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
, 1);
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
)
2860 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2862 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2864 /* Handle pc-relative exceptions from above. */
2865 #define stub_needed(CALLER, CALLEE) \
2866 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2867 if ((fmt
== 12 || fmt
== 17)
2870 && !stub_needed (((obj_symbol_type
*)
2871 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2872 hppa_fixP
->fx_arg_reloc
)
2873 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2875 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2877 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2882 /* Handle all opcodes with the 'j' operand type. */
2884 CHECK_FIELD (new_val
, 8191, -8192, 0);
2886 /* Mask off 14 bits to be changed. */
2887 bfd_put_32 (stdoutput
,
2888 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2890 low_sign_unext (new_val
, 14, &result
);
2893 /* Handle all opcodes with the 'k' operand type. */
2895 CHECK_FIELD (new_val
, 2097152, 0, 0);
2897 /* Mask off 21 bits to be changed. */
2898 bfd_put_32 (stdoutput
,
2899 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2901 dis_assemble_21 (new_val
, &result
);
2904 /* Handle all the opcodes with the 'i' operand type. */
2906 CHECK_FIELD (new_val
, 1023, -1023, 0);
2908 /* Mask off 11 bits to be changed. */
2909 bfd_put_32 (stdoutput
,
2910 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2912 low_sign_unext (new_val
, 11, &result
);
2915 /* Handle all the opcodes with the 'w' operand type. */
2917 CHECK_FIELD (new_val
, 8191, -8192, 0)
2919 /* Mask off 11 bits to be changed. */
2920 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2921 bfd_put_32 (stdoutput
,
2922 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
2925 dis_assemble_12 (result
, &w1
, &w
);
2926 result
= ((w1
<< 2) | w
);
2929 /* Handle some of the opcodes with the 'W' operand type. */
2931 CHECK_FIELD (new_val
, 262143, -262144, 0);
2933 /* Mask off 17 bits to be changed. */
2934 bfd_put_32 (stdoutput
,
2935 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
2937 sign_unext ((new_val
- 8) >> 2, 17, &result
);
2938 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2939 result
= ((w2
<< 2) | (w1
<< 16) | w
);
2944 bfd_put_32 (stdoutput
, new_val
, buf
);
2948 as_bad ("Unknown relocation encountered in md_apply_fix.");
2952 /* Insert the relocation. */
2953 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
2958 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
2959 (unsigned int) fixP
, fixP
->fx_r_type
);
2964 /* Exactly what point is a PC-relative offset relative TO?
2965 On the PA, they're relative to the address of the offset. */
2968 md_pcrel_from (fixP
)
2971 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
2974 /* Return nonzero if the input line pointer is at the end of
2978 is_end_of_statement ()
2980 return ((*input_line_pointer
== '\n')
2981 || (*input_line_pointer
== ';')
2982 || (*input_line_pointer
== '!'));
2985 /* Read a number from S. The number might come in one of many forms,
2986 the most common will be a hex or decimal constant, but it could be
2987 a pre-defined register (Yuk!), or an absolute symbol.
2989 Return a number or -1 for failure.
2991 When parsing PA-89 FP register numbers RESULT will be
2992 the address of a structure to return information about
2993 L/R half of FP registers, store results there as appropriate.
2995 pa_parse_number can not handle negative constants and will fail
2996 horribly if it is passed such a constant. */
2999 pa_parse_number (s
, result
)
3001 struct pa_89_fp_reg_struct
*result
;
3010 /* Skip whitespace before the number. */
3011 while (*p
== ' ' || *p
== '\t')
3014 /* Store info in RESULT if requested by caller. */
3017 result
->number_part
= -1;
3018 result
->l_r_select
= -1;
3024 /* Looks like a number. */
3027 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3029 /* The number is specified in hex. */
3031 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3032 || ((*p
>= 'A') && (*p
<= 'F')))
3035 num
= num
* 16 + *p
- '0';
3036 else if (*p
>= 'a' && *p
<= 'f')
3037 num
= num
* 16 + *p
- 'a' + 10;
3039 num
= num
* 16 + *p
- 'A' + 10;
3045 /* The number is specified in decimal. */
3046 while (isdigit (*p
))
3048 num
= num
* 10 + *p
- '0';
3053 /* Store info in RESULT if requested by the caller. */
3056 result
->number_part
= num
;
3058 if (IS_R_SELECT (p
))
3060 result
->l_r_select
= 1;
3063 else if (IS_L_SELECT (p
))
3065 result
->l_r_select
= 0;
3069 result
->l_r_select
= 0;
3074 /* The number might be a predefined register. */
3079 /* Tege hack: Special case for general registers as the general
3080 code makes a binary search with case translation, and is VERY
3085 if (*p
== 'e' && *(p
+ 1) == 't'
3086 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3089 num
= *p
- '0' + 28;
3097 else if (!isdigit (*p
))
3100 as_bad ("Undefined register: '%s'.", name
);
3106 num
= num
* 10 + *p
++ - '0';
3107 while (isdigit (*p
));
3112 /* Do a normal register search. */
3113 while (is_part_of_name (c
))
3119 status
= reg_name_search (name
);
3125 as_bad ("Undefined register: '%s'.", name
);
3131 /* Store info in RESULT if requested by caller. */
3134 result
->number_part
= num
;
3135 if (IS_R_SELECT (p
- 1))
3136 result
->l_r_select
= 1;
3137 else if (IS_L_SELECT (p
- 1))
3138 result
->l_r_select
= 0;
3140 result
->l_r_select
= 0;
3145 /* And finally, it could be a symbol in the absolute section which
3146 is effectively a constant. */
3150 while (is_part_of_name (c
))
3156 if ((sym
= symbol_find (name
)) != NULL
)
3158 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3159 num
= S_GET_VALUE (sym
);
3163 as_bad ("Non-absolute symbol: '%s'.", name
);
3169 /* There is where we'd come for an undefined symbol
3170 or for an empty string. For an empty string we
3171 will return zero. That's a concession made for
3172 compatability with the braindamaged HP assemblers. */
3178 as_bad ("Undefined absolute constant: '%s'.", name
);
3184 /* Store info in RESULT if requested by caller. */
3187 result
->number_part
= num
;
3188 if (IS_R_SELECT (p
- 1))
3189 result
->l_r_select
= 1;
3190 else if (IS_L_SELECT (p
- 1))
3191 result
->l_r_select
= 0;
3193 result
->l_r_select
= 0;
3201 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3203 /* Given NAME, find the register number associated with that name, return
3204 the integer value associated with the given name or -1 on failure. */
3207 reg_name_search (name
)
3210 int middle
, low
, high
;
3214 high
= REG_NAME_CNT
- 1;
3218 middle
= (low
+ high
) / 2;
3219 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3225 return pre_defined_registers
[middle
].value
;
3227 while (low
<= high
);
3233 /* Return nonzero if the given INSN and L/R information will require
3234 a new PA-89 opcode. */
3237 need_89_opcode (insn
, result
)
3239 struct pa_89_fp_reg_struct
*result
;
3241 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3247 /* Parse a condition for a fcmp instruction. Return the numerical
3248 code associated with the condition. */
3251 pa_parse_fp_cmp_cond (s
)
3258 for (i
= 0; i
< 32; i
++)
3260 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3261 strlen (fp_cond_map
[i
].string
)) == 0)
3263 cond
= fp_cond_map
[i
].cond
;
3264 *s
+= strlen (fp_cond_map
[i
].string
);
3265 /* If not a complete match, back up the input string and
3267 if (**s
!= ' ' && **s
!= '\t')
3269 *s
