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 /* Size of the function in bytes. */
149 unsigned long function_size
;
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 void pa_check_current_space_and_subspace
PARAMS ((void));
455 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
456 static void pa_cons
PARAMS ((int));
457 static void pa_data
PARAMS ((int));
458 static void pa_float_cons
PARAMS ((int));
459 static void pa_fill
PARAMS ((int));
460 static void pa_lcomm
PARAMS ((int));
461 static void pa_lsym
PARAMS ((int));
462 static void pa_stringer
PARAMS ((int));
463 static void pa_text
PARAMS ((int));
464 static void pa_version
PARAMS ((int));
465 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
466 static int get_expression
PARAMS ((char *));
467 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
468 static int evaluate_absolute
PARAMS ((struct pa_it
*));
469 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
470 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
471 static int pa_parse_nullif
PARAMS ((char **));
472 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
473 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
475 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
476 static void pa_align
PARAMS ((int));
477 static void pa_block
PARAMS ((int));
478 static void pa_call
PARAMS ((int));
479 static void pa_call_args
PARAMS ((struct call_desc
*));
480 static void pa_callinfo
PARAMS ((int));
481 static void pa_code
PARAMS ((int));
482 static void pa_comm
PARAMS ((int));
483 static void pa_copyright
PARAMS ((int));
484 static void pa_end
PARAMS ((int));
485 static void pa_enter
PARAMS ((int));
486 static void pa_entry
PARAMS ((int));
487 static void pa_equ
PARAMS ((int));
488 static void pa_exit
PARAMS ((int));
489 static void pa_export
PARAMS ((int));
490 static void pa_type_args
PARAMS ((symbolS
*, int));
491 static void pa_import
PARAMS ((int));
492 static void pa_label
PARAMS ((int));
493 static void pa_leave
PARAMS ((int));
494 static void pa_origin
PARAMS ((int));
495 static void pa_proc
PARAMS ((int));
496 static void pa_procend
PARAMS ((int));
497 static void pa_space
PARAMS ((int));
498 static void pa_spnum
PARAMS ((int));
499 static void pa_subspace
PARAMS ((int));
500 static void pa_param
PARAMS ((int));
501 static void pa_undefine_label
PARAMS ((void));
502 static int need_89_opcode
PARAMS ((struct pa_it
*,
503 struct pa_89_fp_reg_struct
*));
504 static int pa_parse_number
PARAMS ((char **, struct pa_89_fp_reg_struct
*));
505 static label_symbol_struct
*pa_get_label
PARAMS ((void));
506 static sd_chain_struct
*create_new_space
PARAMS ((char *, int, int,
509 static ssd_chain_struct
*create_new_subspace
PARAMS ((sd_chain_struct
*,
514 static ssd_chain_struct
*update_subspace
PARAMS ((sd_chain_struct
*,
515 char *, int, int, int,
519 static sd_chain_struct
*is_defined_space
PARAMS ((char *));
520 static ssd_chain_struct
*is_defined_subspace
PARAMS ((char *));
521 static sd_chain_struct
*pa_segment_to_space
PARAMS ((asection
*));
522 static ssd_chain_struct
*pa_subsegment_to_subspace
PARAMS ((asection
*,
524 static sd_chain_struct
*pa_find_space_by_number
PARAMS ((int));
525 static unsigned int pa_subspace_start
PARAMS ((sd_chain_struct
*, int));
526 static void pa_ip
PARAMS ((char *));
527 static void fix_new_hppa
PARAMS ((fragS
*, int, int, symbolS
*,
528 long, expressionS
*, int,
529 bfd_reloc_code_real_type
,
530 enum hppa_reloc_field_selector_type
,
532 static int is_end_of_statement
PARAMS ((void));
533 static int reg_name_search
PARAMS ((char *));
534 static int pa_chk_field_selector
PARAMS ((char **));
535 static int is_same_frag
PARAMS ((fragS
*, fragS
*));
536 static void pa_build_unwind_subspace
PARAMS ((struct call_info
*));
537 static void process_exit
PARAMS ((void));
538 static sd_chain_struct
*pa_parse_space_stmt
PARAMS ((char *, int));
539 static int log2
PARAMS ((int));
540 static int pa_next_subseg
PARAMS ((sd_chain_struct
*));
541 static unsigned int pa_stringer_aux
PARAMS ((char *));
542 static void pa_spaces_begin
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 /* Called before writing the object file. Make sure entry/exit and
1062 proc/procend pairs match. */
1067 if (within_entry_exit
)
1068 as_fatal ("Missing .exit\n");
1070 if (within_procedure
)
1071 as_fatal ("Missing .procend\n");
1074 /* Check to make sure we have a valid space and subspace. */
1077 pa_check_current_space_and_subspace ()
1079 if (current_space
== NULL
)
1080 as_fatal ("Not in a space.\n");
1082 if (current_subspace
== NULL
)
1083 as_fatal ("Not in a subspace.\n");
1086 /* Returns a pointer to the label_symbol_struct for the current space.
1087 or NULL if no label_symbol_struct exists for the current space. */
1089 static label_symbol_struct
*
1092 label_symbol_struct
*label_chain
;
1093 sd_chain_struct
*space_chain
= current_space
;
1095 for (label_chain
= label_symbols_rootp
;
1097 label_chain
= label_chain
->lss_next
)
1098 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1104 /* Defines a label for the current space. If one is already defined,
1105 this function will replace it with the new label. */
1108 pa_define_label (symbol
)
1111 label_symbol_struct
*label_chain
= pa_get_label ();
1112 sd_chain_struct
*space_chain
= current_space
;
1115 label_chain
->lss_label
= symbol
;
1118 /* Create a new label entry and add it to the head of the chain. */
1120 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1121 label_chain
->lss_label
= symbol
;
1122 label_chain
->lss_space
= space_chain
;
1123 label_chain
->lss_next
= NULL
;
1125 if (label_symbols_rootp
)
1126 label_chain
->lss_next
= label_symbols_rootp
;
1128 label_symbols_rootp
= label_chain
;
1132 /* Removes a label definition for the current space.
1133 If there is no label_symbol_struct entry, then no action is taken. */
1136 pa_undefine_label ()
1138 label_symbol_struct
*label_chain
;
1139 label_symbol_struct
*prev_label_chain
= NULL
;
1140 sd_chain_struct
*space_chain
= current_space
;
1142 for (label_chain
= label_symbols_rootp
;
1144 label_chain
= label_chain
->lss_next
)
1146 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1148 /* Remove the label from the chain and free its memory. */
1149 if (prev_label_chain
)
1150 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1152 label_symbols_rootp
= label_chain
->lss_next
;
1157 prev_label_chain
= label_chain
;
1162 /* An HPPA-specific version of fix_new. This is required because the HPPA
1163 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1164 results in the creation of an instance of an hppa_fix_struct. An
1165 hppa_fix_struct stores the extra information along with a pointer to the
1166 original fixS. This is attached to the original fixup via the
1167 tc_fix_data field. */
1170 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1171 r_type
, r_field
, r_format
, arg_reloc
, unwind_bits
)
1175 symbolS
*add_symbol
;
1179 bfd_reloc_code_real_type r_type
;
1180 enum hppa_reloc_field_selector_type r_field
;
1187 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1188 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1191 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1193 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1194 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1195 hppa_fix
->fx_r_type
= r_type
;
1196 hppa_fix
->fx_r_field
= r_field
;
1197 hppa_fix
->fx_r_format
= r_format
;
1198 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1199 hppa_fix
->segment
= now_seg
;
1201 if (r_type
== R_ENTRY
|| r_type
== R_EXIT
)
1202 new_fix
->fx_offset
= *unwind_bits
;
1205 /* foo-$global$ is used to access non-automatic storage. $global$
1206 is really just a marker and has served its purpose, so eliminate
1207 it now so as not to confuse write.c. */
1208 if (new_fix
->fx_subsy
1209 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1210 new_fix
->fx_subsy
= NULL
;
1213 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1214 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1217 parse_cons_expression_hppa (exp
)
1220 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1224 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1225 hppa_field_selector is set by the parse_cons_expression_hppa. */
1228 cons_fix_new_hppa (frag
, where
, size
, exp
)
1234 unsigned int rel_type
;
1236 /* Get a base relocation type. */
1237 if (is_DP_relative (*exp
))
1238 rel_type
= R_HPPA_GOTOFF
;
1239 else if (is_complex (*exp
))
1240 rel_type
= R_HPPA_COMPLEX
;
1244 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1245 as_warn ("Invalid field selector. Assuming F%%.");
1247 fix_new_hppa (frag
, where
, size
,
1248 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1249 hppa_field_selector
, 32, 0, NULL
);
1251 /* Reset field selector to its default state. */
1252 hppa_field_selector
= 0;
1255 /* This function is called once, at assembler startup time. It should
1256 set up all the tables, etc. that the MD part of the assembler will need. */
1261 const char *retval
= NULL
;
1265 last_call_info
= NULL
;
1266 call_info_root
= NULL
;
1268 /* Folding of text and data segments fails miserably on the PA.
1269 Warn user and disable "-R" option. */
1270 if (flag_readonly_data_in_text
)
1272 as_warn ("-R option not supported on this target.");
1273 flag_readonly_data_in_text
= 0;
1278 op_hash
= hash_new ();
1280 while (i
< NUMOPCODES
)
1282 const char *name
= pa_opcodes
[i
].name
;
1283 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1284 if (retval
!= NULL
&& *retval
!= '\0')
1286 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1291 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1292 != pa_opcodes
[i
].match
)
1294 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1295 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1300 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1304 as_fatal ("Broken assembler. No assembly attempted.");
1306 /* SOM will change text_section. To make sure we never put
1307 anything into the old one switch to the new one now. */
1308 subseg_set (text_section
, 0);
1310 dummy_symbol
= symbol_find_or_make ("L$dummy");
1311 S_SET_SEGMENT (dummy_symbol
, text_section
);
1314 /* Assemble a single instruction storing it into a frag. */
1321 /* The had better be something to assemble. */
1324 /* If we are within a procedure definition, make sure we've
1325 defined a label for the procedure; handle case where the
1326 label was defined after the .PROC directive.
