure defines an entry in the subspace dictionary
263 struct subspace_dictionary_chain
265 /* Nonzero if this space has been defined by the user code. */
266 unsigned int ssd_defined
;
268 /* Name of this subspace. */
271 /* GAS segment and subsegment associated with this subspace. */
275 /* Next space in the subspace dictionary chain. */
276 struct subspace_dictionary_chain
*ssd_next
;
279 typedef struct subspace_dictionary_chain ssd_chain_struct
;
281 /* This structure defines an entry in the subspace dictionary
284 struct space_dictionary_chain
286 /* Nonzero if this space has been defined by the user code or
287 as a default space. */
288 unsigned int sd_defined
;
290 /* Nonzero if this spaces has been defined by the user code. */
291 unsigned int sd_user_defined
;
293 /* The space number (or index). */
294 unsigned int sd_spnum
;
296 /* The name of this subspace. */
299 /* GAS segment to which this subspace corresponds. */
302 /* Current subsegment number being used. */
305 /* The chain of subspaces contained within this space. */
306 ssd_chain_struct
*sd_subspaces
;
308 /* The next entry in the space dictionary chain. */
309 struct space_dictionary_chain
*sd_next
;
312 typedef struct space_dictionary_chain sd_chain_struct
;
314 /* Structure for previous label tracking. Needed so that alignments,
315 callinfo declarations, etc can be easily attached to a particular
317 typedef struct label_symbol_struct
319 struct symbol
*lss_label
;
320 sd_chain_struct
*lss_space
;
321 struct label_symbol_struct
*lss_next
;
325 /* This structure defines attributes of the default subspace
326 dictionary entries. */
328 struct default_subspace_dict
330 /* Name of the subspace. */
333 /* FIXME. Is this still needed? */
336 /* Nonzero if this subspace is loadable. */
339 /* Nonzero if this subspace contains only code. */
342 /* Nonzero if this is a common subspace. */
345 /* Nonzero if this is a common subspace which allows symbols
346 to be multiply defined. */
349 /* Nonzero if this subspace should be zero filled. */
352 /* Sort key for this subspace. */
355 /* Access control bits for this subspace. Can represent RWX access
356 as well as privilege level changes for gateways. */
359 /* Index of containing space. */
362 /* Alignment (in bytes) of this subspace. */
365 /* Quadrant within space where this subspace should be loaded. */
368 /* An index into the default spaces array. */
371 /* An alias for this section (or NULL if no alias exists). */
374 /* Subsegment associated with this subspace. */
378 /* This structure defines attributes of the default space
379 dictionary entries. */
381 struct default_space_dict
383 /* Name of the space. */
386 /* Space number. It is possible to identify spaces within
387 assembly code numerically! */
390 /* Nonzero if this space is loadable. */
393 /* Nonzero if this space is "defined". FIXME is still needed */
396 /* Nonzero if this space can not be shared. */
399 /* Sort key for this space. */
402 /* Segment associated with this space. */
405 /* An alias for this section (or NULL if no alias exists). */
409 /* Extra information needed to perform fixups (relocations) on the PA. */
410 struct hppa_fix_struct
412 /* The field selector. */
413 enum hppa_reloc_field_selector_type fx_r_field
;
418 /* Format of fixup. */
421 /* Argument relocation bits. */
424 /* The segment this fixup appears in. */
428 /* Structure to hold information about predefined registers. */
436 /* This structure defines the mapping from a FP condition string
437 to a condition number which can be recorded in an instruction. */
444 /* This structure defines a mapping from a field selector
445 string to a field selector type. */
446 struct selector_entry
452 /* Prototypes for functions local to tc-hppa.c. */
454 static void pa_check_current_space_and_subspace
PARAMS ((void));
455 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
456 static void pa_cons
PARAMS ((int));
457 static void pa_data
PARAMS ((int));
458 static void pa_float_cons
PARAMS ((int));
459 static void pa_fill
PARAMS ((int));
460 static void pa_lcomm
PARAMS ((int));
461 static void pa_lsym
PARAMS ((int));
462 static void pa_stringer
PARAMS ((int));
463 static void pa_text
PARAMS ((int));
464 static void pa_version
PARAMS ((int));
465 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
466 static int get_expression
PARAMS ((char *));
467 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
468 static int evaluate_absolute
PARAMS ((struct pa_it
*));
469 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
470 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
471 static int pa_parse_nullif
PARAMS ((char **));
472 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
473 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
475 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
476 static void pa_align
PARAMS ((int));
477 static void pa_block
PARAMS ((int));
478 static void pa_brtab
PARAMS ((int));
479 static void pa_call
PARAMS ((int));
480 static void pa_call_args
PARAMS ((struct call_desc
*));
481 static void pa_callinfo
PARAMS ((int));
482 static void pa_code
PARAMS ((int));
483 static void pa_comm
PARAMS ((int));
484 static void pa_copyright
PARAMS ((int));
485 static void pa_end
PARAMS ((int));
486 static void pa_enter
PARAMS ((int));
487 static void pa_entry
PARAMS ((int));
488 static void pa_equ
PARAMS ((int));
489 static void pa_exit
PARAMS ((int));
490 static void pa_export
PARAMS ((int));
491 static void pa_type_args
PARAMS ((symbolS
*, int));
492 static void pa_import
PARAMS ((int));
493 static void pa_label
PARAMS ((int));
494 static void pa_leave
PARAMS ((int));
495 static void pa_origin
PARAMS ((int));
496 static void pa_proc
PARAMS ((int));
497 static void pa_procend
PARAMS ((int));
498 static void pa_space
PARAMS ((int));
499 static void pa_spnum
PARAMS ((int));
500 static void pa_subspace
PARAMS ((int));
501 static void pa_param
PARAMS ((int));
502 static void pa_undefine_label
PARAMS ((void));
503 static int need_pa11_opcode
PARAMS ((struct pa_it
*,
504 struct pa_11_fp_reg_struct
*));
505 static int pa_parse_number
PARAMS ((char **, struct pa_11_fp_reg_struct
*));
506 static label_symbol_struct
*pa_get_label
PARAMS ((void));
507 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, int,
510 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
515 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
516 char *, int, int, int,
520 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
521 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
522 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
523 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
525 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
526 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
527 static void pa_ip
PARAMS ((char *));
528 static void fix_new_hppa
PARAMS ((fragS
*, int, int, symbolS
*,
529 long, expressionS
*, int,
530 bfd_reloc_code_real_type
,
531 enum hppa_reloc_field_selector_type
,
533 static int is_end_of_statement
PARAMS ((void));
534 static int reg_name_search
PARAMS ((char *));
535 static int pa_chk_field_selector
PARAMS ((char **));
536 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
537 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
538 static void process_exit
PARAMS ((void));
539 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
540 static int log2
PARAMS ((int));
541 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
542 static unsigned int pa_stringer_aux
PARAMS ((char *));
543 static void pa_spaces_begin
PARAMS ((void));
544 static void hppa_elf_mark_end_of_function
PARAMS ((void));
546 /* File and gloally scoped variable declarations. */
548 /* Root and final entry in the space chain. */
549 static sd_chain_struct
*space_dict_root
;
550 static sd_chain_struct
*space_dict_last
;
552 /* The current space and subspace. */
553 static sd_chain_struct
*current_space
;
554 static ssd_chain_struct
*current_subspace
;
556 /* Root of the call_info chain. */
557 static struct call_info
*call_info_root
;
559 /* The last call_info (for functions) structure
560 seen so it can be associated with fixups and
562 static struct call_info
*last_call_info
;
564 /* The last call description (for actual calls). */
565 static struct call_desc last_call_desc
;
567 /* Jumps are always the same size -- one instruction. */
568 int md_short_jump_size
= 4;
569 int md_long_jump_size
= 4;
571 /* handle of the OPCODE hash table */
572 static struct hash_control
*op_hash
= NULL
;
574 /* This array holds the chars that always start a comment. If the
575 pre-processor is disabled, these aren't very useful. */
576 const char comment_chars
[] = ";";
578 /* Table of pseudo ops for the PA. FIXME -- how many of these
579 are now redundant with the overall GAS and the object file
581 const pseudo_typeS md_pseudo_table
[] =
583 /* align pseudo-ops on the PA specify the actual alignment requested,
584 not the log2 of the requested alignment. */
585 {"align", pa_align
, 8},
586 {"begin_brtab", pa_brtab
, 1},
587 {"block", pa_block
, 1},
588 {"blockz", pa_block
, 0},
589 {"byte", pa_cons
, 1},
590 {"call", pa_call
, 0},
591 {"callinfo", pa_callinfo
, 0},
592 {"code", pa_code
, 0},
593 {"comm", pa_comm
, 0},
594 {"copyright", pa_copyright
, 0},
595 {"data", pa_data
, 0},
596 {"double", pa_float_cons
, 'd'},
598 {"end_brtab", pa_brtab
, 0},
599 {"enter", pa_enter
, 0},
600 {"entry", pa_entry
, 0},
602 {"exit", pa_exit
, 0},
603 {"export", pa_export
, 0},
604 {"fill", pa_fill
, 0},
605 {"float", pa_float_cons
, 'f'},
606 {"half", pa_cons
, 2},
607 {"import", pa_import
, 0},
609 {"label", pa_label
, 0},
610 {"lcomm", pa_lcomm
, 0},
611 {"leave", pa_leave
, 0},
612 {"long", pa_cons
, 4},
613 {"lsym", pa_lsym
, 0},
614 {"nsubspa", pa_subspace
, 1},
615 {"octa", pa_cons
, 16},
616 {"org", pa_origin
, 0},
617 {"origin", pa_origin
, 0},
618 {"param", pa_param
, 0},
619 {"proc", pa_proc
, 0},
620 {"procend", pa_procend
, 0},
621 {"quad", pa_cons
, 8},
623 {"short", pa_cons
, 2},
624 {"single", pa_float_cons
, 'f'},
625 {"space", pa_space
, 0},
626 {"spnum", pa_spnum
, 0},
627 {"string", pa_stringer
, 0},
628 {"stringz", pa_stringer
, 1},
629 {"subspa", pa_subspace
, 0},
630 {"text", pa_text
, 0},
631 {"version", pa_version
, 0},
632 {"word", pa_cons
, 4},
636 /* This array holds the chars that only start a comment at the beginning of
637 a line. If the line seems to have the form '# 123 filename'
638 .line and .file directives will appear in the pre-processed output.
640 Note that input_file.c hand checks for '#' at the beginning of the
641 first line of the input file. This is because the compiler outputs
642 #NO_APP at the beginning of its output.
644 Also note that '/*' will always start a comment. */
645 const char line_comment_chars
[] = "#";
647 /* This array holds the characters which act as line separators. */
648 const char line_separator_chars
[] = "!";
650 /* Chars that can be used to separate mant from exp in floating point nums. */
651 const char EXP_CHARS
[] = "eE";
653 /* Chars that mean this number is a floating point constant.
654 As in 0f12.456 or 0d1.2345e12.
656 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
657 changed in read.c. Ideally it shouldn't hae to know abou it at
658 all, but nothing is ideal around here. */
659 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
661 static struct pa_it the_insn
;
663 /* Points to the end of an expression just parsed by get_expressoin
664 and friends. FIXME. This shouldn't be handled with a file-global
666 static char *expr_end
;
668 /* Nonzero if a .callinfo appeared within the current procedure. */
669 static int callinfo_found
;
671 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
672 static int within_entry_exit
;
674 /* Nonzero if the assembler is currently within a procedure definition. */
675 static int within_procedure
;
677 /* Handle on strucutre which keep track of the last symbol
678 seen in each subspace. */
679 static label_symbol_struct
*label_symbols_rootp
= NULL
;
681 /* Holds the last field selector. */
682 static int hppa_field_selector
;
684 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
685 static symbolS
*dummy_symbol
;
687 /* Nonzero if errors are to be printed. */
688 static int print_errors
= 1;
690 /* List of registers that are pre-defined:
692 Each general register has one predefined name of the form
693 %r<REGNUM> which has the value <REGNUM>.
695 Space and control registers are handled in a similar manner,
696 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
698 Likewise for the floating point registers, but of the form
699 %fr<REGNUM>. Floating point registers have additional predefined
700 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
701 again have the value <REGNUM>.
703 Many registers also have synonyms:
705 %r26 - %r23 have %arg0 - %arg3 as synonyms
706 %r28 - %r29 have %ret0 - %ret1 as synonyms
707 %r30 has %sp as a synonym
708 %r27 has %dp as a synonym
709 %r2 has %rp as a synonym
711 Almost every control register has a synonym; they are not listed
714 The table is sorted. Suitable for searching by a binary search. */
716 static const struct pd_reg pre_defined_registers
[] =
916 /* This table is sorted by order of the length of the string. This is
917 so we check for <> before we check for <. If we had a <> and checked
918 for < first, we would get a false match. */
919 static const struct fp_cond_map fp_cond_map
[] =
955 static const struct selector_entry selector_table
[] =
977 /* default space and subspace dictionaries */
979 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
980 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
982 /* pre-defined subsegments (subspaces) for the HPPA. */
983 #define SUBSEG_CODE 0
984 #define SUBSEG_DATA 0
987 #define SUBSEG_UNWIND 3
988 #define SUBSEG_GDB_STRINGS 0
989 #define SUBSEG_GDB_SYMBOLS 1
991 static struct default_subspace_dict pa_def_subspaces
[] =
993 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
994 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
995 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
996 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
998 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND
},
1000 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1003 static struct default_space_dict pa_def_spaces
[] =
1005 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1006 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1007 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1010 /* Misc local definitions used by the assembler. */
1012 /* Return nonzero if the string pointed to by S potentially represents
1013 a right or left half of a FP register */
1014 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1015 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1017 /* These macros are used to maintain spaces/subspaces. */
1018 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1019 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1020 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1021 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1023 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1024 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1026 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1027 main loop after insertion. */
1029 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1031 ((OPCODE) |= (FIELD) << (START)); \
1035 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1036 IGNORE is used to suppress the error message. */
1038 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1040 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1043 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1049 #define is_DP_relative(exp) \
1050 ((exp).X_op == O_subtract \
1051 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1053 #define is_PC_relative(exp) \
1054 ((exp).X_op == O_subtract \
1055 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1057 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1058 always be able to reduce the expression to a constant, so we don't
1059 need real complex handling yet. */
1060 #define is_complex(exp) \
1061 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1063 /* Actual functions to implement the PA specific code for the assembler. */
1065 /* Called before writing the object file. Make sure entry/exit and
1066 proc/procend pairs match. */
1071 if (within_entry_exit
)
1072 as_fatal ("Missing .exit\n");
1074 if (within_procedure
)
1075 as_fatal ("Missing .procend\n");
1078 /* Check to make sure we have a valid space and subspace. */
1081 pa_check_current_space_and_subspace ()
1083 if (current_space
== NULL
)
1084 as_fatal ("Not in a space.\n");
1086 if (current_subspace
== NULL
)
1087 as_fatal ("Not in a subspace.\n");
1090 /* Returns a pointer to the label_symbol_struct for the current space.
