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Diffstat (limited to 'gas/config/tc-hppa.c')
| -rw-r--r-- | gas/config/tc-hppa.c | 6731 |
1 files changed, 0 insertions, 6731 deletions
diff --git a/gas/config/tc-hppa.c b/gas/config/tc-hppa.c deleted file mode 100644 index c2431d9ca45..00000000000 --- a/gas/config/tc-hppa.c +++ /dev/null @@ -1,6731 +0,0 @@ -/* tc-hppa.c -- Assemble for the PA - Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 1999 - Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to the Free - Software Foundation, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - - -/* HP PA-RISC support was contributed by the Center for Software Science - at the University of Utah. */ - -#include <stdio.h> -#include <ctype.h> - -#include "as.h" -#include "subsegs.h" - -#include "bfd/libhppa.h" -#include "bfd/libbfd.h" - -/* Be careful, this file includes data *declarations*. */ -#include "opcode/hppa.h" - -/* A "convient" place to put object file dependencies which do - not need to be seen outside of tc-hppa.c. */ -#ifdef OBJ_ELF -/* Names of various debugging spaces/subspaces. */ -#define GDB_DEBUG_SPACE_NAME ".stab" -#define GDB_STRINGS_SUBSPACE_NAME ".stabstr" -#define GDB_SYMBOLS_SUBSPACE_NAME ".stab" -#define UNWIND_SECTION_NAME ".PARISC.unwind" -/* Nonzero if CODE is a fixup code needing further processing. */ - -/* Object file formats specify relocation types. */ -typedef elf32_hppa_reloc_type reloc_type; - -/* Object file formats specify BFD symbol types. */ -typedef elf_symbol_type obj_symbol_type; - -/* How to generate a relocation. */ -#define hppa_gen_reloc_type hppa_elf_gen_reloc_type - -/* ELF objects can have versions, but apparently do not have anywhere - to store a copyright string. */ -#define obj_version obj_elf_version -#define obj_copyright obj_elf_version - -/* Use space aliases. */ -#define USE_ALIASES 1 -#endif - -#ifdef OBJ_SOM -/* Names of various debugging spaces/subspaces. */ -#define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$" -#define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$" -#define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$" -#define UNWIND_SECTION_NAME "$UNWIND$" - -/* Object file formats specify relocation types. */ -typedef int reloc_type; - -/* SOM objects can have both a version string and a copyright string. */ -#define obj_version obj_som_version -#define obj_copyright obj_som_copyright - -/* Do not use space aliases. */ -#define USE_ALIASES 0 - -/* How to generate a relocation. */ -#define hppa_gen_reloc_type hppa_som_gen_reloc_type - -/* Object file formats specify BFD symbol types. */ -typedef som_symbol_type obj_symbol_type; - -/* This apparently isn't in older versions of hpux reloc.h. */ -#ifndef R_DLT_REL -#define R_DLT_REL 0x78 -#endif -#endif - -#ifndef R_N0SEL -#define R_N0SEL 0xd8 -#endif - -#ifndef R_N1SEL -#define R_N1SEL 0xd9 -#endif - -/* Various structures and types used internally in tc-hppa.c. */ - -/* Unwind table and descriptor. FIXME: Sync this with GDB version. */ - -struct unwind_desc - { - unsigned int cannot_unwind:1; - unsigned int millicode:1; - unsigned int millicode_save_rest:1; - unsigned int region_desc:2; - unsigned int save_sr:2; - unsigned int entry_fr:4; - unsigned int entry_gr:5; - unsigned int args_stored:1; - unsigned int call_fr:5; - unsigned int call_gr:5; - unsigned int save_sp:1; - unsigned int save_rp:1; - unsigned int save_rp_in_frame:1; - unsigned int extn_ptr_defined:1; - unsigned int cleanup_defined:1; - - unsigned int hpe_interrupt_marker:1; - unsigned int hpux_interrupt_marker:1; - unsigned int reserved:3; - unsigned int frame_size:27; - }; - -struct unwind_table - { - /* Starting and ending offsets of the region described by - descriptor. */ - unsigned int start_offset; - unsigned int end_offset; - struct unwind_desc descriptor; - }; - -/* This structure is used by the .callinfo, .enter, .leave pseudo-ops to - control the entry and exit code they generate. It is also used in - creation of the correct stack unwind descriptors. - - NOTE: GAS does not support .enter and .leave for the generation of - prologues and epilogues. FIXME. - - The fields in structure roughly correspond to the arguments available on the - .callinfo pseudo-op. */ - -struct call_info - { - /* The unwind descriptor being built. */ - struct unwind_table ci_unwind; - - /* Name of this function. */ - symbolS *start_symbol; - - /* (temporary) symbol used to mark the end of this function. */ - symbolS *end_symbol; - - /* Next entry in the chain. */ - struct call_info *ci_next; - }; - -/* Operand formats for FP instructions. Note not all FP instructions - allow all four formats to be used (for example fmpysub only allows - SGL and DBL). */ -typedef enum - { - SGL, DBL, ILLEGAL_FMT, QUAD, W, UW, DW, UDW, QW, UQW - } -fp_operand_format; - -/* This fully describes the symbol types which may be attached to - an EXPORT or IMPORT directive. Only SOM uses this formation - (ELF has no need for it). */ -typedef enum - { - SYMBOL_TYPE_UNKNOWN, - SYMBOL_TYPE_ABSOLUTE, - SYMBOL_TYPE_CODE, - SYMBOL_TYPE_DATA, - SYMBOL_TYPE_ENTRY, - SYMBOL_TYPE_MILLICODE, - SYMBOL_TYPE_PLABEL, - SYMBOL_TYPE_PRI_PROG, - SYMBOL_TYPE_SEC_PROG, - } -pa_symbol_type; - -/* This structure contains information needed to assemble - individual instructions. */ -struct pa_it - { - /* Holds the opcode after parsing by pa_ip. */ - unsigned long opcode; - - /* Holds an expression associated with the current instruction. */ - expressionS exp; - - /* Does this instruction use PC-relative addressing. */ - int pcrel; - - /* Floating point formats for operand1 and operand2. */ - fp_operand_format fpof1; - fp_operand_format fpof2; - - - /* Holds the field selector for this instruction - (for example L%, LR%, etc). */ - long field_selector; - - /* Holds any argument relocation bits associated with this - instruction. (instruction should be some sort of call). */ - long arg_reloc; - - /* The format specification for this instruction. */ - int format; - - /* The relocation (if any) associated with this instruction. */ - reloc_type reloc; - }; - -/* PA-89 floating point registers are arranged like this: - - - +--------------+--------------+ - | 0 or 16L | 16 or 16R | - +--------------+--------------+ - | 1 or 17L | 17 or 17R | - +--------------+--------------+ - | | | - - . . . - . . . - . . . - - | | | - +--------------+--------------+ - | 14 or 30L | 30 or 30R | - +--------------+--------------+ - | 15 or 31L | 31 or 31R | - +--------------+--------------+ - - - The following is a version of pa_parse_number that - handles the L/R notation and returns the correct - value to put into the instruction register field. - The correct value to put into the instruction is - encoded in the structure 'pa_11_fp_reg_struct'. */ - -struct pa_11_fp_reg_struct - { - /* The register number. */ - char number_part; - - /* L/R selector. */ - char l_r_select; - }; - -/* Additional information needed to build argument relocation stubs. */ -struct call_desc - { - /* The argument relocation specification. */ - unsigned int arg_reloc; - - /* Number of arguments. */ - unsigned int arg_count; - }; - -/* This structure defines an entry in the subspace dictionary - chain. */ - -struct subspace_dictionary_chain - { - /* Nonzero if this space has been defined by the user code. */ - unsigned int ssd_defined; - - /* Name of this subspace. */ - char *ssd_name; - - /* GAS segment and subsegment associated with this subspace. */ - asection *ssd_seg; - int ssd_subseg; - - /* Next space in the subspace dictionary chain. */ - struct subspace_dictionary_chain *ssd_next; - }; - -typedef struct subspace_dictionary_chain ssd_chain_struct; - -/* This structure defines an entry in the subspace dictionary - chain. */ - -struct space_dictionary_chain - { - /* Nonzero if this space has been defined by the user code or - as a default space. */ - unsigned int sd_defined; - - /* Nonzero if this spaces has been defined by the user code. */ - unsigned int sd_user_defined; - - /* The space number (or index). */ - unsigned int sd_spnum; - - /* The name of this subspace. */ - char *sd_name; - - /* GAS segment to which this subspace corresponds. */ - asection *sd_seg; - - /* Current subsegment number being used. */ - int sd_last_subseg; - - /* The chain of subspaces contained within this space. */ - ssd_chain_struct *sd_subspaces; - - /* The next entry in the space dictionary chain. */ - struct space_dictionary_chain *sd_next; - }; - -typedef struct space_dictionary_chain sd_chain_struct; - -/* Structure for previous label tracking. Needed so that alignments, - callinfo declarations, etc can be easily attached to a particular - label. */ -typedef struct label_symbol_struct - { - symbolS *lss_label; - sd_chain_struct *lss_space; - struct label_symbol_struct *lss_next; - } -label_symbol_struct; - -/* This structure defines attributes of the default subspace - dictionary entries. */ - -struct default_subspace_dict - { - /* Name of the subspace. */ - char *name; - - /* FIXME. Is this still needed? */ - char defined; - - /* Nonzero if this subspace is loadable. */ - char loadable; - - /* Nonzero if this subspace contains only code. */ - char code_only; - - /* Nonzero if this is a common subspace. */ - char common; - - /* Nonzero if this is a common subspace which allows symbols - to be multiply defined. */ - char dup_common; - - /* Nonzero if this subspace should be zero filled. */ - char zero; - - /* Sort key for this subspace. */ - unsigned char sort; - - /* Access control bits for this subspace. Can represent RWX access - as well as privilege level changes for gateways. */ - int access; - - /* Index of containing space. */ - int space_index; - - /* Alignment (in bytes) of this subspace. */ - int alignment; - - /* Quadrant within space where this subspace should be loaded. */ - int quadrant; - - /* An index into the default spaces array. */ - int def_space_index; - - /* An alias for this section (or NULL if no alias exists). */ - char *alias; - - /* Subsegment associated with this subspace. */ - subsegT subsegment; - }; - -/* This structure defines attributes of the default space - dictionary entries. */ - -struct default_space_dict - { - /* Name of the space. */ - char *name; - - /* Space number. It is possible to identify spaces within - assembly code numerically! */ - int spnum; - - /* Nonzero if this space is loadable. */ - char loadable; - - /* Nonzero if this space is "defined". FIXME is still needed */ - char defined; - - /* Nonzero if this space can not be shared. */ - char private; - - /* Sort key for this space. */ - unsigned char sort; - - /* Segment associated with this space. */ - asection *segment; - - /* An alias for this section (or NULL if no alias exists). */ - char *alias; - }; - -/* Extra information needed to perform fixups (relocations) on the PA. */ -struct hppa_fix_struct - { - /* The field selector. */ - enum hppa_reloc_field_selector_type_alt fx_r_field; - - /* Type of fixup. */ - int fx_r_type; - - /* Format of fixup. */ - int fx_r_format; - - /* Argument relocation bits. */ - long fx_arg_reloc; - - /* The segment this fixup appears in. */ - segT segment; - }; - -/* Structure to hold information about predefined registers. */ - -struct pd_reg - { - char *name; - int value; - }; - -/* This structure defines the mapping from a FP condition string - to a condition number which can be recorded in an instruction. */ -struct fp_cond_map - { - char *string; - int cond; - }; - -/* This structure defines a mapping from a field selector - string to a field selector type. */ -struct selector_entry - { - char *prefix; - int field_selector; - }; - -/* Prototypes for functions local to tc-hppa.c. */ - -static void pa_check_current_space_and_subspace PARAMS ((void)); -static fp_operand_format pa_parse_fp_format PARAMS ((char **s)); -static void pa_cons PARAMS ((int)); -static void pa_data PARAMS ((int)); -static void pa_float_cons PARAMS ((int)); -static void pa_fill PARAMS ((int)); -static void pa_lcomm PARAMS ((int)); -static void pa_lsym PARAMS ((int)); -static void pa_stringer PARAMS ((int)); -static void pa_text PARAMS ((int)); -static void pa_version PARAMS ((int)); -static int pa_parse_fp_cmp_cond PARAMS ((char **)); -static int get_expression PARAMS ((char *)); -static int pa_get_absolute_expression PARAMS ((struct pa_it *, char **)); -static int evaluate_absolute PARAMS ((struct pa_it *)); -static unsigned int pa_build_arg_reloc PARAMS ((char *)); -static unsigned int pa_align_arg_reloc PARAMS ((unsigned int, unsigned int)); -static int pa_parse_nullif PARAMS ((char **)); -static int pa_parse_nonneg_cmpsub_cmpltr PARAMS ((char **, int)); -static int pa_parse_neg_cmpsub_cmpltr PARAMS ((char **, int)); -static int pa_parse_neg_add_cmpltr PARAMS ((char **, int)); -static int pa_parse_nonneg_add_cmpltr PARAMS ((char **, int)); -static void pa_align PARAMS ((int)); -static void pa_block PARAMS ((int)); -static void pa_brtab PARAMS ((int)); -static void pa_try PARAMS ((int)); -static void pa_call PARAMS ((int)); -static void pa_call_args PARAMS ((struct call_desc *)); -static void pa_callinfo PARAMS ((int)); -static void pa_code PARAMS ((int)); -static void pa_comm PARAMS ((int)); -#ifdef OBJ_SOM -static void pa_compiler PARAMS ((int)); -#endif -static void pa_copyright PARAMS ((int)); -static void pa_end PARAMS ((int)); -static void pa_enter PARAMS ((int)); -static void pa_entry PARAMS ((int)); -static void pa_equ PARAMS ((int)); -static void pa_exit PARAMS ((int)); -static void pa_export PARAMS ((int)); -static void pa_type_args PARAMS ((symbolS *, int)); -static void pa_import PARAMS ((int)); -static void pa_label PARAMS ((int)); -static void pa_leave PARAMS ((int)); -static void pa_level PARAMS ((int)); -static void pa_origin PARAMS ((int)); -static void pa_proc PARAMS ((int)); -static void pa_procend PARAMS ((int)); -static void pa_space PARAMS ((int)); -static void pa_spnum PARAMS ((int)); -static void pa_subspace PARAMS ((int)); -static void pa_param PARAMS ((int)); -static void pa_undefine_label PARAMS ((void)); -static int need_pa11_opcode PARAMS ((struct pa_it *, - struct pa_11_fp_reg_struct *)); -static int pa_parse_number PARAMS ((char **, struct pa_11_fp_reg_struct *)); -static label_symbol_struct *pa_get_label PARAMS ((void)); -static sd_chain_struct *create_new_space PARAMS ((char *, int, int, - int, int, int, - asection *, int)); -static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *, - char *, int, int, - int, int, int, - int, int, int, int, - int, asection *)); -static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *, - char *, int, int, int, - int, int, int, int, - int, int, int, - asection *)); -static sd_chain_struct *is_defined_space PARAMS ((char *)); -static ssd_chain_struct *is_defined_subspace PARAMS ((char *)); -static sd_chain_struct *pa_segment_to_space PARAMS ((asection *)); -static ssd_chain_struct *pa_subsegment_to_subspace PARAMS ((asection *, - subsegT)); -static sd_chain_struct *pa_find_space_by_number PARAMS ((int)); -static unsigned int pa_subspace_start PARAMS ((sd_chain_struct *, int)); -static void pa_ip PARAMS ((char *)); -static void fix_new_hppa PARAMS ((fragS *, int, int, symbolS *, - long, expressionS *, int, - bfd_reloc_code_real_type, - enum hppa_reloc_field_selector_type_alt, - int, long, int *)); -static int is_end_of_statement PARAMS ((void)); -static int reg_name_search PARAMS ((char *)); -static int pa_chk_field_selector PARAMS ((char **)); -static int is_same_frag PARAMS ((fragS *, fragS *)); -static void process_exit PARAMS ((void)); -static sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int)); -static int log2 PARAMS ((int)); -static int pa_next_subseg PARAMS ((sd_chain_struct *)); -static unsigned int pa_stringer_aux PARAMS ((char *)); -static void pa_spaces_begin PARAMS ((void)); - -#ifdef OBJ_ELF -static void hppa_elf_mark_end_of_function PARAMS ((void)); -static void pa_build_unwind_subspace PARAMS ((struct call_info *)); -#endif - -/* File and gloally scoped variable declarations. */ - -/* Root and final entry in the space chain. */ -static sd_chain_struct *space_dict_root; -static sd_chain_struct *space_dict_last; - -/* The current space and subspace. */ -static sd_chain_struct *current_space; -static ssd_chain_struct *current_subspace; - -/* Root of the call_info chain. */ -static struct call_info *call_info_root; - -/* The last call_info (for functions) structure - seen so it can be associated with fixups and - function labels. */ -static struct call_info *last_call_info; - -/* The last call description (for actual calls). */ -static struct call_desc last_call_desc; - -/* handle of the OPCODE hash table */ -static struct hash_control *op_hash = NULL; - -/* This array holds the chars that always start a comment. If the - pre-processor is disabled, these aren't very useful. */ -const char comment_chars[] = ";"; - -/* Table of pseudo ops for the PA. FIXME -- how many of these - are now redundant with the overall GAS and the object file - dependent tables? */ -const pseudo_typeS md_pseudo_table[] = -{ - /* align pseudo-ops on the PA specify the actual alignment requested, - not the log2 of the requested alignment. */ - {"align", pa_align, 8}, - {"begin_brtab", pa_brtab, 1}, - {"begin_try", pa_try, 1}, - {"block", pa_block, 1}, - {"blockz", pa_block, 0}, - {"byte", pa_cons, 1}, - {"call", pa_call, 0}, - {"callinfo", pa_callinfo, 0}, - {"code", pa_code, 0}, - {"comm", pa_comm, 0}, -#ifdef OBJ_SOM - {"compiler", pa_compiler, 0}, -#endif - {"copyright", pa_copyright, 0}, - {"data", pa_data, 0}, - {"double", pa_float_cons, 'd'}, - {"end", pa_end, 0}, - {"end_brtab", pa_brtab, 0}, - {"end_try", pa_try, 0}, - {"enter", pa_enter, 0}, - {"entry", pa_entry, 0}, - {"equ", pa_equ, 0}, - {"exit", pa_exit, 0}, - {"export", pa_export, 0}, - {"fill", pa_fill, 0}, - {"float", pa_float_cons, 'f'}, - {"half", pa_cons, 2}, - {"import", pa_import, 0}, - {"int", pa_cons, 4}, - {"label", pa_label, 0}, - {"lcomm", pa_lcomm, 0}, - {"leave", pa_leave, 0}, - {"level", pa_level, 0}, - {"long", pa_cons, 4}, - {"lsym", pa_lsym, 0}, - {"nsubspa", pa_subspace, 1}, - {"octa", pa_cons, 16}, - {"org", pa_origin, 0}, - {"origin", pa_origin, 0}, - {"param", pa_param, 0}, - {"proc", pa_proc, 0}, - {"procend", pa_procend, 0}, - {"quad", pa_cons, 8}, - {"reg", pa_equ, 1}, - {"short", pa_cons, 2}, - {"single", pa_float_cons, 'f'}, - {"space", pa_space, 0}, - {"spnum", pa_spnum, 0}, - {"string", pa_stringer, 0}, - {"stringz", pa_stringer, 1}, - {"subspa", pa_subspace, 0}, - {"text", pa_text, 0}, - {"version", pa_version, 0}, - {"word", pa_cons, 4}, - {NULL, 0, 0} -}; - -/* This array holds the chars that only start a comment at the beginning of - a line. If the line seems to have the form '# 123 filename' - .line and .file directives will appear in the pre-processed output. - - Note that input_file.c hand checks for '#' at the beginning of the - first line of the input file. This is because the compiler outputs - #NO_APP at the beginning of its output. - - Also note that C style comments will always work. */ -const char line_comment_chars[] = "#"; - -/* This array holds the characters which act as line separators. */ -const char line_separator_chars[] = "!"; - -/* Chars that can be used to separate mant from exp in floating point nums. */ -const char EXP_CHARS[] = "eE"; - -/* Chars that mean this number is a floating point constant. - As in 0f12.456 or 