1328 Note there's not need to diddle with the segment or fragment
1329 for the label symbol in this case. We have already switched
1330 into the new $CODE$ subspace at this point. */
1331 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1333 label_symbol_struct
*label_symbol
= pa_get_label ();
1337 if (label_symbol
->lss_label
)
1339 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1340 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1342 /* Also handle allocation of a fixup to hold the unwind
1343 information when the label appears after the proc/procend. */
1344 if (within_entry_exit
)
1346 char *where
= frag_more (0);
1348 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1349 NULL
, (offsetT
) 0, NULL
,
1350 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1351 (int *)&last_call_info
->ci_unwind
.descriptor
);
1356 as_bad ("Missing function name for .PROC (corrupted label chain)");
1359 as_bad ("Missing function name for .PROC");
1362 /* Assemble the instruction. Results are saved into "the_insn". */
1365 /* Get somewhere to put the assembled instrution. */
1368 /* Output the opcode. */
1369 md_number_to_chars (to
, the_insn
.opcode
, 4);
1371 /* If necessary output more stuff. */
1372 if (the_insn
.reloc
!= R_HPPA_NONE
)
1373 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1374 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1375 the_insn
.reloc
, the_insn
.field_selector
,
1376 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1379 /* Do the real work for assembling a single instruction. Store results
1380 into the global "the_insn" variable. */
1386 char *error_message
= "";
1387 char *s
, c
, *argstart
, *name
, *save_s
;
1391 int cmpltr
, nullif
, flag
, cond
, num
;
1392 unsigned long opcode
;
1393 struct pa_opcode
*insn
;
1395 /* We must have a valid space and subspace. */
1396 pa_check_current_space_and_subspace ();
1398 /* Skip to something interesting. */
1399 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1418 as_fatal ("Unknown opcode: `%s'", str
);
1423 /* Convert everything into lower case. */
1426 if (isupper (*save_s
))
1427 *save_s
= tolower (*save_s
);
1431 /* Look up the opcode in the has table. */
1432 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1434 as_bad ("Unknown opcode: `%s'", str
);
1443 /* Mark the location where arguments for the instruction start, then
1444 start processing them. */
1448 /* Do some initialization. */
1449 opcode
= insn
->match
;
1450 bzero (&the_insn
, sizeof (the_insn
));
1452 the_insn
.reloc
= R_HPPA_NONE
;
1454 /* Build the opcode, checking as we go to make
1455 sure that the operands match. */
1456 for (args
= insn
->args
;; ++args
)
1461 /* End of arguments. */
1477 /* These must match exactly. */
1486 /* Handle a 5 bit register or control register field at 10. */
1489 num
= pa_parse_number (&s
, 0);
1490 CHECK_FIELD (num
, 31, 0, 0);
1491 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1493 /* Handle a 5 bit register field at 15. */
1495 num
= pa_parse_number (&s
, 0);
1496 CHECK_FIELD (num
, 31, 0, 0);
1497 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1499 /* Handle a 5 bit register field at 31. */
1502 num
= pa_parse_number (&s
, 0);
1503 CHECK_FIELD (num
, 31, 0, 0);
1504 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1506 /* Handle a 5 bit field length at 31. */
1508 num
= pa_get_absolute_expression (&the_insn
, &s
);
1510 CHECK_FIELD (num
, 32, 1, 0);
1511 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1513 /* Handle a 5 bit immediate at 15. */
1515 num
= pa_get_absolute_expression (&the_insn
, &s
);
1517 CHECK_FIELD (num
, 15, -16, 0);
1518 low_sign_unext (num
, 5, &num
);
1519 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1521 /* Handle a 5 bit immediate at 31. */
1523 num
= pa_get_absolute_expression (&the_insn
, &s
);
1525 CHECK_FIELD (num
, 15, -16, 0)
1526 low_sign_unext (num
, 5, &num
);
1527 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1529 /* Handle an unsigned 5 bit immediate at 31. */
1531 num
= pa_get_absolute_expression (&the_insn
, &s
);
1533 CHECK_FIELD (num
, 31, 0, 0);
1534 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1536 /* Handle an unsigned 5 bit immediate at 15. */
1538 num
= pa_get_absolute_expression (&the_insn
, &s
);
1540 CHECK_FIELD (num
, 31, 0, 0);
1541 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1543 /* Handle a 2 bit space identifier at 17. */
1545 num
= pa_parse_number (&s
, 0);
1546 CHECK_FIELD (num
, 3, 0, 1);
1547 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1549 /* Handle a 3 bit space identifier at 18. */
1551 num
= pa_parse_number (&s
, 0);
1552 CHECK_FIELD (num
, 7, 0, 1);
1553 dis_assemble_3 (num
, &num
);
1554 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1556 /* Handle a completer for an indexing load or store. */
1562 while (*s
== ',' && i
< 2)
1565 if (strncasecmp (s
, "sm", 2) == 0)
1572 else if (strncasecmp (s
, "m", 1) == 0)
1574 else if (strncasecmp (s
, "s", 1) == 0)
1577 as_bad ("Invalid Indexed Load Completer.");
1582 as_bad ("Invalid Indexed Load Completer Syntax.");
1584 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1587 /* Handle a short load/store completer. */
1595 if (strncasecmp (s
, "ma", 2) == 0)
1600 else if (strncasecmp (s
, "mb", 2) == 0)
1606 as_bad ("Invalid Short Load/Store Completer.");
1610 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1613 /* Handle a stbys completer. */
1619 while (*s
== ',' && i
< 2)
1622 if (strncasecmp (s
, "m", 1) == 0)
1624 else if (strncasecmp (s
, "b", 1) == 0)
1626 else if (strncasecmp (s
, "e", 1) == 0)
1629 as_bad ("Invalid Store Bytes Short Completer");
1634 as_bad ("Invalid Store Bytes Short Completer");
1636 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1639 /* Handle a non-negated compare/stubtract condition. */
1641 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1644 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1647 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1649 /* Handle a negated or non-negated compare/subtract condition. */
1652 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1656 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1659 as_bad ("Invalid Compare/Subtract Condition.");
1664 /* Negated condition requires an opcode change. */
1668 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1670 /* Handle non-negated add condition. */
1672 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1675 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1678 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1680 /* Handle a negated or non-negated add condition. */
1683 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1687 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1690 as_bad ("Invalid Compare/Subtract Condition");
1695 /* Negated condition requires an opcode change. */
1699 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1701 /* Handle a compare/subtract condition. */
1708 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1713 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1716 as_bad ("Invalid Compare/Subtract Condition");
1720 opcode
|= cmpltr
<< 13;
1721 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1723 /* Handle a non-negated add condition. */
1732 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1736 if (strcmp (name
, "=") == 0)
1738 else if (strcmp (name
, "<") == 0)
1740 else if (strcmp (name
, "<=") == 0)
1742 else if (strcasecmp (name
, "nuv") == 0)
1744 else if (strcasecmp (name
, "znv") == 0)
1746 else if (strcasecmp (name
, "sv") == 0)
1748 else if (strcasecmp (name
, "od") == 0)
1750 else if (strcasecmp (name
, "n") == 0)
1752 else if (strcasecmp (name
, "tr") == 0)
1757 else if (strcmp (name
, "<>") == 0)
1762 else if (strcmp (name
, ">=") == 0)
1767 else if (strcmp (name
, ">") == 0)
1772 else if (strcasecmp (name
, "uv") == 0)
1777 else if (strcasecmp (name
, "vnz") == 0)
1782 else if (strcasecmp (name
, "nsv") == 0)
1787 else if (strcasecmp (name
, "ev") == 0)
1793 as_bad ("Invalid Add Condition: %s", name
);
1796 nullif
= pa_parse_nullif (&s
);
1797 opcode
|= nullif
<< 1;
1798 opcode
|= cmpltr
<< 13;
1799 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1801 /* HANDLE a logical instruction condition. */
1809 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1813 if (strcmp (name
, "=") == 0)
1815 else if (strcmp (name
, "<") == 0)
1817 else if (strcmp (name
, "<=") == 0)
1819 else if (strcasecmp (name
, "od") == 0)
1821 else if (strcasecmp (name
, "tr") == 0)
1826 else if (strcmp (name
, "<>") == 0)
1831 else if (strcmp (name
, ">=") == 0)
1836 else if (strcmp (name
, ">") == 0)
1841 else if (strcasecmp (name
, "ev") == 0)
1847 as_bad ("Invalid Logical Instruction Condition.");
1850 opcode
|= cmpltr
<< 13;
1851 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1853 /* Handle a unit instruction condition. */
1860 if (strncasecmp (s
, "sbz", 3) == 0)
1865 else if (strncasecmp (s
, "shz", 3) == 0)
1870 else if (strncasecmp (s
, "sdc", 3) == 0)
1875 else if (strncasecmp (s
, "sbc", 3) == 0)
1880 else if (strncasecmp (s
, "shc", 3) == 0)
1885 else if (strncasecmp (s
, "tr", 2) == 0)
1891 else if (strncasecmp (s
, "nbz", 3) == 0)
1897 else if (strncasecmp (s
, "nhz", 3) == 0)
1903 else if (strncasecmp (s
, "ndc", 3) == 0)
1909 else if (strncasecmp (s
, "nbc", 3) == 0)
1915 else if (strncasecmp (s
, "nhc", 3) == 0)
1922 as_bad ("Invalid Logical Instruction Condition.");
1924 opcode
|= cmpltr
<< 13;
1925 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1927 /* Handle a shift/extract/deposit condition. */
1935 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1939 if (strcmp (name
, "=") == 0)
1941 else if (strcmp (name
, "<") == 0)
1943 else if (strcasecmp (name
, "od") == 0)
1945 else if (strcasecmp (name
, "tr") == 0)
1947 else if (strcmp (name
, "<>") == 0)
1949 else if (strcmp (name
, ">=") == 0)
1951 else if (strcasecmp (name
, "ev") == 0)
1953 /* Handle movb,n. Put things back the way they were.
1954 This includes moving s back to where it started. */
1955 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1962 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1965 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1967 /* Handle bvb and bb conditions. */
1973 if (strncmp (s
, "<", 1) == 0)
1978 else if (strncmp (s
, ">=", 2) == 0)
1984 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1986 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1988 /* Handle a system control completer. */
1990 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
1998 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2000 /* Handle a nullification completer for branch instructions. */
2002 nullif
= pa_parse_nullif (&s
);
2003 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2005 /* Handle a nullification completer for copr and spop insns. */
2007 nullif
= pa_parse_nullif (&s
);
2008 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2010 /* Handle a 11 bit immediate at 31. */
2012 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2015 if (the_insn
.exp
.X_op
== O_constant
)
2017 num
= evaluate_absolute (&the_insn
);
2018 CHECK_FIELD (num
, 1023, -1024, 0);
2019 low_sign_unext (num
, 11, &num
);
2020 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2024 if (is_DP_relative (the_insn
.exp
))
2025 the_insn
.reloc
= R_HPPA_GOTOFF
;
2026 else if (is_PC_relative (the_insn
.exp
))
2027 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2029 the_insn
.reloc
= R_HPPA
;
2030 the_insn
.format
= 11;
2034 /* Handle a 14 bit immediate at 31. */
2036 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2039 if (the_insn
.exp
.X_op
== O_constant
)
2041 num
= evaluate_absolute (&the_insn
);
2042 CHECK_FIELD (num
, 8191, -8192, 0);
2043 low_sign_unext (num
, 14, &num
);
2044 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2048 if (is_DP_relative (the_insn
.exp
))
2049 the_insn
.reloc
= R_HPPA_GOTOFF
;
2050 else if (is_PC_relative (the_insn
.exp
))
2051 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2053 the_insn
.reloc
= R_HPPA
;
2054 the_insn
.format
= 14;
2058 /* Handle a 21 bit immediate at 31. */
2060 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2063 if (the_insn
.exp
.X_op
== O_constant
)
2065 num
= evaluate_absolute (&the_insn
);
2066 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2067 dis_assemble_21 (num
, &num
);
2068 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2072 if (is_DP_relative (the_insn
.exp
))
2073 the_insn
.reloc
= R_HPPA_GOTOFF
;
2074 else if (is_PC_relative (the_insn
.exp
))
2075 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2077 the_insn
.reloc
= R_HPPA
;
2078 the_insn
.format
= 21;
2082 /* Handle a 12 bit branch displacement. */
2084 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2088 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2090 unsigned int w1
, w
, result
;
2092 num
= evaluate_absolute (&the_insn
);
2095 as_bad ("Branch to unaligned address");
2098 CHECK_FIELD (num
, 8191, -8192, 0);
2099 sign_unext ((num
- 8) >> 2, 12, &result
);
2100 dis_assemble_12 (result
, &w1
, &w
);
2101 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2105 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2106 the_insn
.format
= 12;
2107 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2108 bzero (&last_call_desc
, sizeof (struct call_desc
));
2113 /* Handle a 17 bit branch displacement. */
2115 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2119 if (!the_insn
.exp
.X_add_symbol
2120 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2123 unsigned int w2
, w1
, w
, result
;
2125 num
= evaluate_absolute (&the_insn
);
2128 as_bad ("Branch to unaligned address");
2131 CHECK_FIELD (num
, 262143, -262144, 0);
2133 if (the_insn
.exp
.X_add_symbol
)
2136 sign_unext (num
>> 2, 17, &result
);
2137 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2138 INSERT_FIELD_AND_CONTINUE (opcode
,
2139 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2143 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2144 the_insn
.format
= 17;
2145 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2146 bzero (&last_call_desc
, sizeof (struct call_desc
));
2150 /* Handle an absolute 17 bit branch target. */
2152 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2156 if (!the_insn
.exp
.X_add_symbol
2157 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2160 unsigned int w2
, w1
, w
, result
;
2162 num
= evaluate_absolute (&the_insn
);
2165 as_bad ("Branch to unaligned address");
2168 CHECK_FIELD (num
, 262143, -262144, 0);
2170 if (the_insn
.exp
.X_add_symbol
)
2173 sign_unext (num
>> 2, 17, &result
);
2174 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2175 INSERT_FIELD_AND_CONTINUE (opcode
,
2176 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2180 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2181 the_insn
.format
= 17;
2185 /* Handle a 5 bit shift count at 26. */
2187 num
= pa_get_absolute_expression (&the_insn
, &s
);
2189 CHECK_FIELD (num
, 31, 0, 0);
2190 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2192 /* Handle a 5 bit bit position at 26. */
2194 num
= pa_get_absolute_expression (&the_insn
, &s
);
2196 CHECK_FIELD (num
, 31, 0, 0);
2197 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2199 /* Handle a 5 bit immediate at 10. */
2201 num
= pa_get_absolute_expression (&the_insn
, &s
);
2203 CHECK_FIELD (num
, 31, 0, 0);
2204 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2206 /* Handle a 13 bit immediate at 18. */
2208 num
= pa_get_absolute_expression (&the_insn
, &s
);
2210 CHECK_FIELD (num
, 8191, 0, 0);
2211 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2213 /* Handle a 26 bit immediate at 31. */
2215 num
= pa_get_absolute_expression (&the_insn
, &s
);
2217 CHECK_FIELD (num
, 671108864, 0, 0);
2218 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2220 /* Handle a 3 bit SFU identifier at 25. */
2223 as_bad ("Invalid SFU identifier");
2224 num
= pa_get_absolute_expression (&the_insn
, &s
);
2226 CHECK_FIELD (num
, 7, 0, 0);
2227 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2229 /* Handle a 20 bit SOP field for spop0. */
2231 num
= pa_get_absolute_expression (&the_insn
, &s
);
2233 CHECK_FIELD (num
, 1048575, 0, 0);
2234 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2235 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2237 /* Handle a 15bit SOP field for spop1. */
2239 num
= pa_get_absolute_expression (&the_insn
, &s
);
2241 CHECK_FIELD (num
, 32767, 0, 0);
2242 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2244 /* Handle a 10bit SOP field for spop3. */
2246 num
= pa_get_absolute_expression (&the_insn
, &s
);
2248 CHECK_FIELD (num
, 1023, 0, 0);
2249 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2250 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2252 /* Handle a 15 bit SOP field for spop2. */
2254 num
= pa_get_absolute_expression (&the_insn
, &s
);
2256 CHECK_FIELD (num
, 32767, 0, 0);
2257 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2258 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2260 /* Handle a 3-bit co-processor ID field. */
2263 as_bad ("Invalid COPR identifier");
2264 num
= pa_get_absolute_expression (&the_insn
, &s
);
2266 CHECK_FIELD (num
, 7, 0, 0);
2267 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2269 /* Handle a 22bit SOP field for copr. */
2271 num
= pa_get_absolute_expression (&the_insn
, &s
);
2273 CHECK_FIELD (num
, 4194303, 0, 0);
2274 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2275 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2277 /* Handle a source FP operand format completer. */
2279 flag
= pa_parse_fp_format (&s
);
2280 the_insn
.fpof1
= flag
;
2281 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2283 /* Handle a destination FP operand format completer. */
2285 /* pa_parse_format needs the ',' prefix. */
2287 flag
= pa_parse_fp_format (&s
);
2288 the_insn
.fpof2
= flag
;
2289 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2291 /* Handle FP compare conditions. */
2293 cond
= pa_parse_fp_cmp_cond (&s
);
2294 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2296 /* Handle L/R register halves like 't'. */
2299 struct pa_89_fp_reg_struct result
;
2301 pa_parse_number (&s
, &result
);
2302 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2303 opcode
|= result
.number_part
;
2305 /* 0x30 opcodes are FP arithmetic operation opcodes
2306 and need to be turned into 0x38 opcodes. This
2307 is not necessary for loads/stores. */
2308 if (need_89_opcode (&the_insn
, &result
)
2309 && ((opcode
& 0xfc000000) == 0x30000000))
2312 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2315 /* Handle L/R register halves like 'b'. */
2318 struct pa_89_fp_reg_struct result
;
2320 pa_parse_number (&s
, &result
);
2321 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2322 opcode
|= result
.number_part
<< 21;
2323 if (need_89_opcode (&the_insn
, &result
))
2325 opcode
|= (result
.l_r_select
& 1) << 7;
2331 /* Handle L/R register halves like 'x'. */
2334 struct pa_89_fp_reg_struct result
;
2336 pa_parse_number (&s
, &result
);
2337 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2338 opcode
|= (result
.number_part
& 0x1f) << 16;
2339 if (need_89_opcode (&the_insn
, &result
))
2341 opcode
|= (result
.l_r_select
& 1) << 12;
2347 /* Handle a 5 bit register field at 10. */
2350 struct pa_89_fp_reg_struct result
;
2352 pa_parse_number (&s
, &result
);
2353 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2354 if (the_insn
.fpof1
== SGL
)
2356 result
.number_part
&= 0xF;
2357 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2359 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2362 /* Handle a 5 bit register field at 15. */
2365 struct pa_89_fp_reg_struct result
;
2367 pa_parse_number (&s
, &result
);
2368 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2369 if (the_insn
.fpof1
== SGL
)
2371 result
.number_part
&= 0xF;
2372 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2374 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2377 /* Handle a 5 bit register field at 31. */
2380 struct pa_89_fp_reg_struct result
;
2382 pa_parse_number (&s
, &result
);
2383 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2384 if (the_insn
.fpof1
== SGL
)
2386 result
.number_part
&= 0xF;
2387 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2389 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2392 /* Handle a 5 bit register field at 20. */
2395 struct pa_89_fp_reg_struct result
;
2397 pa_parse_number (&s
, &result
);
2398 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2399 if (the_insn
.fpof1
== SGL
)
2401 result
.number_part
&= 0xF;
2402 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2404 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2407 /* Handle a 5 bit register field at 25. */
2410 struct pa_89_fp_reg_struct result
;
2412 pa_parse_number (&s
, &result
);
2413 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2414 if (the_insn
.fpof1
== SGL
)
2416 result
.number_part
&= 0xF;
2417 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2419 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2422 /* Handle a floating point operand format at 26.
