1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "../bfd/libhppa.h"
31 #include "../bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".PARISC.unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type
;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type
;
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_89_fp_reg_struct'. */
241 struct pa_89_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 fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
455 static void pa_cons
PARAMS ((int));
456 static void pa_data
PARAMS ((int));
457 static void pa_float_cons
PARAMS ((int));
458 static void pa_fill
PARAMS ((int));
459 static void pa_lcomm
PARAMS ((int));
460 static void pa_lsym
PARAMS ((int));
461 static void pa_stringer
PARAMS ((int));
462 static void pa_text
PARAMS ((int));
463 static void pa_version
PARAMS ((int));
464 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
465 static int get_expression
PARAMS ((char *));
466 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
467 static int evaluate_absolute
PARAMS ((struct pa_it
*));
468 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
469 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
470 static int pa_parse_nullif
PARAMS ((char **));
471 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
472 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
473 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
475 static void pa_align
PARAMS ((int));
476 static void pa_block
PARAMS ((int));
477 static void pa_call
PARAMS ((int));
478 static void pa_call_args
PARAMS ((struct call_desc
*));
479 static void pa_callinfo
PARAMS ((int));
480 static void pa_code
PARAMS ((int));
481 static void pa_comm
PARAMS ((int));
482 static void pa_copyright
PARAMS ((int));
483 static void pa_end
PARAMS ((int));
484 static void pa_enter
PARAMS ((int));
485 static void pa_entry
PARAMS ((int));
486 static void pa_equ
PARAMS ((int));
487 static void pa_exit
PARAMS ((int));
488 static void pa_export
PARAMS ((int));
489 static void pa_type_args
PARAMS ((symbolS
*, int));
490 static void pa_import
PARAMS ((int));
491 static void pa_label
PARAMS ((int));
492 static void pa_leave
PARAMS ((int));
493 static void pa_origin
PARAMS ((int));
494 static void pa_proc
PARAMS ((int));
495 static void pa_procend
PARAMS ((int));
496 static void pa_space
PARAMS ((int));
497 static void pa_spnum
PARAMS ((int));
498 static void pa_subspace
PARAMS ((int));
499 static void pa_param
PARAMS ((int));
500 static void pa_undefine_label
PARAMS ((void));
501 static int need_89_opcode
PARAMS ((struct pa_it
*,
502 struct pa_89_fp_reg_struct
*));
503 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
504 static label_symbol_struct
*pa_get_label
PARAMS ((void));
505 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, int,
508 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
513 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
514 char *, int, int, int,
518 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
519 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
520 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
521 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
523 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
524 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
525 static void pa_ip
PARAMS ((char *));
526 static void fix_new_hppa
PARAMS ((fragS
*, int, int, symbolS
*,
527 long, expressionS
*, int,
528 bfd_reloc_code_real_type
,
529 enum hppa_reloc_field_selector_type
,
531 static int is_end_of_statement
PARAMS ((void));
532 static int reg_name_search
PARAMS ((char *));
533 static int pa_chk_field_selector
PARAMS ((char **));
534 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
535 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
536 static void process_exit
PARAMS ((void));
537 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
538 static int log2
PARAMS ((int));
539 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
540 static unsigned int pa_stringer_aux
PARAMS ((char *));
541 static void pa_spaces_begin
PARAMS ((void));
542 static void hppa_elf_mark_end_of_function
PARAMS ((void));
544 /* File and gloally scoped variable declarations. */
546 /* Root and final entry in the space chain. */
547 static sd_chain_struct
*space_dict_root
;
548 static sd_chain_struct
*space_dict_last
;
550 /* The current space and subspace. */
551 static sd_chain_struct
*current_space
;
552 static ssd_chain_struct
*current_subspace
;
554 /* Root of the call_info chain. */
555 static struct call_info
*call_info_root
;
557 /* The last call_info (for functions) structure
558 seen so it can be associated with fixups and
560 static struct call_info
*last_call_info
;
562 /* The last call description (for actual calls). */
563 static struct call_desc last_call_desc
;
565 /* Relaxation isn't supported for the PA yet. */
566 const relax_typeS md_relax_table
[] =
569 /* Jumps are always the same size -- one instruction. */
570 int md_short_jump_size
= 4;
571 int md_long_jump_size
= 4;
573 /* handle of the OPCODE hash table */
574 static struct hash_control
*op_hash
= NULL
;
576 /* This array holds the chars that always start a comment. If the
577 pre-processor is disabled, these aren't very useful. */
578 const char comment_chars
[] = ";";
580 /* Table of pseudo ops for the PA. FIXME -- how many of these
581 are now redundant with the overall GAS and the object file
583 const pseudo_typeS md_pseudo_table
[] =
585 /* align pseudo-ops on the PA specify the actual alignment requested,
586 not the log2 of the requested alignment. */
587 {"align", pa_align
, 8},
588 {"block", pa_block
, 1},
589 {"blockz", pa_block
, 0},
590 {"byte", pa_cons
, 1},
591 {"call", pa_call
, 0},
592 {"callinfo", pa_callinfo
, 0},
593 {"code", pa_code
, 0},
594 {"comm", pa_comm
, 0},
595 {"copyright", pa_copyright
, 0},
596 {"data", pa_data
, 0},
597 {"double", pa_float_cons
, 'd'},
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 {"octa", pa_cons
, 16},
615 {"org", pa_origin
, 0},
616 {"origin", pa_origin
, 0},
617 {"param", pa_param
, 0},
618 {"proc", pa_proc
, 0},
619 {"procend", pa_procend
, 0},
620 {"quad", pa_cons
, 8},
622 {"short", pa_cons
, 2},
623 {"single", pa_float_cons
, 'f'},
624 {"space", pa_space
, 0},
625 {"spnum", pa_spnum
, 0},
626 {"string", pa_stringer
, 0},
627 {"stringz", pa_stringer
, 1},
628 {"subspa", pa_subspace
, 0},
629 {"text", pa_text
, 0},
630 {"version", pa_version
, 0},
631 {"word", pa_cons
, 4},
635 /* This array holds the chars that only start a comment at the beginning of
636 a line. If the line seems to have the form '# 123 filename'
637 .line and .file directives will appear in the pre-processed output.
639 Note that input_file.c hand checks for '#' at the beginning of the
640 first line of the input file. This is because the compiler outputs
641 #NO_APP at the beginning of its output.
643 Also note that '/*' will always start a comment. */
644 const char line_comment_chars
[] = "#";
646 /* This array holds the characters which act as line separators. */
647 const char line_separator_chars
[] = "!";
649 /* Chars that can be used to separate mant from exp in floating point nums. */
650 const char EXP_CHARS
[] = "eE";
652 /* Chars that mean this number is a floating point constant.
653 As in 0f12.456 or 0d1.2345e12.
655 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
656 changed in read.c. Ideally it shouldn't hae to know abou it at
657 all, but nothing is ideal around here. */
658 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
660 static struct pa_it the_insn
;
662 /* Points to the end of an expression just parsed by get_expressoin
663 and friends. FIXME. This shouldn't be handled with a file-global
665 static char *expr_end
;
667 /* Nonzero if a .callinfo appeared within the current procedure. */
668 static int callinfo_found
;
670 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
671 static int within_entry_exit
;
673 /* Nonzero if the assembler is currently within a procedure definition. */
674 static int within_procedure
;
676 /* Handle on strucutre which keep track of the last symbol
677 seen in each subspace. */
678 static label_symbol_struct
*label_symbols_rootp
= NULL
;
680 /* Holds the last field selector. */
681 static int hppa_field_selector
;
683 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
684 static symbolS
*dummy_symbol
;
686 /* Nonzero if errors are to be printed. */
687 static int print_errors
= 1;
689 /* List of registers that are pre-defined:
691 Each general register has one predefined name of the form
692 %r<REGNUM> which has the value <REGNUM>.
694 Space and control registers are handled in a similar manner,
695 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
697 Likewise for the floating point registers, but of the form
698 %fr<REGNUM>. Floating point registers have additional predefined
699 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
700 again have the value <REGNUM>.
702 Many registers also have synonyms:
704 %r26 - %r23 have %arg0 - %arg3 as synonyms
705 %r28 - %r29 have %ret0 - %ret1 as synonyms
706 %r30 has %sp as a synonym
707 %r27 has %dp as a synonym
708 %r2 has %rp as a synonym
710 Almost every control register has a synonym; they are not listed
713 The table is sorted. Suitable for searching by a binary search. */
715 static const struct pd_reg pre_defined_registers
[] =
915 /* This table is sorted by order of the length of the string. This is
916 so we check for <> before we check for <. If we had a <> and checked
917 for < first, we would get a false match. */
918 static const struct fp_cond_map fp_cond_map
[] =
954 static const struct selector_entry selector_table
[] =
973 /* default space and subspace dictionaries */
975 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
976 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
978 /* pre-defined subsegments (subspaces) for the HPPA. */
979 #define SUBSEG_CODE 0
980 #define SUBSEG_DATA 0
983 #define SUBSEG_UNWIND 3
984 #define SUBSEG_GDB_STRINGS 0
985 #define SUBSEG_GDB_SYMBOLS 1
987 static struct default_subspace_dict pa_def_subspaces
[] =
989 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
990 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
991 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
992 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
994 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND
},
996 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
999 static struct default_space_dict pa_def_spaces
[] =
1001 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
1002 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1003 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1006 /* Misc local definitions used by the assembler. */
1008 /* Return nonzero if the string pointed to by S potentially represents
1009 a right or left half of a FP register */
1010 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1011 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1013 /* These macros are used to maintain spaces/subspaces. */
1014 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1015 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1016 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1017 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1019 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1020 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1022 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1023 main loop after insertion. */
1025 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1027 ((OPCODE) |= (FIELD) << (START)); \
1031 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1032 IGNORE is used to suppress the error message. */
1034 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1036 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1039 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1045 #define is_DP_relative(exp) \
1046 ((exp).X_op == O_subtract \
1047 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1049 #define is_PC_relative(exp) \
1050 ((exp).X_op == O_subtract \
1051 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1053 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1054 always be able to reduce the expression to a constant, so we don't
1055 need real complex handling yet. */
1056 #define is_complex(exp) \
1057 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1059 /* Actual functions to implement the PA specific code for the assembler. */
1061 /* Returns a pointer to the label_symbol_struct for the current space.
1062 or NULL if no label_symbol_struct exists for the current space. */
1064 static label_symbol_struct
*
1067 label_symbol_struct
*label_chain
;
1068 sd_chain_struct
*space_chain
= current_space
;
1070 for (label_chain
= label_symbols_rootp
;
1072 label_chain
= label_chain
->lss_next
)
1073 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1079 /* Defines a label for the current space. If one is already defined,
1080 this function will replace it with the new label. */
1083 pa_define_label (symbol
)
1086 label_symbol_struct
*label_chain
= pa_get_label ();
1087 sd_chain_struct
*space_chain
= current_space
;
1090 label_chain
->lss_label
= symbol
;
1093 /* Create a new label entry and add it to the head of the chain. */
1095 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1096 label_chain
->lss_label
= symbol
;
1097 label_chain
->lss_space
= space_chain
;
1098 label_chain
->lss_next
= NULL
;
1100 if (label_symbols_rootp
)
1101 label_chain
->lss_next
= label_symbols_rootp
;
1103 label_symbols_rootp
= label_chain
;
1107 /* Removes a label definition for the current space.
1108 If there is no label_symbol_struct entry, then no action is taken. */
1111 pa_undefine_label ()
1113 label_symbol_struct
*label_chain
;
1114 label_symbol_struct
*prev_label_chain
= NULL
;
1115 sd_chain_struct
*space_chain
= current_space
;
1117 for (label_chain
= label_symbols_rootp
;
1119 label_chain
= label_chain
->lss_next
)
1121 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1123 /* Remove the label from the chain and free its memory. */
1124 if (prev_label_chain
)
1125 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1127 label_symbols_rootp
= label_chain
->lss_next
;
1132 prev_label_chain
= label_chain
;
1137 /* An HPPA-specific version of fix_new. This is required because the HPPA
1138 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1139 results in the creation of an instance of an hppa_fix_struct. An
1140 hppa_fix_struct stores the extra information along with a pointer to the
1141 original fixS. This is attached to the original fixup via the
1142 tc_fix_data field. */
1145 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1146 r_type
, r_field
, r_format
, arg_reloc
, unwind_bits
)
1150 symbolS
*add_symbol
;
1154 bfd_reloc_code_real_type r_type
;
1155 enum hppa_reloc_field_selector_type r_field
;
1162 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1163 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1166 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1168 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1169 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1170 hppa_fix
->fx_r_type
= r_type
;
1171 hppa_fix
->fx_r_field
= r_field
;
1172 hppa_fix
->fx_r_format
= r_format
;
1173 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1174 hppa_fix
->segment
= now_seg
;
1176 if (r_type
== R_ENTRY
|| r_type
== R_EXIT
)
1177 new_fix
->fx_offset
= *unwind_bits
;
1180 /* foo-$global$ is used to access non-automatic storage. $global$
1181 is really just a marker and has served its purpose, so eliminate
1182 it now so as not to confuse write.c. */
1183 if (new_fix
->fx_subsy
1184 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1185 new_fix
->fx_subsy
= NULL
;
1188 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1189 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1192 parse_cons_expression_hppa (exp
)
1195 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1199 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1200 hppa_field_selector is set by the parse_cons_expression_hppa. */
1203 cons_fix_new_hppa (frag
, where
, size
, exp
)
1209 unsigned int rel_type
;
1211 /* Get a base relocation type. */
1212 if (is_DP_relative (*exp
))
1213 rel_type
= R_HPPA_GOTOFF
;
1214 else if (is_complex (*exp
))
1215 rel_type
= R_HPPA_COMPLEX
;
1219 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1220 as_warn ("Invalid field selector. Assuming F%%.");
1222 fix_new_hppa (frag
, where
, size
,
1223 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1224 hppa_field_selector
, 32, 0, NULL
);
1226 /* Reset field selector to its default state. */
1227 hppa_field_selector
= 0;
1230 /* This function is called once, at assembler startup time. It should
1231 set up all the tables, etc. that the MD part of the assembler will need. */
1236 const char *retval
= NULL
;
1240 last_call_info
= NULL
;
1241 call_info_root
= NULL
;
1243 /* Folding of text and data segments fails miserably on the PA.