1091 or NULL if no label_symbol_struct exists for the current space. */
1093 static label_symbol_struct
*
1096 label_symbol_struct
*label_chain
;
1097 sd_chain_struct
*space_chain
= current_space
;
1099 for (label_chain
= label_symbols_rootp
;
1101 label_chain
= label_chain
->lss_next
)
1102 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1108 /* Defines a label for the current space. If one is already defined,
1109 this function will replace it with the new label. */
1112 pa_define_label (symbol
)
1115 label_symbol_struct
*label_chain
= pa_get_label ();
1116 sd_chain_struct
*space_chain
= current_space
;
1119 label_chain
->lss_label
= symbol
;
1122 /* Create a new label entry and add it to the head of the chain. */
1124 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1125 label_chain
->lss_label
= symbol
;
1126 label_chain
->lss_space
= space_chain
;
1127 label_chain
->lss_next
= NULL
;
1129 if (label_symbols_rootp
)
1130 label_chain
->lss_next
= label_symbols_rootp
;
1132 label_symbols_rootp
= label_chain
;
1136 /* Removes a label definition for the current space.
1137 If there is no label_symbol_struct entry, then no action is taken. */
1140 pa_undefine_label ()
1142 label_symbol_struct
*label_chain
;
1143 label_symbol_struct
*prev_label_chain
= NULL
;
1144 sd_chain_struct
*space_chain
= current_space
;
1146 for (label_chain
= label_symbols_rootp
;
1148 label_chain
= label_chain
->lss_next
)
1150 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1152 /* Remove the label from the chain and free its memory. */
1153 if (prev_label_chain
)
1154 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1156 label_symbols_rootp
= label_chain
->lss_next
;
1161 prev_label_chain
= label_chain
;
1166 /* An HPPA-specific version of fix_new. This is required because the HPPA
1167 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1168 results in the creation of an instance of an hppa_fix_struct. An
1169 hppa_fix_struct stores the extra information along with a pointer to the
1170 original fixS. This is attached to the original fixup via the
1171 tc_fix_data field. */
1174 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1175 r_type
, r_field
, r_format
, arg_reloc
, unwind_bits
)
1179 symbolS
*add_symbol
;
1183 bfd_reloc_code_real_type r_type
;
1184 enum hppa_reloc_field_selector_type r_field
;
1191 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1192 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1195 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1197 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1198 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1199 hppa_fix
->fx_r_type
= r_type
;
1200 hppa_fix
->fx_r_field
= r_field
;
1201 hppa_fix
->fx_r_format
= r_format
;
1202 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1203 hppa_fix
->segment
= now_seg
;
1205 if (r_type
== R_ENTRY
|| r_type
== R_EXIT
)
1206 new_fix
->fx_offset
= *unwind_bits
;
1209 /* foo-$global$ is used to access non-automatic storage. $global$
1210 is really just a marker and has served its purpose, so eliminate
1211 it now so as not to confuse write.c. */
1212 if (new_fix
->fx_subsy
1213 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1214 new_fix
->fx_subsy
= NULL
;
1217 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1218 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1221 parse_cons_expression_hppa (exp
)
1224 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1228 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1229 hppa_field_selector is set by the parse_cons_expression_hppa. */
1232 cons_fix_new_hppa (frag
, where
, size
, exp
)
1238 unsigned int rel_type
;
1240 /* Get a base relocation type. */
1241 if (is_DP_relative (*exp
))
1242 rel_type
= R_HPPA_GOTOFF
;
1243 else if (is_complex (*exp
))
1244 rel_type
= R_HPPA_COMPLEX
;
1248 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1249 as_warn ("Invalid field selector. Assuming F%%.");
1251 fix_new_hppa (frag
, where
, size
,
1252 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1253 hppa_field_selector
, 32, 0, NULL
);
1255 /* Reset field selector to its default state. */
1256 hppa_field_selector
= 0;
1259 /* This function is called once, at assembler startup time. It should
1260 set up all the tables, etc. that the MD part of the assembler will need. */
1265 const char *retval
= NULL
;
1269 last_call_info
= NULL
;
1270 call_info_root
= NULL
;
1272 /* Set the default machine type. */
1273 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, 10))
1274 as_warn ("could not set architecture and machine");
1276 /* Folding of text and data segments fails miserably on the PA.
1277 Warn user and disable "-R" option. */
1278 if (flag_readonly_data_in_text
)
1280 as_warn ("-R option not supported on this target.");
1281 flag_readonly_data_in_text
= 0;
1286 op_hash
= hash_new ();
1288 while (i
< NUMOPCODES
)
1290 const char *name
= pa_opcodes
[i
].name
;
1291 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1292 if (retval
!= NULL
&& *retval
!= '\0')
1294 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1299 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1300 != pa_opcodes
[i
].match
)
1302 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1303 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1308 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1312 as_fatal ("Broken assembler. No assembly attempted.");
1314 /* SOM will change text_section. To make sure we never put
1315 anything into the old one switch to the new one now. */
1316 subseg_set (text_section
, 0);
1318 dummy_symbol
= symbol_find_or_make ("L$dummy");
1319 S_SET_SEGMENT (dummy_symbol
, text_section
);
1322 /* Assemble a single instruction storing it into a frag. */
1329 /* The had better be something to assemble. */
1332 /* If we are within a procedure definition, make sure we've
1333 defined a label for the procedure; handle case where the
1334 label was defined after the .PROC directive.
1336 Note there's not need to diddle with the segment or fragment
1337 for the label symbol in this case. We have already switched
1338 into the new $CODE$ subspace at this point. */
1339 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1341 label_symbol_struct
*label_symbol
= pa_get_label ();
1345 if (label_symbol
->lss_label
)
1347 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1348 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1350 /* Also handle allocation of a fixup to hold the unwind
1351 information when the label appears after the proc/procend. */
1352 if (within_entry_exit
)
1354 char *where
= frag_more (0);
1356 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1357 NULL
, (offsetT
) 0, NULL
,
1358 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1359 (int *)&last_call_info
->ci_unwind
.descriptor
);
1364 as_bad ("Missing function name for .PROC (corrupted label chain)");
1367 as_bad ("Missing function name for .PROC");
1370 /* Assemble the instruction. Results are saved into "the_insn". */
1373 /* Get somewhere to put the assembled instrution. */
1376 /* Output the opcode. */
1377 md_number_to_chars (to
, the_insn
.opcode
, 4);
1379 /* If necessary output more stuff. */
1380 if (the_insn
.reloc
!= R_HPPA_NONE
)
1381 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1382 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1383 the_insn
.reloc
, the_insn
.field_selector
,
1384 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1387 /* Do the real work for assembling a single instruction. Store results
1388 into the global "the_insn" variable. */
1394 char *error_message
= "";
1395 char *s
, c
, *argstart
, *name
, *save_s
;
1399 int cmpltr
, nullif
, flag
, cond
, num
;
1400 unsigned long opcode
;
1401 struct pa_opcode
*insn
;
1403 /* We must have a valid space and subspace. */
1404 pa_check_current_space_and_subspace ();
1406 /* Skip to something interesting. */
1407 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1426 as_fatal ("Unknown opcode: `%s'", str
);
1431 /* Convert everything into lower case. */
1434 if (isupper (*save_s
))
1435 *save_s
= tolower (*save_s
);
1439 /* Look up the opcode in the has table. */
1440 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1442 as_bad ("Unknown opcode: `%s'", str
);
1451 /* Mark the location where arguments for the instruction start, then
1452 start processing them. */
1456 /* Do some initialization. */
1457 opcode
= insn
->match
;
1458 bzero (&the_insn
, sizeof (the_insn
));
1460 the_insn
.reloc
= R_HPPA_NONE
;
1462 /* If this instruction is specific to a particular architecture,
1463 then set a new architecture. */
1464 if (bfd_get_mach (stdoutput
) < insn
->arch
)
1466 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, insn
->arch
))
1467 as_warn ("could not update architecture and machine");
1470 /* Build the opcode, checking as we go to make
1471 sure that the operands match. */
1472 for (args
= insn
->args
;; ++args
)
1477 /* End of arguments. */
1493 /* These must match exactly. */
1502 /* Handle a 5 bit register or control register field at 10. */
1505 num
= pa_parse_number (&s
, 0);
1506 CHECK_FIELD (num
, 31, 0, 0);
1507 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1509 /* Handle a 5 bit register field at 15. */
1511 num
= pa_parse_number (&s
, 0);
1512 CHECK_FIELD (num
, 31, 0, 0);
1513 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1515 /* Handle a 5 bit register field at 31. */
1518 num
= pa_parse_number (&s
, 0);
1519 CHECK_FIELD (num
, 31, 0, 0);
1520 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1522 /* Handle a 5 bit field length at 31. */
1524 num
= pa_get_absolute_expression (&the_insn
, &s
);
1526 CHECK_FIELD (num
, 32, 1, 0);
1527 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1529 /* Handle a 5 bit immediate at 15. */
1531 num
= pa_get_absolute_expression (&the_insn
, &s
);
1533 CHECK_FIELD (num
, 15, -16, 0);
1534 low_sign_unext (num
, 5, &num
);
1535 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1537 /* Handle a 5 bit immediate at 31. */
1539 num
= pa_get_absolute_expression (&the_insn
, &s
);
1541 CHECK_FIELD (num
, 15, -16, 0)
1542 low_sign_unext (num
, 5, &num
);
1543 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1545 /* Handle an unsigned 5 bit immediate at 31. */
1547 num
= pa_get_absolute_expression (&the_insn
, &s
);
1549 CHECK_FIELD (num
, 31, 0, 0);
1550 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1552 /* Handle an unsigned 5 bit immediate at 15. */
1554 num
= pa_get_absolute_expression (&the_insn
, &s
);
1556 CHECK_FIELD (num
, 31, 0, 0);
1557 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1559 /* Handle a 2 bit space identifier at 17. */
1561 num
= pa_parse_number (&s
, 0);
1562 CHECK_FIELD (num
, 3, 0, 1);
1563 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1565 /* Handle a 3 bit space identifier at 18. */
1567 num
= pa_parse_number (&s
, 0);
1568 CHECK_FIELD (num
, 7, 0, 1);
1569 dis_assemble_3 (num
, &num
);
1570 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1572 /* Handle a completer for an indexing load or store. */
1578 while (*s
== ',' && i
< 2)
1581 if (strncasecmp (s
, "sm", 2) == 0)
1588 else if (strncasecmp (s
, "m", 1) == 0)
1590 else if (strncasecmp (s
, "s", 1) == 0)
1593 as_bad ("Invalid Indexed Load Completer.");
1598 as_bad ("Invalid Indexed Load Completer Syntax.");
1600 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1603 /* Handle a short load/store completer. */
1611 if (strncasecmp (s
, "ma", 2) == 0)
1616 else if (strncasecmp (s
, "mb", 2) == 0)
1622 as_bad ("Invalid Short Load/Store Completer.");
1626 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1629 /* Handle a stbys completer. */
1635 while (*s
== ',' && i
< 2)
1638 if (strncasecmp (s
, "m", 1) == 0)
1640 else if (strncasecmp (s
, "b", 1) == 0)
1642 else if (strncasecmp (s
, "e", 1) == 0)
1645 as_bad ("Invalid Store Bytes Short Completer");
1650 as_bad ("Invalid Store Bytes Short Completer");
1652 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1655 /* Handle a non-negated compare/stubtract condition. */
1657 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1660 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1663 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1665 /* Handle a negated or non-negated compare/subtract condition. */
1668 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1672 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1675 as_bad ("Invalid Compare/Subtract Condition.");
1680 /* Negated condition requires an opcode change. */
1684 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1686 /* Handle non-negated add condition. */
1688 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1691 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1694 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1696 /* Handle a negated or non-negated add condition. */
1699 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1703 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1706 as_bad ("Invalid Compare/Subtract Condition");
1711 /* Negated condition requires an opcode change. */
1715 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1717 /* Handle a compare/subtract condition. */
1724 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1729 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1732 as_bad ("Invalid Compare/Subtract Condition");
1736 opcode
|= cmpltr
<< 13;
1737 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1739 /* Handle a non-negated add condition. */
1748 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1752 if (strcmp (name
, "=") == 0)
1754 else if (strcmp (name
, "<") == 0)
1756 else if (strcmp (name
, "<=") == 0)
1758 else if (strcasecmp (name
, "nuv") == 0)
1760 else if (strcasecmp (name
, "znv") == 0)
1762 else if (strcasecmp (name
, "sv") == 0)
1764 else if (strcasecmp (name
, "od") == 0)
1766 else if (strcasecmp (name
, "n") == 0)
1768 else if (strcasecmp (name
, "tr") == 0)
1773 else if (strcmp (name
, "<>") == 0)
1778 else if (strcmp (name
, ">=") == 0)
1783 else if (strcmp (name
, ">") == 0)
1788 else if (strcasecmp (name
, "uv") == 0)
1793 else if (strcasecmp (name
, "vnz") == 0)
1798 else if (strcasecmp (name
, "nsv") == 0)
1803 else if (strcasecmp (name
, "ev") == 0)
1809 as_bad ("Invalid Add Condition: %s", name
);
1812 nullif
= pa_parse_nullif (&s
);
1813 opcode
|= nullif
<< 1;
1814 opcode
|= cmpltr
<< 13;
1815 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1817 /* HANDLE a logical instruction condition. */
1825 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1829 if (strcmp (name
, "=") == 0)
1831 else if (strcmp (name
, "<") == 0)
1833 else if (strcmp (name
, "<=") == 0)
1835 else if (strcasecmp (name
, "od") == 0)
1837 else if (strcasecmp (name
, "tr") == 0)
1842 else if (strcmp (name
, "<>") == 0)
1847 else if (strcmp (name
, ">=") == 0)
1852 else if (strcmp (name
, ">") == 0)
1857 else if (strcasecmp (name
, "ev") == 0)
1863 as_bad ("Invalid Logical Instruction Condition.");
1866 opcode
|= cmpltr
<< 13;
1867 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1869 /* Handle a unit instruction condition. */
1876 if (strncasecmp (s
, "sbz", 3) == 0)
1881 else if (strncasecmp (s
, "shz", 3) == 0)
1886 else if (strncasecmp (s
, "sdc", 3) == 0)
1891 else if (strncasecmp (s
, "sbc", 3) == 0)
1896 else if (strncasecmp (s
, "shc", 3) == 0)
1901 else if (strncasecmp (s
, "tr", 2) == 0)
1907 else if (strncasecmp (s
, "nbz", 3) == 0)
1913 else if (strncasecmp (s
, "nhz", 3) == 0)
1919 else if (strncasecmp (s
, "ndc", 3) == 0)
1925 else if (strncasecmp (s
, "nbc", 3) == 0)
1931 else if (strncasecmp (s
, "nhc", 3) == 0)
1938 as_bad ("Invalid Logical Instruction Condition.");
1940 opcode
|= cmpltr
<< 13;
1941 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1943 /* Handle a shift/extract/deposit condition. */
1951 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1955 if (strcmp (name
, "=") == 0)
1957 else if (strcmp (name
, "<") == 0)
1959 else if (strcasecmp (name
, "od") == 0)
1961 else if (strcasecmp (name
, "tr") == 0)
1963 else if (strcmp (name
, "<>") == 0)
1965 else if (strcmp (name
, ">=") == 0)
1967 else if (strcasecmp (name
, "ev") == 0)
1969 /* Handle movb,n. Put things back the way they were.
