1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "bfd/libhppa.h"
31 #include "bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".PARISC.unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type
;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type
;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type
;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type
;
87 /* This apparently isn't in older versions of hpux reloc.h. */
89 #define R_DLT_REL 0x78
93 /* Various structures and types used internally in tc-hppa.c. */
95 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
99 unsigned int cannot_unwind
:1;
100 unsigned int millicode
:1;
101 unsigned int millicode_save_rest
:1;
102 unsigned int region_desc
:2;
103 unsigned int save_sr
:2;
104 unsigned int entry_fr
:4;
105 unsigned int entry_gr
:5;
106 unsigned int args_stored
:1;
107 unsigned int call_fr
:5;
108 unsigned int call_gr
:5;
109 unsigned int save_sp
:1;
110 unsigned int save_rp
:1;
111 unsigned int save_rp_in_frame
:1;
112 unsigned int extn_ptr_defined
:1;
113 unsigned int cleanup_defined
:1;
115 unsigned int hpe_interrupt_marker
:1;
116 unsigned int hpux_interrupt_marker
:1;
117 unsigned int reserved
:3;
118 unsigned int frame_size
:27;
123 /* Starting and ending offsets of the region described by
125 unsigned int start_offset
;
126 unsigned int end_offset
;
127 struct unwind_desc descriptor
;
130 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
131 control the entry and exit code they generate. It is also used in
132 creation of the correct stack unwind descriptors.
134 NOTE: GAS does not support .enter and .leave for the generation of
135 prologues and epilogues. FIXME.
137 The fields in structure roughly correspond to the arguments available on the
138 .callinfo pseudo-op. */
142 /* The unwind descriptor being built. */
143 struct unwind_table ci_unwind
;
145 /* Name of this function. */
146 symbolS
*start_symbol
;
148 /* (temporary) symbol used to mark the end of this function. */
151 /* Next entry in the chain. */
152 struct call_info
*ci_next
;
155 /* Operand formats for FP instructions. Note not all FP instructions
156 allow all four formats to be used (for example fmpysub only allows
160 SGL
, DBL
, ILLEGAL_FMT
, QUAD
164 /* This fully describes the symbol types which may be attached to
165 an EXPORT or IMPORT directive. Only SOM uses this formation
166 (ELF has no need for it). */
170 SYMBOL_TYPE_ABSOLUTE
,
174 SYMBOL_TYPE_MILLICODE
,
176 SYMBOL_TYPE_PRI_PROG
,
177 SYMBOL_TYPE_SEC_PROG
,
181 /* This structure contains information needed to assemble
182 individual instructions. */
185 /* Holds the opcode after parsing by pa_ip. */
186 unsigned long opcode
;
188 /* Holds an expression associated with the current instruction. */
191 /* Does this instruction use PC-relative addressing. */
194 /* Floating point formats for operand1 and operand2. */
195 fp_operand_format fpof1
;
196 fp_operand_format fpof2
;
198 /* Holds the field selector for this instruction
199 (for example L%, LR%, etc). */
202 /* Holds any argument relocation bits associated with this
203 instruction. (instruction should be some sort of call). */
206 /* The format specification for this instruction. */
209 /* The relocation (if any) associated with this instruction. */
213 /* PA-89 floating point registers are arranged like this:
216 +--------------+--------------+
217 | 0 or 16L | 16 or 16R |
218 +--------------+--------------+
219 | 1 or 17L | 17 or 17R |
220 +--------------+--------------+
228 +--------------+--------------+
229 | 14 or 30L | 30 or 30R |
230 +--------------+--------------+
231 | 15 or 31L | 31 or 31R |
232 +--------------+--------------+
235 The following is a version of pa_parse_number that
236 handles the L/R notation and returns the correct
237 value to put into the instruction register field.
238 The correct value to put into the instruction is
239 encoded in the structure 'pa_11_fp_reg_struct'. */
241 struct pa_11_fp_reg_struct
243 /* The register number. */
250 /* Additional information needed to build argument relocation stubs. */
253 /* The argument relocation specification. */
254 unsigned int arg_reloc
;
256 /* Number of arguments. */
257 unsigned int arg_count
;
260 /* This structure defines an entry in the subspace dictionary
263 struct subspace_dictionary_chain
265 /* Nonzero if this space has been defined by the user code. */
266 unsigned int ssd_defined
;
268 /* Name of this subspace. */
271 /* GAS segment and subsegment associated with this subspace. */
275 /* Next space in the subspace dictionary chain. */
276 struct subspace_dictionary_chain
*ssd_next
;
279 typedef struct subspace_dictionary_chain ssd_chain_struct
;
281 /* This structure defines an entry in the subspace dictionary
284 struct space_dictionary_chain
286 /* Nonzero if this space has been defined by the user code or
287 as a default space. */
288 unsigned int sd_defined
;
290 /* Nonzero if this spaces has been defined by the user code. */
291 unsigned int sd_user_defined
;
293 /* The space number (or index). */
294 unsigned int sd_spnum
;
296 /* The name of this subspace. */
299 /* GAS segment to which this subspace corresponds. */
302 /* Current subsegment number being used. */
305 /* The chain of subspaces contained within this space. */
306 ssd_chain_struct
*sd_subspaces
;
308 /* The next entry in the space dictionary chain. */
309 struct space_dictionary_chain
*sd_next
;
312 typedef struct space_dictionary_chain sd_chain_struct
;
314 /* Structure for previous label tracking. Needed so that alignments,
315 callinfo declarations, etc can be easily attached to a particular
317 typedef struct label_symbol_struct
319 struct symbol
*lss_label
;
320 sd_chain_struct
*lss_space
;
321 struct label_symbol_struct
*lss_next
;
325 /* This structure defines attributes of the default subspace
326 dictionary entries. */
328 struct default_subspace_dict
330 /* Name of the subspace. */
333 /* FIXME. Is this still needed? */
336 /* Nonzero if this subspace is loadable. */
339 /* Nonzero if this subspace contains only code. */
342 /* Nonzero if this is a common subspace. */
345 /* Nonzero if this is a common subspace which allows symbols
346 to be multiply defined. */
349 /* Nonzero if this subspace should be zero filled. */
352 /* Sort key for this subspace. */
355 /* Access control bits for this subspace. Can represent RWX access
356 as well as privilege level changes for gateways. */
359 /* Index of containing space. */
362 /* Alignment (in bytes) of this subspace. */
365 /* Quadrant within space where this subspace should be loaded. */
368 /* An index into the default spaces array. */
371 /* An alias for this section (or NULL if no alias exists). */
374 /* Subsegment associated with this subspace. */
378 /* This structure defines attributes of the default space
379 dictionary entries. */
381 struct default_space_dict
383 /* Name of the space. */
386 /* Space number. It is possible to identify spaces within
387 assembly code numerically! */
390 /* Nonzero if this space is loadable. */
393 /* Nonzero if this space is "defined". FIXME is still needed */
396 /* Nonzero if this space can not be shared. */
399 /* Sort key for this space. */
402 /* Segment associated with this space. */
405 /* An alias for this section (or NULL if no alias exists). */
409 /* Extra information needed to perform fixups (relocations) on the PA. */
410 struct hppa_fix_struct
412 /* The field selector. */
413 enum hppa_reloc_field_selector_type fx_r_field
;
418 /* Format of fixup. */
421 /* Argument relocation bits. */
424 /* The segment this fixup appears in. */
428 /* Structure to hold information about predefined registers. */
436 /* This structure defines the mapping from a FP condition string
437 to a condition number which can be recorded in an instruction. */
444 /* This structure defines a mapping from a field selector
445 string to a field selector type. */
446 struct selector_entry
452 /* Prototypes for functions local to tc-hppa.c. */
454 static void pa_check_current_space_and_subspace
PARAMS ((void));
455 static fp_operand_format pa_parse_fp_format
PARAMS ((char **s
));
456 static void pa_cons
PARAMS ((int));
457 static void pa_data
PARAMS ((int));
458 static void pa_float_cons
PARAMS ((int));
459 static void pa_fill
PARAMS ((int));
460 static void pa_lcomm
PARAMS ((int));
461 static void pa_lsym
PARAMS ((int));
462 static void pa_stringer
PARAMS ((int));
463 static void pa_text
PARAMS ((int));
464 static void pa_version
PARAMS ((int));
465 static int pa_parse_fp_cmp_cond
PARAMS ((char **));
466 static int get_expression
PARAMS ((char *));
467 static int pa_get_absolute_expression
PARAMS ((struct pa_it
*, char **));
468 static int evaluate_absolute
PARAMS ((struct pa_it
*));
469 static unsigned int pa_build_arg_reloc
PARAMS ((char *));
470 static unsigned int pa_align_arg_reloc
PARAMS ((unsigned int, unsigned int));
471 static int pa_parse_nullif
PARAMS ((char **));
472 static int pa_parse_nonneg_cmpsub_cmpltr
PARAMS ((char **, int));
473 static int pa_parse_neg_cmpsub_cmpltr
PARAMS ((char **, int));
474 static int pa_parse_neg_add_cmpltr
PARAMS ((char **, int));
475 static int pa_parse_nonneg_add_cmpltr
PARAMS ((char **, int));
476 static void pa_align
PARAMS ((int));
477 static void pa_block
PARAMS ((int));
478 static void pa_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_pa11_opcode
PARAMS ((struct pa_it
*,
503 struct pa_11_fp_reg_struct
*));
504 static int pa_parse_number
PARAMS ((char **, struct pa_11_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));
543 static void hppa_elf_mark_end_of_function
PARAMS ((void));
545 /* File and gloally scoped variable declarations. */
547 /* Root and final entry in the space chain. */
548 static sd_chain_struct
*space_dict_root
;
549 static sd_chain_struct
*space_dict_last
;
551 /* The current space and subspace. */
552 static sd_chain_struct
*current_space
;
553 static ssd_chain_struct
*current_subspace
;
555 /* Root of the call_info chain. */
556 static struct call_info
*call_info_root
;
558 /* The last call_info (for functions) structure
559 seen so it can be associated with fixups and
561 static struct call_info
*last_call_info
;
563 /* The last call description (for actual calls). */
564 static struct call_desc last_call_desc
;
566 /* Jumps are always the same size -- one instruction. */
567 int md_short_jump_size
= 4;
568 int md_long_jump_size
= 4;
570 /* handle of the OPCODE hash table */
571 static struct hash_control
*op_hash
= NULL
;
573 /* This array holds the chars that always start a comment. If the
574 pre-processor is disabled, these aren't very useful. */
575 const char comment_chars
[] = ";";
577 /* Table of pseudo ops for the PA. FIXME -- how many of these
578 are now redundant with the overall GAS and the object file
580 const pseudo_typeS md_pseudo_table
[] =
582 /* align pseudo-ops on the PA specify the actual alignment requested,
583 not the log2 of the requested alignment. */
584 {"align", pa_align
, 8},
585 {"block", pa_block
, 1},
586 {"blockz", pa_block
, 0},
587 {"byte", pa_cons
, 1},
588 {"call", pa_call
, 0},
589 {"callinfo", pa_callinfo
, 0},
590 {"code", pa_code
, 0},
591 {"comm", pa_comm
, 0},
592 {"copyright", pa_copyright
, 0},
593 {"data", pa_data
, 0},
594 {"double", pa_float_cons
, 'd'},
596 {"enter", pa_enter
, 0},
597 {"entry", pa_entry
, 0},
599 {"exit", pa_exit
, 0},
600 {"export", pa_export
, 0},
601 {"fill", pa_fill
, 0},
602 {"float", pa_float_cons
, 'f'},
603 {"half", pa_cons
, 2},
604 {"import", pa_import
, 0},
606 {"label", pa_label
, 0},
607 {"lcomm", pa_lcomm
, 0},
608 {"leave", pa_leave
, 0},
609 {"long", pa_cons
, 4},
610 {"lsym", pa_lsym
, 0},
611 {"octa", pa_cons
, 16},
612 {"org", pa_origin
, 0},
613 {"origin", pa_origin
, 0},
614 {"param", pa_param
, 0},
615 {"proc", pa_proc
, 0},
616 {"procend", pa_procend
, 0},
617 {"quad", pa_cons
, 8},
619 {"short", pa_cons
, 2},
620 {"single", pa_float_cons
, 'f'},
621 {"space", pa_space
, 0},
622 {"spnum", pa_spnum
, 0},
623 {"string", pa_stringer
, 0},
624 {"stringz", pa_stringer
, 1},
625 {"subspa", pa_subspace
, 0},
626 {"text", pa_text
, 0},
627 {"version", pa_version
, 0},
628 {"word", pa_cons
, 4},
632 /* This array holds the chars that only start a comment at the beginning of
633 a line. If the line seems to have the form '# 123 filename'
634 .line and .file directives will appear in the pre-processed output.
636 Note that input_file.c hand checks for '#' at the beginning of the
637 first line of the input file. This is because the compiler outputs
638 #NO_APP at the beginning of its output.
640 Also note that '/*' will always start a comment. */
641 const char line_comment_chars
[] = "#";
643 /* This array holds the characters which act as line separators. */
644 const char line_separator_chars
[] = "!";
646 /* Chars that can be used to separate mant from exp in floating point nums. */
647 const char EXP_CHARS
[] = "eE";
649 /* Chars that mean this number is a floating point constant.
650 As in 0f12.456 or 0d1.2345e12.
652 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
653 changed in read.c. Ideally it shouldn't hae to know abou it at
654 all, but nothing is ideal around here. */
655 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
657 static struct pa_it the_insn
;
659 /* Points to the end of an expression just parsed by get_expressoin
660 and friends. FIXME. This shouldn't be handled with a file-global
662 static char *expr_end
;
664 /* Nonzero if a .callinfo appeared within the current procedure. */
665 static int callinfo_found
;
667 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
668 static int within_entry_exit
;
670 /* Nonzero if the assembler is currently within a procedure definition. */
671 static int within_procedure
;
673 /* Handle on strucutre which keep track of the last symbol
674 seen in each subspace. */
675 static label_symbol_struct
*label_symbols_rootp
= NULL
;
677 /* Holds the last field selector. */
678 static int hppa_field_selector
;
680 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
681 static symbolS
*dummy_symbol
;
683 /* Nonzero if errors are to be printed. */
684 static int print_errors
= 1;
686 /* List of registers that are pre-defined:
688 Each general register has one predefined name of the form
689 %r<REGNUM> which has the value <REGNUM>.
691 Space and control registers are handled in a similar manner,
692 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
694 Likewise for the floating point registers, but of the form
695 %fr<REGNUM>. Floating point registers have additional predefined
696 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
697 again have the value <REGNUM>.
699 Many registers also have synonyms:
701 %r26 - %r23 have %arg0 - %arg3 as synonyms
702 %r28 - %r29 have %ret0 - %ret1 as synonyms
703 %r30 has %sp as a synonym
704 %r27 has %dp as a synonym
705 %r2 has %rp as a synonym
707 Almost every control register has a synonym; they are not listed
710 The table is sorted. Suitable for searching by a binary search. */
712 static const struct pd_reg pre_defined_registers
[] =
912 /* This table is sorted by order of the length of the string. This is
913 so we check for <> before we check for <. If we had a <> and checked
914 for < first, we would get a false match. */
915 static const struct fp_cond_map fp_cond_map
[] =
951 static const struct selector_entry selector_table
[] =
970 /* default space and subspace dictionaries */
972 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
973 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
975 /* pre-defined subsegments (subspaces) for the HPPA. */
976 #define SUBSEG_CODE 0
977 #define SUBSEG_DATA 0
980 #define SUBSEG_UNWIND 3
981 #define SUBSEG_GDB_STRINGS 0
982 #define SUBSEG_GDB_SYMBOLS 1
984 static struct default_subspace_dict pa_def_subspaces
[] =
986 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE
},
987 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA
},
988 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT
},
989 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS
},
991 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND
},
993 {NULL
, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
996 static struct default_space_dict pa_def_spaces
[] =
998 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL
, ".text"},
999 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL
, ".data"},
1000 {NULL
, 0, 0, 0, 0, 0, ASEC_NULL
, NULL
}
1003 /* Misc local definitions used by the assembler. */
1005 /* Return nonzero if the string pointed to by S potentially represents
1006 a right or left half of a FP register */
1007 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1008 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1010 /* These macros are used to maintain spaces/subspaces. */
1011 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1012 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1013 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1014 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1016 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1017 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1019 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1020 main loop after insertion. */
1022 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1024 ((OPCODE) |= (FIELD) << (START)); \
1028 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1029 IGNORE is used to suppress the error message. */
1031 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1033 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1036 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1042 #define is_DP_relative(exp) \
1043 ((exp).X_op == O_subtract \
1044 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1046 #define is_PC_relative(exp) \
1047 ((exp).X_op == O_subtract \
1048 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1050 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1051 always be able to reduce the expression to a constant, so we don't
1052 need real complex handling yet. */
1053 #define is_complex(exp) \
1054 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1056 /* Actual functions to implement the PA specific code for the assembler. */
1058 /* Called before writing the object file. Make sure entry/exit and
1059 proc/procend pairs match. */
1064 if (within_entry_exit
)
1065 as_fatal ("Missing .exit\n");
1067 if (within_procedure
)
1068 as_fatal ("Missing .procend\n");
1071 /* Check to make sure we have a valid space and subspace. */
1074 pa_check_current_space_and_subspace ()
1076 if (current_space
== NULL
)
1077 as_fatal ("Not in a space.\n");
1079 if (current_subspace
== NULL
)
1080 as_fatal ("Not in a subspace.\n");
1083 /* Returns a pointer to the label_symbol_struct for the current space.