-= strlen (fp_cond_map
[i
].string
);
3272 while (**s
== ' ' || **s
== '\t')
3278 as_bad ("Invalid FP Compare Condition: %s", *s
);
3280 /* Advance over the bogus completer. */
3281 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3287 /* Parse an FP operand format completer returning the completer
3290 static fp_operand_format
3291 pa_parse_fp_format (s
)
3300 if (strncasecmp (*s
, "sgl", 3) == 0)
3305 else if (strncasecmp (*s
, "dbl", 3) == 0)
3310 else if (strncasecmp (*s
, "quad", 4) == 0)
3317 format
= ILLEGAL_FMT
;
3318 as_bad ("Invalid FP Operand Format: %3s", *s
);
3325 /* Convert from a selector string into a selector type. */
3328 pa_chk_field_selector (str
)
3331 int middle
, low
, high
;
3335 /* Read past any whitespace. */
3336 /* FIXME: should we read past newlines and formfeeds??? */
3337 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3340 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3341 name
[0] = tolower ((*str
)[0]),
3343 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3344 name
[0] = tolower ((*str
)[0]),
3345 name
[1] = tolower ((*str
)[1]),
3351 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3355 middle
= (low
+ high
) / 2;
3356 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3363 *str
+= strlen (name
) + 1;
3364 return selector_table
[middle
].field_selector
;
3367 while (low
<= high
);
3372 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3375 get_expression (str
)
3381 save_in
= input_line_pointer
;
3382 input_line_pointer
= str
;
3383 seg
= expression (&the_insn
.exp
);
3384 if (!(seg
== absolute_section
3385 || seg
== undefined_section
3386 || SEG_NORMAL (seg
)))
3388 as_warn ("Bad segment in expression.");
3389 expr_end
= input_line_pointer
;
3390 input_line_pointer
= save_in
;
3393 expr_end
= input_line_pointer
;
3394 input_line_pointer
= save_in
;
3398 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3400 pa_get_absolute_expression (insn
, strp
)
3406 insn
->field_selector
= pa_chk_field_selector (strp
);
3407 save_in
= input_line_pointer
;
3408 input_line_pointer
= *strp
;
3409 expression (&insn
->exp
);
3410 if (insn
->exp
.X_op
!= O_constant
)
3412 as_bad ("Bad segment (should be absolute).");
3413 expr_end
= input_line_pointer
;
3414 input_line_pointer
= save_in
;
3417 expr_end
= input_line_pointer
;
3418 input_line_pointer
= save_in
;
3419 return evaluate_absolute (insn
);
3422 /* Evaluate an absolute expression EXP which may be modified by
3423 the selector FIELD_SELECTOR. Return the value of the expression. */
3425 evaluate_absolute (insn
)
3430 int field_selector
= insn
->field_selector
;
3433 value
= exp
.X_add_number
;
3435 switch (field_selector
)
3441 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3443 if (value
& 0x00000400)
3445 value
= (value
& 0xfffff800) >> 11;
3448 /* Sign extend from bit 21. */
3450 if (value
& 0x00000400)
3451 value
|= 0xfffff800;
3456 /* Arithmetic shift right 11 bits. */
3458 value
= (value
& 0xfffff800) >> 11;
3461 /* Set bits 0-20 to zero. */
3463 value
= value
& 0x7ff;
3466 /* Add 0x800 and arithmetic shift right 11 bits. */
3469 value
= (value
& 0xfffff800) >> 11;
3472 /* Set bitgs 0-21 to one. */
3474 value
|= 0xfffff800;
3477 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3479 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3483 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3488 BAD_CASE (field_selector
);
3494 /* Given an argument location specification return the associated
3495 argument location number. */
3498 pa_build_arg_reloc (type_name
)
3502 if (strncasecmp (type_name
, "no", 2) == 0)
3504 if (strncasecmp (type_name
, "gr", 2) == 0)
3506 else if (strncasecmp (type_name
, "fr", 2) == 0)
3508 else if (strncasecmp (type_name
, "fu", 2) == 0)
3511 as_bad ("Invalid argument location: %s\n", type_name
);
3516 /* Encode and return an argument relocation specification for
3517 the given register in the location specified by arg_reloc. */
3520 pa_align_arg_reloc (reg
, arg_reloc
)
3522 unsigned int arg_reloc
;
3524 unsigned int new_reloc
;
3526 new_reloc
= arg_reloc
;
3542 as_bad ("Invalid argument description: %d", reg
);
3548 /* Parse a PA nullification completer (,n). Return nonzero if the
3549 completer was found; return zero if no completer was found. */
3561 if (strncasecmp (*s
, "n", 1) == 0)
3565 as_bad ("Invalid Nullification: (%c)", **s
);
3574 /* Parse a non-negated compare/subtract completer returning the
3575 number (for encoding in instrutions) of the given completer.
3577 ISBRANCH specifies whether or not this is parsing a condition
3578 completer for a branch (vs a nullification completer for a
3579 computational instruction. */
3582 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3587 char *name
= *s
+ 1;
3595 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3599 if (strcmp (name
, "=") == 0)
3603 else if (strcmp (name
, "<") == 0)
3607 else if (strcmp (name
, "<=") == 0)
3611 else if (strcmp (name
, "<<") == 0)
3615 else if (strcmp (name
, "<<=") == 0)
3619 else if (strcasecmp (name
, "sv") == 0)
3623 else if (strcasecmp (name
, "od") == 0)
3627 /* If we have something like addb,n then there is no condition
3629 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3640 /* Reset pointers if this was really a ,n for a branch instruction. */
3641 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3647 /* Parse a negated compare/subtract completer returning the
3648 number (for encoding in instrutions) of the given completer.
3650 ISBRANCH specifies whether or not this is parsing a condition
3651 completer for a branch (vs a nullification completer for a
3652 computational instruction. */
3655 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3660 char *name
= *s
+ 1;
3668 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3672 if (strcasecmp (name
, "tr") == 0)
3676 else if (strcmp (name
, "<>") == 0)
3680 else if (strcmp (name
, ">=") == 0)
3684 else if (strcmp (name
, ">") == 0)
3688 else if (strcmp (name
, ">>=") == 0)
3692 else if (strcmp (name
, ">>") == 0)
3696 else if (strcasecmp (name
, "nsv") == 0)
3700 else if (strcasecmp (name
, "ev") == 0)
3704 /* If we have something like addb,n then there is no condition
3706 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3717 /* Reset pointers if this was really a ,n for a branch instruction. */
3718 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3724 /* Parse a non-negated addition completer returning the number
3725 (for encoding in instrutions) of the given completer.
3727 ISBRANCH specifies whether or not this is parsing a condition
3728 completer for a branch (vs a nullification completer for a
3729 computational instruction. */
3732 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3737 char *name
= *s
+ 1;
3745 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3749 if (strcmp (name
, "=") == 0)
3753 else if (strcmp (name
, "<") == 0)
3757 else if (strcmp (name
, "<=") == 0)
3761 else if (strcasecmp (name
, "nuv") == 0)
3765 else if (strcasecmp (name
, "znv") == 0)
3769 else if (strcasecmp (name
, "sv") == 0)
3773 else if (strcasecmp (name
, "od") == 0)
3777 /* If we have something like addb,n then there is no condition
3779 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3790 /* Reset pointers if this was really a ,n for a branch instruction. */
3791 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3797 /* Parse a negated addition completer returning the number
3798 (for encoding in instrutions) of the given completer.