1970 This includes moving s back to where it started. */
1971 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1978 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1981 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1983 /* Handle bvb and bb conditions. */
1989 if (strncmp (s
, "<", 1) == 0)
1994 else if (strncmp (s
, ">=", 2) == 0)
2000 as_bad ("Invalid Bit Branch Condition: %c", *s
);
2002 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
2004 /* Handle a system control completer. */
2006 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2014 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2016 /* Handle a nullification completer for branch instructions. */
2018 nullif
= pa_parse_nullif (&s
);
2019 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2021 /* Handle a nullification completer for copr and spop insns. */
2023 nullif
= pa_parse_nullif (&s
);
2024 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2026 /* Handle a 11 bit immediate at 31. */
2028 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2031 if (the_insn
.exp
.X_op
== O_constant
)
2033 num
= evaluate_absolute (&the_insn
);
2034 CHECK_FIELD (num
, 1023, -1024, 0);
2035 low_sign_unext (num
, 11, &num
);
2036 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2040 if (is_DP_relative (the_insn
.exp
))
2041 the_insn
.reloc
= R_HPPA_GOTOFF
;
2042 else if (is_PC_relative (the_insn
.exp
))
2043 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2045 the_insn
.reloc
= R_HPPA
;
2046 the_insn
.format
= 11;
2050 /* Handle a 14 bit immediate at 31. */
2052 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2055 if (the_insn
.exp
.X_op
== O_constant
)
2057 num
= evaluate_absolute (&the_insn
);
2058 CHECK_FIELD (num
, 8191, -8192, 0);
2059 low_sign_unext (num
, 14, &num
);
2060 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2064 if (is_DP_relative (the_insn
.exp
))
2065 the_insn
.reloc
= R_HPPA_GOTOFF
;
2066 else if (is_PC_relative (the_insn
.exp
))
2067 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2069 the_insn
.reloc
= R_HPPA
;
2070 the_insn
.format
= 14;
2074 /* Handle a 21 bit immediate at 31. */
2076 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2079 if (the_insn
.exp
.X_op
== O_constant
)
2081 num
= evaluate_absolute (&the_insn
);
2082 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2083 dis_assemble_21 (num
, &num
);
2084 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2088 if (is_DP_relative (the_insn
.exp
))
2089 the_insn
.reloc
= R_HPPA_GOTOFF
;
2090 else if (is_PC_relative (the_insn
.exp
))
2091 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2093 the_insn
.reloc
= R_HPPA
;
2094 the_insn
.format
= 21;
2098 /* Handle a 12 bit branch displacement. */
2100 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2104 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2106 unsigned int w1
, w
, result
;
2108 num
= evaluate_absolute (&the_insn
);
2111 as_bad ("Branch to unaligned address");
2114 CHECK_FIELD (num
, 8199, -8184, 0);
2115 sign_unext ((num
- 8) >> 2, 12, &result
);
2116 dis_assemble_12 (result
, &w1
, &w
);
2117 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2121 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2122 the_insn
.format
= 12;
2123 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2124 bzero (&last_call_desc
, sizeof (struct call_desc
));
2129 /* Handle a 17 bit branch displacement. */
2131 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2135 if (!the_insn
.exp
.X_add_symbol
2136 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2139 unsigned int w2
, w1
, w
, result
;
2141 num
= evaluate_absolute (&the_insn
);
2144 as_bad ("Branch to unaligned address");
2147 CHECK_FIELD (num
, 262143, -262144, 0);
2149 if (the_insn
.exp
.X_add_symbol
)
2152 sign_unext (num
>> 2, 17, &result
);
2153 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2154 INSERT_FIELD_AND_CONTINUE (opcode
,
2155 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2159 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2160 the_insn
.format
= 17;
2161 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2162 bzero (&last_call_desc
, sizeof (struct call_desc
));
2166 /* Handle an absolute 17 bit branch target. */
2168 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2172 if (!the_insn
.exp
.X_add_symbol
2173 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2176 unsigned int w2
, w1
, w
, result
;
2178 num
= evaluate_absolute (&the_insn
);
2181 as_bad ("Branch to unaligned address");
2184 CHECK_FIELD (num
, 262143, -262144, 0);
2186 if (the_insn
.exp
.X_add_symbol
)
2189 sign_unext (num
>> 2, 17, &result
);
2190 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2191 INSERT_FIELD_AND_CONTINUE (opcode
,
2192 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2196 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2197 the_insn
.format
= 17;
2198 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2199 bzero (&last_call_desc
, sizeof (struct call_desc
));
2203 /* Handle a 5 bit shift count at 26. */
2205 num
= pa_get_absolute_expression (&the_insn
, &s
);
2207 CHECK_FIELD (num
, 31, 0, 0);
2208 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2210 /* Handle a 5 bit bit position at 26. */
2212 num
= pa_get_absolute_expression (&the_insn
, &s
);
2214 CHECK_FIELD (num
, 31, 0, 0);
2215 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2217 /* Handle a 5 bit immediate at 10. */
2219 num
= pa_get_absolute_expression (&the_insn
, &s
);
2221 CHECK_FIELD (num
, 31, 0, 0);
2222 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2224 /* Handle a 13 bit immediate at 18. */
2226 num
= pa_get_absolute_expression (&the_insn
, &s
);
2228 CHECK_FIELD (num
, 8191, 0, 0);
2229 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2231 /* Handle a 26 bit immediate at 31. */
2233 num
= pa_get_absolute_expression (&the_insn
, &s
);
2235 CHECK_FIELD (num
, 671108864, 0, 0);
2236 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2238 /* Handle a 3 bit SFU identifier at 25. */
2241 as_bad ("Invalid SFU identifier");
2242 num
= pa_get_absolute_expression (&the_insn
, &s
);
2244 CHECK_FIELD (num
, 7, 0, 0);
2245 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2247 /* Handle a 20 bit SOP field for spop0. */
2249 num
= pa_get_absolute_expression (&the_insn
, &s
);
2251 CHECK_FIELD (num
, 1048575, 0, 0);
2252 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2253 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2255 /* Handle a 15bit SOP field for spop1. */
2257 num
= pa_get_absolute_expression (&the_insn
, &s
);
2259 CHECK_FIELD (num
, 32767, 0, 0);
2260 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2262 /* Handle a 10bit SOP field for spop3. */
2264 num
= pa_get_absolute_expression (&the_insn
, &s
);
2266 CHECK_FIELD (num
, 1023, 0, 0);
2267 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2268 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2270 /* Handle a 15 bit SOP field for spop2. */
2272 num
= pa_get_absolute_expression (&the_insn
, &s
);
2274 CHECK_FIELD (num
, 32767, 0, 0);
2275 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2276 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2278 /* Handle a 3-bit co-processor ID field. */
2281 as_bad ("Invalid COPR identifier");
2282 num
= pa_get_absolute_expression (&the_insn
, &s
);
2284 CHECK_FIELD (num
, 7, 0, 0);
2285 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2287 /* Handle a 22bit SOP field for copr. */
2289 num
= pa_get_absolute_expression (&the_insn
, &s
);
2291 CHECK_FIELD (num
, 4194303, 0, 0);
2292 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2293 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2295 /* Handle a source FP operand format completer. */
2297 flag
= pa_parse_fp_format (&s
);
2298 the_insn
.fpof1
= flag
;
2299 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2301 /* Handle a destination FP operand format completer. */
2303 /* pa_parse_format needs the ',' prefix. */
2305 flag
= pa_parse_fp_format (&s
);
2306 the_insn
.fpof2
= flag
;
2307 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2309 /* Handle FP compare conditions. */
2311 cond
= pa_parse_fp_cmp_cond (&s
);
2312 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2314 /* Handle L/R register halves like 't'. */
2317 struct pa_11_fp_reg_struct result
;
2319 pa_parse_number (&s
, &result
);
2320 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2321 opcode
|= result
.number_part
;
2323 /* 0x30 opcodes are FP arithmetic operation opcodes
2324 and need to be turned into 0x38 opcodes. This
2325 is not necessary for loads/stores. */
2326 if (need_pa11_opcode (&the_insn
, &result
)
2327 && ((opcode
& 0xfc000000) == 0x30000000))
2330 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2333 /* Handle L/R register halves like 'b'. */
2336 struct pa_11_fp_reg_struct result
;
2338 pa_parse_number (&s
, &result
);
2339 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2340 opcode
|= result
.number_part
<< 21;
2341 if (need_pa11_opcode (&the_insn
, &result
))
2343 opcode
|= (result
.l_r_select
& 1) << 7;
2349 /* Handle L/R register halves like 'x'. */
2352 struct pa_11_fp_reg_struct result
;
2354 pa_parse_number (&s
, &result
);
2355 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2356 opcode
|= (result
.number_part
& 0x1f) << 16;
2357 if (need_pa11_opcode (&the_insn
, &result
))
2359 opcode
|= (result
.l_r_select
& 1) << 12;
2365 /* Handle a 5 bit register field at 10. */
2368 struct pa_11_fp_reg_struct result
;
2370 pa_parse_number (&s
, &result
);
2371 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2372 if (the_insn
.fpof1
== SGL
)
2374 if (result
.number_part
< 16)
2376 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2380 result
.number_part
&= 0xF;
2381 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2383 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2386 /* Handle a 5 bit register field at 15. */
2389 struct pa_11_fp_reg_struct result
;
2391 pa_parse_number (&s
, &result
);
2392 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2393 if (the_insn
.fpof1
== SGL
)
2395 if (result
.number_part
< 16)
2397 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2400 result
.number_part
&= 0xF;
2401 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2403 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2406 /* Handle a 5 bit register field at 31. */
2409 struct pa_11_fp_reg_struct result
;
2411 pa_parse_number (&s
, &result
);
2412 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2413 if (the_insn
.fpof1
== SGL
)
2415 if (result
.number_part
< 16)
2417 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
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_11_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 if (result
.number_part
< 16)
2437 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2440 result
.number_part
&= 0xF;
2441 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2443 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2446 /* Handle a 5 bit register field at 25. */
2449 struct pa_11_fp_reg_struct result
;
2451 pa_parse_number (&s
, &result
);
2452 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2453 if (the_insn
.fpof1
== SGL
)
2455 if (result
.number_part
< 16)
2457 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2460 result
.number_part
&= 0xF;
2461 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2463 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2466 /* Handle a floating point operand format at 26.
2467 Only allows single and double precision. */
2469 flag
= pa_parse_fp_format (&s
);
2475 the_insn
.fpof1
= flag
;
2481 as_bad ("Invalid Floating Point Operand Format.");
2491 /* Check if the args matched. */
2494 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2495 && !strcmp (insn
->name
, insn
[1].name
))
2503 as_bad ("Invalid operands %s", error_message
);
2510 the_insn
.opcode
= opcode
;
2513 /* Turn a string in input_line_pointer into a floating point constant of type
2514 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2515 emitted is stored in *sizeP . An error message or NULL is returned. */
2517 #define MAX_LITTLENUMS 6
2520 md_atof (type
, litP
, sizeP
)
2526 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2527 LITTLENUM_TYPE
*wordP
;
2559 return "Bad call to MD_ATOF()";
2561 t
= atof_ieee (input_line_pointer
, type
, words
);
2563 input_line_pointer
= t
;
2564 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2565 for (wordP
= words
; prec
--;)
2567 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2568 litP
+= sizeof (LITTLENUM_TYPE
);
2573 /* Write out big-endian. */
2576 md_number_to_chars (buf
, val
, n
)
2581 number_to_chars_bigendian (buf
, val
, n
);
2584 /* Translate internal representation of relocation info to BFD target
2588 tc_gen_reloc (section
, fixp
)
2593 struct hppa_fix_struct
*hppa_fixp
;
2594 bfd_reloc_code_real_type code
;
2595 static arelent
*no_relocs
= NULL
;
2597 bfd_reloc_code_real_type
**codes
;
2601 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2602 if (fixp
->fx_addsy
== 0)
2604 assert (hppa_fixp
!= 0);
2605 assert (section
!= 0);
2607 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2608 assert (reloc
!= 0);
2610 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2611 codes
= (bfd_reloc_code_real_type
**) hppa_gen_reloc_type (stdoutput
,
2613 hppa_fixp
->fx_r_format
,
2614 hppa_fixp
->fx_r_field
,
2615 fixp
->fx_subsy
!= NULL
);
2617 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2620 relocs
= (arelent
**)
2621 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2622 assert (relocs
!= 0);
2624 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2625 sizeof (arelent
) * n_relocs
);
2627 assert (reloc
!= 0);
2629 for (i
= 0; i
< n_relocs
; i
++)
2630 relocs
[i
] = &reloc
[i
];
2632 relocs
[n_relocs
] = NULL
;
2635 switch (fixp
->fx_r_type
)
2638 assert (n_relocs
== 1);
2642 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2643 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2644 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2645 reloc
->addend
= 0; /* default */
2647 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2649 /* Now, do any processing that is dependent on the relocation type. */
2652 case R_PARISC_DLTREL21L
:
2653 case R_PARISC_DLTREL14R
:
2654 case R_PARISC_DLTREL14F
:
2655 case R_PARISC_PLABEL32
:
2656 case R_PARISC_PLABEL21L
:
2657 case R_PARISC_PLABEL14R
:
2658 /* For plabel relocations, the addend of the
2659 relocation should be either 0 (no static link) or 2
2660 (static link required).
2662 FIXME: We always assume no static link!
2664 We also slam a zero addend into the DLT relative relocs;
2665 it doesn't make a lot of sense to use any addend since
2666 it gets you a different (eg unknown) DLT entry. */
2670 case R_PARISC_PCREL21L
:
2671 case R_PARISC_PCREL17R
:
2672 case R_PARISC_PCREL17F
:
2673 case R_PARISC_PCREL17C
:
2674 case R_PARISC_PCREL14R
:
2675 case R_PARISC_PCREL14F
:
2676 /* The constant is stored in the instruction. */
2677 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2680 reloc
->addend
= fixp
->fx_offset
;
2687 /* Walk over reach relocation returned by the BFD backend. */
2688 for (i
= 0; i
< n_relocs
; i
++)
2692 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2693 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2694 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2699 /* The only time we ever use a R_COMP2 fixup is for the difference
2700 of two symbols. With that in mind we fill in all four
2701 relocs now and break out of the loop. */
2703 relocs
[0]->sym_ptr_ptr
= &bfd_abs_symbol
;
2704 relocs
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[0]);
2705 relocs
[0]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2706 relocs
[0]->addend
= 0;
2707 relocs
[1]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2708 relocs
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[1]);
2709 relocs
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2710 relocs
[1]->addend
= 0;
2711 relocs
[2]->sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2712 relocs
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[2]);
2713 relocs
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2714 relocs
[2]->addend
= 0;
2715 relocs
[3]->sym_ptr_ptr
= &bfd_abs_symbol
;
2716 relocs
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[3]);
2717 relocs
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2718 relocs
[3]->addend
= 0;
2719 relocs
[4]->sym_ptr_ptr
= &bfd_abs_symbol
;
2720 relocs
[4]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[4]);
2721 relocs
[4]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2722 relocs
[4]->addend
= 0;
2726 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2732 /* For plabel relocations, the addend of the
2733 relocation should be either 0 (no static link) or 2
2734 (static link required).