1084 or NULL if no label_symbol_struct exists for the current space. */
1086 static label_symbol_struct
*
1089 label_symbol_struct
*label_chain
;
1090 sd_chain_struct
*space_chain
= current_space
;
1092 for (label_chain
= label_symbols_rootp
;
1094 label_chain
= label_chain
->lss_next
)
1095 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1101 /* Defines a label for the current space. If one is already defined,
1102 this function will replace it with the new label. */
1105 pa_define_label (symbol
)
1108 label_symbol_struct
*label_chain
= pa_get_label ();
1109 sd_chain_struct
*space_chain
= current_space
;
1112 label_chain
->lss_label
= symbol
;
1115 /* Create a new label entry and add it to the head of the chain. */
1117 = (label_symbol_struct
*) xmalloc (sizeof (label_symbol_struct
));
1118 label_chain
->lss_label
= symbol
;
1119 label_chain
->lss_space
= space_chain
;
1120 label_chain
->lss_next
= NULL
;
1122 if (label_symbols_rootp
)
1123 label_chain
->lss_next
= label_symbols_rootp
;
1125 label_symbols_rootp
= label_chain
;
1129 /* Removes a label definition for the current space.
1130 If there is no label_symbol_struct entry, then no action is taken. */
1133 pa_undefine_label ()
1135 label_symbol_struct
*label_chain
;
1136 label_symbol_struct
*prev_label_chain
= NULL
;
1137 sd_chain_struct
*space_chain
= current_space
;
1139 for (label_chain
= label_symbols_rootp
;
1141 label_chain
= label_chain
->lss_next
)
1143 if (space_chain
== label_chain
->lss_space
&& label_chain
->lss_label
)
1145 /* Remove the label from the chain and free its memory. */
1146 if (prev_label_chain
)
1147 prev_label_chain
->lss_next
= label_chain
->lss_next
;
1149 label_symbols_rootp
= label_chain
->lss_next
;
1154 prev_label_chain
= label_chain
;
1159 /* An HPPA-specific version of fix_new. This is required because the HPPA
1160 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1161 results in the creation of an instance of an hppa_fix_struct. An
1162 hppa_fix_struct stores the extra information along with a pointer to the
1163 original fixS. This is attached to the original fixup via the
1164 tc_fix_data field. */
1167 fix_new_hppa (frag
, where
, size
, add_symbol
, offset
, exp
, pcrel
,
1168 r_type
, r_field
, r_format
, arg_reloc
, unwind_bits
)
1172 symbolS
*add_symbol
;
1176 bfd_reloc_code_real_type r_type
;
1177 enum hppa_reloc_field_selector_type r_field
;
1184 struct hppa_fix_struct
*hppa_fix
= (struct hppa_fix_struct
*)
1185 obstack_alloc (¬es
, sizeof (struct hppa_fix_struct
));
1188 new_fix
= fix_new_exp (frag
, where
, size
, exp
, pcrel
, r_type
);
1190 new_fix
= fix_new (frag
, where
, size
, add_symbol
, offset
, pcrel
, r_type
);
1191 new_fix
->tc_fix_data
= (void *) hppa_fix
;
1192 hppa_fix
->fx_r_type
= r_type
;
1193 hppa_fix
->fx_r_field
= r_field
;
1194 hppa_fix
->fx_r_format
= r_format
;
1195 hppa_fix
->fx_arg_reloc
= arg_reloc
;
1196 hppa_fix
->segment
= now_seg
;
1198 if (r_type
== R_ENTRY
|| r_type
== R_EXIT
)
1199 new_fix
->fx_offset
= *unwind_bits
;
1202 /* foo-$global$ is used to access non-automatic storage. $global$
1203 is really just a marker and has served its purpose, so eliminate
1204 it now so as not to confuse write.c. */
1205 if (new_fix
->fx_subsy
1206 && !strcmp (S_GET_NAME (new_fix
->fx_subsy
), "$global$"))
1207 new_fix
->fx_subsy
= NULL
;
1210 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1211 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1214 parse_cons_expression_hppa (exp
)
1217 hppa_field_selector
= pa_chk_field_selector (&input_line_pointer
);
1221 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1222 hppa_field_selector is set by the parse_cons_expression_hppa. */
1225 cons_fix_new_hppa (frag
, where
, size
, exp
)
1231 unsigned int rel_type
;
1233 /* Get a base relocation type. */
1234 if (is_DP_relative (*exp
))
1235 rel_type
= R_HPPA_GOTOFF
;
1236 else if (is_complex (*exp
))
1237 rel_type
= R_HPPA_COMPLEX
;
1241 if (hppa_field_selector
!= e_psel
&& hppa_field_selector
!= e_fsel
)
1242 as_warn ("Invalid field selector. Assuming F%%.");
1244 fix_new_hppa (frag
, where
, size
,
1245 (symbolS
*) NULL
, (offsetT
) 0, exp
, 0, rel_type
,
1246 hppa_field_selector
, 32, 0, NULL
);
1248 /* Reset field selector to its default state. */
1249 hppa_field_selector
= 0;
1252 /* This function is called once, at assembler startup time. It should
1253 set up all the tables, etc. that the MD part of the assembler will need. */
1258 const char *retval
= NULL
;
1262 last_call_info
= NULL
;
1263 call_info_root
= NULL
;
1265 /* Set the default machine type. */
1266 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, 10))
1267 as_warn ("could not set architecture and machine");
1269 /* Folding of text and data segments fails miserably on the PA.
1270 Warn user and disable "-R" option. */
1271 if (flag_readonly_data_in_text
)
1273 as_warn ("-R option not supported on this target.");
1274 flag_readonly_data_in_text
= 0;
1279 op_hash
= hash_new ();
1281 while (i
< NUMOPCODES
)
1283 const char *name
= pa_opcodes
[i
].name
;
1284 retval
= hash_insert (op_hash
, name
, (struct pa_opcode
*) &pa_opcodes
[i
]);
1285 if (retval
!= NULL
&& *retval
!= '\0')
1287 as_fatal ("Internal error: can't hash `%s': %s\n", name
, retval
);
1292 if ((pa_opcodes
[i
].match
& pa_opcodes
[i
].mask
)
1293 != pa_opcodes
[i
].match
)
1295 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
1296 pa_opcodes
[i
].name
, pa_opcodes
[i
].args
);
1301 while (i
< NUMOPCODES
&& !strcmp (pa_opcodes
[i
].name
, name
));
1305 as_fatal ("Broken assembler. No assembly attempted.");
1307 /* SOM will change text_section. To make sure we never put
1308 anything into the old one switch to the new one now. */
1309 subseg_set (text_section
, 0);
1311 dummy_symbol
= symbol_find_or_make ("L$dummy");
1312 S_SET_SEGMENT (dummy_symbol
, text_section
);
1315 /* Assemble a single instruction storing it into a frag. */
1322 /* The had better be something to assemble. */
1325 /* If we are within a procedure definition, make sure we've
1326 defined a label for the procedure; handle case where the
1327 label was defined after the .PROC directive.
1329 Note there's not need to diddle with the segment or fragment
1330 for the label symbol in this case. We have already switched
1331 into the new $CODE$ subspace at this point. */
1332 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
1334 label_symbol_struct
*label_symbol
= pa_get_label ();
1338 if (label_symbol
->lss_label
)
1340 last_call_info
->start_symbol
= label_symbol
->lss_label
;
1341 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
1343 /* Also handle allocation of a fixup to hold the unwind
1344 information when the label appears after the proc/procend. */
1345 if (within_entry_exit
)
1347 char *where
= frag_more (0);
1349 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
1350 NULL
, (offsetT
) 0, NULL
,
1351 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
1352 (int *)&last_call_info
->ci_unwind
.descriptor
);
1357 as_bad ("Missing function name for .PROC (corrupted label chain)");
1360 as_bad ("Missing function name for .PROC");
1363 /* Assemble the instruction. Results are saved into "the_insn". */
1366 /* Get somewhere to put the assembled instrution. */
1369 /* Output the opcode. */
1370 md_number_to_chars (to
, the_insn
.opcode
, 4);
1372 /* If necessary output more stuff. */
1373 if (the_insn
.reloc
!= R_HPPA_NONE
)
1374 fix_new_hppa (frag_now
, (to
- frag_now
->fr_literal
), 4, NULL
,
1375 (offsetT
) 0, &the_insn
.exp
, the_insn
.pcrel
,
1376 the_insn
.reloc
, the_insn
.field_selector
,
1377 the_insn
.format
, the_insn
.arg_reloc
, NULL
);
1380 /* Do the real work for assembling a single instruction. Store results
1381 into the global "the_insn" variable. */
1387 char *error_message
= "";
1388 char *s
, c
, *argstart
, *name
, *save_s
;
1392 int cmpltr
, nullif
, flag
, cond
, num
;
1393 unsigned long opcode
;
1394 struct pa_opcode
*insn
;
1396 /* We must have a valid space and subspace. */
1397 pa_check_current_space_and_subspace ();
1399 /* Skip to something interesting. */
1400 for (s
= str
; isupper (*s
) || islower (*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
1419 as_fatal ("Unknown opcode: `%s'", str
);
1424 /* Convert everything into lower case. */
1427 if (isupper (*save_s
))
1428 *save_s
= tolower (*save_s
);
1432 /* Look up the opcode in the has table. */
1433 if ((insn
= (struct pa_opcode
*) hash_find (op_hash
, str
)) == NULL
)
1435 as_bad ("Unknown opcode: `%s'", str
);
1444 /* Mark the location where arguments for the instruction start, then
1445 start processing them. */
1449 /* Do some initialization. */
1450 opcode
= insn
->match
;
1451 bzero (&the_insn
, sizeof (the_insn
));
1453 the_insn
.reloc
= R_HPPA_NONE
;
1455 /* If this instruction is specific to a particular architecture,
1456 then set a new architecture. */
1457 if (bfd_get_mach (stdoutput
) < insn
->arch
)
1459 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, insn
->arch
))
1460 as_warn ("could not update architecture and machine");
1463 /* Build the opcode, checking as we go to make
1464 sure that the operands match. */
1465 for (args
= insn
->args
;; ++args
)
1470 /* End of arguments. */
1486 /* These must match exactly. */
1495 /* Handle a 5 bit register or control register field at 10. */
1498 num
= pa_parse_number (&s
, 0);
1499 CHECK_FIELD (num
, 31, 0, 0);
1500 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
1502 /* Handle a 5 bit register field at 15. */
1504 num
= pa_parse_number (&s
, 0);
1505 CHECK_FIELD (num
, 31, 0, 0);
1506 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1508 /* Handle a 5 bit register field at 31. */
1511 num
= pa_parse_number (&s
, 0);
1512 CHECK_FIELD (num
, 31, 0, 0);
1513 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1515 /* Handle a 5 bit field length at 31. */
1517 num
= pa_get_absolute_expression (&the_insn
, &s
);
1519 CHECK_FIELD (num
, 32, 1, 0);
1520 INSERT_FIELD_AND_CONTINUE (opcode
, 32 - num
, 0);
1522 /* Handle a 5 bit immediate at 15. */
1524 num
= pa_get_absolute_expression (&the_insn
, &s
);
1526 CHECK_FIELD (num
, 15, -16, 0);
1527 low_sign_unext (num
, 5, &num
);
1528 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1530 /* Handle a 5 bit immediate at 31. */
1532 num
= pa_get_absolute_expression (&the_insn
, &s
);
1534 CHECK_FIELD (num
, 15, -16, 0)
1535 low_sign_unext (num
, 5, &num
);
1536 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1538 /* Handle an unsigned 5 bit immediate at 31. */
1540 num
= pa_get_absolute_expression (&the_insn
, &s
);
1542 CHECK_FIELD (num
, 31, 0, 0);
1543 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
1545 /* Handle an unsigned 5 bit immediate at 15. */
1547 num
= pa_get_absolute_expression (&the_insn
, &s
);
1549 CHECK_FIELD (num
, 31, 0, 0);
1550 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 16);
1552 /* Handle a 2 bit space identifier at 17. */
1554 num
= pa_parse_number (&s
, 0);
1555 CHECK_FIELD (num
, 3, 0, 1);
1556 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 14);
1558 /* Handle a 3 bit space identifier at 18. */
1560 num
= pa_parse_number (&s
, 0);
1561 CHECK_FIELD (num
, 7, 0, 1);
1562 dis_assemble_3 (num
, &num
);
1563 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
1565 /* Handle a completer for an indexing load or store. */
1571 while (*s
== ',' && i
< 2)
1574 if (strncasecmp (s
, "sm", 2) == 0)
1581 else if (strncasecmp (s
, "m", 1) == 0)
1583 else if (strncasecmp (s
, "s", 1) == 0)
1586 as_bad ("Invalid Indexed Load Completer.");
1591 as_bad ("Invalid Indexed Load Completer Syntax.");
1593 INSERT_FIELD_AND_CONTINUE (opcode
, uu
, 13);
1596 /* Handle a short load/store completer. */
1604 if (strncasecmp (s
, "ma", 2) == 0)
1609 else if (strncasecmp (s
, "mb", 2) == 0)
1615 as_bad ("Invalid Short Load/Store Completer.");
1619 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1622 /* Handle a stbys completer. */
1628 while (*s
== ',' && i
< 2)
1631 if (strncasecmp (s
, "m", 1) == 0)
1633 else if (strncasecmp (s
, "b", 1) == 0)
1635 else if (strncasecmp (s
, "e", 1) == 0)
1638 as_bad ("Invalid Store Bytes Short Completer");
1643 as_bad ("Invalid Store Bytes Short Completer");
1645 INSERT_FIELD_AND_CONTINUE (opcode
, a
, 13);
1648 /* Handle a non-negated compare/stubtract condition. */
1650 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1653 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1656 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1658 /* Handle a negated or non-negated compare/subtract condition. */
1661 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 1);
1665 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 1);
1668 as_bad ("Invalid Compare/Subtract Condition.");
1673 /* Negated condition requires an opcode change. */
1677 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1679 /* Handle non-negated add condition. */
1681 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1684 as_bad ("Invalid Compare/Subtract Condition: %c", *s
);
1687 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1689 /* Handle a negated or non-negated add condition. */
1692 cmpltr
= pa_parse_nonneg_add_cmpltr (&s
, 1);
1696 cmpltr
= pa_parse_neg_add_cmpltr (&s
, 1);
1699 as_bad ("Invalid Compare/Subtract Condition");
1704 /* Negated condition requires an opcode change. */
1708 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1710 /* Handle a compare/subtract condition. */
1717 cmpltr
= pa_parse_nonneg_cmpsub_cmpltr (&s
, 0);
1722 cmpltr
= pa_parse_neg_cmpsub_cmpltr (&s
, 0);
1725 as_bad ("Invalid Compare/Subtract Condition");
1729 opcode
|= cmpltr
<< 13;
1730 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1732 /* Handle a non-negated add condition. */
1741 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1745 if (strcmp (name
, "=") == 0)
1747 else if (strcmp (name
, "<") == 0)
1749 else if (strcmp (name
, "<=") == 0)
1751 else if (strcasecmp (name
, "nuv") == 0)
1753 else if (strcasecmp (name
, "znv") == 0)
1755 else if (strcasecmp (name
, "sv") == 0)
1757 else if (strcasecmp (name
, "od") == 0)
1759 else if (strcasecmp (name
, "n") == 0)
1761 else if (strcasecmp (name
, "tr") == 0)
1766 else if (strcmp (name
, "<>") == 0)
1771 else if (strcmp (name
, ">=") == 0)
1776 else if (strcmp (name
, ">") == 0)
1781 else if (strcasecmp (name
, "uv") == 0)
1786 else if (strcasecmp (name
, "vnz") == 0)
1791 else if (strcasecmp (name
, "nsv") == 0)
1796 else if (strcasecmp (name
, "ev") == 0)
1802 as_bad ("Invalid Add Condition: %s", name
);
1805 nullif
= pa_parse_nullif (&s
);
1806 opcode
|= nullif
<< 1;
1807 opcode
|= cmpltr
<< 13;
1808 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1810 /* HANDLE a logical instruction condition. */
1818 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1822 if (strcmp (name
, "=") == 0)
1824 else if (strcmp (name
, "<") == 0)
1826 else if (strcmp (name
, "<=") == 0)
1828 else if (strcasecmp (name
, "od") == 0)
1830 else if (strcasecmp (name
, "tr") == 0)
1835 else if (strcmp (name
, "<>") == 0)
1840 else if (strcmp (name
, ">=") == 0)
1845 else if (strcmp (name
, ">") == 0)
1850 else if (strcasecmp (name
, "ev") == 0)
1856 as_bad ("Invalid Logical Instruction Condition.");
1859 opcode
|= cmpltr
<< 13;
1860 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1862 /* Handle a unit instruction condition. */
1869 if (strncasecmp (s
, "sbz", 3) == 0)
1874 else if (strncasecmp (s
, "shz", 3) == 0)
1879 else if (strncasecmp (s
, "sdc", 3) == 0)
1884 else if (strncasecmp (s
, "sbc", 3) == 0)
1889 else if (strncasecmp (s
, "shc", 3) == 0)
1894 else if (strncasecmp (s
, "tr", 2) == 0)
1900 else if (strncasecmp (s
, "nbz", 3) == 0)
1906 else if (strncasecmp (s
, "nhz", 3) == 0)
1912 else if (strncasecmp (s
, "ndc", 3) == 0)
1918 else if (strncasecmp (s
, "nbc", 3) == 0)
1924 else if (strncasecmp (s
, "nhc", 3) == 0)
1931 as_bad ("Invalid Logical Instruction Condition.");
1933 opcode
|= cmpltr
<< 13;
1934 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 12);
1936 /* Handle a shift/extract/deposit condition. */
1944 while (*s
!= ',' && *s
!= ' ' && *s
!= '\t')
1948 if (strcmp (name
, "=") == 0)
1950 else if (strcmp (name
, "<") == 0)
1952 else if (strcasecmp (name
, "od") == 0)
1954 else if (strcasecmp (name
, "tr") == 0)
1956 else if (strcmp (name
, "<>") == 0)
1958 else if (strcmp (name
, ">=") == 0)
1960 else if (strcasecmp (name
, "ev") == 0)
1962 /* Handle movb,n. Put things back the way they were.