3800 ISBRANCH specifies whether or not this is parsing a condition
3801 completer for a branch (vs a nullification completer for a
3802 computational instruction. */
3805 pa_parse_neg_add_cmpltr (s
, isbranch
)
3810 char *name
= *s
+ 1;
3818 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3822 if (strcasecmp (name
, "tr") == 0)
3826 else if (strcmp (name
, "<>") == 0)
3830 else if (strcmp (name
, ">=") == 0)
3834 else if (strcmp (name
, ">") == 0)
3838 else if (strcasecmp (name
, "uv") == 0)
3842 else if (strcasecmp (name
, "vnz") == 0)
3846 else if (strcasecmp (name
, "nsv") == 0)
3850 else if (strcasecmp (name
, "ev") == 0)
3854 /* If we have something like addb,n then there is no condition
3856 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3867 /* Reset pointers if this was really a ,n for a branch instruction. */
3868 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3874 /* Handle an alignment directive. Special so that we can update the
3875 alignment of the subspace if necessary. */
3879 /* We must have a valid space and subspace. */
3880 pa_check_current_space_and_subspace ();
3882 /* Let the generic gas code do most of the work. */
3883 s_align_bytes (bytes
);
3885 /* If bytes is a power of 2, then update the current subspace's
3886 alignment if necessary. */
3887 if (log2 (bytes
) != -1)
3888 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
3891 /* Handle a .BLOCK type pseudo-op. */
3899 unsigned int temp_size
;
3902 /* We must have a valid space and subspace. */
3903 pa_check_current_space_and_subspace ();
3905 temp_size
= get_absolute_expression ();
3907 /* Always fill with zeros, that's what the HP assembler does. */
3910 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3911 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3912 bzero (p
, temp_size
);
3914 /* Convert 2 bytes at a time. */
3916 for (i
= 0; i
< temp_size
; i
+= 2)
3918 md_number_to_chars (p
+ i
,
3920 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
3923 pa_undefine_label ();
3924 demand_empty_rest_of_line ();
3927 /* Handle a .CALL pseudo-op. This involves storing away information
3928 about where arguments are to be found so the linker can detect
3929 (and correct) argument location mismatches between caller and callee. */
3935 /* We must have a valid space and subspace. */
3936 pa_check_current_space_and_subspace ();
3938 pa_call_args (&last_call_desc
);
3939 demand_empty_rest_of_line ();
3942 /* Do the dirty work of building a call descriptor which describes
3943 where the caller placed arguments to a function call. */
3946 pa_call_args (call_desc
)
3947 struct call_desc
*call_desc
;
3950 unsigned int temp
, arg_reloc
;
3952 while (!is_end_of_statement ())
3954 name
= input_line_pointer
;
3955 c
= get_symbol_end ();
3956 /* Process a source argument. */
3957 if ((strncasecmp (name
, "argw", 4) == 0))
3959 temp
= atoi (name
+ 4);
3960 p
= input_line_pointer
;
3962 input_line_pointer
++;
3963 name
= input_line_pointer
;
3964 c
= get_symbol_end ();
3965 arg_reloc
= pa_build_arg_reloc (name
);
3966 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
3968 /* Process a return value. */
3969 else if ((strncasecmp (name
, "rtnval", 6) == 0))
3971 p
= input_line_pointer
;
3973 input_line_pointer
++;
3974 name
= input_line_pointer
;
3975 c
= get_symbol_end ();
3976 arg_reloc
= pa_build_arg_reloc (name
);
3977 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
3981 as_bad ("Invalid .CALL argument: %s", name
);
3983 p
= input_line_pointer
;
3985 if (!is_end_of_statement ())
3986 input_line_pointer
++;
3990 /* Return TRUE if FRAG1 and FRAG2 are the same. */
3993 is_same_frag (frag1
, frag2
)
4000 else if (frag2
== NULL
)
4002 else if (frag1
== frag2
)
4004 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4005 return (is_same_frag (frag1
, frag2
->fr_next
));
4011 /* Build an entry in the UNWIND subspace from the given function
4012 attributes in CALL_INFO. This is not needed for SOM as using
4013 R_ENTRY and R_EXIT relocations allow the linker to handle building
4014 of the unwind spaces. */
4017 pa_build_unwind_subspace (call_info
)
4018 struct call_info
*call_info
;
4021 asection
*seg
, *save_seg
;
4022 subsegT subseg
, save_subseg
;
4026 /* Get into the right seg/subseg. This may involve creating
4027 the seg the first time through. Make sure to have the
4028 old seg/subseg so that we can reset things when we are done. */
4029 subseg
= SUBSEG_UNWIND
;
4030 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4031 if (seg
== ASEC_NULL
)
4033 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4034 bfd_set_section_flags (stdoutput
, seg
,
4035 SEC_READONLY
| SEC_HAS_CONTENTS
4036 | SEC_LOAD
| SEC_RELOC
);
4040 save_subseg
= now_subseg
;
4041 subseg_set (seg
, subseg
);
4044 /* Get some space to hold relocation information for the unwind
4048 /* Relocation info. for start offset of the function. */
4049 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4050 call_info
->start_symbol
, (offsetT
) 0,
4051 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4055 /* Relocation info. for end offset of the function. */
4056 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4057 call_info
->start_symbol
,
4058 call_info
->function_size
,
4059 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4062 unwind
= (char *) &call_info
->ci_unwind
;
4063 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4067 FRAG_APPEND_1_CHAR (c
);
4071 /* Return back to the original segment/subsegment. */
4072 subseg_set (save_seg
, save_subseg
);
4076 /* Process a .CALLINFO pseudo-op. This information is used later
4077 to build unwind descriptors and maybe one day to support
4078 .ENTER and .LEAVE. */
4081 pa_callinfo (unused
)
4087 /* We must have a valid space and subspace. */
4088 pa_check_current_space_and_subspace ();
4090 /* .CALLINFO must appear within a procedure definition. */
4091 if (!within_procedure
)
4092 as_bad (".callinfo is not within a procedure definition");
4094 /* Mark the fact that we found the .CALLINFO for the
4095 current procedure. */
4096 callinfo_found
= TRUE
;
4098 /* Iterate over the .CALLINFO arguments. */
4099 while (!is_end_of_statement ())
4101 name
= input_line_pointer
;
4102 c
= get_symbol_end ();
4103 /* Frame size specification. */
4104 if ((strncasecmp (name
, "frame", 5) == 0))
4106 p
= input_line_pointer
;
4108 input_line_pointer
++;
4109 temp
= get_absolute_expression ();
4110 if ((temp
& 0x3) != 0)
4112 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4116 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4117 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4120 /* Entry register (GR, GR and SR) specifications. */
4121 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4123 p
= input_line_pointer
;
4125 input_line_pointer
++;
4126 temp
= get_absolute_expression ();
4127 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4128 even though %r19 is caller saved. I think this is a bug in
4129 the HP assembler, and we are not going to emulate it. */
4130 if (temp
< 3 || temp
> 18)
4131 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4132 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4134 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4136 p
= input_line_pointer
;
4138 input_line_pointer
++;
4139 temp
= get_absolute_expression ();
4140 /* Similarly the HP assembler takes 31 as the high bound even
4141 though %fr21 is the last callee saved floating point register. */
4142 if (temp
< 12 || temp
> 21)
4143 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4144 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4146 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4148 p
= input_line_pointer
;
4150 input_line_pointer
++;
4151 temp
= get_absolute_expression ();
4153 as_bad ("Value for ENTRY_SR must be 3\n");
4155 /* Note whether or not this function performs any calls. */
4156 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4157 (strncasecmp (name
, "caller", 6) == 0))
4159 p
= input_line_pointer
;
4162 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4164 p
= input_line_pointer
;
4167 /* Should RP be saved into the stack. */
4168 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4170 p
= input_line_pointer
;
4172 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4174 /* Likewise for SP. */
4175 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4177 p
= input_line_pointer
;
4179 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4181 /* Is this an unwindable procedure. If so mark it so
4182 in the unwind descriptor. */
4183 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4185 p
= input_line_pointer
;
4187 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4189 /* Is this an interrupt routine. If so mark it in the
4190 unwind descriptor. */
4191 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4193 p
= input_line_pointer
;
4195 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4197 /* Is this a millicode routine. "millicode" isn't in my
4198 assembler manual, but my copy is old. The HP assembler
4199 accepts it, and there's a place in the unwind descriptor
4200 to drop the information, so we'll accept it too. */
4201 else if ((strncasecmp (name
, "millicode", 9) == 0))
4203 p
= input_line_pointer
;
4205 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4209 as_bad ("Invalid .CALLINFO argument: %s", name
);
4210 *input_line_pointer
= c
;
4212 if (!is_end_of_statement ())
4213 input_line_pointer
++;
4216 demand_empty_rest_of_line ();
4219 /* Switch into the code subspace. */
4225 current_space
= is_defined_space ("$TEXT$");
4227 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
4229 pa_undefine_label ();
4232 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4233 the .comm pseudo-op has the following symtax:
4235 <label> .comm <length>
4237 where <label> is optional and is a symbol whose address will be the start of
4238 a block of memory <length> bytes long. <length> must be an absolute
4239 expression. <length> bytes will be allocated in the current space
4248 label_symbol_struct
*label_symbol
= pa_get_label ();
4251 symbol
= label_symbol
->lss_label
;
4256 size
= get_absolute_expression ();
4260 /* It is incorrect to check S_IS_DEFINED at this point as
4261 the symbol will *always* be defined. FIXME. How to
4262 correctly determine when this label really as been
4264 if (S_GET_VALUE (symbol
))
4266 if (S_GET_VALUE (symbol
) != size
)
4268 as_warn ("Length of .comm \"%s\" is already %ld. Not changed.",
4269 S_GET_NAME (symbol
), S_GET_VALUE (symbol
));
4275 S_SET_VALUE (symbol
, size
);
4276 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4277 S_SET_EXTERNAL (symbol
);
4279 /* colon() has already set the frag to the current location in the
4280 $BSS$ subspace; we need to reset the fragment to the zero address
4282 symbol
->sy_frag
= &zero_address_frag
;
4285 demand_empty_rest_of_line ();
4288 /* Process a .END pseudo-op. */
4294 demand_empty_rest_of_line ();
4297 /* Process a .ENTER pseudo-op. This is not supported. */
4302 /* We must have a valid space and subspace. */
4303 pa_check_current_space_and_subspace ();
4308 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4314 /* We must have a valid space and subspace. */
4315 pa_check_current_space_and_subspace ();
4317 if (!within_procedure
)
4318 as_bad ("Misplaced .entry. Ignored.");
4321 if (!callinfo_found
)
4322 as_bad ("Missing .callinfo.");
4324 demand_empty_rest_of_line ();
4325 within_entry_exit
= TRUE
;
4328 /* SOM defers building of unwind descriptors until the link phase.