1244 Warn user and disable "-R" option. */
1245 if (flag_readonly_data_in_text
)
1247 as_warn ("-R option not supported on this target.");
1248 flag_readonly_data_in_text
= 0;
1253 op_hash
= hash_new ();
1255 while (i
< NUMOPCODES
)
1257 const char *name
= pa_opcodes
[i
].name
;
1258 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1259 if (retval
!= NULL
&& *retval
!= '\0')
1261 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1266 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1267 != pa_opcodes
[i
].match
)
1269 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1270 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1275 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1279 as_fatal ("Broken assembler. No assembly attempted.");
1281 /* SOM will change text_section. To make sure we never put
1282 anything into the old one switch to the new one now. */
1283 subseg_set (text_section
, 0);
1285 dummy_symbol
= symbol_find_or_make ("L$dummy");
1286 S_SET_SEGMENT (dummy_symbol
, text_section
);
1289 /* Assemble a single instruction storing it into a frag. */
1296 /* The had better be something to assemble. */
1299 /* If we are within a procedure definition, make sure we've
1300 defined a label for the procedure; handle case where the
1301 label was defined after the .PROC directive.
1303 Note there's not need to diddle with the segment or fragment
1304 for the label symbol in this case. We have already switched
1305 into the new $CODE$ subspace at this point. */
1306 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1308 label_symbol_struct
*label_symbol
= pa_get_label ();
1312 if (label_symbol
->lss_label
)
1314 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1315 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1317 /* Also handle allocation of a fixup to hold the unwind
1318 information when the label appears after the proc/procend. */
1319 if (within_entry_exit
)
1321 char *where
= frag_more (0);
1323 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1324 NULL
, (offsetT
) 0, NULL
,
1325 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1326 (int *)&last_call_info
->ci_unwind
.descriptor
);
1331 as_bad ("Missing function name for .PROC (corrupted label chain)");
1334 as_bad ("Missing function name for .PROC");
1337 /* Assemble the instruction. Results are saved into "the_insn". */
1340 /* Get somewhere to put the assembled instrution. */
1343 /* Output the opcode. */
1344 md_number_to_chars (to
, the_insn
.opcode
, 4);
1346 /* If necessary output more stuff. */
1347 if (the_insn
.reloc
!= R_HPPA_NONE
)
1348 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1349 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1350 the_insn
.reloc
, the_insn
.field_selector
,
1351 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1354 /* Do the real work for assembling a single instruction. Store results
1355 into the global "the_insn" variable. */
1361 char *error_message
= "";
1362 char *s
, c
, *argstart
, *name
, *save_s
;
1366 int cmpltr
, nullif
, flag
, cond
, num
;
1367 unsigned long opcode
;
1368 struct pa_opcode
*insn
;
1370 /* Skip to something interesting. */
1371 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1390 as_fatal ("Unknown opcode: `%s'", str
);
1395 /* Convert everything into lower case. */
1398 if (isupper (*save_s
))
1399 *save_s
= tolower (*save_s
);
1403 /* Look up the opcode in the has table. */
1404 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1406 as_bad ("Unknown opcode: `%s'", str
);
1415 /* Mark the location where arguments for the instruction start, then
1416 start processing them. */
1420 /* Do some initialization. */
1421 opcode
= insn
->match
;
1422 bzero (&the_insn
, sizeof (the_insn
));
1424 the_insn
.reloc
= R_HPPA_NONE
;
1426 /* Build the opcode, checking as we go to make
1427 sure that the operands match. */
1428 for (args
= insn
->args
;; ++args
)
1433 /* End of arguments. */
1449 /* These must match exactly. */
1458 /* Handle a 5 bit register or control register field at 10. */
1461 num
= pa_parse_number (&s
, 0);
1462 CHECK_FIELD (num
, 31, 0, 0);
1463 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1465 /* Handle a 5 bit register field at 15. */
1467 num
= pa_parse_number (&s
, 0);
1468 CHECK_FIELD (num
, 31, 0, 0);
1469 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1471 /* Handle a 5 bit register field at 31. */
1474 num
= pa_parse_number (&s
, 0);
1475 CHECK_FIELD (num
, 31, 0, 0);
1476 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1478 /* Handle a 5 bit field length at 31. */
1480 num
= pa_get_absolute_expression (&the_insn
, &s
);
1482 CHECK_FIELD (num
, 32, 1, 0);
1483 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1485 /* Handle a 5 bit immediate at 15. */
1487 num
= pa_get_absolute_expression (&the_insn
, &s
);
1489 CHECK_FIELD (num
, 15, -16, 0);
1490 low_sign_unext (num
, 5, &num
);
1491 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1493 /* Handle a 5 bit immediate at 31. */
1495 num
= pa_get_absolute_expression (&the_insn
, &s
);
1497 CHECK_FIELD (num
, 15, -16, 0)
1498 low_sign_unext (num
, 5, &num
);
1499 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1501 /* Handle an unsigned 5 bit immediate at 31. */
1503 num
= pa_get_absolute_expression (&the_insn
, &s
);
1505 CHECK_FIELD (num
, 31, 0, 0);
1506 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1508 /* Handle an unsigned 5 bit immediate at 15. */
1510 num
= pa_get_absolute_expression (&the_insn
, &s
);
1512 CHECK_FIELD (num
, 31, 0, 0);
1513 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1515 /* Handle a 2 bit space identifier at 17. */
1517 num
= pa_parse_number (&s
, 0);
1518 CHECK_FIELD (num
, 3, 0, 1);
1519 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1521 /* Handle a 3 bit space identifier at 18. */
1523 num
= pa_parse_number (&s
, 0);
1524 CHECK_FIELD (num
, 7, 0, 1);
1525 dis_assemble_3 (num
, &num
);
1526 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1528 /* Handle a completer for an indexing load or store. */
1534 while (*s
== ',' && i
< 2)
1537 if (strncasecmp (s
, "sm", 2) == 0)
1544 else if (strncasecmp (s
, "m", 1) == 0)
1546 else if (strncasecmp (s
, "s", 1) == 0)
1549 as_bad ("Invalid Indexed Load Completer.");
1554 as_bad ("Invalid Indexed Load Completer Syntax.");
1556 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1559 /* Handle a short load/store completer. */
1567 if (strncasecmp (s
, "ma", 2) == 0)
1572 else if (strncasecmp (s
, "mb", 2) == 0)
1578 as_bad ("Invalid Short Load/Store Completer.");
1582 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1585 /* Handle a stbys completer. */
1591 while (*s
== ',' && i
< 2)
1594 if (strncasecmp (s
, "m", 1) == 0)
1596 else if (strncasecmp (s
, "b", 1) == 0)
1598 else if (strncasecmp (s
, "e", 1) == 0)
1601 as_bad ("Invalid Store Bytes Short Completer");
1606 as_bad ("Invalid Store Bytes Short Completer");
1608 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1611 /* Handle a non-negated compare/stubtract condition. */
1613 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1616 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1619 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1621 /* Handle a negated or non-negated compare/subtract condition. */
1624 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1628 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1631 as_bad ("Invalid Compare/Subtract Condition.");
1636 /* Negated condition requires an opcode change. */
1640 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1642 /* Handle non-negated add condition. */
1644 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1647 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1650 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1652 /* Handle a negated or non-negated add condition. */
1655 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1659 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1662 as_bad ("Invalid Compare/Subtract Condition");
1667 /* Negated condition requires an opcode change. */
1671 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1673 /* Handle a compare/subtract condition. */
1680 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1685 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1688 as_bad ("Invalid Compare/Subtract Condition");
1692 opcode
|= cmpltr
<< 13;
1693 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1695 /* Handle a non-negated add condition. */
1704 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1708 if (strcmp (name
, "=") == 0)
1710 else if (strcmp (name
, "<") == 0)
1712 else if (strcmp (name
, "<=") == 0)
1714 else if (strcasecmp (name
, "nuv") == 0)
1716 else if (strcasecmp (name
, "znv") == 0)
1718 else if (strcasecmp (name
, "sv") == 0)
1720 else if (strcasecmp (name
, "od") == 0)
1722 else if (strcasecmp (name
, "n") == 0)
1724 else if (strcasecmp (name
, "tr") == 0)
1729 else if (strcmp (name
, "<>") == 0)
1734 else if (strcmp (name
, ">=") == 0)
1739 else if (strcmp (name
, ">") == 0)
1744 else if (strcasecmp (name
, "uv") == 0)
1749 else if (strcasecmp (name
, "vnz") == 0)
1754 else if (strcasecmp (name
, "nsv") == 0)
1759 else if (strcasecmp (name
, "ev") == 0)
1765 as_bad ("Invalid Add Condition: %s", name
);
1768 nullif
= pa_parse_nullif (&s
);
1769 opcode
|= nullif
<< 1;
1770 opcode
|= cmpltr
<< 13;
1771 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1773 /* HANDLE a logical instruction condition. */
1781 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1785 if (strcmp (name
, "=") == 0)
1787 else if (strcmp (name
, "<") == 0)
1789 else if (strcmp (name
, "<=") == 0)
1791 else if (strcasecmp (name
, "od") == 0)
1793 else if (strcasecmp (name
, "tr") == 0)
1798 else if (strcmp (name
, "<>") == 0)
1803 else if (strcmp (name
, ">=") == 0)
1808 else if (strcmp (name
, ">") == 0)
1813 else if (strcasecmp (name
, "ev") == 0)
1819 as_bad ("Invalid Logical Instruction Condition.");
1822 opcode
|= cmpltr
<< 13;
1823 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1825 /* Handle a unit instruction condition. */
1832 if (strncasecmp (s
, "sbz", 3) == 0)
1837 else if (strncasecmp (s
, "shz", 3) == 0)
1842 else if (strncasecmp (s
, "sdc", 3) == 0)
1847 else if (strncasecmp (s
, "sbc", 3) == 0)
1852 else if (strncasecmp (s
, "shc", 3) == 0)
1857 else if (strncasecmp (s
, "tr", 2) == 0)
1863 else if (strncasecmp (s
, "nbz", 3) == 0)
1869 else if (strncasecmp (s
, "nhz", 3) == 0)
1875 else if (strncasecmp (s
, "ndc", 3) == 0)
1881 else if (strncasecmp (s
, "nbc", 3) == 0)
1887 else if (strncasecmp (s
, "nhc", 3) == 0)
1894 as_bad ("Invalid Logical Instruction Condition.");
1896 opcode
|= cmpltr
<< 13;
1897 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1899 /* Handle a shift/extract/deposit condition. */
1907 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1911 if (strcmp (name
, "=") == 0)
1913 else if (strcmp (name
, "<") == 0)
1915 else if (strcasecmp (name
, "od") == 0)
1917 else if (strcasecmp (name
, "tr") == 0)
1919 else if (strcmp (name
, "<>") == 0)
1921 else if (strcmp (name
, ">=") == 0)
1923 else if (strcasecmp (name
, "ev") == 0)
1925 /* Handle movb,n. Put things back the way they were.