2423 Only allows single and double precision. */
2425 flag
= pa_parse_fp_format (&s
);
2431 the_insn
.fpof1
= flag
;
2437 as_bad ("Invalid Floating Point Operand Format.");
2447 /* Check if the args matched. */
2450 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2451 && !strcmp (insn
->name
, insn
[1].name
))
2459 as_bad ("Invalid operands %s", error_message
);
2466 the_insn
.opcode
= opcode
;
2469 /* Turn a string in input_line_pointer into a floating point constant of type
2470 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2471 emitted is stored in *sizeP . An error message or NULL is returned. */
2473 #define MAX_LITTLENUMS 6
2476 md_atof (type
, litP
, sizeP
)
2482 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2483 LITTLENUM_TYPE
*wordP
;
2515 return "Bad call to MD_ATOF()";
2517 t
= atof_ieee (input_line_pointer
, type
, words
);
2519 input_line_pointer
= t
;
2520 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2521 for (wordP
= words
; prec
--;)
2523 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2524 litP
+= sizeof (LITTLENUM_TYPE
);
2529 /* Write out big-endian. */
2532 md_number_to_chars (buf
, val
, n
)
2537 number_to_chars_bigendian (buf
, val
, n
);
2540 /* Translate internal representation of relocation info to BFD target
2544 tc_gen_reloc (section
, fixp
)
2549 struct hppa_fix_struct
*hppa_fixp
;
2550 bfd_reloc_code_real_type code
;
2551 static arelent
*no_relocs
= NULL
;
2553 bfd_reloc_code_real_type
**codes
;
2557 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2558 if (fixp
->fx_addsy
== 0)
2560 assert (hppa_fixp
!= 0);
2561 assert (section
!= 0);
2563 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2564 assert (reloc
!= 0);
2566 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2567 codes
= (bfd_reloc_code_real_type
**) hppa_gen_reloc_type (stdoutput
,
2569 hppa_fixp
->fx_r_format
,
2570 hppa_fixp
->fx_r_field
);
2572 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2575 relocs
= (arelent
**)
2576 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2577 assert (relocs
!= 0);
2579 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2580 sizeof (arelent
) * n_relocs
);
2582 assert (reloc
!= 0);
2584 for (i
= 0; i
< n_relocs
; i
++)
2585 relocs
[i
] = &reloc
[i
];
2587 relocs
[n_relocs
] = NULL
;
2590 switch (fixp
->fx_r_type
)
2593 assert (n_relocs
== 1);
2597 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2598 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2599 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2600 reloc
->addend
= 0; /* default */
2602 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2604 /* Now, do any processing that is dependent on the relocation type. */
2607 case R_PARISC_DLTREL21L
:
2608 case R_PARISC_DLTREL14R
:
2609 case R_PARISC_DLTREL14F
:
2610 case R_PARISC_PLABEL32
:
2611 case R_PARISC_PLABEL21L
:
2612 case R_PARISC_PLABEL14R
:
2613 /* For plabel relocations, the addend of the
2614 relocation should be either 0 (no static link) or 2
2615 (static link required).
2617 FIXME: We always assume no static link!
2619 We also slam a zero addend into the DLT relative relocs;
2620 it doesn't make a lot of sense to use any addend since
2621 it gets you a different (eg unknown) DLT entry. */
2625 case R_PARISC_PCREL21L
:
2626 case R_PARISC_PCREL17R
:
2627 case R_PARISC_PCREL17F
:
2628 case R_PARISC_PCREL17C
:
2629 case R_PARISC_PCREL14R
:
2630 case R_PARISC_PCREL14F
:
2631 /* The constant is stored in the instruction. */
2632 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2635 reloc
->addend
= fixp
->fx_offset
;
2642 /* Walk over reach relocation returned by the BFD backend. */
2643 for (i
= 0; i
< n_relocs
; i
++)
2647 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2648 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2649 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2655 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2661 /* For plabel relocations, the addend of the
2662 relocation should be either 0 (no static link) or 2
2663 (static link required).
2665 FIXME: We always assume no static link!
2667 We also slam a zero addend into the DLT relative relocs;
2668 it doesn't make a lot of sense to use any addend since
2669 it gets you a different (eg unknown) DLT entry. */
2670 relocs
[i
]->addend
= 0;
2680 /* There is no symbol or addend associated with these fixups. */
2681 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2682 relocs
[i
]->addend
= 0;
2687 /* There is no symbol associated with these fixups. */
2688 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2689 relocs
[i
]->addend
= fixp
->fx_offset
;
2693 relocs
[i
]->addend
= fixp
->fx_offset
;
2701 /* Process any machine dependent frag types. */
2704 md_convert_frag (abfd
, sec
, fragP
)
2706 register asection
*sec
;
2707 register fragS
*fragP
;
2709 unsigned int address
;
2711 if (fragP
->fr_type
== rs_machine_dependent
)
2713 switch ((int) fragP
->fr_subtype
)
2716 fragP
->fr_type
= rs_fill
;
2717 know (fragP
->fr_var
== 1);
2718 know (fragP
->fr_next
);
2719 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2720 if (address
% fragP
->fr_offset
)
2723 fragP
->fr_next
->fr_address
2728 fragP
->fr_offset
= 0;
2734 /* Round up a section size to the appropriate boundary. */
2737 md_section_align (segment
, size
)
2741 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2742 int align2
= (1 << align
) - 1;
2744 return (size
+ align2
) & ~align2
;
2747 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2749 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2751 addressT from_addr
, to_addr
;
2755 fprintf (stderr
, "pa_create_short_jmp\n");
2759 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2761 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2763 addressT from_addr
, to_addr
;
2767 fprintf (stderr
, "pa_create_long_jump\n");
2771 /* Return the approximate size of a frag before relaxation has occurred. */
2773 md_estimate_size_before_relax (fragP
, segment
)
2774 register fragS
*fragP
;
2781 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2787 CONST
char *md_shortopts
= "";
2788 struct option md_longopts
[] = {
2789 {NULL
, no_argument
, NULL
, 0}
2791 size_t md_longopts_size
= sizeof(md_longopts
);
2794 md_parse_option (c
, arg
)
2802 md_show_usage (stream
)
2807 /* We have no need to default values of symbols. */
2810 md_undefined_symbol (name
)
2816 /* Parse an operand that is machine-specific.
2817 We just return without modifying the expression as we have nothing
2821 md_operand (expressionP
)
2822 expressionS
*expressionP
;
2826 /* Apply a fixup to an instruction. */
2829 md_apply_fix (fixP
, valp
)
2833 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2834 struct hppa_fix_struct
*hppa_fixP
;
2835 long new_val
, result
;
2836 unsigned int w1
, w2
, w
;
2838 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2839 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2840 never be "applied" (they are just markers). */
2842 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2843 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2847 /* There should have been an HPPA specific fixup associated
2848 with the GAS fixup. */
2851 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2852 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2854 /* If there is a symbol associated with this fixup, then it's something
2855 which will need a SOM relocation (except for some PC-relative relocs).
2856 In such cases we should treat the "val" or "addend" as zero since it
2857 will be added in as needed from fx_offset in tc_gen_reloc. */
2858 if ((fixP
->fx_addsy
!= NULL
2859 || fixP
->fx_r_type
== R_HPPA_NONE
)
2862 || hppa_fixP
->fx_r_field
== e_psel
2863 || hppa_fixP
->fx_r_field
== e_rpsel
2864 || hppa_fixP
->fx_r_field
== e_lpsel
2865 || hppa_fixP
->fx_r_field
== e_tsel
2866 || hppa_fixP
->fx_r_field
== e_rtsel
2867 || hppa_fixP
->fx_r_field
== e_ltsel
2870 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2872 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2874 /* Handle pc-relative exceptions from above. */
2875 #define stub_needed(CALLER, CALLEE) \
2876 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2877 if ((fmt
== 12 || fmt
== 17)
2880 && !stub_needed (((obj_symbol_type
*)
2881 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2882 hppa_fixP
->fx_arg_reloc
)
2883 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2885 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2887 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2892 /* Handle all opcodes with the 'j' operand type. */
2894 CHECK_FIELD (new_val
, 8191, -8192, 0);
2896 /* Mask off 14 bits to be changed. */
2897 bfd_put_32 (stdoutput
,
2898 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2900 low_sign_unext (new_val
, 14, &result
);
2903 /* Handle all opcodes with the 'k' operand type. */
2905 CHECK_FIELD (new_val
, 2097152, 0, 0);
2907 /* Mask off 21 bits to be changed. */
2908 bfd_put_32 (stdoutput
,
2909 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2911 dis_assemble_21 (new_val
, &result
);
2914 /* Handle all the opcodes with the 'i' operand type. */
2916 CHECK_FIELD (new_val
, 1023, -1023, 0);
2918 /* Mask off 11 bits to be changed. */
2919 bfd_put_32 (stdoutput
,
2920 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2922 low_sign_unext (new_val
, 11, &result
);
2925 /* Handle all the opcodes with the 'w' operand type. */
2927 CHECK_FIELD (new_val
, 8191, -8192, 0)
2929 /* Mask off 11 bits to be changed. */
2930 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2931 bfd_put_32 (stdoutput
,
2932 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2935 dis_assemble_12 (result
, &w1
, &w
);
2936 result
= ((w1
<< 2) | w
);
2939 /* Handle some of the opcodes with the 'W' operand type. */
2941 CHECK_FIELD (new_val
, 262143, -262144, 0);
2943 /* Mask off 17 bits to be changed. */
2944 bfd_put_32 (stdoutput
,
2945 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
2947 sign_unext ((new_val
- 8) >> 2, 17, &result
);
2948 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2949 result
= ((w2
<< 2) | (w1
<< 16) | w
);
2954 bfd_put_32 (stdoutput
, new_val
, buf
);
2958 as_bad ("Unknown relocation encountered in md_apply_fix.");
2962 /* Insert the relocation. */
2963 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
2968 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
2969 (unsigned int) fixP
, fixP
->fx_r_type
);
2974 /* Exactly what point is a PC-relative offset relative TO?