2736 FIXME: We always assume no static link!
2738 We also slam a zero addend into the DLT relative relocs;
2739 it doesn't make a lot of sense to use any addend since
2740 it gets you a different (eg unknown) DLT entry. */
2741 relocs
[i
]->addend
= 0;
2755 /* There is no symbol or addend associated with these fixups. */
2756 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2757 relocs
[i
]->addend
= 0;
2762 /* There is no symbol associated with these fixups. */
2763 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2764 relocs
[i
]->addend
= fixp
->fx_offset
;
2768 relocs
[i
]->addend
= fixp
->fx_offset
;
2777 /* Process any machine dependent frag types. */
2780 md_convert_frag (abfd
, sec
, fragP
)
2782 register asection
*sec
;
2783 register fragS
*fragP
;
2785 unsigned int address
;
2787 if (fragP
->fr_type
== rs_machine_dependent
)
2789 switch ((int) fragP
->fr_subtype
)
2792 fragP
->fr_type
= rs_fill
;
2793 know (fragP
->fr_var
== 1);
2794 know (fragP
->fr_next
);
2795 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2796 if (address
% fragP
->fr_offset
)
2799 fragP
->fr_next
->fr_address
2804 fragP
->fr_offset
= 0;
2810 /* Round up a section size to the appropriate boundary. */
2813 md_section_align (segment
, size
)
2817 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2818 int align2
= (1 << align
) - 1;
2820 return (size
+ align2
) & ~align2
;
2823 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2825 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2827 addressT from_addr
, to_addr
;
2831 fprintf (stderr
, "pa_create_short_jmp\n");
2835 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2837 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2839 addressT from_addr
, to_addr
;
2843 fprintf (stderr
, "pa_create_long_jump\n");
2847 /* Return the approximate size of a frag before relaxation has occurred. */
2849 md_estimate_size_before_relax (fragP
, segment
)
2850 register fragS
*fragP
;
2857 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2863 CONST
char *md_shortopts
= "";
2864 struct option md_longopts
[] = {
2865 {NULL
, no_argument
, NULL
, 0}
2867 size_t md_longopts_size
= sizeof(md_longopts
);
2870 md_parse_option (c
, arg
)
2878 md_show_usage (stream
)
2883 /* We have no need to default values of symbols. */
2886 md_undefined_symbol (name
)
2892 /* Apply a fixup to an instruction. */
2895 md_apply_fix (fixP
, valp
)
2899 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2900 struct hppa_fix_struct
*hppa_fixP
;
2901 long new_val
, result
;
2902 unsigned int w1
, w2
, w
;
2904 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2905 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2906 never be "applied" (they are just markers). Likewise for
2907 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
2909 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2910 || fixP
->fx_r_type
== R_HPPA_EXIT
2911 || fixP
->fx_r_type
== R_HPPA_BEGIN_BRTAB
2912 || fixP
->fx_r_type
== R_HPPA_END_BRTAB
)
2916 /* There should have been an HPPA specific fixup associated
2917 with the GAS fixup. */
2920 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2921 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2923 /* If there is a symbol associated with this fixup, then it's something
2924 which will need a SOM relocation (except for some PC-relative relocs).
2925 In such cases we should treat the "val" or "addend" as zero since it
2926 will be added in as needed from fx_offset in tc_gen_reloc. */
2927 if ((fixP
->fx_addsy
!= NULL
2928 || fixP
->fx_r_type
== R_HPPA_NONE
)
2931 || hppa_fixP
->fx_r_field
== e_psel
2932 || hppa_fixP
->fx_r_field
== e_rpsel
2933 || hppa_fixP
->fx_r_field
== e_lpsel
2934 || hppa_fixP
->fx_r_field
== e_tsel
2935 || hppa_fixP
->fx_r_field
== e_rtsel
2936 || hppa_fixP
->fx_r_field
== e_ltsel
2939 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2941 /* This is truely disgusting. The machine independent code blindly
2942 adds in the value of the symbol being relocated against. Damn! */
2944 && fixP
->fx_addsy
!= NULL
2945 && S_GET_SEGMENT (fixP
->fx_addsy
) != bfd_com_section_ptr
)
2946 new_val
= hppa_field_adjust (*valp
- S_GET_VALUE (fixP
->fx_addsy
),
2947 0, hppa_fixP
->fx_r_field
);
2950 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2952 /* Handle pc-relative exceptions from above. */
2953 #define arg_reloc_stub_needed(CALLER, CALLEE) \
2954 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2955 if ((fmt
== 12 || fmt
== 17)
2958 && !arg_reloc_stub_needed (((obj_symbol_type
*)
2959 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2960 hppa_fixP
->fx_arg_reloc
)
2961 && ((int)(*valp
) > -262144 && (int)(*valp
) < 262143)
2962 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2964 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2966 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2967 #undef arg_reloc_stub_needed
2971 /* Handle all opcodes with the 'j' operand type. */
2973 CHECK_FIELD (new_val
, 8191, -8192, 0);
2975 /* Mask off 14 bits to be changed. */
2976 bfd_put_32 (stdoutput
,
2977 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2979 low_sign_unext (new_val
, 14, &result
);
2982 /* Handle all opcodes with the 'k' operand type. */
2984 CHECK_FIELD (new_val
, 2097152, 0, 0);
2986 /* Mask off 21 bits to be changed. */
2987 bfd_put_32 (stdoutput
,
2988 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2990 dis_assemble_21 (new_val
, &result
);
2993 /* Handle all the opcodes with the 'i' operand type. */
2995 CHECK_FIELD (new_val
, 1023, -1023, 0);
2997 /* Mask off 11 bits to be changed. */
2998 bfd_put_32 (stdoutput
,
2999 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
3001 low_sign_unext (new_val
, 11, &result
);
3004 /* Handle all the opcodes with the 'w' operand type. */
3006 CHECK_FIELD (new_val
, 8199, -8184, 0)
3008 /* Mask off 11 bits to be changed. */
3009 sign_unext ((new_val
- 8) >> 2, 12, &result
);
3010 bfd_put_32 (stdoutput
,
3011 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3014 dis_assemble_12 (result
, &w1
, &w
);
3015 result
= ((w1
<< 2) | w
);
3018 /* Handle some of the opcodes with the 'W' operand type. */
3020 CHECK_FIELD (new_val
, 262143, -262144, 0);
3022 /* Mask off 17 bits to be changed. */
3023 bfd_put_32 (stdoutput
,
3024 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3026 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3027 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3028 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3033 bfd_put_32 (stdoutput
, new_val
, buf
);
3037 as_bad ("Unknown relocation encountered in md_apply_fix.");
3041 /* Insert the relocation. */
3042 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3047 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3048 (unsigned int) fixP
, fixP
->fx_r_type
);
3053 /* Exactly what point is a PC-relative offset relative TO?
3054 On the PA, they're relative to the address of the offset. */
3057 md_pcrel_from (fixP
)
3060 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3063 /* Return nonzero if the input line pointer is at the end of
3067 is_end_of_statement ()
3069 return ((*input_line_pointer
== '\n')
3070 || (*input_line_pointer
== ';')
3071 || (*input_line_pointer
== '!'));
3074 /* Read a number from S. The number might come in one of many forms,
3075 the most common will be a hex or decimal constant, but it could be
3076 a pre-defined register (Yuk!), or an absolute symbol.
3078 Return a number or -1 for failure.
3080 When parsing PA-89 FP register numbers RESULT will be
3081 the address of a structure to return information about
3082 L/R half of FP registers, store results there as appropriate.
3084 pa_parse_number can not handle negative constants and will fail
3085 horribly if it is passed such a constant. */
3088 pa_parse_number (s
, result
)
3090 struct pa_11_fp_reg_struct
*result
;
3099 /* Skip whitespace before the number. */
3100 while (*p
== ' ' || *p
== '\t')
3103 /* Store info in RESULT if requested by caller. */
3106 result
->number_part
= -1;
3107 result
->l_r_select
= -1;
3113 /* Looks like a number. */
3116 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3118 /* The number is specified in hex. */
3120 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3121 || ((*p
>= 'A') && (*p
<= 'F')))
3124 num
= num
* 16 + *p
- '0';
3125 else if (*p
>= 'a' && *p
<= 'f')
3126 num
= num
* 16 + *p
- 'a' + 10;
3128 num
= num
* 16 + *p
- 'A' + 10;
3134 /* The number is specified in decimal. */
3135 while (isdigit (*p
))
3137 num
= num
* 10 + *p
- '0';
3142 /* Store info in RESULT if requested by the caller. */
3145 result
->number_part
= num
;
3147 if (IS_R_SELECT (p
))
3149 result
->l_r_select
= 1;
3152 else if (IS_L_SELECT (p
))
3154 result
->l_r_select
= 0;
3158 result
->l_r_select
= 0;
3163 /* The number might be a predefined register. */
3168 /* Tege hack: Special case for general registers as the general
3169 code makes a binary search with case translation, and is VERY
3174 if (*p
== 'e' && *(p
+ 1) == 't'
3175 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3178 num
= *p
- '0' + 28;
3186 else if (!isdigit (*p
))
3189 as_bad ("Undefined register: '%s'.", name
);
3195 num
= num
* 10 + *p
++ - '0';
3196 while (isdigit (*p
));
3201 /* Do a normal register search. */
3202 while (is_part_of_name (c
))
3208 status
= reg_name_search (name
);
3214 as_bad ("Undefined register: '%s'.", name
);
3220 /* Store info in RESULT if requested by caller. */
3223 result
->number_part
= num
;
3224 if (IS_R_SELECT (p
- 1))
3225 result
->l_r_select
= 1;
3226 else if (IS_L_SELECT (p
- 1))
3227 result
->l_r_select
= 0;
3229 result
->l_r_select
= 0;
3234 /* And finally, it could be a symbol in the absolute section which
3235 is effectively a constant. */
3239 while (is_part_of_name (c
))
3245 if ((sym
= symbol_find (name
)) != NULL
)
3247 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3248 num
= S_GET_VALUE (sym
);
3252 as_bad ("Non-absolute symbol: '%s'.", name
);
3258 /* There is where we'd come for an undefined symbol
3259 or for an empty string. For an empty string we
3260 will return zero. That's a concession made for
3261 compatability with the braindamaged HP assemblers. */
3267 as_bad ("Undefined absolute constant: '%s'.", name
);
3273 /* Store info in RESULT if requested by caller. */
3276 result
->number_part
= num
;
3277 if (IS_R_SELECT (p
- 1))
3278 result
->l_r_select
= 1;
3279 else if (IS_L_SELECT (p
- 1))
3280 result
->l_r_select
= 0;
3282 result
->l_r_select
= 0;
3290 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3292 /* Given NAME, find the register number associated with that name, return
3293 the integer value associated with the given name or -1 on failure. */
3296 reg_name_search (name
)
3299 int middle
, low
, high
;
3303 high
= REG_NAME_CNT
- 1;
3307 middle
= (low
+ high
) / 2;
3308 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3314 return pre_defined_registers
[middle
].value
;
3316 while (low
<= high
);
3322 /* Return nonzero if the given INSN and L/R information will require
3323 a new PA-1.1 opcode. */
3326 need_pa11_opcode (insn
, result
)
3328 struct pa_11_fp_reg_struct
*result
;
3330 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3332 /* If this instruction is specific to a particular architecture,
3333 then set a new architecture. */
3334 if (bfd_get_mach (stdoutput
) < pa11
)
3336 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, pa11
))
3337 as_warn ("could not update architecture and machine");
3345 /* Parse a condition for a fcmp instruction. Return the numerical
3346 code associated with the condition. */
3349 pa_parse_fp_cmp_cond (s
)
3356 for (i
= 0; i
< 32; i
++)
3358 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3359 strlen (fp_cond_map
[i
].string
)) == 0)
3361 cond
= fp_cond_map
[i
].cond
;
3362 *s
+= strlen (fp_cond_map
[i
].string
);
3363 /* If not a complete match, back up the input string and
3365 if (**s
!= ' ' && **s
!= '\t')
3367 *s
-= strlen (fp_cond_map
[i
].string
);
3370 while (**s
== ' ' || **s
== '\t')
3376 as_bad ("Invalid FP Compare Condition: %s", *s
);
3378 /* Advance over the bogus completer. */
3379 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3385 /* Parse an FP operand format completer returning the completer
3388 static fp_operand_format
3389 pa_parse_fp_format (s
)
3398 if (strncasecmp (*s
, "sgl", 3) == 0)
3403 else if (strncasecmp (*s
, "dbl", 3) == 0)
3408 else if (strncasecmp (*s
, "quad", 4) == 0)
3415 format
= ILLEGAL_FMT
;
3416 as_bad ("Invalid FP Operand Format: %3s", *s
);
3423 /* Convert from a selector string into a selector type. */
3426 pa_chk_field_selector (str
)
3429 int middle
, low
, high
;
3433 /* Read past any whitespace. */
3434 /* FIXME: should we read past newlines and formfeeds??? */
3435 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3438 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3439 name
[0] = tolower ((*str
)[0]),
3441 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3442 name
[0] = tolower ((*str
)[0]),
3443 name
[1] = tolower ((*str
)[1]),
3446 else if ((*str
)[3] == '\'' || (*str
)[3] == '%')
3447 name
[0] = tolower ((*str
)[0]),
3448 name
[1] = tolower ((*str
)[1]),
3449 name
[2] = tolower ((*str
)[2]),
3456 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3460 middle
= (low
+ high
) / 2;
3461 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3468 *str
+= strlen (name
) + 1;
3470 if (selector_table
[middle
].field_selector
== e_nsel
)
3473 return selector_table
[middle
].field_selector
;
3476 while (low
<= high
);
3481 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3484 get_expression (str
)
3490 save_in
= input_line_pointer
;
3491 input_line_pointer
= str
;
3492 seg
= expression (&the_insn
.exp
);
3493 if (!(seg
== absolute_section
3494 || seg
== undefined_section
3495 || SEG_NORMAL (seg
)))
3497 as_warn ("Bad segment in expression.");
3498 expr_end
= input_line_pointer
;
3499 input_line_pointer
= save_in
;
3502 expr_end
= input_line_pointer
;
3503 input_line_pointer
= save_in
;
3507 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3509 pa_get_absolute_expression (insn
, strp
)
3515 insn
->field_selector
= pa_chk_field_selector (strp
);
3516 save_in
= input_line_pointer
;
3517 input_line_pointer
= *strp
;
3518 expression (&insn
->exp
);
3519 if (insn
->exp
.X_op
!= O_constant
)
3521 as_bad ("Bad segment (should be absolute).");
3522 expr_end
= input_line_pointer
;
3523 input_line_pointer
= save_in
;
3526 expr_end
= input_line_pointer
;
3527 input_line_pointer
= save_in
;
3528 return evaluate_absolute (insn
);
3531 /* Evaluate an absolute expression EXP which may be modified by
3532 the selector FIELD_SELECTOR. Return the value of the expression. */
3534 evaluate_absolute (insn
)
3539 int field_selector
= insn
->field_selector
;
3542 value
= exp
.X_add_number
;
3544 switch (field_selector
)
3550 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3552 if (value
& 0x00000400)
3554 value
= (value
& 0xfffff800) >> 11;
3557 /* Sign extend from bit 21. */
3559 if (value
& 0x00000400)
3560 value
|= 0xfffff800;
3565 /* Arithmetic shift right 11 bits. */
3567 value
= (value
& 0xfffff800) >> 11;
3570 /* Set bits 0-20 to zero. */
3572 value
= value
& 0x7ff;
3575 /* Add 0x800 and arithmetic shift right 11 bits. */
3578 value
= (value
& 0xfffff800) >> 11;
3581 /* Set bitgs 0-21 to one. */
3583 value
|= 0xfffff800;
3586 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3588 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3592 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3597 BAD_CASE (field_selector
);
3603 /* Given an argument location specification return the associated
3604 argument location number. */
3607 pa_build_arg_reloc (type_name
)
3611 if (strncasecmp (type_name
, "no", 2) == 0)
3613 if (strncasecmp (type_name
, "gr", 2) == 0)
3615 else if (strncasecmp (type_name
, "fr", 2) == 0)
3617 else if (strncasecmp (type_name
, "fu", 2) == 0)
3620 as_bad ("Invalid argument location: %s\n", type_name
);
3625 /* Encode and return an argument relocation specification for
3626 the given register in the location specified by arg_reloc. */
3629 pa_align_arg_reloc (reg
, arg_reloc
)
3631 unsigned int arg_reloc
;
3633 unsigned int new_reloc
;
3635 new_reloc
= arg_reloc
;
3651 as_bad ("Invalid argument description: %d", reg
);
3657 /* Parse a PA nullification completer (,n). Return nonzero if the
3658 completer was found; return zero if no completer was found. */
3670 if (strncasecmp (*s
, "n", 1) == 0)
3674 as_bad ("Invalid Nullification: (%c)", **s
);
3683 /* Parse a non-negated compare/subtract completer returning the
3684 number (for encoding in instrutions) of the given completer.