0d1.2345e12. - - Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be - changed in read.c. Ideally it shouldn't hae to know abou it at - all, but nothing is ideal around here. */ -const char FLT_CHARS[] = "rRsSfFdDxXpP"; - -static struct pa_it the_insn; - -/* Points to the end of an expression just parsed by get_expressoin - and friends. FIXME. This shouldn't be handled with a file-global - variable. */ -static char *expr_end; - -/* Nonzero if a .callinfo appeared within the current procedure. */ -static int callinfo_found; - -/* Nonzero if the assembler is currently within a .entry/.exit pair. */ -static int within_entry_exit; - -/* Nonzero if the assembler is currently within a procedure definition. */ -static int within_procedure; - -/* Handle on strucutre which keep track of the last symbol - seen in each subspace. */ -static label_symbol_struct *label_symbols_rootp = NULL; - -/* Holds the last field selector. */ -static int hppa_field_selector; - -#ifdef OBJ_SOM -/* A dummy bfd symbol so that all relocations have symbols of some kind. */ -static symbolS *dummy_symbol; -#endif - -/* Nonzero if errors are to be printed. */ -static int print_errors = 1; - -/* List of registers that are pre-defined: - - Each general register has one predefined name of the form - %r<REGNUM> which has the value <REGNUM>. - - Space and control registers are handled in a similar manner, - but use %sr<REGNUM> and %cr<REGNUM> as their predefined names. - - Likewise for the floating point registers, but of the form - %fr<REGNUM>. Floating point registers have additional predefined - names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which - again have the value <REGNUM>. - - Many registers also have synonyms: - - %r26 - %r23 have %arg0 - %arg3 as synonyms - %r28 - %r29 have %ret0 - %ret1 as synonyms - %r30 has %sp as a synonym - %r27 has %dp as a synonym - %r2 has %rp as a synonym - - Almost every control register has a synonym; they are not listed - here for brevity. - - The table is sorted. Suitable for searching by a binary search. */ - -static const struct pd_reg pre_defined_registers[] = -{ - {"%arg0", 26}, - {"%arg1", 25}, - {"%arg2", 24}, - {"%arg3", 23}, - {"%cr0", 0}, - {"%cr10", 10}, - {"%cr11", 11}, - {"%cr12", 12}, - {"%cr13", 13}, - {"%cr14", 14}, - {"%cr15", 15}, - {"%cr16", 16}, - {"%cr17", 17}, - {"%cr18", 18}, - {"%cr19", 19}, - {"%cr20", 20}, - {"%cr21", 21}, - {"%cr22", 22}, - {"%cr23", 23}, - {"%cr24", 24}, - {"%cr25", 25}, - {"%cr26", 26}, - {"%cr27", 27}, - {"%cr28", 28}, - {"%cr29", 29}, - {"%cr30", 30}, - {"%cr31", 31}, - {"%cr8", 8}, - {"%cr9", 9}, - {"%dp", 27}, - {"%eiem", 15}, - {"%eirr", 23}, - {"%fr0", 0}, - {"%fr0l", 0}, - {"%fr0r", 0}, - {"%fr1", 1}, - {"%fr10", 10}, - {"%fr10l", 10}, - {"%fr10r", 10}, - {"%fr11", 11}, - {"%fr11l", 11}, - {"%fr11r", 11}, - {"%fr12", 12}, - {"%fr12l", 12}, - {"%fr12r", 12}, - {"%fr13", 13}, - {"%fr13l", 13}, - {"%fr13r", 13}, - {"%fr14", 14}, - {"%fr14l", 14}, - {"%fr14r", 14}, - {"%fr15", 15}, - {"%fr15l", 15}, - {"%fr15r", 15}, - {"%fr16", 16}, - {"%fr16l", 16}, - {"%fr16r", 16}, - {"%fr17", 17}, - {"%fr17l", 17}, - {"%fr17r", 17}, - {"%fr18", 18}, - {"%fr18l", 18}, - {"%fr18r", 18}, - {"%fr19", 19}, - {"%fr19l", 19}, - {"%fr19r", 19}, - {"%fr1l", 1}, - {"%fr1r", 1}, - {"%fr2", 2}, - {"%fr20", 20}, - {"%fr20l", 20}, - {"%fr20r", 20}, - {"%fr21", 21}, - {"%fr21l", 21}, - {"%fr21r", 21}, - {"%fr22", 22}, - {"%fr22l", 22}, - {"%fr22r", 22}, - {"%fr23", 23}, - {"%fr23l", 23}, - {"%fr23r", 23}, - {"%fr24", 24}, - {"%fr24l", 24}, - {"%fr24r", 24}, - {"%fr25", 25}, - {"%fr25l", 25}, - {"%fr25r", 25}, - {"%fr26", 26}, - {"%fr26l", 26}, - {"%fr26r", 26}, - {"%fr27", 27}, - {"%fr27l", 27}, - {"%fr27r", 27}, - {"%fr28", 28}, - {"%fr28l", 28}, - {"%fr28r", 28}, - {"%fr29", 29}, - {"%fr29l", 29}, - {"%fr29r", 29}, - {"%fr2l", 2}, - {"%fr2r", 2}, - {"%fr3", 3}, - {"%fr30", 30}, - {"%fr30l", 30}, - {"%fr30r", 30}, - {"%fr31", 31}, - {"%fr31l", 31}, - {"%fr31r", 31}, - {"%fr3l", 3}, - {"%fr3r", 3}, - {"%fr4", 4}, - {"%fr4l", 4}, - {"%fr4r", 4}, - {"%fr5", 5}, - {"%fr5l", 5}, - {"%fr5r", 5}, - {"%fr6", 6}, - {"%fr6l", 6}, - {"%fr6r", 6}, - {"%fr7", 7}, - {"%fr7l", 7}, - {"%fr7r", 7}, - {"%fr8", 8}, - {"%fr8l", 8}, - {"%fr8r", 8}, - {"%fr9", 9}, - {"%fr9l", 9}, - {"%fr9r", 9}, - {"%hta", 25}, - {"%iir", 19}, - {"%ior", 21}, - {"%ipsw", 22}, - {"%isr", 20}, - {"%itmr", 16}, - {"%iva", 14}, - {"%pcoq", 18}, - {"%pcsq", 17}, - {"%pidr1", 8}, - {"%pidr2", 9}, - {"%pidr3", 12}, - {"%pidr4", 13}, - {"%ppda", 24}, - {"%r0", 0}, - {"%r1", 1}, - {"%r10", 10}, - {"%r11", 11}, - {"%r12", 12}, - {"%r13", 13}, - {"%r14", 14}, - {"%r15", 15}, - {"%r16", 16}, - {"%r17", 17}, - {"%r18", 18}, - {"%r19", 19}, - {"%r2", 2}, - {"%r20", 20}, - {"%r21", 21}, - {"%r22", 22}, - {"%r23", 23}, - {"%r24", 24}, - {"%r25", 25}, - {"%r26", 26}, - {"%r27", 27}, - {"%r28", 28}, - {"%r29", 29}, - {"%r3", 3}, - {"%r30", 30}, - {"%r31", 31}, - {"%r4", 4}, - {"%r5", 5}, - {"%r6", 6}, - {"%r7", 7}, - {"%r8", 8}, - {"%r9", 9}, - {"%rctr", 0}, - {"%ret0", 28}, - {"%ret1", 29}, - {"%rp", 2}, - {"%sar", 11}, - {"%sp", 30}, - {"%sr0", 0}, - {"%sr1", 1}, - {"%sr2", 2}, - {"%sr3", 3}, - {"%sr4", 4}, - {"%sr5", 5}, - {"%sr6", 6}, - {"%sr7", 7}, - {"%tr0", 24}, - {"%tr1", 25}, - {"%tr2", 26}, - {"%tr3", 27}, - {"%tr4", 28}, - {"%tr5", 29}, - {"%tr6", 30}, - {"%tr7", 31} -}; - -/* This table is sorted by order of the length of the string. This is - so we check for <> before we check for <. If we had a <> and checked - for < first, we would get a false match. */ -static const struct fp_cond_map fp_cond_map[] = -{ - {"false?", 0}, - {"false", 1}, - {"true?", 30}, - {"true", 31}, - {"!<=>", 3}, - {"!?>=", 8}, - {"!?<=", 16}, - {"!<>", 7}, - {"!>=", 11}, - {"!?>", 12}, - {"?<=", 14}, - {"!<=", 19}, - {"!?<", 20}, - {"?>=", 22}, - {"!?=", 24}, - {"!=t", 27}, - {"<=>", 29}, - {"=t", 5}, - {"?=", 6}, - {"?<", 10}, - {"<=", 13}, - {"!>", 15}, - {"?>", 18}, - {">=", 21}, - {"!<", 23}, - {"<>", 25}, - {"!=", 26}, - {"!?", 28}, - {"?", 2}, - {"=", 4}, - {"<", 9}, - {">", 17} -}; - -static const struct selector_entry selector_table[] = -{ - {"f", e_fsel}, - {"l", e_lsel}, - {"ld", e_ldsel}, - {"lp", e_lpsel}, - {"lr", e_lrsel}, - {"ls", e_lssel}, - {"lt", e_ltsel}, - {"n", e_nsel}, - {"nl", e_nlsel}, - {"nlr", e_nlrsel}, - {"p", e_psel}, - {"r", e_rsel}, - {"rd", e_rdsel}, - {"rp", e_rpsel}, - {"rr", e_rrsel}, - {"rs", e_rssel}, - {"rt", e_rtsel}, - {"t", e_tsel}, -}; - -/* default space and subspace dictionaries */ - -#define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME -#define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME - -/* pre-defined subsegments (subspaces) for the HPPA. */ -#define SUBSEG_CODE 0 -#define SUBSEG_LIT 1 -#define SUBSEG_MILLI 2 -#define SUBSEG_DATA 0 -#define SUBSEG_BSS 2 -#define SUBSEG_UNWIND 3 -#define SUBSEG_GDB_STRINGS 0 -#define SUBSEG_GDB_SYMBOLS 1 - -static struct default_subspace_dict pa_def_subspaces[] = -{ - {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_CODE}, - {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, ".data", SUBSEG_DATA}, - {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_LIT}, - {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, ".text", SUBSEG_MILLI}, - {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, ".bss", SUBSEG_BSS}, -#ifdef OBJ_ELF - {"$UNWIND$", 1, 1, 0, 0, 0, 0, 64, 0x2c, 0, 4, 0, 0, ".PARISC.unwind", SUBSEG_UNWIND}, -#endif - {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0} -}; - -static struct default_space_dict pa_def_spaces[] = -{ - {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL, ".text"}, - {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL, ".data"}, - {NULL, 0, 0, 0, 0, 0, ASEC_NULL, NULL} -}; - -/* Misc local definitions used by the assembler. */ - -/* Return nonzero if the string pointed to by S potentially represents - a right or left half of a FP register */ -#define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r') -#define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l') - -/* These macros are used to maintain spaces/subspaces. */ -#define SPACE_DEFINED(space_chain) (space_chain)->sd_defined -#define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined -#define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum -#define SPACE_NAME(space_chain) (space_chain)->sd_name - -#define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined -#define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name - -/* Insert FIELD into OPCODE starting at bit START. Continue pa_ip - main loop after insertion. */ - -#define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \ - { \ - ((OPCODE) |= (FIELD) << (START)); \ - continue; \ - } - -/* Simple range checking for FIELD againt HIGH and LOW bounds. - IGNORE is used to suppress the error message. */ - -#define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \ - { \ - if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \ - { \ - if (! IGNORE) \ - as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \ - (int) (FIELD));\ - break; \ - } \ - } - -#define is_DP_relative(exp) \ - ((exp).X_op == O_subtract \ - && strcmp (S_GET_NAME ((exp).X_op_symbol), "$global$") == 0) - -#define is_PC_relative(exp) \ - ((exp).X_op == O_subtract \ - && strcmp (S_GET_NAME ((exp).X_op_symbol), "$PIC_pcrel$0") == 0) - -/* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll - always be able to reduce the expression to a constant, so we don't - need real complex handling yet. */ -#define is_complex(exp) \ - ((exp).X_op != O_constant && (exp).X_op != O_symbol) - -/* Actual functions to implement the PA specific code for the assembler. */ - -/* Called before writing the object file. Make sure entry/exit and - proc/procend pairs match. */ - -void -pa_check_eof () -{ - if (within_entry_exit) - as_fatal (_("Missing .exit\n")); - - if (within_procedure) - as_fatal (_("Missing .procend\n")); -} - -/* Check to make sure we have a valid space and subspace. */ - -static void -pa_check_current_space_and_subspace () -{ - if (current_space == NULL) - as_fatal (_("Not in a space.\n")); - - if (current_subspace == NULL) - as_fatal (_("Not in a subspace.\n")); -} - -/* Returns a pointer to the label_symbol_struct for the current space. - or NULL if no label_symbol_struct exists for the current space. */ - -static label_symbol_struct * -pa_get_label () -{ - label_symbol_struct *label_chain; - sd_chain_struct *space_chain = current_space; - - for (label_chain = label_symbols_rootp; - label_chain; - label_chain = label_chain->lss_next) - if (space_chain == label_chain->lss_space && label_chain->lss_label) - return label_chain; - - return NULL; -} - -/* Defines a label for the current space. If one is already defined, - this function will replace it with the new label. */ - -void -pa_define_label (symbol) - symbolS *symbol; -{ - label_symbol_struct *label_chain = pa_get_label (); - sd_chain_struct *space_chain = current_space; - - if (label_chain) - label_chain->lss_label = symbol; - else - { - /* Create a new label entry and add it to the head of the chain. */ - label_chain - = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct)); - label_chain->lss_label = symbol; - label_chain->lss_space = space_chain; - label_chain->lss_next = NULL; - - if (label_symbols_rootp) - label_chain->lss_next = label_symbols_rootp; - - label_symbols_rootp = label_chain; - } -} - -/* Removes a label definition for the current space. - If there is no label_symbol_struct entry, then no action is taken. */ - -static void -pa_undefine_label () -{ - label_symbol_struct *label_chain; - label_symbol_struct *prev_label_chain = NULL; - sd_chain_struct *space_chain = current_space; - - for (label_chain = label_symbols_rootp; - label_chain; - label_chain = label_chain->lss_next) - { - if (space_chain == label_chain->lss_space && label_chain->lss_label) - { - /* Remove the label from the chain and free its memory. */ - if (prev_label_chain) - prev_label_chain->lss_next = label_chain->lss_next; - else - label_symbols_rootp = label_chain->lss_next; - - free (label_chain); - break; - } - prev_label_chain = label_chain; - } -} - - -/* An HPPA-specific version of fix_new. This is required because the HPPA - code needs to keep track of some extra stuff. Each call to fix_new_hppa - results in the creation of an instance of an hppa_fix_struct. An - hppa_fix_struct stores the extra information along with a pointer to the - original fixS. This is attached to the original fixup via the - tc_fix_data field. */ - -static void -fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel, - r_type, r_field, r_format, arg_reloc, unwind_bits) - fragS *frag; - int where; - int size; - symbolS *add_symbol; - long offset; - expressionS *exp; - int pcrel; - bfd_reloc_code_real_type r_type; - enum hppa_reloc_field_selector_type_alt r_field; - int r_format; - long arg_reloc; - int* unwind_bits; -{ - fixS *new_fix; - - struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *) - obstack_alloc (¬es, sizeof (struct hppa_fix_struct)); - - if (exp != NULL) - new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type); - else - new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type); - new_fix->tc_fix_data = (void *) hppa_fix; - hppa_fix->fx_r_type = r_type; - hppa_fix->fx_r_field = r_field; - hppa_fix->fx_r_format = r_format; - hppa_fix->fx_arg_reloc = arg_reloc; - hppa_fix->segment = now_seg; -#ifdef OBJ_SOM - if (r_type == R_ENTRY || r_type == R_EXIT) - new_fix->fx_offset = *unwind_bits; -#endif - - /* foo-$global$ is used to access non-automatic storage. $global$ - is really just a marker and has served its purpose, so eliminate - it now so as not to confuse write.c. */ - if (new_fix->fx_subsy - && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$")) - new_fix->fx_subsy = NULL; -} - -/* Parse a .byte, .word, .long expression for the HPPA. Called by - cons via the TC_PARSE_CONS_EXPRESSION macro. */ - -void -parse_cons_expression_hppa (exp) - expressionS *exp; -{ - hppa_field_selector = pa_chk_field_selector (&input_line_pointer); - expression (exp); -} - -/* This fix_new is called by cons via TC_CONS_FIX_NEW. - hppa_field_selector is set by the parse_cons_expression_hppa. */ - -void -cons_fix_new_hppa (frag, where, size, exp) - fragS *frag; - int where; - int size; - expressionS *exp; -{ - unsigned int rel_type; - - /* Get a base relocation type. */ - if (is_DP_relative (*exp)) - rel_type = R_HPPA_GOTOFF; - else if (is_complex (*exp)) - rel_type = R_HPPA_COMPLEX; - else - rel_type = R_HPPA; - - if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel) - as_warn (_("Invalid field selector. Assuming F%%.")); - - fix_new_hppa (frag, where, size, - (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type, - hppa_field_selector, 32, 0, NULL); - - /* Reset field selector to its default state. */ - hppa_field_selector = 0; -} - -/* This function is called once, at assembler startup time. It should - set up all the tables, etc. that the MD part of the assembler will need. */ - -void -md_begin () -{ - const char *retval = NULL; - int lose = 0; - unsigned int i = 0; - - last_call_info = NULL; - call_info_root = NULL; - - /* Set the default machine type. */ - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10)) - as_warn (_("could not set architecture and machine")); - - /* Folding of text and data segments fails miserably on the PA. - Warn user and disable "-R" option. */ - if (flag_readonly_data_in_text) - { - as_warn (_("-R option not supported on this target.")); - flag_readonly_data_in_text = 0; - } - - pa_spaces_begin (); - - op_hash = hash_new (); - - while (i < NUMOPCODES) - { - const char *name = pa_opcodes[i].name; - retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]); - if (retval != NULL && *retval != '\0') - { - as_fatal (_("Internal error: can't hash `%s': %s\n"), name, retval); - lose = 1; - } - do - { - if ((pa_opcodes[i].match & pa_opcodes[i].mask) - != pa_opcodes[i].match) - { - fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"), - pa_opcodes[i].name, pa_opcodes[i].args); - lose = 1; - } - ++i; - } - while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name)); - } - - if (lose) - as_fatal (_("Broken assembler. No assembly attempted.")); - - /* SOM will change text_section. To make sure we never put - anything into the old one switch to the new one now. */ - subseg_set (text_section, 0); - -#ifdef OBJ_SOM - dummy_symbol = symbol_find_or_make ("L$dummy"); - S_SET_SEGMENT (dummy_symbol, text_section); - /* Force the symbol to be converted to a real symbol. */ - (void) symbol_get_bfdsym (dummy_symbol); -#endif -} - -/* Assemble a single instruction storing it into a frag. */ -void -md_assemble (str) - char *str; -{ - char *to; - - /* The had better be something to assemble. */ - assert (str); - - /* If we are within a procedure definition, make sure we've - defined a label for the procedure; handle case where the - label was defined after the .PROC directive. - - Note there's not need to diddle with the segment or fragment - for the label symbol in this case. We have already switched - into the new $CODE$ subspace at this point. */ - if (within_procedure && last_call_info->start_symbol == NULL) - { - label_symbol_struct *label_symbol = pa_get_label (); - - if (label_symbol) - { - if (label_symbol->lss_label) - { - last_call_info->start_symbol = label_symbol->lss_label; - symbol_get_bfdsym (label_symbol->lss_label)->flags - |= BSF_FUNCTION; -#ifdef OBJ_SOM - /* Also handle allocation of a fixup to hold the unwind - information when the label appears after the proc/procend. */ - if (within_entry_exit) - { - char *where = frag_more (0); - - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, NULL, - 0, R_HPPA_ENTRY, e_fsel, 0, 0, - (int *)&last_call_info->ci_unwind.descriptor); - } -#endif - } - else - as_bad (_("Missing function name for .PROC (corrupted label chain)")); - } - else - as_bad (_("Missing function name for .PROC")); - } - - /* Assemble the instruction. Results are saved into "the_insn". */ - pa_ip (str); - - /* Get somewhere to put the assembled instrution. */ - to = frag_more (4); - - /* Output the opcode. */ - md_number_to_chars (to, the_insn.opcode, 4); - - /* If necessary output more stuff. */ - if (the_insn.reloc != R_HPPA_NONE) - fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL, - (offsetT) 0, &the_insn.exp, the_insn.pcrel, - the_insn.reloc, the_insn.field_selector, - the_insn.format, the_insn.arg_reloc, NULL); -} - -/* Do the real work for assembling a single instruction. Store results - into the global "the_insn" variable. */ - -static void -pa_ip (str) - char *str; -{ - char *error_message = ""; - char *s, c, *argstart, *name, *save_s; - const char *args; - int match = FALSE; - int comma = 0; - int cmpltr, nullif, flag, cond, num; - unsigned long opcode; - struct pa_opcode *insn; - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - /* Skip to something interesting. */ - for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s) - ; - - switch (*s) - { - - case '\0': - break; - - case ',': - comma = 1; - - /*FALLTHROUGH */ - - case ' ': - *s++ = '\0'; - break; - - default: - as_fatal (_("Unknown opcode: `%s'"), str); - } - - save_s = str; - - /* Convert everything into lower case. */ - while (*save_s) - { - if (isupper (*save_s)) - *save_s = tolower (*save_s); - save_s++; - } - - /* Look up the opcode in the has table. */ - if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL) - { - as_bad ("Unknown opcode: `%s'", str); - return; - } - - if (comma) - { - *--s = ','; - } - - /* Mark the location where arguments for the instruction start, then - start processing them. */ - argstart = s; - for (;;) - { - /* Do some initialization. */ - opcode = insn->match; - memset (&the_insn, 0, sizeof (the_insn)); - - the_insn.reloc = R_HPPA_NONE; - - /* If this instruction is specific to a particular architecture, - then set a new architecture. */ - /* But do not automatically promote to pa2.0. The automatic promotion - crud is for compatability with HP's old assemblers only. */ - if (insn->arch < 20 - && bfd_get_mach (stdoutput) < insn->arch) - { - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, insn->arch)) - as_warn (_("could not update architecture and machine")); - } - else if (bfd_get_mach (stdoutput) < insn->arch) - { - match = FALSE; - goto failed; - } - - /* Build the opcode, checking as we go to make - sure that the operands match. */ - for (args = insn->args;; ++args) - { - switch (*args) - { - - /* End of arguments. */ - case '\0': - if (*s == '\0') - match = TRUE; - break; - - case '+': - if (*s == '+') - { - ++s; - continue; - } - if (*s == '-') - continue; - break; - - /* These must match exactly. */ - case '(': - case ')': - case ',': - case ' ': - if (*s++ == *args) - continue; - break; - - /* Handle a 5 bit register or control register field at 10. */ - case 'b': - case '^': - num = pa_parse_number (&s, 0); - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 21); - - /* Handle a 5 bit register field at 15. */ - case 'x': - num = pa_parse_number (&s, 0); - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 16); - - /* Handle a 5 bit register field at 31. */ - case 'y': - case 't': - num = pa_parse_number (&s, 0); - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle a 5 bit field length at 31. */ - case 'T': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 32, 1, 0); - INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0); - - /* Handle a 5 bit immediate at 15. */ - case '5': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 15, -16, 0); - low_sign_unext (num, 5, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 16); - - /* Handle a 5 bit immediate at 31. */ - case 'V': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 15, -16, 0) - low_sign_unext (num, 5, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle an unsigned 5 bit immediate at 31. */ - case 'r': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle an unsigned 5 bit immediate at 15. */ - case 'R': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 16); - - /* Handle a 2 bit space identifier at 17. */ - case 's': - num = pa_parse_number (&s, 0); - CHECK_FIELD (num, 3, 0, 1); - INSERT_FIELD_AND_CONTINUE (opcode, num, 14); - - /* Handle a 3 bit space identifier at 18. */ - case 'S': - num = pa_parse_number (&s, 0); - CHECK_FIELD (num, 7, 0, 1); - dis_assemble_3 (num, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 13); - - /* Handle a completer for an indexing load or store. */ - case 'c': - { - int uu = 0; - int m = 0; - int i = 0; - while (*s == ',' && i < 2) - { - s++; - if (strncasecmp (s, "sm", 2) == 0) - { - uu = 1; - m = 1; - s++; - i++; - } - else if (strncasecmp (s, "m", 1) == 0) - m = 1; - else if (strncasecmp (s, "s", 1) == 0) - uu = 1; - else - as_bad (_("Invalid Indexed Load Completer.")); - s++; - i++; - } - if (i > 2) - as_bad (_("Invalid Indexed Load Completer Syntax.")); - opcode |= m << 5; - INSERT_FIELD_AND_CONTINUE (opcode, uu, 13); - } - - /* Handle a short load/store completer. */ - case 'C': - { - int a = 0; - int m = 0; - if (*s == ',') - { - s++; - if (strncasecmp (s, "ma", 2) == 0) - { - a = 0; - m = 1; - } - else if (strncasecmp (s, "mb", 2) == 0) - { - a = 1; - m = 1; - } - else - as_bad (_("Invalid Short Load/Store Completer.")); - s += 2; - } - - if (*args == 'C') - { - opcode |= m << 5; - INSERT_FIELD_AND_CONTINUE (opcode, a, 13); - } - } - - /* Handle a stbys completer. */ - case 'Y': - { - int a = 0; - int m = 0; - int i = 0; - while (*s == ',' && i < 2) - { - s++; - if (strncasecmp (s, "m", 1) == 0) - m = 1; - else if (strncasecmp (s, "b", 1) == 0) - a = 0; - else if (strncasecmp (s, "e", 1) == 0) - a = 1; - else - as_bad (_("Invalid Store Bytes Short Completer")); - s++; - i++; - } - if (i > 2) - as_bad (_("Invalid Store Bytes Short Completer")); - opcode |= m << 5; - INSERT_FIELD_AND_CONTINUE (opcode, a, 13); - } - - /* Handle a non-negated compare/stubtract condition. */ - case '<': - cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1); - if (cmpltr < 0) - { - as_bad (_("Invalid Compare/Subtract Condition: %c"), *s); - cmpltr = 0; - } - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); - - /* Handle a negated or non-negated compare/subtract condition. */ - case '?': - save_s = s; - cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1); - if (cmpltr < 0) - { - s = save_s; - cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1); - if (cmpltr < 0) - { - as_bad (_("Invalid Compare/Subtract Condition.")); - cmpltr = 0; - } - else - { - /* Negated condition requires an opcode change. */ - opcode |= 1 << 27; - } - } - - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); - - /* Handle non-negated add condition. */ - case '!': - cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1); - if (cmpltr < 0) - { - as_bad (_("Invalid Compare/Subtract Condition: %c"), *s); - cmpltr = 0; - } - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); - - /* Handle a negated or non-negated add condition. */ - case '@': - save_s = s; - cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1); - if (cmpltr < 0) - { - s = save_s; - cmpltr = pa_parse_neg_add_cmpltr (&s, 1); - if (cmpltr < 0) - { - as_bad (_("Invalid Compare/Subtract Condition")); - cmpltr = 0; - } - else - { - /* Negated condition requires an opcode change. */ - opcode |= 1 << 27; - } - } - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); - - /* Handle a compare/subtract condition. */ - case 'a': - cmpltr = 0; - flag = 0; - if (*s == ',') - { - s++; - name = s; - while (*s != ',' && *s != ' ' && *s != '\t') - s += 1; - c = *s; - *s = 0x00; - if (strcmp (name, "=") == 0) - cmpltr = 1; - else if (strcmp (name, "<") == 0) - cmpltr = 2; - else if (strcmp (name, "<=") == 0) - cmpltr = 3; - else if (strcasecmp (name, "<<") == 0) - cmpltr = 4; - else if (strcasecmp (name, "<<=") == 0) - cmpltr = 5; - else if (strcasecmp (name, "sv") == 0) - cmpltr = 6; - else if (strcasecmp (name, "od") == 0) - cmpltr = 7; - else if (strcasecmp (name, "tr") == 0) - { - cmpltr = 0; - flag = 1; - } - else if (strcmp (name, "<>") == 0) - { - cmpltr = 1; - flag = 1; - } - else if (strcmp (name, ">=") == 0) - { - cmpltr = 2; - flag = 1; - } - else if (strcmp (name, ">") == 0) - { - cmpltr = 3; - flag = 1; - } - else if (strcasecmp (name, ">>=") == 0) - { - cmpltr = 4; - flag = 1; - } - else if (strcasecmp (name, ">>") == 0) - { - cmpltr = 5; - flag = 1; - } - else if (strcasecmp (name, "nsv") == 0) - { - cmpltr = 6; - flag = 1; - } - else if (strcasecmp (name, "ev") == 0) - { - cmpltr = 7; - flag = 1; - } - else - as_bad (_("Invalid Add Condition: %s"), name); - *s = c; - } - opcode |= cmpltr << 13; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); - - /* Handle a non-negated add condition. */ - case 'd': - cmpltr = 0; - flag = 0; - if (*s == ',') - { - s++; - name = s; - while (*s != ',' && *s != ' ' && *s != '\t') - s += 1; - c = *s; - *s = 0x00; - if (strcmp (name, "=") == 0) - cmpltr = 1; - else if (strcmp (name, "<") == 0) - cmpltr = 2; - else if (strcmp (name, "<=") == 0) - cmpltr = 3; - else if (strcasecmp (name, "nuv") == 0) - cmpltr = 4; - else if (strcasecmp (name, "znv") == 0) - cmpltr = 5; - else if (strcasecmp (name, "sv") == 0) - cmpltr = 6; - else if (strcasecmp (name, "od") == 0) - cmpltr = 7; - else if (strcasecmp (name, "tr") == 0) - { - cmpltr = 0; - flag = 1; - } - else if (strcmp (name, "<>") == 0) - { - cmpltr = 1; - flag = 1; - } - else if (strcmp (name, ">=") == 0) - { - cmpltr = 2; - flag = 1; - } - else if (strcmp (name, ">") == 0) - { - cmpltr = 3; - flag = 1; - } - else if (strcasecmp (name, "uv") == 0) - { - cmpltr = 4; - flag = 1; - } - else if (strcasecmp (name, "vnz") == 0) - { - cmpltr = 5; - flag = 1; - } - else if (strcasecmp (name, "nsv") == 0) - { - cmpltr = 6; - flag = 1; - } - else if (strcasecmp (name, "ev") == 0) - { - cmpltr = 7; - flag = 1; - } - else - as_bad (_("Invalid Add Condition: %s"), name); - *s = c; - } - opcode |= cmpltr << 13; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); - - /* HANDLE a logical instruction condition. */ - case '&': - cmpltr = 0; - flag = 0; - if (*s == ',') - { - s++; - name = s; - while (*s != ',' && *s != ' ' && *s != '\t') - s += 1; - c = *s; - *s = 0x00; - - - if (strcmp (name, "=") == 0) - cmpltr = 1; - else if (strcmp (name, "<") == 0) - cmpltr = 2; - else if (strcmp (name, "<=") == 0) - cmpltr = 3; - else if (strcasecmp (name, "od") == 0) - cmpltr = 7; - else if (strcasecmp (name, "tr") == 0) - { - cmpltr = 0; - flag = 1; - } - else if (strcmp (name, "<>") == 0) - { - cmpltr = 1; - flag = 1; - } - else if (strcmp (name, ">=") == 0) - { - cmpltr = 2; - flag = 1; - } - else if (strcmp (name, ">") == 0) - { - cmpltr = 3; - flag = 1; - } - else if (strcasecmp (name, "ev") == 0) - { - cmpltr = 7; - flag = 1; - } - else - as_bad (_("Invalid Logical Instruction Condition.")); - *s = c; - } - opcode |= cmpltr << 13; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); - - /* Handle a unit instruction condition. */ - case 'U': - cmpltr = 0; - flag = 0; - if (*s == ',') - { - s++; - - - if (strncasecmp (s, "sbz", 3) == 0) - { - cmpltr = 2; - s += 3; - } - else if (strncasecmp (s, "shz", 3) == 0) - { - cmpltr = 3; - s += 3; - } - else if (strncasecmp (s, "sdc", 3) == 0) - { - cmpltr = 4; - s += 3; - } - else if (strncasecmp (s, "sbc", 3) == 0) - { - cmpltr = 6; - s += 3; - } - else if (strncasecmp (s, "shc", 3) == 0) - { - cmpltr = 7; - s += 3; - } - else if (strncasecmp (s, "tr", 2) == 0) - { - cmpltr = 0; - flag = 1; - s += 2; - } - else if (strncasecmp (s, "nbz", 3) == 0) - { - cmpltr = 2; - flag = 1; - s += 3; - } - else if (strncasecmp (s, "nhz", 3) == 0) - { - cmpltr = 3; - flag = 1; - s += 3; - } - else if (strncasecmp (s, "ndc", 3) == 0) - { - cmpltr = 4; - flag = 1; - s += 3; - } - else if (strncasecmp (s, "nbc", 3) == 0) - { - cmpltr = 6; - flag = 1; - s += 3; - } - else if (strncasecmp (s, "nhc", 3) == 0) - { - cmpltr = 7; - flag = 1; - s += 3; - } - else - as_bad (_("Invalid Logical Instruction Condition.")); - } - opcode |= cmpltr << 13; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); - - /* Handle a shift/extract/deposit condition. */ - case '|': - case '>': - cmpltr = 0; - if (*s == ',') - { - save_s = s++; - - - name = s; - while (*s != ',' && *s != ' ' && *s != '\t') - s += 1; - c = *s; - *s = 0x00; - if (strcmp (name, "=") == 0) - cmpltr = 1; - else if (strcmp (name, "<") == 0) - cmpltr = 2; - else if (strcasecmp (name, "od") == 0) - cmpltr = 3; - else if (strcasecmp (name, "tr") == 0) - cmpltr = 4; - else if (strcmp (name, "<>") == 0) - cmpltr = 5; - else if (strcmp (name, ">=") == 0) - cmpltr = 6; - else if (strcasecmp (name, "ev") == 0) - cmpltr = 7; - /* Handle movb,n. Put things back the way they were. - This includes moving s back to where it started. */ - else if (strcasecmp (name, "n") == 0 && *args == '|') - { - *s = c; - s = save_s; - continue; - } - else - as_bad (_("Invalid Shift/Extract/Deposit Condition.")); - *s = c; - } - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); - - /* Handle bvb and bb conditions. */ - case '~': - cmpltr = 0; - if (*s == ',') - { - s++; - if (strncmp (s, "<", 1) == 0) - { - cmpltr = 0; - s++; - } - else if (strncmp (s, ">=", 2) == 0) - { - cmpltr = 1; - s += 2; - } - else - as_bad (_("Invalid Bit Branch Condition: %c"), *s); - } - INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15); - - /* Handle a system control completer. */ - case 'Z': - if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M')) - { - flag = 1; - s += 2; - } - else - flag = 0; - - INSERT_FIELD_AND_CONTINUE (opcode, flag, 5); - - /* Handle a nullification completer for branch instructions. */ - case 'n': - nullif = pa_parse_nullif (&s); - INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1); - - /* Handle a nullification completer for copr and spop insns. */ - case 'N': - nullif = pa_parse_nullif (&s); - INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5); - - - /* Handle a 11 bit immediate at 31. */ - case 'i': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - if (the_insn.exp.X_op == O_constant) - { - num = evaluate_absolute (&the_insn); - CHECK_FIELD (num, 1023, -1024, 0); - low_sign_unext (num, 11, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - } - else - { - if (is_DP_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_GOTOFF; - else if (is_PC_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_PCREL_CALL; - else - the_insn.reloc = R_HPPA; - the_insn.format = 11; - continue; - } - - - /* Handle a 14 bit immediate at 31. */ - case 'j': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - if (the_insn.exp.X_op == O_constant) - { - num = evaluate_absolute (&the_insn); - CHECK_FIELD (num, 8191, -8192, 0); - low_sign_unext (num, 14, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - } - else - { - if (is_DP_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_GOTOFF; - else if (is_PC_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_PCREL_CALL; - else - the_insn.reloc = R_HPPA; - the_insn.format = 14; - continue; - } - - /* Handle a 21 bit immediate at 31. */ - case 'k': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - if (the_insn.exp.X_op == O_constant) - { - num = evaluate_absolute (&the_insn); - CHECK_FIELD (num >> 11, 1048575, -1048576, 0); - dis_assemble_21 (num, &num); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - } - else - { - if (is_DP_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_GOTOFF; - else if (is_PC_relative (the_insn.exp)) - the_insn.reloc = R_HPPA_PCREL_CALL; - else - the_insn.reloc = R_HPPA; - the_insn.format = 21; - continue; - } - - /* Handle a 12 bit branch displacement. */ - case 'w': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - the_insn.pcrel = 1; - if (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001")) - { - unsigned int w1, w, result; - - num = evaluate_absolute (&the_insn); - if (num % 4) - { - as_bad (_("Branch to unaligned address")); - break; - } - CHECK_FIELD (num, 8199, -8184, 0); - sign_unext ((num - 8) >> 2, 12, &result); - dis_assemble_12 (result, &w1, &w); - INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0); - } - else - { - the_insn.reloc = R_HPPA_PCREL_CALL; - the_insn.format = 12; - the_insn.arg_reloc = last_call_desc.arg_reloc; - memset (&last_call_desc, 0, sizeof (struct call_desc)); - s = expr_end; - continue; - } - - /* Handle a 17 bit branch displacement. */ - case 'W': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - the_insn.pcrel = 1; - if (!the_insn.exp.X_add_symbol - || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), - "L$0\001")) - { - unsigned int w2, w1, w, result; - - num = evaluate_absolute (&the_insn); - if (num % 4) - { - as_bad (_("Branch to unaligned address")); - break; - } - CHECK_FIELD (num, 262143, -262144, 0); - - if (the_insn.exp.X_add_symbol) - num -= 8; - - sign_unext (num >> 2, 17, &result); - dis_assemble_17 (result, &w1, &w2, &w); - INSERT_FIELD_AND_CONTINUE (opcode, - ((w2 << 2) | (w1 << 16) | w), 0); - } - else - { - the_insn.reloc = R_HPPA_PCREL_CALL; - the_insn.format = 17; - the_insn.arg_reloc = last_call_desc.arg_reloc; - memset (&last_call_desc, 0, sizeof (struct call_desc)); - continue; - } - - /* Handle an absolute 17 bit branch target. */ - case 'z': - the_insn.field_selector = pa_chk_field_selector (&s); - get_expression (s); - s = expr_end; - the_insn.pcrel = 0; - if (!the_insn.exp.X_add_symbol - || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), - "L$0\001")) - { - unsigned int w2, w1, w, result; - - num = evaluate_absolute (&the_insn); - if (num % 4) - { - as_bad (_("Branch to unaligned address")); - break; - } - CHECK_FIELD (num, 262143, -262144, 0); - - if (the_insn.exp.X_add_symbol) - num -= 8; - - sign_unext (num >> 2, 17, &result); - dis_assemble_17 (result, &w1, &w2, &w); - INSERT_FIELD_AND_CONTINUE (opcode, - ((w2 << 2) | (w1 << 16) | w), 0); - } - else - { - the_insn.reloc = R_HPPA_ABS_CALL; - the_insn.format = 17; - the_insn.arg_reloc = last_call_desc.arg_reloc; - memset (&last_call_desc, 0, sizeof (struct call_desc)); - continue; - } - - /* Handle a 5 bit shift count at 26. */ - case 'p': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5); - - /* Handle a 5 bit bit position at 26. */ - case 'P': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 5); - - /* Handle a 5 bit immediate at 10. */ - case 'Q': - - num = pa_get_absolute_expression (&the_insn, &s); - if (the_insn.exp.X_op != O_constant) - break; - s = expr_end; - CHECK_FIELD (num, 31, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 21); - - /* Handle a 13 bit immediate at 18. */ - case 'A': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 8191, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 13); - - /* Handle a 26 bit immediate at 31. */ - case 'D': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 671108864, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle a 3 bit SFU identifier at 25. */ - case 'f': - if (*s++ != ',') - as_bad (_("Invalid SFU identifier")); - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 7, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 6); - - /* Handle a 20 bit SOP field for spop0. */ - case 'O': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 1048575, 0, 0); - num = (num & 0x1f) | ((num & 0x000fffe0) << 6); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle a 15bit SOP field for spop1. */ - case 'o': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 32767, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 11); - - /* Handle a 10bit SOP field for spop3. */ - case '0': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 1023, 0, 0); - num = (num & 0x1f) | ((num & 0x000003e0) << 6); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle a 15 bit SOP field for spop2. */ - case '1': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 32767, 0, 0); - num = (num & 0x1f) | ((num & 0x00007fe0) << 6); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - /* Handle a 3-bit co-processor ID field. */ - case 'u': - if (*s++ != ',') - as_bad (_("Invalid COPR identifier")); - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 7, 0, 0); - INSERT_FIELD_AND_CONTINUE (opcode, num, 6); - - /* Handle a 22bit SOP field for copr. */ - case '2': - num = pa_get_absolute_expression (&the_insn, &s); - s = expr_end; - CHECK_FIELD (num, 4194303, 0, 0); - num = (num & 0x1f) | ((num & 0x003fffe0) << 4); - INSERT_FIELD_AND_CONTINUE (opcode, num, 0); - - - /* Handle a source FP operand format completer. */ - case 'F': - flag = pa_parse_fp_format (&s); - the_insn.fpof1 = flag; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); - - /* Handle a destination FP operand format completer. */ - case 'G': - /* pa_parse_format needs the ',' prefix. */ - s--; - flag = pa_parse_fp_format (&s); - the_insn.fpof2 = flag; - INSERT_FIELD_AND_CONTINUE (opcode, flag, 13); - - /* Handle FP