2975 On the PA, they're relative to the address of the offset. */
2978 md_pcrel_from (fixP
)
2981 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
2984 /* Return nonzero if the input line pointer is at the end of
2988 is_end_of_statement ()
2990 return ((*input_line_pointer
== '\n')
2991 || (*input_line_pointer
== ';')
2992 || (*input_line_pointer
== '!'));
2995 /* Read a number from S. The number might come in one of many forms,
2996 the most common will be a hex or decimal constant, but it could be
2997 a pre-defined register (Yuk!), or an absolute symbol.
2999 Return a number or -1 for failure.
3001 When parsing PA-89 FP register numbers RESULT will be
3002 the address of a structure to return information about
3003 L/R half of FP registers, store results there as appropriate.
3005 pa_parse_number can not handle negative constants and will fail
3006 horribly if it is passed such a constant. */
3009 pa_parse_number (s
, result
)
3011 struct pa_89_fp_reg_struct
*result
;
3020 /* Skip whitespace before the number. */
3021 while (*p
== ' ' || *p
== '\t')
3024 /* Store info in RESULT if requested by caller. */
3027 result
->number_part
= -1;
3028 result
->l_r_select
= -1;
3034 /* Looks like a number. */
3037 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3039 /* The number is specified in hex. */
3041 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3042 || ((*p
>= 'A') && (*p
<= 'F')))
3045 num
= num
* 16 + *p
- '0';
3046 else if (*p
>= 'a' && *p
<= 'f')
3047 num
= num
* 16 + *p
- 'a' + 10;
3049 num
= num
* 16 + *p
- 'A' + 10;
3055 /* The number is specified in decimal. */
3056 while (isdigit (*p
))
3058 num
= num
* 10 + *p
- '0';
3063 /* Store info in RESULT if requested by the caller. */
3066 result
->number_part
= num
;
3068 if (IS_R_SELECT (p
))
3070 result
->l_r_select
= 1;
3073 else if (IS_L_SELECT (p
))
3075 result
->l_r_select
= 0;
3079 result
->l_r_select
= 0;
3084 /* The number might be a predefined register. */
3089 /* Tege hack: Special case for general registers as the general
3090 code makes a binary search with case translation, and is VERY
3095 if (*p
== 'e' && *(p
+ 1) == 't'
3096 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3099 num
= *p
- '0' + 28;
3107 else if (!isdigit (*p
))
3110 as_bad ("Undefined register: '%s'.", name
);
3116 num
= num
* 10 + *p
++ - '0';
3117 while (isdigit (*p
));
3122 /* Do a normal register search. */
3123 while (is_part_of_name (c
))
3129 status
= reg_name_search (name
);
3135 as_bad ("Undefined register: '%s'.", name
);
3141 /* Store info in RESULT if requested by caller. */
3144 result
->number_part
= num
;
3145 if (IS_R_SELECT (p
- 1))
3146 result
->l_r_select
= 1;
3147 else if (IS_L_SELECT (p
- 1))
3148 result
->l_r_select
= 0;
3150 result
->l_r_select
= 0;
3155 /* And finally, it could be a symbol in the absolute section which
3156 is effectively a constant. */
3160 while (is_part_of_name (c
))
3166 if ((sym
= symbol_find (name
)) != NULL
)
3168 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3169 num
= S_GET_VALUE (sym
);
3173 as_bad ("Non-absolute symbol: '%s'.", name
);
3179 /* There is where we'd come for an undefined symbol
3180 or for an empty string. For an empty string we
3181 will return zero. That's a concession made for
3182 compatability with the braindamaged HP assemblers. */
3188 as_bad ("Undefined absolute constant: '%s'.", name
);
3194 /* Store info in RESULT if requested by caller. */
3197 result
->number_part
= num
;
3198 if (IS_R_SELECT (p
- 1))
3199 result
->l_r_select
= 1;
3200 else if (IS_L_SELECT (p
- 1))
3201 result
->l_r_select
= 0;
3203 result
->l_r_select
= 0;
3211 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3213 /* Given NAME, find the register number associated with that name, return
3214 the integer value associated with the given name or -1 on failure. */
3217 reg_name_search (name
)
3220 int middle
, low
, high
;
3224 high
= REG_NAME_CNT
- 1;
3228 middle
= (low
+ high
) / 2;
3229 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3235 return pre_defined_registers
[middle
].value
;
3237 while (low
<= high
);
3243 /* Return nonzero if the given INSN and L/R information will require
3244 a new PA-89 opcode. */
3247 need_89_opcode (insn
, result
)
3249 struct pa_89_fp_reg_struct
*result
;
3251 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3257 /* Parse a condition for a fcmp instruction. Return the numerical
3258 code associated with the condition. */
3261 pa_parse_fp_cmp_cond (s
)
3268 for (i
= 0; i
< 32; i
++)
3270 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3271 strlen (fp_cond_map
[i
].string
)) == 0)
3273 cond
= fp_cond_map
[i
].cond
;
3274 *s
+= strlen (fp_cond_map
[i
].string
);
3275 /* If not a complete match, back up the input string and
3277 if (**s
!= ' ' && **s
!= '\t')
3279 *s
-= strlen (fp_cond_map
[i
].string
);
3282 while (**s
== ' ' || **s
== '\t')
3288 as_bad ("Invalid FP Compare Condition: %s", *s
);
3290 /* Advance over the bogus completer. */
3291 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3297 /* Parse an FP operand format completer returning the completer
3300 static fp_operand_format
3301 pa_parse_fp_format (s
)
3310 if (strncasecmp (*s
, "sgl", 3) == 0)
3315 else if (strncasecmp (*s
, "dbl", 3) == 0)
3320 else if (strncasecmp (*s
, "quad", 4) == 0)
3327 format
= ILLEGAL_FMT
;
3328 as_bad ("Invalid FP Operand Format: %3s", *s
);
3335 /* Convert from a selector string into a selector type. */
3338 pa_chk_field_selector (str
)
3341 int middle
, low
, high
;
3345 /* Read past any whitespace. */
3346 /* FIXME: should we read past newlines and formfeeds??? */
3347 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3350 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3351 name
[0] = tolower ((*str
)[0]),
3353 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3354 name
[0] = tolower ((*str
)[0]),
3355 name
[1] = tolower ((*str
)[1]),
3361 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3365 middle
= (low
+ high
) / 2;
3366 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3373 *str
+= strlen (name
) + 1;
3374 return selector_table
[middle
].field_selector
;
3377 while (low
<= high
);
3382 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3385 get_expression (str
)
3391 save_in
= input_line_pointer
;
3392 input_line_pointer
= str
;
3393 seg
= expression (&the_insn
.exp
);
3394 if (!(seg
== absolute_section
3395 || seg
== undefined_section
3396 || SEG_NORMAL (seg
)))
3398 as_warn ("Bad segment in expression.");
3399 expr_end
= input_line_pointer
;
3400 input_line_pointer
= save_in
;
3403 expr_end
= input_line_pointer
;
3404 input_line_pointer
= save_in
;
3408 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3410 pa_get_absolute_expression (insn
, strp
)
3416 insn
->field_selector
= pa_chk_field_selector (strp
);
3417 save_in
= input_line_pointer
;
3418 input_line_pointer
= *strp
;
3419 expression (&insn
->exp
);
3420 if (insn
->exp
.X_op
!= O_constant
)
3422 as_bad ("Bad segment (should be absolute).");
3423 expr_end
= input_line_pointer
;
3424 input_line_pointer
= save_in
;
3427 expr_end
= input_line_pointer
;
3428 input_line_pointer
= save_in
;
3429 return evaluate_absolute (insn
);
3432 /* Evaluate an absolute expression EXP which may be modified by
3433 the selector FIELD_SELECTOR. Return the value of the expression. */
3435 evaluate_absolute (insn
)
3440 int field_selector
= insn
->field_selector
;
3443 value
= exp
.X_add_number
;
3445 switch (field_selector
)
3451 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3453 if (value
& 0x00000400)
3455 value
= (value
& 0xfffff800) >> 11;
3458 /* Sign extend from bit 21. */
3460 if (value
& 0x00000400)
3461 value
|= 0xfffff800;
3466 /* Arithmetic shift right 11 bits. */
3468 value
= (value
& 0xfffff800) >> 11;
3471 /* Set bits 0-20 to zero. */
3473 value
= value
& 0x7ff;
3476 /* Add 0x800 and arithmetic shift right 11 bits. */
3479 value
= (value
& 0xfffff800) >> 11;
3482 /* Set bitgs 0-21 to one. */
3484 value
|= 0xfffff800;
3487 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3489 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3493 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3498 BAD_CASE (field_selector
);
3504 /* Given an argument location specification return the associated
3505 argument location number. */
3508 pa_build_arg_reloc (type_name
)
3512 if (strncasecmp (type_name
, "no", 2) == 0)
3514 if (strncasecmp (type_name
, "gr", 2) == 0)
3516 else if (strncasecmp (type_name
, "fr", 2) == 0)
3518 else if (strncasecmp (type_name
, "fu", 2) == 0)
3521 as_bad ("Invalid argument location: %s\n", type_name
);
3526 /* Encode and return an argument relocation specification for
3527 the given register in the location specified by arg_reloc. */
3530 pa_align_arg_reloc (reg
, arg_reloc
)
3532 unsigned int arg_reloc
;
3534 unsigned int new_reloc
;
3536 new_reloc
= arg_reloc
;
3552 as_bad ("Invalid argument description: %d", reg
);
3558 /* Parse a PA nullification completer (,n). Return nonzero if the
3559 completer was found; return zero if no completer was found. */
3571 if (strncasecmp (*s
, "n", 1) == 0)
3575 as_bad ("Invalid Nullification: (%c)", **s
);
3584 /* Parse a non-negated compare/subtract completer returning the
3585 number (for encoding in instrutions) of the given completer.
3587 ISBRANCH specifies whether or not this is parsing a condition
3588 completer for a branch (vs a nullification completer for a
3589 computational instruction. */
3592 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3597 char *name
= *s
+ 1;
3605 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3609 if (strcmp (name
, "=") == 0)
3613 else if (strcmp (name
, "<") == 0)
3617 else if (strcmp (name
, "<=") == 0)
3621 else if (strcmp (name
, "<<") == 0)
3625 else if (strcmp (name
, "<<=") == 0)
3629 else if (strcasecmp (name
, "sv") == 0)
3633 else if (strcasecmp (name
, "od") == 0)
3637 /* If we have something like addb,n then there is no condition
3639 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3650 /* Reset pointers if this was really a ,n for a branch instruction. */
3651 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3657 /* Parse a negated compare/subtract completer returning the
3658 number (for encoding in instrutions) of the given completer.
3660 ISBRANCH specifies whether or not this is parsing a condition
3661 completer for a branch (vs a nullification completer for a
3662 computational instruction. */
3665 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3670 char *name
= *s
+ 1;
3678 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3682 if (strcasecmp (name
, "tr") == 0)
3686 else if (strcmp (name
, "<>") == 0)
3690 else if (strcmp (name
, ">=") == 0)
3694 else if (strcmp (name
, ">") == 0)
3698 else if (strcmp (name
, ">>=") == 0)
3702 else if (strcmp (name
, ">>") == 0)
3706 else if (strcasecmp (name
, "nsv") == 0)
3710 else if (strcasecmp (name
, "ev") == 0)
3714 /* If we have something like addb,n then there is no condition
3716 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3727 /* Reset pointers if this was really a ,n for a branch instruction. */
3728 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3734 /* Parse a non-negated addition completer returning the number
3735 (for encoding in instrutions) of the given completer.
3737 ISBRANCH specifies whether or not this is parsing a condition
3738 completer for a branch (vs a nullification completer for a
3739 computational instruction. */
3742 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3747 char *name
= *s
+ 1;
3755 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3759 if (strcmp (name
, "=") == 0)
3763 else if (strcmp (name
, "<") == 0)
3767 else if (strcmp (name
, "<=") == 0)
3771 else if (strcasecmp (name
, "nuv") == 0)
3775 else if (strcasecmp (name
, "znv") == 0)
3779 else if (strcasecmp (name
, "sv") == 0)
3783 else if (strcasecmp (name
, "od") == 0)
3787 /* If we have something like addb,n then there is no condition
3789 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3800 /* Reset pointers if this was really a ,n for a branch instruction. */
3801 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3807 /* Parse a negated addition completer returning the number
3808 (for encoding in instrutions) of the given completer.
