1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* HP PA-RISC support was contributed by the Center for Software Science
22 at the University of Utah. */
30 #include "../bfd/libhppa.h"
31 #include "../bfd/libbfd.h"
33 /* Be careful, this file includes data *declarations*. */
34 #include "opcode/hppa.h"
36 /* A "convient" place to put object file dependencies which do
37 not need to be seen outside of tc-hppa.c. */
39 /* Names of various debugging spaces/subspaces. */
40 #define GDB_DEBUG_SPACE_NAME ".stab"
41 #define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
42 #define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
43 #define UNWIND_SECTION_NAME ".PARISC.unwind"
44 /* Nonzero if CODE is a fixup code needing further processing. */
46 /* Object file formats specify relocation types. */
47 typedef elf32_hppa_reloc_type reloc_type;
49 /* Object file formats specify BFD symbol types. */
50 typedef elf_symbol_type obj_symbol_type;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type hppa_elf_gen_reloc_type
55 /* ELF objects can have versions, but apparently do not have anywhere
56 to store a copyright string. */
57 #define obj_version obj_elf_version
58 #define obj_copyright obj_elf_version
60 /* Use space aliases. */
65 /* Names of various debugging spaces/subspaces. */
66 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
67 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
68 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
69 #define UNWIND_SECTION_NAME "$UNWIND$"
71 /* Object file formats specify relocation types. */
72 typedef int reloc_type;
74 /* SOM objects can have both a version string and a copyright string. */
75 #define obj_version obj_som_version
76 #define obj_copyright obj_som_copyright
78 /* Do not use space aliases. */
81 /* How to generate a relocation. */
82 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
84 /* Object file formats specify BFD symbol types. */
85 typedef som_symbol_type obj_symbol_type;
87 /* This apparently isn't in older versions of hpux reloc.h. */
89 #define R_DLT_REL 0x78
93 /* Various structures and types used internally in tc-hppa.c. */
95 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
99 unsigned int cannot_unwind:1;
100 unsigned int millicode:1;
101 unsigned int millicode_save_rest:1;
102 unsigned int region_desc:2;
103 unsigned int save_sr:2;
104 unsigned int entry_fr:4;
105 unsigned int entry_gr:5;
106 unsigned int args_stored:1;
107 unsigned int call_fr:5;
108 unsigned int call_gr:5;
109 unsigned int save_sp:1;
110 unsigned int save_rp:1;
111 unsigned int save_rp_in_frame:1;
112 unsigned int extn_ptr_defined:1;
113 unsigned int cleanup_defined:1;
115 unsigned int hpe_interrupt_marker:1;
116 unsigned int hpux_interrupt_marker:1;
117 unsigned int reserved:3;
118 unsigned int frame_size:27;
123 /* Starting and ending offsets of the region described by
125 unsigned int start_offset;
126 unsigned int end_offset;
127 struct unwind_desc descriptor;
130 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
131 control the entry and exit code they generate. It is also used in
132 creation of the correct stack unwind descriptors.
134 NOTE: GAS does not support .enter and .leave for the generation of
135 prologues and epilogues. FIXME.
137 The fields in structure roughly correspond to the arguments available on the
138 .callinfo pseudo-op. */
142 /* The unwind descriptor being built. */
143 struct unwind_table ci_unwind;
145 /* Name of this function. */
146 symbolS *start_symbol;
148 /* (temporary) symbol used to mark the end of this function. */
151 /* Next entry in the chain. */
152 struct call_info *ci_next;
155 /* Operand formats for FP instructions. Note not all FP instructions
156 allow all four formats to be used (for example fmpysub only allows
160 SGL, DBL, ILLEGAL_FMT, QUAD
164 /* This fully describes the symbol types which may be attached to
165 an EXPORT or IMPORT directive. Only SOM uses this formation
166 (ELF has no need for it). */
170 SYMBOL_TYPE_ABSOLUTE,
174 SYMBOL_TYPE_MILLICODE,
176 SYMBOL_TYPE_PRI_PROG,
177 SYMBOL_TYPE_SEC_PROG,
181 /* This structure contains information needed to assemble
182 individual instructions. */
185 /* Holds the opcode after parsing by pa_ip. */
186 unsigned long opcode;
188 /* Holds an expression associated with the current instruction. */
191 /* Does this instruction use PC-relative addressing. */
194 /* Floating point formats for operand1 and operand2. */
195 fp_operand_format fpof1;
196 fp_operand_format fpof2;
198 /* Holds the field selector for this instruction
199 (for example L%, LR%, etc). */
202 /* Holds any argument relocation bits associated with this
203 instruction. (instruction should be some sort of call). */
206 /* The format specification for this instruction. */
209 /* The relocation (if any) associated with this instruction. */
213 /* PA-89 floating point registers are arranged like this:
216 +--------------+--------------+
217 | 0 or 16L | 16 or 16R |
218 +--------------+--------------+
219 | 1 or 17L | 17 or 17R |
220 +--------------+--------------+
228 +--------------+--------------+
229 | 14 or 30L | 30 or 30R |
230 +--------------+--------------+
231 | 15 or 31L | 31 or 31R |
232 +--------------+--------------+
235 The following is a version of pa_parse_number that
236 handles the L/R notation and returns the correct
237 value to put into the instruction register field.
238 The correct value to put into the instruction is
239 encoded in the structure 'pa_89_fp_reg_struct'. */
241 struct pa_89_fp_reg_struct
243 /* The register number. */
250 /* Additional information needed to build argument relocation stubs. */
253 /* The argument relocation specification. */
254 unsigned int arg_reloc;
256 /* Number of arguments. */
257 unsigned int arg_count;
260 /* This structure defines an entry in the subspace dictionary
263 struct subspace_dictionary_chain
265 /* Nonzero if this space has been defined by the user code. */
266 unsigned int ssd_defined;
268 /* Name of this subspace. */
271 /* GAS segment and subsegment associated with this subspace. */
275 /* Next space in the subspace dictionary chain. */
276 struct subspace_dictionary_chain *ssd_next;
279 typedef struct subspace_dictionary_chain ssd_chain_struct;
281 /* This structure defines an entry in the subspace dictionary
284 struct space_dictionary_chain
286 /* Nonzero if this space has been defined by the user code or
287 as a default space. */
288 unsigned int sd_defined;
290 /* Nonzero if this spaces has been defined by the user code. */
291 unsigned int sd_user_defined;
293 /* The space number (or index). */
294 unsigned int sd_spnum;
296 /* The name of this subspace. */
299 /* GAS segment to which this subspace corresponds. */
302 /* Current subsegment number being used. */
305 /* The chain of subspaces contained within this space. */
306 ssd_chain_struct *sd_subspaces;
308 /* The next entry in the space dictionary chain. */
309 struct space_dictionary_chain *sd_next;
312 typedef struct space_dictionary_chain sd_chain_struct;
314 /* Structure for previous label tracking. Needed so that alignments,
315 callinfo declarations, etc can be easily attached to a particular
317 typedef struct label_symbol_struct
319 struct symbol *lss_label;
320 sd_chain_struct *lss_space;
321 struct label_symbol_struct *lss_next;
325 /* This structure defines attributes of the default subspace
326 dictionary entries. */
328 struct default_subspace_dict
330 /* Name of the subspace. */
333 /* FIXME. Is this still needed? */
336 /* Nonzero if this subspace is loadable. */
339 /* Nonzero if this subspace contains only code. */
342 /* Nonzero if this is a common subspace. */
345 /* Nonzero if this is a common subspace which allows symbols
346 to be multiply defined. */
349 /* Nonzero if this subspace should be zero filled. */
352 /* Sort key for this subspace. */
355 /* Access control bits for this subspace. Can represent RWX access
356 as well as privilege level changes for gateways. */
359 /* Index of containing space. */
362 /* Alignment (in bytes) of this subspace. */
365 /* Quadrant within space where this subspace should be loaded. */
368 /* An index into the default spaces array. */
371 /* An alias for this section (or NULL if no alias exists). */
374 /* Subsegment associated with this subspace. */
378 /* This structure defines attributes of the default space
379 dictionary entries. */
381 struct default_space_dict
383 /* Name of the space. */
386 /* Space number. It is possible to identify spaces within
387 assembly code numerically! */
390 /* Nonzero if this space is loadable. */
393 /* Nonzero if this space is "defined". FIXME is still needed */
396 /* Nonzero if this space can not be shared. */
399 /* Sort key for this space. */
402 /* Segment associated with this space. */
405 /* An alias for this section (or NULL if no alias exists). */
409 /* Extra information needed to perform fixups (relocations) on the PA. */
410 struct hppa_fix_struct
412 /* The field selector. */
413 enum hppa_reloc_field_selector_type fx_r_field;
418 /* Format of fixup. */
421 /* Argument relocation bits. */
424 /* The unwind descriptor associated with this fixup. */
427 /* The segment this fixup appears in. */
431 /* Structure to hold information about predefined registers. */
439 /* This structure defines the mapping from a FP condition string
440 to a condition number which can be recorded in an instruction. */
447 /* This structure defines a mapping from a field selector
448 string to a field selector type. */
449 struct selector_entry
455 /* Prototypes for functions local to tc-hppa.c. */
457 static fp_operand_format pa_parse_fp_format PARAMS ((char **s));
458 static void pa_cons PARAMS ((int));
459 static void pa_data PARAMS ((int));
460 static void pa_float_cons PARAMS ((int));
461 static void pa_fill PARAMS ((int));
462 static void pa_lcomm PARAMS ((int));
463 static void pa_lsym PARAMS ((int));
464 static void pa_stringer PARAMS ((int));
465 static void pa_text PARAMS ((int));
466 static void pa_version PARAMS ((int));
467 static int pa_parse_fp_cmp_cond PARAMS ((char **));
468 static int get_expression PARAMS ((char *));
469 static int pa_get_absolute_expression PARAMS ((struct pa_it *, char **));
470 static int evaluate_absolute PARAMS ((struct pa_it *));
471 static unsigned int pa_build_arg_reloc PARAMS ((char *));
472 static unsigned int pa_align_arg_reloc PARAMS ((unsigned int, unsigned int));
473 static int pa_parse_nullif PARAMS ((char **));
474 static int pa_parse_nonneg_cmpsub_cmpltr PARAMS ((char **, int));
475 static int pa_parse_neg_cmpsub_cmpltr PARAMS ((char **, int));
476 static int pa_parse_neg_add_cmpltr PARAMS ((char **, int));
477 static int pa_parse_nonneg_add_cmpltr PARAMS ((char **, int));
478 static void pa_block PARAMS ((int));
479 static void pa_call PARAMS ((int));
480 static void pa_call_args PARAMS ((struct call_desc *));
481 static void pa_callinfo PARAMS ((int));
482 static void pa_code PARAMS ((int));
483 static void pa_comm PARAMS ((int));
484 static void pa_copyright PARAMS ((int));
485 static void pa_end PARAMS ((int));
486 static void pa_enter PARAMS ((int));
487 static void pa_entry PARAMS ((int));
488 static void pa_equ PARAMS ((int));
489 static void pa_exit PARAMS ((int));
490 static void pa_export PARAMS ((int));
491 static void pa_type_args PARAMS ((symbolS *, int));
492 static void pa_import PARAMS ((int));
493 static void pa_label PARAMS ((int));
494 static void pa_leave PARAMS ((int));
495 static void pa_origin PARAMS ((int));
496 static void pa_proc PARAMS ((int));
497 static void pa_procend PARAMS ((int));
498 static void pa_space PARAMS ((int));
499 static void pa_spnum PARAMS ((int));
500 static void pa_subspace PARAMS ((int));
501 static void pa_param PARAMS ((int));
502 static void pa_undefine_label PARAMS ((void));
503 static int need_89_opcode PARAMS ((struct pa_it *,
504 struct pa_89_fp_reg_struct *));
505 static int pa_parse_number PARAMS ((char **, struct pa_89_fp_reg_struct *));
506 static label_symbol_struct *pa_get_label PARAMS ((void));
507 static sd_chain_struct *create_new_space PARAMS ((char *, int, int,
510 static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *,
515 static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *,
516 char *, int, int, int,
520 static sd_chain_struct *is_defined_space PARAMS ((char *));
521 static ssd_chain_struct *is_defined_subspace PARAMS ((char *));
522 static sd_chain_struct *pa_segment_to_space PARAMS ((asection *));
523 static ssd_chain_struct *pa_subsegment_to_subspace PARAMS ((asection *,
525 static sd_chain_struct *pa_find_space_by_number PARAMS ((int));
526 static unsigned int pa_subspace_start PARAMS ((sd_chain_struct *, int));
527 static void pa_ip PARAMS ((char *));
528 static void fix_new_hppa PARAMS ((fragS *, int, int, symbolS *,
529 long, expressionS *, int,
530 bfd_reloc_code_real_type,
531 enum hppa_reloc_field_selector_type,
533 static int is_end_of_statement PARAMS ((void));
534 static int reg_name_search PARAMS ((char *));
535 static int pa_chk_field_selector PARAMS ((char **));
536 static int is_same_frag PARAMS ((fragS *, fragS *));
537 static void pa_build_unwind_subspace PARAMS ((struct call_info *));
538 static void process_exit PARAMS ((void));
539 static sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int));
540 static int log2 PARAMS ((int));
541 static int pa_next_subseg PARAMS ((sd_chain_struct *));
542 static unsigned int pa_stringer_aux PARAMS ((char *));
543 static void pa_spaces_begin PARAMS ((void));
544 static void hppa_elf_mark_end_of_function PARAMS ((void));
546 /* File and gloally scoped variable declarations. */
548 /* Root and final entry in the space chain. */
549 static sd_chain_struct *space_dict_root;
550 static sd_chain_struct *space_dict_last;
552 /* The current space and subspace. */
553 static sd_chain_struct *current_space;
554 static ssd_chain_struct *current_subspace;
556 /* Root of the call_info chain. */
557 static struct call_info *call_info_root;
559 /* The last call_info (for functions) structure
560 seen so it can be associated with fixups and
562 static struct call_info *last_call_info;
564 /* The last call description (for actual calls). */
565 static struct call_desc last_call_desc;
567 /* Relaxation isn't supported for the PA yet. */
568 const relax_typeS md_relax_table[] =
571 /* Jumps are always the same size -- one instruction. */
572 int md_short_jump_size = 4;
573 int md_long_jump_size = 4;
575 /* handle of the OPCODE hash table */
576 static struct hash_control *op_hash = NULL;
578 /* This array holds the chars that always start a comment. If the
579 pre-processor is disabled, these aren't very useful. */
580 const char comment_chars[] = ";";
582 /* Table of pseudo ops for the PA. FIXME -- how many of these
583 are now redundant with the overall GAS and the object file
585 const pseudo_typeS md_pseudo_table[] =
587 /* align pseudo-ops on the PA specify the actual alignment requested,
588 not the log2 of the requested alignment. */
589 {"align", s_align_bytes, 8},
590 {"block", pa_block, 1},
591 {"blockz", pa_block, 0},
592 {"byte", pa_cons, 1},
593 {"call", pa_call, 0},
594 {"callinfo", pa_callinfo, 0},
595 {"code", pa_code, 0},
596 {"comm", pa_comm, 0},
597 {"copyright", pa_copyright, 0},
598 {"data", pa_data, 0},
599 {"double", pa_float_cons, 'd'},
601 {"enter", pa_enter, 0},
602 {"entry", pa_entry, 0},
604 {"exit", pa_exit, 0},
605 {"export", pa_export, 0},
606 {"fill", pa_fill, 0},
607 {"float", pa_float_cons, 'f'},
608 {"half", pa_cons, 2},
609 {"import", pa_import, 0},
611 {"label", pa_label, 0},
612 {"lcomm", pa_lcomm, 0},
613 {"leave", pa_leave, 0},
614 {"long", pa_cons, 4},
615 {"lsym", pa_lsym, 0},
616 {"octa", pa_cons, 16},
617 {"org", pa_origin, 0},
618 {"origin", pa_origin, 0},
619 {"param", pa_param, 0},
620 {"proc", pa_proc, 0},
621 {"procend", pa_procend, 0},
622 {"quad", pa_cons, 8},
624 {"short", pa_cons, 2},
625 {"single", pa_float_cons, 'f'},
626 {"space", pa_space, 0},
627 {"spnum", pa_spnum, 0},
628 {"string", pa_stringer, 0},
629 {"stringz", pa_stringer, 1},
630 {"subspa", pa_subspace, 0},
631 {"text", pa_text, 0},
632 {"version", pa_version, 0},
633 {"word", pa_cons, 4},
637 /* This array holds the chars that only start a comment at the beginning of
638 a line. If the line seems to have the form '# 123 filename'
639 .line and .file directives will appear in the pre-processed output.