1963 This includes moving s back to where it started. */
1964 else if (strcasecmp (name
, "n") == 0 && *args
== '|')
1971 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1974 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1976 /* Handle bvb and bb conditions. */
1982 if (strncmp (s
, "<", 1) == 0)
1987 else if (strncmp (s
, ">=", 2) == 0)
1993 as_bad ("Invalid Bit Branch Condition: %c", *s
);
1995 INSERT_FIELD_AND_CONTINUE (opcode
, cmpltr
, 13);
1997 /* Handle a system control completer. */
1999 if (*s
== ',' && (*(s
+ 1) == 'm' || *(s
+ 1) == 'M'))
2007 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 5);
2009 /* Handle a nullification completer for branch instructions. */
2011 nullif
= pa_parse_nullif (&s
);
2012 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 1);
2014 /* Handle a nullification completer for copr and spop insns. */
2016 nullif
= pa_parse_nullif (&s
);
2017 INSERT_FIELD_AND_CONTINUE (opcode
, nullif
, 5);
2019 /* Handle a 11 bit immediate at 31. */
2021 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2024 if (the_insn
.exp
.X_op
== O_constant
)
2026 num
= evaluate_absolute (&the_insn
);
2027 CHECK_FIELD (num
, 1023, -1024, 0);
2028 low_sign_unext (num
, 11, &num
);
2029 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2033 if (is_DP_relative (the_insn
.exp
))
2034 the_insn
.reloc
= R_HPPA_GOTOFF
;
2035 else if (is_PC_relative (the_insn
.exp
))
2036 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2038 the_insn
.reloc
= R_HPPA
;
2039 the_insn
.format
= 11;
2043 /* Handle a 14 bit immediate at 31. */
2045 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2048 if (the_insn
.exp
.X_op
== O_constant
)
2050 num
= evaluate_absolute (&the_insn
);
2051 CHECK_FIELD (num
, 8191, -8192, 0);
2052 low_sign_unext (num
, 14, &num
);
2053 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2057 if (is_DP_relative (the_insn
.exp
))
2058 the_insn
.reloc
= R_HPPA_GOTOFF
;
2059 else if (is_PC_relative (the_insn
.exp
))
2060 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2062 the_insn
.reloc
= R_HPPA
;
2063 the_insn
.format
= 14;
2067 /* Handle a 21 bit immediate at 31. */
2069 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2072 if (the_insn
.exp
.X_op
== O_constant
)
2074 num
= evaluate_absolute (&the_insn
);
2075 CHECK_FIELD (num
>> 11, 1048575, -1048576, 0);
2076 dis_assemble_21 (num
, &num
);
2077 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2081 if (is_DP_relative (the_insn
.exp
))
2082 the_insn
.reloc
= R_HPPA_GOTOFF
;
2083 else if (is_PC_relative (the_insn
.exp
))
2084 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2086 the_insn
.reloc
= R_HPPA
;
2087 the_insn
.format
= 21;
2091 /* Handle a 12 bit branch displacement. */
2093 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2097 if (!strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
), "L$0\001"))
2099 unsigned int w1
, w
, result
;
2101 num
= evaluate_absolute (&the_insn
);
2104 as_bad ("Branch to unaligned address");
2107 CHECK_FIELD (num
, 8191, -8192, 0);
2108 sign_unext ((num
- 8) >> 2, 12, &result
);
2109 dis_assemble_12 (result
, &w1
, &w
);
2110 INSERT_FIELD_AND_CONTINUE (opcode
, ((w1
<< 2) | w
), 0);
2114 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2115 the_insn
.format
= 12;
2116 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2117 bzero (&last_call_desc
, sizeof (struct call_desc
));
2122 /* Handle a 17 bit branch displacement. */
2124 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2128 if (!the_insn
.exp
.X_add_symbol
2129 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2132 unsigned int w2
, w1
, w
, result
;
2134 num
= evaluate_absolute (&the_insn
);
2137 as_bad ("Branch to unaligned address");
2140 CHECK_FIELD (num
, 262143, -262144, 0);
2142 if (the_insn
.exp
.X_add_symbol
)
2145 sign_unext (num
>> 2, 17, &result
);
2146 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2147 INSERT_FIELD_AND_CONTINUE (opcode
,
2148 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2152 the_insn
.reloc
= R_HPPA_PCREL_CALL
;
2153 the_insn
.format
= 17;
2154 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2155 bzero (&last_call_desc
, sizeof (struct call_desc
));
2159 /* Handle an absolute 17 bit branch target. */
2161 the_insn
.field_selector
= pa_chk_field_selector (&s
);
2165 if (!the_insn
.exp
.X_add_symbol
2166 || !strcmp (S_GET_NAME (the_insn
.exp
.X_add_symbol
),
2169 unsigned int w2
, w1
, w
, result
;
2171 num
= evaluate_absolute (&the_insn
);
2174 as_bad ("Branch to unaligned address");
2177 CHECK_FIELD (num
, 262143, -262144, 0);
2179 if (the_insn
.exp
.X_add_symbol
)
2182 sign_unext (num
>> 2, 17, &result
);
2183 dis_assemble_17 (result
, &w1
, &w2
, &w
);
2184 INSERT_FIELD_AND_CONTINUE (opcode
,
2185 ((w2
<< 2) | (w1
<< 16) | w
), 0);
2189 the_insn
.reloc
= R_HPPA_ABS_CALL
;
2190 the_insn
.format
= 17;
2191 the_insn
.arg_reloc
= last_call_desc
.arg_reloc
;
2192 bzero (&last_call_desc
, sizeof (struct call_desc
));
2196 /* Handle a 5 bit shift count at 26. */
2198 num
= pa_get_absolute_expression (&the_insn
, &s
);
2200 CHECK_FIELD (num
, 31, 0, 0);
2201 INSERT_FIELD_AND_CONTINUE (opcode
, 31 - num
, 5);
2203 /* Handle a 5 bit bit position at 26. */
2205 num
= pa_get_absolute_expression (&the_insn
, &s
);
2207 CHECK_FIELD (num
, 31, 0, 0);
2208 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 5);
2210 /* Handle a 5 bit immediate at 10. */
2212 num
= pa_get_absolute_expression (&the_insn
, &s
);
2214 CHECK_FIELD (num
, 31, 0, 0);
2215 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 21);
2217 /* Handle a 13 bit immediate at 18. */
2219 num
= pa_get_absolute_expression (&the_insn
, &s
);
2221 CHECK_FIELD (num
, 8191, 0, 0);
2222 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 13);
2224 /* Handle a 26 bit immediate at 31. */
2226 num
= pa_get_absolute_expression (&the_insn
, &s
);
2228 CHECK_FIELD (num
, 671108864, 0, 0);
2229 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2231 /* Handle a 3 bit SFU identifier at 25. */
2234 as_bad ("Invalid SFU identifier");
2235 num
= pa_get_absolute_expression (&the_insn
, &s
);
2237 CHECK_FIELD (num
, 7, 0, 0);
2238 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2240 /* Handle a 20 bit SOP field for spop0. */
2242 num
= pa_get_absolute_expression (&the_insn
, &s
);
2244 CHECK_FIELD (num
, 1048575, 0, 0);
2245 num
= (num
& 0x1f) | ((num
& 0x000fffe0) << 6);
2246 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2248 /* Handle a 15bit SOP field for spop1. */
2250 num
= pa_get_absolute_expression (&the_insn
, &s
);
2252 CHECK_FIELD (num
, 32767, 0, 0);
2253 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 11);
2255 /* Handle a 10bit SOP field for spop3. */
2257 num
= pa_get_absolute_expression (&the_insn
, &s
);
2259 CHECK_FIELD (num
, 1023, 0, 0);
2260 num
= (num
& 0x1f) | ((num
& 0x000003e0) << 6);
2261 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2263 /* Handle a 15 bit SOP field for spop2. */
2265 num
= pa_get_absolute_expression (&the_insn
, &s
);
2267 CHECK_FIELD (num
, 32767, 0, 0);
2268 num
= (num
& 0x1f) | ((num
& 0x00007fe0) << 6);
2269 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2271 /* Handle a 3-bit co-processor ID field. */
2274 as_bad ("Invalid COPR identifier");
2275 num
= pa_get_absolute_expression (&the_insn
, &s
);
2277 CHECK_FIELD (num
, 7, 0, 0);
2278 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 6);
2280 /* Handle a 22bit SOP field for copr. */
2282 num
= pa_get_absolute_expression (&the_insn
, &s
);
2284 CHECK_FIELD (num
, 4194303, 0, 0);
2285 num
= (num
& 0x1f) | ((num
& 0x003fffe0) << 4);
2286 INSERT_FIELD_AND_CONTINUE (opcode
, num
, 0);
2288 /* Handle a source FP operand format completer. */
2290 flag
= pa_parse_fp_format (&s
);
2291 the_insn
.fpof1
= flag
;
2292 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 11);
2294 /* Handle a destination FP operand format completer. */
2296 /* pa_parse_format needs the ',' prefix. */
2298 flag
= pa_parse_fp_format (&s
);
2299 the_insn
.fpof2
= flag
;
2300 INSERT_FIELD_AND_CONTINUE (opcode
, flag
, 13);
2302 /* Handle FP compare conditions. */
2304 cond
= pa_parse_fp_cmp_cond (&s
);
2305 INSERT_FIELD_AND_CONTINUE (opcode
, cond
, 0);
2307 /* Handle L/R register halves like 't'. */
2310 struct pa_11_fp_reg_struct result
;
2312 pa_parse_number (&s
, &result
);
2313 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2314 opcode
|= result
.number_part
;
2316 /* 0x30 opcodes are FP arithmetic operation opcodes
2317 and need to be turned into 0x38 opcodes. This
2318 is not necessary for loads/stores. */
2319 if (need_pa11_opcode (&the_insn
, &result
)
2320 && ((opcode
& 0xfc000000) == 0x30000000))
2323 INSERT_FIELD_AND_CONTINUE (opcode
, result
.l_r_select
& 1, 6);
2326 /* Handle L/R register halves like 'b'. */
2329 struct pa_11_fp_reg_struct result
;
2331 pa_parse_number (&s
, &result
);
2332 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2333 opcode
|= result
.number_part
<< 21;
2334 if (need_pa11_opcode (&the_insn
, &result
))
2336 opcode
|= (result
.l_r_select
& 1) << 7;
2342 /* Handle L/R register halves like 'x'. */
2345 struct pa_11_fp_reg_struct result
;
2347 pa_parse_number (&s
, &result
);
2348 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2349 opcode
|= (result
.number_part
& 0x1f) << 16;
2350 if (need_pa11_opcode (&the_insn
, &result
))
2352 opcode
|= (result
.l_r_select
& 1) << 12;
2358 /* Handle a 5 bit register field at 10. */
2361 struct pa_11_fp_reg_struct result
;
2363 pa_parse_number (&s
, &result
);
2364 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2365 if (the_insn
.fpof1
== SGL
)
2367 if (result
.number_part
< 16)
2369 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2373 result
.number_part
&= 0xF;
2374 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2376 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 21);
2379 /* Handle a 5 bit register field at 15. */
2382 struct pa_11_fp_reg_struct result
;
2384 pa_parse_number (&s
, &result
);
2385 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2386 if (the_insn
.fpof1
== SGL
)
2388 if (result
.number_part
< 16)
2390 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2393 result
.number_part
&= 0xF;
2394 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2396 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 16);
2399 /* Handle a 5 bit register field at 31. */
2402 struct pa_11_fp_reg_struct result
;
2404 pa_parse_number (&s
, &result
);
2405 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2406 if (the_insn
.fpof1
== SGL
)
2408 if (result
.number_part
< 16)
2410 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2413 result
.number_part
&= 0xF;
2414 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2416 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 0);
2419 /* Handle a 5 bit register field at 20. */
2422 struct pa_11_fp_reg_struct result
;
2424 pa_parse_number (&s
, &result
);
2425 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2426 if (the_insn
.fpof1
== SGL
)
2428 if (result
.number_part
< 16)
2430 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2433 result
.number_part
&= 0xF;
2434 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2436 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 11);
2439 /* Handle a 5 bit register field at 25. */
2442 struct pa_11_fp_reg_struct result
;
2444 pa_parse_number (&s
, &result
);
2445 CHECK_FIELD (result
.number_part
, 31, 0, 0);
2446 if (the_insn
.fpof1
== SGL
)
2448 if (result
.number_part
< 16)
2450 as_bad ("Invalid register for single precision fmpyadd or fmpysub");
2453 result
.number_part
&= 0xF;
2454 result
.number_part
|= (result
.l_r_select
& 1) << 4;
2456 INSERT_FIELD_AND_CONTINUE (opcode
, result
.number_part
, 6);
2459 /* Handle a floating point operand format at 26.
2460 Only allows single and double precision. */
2462 flag
= pa_parse_fp_format (&s
);
2468 the_insn
.fpof1
= flag
;
2474 as_bad ("Invalid Floating Point Operand Format.");
2484 /* Check if the args matched. */
2487 if (&insn
[1] - pa_opcodes
< NUMOPCODES
2488 && !strcmp (insn
->name
, insn
[1].name
))
2496 as_bad ("Invalid operands %s", error_message
);
2503 the_insn
.opcode
= opcode
;
2506 /* Turn a string in input_line_pointer into a floating point constant of type
2507 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2508 emitted is stored in *sizeP . An error message or NULL is returned. */
2510 #define MAX_LITTLENUMS 6
2513 md_atof (type
, litP
, sizeP
)
2519 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
2520 LITTLENUM_TYPE
*wordP
;
2552 return "Bad call to MD_ATOF()";
2554 t
= atof_ieee (input_line_pointer
, type
, words
);
2556 input_line_pointer
= t
;
2557 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
2558 for (wordP
= words
; prec
--;)
2560 md_number_to_chars (litP
, (valueT
) (*wordP
++), sizeof (LITTLENUM_TYPE
));
2561 litP
+= sizeof (LITTLENUM_TYPE
);
2566 /* Write out big-endian. */
2569 md_number_to_chars (buf
, val
, n
)
2574 number_to_chars_bigendian (buf
, val
, n
);
2577 /* Translate internal representation of relocation info to BFD target
2581 tc_gen_reloc (section
, fixp
)
2586 struct hppa_fix_struct
*hppa_fixp
;
2587 bfd_reloc_code_real_type code
;
2588 static arelent
*no_relocs
= NULL
;
2590 bfd_reloc_code_real_type
**codes
;
2594 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
2595 if (fixp
->fx_addsy
== 0)
2597 assert (hppa_fixp
!= 0);
2598 assert (section
!= 0);
2600 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
));
2601 assert (reloc
!= 0);
2603 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2604 codes
= (bfd_reloc_code_real_type
**) hppa_gen_reloc_type (stdoutput
,
2606 hppa_fixp
->fx_r_format
,
2607 hppa_fixp
->fx_r_field
,
2608 fixp
->fx_subsy
!= NULL
);
2610 for (n_relocs
= 0; codes
[n_relocs
]; n_relocs
++)
2613 relocs
= (arelent
**)
2614 bfd_alloc_by_size_t (stdoutput
, sizeof (arelent
*) * n_relocs
+ 1);
2615 assert (relocs
!= 0);
2617 reloc
= (arelent
*) bfd_alloc_by_size_t (stdoutput
,
2618 sizeof (arelent
) * n_relocs
);
2620 assert (reloc
!= 0);
2622 for (i
= 0; i
< n_relocs
; i
++)
2623 relocs
[i
] = &reloc
[i
];
2625 relocs
[n_relocs
] = NULL
;
2628 switch (fixp
->fx_r_type
)
2631 assert (n_relocs
== 1);
2635 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2636 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2637 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2638 reloc
->addend
= 0; /* default */
2640 assert (reloc
->howto
&& code
== reloc
->howto
->type
);
2642 /* Now, do any processing that is dependent on the relocation type. */
2645 case R_PARISC_DLTREL21L
:
2646 case R_PARISC_DLTREL14R
:
2647 case R_PARISC_DLTREL14F
:
2648 case R_PARISC_PLABEL32
:
2649 case R_PARISC_PLABEL21L
:
2650 case R_PARISC_PLABEL14R
:
2651 /* For plabel relocations, the addend of the
2652 relocation should be either 0 (no static link) or 2
2653 (static link required).
2655 FIXME: We always assume no static link!
2657 We also slam a zero addend into the DLT relative relocs;
2658 it doesn't make a lot of sense to use any addend since
2659 it gets you a different (eg unknown) DLT entry. */
2663 case R_PARISC_PCREL21L
:
2664 case R_PARISC_PCREL17R
:
2665 case R_PARISC_PCREL17F
:
2666 case R_PARISC_PCREL17C
:
2667 case R_PARISC_PCREL14R
:
2668 case R_PARISC_PCREL14F
:
2669 /* The constant is stored in the instruction. */
2670 reloc
->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2673 reloc
->addend
= fixp
->fx_offset
;
2680 /* Walk over reach relocation returned by the BFD backend. */
2681 for (i
= 0; i
< n_relocs
; i
++)
2685 relocs
[i
]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2686 relocs
[i
]->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2687 relocs
[i
]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2692 /* The only time we ever use a R_COMP2 fixup is for the difference
2693 of two symbols. With that in mind we fill in all four
2694 relocs now and break out of the loop. */
2696 relocs
[0]->sym_ptr_ptr
= &bfd_abs_symbol
;
2697 relocs
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[0]);
2698 relocs
[0]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2699 relocs
[0]->addend
= 0;
2700 relocs
[0]->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
2701 relocs
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[1]);
2702 relocs
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2703 relocs
[1]->addend
= 0;
2704 relocs
[2]->sym_ptr_ptr
= &fixp
->fx_subsy
->bsym
;
2705 relocs
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[2]);
2706 relocs
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2707 relocs
[2]->addend
= 0;
2708 relocs
[3]->sym_ptr_ptr
= &bfd_abs_symbol
;
2709 relocs
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[3]);
2710 relocs
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2711 relocs
[3]->addend
= 0;
2712 relocs
[4]->sym_ptr_ptr
= &bfd_abs_symbol
;
2713 relocs
[4]->howto
= bfd_reloc_type_lookup (stdoutput
, *codes
[4]);
2714 relocs
[4]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2715 relocs
[4]->addend
= 0;
2719 relocs
[i
]->addend
= HPPA_R_ADDEND (hppa_fixp
->fx_arg_reloc
, 0);
2725 /* For plabel relocations, the addend of the
2726 relocation should be either 0 (no static link) or 2
2727 (static link required).