3810 ISBRANCH specifies whether or not this is parsing a condition
3811 completer for a branch (vs a nullification completer for a
3812 computational instruction. */
3815 pa_parse_neg_add_cmpltr (s
, isbranch
)
3820 char *name
= *s
+ 1;
3828 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3832 if (strcasecmp (name
, "tr") == 0)
3836 else if (strcmp (name
, "<>") == 0)
3840 else if (strcmp (name
, ">=") == 0)
3844 else if (strcmp (name
, ">") == 0)
3848 else if (strcasecmp (name
, "uv") == 0)
3852 else if (strcasecmp (name
, "vnz") == 0)
3856 else if (strcasecmp (name
, "nsv") == 0)
3860 else if (strcasecmp (name
, "ev") == 0)
3864 /* If we have something like addb,n then there is no condition
3866 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3877 /* Reset pointers if this was really a ,n for a branch instruction. */
3878 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3884 /* Handle an alignment directive. Special so that we can update the
3885 alignment of the subspace if necessary. */
3889 /* We must have a valid space and subspace. */
3890 pa_check_current_space_and_subspace ();
3892 /* Let the generic gas code do most of the work. */
3893 s_align_bytes (bytes
);
3895 /* If bytes is a power of 2, then update the current subspace's
3896 alignment if necessary. */
3897 if (log2 (bytes
) != -1)
3898 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
3901 /* Handle a .BLOCK type pseudo-op. */
3909 unsigned int temp_size
;
3912 /* We must have a valid space and subspace. */
3913 pa_check_current_space_and_subspace ();
3915 temp_size
= get_absolute_expression ();
3917 /* Always fill with zeros, that's what the HP assembler does. */
3920 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3921 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3922 bzero (p
, temp_size
);
3924 /* Convert 2 bytes at a time. */
3926 for (i
= 0; i
< temp_size
; i
+= 2)
3928 md_number_to_chars (p
+ i
,
3930 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3933 pa_undefine_label ();
3934 demand_empty_rest_of_line ();
3937 /* Handle a .CALL pseudo-op. This involves storing away information
3938 about where arguments are to be found so the linker can detect
3939 (and correct) argument location mismatches between caller and callee. */
3945 /* We must have a valid space and subspace. */
3946 pa_check_current_space_and_subspace ();
3948 pa_call_args (&last_call_desc
);
3949 demand_empty_rest_of_line ();
3952 /* Do the dirty work of building a call descriptor which describes
3953 where the caller placed arguments to a function call. */
3956 pa_call_args (call_desc
)
3957 struct call_desc
*call_desc
;
3960 unsigned int temp
, arg_reloc
;
3962 while (!is_end_of_statement ())
3964 name
= input_line_pointer
;
3965 c
= get_symbol_end ();
3966 /* Process a source argument. */
3967 if ((strncasecmp (name
, "argw", 4) == 0))
3969 temp
= atoi (name
+ 4);
3970 p
= input_line_pointer
;
3972 input_line_pointer
++;
3973 name
= input_line_pointer
;
3974 c
= get_symbol_end ();
3975 arg_reloc
= pa_build_arg_reloc (name
);
3976 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
3978 /* Process a return value. */
3979 else if ((strncasecmp (name
, "rtnval", 6) == 0))
3981 p
= input_line_pointer
;
3983 input_line_pointer
++;
3984 name
= input_line_pointer
;
3985 c
= get_symbol_end ();
3986 arg_reloc
= pa_build_arg_reloc (name
);
3987 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
3991 as_bad ("Invalid .CALL argument: %s", name
);
3993 p
= input_line_pointer
;
3995 if (!is_end_of_statement ())
3996 input_line_pointer
++;
4000 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4003 is_same_frag (frag1
, frag2
)
4010 else if (frag2
== NULL
)
4012 else if (frag1
== frag2
)
4014 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4015 return (is_same_frag (frag1
, frag2
->fr_next
));
4021 /* Build an entry in the UNWIND subspace from the given function
4022 attributes in CALL_INFO. This is not needed for SOM as using
4023 R_ENTRY and R_EXIT relocations allow the linker to handle building
4024 of the unwind spaces. */
4027 pa_build_unwind_subspace (call_info
)
4028 struct call_info
*call_info
;
4031 asection
*seg
, *save_seg
;
4032 subsegT subseg
, save_subseg
;
4036 /* Get into the right seg/subseg. This may involve creating
4037 the seg the first time through. Make sure to have the
4038 old seg/subseg so that we can reset things when we are done. */
4039 subseg
= SUBSEG_UNWIND
;
4040 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4041 if (seg
== ASEC_NULL
)
4043 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4044 bfd_set_section_flags (stdoutput
, seg
,
4045 SEC_READONLY
| SEC_HAS_CONTENTS
4046 | SEC_LOAD
| SEC_RELOC
);
4050 save_subseg
= now_subseg
;
4051 subseg_set (seg
, subseg
);
4054 /* Get some space to hold relocation information for the unwind
4058 /* Relocation info. for start offset of the function. */
4059 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4060 call_info
->start_symbol
, (offsetT
) 0,
4061 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4065 /* Relocation info. for end offset of the function. */
4066 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4067 call_info
->start_symbol
,
4068 call_info
->function_size
,
4069 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4072 unwind
= (char *) &call_info
->ci_unwind
;
4073 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4077 FRAG_APPEND_1_CHAR (c
);
4081 /* Return back to the original segment/subsegment. */
4082 subseg_set (save_seg
, save_subseg
);
4086 /* Process a .CALLINFO pseudo-op. This information is used later
4087 to build unwind descriptors and maybe one day to support
4088 .ENTER and .LEAVE. */
4091 pa_callinfo (unused
)
4097 /* We must have a valid space and subspace. */
4098 pa_check_current_space_and_subspace ();
4100 /* .CALLINFO must appear within a procedure definition. */
4101 if (!within_procedure
)
4102 as_bad (".callinfo is not within a procedure definition");
4104 /* Mark the fact that we found the .CALLINFO for the
4105 current procedure. */
4106 callinfo_found
= TRUE
;
4108 /* Iterate over the .CALLINFO arguments. */
4109 while (!is_end_of_statement ())
4111 name
= input_line_pointer
;
4112 c
= get_symbol_end ();
4113 /* Frame size specification. */
4114 if ((strncasecmp (name
, "frame", 5) == 0))
4116 p
= input_line_pointer
;
4118 input_line_pointer
++;
4119 temp
= get_absolute_expression ();
4120 if ((temp
& 0x3) != 0)
4122 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4126 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4127 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4130 /* Entry register (GR, GR and SR) specifications. */
4131 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4133 p
= input_line_pointer
;
4135 input_line_pointer
++;
4136 temp
= get_absolute_expression ();
4137 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4138 even though %r19 is caller saved. I think this is a bug in
4139 the HP assembler, and we are not going to emulate it. */
4140 if (temp
< 3 || temp
> 18)
4141 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4142 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4144 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4146 p
= input_line_pointer
;
4148 input_line_pointer
++;
4149 temp
= get_absolute_expression ();
4150 /* Similarly the HP assembler takes 31 as the high bound even
4151 though %fr21 is the last callee saved floating point register. */
4152 if (temp
< 12 || temp
> 21)
4153 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4154 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4156 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4158 p
= input_line_pointer
;
4160 input_line_pointer
++;
4161 temp
= get_absolute_expression ();
4163 as_bad ("Value for ENTRY_SR must be 3\n");
4165 /* Note whether or not this function performs any calls. */
4166 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4167 (strncasecmp (name
, "caller", 6) == 0))
4169 p
= input_line_pointer
;
4172 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4174 p
= input_line_pointer
;
4177 /* Should RP be saved into the stack. */
4178 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4180 p
= input_line_pointer
;
4182 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4184 /* Likewise for SP. */
4185 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4187 p
= input_line_pointer
;
4189 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4191 /* Is this an unwindable procedure. If so mark it so
4192 in the unwind descriptor. */
4193 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4195 p
= input_line_pointer
;
4197 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4199 /* Is this an interrupt routine. If so mark it in the
4200 unwind descriptor. */
4201 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4203 p
= input_line_pointer
;
4205 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4207 /* Is this a millicode routine. "millicode" isn't in my
4208 assembler manual, but my copy is old. The HP assembler
4209 accepts it, and there's a place in the unwind descriptor
4210 to drop the information, so we'll accept it too. */
4211 else if ((strncasecmp (name
, "millicode", 9) == 0))
4213 p
= input_line_pointer
;
4215 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4219 as_bad ("Invalid .CALLINFO argument: %s", name
);
4220 *input_line_pointer
= c
;
4222 if (!is_end_of_statement ())
4223 input_line_pointer
++;
4226 demand_empty_rest_of_line ();
4229 /* Switch into the code subspace. */
4235 current_space
= is_defined_space ("$TEXT$");
4237 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
4239 pa_undefine_label ();
4242 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4243 the .comm pseudo-op has the following symtax:
4245 <label> .comm <length>
4247 where <label> is optional and is a symbol whose address will be the start of
4248 a block of memory <length> bytes long. <length> must be an absolute
4249 expression. <length> bytes will be allocated in the current space
4258 label_symbol_struct
*label_symbol
= pa_get_label ();
4261 symbol
= label_symbol
->lss_label
;
4266 size
= get_absolute_expression ();
4270 /* It is incorrect to check S_IS_DEFINED at this point as
4271 the symbol will *always* be defined. FIXME. How to
4272 correctly determine when this label really as been
4274 if (S_GET_VALUE (symbol
))
4276 if (S_GET_VALUE (symbol
) != size
)
4278 as_warn ("Length of .comm \"%s\" is already %ld. Not changed.",
4279 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4285 S_SET_VALUE (symbol
, size
);
4286 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4287 S_SET_EXTERNAL (symbol
);
4289 /* colon() has already set the frag to the current location in the
4290 $BSS$ subspace; we need to reset the fragment to the zero address
4292 symbol
->sy_frag
= &zero_address_frag
;
4295 demand_empty_rest_of_line ();
4298 /* Process a .END pseudo-op. */
4304 demand_empty_rest_of_line ();
4307 /* Process a .ENTER pseudo-op. This is not supported. */
4312 /* We must have a valid space and subspace. */
4313 pa_check_current_space_and_subspace ();
4318 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4324 /* We must have a valid space and subspace. */
4325 pa_check_current_space_and_subspace ();
4327 if (!within_procedure
)
4328 as_bad ("Misplaced .entry. Ignored.");
4331 if (!callinfo_found
)
4332 as_bad ("Missing .callinfo.");
4334 demand_empty_rest_of_line ();
4335 within_entry_exit
= TRUE
;
4338 /* SOM defers building of unwind descriptors until the link phase.
4339 The assembler is responsible for creating an R_ENTRY relocation
4340 to mark the beginning of a region and hold the unwind bits, and
4341 for creating an R_EXIT relocation to mark the end of the region.
4343 FIXME. ELF should be using the same conventions! The problem
4344 is an unwind requires too much relocation space. Hmmm. Maybe
4345 if we split the unwind bits up between the relocations which
4346 denote the entry and exit points. */
4347 if (last_call_info
->start_symbol
!= NULL
)
4349 char *where
= frag_more (0);
4351 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4352 NULL
, (offsetT
) 0, NULL
,
4353 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4354 (int *) &last_call_info
->ci_unwind
.descriptor
);
4359 /* Handle a .EQU pseudo-op. */
4365 label_symbol_struct
*label_symbol
= pa_get_label ();
4370 symbol
= label_symbol
->lss_label
;
4372 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4374 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4375 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4380 as_bad (".REG must use a label");
4382 as_bad (".EQU must use a label");
4385 pa_undefine_label ();
4386 demand_empty_rest_of_line ();
4389 /* Helper function. Does processing for the end of a function. This
4390 usually involves creating some relocations or building special
4391 symbols to mark the end of the function. */
4398 where
= frag_more (0);
4400 last_call_info
->function_size
4401 = where
- frag_now
->fr_literal
- S_GET_VALUE (last_call_info
->start_symbol
);
4404 /* Mark the end of the function, stuff away the location of the frag
4405 for the end of the function, and finally call pa_build_unwind_subspace
4406 to add an entry in the unwind table. */
4407 pa_build_unwind_subspace (last_call_info
);
4409 /* SOM defers building of unwind descriptors until the link phase.
4410 The assembler is responsible for creating an R_ENTRY relocation
4411 to mark the beginning of a region and hold the unwind bits, and
4412 for creating an R_EXIT relocation to mark the end of the region.