4329 The assembler is responsible for creating an R_ENTRY relocation
4330 to mark the beginning of a region and hold the unwind bits, and
4331 for creating an R_EXIT relocation to mark the end of the region.
4333 FIXME. ELF should be using the same conventions! The problem
4334 is an unwind requires too much relocation space. Hmmm. Maybe
4335 if we split the unwind bits up between the relocations which
4336 denote the entry and exit points. */
4337 if (last_call_info
->start_symbol
!= NULL
)
4339 char *where
= frag_more (0);
4341 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4342 NULL
, (offsetT
) 0, NULL
,
4343 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4344 (int *) &last_call_info
->ci_unwind
.descriptor
);
4349 /* Handle a .EQU pseudo-op. */
4355 label_symbol_struct
*label_symbol
= pa_get_label ();
4360 symbol
= label_symbol
->lss_label
;
4362 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4364 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4365 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4370 as_bad (".REG must use a label");
4372 as_bad (".EQU must use a label");
4375 pa_undefine_label ();
4376 demand_empty_rest_of_line ();
4379 /* Helper function. Does processing for the end of a function. This
4380 usually involves creating some relocations or building special
4381 symbols to mark the end of the function. */
4388 where
= frag_more (0);
4390 last_call_info
->function_size
4391 = where
- frag_now
->fr_literal
- S_GET_VALUE (last_call_info
->start_symbol
);
4394 /* Mark the end of the function, stuff away the location of the frag
4395 for the end of the function, and finally call pa_build_unwind_subspace
4396 to add an entry in the unwind table. */
4397 pa_build_unwind_subspace (last_call_info
);
4399 /* SOM defers building of unwind descriptors until the link phase.
4400 The assembler is responsible for creating an R_ENTRY relocation
4401 to mark the beginning of a region and hold the unwind bits, and
4402 for creating an R_EXIT relocation to mark the end of the region.
4404 FIXME. ELF should be using the same conventions! The problem
4405 is an unwind requires too much relocation space. Hmmm. Maybe
4406 if we split the unwind bits up between the relocations which
4407 denote the entry and exit points. */
4408 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4410 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4411 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4415 /* Process a .EXIT pseudo-op. */
4421 /* We must have a valid space and subspace. */
4422 pa_check_current_space_and_subspace ();
4424 if (!within_procedure
)
4425 as_bad (".EXIT must appear within a procedure");
4428 if (!callinfo_found
)
4429 as_bad ("Missing .callinfo");
4432 if (!within_entry_exit
)
4433 as_bad ("No .ENTRY for this .EXIT");
4436 within_entry_exit
= FALSE
;
4441 demand_empty_rest_of_line ();
4444 /* Process a .EXPORT directive. This makes functions external
4445 and provides information such as argument relocation entries
4455 name
= input_line_pointer
;
4456 c
= get_symbol_end ();
4457 /* Make sure the given symbol exists. */
4458 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4460 as_bad ("Cannot define export symbol: %s\n", name
);
4461 p
= input_line_pointer
;
4463 input_line_pointer
++;
4467 /* OK. Set the external bits and process argument relocations. */
4468 S_SET_EXTERNAL (symbol
);
4469 p
= input_line_pointer
;
4471 if (!is_end_of_statement ())
4473 input_line_pointer
++;
4474 pa_type_args (symbol
, 1);
4478 demand_empty_rest_of_line ();
4481 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4484 pa_type_args (symbolP
, is_export
)
4489 unsigned int temp
, arg_reloc
;
4490 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4491 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4493 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4496 input_line_pointer
+= 8;
4497 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4498 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4499 type
= SYMBOL_TYPE_ABSOLUTE
;
4501 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4503 input_line_pointer
+= 4;
4504 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4505 instead one should be IMPORTing/EXPORTing ENTRY types.
4507 Complain if one tries to EXPORT a CODE type since that's never
4508 done. Both GCC and HP C still try to IMPORT CODE types, so
4509 silently fix them to be ENTRY types. */
4510 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4513 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4515 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4516 type
= SYMBOL_TYPE_ENTRY
;
4520 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4521 type
= SYMBOL_TYPE_CODE
;
4524 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4526 input_line_pointer
+= 4;
4527 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4528 type
= SYMBOL_TYPE_DATA
;
4530 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4532 input_line_pointer
+= 5;
4533 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4534 type
= SYMBOL_TYPE_ENTRY
;
4536 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4538 input_line_pointer
+= 9;
4539 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4540 type
= SYMBOL_TYPE_MILLICODE
;
4542 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4544 input_line_pointer
+= 6;
4545 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4546 type
= SYMBOL_TYPE_PLABEL
;
4548 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4550 input_line_pointer
+= 8;
4551 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4552 type
= SYMBOL_TYPE_PRI_PROG
;
4554 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4556 input_line_pointer
+= 8;
4557 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4558 type
= SYMBOL_TYPE_SEC_PROG
;
4561 /* SOM requires much more information about symbol types
4562 than BFD understands. This is how we get this information
4563 to the SOM BFD backend. */
4564 #ifdef obj_set_symbol_type
4565 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4568 /* Now that the type of the exported symbol has been handled,
4569 handle any argument relocation information. */
4570 while (!is_end_of_statement ())
4572 if (*input_line_pointer
== ',')
4573 input_line_pointer
++;
4574 name
= input_line_pointer
;
4575 c
= get_symbol_end ();
4576 /* Argument sources. */
4577 if ((strncasecmp (name
, "argw", 4) == 0))
4579 p
= input_line_pointer
;
4581 input_line_pointer
++;
4582 temp
= atoi (name
+ 4);
4583 name
= input_line_pointer
;
4584 c
= get_symbol_end ();
4585 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4586 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4587 *input_line_pointer
= c
;
4589 /* The return value. */
4590 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4592 p
= input_line_pointer
;
4594 input_line_pointer
++;
4595 name
= input_line_pointer
;
4596 c
= get_symbol_end ();
4597 arg_reloc
= pa_build_arg_reloc (name
);
4598 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4599 *input_line_pointer
= c
;
4601 /* Privelege level. */
4602 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4604 p
= input_line_pointer
;
4606 input_line_pointer
++;
4607 temp
= atoi (input_line_pointer
);
4608 c
= get_symbol_end ();
4609 *input_line_pointer
= c
;
4613 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4614 p
= input_line_pointer
;
4617 if (!is_end_of_statement ())
4618 input_line_pointer
++;
4622 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4623 assembly file must either be defined in the assembly file, or
4624 explicitly IMPORTED from another. */
4633 name
= input_line_pointer
;
4634 c
= get_symbol_end ();
4636 symbol
= symbol_find (name
);
4637 /* Ugh. We might be importing a symbol defined earlier in the file,
4638 in which case all the code below will really screw things up
4639 (set the wrong segment, symbol flags & type, etc). */
4640 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4642 symbol
= symbol_find_or_make (name
);
4643 p
= input_line_pointer
;
4646 if (!is_end_of_statement ())
4648 input_line_pointer
++;
4649 pa_type_args (symbol
, 0);
4653 /* Sigh. To be compatable with the HP assembler and to help
4654 poorly written assembly code, we assign a type based on
4655 the the current segment. Note only BSF_FUNCTION really
4656 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4657 if (now_seg
== text_section
)
4658 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4660 /* If the section is undefined, then the symbol is undefined
4661 Since this is an import, leave the section undefined. */
4662 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4667 /* The symbol was already defined. Just eat everything up to
4668 the end of the current statement. */
4669 while (!is_end_of_statement ())
4670 input_line_pointer
++;
4673 demand_empty_rest_of_line ();
4676 /* Handle a .LABEL pseudo-op. */
4684 name
= input_line_pointer
;
4685 c
= get_symbol_end ();
4687 if (strlen (name
) > 0)
4690 p
= input_line_pointer
;
4695 as_warn ("Missing label name on .LABEL");
4698 if (!is_end_of_statement ())
4700 as_warn ("extra .LABEL arguments ignored.");
4701 ignore_rest_of_line ();
4703 demand_empty_rest_of_line ();
4706 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4712 /* We must have a valid space and subspace. */
4713 pa_check_current_space_and_subspace ();
4718 /* Handle a .ORIGIN pseudo-op. */
4724 /* We must have a valid space and subspace. */
4725 pa_check_current_space_and_subspace ();
4728 pa_undefine_label ();
4731 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4732 is for static functions. FIXME. Should share more code with .EXPORT. */
4741 name
= input_line_pointer
;
4742 c
= get_symbol_end ();
4744 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4746 as_bad ("Cannot define static symbol: %s\n", name
);
4747 p
= input_line_pointer
;
4749 input_line_pointer
++;
4753 S_CLEAR_EXTERNAL (symbol
);
4754 p
= input_line_pointer
;
4756 if (!is_end_of_statement ())
4758 input_line_pointer
++;
4759 pa_type_args (symbol
, 0);
4763 demand_empty_rest_of_line ();
4766 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4767 of a procedure from a syntatical point of view. */
4773 struct call_info
*call_info
;
4775 /* We must have a valid space and subspace. */
4776 pa_check_current_space_and_subspace ();
4778 if (within_procedure
)
4779 as_fatal ("Nested procedures");
4781 /* Reset global variables for new procedure. */
4782 callinfo_found
= FALSE
;
4783 within_procedure
= TRUE
;
4785 /* Create another call_info structure. */
4786 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4789 as_fatal ("Cannot allocate unwind descriptor\n");
4791 bzero (call_info
, sizeof (struct call_info
));
4793 call_info
->ci_next
= NULL
;
4795 if (call_info_root
== NULL
)
4797 call_info_root
= call_info
;
4798 last_call_info
= call_info
;
4802 last_call_info
->ci_next
= call_info
;
4803 last_call_info
= call_info
;
4806 /* set up defaults on call_info structure */
4808 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4809 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4810 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4812 /* If we got a .PROC pseudo-op, we know that the function is defined
4813 locally. Make sure it gets into the symbol table. */
4815 label_symbol_struct
*label_symbol
= pa_get_label ();
4819 if (label_symbol
->lss_label
)
4821 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4822 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4825 as_bad ("Missing function name for .PROC (corrupted label chain)");
4828 last_call_info
->start_symbol
= NULL
;
4831 demand_empty_rest_of_line ();
4834 /* Process the syntatical end of a procedure. Make sure all the
4835 appropriate pseudo-ops were found within the procedure. */
4842 /* We must have a valid space and subspace. */
4843 pa_check_current_space_and_subspace ();
4845 /* If we are within a procedure definition, make sure we've
4846 defined a label for the procedure; handle case where the
4847 label was defined after the .PROC directive.