641 Note that input_file.c hand checks for '#' at the beginning of the
642 first line of the input file. This is because the compiler outputs
643 #NO_APP at the beginning of its output.
645 Also note that '/*' will always start a comment. */
646 const char line_comment_chars[] = "#";
648 /* This array holds the characters which act as line separators. */
649 const char line_separator_chars[] = "!";
651 /* Chars that can be used to separate mant from exp in floating point nums. */
652 const char EXP_CHARS[] = "eE";
654 /* Chars that mean this number is a floating point constant.
655 As in 0f12.456 or 0d1.2345e12.
657 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
658 changed in read.c. Ideally it shouldn't hae to know abou it at
659 all, but nothing is ideal around here. */
660 const char FLT_CHARS[] = "rRsSfFdDxXpP";
662 static struct pa_it the_insn;
664 /* Points to the end of an expression just parsed by get_expressoin
665 and friends. FIXME. This shouldn't be handled with a file-global
667 static char *expr_end;
669 /* Nonzero if a .callinfo appeared within the current procedure. */
670 static int callinfo_found;
672 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
673 static int within_entry_exit;
675 /* Nonzero if the assembler is currently within a procedure definition. */
676 static int within_procedure;
678 /* Handle on strucutre which keep track of the last symbol
679 seen in each subspace. */
680 static label_symbol_struct *label_symbols_rootp = NULL;
682 /* Holds the last field selector. */
683 static int hppa_field_selector;
685 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
686 static symbolS *dummy_symbol;
688 /* Nonzero if errors are to be printed. */
689 static int print_errors = 1;
691 /* List of registers that are pre-defined:
693 Each general register has one predefined name of the form
694 %r<REGNUM> which has the value <REGNUM>.
696 Space and control registers are handled in a similar manner,
697 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
699 Likewise for the floating point registers, but of the form
700 %fr<REGNUM>. Floating point registers have additional predefined
701 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
702 again have the value <REGNUM>.
704 Many registers also have synonyms:
706 %r26 - %r23 have %arg0 - %arg3 as synonyms
707 %r28 - %r29 have %ret0 - %ret1 as synonyms
708 %r30 has %sp as a synonym
709 %r27 has %dp as a synonym
710 %r2 has %rp as a synonym
712 Almost every control register has a synonym; they are not listed
715 The table is sorted. Suitable for searching by a binary search. */
717 static const struct pd_reg pre_defined_registers[] =
917 /* This table is sorted by order of the length of the string. This is
918 so we check for <> before we check for <. If we had a <> and checked
919 for < first, we would get a false match. */
920 static const struct fp_cond_map fp_cond_map[] =
956 static const struct selector_entry selector_table[] =
975 /* default space and subspace dictionaries */
977 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
978 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
980 /* pre-defined subsegments (subspaces) for the HPPA. */
981 #define SUBSEG_CODE 0
982 #define SUBSEG_DATA 0
985 #define SUBSEG_UNWIND 3
986 #define SUBSEG_GDB_STRINGS 0
987 #define SUBSEG_GDB_SYMBOLS 1
989 static struct default_subspace_dict pa_def_subspaces[] =
991 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE},
992 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA},
993 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT},
994 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS},
996 {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND},
998 {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1001 static struct default_space_dict pa_def_spaces[] =
1003 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL, ".text"},
1004 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL, ".data"},
1005 {NULL, 0, 0, 0, 0, 0, ASEC_NULL, NULL}
1008 /* Misc local definitions used by the assembler. */
1010 /* Return nonzero if the string pointed to by S potentially represents
1011 a right or left half of a FP register */
1012 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1013 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1015 /* These macros are used to maintain spaces/subspaces. */
1016 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1017 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1018 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1019 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1021 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1022 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1024 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1025 main loop after insertion. */
1027 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1029 ((OPCODE) |= (FIELD) << (START)); \
1033 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1034 IGNORE is used to suppress the error message. */
1036 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1038 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1041 as_bad ("Field out of range [%d..%d] (%d).", (LOW), (HIGH), \
1047 #define is_DP_relative(exp) \
1048 ((exp).X_op == O_subtract \
1049 && strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
1051 #define is_PC_relative(exp) \
1052 ((exp).X_op == O_subtract \
1053 && strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
1055 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1056 always be able to reduce the expression to a constant, so we don't
1057 need real complex handling yet. */
1058 #define is_complex(exp) \
1059 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1061 /* Actual functions to implement the PA specific code for the assembler. */
1063 /* Returns a pointer to the label_symbol_struct for the current space.
1064 or NULL if no label_symbol_struct exists for the current space. */
1066 static label_symbol_struct *
1069 label_symbol_struct *label_chain;
1070 sd_chain_struct *space_chain = current_space;
1072 for (label_chain = label_symbols_rootp;
1074 label_chain = label_chain->lss_next)
1075 if (space_chain == label_chain->lss_space && label_chain->lss_label)
1081 /* Defines a label for the current space. If one is already defined,
1082 this function will replace it with the new label. */
1085 pa_define_label (symbol)
1088 label_symbol_struct *label_chain = pa_get_label ();
1089 sd_chain_struct *space_chain = current_space;
1092 label_chain->lss_label = symbol;
1095 /* Create a new label entry and add it to the head of the chain. */
1097 = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct));
1098 label_chain->lss_label = symbol;
1099 label_chain->lss_space = space_chain;
1100 label_chain->lss_next = NULL;
1102 if (label_symbols_rootp)
1103 label_chain->lss_next = label_symbols_rootp;
1105 label_symbols_rootp = label_chain;
1109 /* Removes a label definition for the current space.
1110 If there is no label_symbol_struct entry, then no action is taken. */
1113 pa_undefine_label ()
1115 label_symbol_struct *label_chain;
1116 label_symbol_struct *prev_label_chain = NULL;
1117 sd_chain_struct *space_chain = current_space;
1119 for (label_chain = label_symbols_rootp;
1121 label_chain = label_chain->lss_next)
1123 if (space_chain == label_chain->lss_space && label_chain->lss_label)
1125 /* Remove the label from the chain and free its memory. */
1126 if (prev_label_chain)
1127 prev_label_chain->lss_next = label_chain->lss_next;
1129 label_symbols_rootp = label_chain->lss_next;
1134 prev_label_chain = label_chain;
1139 /* An HPPA-specific version of fix_new. This is required because the HPPA
1140 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1141 results in the creation of an instance of an hppa_fix_struct. An
1142 hppa_fix_struct stores the extra information along with a pointer to the
1143 original fixS. This is attached to the original fixup via the
1144 tc_fix_data field. */
1147 fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel,
1148 r_type, r_field, r_format, arg_reloc, unwind_desc)
1152 symbolS *add_symbol;
1156 bfd_reloc_code_real_type r_type;
1157 enum hppa_reloc_field_selector_type r_field;
1164 struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *)
1165 obstack_alloc (¬es, sizeof (struct hppa_fix_struct));
1168 new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type);
1170 new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type);
1171 new_fix->tc_fix_data = (void *) hppa_fix;
1172 hppa_fix->fx_r_type = r_type;
1173 hppa_fix->fx_r_field = r_field;
1174 hppa_fix->fx_r_format = r_format;
1175 hppa_fix->fx_arg_reloc = arg_reloc;
1176 hppa_fix->segment = now_seg;
1179 bcopy (unwind_desc, hppa_fix->fx_unwind, 8);
1181 /* If necessary call BFD backend function to attach the
1182 unwind bits to the target dependent parts of a BFD symbol.
1184 #ifdef obj_attach_unwind_info
1185 obj_attach_unwind_info (add_symbol->bsym, unwind_desc);
1189 /* foo-$global$ is used to access non-automatic storage. $global$
1190 is really just a marker and has served its purpose, so eliminate
1191 it now so as not to confuse write.c. */
1192 if (new_fix->fx_subsy
1193 && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$"))
1194 new_fix->fx_subsy = NULL;
1197 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1198 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1201 parse_cons_expression_hppa (exp)
1204 hppa_field_selector = pa_chk_field_selector (&input_line_pointer);
1208 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1209 hppa_field_selector is set by the parse_cons_expression_hppa. */
1212 cons_fix_new_hppa (frag, where, size, exp)
1218 unsigned int rel_type;
1220 /* Get a base relocation type. */
1221 if (is_DP_relative (*exp))
1222 rel_type = R_HPPA_GOTOFF;
1223 else if (is_complex (*exp))
1224 rel_type = R_HPPA_COMPLEX;
1228 if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel)
1229 as_warn ("Invalid field selector. Assuming F%%.");
1231 fix_new_hppa (frag, where, size,
1232 (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type,
1233 hppa_field_selector, 32, 0, (char *) 0);
1235 /* Reset field selector to its default state. */
1236 hppa_field_selector = 0;
1239 /* This function is called once, at assembler startup time. It should
1240 set up all the tables, etc. that the MD part of the assembler will need. */
1245 const char *retval = NULL;
1249 last_call_info = NULL;
1250 call_info_root = NULL;
1252 /* Folding of text and data segments fails miserably on the PA.
1253 Warn user and disable "-R" option. */
1254 if (flag_readonly_data_in_text)
1256 as_warn ("-R option not supported on this target.");
1257 flag_readonly_data_in_text = 0;
1262 op_hash = hash_new ();
1264 while (i < NUMOPCODES)
1266 const char *name = pa_opcodes[i].name;
1267 retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]);
1268 if (retval != NULL && *retval != '\0')
1270 as_fatal ("Internal error: can't hash `%s': %s\n", name, retval);
1275 if ((pa_opcodes[i].match & pa_opcodes[i].mask)
1276 != pa_opcodes[i].match)
1278 fprintf (stderr, "internal error: losing opcode: `%s' \"%s\"\n",
1279 pa_opcodes[i].name, pa_opcodes[i].args);
1284 while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name));
1288 as_fatal ("Broken assembler. No assembly attempted.");
1290 /* SOM will change text_section. To make sure we never put
1291 anything into the old one switch to the new one now. */
1292 subseg_set (text_section, 0);
1294 dummy_symbol = symbol_find_or_make ("L$dummy");
1295 S_SET_SEGMENT (dummy_symbol, text_section);
1298 /* Assemble a single instruction storing it into a frag. */
1305 /* The had better be something to assemble. */
1308 /* If we are within a procedure definition, make sure we've
1309 defined a label for the procedure; handle case where the
1310 label was defined after the .PROC directive.
1312 Note there's not need to diddle with the segment or fragment
1313 for the label symbol in this case. We have already switched
1314 into the new $CODE$ subspace at this point. */
1315 if (within_procedure && last_call_info->start_symbol == NULL)
1317 label_symbol_struct *label_symbol = pa_get_label ();
1321 if (label_symbol->lss_label)
1323 last_call_info->start_symbol = label_symbol->lss_label;
1324 label_symbol->lss_label->bsym->flags |= BSF_FUNCTION;
1326 /* Also handle allocation of a fixup to hold the unwind
1327 information when the label appears after the proc/procend. */
1328 if (within_entry_exit)
1330 char *where = frag_more (0);
1332 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
1333 last_call_info->start_symbol, (offsetT) 0, NULL,
1334 0, R_HPPA_ENTRY, e_fsel, 0, 0,
1335 (char *) &last_call_info->ci_unwind.descriptor);
1340 as_bad ("Missing function name for .PROC (corrupted label chain)");
1343 as_bad ("Missing function name for .PROC");
1346 /* Assemble the instruction. Results are saved into "the_insn". */
1349 /* Get somewhere to put the assembled instrution. */
1352 /* Output the opcode. */
1353 md_number_to_chars (to, the_insn.opcode, 4);
1355 /* If necessary output more stuff. */
1356 if (the_insn.reloc != R_HPPA_NONE)
1357 fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL,
1358 (offsetT) 0, &the_insn.exp, the_insn.pcrel,
1359 the_insn.reloc, the_insn.field_selector,
1360 the_insn.format, the_insn.arg_reloc, NULL);
1363 /* Do the real work for assembling a single instruction. Store results
1364 into the global "the_insn" variable. */
1370 char *error_message = "";
1371 char *s, c, *argstart, *name, *save_s;
1375 int cmpltr, nullif, flag, cond, num;
1376 unsigned long opcode;
1377 struct pa_opcode *insn;
1379 /* Skip to something interesting. */
1380 for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s)
1399 as_fatal ("Unknown opcode: `%s'", str);
1404 /* Convert everything into lower case. */
1407 if (isupper (*save_s))
1408 *save_s = tolower (*save_s);
1412 /* Look up the opcode in the has table. */
1413 if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
1415 as_bad ("Unknown opcode: `%s'", str);
1424 /* Mark the location where arguments for the instruction start, then
1425 start processing them. */
1429 /* Do some initialization. */
1430 opcode = insn->match;
1431 bzero (&the_insn, sizeof (the_insn));
1433 the_insn.reloc = R_HPPA_NONE;
1435 /* Build the opcode, checking as we go to make
1436 sure that the operands match. */
1437 for (args = insn->args;; ++args)
1442 /* End of arguments. */
1458 /* These must match exactly. */
1467 /* Handle a 5 bit register or control register field at 10. */
1470 num = pa_parse_number (&s, 0);
1471 CHECK_FIELD (num, 31, 0, 0);
1472 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1474 /* Handle a 5 bit register field at 15. */
1476 num = pa_parse_number (&s, 0);
1477 CHECK_FIELD (num, 31, 0, 0);
1478 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1480 /* Handle a 5 bit register field at 31. */
1483 num = pa_parse_number (&s, 0);
1484 CHECK_FIELD (num, 31, 0, 0);
1485 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1487 /* Handle a 5 bit field length at 31. */
1489 num = pa_get_absolute_expression (&the_insn, &s);
1491 CHECK_FIELD (num, 32, 1, 0);
1492 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1494 /* Handle a 5 bit immediate at 15. */
1496 num = pa_get_absolute_expression (&the_insn, &s);
1498 CHECK_FIELD (num, 15, -16, 0);
1499 low_sign_unext (num, 5, &num);
1500 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1502 /* Handle a 5 bit immediate at 31. */
1504 num = pa_get_absolute_expression (&the_insn, &s);
1506 CHECK_FIELD (num, 15, -16, 0)
1507 low_sign_unext (num, 5, &num);
1508 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1510 /* Handle an unsigned 5 bit immediate at 31. */
1512 num = pa_get_absolute_expression (&the_insn, &s);
1514 CHECK_FIELD (num, 31, 0, 0);
1515 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1517 /* Handle an unsigned 5 bit immediate at 15. */
1519 num = pa_get_absolute_expression (&the_insn, &s);
1521 CHECK_FIELD (num, 31, 0, 0);
1522 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1524 /* Handle a 2 bit space identifier at 17. */
1526 num = pa_parse_number (&s, 0);
1527 CHECK_FIELD (num, 3, 0, 1);
1528 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1530 /* Handle a 3 bit space identifier at 18. */
1532 num = pa_parse_number (&s, 0);
1533 CHECK_FIELD (num, 7, 0, 1);
1534 dis_assemble_3 (num, &num);
1535 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1537 /* Handle a completer for an indexing load or store. */
1543 while (*s == ',' && i < 2)
1546 if (strncasecmp (s, "sm", 2) == 0)
1553 else if (strncasecmp (s, "m", 1) == 0)
1555 else if (strncasecmp (s, "s", 1) == 0)
1558 as_bad ("Invalid Indexed Load Completer.");
1563 as_bad ("Invalid Indexed Load Completer Syntax.");
1565 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1568 /* Handle a short load/store completer. */
1576 if (strncasecmp (s, "ma", 2) == 0)
1581 else if (strncasecmp (s, "mb", 2) == 0)
1587 as_bad ("Invalid Short Load/Store Completer.");
1591 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1594 /* Handle a stbys completer. */
1600 while (*s == ',' && i < 2)
1603 if (strncasecmp (s, "m", 1) == 0)
1605 else if (strncasecmp (s, "b", 1) == 0)
1607 else if (strncasecmp (s, "e", 1) == 0)
1610 as_bad ("Invalid Store Bytes Short Completer");
1615 as_bad ("Invalid Store Bytes Short Completer");
1617 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1620 /* Handle a non-negated compare/stubtract condition. */
1622 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
1625 as_bad ("Invalid Compare/Subtract Condition: %c", *s);
1628 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1630 /* Handle a negated or non-negated compare/subtract condition. */
1633 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
1637 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
1640 as_bad ("Invalid Compare/Subtract Condition.");
1645 /* Negated condition requires an opcode change. */
1649 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1651 /* Handle non-negated add condition. */
1653 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1656 as_bad ("Invalid Compare/Subtract Condition: %c", *s);
1659 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1661 /* Handle a negated or non-negated add condition. */
1664 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1668 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
1671 as_bad ("Invalid Compare/Subtract Condition");
1676 /* Negated condition requires an opcode change. */
1680 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1682 /* Handle a compare/subtract condition. */
1689 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 0);
1694 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 0);
1697 as_bad ("Invalid Compare/Subtract Condition");
1701 opcode |= cmpltr << 13;
1702 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1704 /* Handle a non-negated add condition. */
1713 while (*s != ',' && *s != ' ' && *s != '\t')
1717 if (strcmp (name, "=") == 0)
1719 else if (strcmp (name, "<") == 0)
1721 else if (strcmp (name, "<=") == 0)
1723 else if (strcasecmp (name, "nuv") == 0)
1725 else if (strcasecmp (name, "znv") == 0)
1727 else if (strcasecmp (name, "sv") == 0)
1729 else if (strcasecmp (name, "od") == 0)
1731 else if (strcasecmp (name, "n") == 0)
1733 else if (strcasecmp (name, "tr") == 0)
1738 else if (strcmp (name, "<>") == 0)
1743 else if (strcmp (name, ">=") == 0)
1748 else if (strcmp (name, ">") == 0)
1753 else if (strcasecmp (name, "uv") == 0)
1758 else if (strcasecmp (name, "vnz") == 0)
1763 else if (strcasecmp (name, "nsv") == 0)
1768 else if (strcasecmp (name, "ev") == 0)
1774 as_bad ("Invalid Add Condition: %s", name);
1777 nullif = pa_parse_nullif (&s);
1778 opcode |= nullif << 1;
1779 opcode |= cmpltr << 13;
1780 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1782 /* HANDLE a logical instruction condition. */
1790 while (*s != ',' && *s != ' ' && *s != '\t')
1794 if (strcmp (name, "=") == 0)
1796 else if (strcmp (name, "<") == 0)
1798 else if (strcmp (name, "<=") == 0)
1800 else if (strcasecmp (name, "od") == 0)
1802 else if (strcasecmp (name, "tr") == 0)
1807 else if (strcmp (name, "<>") == 0)
1812 else if (strcmp (name, ">=") == 0)
1817 else if (strcmp (name, ">") == 0)
1822 else if (strcasecmp (name, "ev") == 0)
1828 as_bad ("Invalid Logical Instruction Condition.");
1831 opcode |= cmpltr << 13;
1832 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1834 /* Handle a unit instruction condition. */
1841 if (strncasecmp (s, "sbz", 3) == 0)
1846 else if (strncasecmp (s, "shz", 3) == 0)
1851 else if (strncasecmp (s, "sdc", 3) == 0)
1856 else if (strncasecmp (s, "sbc", 3) == 0)
1861 else if (strncasecmp (s, "shc", 3) == 0)
1866 else if (strncasecmp (s, "tr", 2) == 0)
1872 else if (strncasecmp (s, "nbz", 3) == 0)
1878 else if (strncasecmp (s, "nhz", 3) == 0)
1884 else if (strncasecmp (s, "ndc", 3) == 0)
1890 else if (strncasecmp (s, "nbc", 3) == 0)
1896 else if (strncasecmp (s, "nhc", 3) == 0)
1903 as_bad ("Invalid Logical Instruction Condition.");
1905 opcode |= cmpltr << 13;
1906 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1908 /* Handle a shift/extract/deposit condition. */
1916 while (*s != ',' && *s != ' ' && *s != '\t')
1920 if (strcmp (name, "=") == 0)
1922 else if (strcmp (name, "<") == 0)
1924 else if (strcasecmp (name, "od") == 0)
1926 else if (strcasecmp (name, "tr") == 0)
1928 else if (strcmp (name, "<>") == 0)
1930 else if (strcmp (name, ">=") == 0)
1932 else if (strcasecmp (name, "ev") == 0)
1934 /* Handle movb,n. Put things back the way they were.