4414 FIXME. ELF should be using the same conventions! The problem
4415 is an unwind requires too much relocation space. Hmmm. Maybe
4416 if we split the unwind bits up between the relocations which
4417 denote the entry and exit points. */
4418 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4420 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4421 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4425 /* Process a .EXIT pseudo-op. */
4431 /* We must have a valid space and subspace. */
4432 pa_check_current_space_and_subspace ();
4434 if (!within_procedure
)
4435 as_bad (".EXIT must appear within a procedure");
4438 if (!callinfo_found
)
4439 as_bad ("Missing .callinfo");
4442 if (!within_entry_exit
)
4443 as_bad ("No .ENTRY for this .EXIT");
4446 within_entry_exit
= FALSE
;
4451 demand_empty_rest_of_line ();
4454 /* Process a .EXPORT directive. This makes functions external
4455 and provides information such as argument relocation entries
4465 name
= input_line_pointer
;
4466 c
= get_symbol_end ();
4467 /* Make sure the given symbol exists. */
4468 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4470 as_bad ("Cannot define export symbol: %s\n", name
);
4471 p
= input_line_pointer
;
4473 input_line_pointer
++;
4477 /* OK. Set the external bits and process argument relocations. */
4478 S_SET_EXTERNAL (symbol
);
4479 p
= input_line_pointer
;
4481 if (!is_end_of_statement ())
4483 input_line_pointer
++;
4484 pa_type_args (symbol
, 1);
4488 demand_empty_rest_of_line ();
4491 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4494 pa_type_args (symbolP
, is_export
)
4499 unsigned int temp
, arg_reloc
;
4500 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4501 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4503 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4506 input_line_pointer
+= 8;
4507 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4508 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4509 type
= SYMBOL_TYPE_ABSOLUTE
;
4511 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4513 input_line_pointer
+= 4;
4514 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4515 instead one should be IMPORTing/EXPORTing ENTRY types.
4517 Complain if one tries to EXPORT a CODE type since that's never
4518 done. Both GCC and HP C still try to IMPORT CODE types, so
4519 silently fix them to be ENTRY types. */
4520 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4523 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4525 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4526 type
= SYMBOL_TYPE_ENTRY
;
4530 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4531 type
= SYMBOL_TYPE_CODE
;
4534 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4536 input_line_pointer
+= 4;
4537 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4538 type
= SYMBOL_TYPE_DATA
;
4540 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4542 input_line_pointer
+= 5;
4543 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4544 type
= SYMBOL_TYPE_ENTRY
;
4546 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4548 input_line_pointer
+= 9;
4549 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4550 type
= SYMBOL_TYPE_MILLICODE
;
4552 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4554 input_line_pointer
+= 6;
4555 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4556 type
= SYMBOL_TYPE_PLABEL
;
4558 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4560 input_line_pointer
+= 8;
4561 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4562 type
= SYMBOL_TYPE_PRI_PROG
;
4564 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4566 input_line_pointer
+= 8;
4567 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4568 type
= SYMBOL_TYPE_SEC_PROG
;
4571 /* SOM requires much more information about symbol types
4572 than BFD understands. This is how we get this information
4573 to the SOM BFD backend. */
4574 #ifdef obj_set_symbol_type
4575 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4578 /* Now that the type of the exported symbol has been handled,
4579 handle any argument relocation information. */
4580 while (!is_end_of_statement ())
4582 if (*input_line_pointer
== ',')
4583 input_line_pointer
++;
4584 name
= input_line_pointer
;
4585 c
= get_symbol_end ();
4586 /* Argument sources. */
4587 if ((strncasecmp (name
, "argw", 4) == 0))
4589 p
= input_line_pointer
;
4591 input_line_pointer
++;
4592 temp
= atoi (name
+ 4);
4593 name
= input_line_pointer
;
4594 c
= get_symbol_end ();
4595 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4596 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4597 *input_line_pointer
= c
;
4599 /* The return value. */
4600 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4602 p
= input_line_pointer
;
4604 input_line_pointer
++;
4605 name
= input_line_pointer
;
4606 c
= get_symbol_end ();
4607 arg_reloc
= pa_build_arg_reloc (name
);
4608 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4609 *input_line_pointer
= c
;
4611 /* Privelege level. */
4612 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4614 p
= input_line_pointer
;
4616 input_line_pointer
++;
4617 temp
= atoi (input_line_pointer
);
4618 c
= get_symbol_end ();
4619 *input_line_pointer
= c
;
4623 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4624 p
= input_line_pointer
;
4627 if (!is_end_of_statement ())
4628 input_line_pointer
++;
4632 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4633 assembly file must either be defined in the assembly file, or
4634 explicitly IMPORTED from another. */
4643 name
= input_line_pointer
;
4644 c
= get_symbol_end ();
4646 symbol
= symbol_find (name
);
4647 /* Ugh. We might be importing a symbol defined earlier in the file,
4648 in which case all the code below will really screw things up
4649 (set the wrong segment, symbol flags & type, etc). */
4650 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4652 symbol
= symbol_find_or_make (name
);
4653 p
= input_line_pointer
;
4656 if (!is_end_of_statement ())
4658 input_line_pointer
++;
4659 pa_type_args (symbol
, 0);
4663 /* Sigh. To be compatable with the HP assembler and to help
4664 poorly written assembly code, we assign a type based on
4665 the the current segment. Note only BSF_FUNCTION really
4666 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4667 if (now_seg
== text_section
)
4668 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4670 /* If the section is undefined, then the symbol is undefined
4671 Since this is an import, leave the section undefined. */
4672 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4677 /* The symbol was already defined. Just eat everything up to
4678 the end of the current statement. */
4679 while (!is_end_of_statement ())
4680 input_line_pointer
++;
4683 demand_empty_rest_of_line ();
4686 /* Handle a .LABEL pseudo-op. */
4694 name
= input_line_pointer
;
4695 c
= get_symbol_end ();
4697 if (strlen (name
) > 0)
4700 p
= input_line_pointer
;
4705 as_warn ("Missing label name on .LABEL");
4708 if (!is_end_of_statement ())
4710 as_warn ("extra .LABEL arguments ignored.");
4711 ignore_rest_of_line ();
4713 demand_empty_rest_of_line ();
4716 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4722 /* We must have a valid space and subspace. */
4723 pa_check_current_space_and_subspace ();
4728 /* Handle a .ORIGIN pseudo-op. */
4734 /* We must have a valid space and subspace. */
4735 pa_check_current_space_and_subspace ();
4738 pa_undefine_label ();
4741 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4742 is for static functions. FIXME. Should share more code with .EXPORT. */
4751 name
= input_line_pointer
;
4752 c
= get_symbol_end ();
4754 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4756 as_bad ("Cannot define static symbol: %s\n", name
);
4757 p
= input_line_pointer
;
4759 input_line_pointer
++;
4763 S_CLEAR_EXTERNAL (symbol
);
4764 p
= input_line_pointer
;
4766 if (!is_end_of_statement ())
4768 input_line_pointer
++;
4769 pa_type_args (symbol
, 0);
4773 demand_empty_rest_of_line ();
4776 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4777 of a procedure from a syntatical point of view. */
4783 struct call_info
*call_info
;
4785 /* We must have a valid space and subspace. */
4786 pa_check_current_space_and_subspace ();
4788 if (within_procedure
)
4789 as_fatal ("Nested procedures");
4791 /* Reset global variables for new procedure. */
4792 callinfo_found
= FALSE
;
4793 within_procedure
= TRUE
;
4795 /* Create another call_info structure. */
4796 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4799 as_fatal ("Cannot allocate unwind descriptor\n");
4801 bzero (call_info
, sizeof (struct call_info
));
4803 call_info
->ci_next
= NULL
;
4805 if (call_info_root
== NULL
)
4807 call_info_root
= call_info
;
4808 last_call_info
= call_info
;
4812 last_call_info
->ci_next
= call_info
;
4813 last_call_info
= call_info
;
4816 /* set up defaults on call_info structure */
4818 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4819 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4820 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4822 /* If we got a .PROC pseudo-op, we know that the function is defined
4823 locally. Make sure it gets into the symbol table. */
4825 label_symbol_struct
*label_symbol
= pa_get_label ();
4829 if (label_symbol
->lss_label
)
4831 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4832 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4835 as_bad ("Missing function name for .PROC (corrupted label chain)");
4838 last_call_info
->start_symbol
= NULL
;
4841 demand_empty_rest_of_line ();
4844 /* Process the syntatical end of a procedure. Make sure all the
4845 appropriate pseudo-ops were found within the procedure. */
4852 /* We must have a valid space and subspace. */
4853 pa_check_current_space_and_subspace ();
4855 /* If we are within a procedure definition, make sure we've
4856 defined a label for the procedure; handle case where the
4857 label was defined after the .PROC directive.
4859 Note there's not need to diddle with the segment or fragment
4860 for the label symbol in this case. We have already switched
4861 into the new $CODE$ subspace at this point. */
4862 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4864 label_symbol_struct
*label_symbol
= pa_get_label ();
4868 if (label_symbol
->lss_label
)
4870 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4871 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4873 /* Also handle allocation of a fixup to hold the unwind
4874 information when the label appears after the proc/procend. */
4875 if (within_entry_exit
)
4877 char *where
= frag_more (0);
4879 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4880 NULL
, (offsetT
) 0, NULL
,
4881 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4882 (int *) &last_call_info
->ci_unwind
.descriptor
);
4887 as_bad ("Missing function name for .PROC (corrupted label chain)");
4890 as_bad ("Missing function name for .PROC");
4893 if (!within_procedure
)
4894 as_bad ("misplaced .procend");
4896 if (!callinfo_found
)
4897 as_bad ("Missing .callinfo for this procedure");
4899 if (within_entry_exit
)
4900 as_bad ("Missing .EXIT for a .ENTRY");
4902 last_call_info
->function_size
4903 = frag_more (0) - frag_now
->fr_literal
- S_GET_VALUE (last_call_info
->start_symbol
);
4904 within_procedure
= FALSE
;
4905 demand_empty_rest_of_line ();
4906 pa_undefine_label ();
4909 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4910 then create a new space entry to hold the information specified
4911 by the parameters to the .SPACE directive. */
4913 static sd_chain_struct
*
4914 pa_parse_space_stmt (space_name
, create_flag
)
4918 char *name
, *ptemp
, c
;
4919 char loadable
, defined
, private, sort
;
4921 asection
*seg
= NULL
;
4922 sd_chain_struct
*space
;
4924 /* load default values */
4930 if (strcmp (space_name
, "$TEXT$") == 0)
4932 seg
= pa_def_spaces
[0].segment
;
4933 defined
= pa_def_spaces
[0].defined
;
4934 private = pa_def_spaces
[0].private;
4935 sort
= pa_def_spaces
[0].sort
;
4936 spnum
= pa_def_spaces
[0].spnum
;
4938 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4940 seg
= pa_def_spaces
[1].segment
;
4941 defined
= pa_def_spaces
[1].defined
;
4942 private = pa_def_spaces
[1].private;
4943 sort
= pa_def_spaces
[1].sort
;
4944 spnum
= pa_def_spaces
[1].spnum
;
4947 if (!is_end_of_statement ())
4949 print_errors
= FALSE
;
4950 ptemp
= input_line_pointer
+ 1;
4951 /* First see if the space was specified as a number rather than
4952 as a name. According to the PA assembly manual the rest of
4953 the line should be ignored. */
4954 temp
= pa_parse_number (&ptemp
, 0);
4958 input_line_pointer
= ptemp
;
4962 while (!is_end_of_statement ())
4964 input_line_pointer
++;
4965 name
= input_line_pointer
;
4966 c
= get_symbol_end ();
4967 if ((strncasecmp (name
, "spnum", 5) == 0))
4969 *input_line_pointer
= c
;
4970 input_line_pointer
++;
4971 spnum
= get_absolute_expression ();
4973 else if ((strncasecmp (name
, "sort", 4) == 0))
4975 *input_line_pointer
= c
;
4976 input_line_pointer
++;
4977 sort
= get_absolute_expression ();
4979 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4981 *input_line_pointer
= c
;
4984 else if ((strncasecmp (name
, "notdefined", 10) == 0))
4986 *input_line_pointer
= c
;
4989 else if ((strncasecmp (name
, "private", 7) == 0))
4991 *input_line_pointer
= c
;
4996 as_bad ("Invalid .SPACE argument");
4997 *input_line_pointer
= c
;
4998 if (!is_end_of_statement ())
4999 input_line_pointer
++;
5003 print_errors
= TRUE
;
5006 if (create_flag
&& seg
== NULL
)
5007 seg
= subseg_new (space_name
, 0);
5009 /* If create_flag is nonzero, then create the new space with
5010 the attributes computed above. Else set the values in
5011 an already existing space -- this can only happen for
5012 the first occurence of a built-in space. */
5014 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5015 private, sort
, seg
, 1);
5018 space
= is_defined_space (space_name
);
5019 SPACE_SPNUM (space
) = spnum
;
5020 SPACE_DEFINED (space
) = defined
& 1;
5021 SPACE_USER_DEFINED (space
) = 1;
5024 #ifdef obj_set_section_attributes
5025 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5031 /* Handle a .SPACE pseudo-op; this switches the current space to the
5032 given space, creating the new space if necessary. */
5038 char *name
, c
, *space_name
, *save_s
;
5040 sd_chain_struct
*sd_chain
;
5042 if (within_procedure
)
5044 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5045 ignore_rest_of_line ();
5049 /* Check for some of the predefined spaces. FIXME: most of the code
5050 below is repeated several times, can we extract the common parts
5051 and place them into a subroutine or something similar? */
5052 /* FIXME Is this (and the next IF stmt) really right?