4849 Note there's not need to diddle with the segment or fragment
4850 for the label symbol in this case. We have already switched
4851 into the new $CODE$ subspace at this point. */
4852 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4854 label_symbol_struct
*label_symbol
= pa_get_label ();
4858 if (label_symbol
->lss_label
)
4860 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4861 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4863 /* Also handle allocation of a fixup to hold the unwind
4864 information when the label appears after the proc/procend. */
4865 if (within_entry_exit
)
4867 char *where
= frag_more (0);
4869 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4870 NULL
, (offsetT
) 0, NULL
,
4871 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4872 (int *) &last_call_info
->ci_unwind
.descriptor
);
4877 as_bad ("Missing function name for .PROC (corrupted label chain)");
4880 as_bad ("Missing function name for .PROC");
4883 if (!within_procedure
)
4884 as_bad ("misplaced .procend");
4886 if (!callinfo_found
)
4887 as_bad ("Missing .callinfo for this procedure");
4889 if (within_entry_exit
)
4890 as_bad ("Missing .EXIT for a .ENTRY");
4892 last_call_info
->function_size
4893 = frag_more (0) - frag_now
->fr_literal
- S_GET_VALUE (last_call_info
->start_symbol
);
4894 within_procedure
= FALSE
;
4895 demand_empty_rest_of_line ();
4896 pa_undefine_label ();
4899 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4900 then create a new space entry to hold the information specified
4901 by the parameters to the .SPACE directive. */
4903 static sd_chain_struct
*
4904 pa_parse_space_stmt (space_name
, create_flag
)
4908 char *name
, *ptemp
, c
;
4909 char loadable
, defined
, private, sort
;
4911 asection
*seg
= NULL
;
4912 sd_chain_struct
*space
;
4914 /* load default values */
4920 if (strcmp (space_name
, "$TEXT$") == 0)
4922 seg
= pa_def_spaces
[0].segment
;
4923 defined
= pa_def_spaces
[0].defined
;
4924 private = pa_def_spaces
[0].private;
4925 sort
= pa_def_spaces
[0].sort
;
4926 spnum
= pa_def_spaces
[0].spnum
;
4928 else if (strcmp (space_name
, "$PRIVATE$") == 0)
4930 seg
= pa_def_spaces
[1].segment
;
4931 defined
= pa_def_spaces
[1].defined
;
4932 private = pa_def_spaces
[1].private;
4933 sort
= pa_def_spaces
[1].sort
;
4934 spnum
= pa_def_spaces
[1].spnum
;
4937 if (!is_end_of_statement ())
4939 print_errors
= FALSE
;
4940 ptemp
= input_line_pointer
+ 1;
4941 /* First see if the space was specified as a number rather than
4942 as a name. According to the PA assembly manual the rest of
4943 the line should be ignored. */
4944 temp
= pa_parse_number (&ptemp
, 0);
4948 input_line_pointer
= ptemp
;
4952 while (!is_end_of_statement ())
4954 input_line_pointer
++;
4955 name
= input_line_pointer
;
4956 c
= get_symbol_end ();
4957 if ((strncasecmp (name
, "spnum", 5) == 0))
4959 *input_line_pointer
= c
;
4960 input_line_pointer
++;
4961 spnum
= get_absolute_expression ();
4963 else if ((strncasecmp (name
, "sort", 4) == 0))
4965 *input_line_pointer
= c
;
4966 input_line_pointer
++;
4967 sort
= get_absolute_expression ();
4969 else if ((strncasecmp (name
, "unloadable", 10) == 0))
4971 *input_line_pointer
= c
;
4974 else if ((strncasecmp (name
, "notdefined", 10) == 0))
4976 *input_line_pointer
= c
;
4979 else if ((strncasecmp (name
, "private", 7) == 0))
4981 *input_line_pointer
= c
;
4986 as_bad ("Invalid .SPACE argument");
4987 *input_line_pointer
= c
;
4988 if (!is_end_of_statement ())
4989 input_line_pointer
++;
4993 print_errors
= TRUE
;
4996 if (create_flag
&& seg
== NULL
)
4997 seg
= subseg_new (space_name
, 0);
4999 /* If create_flag is nonzero, then create the new space with
5000 the attributes computed above. Else set the values in
5001 an already existing space -- this can only happen for
5002 the first occurence of a built-in space. */
5004 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5005 private, sort
, seg
, 1);
5008 space
= is_defined_space (space_name
);
5009 SPACE_SPNUM (space
) = spnum
;
5010 SPACE_DEFINED (space
) = defined
& 1;
5011 SPACE_USER_DEFINED (space
) = 1;
5014 #ifdef obj_set_section_attributes
5015 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5021 /* Handle a .SPACE pseudo-op; this switches the current space to the
5022 given space, creating the new space if necessary. */
5028 char *name
, c
, *space_name
, *save_s
;
5030 sd_chain_struct
*sd_chain
;
5032 if (within_procedure
)
5034 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5035 ignore_rest_of_line ();
5039 /* Check for some of the predefined spaces. FIXME: most of the code
5040 below is repeated several times, can we extract the common parts
5041 and place them into a subroutine or something similar? */
5042 /* FIXME Is this (and the next IF stmt) really right?