1926 This includes moving s back to where it started. */
1927 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1934 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1937 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1939 /* Handle bvb and bb conditions. */
1945 if (strncmp (s
, "<", 1) == 0)
1950 else if (strncmp (s
, ">=", 2) == 0)
1956 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1958 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1960 /* Handle a system control completer. */
1962 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
1970 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
1972 /* Handle a nullification completer for branch instructions. */
1974 nullif
= pa_parse_nullif (&s
);
1975 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
1977 /* Handle a nullification completer for copr and spop insns. */
1979 nullif
= pa_parse_nullif (&s
);
1980 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
1982 /* Handle a 11 bit immediate at 31. */
1984 the_insn
.field_selector
= pa_chk_field_selector (&s
);
1987 if (the_insn
.exp
.X_op
== O_constant
)
1989 num
= evaluate_absolute (&the_insn
);
1990 CHECK_FIELD (num
, 1023, -1024, 0);
1991 low_sign_unext (num
, 11, &num
);
1992 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1996 if (is_DP_relative (the_insn
.exp
))
1997 the_insn
.reloc
= R_HPPA_GOTOFF
;
1998 else if (is_PC_relative (the_insn
.exp
))
1999 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2001 the_insn
.reloc
= R_HPPA
;
2002 the_insn
.format
= 11;
2006 /* Handle a 14 bit immediate at 31. */
2008 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2011 if (the_insn
.exp
.X_op
== O_constant
)
2013 num
= evaluate_absolute (&the_insn
);
2014 CHECK_FIELD (num
, 8191, -8192, 0);
2015 low_sign_unext (num
, 14, &num
);
2016 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2020 if (is_DP_relative (the_insn
.exp
))
2021 the_insn
.reloc
= R_HPPA_GOTOFF
;
2022 else if (is_PC_relative (the_insn
.exp
))
2023 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2025 the_insn
.reloc
= R_HPPA
;
2026 the_insn
.format
= 14;
2030 /* Handle a 21 bit immediate at 31. */
2032 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2035 if (the_insn
.exp
.X_op
== O_constant
)
2037 num
= evaluate_absolute (&the_insn
);
2038 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2039 dis_assemble_21 (num
, &num
);
2040 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2044 if (is_DP_relative (the_insn
.exp
))
2045 the_insn
.reloc
= R_HPPA_GOTOFF
;
2046 else if (is_PC_relative (the_insn
.exp
))
2047 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2049 the_insn
.reloc
= R_HPPA
;
2050 the_insn
.format
= 21;
2054 /* Handle a 12 bit branch displacement. */
2056 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2060 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2062 unsigned int w1
, w
, result
;
2064 num
= evaluate_absolute (&the_insn
);
2067 as_bad ("Branch to unaligned address");
2070 CHECK_FIELD (num
, 8191, -8192, 0);
2071 sign_unext ((num
- 8) >> 2, 12, &result
);
2072 dis_assemble_12 (result
, &w1
, &w
);
2073 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2077 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2078 the_insn
.format
= 12;
2079 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2080 bzero (&last_call_desc
, sizeof (struct call_desc
));
2085 /* Handle a 17 bit branch displacement. */
2087 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2091 if (!the_insn
.exp
.X_add_symbol
2092 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2095 unsigned int w2
, w1
, w
, result
;
2097 num
= evaluate_absolute (&the_insn
);
2100 as_bad ("Branch to unaligned address");
2103 CHECK_FIELD (num
, 262143, -262144, 0);
2105 if (the_insn
.exp
.X_add_symbol
)
2108 sign_unext (num
>> 2, 17, &result
);
2109 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2110 INSERT_FIELD_AND_CONTINUE (opcode
,
2111 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2115 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2116 the_insn
.format
= 17;
2117 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2118 bzero (&last_call_desc
, sizeof (struct call_desc
));
2122 /* Handle an absolute 17 bit branch target. */
2124 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2128 if (!the_insn
.exp
.X_add_symbol
2129 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2132 unsigned int w2
, w1
, w
, result
;
2134 num
= evaluate_absolute (&the_insn
);
2137 as_bad ("Branch to unaligned address");
2140 CHECK_FIELD (num
, 262143, -262144, 0);
2142 if (the_insn
.exp
.X_add_symbol
)
2145 sign_unext (num
>> 2, 17, &result
);
2146 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2147 INSERT_FIELD_AND_CONTINUE (opcode
,
2148 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2152 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2153 the_insn
.format
= 17;
2157 /* Handle a 5 bit shift count at 26. */
2159 num
= pa_get_absolute_expression (&the_insn
, &s
);
2161 CHECK_FIELD (num
, 31, 0, 0);
2162 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2164 /* Handle a 5 bit bit position at 26. */
2166 num
= pa_get_absolute_expression (&the_insn
, &s
);
2168 CHECK_FIELD (num
, 31, 0, 0);
2169 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2171 /* Handle a 5 bit immediate at 10. */
2173 num
= pa_get_absolute_expression (&the_insn
, &s
);
2175 CHECK_FIELD (num
, 31, 0, 0);
2176 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2178 /* Handle a 13 bit immediate at 18. */
2180 num
= pa_get_absolute_expression (&the_insn
, &s
);
2182 CHECK_FIELD (num
, 8191, 0, 0);
2183 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2185 /* Handle a 26 bit immediate at 31. */
2187 num
= pa_get_absolute_expression (&the_insn
, &s
);
2189 CHECK_FIELD (num
, 671108864, 0, 0);
2190 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 1);
2192 /* Handle a 3 bit SFU identifier at 25. */
2195 as_bad ("Invalid SFU identifier");
2196 num
= pa_get_absolute_expression (&the_insn
, &s
);
2198 CHECK_FIELD (num
, 7, 0, 0);
2199 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2201 /* Handle a 20 bit SOP field for spop0. */
2203 num
= pa_get_absolute_expression (&the_insn
, &s
);
2205 CHECK_FIELD (num
, 1048575, 0, 0);
2206 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2207 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2209 /* Handle a 15bit SOP field for spop1. */
2211 num
= pa_get_absolute_expression (&the_insn
, &s
);
2213 CHECK_FIELD (num
, 32767, 0, 0);
2214 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2216 /* Handle a 10bit SOP field for spop3. */
2218 num
= pa_get_absolute_expression (&the_insn
, &s
);
2220 CHECK_FIELD (num
, 1023, 0, 0);
2221 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2222 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2224 /* Handle a 15 bit SOP field for spop2. */
2226 num
= pa_get_absolute_expression (&the_insn
, &s
);
2228 CHECK_FIELD (num
, 32767, 0, 0);
2229 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2230 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2232 /* Handle a 3-bit co-processor ID field. */
2235 as_bad ("Invalid COPR identifier");
2236 num
= pa_get_absolute_expression (&the_insn
, &s
);
2238 CHECK_FIELD (num
, 7, 0, 0);
2239 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2241 /* Handle a 22bit SOP field for copr. */
2243 num
= pa_get_absolute_expression (&the_insn
, &s
);
2245 CHECK_FIELD (num
, 4194303, 0, 0);
2246 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2247 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2249 /* Handle a source FP operand format completer. */
2251 flag
= pa_parse_fp_format (&s
);
2252 the_insn
.fpof1
= flag
;
2253 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2255 /* Handle a destination FP operand format completer. */
2257 /* pa_parse_format needs the ',' prefix. */
2259 flag
= pa_parse_fp_format (&s
);
2260 the_insn
.fpof2
= flag
;
2261 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2263 /* Handle FP compare conditions. */
2265 cond
= pa_parse_fp_cmp_cond (&s
);
2266 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2268 /* Handle L/R register halves like 't'. */
2271 struct pa_89_fp_reg_struct result
;
2273 pa_parse_number (&s
, &result
);
2274 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2275 opcode
|= result
.number_part
;
2277 /* 0x30 opcodes are FP arithmetic operation opcodes
2278 and need to be turned into 0x38 opcodes. This
2279 is not necessary for loads/stores. */
2280 if (need_89_opcode (&the_insn
, &result
)
2281 && ((opcode
& 0xfc000000) == 0x30000000))
2284 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2287 /* Handle L/R register halves like 'b'. */
2290 struct pa_89_fp_reg_struct result
;
2292 pa_parse_number (&s
, &result
);
2293 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2294 opcode
|= result
.number_part
<< 21;
2295 if (need_89_opcode (&the_insn
, &result
))
2297 opcode
|= (result
.l_r_select
& 1) << 7;
2303 /* Handle L/R register halves like 'x'. */
2306 struct pa_89_fp_reg_struct result
;
2308 pa_parse_number (&s
, &result
);
2309 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2310 opcode
|= (result
.number_part
& 0x1f) << 16;
2311 if (need_89_opcode (&the_insn
, &result
))
2313 opcode
|= (result
.l_r_select
& 1) << 12;
2319 /* Handle a 5 bit register field at 10. */
2322 struct pa_89_fp_reg_struct result
;
2324 pa_parse_number (&s
, &result
);
2325 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2326 if (the_insn
.fpof1
== SGL
)
2328 result
.number_part
&= 0xF;
2329 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2331 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2334 /* Handle a 5 bit register field at 15. */
2337 struct pa_89_fp_reg_struct result
;
2339 pa_parse_number (&s
, &result
);
2340 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2341 if (the_insn
.fpof1
== SGL
)
2343 result
.number_part
&= 0xF;
2344 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2346 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2349 /* Handle a 5 bit register field at 31. */
2352 struct pa_89_fp_reg_struct result
;
2354 pa_parse_number (&s
, &result
);
2355 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2356 if (the_insn
.fpof1
== SGL
)
2358 result
.number_part
&= 0xF;
2359 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2361 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2364 /* Handle a 5 bit register field at 20. */
2367 struct pa_89_fp_reg_struct result
;
2369 pa_parse_number (&s
, &result
);
2370 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2371 if (the_insn
.fpof1
== SGL
)
2373 result
.number_part
&= 0xF;
2374 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2376 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2379 /* Handle a 5 bit register field at 25. */
2382 struct pa_89_fp_reg_struct result
;
2384 pa_parse_number (&s
, &result
);
2385 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2386 if (the_insn
.fpof1
== SGL
)
2388 result
.number_part
&= 0xF;
2389 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2391 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2394 /* Handle a floating point operand format at 26.
2395 Only allows single and double precision. */
2397 flag
= pa_parse_fp_format (&s
);
2403 the_insn
.fpof1
= flag
;
2409 as_bad ("Invalid Floating Point Operand Format.");
2419 /* Check if the args matched. */
2422 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2423 && !strcmp (insn
->name
, insn
[1].name
))
2431 as_bad ("Invalid operands %s", error_message
);
2438 the_insn
.opcode
= opcode
;
2441 /* Turn a string in input_line_pointer into a floating point constant of type
2442 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2443 emitted is stored in *sizeP . An error message or NULL is returned. */
2445 #define MAX_LITTLENUMS 6
2448 md_atof (type
, litP
, sizeP
)
2454 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2455 LITTLENUM_TYPE
*wordP
;
2487 return "Bad call to MD_ATOF()";
2489 t
= atof_ieee (input_line_pointer
, type
, words
);
2491 input_line_pointer
= t
;
2492 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2493 for (wordP
= words
; prec
--;)
2495 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2496 litP
+= sizeof (LITTLENUM_TYPE
);
2501 /* Write out big-endian. */
2504 md_number_to_chars (buf
, val
, n
)
2509 number_to_chars_bigendian (buf
, val
, n
);
2512 /* Translate internal representation of relocation info to BFD target
2516 tc_gen_reloc (section
, fixp
)
2521 struct hppa_fix_struct
*hppa_fixp
;
2522 bfd_reloc_code_real_type code
;
2523 static arelent
*no_relocs
= NULL
;
2525 bfd_reloc_code_real_type
**codes
;
2529 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2530 if (fixp
->fx_addsy
== 0)
2532 assert (hppa_fixp
!= 0);
2533 assert (section
!= 0);
2535 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2536 assert (reloc
!= 0);
2538 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2539 codes
= (bfd_reloc_code_real_type
**) hppa_gen_reloc_type (stdoutput
,
2541 hppa_fixp
->fx_r_format
,
2542 hppa_fixp
->fx_r_field
);
2544 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2547 relocs
= (arelent
**)
2548 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2549 assert (relocs
!= 0);
2551 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2552 sizeof (arelent
) * n_relocs
);
2554 assert (reloc
!= 0);
2556 for (i
= 0; i
< n_relocs
; i
++)
2557 relocs
[i
] = &reloc
[i
];
2559 relocs
[n_relocs
] = NULL
;
2562 switch (fixp
->fx_r_type
)
2565 assert (n_relocs
== 1);
2569 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2570 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2571 /* Ugh. Yet another case where the generic ELF code's
2572 handling of section vmas makes life a living hell.
2574 The generic ELF code will subtract out section->vma from
2575 the relocation offset before the relocs are written. So
2576 we have to add section->vma into the offset here so the
2578 reloc
->address
= (fixp
->fx_frag
->fr_address
+ fixp
->fx_where
2580 reloc
->addend
= 0; /* default */
2582 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2584 /* Now, do any processing that is dependent on the relocation type. */
2587 case R_PARISC_DLTREL21L
:
2588 case R_PARISC_DLTREL14R
:
2589 case R_PARISC_DLTREL14F
:
2590 case R_PARISC_PLABEL32
:
2591 case R_PARISC_PLABEL21L
:
2592 case R_PARISC_PLABEL14R
:
2593 /* For plabel relocations, the addend of the
2594 relocation should be either 0 (no static link) or 2
2595 (static link required).
2597 FIXME: We always assume no static link!
2599 We also slam a zero addend into the DLT relative relocs;
2600 it doesn't make a lot of sense to use any addend since
2601 it gets you a different (eg unknown) DLT entry. */
2605 case R_PARISC_PCREL21L
:
2606 case R_PARISC_PCREL17R
:
2607 case R_PARISC_PCREL17F
:
2608 case R_PARISC_PCREL17C
:
2609 case R_PARISC_PCREL14R
:
2610 case R_PARISC_PCREL14F
:
2611 /* The constant is stored in the instruction. */
2612 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2615 reloc
->addend
= fixp
->fx_offset
;
2622 /* Walk over reach relocation returned by the BFD backend. */
2623 for (i
= 0; i
< n_relocs
; i
++)
2627 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2628 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2629 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2635 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2641 /* For plabel relocations, the addend of the
2642 relocation should be either 0 (no static link) or 2
2643 (static link required).
2645 FIXME: We always assume no static link!
2647 We also slam a zero addend into the DLT relative relocs;
2648 it doesn't make a lot of sense to use any addend since
2649 it gets you a different (eg unknown) DLT entry. */
2650 relocs
[i
]->addend
= 0;
2660 /* There is no symbol or addend associated with these fixups. */
2661 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2662 relocs
[i
]->addend
= 0;
2667 /* There is no symbol associated with these fixups. */
2668 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2669 relocs
[i
]->addend
= fixp
->fx_offset
;
2673 relocs
[i
]->addend
= fixp
->fx_offset
;
2681 /* Process any machine dependent frag types. */
2684 md_convert_frag (abfd
, sec
, fragP
)
2686 register asection
*sec
;
2687 register fragS
*fragP
;
2689 unsigned int address
;
2691 if (fragP
->fr_type
== rs_machine_dependent
)
2693 switch ((int) fragP
->fr_subtype
)
2696 fragP
->fr_type
= rs_fill
;
2697 know (fragP
->fr_var
== 1);
2698 know (fragP
->fr_next
);
2699 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2700 if (address
% fragP
->fr_offset
)
2703 fragP
->fr_next
->fr_address
2708 fragP
->fr_offset
= 0;
2714 /* Round up a section size to the appropriate boundary. */
2717 md_section_align (segment
, size
)
2721 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2722 int align2
= (1 << align
) - 1;
2724 return (size
+ align2
) & ~align2
;
2727 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2729 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2731 addressT from_addr
, to_addr
;
2735 fprintf (stderr
, "pa_create_short_jmp\n");
2739 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2741 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2743 addressT from_addr
, to_addr
;
2747 fprintf (stderr
, "pa_create_long_jump\n");
2751 /* Return the approximate size of a frag before relaxation has occurred. */
2753 md_estimate_size_before_relax (fragP
, segment
)
2754 register fragS
*fragP
;
2761 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2767 CONST
char *md_shortopts
= "";
2768 struct option md_longopts
[] = {
2769 {NULL
, no_argument
, NULL
, 0}
2771 size_t md_longopts_size
= sizeof(md_longopts
);
2774 md_parse_option (c
, arg
)
2782 md_show_usage (stream
)
2787 /* We have no need to default values of symbols. */
2790 md_undefined_symbol (name
)
2796 /* Parse an operand that is machine-specific.