5053 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5054 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5056 input_line_pointer
+= 6;
5057 sd_chain
= is_defined_space ("$TEXT$");
5058 if (sd_chain
== NULL
)
5059 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5060 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5061 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5063 current_space
= sd_chain
;
5064 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5066 = pa_subsegment_to_subspace (text_section
,
5067 sd_chain
->sd_last_subseg
);
5068 demand_empty_rest_of_line ();
5071 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5073 input_line_pointer
+= 9;
5074 sd_chain
= is_defined_space ("$PRIVATE$");
5075 if (sd_chain
== NULL
)
5076 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5077 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5078 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5080 current_space
= sd_chain
;
5081 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5083 = pa_subsegment_to_subspace (data_section
,
5084 sd_chain
->sd_last_subseg
);
5085 demand_empty_rest_of_line ();
5088 if (!strncasecmp (input_line_pointer
,
5089 GDB_DEBUG_SPACE_NAME
,
5090 strlen (GDB_DEBUG_SPACE_NAME
)))
5092 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5093 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5094 if (sd_chain
== NULL
)
5095 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5096 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5097 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5099 current_space
= sd_chain
;
5102 asection
*gdb_section
5103 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5105 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5107 = pa_subsegment_to_subspace (gdb_section
,
5108 sd_chain
->sd_last_subseg
);
5110 demand_empty_rest_of_line ();
5114 /* It could be a space specified by number. */
5116 save_s
= input_line_pointer
;
5117 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5119 if ((sd_chain
= pa_find_space_by_number (temp
)))
5121 current_space
= sd_chain
;
5123 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5125 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5126 sd_chain
->sd_last_subseg
);
5127 demand_empty_rest_of_line ();
5132 /* Not a number, attempt to create a new space. */
5134 input_line_pointer
= save_s
;
5135 name
= input_line_pointer
;
5136 c
= get_symbol_end ();
5137 space_name
= xmalloc (strlen (name
) + 1);
5138 strcpy (space_name
, name
);
5139 *input_line_pointer
= c
;
5141 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5142 current_space
= sd_chain
;
5144 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5145 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5146 sd_chain
->sd_last_subseg
);
5147 demand_empty_rest_of_line ();
5151 /* Switch to a new space. (I think). FIXME. */
5160 sd_chain_struct
*space
;
5162 name
= input_line_pointer
;
5163 c
= get_symbol_end ();
5164 space
= is_defined_space (name
);
5168 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5171 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5173 *input_line_pointer
= c
;
5174 demand_empty_rest_of_line ();
5177 /* If VALUE is an exact power of two between zero and 2^31, then
5178 return log2 (VALUE). Else return -1. */
5186 while ((1 << shift
) != value
&& shift
< 32)
5195 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5196 given subspace, creating the new subspace if necessary.
5198 FIXME. Should mirror pa_space more closely, in particular how
5199 they're broken up into subroutines. */
5202 pa_subspace (unused
)
5205 char *name
, *ss_name
, *alias
, c
;
5206 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5207 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5208 sd_chain_struct
*space
;
5209 ssd_chain_struct
*ssd
;
5212 if (current_space
== NULL
)
5213 as_fatal ("Must be in a space before changing or declaring subspaces.\n");
5215 if (within_procedure
)
5217 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5218 ignore_rest_of_line ();
5222 name
= input_line_pointer
;
5223 c
= get_symbol_end ();
5224 ss_name
= xmalloc (strlen (name
) + 1);
5225 strcpy (ss_name
, name
);
5226 *input_line_pointer
= c
;
5228 /* Load default values. */
5241 space
= current_space
;
5242 ssd
= is_defined_subspace (ss_name
);
5243 /* Allow user to override the builtin attributes of subspaces. But
5244 only allow the attributes to be changed once! */
5245 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5247 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5248 current_subspace
= ssd
;
5249 if (!is_end_of_statement ())
5250 as_warn ("Parameters of an existing subspace can\'t be modified");
5251 demand_empty_rest_of_line ();
5256 /* A new subspace. Load default values if it matches one of
5257 the builtin subspaces. */
5259 while (pa_def_subspaces
[i
].name
)
5261 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5263 loadable
= pa_def_subspaces
[i
].loadable
;
5264 common
= pa_def_subspaces
[i
].common
;
5265 dup_common
= pa_def_subspaces
[i
].dup_common
;
5266 code_only
= pa_def_subspaces
[i
].code_only
;
5267 zero
= pa_def_subspaces
[i
].zero
;
5268 space_index
= pa_def_subspaces
[i
].space_index
;
5269 alignment
= pa_def_subspaces
[i
].alignment
;
5270 quadrant
= pa_def_subspaces
[i
].quadrant
;
5271 access
= pa_def_subspaces
[i
].access
;
5272 sort
= pa_def_subspaces
[i
].sort
;
5273 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5274 alias
= pa_def_subspaces
[i
].alias
;
5281 /* We should be working with a new subspace now. Fill in
5282 any information as specified by the user. */
5283 if (!is_end_of_statement ())
5285 input_line_pointer
++;
5286 while (!is_end_of_statement ())
5288 name
= input_line_pointer
;
5289 c
= get_symbol_end ();
5290 if ((strncasecmp (name
, "quad", 4) == 0))
5292 *input_line_pointer
= c
;
5293 input_line_pointer
++;
5294 quadrant
= get_absolute_expression ();
5296 else if ((strncasecmp (name
, "align", 5) == 0))
5298 *input_line_pointer
= c
;
5299 input_line_pointer
++;
5300 alignment
= get_absolute_expression ();
5301 if (log2 (alignment
) == -1)
5303 as_bad ("Alignment must be a power of 2");
5307 else if ((strncasecmp (name
, "access", 6) == 0))
5309 *input_line_pointer
= c
;
5310 input_line_pointer
++;
5311 access
= get_absolute_expression ();
5313 else if ((strncasecmp (name
, "sort", 4) == 0))
5315 *input_line_pointer
= c
;
5316 input_line_pointer
++;
5317 sort
= get_absolute_expression ();
5319 else if ((strncasecmp (name
, "code_only", 9) == 0))
5321 *input_line_pointer
= c
;
5324 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5326 *input_line_pointer
= c
;
5329 else if ((strncasecmp (name
, "common", 6) == 0))
5331 *input_line_pointer
= c
;
5334 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5336 *input_line_pointer
= c
;
5339 else if ((strncasecmp (name
, "zero", 4) == 0))
5341 *input_line_pointer
= c
;
5344 else if ((strncasecmp (name
, "first", 5) == 0))
5345 as_bad ("FIRST not supported as a .SUBSPACE argument");
5347 as_bad ("Invalid .SUBSPACE argument");
5348 if (!is_end_of_statement ())
5349 input_line_pointer
++;
5353 /* Compute a reasonable set of BFD flags based on the information
5354 in the .subspace directive. */
5355 applicable
= bfd_applicable_section_flags (stdoutput
);
5358 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5361 if (common
|| dup_common
)
5362 flags
|= SEC_IS_COMMON
;
5364 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5366 /* This is a zero-filled subspace (eg BSS). */
5368 flags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
5370 applicable
&= flags
;
5372 /* If this is an existing subspace, then we want to use the
5373 segment already associated with the subspace.
5375 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5376 lots of sections. It might be a problem in the PA ELF
5377 code, I do not know yet. For now avoid creating anything
5378 but the "standard" sections for ELF. */
5380 section
= ssd
->ssd_seg
;
5382 section
= subseg_new (alias
, 0);
5383 else if (!alias
&& USE_ALIASES
)
5385 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5386 demand_empty_rest_of_line ();
5390 section
= subseg_new (ss_name
, 0);
5393 seg_info (section
)->bss
= 1;
5395 /* Now set the flags. */
5396 bfd_set_section_flags (stdoutput
, section
, applicable
);
5398 /* Record any alignment request for this section. */
5399 record_alignment (section
, log2 (alignment
));
5401 /* Set the starting offset for this section. */
5402 bfd_set_section_vma (stdoutput
, section
,
5403 pa_subspace_start (space
, quadrant
));
5405 /* Now that all the flags are set, update an existing subspace,
5406 or create a new one. */
5409 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5410 code_only
, common
, dup_common
,
5411 sort
, zero
, access
, space_index
,
5412 alignment
, quadrant
,
5415 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5417 dup_common
, zero
, sort
,
5418 access
, space_index
,
5419 alignment
, quadrant
, section
);
5421 demand_empty_rest_of_line ();
5422 current_subspace
->ssd_seg
= section
;
5423 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5425 SUBSPACE_DEFINED (current_subspace
) = 1;
5429 /* Create default space and subspace dictionaries. */
5436 space_dict_root
= NULL
;
5437 space_dict_last
= NULL
;
5440 while (pa_def_spaces
[i
].name
)
5444 /* Pick the right name to use for the new section. */
5445 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5446 name
= pa_def_spaces
[i
].alias
;
5448 name
= pa_def_spaces
[i
].name
;
5450 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5451 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5452 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5453 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5454 pa_def_spaces
[i
].segment
, 0);
5459 while (pa_def_subspaces
[i
].name
)
5462 int applicable
, subsegment
;
5463 asection
*segment
= NULL
;
5464 sd_chain_struct
*space
;
5466 /* Pick the right name for the new section and pick the right
5467 subsegment number. */
5468 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5470 name
= pa_def_subspaces
[i
].alias
;
5471 subsegment
= pa_def_subspaces
[i
].subsegment
;
5475 name
= pa_def_subspaces
[i
].name
;
5479 /* Create the new section. */
5480 segment
= subseg_new (name
, subsegment
);
5483 /* For SOM we want to replace the standard .text, .data, and .bss
5484 sections with our own. We also want to set BFD flags for
5485 all the built-in subspaces. */
5486 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5488 text_section
= segment
;
5489 applicable
= bfd_applicable_section_flags (stdoutput
);
5490 bfd_set_section_flags (stdoutput
, segment
,
5491 applicable
& (SEC_ALLOC
| SEC_LOAD
5492 | SEC_RELOC
| SEC_CODE
5494 | SEC_HAS_CONTENTS
));
5496 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5498 data_section
= segment
;
5499 applicable
= bfd_applicable_section_flags (stdoutput
);
5500 bfd_set_section_flags (stdoutput
, segment
,
5501 applicable
& (SEC_ALLOC
| SEC_LOAD
5503 | SEC_HAS_CONTENTS
));
5507 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5509 bss_section
= segment
;
5510 applicable
= bfd_applicable_section_flags (stdoutput
);
5511 bfd_set_section_flags (stdoutput
, segment
,
5512 applicable
& SEC_ALLOC
);
5514 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5516 applicable
= bfd_applicable_section_flags (stdoutput
);
5517 bfd_set_section_flags (stdoutput
, segment
,
5518 applicable
& (SEC_ALLOC
| SEC_LOAD
5521 | SEC_HAS_CONTENTS
));
5523 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5525 applicable
= bfd_applicable_section_flags (stdoutput
);
5526 bfd_set_section_flags (stdoutput
, segment
,
5527 applicable
& (SEC_ALLOC
| SEC_LOAD
5530 | SEC_HAS_CONTENTS
));
5533 /* Find the space associated with this subspace. */
5534 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5535 def_space_index
].segment
);
5538 as_fatal ("Internal error: Unable to find containing space for %s.",
5539 pa_def_subspaces
[i
].name
);
5542 create_new_subspace (space
, name
,
5543 pa_def_subspaces
[i
].loadable
,
5544 pa_def_subspaces
[i
].code_only
,
5545 pa_def_subspaces
[i
].common
,
5546 pa_def_subspaces
[i
].dup_common
,
5547 pa_def_subspaces
[i
].zero
,
5548 pa_def_subspaces
[i
].sort
,
5549 pa_def_subspaces
[i
].access
,
5550 pa_def_subspaces
[i
].space_index
,
5551 pa_def_subspaces
[i
].alignment
,
5552 pa_def_subspaces
[i
].quadrant
,
5560 /* Create a new space NAME, with the appropriate flags as defined
5561 by the given parameters. */
5563 static sd_chain_struct
*
5564 create_new_space (name
, spnum
, loadable
, defined
, private,
5565 sort
, seg
, user_defined
)
5575 sd_chain_struct
*chain_entry
;
5577 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5579 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5582 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5583 strcpy (SPACE_NAME (chain_entry
), name
);
5584 SPACE_DEFINED (chain_entry
) = defined
;
5585 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5586 SPACE_SPNUM (chain_entry
) = spnum
;
5588 chain_entry
->sd_seg
= seg
;
5589 chain_entry
->sd_last_subseg
= -1;
5590 chain_entry
->sd_subspaces
= NULL
;
5591 chain_entry
->sd_next
= NULL
;
5593 /* Find spot for the new space based on its sort key. */
5594 if (!space_dict_last
)
5595 space_dict_last
= chain_entry
;
5597 if (space_dict_root
== NULL
)
5598 space_dict_root
= chain_entry
;
5601 sd_chain_struct
*chain_pointer
;
5602 sd_chain_struct
*prev_chain_pointer
;
5604 chain_pointer
= space_dict_root
;
5605 prev_chain_pointer
= NULL
;
5607 while (chain_pointer
)
5609 prev_chain_pointer
= chain_pointer
;
5610 chain_pointer
= chain_pointer
->sd_next
;
5613 /* At this point we've found the correct place to add the new
5614 entry. So add it and update the linked lists as appropriate. */
5615 if (prev_chain_pointer
)
5617 chain_entry
->sd_next
= chain_pointer
;
5618 prev_chain_pointer
->sd_next
= chain_entry
;
5622 space_dict_root
= chain_entry
;
5623 chain_entry
->sd_next
= chain_pointer
;
5626 if (chain_entry
->sd_next
== NULL
)
5627 space_dict_last
= chain_entry
;
5630 /* This is here to catch predefined spaces which do not get
5631 modified by the user's input. Another call is found at
5632 the bottom of pa_parse_space_stmt to handle cases where
5633 the user modifies a predefined space. */
5634 #ifdef obj_set_section_attributes
5635 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5641 /* Create a new subspace NAME, with the appropriate flags as defined
5642 by the given parameters.