5043 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5044 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5046 input_line_pointer
+= 6;
5047 sd_chain
= is_defined_space ("$TEXT$");
5048 if (sd_chain
== NULL
)
5049 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5050 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5051 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5053 current_space
= sd_chain
;
5054 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5056 = pa_subsegment_to_subspace (text_section
,
5057 sd_chain
->sd_last_subseg
);
5058 demand_empty_rest_of_line ();
5061 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5063 input_line_pointer
+= 9;
5064 sd_chain
= is_defined_space ("$PRIVATE$");
5065 if (sd_chain
== NULL
)
5066 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5067 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5068 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5070 current_space
= sd_chain
;
5071 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5073 = pa_subsegment_to_subspace (data_section
,
5074 sd_chain
->sd_last_subseg
);
5075 demand_empty_rest_of_line ();
5078 if (!strncasecmp (input_line_pointer
,
5079 GDB_DEBUG_SPACE_NAME
,
5080 strlen (GDB_DEBUG_SPACE_NAME
)))
5082 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5083 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5084 if (sd_chain
== NULL
)
5085 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5086 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5087 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5089 current_space
= sd_chain
;
5092 asection
*gdb_section
5093 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5095 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5097 = pa_subsegment_to_subspace (gdb_section
,
5098 sd_chain
->sd_last_subseg
);
5100 demand_empty_rest_of_line ();
5104 /* It could be a space specified by number. */
5106 save_s
= input_line_pointer
;
5107 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5109 if ((sd_chain
= pa_find_space_by_number (temp
)))
5111 current_space
= sd_chain
;
5113 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5115 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5116 sd_chain
->sd_last_subseg
);
5117 demand_empty_rest_of_line ();
5122 /* Not a number, attempt to create a new space. */
5124 input_line_pointer
= save_s
;
5125 name
= input_line_pointer
;
5126 c
= get_symbol_end ();
5127 space_name
= xmalloc (strlen (name
) + 1);
5128 strcpy (space_name
, name
);
5129 *input_line_pointer
= c
;
5131 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5132 current_space
= sd_chain
;
5134 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5135 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5136 sd_chain
->sd_last_subseg
);
5137 demand_empty_rest_of_line ();
5141 /* Switch to a new space. (I think). FIXME. */
5150 sd_chain_struct
*space
;
5152 name
= input_line_pointer
;
5153 c
= get_symbol_end ();
5154 space
= is_defined_space (name
);
5158 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5161 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5163 *input_line_pointer
= c
;
5164 demand_empty_rest_of_line ();
5167 /* If VALUE is an exact power of two between zero and 2^31, then
5168 return log2 (VALUE). Else return -1. */
5176 while ((1 << shift
) != value
&& shift
< 32)
5185 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5186 given subspace, creating the new subspace if necessary.
5188 FIXME. Should mirror pa_space more closely, in particular how
5189 they're broken up into subroutines. */
5192 pa_subspace (unused
)
5195 char *name
, *ss_name
, *alias
, c
;
5196 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5197 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5198 sd_chain_struct
*space
;
5199 ssd_chain_struct
*ssd
;
5202 if (current_space
== NULL
)
5203 as_fatal ("Must be in a space before changing or declaring subspaces.\n");
5205 if (within_procedure
)
5207 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5208 ignore_rest_of_line ();
5212 name
= input_line_pointer
;
5213 c
= get_symbol_end ();
5214 ss_name
= xmalloc (strlen (name
) + 1);
5215 strcpy (ss_name
, name
);
5216 *input_line_pointer
= c
;
5218 /* Load default values. */
5231 space
= current_space
;
5232 ssd
= is_defined_subspace (ss_name
);
5233 /* Allow user to override the builtin attributes of subspaces. But
5234 only allow the attributes to be changed once! */
5235 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5237 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5238 current_subspace
= ssd
;
5239 if (!is_end_of_statement ())
5240 as_warn ("Parameters of an existing subspace can\'t be modified");
5241 demand_empty_rest_of_line ();
5246 /* A new subspace. Load default values if it matches one of
5247 the builtin subspaces. */
5249 while (pa_def_subspaces
[i
].name
)
5251 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5253 loadable
= pa_def_subspaces
[i
].loadable
;
5254 common
= pa_def_subspaces
[i
].common
;
5255 dup_common
= pa_def_subspaces
[i
].dup_common
;
5256 code_only
= pa_def_subspaces
[i
].code_only
;
5257 zero
= pa_def_subspaces
[i
].zero
;
5258 space_index
= pa_def_subspaces
[i
].space_index
;
5259 alignment
= pa_def_subspaces
[i
].alignment
;
5260 quadrant
= pa_def_subspaces
[i
].quadrant
;
5261 access
= pa_def_subspaces
[i
].access
;
5262 sort
= pa_def_subspaces
[i
].sort
;
5263 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5264 alias
= pa_def_subspaces
[i
].alias
;
5271 /* We should be working with a new subspace now. Fill in
5272 any information as specified by the user. */
5273 if (!is_end_of_statement ())
5275 input_line_pointer
++;
5276 while (!is_end_of_statement ())
5278 name
= input_line_pointer
;
5279 c
= get_symbol_end ();
5280 if ((strncasecmp (name
, "quad", 4) == 0))
5282 *input_line_pointer
= c
;
5283 input_line_pointer
++;
5284 quadrant
= get_absolute_expression ();
5286 else if ((strncasecmp (name
, "align", 5) == 0))
5288 *input_line_pointer
= c
;
5289 input_line_pointer
++;
5290 alignment
= get_absolute_expression ();
5291 if (log2 (alignment
) == -1)
5293 as_bad ("Alignment must be a power of 2");
5297 else if ((strncasecmp (name
, "access", 6) == 0))
5299 *input_line_pointer
= c
;
5300 input_line_pointer
++;
5301 access
= get_absolute_expression ();
5303 else if ((strncasecmp (name
, "sort", 4) == 0))
5305 *input_line_pointer
= c
;
5306 input_line_pointer
++;
5307 sort
= get_absolute_expression ();
5309 else if ((strncasecmp (name
, "code_only", 9) == 0))
5311 *input_line_pointer
= c
;
5314 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5316 *input_line_pointer
= c
;
5319 else if ((strncasecmp (name
, "common", 6) == 0))
5321 *input_line_pointer
= c
;
5324 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5326 *input_line_pointer
= c
;
5329 else if ((strncasecmp (name
, "zero", 4) == 0))
5331 *input_line_pointer
= c
;
5334 else if ((strncasecmp (name
, "first", 5) == 0))
5335 as_bad ("FIRST not supported as a .SUBSPACE argument");
5337 as_bad ("Invalid .SUBSPACE argument");
5338 if (!is_end_of_statement ())
5339 input_line_pointer
++;
5343 /* Compute a reasonable set of BFD flags based on the information
5344 in the .subspace directive. */
5345 applicable
= bfd_applicable_section_flags (stdoutput
);
5348 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5351 if (common
|| dup_common
)
5352 flags
|= SEC_IS_COMMON
;
5354 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5356 /* This is a zero-filled subspace (eg BSS). */
5358 flags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
5360 applicable
&= flags
;
5362 /* If this is an existing subspace, then we want to use the
5363 segment already associated with the subspace.