2729 FIXME: We always assume no static link!
2731 We also slam a zero addend into the DLT relative relocs;
2732 it doesn't make a lot of sense to use any addend since
2733 it gets you a different (eg unknown) DLT entry. */
2734 relocs
[i
]->addend
= 0;
2744 /* There is no symbol or addend associated with these fixups. */
2745 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2746 relocs
[i
]->addend
= 0;
2751 /* There is no symbol associated with these fixups. */
2752 relocs
[i
]->sym_ptr_ptr
= &dummy_symbol
->bsym
;
2753 relocs
[i
]->addend
= fixp
->fx_offset
;
2757 relocs
[i
]->addend
= fixp
->fx_offset
;
2766 /* Process any machine dependent frag types. */
2769 md_convert_frag (abfd
, sec
, fragP
)
2771 register asection
*sec
;
2772 register fragS
*fragP
;
2774 unsigned int address
;
2776 if (fragP
->fr_type
== rs_machine_dependent
)
2778 switch ((int) fragP
->fr_subtype
)
2781 fragP
->fr_type
= rs_fill
;
2782 know (fragP
->fr_var
== 1);
2783 know (fragP
->fr_next
);
2784 address
= fragP
->fr_address
+ fragP
->fr_fix
;
2785 if (address
% fragP
->fr_offset
)
2788 fragP
->fr_next
->fr_address
2793 fragP
->fr_offset
= 0;
2799 /* Round up a section size to the appropriate boundary. */
2802 md_section_align (segment
, size
)
2806 int align
= bfd_get_section_alignment (stdoutput
, segment
);
2807 int align2
= (1 << align
) - 1;
2809 return (size
+ align2
) & ~align2
;
2812 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2814 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2816 addressT from_addr
, to_addr
;
2820 fprintf (stderr
, "pa_create_short_jmp\n");
2824 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2826 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
2828 addressT from_addr
, to_addr
;
2832 fprintf (stderr
, "pa_create_long_jump\n");
2836 /* Return the approximate size of a frag before relaxation has occurred. */
2838 md_estimate_size_before_relax (fragP
, segment
)
2839 register fragS
*fragP
;
2846 while ((fragP
->fr_fix
+ size
) % fragP
->fr_offset
)
2852 CONST
char *md_shortopts
= "";
2853 struct option md_longopts
[] = {
2854 {NULL
, no_argument
, NULL
, 0}
2856 size_t md_longopts_size
= sizeof(md_longopts
);
2859 md_parse_option (c
, arg
)
2867 md_show_usage (stream
)
2872 /* We have no need to default values of symbols. */
2875 md_undefined_symbol (name
)
2881 /* Apply a fixup to an instruction. */
2884 md_apply_fix (fixP
, valp
)
2888 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
2889 struct hppa_fix_struct
*hppa_fixP
;
2890 long new_val
, result
;
2891 unsigned int w1
, w2
, w
;
2893 hppa_fixP
= (struct hppa_fix_struct
*) fixP
->tc_fix_data
;
2894 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2895 never be "applied" (they are just markers). */
2897 if (fixP
->fx_r_type
== R_HPPA_ENTRY
2898 || fixP
->fx_r_type
== R_HPPA_EXIT
)
2902 /* There should have been an HPPA specific fixup associated
2903 with the GAS fixup. */
2906 unsigned long buf_wd
= bfd_get_32 (stdoutput
, buf
);
2907 unsigned char fmt
= bfd_hppa_insn2fmt (buf_wd
);
2909 /* If there is a symbol associated with this fixup, then it's something
2910 which will need a SOM relocation (except for some PC-relative relocs).
2911 In such cases we should treat the "val" or "addend" as zero since it
2912 will be added in as needed from fx_offset in tc_gen_reloc. */
2913 if ((fixP
->fx_addsy
!= NULL
2914 || fixP
->fx_r_type
== R_HPPA_NONE
)
2917 || hppa_fixP
->fx_r_field
== e_psel
2918 || hppa_fixP
->fx_r_field
== e_rpsel
2919 || hppa_fixP
->fx_r_field
== e_lpsel
2920 || hppa_fixP
->fx_r_field
== e_tsel
2921 || hppa_fixP
->fx_r_field
== e_rtsel
2922 || hppa_fixP
->fx_r_field
== e_ltsel
2925 new_val
= ((fmt
== 12 || fmt
== 17) ? 8 : 0);
2927 /* This is truely disgusting. The machine independent code blindly
2928 adds in the value of the symbol being relocated against. Damn! */
2930 && fixP
->fx_addsy
!= NULL
2931 && S_GET_SEGMENT (fixP
->fx_addsy
) != bfd_com_section_ptr
)
2932 new_val
= hppa_field_adjust (*valp
- S_GET_VALUE (fixP
->fx_addsy
),
2933 0, hppa_fixP
->fx_r_field
);
2936 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2938 /* Handle pc-relative exceptions from above. */
2939 #define arg_reloc_stub_needed(CALLER, CALLEE) \
2940 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2941 if ((fmt
== 12 || fmt
== 17)
2944 && !arg_reloc_stub_needed (((obj_symbol_type
*)
2945 fixP
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
2946 hppa_fixP
->fx_arg_reloc
)
2947 && ((int)(*valp
) > -262144 && (int)(*valp
) < 262143)
2948 && S_GET_SEGMENT (fixP
->fx_addsy
) == hppa_fixP
->segment
2950 && S_GET_SEGMENT (fixP
->fx_subsy
) != hppa_fixP
->segment
))
2952 new_val
= hppa_field_adjust (*valp
, 0, hppa_fixP
->fx_r_field
);
2953 #undef arg_reloc_stub_needed
2957 /* Handle all opcodes with the 'j' operand type. */
2959 CHECK_FIELD (new_val
, 8191, -8192, 0);
2961 /* Mask off 14 bits to be changed. */
2962 bfd_put_32 (stdoutput
,
2963 bfd_get_32 (stdoutput
, buf
) & 0xffffc000,
2965 low_sign_unext (new_val
, 14, &result
);
2968 /* Handle all opcodes with the 'k' operand type. */
2970 CHECK_FIELD (new_val
, 2097152, 0, 0);
2972 /* Mask off 21 bits to be changed. */
2973 bfd_put_32 (stdoutput
,
2974 bfd_get_32 (stdoutput
, buf
) & 0xffe00000,
2976 dis_assemble_21 (new_val
, &result
);
2979 /* Handle all the opcodes with the 'i' operand type. */
2981 CHECK_FIELD (new_val
, 1023, -1023, 0);
2983 /* Mask off 11 bits to be changed. */
2984 bfd_put_32 (stdoutput
,
2985 bfd_get_32 (stdoutput
, buf
) & 0xffff800,
2987 low_sign_unext (new_val
, 11, &result
);
2990 /* Handle all the opcodes with the 'w' operand type. */
2992 CHECK_FIELD (new_val
, 8191, -8192, 0)
2994 /* Mask off 11 bits to be changed. */
2995 sign_unext ((new_val
- 8) >> 2, 12, &result
);
2996 bfd_put_32 (stdoutput
,
2997 bfd_get_32 (stdoutput
, buf
) & 0xffffe002,
3000 dis_assemble_12 (result
, &w1
, &w
);
3001 result
= ((w1
<< 2) | w
);
3004 /* Handle some of the opcodes with the 'W' operand type. */
3006 CHECK_FIELD (new_val
, 262143, -262144, 0);
3008 /* Mask off 17 bits to be changed. */
3009 bfd_put_32 (stdoutput
,
3010 bfd_get_32 (stdoutput
, buf
) & 0xffe0e002,
3012 sign_unext ((new_val
- 8) >> 2, 17, &result
);
3013 dis_assemble_17 (result
, &w1
, &w2
, &w
);
3014 result
= ((w2
<< 2) | (w1
<< 16) | w
);
3019 bfd_put_32 (stdoutput
, new_val
, buf
);
3023 as_bad ("Unknown relocation encountered in md_apply_fix.");
3027 /* Insert the relocation. */
3028 bfd_put_32 (stdoutput
, bfd_get_32 (stdoutput
, buf
) | result
, buf
);
3033 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
3034 (unsigned int) fixP
, fixP
->fx_r_type
);
3039 /* Exactly what point is a PC-relative offset relative TO?
3040 On the PA, they're relative to the address of the offset. */
3043 md_pcrel_from (fixP
)
3046 return fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
3049 /* Return nonzero if the input line pointer is at the end of
3053 is_end_of_statement ()
3055 return ((*input_line_pointer
== '\n')
3056 || (*input_line_pointer
== ';')
3057 || (*input_line_pointer
== '!'));
3060 /* Read a number from S. The number might come in one of many forms,
3061 the most common will be a hex or decimal constant, but it could be
3062 a pre-defined register (Yuk!), or an absolute symbol.
3064 Return a number or -1 for failure.
3066 When parsing PA-89 FP register numbers RESULT will be
3067 the address of a structure to return information about
3068 L/R half of FP registers, store results there as appropriate.
3070 pa_parse_number can not handle negative constants and will fail
3071 horribly if it is passed such a constant. */
3074 pa_parse_number (s
, result
)
3076 struct pa_11_fp_reg_struct
*result
;
3085 /* Skip whitespace before the number. */
3086 while (*p
== ' ' || *p
== '\t')
3089 /* Store info in RESULT if requested by caller. */
3092 result
->number_part
= -1;
3093 result
->l_r_select
= -1;
3099 /* Looks like a number. */
3102 if (*p
== '0' && (*(p
+ 1) == 'x' || *(p
+ 1) == 'X'))
3104 /* The number is specified in hex. */
3106 while (isdigit (*p
) || ((*p
>= 'a') && (*p
<= 'f'))
3107 || ((*p
>= 'A') && (*p
<= 'F')))
3110 num
= num
* 16 + *p
- '0';
3111 else if (*p
>= 'a' && *p
<= 'f')
3112 num
= num
* 16 + *p
- 'a' + 10;
3114 num
= num
* 16 + *p
- 'A' + 10;
3120 /* The number is specified in decimal. */
3121 while (isdigit (*p
))
3123 num
= num
* 10 + *p
- '0';
3128 /* Store info in RESULT if requested by the caller. */
3131 result
->number_part
= num
;
3133 if (IS_R_SELECT (p
))
3135 result
->l_r_select
= 1;
3138 else if (IS_L_SELECT (p
))
3140 result
->l_r_select
= 0;
3144 result
->l_r_select
= 0;
3149 /* The number might be a predefined register. */
3154 /* Tege hack: Special case for general registers as the general
3155 code makes a binary search with case translation, and is VERY
3160 if (*p
== 'e' && *(p
+ 1) == 't'
3161 && (*(p
+ 2) == '0' || *(p
+ 2) == '1'))
3164 num
= *p
- '0' + 28;
3172 else if (!isdigit (*p
))
3175 as_bad ("Undefined register: '%s'.", name
);
3181 num
= num
* 10 + *p
++ - '0';
3182 while (isdigit (*p
));
3187 /* Do a normal register search. */
3188 while (is_part_of_name (c
))
3194 status
= reg_name_search (name
);
3200 as_bad ("Undefined register: '%s'.", name
);
3206 /* Store info in RESULT if requested by caller. */
3209 result
->number_part
= num
;
3210 if (IS_R_SELECT (p
- 1))
3211 result
->l_r_select
= 1;
3212 else if (IS_L_SELECT (p
- 1))
3213 result
->l_r_select
= 0;
3215 result
->l_r_select
= 0;
3220 /* And finally, it could be a symbol in the absolute section which
3221 is effectively a constant. */
3225 while (is_part_of_name (c
))
3231 if ((sym
= symbol_find (name
)) != NULL
)
3233 if (S_GET_SEGMENT (sym
) == &bfd_abs_section
)
3234 num
= S_GET_VALUE (sym
);
3238 as_bad ("Non-absolute symbol: '%s'.", name
);
3244 /* There is where we'd come for an undefined symbol
3245 or for an empty string. For an empty string we
3246 will return zero. That's a concession made for
3247 compatability with the braindamaged HP assemblers. */
3253 as_bad ("Undefined absolute constant: '%s'.", name
);
3259 /* Store info in RESULT if requested by caller. */
3262 result
->number_part
= num
;
3263 if (IS_R_SELECT (p
- 1))
3264 result
->l_r_select
= 1;
3265 else if (IS_L_SELECT (p
- 1))
3266 result
->l_r_select
= 0;
3268 result
->l_r_select
= 0;
3276 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3278 /* Given NAME, find the register number associated with that name, return
3279 the integer value associated with the given name or -1 on failure. */
3282 reg_name_search (name
)
3285 int middle
, low
, high
;
3289 high
= REG_NAME_CNT
- 1;
3293 middle
= (low
+ high
) / 2;
3294 cmp
= strcasecmp (name
, pre_defined_registers
[middle
].name
);
3300 return pre_defined_registers
[middle
].value
;
3302 while (low
<= high
);
3308 /* Return nonzero if the given INSN and L/R information will require
3309 a new PA-1.1 opcode. */
3312 need_pa11_opcode (insn
, result
)
3314 struct pa_11_fp_reg_struct
*result
;
3316 if (result
->l_r_select
== 1 && !(insn
->fpof1
== DBL
&& insn
->fpof2
== DBL
))
3318 /* If this instruction is specific to a particular architecture,
3319 then set a new architecture. */
3320 if (bfd_get_mach (stdoutput
) < pa11
)
3322 if (!bfd_set_arch_mach (stdoutput
, bfd_arch_hppa
, pa11
))
3323 as_warn ("could not update architecture and machine");
3331 /* Parse a condition for a fcmp instruction. Return the numerical
3332 code associated with the condition. */
3335 pa_parse_fp_cmp_cond (s
)
3342 for (i
= 0; i
< 32; i
++)
3344 if (strncasecmp (*s
, fp_cond_map
[i
].string
,
3345 strlen (fp_cond_map
[i
].string
)) == 0)
3347 cond
= fp_cond_map
[i
].cond
;
3348 *s
+= strlen (fp_cond_map
[i
].string
);
3349 /* If not a complete match, back up the input string and
3351 if (**s
!= ' ' && **s
!= '\t')
3353 *s
-= strlen (fp_cond_map
[i
].string
);
3356 while (**s
== ' ' || **s
== '\t')
3362 as_bad ("Invalid FP Compare Condition: %s", *s
);
3364 /* Advance over the bogus completer. */
3365 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3371 /* Parse an FP operand format completer returning the completer
3374 static fp_operand_format
3375 pa_parse_fp_format (s
)
3384 if (strncasecmp (*s
, "sgl", 3) == 0)
3389 else if (strncasecmp (*s
, "dbl", 3) == 0)
3394 else if (strncasecmp (*s
, "quad", 4) == 0)
3401 format
= ILLEGAL_FMT
;
3402 as_bad ("Invalid FP Operand Format: %3s", *s
);
3409 /* Convert from a selector string into a selector type. */
3412 pa_chk_field_selector (str
)
3415 int middle
, low
, high
;
3419 /* Read past any whitespace. */
3420 /* FIXME: should we read past newlines and formfeeds??? */
3421 while (**str
== ' ' || **str
== '\t' || **str
== '\n' || **str
== '\f')
3424 if ((*str
)[1] == '\'' || (*str
)[1] == '%')
3425 name
[0] = tolower ((*str
)[0]),
3427 else if ((*str
)[2] == '\'' || (*str
)[2] == '%')
3428 name
[0] = tolower ((*str
)[0]),
3429 name
[1] = tolower ((*str
)[1]),
3435 high
= sizeof (selector_table
) / sizeof (struct selector_entry
) - 1;
3439 middle
= (low
+ high
) / 2;
3440 cmp
= strcmp (name
, selector_table
[middle
].prefix
);
3447 *str
+= strlen (name
) + 1;
3448 return selector_table
[middle
].field_selector
;
3451 while (low
<= high
);
3456 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3459 get_expression (str
)
3465 save_in
= input_line_pointer
;
3466 input_line_pointer
= str
;
3467 seg
= expression (&the_insn
.exp
);
3468 if (!(seg
== absolute_section
3469 || seg
== undefined_section
3470 || SEG_NORMAL (seg
)))
3472 as_warn ("Bad segment in expression.");
3473 expr_end
= input_line_pointer
;
3474 input_line_pointer
= save_in
;
3477 expr_end
= input_line_pointer
;
3478 input_line_pointer
= save_in
;
3482 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3484 pa_get_absolute_expression (insn
, strp
)
3490 insn
->field_selector
= pa_chk_field_selector (strp
);
3491 save_in
= input_line_pointer
;
3492 input_line_pointer
= *strp
;
3493 expression (&insn
->exp
);
3494 if (insn
->exp
.X_op
!= O_constant
)
3496 as_bad ("Bad segment (should be absolute).");
3497 expr_end
= input_line_pointer
;
3498 input_line_pointer
= save_in
;
3501 expr_end
= input_line_pointer
;
3502 input_line_pointer
= save_in
;
3503 return evaluate_absolute (insn
);
3506 /* Evaluate an absolute expression EXP which may be modified by
3507 the selector FIELD_SELECTOR. Return the value of the expression. */
3509 evaluate_absolute (insn
)
3514 int field_selector
= insn
->field_selector
;
3517 value
= exp
.X_add_number
;
3519 switch (field_selector
)
3525 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3527 if (value
& 0x00000400)
3529 value
= (value
& 0xfffff800) >> 11;
3532 /* Sign extend from bit 21. */
3534 if (value
& 0x00000400)
3535 value
|= 0xfffff800;
3540 /* Arithmetic shift right 11 bits. */
3542 value
= (value
& 0xfffff800) >> 11;
3545 /* Set bits 0-20 to zero. */
3547 value
= value
& 0x7ff;
3550 /* Add 0x800 and arithmetic shift right 11 bits. */
3553 value
= (value
& 0xfffff800) >> 11;
3556 /* Set bitgs 0-21 to one. */
3558 value
|= 0xfffff800;
3561 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3563 value
= (RSEL_ROUND (value
) & 0x7ff) + (value
- RSEL_ROUND (value
));
3567 value
= (RSEL_ROUND (value
) >> 11) & 0x1fffff;
3572 BAD_CASE (field_selector
);
3578 /* Given an argument location specification return the associated
3579 argument location number. */
3582 pa_build_arg_reloc (type_name
)
3586 if (strncasecmp (type_name
, "no", 2) == 0)
3588 if (strncasecmp (type_name
, "gr", 2) == 0)
3590 else if (strncasecmp (type_name
, "fr", 2) == 0)
3592 else if (strncasecmp (type_name
, "fu", 2) == 0)
3595 as_bad ("Invalid argument location: %s\n", type_name
);
3600 /* Encode and return an argument relocation specification for
3601 the given register in the location specified by arg_reloc. */
3604 pa_align_arg_reloc (reg
, arg_reloc
)
3606 unsigned int arg_reloc
;
3608 unsigned int new_reloc
;
3610 new_reloc
= arg_reloc
;
3626 as_bad ("Invalid argument description: %d", reg
);
3632 /* Parse a PA nullification completer (,n). Return nonzero if the
3633 completer was found; return zero if no completer was found. */
3645 if (strncasecmp (*s
, "n", 1) == 0)
3649 as_bad ("Invalid Nullification: (%c)", **s
);
3658 /* Parse a non-negated compare/subtract completer returning the
3659 number (for encoding in instrutions) of the given completer.