5644 Add the new subspace to the subspace dictionary chain in numerical
5645 order as defined by the SORT entries. */
5647 static ssd_chain_struct
*
5648 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5649 dup_common
, is_zero
, sort
, access
, space_index
,
5650 alignment
, quadrant
, seg
)
5651 sd_chain_struct
*space
;
5653 int loadable
, code_only
, common
, dup_common
, is_zero
;
5661 ssd_chain_struct
*chain_entry
;
5663 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5665 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5667 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5668 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5670 /* Initialize subspace_defined. When we hit a .subspace directive
5671 we'll set it to 1 which "locks-in" the subspace attributes. */
5672 SUBSPACE_DEFINED (chain_entry
) = 0;
5674 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5675 chain_entry
->ssd_seg
= seg
;
5676 chain_entry
->ssd_next
= NULL
;
5678 /* Find spot for the new subspace based on its sort key. */
5679 if (space
->sd_subspaces
== NULL
)
5680 space
->sd_subspaces
= chain_entry
;
5683 ssd_chain_struct
*chain_pointer
;
5684 ssd_chain_struct
*prev_chain_pointer
;
5686 chain_pointer
= space
->sd_subspaces
;
5687 prev_chain_pointer
= NULL
;
5689 while (chain_pointer
)
5691 prev_chain_pointer
= chain_pointer
;
5692 chain_pointer
= chain_pointer
->ssd_next
;
5695 /* Now we have somewhere to put the new entry. Insert it and update
5697 if (prev_chain_pointer
)
5699 chain_entry
->ssd_next
= chain_pointer
;
5700 prev_chain_pointer
->ssd_next
= chain_entry
;
5704 space
->sd_subspaces
= chain_entry
;
5705 chain_entry
->ssd_next
= chain_pointer
;
5709 #ifdef obj_set_subsection_attributes
5710 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5717 /* Update the information for the given subspace based upon the
5718 various arguments. Return the modified subspace chain entry. */
5720 static ssd_chain_struct
*
5721 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5722 zero
, access
, space_index
, alignment
, quadrant
, section
)
5723 sd_chain_struct
*space
;
5737 ssd_chain_struct
*chain_entry
;
5739 chain_entry
= is_defined_subspace (name
);
5741 #ifdef obj_set_subsection_attributes
5742 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5749 /* Return the space chain entry for the space with the name NAME or
5750 NULL if no such space exists. */
5752 static sd_chain_struct
*
5753 is_defined_space (name
)
5756 sd_chain_struct
*chain_pointer
;
5758 for (chain_pointer
= space_dict_root
;
5760 chain_pointer
= chain_pointer
->sd_next
)
5762 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5763 return chain_pointer
;
5766 /* No mapping from segment to space was found. Return NULL. */
5770 /* Find and return the space associated with the given seg. If no mapping
5771 from the given seg to a space is found, then return NULL.
5773 Unlike subspaces, the number of spaces is not expected to grow much,
5774 so a linear exhaustive search is OK here. */
5776 static sd_chain_struct
*
5777 pa_segment_to_space (seg
)
5780 sd_chain_struct
*space_chain
;
5782 /* Walk through each space looking for the correct mapping. */
5783 for (space_chain
= space_dict_root
;
5785 space_chain
= space_chain
->sd_next
)
5787 if (space_chain
->sd_seg
== seg
)
5791 /* Mapping was not found. Return NULL. */
5795 /* Return the space chain entry for the subspace with the name NAME or
5796 NULL if no such subspace exists.
5798 Uses a linear search through all the spaces and subspaces, this may
5799 not be appropriate if we ever being placing each function in its
5802 static ssd_chain_struct
*
5803 is_defined_subspace (name
)
5806 sd_chain_struct
*space_chain
;
5807 ssd_chain_struct
*subspace_chain
;
5809 /* Walk through each space. */
5810 for (space_chain
= space_dict_root
;
5812 space_chain
= space_chain
->sd_next
)
5814 /* Walk through each subspace looking for a name which matches. */
5815 for (subspace_chain
= space_chain
->sd_subspaces
;
5817 subspace_chain
= subspace_chain
->ssd_next
)
5818 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5819 return subspace_chain
;
5822 /* Subspace wasn't found. Return NULL. */
5826 /* Find and return the subspace associated with the given seg. If no
5827 mapping from the given seg to a subspace is found, then return NULL.
5829 If we ever put each procedure/function within its own subspace
5830 (to make life easier on the compiler and linker), then this will have
5831 to become more efficient. */
5833 static ssd_chain_struct
*
5834 pa_subsegment_to_subspace (seg
, subseg
)
5838 sd_chain_struct
*space_chain
;
5839 ssd_chain_struct
*subspace_chain
;
5841 /* Walk through each space. */
5842 for (space_chain
= space_dict_root
;
5844 space_chain
= space_chain
->sd_next
)
5846 if (space_chain
->sd_seg
== seg
)
5848 /* Walk through each subspace within each space looking for
5849 the correct mapping. */
5850 for (subspace_chain
= space_chain
->sd_subspaces
;
5852 subspace_chain
= subspace_chain
->ssd_next
)
5853 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5854 return subspace_chain
;
5858 /* No mapping from subsegment to subspace found. Return NULL. */
5862 /* Given a number, try and find a space with the name number.
5864 Return a pointer to a space dictionary chain entry for the space
5865 that was found or NULL on failure. */
5867 static sd_chain_struct
*
5868 pa_find_space_by_number (number
)
5871 sd_chain_struct
*space_chain
;
5873 for (space_chain
= space_dict_root
;
5875 space_chain
= space_chain
->sd_next
)
5877 if (SPACE_SPNUM (space_chain
) == number
)
5881 /* No appropriate space found. Return NULL. */
5885 /* Return the starting address for the given subspace. If the starting
5886 address is unknown then return zero. */
5889 pa_subspace_start (space
, quadrant
)
5890 sd_chain_struct
*space
;
5893 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5894 is not correct for the PA OSF1 port. */
5895 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5897 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5903 /* FIXME. Needs documentation. */
5905 pa_next_subseg (space
)
5906 sd_chain_struct
*space
;
5909 space
->sd_last_subseg
++;
5910 return space
->sd_last_subseg
;
5913 /* Helper function for pa_stringer. Used to find the end of
5920 unsigned int c
= *s
& CHAR_MASK
;
5922 /* We must have a valid space and subspace. */
5923 pa_check_current_space_and_subspace ();
5936 /* Handle a .STRING type pseudo-op. */
5939 pa_stringer (append_zero
)
5942 char *s
, num_buf
[4];
5946 /* Preprocess the string to handle PA-specific escape sequences.
5947 For example, \xDD where DD is a hexidecimal number should be
5948 changed to \OOO where OOO is an octal number. */
5950 /* Skip the opening quote. */
5951 s
= input_line_pointer
+ 1;
5953 while (is_a_char (c
= pa_stringer_aux (s
++)))
5960 /* Handle \x<num>. */
5963 unsigned int number
;
5968 /* Get pas the 'x'. */
5970 for (num_digit
= 0, number
= 0, dg
= *s
;
5972 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5973 || (dg
>= 'A' && dg
<= 'F'));
5977 number
= number
* 16 + dg
- '0';
5978 else if (dg
>= 'a' && dg
<= 'f')
5979 number
= number
* 16 + dg
- 'a' + 10;
5981 number
= number
* 16 + dg
- 'A' + 10;
5991 sprintf (num_buf
, "%02o", number
);
5994 sprintf (num_buf
, "%03o", number
);
5997 for (i
= 0; i
<= num_digit
; i
++)
5998 s_start
[i
] = num_buf
[i
];
6002 /* This might be a "\"", skip over the escaped char. */
6009 stringer (append_zero
);
6010 pa_undefine_label ();
6013 /* Handle a .VERSION pseudo-op. */
6020 pa_undefine_label ();
6023 /* Handle a .COPYRIGHT pseudo-op. */
6026 pa_copyright (unused
)
6030 pa_undefine_label ();
6033 /* Just like a normal cons, but when finished we have to undefine
6034 the latest space label. */
6041 pa_undefine_label ();
6044 /* Switch to the data space. As usual delete our label. */
6050 current_space
= is_defined_space ("$PRIVATE$");
6052 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6054 pa_undefine_label ();
6057 /* Like float_cons, but we need to undefine our label. */
6060 pa_float_cons (float_type
)
6063 float_cons (float_type
);
6064 pa_undefine_label ();
6067 /* Like s_fill, but delete our label when finished. */
6073 /* We must have a valid space and subspace. */
6074 pa_check_current_space_and_subspace ();
6077 pa_undefine_label ();
6080 /* Like lcomm, but delete our label when finished. */
6083 pa_lcomm (needs_align
)
6086 /* We must have a valid space and subspace. */
6087 pa_check_current_space_and_subspace ();
6089 s_lcomm (needs_align
);
6090 pa_undefine_label ();
6093 /* Like lsym, but delete our label when finished. */
6099 /* We must have a valid space and subspace. */
6100 pa_check_current_space_and_subspace ();
6103 pa_undefine_label ();
6106 /* Switch to the text space. Like s_text, but delete our
6107 label when finished. */
6112 current_space
= is_defined_space ("$TEXT$");
6114 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6117 pa_undefine_label ();
6120 /* On the PA relocations which involve function symbols must not be
6121 adjusted. This so that the linker can know when/how to create argument
6122 relocation stubs for indirect calls and calls to static functions.
6124 "T" field selectors create DLT relative fixups for accessing
6125 globals and statics in PIC code; each DLT relative fixup creates
6126 an entry in the DLT table. The entries contain the address of
6127 the final target (eg accessing "foo" would create a DLT entry
6128 with the address of "foo").
6130 Unfortunately, the HP linker doesn't take into account any addend
6131 when generating the DLT; so accessing $LIT$+8 puts the address of
6132 $LIT$ into the DLT rather than the address of $LIT$+8.
6134 The end result is we can't perform relocation symbol reductions for
6135 any fixup which creates entries in the DLT (eg they use "T" field
6138 Reject reductions involving symbols with external scope; such
6139 reductions make life a living hell for object file editors.
6141 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6142 the code space. The SOM BFD backend doesn't know how to pull the
6143 right bits out of an instruction. */
6146 hppa_fix_adjustable (fixp
)
6149 struct hppa_fix_struct
*hppa_fix
;
6151 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6154 /* Reject reductions of symbols in 32bit relocs. */
6155 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6159 /* Reject reductions of symbols in DLT relative relocs,
6160 relocations with plabels. */
6161 if (hppa_fix
->fx_r_field
== e_tsel
6162 || hppa_fix
->fx_r_field
== e_ltsel
6163 || hppa_fix
->fx_r_field
== e_rtsel
6164 || hppa_fix
->fx_r_field
== e_psel
6165 || hppa_fix
->fx_r_field
== e_rpsel
6166 || hppa_fix
->fx_r_field
== e_lpsel
)
6169 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6172 /* Reject reductions of function symbols. */
6173 if (fixp
->fx_addsy
== 0
6174 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6180 /* Return nonzero if the fixup in FIXP will require a relocation,
6181 even it if appears that the fixup could be completely handled
6185 hppa_force_relocation (fixp
)
6188 struct hppa_fix_struct
*hppa_fixp
;
6190 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6192 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6196 #define stub_needed(CALLER, CALLEE) \
6197 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6199 /* It is necessary to force PC-relative calls/jumps to have a relocation
6200 entry if they're going to need either a argument relocation or long
6201 call stub. FIXME. Can't we need the same for absolute calls? */
6202 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6203 && (stub_needed (((obj_symbol_type
*)
6204 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6205 hppa_fixp
->fx_arg_reloc
)))
6210 /* No need (yet) to force another relocations to be emitted. */
6214 /* Now for some ELF specific code. FIXME. */
6216 /* For ELF, this function serves one purpose: to setup the st_size
6217 field of STT_FUNC symbols. */
6220 elf_hppa_final_processing ()
6222 struct call_info
*call_info_pointer
;
6224 for (call_info_pointer
= call_info_root
;
6226 call_info_pointer
= call_info_pointer
->ci_next
)
6228 elf_symbol_type
*esym
6229 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6230 esym
->internal_elf_sym
.st_size
= call_info_pointer
->function_size
;