1935 This includes moving s back to where it started. */
1936 else if (strcasecmp (name, "n") == 0 && *args == '|')
1943 as_bad ("Invalid Shift/Extract/Deposit Condition.");
1946 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1948 /* Handle bvb and bb conditions. */
1954 if (strncmp (s, "<", 1) == 0)
1959 else if (strncmp (s, ">=", 2) == 0)
1965 as_bad ("Invalid Bit Branch Condition: %c", *s);
1967 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1969 /* Handle a system control completer. */
1971 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
1979 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
1981 /* Handle a nullification completer for branch instructions. */
1983 nullif = pa_parse_nullif (&s);
1984 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
1986 /* Handle a nullification completer for copr and spop insns. */
1988 nullif = pa_parse_nullif (&s);
1989 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
1991 /* Handle a 11 bit immediate at 31. */
1993 the_insn.field_selector = pa_chk_field_selector (&s);
1996 if (the_insn.exp.X_op == O_constant)
1998 num = evaluate_absolute (&the_insn);
1999 CHECK_FIELD (num, 1023, -1024, 0);
2000 low_sign_unext (num, 11, &num);
2001 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2005 if (is_DP_relative (the_insn.exp))
2006 the_insn.reloc = R_HPPA_GOTOFF;
2007 else if (is_PC_relative (the_insn.exp))
2008 the_insn.reloc = R_HPPA_PCREL_CALL;
2010 the_insn.reloc = R_HPPA;
2011 the_insn.format = 11;
2015 /* Handle a 14 bit immediate at 31. */
2017 the_insn.field_selector = pa_chk_field_selector (&s);
2020 if (the_insn.exp.X_op == O_constant)
2022 num = evaluate_absolute (&the_insn);
2023 CHECK_FIELD (num, 8191, -8192, 0);
2024 low_sign_unext (num, 14, &num);
2025 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2029 if (is_DP_relative (the_insn.exp))
2030 the_insn.reloc = R_HPPA_GOTOFF;
2031 else if (is_PC_relative (the_insn.exp))
2032 the_insn.reloc = R_HPPA_PCREL_CALL;
2034 the_insn.reloc = R_HPPA;
2035 the_insn.format = 14;
2039 /* Handle a 21 bit immediate at 31. */
2041 the_insn.field_selector = pa_chk_field_selector (&s);
2044 if (the_insn.exp.X_op == O_constant)
2046 num = evaluate_absolute (&the_insn);
2047 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2048 dis_assemble_21 (num, &num);
2049 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2053 if (is_DP_relative (the_insn.exp))
2054 the_insn.reloc = R_HPPA_GOTOFF;
2055 else if (is_PC_relative (the_insn.exp))
2056 the_insn.reloc = R_HPPA_PCREL_CALL;
2058 the_insn.reloc = R_HPPA;
2059 the_insn.format = 21;
2063 /* Handle a 12 bit branch displacement. */
2065 the_insn.field_selector = pa_chk_field_selector (&s);
2069 if (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2071 unsigned int w1, w, result;
2073 num = evaluate_absolute (&the_insn);
2076 as_bad ("Branch to unaligned address");
2079 CHECK_FIELD (num, 8191, -8192, 0);
2080 sign_unext ((num - 8) >> 2, 12, &result);
2081 dis_assemble_12 (result, &w1, &w);
2082 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2086 the_insn.reloc = R_HPPA_PCREL_CALL;
2087 the_insn.format = 12;
2088 the_insn.arg_reloc = last_call_desc.arg_reloc;
2089 bzero (&last_call_desc, sizeof (struct call_desc));
2094 /* Handle a 17 bit branch displacement. */
2096 the_insn.field_selector = pa_chk_field_selector (&s);
2100 if (!the_insn.exp.X_add_symbol
2101 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2104 unsigned int w2, w1, w, result;
2106 num = evaluate_absolute (&the_insn);
2109 as_bad ("Branch to unaligned address");
2112 CHECK_FIELD (num, 262143, -262144, 0);
2114 if (the_insn.exp.X_add_symbol)
2117 sign_unext (num >> 2, 17, &result);
2118 dis_assemble_17 (result, &w1, &w2, &w);
2119 INSERT_FIELD_AND_CONTINUE (opcode,
2120 ((w2 << 2) | (w1 << 16) | w), 0);
2124 the_insn.reloc = R_HPPA_PCREL_CALL;
2125 the_insn.format = 17;
2126 the_insn.arg_reloc = last_call_desc.arg_reloc;
2127 bzero (&last_call_desc, sizeof (struct call_desc));
2131 /* Handle an absolute 17 bit branch target. */
2133 the_insn.field_selector = pa_chk_field_selector (&s);
2137 if (!the_insn.exp.X_add_symbol
2138 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2141 unsigned int w2, w1, w, result;
2143 num = evaluate_absolute (&the_insn);
2146 as_bad ("Branch to unaligned address");
2149 CHECK_FIELD (num, 262143, -262144, 0);
2151 if (the_insn.exp.X_add_symbol)
2154 sign_unext (num >> 2, 17, &result);
2155 dis_assemble_17 (result, &w1, &w2, &w);
2156 INSERT_FIELD_AND_CONTINUE (opcode,
2157 ((w2 << 2) | (w1 << 16) | w), 0);
2161 the_insn.reloc = R_HPPA_ABS_CALL;
2162 the_insn.format = 17;
2166 /* Handle a 5 bit shift count at 26. */
2168 num = pa_get_absolute_expression (&the_insn, &s);
2170 CHECK_FIELD (num, 31, 0, 0);
2171 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2173 /* Handle a 5 bit bit position at 26. */
2175 num = pa_get_absolute_expression (&the_insn, &s);
2177 CHECK_FIELD (num, 31, 0, 0);
2178 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2180 /* Handle a 5 bit immediate at 10. */
2182 num = pa_get_absolute_expression (&the_insn, &s);
2184 CHECK_FIELD (num, 31, 0, 0);
2185 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2187 /* Handle a 13 bit immediate at 18. */
2189 num = pa_get_absolute_expression (&the_insn, &s);
2191 CHECK_FIELD (num, 8191, 0, 0);
2192 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2194 /* Handle a 26 bit immediate at 31. */
2196 num = pa_get_absolute_expression (&the_insn, &s);
2198 CHECK_FIELD (num, 671108864, 0, 0);
2199 INSERT_FIELD_AND_CONTINUE (opcode, num, 1);
2201 /* Handle a 3 bit SFU identifier at 25. */
2204 as_bad ("Invalid SFU identifier");
2205 num = pa_get_absolute_expression (&the_insn, &s);
2207 CHECK_FIELD (num, 7, 0, 0);
2208 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2210 /* Handle a 20 bit SOP field for spop0. */
2212 num = pa_get_absolute_expression (&the_insn, &s);
2214 CHECK_FIELD (num, 1048575, 0, 0);
2215 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
2216 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2218 /* Handle a 15bit SOP field for spop1. */
2220 num = pa_get_absolute_expression (&the_insn, &s);
2222 CHECK_FIELD (num, 32767, 0, 0);
2223 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
2225 /* Handle a 10bit SOP field for spop3. */
2227 num = pa_get_absolute_expression (&the_insn, &s);
2229 CHECK_FIELD (num, 1023, 0, 0);
2230 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
2231 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2233 /* Handle a 15 bit SOP field for spop2. */
2235 num = pa_get_absolute_expression (&the_insn, &s);
2237 CHECK_FIELD (num, 32767, 0, 0);
2238 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
2239 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2241 /* Handle a 3-bit co-processor ID field. */
2244 as_bad ("Invalid COPR identifier");
2245 num = pa_get_absolute_expression (&the_insn, &s);
2247 CHECK_FIELD (num, 7, 0, 0);
2248 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2250 /* Handle a 22bit SOP field for copr. */
2252 num = pa_get_absolute_expression (&the_insn, &s);
2254 CHECK_FIELD (num, 4194303, 0, 0);
2255 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
2256 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2258 /* Handle a source FP operand format completer. */
2260 flag = pa_parse_fp_format (&s);
2261 the_insn.fpof1 = flag;
2262 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2264 /* Handle a destination FP operand format completer. */
2266 /* pa_parse_format needs the ',' prefix. */
2268 flag = pa_parse_fp_format (&s);
2269 the_insn.fpof2 = flag;
2270 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
2272 /* Handle FP compare conditions. */
2274 cond = pa_parse_fp_cmp_cond (&s);
2275 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
2277 /* Handle L/R register halves like 't'. */
2280 struct pa_89_fp_reg_struct result;
2282 pa_parse_number (&s, &result);
2283 CHECK_FIELD (result.number_part, 31, 0, 0);
2284 opcode |= result.number_part;
2286 /* 0x30 opcodes are FP arithmetic operation opcodes
2287 and need to be turned into 0x38 opcodes. This
2288 is not necessary for loads/stores. */
2289 if (need_89_opcode (&the_insn, &result)
2290 && ((opcode & 0xfc000000) == 0x30000000))
2293 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
2296 /* Handle L/R register halves like 'b'. */
2299 struct pa_89_fp_reg_struct result;
2301 pa_parse_number (&s, &result);
2302 CHECK_FIELD (result.number_part, 31, 0, 0);
2303 opcode |= result.number_part << 21;
2304 if (need_89_opcode (&the_insn, &result))
2306 opcode |= (result.l_r_select & 1) << 7;
2312 /* Handle L/R register halves like 'x'. */
2315 struct pa_89_fp_reg_struct result;
2317 pa_parse_number (&s, &result);
2318 CHECK_FIELD (result.number_part, 31, 0, 0);
2319 opcode |= (result.number_part & 0x1f) << 16;
2320 if (need_89_opcode (&the_insn, &result))
2322 opcode |= (result.l_r_select & 1) << 12;
2328 /* Handle a 5 bit register field at 10. */
2331 struct pa_89_fp_reg_struct result;
2333 pa_parse_number (&s, &result);
2334 CHECK_FIELD (result.number_part, 31, 0, 0);
2335 if (the_insn.fpof1 == SGL)
2337 result.number_part &= 0xF;
2338 result.number_part |= (result.l_r_select & 1) << 4;
2340 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
2343 /* Handle a 5 bit register field at 15. */
2346 struct pa_89_fp_reg_struct result;
2348 pa_parse_number (&s, &result);
2349 CHECK_FIELD (result.number_part, 31, 0, 0);
2350 if (the_insn.fpof1 == SGL)
2352 result.number_part &= 0xF;
2353 result.number_part |= (result.l_r_select & 1) << 4;
2355 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
2358 /* Handle a 5 bit register field at 31. */
2361 struct pa_89_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 result.number_part &= 0xF;
2368 result.number_part |= (result.l_r_select & 1) << 4;
2370 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
2373 /* Handle a 5 bit register field at 20. */
2376 struct pa_89_fp_reg_struct result;
2378 pa_parse_number (&s, &result);
2379 CHECK_FIELD (result.number_part, 31, 0, 0);
2380 if (the_insn.fpof1 == SGL)
2382 result.number_part &= 0xF;
2383 result.number_part |= (result.l_r_select & 1) << 4;
2385 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
2388 /* Handle a 5 bit register field at 25. */
2391 struct pa_89_fp_reg_struct result;
2393 pa_parse_number (&s, &result);
2394 CHECK_FIELD (result.number_part, 31, 0, 0);
2395 if (the_insn.fpof1 == SGL)
2397 result.number_part &= 0xF;
2398 result.number_part |= (result.l_r_select & 1) << 4;
2400 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
2403 /* Handle a floating point operand format at 26.