3686 ISBRANCH specifies whether or not this is parsing a condition
3687 completer for a branch (vs a nullification completer for a
3688 computational instruction. */
3691 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3696 char *name
= *s
+ 1;
3704 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3708 if (strcmp (name
, "=") == 0)
3712 else if (strcmp (name
, "<") == 0)
3716 else if (strcmp (name
, "<=") == 0)
3720 else if (strcmp (name
, "<<") == 0)
3724 else if (strcmp (name
, "<<=") == 0)
3728 else if (strcasecmp (name
, "sv") == 0)
3732 else if (strcasecmp (name
, "od") == 0)
3736 /* If we have something like addb,n then there is no condition
3738 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3749 /* Reset pointers if this was really a ,n for a branch instruction. */
3750 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3756 /* Parse a negated compare/subtract completer returning the
3757 number (for encoding in instrutions) of the given completer.
3759 ISBRANCH specifies whether or not this is parsing a condition
3760 completer for a branch (vs a nullification completer for a
3761 computational instruction. */
3764 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3769 char *name
= *s
+ 1;
3777 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3781 if (strcasecmp (name
, "tr") == 0)
3785 else if (strcmp (name
, "<>") == 0)
3789 else if (strcmp (name
, ">=") == 0)
3793 else if (strcmp (name
, ">") == 0)
3797 else if (strcmp (name
, ">>=") == 0)
3801 else if (strcmp (name
, ">>") == 0)
3805 else if (strcasecmp (name
, "nsv") == 0)
3809 else if (strcasecmp (name
, "ev") == 0)
3813 /* If we have something like addb,n then there is no condition
3815 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3826 /* Reset pointers if this was really a ,n for a branch instruction. */
3827 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3833 /* Parse a non-negated addition completer returning the number
3834 (for encoding in instrutions) of the given completer.
3836 ISBRANCH specifies whether or not this is parsing a condition
3837 completer for a branch (vs a nullification completer for a
3838 computational instruction. */
3841 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3846 char *name
= *s
+ 1;
3854 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3858 if (strcmp (name
, "=") == 0)
3862 else if (strcmp (name
, "<") == 0)
3866 else if (strcmp (name
, "<=") == 0)
3870 else if (strcasecmp (name
, "nuv") == 0)
3874 else if (strcasecmp (name
, "znv") == 0)
3878 else if (strcasecmp (name
, "sv") == 0)
3882 else if (strcasecmp (name
, "od") == 0)
3886 /* If we have something like addb,n then there is no condition
3888 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3899 /* Reset pointers if this was really a ,n for a branch instruction. */
3900 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3906 /* Parse a negated addition completer returning the number
3907 (for encoding in instrutions) of the given completer.
3909 ISBRANCH specifies whether or not this is parsing a condition
3910 completer for a branch (vs a nullification completer for a
3911 computational instruction. */
3914 pa_parse_neg_add_cmpltr (s
, isbranch
)
3919 char *name
= *s
+ 1;
3927 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3931 if (strcasecmp (name
, "tr") == 0)
3935 else if (strcmp (name
, "<>") == 0)
3939 else if (strcmp (name
, ">=") == 0)
3943 else if (strcmp (name
, ">") == 0)
3947 else if (strcasecmp (name
, "uv") == 0)
3951 else if (strcasecmp (name
, "vnz") == 0)
3955 else if (strcasecmp (name
, "nsv") == 0)
3959 else if (strcasecmp (name
, "ev") == 0)
3963 /* If we have something like addb,n then there is no condition
3965 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3976 /* Reset pointers if this was really a ,n for a branch instruction. */
3977 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3983 /* Handle an alignment directive. Special so that we can update the
3984 alignment of the subspace if necessary. */
3988 /* We must have a valid space and subspace. */
3989 pa_check_current_space_and_subspace ();
3991 /* Let the generic gas code do most of the work. */
3992 s_align_bytes (bytes
);
3994 /* If bytes is a power of 2, then update the current subspace's
3995 alignment if necessary. */
3996 if (log2 (bytes
) != -1)
3997 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
4000 /* Handle a .BLOCK type pseudo-op. */
4008 unsigned int temp_size
;
4011 /* We must have a valid space and subspace. */
4012 pa_check_current_space_and_subspace ();
4014 temp_size
= get_absolute_expression ();
4016 /* Always fill with zeros, that's what the HP assembler does. */
4019 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
4020 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
4021 bzero (p
, temp_size
);
4023 /* Convert 2 bytes at a time. */
4025 for (i
= 0; i
< temp_size
; i
+= 2)
4027 md_number_to_chars (p
+ i
,
4029 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4032 pa_undefine_label ();
4033 demand_empty_rest_of_line ();
4036 /* Handle a .begin_brtab and .end_brtab pseudo-op. */
4044 /* The BRTAB relocations are only availble in SOM (to denote
4045 the beginning and end of branch tables). */
4046 char *where
= frag_more (0);
4048 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4049 NULL
, (offsetT
) 0, NULL
,
4050 0, begin
? R_HPPA_BEGIN_BRTAB
: R_HPPA_END_BRTAB
,
4051 e_fsel
, 0, 0, NULL
);
4054 demand_empty_rest_of_line ();
4057 /* Handle a .CALL pseudo-op. This involves storing away information
4058 about where arguments are to be found so the linker can detect
4059 (and correct) argument location mismatches between caller and callee. */
4065 /* We must have a valid space and subspace. */
4066 pa_check_current_space_and_subspace ();
4068 pa_call_args (&last_call_desc
);
4069 demand_empty_rest_of_line ();
4072 /* Do the dirty work of building a call descriptor which describes
4073 where the caller placed arguments to a function call. */
4076 pa_call_args (call_desc
)
4077 struct call_desc
*call_desc
;
4080 unsigned int temp
, arg_reloc
;
4082 while (!is_end_of_statement ())
4084 name
= input_line_pointer
;
4085 c
= get_symbol_end ();
4086 /* Process a source argument. */
4087 if ((strncasecmp (name
, "argw", 4) == 0))
4089 temp
= atoi (name
+ 4);
4090 p
= input_line_pointer
;
4092 input_line_pointer
++;
4093 name
= input_line_pointer
;
4094 c
= get_symbol_end ();
4095 arg_reloc
= pa_build_arg_reloc (name
);
4096 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4098 /* Process a return value. */
4099 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4101 p
= input_line_pointer
;
4103 input_line_pointer
++;
4104 name
= input_line_pointer
;
4105 c
= get_symbol_end ();
4106 arg_reloc
= pa_build_arg_reloc (name
);
4107 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4111 as_bad ("Invalid .CALL argument: %s", name
);
4113 p
= input_line_pointer
;
4115 if (!is_end_of_statement ())
4116 input_line_pointer
++;
4120 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4123 is_same_frag (frag1
, frag2
)
4130 else if (frag2
== NULL
)
4132 else if (frag1
== frag2
)
4134 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4135 return (is_same_frag (frag1
, frag2
->fr_next
));
4141 /* Build an entry in the UNWIND subspace from the given function
4142 attributes in CALL_INFO. This is not needed for SOM as using
4143 R_ENTRY and R_EXIT relocations allow the linker to handle building
4144 of the unwind spaces. */
4147 pa_build_unwind_subspace (call_info
)
4148 struct call_info
*call_info
;
4151 asection
*seg
, *save_seg
;
4152 subsegT subseg
, save_subseg
;
4156 /* Get into the right seg/subseg. This may involve creating
4157 the seg the first time through. Make sure to have the
4158 old seg/subseg so that we can reset things when we are done. */
4159 subseg
= SUBSEG_UNWIND
;
4160 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4161 if (seg
== ASEC_NULL
)
4163 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4164 bfd_set_section_flags (stdoutput
, seg
,
4165 SEC_READONLY
| SEC_HAS_CONTENTS
4166 | SEC_LOAD
| SEC_RELOC
);
4170 save_subseg
= now_subseg
;
4171 subseg_set (seg
, subseg
);
4174 /* Get some space to hold relocation information for the unwind
4177 md_number_to_chars (p
, 0, 4);
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_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4185 md_number_to_chars (p
, 0, 4);
4187 /* Relocation info. for end offset of the function.
4189 Because we allow reductions of 32bit relocations for ELF, this will be
4190 reduced to section_sym + offset which avoids putting the temporary
4191 symbol into the symbol table. It (should) end up giving the same
4192 value as call_info->start_symbol + function size once the linker is
4193 finished with its work. */
4195 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4196 call_info
->end_symbol
, (offsetT
) 0,
4197 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4200 unwind
= (char *) &call_info
->ci_unwind
;
4201 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4205 FRAG_APPEND_1_CHAR (c
);
4209 /* Return back to the original segment/subsegment. */
4210 subseg_set (save_seg
, save_subseg
);
4214 /* Process a .CALLINFO pseudo-op. This information is used later
4215 to build unwind descriptors and maybe one day to support
4216 .ENTER and .LEAVE. */
4219 pa_callinfo (unused
)
4225 /* We must have a valid space and subspace. */
4226 pa_check_current_space_and_subspace ();
4228 /* .CALLINFO must appear within a procedure definition. */
4229 if (!within_procedure
)
4230 as_bad (".callinfo is not within a procedure definition");
4232 /* Mark the fact that we found the .CALLINFO for the
4233 current procedure. */
4234 callinfo_found
= TRUE
;
4236 /* Iterate over the .CALLINFO arguments. */
4237 while (!is_end_of_statement ())
4239 name
= input_line_pointer
;
4240 c
= get_symbol_end ();
4241 /* Frame size specification. */
4242 if ((strncasecmp (name
, "frame", 5) == 0))
4244 p
= input_line_pointer
;
4246 input_line_pointer
++;
4247 temp
= get_absolute_expression ();
4248 if ((temp
& 0x3) != 0)
4250 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4254 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4255 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4258 /* Entry register (GR, GR and SR) specifications. */
4259 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4261 p
= input_line_pointer
;
4263 input_line_pointer
++;
4264 temp
= get_absolute_expression ();
4265 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4266 even though %r19 is caller saved. I think this is a bug in
4267 the HP assembler, and we are not going to emulate it. */
4268 if (temp
< 3 || temp
> 18)
4269 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4270 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4272 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4274 p
= input_line_pointer
;
4276 input_line_pointer
++;
4277 temp
= get_absolute_expression ();
4278 /* Similarly the HP assembler takes 31 as the high bound even
4279 though %fr21 is the last callee saved floating point register. */
4280 if (temp
< 12 || temp
> 21)
4281 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4282 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4284 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4286 p
= input_line_pointer
;
4288 input_line_pointer
++;
4289 temp
= get_absolute_expression ();
4291 as_bad ("Value for ENTRY_SR must be 3\n");
4293 /* Note whether or not this function performs any calls. */
4294 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4295 (strncasecmp (name
, "caller", 6) == 0))
4297 p
= input_line_pointer
;
4300 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4302 p
= input_line_pointer
;
4305 /* Should RP be saved into the stack. */
4306 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4308 p
= input_line_pointer
;
4310 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4312 /* Likewise for SP. */
4313 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4315 p
= input_line_pointer
;
4317 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4319 /* Is this an unwindable procedure. If so mark it so
4320 in the unwind descriptor. */
4321 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4323 p
= input_line_pointer
;
4325 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4327 /* Is this an interrupt routine. If so mark it in the
4328 unwind descriptor. */
4329 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4331 p
= input_line_pointer
;
4333 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4335 /* Is this a millicode routine. "millicode" isn't in my
4336 assembler manual, but my copy is old. The HP assembler
4337 accepts it, and there's a place in the unwind descriptor
4338 to drop the information, so we'll accept it too. */
4339 else if ((strncasecmp (name
, "millicode", 9) == 0))
4341 p
= input_line_pointer
;
4343 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4347 as_bad ("Invalid .CALLINFO argument: %s", name
);
4348 *input_line_pointer
= c
;
4350 if (!is_end_of_statement ())
4351 input_line_pointer
++;
4354 demand_empty_rest_of_line ();
4357 /* Switch into the code subspace. */
4363 current_space
= is_defined_space ("$TEXT$");
4365 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
4367 pa_undefine_label ();
4370 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4371 the .comm pseudo-op has the following symtax:
4373 <label> .comm <length>
4375 where <label> is optional and is a symbol whose address will be the start of
4376 a block of memory <length> bytes long. <length> must be an absolute
4377 expression. <length> bytes will be allocated in the current space
4380 Also note the label may not even be on the same line as the .comm.
4382 This difference in syntax means the colon function will be called
4383 on the symbol before we arrive in pa_comm. colon will set a number
4384 of attributes of the symbol that need to be fixed here. In particular
4385 the value, section pointer, fragment pointer, flags, etc. What
4388 This also makes error detection all but impossible. */
4396 label_symbol_struct
*label_symbol
= pa_get_label ();
4399 symbol
= label_symbol
->lss_label
;
4404 size
= get_absolute_expression ();
4408 S_SET_VALUE (symbol
, size
);
4409 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4410 S_SET_EXTERNAL (symbol
);
4412 /* colon() has already set the frag to the current location in the
4413 current subspace; we need to reset the fragment to the zero address
4414 fragment. We also need to reset the segment pointer. */
4415 symbol
->sy_frag
= &zero_address_frag
;
4417 demand_empty_rest_of_line ();
4420 /* Process a .END pseudo-op. */
4426 demand_empty_rest_of_line ();
4429 /* Process a .ENTER pseudo-op. This is not supported. */
4434 /* We must have a valid space and subspace. */
4435 pa_check_current_space_and_subspace ();
4440 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4446 /* We must have a valid space and subspace. */
4447 pa_check_current_space_and_subspace ();
4449 if (!within_procedure
)
4450 as_bad ("Misplaced .entry. Ignored.");
4453 if (!callinfo_found
)
4454 as_bad ("Missing .callinfo.");
4456 demand_empty_rest_of_line ();
4457 within_entry_exit
= TRUE
;
4460 /* SOM defers building of unwind descriptors until the link phase.