3661 ISBRANCH specifies whether or not this is parsing a condition
3662 completer for a branch (vs a nullification completer for a
3663 computational instruction. */
3666 pa_parse_nonneg_cmpsub_cmpltr (s
, isbranch
)
3671 char *name
= *s
+ 1;
3679 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3683 if (strcmp (name
, "=") == 0)
3687 else if (strcmp (name
, "<") == 0)
3691 else if (strcmp (name
, "<=") == 0)
3695 else if (strcmp (name
, "<<") == 0)
3699 else if (strcmp (name
, "<<=") == 0)
3703 else if (strcasecmp (name
, "sv") == 0)
3707 else if (strcasecmp (name
, "od") == 0)
3711 /* If we have something like addb,n then there is no condition
3713 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3724 /* Reset pointers if this was really a ,n for a branch instruction. */
3725 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3731 /* Parse a negated compare/subtract completer returning the
3732 number (for encoding in instrutions) of the given completer.
3734 ISBRANCH specifies whether or not this is parsing a condition
3735 completer for a branch (vs a nullification completer for a
3736 computational instruction. */
3739 pa_parse_neg_cmpsub_cmpltr (s
, isbranch
)
3744 char *name
= *s
+ 1;
3752 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3756 if (strcasecmp (name
, "tr") == 0)
3760 else if (strcmp (name
, "<>") == 0)
3764 else if (strcmp (name
, ">=") == 0)
3768 else if (strcmp (name
, ">") == 0)
3772 else if (strcmp (name
, ">>=") == 0)
3776 else if (strcmp (name
, ">>") == 0)
3780 else if (strcasecmp (name
, "nsv") == 0)
3784 else if (strcasecmp (name
, "ev") == 0)
3788 /* If we have something like addb,n then there is no condition
3790 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3801 /* Reset pointers if this was really a ,n for a branch instruction. */
3802 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3808 /* Parse a non-negated addition completer returning the number
3809 (for encoding in instrutions) of the given completer.
3811 ISBRANCH specifies whether or not this is parsing a condition
3812 completer for a branch (vs a nullification completer for a
3813 computational instruction. */
3816 pa_parse_nonneg_add_cmpltr (s
, isbranch
)
3821 char *name
= *s
+ 1;
3829 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3833 if (strcmp (name
, "=") == 0)
3837 else if (strcmp (name
, "<") == 0)
3841 else if (strcmp (name
, "<=") == 0)
3845 else if (strcasecmp (name
, "nuv") == 0)
3849 else if (strcasecmp (name
, "znv") == 0)
3853 else if (strcasecmp (name
, "sv") == 0)
3857 else if (strcasecmp (name
, "od") == 0)
3861 /* If we have something like addb,n then there is no condition
3863 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3874 /* Reset pointers if this was really a ,n for a branch instruction. */
3875 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3881 /* Parse a negated addition completer returning the number
3882 (for encoding in instrutions) of the given completer.
3884 ISBRANCH specifies whether or not this is parsing a condition
3885 completer for a branch (vs a nullification completer for a
3886 computational instruction. */
3889 pa_parse_neg_add_cmpltr (s
, isbranch
)
3894 char *name
= *s
+ 1;
3902 while (**s
!= ',' && **s
!= ' ' && **s
!= '\t')
3906 if (strcasecmp (name
, "tr") == 0)
3910 else if (strcmp (name
, "<>") == 0)
3914 else if (strcmp (name
, ">=") == 0)
3918 else if (strcmp (name
, ">") == 0)
3922 else if (strcasecmp (name
, "uv") == 0)
3926 else if (strcasecmp (name
, "vnz") == 0)
3930 else if (strcasecmp (name
, "nsv") == 0)
3934 else if (strcasecmp (name
, "ev") == 0)
3938 /* If we have something like addb,n then there is no condition
3940 else if (strcasecmp (name
, "n") == 0 && isbranch
)
3951 /* Reset pointers if this was really a ,n for a branch instruction. */
3952 if (cmpltr
== 0 && *name
== 'n' && isbranch
)
3958 /* Handle an alignment directive. Special so that we can update the
3959 alignment of the subspace if necessary. */
3963 /* We must have a valid space and subspace. */
3964 pa_check_current_space_and_subspace ();
3966 /* Let the generic gas code do most of the work. */
3967 s_align_bytes (bytes
);
3969 /* If bytes is a power of 2, then update the current subspace's
3970 alignment if necessary. */
3971 if (log2 (bytes
) != -1)
3972 record_alignment (current_subspace
->ssd_seg
, log2 (bytes
));
3975 /* Handle a .BLOCK type pseudo-op. */
3983 unsigned int temp_size
;
3986 /* We must have a valid space and subspace. */
3987 pa_check_current_space_and_subspace ();
3989 temp_size
= get_absolute_expression ();
3991 /* Always fill with zeros, that's what the HP assembler does. */
3994 p
= frag_var (rs_fill
, (int) temp_size
, (int) temp_size
,
3995 (relax_substateT
) 0, (symbolS
*) 0, 1, NULL
);
3996 bzero (p
, temp_size
);
3998 /* Convert 2 bytes at a time. */
4000 for (i
= 0; i
< temp_size
; i
+= 2)
4002 md_number_to_chars (p
+ i
,
4004 (int) ((temp_size
- i
) > 2 ? 2 : (temp_size
- i
)));
4007 pa_undefine_label ();
4008 demand_empty_rest_of_line ();
4011 /* Handle a .CALL pseudo-op. This involves storing away information
4012 about where arguments are to be found so the linker can detect
4013 (and correct) argument location mismatches between caller and callee. */
4019 /* We must have a valid space and subspace. */
4020 pa_check_current_space_and_subspace ();
4022 pa_call_args (&last_call_desc
);
4023 demand_empty_rest_of_line ();
4026 /* Do the dirty work of building a call descriptor which describes
4027 where the caller placed arguments to a function call. */
4030 pa_call_args (call_desc
)
4031 struct call_desc
*call_desc
;
4034 unsigned int temp
, arg_reloc
;
4036 while (!is_end_of_statement ())
4038 name
= input_line_pointer
;
4039 c
= get_symbol_end ();
4040 /* Process a source argument. */
4041 if ((strncasecmp (name
, "argw", 4) == 0))
4043 temp
= atoi (name
+ 4);
4044 p
= input_line_pointer
;
4046 input_line_pointer
++;
4047 name
= input_line_pointer
;
4048 c
= get_symbol_end ();
4049 arg_reloc
= pa_build_arg_reloc (name
);
4050 call_desc
->arg_reloc
|= pa_align_arg_reloc (temp
, arg_reloc
);
4052 /* Process a return value. */
4053 else if ((strncasecmp (name
, "rtnval", 6) == 0))
4055 p
= input_line_pointer
;
4057 input_line_pointer
++;
4058 name
= input_line_pointer
;
4059 c
= get_symbol_end ();
4060 arg_reloc
= pa_build_arg_reloc (name
);
4061 call_desc
->arg_reloc
|= (arg_reloc
& 0x3);
4065 as_bad ("Invalid .CALL argument: %s", name
);
4067 p
= input_line_pointer
;
4069 if (!is_end_of_statement ())
4070 input_line_pointer
++;
4074 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4077 is_same_frag (frag1
, frag2
)
4084 else if (frag2
== NULL
)
4086 else if (frag1
== frag2
)
4088 else if (frag2
->fr_type
== rs_fill
&& frag2
->fr_fix
== 0)
4089 return (is_same_frag (frag1
, frag2
->fr_next
));
4095 /* Build an entry in the UNWIND subspace from the given function
4096 attributes in CALL_INFO. This is not needed for SOM as using
4097 R_ENTRY and R_EXIT relocations allow the linker to handle building
4098 of the unwind spaces. */
4101 pa_build_unwind_subspace (call_info
)
4102 struct call_info
*call_info
;
4105 asection
*seg
, *save_seg
;
4106 subsegT subseg
, save_subseg
;
4110 /* Get into the right seg/subseg. This may involve creating
4111 the seg the first time through. Make sure to have the
4112 old seg/subseg so that we can reset things when we are done. */
4113 subseg
= SUBSEG_UNWIND
;
4114 seg
= bfd_get_section_by_name (stdoutput
, UNWIND_SECTION_NAME
);
4115 if (seg
== ASEC_NULL
)
4117 seg
= bfd_make_section_old_way (stdoutput
, UNWIND_SECTION_NAME
);
4118 bfd_set_section_flags (stdoutput
, seg
,
4119 SEC_READONLY
| SEC_HAS_CONTENTS
4120 | SEC_LOAD
| SEC_RELOC
);
4124 save_subseg
= now_subseg
;
4125 subseg_set (seg
, subseg
);
4128 /* Get some space to hold relocation information for the unwind
4131 md_number_to_chars (p
, 0, 4);
4133 /* Relocation info. for start offset of the function. */
4134 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4135 call_info
->start_symbol
, (offsetT
) 0,
4136 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4139 md_number_to_chars (p
, 0, 4);
4141 /* Relocation info. for end offset of the function.
4143 Because we allow reductions of 32bit relocations for ELF, this will be
4144 reduced to section_sym + offset which avoids putting the temporary
4145 symbol into the symbol table. It (should) end up giving the same
4146 value as call_info->start_symbol + function size once the linker is
4147 finished with its work. */
4149 fix_new_hppa (frag_now
, p
- frag_now
->fr_literal
, 4,
4150 call_info
->end_symbol
, (offsetT
) 0,
4151 (expressionS
*) NULL
, 0, R_PARISC_DIR32
, e_fsel
, 32, 0, NULL
);
4154 unwind
= (char *) &call_info
->ci_unwind
;
4155 for (i
= 8; i
< sizeof (struct unwind_table
); i
++)
4159 FRAG_APPEND_1_CHAR (c
);
4163 /* Return back to the original segment/subsegment. */
4164 subseg_set (save_seg
, save_subseg
);
4168 /* Process a .CALLINFO pseudo-op. This information is used later
4169 to build unwind descriptors and maybe one day to support
4170 .ENTER and .LEAVE. */
4173 pa_callinfo (unused
)
4179 /* We must have a valid space and subspace. */
4180 pa_check_current_space_and_subspace ();
4182 /* .CALLINFO must appear within a procedure definition. */
4183 if (!within_procedure
)
4184 as_bad (".callinfo is not within a procedure definition");
4186 /* Mark the fact that we found the .CALLINFO for the
4187 current procedure. */
4188 callinfo_found
= TRUE
;
4190 /* Iterate over the .CALLINFO arguments. */
4191 while (!is_end_of_statement ())
4193 name
= input_line_pointer
;
4194 c
= get_symbol_end ();
4195 /* Frame size specification. */
4196 if ((strncasecmp (name
, "frame", 5) == 0))
4198 p
= input_line_pointer
;
4200 input_line_pointer
++;
4201 temp
= get_absolute_expression ();
4202 if ((temp
& 0x3) != 0)
4204 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp
);
4208 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4209 last_call_info
->ci_unwind
.descriptor
.frame_size
= temp
/ 8;
4212 /* Entry register (GR, GR and SR) specifications. */
4213 else if ((strncasecmp (name
, "entry_gr", 8) == 0))
4215 p
= input_line_pointer
;
4217 input_line_pointer
++;
4218 temp
= get_absolute_expression ();
4219 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4220 even though %r19 is caller saved. I think this is a bug in
4221 the HP assembler, and we are not going to emulate it. */
4222 if (temp
< 3 || temp
> 18)
4223 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4224 last_call_info
->ci_unwind
.descriptor
.entry_gr
= temp
- 2;
4226 else if ((strncasecmp (name
, "entry_fr", 8) == 0))
4228 p
= input_line_pointer
;
4230 input_line_pointer
++;
4231 temp
= get_absolute_expression ();
4232 /* Similarly the HP assembler takes 31 as the high bound even
4233 though %fr21 is the last callee saved floating point register. */
4234 if (temp
< 12 || temp
> 21)
4235 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4236 last_call_info
->ci_unwind
.descriptor
.entry_fr
= temp
- 11;
4238 else if ((strncasecmp (name
, "entry_sr", 8) == 0))
4240 p
= input_line_pointer
;
4242 input_line_pointer
++;
4243 temp
= get_absolute_expression ();
4245 as_bad ("Value for ENTRY_SR must be 3\n");
4247 /* Note whether or not this function performs any calls. */
4248 else if ((strncasecmp (name
, "calls", 5) == 0) ||
4249 (strncasecmp (name
, "caller", 6) == 0))
4251 p
= input_line_pointer
;
4254 else if ((strncasecmp (name
, "no_calls", 8) == 0))
4256 p
= input_line_pointer
;
4259 /* Should RP be saved into the stack. */
4260 else if ((strncasecmp (name
, "save_rp", 7) == 0))
4262 p
= input_line_pointer
;
4264 last_call_info
->ci_unwind
.descriptor
.save_rp
= 1;
4266 /* Likewise for SP. */
4267 else if ((strncasecmp (name
, "save_sp", 7) == 0))
4269 p
= input_line_pointer
;
4271 last_call_info
->ci_unwind
.descriptor
.save_sp
= 1;
4273 /* Is this an unwindable procedure. If so mark it so
4274 in the unwind descriptor. */
4275 else if ((strncasecmp (name
, "no_unwind", 9) == 0))
4277 p
= input_line_pointer
;
4279 last_call_info
->ci_unwind
.descriptor
.cannot_unwind
= 1;
4281 /* Is this an interrupt routine. If so mark it in the
4282 unwind descriptor. */
4283 else if ((strncasecmp (name
, "hpux_int", 7) == 0))
4285 p
= input_line_pointer
;
4287 last_call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 1;
4289 /* Is this a millicode routine. "millicode" isn't in my
4290 assembler manual, but my copy is old. The HP assembler
4291 accepts it, and there's a place in the unwind descriptor
4292 to drop the information, so we'll accept it too. */
4293 else if ((strncasecmp (name
, "millicode", 9) == 0))
4295 p
= input_line_pointer
;
4297 last_call_info
->ci_unwind
.descriptor
.millicode
= 1;
4301 as_bad ("Invalid .CALLINFO argument: %s", name
);
4302 *input_line_pointer
= c
;
4304 if (!is_end_of_statement ())
4305 input_line_pointer
++;
4308 demand_empty_rest_of_line ();
4311 /* Switch into the code subspace. */
4317 current_space
= is_defined_space ("$TEXT$");
4319 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
4321 pa_undefine_label ();
4324 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4325 the .comm pseudo-op has the following symtax:
4327 <label> .comm <length>
4329 where <label> is optional and is a symbol whose address will be the start of
4330 a block of memory <length> bytes long. <length> must be an absolute
4331 expression. <length> bytes will be allocated in the current space
4334 Also note the label may not even be on the same line as the .comm.
4336 This difference in syntax means the colon function will be called
4337 on the symbol before we arrive in pa_comm. colon will set a number
4338 of attributes of the symbol that need to be fixed here. In particular
4339 the value, section pointer, fragment pointer, flags, etc. What
4342 This also makes error detection all but impossible. */
4350 label_symbol_struct
*label_symbol
= pa_get_label ();
4353 symbol
= label_symbol
->lss_label
;
4358 size
= get_absolute_expression ();
4362 S_SET_VALUE (symbol
, size
);
4363 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4364 S_SET_EXTERNAL (symbol
);
4366 /* colon() has already set the frag to the current location in the
4367 current subspace; we need to reset the fragment to the zero address
4368 fragment. We also need to reset the segment pointer. */
4369 symbol
->sy_frag
= &zero_address_frag
;
4371 demand_empty_rest_of_line ();
4374 /* Process a .END pseudo-op. */
4380 demand_empty_rest_of_line ();
4383 /* Process a .ENTER pseudo-op. This is not supported. */
4388 /* We must have a valid space and subspace. */
4389 pa_check_current_space_and_subspace ();
4394 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4400 /* We must have a valid space and subspace. */
4401 pa_check_current_space_and_subspace ();
4403 if (!within_procedure
)
4404 as_bad ("Misplaced .entry. Ignored.");
4407 if (!callinfo_found
)
4408 as_bad ("Missing .callinfo.");
4410 demand_empty_rest_of_line ();
4411 within_entry_exit
= TRUE
;
4414 /* SOM defers building of unwind descriptors until the link phase.