compare conditions. */ - case 'M': - cond = pa_parse_fp_cmp_cond (&s); - INSERT_FIELD_AND_CONTINUE (opcode, cond, 0); - - /* Handle L/R register halves like 't'. */ - case 'v': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - opcode |= result.number_part; - - /* 0x30 opcodes are FP arithmetic operation opcodes - and need to be turned into 0x38 opcodes. This - is not necessary for loads/stores. */ - if (need_pa11_opcode (&the_insn, &result) - && ((opcode & 0xfc000000) == 0x30000000)) - opcode |= 1 << 27; - - INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6); - } - - /* Handle L/R register halves like 'b'. */ - case 'E': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - opcode |= result.number_part << 21; - if (need_pa11_opcode (&the_insn, &result)) - { - opcode |= (result.l_r_select & 1) << 7; - opcode |= 1 << 27; - } - continue; - } - - /* Handle L/R register halves like 'b'. */ - case '3': - { - struct pa_11_fp_reg_struct result; - int regnum; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - opcode |= (result.number_part & 0x1c) << 11; - opcode |= (result.number_part & 0x3) << 9; - opcode |= (result.l_r_select & 1) << 8; - continue; - } - - /* Handle L/R register halves like 'x'. */ - case 'e': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - opcode |= (result.number_part & 0x1f) << 16; - if (need_pa11_opcode (&the_insn, &result)) - { - opcode |= (result.l_r_select & 1) << 1; - } - continue; - } - - /* Handle L/R register halves like 'x'. */ - case 'X': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - opcode |= (result.number_part & 0x1f) << 16; - if (need_pa11_opcode (&the_insn, &result)) - { - opcode |= (result.l_r_select & 1) << 12; - opcode |= 1 << 27; - } - continue; - } - - /* Handle a 5 bit register field at 10. */ - case '4': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - if (the_insn.fpof1 == SGL) - { - if (result.number_part < 16) - { - as_bad (_("Invalid register for single precision fmpyadd or fmpysub")); - break; - } - - result.number_part &= 0xF; - result.number_part |= (result.l_r_select & 1) << 4; - } - INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21); - } - - /* Handle a 5 bit register field at 15. */ - case '6': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - if (the_insn.fpof1 == SGL) - { - if (result.number_part < 16) - { - as_bad (_("Invalid register for single precision fmpyadd or fmpysub")); - break; - } - result.number_part &= 0xF; - result.number_part |= (result.l_r_select & 1) << 4; - } - INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16); - } - - /* Handle a 5 bit register field at 31. */ - case '7': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - if (the_insn.fpof1 == SGL) - { - if (result.number_part < 16) - { - as_bad (_("Invalid register for single precision fmpyadd or fmpysub")); - break; - } - result.number_part &= 0xF; - result.number_part |= (result.l_r_select & 1) << 4; - } - INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0); - } - - /* Handle a 5 bit register field at 20. */ - case '8': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - if (the_insn.fpof1 == SGL) - { - if (result.number_part < 16) - { - as_bad (_("Invalid register for single precision fmpyadd or fmpysub")); - break; - } - result.number_part &= 0xF; - result.number_part |= (result.l_r_select & 1) << 4; - } - INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11); - } - - /* Handle a 5 bit register field at 25. */ - case '9': - { - struct pa_11_fp_reg_struct result; - - pa_parse_number (&s, &result); - CHECK_FIELD (result.number_part, 31, 0, 0); - if (the_insn.fpof1 == SGL) - { - if (result.number_part < 16) - { - as_bad (_("Invalid register for single precision fmpyadd or fmpysub")); - break; - } - result.number_part &= 0xF; - result.number_part |= (result.l_r_select & 1) << 4; - } - INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6); - } - - /* Handle a floating point operand format at 26. - Only allows single and double precision. */ - case 'H': - flag = pa_parse_fp_format (&s); - switch (flag) - { - case SGL: - opcode |= 0x20; - case DBL: - the_insn.fpof1 = flag; - continue; - - case QUAD: - case ILLEGAL_FMT: - default: - as_bad (_("Invalid Floating Point Operand Format.")); - } - break; - - default: - abort (); - } - break; - } - - failed: - /* Check if the args matched. */ - if (match == FALSE) - { - if (&insn[1] - pa_opcodes < (int) NUMOPCODES - && !strcmp (insn->name, insn[1].name)) - { - ++insn; - s = argstart; - continue; - } - else - { - as_bad (_("Invalid operands %s"), error_message); - return; - } - } - break; - } - - the_insn.opcode = opcode; -} - -/* Turn a string in input_line_pointer into a floating point constant of type - type, and store the appropriate bytes in *litP. The number of LITTLENUMS - emitted is stored in *sizeP . An error message or NULL is returned. */ - -#define MAX_LITTLENUMS 6 - -char * -md_atof (type, litP, sizeP) - char type; - char *litP; - int *sizeP; -{ - int prec; - LITTLENUM_TYPE words[MAX_LITTLENUMS]; - LITTLENUM_TYPE *wordP; - char *t; - - switch (type) - { - - case 'f': - case 'F': - case 's': - case 'S': - prec = 2; - break; - - case 'd': - case 'D': - case 'r': - case 'R': - prec = 4; - break; - - case 'x': - case 'X': - prec = 6; - break; - - case 'p': - case 'P': - prec = 6; - break; - - default: - *sizeP = 0; - return _("Bad call to MD_ATOF()"); - } - t = atof_ieee (input_line_pointer, type, words); - if (t) - input_line_pointer = t; - *sizeP = prec * sizeof (LITTLENUM_TYPE); - for (wordP = words; prec--;) - { - md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE)); - litP += sizeof (LITTLENUM_TYPE); - } - return NULL; -} - -/* Write out big-endian. */ - -void -md_number_to_chars (buf, val, n) - char *buf; - valueT val; - int n; -{ - number_to_chars_bigendian (buf, val, n); -} - -/* Translate internal representation of relocation info to BFD target - format. */ - -arelent ** -tc_gen_reloc (section, fixp) - asection *section; - fixS *fixp; -{ - arelent *reloc; - struct hppa_fix_struct *hppa_fixp; - bfd_reloc_code_real_type code; - static arelent *no_relocs = NULL; - arelent **relocs; - bfd_reloc_code_real_type **codes; - int n_relocs; - int i; - - hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data; - if (fixp->fx_addsy == 0) - return &no_relocs; - assert (hppa_fixp != 0); - assert (section != 0); - - reloc = (arelent *) xmalloc (sizeof (arelent)); - - reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput, - fixp->fx_r_type, - hppa_fixp->fx_r_format, - hppa_fixp->fx_r_field, - fixp->fx_subsy != NULL, - symbol_get_bfdsym (fixp->fx_addsy)); - - if (codes == NULL) - abort (); - - for (n_relocs = 0; codes[n_relocs]; n_relocs++) - ; - - relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1); - reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs); - for (i = 0; i < n_relocs; i++) - relocs[i] = &reloc[i]; - - relocs[n_relocs] = NULL; - -#ifdef OBJ_ELF - switch (fixp->fx_r_type) - { - default: - assert (n_relocs == 1); - - code = *codes[0]; - - reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - reloc->howto = bfd_reloc_type_lookup (stdoutput, code); - reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; - reloc->addend = 0; /* default */ - - assert (reloc->howto && code == reloc->howto->type); - - /* Now, do any processing that is dependent on the relocation type. */ - switch (code) - { - case R_PARISC_DLTREL21L: - case R_PARISC_DLTREL14R: - case R_PARISC_DLTREL14F: - case R_PARISC_PLABEL32: - case R_PARISC_PLABEL21L: - case R_PARISC_PLABEL14R: - /* For plabel relocations, the addend of the - relocation should be either 0 (no static link) or 2 - (static link required). - - FIXME: We always assume no static link! - - We also slam a zero addend into the DLT relative relocs; - it doesn't make a lot of sense to use any addend since - it gets you a different (eg unknown) DLT entry. */ - reloc->addend = 0; - break; - - case R_PARISC_PCREL21L: - case R_PARISC_PCREL17R: - case R_PARISC_PCREL17F: - case R_PARISC_PCREL17C: - case R_PARISC_PCREL14R: - case R_PARISC_PCREL14F: - /* The constant is stored in the instruction. */ - reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0); - break; - default: - reloc->addend = fixp->fx_offset; - break; - } - break; - } -#else /* OBJ_SOM */ - - /* Walk over reach relocation returned by the BFD backend. */ - for (i = 0; i < n_relocs; i++) - { - code = *codes[i]; - - relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code); - relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where; - - switch (code) - { - case R_COMP2: - /* The only time we ever use a R_COMP2 fixup is for the difference - of two symbols. With that in mind we fill in all four - relocs now and break out of the loop. */ - assert (i == 1); - relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol); - relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]); - relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where; - relocs[0]->addend = 0; - relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]); - relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; - relocs[1]->addend = 0; - relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); - relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]); - relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; - relocs[2]->addend = 0; - relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol); - relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]); - relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; - relocs[3]->addend = 0; - relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol); - relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]); - relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where; - relocs[4]->addend = 0; - goto done; - case R_PCREL_CALL: - case R_ABS_CALL: - relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0); - break; - - case R_DLT_REL: - case R_DATA_PLABEL: - case R_CODE_PLABEL: - /* For plabel relocations, the addend of the - relocation should be either 0 (no static link) or 2 - (static link required). - - FIXME: We always assume no static link! - - We also slam a zero addend into the DLT relative relocs; - it doesn't make a lot of sense to use any addend since - it gets you a different (eg unknown) DLT entry. */ - relocs[i]->addend = 0; - break; - - case R_N_MODE: - case R_S_MODE: - case R_D_MODE: - case R_R_MODE: - case R_FSEL: - case R_LSEL: - case R_RSEL: - case R_BEGIN_BRTAB: - case R_END_BRTAB: - case R_BEGIN_TRY: - case R_N0SEL: - case R_N1SEL: - /* There is no symbol or addend associated with these fixups. */ - relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol); - relocs[i]->addend = 0; - break; - - case R_END_TRY: - case R_ENTRY: - case R_EXIT: - /* There is no symbol associated with these fixups. */ - relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol); - relocs[i]->addend = fixp->fx_offset; - break; - - default: - relocs[i]->addend = fixp->fx_offset; - } - } - - done: -#endif - - return relocs; -} - -/* Process any machine dependent frag types. */ - -void -md_convert_frag (abfd, sec, fragP) - register bfd *abfd; - register asection *sec; - register fragS *fragP; -{ - unsigned int address; - - if (fragP->fr_type == rs_machine_dependent) - { - switch ((int) fragP->fr_subtype) - { - case 0: - fragP->fr_type = rs_fill; - know (fragP->fr_var == 1); - know (fragP->fr_next); - address = fragP->fr_address + fragP->fr_fix; - if (address % fragP->fr_offset) - { - fragP->fr_offset = - fragP->fr_next->fr_address - - fragP->fr_address - - fragP->fr_fix; - } - else - fragP->fr_offset = 0; - break; - } - } -} - -/* Round up a section size to the appropriate boundary. */ - -valueT -md_section_align (segment, size) - asection *segment; - valueT size; -{ - int align = bfd_get_section_alignment (stdoutput, segment); - int align2 = (1 << align) - 1; - - return (size + align2) & ~align2; -} - -/* Return the approximate size of a frag before relaxation has occurred. */ -int -md_estimate_size_before_relax (fragP, segment) - register fragS *fragP; - asection *segment; -{ - int size; - - size = 0; - - while ((fragP->fr_fix + size) % fragP->fr_offset) - size++; - - return size; -} - -CONST char *md_shortopts = ""; -struct option md_longopts[] = { - {NULL, no_argument, NULL, 0} -}; -size_t md_longopts_size = sizeof(md_longopts); - -int -md_parse_option (c, arg) - int c; - char *arg; -{ - return 0; -} - -void -md_show_usage (stream) - FILE *stream; -{ -} - -/* We have no need to default values of symbols. */ - -symbolS * -md_undefined_symbol (name) - char *name; -{ - return 0; -} - -/* Apply a fixup to an instruction. */ - -int -md_apply_fix (fixP, valp) - fixS *fixP; - valueT *valp; -{ - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - struct hppa_fix_struct *hppa_fixP; - long new_val, result = 0; - unsigned int w1, w2, w, resulti; - - hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data; - /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can - never be "applied" (they are just markers). Likewise for - R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */ -#ifdef OBJ_SOM - if (fixP->fx_r_type == R_HPPA_ENTRY - || fixP->fx_r_type == R_HPPA_EXIT - || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB - || fixP->fx_r_type == R_HPPA_END_BRTAB - || fixP->fx_r_type == R_HPPA_BEGIN_TRY) - return 1; - - /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY - fixups are considered not adjustable, which in turn causes - adjust_reloc_syms to not set fx_offset. Ugh. */ - if (fixP->fx_r_type == R_HPPA_END_TRY) - { - fixP->fx_offset = *valp; - return 1; - } -#endif - - /* There should have been an HPPA specific fixup associated - with the GAS fixup. */ - if (hppa_fixP) - { - unsigned long buf_wd = bfd_get_32 (stdoutput, buf); - unsigned char fmt = bfd_hppa_insn2fmt (buf_wd); - - /* If there is a symbol associated with this fixup, then it's something - which will need a SOM relocation (except for some PC-relative relocs). - In such cases we should treat the "val" or "addend" as zero since it - will be added in as needed from fx_offset in tc_gen_reloc. */ - if ((fixP->fx_addsy != NULL - || fixP->fx_r_type == R_HPPA_NONE) -#ifdef OBJ_SOM - && fmt != 32 -#endif - ) - new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0); -#ifdef OBJ_SOM - /* These field selectors imply that we do not want an addend. */ - else if (hppa_fixP->fx_r_field == e_psel - || hppa_fixP->fx_r_field == e_rpsel - || hppa_fixP->fx_r_field == e_lpsel - || hppa_fixP->fx_r_field == e_tsel - || hppa_fixP->fx_r_field == e_rtsel - || hppa_fixP->fx_r_field == e_ltsel) - new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0); - /* This is truely disgusting. The machine independent code blindly - adds in the value of the symbol being relocated against. Damn! */ - else if (fmt == 32 - && fixP->fx_addsy != NULL - && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr) - new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy), - 0, hppa_fixP->fx_r_field); -#endif - else - new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field); - - /* Handle pc-relative exceptions from above. */ -#define arg_reloc_stub_needed(CALLER, CALLEE) \ - ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER))) - if ((fmt == 12 || fmt == 17 || fmt == 22) - && fixP->fx_addsy - && fixP->fx_pcrel - && !arg_reloc_stub_needed ((long) ((obj_symbol_type *) - symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc, - hppa_fixP->fx_arg_reloc) - && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22) - && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment - && !(fixP->fx_subsy - && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment)) - - new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field); -#undef arg_reloc_stub_needed - - switch (fmt) - { - /* Handle all opcodes with the 'j' operand type. */ - case 14: - CHECK_FIELD (new_val, 8191, -8192, 0); - - /* Mask off 14 bits to be changed. */ - bfd_put_32 (stdoutput, - bfd_get_32 (stdoutput, buf) & 0xffffc000, - buf); - low_sign_unext (new_val, 14, &resulti); - result = resulti; - break; - - /* Handle all opcodes with the 'k' operand type. */ - case 21: - CHECK_FIELD (new_val, 2097152, 0, 0); - - /* Mask off 21 bits to be changed. */ - bfd_put_32 (stdoutput, - bfd_get_32 (stdoutput, buf) & 0xffe00000, - buf); - dis_assemble_21 (new_val, &resulti); - result = resulti; - break; - - /* Handle all the opcodes with the 'i' operand type. */ - case 11: - CHECK_FIELD (new_val, 1023, -1023, 0); - - /* Mask off 11 bits to be changed. */ - bfd_put_32 (stdoutput, - bfd_get_32 (stdoutput, buf) & 0xffff800, - buf); - low_sign_unext (new_val, 11, &resulti); - result = resulti; - break; - - /* Handle all the opcodes with the 'w' operand type. */ - case 12: - CHECK_FIELD (new_val, 8199, -8184, 0); - - /* Mask off 11 bits to be changed. */ - sign_unext ((new_val - 8) >> 2, 12, &resulti); - bfd_put_32 (stdoutput, - bfd_get_32 (stdoutput, buf) & 0xffffe002, - buf); - - dis_assemble_12 (resulti, &w1, &w); - result = ((w1 << 2) | w); - break; - - /* Handle some of the opcodes with the 'W' operand type. */ - case 17: - { - int distance = *valp; - - CHECK_FIELD (new_val, 262143, -262144, 0); - - /* If this is an absolute branch (ie no link) with an out of - range target, then we want to complain. */ - if (fixP->fx_r_type == R_HPPA_PCREL_CALL - && (distance > 262143 || distance < -262144) - && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000) - CHECK_FIELD (distance, 262143, -262144, 0); - - /* Mask off 17 bits to be changed. */ - bfd_put_32 (stdoutput, - bfd_get_32 (stdoutput, buf) & 0xffe0e002, - buf); - sign_unext ((new_val - 8) >> 2, 17, &resulti); - dis_assemble_17 (resulti, &w1, &w2, &w); - result = ((w2 << 2) | (w1 << 16) | w); - break; - } - - case 32: - result = 0; - bfd_put_32 (stdoutput, new_val, buf); - break; - - default: - as_bad (_("Unknown relocation encountered in md_apply_fix.")); - return 0; - } - - /* Insert the relocation. */ - bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf); - return 1; - } - else - { - printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"), - (unsigned int) fixP, fixP->fx_r_type); - return 0; - } -} - -/* Exactly what point is a PC-relative offset relative TO? - On the PA, they're relative to the address of the offset. */ - -long -md_pcrel_from (fixP) - fixS *fixP; -{ - return fixP->fx_where + fixP->fx_frag->fr_address; -} - -/* Return nonzero if the input line pointer is at the end of - a statement. */ - -static int -is_end_of_statement () -{ - return ((*input_line_pointer == '\n') - || (*input_line_pointer == ';') - || (*input_line_pointer == '!')); -} - -/* Read a number from S. The number might come in one of many forms, - the most common will be a hex or decimal constant, but it could be - a pre-defined register (Yuk!), or an absolute symbol. - - Return a number or -1 for failure. - - When parsing PA-89 FP register numbers RESULT will be - the address of a structure to return information about - L/R half of FP registers, store results there as appropriate. - - pa_parse_number can not handle negative constants and will fail - horribly if it is passed such a constant. */ - -static int -pa_parse_number (s, result) - char **s; - struct pa_11_fp_reg_struct *result; -{ - int num; - char *name; - char c; - symbolS *sym; - int status; - char *p = *s; - - /* Skip whitespace before the number. */ - while (*p == ' ' || *p == '\t') - p = p + 1; - - /* Store info in