4461 The assembler is responsible for creating an R_ENTRY relocation
4462 to mark the beginning of a region and hold the unwind bits, and
4463 for creating an R_EXIT relocation to mark the end of the region.
4465 FIXME. ELF should be using the same conventions! The problem
4466 is an unwind requires too much relocation space. Hmmm. Maybe
4467 if we split the unwind bits up between the relocations which
4468 denote the entry and exit points. */
4469 if (last_call_info
->start_symbol
!= NULL
)
4471 char *where
= frag_more (0);
4473 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4474 NULL
, (offsetT
) 0, NULL
,
4475 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4476 (int *) &last_call_info
->ci_unwind
.descriptor
);
4481 /* Handle a .EQU pseudo-op. */
4487 label_symbol_struct
*label_symbol
= pa_get_label ();
4492 symbol
= label_symbol
->lss_label
;
4494 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4496 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4497 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4502 as_bad (".REG must use a label");
4504 as_bad (".EQU must use a label");
4507 pa_undefine_label ();
4508 demand_empty_rest_of_line ();
4511 /* Helper function. Does processing for the end of a function. This
4512 usually involves creating some relocations or building special
4513 symbols to mark the end of the function. */
4520 where
= frag_more (0);
4523 /* Mark the end of the function, stuff away the location of the frag
4524 for the end of the function, and finally call pa_build_unwind_subspace
4525 to add an entry in the unwind table. */
4526 hppa_elf_mark_end_of_function ();
4527 pa_build_unwind_subspace (last_call_info
);
4529 /* SOM defers building of unwind descriptors until the link phase.
4530 The assembler is responsible for creating an R_ENTRY relocation
4531 to mark the beginning of a region and hold the unwind bits, and
4532 for creating an R_EXIT relocation to mark the end of the region.
4534 FIXME. ELF should be using the same conventions! The problem
4535 is an unwind requires too much relocation space. Hmmm. Maybe
4536 if we split the unwind bits up between the relocations which
4537 denote the entry and exit points. */
4538 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4540 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4541 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4545 /* Process a .EXIT pseudo-op. */
4551 /* We must have a valid space and subspace. */
4552 pa_check_current_space_and_subspace ();
4554 if (!within_procedure
)
4555 as_bad (".EXIT must appear within a procedure");
4558 if (!callinfo_found
)
4559 as_bad ("Missing .callinfo");
4562 if (!within_entry_exit
)
4563 as_bad ("No .ENTRY for this .EXIT");
4566 within_entry_exit
= FALSE
;
4571 demand_empty_rest_of_line ();
4574 /* Process a .EXPORT directive. This makes functions external
4575 and provides information such as argument relocation entries
4585 name
= input_line_pointer
;
4586 c
= get_symbol_end ();
4587 /* Make sure the given symbol exists. */
4588 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4590 as_bad ("Cannot define export symbol: %s\n", name
);
4591 p
= input_line_pointer
;
4593 input_line_pointer
++;
4597 /* OK. Set the external bits and process argument relocations. */
4598 S_SET_EXTERNAL (symbol
);
4599 p
= input_line_pointer
;
4601 if (!is_end_of_statement ())
4603 input_line_pointer
++;
4604 pa_type_args (symbol
, 1);
4608 demand_empty_rest_of_line ();
4611 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4614 pa_type_args (symbolP
, is_export
)
4619 unsigned int temp
, arg_reloc
;
4620 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4621 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4623 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4626 input_line_pointer
+= 8;
4627 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4628 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4629 type
= SYMBOL_TYPE_ABSOLUTE
;
4631 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4633 input_line_pointer
+= 4;
4634 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4635 instead one should be IMPORTing/EXPORTing ENTRY types.
4637 Complain if one tries to EXPORT a CODE type since that's never
4638 done. Both GCC and HP C still try to IMPORT CODE types, so
4639 silently fix them to be ENTRY types. */
4640 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4643 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4645 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4646 type
= SYMBOL_TYPE_ENTRY
;
4650 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4651 type
= SYMBOL_TYPE_CODE
;
4654 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4656 input_line_pointer
+= 4;
4657 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4658 type
= SYMBOL_TYPE_DATA
;
4660 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4662 input_line_pointer
+= 5;
4663 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4664 type
= SYMBOL_TYPE_ENTRY
;
4666 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4668 input_line_pointer
+= 9;
4669 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4670 type
= SYMBOL_TYPE_MILLICODE
;
4672 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4674 input_line_pointer
+= 6;
4675 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4676 type
= SYMBOL_TYPE_PLABEL
;
4678 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4680 input_line_pointer
+= 8;
4681 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4682 type
= SYMBOL_TYPE_PRI_PROG
;
4684 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4686 input_line_pointer
+= 8;
4687 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4688 type
= SYMBOL_TYPE_SEC_PROG
;
4691 /* SOM requires much more information about symbol types
4692 than BFD understands. This is how we get this information
4693 to the SOM BFD backend. */
4694 #ifdef obj_set_symbol_type
4695 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4698 /* Now that the type of the exported symbol has been handled,
4699 handle any argument relocation information. */
4700 while (!is_end_of_statement ())
4702 if (*input_line_pointer
== ',')
4703 input_line_pointer
++;
4704 name
= input_line_pointer
;
4705 c
= get_symbol_end ();
4706 /* Argument sources. */
4707 if ((strncasecmp (name
, "argw", 4) == 0))
4709 p
= input_line_pointer
;
4711 input_line_pointer
++;
4712 temp
= atoi (name
+ 4);
4713 name
= input_line_pointer
;
4714 c
= get_symbol_end ();
4715 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4716 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4717 *input_line_pointer
= c
;
4719 /* The return value. */
4720 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4722 p
= input_line_pointer
;
4724 input_line_pointer
++;
4725 name
= input_line_pointer
;
4726 c
= get_symbol_end ();
4727 arg_reloc
= pa_build_arg_reloc (name
);
4728 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4729 *input_line_pointer
= c
;
4731 /* Privelege level. */
4732 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4734 p
= input_line_pointer
;
4736 input_line_pointer
++;
4737 temp
= atoi (input_line_pointer
);
4738 c
= get_symbol_end ();
4739 *input_line_pointer
= c
;
4743 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4744 p
= input_line_pointer
;
4747 if (!is_end_of_statement ())
4748 input_line_pointer
++;
4752 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4753 assembly file must either be defined in the assembly file, or
4754 explicitly IMPORTED from another. */
4763 name
= input_line_pointer
;
4764 c
= get_symbol_end ();
4766 symbol
= symbol_find (name
);
4767 /* Ugh. We might be importing a symbol defined earlier in the file,
4768 in which case all the code below will really screw things up
4769 (set the wrong segment, symbol flags & type, etc). */
4770 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4772 symbol
= symbol_find_or_make (name
);
4773 p
= input_line_pointer
;
4776 if (!is_end_of_statement ())
4778 input_line_pointer
++;
4779 pa_type_args (symbol
, 0);
4783 /* Sigh. To be compatable with the HP assembler and to help
4784 poorly written assembly code, we assign a type based on
4785 the the current segment. Note only BSF_FUNCTION really
4786 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4787 if (now_seg
== text_section
)
4788 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4790 /* If the section is undefined, then the symbol is undefined
4791 Since this is an import, leave the section undefined. */
4792 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4797 /* The symbol was already defined. Just eat everything up to
4798 the end of the current statement. */
4799 while (!is_end_of_statement ())
4800 input_line_pointer
++;
4803 demand_empty_rest_of_line ();
4806 /* Handle a .LABEL pseudo-op. */
4814 name
= input_line_pointer
;
4815 c
= get_symbol_end ();
4817 if (strlen (name
) > 0)
4820 p
= input_line_pointer
;
4825 as_warn ("Missing label name on .LABEL");
4828 if (!is_end_of_statement ())
4830 as_warn ("extra .LABEL arguments ignored.");
4831 ignore_rest_of_line ();
4833 demand_empty_rest_of_line ();
4836 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4842 /* We must have a valid space and subspace. */
4843 pa_check_current_space_and_subspace ();
4848 /* Handle a .ORIGIN pseudo-op. */
4854 /* We must have a valid space and subspace. */
4855 pa_check_current_space_and_subspace ();
4858 pa_undefine_label ();
4861 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4862 is for static functions. FIXME. Should share more code with .EXPORT. */
4871 name
= input_line_pointer
;
4872 c
= get_symbol_end ();
4874 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4876 as_bad ("Cannot define static symbol: %s\n", name
);
4877 p
= input_line_pointer
;
4879 input_line_pointer
++;
4883 S_CLEAR_EXTERNAL (symbol
);
4884 p
= input_line_pointer
;
4886 if (!is_end_of_statement ())
4888 input_line_pointer
++;
4889 pa_type_args (symbol
, 0);
4893 demand_empty_rest_of_line ();
4896 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4897 of a procedure from a syntatical point of view. */
4903 struct call_info
*call_info
;
4905 /* We must have a valid space and subspace. */
4906 pa_check_current_space_and_subspace ();
4908 if (within_procedure
)
4909 as_fatal ("Nested procedures");
4911 /* Reset global variables for new procedure. */
4912 callinfo_found
= FALSE
;
4913 within_procedure
= TRUE
;
4915 /* Create another call_info structure. */
4916 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4919 as_fatal ("Cannot allocate unwind descriptor\n");
4921 bzero (call_info
, sizeof (struct call_info
));
4923 call_info
->ci_next
= NULL
;
4925 if (call_info_root
== NULL
)
4927 call_info_root
= call_info
;
4928 last_call_info
= call_info
;
4932 last_call_info
->ci_next
= call_info
;
4933 last_call_info
= call_info
;
4936 /* set up defaults on call_info structure */
4938 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4939 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4940 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4942 /* If we got a .PROC pseudo-op, we know that the function is defined
4943 locally. Make sure it gets into the symbol table. */
4945 label_symbol_struct
*label_symbol
= pa_get_label ();
4949 if (label_symbol
->lss_label
)
4951 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4952 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4955 as_bad ("Missing function name for .PROC (corrupted label chain)");
4958 last_call_info
->start_symbol
= NULL
;
4961 demand_empty_rest_of_line ();
4964 /* Process the syntatical end of a procedure. Make sure all the
4965 appropriate pseudo-ops were found within the procedure. */
4972 /* We must have a valid space and subspace. */
4973 pa_check_current_space_and_subspace ();
4975 /* If we are within a procedure definition, make sure we've
4976 defined a label for the procedure; handle case where the
4977 label was defined after the .PROC directive.
4979 Note there's not need to diddle with the segment or fragment
4980 for the label symbol in this case. We have already switched
4981 into the new $CODE$ subspace at this point. */
4982 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4984 label_symbol_struct
*label_symbol
= pa_get_label ();
4988 if (label_symbol
->lss_label
)
4990 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4991 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4993 /* Also handle allocation of a fixup to hold the unwind
4994 information when the label appears after the proc/procend. */
4995 if (within_entry_exit
)
4997 char *where
= frag_more (0);
4999 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
5000 NULL
, (offsetT
) 0, NULL
,
5001 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
5002 (int *) &last_call_info
->ci_unwind
.descriptor
);
5007 as_bad ("Missing function name for .PROC (corrupted label chain)");
5010 as_bad ("Missing function name for .PROC");
5013 if (!within_procedure
)
5014 as_bad ("misplaced .procend");
5016 if (!callinfo_found
)
5017 as_bad ("Missing .callinfo for this procedure");
5019 if (within_entry_exit
)
5020 as_bad ("Missing .EXIT for a .ENTRY");
5023 /* ELF needs to mark the end of each function so that it can compute
5024 the size of the function (apparently its needed in the symbol table). */
5025 hppa_elf_mark_end_of_function ();
5028 within_procedure
= FALSE
;
5029 demand_empty_rest_of_line ();
5030 pa_undefine_label ();
5033 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5034 then create a new space entry to hold the information specified
5035 by the parameters to the .SPACE directive. */
5037 static sd_chain_struct
*
5038 pa_parse_space_stmt (space_name
, create_flag
)
5042 char *name
, *ptemp
, c
;
5043 char loadable
, defined
, private, sort
;
5045 asection
*seg
= NULL
;
5046 sd_chain_struct
*space
;
5048 /* load default values */
5054 if (strcmp (space_name
, "$TEXT$") == 0)
5056 seg
= pa_def_spaces
[0].segment
;
5057 defined
= pa_def_spaces
[0].defined
;
5058 private = pa_def_spaces
[0].private;
5059 sort
= pa_def_spaces
[0].sort
;
5060 spnum
= pa_def_spaces
[0].spnum
;
5062 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5064 seg
= pa_def_spaces
[1].segment
;
5065 defined
= pa_def_spaces
[1].defined
;
5066 private = pa_def_spaces
[1].private;
5067 sort
= pa_def_spaces
[1].sort
;
5068 spnum
= pa_def_spaces
[1].spnum
;
5071 if (!is_end_of_statement ())
5073 print_errors
= FALSE
;
5074 ptemp
= input_line_pointer
+ 1;
5075 /* First see if the space was specified as a number rather than
5076 as a name. According to the PA assembly manual the rest of
5077 the line should be ignored. */
5078 temp
= pa_parse_number (&ptemp
, 0);
5082 input_line_pointer
= ptemp
;
5086 while (!is_end_of_statement ())
5088 input_line_pointer
++;
5089 name
= input_line_pointer
;
5090 c
= get_symbol_end ();
5091 if ((strncasecmp (name
, "spnum", 5) == 0))
5093 *input_line_pointer
= c
;
5094 input_line_pointer
++;
5095 spnum
= get_absolute_expression ();
5097 else if ((strncasecmp (name
, "sort", 4) == 0))
5099 *input_line_pointer
= c
;
5100 input_line_pointer
++;
5101 sort
= get_absolute_expression ();
5103 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5105 *input_line_pointer
= c
;
5108 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5110 *input_line_pointer
= c
;
5113 else if ((strncasecmp (name
, "private", 7) == 0))
5115 *input_line_pointer
= c
;
5120 as_bad ("Invalid .SPACE argument");
5121 *input_line_pointer
= c
;
5122 if (!is_end_of_statement ())
5123 input_line_pointer
++;
5127 print_errors
= TRUE
;
5130 if (create_flag
&& seg
== NULL
)
5131 seg
= subseg_new (space_name
, 0);
5133 /* If create_flag is nonzero, then create the new space with
5134 the attributes computed above. Else set the values in
5135 an already existing space -- this can only happen for
5136 the first occurence of a built-in space. */
5138 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5139 private, sort
, seg
, 1);
5142 space
= is_defined_space (space_name
);
5143 SPACE_SPNUM (space
) = spnum
;
5144 SPACE_DEFINED (space
) = defined
& 1;
5145 SPACE_USER_DEFINED (space
) = 1;
5148 #ifdef obj_set_section_attributes
5149 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5155 /* Handle a .SPACE pseudo-op; this switches the current space to the
5156 given space, creating the new space if necessary. */
5162 char *name
, c
, *space_name
, *save_s
;
5164 sd_chain_struct
*sd_chain
;
5166 if (within_procedure
)
5168 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5169 ignore_rest_of_line ();
5173 /* Check for some of the predefined spaces. FIXME: most of the code
5174 below is repeated several times, can we extract the common parts
5175 and place them into a subroutine or something similar? */
5176 /* FIXME Is this (and the next IF stmt) really right?