5365 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5366 lots of sections. It might be a problem in the PA ELF
5367 code, I do not know yet. For now avoid creating anything
5368 but the "standard" sections for ELF. */
5370 section
= ssd
->ssd_seg
;
5372 section
= subseg_new (alias
, 0);
5373 else if (!alias
&& USE_ALIASES
)
5375 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5376 demand_empty_rest_of_line ();
5380 section
= subseg_new (ss_name
, 0);
5382 /* Now set the flags. */
5383 bfd_set_section_flags (stdoutput
, section
, applicable
);
5385 /* Record any alignment request for this section. */
5386 record_alignment (section
, log2 (alignment
));
5388 /* Set the starting offset for this section. */
5389 bfd_set_section_vma (stdoutput
, section
,
5390 pa_subspace_start (space
, quadrant
));
5392 /* Now that all the flags are set, update an existing subspace,
5393 or create a new one. */
5396 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5397 code_only
, common
, dup_common
,
5398 sort
, zero
, access
, space_index
,
5399 alignment
, quadrant
,
5402 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5404 dup_common
, zero
, sort
,
5405 access
, space_index
,
5406 alignment
, quadrant
, section
);
5408 demand_empty_rest_of_line ();
5409 current_subspace
->ssd_seg
= section
;
5410 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5412 SUBSPACE_DEFINED (current_subspace
) = 1;
5416 /* Create default space and subspace dictionaries. */
5423 space_dict_root
= NULL
;
5424 space_dict_last
= NULL
;
5427 while (pa_def_spaces
[i
].name
)
5431 /* Pick the right name to use for the new section. */
5432 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5433 name
= pa_def_spaces
[i
].alias
;
5435 name
= pa_def_spaces
[i
].name
;
5437 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5438 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5439 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5440 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5441 pa_def_spaces
[i
].segment
, 0);
5446 while (pa_def_subspaces
[i
].name
)
5449 int applicable
, subsegment
;
5450 asection
*segment
= NULL
;
5451 sd_chain_struct
*space
;
5453 /* Pick the right name for the new section and pick the right
5454 subsegment number. */
5455 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5457 name
= pa_def_subspaces
[i
].alias
;
5458 subsegment
= pa_def_subspaces
[i
].subsegment
;
5462 name
= pa_def_subspaces
[i
].name
;
5466 /* Create the new section. */
5467 segment
= subseg_new (name
, subsegment
);
5470 /* For SOM we want to replace the standard .text, .data, and .bss
5471 sections with our own. We also want to set BFD flags for
5472 all the built-in subspaces. */
5473 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5475 text_section
= segment
;
5476 applicable
= bfd_applicable_section_flags (stdoutput
);
5477 bfd_set_section_flags (stdoutput
, segment
,
5478 applicable
& (SEC_ALLOC
| SEC_LOAD
5479 | SEC_RELOC
| SEC_CODE
5481 | SEC_HAS_CONTENTS
));
5483 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5485 data_section
= segment
;
5486 applicable
= bfd_applicable_section_flags (stdoutput
);
5487 bfd_set_section_flags (stdoutput
, segment
,
5488 applicable
& (SEC_ALLOC
| SEC_LOAD
5490 | SEC_HAS_CONTENTS
));
5494 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5496 bss_section
= segment
;
5497 applicable
= bfd_applicable_section_flags (stdoutput
);
5498 bfd_set_section_flags (stdoutput
, segment
,
5499 applicable
& SEC_ALLOC
);
5501 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5503 applicable
= bfd_applicable_section_flags (stdoutput
);
5504 bfd_set_section_flags (stdoutput
, segment
,
5505 applicable
& (SEC_ALLOC
| SEC_LOAD
5508 | SEC_HAS_CONTENTS
));
5510 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5512 applicable
= bfd_applicable_section_flags (stdoutput
);
5513 bfd_set_section_flags (stdoutput
, segment
,
5514 applicable
& (SEC_ALLOC
| SEC_LOAD
5517 | SEC_HAS_CONTENTS
));
5520 /* Find the space associated with this subspace. */
5521 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5522 def_space_index
].segment
);
5525 as_fatal ("Internal error: Unable to find containing space for %s.",
5526 pa_def_subspaces
[i
].name
);
5529 create_new_subspace (space
, name
,
5530 pa_def_subspaces
[i
].loadable
,
5531 pa_def_subspaces
[i
].code_only
,
5532 pa_def_subspaces
[i
].common
,
5533 pa_def_subspaces
[i
].dup_common
,
5534 pa_def_subspaces
[i
].zero
,
5535 pa_def_subspaces
[i
].sort
,
5536 pa_def_subspaces
[i
].access
,
5537 pa_def_subspaces
[i
].space_index
,
5538 pa_def_subspaces
[i
].alignment
,
5539 pa_def_subspaces
[i
].quadrant
,
5547 /* Create a new space NAME, with the appropriate flags as defined
5548 by the given parameters. */
5550 static sd_chain_struct
*
5551 create_new_space (name
, spnum
, loadable
, defined
, private,
5552 sort
, seg
, user_defined
)
5562 sd_chain_struct
*chain_entry
;
5564 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5566 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5569 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5570 strcpy (SPACE_NAME (chain_entry
), name
);
5571 SPACE_DEFINED (chain_entry
) = defined
;
5572 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5573 SPACE_SPNUM (chain_entry
) = spnum
;
5575 chain_entry
->sd_seg
= seg
;
5576 chain_entry
->sd_last_subseg
= -1;
5577 chain_entry
->sd_subspaces
= NULL
;
5578 chain_entry
->sd_next
= NULL
;
5580 /* Find spot for the new space based on its sort key. */
5581 if (!space_dict_last
)
5582 space_dict_last
= chain_entry
;
5584 if (space_dict_root
== NULL
)
5585 space_dict_root
= chain_entry
;
5588 sd_chain_struct
*chain_pointer
;
5589 sd_chain_struct
*prev_chain_pointer
;
5591 chain_pointer
= space_dict_root
;
5592 prev_chain_pointer
= NULL
;
5594 while (chain_pointer
)
5596 prev_chain_pointer
= chain_pointer
;
5597 chain_pointer
= chain_pointer
->sd_next
;
5600 /* At this point we've found the correct place to add the new
5601 entry. So add it and update the linked lists as appropriate. */
5602 if (prev_chain_pointer
)
5604 chain_entry
->sd_next
= chain_pointer
;
5605 prev_chain_pointer
->sd_next
= chain_entry
;
5609 space_dict_root
= chain_entry
;
5610 chain_entry
->sd_next
= chain_pointer
;
5613 if (chain_entry
->sd_next
== NULL
)
5614 space_dict_last
= chain_entry
;
5617 /* This is here to catch predefined spaces which do not get
5618 modified by the user's input. Another call is found at
5619 the bottom of pa_parse_space_stmt to handle cases where
5620 the user modifies a predefined space. */
5621 #ifdef obj_set_section_attributes
5622 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5628 /* Create a new subspace NAME, with the appropriate flags as defined
5629 by the given parameters.
5631 Add the new subspace to the subspace dictionary chain in numerical
5632 order as defined by the SORT entries. */
5634 static ssd_chain_struct
*
5635 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5636 dup_common
, is_zero
, sort
, access
, space_index
,
5637 alignment
, quadrant
, seg
)
5638 sd_chain_struct
*space
;
5640 int loadable
, code_only
, common
, dup_common
, is_zero
;
5648 ssd_chain_struct
*chain_entry
;
5650 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5652 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5654 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5655 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5657 /* Initialize subspace_defined. When we hit a .subspace directive
5658 we'll set it to 1 which "locks-in" the subspace attributes. */
5659 SUBSPACE_DEFINED (chain_entry
) = 0;
5661 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5662 chain_entry
->ssd_seg
= seg
;
5663 chain_entry
->ssd_next
= NULL
;
5665 /* Find spot for the new subspace based on its sort key. */
5666 if (space
->sd_subspaces
== NULL
)
5667 space
->sd_subspaces
= chain_entry
;
5670 ssd_chain_struct
*chain_pointer
;
5671 ssd_chain_struct
*prev_chain_pointer
;
5673 chain_pointer
= space
->sd_subspaces
;
5674 prev_chain_pointer
= NULL
;
5676 while (chain_pointer
)
5678 prev_chain_pointer
= chain_pointer
;
5679 chain_pointer
= chain_pointer
->ssd_next
;
5682 /* Now we have somewhere to put the new entry. Insert it and update
5684 if (prev_chain_pointer
)
5686 chain_entry
->ssd_next
= chain_pointer
;
5687 prev_chain_pointer
->ssd_next
= chain_entry
;
5691 space
->sd_subspaces
= chain_entry
;
5692 chain_entry
->ssd_next
= chain_pointer
;
5696 #ifdef obj_set_subsection_attributes
5697 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5704 /* Update the information for the given subspace based upon the
5705 various arguments. Return the modified subspace chain entry. */
5707 static ssd_chain_struct
*
5708 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5709 zero
, access
, space_index
, alignment
, quadrant
, section
)
5710 sd_chain_struct
*space
;
5724 ssd_chain_struct
*chain_entry
;
5726 chain_entry
= is_defined_subspace (name
);
5728 #ifdef obj_set_subsection_attributes
5729 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5736 /* Return the space chain entry for the space with the name NAME or
5737 NULL if no such space exists. */
5739 static sd_chain_struct
*
5740 is_defined_space (name
)
5743 sd_chain_struct
*chain_pointer
;
5745 for (chain_pointer
= space_dict_root
;
5747 chain_pointer
= chain_pointer
->sd_next
)
5749 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5750 return chain_pointer
;
5753 /* No mapping from segment to space was found. Return NULL. */
5757 /* Find and return the space associated with the given seg. If no mapping
5758 from the given seg to a space is found, then return NULL.
5760 Unlike subspaces, the number of spaces is not expected to grow much,
5761 so a linear exhaustive search is OK here. */
5763 static sd_chain_struct
*
5764 pa_segment_to_space (seg
)
5767 sd_chain_struct
*space_chain
;
5769 /* Walk through each space looking for the correct mapping. */
5770 for (space_chain
= space_dict_root
;
5772 space_chain
= space_chain
->sd_next
)
5774 if (space_chain
->sd_seg
== seg
)
5778 /* Mapping was not found. Return NULL. */
5782 /* Return the space chain entry for the subspace with the name NAME or
5783 NULL if no such subspace exists.
5785 Uses a linear search through all the spaces and subspaces, this may
5786 not be appropriate if we ever being placing each function in its
5789 static ssd_chain_struct
*
5790 is_defined_subspace (name
)
5793 sd_chain_struct
*space_chain
;
5794 ssd_chain_struct
*subspace_chain
;
5796 /* Walk through each space. */
5797 for (space_chain
= space_dict_root
;
5799 space_chain
= space_chain
->sd_next
)
5801 /* Walk through each subspace looking for a name which matches. */
5802 for (subspace_chain
= space_chain
->sd_subspaces
;
5804 subspace_chain
= subspace_chain
->ssd_next
)
5805 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5806 return subspace_chain
;
5809 /* Subspace wasn't found. Return NULL. */
5813 /* Find and return the subspace associated with the given seg. If no
5814 mapping from the given seg to a subspace is found, then return NULL.