2797 We just return without modifying the expression as we have nothing
2801 md_operand (expressionP
)
2802 expressionS
*expressionP
;
2806 /* Apply a fixup to an instruction. */
2809 md_apply_fix (fixP
, valp
)
2813 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2814 struct hppa_fix_struct
*hppa_fixP
;
2815 long new_val
, result
;
2816 unsigned int w1
, w2
, w
;
2818 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2819 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2820 never be "applied" (they are just markers). */
2822 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2823 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2827 /* There should have been an HPPA specific fixup associated
2828 with the GAS fixup. */
2831 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2832 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2834 /* If there is a symbol associated with this fixup, then it's something
2835 which will need a SOM relocation (except for some PC-relative relocs).
2836 In such cases we should treat the "val" or "addend" as zero since it
2837 will be added in as needed from fx_offset in tc_gen_reloc. */
2838 if (fixP
->fx_addsy
!= NULL
2839 || fixP
->fx_r_type
== R_HPPA_NONE
)
2840 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2842 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2844 /* Handle pc-relative exceptions from above. */
2845 #define stub_needed(CALLER, CALLEE) \
2846 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2847 if ((fmt
== 12 || fmt
== 17)
2850 && !stub_needed (((obj_symbol_type
*)
2851 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2852 hppa_fixP
->fx_arg_reloc
)
2853 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2855 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2857 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2862 /* Handle all opcodes with the 'j' operand type. */
2864 CHECK_FIELD (new_val
, 8191, -8192, 0);
2866 /* Mask off 14 bits to be changed. */
2867 bfd_put_32 (stdoutput
,
2868 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2870 low_sign_unext (new_val
, 14, &result
);
2873 /* Handle all opcodes with the 'k' operand type. */
2875 CHECK_FIELD (new_val
, 2097152, 0, 0);
2877 /* Mask off 21 bits to be changed. */
2878 bfd_put_32 (stdoutput
,
2879 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2881 dis_assemble_21 (new_val
, &result
);
2884 /* Handle all the opcodes with the 'i' operand type. */
2886 CHECK_FIELD (new_val
, 1023, -1023, 0);
2888 /* Mask off 11 bits to be changed. */
2889 bfd_put_32 (stdoutput
,
2890 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2892 low_sign_unext (new_val
, 11, &result
);
2895 /* Handle all the opcodes with the 'w' operand type. */
2897 CHECK_FIELD (new_val
, 8191, -8192, 0)
2899 /* Mask off 11 bits to be changed. */
2900 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2901 bfd_put_32 (stdoutput
,
2902 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2905 dis_assemble_12 (result
, &w1
, &w
);
2906 result
= ((w1
<< 2) | w
);
2909 /* Handle some of the opcodes with the 'W' operand type. */
2911 CHECK_FIELD (new_val
, 262143, -262144, 0);
2913 /* Mask off 17 bits to be changed. */
2914 bfd_put_32 (stdoutput
,
2915 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
2917 sign_unext ((new_val
- 8) >> 2, 17, &result
);
2918 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2919 result
= ((w2
<< 2) | (w1
<< 16) | w
);
2924 bfd_put_32 (stdoutput
, new_val
, buf
);
2928 as_bad ("Unknown relocation encountered in md_apply_fix.");
2932 /* Insert the relocation. */
2933 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
2938 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
2939 (unsigned int) fixP
, fixP
->fx_r_type
);
2944 /* Exactly what point is a PC-relative offset relative TO?
2945 On the PA, they're relative to the address of the offset. */
2948 md_pcrel_from (fixP
)
2951 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
2954 /* Return nonzero if the input line pointer is at the end of
2958 is_end_of_statement ()
2960 return ((*input_line_pointer
== '\n')
2961 || (*input_line_pointer
== ';')
2962 || (*input_line_pointer
== '!'));
2965 /* Read a number from S. The number might come in one of many forms,
2966 the most common will be a hex or decimal constant, but it could be
2967 a pre-defined register (Yuk!), or an absolute symbol.
2969 Return a number or -1 for failure.
2971 When parsing PA-89 FP register numbers RESULT will be
2972 the address of a structure to return information about
2973 L/R half of FP registers, store results there as appropriate.
2975 pa_parse_number can not handle negative constants and will fail
2976 horribly if it is passed such a constant. */
2979 pa_parse_number (s
, result
)
2981 struct pa_89_fp_reg_struct
*result
;
2990 /* Skip whitespace before the number. */
2991 while (*p
== ' ' || *p
== '\t')
2994 /* Store info in RESULT if requested by caller. */
2997 result
->number_part
= -1;
2998 result
->l_r_select
= -1;
3004 /* Looks like a number. */
3007 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3009 /* The number is specified in hex. */
3011 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3012 || ((*p
>= 'A') && (*p
<= 'F')))
3015 num
= num
* 16 + *p
- '0';
3016 else if (*p
>= 'a' && *p
<= 'f')
3017 num
= num
* 16 + *p
- 'a' + 10;
3019 num
= num
* 16 + *p
- 'A' + 10;
3025 /* The number is specified in decimal. */
3026 while (isdigit (*p
))
3028 num
= num
* 10 + *p
- '0';
3033 /* Store info in RESULT if requested by the caller. */
3036 result
->number_part
= num
;
3038 if (IS_R_SELECT (p
))
3040 result
->l_r_select
= 1;
3043 else if (IS_L_SELECT (p
))
3045 result
->l_r_select
= 0;
3049 result
->l_r_select
= 0;
3054 /* The number might be a predefined register. */
3059 /* Tege hack: Special case for general registers as the general
3060 code makes a binary search with case translation, and is VERY
3065 if (*p
== 'e' && *(p
+ 1) == 't'
3066 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3069 num
= *p
- '0' + 28;
3077 else if (!isdigit (*p
))
3080 as_bad ("Undefined register: '%s'.", name
);
3086 num
= num
* 10 + *p
++ - '0';
3087 while (isdigit (*p
));
3092 /* Do a normal register search. */
3093 while (is_part_of_name (c
))
3099 status
= reg_name_search (name
);
3105 as_bad ("Undefined register: '%s'.", name
);
3111 /* Store info in RESULT if requested by caller. */
3114 result
->number_part
= num
;
3115 if (IS_R_SELECT (p
- 1))
3116 result
->l_r_select
= 1;
3117 else if (IS_L_SELECT (p
- 1))
3118 result
->l_r_select
= 0;
3120 result
->l_r_select
= 0;
3125 /* And finally, it could be a symbol in the absolute section which
3126 is effectively a constant. */
3130 while (is_part_of_name (c
))
3136 if ((sym
= symbol_find (name
)) != NULL
)
3138 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3139 num
= S_GET_VALUE (sym
);
3143 as_bad ("Non-absolute symbol: '%s'.", name
);
3149 /* There is where we'd come for an undefined symbol
3150 or for an empty string. For an empty string we
3151 will return zero. That's a concession made for
3152 compatability with the braindamaged HP assemblers. */
3158 as_bad ("Undefined absolute constant: '%s'.", name
);
3164 /* Store info in RESULT if requested by caller. */
3167 result
->number_part
= num
;
3168 if (IS_R_SELECT (p
- 1))
3169 result
->l_r_select
= 1;
3170 else if (IS_L_SELECT (p
- 1))
3171 result
->l_r_select
= 0;
3173 result
->l_r_select
= 0;
3181 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3183 /* Given NAME, find the register number associated with that name, return
3184 the integer value associated with the given name or -1 on failure. */
3187 reg_name_search (name
)
3190 int middle
, low
, high
;
3194 high
= REG_NAME_CNT
- 1;
3198 middle
= (low
+ high
) / 2;
3199 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3205 return pre_defined_registers
[middle
].value
;
3207 while (low
<= high
);
3213 /* Return nonzero if the given INSN and L/R information will require
3214 a new PA-89 opcode. */
3217 need_89_opcode (insn
, result
)
3219 struct pa_89_fp_reg_struct
*result
;
3221 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3227 /* Parse a condition for a fcmp instruction. Return the numerical
3228 code associated with the condition. */
3231 pa_parse_fp_cmp_cond (s
)
3238 for (i
= 0; i
< 32; i
++)
3240 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3241 strlen (fp_cond_map
[i
].string
)) == 0)
3243 cond
= fp_cond_map
[i
].cond
;
3244 *s
+= strlen (fp_cond_map
[i
].string
);
3245 /* If not a complete match, back up the input string and
3247 if (**s
!= ' ' && **s
!= '\t')
3249 *s
-= strlen (fp_cond_map
[i
].string
);
3252 while (**s
== ' ' || **s
== '\t')
3258 as_bad ("Invalid FP Compare Condition: %s", *s
);
3260 /* Advance over the bogus completer. */
3261 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3267 /* Parse an FP operand format completer returning the completer
3270 static fp_operand_format
3271 pa_parse_fp_format (s
)
3280 if (strncasecmp (*s
, "sgl", 3) == 0)
3285 else if (strncasecmp (*s
, "dbl", 3) == 0)
3290 else if (strncasecmp (*s
, "quad", 4) == 0)
3297 format
= ILLEGAL_FMT
;
3298 as_bad ("Invalid FP Operand Format: %3s", *s
);
3305 /* Convert from a selector string into a selector type. */
3308 pa_chk_field_selector (str
)
3311 int middle
, low
, high
;
3315 /* Read past any whitespace. */
3316 /* FIXME: should we read past newlines and formfeeds??? */
3317 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3320 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3321 name
[0] = tolower ((*str
)[0]),
3323 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3324 name
[0] = tolower ((*str
)[0]),
3325 name
[1] = tolower ((*str
)[1]),
3331 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3335 middle
= (low
+ high
) / 2;
3336 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3343 *str
+= strlen (name
) + 1;
3344 return selector_table
[middle
].field_selector
;
3347 while (low
<= high
);
3352 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3355 get_expression (str
)
3361 save_in
= input_line_pointer
;
3362 input_line_pointer
= str
;
3363 seg
= expression (&the_insn
.exp
);
3364 if (!(seg
== absolute_section
3365 || seg
== undefined_section
3366 || SEG_NORMAL (seg
)))
3368 as_warn ("Bad segment in expression.");
3369 expr_end
= input_line_pointer
;
3370 input_line_pointer
= save_in
;
3373 expr_end
= input_line_pointer
;
3374 input_line_pointer
= save_in
;
3378 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3380 pa_get_absolute_expression (insn
, strp
)
3386 insn
->field_selector
= pa_chk_field_selector (strp
);
3387 save_in
= input_line_pointer
;
3388 input_line_pointer
= *strp
;
3389 expression (&insn
->exp
);
3390 if (insn
->exp
.X_op
!= O_constant
)
3392 as_bad ("Bad segment (should be absolute).");
3393 expr_end
= input_line_pointer
;
3394 input_line_pointer
= save_in
;
3397 expr_end
= input_line_pointer
;
3398 input_line_pointer
= save_in
;
3399 return evaluate_absolute (insn
);
3402 /* Evaluate an absolute expression EXP which may be modified by
3403 the selector FIELD_SELECTOR. Return the value of the expression. */
3405 evaluate_absolute (insn
)
3410 int field_selector
= insn
->field_selector
;
3413 value
= exp
.X_add_number
;
3415 switch (field_selector
)
3421 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3423 if (value
& 0x00000400)
3425 value
= (value
& 0xfffff800) >> 11;
3428 /* Sign extend from bit 21. */
3430 if (value
& 0x00000400)
3431 value
|= 0xfffff800;
3436 /* Arithmetic shift right 11 bits. */
3438 value
= (value
& 0xfffff800) >> 11;
3441 /* Set bits 0-20 to zero. */
3443 value
= value
& 0x7ff;
3446 /* Add 0x800 and arithmetic shift right 11 bits. */
3449 value
= (value
& 0xfffff800) >> 11;
3452 /* Set bitgs 0-21 to one. */
3454 value
|= 0xfffff800;
3457 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3459 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3463 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3468 BAD_CASE (field_selector
);
3474 /* Given an argument location specification return the associated
3475 argument location number. */
3478 pa_build_arg_reloc (type_name
)
3482 if (strncasecmp (type_name
, "no", 2) == 0)
3484 if (strncasecmp (type_name
, "gr", 2) == 0)
3486 else if (strncasecmp (type_name
, "fr", 2) == 0)
3488 else if (strncasecmp (type_name
, "fu", 2) == 0)
3491 as_bad ("Invalid argument location: %s\n", type_name
);
3496 /* Encode and return an argument relocation specification for
3497 the given register in the location specified by arg_reloc. */
3500 pa_align_arg_reloc (reg
, arg_reloc
)
3502 unsigned int arg_reloc
;
3504 unsigned int new_reloc
;
3506 new_reloc
= arg_reloc
;
3522 as_bad ("Invalid argument description: %d", reg
);
3528 /* Parse a PA nullification completer (,n). Return nonzero if the
3529 completer was found; return zero if no completer was found. */
3541 if (strncasecmp (*s
, "n", 1) == 0)
3545 as_bad ("Invalid Nullification: (%c)", **s
);
3554 /* Parse a non-negated compare/subtract completer returning the
3555 number (for encoding in instrutions) of the given completer.