5177 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5178 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5180 input_line_pointer
+= 6;
5181 sd_chain
= is_defined_space ("$TEXT$");
5182 if (sd_chain
== NULL
)
5183 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5184 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5185 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5187 current_space
= sd_chain
;
5188 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5190 = pa_subsegment_to_subspace (text_section
,
5191 sd_chain
->sd_last_subseg
);
5192 demand_empty_rest_of_line ();
5195 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5197 input_line_pointer
+= 9;
5198 sd_chain
= is_defined_space ("$PRIVATE$");
5199 if (sd_chain
== NULL
)
5200 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5201 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5202 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5204 current_space
= sd_chain
;
5205 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5207 = pa_subsegment_to_subspace (data_section
,
5208 sd_chain
->sd_last_subseg
);
5209 demand_empty_rest_of_line ();
5212 if (!strncasecmp (input_line_pointer
,
5213 GDB_DEBUG_SPACE_NAME
,
5214 strlen (GDB_DEBUG_SPACE_NAME
)))
5216 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5217 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5218 if (sd_chain
== NULL
)
5219 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5220 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5221 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5223 current_space
= sd_chain
;
5226 asection
*gdb_section
5227 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5229 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5231 = pa_subsegment_to_subspace (gdb_section
,
5232 sd_chain
->sd_last_subseg
);
5234 demand_empty_rest_of_line ();
5238 /* It could be a space specified by number. */
5240 save_s
= input_line_pointer
;
5241 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5243 if ((sd_chain
= pa_find_space_by_number (temp
)))
5245 current_space
= sd_chain
;
5247 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5249 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5250 sd_chain
->sd_last_subseg
);
5251 demand_empty_rest_of_line ();
5256 /* Not a number, attempt to create a new space. */
5258 input_line_pointer
= save_s
;
5259 name
= input_line_pointer
;
5260 c
= get_symbol_end ();
5261 space_name
= xmalloc (strlen (name
) + 1);
5262 strcpy (space_name
, name
);
5263 *input_line_pointer
= c
;
5265 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5266 current_space
= sd_chain
;
5268 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5269 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5270 sd_chain
->sd_last_subseg
);
5271 demand_empty_rest_of_line ();
5275 /* Switch to a new space. (I think). FIXME. */
5284 sd_chain_struct
*space
;
5286 name
= input_line_pointer
;
5287 c
= get_symbol_end ();
5288 space
= is_defined_space (name
);
5292 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5295 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5297 *input_line_pointer
= c
;
5298 demand_empty_rest_of_line ();
5301 /* If VALUE is an exact power of two between zero and 2^31, then
5302 return log2 (VALUE). Else return -1. */
5310 while ((1 << shift
) != value
&& shift
< 32)
5319 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5320 given subspace, creating the new subspace if necessary.
5322 FIXME. Should mirror pa_space more closely, in particular how
5323 they're broken up into subroutines. */
5326 pa_subspace (create_new
)
5329 char *name
, *ss_name
, *alias
, c
;
5330 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5331 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5332 sd_chain_struct
*space
;
5333 ssd_chain_struct
*ssd
;
5336 if (current_space
== NULL
)
5337 as_fatal ("Must be in a space before changing or declaring subspaces.\n");
5339 if (within_procedure
)
5341 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5342 ignore_rest_of_line ();
5346 name
= input_line_pointer
;
5347 c
= get_symbol_end ();
5348 ss_name
= xmalloc (strlen (name
) + 1);
5349 strcpy (ss_name
, name
);
5350 *input_line_pointer
= c
;
5352 /* Load default values. */
5365 space
= current_space
;
5369 ssd
= is_defined_subspace (ss_name
);
5370 /* Allow user to override the builtin attributes of subspaces. But
5371 only allow the attributes to be changed once! */
5372 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5374 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5375 current_subspace
= ssd
;
5376 if (!is_end_of_statement ())
5377 as_warn ("Parameters of an existing subspace can\'t be modified");
5378 demand_empty_rest_of_line ();
5383 /* A new subspace. Load default values if it matches one of
5384 the builtin subspaces. */
5386 while (pa_def_subspaces
[i
].name
)
5388 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5390 loadable
= pa_def_subspaces
[i
].loadable
;
5391 common
= pa_def_subspaces
[i
].common
;
5392 dup_common
= pa_def_subspaces
[i
].dup_common
;
5393 code_only
= pa_def_subspaces
[i
].code_only
;
5394 zero
= pa_def_subspaces
[i
].zero
;
5395 space_index
= pa_def_subspaces
[i
].space_index
;
5396 alignment
= pa_def_subspaces
[i
].alignment
;
5397 quadrant
= pa_def_subspaces
[i
].quadrant
;
5398 access
= pa_def_subspaces
[i
].access
;
5399 sort
= pa_def_subspaces
[i
].sort
;
5400 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5401 alias
= pa_def_subspaces
[i
].alias
;
5408 /* We should be working with a new subspace now. Fill in
5409 any information as specified by the user. */
5410 if (!is_end_of_statement ())
5412 input_line_pointer
++;
5413 while (!is_end_of_statement ())
5415 name
= input_line_pointer
;
5416 c
= get_symbol_end ();
5417 if ((strncasecmp (name
, "quad", 4) == 0))
5419 *input_line_pointer
= c
;
5420 input_line_pointer
++;
5421 quadrant
= get_absolute_expression ();
5423 else if ((strncasecmp (name
, "align", 5) == 0))
5425 *input_line_pointer
= c
;
5426 input_line_pointer
++;
5427 alignment
= get_absolute_expression ();
5428 if (log2 (alignment
) == -1)
5430 as_bad ("Alignment must be a power of 2");
5434 else if ((strncasecmp (name
, "access", 6) == 0))
5436 *input_line_pointer
= c
;
5437 input_line_pointer
++;
5438 access
= get_absolute_expression ();
5440 else if ((strncasecmp (name
, "sort", 4) == 0))
5442 *input_line_pointer
= c
;
5443 input_line_pointer
++;
5444 sort
= get_absolute_expression ();
5446 else if ((strncasecmp (name
, "code_only", 9) == 0))
5448 *input_line_pointer
= c
;
5451 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5453 *input_line_pointer
= c
;
5456 else if ((strncasecmp (name
, "common", 6) == 0))
5458 *input_line_pointer
= c
;
5461 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5463 *input_line_pointer
= c
;
5466 else if ((strncasecmp (name
, "zero", 4) == 0))
5468 *input_line_pointer
= c
;
5471 else if ((strncasecmp (name
, "first", 5) == 0))
5472 as_bad ("FIRST not supported as a .SUBSPACE argument");
5474 as_bad ("Invalid .SUBSPACE argument");
5475 if (!is_end_of_statement ())
5476 input_line_pointer
++;
5480 /* Compute a reasonable set of BFD flags based on the information
5481 in the .subspace directive. */
5482 applicable
= bfd_applicable_section_flags (stdoutput
);
5485 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5488 if (common
|| dup_common
)
5489 flags
|= SEC_IS_COMMON
;
5491 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5493 /* This is a zero-filled subspace (eg BSS). */
5495 flags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
5497 applicable
&= flags
;
5499 /* If this is an existing subspace, then we want to use the
5500 segment already associated with the subspace.
5502 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5503 lots of sections. It might be a problem in the PA ELF
5504 code, I do not know yet. For now avoid creating anything
5505 but the "standard" sections for ELF. */
5507 section
= subseg_force_new (ss_name
, 0);
5509 section
= ssd
->ssd_seg
;
5511 section
= subseg_new (alias
, 0);
5512 else if (!alias
&& USE_ALIASES
)
5514 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5515 demand_empty_rest_of_line ();
5519 section
= subseg_new (ss_name
, 0);
5522 seg_info (section
)->bss
= 1;
5524 /* Now set the flags. */
5525 bfd_set_section_flags (stdoutput
, section
, applicable
);
5527 /* Record any alignment request for this section. */
5528 record_alignment (section
, log2 (alignment
));
5530 /* Set the starting offset for this section. */
5531 bfd_set_section_vma (stdoutput
, section
,
5532 pa_subspace_start (space
, quadrant
));
5534 /* Now that all the flags are set, update an existing subspace,
5535 or create a new one. */
5538 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5539 code_only
, common
, dup_common
,
5540 sort
, zero
, access
, space_index
,
5541 alignment
, quadrant
,
5544 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5546 dup_common
, zero
, sort
,
5547 access
, space_index
,
5548 alignment
, quadrant
, section
);
5550 demand_empty_rest_of_line ();
5551 current_subspace
->ssd_seg
= section
;
5552 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5554 SUBSPACE_DEFINED (current_subspace
) = 1;
5558 /* Create default space and subspace dictionaries. */
5565 space_dict_root
= NULL
;
5566 space_dict_last
= NULL
;
5569 while (pa_def_spaces
[i
].name
)
5573 /* Pick the right name to use for the new section. */
5574 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5575 name
= pa_def_spaces
[i
].alias
;
5577 name
= pa_def_spaces
[i
].name
;
5579 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5580 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5581 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5582 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5583 pa_def_spaces
[i
].segment
, 0);
5588 while (pa_def_subspaces
[i
].name
)
5591 int applicable
, subsegment
;
5592 asection
*segment
= NULL
;
5593 sd_chain_struct
*space
;
5595 /* Pick the right name for the new section and pick the right
5596 subsegment number. */
5597 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5599 name
= pa_def_subspaces
[i
].alias
;
5600 subsegment
= pa_def_subspaces
[i
].subsegment
;
5604 name
= pa_def_subspaces
[i
].name
;
5608 /* Create the new section. */
5609 segment
= subseg_new (name
, subsegment
);
5612 /* For SOM we want to replace the standard .text, .data, and .bss
5613 sections with our own. We also want to set BFD flags for
5614 all the built-in subspaces. */
5615 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5617 text_section
= segment
;
5618 applicable
= bfd_applicable_section_flags (stdoutput
);
5619 bfd_set_section_flags (stdoutput
, segment
,
5620 applicable
& (SEC_ALLOC
| SEC_LOAD
5621 | SEC_RELOC
| SEC_CODE
5623 | SEC_HAS_CONTENTS
));
5625 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5627 data_section
= segment
;
5628 applicable
= bfd_applicable_section_flags (stdoutput
);
5629 bfd_set_section_flags (stdoutput
, segment
,
5630 applicable
& (SEC_ALLOC
| SEC_LOAD
5632 | SEC_HAS_CONTENTS
));
5636 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5638 bss_section
= segment
;
5639 applicable
= bfd_applicable_section_flags (stdoutput
);
5640 bfd_set_section_flags (stdoutput
, segment
,
5641 applicable
& SEC_ALLOC
);
5643 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5645 applicable
= bfd_applicable_section_flags (stdoutput
);
5646 bfd_set_section_flags (stdoutput
, segment
,
5647 applicable
& (SEC_ALLOC
| SEC_LOAD
5650 | SEC_HAS_CONTENTS
));
5652 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5654 applicable
= bfd_applicable_section_flags (stdoutput
);
5655 bfd_set_section_flags (stdoutput
, segment
,
5656 applicable
& (SEC_ALLOC
| SEC_LOAD
5659 | SEC_HAS_CONTENTS
));
5662 /* Find the space associated with this subspace. */
5663 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5664 def_space_index
].segment
);
5667 as_fatal ("Internal error: Unable to find containing space for %s.",
5668 pa_def_subspaces
[i
].name
);
5671 create_new_subspace (space
, name
,
5672 pa_def_subspaces
[i
].loadable
,
5673 pa_def_subspaces
[i
].code_only
,
5674 pa_def_subspaces
[i
].common
,
5675 pa_def_subspaces
[i
].dup_common
,
5676 pa_def_subspaces
[i
].zero
,
5677 pa_def_subspaces
[i
].sort
,
5678 pa_def_subspaces
[i
].access
,
5679 pa_def_subspaces
[i
].space_index
,
5680 pa_def_subspaces
[i
].alignment
,
5681 pa_def_subspaces
[i
].quadrant
,
5689 /* Create a new space NAME, with the appropriate flags as defined
5690 by the given parameters. */
5692 static sd_chain_struct
*
5693 create_new_space (name
, spnum
, loadable
, defined
, private,
5694 sort
, seg
, user_defined
)
5704 sd_chain_struct
*chain_entry
;
5706 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5708 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5711 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5712 strcpy (SPACE_NAME (chain_entry
), name
);
5713 SPACE_DEFINED (chain_entry
) = defined
;
5714 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5715 SPACE_SPNUM (chain_entry
) = spnum
;
5717 chain_entry
->sd_seg
= seg
;
5718 chain_entry
->sd_last_subseg
= -1;
5719 chain_entry
->sd_subspaces
= NULL
;
5720 chain_entry
->sd_next
= NULL
;
5722 /* Find spot for the new space based on its sort key. */
5723 if (!space_dict_last
)
5724 space_dict_last
= chain_entry
;
5726 if (space_dict_root
== NULL
)
5727 space_dict_root
= chain_entry
;
5730 sd_chain_struct
*chain_pointer
;
5731 sd_chain_struct
*prev_chain_pointer
;
5733 chain_pointer
= space_dict_root
;
5734 prev_chain_pointer
= NULL
;
5736 while (chain_pointer
)
5738 prev_chain_pointer
= chain_pointer
;
5739 chain_pointer
= chain_pointer
->sd_next
;
5742 /* At this point we've found the correct place to add the new
5743 entry. So add it and update the linked lists as appropriate. */
5744 if (prev_chain_pointer
)
5746 chain_entry
->sd_next
= chain_pointer
;
5747 prev_chain_pointer
->sd_next
= chain_entry
;
5751 space_dict_root
= chain_entry
;
5752 chain_entry
->sd_next
= chain_pointer
;
5755 if (chain_entry
->sd_next
== NULL
)
5756 space_dict_last
= chain_entry
;
5759 /* This is here to catch predefined spaces which do not get
5760 modified by the user's input. Another call is found at
5761 the bottom of pa_parse_space_stmt to handle cases where
5762 the user modifies a predefined space. */
5763 #ifdef obj_set_section_attributes
5764 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5770 /* Create a new subspace NAME, with the appropriate flags as defined
5771 by the given parameters.