2404 Only allows single and double precision. */
2406 flag = pa_parse_fp_format (&s);
2412 the_insn.fpof1 = flag;
2418 as_bad ("Invalid Floating Point Operand Format.");
2428 /* Check if the args matched. */
2431 if (&insn[1] - pa_opcodes < NUMOPCODES
2432 && !strcmp (insn->name, insn[1].name))
2440 as_bad ("Invalid operands %s", error_message);
2447 the_insn.opcode = opcode;
2450 /* Turn a string in input_line_pointer into a floating point constant of type
2451 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2452 emitted is stored in *sizeP . An error message or NULL is returned. */
2454 #define MAX_LITTLENUMS 6
2457 md_atof (type, litP, sizeP)
2463 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2464 LITTLENUM_TYPE *wordP;
2496 return "Bad call to MD_ATOF()";
2498 t = atof_ieee (input_line_pointer, type, words);
2500 input_line_pointer = t;
2501 *sizeP = prec * sizeof (LITTLENUM_TYPE);
2502 for (wordP = words; prec--;)
2504 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
2505 litP += sizeof (LITTLENUM_TYPE);
2510 /* Write out big-endian. */
2513 md_number_to_chars (buf, val, n)
2518 number_to_chars_bigendian (buf, val, n);
2521 /* Translate internal representation of relocation info to BFD target
2525 tc_gen_reloc (section, fixp)
2530 struct hppa_fix_struct *hppa_fixp;
2531 bfd_reloc_code_real_type code;
2532 static arelent *no_relocs = NULL;
2534 bfd_reloc_code_real_type **codes;
2538 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
2539 if (fixp->fx_addsy == 0)
2541 assert (hppa_fixp != 0);
2542 assert (section != 0);
2544 reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent));
2545 assert (reloc != 0);
2547 reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
2548 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
2550 hppa_fixp->fx_r_format,
2551 hppa_fixp->fx_r_field);
2553 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
2556 relocs = (arelent **)
2557 bfd_alloc_by_size_t (stdoutput, sizeof (arelent *) * n_relocs + 1);
2558 assert (relocs != 0);
2560 reloc = (arelent *) bfd_alloc_by_size_t (stdoutput,
2561 sizeof (arelent) * n_relocs);
2563 assert (reloc != 0);
2565 for (i = 0; i < n_relocs; i++)
2566 relocs[i] = &reloc[i];
2568 relocs[n_relocs] = NULL;
2571 switch (fixp->fx_r_type)
2574 assert (n_relocs == 1);
2578 reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
2579 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
2580 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2581 reloc->addend = 0; /* default */
2583 assert (reloc->howto && code == reloc->howto->type);
2585 /* Now, do any processing that is dependent on the relocation type. */
2588 case R_PARISC_DLTREL21L:
2589 case R_PARISC_DLTREL14R:
2590 case R_PARISC_DLTREL14F:
2591 case R_PARISC_PLABEL32:
2592 case R_PARISC_PLABEL21L:
2593 case R_PARISC_PLABEL14R:
2594 /* For plabel relocations, the addend of the
2595 relocation should be either 0 (no static link) or 2
2596 (static link required).
2598 FIXME: We always assume no static link!
2600 We also slam a zero addend into the DLT relative relocs;
2601 it doesn't make a lot of sense to use any addend since
2602 it gets you a different (eg unknown) DLT entry. */
2606 case R_PARISC_PCREL21L:
2607 case R_PARISC_PCREL17R:
2608 case R_PARISC_PCREL17F:
2609 case R_PARISC_PCREL17C:
2610 case R_PARISC_PCREL14R:
2611 case R_PARISC_PCREL14F:
2612 /* The constant is stored in the instruction. */
2613 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
2616 if (fixp->fx_addsy && fixp->fx_addsy->bsym->flags & BSF_FUNCTION)
2619 reloc->addend = fixp->fx_addnumber;
2626 /* Walk over reach relocation returned by the BFD backend. */
2627 for (i = 0; i < n_relocs; i++)
2631 relocs[i]->sym_ptr_ptr = &fixp->fx_addsy->bsym;
2632 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
2633 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
2639 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
2645 /* For plabel relocations, the addend of the
2646 relocation should be either 0 (no static link) or 2
2647 (static link required).
2649 FIXME: We always assume no static link!
2651 We also slam a zero addend into the DLT relative relocs;
2652 it doesn't make a lot of sense to use any addend since
2653 it gets you a different (eg unknown) DLT entry. */
2654 relocs[i]->addend = 0;
2665 /* There is no symbol or addend associated with these fixups. */
2666 relocs[i]->sym_ptr_ptr = &dummy_symbol->bsym;
2667 relocs[i]->addend = 0;
2671 if (fixp->fx_addsy && fixp->fx_addsy->bsym->flags & BSF_FUNCTION)
2672 relocs[i]->addend = 0;
2674 relocs[i]->addend = fixp->fx_addnumber;
2683 /* Process any machine dependent frag types. */
2686 md_convert_frag (abfd, sec, fragP)
2688 register asection *sec;
2689 register fragS *fragP;
2691 unsigned int address;
2693 if (fragP->fr_type == rs_machine_dependent)
2695 switch ((int) fragP->fr_subtype)
2698 fragP->fr_type = rs_fill;
2699 know (fragP->fr_var == 1);
2700 know (fragP->fr_next);
2701 address = fragP->fr_address + fragP->fr_fix;
2702 if (address % fragP->fr_offset)
2705 fragP->fr_next->fr_address
2710 fragP->fr_offset = 0;
2716 /* Round up a section size to the appropriate boundary. */
2719 md_section_align (segment, size)
2723 int align = bfd_get_section_alignment (stdoutput, segment);
2724 int align2 = (1 << align) - 1;
2726 return (size + align2) & ~align2;
2729 /* Create a short jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2731 md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
2733 addressT from_addr, to_addr;
2737 fprintf (stderr, "pa_create_short_jmp\n");
2741 /* Create a long jump from FROM_ADDR to TO_ADDR. Not used on the PA. */
2743 md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
2745 addressT from_addr, to_addr;
2749 fprintf (stderr, "pa_create_long_jump\n");
2753 /* Return the approximate size of a frag before relaxation has occurred. */
2755 md_estimate_size_before_relax (fragP, segment)
2756 register fragS *fragP;
2763 while ((fragP->fr_fix + size) % fragP->fr_offset)
2769 CONST char *md_shortopts = "";
2770 struct option md_longopts[] = {
2771 {NULL, no_argument, NULL, 0}
2773 size_t md_longopts_size = sizeof(md_longopts);
2776 md_parse_option (c, arg)
2784 md_show_usage (stream)
2789 /* We have no need to default values of symbols. */
2792 md_undefined_symbol (name)
2798 /* Parse an operand that is machine-specific.
2799 We just return without modifying the expression as we have nothing
2803 md_operand (expressionP)
2804 expressionS *expressionP;
2808 /* Apply a fixup to an instruction. */
2811 md_apply_fix (fixP, valp)
2815 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
2816 struct hppa_fix_struct *hppa_fixP;
2817 long new_val, result;
2818 unsigned int w1, w2, w;
2821 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
2822 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
2823 never be "applied" (they are just markers). */
2825 if (fixP->fx_r_type == R_HPPA_ENTRY
2826 || fixP->fx_r_type == R_HPPA_EXIT)
2830 /* There should have been an HPPA specific fixup associated
2831 with the GAS fixup. */
2834 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
2835 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
2837 if (fixP->fx_r_type == R_HPPA_NONE)
2840 /* Remember this value for emit_reloc. FIXME, is this braindamage
2841 documented anywhere!?! */
2842 fixP->fx_addnumber = val;
2844 /* Check if this is an undefined symbol. No relocation can
2845 possibly be performed in this case.
2847 Also avoid doing anything for pc-relative fixups in which the
2848 fixup is in a different space than the symbol it references. */
2849 if ((fixP->fx_addsy && fixP->fx_addsy->bsym->section == &bfd_und_section)
2851 && fixP->fx_subsy->bsym->section == &bfd_und_section)
2854 && S_GET_SEGMENT (fixP->fx_addsy) != hppa_fixP->segment)
2857 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
2860 /* PLABEL field selectors should not be passed to hppa_field_adjust. */
2861 if (fmt != 0 && hppa_fixP->fx_r_field != R_HPPA_PSEL
2862 && hppa_fixP->fx_r_field != R_HPPA_LPSEL
2863 && hppa_fixP->fx_r_field != R_HPPA_RPSEL
2864 && hppa_fixP->fx_r_field != R_HPPA_TSEL
2865 && hppa_fixP->fx_r_field != R_HPPA_LTSEL
2866 && hppa_fixP->fx_r_field != R_HPPA_RTSEL
2867 && !(fixP->fx_addsy && fixP->fx_addsy->bsym->flags & BSF_FUNCTION))
2868 new_val = hppa_field_adjust (val, 0, hppa_fixP->fx_r_field);
2874 /* Handle all opcodes with the 'j' operand type. */
2876 CHECK_FIELD (new_val, 8191, -8192, 0);
2878 /* Mask off 14 bits to be changed. */
2879 bfd_put_32 (stdoutput,
2880 bfd_get_32 (stdoutput, buf) & 0xffffc000,
2882 low_sign_unext (new_val, 14, &result);
2885 /* Handle all opcodes with the 'k' operand type. */
2887 CHECK_FIELD (new_val, 2097152, 0, 0);
2889 /* Mask off 21 bits to be changed. */
2890 bfd_put_32 (stdoutput,
2891 bfd_get_32 (stdoutput, buf) & 0xffe00000,
2893 dis_assemble_21 (new_val, &result);
2896 /* Handle all the opcodes with the 'i' operand type. */
2898 CHECK_FIELD (new_val, 1023, -1023, 0);
2900 /* Mask off 11 bits to be changed. */
2901 bfd_put_32 (stdoutput,
2902 bfd_get_32 (stdoutput, buf) & 0xffff800,
2904 low_sign_unext (new_val, 11, &result);
2907 /* Handle all the opcodes with the 'w' operand type. */
2909 CHECK_FIELD (new_val, 8191, -8192, 0)
2911 /* Mask off 11 bits to be changed. */
2912 sign_unext ((new_val - 8) >> 2, 12, &result);
2913 bfd_put_32 (stdoutput,
2914 bfd_get_32 (stdoutput, buf) & 0xffffe002,
2917 dis_assemble_12 (result, &w1, &w);
2918 result = ((w1 << 2) | w);
2921 /* Handle some of the opcodes with the 'W' operand type. */
2924 #define stub_needed(CALLER, CALLEE) \
2925 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
2926 /* It is necessary to force PC-relative calls/jumps to have a
2927 relocation entry if they're going to need either a argument
2928 relocation or long call stub. FIXME. Can't we need the same
2929 for absolute calls? */
2931 && (stub_needed (((obj_symbol_type *)
2932 fixP->fx_addsy->bsym)->tc_data.hppa_arg_reloc,
2933 hppa_fixP->fx_arg_reloc)))
2937 CHECK_FIELD (new_val, 262143, -262144, 0);
2939 /* Mask off 17 bits to be changed. */
2940 bfd_put_32 (stdoutput,
2941 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
2943 sign_unext ((new_val - 8) >> 2, 17, &result);
2944 dis_assemble_17 (result, &w1, &w2, &w);
2945 result = ((w2 << 2) | (w1 << 16) | w);
2950 fixP->fx_addnumber = fixP->fx_offset;
2951 /* If we have a real relocation, then we want zero to
2952 be stored in the object file. If no relocation is going
2953 to be emitted, then we need to store new_val into the
2956 bfd_put_32 (stdoutput, 0, buf);
2958 bfd_put_32 (stdoutput, new_val, buf);
2966 as_bad ("Unknown relocation encountered in md_apply_fix.");
2970 /* Insert the relocation. */
2971 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
2976 printf ("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n",
2977 (unsigned int) fixP, fixP->fx_r_type);
2982 /* Exactly what point is a PC-relative offset relative TO?
2983 On the PA, they're relative to the address of the offset. */
2986 md_pcrel_from (fixP)
2989 return fixP->fx_where + fixP->fx_frag->fr_address;
2992 /* Return nonzero if the input line pointer is at the end of
2996 is_end_of_statement ()
2998 return ((*input_line_pointer == '\n')
2999 || (*input_line_pointer == ';')
3000 || (*input_line_pointer == '!'));
3003 /* Read a number from S. The number might come in one of many forms,
3004 the most common will be a hex or decimal constant, but it could be
3005 a pre-defined register (Yuk!), or an absolute symbol.
3007 Return a number or -1 for failure.
3009 When parsing PA-89 FP register numbers RESULT will be
3010 the address of a structure to return information about
3011 L/R half of FP registers, store results there as appropriate.
3013 pa_parse_number can not handle negative constants and will fail
3014 horribly if it is passed such a constant. */
3017 pa_parse_number (s, result)
3019 struct pa_89_fp_reg_struct *result;
3028 /* Skip whitespace before the number. */
3029 while (*p == ' ' || *p == '\t')
3032 /* Store info in RESULT if requested by caller. */
3035 result->number_part = -1;
3036 result->l_r_select = -1;
3042 /* Looks like a number. */
3045 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3047 /* The number is specified in hex. */
3049 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3050 || ((*p >= 'A') && (*p <= 'F')))
3053 num = num * 16 + *p - '0';
3054 else if (*p >= 'a' && *p <= 'f')
3055 num = num * 16 + *p - 'a' + 10;
3057 num = num * 16 + *p - 'A' + 10;
3063 /* The number is specified in decimal. */
3064 while (isdigit (*p))
3066 num = num * 10 + *p - '0';
3071 /* Store info in RESULT if requested by the caller. */
3074 result->number_part = num;
3076 if (IS_R_SELECT (p))
3078 result->l_r_select = 1;
3081 else if (IS_L_SELECT (p))
3083 result->l_r_select = 0;
3087 result->l_r_select = 0;
3092 /* The number might be a predefined register. */
3097 /* Tege hack: Special case for general registers as the general
3098 code makes a binary search with case translation, and is VERY
3103 if (*p == 'e' && *(p + 1) == 't'
3104 && (*(p + 2) == '0' || *(p + 2) == '1'))
3107 num = *p - '0' + 28;
3115 else if (!isdigit (*p))
3118 as_bad ("Undefined register: '%s'.", name);
3124 num = num * 10 + *p++ - '0';
3125 while (isdigit (*p));
3130 /* Do a normal register search. */
3131 while (is_part_of_name (c))
3137 status = reg_name_search (name);
3143 as_bad ("Undefined register: '%s'.", name);
3149 /* Store info in RESULT if requested by caller. */
3152 result->number_part = num;
3153 if (IS_R_SELECT (p - 1))
3154 result->l_r_select = 1;
3155 else if (IS_L_SELECT (p - 1))
3156 result->l_r_select = 0;
3158 result->l_r_select = 0;
3163 /* And finally, it could be a symbol in the absolute section which
3164 is effectively a constant. */
3168 while (is_part_of_name (c))
3174 if ((sym = symbol_find (name)) != NULL)
3176 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
3177 num = S_GET_VALUE (sym);
3181 as_bad ("Non-absolute symbol: '%s'.", name);
3187 /* There is where we'd come for an undefined symbol
3188 or for an empty string. For an empty string we
3189 will return zero. That's a concession made for
3190 compatability with the braindamaged HP assemblers. */
3196 as_bad ("Undefined absolute constant: '%s'.", name);
3202 /* Store info in RESULT if requested by caller. */
3205 result->number_part = num;
3206 if (IS_R_SELECT (p - 1))
3207 result->l_r_select = 1;
3208 else if (IS_L_SELECT (p - 1))
3209 result->l_r_select = 0;
3211 result->l_r_select = 0;
3219 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3221 /* Given NAME, find the register number associated with that name, return
3222 the integer value associated with the given name or -1 on failure. */
3225 reg_name_search (name)
3228 int middle, low, high;
3232 high = REG_NAME_CNT - 1;
3236 middle = (low + high) / 2;
3237 cmp = strcasecmp (name, pre_defined_registers[middle].name);
3243 return pre_defined_registers[middle].value;
3245 while (low <= high);
3251 /* Return nonzero if the given INSN and L/R information will require
3252 a new PA-89 opcode. */
3255 need_89_opcode (insn, result)
3257 struct pa_89_fp_reg_struct *result;
3259 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
3265 /* Parse a condition for a fcmp instruction. Return the numerical
3266 code associated with the condition. */
3269 pa_parse_fp_cmp_cond (s)
3276 for (i = 0; i < 32; i++)
3278 if (strncasecmp (*s, fp_cond_map[i].string,
3279 strlen (fp_cond_map[i].string)) == 0)
3281 cond = fp_cond_map[i].cond;
3282 *s += strlen (fp_cond_map[i].string);
3283 /* If not a complete match, back up the input string and
3285 if (**s != ' ' && **s != '\t')
3287 *s -= strlen (fp_cond_map[i].string);
3290 while (**s == ' ' || **s == '\t')
3296 as_bad ("Invalid FP Compare Condition: %s", *s);
3298 /* Advance over the bogus completer. */
3299 while (**s != ',' && **s != ' ' && **s != '\t')
3305 /* Parse an FP operand format completer returning the completer
3308 static fp_operand_format
3309 pa_parse_fp_format (s)
3318 if (strncasecmp (*s, "sgl", 3) == 0)
3323 else if (strncasecmp (*s, "dbl", 3) == 0)
3328 else if (strncasecmp (*s, "quad", 4) == 0)
3335 format = ILLEGAL_FMT;
3336 as_bad ("Invalid FP Operand Format: %3s", *s);
3343 /* Convert from a selector string into a selector type. */
3346 pa_chk_field_selector (str)
3349 int middle, low, high;
3353 /* Read past any whitespace. */
3354 /* FIXME: should we read past newlines and formfeeds??? */
3355 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
3358 if ((*str)[1] == '\'' || (*str)[1] == '%')
3359 name[0] = tolower ((*str)[0]),
3361 else if ((*str)[2] == '\'' || (*str)[2] == '%')
3362 name[0] = tolower ((*str)[0]),
3363 name[1] = tolower ((*str)[1]),
3369 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
3373 middle = (low + high) / 2;
3374 cmp = strcmp (name, selector_table[middle].prefix);
3381 *str += strlen (name) + 1;
3382 return selector_table[middle].field_selector;
3385 while (low <= high);
3390 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3393 get_expression (str)
3399 save_in = input_line_pointer;
3400 input_line_pointer = str;
3401 seg = expression (&the_insn.exp);
3402 if (!(seg == absolute_section
3403 || seg == undefined_section
3404 || SEG_NORMAL (seg)))
3406 as_warn ("Bad segment in expression.");
3407 expr_end = input_line_pointer;
3408 input_line_pointer = save_in;
3411 expr_end = input_line_pointer;
3412 input_line_pointer = save_in;
3416 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3418 pa_get_absolute_expression (insn, strp)
3424 insn->field_selector = pa_chk_field_selector (strp);
3425 save_in = input_line_pointer;
3426 input_line_pointer = *strp;
3427 expression (&insn->exp);
3428 if (insn->exp.X_op != O_constant)
3430 as_bad ("Bad segment (should be absolute).");
3431 expr_end = input_line_pointer;
3432 input_line_pointer = save_in;
3435 expr_end = input_line_pointer;
3436 input_line_pointer = save_in;
3437 return evaluate_absolute (insn);
3440 /* Evaluate an absolute expression EXP which may be modified by
3441 the selector FIELD_SELECTOR. Return the value of the expression. */
3443 evaluate_absolute (insn)
3448 int field_selector = insn->field_selector;
3451 value = exp.X_add_number;
3453 switch (field_selector)
3459 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3461 if (value & 0x00000400)
3463 value = (value & 0xfffff800) >> 11;
3466 /* Sign extend from bit 21. */
3468 if (value & 0x00000400)
3469 value |= 0xfffff800;
3474 /* Arithmetic shift right 11 bits. */
3476 value = (value & 0xfffff800) >> 11;
3479 /* Set bits 0-20 to zero. */
3481 value = value & 0x7ff;
3484 /* Add 0x800 and arithmetic shift right 11 bits. */
3487 value = (value & 0xfffff800) >> 11;
3490 /* Set bitgs 0-21 to one. */
3492 value |= 0xfffff800;
3495 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3497 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
3501 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
3506 BAD_CASE (field_selector);
3512 /* Given an argument location specification return the associated
3513 argument location number. */
3516 pa_build_arg_reloc (type_name)
3520 if (strncasecmp (type_name, "no", 2) == 0)
3522 if (strncasecmp (type_name, "gr", 2) == 0)
3524 else if (strncasecmp (type_name, "fr", 2) == 0)
3526 else if (strncasecmp (type_name, "fu", 2) == 0)
3529 as_bad ("Invalid argument location: %s\n", type_name);
3534 /* Encode and return an argument relocation specification for
3535 the given register in the location specified by arg_reloc. */
3538 pa_align_arg_reloc (reg, arg_reloc)
3540 unsigned int arg_reloc;
3542 unsigned int new_reloc;
3544 new_reloc = arg_reloc;
3560 as_bad ("Invalid argument description: %d", reg);
3566 /* Parse a PA nullification completer (,n). Return nonzero if the
3567 completer was found; return zero if no completer was found. */
3579 if (strncasecmp (*s, "n", 1) == 0)
3583 as_bad ("Invalid Nullification: (%c)", **s);
3592 /* Parse a non-negated compare/subtract completer returning the
3593 number (for encoding in instrutions) of the given completer.