3557 ISBRANCH specifies whether or not this is parsing a condition
3558 completer for a branch (vs a nullification completer for a
3559 computational instruction. */
3562 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3567 char *name
= *s
+ 1;
3575 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3579 if (strcmp (name
, "=") == 0)
3583 else if (strcmp (name
, "<") == 0)
3587 else if (strcmp (name
, "<=") == 0)
3591 else if (strcmp (name
, "<<") == 0)
3595 else if (strcmp (name
, "<<=") == 0)
3599 else if (strcasecmp (name
, "sv") == 0)
3603 else if (strcasecmp (name
, "od") == 0)
3607 /* If we have something like addb,n then there is no condition
3609 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3620 /* Reset pointers if this was really a ,n for a branch instruction. */
3621 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3627 /* Parse a negated compare/subtract completer returning the
3628 number (for encoding in instrutions) of the given completer.
3630 ISBRANCH specifies whether or not this is parsing a condition
3631 completer for a branch (vs a nullification completer for a
3632 computational instruction. */
3635 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3640 char *name
= *s
+ 1;
3648 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3652 if (strcasecmp (name
, "tr") == 0)
3656 else if (strcmp (name
, "<>") == 0)
3660 else if (strcmp (name
, ">=") == 0)
3664 else if (strcmp (name
, ">") == 0)
3668 else if (strcmp (name
, ">>=") == 0)
3672 else if (strcmp (name
, ">>") == 0)
3676 else if (strcasecmp (name
, "nsv") == 0)
3680 else if (strcasecmp (name
, "ev") == 0)
3684 /* If we have something like addb,n then there is no condition
3686 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3697 /* Reset pointers if this was really a ,n for a branch instruction. */
3698 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3704 /* Parse a non-negated addition completer returning the number
3705 (for encoding in instrutions) of the given completer.
3707 ISBRANCH specifies whether or not this is parsing a condition
3708 completer for a branch (vs a nullification completer for a
3709 computational instruction. */
3712 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3717 char *name
= *s
+ 1;
3725 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3729 if (strcmp (name
, "=") == 0)
3733 else if (strcmp (name
, "<") == 0)
3737 else if (strcmp (name
, "<=") == 0)
3741 else if (strcasecmp (name
, "nuv") == 0)
3745 else if (strcasecmp (name
, "znv") == 0)
3749 else if (strcasecmp (name
, "sv") == 0)
3753 else if (strcasecmp (name
, "od") == 0)
3757 /* If we have something like addb,n then there is no condition
3759 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3770 /* Reset pointers if this was really a ,n for a branch instruction. */
3771 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3777 /* Parse a negated addition completer returning the number
3778 (for encoding in instrutions) of the given completer.
3780 ISBRANCH specifies whether or not this is parsing a condition
3781 completer for a branch (vs a nullification completer for a
3782 computational instruction. */
3785 pa_parse_neg_add_cmpltr (s
, isbranch
)
3790 char *name
= *s
+ 1;
3798 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3802 if (strcasecmp (name
, "tr") == 0)
3806 else if (strcmp (name
, "<>") == 0)
3810 else if (strcmp (name
, ">=") == 0)
3814 else if (strcmp (name
, ">") == 0)
3818 else if (strcasecmp (name
, "uv") == 0)
3822 else if (strcasecmp (name
, "vnz") == 0)
3826 else if (strcasecmp (name
, "nsv") == 0)
3830 else if (strcasecmp (name
, "ev") == 0)
3834 /* If we have something like addb,n then there is no condition
3836 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3847 /* Reset pointers if this was really a ,n for a branch instruction. */
3848 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3854 /* Handle an alignment directive. Special so that we can update the
3855 alignment of the subspace if necessary. */
3859 /* Let the generic gas code do most of the work. */
3860 s_align_bytes (bytes
);
3862 /* If bytes is a power of 2, then update the current subspace's
3863 alignment if necessary. */
3864 if (log2 (bytes
) != -1)
3865 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
3868 /* Handle a .BLOCK type pseudo-op. */
3876 unsigned int temp_size
;
3879 temp_size
= get_absolute_expression ();
3881 /* Always fill with zeros, that's what the HP assembler does. */
3884 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3885 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3886 bzero (p
, temp_size
);
3888 /* Convert 2 bytes at a time. */
3890 for (i
= 0; i
< temp_size
; i
+= 2)
3892 md_number_to_chars (p
+ i
,
3894 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3897 pa_undefine_label ();
3898 demand_empty_rest_of_line ();
3901 /* Handle a .CALL pseudo-op. This involves storing away information
3902 about where arguments are to be found so the linker can detect
3903 (and correct) argument location mismatches between caller and callee. */
3909 pa_call_args (&last_call_desc
);
3910 demand_empty_rest_of_line ();
3913 /* Do the dirty work of building a call descriptor which describes
3914 where the caller placed arguments to a function call. */
3917 pa_call_args (call_desc
)
3918 struct call_desc
*call_desc
;
3921 unsigned int temp
, arg_reloc
;
3923 while (!is_end_of_statement ())
3925 name
= input_line_pointer
;
3926 c
= get_symbol_end ();
3927 /* Process a source argument. */
3928 if ((strncasecmp (name
, "argw", 4) == 0))
3930 temp
= atoi (name
+ 4);
3931 p
= input_line_pointer
;
3933 input_line_pointer
++;
3934 name
= input_line_pointer
;
3935 c
= get_symbol_end ();
3936 arg_reloc
= pa_build_arg_reloc (name
);
3937 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
3939 /* Process a return value. */
3940 else if ((strncasecmp (name
, "rtnval", 6) == 0))
3942 p
= input_line_pointer
;
3944 input_line_pointer
++;
3945 name
= input_line_pointer
;
3946 c
= get_symbol_end ();
3947 arg_reloc
= pa_build_arg_reloc (name
);
3948 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
3952 as_bad ("Invalid .CALL argument: %s", name
);
3954 p
= input_line_pointer
;
3956 if (!is_end_of_statement ())
3957 input_line_pointer
++;
3961 /* Return TRUE if FRAG1 and FRAG2 are the same. */
3964 is_same_frag (frag1
, frag2
)
3971 else if (frag2
== NULL
)
3973 else if (frag1
== frag2
)
3975 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
3976 return (is_same_frag (frag1
, frag2
->fr_next
));
3982 /* Build an entry in the UNWIND subspace from the given function
3983 attributes in CALL_INFO. This is not needed for SOM as using
3984 R_ENTRY and R_EXIT relocations allow the linker to handle building
3985 of the unwind spaces. */
3988 pa_build_unwind_subspace (call_info
)
3989 struct call_info
*call_info
;
3992 asection
*seg
, *save_seg
;
3993 subsegT subseg
, save_subseg
;
3997 /* Get into the right seg/subseg. This may involve creating
3998 the seg the first time through. Make sure to have the
3999 old seg/subseg so that we can reset things when we are done. */
4000 subseg
= SUBSEG_UNWIND
;
4001 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4002 if (seg
== ASEC_NULL
)
4004 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4005 bfd_set_section_flags (stdoutput
, seg
,
4006 SEC_READONLY
| SEC_HAS_CONTENTS
4007 | SEC_LOAD
| SEC_RELOC
);
4011 save_subseg
= now_subseg
;
4012 subseg_set (seg
, subseg
);
4015 /* Get some space to hold relocation information for the unwind
4019 /* Relocation info. for start offset of the function. */
4020 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4021 call_info
->start_symbol
, (offsetT
) 0,
4022 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4026 /* Relocation info. for end offset of the function. */
4027 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4028 call_info
->end_symbol
, (offsetT
) 0,
4029 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4032 unwind
= (char *) &call_info
->ci_unwind
;
4033 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4037 FRAG_APPEND_1_CHAR (c
);
4041 /* Return back to the original segment/subsegment. */
4042 subseg_set (save_seg
, save_subseg
);
4046 /* Process a .CALLINFO pseudo-op. This information is used later
4047 to build unwind descriptors and maybe one day to support
4048 .ENTER and .LEAVE. */
4051 pa_callinfo (unused
)
4057 /* .CALLINFO must appear within a procedure definition. */
4058 if (!within_procedure
)
4059 as_bad (".callinfo is not within a procedure definition");
4061 /* Mark the fact that we found the .CALLINFO for the
4062 current procedure. */
4063 callinfo_found
= TRUE
;
4065 /* Iterate over the .CALLINFO arguments. */
4066 while (!is_end_of_statement ())
4068 name
= input_line_pointer
;
4069 c
= get_symbol_end ();
4070 /* Frame size specification. */
4071 if ((strncasecmp (name
, "frame", 5) == 0))
4073 p
= input_line_pointer
;
4075 input_line_pointer
++;
4076 temp
= get_absolute_expression ();
4077 if ((temp
& 0x3) != 0)
4079 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4083 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4084 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4087 /* Entry register (GR, GR and SR) specifications. */
4088 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4090 p
= input_line_pointer
;
4092 input_line_pointer
++;
4093 temp
= get_absolute_expression ();
4094 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4095 even though %r19 is caller saved. I think this is a bug in
4096 the HP assembler, and we are not going to emulate it. */
4097 if (temp
< 3 || temp
> 18)
4098 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4099 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4101 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4103 p
= input_line_pointer
;
4105 input_line_pointer
++;
4106 temp
= get_absolute_expression ();
4107 /* Similarly the HP assembler takes 31 as the high bound even
4108 though %fr21 is the last callee saved floating point register. */
4109 if (temp
< 12 || temp
> 21)
4110 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4111 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4113 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4115 p
= input_line_pointer
;
4117 input_line_pointer
++;
4118 temp
= get_absolute_expression ();
4120 as_bad ("Value for ENTRY_SR must be 3\n");
4122 /* Note whether or not this function performs any calls. */
4123 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4124 (strncasecmp (name
, "caller", 6) == 0))
4126 p
= input_line_pointer
;
4129 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4131 p
= input_line_pointer
;
4134 /* Should RP be saved into the stack. */
4135 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4137 p
= input_line_pointer
;
4139 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4141 /* Likewise for SP. */
4142 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4144 p
= input_line_pointer
;
4146 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4148 /* Is this an unwindable procedure. If so mark it so
4149 in the unwind descriptor. */
4150 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4152 p
= input_line_pointer
;
4154 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4156 /* Is this an interrupt routine. If so mark it in the
4157 unwind descriptor. */
4158 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4160 p
= input_line_pointer
;
4162 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4164 /* Is this a millicode routine. "millicode" isn't in my
4165 assembler manual, but my copy is old. The HP assembler
4166 accepts it, and there's a place in the unwind descriptor
4167 to drop the information, so we'll accept it too. */
4168 else if ((strncasecmp (name
, "millicode", 9) == 0))
4170 p
= input_line_pointer
;
4172 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4176 as_bad ("Invalid .CALLINFO argument: %s", name
);
4177 *input_line_pointer
= c
;
4179 if (!is_end_of_statement ())
4180 input_line_pointer
++;
4183 demand_empty_rest_of_line ();
4186 /* Switch into the code subspace. */
4192 sd_chain_struct
*sdchain
;
4194 /* First time through it might be necessary to create the
4196 if ((sdchain
= is_defined_space ("$TEXT$")) == NULL
)
4198 sdchain
= create_new_space (pa_def_spaces
[0].name
,
4199 pa_def_spaces
[0].spnum
,
4200 pa_def_spaces
[0].loadable
,
4201 pa_def_spaces
[0].defined
,
4202 pa_def_spaces
[0].private,
4203 pa_def_spaces
[0].sort
,
4204 pa_def_spaces
[0].segment
, 0);
4207 SPACE_DEFINED (sdchain
) = 1;
4208 subseg_set (text_section
, SUBSEG_CODE
);
4209 demand_empty_rest_of_line ();
4212 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4213 the .comm pseudo-op has the following symtax:
4215 <label> .comm <length>
4217 where <label> is optional and is a symbol whose address will be the start of
4218 a block of memory <length> bytes long. <length> must be an absolute
4219 expression. <length> bytes will be allocated in the current space
4228 label_symbol_struct
*label_symbol
= pa_get_label ();
4231 symbol
= label_symbol
->lss_label
;
4236 size
= get_absolute_expression ();
4240 /* It is incorrect to check S_IS_DEFINED at this point as
4241 the symbol will *always* be defined. FIXME. How to
4242 correctly determine when this label really as been
4244 if (S_GET_VALUE (symbol
))
4246 if (S_GET_VALUE (symbol
) != size
)
4248 as_warn ("Length of .comm \"%s\" is already %ld. Not changed.",
4249 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4255 S_SET_VALUE (symbol
, size
);
4256 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4257 S_SET_EXTERNAL (symbol
);
4259 /* colon() has already set the frag to the current location in the
4260 $BSS$ subspace; we need to reset the fragment to the zero address
4262 symbol
->sy_frag
= &zero_address_frag
;
4265 demand_empty_rest_of_line ();
4268 /* Process a .END pseudo-op. */
4274 demand_empty_rest_of_line ();
4277 /* Process a .ENTER pseudo-op. This is not supported. */
4285 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4291 if (!within_procedure
)
4292 as_bad ("Misplaced .entry. Ignored.");
4295 if (!callinfo_found
)
4296 as_bad ("Missing .callinfo.");
4298 demand_empty_rest_of_line ();
4299 within_entry_exit
= TRUE
;
4302 /* SOM defers building of unwind descriptors until the link phase.
4303 The assembler is responsible for creating an R_ENTRY relocation
4304 to mark the beginning of a region and hold the unwind bits, and
4305 for creating an R_EXIT relocation to mark the end of the region.