5773 Add the new subspace to the subspace dictionary chain in numerical
5774 order as defined by the SORT entries. */
5776 static ssd_chain_struct
*
5777 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5778 dup_common
, is_zero
, sort
, access
, space_index
,
5779 alignment
, quadrant
, seg
)
5780 sd_chain_struct
*space
;
5782 int loadable
, code_only
, common
, dup_common
, is_zero
;
5790 ssd_chain_struct
*chain_entry
;
5792 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5794 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5796 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5797 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5799 /* Initialize subspace_defined. When we hit a .subspace directive
5800 we'll set it to 1 which "locks-in" the subspace attributes. */
5801 SUBSPACE_DEFINED (chain_entry
) = 0;
5803 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5804 chain_entry
->ssd_seg
= seg
;
5805 chain_entry
->ssd_next
= NULL
;
5807 /* Find spot for the new subspace based on its sort key. */
5808 if (space
->sd_subspaces
== NULL
)
5809 space
->sd_subspaces
= chain_entry
;
5812 ssd_chain_struct
*chain_pointer
;
5813 ssd_chain_struct
*prev_chain_pointer
;
5815 chain_pointer
= space
->sd_subspaces
;
5816 prev_chain_pointer
= NULL
;
5818 while (chain_pointer
)
5820 prev_chain_pointer
= chain_pointer
;
5821 chain_pointer
= chain_pointer
->ssd_next
;
5824 /* Now we have somewhere to put the new entry. Insert it and update
5826 if (prev_chain_pointer
)
5828 chain_entry
->ssd_next
= chain_pointer
;
5829 prev_chain_pointer
->ssd_next
= chain_entry
;
5833 space
->sd_subspaces
= chain_entry
;
5834 chain_entry
->ssd_next
= chain_pointer
;
5838 #ifdef obj_set_subsection_attributes
5839 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5846 /* Update the information for the given subspace based upon the
5847 various arguments. Return the modified subspace chain entry. */
5849 static ssd_chain_struct
*
5850 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5851 zero
, access
, space_index
, alignment
, quadrant
, section
)
5852 sd_chain_struct
*space
;
5866 ssd_chain_struct
*chain_entry
;
5868 chain_entry
= is_defined_subspace (name
);
5870 #ifdef obj_set_subsection_attributes
5871 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5878 /* Return the space chain entry for the space with the name NAME or
5879 NULL if no such space exists. */
5881 static sd_chain_struct
*
5882 is_defined_space (name
)
5885 sd_chain_struct
*chain_pointer
;
5887 for (chain_pointer
= space_dict_root
;
5889 chain_pointer
= chain_pointer
->sd_next
)
5891 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5892 return chain_pointer
;
5895 /* No mapping from segment to space was found. Return NULL. */
5899 /* Find and return the space associated with the given seg. If no mapping
5900 from the given seg to a space is found, then return NULL.
5902 Unlike subspaces, the number of spaces is not expected to grow much,
5903 so a linear exhaustive search is OK here. */
5905 static sd_chain_struct
*
5906 pa_segment_to_space (seg
)
5909 sd_chain_struct
*space_chain
;
5911 /* Walk through each space looking for the correct mapping. */
5912 for (space_chain
= space_dict_root
;
5914 space_chain
= space_chain
->sd_next
)
5916 if (space_chain
->sd_seg
== seg
)
5920 /* Mapping was not found. Return NULL. */
5924 /* Return the space chain entry for the subspace with the name NAME or
5925 NULL if no such subspace exists.
5927 Uses a linear search through all the spaces and subspaces, this may
5928 not be appropriate if we ever being placing each function in its
5931 static ssd_chain_struct
*
5932 is_defined_subspace (name
)
5935 sd_chain_struct
*space_chain
;
5936 ssd_chain_struct
*subspace_chain
;
5938 /* Walk through each space. */
5939 for (space_chain
= space_dict_root
;
5941 space_chain
= space_chain
->sd_next
)
5943 /* Walk through each subspace looking for a name which matches. */
5944 for (subspace_chain
= space_chain
->sd_subspaces
;
5946 subspace_chain
= subspace_chain
->ssd_next
)
5947 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5948 return subspace_chain
;
5951 /* Subspace wasn't found. Return NULL. */
5955 /* Find and return the subspace associated with the given seg. If no
5956 mapping from the given seg to a subspace is found, then return NULL.
5958 If we ever put each procedure/function within its own subspace
5959 (to make life easier on the compiler and linker), then this will have
5960 to become more efficient. */
5962 static ssd_chain_struct
*
5963 pa_subsegment_to_subspace (seg
, subseg
)
5967 sd_chain_struct
*space_chain
;
5968 ssd_chain_struct
*subspace_chain
;
5970 /* Walk through each space. */
5971 for (space_chain
= space_dict_root
;
5973 space_chain
= space_chain
->sd_next
)
5975 if (space_chain
->sd_seg
== seg
)
5977 /* Walk through each subspace within each space looking for
5978 the correct mapping. */
5979 for (subspace_chain
= space_chain
->sd_subspaces
;
5981 subspace_chain
= subspace_chain
->ssd_next
)
5982 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5983 return subspace_chain
;
5987 /* No mapping from subsegment to subspace found. Return NULL. */
5991 /* Given a number, try and find a space with the name number.
5993 Return a pointer to a space dictionary chain entry for the space
5994 that was found or NULL on failure. */
5996 static sd_chain_struct
*
5997 pa_find_space_by_number (number
)
6000 sd_chain_struct
*space_chain
;
6002 for (space_chain
= space_dict_root
;
6004 space_chain
= space_chain
->sd_next
)
6006 if (SPACE_SPNUM (space_chain
) == number
)
6010 /* No appropriate space found. Return NULL. */
6014 /* Return the starting address for the given subspace. If the starting
6015 address is unknown then return zero. */
6018 pa_subspace_start (space
, quadrant
)
6019 sd_chain_struct
*space
;
6022 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6023 is not correct for the PA OSF1 port. */
6024 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
6026 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
6032 /* FIXME. Needs documentation. */
6034 pa_next_subseg (space
)
6035 sd_chain_struct
*space
;
6038 space
->sd_last_subseg
++;
6039 return space
->sd_last_subseg
;
6042 /* Helper function for pa_stringer. Used to find the end of
6049 unsigned int c
= *s
& CHAR_MASK
;
6051 /* We must have a valid space and subspace. */
6052 pa_check_current_space_and_subspace ();
6065 /* Handle a .STRING type pseudo-op. */
6068 pa_stringer (append_zero
)
6071 char *s
, num_buf
[4];
6075 /* Preprocess the string to handle PA-specific escape sequences.
6076 For example, \xDD where DD is a hexidecimal number should be
6077 changed to \OOO where OOO is an octal number. */
6079 /* Skip the opening quote. */
6080 s
= input_line_pointer
+ 1;
6082 while (is_a_char (c
= pa_stringer_aux (s
++)))
6089 /* Handle \x<num>. */
6092 unsigned int number
;
6097 /* Get pas the 'x'. */
6099 for (num_digit
= 0, number
= 0, dg
= *s
;
6101 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6102 || (dg
>= 'A' && dg
<= 'F'));
6106 number
= number
* 16 + dg
- '0';
6107 else if (dg
>= 'a' && dg
<= 'f')
6108 number
= number
* 16 + dg
- 'a' + 10;
6110 number
= number
* 16 + dg
- 'A' + 10;
6120 sprintf (num_buf
, "%02o", number
);
6123 sprintf (num_buf
, "%03o", number
);
6126 for (i
= 0; i
<= num_digit
; i
++)
6127 s_start
[i
] = num_buf
[i
];
6131 /* This might be a "\"", skip over the escaped char. */
6138 stringer (append_zero
);
6139 pa_undefine_label ();
6142 /* Handle a .VERSION pseudo-op. */
6149 pa_undefine_label ();
6152 /* Handle a .COPYRIGHT pseudo-op. */
6155 pa_copyright (unused
)
6159 pa_undefine_label ();
6162 /* Just like a normal cons, but when finished we have to undefine
6163 the latest space label. */
6170 pa_undefine_label ();
6173 /* Switch to the data space. As usual delete our label. */
6179 current_space
= is_defined_space ("$PRIVATE$");
6181 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6183 pa_undefine_label ();
6186 /* Like float_cons, but we need to undefine our label. */
6189 pa_float_cons (float_type
)
6192 float_cons (float_type
);
6193 pa_undefine_label ();
6196 /* Like s_fill, but delete our label when finished. */
6202 /* We must have a valid space and subspace. */
6203 pa_check_current_space_and_subspace ();
6206 pa_undefine_label ();
6209 /* Like lcomm, but delete our label when finished. */
6212 pa_lcomm (needs_align
)
6215 /* We must have a valid space and subspace. */
6216 pa_check_current_space_and_subspace ();
6218 s_lcomm (needs_align
);
6219 pa_undefine_label ();
6222 /* Like lsym, but delete our label when finished. */
6228 /* We must have a valid space and subspace. */
6229 pa_check_current_space_and_subspace ();
6232 pa_undefine_label ();
6235 /* Switch to the text space. Like s_text, but delete our
6236 label when finished. */
6241 current_space
= is_defined_space ("$TEXT$");
6243 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6246 pa_undefine_label ();
6249 /* On the PA relocations which involve function symbols must not be
6250 adjusted. This so that the linker can know when/how to create argument
6251 relocation stubs for indirect calls and calls to static functions.
6253 "T" field selectors create DLT relative fixups for accessing
6254 globals and statics in PIC code; each DLT relative fixup creates
6255 an entry in the DLT table. The entries contain the address of
6256 the final target (eg accessing "foo" would create a DLT entry
6257 with the address of "foo").
6259 Unfortunately, the HP linker doesn't take into account any addend
6260 when generating the DLT; so accessing $LIT$+8 puts the address of
6261 $LIT$ into the DLT rather than the address of $LIT$+8.
6263 The end result is we can't perform relocation symbol reductions for
6264 any fixup which creates entries in the DLT (eg they use "T" field
6267 Reject reductions involving symbols with external scope; such
6268 reductions make life a living hell for object file editors.
6270 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6271 the code space. The SOM BFD backend doesn't know how to pull the
6272 right bits out of an instruction. */
6275 hppa_fix_adjustable (fixp
)
6278 struct hppa_fix_struct
*hppa_fix
;
6280 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6283 /* Reject reductions of symbols in 32bit relocs. */
6284 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6287 /* Reject reductions of symbols in sym1-sym2 expressions when
6288 the fixup will occur in a CODE subspace.
6290 XXX FIXME: Long term we probably want to reject all of these;
6291 for example reducing in the debug section would lose if we ever
6292 supported using the optimizing hp linker. */
6295 && (hppa_fix
->segment
->flags
& SEC_CODE
))
6297 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
6298 fixp
->fx_subsy
->sy_used_in_reloc
= 1;
6302 /* We can't adjust DP relative relocs that use LR% and RR% field
6303 selectors. That confuses the optimization pass in HP linker. */
6304 if (fixp
->fx_r_type
== R_DP_RELATIVE
6305 && (hppa_fix
->fx_r_field
== e_lrsel
6306 || hppa_fix
->fx_r_field
== e_rrsel
6307 || hppa_fix
->fx_r_field
== e_nlrsel
))
6311 /* Reject reductions of symbols in DLT relative relocs,
6312 relocations with plabels. */
6313 if (hppa_fix
->fx_r_field
== e_tsel
6314 || hppa_fix
->fx_r_field
== e_ltsel
6315 || hppa_fix
->fx_r_field
== e_rtsel
6316 || hppa_fix
->fx_r_field
== e_psel
6317 || hppa_fix
->fx_r_field
== e_rpsel
6318 || hppa_fix
->fx_r_field
== e_lpsel
)
6321 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6324 /* Reject reductions of function symbols. */
6325 if (fixp
->fx_addsy
== 0
6326 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6332 /* Return nonzero if the fixup in FIXP will require a relocation,
6333 even it if appears that the fixup could be completely handled
6337 hppa_force_relocation (fixp
)
6340 struct hppa_fix_struct
*hppa_fixp
;
6343 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6345 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
6346 || fixp
->fx_r_type
== R_HPPA_BEGIN_BRTAB
6347 || fixp
->fx_r_type
== R_HPPA_END_BRTAB
6348 || (fixp
->fx_addsy
!= NULL
&& fixp
->fx_subsy
!= NULL
6349 && (hppa_fixp
->segment
->flags
& SEC_CODE
) != 0))
6353 #define arg_reloc_stub_needed(CALLER, CALLEE) \
6354 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6356 /* It is necessary to force PC-relative calls/jumps to have a relocation
6357 entry if they're going to need either a argument relocation or long
6358 call stub. FIXME. Can't we need the same for absolute calls? */
6359 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6360 && (arg_reloc_stub_needed (((obj_symbol_type
*)
6361 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6363 hppa_fixp
->fx_arg_reloc
)))
6365 distance
= (fixp
->fx_offset
+ S_GET_VALUE (fixp
->fx_addsy
)
6366 - md_pcrel_from (fixp
));
6367 /* Now check and see if we're going to need a long-branch stub. */
6368 if (fixp
->fx_r_type
== R_HPPA_PCREL_CALL
6369 && (distance
> 262143 || distance
< -262144))
6372 #undef arg_reloc_stub_needed
6374 /* No need (yet) to force another relocations to be emitted. */
6378 /* Now for some ELF specific code. FIXME. */
6380 /* Mark the end of a function so that it's possible to compute
6381 the size of the function in hppa_elf_final_processing. */
6384 hppa_elf_mark_end_of_function ()
6386 /* ELF does not have EXIT relocations. All we do is create a
6387 temporary symbol marking the end of the function. */
6388 char *name
= (char *)
6389 xmalloc (strlen ("L$\001end_") +
6390 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6396 strcpy (name
, "L$\001end_");
6397 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6399 /* If we have a .exit followed by a .procend, then the
6400 symbol will have already been defined. */
6401 symbolP
= symbol_find (name
);
6404 /* The symbol has already been defined! This can
6405 happen if we have a .exit followed by a .procend.
6407 This is *not* an error. All we want to do is free
6408 the memory we just allocated for the name and continue. */
6413 /* symbol value should be the offset of the
6414 last instruction of the function */
6415 symbolP
= symbol_new (name
, now_seg
, (valueT
) (frag_now_fix () - 4),
6419 symbolP
->bsym
->flags
= BSF_LOCAL
;
6420 symbol_table_insert (symbolP
);
6424 last_call_info
->end_symbol
= symbolP
;
6426 as_bad ("Symbol '%s' could not be created.", name
);
6430 as_bad ("No memory for symbol name.");
6434 /* For ELF, this function serves one purpose: to setup the st_size
6435 field of STT_FUNC symbols. To do this, we need to scan the
6436 call_info structure list, determining st_size in by taking the
6437 difference in the address of the beginning/end marker symbols. */
6440 elf_hppa_final_processing ()
6442 struct call_info
*call_info_pointer
;
6444 for (call_info_pointer
= call_info_root
;
6446 call_info_pointer
= call_info_pointer
->ci_next
)
6448 elf_symbol_type
*esym
6449 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6450 esym
->internal_elf_sym
.st_size
=
6451 S_GET_VALUE (call_info_pointer
->end_symbol
)
6452 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;