4415 The assembler is responsible for creating an R_ENTRY relocation
4416 to mark the beginning of a region and hold the unwind bits, and
4417 for creating an R_EXIT relocation to mark the end of the region.
4419 FIXME. ELF should be using the same conventions! The problem
4420 is an unwind requires too much relocation space. Hmmm. Maybe
4421 if we split the unwind bits up between the relocations which
4422 denote the entry and exit points. */
4423 if (last_call_info
->start_symbol
!= NULL
)
4425 char *where
= frag_more (0);
4427 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4428 NULL
, (offsetT
) 0, NULL
,
4429 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4430 (int *) &last_call_info
->ci_unwind
.descriptor
);
4435 /* Handle a .EQU pseudo-op. */
4441 label_symbol_struct
*label_symbol
= pa_get_label ();
4446 symbol
= label_symbol
->lss_label
;
4448 S_SET_VALUE (symbol
, pa_parse_number (&input_line_pointer
, 0));
4450 S_SET_VALUE (symbol
, (unsigned int) get_absolute_expression ());
4451 S_SET_SEGMENT (symbol
, bfd_abs_section_ptr
);
4456 as_bad (".REG must use a label");
4458 as_bad (".EQU must use a label");
4461 pa_undefine_label ();
4462 demand_empty_rest_of_line ();
4465 /* Helper function. Does processing for the end of a function. This
4466 usually involves creating some relocations or building special
4467 symbols to mark the end of the function. */
4474 where
= frag_more (0);
4477 /* Mark the end of the function, stuff away the location of the frag
4478 for the end of the function, and finally call pa_build_unwind_subspace
4479 to add an entry in the unwind table. */
4480 hppa_elf_mark_end_of_function ();
4481 pa_build_unwind_subspace (last_call_info
);
4483 /* SOM defers building of unwind descriptors until the link phase.
4484 The assembler is responsible for creating an R_ENTRY relocation
4485 to mark the beginning of a region and hold the unwind bits, and
4486 for creating an R_EXIT relocation to mark the end of the region.
4488 FIXME. ELF should be using the same conventions! The problem
4489 is an unwind requires too much relocation space. Hmmm. Maybe
4490 if we split the unwind bits up between the relocations which
4491 denote the entry and exit points. */
4492 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4494 NULL
, 0, R_HPPA_EXIT
, e_fsel
, 0, 0,
4495 (int *) &last_call_info
->ci_unwind
.descriptor
+ 1);
4499 /* Process a .EXIT pseudo-op. */
4505 /* We must have a valid space and subspace. */
4506 pa_check_current_space_and_subspace ();
4508 if (!within_procedure
)
4509 as_bad (".EXIT must appear within a procedure");
4512 if (!callinfo_found
)
4513 as_bad ("Missing .callinfo");
4516 if (!within_entry_exit
)
4517 as_bad ("No .ENTRY for this .EXIT");
4520 within_entry_exit
= FALSE
;
4525 demand_empty_rest_of_line ();
4528 /* Process a .EXPORT directive. This makes functions external
4529 and provides information such as argument relocation entries
4539 name
= input_line_pointer
;
4540 c
= get_symbol_end ();
4541 /* Make sure the given symbol exists. */
4542 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4544 as_bad ("Cannot define export symbol: %s\n", name
);
4545 p
= input_line_pointer
;
4547 input_line_pointer
++;
4551 /* OK. Set the external bits and process argument relocations. */
4552 S_SET_EXTERNAL (symbol
);
4553 p
= input_line_pointer
;
4555 if (!is_end_of_statement ())
4557 input_line_pointer
++;
4558 pa_type_args (symbol
, 1);
4562 demand_empty_rest_of_line ();
4565 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4568 pa_type_args (symbolP
, is_export
)
4573 unsigned int temp
, arg_reloc
;
4574 pa_symbol_type type
= SYMBOL_TYPE_UNKNOWN
;
4575 obj_symbol_type
*symbol
= (obj_symbol_type
*) symbolP
->bsym
;
4577 if (strncasecmp (input_line_pointer
, "absolute", 8) == 0)
4580 input_line_pointer
+= 8;
4581 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4582 S_SET_SEGMENT (symbolP
, bfd_abs_section_ptr
);
4583 type
= SYMBOL_TYPE_ABSOLUTE
;
4585 else if (strncasecmp (input_line_pointer
, "code", 4) == 0)
4587 input_line_pointer
+= 4;
4588 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4589 instead one should be IMPORTing/EXPORTing ENTRY types.
4591 Complain if one tries to EXPORT a CODE type since that's never
4592 done. Both GCC and HP C still try to IMPORT CODE types, so
4593 silently fix them to be ENTRY types. */
4594 if (symbolP
->bsym
->flags
& BSF_FUNCTION
)
4597 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP
->bsym
->name
);
4599 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4600 type
= SYMBOL_TYPE_ENTRY
;
4604 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4605 type
= SYMBOL_TYPE_CODE
;
4608 else if (strncasecmp (input_line_pointer
, "data", 4) == 0)
4610 input_line_pointer
+= 4;
4611 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4612 type
= SYMBOL_TYPE_DATA
;
4614 else if ((strncasecmp (input_line_pointer
, "entry", 5) == 0))
4616 input_line_pointer
+= 5;
4617 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4618 type
= SYMBOL_TYPE_ENTRY
;
4620 else if (strncasecmp (input_line_pointer
, "millicode", 9) == 0)
4622 input_line_pointer
+= 9;
4623 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4624 type
= SYMBOL_TYPE_MILLICODE
;
4626 else if (strncasecmp (input_line_pointer
, "plabel", 6) == 0)
4628 input_line_pointer
+= 6;
4629 symbolP
->bsym
->flags
&= ~BSF_FUNCTION
;
4630 type
= SYMBOL_TYPE_PLABEL
;
4632 else if (strncasecmp (input_line_pointer
, "pri_prog", 8) == 0)
4634 input_line_pointer
+= 8;
4635 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4636 type
= SYMBOL_TYPE_PRI_PROG
;
4638 else if (strncasecmp (input_line_pointer
, "sec_prog", 8) == 0)
4640 input_line_pointer
+= 8;
4641 symbolP
->bsym
->flags
|= BSF_FUNCTION
;
4642 type
= SYMBOL_TYPE_SEC_PROG
;
4645 /* SOM requires much more information about symbol types
4646 than BFD understands. This is how we get this information
4647 to the SOM BFD backend. */
4648 #ifdef obj_set_symbol_type
4649 obj_set_symbol_type (symbolP
->bsym
, (int) type
);
4652 /* Now that the type of the exported symbol has been handled,
4653 handle any argument relocation information. */
4654 while (!is_end_of_statement ())
4656 if (*input_line_pointer
== ',')
4657 input_line_pointer
++;
4658 name
= input_line_pointer
;
4659 c
= get_symbol_end ();
4660 /* Argument sources. */
4661 if ((strncasecmp (name
, "argw", 4) == 0))
4663 p
= input_line_pointer
;
4665 input_line_pointer
++;
4666 temp
= atoi (name
+ 4);
4667 name
= input_line_pointer
;
4668 c
= get_symbol_end ();
4669 arg_reloc
= pa_align_arg_reloc (temp
, pa_build_arg_reloc (name
));
4670 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4671 *input_line_pointer
= c
;
4673 /* The return value. */
4674 else if ((strncasecmp (name
, "rtnval", 6)) == 0)
4676 p
= input_line_pointer
;
4678 input_line_pointer
++;
4679 name
= input_line_pointer
;
4680 c
= get_symbol_end ();
4681 arg_reloc
= pa_build_arg_reloc (name
);
4682 symbol
->tc_data
.hppa_arg_reloc
|= arg_reloc
;
4683 *input_line_pointer
= c
;
4685 /* Privelege level. */
4686 else if ((strncasecmp (name
, "priv_lev", 8)) == 0)
4688 p
= input_line_pointer
;
4690 input_line_pointer
++;
4691 temp
= atoi (input_line_pointer
);
4692 c
= get_symbol_end ();
4693 *input_line_pointer
= c
;
4697 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name
);
4698 p
= input_line_pointer
;
4701 if (!is_end_of_statement ())
4702 input_line_pointer
++;
4706 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4707 assembly file must either be defined in the assembly file, or
4708 explicitly IMPORTED from another. */
4717 name
= input_line_pointer
;
4718 c
= get_symbol_end ();
4720 symbol
= symbol_find (name
);
4721 /* Ugh. We might be importing a symbol defined earlier in the file,
4722 in which case all the code below will really screw things up
4723 (set the wrong segment, symbol flags & type, etc). */
4724 if (symbol
== NULL
|| !S_IS_DEFINED (symbol
))
4726 symbol
= symbol_find_or_make (name
);
4727 p
= input_line_pointer
;
4730 if (!is_end_of_statement ())
4732 input_line_pointer
++;
4733 pa_type_args (symbol
, 0);
4737 /* Sigh. To be compatable with the HP assembler and to help
4738 poorly written assembly code, we assign a type based on
4739 the the current segment. Note only BSF_FUNCTION really
4740 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4741 if (now_seg
== text_section
)
4742 symbol
->bsym
->flags
|= BSF_FUNCTION
;
4744 /* If the section is undefined, then the symbol is undefined
4745 Since this is an import, leave the section undefined. */
4746 S_SET_SEGMENT (symbol
, bfd_und_section_ptr
);
4751 /* The symbol was already defined. Just eat everything up to
4752 the end of the current statement. */
4753 while (!is_end_of_statement ())
4754 input_line_pointer
++;
4757 demand_empty_rest_of_line ();
4760 /* Handle a .LABEL pseudo-op. */
4768 name
= input_line_pointer
;
4769 c
= get_symbol_end ();
4771 if (strlen (name
) > 0)
4774 p
= input_line_pointer
;
4779 as_warn ("Missing label name on .LABEL");
4782 if (!is_end_of_statement ())
4784 as_warn ("extra .LABEL arguments ignored.");
4785 ignore_rest_of_line ();
4787 demand_empty_rest_of_line ();
4790 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4796 /* We must have a valid space and subspace. */
4797 pa_check_current_space_and_subspace ();
4802 /* Handle a .ORIGIN pseudo-op. */
4808 /* We must have a valid space and subspace. */
4809 pa_check_current_space_and_subspace ();
4812 pa_undefine_label ();
4815 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4816 is for static functions. FIXME. Should share more code with .EXPORT. */
4825 name
= input_line_pointer
;
4826 c
= get_symbol_end ();
4828 if ((symbol
= symbol_find_or_make (name
)) == NULL
)
4830 as_bad ("Cannot define static symbol: %s\n", name
);
4831 p
= input_line_pointer
;
4833 input_line_pointer
++;
4837 S_CLEAR_EXTERNAL (symbol
);
4838 p
= input_line_pointer
;
4840 if (!is_end_of_statement ())
4842 input_line_pointer
++;
4843 pa_type_args (symbol
, 0);
4847 demand_empty_rest_of_line ();
4850 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4851 of a procedure from a syntatical point of view. */
4857 struct call_info
*call_info
;
4859 /* We must have a valid space and subspace. */
4860 pa_check_current_space_and_subspace ();
4862 if (within_procedure
)
4863 as_fatal ("Nested procedures");
4865 /* Reset global variables for new procedure. */
4866 callinfo_found
= FALSE
;
4867 within_procedure
= TRUE
;
4869 /* Create another call_info structure. */
4870 call_info
= (struct call_info
*) xmalloc (sizeof (struct call_info
));
4873 as_fatal ("Cannot allocate unwind descriptor\n");
4875 bzero (call_info
, sizeof (struct call_info
));
4877 call_info
->ci_next
= NULL
;
4879 if (call_info_root
== NULL
)
4881 call_info_root
= call_info
;
4882 last_call_info
= call_info
;
4886 last_call_info
->ci_next
= call_info
;
4887 last_call_info
= call_info
;
4890 /* set up defaults on call_info structure */
4892 call_info
->ci_unwind
.descriptor
.cannot_unwind
= 0;
4893 call_info
->ci_unwind
.descriptor
.region_desc
= 1;
4894 call_info
->ci_unwind
.descriptor
.hpux_interrupt_marker
= 0;
4896 /* If we got a .PROC pseudo-op, we know that the function is defined
4897 locally. Make sure it gets into the symbol table. */
4899 label_symbol_struct
*label_symbol
= pa_get_label ();
4903 if (label_symbol
->lss_label
)
4905 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4906 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4909 as_bad ("Missing function name for .PROC (corrupted label chain)");
4912 last_call_info
->start_symbol
= NULL
;
4915 demand_empty_rest_of_line ();
4918 /* Process the syntatical end of a procedure. Make sure all the
4919 appropriate pseudo-ops were found within the procedure. */
4926 /* We must have a valid space and subspace. */
4927 pa_check_current_space_and_subspace ();
4929 /* If we are within a procedure definition, make sure we've
4930 defined a label for the procedure; handle case where the
4931 label was defined after the .PROC directive.
4933 Note there's not need to diddle with the segment or fragment
4934 for the label symbol in this case. We have already switched
4935 into the new $CODE$ subspace at this point. */
4936 if (within_procedure
&& last_call_info
->start_symbol
== NULL
)
4938 label_symbol_struct
*label_symbol
= pa_get_label ();
4942 if (label_symbol
->lss_label
)
4944 last_call_info
->start_symbol
= label_symbol
->lss_label
;
4945 label_symbol
->lss_label
->bsym
->flags
|= BSF_FUNCTION
;
4947 /* Also handle allocation of a fixup to hold the unwind
4948 information when the label appears after the proc/procend. */
4949 if (within_entry_exit
)
4951 char *where
= frag_more (0);
4953 fix_new_hppa (frag_now
, where
- frag_now
->fr_literal
, 0,
4954 NULL
, (offsetT
) 0, NULL
,
4955 0, R_HPPA_ENTRY
, e_fsel
, 0, 0,
4956 (int *) &last_call_info
->ci_unwind
.descriptor
);
4961 as_bad ("Missing function name for .PROC (corrupted label chain)");
4964 as_bad ("Missing function name for .PROC");
4967 if (!within_procedure
)
4968 as_bad ("misplaced .procend");
4970 if (!callinfo_found
)
4971 as_bad ("Missing .callinfo for this procedure");
4973 if (within_entry_exit
)
4974 as_bad ("Missing .EXIT for a .ENTRY");
4977 /* ELF needs to mark the end of each function so that it can compute
4978 the size of the function (apparently its needed in the symbol table). */
4979 hppa_elf_mark_end_of_function ();
4982 within_procedure
= FALSE
;
4983 demand_empty_rest_of_line ();
4984 pa_undefine_label ();
4987 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4988 then create a new space entry to hold the information specified
4989 by the parameters to the .SPACE directive. */
4991 static sd_chain_struct
*
4992 pa_parse_space_stmt (space_name
, create_flag
)
4996 char *name
, *ptemp
, c
;
4997 char loadable
, defined
, private, sort
;
4999 asection
*seg
= NULL
;
5000 sd_chain_struct
*space
;
5002 /* load default values */
5008 if (strcmp (space_name
, "$TEXT$") == 0)
5010 seg
= pa_def_spaces
[0].segment
;
5011 defined
= pa_def_spaces
[0].defined
;
5012 private = pa_def_spaces
[0].private;
5013 sort
= pa_def_spaces
[0].sort
;
5014 spnum
= pa_def_spaces
[0].spnum
;
5016 else if (strcmp (space_name
, "$PRIVATE$") == 0)
5018 seg
= pa_def_spaces
[1].segment
;
5019 defined
= pa_def_spaces
[1].defined
;
5020 private = pa_def_spaces
[1].private;
5021 sort
= pa_def_spaces
[1].sort
;
5022 spnum
= pa_def_spaces
[1].spnum
;
5025 if (!is_end_of_statement ())
5027 print_errors
= FALSE
;
5028 ptemp
= input_line_pointer
+ 1;
5029 /* First see if the space was specified as a number rather than
5030 as a name. According to the PA assembly manual the rest of
5031 the line should be ignored. */
5032 temp
= pa_parse_number (&ptemp
, 0);
5036 input_line_pointer
= ptemp
;
5040 while (!is_end_of_statement ())
5042 input_line_pointer
++;
5043 name
= input_line_pointer
;
5044 c
= get_symbol_end ();
5045 if ((strncasecmp (name
, "spnum", 5) == 0))
5047 *input_line_pointer
= c
;
5048 input_line_pointer
++;
5049 spnum
= get_absolute_expression ();
5051 else if ((strncasecmp (name
, "sort", 4) == 0))
5053 *input_line_pointer
= c
;
5054 input_line_pointer
++;
5055 sort
= get_absolute_expression ();
5057 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5059 *input_line_pointer
= c
;
5062 else if ((strncasecmp (name
, "notdefined", 10) == 0))
5064 *input_line_pointer
= c
;
5067 else if ((strncasecmp (name
, "private", 7) == 0))
5069 *input_line_pointer
= c
;
5074 as_bad ("Invalid .SPACE argument");
5075 *input_line_pointer
= c
;
5076 if (!is_end_of_statement ())
5077 input_line_pointer
++;
5081 print_errors
= TRUE
;
5084 if (create_flag
&& seg
== NULL
)
5085 seg
= subseg_new (space_name
, 0);
5087 /* If create_flag is nonzero, then create the new space with
5088 the attributes computed above. Else set the values in
5089 an already existing space -- this can only happen for
5090 the first occurence of a built-in space. */
5092 space
= create_new_space (space_name
, spnum
, loadable
, defined
,
5093 private, sort
, seg
, 1);
5096 space
= is_defined_space (space_name
);
5097 SPACE_SPNUM (space
) = spnum
;
5098 SPACE_DEFINED (space
) = defined
& 1;
5099 SPACE_USER_DEFINED (space
) = 1;
5102 #ifdef obj_set_section_attributes
5103 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5109 /* Handle a .SPACE pseudo-op; this switches the current space to the
5110 given space, creating the new space if necessary. */
5116 char *name
, c
, *space_name
, *save_s
;
5118 sd_chain_struct
*sd_chain
;
5120 if (within_procedure
)
5122 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5123 ignore_rest_of_line ();
5127 /* Check for some of the predefined spaces. FIXME: most of the code
5128 below is repeated several times, can we extract the common parts
5129 and place them into a subroutine or something similar? */
5130 /* FIXME Is this (and the next IF stmt) really right?