4307 FIXME. ELF should be using the same conventions! The problem
4308 is an unwind requires too much relocation space. Hmmm. Maybe
4309 if we split the unwind bits up between the relocations which
4310 denote the entry and exit points. */
4311 if (last_call_info
->start_symbol
!= NULL
)
4313 char *where
= frag_more (0);
4315 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4316 NULL
, (offsetT
) 0, NULL
,
4317 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4318 (int *) &last_call_info
->ci_unwind
.descriptor
);
4323 /* Handle a .EQU pseudo-op. */
4329 label_symbol_struct
*label_symbol
= pa_get_label ();
4334 symbol
= label_symbol
->lss_label
;
4336 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4338 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4339 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4344 as_bad (".REG must use a label");
4346 as_bad (".EQU must use a label");
4349 pa_undefine_label ();
4350 demand_empty_rest_of_line ();
4353 /* Helper function. Does processing for the end of a function. This
4354 usually involves creating some relocations or building special
4355 symbols to mark the end of the function. */
4362 where
= frag_more (0);
4365 /* Mark the end of the function, stuff away the location of the frag
4366 for the end of the function, and finally call pa_build_unwind_subspace
4367 to add an entry in the unwind table. */
4368 hppa_elf_mark_end_of_function ();
4369 pa_build_unwind_subspace (last_call_info
);
4371 /* SOM defers building of unwind descriptors until the link phase.
4372 The assembler is responsible for creating an R_ENTRY relocation
4373 to mark the beginning of a region and hold the unwind bits, and
4374 for creating an R_EXIT relocation to mark the end of the region.
4376 FIXME. ELF should be using the same conventions! The problem
4377 is an unwind requires too much relocation space. Hmmm. Maybe
4378 if we split the unwind bits up between the relocations which
4379 denote the entry and exit points. */
4380 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4382 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4383 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4387 /* Process a .EXIT pseudo-op. */
4393 if (!within_procedure
)
4394 as_bad (".EXIT must appear within a procedure");
4397 if (!callinfo_found
)
4398 as_bad ("Missing .callinfo");
4401 if (!within_entry_exit
)
4402 as_bad ("No .ENTRY for this .EXIT");
4405 within_entry_exit
= FALSE
;
4410 demand_empty_rest_of_line ();
4413 /* Process a .EXPORT directive. This makes functions external
4414 and provides information such as argument relocation entries
4424 name
= input_line_pointer
;
4425 c
= get_symbol_end ();
4426 /* Make sure the given symbol exists. */
4427 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4429 as_bad ("Cannot define export symbol: %s\n", name
);
4430 p
= input_line_pointer
;
4432 input_line_pointer
++;
4436 /* OK. Set the external bits and process argument relocations. */
4437 S_SET_EXTERNAL (symbol
);
4438 p
= input_line_pointer
;
4440 if (!is_end_of_statement ())
4442 input_line_pointer
++;
4443 pa_type_args (symbol
, 1);
4447 demand_empty_rest_of_line ();
4450 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4453 pa_type_args (symbolP
, is_export
)
4458 unsigned int temp
, arg_reloc
;
4459 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4460 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4462 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4465 input_line_pointer
+= 8;
4466 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4467 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4468 type
= SYMBOL_TYPE_ABSOLUTE
;
4470 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4472 input_line_pointer
+= 4;
4473 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4474 instead one should be IMPORTing/EXPORTing ENTRY types.
4476 Complain if one tries to EXPORT a CODE type since that's never
4477 done. Both GCC and HP C still try to IMPORT CODE types, so
4478 silently fix them to be ENTRY types. */
4479 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4482 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4484 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4485 type
= SYMBOL_TYPE_ENTRY
;
4489 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4490 type
= SYMBOL_TYPE_CODE
;
4493 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4495 input_line_pointer
+= 4;
4496 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4497 type
= SYMBOL_TYPE_DATA
;
4499 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4501 input_line_pointer
+= 5;
4502 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4503 type
= SYMBOL_TYPE_ENTRY
;
4505 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4507 input_line_pointer
+= 9;
4508 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4509 type
= SYMBOL_TYPE_MILLICODE
;
4511 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4513 input_line_pointer
+= 6;
4514 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4515 type
= SYMBOL_TYPE_PLABEL
;
4517 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4519 input_line_pointer
+= 8;
4520 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4521 type
= SYMBOL_TYPE_PRI_PROG
;
4523 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4525 input_line_pointer
+= 8;
4526 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4527 type
= SYMBOL_TYPE_SEC_PROG
;
4530 /* SOM requires much more information about symbol types
4531 than BFD understands. This is how we get this information
4532 to the SOM BFD backend. */
4533 #ifdef obj_set_symbol_type
4534 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4537 /* Now that the type of the exported symbol has been handled,
4538 handle any argument relocation information. */
4539 while (!is_end_of_statement ())
4541 if (*input_line_pointer
== ',')
4542 input_line_pointer
++;
4543 name
= input_line_pointer
;
4544 c
= get_symbol_end ();
4545 /* Argument sources. */
4546 if ((strncasecmp (name
, "argw", 4) == 0))
4548 p
= input_line_pointer
;
4550 input_line_pointer
++;
4551 temp
= atoi (name
+ 4);
4552 name
= input_line_pointer
;
4553 c
= get_symbol_end ();
4554 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4555 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4556 *input_line_pointer
= c
;
4558 /* The return value. */
4559 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4561 p
= input_line_pointer
;
4563 input_line_pointer
++;
4564 name
= input_line_pointer
;
4565 c
= get_symbol_end ();
4566 arg_reloc
= pa_build_arg_reloc (name
);
4567 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4568 *input_line_pointer
= c
;
4570 /* Privelege level. */
4571 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4573 p
= input_line_pointer
;
4575 input_line_pointer
++;
4576 temp
= atoi (input_line_pointer
);
4577 c
= get_symbol_end ();
4578 *input_line_pointer
= c
;
4582 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4583 p
= input_line_pointer
;
4586 if (!is_end_of_statement ())
4587 input_line_pointer
++;
4591 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4592 assembly file must either be defined in the assembly file, or
4593 explicitly IMPORTED from another. */
4602 name
= input_line_pointer
;
4603 c
= get_symbol_end ();
4605 symbol
= symbol_find (name
);
4606 /* Ugh. We might be importing a symbol defined earlier in the file,
4607 in which case all the code below will really screw things up
4608 (set the wrong segment, symbol flags & type, etc). */
4609 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4611 symbol
= symbol_find_or_make (name
);
4612 p
= input_line_pointer
;
4615 if (!is_end_of_statement ())
4617 input_line_pointer
++;
4618 pa_type_args (symbol
, 0);
4622 /* Sigh. To be compatable with the HP assembler and to help
4623 poorly written assembly code, we assign a type based on
4624 the the current segment. Note only BSF_FUNCTION really
4625 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4626 if (now_seg
== text_section
)
4627 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4629 /* If the section is undefined, then the symbol is undefined
4630 Since this is an import, leave the section undefined. */
4631 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4636 /* The symbol was already defined. Just eat everything up to
4637 the end of the current statement. */
4638 while (!is_end_of_statement ())
4639 input_line_pointer
++;
4642 demand_empty_rest_of_line ();
4645 /* Handle a .LABEL pseudo-op. */
4653 name
= input_line_pointer
;
4654 c
= get_symbol_end ();
4656 if (strlen (name
) > 0)
4659 p
= input_line_pointer
;
4664 as_warn ("Missing label name on .LABEL");
4667 if (!is_end_of_statement ())
4669 as_warn ("extra .LABEL arguments ignored.");
4670 ignore_rest_of_line ();
4672 demand_empty_rest_of_line ();
4675 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4684 /* Handle a .ORIGIN pseudo-op. */
4691 pa_undefine_label ();
4694 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4695 is for static functions. FIXME. Should share more code with .EXPORT. */
4704 name
= input_line_pointer
;
4705 c
= get_symbol_end ();
4707 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4709 as_bad ("Cannot define static symbol: %s\n", name
);
4710 p
= input_line_pointer
;
4712 input_line_pointer
++;
4716 S_CLEAR_EXTERNAL (symbol
);
4717 p
= input_line_pointer
;
4719 if (!is_end_of_statement ())
4721 input_line_pointer
++;
4722 pa_type_args (symbol
, 0);
4726 demand_empty_rest_of_line ();
4729 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4730 of a procedure from a syntatical point of view. */
4736 struct call_info
*call_info
;
4737 if (within_procedure
)
4738 as_fatal ("Nested procedures");
4740 /* Reset global variables for new procedure. */
4741 callinfo_found
= FALSE
;
4742 within_procedure
= TRUE
;
4744 /* Create another call_info structure. */
4745 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4748 as_fatal ("Cannot allocate unwind descriptor\n");
4750 bzero (call_info
, sizeof (struct call_info
));
4752 call_info
->ci_next
= NULL
;
4754 if (call_info_root
== NULL
)
4756 call_info_root
= call_info
;
4757 last_call_info
= call_info
;
4761 last_call_info
->ci_next
= call_info
;
4762 last_call_info
= call_info
;
4765 /* set up defaults on call_info structure */
4767 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4768 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4769 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4771 /* If we got a .PROC pseudo-op, we know that the function is defined
4772 locally. Make sure it gets into the symbol table. */
4774 label_symbol_struct
*label_symbol
= pa_get_label ();
4778 if (label_symbol
->lss_label
)
4780 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4781 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4784 as_bad ("Missing function name for .PROC (corrupted label chain)");
4787 last_call_info
->start_symbol
= NULL
;
4790 demand_empty_rest_of_line ();
4793 /* Process the syntatical end of a procedure. Make sure all the
4794 appropriate pseudo-ops were found within the procedure. */
4801 /* If we are within a procedure definition, make sure we've
4802 defined a label for the procedure; handle case where the
4803 label was defined after the .PROC directive.
4805 Note there's not need to diddle with the segment or fragment
4806 for the label symbol in this case. We have already switched
4807 into the new $CODE$ subspace at this point. */
4808 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4810 label_symbol_struct
*label_symbol
= pa_get_label ();
4814 if (label_symbol
->lss_label
)
4816 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4817 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4819 /* Also handle allocation of a fixup to hold the unwind
4820 information when the label appears after the proc/procend. */
4821 if (within_entry_exit
)
4823 char *where
= frag_more (0);
4825 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4826 NULL
, (offsetT
) 0, NULL
,
4827 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4828 (int *) &last_call_info
->ci_unwind
.descriptor
);
4833 as_bad ("Missing function name for .PROC (corrupted label chain)");
4836 as_bad ("Missing function name for .PROC");
4839 if (!within_procedure
)
4840 as_bad ("misplaced .procend");
4842 if (!callinfo_found
)
4843 as_bad ("Missing .callinfo for this procedure");
4845 if (within_entry_exit
)
4846 as_bad ("Missing .EXIT for a .ENTRY");
4849 /* ELF needs to mark the end of each function so that it can compute
4850 the size of the function (apparently its needed in the symbol table). */
4851 hppa_elf_mark_end_of_function ();
4854 within_procedure
= FALSE
;
4855 demand_empty_rest_of_line ();
4856 pa_undefine_label ();
4859 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4860 then create a new space entry to hold the information specified
4861 by the parameters to the .SPACE directive. */
4863 static sd_chain_struct
*
4864 pa_parse_space_stmt (space_name
, create_flag
)
4868 char *name
, *ptemp
, c
;
4869 char loadable
, defined
, private, sort
;
4871 asection
*seg
= NULL
;
4872 sd_chain_struct
*space
;
4874 /* load default values */
4880 if (strcmp (space_name
, "$TEXT$") == 0)
4882 seg
= pa_def_spaces
[0].segment
;
4883 defined
= pa_def_spaces
[0].defined
;
4884 private = pa_def_spaces
[0].private;
4885 sort
= pa_def_spaces
[0].sort
;
4886 spnum
= pa_def_spaces
[0].spnum
;
4888 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4890 seg
= pa_def_spaces
[1].segment
;
4891 defined
= pa_def_spaces
[1].defined
;
4892 private = pa_def_spaces
[1].private;
4893 sort
= pa_def_spaces
[1].sort
;
4894 spnum
= pa_def_spaces
[1].spnum
;
4897 if (!is_end_of_statement ())
4899 print_errors
= FALSE
;
4900 ptemp
= input_line_pointer
+ 1;
4901 /* First see if the space was specified as a number rather than
4902 as a name. According to the PA assembly manual the rest of
4903 the line should be ignored. */
4904 temp
= pa_parse_number (&ptemp
, 0);
4908 input_line_pointer
= ptemp
;
4912 while (!is_end_of_statement ())
4914 input_line_pointer
++;
4915 name
= input_line_pointer
;
4916 c
= get_symbol_end ();
4917 if ((strncasecmp (name
, "spnum", 5) == 0))
4919 *input_line_pointer
= c
;
4920 input_line_pointer
++;
4921 spnum
= get_absolute_expression ();
4923 else if ((strncasecmp (name
, "sort", 4) == 0))
4925 *input_line_pointer
= c
;
4926 input_line_pointer
++;
4927 sort
= get_absolute_expression ();
4929 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4931 *input_line_pointer
= c
;
4934 else if ((strncasecmp (name
, "notdefined", 10) == 0))
4936 *input_line_pointer
= c
;
4939 else if ((strncasecmp (name
, "private", 7) == 0))
4941 *input_line_pointer
= c
;
4946 as_bad ("Invalid .SPACE argument");
4947 *input_line_pointer
= c
;
4948 if (!is_end_of_statement ())
4949 input_line_pointer
++;
4953 print_errors
= TRUE
;
4956 if (create_flag
&& seg
== NULL
)
4957 seg
= subseg_new (space_name
, 0);
4959 /* If create_flag is nonzero, then create the new space with
4960 the attributes computed above. Else set the values in
4961 an already existing space -- this can only happen for
4962 the first occurence of a built-in space. */
4964 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
4965 private, sort
, seg
, 1);
4968 space
= is_defined_space (space_name
);
4969 SPACE_SPNUM (space
) = spnum
;
4970 SPACE_DEFINED (space
) = defined
& 1;
4971 SPACE_USER_DEFINED (space
) = 1;
4974 #ifdef obj_set_section_attributes
4975 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
4981 /* Handle a .SPACE pseudo-op; this switches the current space to the
4982 given space, creating the new space if necessary. */
4988 char *name
, c
, *space_name
, *save_s
;
4990 sd_chain_struct
*sd_chain
;
4992 if (within_procedure
)
4994 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
4995 ignore_rest_of_line ();
4999 /* Check for some of the predefined spaces. FIXME: most of the code
5000 below is repeated several times, can we extract the common parts
5001 and place them into a subroutine or something similar? */
5002 /* FIXME Is this (and the next IF stmt) really right?