RESULT if requested by caller. */ - if (result) - { - result->number_part = -1; - result->l_r_select = -1; - } - num = -1; - - if (isdigit (*p)) - { - /* Looks like a number. */ - num = 0; - - if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X')) - { - /* The number is specified in hex. */ - p += 2; - while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f')) - || ((*p >= 'A') && (*p <= 'F'))) - { - if (isdigit (*p)) - num = num * 16 + *p - '0'; - else if (*p >= 'a' && *p <= 'f') - num = num * 16 + *p - 'a' + 10; - else - num = num * 16 + *p - 'A' + 10; - ++p; - } - } - else - { - /* The number is specified in decimal. */ - while (isdigit (*p)) - { - num = num * 10 + *p - '0'; - ++p; - } - } - - /* Store info in RESULT if requested by the caller. */ - if (result) - { - result->number_part = num; - - if (IS_R_SELECT (p)) - { - result->l_r_select = 1; - ++p; - } - else if (IS_L_SELECT (p)) - { - result->l_r_select = 0; - ++p; - } - else - result->l_r_select = 0; - } - } - else if (*p == '%') - { - /* The number might be a predefined register. */ - num = 0; - name = p; - p++; - c = *p; - /* Tege hack: Special case for general registers as the general - code makes a binary search with case translation, and is VERY - slow. */ - if (c == 'r') - { - p++; - if (*p == 'e' && *(p + 1) == 't' - && (*(p + 2) == '0' || *(p + 2) == '1')) - { - p += 2; - num = *p - '0' + 28; - p++; - } - else if (*p == 'p') - { - num = 2; - p++; - } - else if (!isdigit (*p)) - { - if (print_errors) - as_bad (_("Undefined register: '%s'."), name); - num = -1; - } - else - { - do - num = num * 10 + *p++ - '0'; - while (isdigit (*p)); - } - } - else - { - /* Do a normal register search. */ - while (is_part_of_name (c)) - { - p = p + 1; - c = *p; - } - *p = 0; - status = reg_name_search (name); - if (status >= 0) - num = status; - else - { - if (print_errors) - as_bad (_("Undefined register: '%s'."), name); - num = -1; - } - *p = c; - } - - /* Store info in RESULT if requested by caller. */ - if (result) - { - result->number_part = num; - if (IS_R_SELECT (p - 1)) - result->l_r_select = 1; - else if (IS_L_SELECT (p - 1)) - result->l_r_select = 0; - else - result->l_r_select = 0; - } - } - else - { - /* And finally, it could be a symbol in the absolute section which - is effectively a constant. */ - num = 0; - name = p; - c = *p; - while (is_part_of_name (c)) - { - p = p + 1; - c = *p; - } - *p = 0; - if ((sym = symbol_find (name)) != NULL) - { - if (S_GET_SEGMENT (sym) == &bfd_abs_section) - num = S_GET_VALUE (sym); - else - { - if (print_errors) - as_bad (_("Non-absolute symbol: '%s'."), name); - num = -1; - } - } - else - { - /* There is where we'd come for an undefined symbol - or for an empty string. For an empty string we - will return zero. That's a concession made for - compatability with the braindamaged HP assemblers. */ - if (*name == 0) - num = 0; - else - { - if (print_errors) - as_bad (_("Undefined absolute constant: '%s'."), name); - num = -1; - } - } - *p = c; - - /* Store info in RESULT if requested by caller. */ - if (result) - { - result->number_part = num; - if (IS_R_SELECT (p - 1)) - result->l_r_select = 1; - else if (IS_L_SELECT (p - 1)) - result->l_r_select = 0; - else - result->l_r_select = 0; - } - } - - *s = p; - return num; -} - -#define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg)) - -/* Given NAME, find the register number associated with that name, return - the integer value associated with the given name or -1 on failure. */ - -static int -reg_name_search (name) - char *name; -{ - int middle, low, high; - int cmp; - - low = 0; - high = REG_NAME_CNT - 1; - - do - { - middle = (low + high) / 2; - cmp = strcasecmp (name, pre_defined_registers[middle].name); - if (cmp < 0) - high = middle - 1; - else if (cmp > 0) - low = middle + 1; - else - return pre_defined_registers[middle].value; - } - while (low <= high); - - return -1; -} - - -/* Return nonzero if the given INSN and L/R information will require - a new PA-1.1 opcode. */ - -static int -need_pa11_opcode (insn, result) - struct pa_it *insn; - struct pa_11_fp_reg_struct *result; -{ - if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL)) - { - /* If this instruction is specific to a particular architecture, - then set a new architecture. */ - if (bfd_get_mach (stdoutput) < pa11) - { - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11)) - as_warn (_("could not update architecture and machine")); - } - return TRUE; - } - else - return FALSE; -} - -/* Parse a condition for a fcmp instruction. Return the numerical - code associated with the condition. */ - -static int -pa_parse_fp_cmp_cond (s) - char **s; -{ - int cond, i; - - cond = 0; - - for (i = 0; i < 32; i++) - { - if (strncasecmp (*s, fp_cond_map[i].string, - strlen (fp_cond_map[i].string)) == 0) - { - cond = fp_cond_map[i].cond; - *s += strlen (fp_cond_map[i].string); - /* If not a complete match, back up the input string and - report an error. */ - if (**s != ' ' && **s != '\t') - { - *s -= strlen (fp_cond_map[i].string); - break; - } - while (**s == ' ' || **s == '\t') - *s = *s + 1; - return cond; - } - } - - as_bad (_("Invalid FP Compare Condition: %s"), *s); - - /* Advance over the bogus completer. */ - while (**s != ',' && **s != ' ' && **s != '\t') - *s += 1; - - return 0; -} - - -/* Parse an FP operand format completer returning the completer - type. */ - -static fp_operand_format -pa_parse_fp_format (s) - char **s; -{ - int format; - - format = SGL; - if (**s == ',') - { - *s += 1; - if (strncasecmp (*s, "sgl", 3) == 0) - { - format = SGL; - *s += 4; - } - else if (strncasecmp (*s, "dbl", 3) == 0) - { - format = DBL; - *s += 4; - } - else if (strncasecmp (*s, "quad", 4) == 0) - { - format = QUAD; - *s += 5; - } - else - { - format = ILLEGAL_FMT; - as_bad (_("Invalid FP Operand Format: %3s"), *s); - } - } - - return format; -} - -/* Convert from a selector string into a selector type. */ - -static int -pa_chk_field_selector (str) - char **str; -{ - int middle, low, high; - int cmp; - char name[4]; - - /* Read past any whitespace. */ - /* FIXME: should we read past newlines and formfeeds??? */ - while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f') - *str = *str + 1; - - if ((*str)[1] == '\'' || (*str)[1] == '%') - name[0] = tolower ((*str)[0]), - name[1] = 0; - else if ((*str)[2] == '\'' || (*str)[2] == '%') - name[0] = tolower ((*str)[0]), - name[1] = tolower ((*str)[1]), - name[2] = 0; -#ifdef OBJ_SOM - else if ((*str)[3] == '\'' || (*str)[3] == '%') - name[0] = tolower ((*str)[0]), - name[1] = tolower ((*str)[1]), - name[2] = tolower ((*str)[2]), - name[3] = 0; -#endif - else - return e_fsel; - - low = 0; - high = sizeof (selector_table) / sizeof (struct selector_entry) - 1; - - do - { - middle = (low + high) / 2; - cmp = strcmp (name, selector_table[middle].prefix); - if (cmp < 0) - high = middle - 1; - else if (cmp > 0) - low = middle + 1; - else - { - *str += strlen (name) + 1; -#ifndef OBJ_SOM - if (selector_table[middle].field_selector == e_nsel) - return e_fsel; -#endif - return selector_table[middle].field_selector; - } - } - while (low <= high); - - return e_fsel; -} - -/* Mark (via expr_end) the end of an expression (I think). FIXME. */ - -static int -get_expression (str) - char *str; -{ - char *save_in; - asection *seg; - - save_in = input_line_pointer; - input_line_pointer = str; - seg = expression (&the_insn.exp); - if (!(seg == absolute_section - || seg == undefined_section - || SEG_NORMAL (seg))) - { - as_warn (_("Bad segment in expression.")); - expr_end = input_line_pointer; - input_line_pointer = save_in; - return 1; - } - expr_end = input_line_pointer; - input_line_pointer = save_in; - return 0; -} - -/* Mark (via expr_end) the end of an absolute expression. FIXME. */ -static int -pa_get_absolute_expression (insn, strp) - struct pa_it *insn; - char **strp; -{ - char *save_in; - - insn->field_selector = pa_chk_field_selector (strp); - save_in = input_line_pointer; - input_line_pointer = *strp; - expression (&insn->exp); - /* This is not perfect, but is a huge improvement over doing nothing. - - The PA assembly syntax is ambigious in a variety of ways. Consider - this string "4 %r5" Is that the number 4 followed by the register - r5, or is that 4 MOD 5? - - If we get a modulo expresion When looking for an absolute, we try - again cutting off the input string at the first whitespace character. */ - if (insn->exp.X_op == O_modulus) - { - char *s, c; - int retval; - - input_line_pointer = *strp; - s = *strp; - while (*s != ',' && *s != ' ' && *s != '\t') - s++; - - c = *s; - *s = 0; - - retval = pa_get_absolute_expression (insn, strp); - - input_line_pointer = save_in; - *s = c; - return evaluate_absolute (insn); - } - if (insn->exp.X_op != O_constant) - { - as_bad (_("Bad segment (should be absolute).")); - expr_end = input_line_pointer; - input_line_pointer = save_in; - return 0; - } - expr_end = input_line_pointer; - input_line_pointer = save_in; - return evaluate_absolute (insn); -} - -/* Evaluate an absolute expression EXP which may be modified by - the selector FIELD_SELECTOR. Return the value of the expression. */ -static int -evaluate_absolute (insn) - struct pa_it *insn; -{ - int value; - expressionS exp; - int field_selector = insn->field_selector; - - exp = insn->exp; - value = exp.X_add_number; - - switch (field_selector) - { - /* No change. */ - case e_fsel: - break; - - /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */ - case e_lssel: - if (value & 0x00000400) - value += 0x800; - value = (value & 0xfffff800) >> 11; - break; - - /* Sign extend from bit 21. */ - case e_rssel: - if (value & 0x00000400) - value |= 0xfffff800; - else - value &= 0x7ff; - break; - - /* Arithmetic shift right 11 bits. */ - case e_lsel: - value = (value & 0xfffff800) >> 11; - break; - - /* Set bits 0-20 to zero. */ - case e_rsel: - value = value & 0x7ff; - break; - - /* Add 0x800 and arithmetic shift right 11 bits. */ - case e_ldsel: - value += 0x800; - value = (value & 0xfffff800) >> 11; - break; - - /* Set bitgs 0-21 to one. */ - case e_rdsel: - value |= 0xfffff800; - break; - -#define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff) - case e_rrsel: - value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value)); - break; - - case e_lrsel: - value = (RSEL_ROUND (value) >> 11) & 0x1fffff; - break; -#undef RSEL_ROUND - - default: - BAD_CASE (field_selector); - break; - } - return value; -} - -/* Given an argument location specification return the associated - argument location number. */ - -static unsigned int -pa_build_arg_reloc (type_name) - char *type_name; -{ - - if (strncasecmp (type_name, "no", 2) == 0) - return 0; - if (strncasecmp (type_name, "gr", 2) == 0) - return 1; - else if (strncasecmp (type_name, "fr", 2) == 0) - return 2; - else if (strncasecmp (type_name, "fu", 2) == 0) - return 3; - else - as_bad (_("Invalid argument location: %s\n"), type_name); - - return 0; -} - -/* Encode and return an argument relocation specification for - the given register in the location specified by arg_reloc. */ - -static unsigned int -pa_align_arg_reloc (reg, arg_reloc) - unsigned int reg; - unsigned int arg_reloc; -{ - unsigned int new_reloc; - - new_reloc = arg_reloc; - switch (reg) - { - case 0: - new_reloc <<= 8; - break; - case 1: - new_reloc <<= 6; - break; - case 2: - new_reloc <<= 4; - break; - case 3: - new_reloc <<= 2; - break; - default: - as_bad (_("Invalid argument description: %d"), reg); - } - - return new_reloc; -} - -/* Parse a PA nullification completer (,n). Return nonzero if the - completer was found; return zero if no completer was found. */ - -static int -pa_parse_nullif (s) - char **s; -{ - int nullif; - - nullif = 0; - if (**s == ',') - { - *s = *s + 1; - if (strncasecmp (*s, "n", 1) == 0) - nullif = 1; - else - { - as_bad (_("Invalid Nullification: (%c)"), **s); - nullif = 0; - } - *s = *s + 1; - } - - return nullif; -} - -/* Parse a non-negated compare/subtract completer returning the - number (for encoding in instrutions) of the given completer. - - ISBRANCH specifies whether or not this is parsing a condition - completer for a branch (vs a nullification completer for a - computational instruction. */ - -static int -pa_parse_nonneg_cmpsub_cmpltr (s, isbranch) - char **s; - int isbranch; -{ - int cmpltr; - char *name = *s + 1; - char c; - char *save_s = *s; - int nullify = 0; - - cmpltr = 0; - if (**s == ',') - { - *s += 1; - while (**s != ',' && **s != ' ' && **s != '\t') - *s += 1; - c = **s; - **s = 0x00; - - - if (strcmp (name, "=") == 0) - { - cmpltr = 1; - } - else if (strcmp (name, "<") == 0) - { - cmpltr = 2; - } - else if (strcmp (name, "<=") == 0) - { - cmpltr = 3; - } - else if (strcmp (name, "<<") == 0) - { - cmpltr = 4; - } - else if (strcmp (name, "<<=") == 0) - { - cmpltr = 5; - } - else if (strcasecmp (name, "sv") == 0) - { - cmpltr = 6; - } - else if (strcasecmp (name, "od") == 0) - { - cmpltr = 7; - } - /* If we have something like addb,n then there is no condition - completer. */ - else if (strcasecmp (name, "n") == 0 && isbranch) - { - cmpltr = 0; - nullify = 1; - } - else - { - cmpltr = -1; - } - **s = c; - } - - /* Reset pointers if this was really a ,n for a branch instruction. */ - if (nullify) - *s = save_s; - - - return cmpltr; -} - -/* Parse a negated compare/subtract completer returning the - number (for encoding in instrutions) of the given completer. - - ISBRANCH specifies whether or not this is parsing a condition - completer for a branch (vs a nullification completer for a - computational instruction. */ - -static int -pa_parse_neg_cmpsub_cmpltr (s, isbranch) - char **s; - int isbranch; -{ - int cmpltr; - char *name = *s + 1; - char c; - char *save_s = *s; - int nullify = 0; - - cmpltr = 0; - if (**s == ',') - { - *s += 1; - while (**s != ',' && **s != ' ' && **s != '\t') - *s += 1; - c = **s; - **s = 0x00; - - - if (strcasecmp (name, "tr") == 0) - { - cmpltr = 0; - } - else if (strcmp (name, "<>") == 0) - { - cmpltr = 1; - } - else if (strcmp (name, ">=") == 0) - { - cmpltr = 2; - } - else if (strcmp (name, ">") == 0) - { - cmpltr = 3; - } - else if (strcmp (name, ">>=") == 0) - { - cmpltr = 4; - } - else if (strcmp (name, ">>") == 0) - { - cmpltr = 5; - } - else if (strcasecmp (name, "nsv") == 0) - { - cmpltr = 6; - } - else if (strcasecmp (name, "ev") == 0) - { - cmpltr = 7; - } - /* If we have something like addb,n then there is no condition - completer. */ - else if (strcasecmp (name, "n") == 0 && isbranch) - { - cmpltr = 0; - nullify = 1; - } - else - { - cmpltr = -1; - } - **s = c; - } - - /* Reset pointers if this was really a ,n for a branch instruction. */ - if (nullify) - *s = save_s; - - - return cmpltr; -} - - -/* Parse a non-negated addition completer returning the number - (for encoding in instrutions) of the given completer. - - ISBRANCH specifies whether or not this is parsing a condition - completer for a branch (vs a nullification completer for a - computational instruction. */ - -static int -pa_parse_nonneg_add_cmpltr (s, isbranch) - char **s; - int isbranch; -{ - int cmpltr; - char *name = *s + 1; - char c; - char *save_s = *s; - - cmpltr = 0; - if (**s == ',') - { - *s += 1; - while (**s != ',' && **s != ' ' && **s != '\t') - *s += 1; - c = **s; - **s = 0x00; - if (strcmp (name, "=") == 0) - { - cmpltr = 1; - } - else if (strcmp (name, "<") == 0) - { - cmpltr = 2; - } - else if (strcmp (name, "<=") == 0) - { - cmpltr = 3; - } - else if (strcasecmp (name, "nuv") == 0) - { - cmpltr = 4; - } - else if (strcasecmp (name, "znv") == 0) - { - cmpltr = 5; - } - else if (strcasecmp (name, "sv") == 0) - { - cmpltr = 6; - } - else if (strcasecmp (name, "od") == 0) - { - cmpltr = 7; - } - /* If we have something like addb,n then there is no condition - completer. */ - else if (strcasecmp (name, "n") == 0 && isbranch) - { - cmpltr = 0; - } - else - { - cmpltr = -1; - } - **s = c; - } - - /* Reset pointers if this was really a ,n for a branch instruction. */ - if (cmpltr == 0 && *name == 'n' && isbranch) - *s = save_s; - - return cmpltr; -} - -/* Parse a negated addition completer returning the number - (for encoding in instrutions) of the given completer. - - ISBRANCH specifies whether or not this is parsing a condition - completer for a branch (vs a nullification completer for a - computational instruction). */ - -static int -pa_parse_neg_add_cmpltr (s, isbranch) - char **s; - int isbranch; -{ - int cmpltr; - char *name = *s + 1; - char c; - char *save_s = *s; - - cmpltr = 0; - if (**s == ',') - { - *s += 1; - while (**s != ',' && **s != ' ' && **s != '\t') - *s += 1; - c = **s; - **s = 0x00; - if (strcasecmp (name, "tr") == 0) - { - cmpltr = 0; - } - else if (strcmp (name, "<>") == 0) - { - cmpltr = 1; - } - else if (strcmp (name, ">=") == 0) - { - cmpltr = 2; - } - else if (strcmp (name, ">") == 0) - { - cmpltr = 3; - } - else if (strcasecmp (name, "uv") == 0) - { - cmpltr = 4; - } - else if (strcasecmp (name, "vnz") == 0) - { - cmpltr = 5; - } - else if (strcasecmp (name, "nsv") == 0) - { - cmpltr = 6; - } - else if (strcasecmp (name, "ev") == 0) - { - cmpltr = 7; - } - /* If we have something like addb,n then there is no condition - completer. */ - else if (strcasecmp (name, "n") == 0 && isbranch) - { - cmpltr = 0; - } - else - { - cmpltr = -1; - } - **s = c; - } - - /* Reset pointers if this was really a ,n for a branch instruction. */ - if (cmpltr == 0 && *name == 'n' && isbranch) - *s = save_s; - - return cmpltr; -} - -/* Handle an alignment directive. Special so that we can update the - alignment of the subspace if necessary. */ -static void -pa_align (bytes) -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - /* Let the generic gas code do most of the work. */ - s_align_bytes (bytes); - - /* If bytes is a power of 2, then update the current subspace's - alignment if necessary. */ - if (log2 (bytes) != -1) - record_alignment (current_subspace->ssd_seg, log2 (bytes)); -} - -/* Handle a .BLOCK type pseudo-op. */ - -static void -pa_block (z) - int z; -{ - char *p; - long int temp_fill; - unsigned int temp_size; - unsigned int i; - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - temp_size = get_absolute_expression (); - - /* Always fill with zeros, that's what the HP assembler does. */ - temp_fill = 0; - - p = frag_var (rs_fill, (int) temp_size, (int) temp_size, - (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL); - memset (p, 0, temp_size); - - /* Convert 2 bytes at a time. */ - - for (i = 0; i < temp_size; i += 2) - { - md_number_to_chars (p + i, - (valueT) temp_fill, - (int) ((temp_size - i) > 2 ? 