3595 ISBRANCH specifies whether or not this is parsing a condition
3596 completer for a branch (vs a nullification completer for a
3597 computational instruction. */
3600 pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
3605 char *name = *s + 1;
3613 while (**s != ',' && **s != ' ' && **s != '\t')
3617 if (strcmp (name, "=") == 0)
3621 else if (strcmp (name, "<") == 0)
3625 else if (strcmp (name, "<=") == 0)
3629 else if (strcmp (name, "<<") == 0)
3633 else if (strcmp (name, "<<=") == 0)
3637 else if (strcasecmp (name, "sv") == 0)
3641 else if (strcasecmp (name, "od") == 0)
3645 /* If we have something like addb,n then there is no condition
3647 else if (strcasecmp (name, "n") == 0 && isbranch)
3658 /* Reset pointers if this was really a ,n for a branch instruction. */
3659 if (cmpltr == 0 && *name == 'n' && isbranch)
3665 /* Parse a negated compare/subtract completer returning the
3666 number (for encoding in instrutions) of the given completer.
3668 ISBRANCH specifies whether or not this is parsing a condition
3669 completer for a branch (vs a nullification completer for a
3670 computational instruction. */
3673 pa_parse_neg_cmpsub_cmpltr (s, isbranch)
3678 char *name = *s + 1;
3686 while (**s != ',' && **s != ' ' && **s != '\t')
3690 if (strcasecmp (name, "tr") == 0)
3694 else if (strcmp (name, "<>") == 0)
3698 else if (strcmp (name, ">=") == 0)
3702 else if (strcmp (name, ">") == 0)
3706 else if (strcmp (name, ">>=") == 0)
3710 else if (strcmp (name, ">>") == 0)
3714 else if (strcasecmp (name, "nsv") == 0)
3718 else if (strcasecmp (name, "ev") == 0)
3722 /* If we have something like addb,n then there is no condition
3724 else if (strcasecmp (name, "n") == 0 && isbranch)
3735 /* Reset pointers if this was really a ,n for a branch instruction. */
3736 if (cmpltr == 0 && *name == 'n' && isbranch)
3742 /* Parse a non-negated addition completer returning the number
3743 (for encoding in instrutions) of the given completer.
3745 ISBRANCH specifies whether or not this is parsing a condition
3746 completer for a branch (vs a nullification completer for a
3747 computational instruction. */
3750 pa_parse_nonneg_add_cmpltr (s, isbranch)
3755 char *name = *s + 1;
3763 while (**s != ',' && **s != ' ' && **s != '\t')
3767 if (strcmp (name, "=") == 0)
3771 else if (strcmp (name, "<") == 0)
3775 else if (strcmp (name, "<=") == 0)
3779 else if (strcasecmp (name, "nuv") == 0)
3783 else if (strcasecmp (name, "znv") == 0)
3787 else if (strcasecmp (name, "sv") == 0)
3791 else if (strcasecmp (name, "od") == 0)
3795 /* If we have something like addb,n then there is no condition
3797 else if (strcasecmp (name, "n") == 0 && isbranch)
3808 /* Reset pointers if this was really a ,n for a branch instruction. */
3809 if (cmpltr == 0 && *name == 'n' && isbranch)
3815 /* Parse a negated addition completer returning the number
3816 (for encoding in instrutions) of the given completer.
3818 ISBRANCH specifies whether or not this is parsing a condition
3819 completer for a branch (vs a nullification completer for a
3820 computational instruction. */
3823 pa_parse_neg_add_cmpltr (s, isbranch)
3828 char *name = *s + 1;
3836 while (**s != ',' && **s != ' ' && **s != '\t')
3840 if (strcasecmp (name, "tr") == 0)
3844 else if (strcmp (name, "<>") == 0)
3848 else if (strcmp (name, ">=") == 0)
3852 else if (strcmp (name, ">") == 0)
3856 else if (strcasecmp (name, "uv") == 0)
3860 else if (strcasecmp (name, "vnz") == 0)
3864 else if (strcasecmp (name, "nsv") == 0)
3868 else if (strcasecmp (name, "ev") == 0)
3872 /* If we have something like addb,n then there is no condition
3874 else if (strcasecmp (name, "n") == 0 && isbranch)
3885 /* Reset pointers if this was really a ,n for a branch instruction. */
3886 if (cmpltr == 0 && *name == 'n' && isbranch)
3892 /* Handle a .BLOCK type pseudo-op. */
3900 unsigned int temp_size;
3903 temp_size = get_absolute_expression ();
3905 /* Always fill with zeros, that's what the HP assembler does. */
3908 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
3909 (relax_substateT) 0, (symbolS *) 0, 1, NULL);
3910 bzero (p, temp_size);
3912 /* Convert 2 bytes at a time. */
3914 for (i = 0; i < temp_size; i += 2)
3916 md_number_to_chars (p + i,
3918 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
3921 pa_undefine_label ();
3922 demand_empty_rest_of_line ();
3925 /* Handle a .CALL pseudo-op. This involves storing away information
3926 about where arguments are to be found so the linker can detect
3927 (and correct) argument location mismatches between caller and callee. */
3933 pa_call_args (&last_call_desc);
3934 demand_empty_rest_of_line ();
3937 /* Do the dirty work of building a call descriptor which describes
3938 where the caller placed arguments to a function call. */
3941 pa_call_args (call_desc)
3942 struct call_desc *call_desc;
3945 unsigned int temp, arg_reloc;
3947 while (!is_end_of_statement ())
3949 name = input_line_pointer;
3950 c = get_symbol_end ();
3951 /* Process a source argument. */
3952 if ((strncasecmp (name, "argw", 4) == 0))
3954 temp = atoi (name + 4);
3955 p = input_line_pointer;
3957 input_line_pointer++;
3958 name = input_line_pointer;
3959 c = get_symbol_end ();
3960 arg_reloc = pa_build_arg_reloc (name);
3961 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
3963 /* Process a return value. */
3964 else if ((strncasecmp (name, "rtnval", 6) == 0))
3966 p = input_line_pointer;
3968 input_line_pointer++;
3969 name = input_line_pointer;
3970 c = get_symbol_end ();
3971 arg_reloc = pa_build_arg_reloc (name);
3972 call_desc->arg_reloc |= (arg_reloc & 0x3);
3976 as_bad ("Invalid .CALL argument: %s", name);
3978 p = input_line_pointer;
3980 if (!is_end_of_statement ())
3981 input_line_pointer++;
3985 /* Return TRUE if FRAG1 and FRAG2 are the same. */
3988 is_same_frag (frag1, frag2)
3995 else if (frag2 == NULL)
3997 else if (frag1 == frag2)
3999 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
4000 return (is_same_frag (frag1, frag2->fr_next));
4006 /* Build an entry in the UNWIND subspace from the given function
4007 attributes in CALL_INFO. This is not needed for SOM as using
4008 R_ENTRY and R_EXIT relocations allow the linker to handle building
4009 of the unwind spaces. */
4012 pa_build_unwind_subspace (call_info)
4013 struct call_info *call_info;
4016 asection *seg, *save_seg;
4017 subsegT subseg, save_subseg;
4021 /* Get into the right seg/subseg. This may involve creating
4022 the seg the first time through. Make sure to have the
4023 old seg/subseg so that we can reset things when we are done. */
4024 subseg = SUBSEG_UNWIND;
4025 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
4026 if (seg == ASEC_NULL)
4028 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
4029 bfd_set_section_flags (stdoutput, seg,
4030 SEC_READONLY | SEC_HAS_CONTENTS
4031 | SEC_LOAD | SEC_RELOC);
4035 save_subseg = now_subseg;
4036 subseg_set (seg, subseg);
4039 /* Get some space to hold relocation information for the unwind
4043 /* Relocation info. for start offset of the function. */
4044 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4045 call_info->start_symbol, (offsetT) 0,
4046 (expressionS *) NULL, 0, R_PARISC_DIR32, e_fsel, 32, 0,
4051 /* Relocation info. for end offset of the function. */
4052 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4053 call_info->end_symbol, (offsetT) 0,
4054 (expressionS *) NULL, 0, R_PARISC_DIR32, e_fsel, 32, 0,
4058 unwind = (char *) &call_info->ci_unwind;
4059 for (i = 8; i < sizeof (struct unwind_table); i++)
4063 FRAG_APPEND_1_CHAR (c);
4067 /* Return back to the original segment/subsegment. */
4068 subseg_set (save_seg, save_subseg);
4072 /* Process a .CALLINFO pseudo-op. This information is used later
4073 to build unwind descriptors and maybe one day to support
4074 .ENTER and .LEAVE. */
4077 pa_callinfo (unused)
4083 /* .CALLINFO must appear within a procedure definition. */
4084 if (!within_procedure)
4085 as_bad (".callinfo is not within a procedure definition");
4087 /* Mark the fact that we found the .CALLINFO for the
4088 current procedure. */
4089 callinfo_found = TRUE;
4091 /* Iterate over the .CALLINFO arguments. */
4092 while (!is_end_of_statement ())
4094 name = input_line_pointer;
4095 c = get_symbol_end ();
4096 /* Frame size specification. */
4097 if ((strncasecmp (name, "frame", 5) == 0))
4099 p = input_line_pointer;
4101 input_line_pointer++;
4102 temp = get_absolute_expression ();
4103 if ((temp & 0x3) != 0)
4105 as_bad ("FRAME parameter must be a multiple of 8: %d\n", temp);
4109 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4110 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
4113 /* Entry register (GR, GR and SR) specifications. */
4114 else if ((strncasecmp (name, "entry_gr", 8) == 0))
4116 p = input_line_pointer;
4118 input_line_pointer++;
4119 temp = get_absolute_expression ();
4120 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4121 even though %r19 is caller saved. I think this is a bug in
4122 the HP assembler, and we are not going to emulate it. */
4123 if (temp < 3 || temp > 18)
4124 as_bad ("Value for ENTRY_GR must be in the range 3..18\n");
4125 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
4127 else if ((strncasecmp (name, "entry_fr", 8) == 0))
4129 p = input_line_pointer;
4131 input_line_pointer++;
4132 temp = get_absolute_expression ();
4133 /* Similarly the HP assembler takes 31 as the high bound even
4134 though %fr21 is the last callee saved floating point register. */
4135 if (temp < 12 || temp > 21)
4136 as_bad ("Value for ENTRY_FR must be in the range 12..21\n");
4137 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
4139 else if ((strncasecmp (name, "entry_sr", 8) == 0))
4141 p = input_line_pointer;
4143 input_line_pointer++;
4144 temp = get_absolute_expression ();
4146 as_bad ("Value for ENTRY_SR must be 3\n");
4148 /* Note whether or not this function performs any calls. */
4149 else if ((strncasecmp (name, "calls", 5) == 0) ||
4150 (strncasecmp (name, "caller", 6) == 0))
4152 p = input_line_pointer;
4155 else if ((strncasecmp (name, "no_calls", 8) == 0))
4157 p = input_line_pointer;
4160 /* Should RP be saved into the stack. */
4161 else if ((strncasecmp (name, "save_rp", 7) == 0))
4163 p = input_line_pointer;
4165 last_call_info->ci_unwind.descriptor.save_rp = 1;
4167 /* Likewise for SP. */
4168 else if ((strncasecmp (name, "save_sp", 7) == 0))
4170 p = input_line_pointer;
4172 last_call_info->ci_unwind.descriptor.save_sp = 1;
4174 /* Is this an unwindable procedure. If so mark it so
4175 in the unwind descriptor. */
4176 else if ((strncasecmp (name, "no_unwind", 9) == 0))
4178 p = input_line_pointer;
4180 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
4182 /* Is this an interrupt routine. If so mark it in the
4183 unwind descriptor. */
4184 else if ((strncasecmp (name, "hpux_int", 7) == 0))
4186 p = input_line_pointer;
4188 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
4190 /* Is this a millicode routine. "millicode" isn't in my
4191 assembler manual, but my copy is old. The HP assembler
4192 accepts it, and there's a place in the unwind descriptor
4193 to drop the information, so we'll accept it too. */
4194 else if ((strncasecmp (name, "millicode", 9) == 0))
4196 p = input_line_pointer;
4198 last_call_info->ci_unwind.descriptor.millicode = 1;
4202 as_bad ("Invalid .CALLINFO argument: %s", name);
4203 *input_line_pointer = c;
4205 if (!is_end_of_statement ())
4206 input_line_pointer++;
4209 demand_empty_rest_of_line ();
4212 /* Switch into the code subspace. */
4218 sd_chain_struct *sdchain;
4220 /* First time through it might be necessary to create the
4222 if ((sdchain = is_defined_space ("$TEXT$")) == NULL)
4224 sdchain = create_new_space (pa_def_spaces[0].name,
4225 pa_def_spaces[0].spnum,
4226 pa_def_spaces[0].loadable,
4227 pa_def_spaces[0].defined,
4228 pa_def_spaces[0].private,
4229 pa_def_spaces[0].sort,
4230 pa_def_spaces[0].segment, 0);
4233 SPACE_DEFINED (sdchain) = 1;
4234 subseg_set (text_section, SUBSEG_CODE);
4235 demand_empty_rest_of_line ();
4238 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4239 the .comm pseudo-op has the following symtax:
4241 <label> .comm <length>
4243 where <label> is optional and is a symbol whose address will be the start of
4244 a block of memory <length> bytes long. <length> must be an absolute
4245 expression. <length> bytes will be allocated in the current space
4254 label_symbol_struct *label_symbol = pa_get_label ();
4257 symbol = label_symbol->lss_label;
4262 size = get_absolute_expression ();
4266 /* It is incorrect to check S_IS_DEFINED at this point as
4267 the symbol will *always* be defined. FIXME. How to
4268 correctly determine when this label really as been
4270 if (S_GET_VALUE (symbol))
4272 if (S_GET_VALUE (symbol) != size)
4274 as_warn ("Length of .comm \"%s\" is already %ld. Not changed.",
4275 S_GET_NAME (symbol), S_GET_VALUE (symbol));
4281 S_SET_VALUE (symbol, size);
4282 S_SET_SEGMENT (symbol, &bfd_und_section);
4283 S_SET_EXTERNAL (symbol);
4285 /* colon() has already set the frag to the current location in the
4286 $BSS$ subspace; we need to reset the fragment to the zero address
4288 symbol->sy_frag = &zero_address_frag;
4291 demand_empty_rest_of_line ();
4294 /* Process a .END pseudo-op. */
4300 demand_empty_rest_of_line ();
4303 /* Process a .ENTER pseudo-op. This is not supported. */
4311 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4317 if (!within_procedure)
4318 as_bad ("Misplaced .entry. Ignored.");
4321 if (!callinfo_found)
4322 as_bad ("Missing .callinfo.");
4324 demand_empty_rest_of_line ();
4325 within_entry_exit = TRUE;
4328 /* SOM defers building of unwind descriptors until the link phase.