5131 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5132 if (strncmp (input_line_pointer
, "$TEXT$", 6) == 0)
5134 input_line_pointer
+= 6;
5135 sd_chain
= is_defined_space ("$TEXT$");
5136 if (sd_chain
== NULL
)
5137 sd_chain
= pa_parse_space_stmt ("$TEXT$", 1);
5138 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5139 sd_chain
= pa_parse_space_stmt ("$TEXT$", 0);
5141 current_space
= sd_chain
;
5142 subseg_set (text_section
, sd_chain
->sd_last_subseg
);
5144 = pa_subsegment_to_subspace (text_section
,
5145 sd_chain
->sd_last_subseg
);
5146 demand_empty_rest_of_line ();
5149 if (strncmp (input_line_pointer
, "$PRIVATE$", 9) == 0)
5151 input_line_pointer
+= 9;
5152 sd_chain
= is_defined_space ("$PRIVATE$");
5153 if (sd_chain
== NULL
)
5154 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 1);
5155 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5156 sd_chain
= pa_parse_space_stmt ("$PRIVATE$", 0);
5158 current_space
= sd_chain
;
5159 subseg_set (data_section
, sd_chain
->sd_last_subseg
);
5161 = pa_subsegment_to_subspace (data_section
,
5162 sd_chain
->sd_last_subseg
);
5163 demand_empty_rest_of_line ();
5166 if (!strncasecmp (input_line_pointer
,
5167 GDB_DEBUG_SPACE_NAME
,
5168 strlen (GDB_DEBUG_SPACE_NAME
)))
5170 input_line_pointer
+= strlen (GDB_DEBUG_SPACE_NAME
);
5171 sd_chain
= is_defined_space (GDB_DEBUG_SPACE_NAME
);
5172 if (sd_chain
== NULL
)
5173 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 1);
5174 else if (SPACE_USER_DEFINED (sd_chain
) == 0)
5175 sd_chain
= pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME
, 0);
5177 current_space
= sd_chain
;
5180 asection
*gdb_section
5181 = bfd_make_section_old_way (stdoutput
, GDB_DEBUG_SPACE_NAME
);
5183 subseg_set (gdb_section
, sd_chain
->sd_last_subseg
);
5185 = pa_subsegment_to_subspace (gdb_section
,
5186 sd_chain
->sd_last_subseg
);
5188 demand_empty_rest_of_line ();
5192 /* It could be a space specified by number. */
5194 save_s
= input_line_pointer
;
5195 if ((temp
= pa_parse_number (&input_line_pointer
, 0)) >= 0)
5197 if ((sd_chain
= pa_find_space_by_number (temp
)))
5199 current_space
= sd_chain
;
5201 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5203 = pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5204 sd_chain
->sd_last_subseg
);
5205 demand_empty_rest_of_line ();
5210 /* Not a number, attempt to create a new space. */
5212 input_line_pointer
= save_s
;
5213 name
= input_line_pointer
;
5214 c
= get_symbol_end ();
5215 space_name
= xmalloc (strlen (name
) + 1);
5216 strcpy (space_name
, name
);
5217 *input_line_pointer
= c
;
5219 sd_chain
= pa_parse_space_stmt (space_name
, 1);
5220 current_space
= sd_chain
;
5222 subseg_set (sd_chain
->sd_seg
, sd_chain
->sd_last_subseg
);
5223 current_subspace
= pa_subsegment_to_subspace (sd_chain
->sd_seg
,
5224 sd_chain
->sd_last_subseg
);
5225 demand_empty_rest_of_line ();
5229 /* Switch to a new space. (I think). FIXME. */
5238 sd_chain_struct
*space
;
5240 name
= input_line_pointer
;
5241 c
= get_symbol_end ();
5242 space
= is_defined_space (name
);
5246 md_number_to_chars (p
, SPACE_SPNUM (space
), 4);
5249 as_warn ("Undefined space: '%s' Assuming space number = 0.", name
);
5251 *input_line_pointer
= c
;
5252 demand_empty_rest_of_line ();
5255 /* If VALUE is an exact power of two between zero and 2^31, then
5256 return log2 (VALUE). Else return -1. */
5264 while ((1 << shift
) != value
&& shift
< 32)
5273 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5274 given subspace, creating the new subspace if necessary.
5276 FIXME. Should mirror pa_space more closely, in particular how
5277 they're broken up into subroutines. */
5280 pa_subspace (unused
)
5283 char *name
, *ss_name
, *alias
, c
;
5284 char loadable
, code_only
, common
, dup_common
, zero
, sort
;
5285 int i
, access
, space_index
, alignment
, quadrant
, applicable
, flags
;
5286 sd_chain_struct
*space
;
5287 ssd_chain_struct
*ssd
;
5290 if (current_space
== NULL
)
5291 as_fatal ("Must be in a space before changing or declaring subspaces.\n");
5293 if (within_procedure
)
5295 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5296 ignore_rest_of_line ();
5300 name
= input_line_pointer
;
5301 c
= get_symbol_end ();
5302 ss_name
= xmalloc (strlen (name
) + 1);
5303 strcpy (ss_name
, name
);
5304 *input_line_pointer
= c
;
5306 /* Load default values. */
5319 space
= current_space
;
5320 ssd
= is_defined_subspace (ss_name
);
5321 /* Allow user to override the builtin attributes of subspaces. But
5322 only allow the attributes to be changed once! */
5323 if (ssd
&& SUBSPACE_DEFINED (ssd
))
5325 subseg_set (ssd
->ssd_seg
, ssd
->ssd_subseg
);
5326 current_subspace
= ssd
;
5327 if (!is_end_of_statement ())
5328 as_warn ("Parameters of an existing subspace can\'t be modified");
5329 demand_empty_rest_of_line ();
5334 /* A new subspace. Load default values if it matches one of
5335 the builtin subspaces. */
5337 while (pa_def_subspaces
[i
].name
)
5339 if (strcasecmp (pa_def_subspaces
[i
].name
, ss_name
) == 0)
5341 loadable
= pa_def_subspaces
[i
].loadable
;
5342 common
= pa_def_subspaces
[i
].common
;
5343 dup_common
= pa_def_subspaces
[i
].dup_common
;
5344 code_only
= pa_def_subspaces
[i
].code_only
;
5345 zero
= pa_def_subspaces
[i
].zero
;
5346 space_index
= pa_def_subspaces
[i
].space_index
;
5347 alignment
= pa_def_subspaces
[i
].alignment
;
5348 quadrant
= pa_def_subspaces
[i
].quadrant
;
5349 access
= pa_def_subspaces
[i
].access
;
5350 sort
= pa_def_subspaces
[i
].sort
;
5351 if (USE_ALIASES
&& pa_def_subspaces
[i
].alias
)
5352 alias
= pa_def_subspaces
[i
].alias
;
5359 /* We should be working with a new subspace now. Fill in
5360 any information as specified by the user. */
5361 if (!is_end_of_statement ())
5363 input_line_pointer
++;
5364 while (!is_end_of_statement ())
5366 name
= input_line_pointer
;
5367 c
= get_symbol_end ();
5368 if ((strncasecmp (name
, "quad", 4) == 0))
5370 *input_line_pointer
= c
;
5371 input_line_pointer
++;
5372 quadrant
= get_absolute_expression ();
5374 else if ((strncasecmp (name
, "align", 5) == 0))
5376 *input_line_pointer
= c
;
5377 input_line_pointer
++;
5378 alignment
= get_absolute_expression ();
5379 if (log2 (alignment
) == -1)
5381 as_bad ("Alignment must be a power of 2");
5385 else if ((strncasecmp (name
, "access", 6) == 0))
5387 *input_line_pointer
= c
;
5388 input_line_pointer
++;
5389 access
= get_absolute_expression ();
5391 else if ((strncasecmp (name
, "sort", 4) == 0))
5393 *input_line_pointer
= c
;
5394 input_line_pointer
++;
5395 sort
= get_absolute_expression ();
5397 else if ((strncasecmp (name
, "code_only", 9) == 0))
5399 *input_line_pointer
= c
;
5402 else if ((strncasecmp (name
, "unloadable", 10) == 0))
5404 *input_line_pointer
= c
;
5407 else if ((strncasecmp (name
, "common", 6) == 0))
5409 *input_line_pointer
= c
;
5412 else if ((strncasecmp (name
, "dup_comm", 8) == 0))
5414 *input_line_pointer
= c
;
5417 else if ((strncasecmp (name
, "zero", 4) == 0))
5419 *input_line_pointer
= c
;
5422 else if ((strncasecmp (name
, "first", 5) == 0))
5423 as_bad ("FIRST not supported as a .SUBSPACE argument");
5425 as_bad ("Invalid .SUBSPACE argument");
5426 if (!is_end_of_statement ())
5427 input_line_pointer
++;
5431 /* Compute a reasonable set of BFD flags based on the information
5432 in the .subspace directive. */
5433 applicable
= bfd_applicable_section_flags (stdoutput
);
5436 flags
|= (SEC_ALLOC
| SEC_LOAD
);
5439 if (common
|| dup_common
)
5440 flags
|= SEC_IS_COMMON
;
5442 flags
|= SEC_RELOC
| SEC_HAS_CONTENTS
;
5444 /* This is a zero-filled subspace (eg BSS). */
5446 flags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
5448 applicable
&= flags
;
5450 /* If this is an existing subspace, then we want to use the
5451 segment already associated with the subspace.
5453 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5454 lots of sections. It might be a problem in the PA ELF
5455 code, I do not know yet. For now avoid creating anything
5456 but the "standard" sections for ELF. */
5458 section
= ssd
->ssd_seg
;
5460 section
= subseg_new (alias
, 0);
5461 else if (!alias
&& USE_ALIASES
)
5463 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5464 demand_empty_rest_of_line ();
5468 section
= subseg_new (ss_name
, 0);
5471 seg_info (section
)->bss
= 1;
5473 /* Now set the flags. */
5474 bfd_set_section_flags (stdoutput
, section
, applicable
);
5476 /* Record any alignment request for this section. */
5477 record_alignment (section
, log2 (alignment
));
5479 /* Set the starting offset for this section. */
5480 bfd_set_section_vma (stdoutput
, section
,
5481 pa_subspace_start (space
, quadrant
));
5483 /* Now that all the flags are set, update an existing subspace,
5484 or create a new one. */
5487 current_subspace
= update_subspace (space
, ss_name
, loadable
,
5488 code_only
, common
, dup_common
,
5489 sort
, zero
, access
, space_index
,
5490 alignment
, quadrant
,
5493 current_subspace
= create_new_subspace (space
, ss_name
, loadable
,
5495 dup_common
, zero
, sort
,
5496 access
, space_index
,
5497 alignment
, quadrant
, section
);
5499 demand_empty_rest_of_line ();
5500 current_subspace
->ssd_seg
= section
;
5501 subseg_set (current_subspace
->ssd_seg
, current_subspace
->ssd_subseg
);
5503 SUBSPACE_DEFINED (current_subspace
) = 1;
5507 /* Create default space and subspace dictionaries. */
5514 space_dict_root
= NULL
;
5515 space_dict_last
= NULL
;
5518 while (pa_def_spaces
[i
].name
)
5522 /* Pick the right name to use for the new section. */
5523 if (pa_def_spaces
[i
].alias
&& USE_ALIASES
)
5524 name
= pa_def_spaces
[i
].alias
;
5526 name
= pa_def_spaces
[i
].name
;
5528 pa_def_spaces
[i
].segment
= subseg_new (name
, 0);
5529 create_new_space (pa_def_spaces
[i
].name
, pa_def_spaces
[i
].spnum
,
5530 pa_def_spaces
[i
].loadable
, pa_def_spaces
[i
].defined
,
5531 pa_def_spaces
[i
].private, pa_def_spaces
[i
].sort
,
5532 pa_def_spaces
[i
].segment
, 0);
5537 while (pa_def_subspaces
[i
].name
)
5540 int applicable
, subsegment
;
5541 asection
*segment
= NULL
;
5542 sd_chain_struct
*space
;
5544 /* Pick the right name for the new section and pick the right
5545 subsegment number. */
5546 if (pa_def_subspaces
[i
].alias
&& USE_ALIASES
)
5548 name
= pa_def_subspaces
[i
].alias
;
5549 subsegment
= pa_def_subspaces
[i
].subsegment
;
5553 name
= pa_def_subspaces
[i
].name
;
5557 /* Create the new section. */
5558 segment
= subseg_new (name
, subsegment
);
5561 /* For SOM we want to replace the standard .text, .data, and .bss
5562 sections with our own. We also want to set BFD flags for
5563 all the built-in subspaces. */
5564 if (!strcmp (pa_def_subspaces
[i
].name
, "$CODE$") && !USE_ALIASES
)
5566 text_section
= segment
;
5567 applicable
= bfd_applicable_section_flags (stdoutput
);
5568 bfd_set_section_flags (stdoutput
, segment
,
5569 applicable
& (SEC_ALLOC
| SEC_LOAD
5570 | SEC_RELOC
| SEC_CODE
5572 | SEC_HAS_CONTENTS
));
5574 else if (!strcmp (pa_def_subspaces
[i
].name
, "$DATA$") && !USE_ALIASES
)
5576 data_section
= segment
;
5577 applicable
= bfd_applicable_section_flags (stdoutput
);
5578 bfd_set_section_flags (stdoutput
, segment
,
5579 applicable
& (SEC_ALLOC
| SEC_LOAD
5581 | SEC_HAS_CONTENTS
));
5585 else if (!strcmp (pa_def_subspaces
[i
].name
, "$BSS$") && !USE_ALIASES
)
5587 bss_section
= segment
;
5588 applicable
= bfd_applicable_section_flags (stdoutput
);
5589 bfd_set_section_flags (stdoutput
, segment
,
5590 applicable
& SEC_ALLOC
);
5592 else if (!strcmp (pa_def_subspaces
[i
].name
, "$LIT$") && !USE_ALIASES
)
5594 applicable
= bfd_applicable_section_flags (stdoutput
);
5595 bfd_set_section_flags (stdoutput
, segment
,
5596 applicable
& (SEC_ALLOC
| SEC_LOAD
5599 | SEC_HAS_CONTENTS
));
5601 else if (!strcmp (pa_def_subspaces
[i
].name
, "$UNWIND$") && !USE_ALIASES
)
5603 applicable
= bfd_applicable_section_flags (stdoutput
);
5604 bfd_set_section_flags (stdoutput
, segment
,
5605 applicable
& (SEC_ALLOC
| SEC_LOAD
5608 | SEC_HAS_CONTENTS
));
5611 /* Find the space associated with this subspace. */
5612 space
= pa_segment_to_space (pa_def_spaces
[pa_def_subspaces
[i
].
5613 def_space_index
].segment
);
5616 as_fatal ("Internal error: Unable to find containing space for %s.",
5617 pa_def_subspaces
[i
].name
);
5620 create_new_subspace (space
, name
,
5621 pa_def_subspaces
[i
].loadable
,
5622 pa_def_subspaces
[i
].code_only
,
5623 pa_def_subspaces
[i
].common
,
5624 pa_def_subspaces
[i
].dup_common
,
5625 pa_def_subspaces
[i
].zero
,
5626 pa_def_subspaces
[i
].sort
,
5627 pa_def_subspaces
[i
].access
,
5628 pa_def_subspaces
[i
].space_index
,
5629 pa_def_subspaces
[i
].alignment
,
5630 pa_def_subspaces
[i
].quadrant
,
5638 /* Create a new space NAME, with the appropriate flags as defined
5639 by the given parameters. */
5641 static sd_chain_struct
*
5642 create_new_space (name
, spnum
, loadable
, defined
, private,
5643 sort
, seg
, user_defined
)
5653 sd_chain_struct
*chain_entry
;
5655 chain_entry
= (sd_chain_struct
*) xmalloc (sizeof (sd_chain_struct
));
5657 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5660 SPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5661 strcpy (SPACE_NAME (chain_entry
), name
);
5662 SPACE_DEFINED (chain_entry
) = defined
;
5663 SPACE_USER_DEFINED (chain_entry
) = user_defined
;
5664 SPACE_SPNUM (chain_entry
) = spnum
;
5666 chain_entry
->sd_seg
= seg
;
5667 chain_entry
->sd_last_subseg
= -1;
5668 chain_entry
->sd_subspaces
= NULL
;
5669 chain_entry
->sd_next
= NULL
;
5671 /* Find spot for the new space based on its sort key. */
5672 if (!space_dict_last
)
5673 space_dict_last
= chain_entry
;
5675 if (space_dict_root
== NULL
)
5676 space_dict_root
= chain_entry
;
5679 sd_chain_struct
*chain_pointer
;
5680 sd_chain_struct
*prev_chain_pointer
;
5682 chain_pointer
= space_dict_root
;
5683 prev_chain_pointer
= NULL
;
5685 while (chain_pointer
)
5687 prev_chain_pointer
= chain_pointer
;
5688 chain_pointer
= chain_pointer
->sd_next
;
5691 /* At this point we've found the correct place to add the new
5692 entry. So add it and update the linked lists as appropriate. */
5693 if (prev_chain_pointer
)
5695 chain_entry
->sd_next
= chain_pointer
;
5696 prev_chain_pointer
->sd_next
= chain_entry
;
5700 space_dict_root
= chain_entry
;
5701 chain_entry
->sd_next
= chain_pointer
;
5704 if (chain_entry
->sd_next
== NULL
)
5705 space_dict_last
= chain_entry
;
5708 /* This is here to catch predefined spaces which do not get
5709 modified by the user's input. Another call is found at
5710 the bottom of pa_parse_space_stmt to handle cases where
5711 the user modifies a predefined space. */
5712 #ifdef obj_set_section_attributes
5713 obj_set_section_attributes (seg
, defined
, private, sort
, spnum
);
5719 /* Create a new subspace NAME, with the appropriate flags as defined
5720 by the given parameters.