2 : (temp_size - i))); - } - - pa_undefine_label (); - demand_empty_rest_of_line (); -} - -/* Handle a .begin_brtab and .end_brtab pseudo-op. */ - -static void -pa_brtab (begin) - int begin; -{ - -#ifdef OBJ_SOM - /* The BRTAB relocations are only availble in SOM (to denote - the beginning and end of branch tables). */ - char *where = frag_more (0); - - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, NULL, - 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB, - e_fsel, 0, 0, NULL); -#endif - - demand_empty_rest_of_line (); -} - -/* Handle a .begin_try and .end_try pseudo-op. */ - -static void -pa_try (begin) - int begin; -{ -#ifdef OBJ_SOM - expressionS exp; - char *where = frag_more (0); - - if (! begin) - expression (&exp); - - /* The TRY relocations are only availble in SOM (to denote - the beginning and end of exception handling regions). */ - - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, begin ? NULL : &exp, - 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY, - e_fsel, 0, 0, NULL); -#endif - - demand_empty_rest_of_line (); -} - -/* Handle a .CALL pseudo-op. This involves storing away information - about where arguments are to be found so the linker can detect - (and correct) argument location mismatches between caller and callee. */ - -static void -pa_call (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - pa_call_args (&last_call_desc); - demand_empty_rest_of_line (); -} - -/* Do the dirty work of building a call descriptor which describes - where the caller placed arguments to a function call. */ - -static void -pa_call_args (call_desc) - struct call_desc *call_desc; -{ - char *name, c, *p; - unsigned int temp, arg_reloc; - - while (!is_end_of_statement ()) - { - name = input_line_pointer; - c = get_symbol_end (); - /* Process a source argument. */ - if ((strncasecmp (name, "argw", 4) == 0)) - { - temp = atoi (name + 4); - p = input_line_pointer; - *p = c; - input_line_pointer++; - name = input_line_pointer; - c = get_symbol_end (); - arg_reloc = pa_build_arg_reloc (name); - call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc); - } - /* Process a return value. */ - else if ((strncasecmp (name, "rtnval", 6) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - name = input_line_pointer; - c = get_symbol_end (); - arg_reloc = pa_build_arg_reloc (name); - call_desc->arg_reloc |= (arg_reloc & 0x3); - } - else - { - as_bad (_("Invalid .CALL argument: %s"), name); - } - p = input_line_pointer; - *p = c; - if (!is_end_of_statement ()) - input_line_pointer++; - } -} - -/* Return TRUE if FRAG1 and FRAG2 are the same. */ - -static int -is_same_frag (frag1, frag2) - fragS *frag1; - fragS *frag2; -{ - - if (frag1 == NULL) - return (FALSE); - else if (frag2 == NULL) - return (FALSE); - else if (frag1 == frag2) - return (TRUE); - else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0) - return (is_same_frag (frag1, frag2->fr_next)); - else - return (FALSE); -} - -#ifdef OBJ_ELF -/* Build an entry in the UNWIND subspace from the given function - attributes in CALL_INFO. This is not needed for SOM as using - R_ENTRY and R_EXIT relocations allow the linker to handle building - of the unwind spaces. */ - -static void -pa_build_unwind_subspace (call_info) - struct call_info *call_info; -{ - char *unwind; - asection *seg, *save_seg; - subsegT subseg, save_subseg; - int i; - char c, *p; - - /* Get into the right seg/subseg. This may involve creating - the seg the first time through. Make sure to have the - old seg/subseg so that we can reset things when we are done. */ - subseg = SUBSEG_UNWIND; - seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME); - if (seg == ASEC_NULL) - { - seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME); - bfd_set_section_flags (stdoutput, seg, - SEC_READONLY | SEC_HAS_CONTENTS - | SEC_LOAD | SEC_RELOC); - } - - save_seg = now_seg; - save_subseg = now_subseg; - subseg_set (seg, subseg); - - - /* Get some space to hold relocation information for the unwind - descriptor. */ - p = frag_more (4); - md_number_to_chars (p, 0, 4); - - /* Relocation info. for start offset of the function. */ - fix_new_hppa (frag_now, p - frag_now->fr_literal, 4, - call_info->start_symbol, (offsetT) 0, - (expressionS *) NULL, 0, R_PARISC_DIR32, e_fsel, 32, 0, NULL); - - p = frag_more (4); - md_number_to_chars (p, 0, 4); - - /* Relocation info. for end offset of the function. - - Because we allow reductions of 32bit relocations for ELF, this will be - reduced to section_sym + offset which avoids putting the temporary - symbol into the symbol table. It (should) end up giving the same - value as call_info->start_symbol + function size once the linker is - finished with its work. */ - - fix_new_hppa (frag_now, p - frag_now->fr_literal, 4, - call_info->end_symbol, (offsetT) 0, - (expressionS *) NULL, 0, R_PARISC_DIR32, e_fsel, 32, 0, NULL); - - /* Dump it. */ - unwind = (char *) &call_info->ci_unwind; - for (i = 8; i < sizeof (struct unwind_table); i++) - { - c = *(unwind + i); - { - FRAG_APPEND_1_CHAR (c); - } - } - - /* Return back to the original segment/subsegment. */ - subseg_set (save_seg, save_subseg); -} -#endif - -/* Process a .CALLINFO pseudo-op. This information is used later - to build unwind descriptors and maybe one day to support - .ENTER and .LEAVE. */ - -static void -pa_callinfo (unused) - int unused; -{ - char *name, c, *p; - int temp; - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - /* .CALLINFO must appear within a procedure definition. */ - if (!within_procedure) - as_bad (_(".callinfo is not within a procedure definition")); - - /* Mark the fact that we found the .CALLINFO for the - current procedure. */ - callinfo_found = TRUE; - - /* Iterate over the .CALLINFO arguments. */ - while (!is_end_of_statement ()) - { - name = input_line_pointer; - c = get_symbol_end (); - /* Frame size specification. */ - if ((strncasecmp (name, "frame", 5) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = get_absolute_expression (); - if ((temp & 0x3) != 0) - { - as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp); - temp = 0; - } - - /* callinfo is in bytes and unwind_desc is in 8 byte units. */ - last_call_info->ci_unwind.descriptor.frame_size = temp / 8; - - } - /* Entry register (GR, GR and SR) specifications. */ - else if ((strncasecmp (name, "entry_gr", 8) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = get_absolute_expression (); - /* The HP assembler accepts 19 as the high bound for ENTRY_GR - even though %r19 is caller saved. I think this is a bug in - the HP assembler, and we are not going to emulate it. */ - if (temp < 3 || temp > 18) - as_bad (_("Value for ENTRY_GR must be in the range 3..18\n")); - last_call_info->ci_unwind.descriptor.entry_gr = temp - 2; - } - else if ((strncasecmp (name, "entry_fr", 8) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = get_absolute_expression (); - /* Similarly the HP assembler takes 31 as the high bound even - though %fr21 is the last callee saved floating point register. */ - if (temp < 12 || temp > 21) - as_bad (_("Value for ENTRY_FR must be in the range 12..21\n")); - last_call_info->ci_unwind.descriptor.entry_fr = temp - 11; - } - else if ((strncasecmp (name, "entry_sr", 8) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = get_absolute_expression (); - if (temp != 3) - as_bad (_("Value for ENTRY_SR must be 3\n")); - } - /* Note whether or not this function performs any calls. */ - else if ((strncasecmp (name, "calls", 5) == 0) || - (strncasecmp (name, "caller", 6) == 0)) - { - p = input_line_pointer; - *p = c; - } - else if ((strncasecmp (name, "no_calls", 8) == 0)) - { - p = input_line_pointer; - *p = c; - } - /* Should RP be saved into the stack. */ - else if ((strncasecmp (name, "save_rp", 7) == 0)) - { - p = input_line_pointer; - *p = c; - last_call_info->ci_unwind.descriptor.save_rp = 1; - } - /* Likewise for SP. */ - else if ((strncasecmp (name, "save_sp", 7) == 0)) - { - p = input_line_pointer; - *p = c; - last_call_info->ci_unwind.descriptor.save_sp = 1; - } - /* Is this an unwindable procedure. If so mark it so - in the unwind descriptor. */ - else if ((strncasecmp (name, "no_unwind", 9) == 0)) - { - p = input_line_pointer; - *p = c; - last_call_info->ci_unwind.descriptor.cannot_unwind = 1; - } - /* Is this an interrupt routine. If so mark it in the - unwind descriptor. */ - else if ((strncasecmp (name, "hpux_int", 7) == 0)) - { - p = input_line_pointer; - *p = c; - last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1; - } - /* Is this a millicode routine. "millicode" isn't in my - assembler manual, but my copy is old. The HP assembler - accepts it, and there's a place in the unwind descriptor - to drop the information, so we'll accept it too. */ - else if ((strncasecmp (name, "millicode", 9) == 0)) - { - p = input_line_pointer; - *p = c; - last_call_info->ci_unwind.descriptor.millicode = 1; - } - else - { - as_bad (_("Invalid .CALLINFO argument: %s"), name); - *input_line_pointer = c; - } - if (!is_end_of_statement ()) - input_line_pointer++; - } - - demand_empty_rest_of_line (); -} - -/* Switch into the code subspace. */ - -static void -pa_code (unused) - int unused; -{ - current_space = is_defined_space ("$TEXT$"); - current_subspace - = pa_subsegment_to_subspace (current_space->sd_seg, 0); - s_text (0); - pa_undefine_label (); -} - -/* This is different than the standard GAS s_comm(). On HP9000/800 machines, - the .comm pseudo-op has the following symtax: - - <label> .comm <length> - - where <label> is optional and is a symbol whose address will be the start of - a block of memory <length> bytes long. <length> must be an absolute - expression. <length> bytes will be allocated in the current space - and subspace. - - Also note the label may not even be on the same line as the .comm. - - This difference in syntax means the colon function will be called - on the symbol before we arrive in pa_comm. colon will set a number - of attributes of the symbol that need to be fixed here. In particular - the value, section pointer, fragment pointer, flags, etc. What - a pain. - - This also makes error detection all but impossible. */ - -static void -pa_comm (unused) - int unused; -{ - unsigned int size; - symbolS *symbol; - label_symbol_struct *label_symbol = pa_get_label (); - - if (label_symbol) - symbol = label_symbol->lss_label; - else - symbol = NULL; - - SKIP_WHITESPACE (); - size = get_absolute_expression (); - - if (symbol) - { - S_SET_VALUE (symbol, size); - S_SET_SEGMENT (symbol, bfd_und_section_ptr); - S_SET_EXTERNAL (symbol); - - /* colon() has already set the frag to the current location in the - current subspace; we need to reset the fragment to the zero address - fragment. We also need to reset the segment pointer. */ - symbol_set_frag (symbol, &zero_address_frag); - } - demand_empty_rest_of_line (); -} - -/* Process a .END pseudo-op. */ - -static void -pa_end (unused) - int unused; -{ - demand_empty_rest_of_line (); -} - -/* Process a .ENTER pseudo-op. This is not supported. */ -static void -pa_enter (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - as_bad (_("The .ENTER pseudo-op is not supported")); - demand_empty_rest_of_line (); -} - -/* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the - procesure. */ -static void -pa_entry (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - if (!within_procedure) - as_bad (_("Misplaced .entry. Ignored.")); - else - { - if (!callinfo_found) - as_bad (_("Missing .callinfo.")); - } - demand_empty_rest_of_line (); - within_entry_exit = TRUE; - -#ifdef OBJ_SOM - /* SOM defers building of unwind descriptors until the link phase. - The assembler is responsible for creating an R_ENTRY relocation - to mark the beginning of a region and hold the unwind bits, and - for creating an R_EXIT relocation to mark the end of the region. - - FIXME. ELF should be using the same conventions! The problem - is an unwind requires too much relocation space. Hmmm. Maybe - if we split the unwind bits up between the relocations which - denote the entry and exit points. */ - if (last_call_info->start_symbol != NULL) - { - char *where = frag_more (0); - - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, NULL, - 0, R_HPPA_ENTRY, e_fsel, 0, 0, - (int *) &last_call_info->ci_unwind.descriptor); - } -#endif -} - -/* Handle a .EQU pseudo-op. */ - -static void -pa_equ (reg) - int reg; -{ - label_symbol_struct *label_symbol = pa_get_label (); - symbolS *symbol; - - if (label_symbol) - { - symbol = label_symbol->lss_label; - if (reg) - S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0)); - else - S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ()); - S_SET_SEGMENT (symbol, bfd_abs_section_ptr); - } - else - { - if (reg) - as_bad (_(".REG must use a label")); - else - as_bad (_(".EQU must use a label")); - } - - pa_undefine_label (); - demand_empty_rest_of_line (); -} - -/* Helper function. Does processing for the end of a function. This - usually involves creating some relocations or building special - symbols to mark the end of the function. */ - -static void -process_exit () -{ - char *where; - - where = frag_more (0); - -#ifdef OBJ_ELF - /* Mark the end of the function, stuff away the location of the frag - for the end of the function, and finally call pa_build_unwind_subspace - to add an entry in the unwind table. */ - hppa_elf_mark_end_of_function (); - pa_build_unwind_subspace (last_call_info); -#else - /* SOM defers building of unwind descriptors until the link phase. - The assembler is responsible for creating an R_ENTRY relocation - to mark the beginning of a region and hold the unwind bits, and - for creating an R_EXIT relocation to mark the end of the region. - - FIXME. ELF should be using the same conventions! The problem - is an unwind requires too much relocation space. Hmmm. Maybe - if we split the unwind bits up between the relocations which - denote the entry and exit points. */ - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, - NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0, - (int *) &last_call_info->ci_unwind.descriptor + 1); -#endif -} - -/* Process a .EXIT pseudo-op. */ - -static void -pa_exit (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - if (!within_procedure) - as_bad (_(".EXIT must appear within a procedure")); - else - { - if (!callinfo_found) - as_bad (_("Missing .callinfo")); - else - { - if (!within_entry_exit) - as_bad (_("No .ENTRY for this .EXIT")); - else - { - within_entry_exit = FALSE; - process_exit (); - } - } - } - demand_empty_rest_of_line (); -} - -/* Process a .EXPORT directive. This makes functions external - and provides information such as argument relocation entries - to callers. */ - -static void -pa_export (unused) - int unused; -{ - char *name, c, *p; - symbolS *symbol; - - name = input_line_pointer; - c = get_symbol_end (); - /* Make sure the given symbol exists. */ - if ((symbol = symbol_find_or_make (name)) == NULL) - { - as_bad (_("Cannot define export symbol: %s\n"), name); - p = input_line_pointer; - *p = c; - input_line_pointer++; - } - else - { - /* OK. Set the external bits and process argument relocations. */ - S_SET_EXTERNAL (symbol); - p = input_line_pointer; - *p = c; - if (!is_end_of_statement ()) - { - input_line_pointer++; - pa_type_args (symbol, 1); - } - } - - demand_empty_rest_of_line (); -} - -/* Helper function to process arguments to a .EXPORT pseudo-op. */ - -static void -pa_type_args (symbolP, is_export) - symbolS *symbolP; - int is_export; -{ - char *name, c, *p; - unsigned int temp, arg_reloc; - pa_symbol_type type = SYMBOL_TYPE_UNKNOWN; - obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP); - - if (strncasecmp (input_line_pointer, "absolute", 8) == 0) - - { - input_line_pointer += 8; - symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION; - S_SET_SEGMENT (symbolP, bfd_abs_section_ptr); - type = SYMBOL_TYPE_ABSOLUTE; - } - else if (strncasecmp (input_line_pointer, "code", 4) == 0) - { - input_line_pointer += 4; - /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM, - instead one should be IMPORTing/EXPORTing ENTRY types. - - Complain if one tries to EXPORT a CODE type since that's never - done. Both GCC and HP C still try to IMPORT CODE types, so - silently fix them to be ENTRY types. */ - if (S_IS_FUNCTION (symbolP)) - { - if (is_export) - as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"), - S_GET_NAME (symbolP)); - - symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; - type = SYMBOL_TYPE_ENTRY; - } - else - { - symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION; - type = SYMBOL_TYPE_CODE; - } - } - else if (strncasecmp (input_line_pointer, "data", 4) == 0) - { - input_line_pointer += 4; - symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION; - type = SYMBOL_TYPE_DATA; - } - else if ((strncasecmp (input_line_pointer, "entry", 5) == 0)) - { - input_line_pointer += 5; - symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; - type = SYMBOL_TYPE_ENTRY; - } - else if (strncasecmp (input_line_pointer, "millicode", 9) == 0) - { - input_line_pointer += 9; - symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; - type = SYMBOL_TYPE_MILLICODE; - } - else if (strncasecmp (input_line_pointer, "plabel", 6) == 0) - { - input_line_pointer += 6; - symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION; - type = SYMBOL_TYPE_PLABEL; - } - else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0) - { - input_line_pointer += 8; - symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; - type = SYMBOL_TYPE_PRI_PROG; - } - else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0) - { - input_line_pointer += 8; - symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; - type = SYMBOL_TYPE_SEC_PROG; - } - - /* SOM requires much more information about symbol types - than BFD understands. This is how we get this information - to the SOM BFD backend. */ -#ifdef obj_set_symbol_type - obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type); -#endif - - /* Now that the type of the exported symbol has been handled, - handle any argument relocation information. */ - while (!is_end_of_statement ()) - { - if (*input_line_pointer == ',') - input_line_pointer++; - name = input_line_pointer; - c = get_symbol_end (); - /* Argument sources. */ - if ((strncasecmp (name, "argw", 4) == 0)) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = atoi (name + 4); - name = input_line_pointer; - c = get_symbol_end (); - arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name)); - symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc; - *input_line_pointer = c; - } - /* The return value. */ - else if ((strncasecmp (name, "rtnval", 6)) == 0) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - name = input_line_pointer; - c = get_symbol_end (); - arg_reloc = pa_build_arg_reloc (name); - symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc; - *input_line_pointer = c; - } - /* Privelege level. */ - else if ((strncasecmp (name, "priv_lev", 8)) == 0) - { - p = input_line_pointer; - *p = c; - input_line_pointer++; - temp = atoi (input_line_pointer); - symbol->tc_data.ap.hppa_priv_level = temp; - c = get_symbol_end (); - *input_line_pointer = c; - } - else - { - as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name); - p = input_line_pointer; - *p = c; - } - if (!is_end_of_statement ()) - input_line_pointer++; - } -} - -/* Handle an .IMPORT pseudo-op. Any symbol referenced in a given - assembly file must either be defined in the assembly file, or - explicitly IMPORTED from another. */ - -static void -pa_import (unused) - int unused; -{ - char *name, c, *p; - symbolS *symbol; - - name = input_line_pointer; - c = get_symbol_end (); - - symbol = symbol_find (name); - /* Ugh. We might be importing a symbol defined earlier in the file, - in which case all the code below will really screw things up - (set the wrong segment, symbol flags & type, etc). */ - if (symbol == NULL || !S_IS_DEFINED (symbol)) - { - symbol = symbol_find_or_make (name); - p = input_line_pointer; - *p = c; - - if (!is_end_of_statement ()) - { - input_line_pointer++; - pa_type_args (symbol, 0); - } - else - { - /* Sigh. To be compatable with the HP assembler and to help - poorly written assembly code, we assign a type based on - the the current segment. Note only BSF_FUNCTION really - matters, we do