4329 The assembler is responsible for creating an R_ENTRY relocation
4330 to mark the beginning of a region and hold the unwind bits, and
4331 for creating an R_EXIT relocation to mark the end of the region.
4333 FIXME. ELF should be using the same conventions! The problem
4334 is an unwind requires too much relocation space. Hmmm. Maybe
4335 if we split the unwind bits up between the relocations which
4336 denote the entry and exit points. */
4337 if (last_call_info->start_symbol != NULL)
4339 char *where = frag_more (0);
4341 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4342 last_call_info->start_symbol, (offsetT) 0, NULL,
4343 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4344 (char *) &last_call_info->ci_unwind.descriptor);
4349 /* Handle a .EQU pseudo-op. */
4355 label_symbol_struct *label_symbol = pa_get_label ();
4360 symbol = label_symbol->lss_label;
4362 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
4364 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
4365 S_SET_SEGMENT (symbol, &bfd_abs_section);
4370 as_bad (".REG must use a label");
4372 as_bad (".EQU must use a label");
4375 pa_undefine_label ();
4376 demand_empty_rest_of_line ();
4379 /* Helper function. Does processing for the end of a function. This
4380 usually involves creating some relocations or building special
4381 symbols to mark the end of the function. */
4388 where = frag_more (0);
4391 /* Mark the end of the function, stuff away the location of the frag
4392 for the end of the function, and finally call pa_build_unwind_subspace
4393 to add an entry in the unwind table. */
4394 hppa_elf_mark_end_of_function ();
4395 pa_build_unwind_subspace (last_call_info);
4397 /* SOM defers building of unwind descriptors until the link phase.
4398 The assembler is responsible for creating an R_ENTRY relocation
4399 to mark the beginning of a region and hold the unwind bits, and
4400 for creating an R_EXIT relocation to mark the end of the region.
4402 FIXME. ELF should be using the same conventions! The problem
4403 is an unwind requires too much relocation space. Hmmm. Maybe
4404 if we split the unwind bits up between the relocations which
4405 denote the entry and exit points. */
4406 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4407 last_call_info->start_symbol, (offsetT) 0,
4408 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0, NULL);
4412 /* Process a .EXIT pseudo-op. */
4418 if (!within_procedure)
4419 as_bad (".EXIT must appear within a procedure");
4422 if (!callinfo_found)
4423 as_bad ("Missing .callinfo");
4426 if (!within_entry_exit)
4427 as_bad ("No .ENTRY for this .EXIT");
4430 within_entry_exit = FALSE;
4435 demand_empty_rest_of_line ();
4438 /* Process a .EXPORT directive. This makes functions external
4439 and provides information such as argument relocation entries
4449 name = input_line_pointer;
4450 c = get_symbol_end ();
4451 /* Make sure the given symbol exists. */
4452 if ((symbol = symbol_find_or_make (name)) == NULL)
4454 as_bad ("Cannot define export symbol: %s\n", name);
4455 p = input_line_pointer;
4457 input_line_pointer++;
4461 /* OK. Set the external bits and process argument relocations. */
4462 S_SET_EXTERNAL (symbol);
4463 p = input_line_pointer;
4465 if (!is_end_of_statement ())
4467 input_line_pointer++;
4468 pa_type_args (symbol, 1);
4472 demand_empty_rest_of_line ();
4475 /* Helper function to process arguments to a .EXPORT pseudo-op. */
4478 pa_type_args (symbolP, is_export)
4483 unsigned int temp, arg_reloc;
4484 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
4485 obj_symbol_type *symbol = (obj_symbol_type *) symbolP->bsym;
4487 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
4490 input_line_pointer += 8;
4491 symbolP->bsym->flags &= ~BSF_FUNCTION;
4492 S_SET_SEGMENT (symbolP, &bfd_abs_section);
4493 type = SYMBOL_TYPE_ABSOLUTE;
4495 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
4497 input_line_pointer += 4;
4498 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
4499 instead one should be IMPORTing/EXPORTing ENTRY types.
4501 Complain if one tries to EXPORT a CODE type since that's never
4502 done. Both GCC and HP C still try to IMPORT CODE types, so
4503 silently fix them to be ENTRY types. */
4504 if (symbolP->bsym->flags & BSF_FUNCTION)
4507 as_tsktsk ("Using ENTRY rather than CODE in export directive for %s", symbolP->bsym->name);
4509 symbolP->bsym->flags |= BSF_FUNCTION;
4510 type = SYMBOL_TYPE_ENTRY;
4514 symbolP->bsym->flags &= ~BSF_FUNCTION;
4515 type = SYMBOL_TYPE_CODE;
4518 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
4520 input_line_pointer += 4;
4521 symbolP->bsym->flags &= ~BSF_FUNCTION;
4522 type = SYMBOL_TYPE_DATA;
4524 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
4526 input_line_pointer += 5;
4527 symbolP->bsym->flags |= BSF_FUNCTION;
4528 type = SYMBOL_TYPE_ENTRY;
4530 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
4532 input_line_pointer += 9;
4533 symbolP->bsym->flags |= BSF_FUNCTION;
4534 type = SYMBOL_TYPE_MILLICODE;
4536 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
4538 input_line_pointer += 6;
4539 symbolP->bsym->flags &= ~BSF_FUNCTION;
4540 type = SYMBOL_TYPE_PLABEL;
4542 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
4544 input_line_pointer += 8;
4545 symbolP->bsym->flags |= BSF_FUNCTION;
4546 type = SYMBOL_TYPE_PRI_PROG;
4548 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
4550 input_line_pointer += 8;
4551 symbolP->bsym->flags |= BSF_FUNCTION;
4552 type = SYMBOL_TYPE_SEC_PROG;
4555 /* SOM requires much more information about symbol types
4556 than BFD understands. This is how we get this information
4557 to the SOM BFD backend. */
4558 #ifdef obj_set_symbol_type
4559 obj_set_symbol_type (symbolP->bsym, (int) type);
4562 /* Now that the type of the exported symbol has been handled,
4563 handle any argument relocation information. */
4564 while (!is_end_of_statement ())
4566 if (*input_line_pointer == ',')
4567 input_line_pointer++;
4568 name = input_line_pointer;
4569 c = get_symbol_end ();
4570 /* Argument sources. */
4571 if ((strncasecmp (name, "argw", 4) == 0))
4573 p = input_line_pointer;
4575 input_line_pointer++;
4576 temp = atoi (name + 4);
4577 name = input_line_pointer;
4578 c = get_symbol_end ();
4579 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
4580 symbol->tc_data.hppa_arg_reloc |= arg_reloc;
4581 *input_line_pointer = c;
4583 /* The return value. */
4584 else if ((strncasecmp (name, "rtnval", 6)) == 0)
4586 p = input_line_pointer;
4588 input_line_pointer++;
4589 name = input_line_pointer;
4590 c = get_symbol_end ();
4591 arg_reloc = pa_build_arg_reloc (name);
4592 symbol->tc_data.hppa_arg_reloc |= arg_reloc;
4593 *input_line_pointer = c;
4595 /* Privelege level. */
4596 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
4598 p = input_line_pointer;
4600 input_line_pointer++;
4601 temp = atoi (input_line_pointer);
4602 c = get_symbol_end ();
4603 *input_line_pointer = c;
4607 as_bad ("Undefined .EXPORT/.IMPORT argument (ignored): %s", name);
4608 p = input_line_pointer;
4611 if (!is_end_of_statement ())
4612 input_line_pointer++;
4616 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
4617 assembly file must either be defined in the assembly file, or
4618 explicitly IMPORTED from another. */
4627 name = input_line_pointer;
4628 c = get_symbol_end ();
4630 symbol = symbol_find (name);
4631 /* Ugh. We might be importing a symbol defined earlier in the file,
4632 in which case all the code below will really screw things up
4633 (set the wrong segment, symbol flags & type, etc). */
4634 if (symbol == NULL || !S_IS_DEFINED (symbol))
4636 symbol = symbol_find_or_make (name);
4637 p = input_line_pointer;
4640 if (!is_end_of_statement ())
4642 input_line_pointer++;
4643 pa_type_args (symbol, 0);
4647 /* Sigh. To be compatable with the HP assembler and to help
4648 poorly written assembly code, we assign a type based on
4649 the the current segment. Note only BSF_FUNCTION really
4650 matters, we do not need to set the full SYMBOL_TYPE_* info. */
4651 if (now_seg == text_section)
4652 symbol->bsym->flags |= BSF_FUNCTION;
4654 /* If the section is undefined, then the symbol is undefined
4655 Since this is an import, leave the section undefined. */
4656 S_SET_SEGMENT (symbol, &bfd_und_section);
4661 /* The symbol was already defined. Just eat everything up to
4662 the end of the current statement. */
4663 while (!is_end_of_statement ())
4664 input_line_pointer++;
4667 demand_empty_rest_of_line ();
4670 /* Handle a .LABEL pseudo-op. */
4678 name = input_line_pointer;
4679 c = get_symbol_end ();
4681 if (strlen (name) > 0)
4684 p = input_line_pointer;
4689 as_warn ("Missing label name on .LABEL");
4692 if (!is_end_of_statement ())
4694 as_warn ("extra .LABEL arguments ignored.");
4695 ignore_rest_of_line ();
4697 demand_empty_rest_of_line ();
4700 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
4709 /* Handle a .ORIGIN pseudo-op. */
4716 pa_undefine_label ();
4719 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
4720 is for static functions. FIXME. Should share more code with .EXPORT. */
4729 name = input_line_pointer;
4730 c = get_symbol_end ();
4732 if ((symbol = symbol_find_or_make (name)) == NULL)
4734 as_bad ("Cannot define static symbol: %s\n", name);
4735 p = input_line_pointer;
4737 input_line_pointer++;
4741 S_CLEAR_EXTERNAL (symbol);
4742 p = input_line_pointer;
4744 if (!is_end_of_statement ())
4746 input_line_pointer++;
4747 pa_type_args (symbol, 0);
4751 demand_empty_rest_of_line ();
4754 /* Handle a .PROC pseudo-op. It is used to mark the beginning
4755 of a procedure from a syntatical point of view. */
4761 struct call_info *call_info;
4762 if (within_procedure)
4763 as_fatal ("Nested procedures");
4765 /* Reset global variables for new procedure. */
4766 callinfo_found = FALSE;
4767 within_procedure = TRUE;
4770 Enabling this code creates severe problems with GDB. It appears as if
4771 inserting linker stubs between functions within a single .o makes GDB
4774 /* Create a new CODE subspace for each procedure if we are not
4775 using space/subspace aliases. */
4776 if (!USE_ALIASES && call_info_root != NULL)
4780 /* Force creation of a new $CODE$ subspace; inherit attributes from
4781 the first $CODE$ subspace. */
4782 seg = subseg_force_new ("$CODE$", 0);
4784 /* Now set the flags. */
4785 bfd_set_section_flags (stdoutput, seg,
4786 bfd_get_section_flags (abfd, text_section));
4788 /* Record any alignment request for this section. */
4789 record_alignment (seg,
4790 bfd_get_section_alignment (stdoutput, text_section));
4792 /* Change the "text_section" to be our new $CODE$ subspace. */
4794 subseg_set (text_section, 0);
4796 #ifdef obj_set_subsection_attributes
4797 /* Need a way to inherit the the access bits, sort key and quadrant
4798 from the first $CODE$ subspace. FIXME. */
4799 obj_set_subsection_attributes (seg, current_space->sd_seg, 0x2c, 24, 0);
4804 /* Create another call_info structure. */
4805 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
4808 as_fatal ("Cannot allocate unwind descriptor\n");
4810 bzero (call_info, sizeof (struct call_info));
4812 call_info->ci_next = NULL;
4814 if (call_info_root == NULL)
4816 call_info_root = call_info;
4817 last_call_info = call_info;
4821 last_call_info->ci_next = call_info;
4822 last_call_info = call_info;
4825 /* set up defaults on call_info structure */
4827 call_info->ci_unwind.descriptor.cannot_unwind = 0;
4828 call_info->ci_unwind.descriptor.region_desc = 1;
4829 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
4831 /* If we got a .PROC pseudo-op, we know that the function is defined
4832 locally. Make sure it gets into the symbol table. */
4834 label_symbol_struct *label_symbol = pa_get_label ();
4838 if (label_symbol->lss_label)
4840 last_call_info->start_symbol = label_symbol->lss_label;
4841 label_symbol->lss_label->bsym->flags |= BSF_FUNCTION;
4845 /* The label was defined in a different segment. Fix that
4846 along with the value and associated fragment. */
4847 S_SET_SEGMENT (last_call_info->start_symbol, now_seg);
4848 S_SET_VALUE (last_call_info->start_symbol,
4849 ((char*)obstack_next_free (&frags)
4850 - frag_now->fr_literal));
4851 last_call_info->start_symbol->sy_frag = frag_now;
4856 as_bad ("Missing function name for .PROC (corrupted label chain)");
4859 last_call_info->start_symbol = NULL;
4862 demand_empty_rest_of_line ();
4865 /* Process the syntatical end of a procedure. Make sure all the
4866 appropriate pseudo-ops were found within the procedure. */
4873 /* If we are within a procedure definition, make sure we've
4874 defined a label for the procedure; handle case where the
4875 label was defined after the .PROC directive.