5816 If we ever put each procedure/function within its own subspace
5817 (to make life easier on the compiler and linker), then this will have
5818 to become more efficient. */
5820 static ssd_chain_struct
*
5821 pa_subsegment_to_subspace (seg
, subseg
)
5825 sd_chain_struct
*space_chain
;
5826 ssd_chain_struct
*subspace_chain
;
5828 /* Walk through each space. */
5829 for (space_chain
= space_dict_root
;
5831 space_chain
= space_chain
->sd_next
)
5833 if (space_chain
->sd_seg
== seg
)
5835 /* Walk through each subspace within each space looking for
5836 the correct mapping. */
5837 for (subspace_chain
= space_chain
->sd_subspaces
;
5839 subspace_chain
= subspace_chain
->ssd_next
)
5840 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5841 return subspace_chain
;
5845 /* No mapping from subsegment to subspace found. Return NULL. */
5849 /* Given a number, try and find a space with the name number.
5851 Return a pointer to a space dictionary chain entry for the space
5852 that was found or NULL on failure. */
5854 static sd_chain_struct
*
5855 pa_find_space_by_number (number
)
5858 sd_chain_struct
*space_chain
;
5860 for (space_chain
= space_dict_root
;
5862 space_chain
= space_chain
->sd_next
)
5864 if (SPACE_SPNUM (space_chain
) == number
)
5868 /* No appropriate space found. Return NULL. */
5872 /* Return the starting address for the given subspace. If the starting
5873 address is unknown then return zero. */
5876 pa_subspace_start (space
, quadrant
)
5877 sd_chain_struct
*space
;
5880 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5881 is not correct for the PA OSF1 port. */
5882 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5884 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5890 /* FIXME. Needs documentation. */
5892 pa_next_subseg (space
)
5893 sd_chain_struct
*space
;
5896 space
->sd_last_subseg
++;
5897 return space
->sd_last_subseg
;
5900 /* Helper function for pa_stringer. Used to find the end of
5907 unsigned int c
= *s
& CHAR_MASK
;
5909 /* We must have a valid space and subspace. */
5910 pa_check_current_space_and_subspace ();
5923 /* Handle a .STRING type pseudo-op. */
5926 pa_stringer (append_zero
)
5929 char *s
, num_buf
[4];
5933 /* Preprocess the string to handle PA-specific escape sequences.
5934 For example, \xDD where DD is a hexidecimal number should be
5935 changed to \OOO where OOO is an octal number. */
5937 /* Skip the opening quote. */
5938 s
= input_line_pointer
+ 1;
5940 while (is_a_char (c
= pa_stringer_aux (s
++)))
5947 /* Handle \x<num>. */
5950 unsigned int number
;
5955 /* Get pas the 'x'. */
5957 for (num_digit
= 0, number
= 0, dg
= *s
;
5959 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
5960 || (dg
>= 'A' && dg
<= 'F'));
5964 number
= number
* 16 + dg
- '0';
5965 else if (dg
>= 'a' && dg
<= 'f')
5966 number
= number
* 16 + dg
- 'a' + 10;
5968 number
= number
* 16 + dg
- 'A' + 10;
5978 sprintf (num_buf
, "%02o", number
);
5981 sprintf (num_buf
, "%03o", number
);
5984 for (i
= 0; i
<= num_digit
; i
++)
5985 s_start
[i
] = num_buf
[i
];
5989 /* This might be a "\"", skip over the escaped char. */
5996 stringer (append_zero
);
5997 pa_undefine_label ();
6000 /* Handle a .VERSION pseudo-op. */
6007 pa_undefine_label ();
6010 /* Handle a .COPYRIGHT pseudo-op. */
6013 pa_copyright (unused
)
6017 pa_undefine_label ();
6020 /* Just like a normal cons, but when finished we have to undefine
6021 the latest space label. */
6028 pa_undefine_label ();
6031 /* Switch to the data space. As usual delete our label. */
6037 current_space
= is_defined_space ("$PRIVATE$");
6039 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6041 pa_undefine_label ();
6044 /* Like float_cons, but we need to undefine our label. */
6047 pa_float_cons (float_type
)
6050 float_cons (float_type
);
6051 pa_undefine_label ();
6054 /* Like s_fill, but delete our label when finished. */
6060 /* We must have a valid space and subspace. */
6061 pa_check_current_space_and_subspace ();
6064 pa_undefine_label ();
6067 /* Like lcomm, but delete our label when finished. */
6070 pa_lcomm (needs_align
)
6073 /* We must have a valid space and subspace. */
6074 pa_check_current_space_and_subspace ();
6076 s_lcomm (needs_align
);
6077 pa_undefine_label ();
6080 /* Like lsym, but delete our label when finished. */
6086 /* We must have a valid space and subspace. */
6087 pa_check_current_space_and_subspace ();
6090 pa_undefine_label ();
6093 /* Switch to the text space. Like s_text, but delete our
6094 label when finished. */
6099 current_space
= is_defined_space ("$TEXT$");
6101 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6104 pa_undefine_label ();
6107 /* On the PA relocations which involve function symbols must not be
6108 adjusted. This so that the linker can know when/how to create argument
6109 relocation stubs for indirect calls and calls to static functions.
6111 "T" field selectors create DLT relative fixups for accessing
6112 globals and statics in PIC code; each DLT relative fixup creates
6113 an entry in the DLT table. The entries contain the address of
6114 the final target (eg accessing "foo" would create a DLT entry
6115 with the address of "foo").
6117 Unfortunately, the HP linker doesn't take into account any addend
6118 when generating the DLT; so accessing $LIT$+8 puts the address of
6119 $LIT$ into the DLT rather than the address of $LIT$+8.
6121 The end result is we can't perform relocation symbol reductions for
6122 any fixup which creates entries in the DLT (eg they use "T" field
6125 Reject reductions involving symbols with external scope; such
6126 reductions make life a living hell for object file editors.
6128 FIXME. Also reject R_HPPA relocations which are 32 bits
6129 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6130 needs to generate relocations to push the addend and symbol value
6131 onto the stack, add them, then pop the value off the stack and
6132 use it in a relocation -- yuk. */
6135 hppa_fix_adjustable (fixp
)
6138 struct hppa_fix_struct
*hppa_fix
;
6140 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6143 /* Reject reductions of symbols in 32bit relocs. */
6144 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6148 /* Reject reductions of symbols in DLT relative relocs. */
6149 if (hppa_fix
->fx_r_field
== e_tsel
6150 || hppa_fix
->fx_r_field
== e_ltsel
6151 || hppa_fix
->fx_r_field
== e_rtsel
)
6154 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6157 /* Reject reductions of function symbols. */
6158 if (fixp
->fx_addsy
== 0
6159 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6165 /* Return nonzero if the fixup in FIXP will require a relocation,
6166 even it if appears that the fixup could be completely handled
6170 hppa_force_relocation (fixp
)
6173 struct hppa_fix_struct
*hppa_fixp
;
6175 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6177 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
)
6181 #define stub_needed(CALLER, CALLEE) \
6182 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6184 /* It is necessary to force PC-relative calls/jumps to have a relocation
6185 entry if they're going to need either a argument relocation or long
6186 call stub. FIXME. Can't we need the same for absolute calls? */
6187 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6188 && (stub_needed (((obj_symbol_type
*)
6189 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6190 hppa_fixp
->fx_arg_reloc
)))
6195 /* No need (yet) to force another relocations to be emitted. */
6199 /* Now for some ELF specific code. FIXME. */
6201 /* For ELF, this function serves one purpose: to setup the st_size
6202 field of STT_FUNC symbols. */
6205 elf_hppa_final_processing ()
6207 struct call_info
*call_info_pointer
;
6209 for (call_info_pointer
= call_info_root
;
6211 call_info_pointer
= call_info_pointer
->ci_next
)
6213 elf_symbol_type
*esym
6214 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6215 esym
->internal_elf_sym
.st_size
= call_info_pointer
->function_size
;