5003 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5004 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5006 input_line_pointer
+= 6;
5007 sd_chain
= is_defined_space ("$TEXT$");
5008 if (sd_chain
== NULL
)
5009 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5010 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5011 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5013 current_space
= sd_chain
;
5014 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5016 = pa_subsegment_to_subspace (text_section
,
5017 sd_chain
->sd_last_subseg
);
5018 demand_empty_rest_of_line ();
5021 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5023 input_line_pointer
+= 9;
5024 sd_chain
= is_defined_space ("$PRIVATE$");
5025 if (sd_chain
== NULL
)
5026 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5027 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5028 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5030 current_space
= sd_chain
;
5031 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5033 = pa_subsegment_to_subspace (data_section
,
5034 sd_chain
->sd_last_subseg
);
5035 demand_empty_rest_of_line ();
5038 if (!strncasecmp (input_line_pointer
,
5039 GDB_DEBUG_SPACE_NAME
,
5040 strlen (GDB_DEBUG_SPACE_NAME
)))
5042 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5043 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5044 if (sd_chain
== NULL
)
5045 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5046 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5047 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5049 current_space
= sd_chain
;
5052 asection
*gdb_section
5053 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5055 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5057 = pa_subsegment_to_subspace (gdb_section
,
5058 sd_chain
->sd_last_subseg
);
5060 demand_empty_rest_of_line ();
5064 /* It could be a space specified by number. */
5066 save_s
= input_line_pointer
;
5067 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5069 if ((sd_chain
= pa_find_space_by_number (temp
)))
5071 current_space
= sd_chain
;
5073 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5075 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5076 sd_chain
->sd_last_subseg
);
5077 demand_empty_rest_of_line ();
5082 /* Not a number, attempt to create a new space. */
5084 input_line_pointer
= save_s
;
5085 name
= input_line_pointer
;
5086 c
= get_symbol_end ();
5087 space_name
= xmalloc (strlen (name
) + 1);
5088 strcpy (space_name
, name
);
5089 *input_line_pointer
= c
;
5091 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5092 current_space
= sd_chain
;
5094 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5095 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5096 sd_chain
->sd_last_subseg
);
5097 demand_empty_rest_of_line ();
5101 /* Switch to a new space. (I think). FIXME. */
5110 sd_chain_struct
*space
;
5112 name
= input_line_pointer
;
5113 c
= get_symbol_end ();
5114 space
= is_defined_space (name
);
5118 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5121 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5123 *input_line_pointer
= c
;
5124 demand_empty_rest_of_line ();
5127 /* If VALUE is an exact power of two between zero and 2^31, then
5128 return log2 (VALUE). Else return -1. */
5136 while ((1 << shift
) != value
&& shift
< 32)
5145 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5146 given subspace, creating the new subspace if necessary.
5148 FIXME. Should mirror pa_space more closely, in particular how
5149 they're broken up into subroutines. */
5152 pa_subspace (unused
)
5155 char *name
, *ss_name
, *alias
, c
;
5156 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5157 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5158 sd_chain_struct
*space
;
5159 ssd_chain_struct
*ssd
;
5162 if (within_procedure
)
5164 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5165 ignore_rest_of_line ();
5169 name
= input_line_pointer
;
5170 c
= get_symbol_end ();
5171 ss_name
= xmalloc (strlen (name
) + 1);
5172 strcpy (ss_name
, name
);
5173 *input_line_pointer
= c
;
5175 /* Load default values. */
5188 space
= current_space
;
5189 ssd
= is_defined_subspace (ss_name
);
5190 /* Allow user to override the builtin attributes of subspaces. But
5191 only allow the attributes to be changed once! */
5192 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5194 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5195 current_subspace
= ssd
;
5196 if (!is_end_of_statement ())
5197 as_warn ("Parameters of an existing subspace can\'t be modified");
5198 demand_empty_rest_of_line ();
5203 /* A new subspace. Load default values if it matches one of
5204 the builtin subspaces. */
5206 while (pa_def_subspaces
[i
].name
)
5208 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5210 loadable
= pa_def_subspaces
[i
].loadable
;
5211 common
= pa_def_subspaces
[i
].common
;
5212 dup_common
= pa_def_subspaces
[i
].dup_common
;
5213 code_only
= pa_def_subspaces
[i
].code_only
;
5214 zero
= pa_def_subspaces
[i
].zero
;
5215 space_index
= pa_def_subspaces
[i
].space_index
;
5216 alignment
= pa_def_subspaces
[i
].alignment
;
5217 quadrant
= pa_def_subspaces
[i
].quadrant
;
5218 access
= pa_def_subspaces
[i
].access
;
5219 sort
= pa_def_subspaces
[i
].sort
;
5220 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5221 alias
= pa_def_subspaces
[i
].alias
;
5228 /* We should be working with a new subspace now. Fill in
5229 any information as specified by the user. */
5230 if (!is_end_of_statement ())
5232 input_line_pointer
++;
5233 while (!is_end_of_statement ())
5235 name
= input_line_pointer
;
5236 c
= get_symbol_end ();
5237 if ((strncasecmp (name
, "quad", 4) == 0))
5239 *input_line_pointer
= c
;
5240 input_line_pointer
++;
5241 quadrant
= get_absolute_expression ();
5243 else if ((strncasecmp (name
, "align", 5) == 0))
5245 *input_line_pointer
= c
;
5246 input_line_pointer
++;
5247 alignment
= get_absolute_expression ();
5248 if (log2 (alignment
) == -1)
5250 as_bad ("Alignment must be a power of 2");
5254 else if ((strncasecmp (name
, "access", 6) == 0))
5256 *input_line_pointer
= c
;
5257 input_line_pointer
++;
5258 access
= get_absolute_expression ();
5260 else if ((strncasecmp (name
, "sort", 4) == 0))
5262 *input_line_pointer
= c
;
5263 input_line_pointer
++;
5264 sort
= get_absolute_expression ();
5266 else if ((strncasecmp (name
, "code_only", 9) == 0))
5268 *input_line_pointer
= c
;
5271 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5273 *input_line_pointer
= c
;
5276 else if ((strncasecmp (name
, "common", 6) == 0))
5278 *input_line_pointer
= c
;
5281 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5283 *input_line_pointer
= c
;
5286 else if ((strncasecmp (name
, "zero", 4) == 0))
5288 *input_line_pointer
= c
;
5291 else if ((strncasecmp (name
, "first", 5) == 0))
5292 as_bad ("FIRST not supported as a .SUBSPACE argument");
5294 as_bad ("Invalid .SUBSPACE argument");
5295 if (!is_end_of_statement ())
5296 input_line_pointer
++;
5300 /* Compute a reasonable set of BFD flags based on the information
5301 in the .subspace directive. */
5302 applicable
= bfd_applicable_section_flags (stdoutput
);
5305 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5308 if (common
|| dup_common
)
5309 flags
|= SEC_IS_COMMON
;
5311 /* This is a zero-filled subspace (eg BSS). */
5315 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5316 applicable
&= flags
;
5318 /* If this is an existing subspace, then we want to use the
5319 segment already associated with the subspace.
5321 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5322 lots of sections. It might be a problem in the PA ELF
5323 code, I do not know yet. For now avoid creating anything
5324 but the "standard" sections for ELF. */
5326 section
= ssd
->ssd_seg
;
5328 section
= subseg_new (alias
, 0);
5329 else if (!alias
&& USE_ALIASES
)
5331 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5332 demand_empty_rest_of_line ();
5336 section
= subseg_new (ss_name
, 0);
5338 /* Now set the flags. */
5339 bfd_set_section_flags (stdoutput
, section
, applicable
);
5341 /* Record any alignment request for this section. */
5342 record_alignment (section
, log2 (alignment
));
5344 /* Set the starting offset for this section. */
5345 bfd_set_section_vma (stdoutput
, section
,
5346 pa_subspace_start (space
, quadrant
));
5348 /* Now that all the flags are set, update an existing subspace,
5349 or create a new one. */
5352 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5353 code_only
, common
, dup_common
,
5354 sort
, zero
, access
, space_index
,
5355 alignment
, quadrant
,
5358 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5360 dup_common
, zero
, sort
,
5361 access
, space_index
,
5362 alignment
, quadrant
, section
);
5364 demand_empty_rest_of_line ();
5365 current_subspace
->ssd_seg
= section
;
5366 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5368 SUBSPACE_DEFINED (current_subspace
) = 1;
5372 /* Create default space and subspace dictionaries. */
5379 space_dict_root
= NULL
;
5380 space_dict_last
= NULL
;
5383 while (pa_def_spaces
[i
].name
)
5387 /* Pick the right name to use for the new section. */
5388 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5389 name
= pa_def_spaces
[i
].alias
;
5391 name
= pa_def_spaces
[i
].name
;
5393 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5394 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5395 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5396 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5397 pa_def_spaces
[i
].segment
, 0);
5402 while (pa_def_subspaces
[i
].name
)
5405 int applicable
, subsegment
;
5406 asection
*segment
= NULL
;
5407 sd_chain_struct
*space
;
5409 /* Pick the right name for the new section and pick the right
5410 subsegment number. */
5411 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5413 name
= pa_def_subspaces
[i
].alias
;
5414 subsegment
= pa_def_subspaces
[i
].subsegment
;
5418 name
= pa_def_subspaces
[i
].name
;
5422 /* Create the new section. */
5423 segment
= subseg_new (name
, subsegment
);
5426 /* For SOM we want to replace the standard .text, .data, and .bss
5427 sections with our own. We also want to set BFD flags for
5428 all the built-in subspaces. */
5429 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5431 text_section
= segment
;
5432 applicable
= bfd_applicable_section_flags (stdoutput
);
5433 bfd_set_section_flags (stdoutput
, segment
,
5434 applicable
& (SEC_ALLOC
| SEC_LOAD
5435 | SEC_RELOC
| SEC_CODE
5437 | SEC_HAS_CONTENTS
));
5439 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5441 data_section
= segment
;
5442 applicable
= bfd_applicable_section_flags (stdoutput
);
5443 bfd_set_section_flags (stdoutput
, segment
,
5444 applicable
& (SEC_ALLOC
| SEC_LOAD
5446 | SEC_HAS_CONTENTS
));
5450 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5452 bss_section
= segment
;
5453 applicable
= bfd_applicable_section_flags (stdoutput
);
5454 bfd_set_section_flags (stdoutput
, segment
,
5455 applicable
& SEC_ALLOC
);
5457 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5459 applicable
= bfd_applicable_section_flags (stdoutput
);
5460 bfd_set_section_flags (stdoutput
, segment
,
5461 applicable
& (SEC_ALLOC
| SEC_LOAD
5464 | SEC_HAS_CONTENTS
));
5466 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5468 applicable
= bfd_applicable_section_flags (stdoutput
);
5469 bfd_set_section_flags (stdoutput
, segment
,
5470 applicable
& (SEC_ALLOC
| SEC_LOAD
5473 | SEC_HAS_CONTENTS
));
5476 /* Find the space associated with this subspace. */
5477 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5478 def_space_index
].segment
);
5481 as_fatal ("Internal error: Unable to find containing space for %s.",
5482 pa_def_subspaces
[i
].name
);
5485 create_new_subspace (space
, name
,
5486 pa_def_subspaces
[i
].loadable
,
5487 pa_def_subspaces
[i
].code_only
,
5488 pa_def_subspaces
[i
].common
,
5489 pa_def_subspaces
[i
].dup_common
,
5490 pa_def_subspaces
[i
].zero
,
5491 pa_def_subspaces
[i
].sort
,
5492 pa_def_subspaces
[i
].access
,
5493 pa_def_subspaces
[i
].space_index
,
5494 pa_def_subspaces
[i
].alignment
,
5495 pa_def_subspaces
[i
].quadrant
,
5503 /* Create a new space NAME, with the appropriate flags as defined
5504 by the given parameters. */
5506 static sd_chain_struct
*
5507 create_new_space (name
, spnum
, loadable
, defined
, private,
5508 sort
, seg
, user_defined
)
5518 sd_chain_struct
*chain_entry
;
5520 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5522 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5525 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5526 strcpy (SPACE_NAME (chain_entry
), name
);
5527 SPACE_DEFINED (chain_entry
) = defined
;
5528 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5529 SPACE_SPNUM (chain_entry
) = spnum
;
5531 chain_entry
->sd_seg
= seg
;
5532 chain_entry
->sd_last_subseg
= -1;
5533 chain_entry
->sd_subspaces
= NULL
;
5534 chain_entry
->sd_next
= NULL
;
5536 /* Find spot for the new space based on its sort key. */
5537 if (!space_dict_last
)
5538 space_dict_last
= chain_entry
;
5540 if (space_dict_root
== NULL
)
5541 space_dict_root
= chain_entry
;
5544 sd_chain_struct
*chain_pointer
;
5545 sd_chain_struct
*prev_chain_pointer
;
5547 chain_pointer
= space_dict_root
;
5548 prev_chain_pointer
= NULL
;
5550 while (chain_pointer
)
5552 prev_chain_pointer
= chain_pointer
;
5553 chain_pointer
= chain_pointer
->sd_next
;
5556 /* At this point we've found the correct place to add the new
5557 entry. So add it and update the linked lists as appropriate. */
5558 if (prev_chain_pointer
)
5560 chain_entry
->sd_next
= chain_pointer
;
5561 prev_chain_pointer
->sd_next
= chain_entry
;
5565 space_dict_root
= chain_entry
;
5566 chain_entry
->sd_next
= chain_pointer
;
5569 if (chain_entry
->sd_next
== NULL
)
5570 space_dict_last
= chain_entry
;
5573 /* This is here to catch predefined spaces which do not get
5574 modified by the user's input. Another call is found at
5575 the bottom of pa_parse_space_stmt to handle cases where
5576 the user modifies a predefined space. */
5577 #ifdef obj_set_section_attributes
5578 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5584 /* Create a new subspace NAME, with the appropriate flags as defined
5585 by the given parameters.