5722 Add the new subspace to the subspace dictionary chain in numerical
5723 order as defined by the SORT entries. */
5725 static ssd_chain_struct
*
5726 create_new_subspace (space
, name
, loadable
, code_only
, common
,
5727 dup_common
, is_zero
, sort
, access
, space_index
,
5728 alignment
, quadrant
, seg
)
5729 sd_chain_struct
*space
;
5731 int loadable
, code_only
, common
, dup_common
, is_zero
;
5739 ssd_chain_struct
*chain_entry
;
5741 chain_entry
= (ssd_chain_struct
*) xmalloc (sizeof (ssd_chain_struct
));
5743 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name
);
5745 SUBSPACE_NAME (chain_entry
) = (char *) xmalloc (strlen (name
) + 1);
5746 strcpy (SUBSPACE_NAME (chain_entry
), name
);
5748 /* Initialize subspace_defined. When we hit a .subspace directive
5749 we'll set it to 1 which "locks-in" the subspace attributes. */
5750 SUBSPACE_DEFINED (chain_entry
) = 0;
5752 chain_entry
->ssd_subseg
= USE_ALIASES
? pa_next_subseg (space
) : 0;
5753 chain_entry
->ssd_seg
= seg
;
5754 chain_entry
->ssd_next
= NULL
;
5756 /* Find spot for the new subspace based on its sort key. */
5757 if (space
->sd_subspaces
== NULL
)
5758 space
->sd_subspaces
= chain_entry
;
5761 ssd_chain_struct
*chain_pointer
;
5762 ssd_chain_struct
*prev_chain_pointer
;
5764 chain_pointer
= space
->sd_subspaces
;
5765 prev_chain_pointer
= NULL
;
5767 while (chain_pointer
)
5769 prev_chain_pointer
= chain_pointer
;
5770 chain_pointer
= chain_pointer
->ssd_next
;
5773 /* Now we have somewhere to put the new entry. Insert it and update
5775 if (prev_chain_pointer
)
5777 chain_entry
->ssd_next
= chain_pointer
;
5778 prev_chain_pointer
->ssd_next
= chain_entry
;
5782 space
->sd_subspaces
= chain_entry
;
5783 chain_entry
->ssd_next
= chain_pointer
;
5787 #ifdef obj_set_subsection_attributes
5788 obj_set_subsection_attributes (seg
, space
->sd_seg
, access
,
5795 /* Update the information for the given subspace based upon the
5796 various arguments. Return the modified subspace chain entry. */
5798 static ssd_chain_struct
*
5799 update_subspace (space
, name
, loadable
, code_only
, common
, dup_common
, sort
,
5800 zero
, access
, space_index
, alignment
, quadrant
, section
)
5801 sd_chain_struct
*space
;
5815 ssd_chain_struct
*chain_entry
;
5817 chain_entry
= is_defined_subspace (name
);
5819 #ifdef obj_set_subsection_attributes
5820 obj_set_subsection_attributes (section
, space
->sd_seg
, access
,
5827 /* Return the space chain entry for the space with the name NAME or
5828 NULL if no such space exists. */
5830 static sd_chain_struct
*
5831 is_defined_space (name
)
5834 sd_chain_struct
*chain_pointer
;
5836 for (chain_pointer
= space_dict_root
;
5838 chain_pointer
= chain_pointer
->sd_next
)
5840 if (strcmp (SPACE_NAME (chain_pointer
), name
) == 0)
5841 return chain_pointer
;
5844 /* No mapping from segment to space was found. Return NULL. */
5848 /* Find and return the space associated with the given seg. If no mapping
5849 from the given seg to a space is found, then return NULL.
5851 Unlike subspaces, the number of spaces is not expected to grow much,
5852 so a linear exhaustive search is OK here. */
5854 static sd_chain_struct
*
5855 pa_segment_to_space (seg
)
5858 sd_chain_struct
*space_chain
;
5860 /* Walk through each space looking for the correct mapping. */
5861 for (space_chain
= space_dict_root
;
5863 space_chain
= space_chain
->sd_next
)
5865 if (space_chain
->sd_seg
== seg
)
5869 /* Mapping was not found. Return NULL. */
5873 /* Return the space chain entry for the subspace with the name NAME or
5874 NULL if no such subspace exists.
5876 Uses a linear search through all the spaces and subspaces, this may
5877 not be appropriate if we ever being placing each function in its
5880 static ssd_chain_struct
*
5881 is_defined_subspace (name
)
5884 sd_chain_struct
*space_chain
;
5885 ssd_chain_struct
*subspace_chain
;
5887 /* Walk through each space. */
5888 for (space_chain
= space_dict_root
;
5890 space_chain
= space_chain
->sd_next
)
5892 /* Walk through each subspace looking for a name which matches. */
5893 for (subspace_chain
= space_chain
->sd_subspaces
;
5895 subspace_chain
= subspace_chain
->ssd_next
)
5896 if (strcmp (SUBSPACE_NAME (subspace_chain
), name
) == 0)
5897 return subspace_chain
;
5900 /* Subspace wasn't found. Return NULL. */
5904 /* Find and return the subspace associated with the given seg. If no
5905 mapping from the given seg to a subspace is found, then return NULL.
5907 If we ever put each procedure/function within its own subspace
5908 (to make life easier on the compiler and linker), then this will have
5909 to become more efficient. */
5911 static ssd_chain_struct
*
5912 pa_subsegment_to_subspace (seg
, subseg
)
5916 sd_chain_struct
*space_chain
;
5917 ssd_chain_struct
*subspace_chain
;
5919 /* Walk through each space. */
5920 for (space_chain
= space_dict_root
;
5922 space_chain
= space_chain
->sd_next
)
5924 if (space_chain
->sd_seg
== seg
)
5926 /* Walk through each subspace within each space looking for
5927 the correct mapping. */
5928 for (subspace_chain
= space_chain
->sd_subspaces
;
5930 subspace_chain
= subspace_chain
->ssd_next
)
5931 if (subspace_chain
->ssd_subseg
== (int) subseg
)
5932 return subspace_chain
;
5936 /* No mapping from subsegment to subspace found. Return NULL. */
5940 /* Given a number, try and find a space with the name number.
5942 Return a pointer to a space dictionary chain entry for the space
5943 that was found or NULL on failure. */
5945 static sd_chain_struct
*
5946 pa_find_space_by_number (number
)
5949 sd_chain_struct
*space_chain
;
5951 for (space_chain
= space_dict_root
;
5953 space_chain
= space_chain
->sd_next
)
5955 if (SPACE_SPNUM (space_chain
) == number
)
5959 /* No appropriate space found. Return NULL. */
5963 /* Return the starting address for the given subspace. If the starting
5964 address is unknown then return zero. */
5967 pa_subspace_start (space
, quadrant
)
5968 sd_chain_struct
*space
;
5971 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5972 is not correct for the PA OSF1 port. */
5973 if ((strcmp (SPACE_NAME (space
), "$PRIVATE$") == 0) && quadrant
== 1)
5975 else if (space
->sd_seg
== data_section
&& quadrant
== 1)
5981 /* FIXME. Needs documentation. */
5983 pa_next_subseg (space
)
5984 sd_chain_struct
*space
;
5987 space
->sd_last_subseg
++;
5988 return space
->sd_last_subseg
;
5991 /* Helper function for pa_stringer. Used to find the end of
5998 unsigned int c
= *s
& CHAR_MASK
;
6000 /* We must have a valid space and subspace. */
6001 pa_check_current_space_and_subspace ();
6014 /* Handle a .STRING type pseudo-op. */
6017 pa_stringer (append_zero
)
6020 char *s
, num_buf
[4];
6024 /* Preprocess the string to handle PA-specific escape sequences.
6025 For example, \xDD where DD is a hexidecimal number should be
6026 changed to \OOO where OOO is an octal number. */
6028 /* Skip the opening quote. */
6029 s
= input_line_pointer
+ 1;
6031 while (is_a_char (c
= pa_stringer_aux (s
++)))
6038 /* Handle \x<num>. */
6041 unsigned int number
;
6046 /* Get pas the 'x'. */
6048 for (num_digit
= 0, number
= 0, dg
= *s
;
6050 && (isdigit (dg
) || (dg
>= 'a' && dg
<= 'f')
6051 || (dg
>= 'A' && dg
<= 'F'));
6055 number
= number
* 16 + dg
- '0';
6056 else if (dg
>= 'a' && dg
<= 'f')
6057 number
= number
* 16 + dg
- 'a' + 10;
6059 number
= number
* 16 + dg
- 'A' + 10;
6069 sprintf (num_buf
, "%02o", number
);
6072 sprintf (num_buf
, "%03o", number
);
6075 for (i
= 0; i
<= num_digit
; i
++)
6076 s_start
[i
] = num_buf
[i
];
6080 /* This might be a "\"", skip over the escaped char. */
6087 stringer (append_zero
);
6088 pa_undefine_label ();
6091 /* Handle a .VERSION pseudo-op. */
6098 pa_undefine_label ();
6101 /* Handle a .COPYRIGHT pseudo-op. */
6104 pa_copyright (unused
)
6108 pa_undefine_label ();
6111 /* Just like a normal cons, but when finished we have to undefine
6112 the latest space label. */
6119 pa_undefine_label ();
6122 /* Switch to the data space. As usual delete our label. */
6128 current_space
= is_defined_space ("$PRIVATE$");
6130 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6132 pa_undefine_label ();
6135 /* Like float_cons, but we need to undefine our label. */
6138 pa_float_cons (float_type
)
6141 float_cons (float_type
);
6142 pa_undefine_label ();
6145 /* Like s_fill, but delete our label when finished. */
6151 /* We must have a valid space and subspace. */
6152 pa_check_current_space_and_subspace ();
6155 pa_undefine_label ();
6158 /* Like lcomm, but delete our label when finished. */
6161 pa_lcomm (needs_align
)
6164 /* We must have a valid space and subspace. */
6165 pa_check_current_space_and_subspace ();
6167 s_lcomm (needs_align
);
6168 pa_undefine_label ();
6171 /* Like lsym, but delete our label when finished. */
6177 /* We must have a valid space and subspace. */
6178 pa_check_current_space_and_subspace ();
6181 pa_undefine_label ();
6184 /* Switch to the text space. Like s_text, but delete our
6185 label when finished. */
6190 current_space
= is_defined_space ("$TEXT$");
6192 = pa_subsegment_to_subspace (current_space
->sd_seg
, 0);
6195 pa_undefine_label ();
6198 /* On the PA relocations which involve function symbols must not be
6199 adjusted. This so that the linker can know when/how to create argument
6200 relocation stubs for indirect calls and calls to static functions.
6202 "T" field selectors create DLT relative fixups for accessing
6203 globals and statics in PIC code; each DLT relative fixup creates
6204 an entry in the DLT table. The entries contain the address of
6205 the final target (eg accessing "foo" would create a DLT entry
6206 with the address of "foo").
6208 Unfortunately, the HP linker doesn't take into account any addend
6209 when generating the DLT; so accessing $LIT$+8 puts the address of
6210 $LIT$ into the DLT rather than the address of $LIT$+8.
6212 The end result is we can't perform relocation symbol reductions for
6213 any fixup which creates entries in the DLT (eg they use "T" field
6216 Reject reductions involving symbols with external scope; such
6217 reductions make life a living hell for object file editors.
6219 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6220 the code space. The SOM BFD backend doesn't know how to pull the
6221 right bits out of an instruction. */
6224 hppa_fix_adjustable (fixp
)
6227 struct hppa_fix_struct
*hppa_fix
;
6229 hppa_fix
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6232 /* Reject reductions of symbols in 32bit relocs. */
6233 if (fixp
->fx_r_type
== R_HPPA
&& hppa_fix
->fx_r_format
== 32)
6236 /* Reject reductions of symbols in sym1-sym2 expressions when
6237 the fixup will occur in a CODE subspace.
6239 XXX FIXME: Long term we probably want to reject all of these;
6240 for example reducing in the debug section would lose if we ever
6241 supported using the optimizing hp linker. */
6244 && (hppa_fix
->segment
->flags
& SEC_CODE
))
6246 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
6247 fixp
->fx_subsy
->sy_used_in_reloc
= 1;
6252 /* Reject reductions of symbols in DLT relative relocs,
6253 relocations with plabels. */
6254 if (hppa_fix
->fx_r_field
== e_tsel
6255 || hppa_fix
->fx_r_field
== e_ltsel
6256 || hppa_fix
->fx_r_field
== e_rtsel
6257 || hppa_fix
->fx_r_field
== e_psel
6258 || hppa_fix
->fx_r_field
== e_rpsel
6259 || hppa_fix
->fx_r_field
== e_lpsel
)
6262 if (fixp
->fx_addsy
&& fixp
->fx_addsy
->bsym
->flags
& BSF_GLOBAL
)
6265 /* Reject reductions of function symbols. */
6266 if (fixp
->fx_addsy
== 0
6267 || (fixp
->fx_addsy
->bsym
->flags
& BSF_FUNCTION
) == 0)
6273 /* Return nonzero if the fixup in FIXP will require a relocation,
6274 even it if appears that the fixup could be completely handled
6278 hppa_force_relocation (fixp
)
6281 struct hppa_fix_struct
*hppa_fixp
;
6284 hppa_fixp
= (struct hppa_fix_struct
*) fixp
->tc_fix_data
;
6286 if (fixp
->fx_r_type
== R_HPPA_ENTRY
|| fixp
->fx_r_type
== R_HPPA_EXIT
6287 || (fixp
->fx_addsy
!= NULL
&& fixp
->fx_subsy
!= NULL
6288 && (hppa_fixp
->segment
->flags
& SEC_CODE
) != 0))
6292 #define arg_reloc_stub_needed(CALLER, CALLEE) \
6293 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6295 /* It is necessary to force PC-relative calls/jumps to have a relocation
6296 entry if they're going to need either a argument relocation or long
6297 call stub. FIXME. Can't we need the same for absolute calls? */
6298 if (fixp
->fx_pcrel
&& fixp
->fx_addsy
6299 && (arg_reloc_stub_needed (((obj_symbol_type
*)
6300 fixp
->fx_addsy
->bsym
)->tc_data
.hppa_arg_reloc
,
6302 hppa_fixp
->fx_arg_reloc
)))
6304 distance
= (fixp
->fx_offset
+ S_GET_VALUE (fixp
->fx_addsy
)
6305 - md_pcrel_from (fixp
));
6306 /* Now check and see if we're going to need a long-branch stub. */
6307 if (fixp
->fx_r_type
== R_HPPA_PCREL_CALL
6308 && (distance
> 262143 || distance
< -262144))
6311 #undef arg_reloc_stub_needed
6313 /* No need (yet) to force another relocations to be emitted. */
6317 /* Now for some ELF specific code. FIXME. */
6319 /* Mark the end of a function so that it's possible to compute
6320 the size of the function in hppa_elf_final_processing. */
6323 hppa_elf_mark_end_of_function ()
6325 /* ELF does not have EXIT relocations. All we do is create a
6326 temporary symbol marking the end of the function. */
6327 char *name
= (char *)
6328 xmalloc (strlen ("L$\001end_") +
6329 strlen (S_GET_NAME (last_call_info
->start_symbol
)) + 1);
6335 strcpy (name
, "L$\001end_");
6336 strcat (name
, S_GET_NAME (last_call_info
->start_symbol
));
6338 /* If we have a .exit followed by a .procend, then the
6339 symbol will have already been defined. */
6340 symbolP
= symbol_find (name
);
6343 /* The symbol has already been defined! This can
6344 happen if we have a .exit followed by a .procend.
6346 This is *not* an error. All we want to do is free
6347 the memory we just allocated for the name and continue. */
6352 /* symbol value should be the offset of the
6353 last instruction of the function */
6354 symbolP
= symbol_new (name
, now_seg
,
6355 (valueT
) (obstack_next_free (&frags
)
6356 - frag_now
->fr_literal
- 4),
6360 symbolP
->bsym
->flags
= BSF_LOCAL
;
6361 symbol_table_insert (symbolP
);
6365 last_call_info
->end_symbol
= symbolP
;
6367 as_bad ("Symbol '%s' could not be created.", name
);
6371 as_bad ("No memory for symbol name.");
6375 /* For ELF, this function serves one purpose: to setup the st_size
6376 field of STT_FUNC symbols. To do this, we need to scan the
6377 call_info structure list, determining st_size in by taking the
6378 difference in the address of the beginning/end marker symbols. */
6381 elf_hppa_final_processing ()
6383 struct call_info
*call_info_pointer
;
6385 for (call_info_pointer
= call_info_root
;
6387 call_info_pointer
= call_info_pointer
->ci_next
)
6389 elf_symbol_type
*esym
6390 = (elf_symbol_type
*) call_info_pointer
->start_symbol
->bsym
;
6391 esym
->internal_elf_sym
.st_size
=
6392 S_GET_VALUE (call_info_pointer
->end_symbol
)
6393 - S_GET_VALUE (call_info_pointer
->start_symbol
) + 4;