4877 Note there's not need to diddle with the segment or fragment
4878 for the label symbol in this case. We have already switched
4879 into the new $CODE$ subspace at this point. */
4880 if (within_procedure && last_call_info->start_symbol == NULL)
4882 label_symbol_struct *label_symbol = pa_get_label ();
4886 if (label_symbol->lss_label)
4888 last_call_info->start_symbol = label_symbol->lss_label;
4889 label_symbol->lss_label->bsym->flags |= BSF_FUNCTION;
4891 /* Also handle allocation of a fixup to hold the unwind
4892 information when the label appears after the proc/procend. */
4893 if (within_entry_exit)
4895 char *where = frag_more (0);
4897 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4898 last_call_info->start_symbol, (offsetT) 0, NULL,
4899 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4900 (char *) &last_call_info->ci_unwind.descriptor);
4905 as_bad ("Missing function name for .PROC (corrupted label chain)");
4908 as_bad ("Missing function name for .PROC");
4911 if (!within_procedure)
4912 as_bad ("misplaced .procend");
4914 if (!callinfo_found)
4915 as_bad ("Missing .callinfo for this procedure");
4917 if (within_entry_exit)
4918 as_bad ("Missing .EXIT for a .ENTRY");
4921 /* ELF needs to mark the end of each function so that it can compute
4922 the size of the function (apparently its needed in the symbol table. */
4923 hppa_elf_mark_end_of_function ();
4926 within_procedure = FALSE;
4927 demand_empty_rest_of_line ();
4928 pa_undefine_label ();
4931 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
4932 then create a new space entry to hold the information specified
4933 by the parameters to the .SPACE directive. */
4935 static sd_chain_struct *
4936 pa_parse_space_stmt (space_name, create_flag)
4940 char *name, *ptemp, c;
4941 char loadable, defined, private, sort;
4943 asection *seg = NULL;
4944 sd_chain_struct *space;
4946 /* load default values */
4952 if (strcmp (space_name, "$TEXT$") == 0)
4954 seg = pa_def_spaces[0].segment;
4955 defined = pa_def_spaces[0].defined;
4956 private = pa_def_spaces[0].private;
4957 sort = pa_def_spaces[0].sort;
4958 spnum = pa_def_spaces[0].spnum;
4960 else if (strcmp (space_name, "$PRIVATE$") == 0)
4962 seg = pa_def_spaces[1].segment;
4963 defined = pa_def_spaces[1].defined;
4964 private = pa_def_spaces[1].private;
4965 sort = pa_def_spaces[1].sort;
4966 spnum = pa_def_spaces[1].spnum;
4969 if (!is_end_of_statement ())
4971 print_errors = FALSE;
4972 ptemp = input_line_pointer + 1;
4973 /* First see if the space was specified as a number rather than
4974 as a name. According to the PA assembly manual the rest of
4975 the line should be ignored. */
4976 temp = pa_parse_number (&ptemp, 0);
4980 input_line_pointer = ptemp;
4984 while (!is_end_of_statement ())
4986 input_line_pointer++;
4987 name = input_line_pointer;
4988 c = get_symbol_end ();
4989 if ((strncasecmp (name, "spnum", 5) == 0))
4991 *input_line_pointer = c;
4992 input_line_pointer++;
4993 spnum = get_absolute_expression ();
4995 else if ((strncasecmp (name, "sort", 4) == 0))
4997 *input_line_pointer = c;
4998 input_line_pointer++;
4999 sort = get_absolute_expression ();
5001 else if ((strncasecmp (name, "unloadable", 10) == 0))
5003 *input_line_pointer = c;
5006 else if ((strncasecmp (name, "notdefined", 10) == 0))
5008 *input_line_pointer = c;
5011 else if ((strncasecmp (name, "private", 7) == 0))
5013 *input_line_pointer = c;
5018 as_bad ("Invalid .SPACE argument");
5019 *input_line_pointer = c;
5020 if (!is_end_of_statement ())
5021 input_line_pointer++;
5025 print_errors = TRUE;
5028 if (create_flag && seg == NULL)
5029 seg = subseg_new (space_name, 0);
5031 /* If create_flag is nonzero, then create the new space with
5032 the attributes computed above. Else set the values in
5033 an already existing space -- this can only happen for
5034 the first occurence of a built-in space. */
5036 space = create_new_space (space_name, spnum, loadable, defined,
5037 private, sort, seg, 1);
5040 space = is_defined_space (space_name);
5041 SPACE_SPNUM (space) = spnum;
5042 SPACE_DEFINED (space) = defined & 1;
5043 SPACE_USER_DEFINED (space) = 1;
5046 #ifdef obj_set_section_attributes
5047 obj_set_section_attributes (seg, defined, private, sort, spnum);
5053 /* Handle a .SPACE pseudo-op; this switches the current space to the
5054 given space, creating the new space if necessary. */
5060 char *name, c, *space_name, *save_s;
5062 sd_chain_struct *sd_chain;
5064 if (within_procedure)
5066 as_bad ("Can\'t change spaces within a procedure definition. Ignored");
5067 ignore_rest_of_line ();
5071 /* Check for some of the predefined spaces. FIXME: most of the code
5072 below is repeated several times, can we extract the common parts
5073 and place them into a subroutine or something similar? */
5074 /* FIXME Is this (and the next IF stmt) really right?
5075 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5076 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
5078 input_line_pointer += 6;
5079 sd_chain = is_defined_space ("$TEXT$");
5080 if (sd_chain == NULL)
5081 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
5082 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5083 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
5085 current_space = sd_chain;
5086 subseg_set (text_section, sd_chain->sd_last_subseg);
5088 = pa_subsegment_to_subspace (text_section,
5089 sd_chain->sd_last_subseg);
5090 demand_empty_rest_of_line ();
5093 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
5095 input_line_pointer += 9;
5096 sd_chain = is_defined_space ("$PRIVATE$");
5097 if (sd_chain == NULL)
5098 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
5099 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5100 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
5102 current_space = sd_chain;
5103 subseg_set (data_section, sd_chain->sd_last_subseg);
5105 = pa_subsegment_to_subspace (data_section,
5106 sd_chain->sd_last_subseg);
5107 demand_empty_rest_of_line ();
5110 if (!strncasecmp (input_line_pointer,
5111 GDB_DEBUG_SPACE_NAME,
5112 strlen (GDB_DEBUG_SPACE_NAME)))
5114 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
5115 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
5116 if (sd_chain == NULL)
5117 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
5118 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5119 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
5121 current_space = sd_chain;
5124 asection *gdb_section
5125 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
5127 subseg_set (gdb_section, sd_chain->sd_last_subseg);
5129 = pa_subsegment_to_subspace (gdb_section,
5130 sd_chain->sd_last_subseg);
5132 demand_empty_rest_of_line ();
5136 /* It could be a space specified by number. */
5138 save_s = input_line_pointer;
5139 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
5141 if ((sd_chain = pa_find_space_by_number (temp)))
5143 current_space = sd_chain;
5145 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5147 = pa_subsegment_to_subspace (sd_chain->sd_seg,
5148 sd_chain->sd_last_subseg);
5149 demand_empty_rest_of_line ();
5154 /* Not a number, attempt to create a new space. */
5156 input_line_pointer = save_s;
5157 name = input_line_pointer;
5158 c = get_symbol_end ();
5159 space_name = xmalloc (strlen (name) + 1);
5160 strcpy (space_name, name);
5161 *input_line_pointer = c;
5163 sd_chain = pa_parse_space_stmt (space_name, 1);
5164 current_space = sd_chain;
5166 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5167 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
5168 sd_chain->sd_last_subseg);
5169 demand_empty_rest_of_line ();
5173 /* Switch to a new space. (I think). FIXME. */
5182 sd_chain_struct *space;
5184 name = input_line_pointer;
5185 c = get_symbol_end ();
5186 space = is_defined_space (name);
5190 md_number_to_chars (p, SPACE_SPNUM (space), 4);
5193 as_warn ("Undefined space: '%s' Assuming space number = 0.", name);
5195 *input_line_pointer = c;
5196 demand_empty_rest_of_line ();
5199 /* If VALUE is an exact power of two between zero and 2^31, then
5200 return log2 (VALUE). Else return -1. */
5208 while ((1 << shift) != value && shift < 32)
5217 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5218 given subspace, creating the new subspace if necessary.
5220 FIXME. Should mirror pa_space more closely, in particular how
5221 they're broken up into subroutines. */
5224 pa_subspace (unused)
5227 char *name, *ss_name, *alias, c;
5228 char loadable, code_only, common, dup_common, zero, sort;
5229 int i, access, space_index, alignment, quadrant, applicable, flags;
5230 sd_chain_struct *space;
5231 ssd_chain_struct *ssd;
5234 if (within_procedure)
5236 as_bad ("Can\'t change subspaces within a procedure definition. Ignored");
5237 ignore_rest_of_line ();
5241 name = input_line_pointer;
5242 c = get_symbol_end ();
5243 ss_name = xmalloc (strlen (name) + 1);
5244 strcpy (ss_name, name);
5245 *input_line_pointer = c;
5247 /* Load default values. */
5260 space = current_space;
5261 ssd = is_defined_subspace (ss_name);
5262 /* Allow user to override the builtin attributes of subspaces. But
5263 only allow the attributes to be changed once! */
5264 if (ssd && SUBSPACE_DEFINED (ssd))
5266 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
5267 if (!is_end_of_statement ())
5268 as_warn ("Parameters of an existing subspace can\'t be modified");
5269 demand_empty_rest_of_line ();
5274 /* A new subspace. Load default values if it matches one of
5275 the builtin subspaces. */
5277 while (pa_def_subspaces[i].name)
5279 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
5281 loadable = pa_def_subspaces[i].loadable;
5282 common = pa_def_subspaces[i].common;
5283 dup_common = pa_def_subspaces[i].dup_common;
5284 code_only = pa_def_subspaces[i].code_only;
5285 zero = pa_def_subspaces[i].zero;
5286 space_index = pa_def_subspaces[i].space_index;
5287 alignment = pa_def_subspaces[i].alignment;
5288 quadrant = pa_def_subspaces[i].quadrant;
5289 access = pa_def_subspaces[i].access;
5290 sort = pa_def_subspaces[i].sort;
5291 if (USE_ALIASES && pa_def_subspaces[i].alias)
5292 alias = pa_def_subspaces[i].alias;
5299 /* We should be working with a new subspace now. Fill in
5300 any information as specified by the user. */
5301 if (!is_end_of_statement ())
5303 input_line_pointer++;
5304 while (!is_end_of_statement ())
5306 name = input_line_pointer;
5307 c = get_symbol_end ();
5308 if ((strncasecmp (name, "quad", 4) == 0))
5310 *input_line_pointer = c;
5311 input_line_pointer++;
5312 quadrant = get_absolute_expression ();
5314 else if ((strncasecmp (name, "align", 5) == 0))
5316 *input_line_pointer = c;
5317 input_line_pointer++;
5318 alignment = get_absolute_expression ();
5319 if (log2 (alignment) == -1)
5321 as_bad ("Alignment must be a power of 2");
5325 else if ((strncasecmp (name, "access", 6) == 0))
5327 *input_line_pointer = c;
5328 input_line_pointer++;
5329 access = get_absolute_expression ();
5331 else if ((strncasecmp (name, "sort", 4) == 0))
5333 *input_line_pointer = c;
5334 input_line_pointer++;
5335 sort = get_absolute_expression ();
5337 else if ((strncasecmp (name, "code_only", 9) == 0))
5339 *input_line_pointer = c;
5342 else if ((strncasecmp (name, "unloadable", 10) == 0))
5344 *input_line_pointer = c;
5347 else if ((strncasecmp (name, "common", 6) == 0))
5349 *input_line_pointer = c;
5352 else if ((strncasecmp (name, "dup_comm", 8) == 0))
5354 *input_line_pointer = c;
5357 else if ((strncasecmp (name, "zero", 4) == 0))
5359 *input_line_pointer = c;
5362 else if ((strncasecmp (name, "first", 5) == 0))
5363 as_bad ("FIRST not supported as a .SUBSPACE argument");
5365 as_bad ("Invalid .SUBSPACE argument");
5366 if (!is_end_of_statement ())
5367 input_line_pointer++;
5371 /* Compute a reasonable set of BFD flags based on the information
5372 in the .subspace directive. */
5373 applicable = bfd_applicable_section_flags (stdoutput);
5376 flags |= (SEC_ALLOC | SEC_LOAD);
5379 if (common || dup_common)
5380 flags |= SEC_IS_COMMON;
5382 /* This is a zero-filled subspace (eg BSS). */
5386 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
5387 applicable &= flags;
5389 /* If this is an existing subspace, then we want to use the
5390 segment already associated with the subspace.
5392 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5393 lots of sections. It might be a problem in the PA ELF
5394 code, I do not know yet. For now avoid creating anything
5395 but the "standard" sections for ELF. */
5397 section = ssd->ssd_seg;
5399 section = subseg_new (alias, 0);
5400 else if (!alias && USE_ALIASES)
5402 as_warn ("Ignoring subspace decl due to ELF BFD bugs.");
5403 demand_empty_rest_of_line ();
5407 section = subseg_new (ss_name, 0);
5409 /* Now set the flags. */
5410 bfd_set_section_flags (stdoutput, section, applicable);
5412 /* Record any alignment request for this section. */
5413 record_alignment (section, log2 (alignment));
5415 /* Set the starting offset for this section. */
5416 bfd_set_section_vma (stdoutput, section,
5417 pa_subspace_start (space, quadrant));
5419 /* Now that all the flags are set, update an existing subspace,
5420 or create a new one. */
5423 current_subspace = update_subspace (space, ss_name, loadable,
5424 code_only, common, dup_common,
5425 sort, zero, access, space_index,
5426 alignment, quadrant,
5429 current_subspace = create_new_subspace (space, ss_name, loadable,
5431 dup_common, zero, sort,
5432 access, space_index,
5433 alignment, quadrant, section);
5435 demand_empty_rest_of_line ();
5436 current_subspace->ssd_seg = section;
5437 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
5439 SUBSPACE_DEFINED (current_subspace) = 1;
5443 /* Create default space and subspace dictionaries. */
5450 space_dict_root = NULL;
5451 space_dict_last = NULL;
5454 while (pa_def_spaces[i].name)
5458 /* Pick the right name to use for the new section. */
5459 if (pa_def_spaces[i].alias && USE_ALIASES)
5460 name = pa_def_spaces[i].alias;
5462 name = pa_def_spaces[i].name;
5464 pa_def_spaces[i].segment = subseg_new (name, 0);
5465 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
5466 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
5467 pa_def_spaces[i].private, pa_def_spaces[i].sort,
5468 pa_def_spaces[i].segment, 0);
5473 while (pa_def_subspaces[i].name)
5476 int applicable, subsegment;
5477 asection *segment = NULL;
5478 sd_chain_struct *space;
5480 /* Pick the right name for the new section and pick the right
5481 subsegment number. */
5482 if (pa_def_subspaces[i].alias && USE_ALIASES)
5484 name = pa_def_subspaces[i].alias;
5485 subsegment = pa_def_subspaces[i].subsegment;
5489 name = pa_def_subspaces[i].name;
5493 /* Create the new section. */
5494 segment = subseg_new (name, subsegment);
5497 /* For SOM we want to replace the standard .text, .data, and .bss
5498 sections with our own. We also want to set BFD flags for
5499 all the built-in subspaces. */
5500 if (!strcmp (pa_def_subspaces[i].name, "$CODE$") && !USE_ALIASES)
5502 text_section = segment;
5503 applicable = bfd_applicable_section_flags (stdoutput);
5504 bfd_set_section_flags (stdoutput, segment,
5505 applicable & (SEC_ALLOC | SEC_LOAD
5506 | SEC_RELOC | SEC_CODE
5508 | SEC_HAS_CONTENTS));
5510 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$") && !USE_ALIASES)
5512 data_section = segment;
5513 applicable = bfd_applicable_section_flags (stdoutput);
5514 bfd_set_section_flags (stdoutput, segment,
5515 applicable & (SEC_ALLOC | SEC_LOAD
5517 | SEC_HAS_CONTENTS));
5521 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$") && !USE_ALIASES)
5523 bss_section = segment;
5524 applicable = bfd_applicable_section_flags (stdoutput);
5525 bfd_set_section_flags (stdoutput, segment,
5526 applicable & SEC_ALLOC);
5528 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$") && !USE_ALIASES)
5530 applicable = bfd_applicable_section_flags (stdoutput);
5531 bfd_set_section_flags (stdoutput, segment,
5532 applicable & (SEC_ALLOC | SEC_LOAD
5535 | SEC_HAS_CONTENTS));
5537 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$") && !USE_ALIASES)
5539 applicable = bfd_applicable_section_flags (stdoutput);
5540 bfd_set_section_flags (stdoutput, segment,
5541 applicable & (SEC_ALLOC | SEC_LOAD
5544 | SEC_HAS_CONTENTS));
5547 /* Find the space associated with this subspace. */
5548 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
5549 def_space_index].segment);
5552 as_fatal ("Internal error: Unable to find containing space for %s.",
5553 pa_def_subspaces[i].name);
5556 create_new_subspace (space, name,
5557 pa_def_subspaces[i].loadable,
5558 pa_def_subspaces[i].code_only,
5559 pa_def_subspaces[i].common,
5560 pa_def_subspaces[i].dup_common,
5561 pa_def_subspaces[i].zero,
5562 pa_def_subspaces[i].sort,
5563 pa_def_subspaces[i].access,
5564 pa_def_subspaces[i].space_index,
5565 pa_def_subspaces[i].alignment,
5566 pa_def_subspaces[i].quadrant,
5574 /* Create a new space NAME, with the appropriate flags as defined
5575 by the given parameters. */
5577 static sd_chain_struct *
5578 create_new_space (name, spnum, loadable, defined, private,
5579 sort, seg, user_defined)
5589 sd_chain_struct *chain_entry;
5591 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
5593 as_fatal ("Out of memory: could not allocate new space chain entry: %s\n",
5596 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
5597 strcpy (SPACE_NAME (chain_entry), name);
5598 SPACE_DEFINED (chain_entry) = defined;
5599 SPACE_USER_DEFINED (chain_entry) = user_defined;
5600 SPACE_SPNUM (chain_entry) = spnum;
5602 chain_entry->sd_seg = seg;
5603 chain_entry->sd_last_subseg = -1;
5604 chain_entry->sd_subspaces = NULL;
5605 chain_entry->sd_next = NULL;
5607 /* Find spot for the new space based on its sort key. */
5608 if (!space_dict_last)
5609 space_dict_last = chain_entry;
5611 if (space_dict_root == NULL)
5612 space_dict_root = chain_entry;
5615 sd_chain_struct *chain_pointer;
5616 sd_chain_struct *prev_chain_pointer;
5618 chain_pointer = space_dict_root;
5619 prev_chain_pointer = NULL;
5621 while (chain_pointer)
5623 prev_chain_pointer = chain_pointer;
5624 chain_pointer = chain_pointer->sd_next;
5627 /* At this point we've found the correct place to add the new
5628 entry. So add it and update the linked lists as appropriate. */
5629 if (prev_chain_pointer)
5631 chain_entry->sd_next = chain_pointer;
5632 prev_chain_pointer->sd_next = chain_entry;
5636 space_dict_root = chain_entry;
5637 chain_entry->sd_next = chain_pointer;
5640 if (chain_entry->sd_next == NULL)
5641 space_dict_last = chain_entry;
5644 /* This is here to catch predefined spaces which do not get
5645 modified by the user's input. Another call is found at
5646 the bottom of pa_parse_space_stmt to handle cases where
5647 the user modifies a predefined space. */
5648 #ifdef obj_set_section_attributes
5649 obj_set_section_attributes (seg, defined, private, sort, spnum);
5655 /* Create a new subspace NAME, with the appropriate flags as defined
5656 by the given parameters.