5587 Add the new subspace to the subspace dictionary chain in numerical
5588 order as defined by the SORT entries. */
5590 static ssd_chain_struct
*
5591 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5592 dup_common
, is_zero
, sort
, access
, space_index
,
5593 alignment
, quadrant
, seg
)
5594 sd_chain_struct
*space
;
5596 int loadable
, code_only
, common
, dup_common
, is_zero
;
5604 ssd_chain_struct
*chain_entry
;
5606 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5608 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5610 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5611 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5613 /* Initialize subspace_defined. When we hit a .subspace directive
5614 we'll set it to 1 which "locks-in" the subspace attributes. */
5615 SUBSPACE_DEFINED (chain_entry
) = 0;
5617 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5618 chain_entry
->ssd_seg
= seg
;
5619 chain_entry
->ssd_next
= NULL
;
5621 /* Find spot for the new subspace based on its sort key. */
5622 if (space
->sd_subspaces
== NULL
)
5623 space
->sd_subspaces
= chain_entry
;
5626 ssd_chain_struct
*chain_pointer
;
5627 ssd_chain_struct
*prev_chain_pointer
;
5629 chain_pointer
= space
->sd_subspaces
;
5630 prev_chain_pointer
= NULL
;
5632 while (chain_pointer
)
5634 prev_chain_pointer
= chain_pointer
;
5635 chain_pointer
= chain_pointer
->ssd_next
;
5638 /* Now we have somewhere to put the new entry. Insert it and update
5640 if (prev_chain_pointer
)
5642 chain_entry
->ssd_next
= chain_pointer
;
5643 prev_chain_pointer
->ssd_next
= chain_entry
;
5647 space
->sd_subspaces
= chain_entry
;
5648 chain_entry
->ssd_next
= chain_pointer
;
5652 #ifdef obj_set_subsection_attributes
5653 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5660 /* Update the information for the given subspace based upon the
5661 various arguments. Return the modified subspace chain entry. */
5663 static ssd_chain_struct
*
5664 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5665 zero
, access
, space_index
, alignment
, quadrant
, section
)
5666 sd_chain_struct
*space
;
5680 ssd_chain_struct
*chain_entry
;
5682 chain_entry
= is_defined_subspace (name
);
5684 #ifdef obj_set_subsection_attributes
5685 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5692 /* Return the space chain entry for the space with the name NAME or
5693 NULL if no such space exists. */
5695 static sd_chain_struct
*
5696 is_defined_space (name
)
5699 sd_chain_struct
*chain_pointer
;
5701 for (chain_pointer
= space_dict_root
;
5703 chain_pointer
= chain_pointer
->sd_next
)
5705 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5706 return chain_pointer
;
5709 /* No mapping from segment to space was found. Return NULL. */
5713 /* Find and return the space associated with the given seg. If no mapping
5714 from the given seg to a space is found, then return NULL.
5716 Unlike subspaces, the number of spaces is not expected to grow much,
5717 so a linear exhaustive search is OK here. */
5719 static sd_chain_struct
*
5720 pa_segment_to_space (seg
)
5723 sd_chain_struct
*space_chain
;
5725 /* Walk through each space looking for the correct mapping. */
5726 for (space_chain
= space_dict_root
;
5728 space_chain
= space_chain
->sd_next
)
5730 if (space_chain
->sd_seg
== seg
)
5734 /* Mapping was not found. Return NULL. */
5738 /* Return the space chain entry for the subspace with the name NAME or
5739 NULL if no such subspace exists.
5741 Uses a linear search through all the spaces and subspaces, this may
5742 not be appropriate if we ever being placing each function in its
5745 static ssd_chain_struct
*
5746 is_defined_subspace (name
)
5749 sd_chain_struct
*space_chain
;
5750 ssd_chain_struct
*subspace_chain
;
5752 /* Walk through each space. */
5753 for (space_chain
= space_dict_root
;
5755 space_chain
= space_chain
->sd_next
)
5757 /* Walk through each subspace looking for a name which matches. */
5758 for (subspace_chain
= space_chain
->sd_subspaces
;
5760 subspace_chain
= subspace_chain
->ssd_next
)
5761 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5762 return subspace_chain
;
5765 /* Subspace wasn't found. Return NULL. */
5769 /* Find and return the subspace associated with the given seg. If no
5770 mapping from the given seg to a subspace is found, then return NULL.
5772 If we ever put each procedure/function within its own subspace
5773 (to make life easier on the compiler and linker), then this will have
5774 to become more efficient. */
5776 static ssd_chain_struct
*
5777 pa_subsegment_to_subspace (seg
, subseg
)
5781 sd_chain_struct
*space_chain
;
5782 ssd_chain_struct
*subspace_chain
;
5784 /* Walk through each space. */
5785 for (space_chain
= space_dict_root
;
5787 space_chain
= space_chain
->sd_next
)
5789 if (space_chain
->sd_seg
== seg
)
5791 /* Walk through each subspace within each space looking for
5792 the correct mapping. */
5793 for (subspace_chain
= space_chain
->sd_subspaces
;
5795 subspace_chain
= subspace_chain
->ssd_next
)
5796 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5797 return subspace_chain
;
5801 /* No mapping from subsegment to subspace found. Return NULL. */
5805 /* Given a number, try and find a space with the name number.
5807 Return a pointer to a space dictionary chain entry for the space
5808 that was found or NULL on failure. */
5810 static sd_chain_struct
*
5811 pa_find_space_by_number (number
)
5814 sd_chain_struct
*space_chain
;
5816 for (space_chain
= space_dict_root
;
5818 space_chain
= space_chain
->sd_next
)
5820 if (SPACE_SPNUM (space_chain
) == number
)
5824 /* No appropriate space found. Return NULL. */
5828 /* Return the starting address for the given subspace. If the starting
5829 address is unknown then return zero. */
5832 pa_subspace_start (space
, quadrant
)
5833 sd_chain_struct
*space
;
5836 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5837 is not correct for the PA OSF1 port. */
5838 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5840 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5846 /* FIXME. Needs documentation. */
5848 pa_next_subseg (space
)
5849 sd_chain_struct
*space
;
5852 space
->sd_last_subseg
++;
5853 return space
->sd_last_subseg
;
5856 /* Helper function for pa_stringer. Used to find the end of
5863 unsigned int c
= *s
& CHAR_MASK
;
5875 /* Handle a .STRING type pseudo-op. */
5878 pa_stringer (append_zero
)
5881 char *s
, num_buf
[4];
5885 /* Preprocess the string to handle PA-specific escape sequences.
5886 For example, \xDD where DD is a hexidecimal number should be
5887 changed to \OOO where OOO is an octal number. */
5889 /* Skip the opening quote. */
5890 s
= input_line_pointer
+ 1;
5892 while (is_a_char (c
= pa_stringer_aux (s
++)))
5899 /* Handle \x<num>. */
5902 unsigned int number
;
5907 /* Get pas the 'x'. */
5909 for (num_digit
= 0, number
= 0, dg
= *s
;
5911 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5912 || (dg
>= 'A' && dg
<= 'F'));
5916 number
= number
* 16 + dg
- '0';
5917 else if (dg
>= 'a' && dg
<= 'f')
5918 number
= number
* 16 + dg
- 'a' + 10;
5920 number
= number
* 16 + dg
- 'A' + 10;
5930 sprintf (num_buf
, "%02o", number
);
5933 sprintf (num_buf
, "%03o", number
);
5936 for (i
= 0; i
<= num_digit
; i
++)
5937 s_start
[i
] = num_buf
[i
];
5941 /* This might be a "\"", skip over the escaped char. */
5948 stringer (append_zero
);
5949 pa_undefine_label ();
5952 /* Handle a .VERSION pseudo-op. */
5959 pa_undefine_label ();
5962 /* Handle a .COPYRIGHT pseudo-op. */
5965 pa_copyright (unused
)
5969 pa_undefine_label ();
5972 /* Just like a normal cons, but when finished we have to undefine
5973 the latest space label. */
5980 pa_undefine_label ();
5983 /* Switch to the data space. As usual delete our label. */
5989 current_space
= is_defined_space ("$PRIVATE$");
5991 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
5993 pa_undefine_label ();
5996 /* Like float_cons, but we need to undefine our label. */
5999 pa_float_cons (float_type
)
6002 float_cons (float_type
);
6003 pa_undefine_label ();
6006 /* Like s_fill, but delete our label when finished. */
6013 pa_undefine_label ();
6016 /* Like lcomm, but delete our label when finished. */
6019 pa_lcomm (needs_align
)
6022 s_lcomm (needs_align
);
6023 pa_undefine_label ();
6026 /* Like lsym, but delete our label when finished. */
6033 pa_undefine_label ();
6036 /* Switch to the text space. Like s_text, but delete our
6037 label when finished. */
6042 current_space
= is_defined_space ("$TEXT$");
6044 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6047 pa_undefine_label ();
6050 /* On the PA relocations which involve function symbols must not be
6051 adjusted. This so that the linker can know when/how to create argument
6052 relocation stubs for indirect calls and calls to static functions.
6054 "T" field selectors create DLT relative fixups for accessing
6055 globals and statics in PIC code; each DLT relative fixup creates
6056 an entry in the DLT table. The entries contain the address of
6057 the final target (eg accessing "foo" would create a DLT entry
6058 with the address of "foo").
6060 Unfortunately, the HP linker doesn't take into account any addend
6061 when generating the DLT; so accessing $LIT$+8 puts the address of
6062 $LIT$ into the DLT rather than the address of $LIT$+8.
6064 The end result is we can't perform relocation symbol reductions for
6065 any fixup which creates entries in the DLT (eg they use "T" field
6068 Reject reductions involving symbols with external scope; such
6069 reductions make life a living hell for object file editors.
6071 FIXME. Also reject R_HPPA relocations which are 32 bits
6072 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6073 needs to generate relocations to push the addend and symbol value
6074 onto the stack, add them, then pop the value off the stack and
6075 use it in a relocation -- yuk. */
6078 hppa_fix_adjustable (fixp
)
6081 struct hppa_fix_struct
*hppa_fix
;
6083 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6085 /* Reject reductions of symbols in 32bit plabel relocs. */
6086 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6089 /* Reject reductions of symbols in DLT relative relocs. */
6090 if (hppa_fix
->fx_r_field
== e_tsel
6091 || hppa_fix
->fx_r_field
== e_ltsel
6092 || hppa_fix
->fx_r_field
== e_rtsel
)
6095 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6098 /* Reject reductions of function symbols. */
6099 if (fixp
->fx_addsy
== 0
6100 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6106 /* Return nonzero if the fixup in FIXP will require a relocation,
6107 even it if appears that the fixup could be completely handled
6111 hppa_force_relocation (fixp
)
6114 struct hppa_fix_struct
*hppa_fixp
;
6116 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6118 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6122 #define stub_needed(CALLER, CALLEE) \
6123 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6125 /* It is necessary to force PC-relative calls/jumps to have a relocation
6126 entry if they're going to need either a argument relocation or long
6127 call stub. FIXME. Can't we need the same for absolute calls? */
6128 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6129 && (stub_needed (((obj_symbol_type
*)
6130 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6131 hppa_fixp
->fx_arg_reloc
)))
6136 /* No need (yet) to force another relocations to be emitted. */
6140 /* Now for some ELF specific code. FIXME. */
6142 /* Mark the end of a function so that it's possible to compute
6143 the size of the function in hppa_elf_final_processing. */
6146 hppa_elf_mark_end_of_function ()
6148 /* ELF does not have EXIT relocations. All we do is create a
6149 temporary symbol marking the end of the function. */
6150 char *name
= (char *)
6151 xmalloc (strlen ("L$\001end_") +
6152 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6158 strcpy (name
, "L$\001end_");
6159 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6161 /* If we have a .exit followed by a .procend, then the
6162 symbol will have already been defined. */
6163 symbolP
= symbol_find (name
);
6166 /* The symbol has already been defined! This can
6167 happen if we have a .exit followed by a .procend.
6169 This is *not* an error. All we want to do is free
6170 the memory we just allocated for the name and continue. */
6175 /* symbol value should be the offset of the
6176 last instruction of the function */
6177 symbolP
= symbol_new (name
, now_seg
,
6178 (valueT
) (obstack_next_free (&frags
)
6179 - frag_now
->fr_literal
- 4),
6183 symbolP
->bsym
->flags
= BSF_LOCAL
;
6184 symbol_table_insert (symbolP
);
6188 last_call_info
->end_symbol
= symbolP
;
6190 as_bad ("Symbol '%s' could not be created.", name
);
6194 as_bad ("No memory for symbol name.");
6198 /* For ELF, this function serves one purpose: to setup the st_size
6199 field of STT_FUNC symbols. To do this, we need to scan the
6200 call_info structure list, determining st_size in by taking the
6201 difference in the address of the beginning/end marker symbols. */
6204 elf_hppa_final_processing ()
6206 struct call_info
*call_info_pointer
;
6208 for (call_info_pointer
= call_info_root
;
6210 call_info_pointer
= call_info_pointer
->ci_next
)
6212 elf_symbol_type
*esym
6213 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6214 esym
->internal_elf_sym
.st_size
=
6215 S_GET_VALUE (call_info_pointer
->end_symbol
)
6216 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;