5658 Add the new subspace to the subspace dictionary chain in numerical
5659 order as defined by the SORT entries. */
5661 static ssd_chain_struct *
5662 create_new_subspace (space, name, loadable, code_only, common,
5663 dup_common, is_zero, sort, access, space_index,
5664 alignment, quadrant, seg)
5665 sd_chain_struct *space;
5667 int loadable, code_only, common, dup_common, is_zero;
5675 ssd_chain_struct *chain_entry;
5677 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
5679 as_fatal ("Out of memory: could not allocate new subspace chain entry: %s\n", name);
5681 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
5682 strcpy (SUBSPACE_NAME (chain_entry), name);
5684 /* Initialize subspace_defined. When we hit a .subspace directive
5685 we'll set it to 1 which "locks-in" the subspace attributes. */
5686 SUBSPACE_DEFINED (chain_entry) = 0;
5688 chain_entry->ssd_subseg = USE_ALIASES ? pa_next_subseg (space) : 0;
5689 chain_entry->ssd_seg = seg;
5690 chain_entry->ssd_next = NULL;
5692 /* Find spot for the new subspace based on its sort key. */
5693 if (space->sd_subspaces == NULL)
5694 space->sd_subspaces = chain_entry;
5697 ssd_chain_struct *chain_pointer;
5698 ssd_chain_struct *prev_chain_pointer;
5700 chain_pointer = space->sd_subspaces;
5701 prev_chain_pointer = NULL;
5703 while (chain_pointer)
5705 prev_chain_pointer = chain_pointer;
5706 chain_pointer = chain_pointer->ssd_next;
5709 /* Now we have somewhere to put the new entry. Insert it and update
5711 if (prev_chain_pointer)
5713 chain_entry->ssd_next = chain_pointer;
5714 prev_chain_pointer->ssd_next = chain_entry;
5718 space->sd_subspaces = chain_entry;
5719 chain_entry->ssd_next = chain_pointer;
5723 #ifdef obj_set_subsection_attributes
5724 obj_set_subsection_attributes (seg, space->sd_seg, access,
5731 /* Update the information for the given subspace based upon the
5732 various arguments. Return the modified subspace chain entry. */
5734 static ssd_chain_struct *
5735 update_subspace (space, name, loadable, code_only, common, dup_common, sort,
5736 zero, access, space_index, alignment, quadrant, section)
5737 sd_chain_struct *space;
5751 ssd_chain_struct *chain_entry;
5753 chain_entry = is_defined_subspace (name);
5755 #ifdef obj_set_subsection_attributes
5756 obj_set_subsection_attributes (section, space->sd_seg, access,
5763 /* Return the space chain entry for the space with the name NAME or
5764 NULL if no such space exists. */
5766 static sd_chain_struct *
5767 is_defined_space (name)
5770 sd_chain_struct *chain_pointer;
5772 for (chain_pointer = space_dict_root;
5774 chain_pointer = chain_pointer->sd_next)
5776 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
5777 return chain_pointer;
5780 /* No mapping from segment to space was found. Return NULL. */
5784 /* Find and return the space associated with the given seg. If no mapping
5785 from the given seg to a space is found, then return NULL.
5787 Unlike subspaces, the number of spaces is not expected to grow much,
5788 so a linear exhaustive search is OK here. */
5790 static sd_chain_struct *
5791 pa_segment_to_space (seg)
5794 sd_chain_struct *space_chain;
5796 /* Walk through each space looking for the correct mapping. */
5797 for (space_chain = space_dict_root;
5799 space_chain = space_chain->sd_next)
5801 if (space_chain->sd_seg == seg)
5805 /* Mapping was not found. Return NULL. */
5809 /* Return the space chain entry for the subspace with the name NAME or
5810 NULL if no such subspace exists.
5812 Uses a linear search through all the spaces and subspaces, this may
5813 not be appropriate if we ever being placing each function in its
5816 static ssd_chain_struct *
5817 is_defined_subspace (name)
5820 sd_chain_struct *space_chain;
5821 ssd_chain_struct *subspace_chain;
5823 /* Walk through each space. */
5824 for (space_chain = space_dict_root;
5826 space_chain = space_chain->sd_next)
5828 /* Walk through each subspace looking for a name which matches. */
5829 for (subspace_chain = space_chain->sd_subspaces;
5831 subspace_chain = subspace_chain->ssd_next)
5832 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
5833 return subspace_chain;
5836 /* Subspace wasn't found. Return NULL. */
5840 /* Find and return the subspace associated with the given seg. If no
5841 mapping from the given seg to a subspace is found, then return NULL.
5843 If we ever put each procedure/function within its own subspace
5844 (to make life easier on the compiler and linker), then this will have
5845 to become more efficient. */
5847 static ssd_chain_struct *
5848 pa_subsegment_to_subspace (seg, subseg)
5852 sd_chain_struct *space_chain;
5853 ssd_chain_struct *subspace_chain;
5855 /* Walk through each space. */
5856 for (space_chain = space_dict_root;
5858 space_chain = space_chain->sd_next)
5860 if (space_chain->sd_seg == seg)
5862 /* Walk through each subspace within each space looking for
5863 the correct mapping. */
5864 for (subspace_chain = space_chain->sd_subspaces;
5866 subspace_chain = subspace_chain->ssd_next)
5867 if (subspace_chain->ssd_subseg == (int) subseg)
5868 return subspace_chain;
5872 /* No mapping from subsegment to subspace found. Return NULL. */
5876 /* Given a number, try and find a space with the name number.
5878 Return a pointer to a space dictionary chain entry for the space
5879 that was found or NULL on failure. */
5881 static sd_chain_struct *
5882 pa_find_space_by_number (number)
5885 sd_chain_struct *space_chain;
5887 for (space_chain = space_dict_root;
5889 space_chain = space_chain->sd_next)
5891 if (SPACE_SPNUM (space_chain) == number)
5895 /* No appropriate space found. Return NULL. */
5899 /* Return the starting address for the given subspace. If the starting
5900 address is unknown then return zero. */
5903 pa_subspace_start (space, quadrant)
5904 sd_chain_struct *space;
5907 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
5908 is not correct for the PA OSF1 port. */
5909 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
5911 else if (space->sd_seg == data_section && quadrant == 1)
5917 /* FIXME. Needs documentation. */
5919 pa_next_subseg (space)
5920 sd_chain_struct *space;
5923 space->sd_last_subseg++;
5924 return space->sd_last_subseg;
5927 /* Helper function for pa_stringer. Used to find the end of
5934 unsigned int c = *s & CHAR_MASK;
5946 /* Handle a .STRING type pseudo-op. */
5949 pa_stringer (append_zero)
5952 char *s, num_buf[4];
5956 /* Preprocess the string to handle PA-specific escape sequences.
5957 For example, \xDD where DD is a hexidecimal number should be
5958 changed to \OOO where OOO is an octal number. */
5960 /* Skip the opening quote. */
5961 s = input_line_pointer + 1;
5963 while (is_a_char (c = pa_stringer_aux (s++)))
5970 /* Handle \x<num>. */
5973 unsigned int number;
5978 /* Get pas the 'x'. */
5980 for (num_digit = 0, number = 0, dg = *s;
5982 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
5983 || (dg >= 'A' && dg <= 'F'));
5987 number = number * 16 + dg - '0';
5988 else if (dg >= 'a' && dg <= 'f')
5989 number = number * 16 + dg - 'a' + 10;
5991 number = number * 16 + dg - 'A' + 10;
6001 sprintf (num_buf, "%02o", number);
6004 sprintf (num_buf, "%03o", number);
6007 for (i = 0; i <= num_digit; i++)
6008 s_start[i] = num_buf[i];
6012 /* This might be a "\"", skip over the escaped char. */
6019 stringer (append_zero);
6020 pa_undefine_label ();
6023 /* Handle a .VERSION pseudo-op. */
6030 pa_undefine_label ();
6033 /* Handle a .COPYRIGHT pseudo-op. */
6036 pa_copyright (unused)
6040 pa_undefine_label ();
6043 /* Just like a normal cons, but when finished we have to undefine
6044 the latest space label. */
6051 pa_undefine_label ();
6054 /* Switch to the data space. As usual delete our label. */
6061 pa_undefine_label ();
6064 /* Like float_cons, but we need to undefine our label. */
6067 pa_float_cons (float_type)
6070 float_cons (float_type);
6071 pa_undefine_label ();
6074 /* Like s_fill, but delete our label when finished. */
6081 pa_undefine_label ();
6084 /* Like lcomm, but delete our label when finished. */
6087 pa_lcomm (needs_align)
6090 s_lcomm (needs_align);
6091 pa_undefine_label ();
6094 /* Like lsym, but delete our label when finished. */
6101 pa_undefine_label ();
6104 /* Switch to the text space. Like s_text, but delete our
6105 label when finished. */
6111 pa_undefine_label ();
6114 /* On the PA relocations which involve function symbols must not be
6115 adjusted. This so that the linker can know when/how to create argument
6116 relocation stubs for indirect calls and calls to static functions.
6118 "T" field selectors create DLT relative fixups for accessing
6119 globals and statics in PIC code; each DLT relative fixup creates
6120 an entry in the DLT table. The entries contain the address of
6121 the final target (eg accessing "foo" would create a DLT entry
6122 with the address of "foo").
6124 Unfortunately, the HP linker doesn't take into account any addend
6125 when generating the DLT; so accessing $LIT$+8 puts the address of
6126 $LIT$ into the DLT rather than the address of $LIT$+8.
6128 The end result is we can't perform relocation symbol reductions for
6129 any fixup which creates entries in the DLT (eg they use "T" field
6132 FIXME. Also reject R_HPPA relocations which are 32 bits
6133 wide. Helps with code lables in arrays for SOM. (SOM BFD code
6134 needs to generate relocations to push the addend and symbol value
6135 onto the stack, add them, then pop the value off the stack and
6136 use it in a relocation -- yuk. */
6139 hppa_fix_adjustable (fixp)
6142 struct hppa_fix_struct *hppa_fix;
6144 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
6146 /* Reject reductions of symbols in 32bit plabel relocs. */
6147 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
6150 /* Reject reductions of symbols in DLT relative relocs. */
6151 if (hppa_fix->fx_r_field == e_tsel
6152 || hppa_fix->fx_r_field == e_ltsel
6153 || hppa_fix->fx_r_field == e_rtsel)
6156 /* Reject reductions of function symbols. */
6157 if (fixp->fx_addsy == 0
6158 || (fixp->fx_addsy->bsym->flags & BSF_FUNCTION) == 0)
6164 /* Return nonzero if the fixup in FIXP will require a relocation,
6165 even it if appears that the fixup could be completely handled
6169 hppa_force_relocation (fixp)
6172 struct hppa_fix_struct *hppa_fixp;
6174 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
6176 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT)
6180 #define stub_needed(CALLER, CALLEE) \
6181 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6183 /* It is necessary to force PC-relative calls/jumps to have a relocation
6184 entry if they're going to need either a argument relocation or long
6185 call stub. FIXME. Can't we need the same for absolute calls? */
6186 if (fixp->fx_pcrel && fixp->fx_addsy
6187 && (stub_needed (((obj_symbol_type *)
6188 fixp->fx_addsy->bsym)->tc_data.hppa_arg_reloc,
6189 hppa_fixp->fx_arg_reloc)))
6194 /* No need (yet) to force another relocations to be emitted. */
6198 /* Now for some ELF specific code. FIXME. */
6200 /* Mark the end of a function so that it's possible to compute
6201 the size of the function in hppa_elf_final_processing. */
6204 hppa_elf_mark_end_of_function ()
6206 /* ELF does not have EXIT relocations. All we do is create a
6207 temporary symbol marking the end of the function. */
6208 char *name = (char *)
6209 xmalloc (strlen ("L$\001end_") +
6210 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
6216 strcpy (name, "L$\001end_");
6217 strcat (name, S_GET_NAME (last_call_info->start_symbol));
6219 /* If we have a .exit followed by a .procend, then the
6220 symbol will have already been defined. */
6221 symbolP = symbol_find (name);
6224 /* The symbol has already been defined! This can
6225 happen if we have a .exit followed by a .procend.
6227 This is *not* an error. All we want to do is free
6228 the memory we just allocated for the name and continue. */
6233 /* symbol value should be the offset of the
6234 last instruction of the function */
6235 symbolP = symbol_new (name, now_seg,
6236 (valueT) (obstack_next_free (&frags)
6237 - frag_now->fr_literal - 4),
6241 symbolP->bsym->flags = BSF_LOCAL;
6242 symbol_table_insert (symbolP);
6246 last_call_info->end_symbol = symbolP;
6248 as_bad ("Symbol '%s' could not be created.", name);
6252 as_bad ("No memory for symbol name.");
6256 /* For ELF, this function serves one purpose: to setup the st_size
6257 field of STT_FUNC symbols. To do this, we need to scan the
6258 call_info structure list, determining st_size in by taking the
6259 difference in the address of the beginning/end marker symbols. */
6262 elf_hppa_final_processing ()
6264 struct call_info *call_info_pointer;
6266 for (call_info_pointer = call_info_root;
6268 call_info_pointer = call_info_pointer->ci_next)
6270 elf_symbol_type *esym
6271 = (elf_symbol_type *) call_info_pointer->start_symbol->bsym;
6272 esym->internal_elf_sym.st_size =
6273 S_GET_VALUE (call_info_pointer->end_symbol)
6274 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;