not need to set the full SYMBOL_TYPE_* info. */ - if (now_seg == text_section) - symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION; - - /* If the section is undefined, then the symbol is undefined - Since this is an import, leave the section undefined. */ - S_SET_SEGMENT (symbol, bfd_und_section_ptr); - } - } - else - { - /* The symbol was already defined. Just eat everything up to - the end of the current statement. */ - while (!is_end_of_statement ()) - input_line_pointer++; - } - - demand_empty_rest_of_line (); -} - -/* Handle a .LABEL pseudo-op. */ - -static void -pa_label (unused) - int unused; -{ - char *name, c, *p; - - name = input_line_pointer; - c = get_symbol_end (); - - if (strlen (name) > 0) - { - colon (name); - p = input_line_pointer; - *p = c; - } - else - { - as_warn (_("Missing label name on .LABEL")); - } - - if (!is_end_of_statement ()) - { - as_warn (_("extra .LABEL arguments ignored.")); - ignore_rest_of_line (); - } - demand_empty_rest_of_line (); -} - -/* Handle a .LEAVE pseudo-op. This is not supported yet. */ - -static void -pa_leave (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - as_bad (_("The .LEAVE pseudo-op is not supported")); - demand_empty_rest_of_line (); -} - -/* Handle a .LEVEL pseudo-op. */ - -static void -pa_level (unused) - int unused; -{ - char *level; - - level = input_line_pointer; - if (strncmp (level, "1.0", 3) == 0) - { - input_line_pointer += 3; - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10)) - as_warn (_("could not set architecture and machine")); - } - else if (strncmp (level, "1.1", 3) == 0) - { - input_line_pointer += 3; - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11)) - as_warn (_("could not set architecture and machine")); - } - else if (strncmp (level, "2.0", 3) == 0) - { - input_line_pointer += 3; - if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20)) - as_warn (_("could not set architecture and machine")); - } - else - { - as_bad (_("Unrecognized .LEVEL argument\n")); - ignore_rest_of_line (); - } - demand_empty_rest_of_line (); -} - -/* Handle a .ORIGIN pseudo-op. */ - -static void -pa_origin (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - s_org (0); - pa_undefine_label (); -} - -/* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it - is for static functions. FIXME. Should share more code with .EXPORT. */ - -static void -pa_param (unused) - int unused; -{ - char *name, c, *p; - symbolS *symbol; - - name = input_line_pointer; - c = get_symbol_end (); - - if ((symbol = symbol_find_or_make (name)) == NULL) - { - as_bad (_("Cannot define static symbol: %s\n"), name); - p = input_line_pointer; - *p = c; - input_line_pointer++; - } - else - { - S_CLEAR_EXTERNAL (symbol); - p = input_line_pointer; - *p = c; - if (!is_end_of_statement ()) - { - input_line_pointer++; - pa_type_args (symbol, 0); - } - } - - demand_empty_rest_of_line (); -} - -/* Handle a .PROC pseudo-op. It is used to mark the beginning - of a procedure from a syntatical point of view. */ - -static void -pa_proc (unused) - int unused; -{ - struct call_info *call_info; - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - if (within_procedure) - as_fatal (_("Nested procedures")); - - /* Reset global variables for new procedure. */ - callinfo_found = FALSE; - within_procedure = TRUE; - - /* Create another call_info structure. */ - call_info = (struct call_info *) xmalloc (sizeof (struct call_info)); - - if (!call_info) - as_fatal (_("Cannot allocate unwind descriptor\n")); - - memset (call_info, 0, sizeof (struct call_info)); - - call_info->ci_next = NULL; - - if (call_info_root == NULL) - { - call_info_root = call_info; - last_call_info = call_info; - } - else - { - last_call_info->ci_next = call_info; - last_call_info = call_info; - } - - /* set up defaults on call_info structure */ - - call_info->ci_unwind.descriptor.cannot_unwind = 0; - call_info->ci_unwind.descriptor.region_desc = 1; - call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0; - - /* If we got a .PROC pseudo-op, we know that the function is defined - locally. Make sure it gets into the symbol table. */ - { - label_symbol_struct *label_symbol = pa_get_label (); - - if (label_symbol) - { - if (label_symbol->lss_label) - { - last_call_info->start_symbol = label_symbol->lss_label; - symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION; - } - else - as_bad (_("Missing function name for .PROC (corrupted label chain)")); - } - else - last_call_info->start_symbol = NULL; - } - - demand_empty_rest_of_line (); -} - -/* Process the syntatical end of a procedure. Make sure all the - appropriate pseudo-ops were found within the procedure. */ - -static void -pa_procend (unused) - int unused; -{ - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - /* If we are within a procedure definition, make sure we've - defined a label for the procedure; handle case where the - label was defined after the .PROC directive. - - Note there's not need to diddle with the segment or fragment - for the label symbol in this case. We have already switched - into the new $CODE$ subspace at this point. */ - if (within_procedure && last_call_info->start_symbol == NULL) - { - label_symbol_struct *label_symbol = pa_get_label (); - - if (label_symbol) - { - if (label_symbol->lss_label) - { - last_call_info->start_symbol = label_symbol->lss_label; - symbol_get_bfdsym (label_symbol->lss_label)->flags - |= BSF_FUNCTION; -#ifdef OBJ_SOM - /* Also handle allocation of a fixup to hold the unwind - information when the label appears after the proc/procend. */ - if (within_entry_exit) - { - char *where = frag_more (0); - - fix_new_hppa (frag_now, where - frag_now->fr_literal, 0, - NULL, (offsetT) 0, NULL, - 0, R_HPPA_ENTRY, e_fsel, 0, 0, - (int *) &last_call_info->ci_unwind.descriptor); - } -#endif - } - else - as_bad (_("Missing function name for .PROC (corrupted label chain)")); - } - else - as_bad (_("Missing function name for .PROC")); - } - - if (!within_procedure) - as_bad (_("misplaced .procend")); - - if (!callinfo_found) - as_bad (_("Missing .callinfo for this procedure")); - - if (within_entry_exit) - as_bad (_("Missing .EXIT for a .ENTRY")); - -#ifdef OBJ_ELF - /* ELF needs to mark the end of each function so that it can compute - the size of the function (apparently its needed in the symbol table). */ - hppa_elf_mark_end_of_function (); -#endif - - within_procedure = FALSE; - demand_empty_rest_of_line (); - pa_undefine_label (); -} - -/* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero, - then create a new space entry to hold the information specified - by the parameters to the .SPACE directive. */ - -static sd_chain_struct * -pa_parse_space_stmt (space_name, create_flag) - char *space_name; - int create_flag; -{ - char *name, *ptemp, c; - char loadable, defined, private, sort; - int spnum, temp; - asection *seg = NULL; - sd_chain_struct *space; - - /* load default values */ - spnum = 0; - sort = 0; - loadable = TRUE; - defined = TRUE; - private = FALSE; - if (strcmp (space_name, "$TEXT$") == 0) - { - seg = pa_def_spaces[0].segment; - defined = pa_def_spaces[0].defined; - private = pa_def_spaces[0].private; - sort = pa_def_spaces[0].sort; - spnum = pa_def_spaces[0].spnum; - } - else if (strcmp (space_name, "$PRIVATE$") == 0) - { - seg = pa_def_spaces[1].segment; - defined = pa_def_spaces[1].defined; - private = pa_def_spaces[1].private; - sort = pa_def_spaces[1].sort; - spnum = pa_def_spaces[1].spnum; - } - - if (!is_end_of_statement ()) - { - print_errors = FALSE; - ptemp = input_line_pointer + 1; - /* First see if the space was specified as a number rather than - as a name. According to the PA assembly manual the rest of - the line should be ignored. */ - temp = pa_parse_number (&ptemp, 0); - if (temp >= 0) - { - spnum = temp; - input_line_pointer = ptemp; - } - else - { - while (!is_end_of_statement ()) - { - input_line_pointer++; - name = input_line_pointer; - c = get_symbol_end (); - if ((strncasecmp (name, "spnum", 5) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - spnum = get_absolute_expression (); - } - else if ((strncasecmp (name, "sort", 4) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - sort = get_absolute_expression (); - } - else if ((strncasecmp (name, "unloadable", 10) == 0)) - { - *input_line_pointer = c; - loadable = FALSE; - } - else if ((strncasecmp (name, "notdefined", 10) == 0)) - { - *input_line_pointer = c; - defined = FALSE; - } - else if ((strncasecmp (name, "private", 7) == 0)) - { - *input_line_pointer = c; - private = TRUE; - } - else - { - as_bad (_("Invalid .SPACE argument")); - *input_line_pointer = c; - if (!is_end_of_statement ()) - input_line_pointer++; - } - } - } - print_errors = TRUE; - } - - if (create_flag && seg == NULL) - seg = subseg_new (space_name, 0); - - /* If create_flag is nonzero, then create the new space with - the attributes computed above. Else set the values in - an already existing space -- this can only happen for - the first occurence of a built-in space. */ - if (create_flag) - space = create_new_space (space_name, spnum, loadable, defined, - private, sort, seg, 1); - else - { - space = is_defined_space (space_name); - SPACE_SPNUM (space) = spnum; - SPACE_DEFINED (space) = defined & 1; - SPACE_USER_DEFINED (space) = 1; - } - -#ifdef obj_set_section_attributes - obj_set_section_attributes (seg, defined, private, sort, spnum); -#endif - - return space; -} - -/* Handle a .SPACE pseudo-op; this switches the current space to the - given space, creating the new space if necessary. */ - -static void -pa_space (unused) - int unused; -{ - char *name, c, *space_name, *save_s; - int temp; - sd_chain_struct *sd_chain; - - if (within_procedure) - { - as_bad (_("Can\'t change spaces within a procedure definition. Ignored")); - ignore_rest_of_line (); - } - else - { - /* Check for some of the predefined spaces. FIXME: most of the code - below is repeated several times, can we extract the common parts - and place them into a subroutine or something similar? */ - /* FIXME Is this (and the next IF stmt) really right? - What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */ - if (strncmp (input_line_pointer, "$TEXT$", 6) == 0) - { - input_line_pointer += 6; - sd_chain = is_defined_space ("$TEXT$"); - if (sd_chain == NULL) - sd_chain = pa_parse_space_stmt ("$TEXT$", 1); - else if (SPACE_USER_DEFINED (sd_chain) == 0) - sd_chain = pa_parse_space_stmt ("$TEXT$", 0); - - current_space = sd_chain; - subseg_set (text_section, sd_chain->sd_last_subseg); - current_subspace - = pa_subsegment_to_subspace (text_section, - sd_chain->sd_last_subseg); - demand_empty_rest_of_line (); - return; - } - if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0) - { - input_line_pointer += 9; - sd_chain = is_defined_space ("$PRIVATE$"); - if (sd_chain == NULL) - sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1); - else if (SPACE_USER_DEFINED (sd_chain) == 0) - sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0); - - current_space = sd_chain; - subseg_set (data_section, sd_chain->sd_last_subseg); - current_subspace - = pa_subsegment_to_subspace (data_section, - sd_chain->sd_last_subseg); - demand_empty_rest_of_line (); - return; - } - if (!strncasecmp (input_line_pointer, - GDB_DEBUG_SPACE_NAME, - strlen (GDB_DEBUG_SPACE_NAME))) - { - input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME); - sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME); - if (sd_chain == NULL) - sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1); - else if (SPACE_USER_DEFINED (sd_chain) == 0) - sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0); - - current_space = sd_chain; - - { - asection *gdb_section - = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME); - - subseg_set (gdb_section, sd_chain->sd_last_subseg); - current_subspace - = pa_subsegment_to_subspace (gdb_section, - sd_chain->sd_last_subseg); - } - demand_empty_rest_of_line (); - return; - } - - /* It could be a space specified by number. */ - print_errors = 0; - save_s = input_line_pointer; - if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0) - { - if ((sd_chain = pa_find_space_by_number (temp))) - { - current_space = sd_chain; - - subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg); - current_subspace - = pa_subsegment_to_subspace (sd_chain->sd_seg, - sd_chain->sd_last_subseg); - demand_empty_rest_of_line (); - return; - } - } - - /* Not a number, attempt to create a new space. */ - print_errors = 1; - input_line_pointer = save_s; - name = input_line_pointer; - c = get_symbol_end (); - space_name = xmalloc (strlen (name) + 1); - strcpy (space_name, name); - *input_line_pointer = c; - - sd_chain = pa_parse_space_stmt (space_name, 1); - current_space = sd_chain; - - subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg); - current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg, - sd_chain->sd_last_subseg); - demand_empty_rest_of_line (); - } -} - -/* Switch to a new space. (I think). FIXME. */ - -static void -pa_spnum (unused) - int unused; -{ - char *name; - char c; - char *p; - sd_chain_struct *space; - - name = input_line_pointer; - c = get_symbol_end (); - space = is_defined_space (name); - if (space) - { - p = frag_more (4); - md_number_to_chars (p, SPACE_SPNUM (space), 4); - } - else - as_warn (_("Undefined space: '%s' Assuming space number = 0."), name); - - *input_line_pointer = c; - demand_empty_rest_of_line (); -} - -/* If VALUE is an exact power of two between zero and 2^31, then - return log2 (VALUE). Else return -1. */ - -static int -log2 (value) - int value; -{ - int shift = 0; - - while ((1 << shift) != value && shift < 32) - shift++; - - if (shift >= 32) - return -1; - else - return shift; -} - -/* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the - given subspace, creating the new subspace if necessary. - - FIXME. Should mirror pa_space more closely, in particular how - they're broken up into subroutines. */ - -static void -pa_subspace (create_new) - int create_new; -{ - char *name, *ss_name, *alias, c; - char loadable, code_only, common, dup_common, zero, sort; - int i, access, space_index, alignment, quadrant, applicable, flags; - sd_chain_struct *space; - ssd_chain_struct *ssd; - asection *section; - - if (current_space == NULL) - as_fatal (_("Must be in a space before changing or declaring subspaces.\n")); - - if (within_procedure) - { - as_bad (_("Can\'t change subspaces within a procedure definition. Ignored")); - ignore_rest_of_line (); - } - else - { - name = input_line_pointer; - c = get_symbol_end (); - ss_name = xmalloc (strlen (name) + 1); - strcpy (ss_name, name); - *input_line_pointer = c; - - /* Load default values. */ - sort = 0; - access = 0x7f; - loadable = 1; - common = 0; - dup_common = 0; - code_only = 0; - zero = 0; - space_index = ~0; - alignment = 1; - quadrant = 0; - alias = NULL; - - space = current_space; - if (create_new) - ssd = NULL; - else - ssd = is_defined_subspace (ss_name); - /* Allow user to override the builtin attributes of subspaces. But - only allow the attributes to be changed once! */ - if (ssd && SUBSPACE_DEFINED (ssd)) - { - subseg_set (ssd->ssd_seg, ssd->ssd_subseg); - current_subspace = ssd; - if (!is_end_of_statement ()) - as_warn (_("Parameters of an existing subspace can\'t be modified")); - demand_empty_rest_of_line (); - return; - } - else - { - /* A new subspace. Load default values if it matches one of - the builtin subspaces. */ - i = 0; - while (pa_def_subspaces[i].name) - { - if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0) - { - loadable = pa_def_subspaces[i].loadable; - common = pa_def_subspaces[i].common; - dup_common = pa_def_subspaces[i].dup_common; - code_only = pa_def_subspaces[i].code_only; - zero = pa_def_subspaces[i].zero; - space_index = pa_def_subspaces[i].space_index; - alignment = pa_def_subspaces[i].alignment; - quadrant = pa_def_subspaces[i].quadrant; - access = pa_def_subspaces[i].access; - sort = pa_def_subspaces[i].sort; - if (USE_ALIASES && pa_def_subspaces[i].alias) - alias = pa_def_subspaces[i].alias; - break; - } - i++; - } - } - - /* We should be working with a new subspace now. Fill in - any information as specified by the user. */ - if (!is_end_of_statement ()) - { - input_line_pointer++; - while (!is_end_of_statement ()) - { - name = input_line_pointer; - c = get_symbol_end (); - if ((strncasecmp (name, "quad", 4) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - quadrant = get_absolute_expression (); - } - else if ((strncasecmp (name, "align", 5) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - alignment = get_absolute_expression (); - if (log2 (alignment) == -1) - { - as_bad (_("Alignment must be a power of 2")); - alignment = 1; - } - } - else if ((strncasecmp (name, "access", 6) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - access = get_absolute_expression (); - } - else if ((strncasecmp (name, "sort", 4) == 0)) - { - *input_line_pointer = c; - input_line_pointer++; - sort = get_absolute_expression (); - } - else if ((strncasecmp (name, "code_only", 9) == 0)) - { - *input_line_pointer = c; - code_only = 1; - } - else if ((strncasecmp (name, "unloadable", 10) == 0)) - { - *input_line_pointer = c; - loadable = 0; - } - else if ((strncasecmp (name, "common", 6) == 0)) - { - *input_line_pointer = c; - common = 1; - } - else if ((strncasecmp (name, "dup_comm", 8) == 0)) - { - *input_line_pointer = c; - dup_common = 1; - } - else if ((strncasecmp (name, "zero", 4) == 0)) - { - *input_line_pointer = c; - zero = 1; - } - else if ((strncasecmp (name, "first", 5) == 0)) - as_bad (_("FIRST not supported as a .SUBSPACE argument")); - else - as_bad (_("Invalid .SUBSPACE argument")); - if (!is_end_of_statement ()) - input_line_pointer++; - } - } - - /* Compute a reasonable set of BFD flags based on the information - in the .subspace directive. */ - applicable = bfd_applicable_section_flags (stdoutput); - flags = 0; - if (loadable) - flags |= (SEC_ALLOC | SEC_LOAD); - if (code_only) - flags |= SEC_CODE; - if (common || dup_common) - flags |= SEC_IS_COMMON; - - flags |= SEC_RELOC | SEC_HAS_CONTENTS; - - /* This is a zero-filled subspace (eg BSS). */ - if (zero) - flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS); - - applicable &= flags; - - /* If this is an existing subspace, then we want to use the - segment already associated with the subspace. - - FIXME NOW! ELF BFD doesn't appear to be ready to deal with - lots of sections. It might be a problem in the PA ELF - code, I do not know yet. For now avoid creating anything - but the "standard" sections for ELF. */ - if (create_new) - section = subseg_force_new (ss_name, 0); - else if (ssd) - section = ssd->ssd_seg; - else if (alias) - section = subseg_new (alias, 0); - else if (!alias && USE_ALIASES) - { - as_warn (_("Ignoring subspace decl due to ELF BFD bugs.")); - demand_empty_rest_of_line (); - return; - } - else - section = subseg_new (ss_name, 0); - - if (zero) - seg_info (section)->bss = 1; - - /* Now set the flags. */ - bfd_set_section_flags (stdoutput, section, applicable); - - /* Record any alignment request for this section. */ - record_alignment (section, log2 (alignment)); - - /* Set the starting offset for this section. */ - bfd_set_section_vma (stdoutput, section, - pa_subspace_start (space, quadrant)); - - /* Now that all the flags are set, update an existing subspace, - or create a new one. */ - if (ssd) - - current_subspace = update_subspace (space, ss_name, loadable, - code_only, common, dup_common, - sort, zero, access, space_index, - alignment, quadrant, - section); - else - current_subspace = create_new_subspace (space, ss_name, loadable, - code_only, common, - dup_common, zero, sort, - access, space_index, - alignment, quadrant, section); - - demand_empty_rest_of_line (); - current_subspace->ssd_seg = section; - subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg); - } - SUBSPACE_DEFINED (current_subspace) = 1; -} - - -/* Create default space and subspace dictionaries. */ - -static void -pa_spaces_begin () -{ - int i; - - space_dict_root = NULL; - space_dict_last = NULL; - - i = 0; - while (pa_def_spaces[i].name) - { - char *name; - - /* Pick the right name to use for the new section. */ - if (pa_def_spaces[i].alias && USE_ALIASES) - name = pa_def_spaces[i].alias; - else - name = pa_def_spaces[i].name; - - pa_def_spaces[i].segment = subseg_new (name, 0); - create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum, - pa_def_spaces[i].loadable, pa_def_spaces[i].defined, - pa_def_spaces[i].private, pa_def_spaces[i].sort, - pa_def_spaces[i].segment, 0); - i++; - } - - i = 0; - while (pa_def_subspaces[i].name) - { - char *name; - int applicable, subsegment; - asection *segment = NULL; - sd_chain_struct *space; - - /* Pick the right name for the new section and pick the right - subsegment number. */ - if (pa_def_subspaces[i].alias && USE_ALIASES) - { - name = pa_def_subspaces[i].alias; - subsegment = pa_def_subspaces[i].subsegment; - } - else - { - name = pa_def_subspaces[i].name; - subsegment = 0; - } - - /* Create the new section. */ - segment = subseg_new (name, subsegment); - - - /* For SOM we want to replace the standard .text, .data, and .bss - sections with our own. We also want to set BFD flags for - all the built-in subspaces. */ - if (!strcmp (pa_def_subspaces[i].name, "$CODE$") && !USE_ALIASES) - { - text_section = segment; - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & (SEC_ALLOC | SEC_LOAD - | SEC_RELOC | SEC_CODE - | SEC_READONLY - | SEC_HAS_CONTENTS)); - } - else if (!strcmp (pa_def_subspaces[i].name, "$DATA$") && !USE_ALIASES) - { - data_section = segment; - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & (SEC_ALLOC | SEC_LOAD - | SEC_RELOC - | SEC_HAS_CONTENTS)); - - - } - else if (!strcmp (pa_def_subspaces[i].name, "$BSS$") && !USE_ALIASES) - { - bss_section = segment; - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & SEC_ALLOC); - } - else if (!strcmp (pa_def_subspaces[i].name, "$LIT$") && !USE_ALIASES) - { - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & (SEC_ALLOC | SEC_LOAD - | SEC_RELOC - | SEC_READONLY - | SEC_HAS_CONTENTS)); - } - else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$") - && !USE_ALIASES) - { - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & (SEC_ALLOC | SEC_LOAD - | SEC_RELOC - | SEC_READONLY - | SEC_HAS_CONTENTS)); - } - else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$") && !USE_ALIASES) - { - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, segment, - applicable & (SEC_ALLOC | SEC_LOAD - | SEC_RELOC - | SEC_READONLY - | SEC_HAS_CONTENTS)); - } - - /* Find the space associated with this subspace. */ - space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i]. - def_space_index].segment); - if (space == NULL) - { - as_fatal (_("Internal error: Unable to find containing space for %s."), - pa_def_subspaces[i].name); - } - - create_new_subspace (space, name, - pa_def_subspaces[i].loadable, - pa_def_subspaces[i].code_only, - pa_def_subspaces[i].common, - pa_def_subspaces[i].dup_common, - pa_def_subspaces[i].zero, - pa_def_subspaces[i].sort, - pa_def_subspaces[i].access, - pa_def_subspaces[i].space_index, - pa_def_subspaces[i].alignment, - pa_def_subspaces[i].quadrant, - segment); - i++; - } -} - - - -/* Create a new space NAME, with the appropriate flags as defined - by the given parameters. */ - -static sd_chain_struct * -create_new_space (name, spnum, loadable, defined, private, - sort, seg, user_defined) - char *name; - int spnum; - int loadable; - int defined; - int private; - int sort; - asection *seg; - int user_defined; -{ - sd_chain_struct *chain_entry; - - chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct)); - if (!chain_entry) - as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"), - name); - - SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1); - strcpy (SPACE_NAME (chain_entry), name); - SPACE_DEFINED (chain_entry) = defined; - SPACE_USER_DEFINED (chain_entry) = user_defined; - SPACE_SPNUM (chain_entry) = spnum; - - chain_entry->sd_seg = seg; - chain_entry->sd_last_subseg = -1; - chain_entry->sd_subspaces = NULL; - chain_entry->sd_next = NULL; - - /* Find spot for the new space based on its sort key. */ - if (!space_dict_last) - space_dict_last = chain_entry; - - if (space_dict_root == NULL) - space_dict_root = chain_entry; - else - { - sd_chain_struct *chain_pointer; - sd_chain_struct *prev_chain_pointer; - - chain_pointer = space_dict_root; - prev_chain_pointer = NULL; - - while (chain_pointer) - { - prev_chain_pointer = chain_pointer; - chain_pointer = chain_pointer->sd_next; - } - - /* At this point we've found the correct place to add the new - entry. So add it and update the linked lists as appropriate. */ - if (prev_chain_pointer) - { - chain_entry->sd_next = chain_pointer; - prev_chain_pointer->sd_next = chain_entry; - } - else - { - space_dict_root = chain_entry; - chain_entry->sd_next = chain_pointer; - } - - if (chain_entry->sd_next == NULL) - space_dict_last = chain_entry; - } - - /* This is here to catch predefined spaces which do not get - modified by the user's input. Another call is found at - the bottom of pa_parse_space_stmt to handle cases where - the user modifies a predefined space. */ -#ifdef obj_set_section_attributes - obj_set_section_attributes (seg, defined, private, sort, spnum); -#endif - - return chain_entry; -} - -/* Create a new subspace NAME, with the appropriate flags as defined - by the given parameters. - - Add the new subspace to the subspace dictionary chain in numerical - order as defined by the SORT entries. */ - -static ssd_chain_struct * -create_new_subspace (space, name, loadable, code_only, common, - dup_common, is_zero, sort, access, space_index, - alignment, quadrant, seg) - sd_chain_struct *space; - char *name; - int loadable, code_only, common, dup_common, is_zero; - int sort; - int access; - int space_index; - int alignment; - int quadrant; - asection *seg; -{ - ssd_chain_struct *chain_entry; - - chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct)); - if (!chain_entry) - as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name); - - SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1); - strcpy (SUBSPACE_NAME (chain_entry), name); - - /* Initialize subspace_defined. When we hit a .subspace directive - we'll set it to 1 which "locks-in" the subspace attributes. */ - SUBSPACE_DEFINED (chain_entry) = 0; - - chain_entry->ssd_subseg = USE_ALIASES ? pa_next_subseg (space) : 0; - chain_entry->ssd_seg = seg; - chain_entry->ssd_next = NULL; - - /* Find spot for the new subspace based on its sort key. */ - if (space->sd_subspaces == NULL) - space->sd_subspaces = chain_entry; - else - { - ssd_chain_struct *chain_pointer; - ssd_chain_struct *prev_chain_pointer; - - chain_pointer = space->sd_subspaces; - prev_chain_pointer = NULL; - - while (chain_pointer) - { - prev_chain_pointer = chain_pointer; - chain_pointer = chain_pointer->ssd_next; - } - - /* Now we have somewhere to put the new entry. Insert it and update - the links. */ - if (prev_chain_pointer) - { - chain_entry->ssd_next = chain_pointer; - prev_chain_pointer->ssd_next = chain_entry; - } - else - { - space->sd_subspaces = chain_entry; - chain_entry->ssd_next = chain_pointer; - } - } - -#ifdef obj_set_subsection_attributes - obj_set_subsection_attributes (seg, space->sd_seg, access, - sort, quadrant); -#endif - - return chain_entry; -} - -/* Update the information for the given subspace based upon the - various arguments. Return the modified subspace chain entry. */ - -static ssd_chain_struct * -update_subspace (space, name, loadable, code_only, common, dup_common, sort, - zero, access, space_index, alignment, quadrant, section) - sd_chain_struct *space; - char *name; - int loadable; - int code_only; - int common; - int dup_common; - int zero; - int sort; - int access; - int space_index; - int alignment; - int quadrant; - asection *section; -{ - ssd_chain_struct *chain_entry; - - chain_entry = is_defined_subspace (name); - -#ifdef obj_set_subsection_attributes - obj_set_subsection_attributes (section, space->sd_seg, access, - sort, quadrant); -#endif - - return chain_entry; -} - -/* Return the space chain entry for the space with the name NAME or - NULL if no such space exists. */ - -static sd_chain_struct * -is_defined_space (name) - char *name; -{ - sd_chain_struct *chain_pointer; - - for (chain_pointer = space_dict_root; - chain_pointer; - chain_pointer = chain_pointer->sd_next) - { - if (strcmp (SPACE_NAME (chain_pointer), name) == 0) - return chain_pointer; - } - - /* No mapping from segment to space was found. Return NULL. */ - return NULL; -} - -/* Find and return the space associated with the given seg. If no mapping - from the given seg to a space is found, then return NULL. - - Unlike subspaces, the number of spaces is not expected to grow much, - so a linear exhaustive search is OK here. */ - -static sd_chain_struct * -pa_segment_to_space (seg) - asection *seg; -{ - sd_chain_struct *space_chain; - - /* Walk through each space looking for the correct mapping. */ - for (space_chain = space_dict_root; - space_chain; - space_chain = space_chain->sd_next) - { - if (space_chain->sd_seg == seg) - return space_chain; - } - - /* Mapping was not found. Return NULL. */ - return NULL; -} - -/* Return the space chain entry for the subspace with the name NAME or - NULL if no such subspace exists. - - Uses a linear search through all the spaces and subspaces, this may - not be appropriate if we ever being placing each function in its - own subspace. */ - -static ssd_chain_struct * -is_defined_subspace (name) - char *name; -{ - sd_chain_struct *space_chain; - ssd_chain_struct *subspace_chain; - - /* Walk through each space. */ - for (space_chain = space_dict_root; - space_chain; - space_chain = space_chain->sd_next) - { - /* Walk through each subspace looking for a name which matches. */ - for (subspace_chain = space_chain->sd_subspaces; - subspace_chain; - subspace_chain = subspace_chain->ssd_next) - if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0) - return subspace_chain; - } - - /* Subspace wasn't found. Return NULL. */ - return NULL; -} - -/* Find and return the subspace associated with the given seg. If no - mapping from the given seg to a subspace is found, then return NULL. - - If we ever put each procedure/function within its own subspace - (to make life easier on the compiler and linker), then this will have - to become more efficient. */ - -static ssd_chain_struct * -pa_subsegment_to_subspace (seg, subseg) - asection *seg; - subsegT subseg; -{ - sd_chain_struct *space_chain; - ssd_chain_struct *subspace_chain; - - /* Walk through each space. */ - for (space_chain = space_dict_root; - space_chain; - space_chain = space_chain->sd_next) - { - if (space_chain->sd_seg == seg) - { - /* Walk through each subspace within each space looking for - the correct mapping. */ - for (subspace_chain = space_chain->sd_subspaces; - subspace_chain; - subspace_chain = subspace_chain->ssd_next) - if (subspace_chain->ssd_subseg == (int) subseg) - return subspace_chain; - } - } - - /* No mapping from subsegment to subspace found. Return NULL. */ - return NULL; -} - -/* Given a number, try and find a space with the name number. - - Return a pointer to a space dictionary chain entry for the space - that was found or NULL on failure. */ - -static sd_chain_struct * -pa_find_space_by_number (number) - int number; -{ - sd_chain_struct *space_chain; - - for (space_chain = space_dict_root; - space_chain; - space_chain = space_chain->sd_next) - { - if (SPACE_SPNUM (space_chain) == (unsigned int) number) - return space_chain; - } - - /* No appropriate space found. Return NULL. */ - return NULL; -} - -/* Return the starting address for the given subspace. If the starting - address is unknown then return zero. */ - -static unsigned int -pa_subspace_start (space, quadrant) - sd_chain_struct *space; - int quadrant; -{ -#ifdef OBJ_SOM - /* FIXME. Assumes everyone puts read/write data at 0x4000000, this - is not correct for the PA OSF1 port. */ - if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1) - return 0x40000000; - else if (space->sd_seg == data_section && quadrant == 1) - return 0x40000000; - else - return 0; -#endif - return 0; -} - -/* FIXME. Needs documentation. */ -static int -pa_next_subseg (space) - sd_chain_struct *space; -{ - - space->sd_last_subseg++; - return space->sd_last_subseg; -} - -/* Helper function for pa_stringer. Used to find the end of - a string. */ - -static unsigned int -pa_stringer_aux (s) - char *s; -{ - unsigned int c = *s & CHAR_MASK; - - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - switch (c) - { - case '\"': - c = NOT_A_CHAR; - break; - default: - break; - } - return c; -} - -/* Handle a .STRING type pseudo-op. */ - -static void -pa_stringer (append_zero) - int append_zero; -{ - char *s, num_buf[4]; - unsigned int c; - int i; - - /* Preprocess the string to handle PA-specific escape sequences. - For example, \xDD where DD is a hexidecimal number should be - changed to \OOO where OOO is an octal number. */ - - /* Skip the opening quote. */ - s = input_line_pointer + 1; - - while (is_a_char (c = pa_stringer_aux (s++))) - { - if (c == '\\') - { - c = *s; - switch (c) - { - /* Handle \x<num>. */ - case 'x': - { - unsigned int number; - int num_digit; - char dg; - char *s_start = s; - - /* Get pas the 'x'. */ - s++; - for (num_digit = 0, number = 0, dg = *s; - num_digit < 2 - && (isdigit (dg) || (dg >= 'a' && dg <= 'f') - || (dg >= 'A' && dg <= 'F')); - num_digit++) - { - if (isdigit (dg)) - number = number * 16 + dg - '0'; - else if (dg >= 'a' && dg <= 'f') - number = number * 16 + dg - 'a' + 10; - else - number = number * 16 + dg - 'A' + 10; - - s++; - dg = *s; - } - if (num_digit > 0) - { - switch (num_digit) - { - case 1: - sprintf (num_buf, "%02o", number); - break; - case 2: - sprintf (num_buf, "%03o", number); - break; - } - for (i = 0; i <= num_digit; i++) - s_start[i] = num_buf[i]; - } - break; - } - /* This might be a "\"", skip over the escaped char. */ - default: - s++; - break; - } - } - } - stringer (append_zero); - pa_undefine_label (); -} - -/* Handle a .VERSION pseudo-op. */ - -static void -pa_version (unused) - int unused; -{ - obj_version (0); - pa_undefine_label (); -} - -#ifdef OBJ_SOM - -/* Handle a .COMPILER pseudo-op. */ - -static void -pa_compiler (unused) - int unused; -{ - obj_som_compiler (0); - pa_undefine_label (); -} - -#endif - -/* Handle a .COPYRIGHT pseudo-op. */ - -static void -pa_copyright (unused) - int unused; -{ - obj_copyright (0); - pa_undefine_label (); -} - -/* Just like a normal cons, but when finished we have to undefine - the latest space label. */ - -static void -pa_cons (nbytes) - int nbytes; -{ - cons (nbytes); - pa_undefine_label (); -} - -/* Switch to the data space. As usual delete our label. */ - -static void -pa_data (unused) - int unused; -{ - current_space = is_defined_space ("$PRIVATE$"); - current_subspace - = pa_subsegment_to_subspace (current_space->sd_seg, 0); - s_data (0); - pa_undefine_label (); -} - -/* Like float_cons, but we need to undefine our label. */ - -static void -pa_float_cons (float_type) - int float_type; -{ - float_cons (float_type); - pa_undefine_label (); -} - -/* Like s_fill, but delete our label when finished. */ - -static void -pa_fill (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - s_fill (0); - pa_undefine_label (); -} - -/* Like lcomm, but delete our label when finished. */ - -static void -pa_lcomm (needs_align) - int needs_align; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - s_lcomm (needs_align); - pa_undefine_label (); -} - -/* Like lsym, but delete our label when finished. */ - -static void -pa_lsym (unused) - int unused; -{ - /* We must have a valid space and subspace. */ - pa_check_current_space_and_subspace (); - - s_lsym (0); - pa_undefine_label (); -} - -/* Switch to the text space. Like s_text, but delete our - label when finished. */ -static void -pa_text (unused) - int unused; -{ - current_space = is_defined_space ("$TEXT$"); - current_subspace - = pa_subsegment_to_subspace (current_space->sd_seg, 0); - - s_text (0); - pa_undefine_label (); -} - -/* On the PA relocations which involve function symbols must not be - adjusted. This so that the linker can know when/how to create argument - relocation stubs for indirect calls and calls to static functions. - - "T" field selectors create DLT relative fixups for accessing - globals and statics in PIC code; each DLT relative fixup creates - an entry in the DLT table. The entries contain the address of - the final target (eg accessing "foo" would create a DLT entry - with the address of "foo"). - - Unfortunately, the HP linker doesn't take into account any addend - when generating the DLT; so accessing $LIT$+8 puts the address of - $LIT$ into the DLT rather than the address of $LIT$+8. - - The end result is we can't perform relocation symbol reductions for - any fixup which creates entries in the DLT (eg they use "T" field - selectors). - - Reject reductions involving symbols with external scope; such - reductions make life a living hell for object file editors. - - FIXME. Also reject R_HPPA relocations which are 32bits wide in - the code space. The SOM BFD backend doesn't know how to pull the - right bits out of an instruction. */ - -int -hppa_fix_adjustable (fixp) - fixS *fixp; -{ - struct hppa_fix_struct *hppa_fix; - - hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data; - -#ifdef OBJ_SOM - /* Reject reductions of symbols in 32bit relocs. */ - if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32) - return 0; - - /* Reject reductions of symbols in sym1-sym2 expressions when - the fixup will occur in a CODE subspace. - - XXX FIXME: Long term we probably want to reject all of these; - for example reducing in the debug section would lose if we ever - supported using the optimizing hp linker. */ - if (fixp->fx_addsy - && fixp->fx_subsy - && (hppa_fix->segment->flags & SEC_CODE)) - { - /* Apparently sy_used_in_reloc never gets set for sub symbols. */ - symbol_mark_used_in_reloc (fixp->fx_subsy); - return 0; - } - - /* We can't adjust any relocs that use LR% and RR% field selectors. - That confuses the HP linker. */ - if (hppa_fix->fx_r_field == e_lrsel - || hppa_fix->fx_r_field == e_rrsel - || hppa_fix->fx_r_field == e_nlrsel) - return 0; -#endif - - /* Reject reductions of symbols in DLT relative relocs, - relocations with plabels. */ - if (hppa_fix->fx_r_field == e_tsel - || hppa_fix->fx_r_field == e_ltsel - || hppa_fix->fx_r_field == e_rtsel - || hppa_fix->fx_r_field == e_psel - || hppa_fix->fx_r_field == e_rpsel - || hppa_fix->fx_r_field == e_lpsel) - return 0; - - if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy)) - return 0; - - /* Reject absolute calls (jumps). */ - if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL) - return 0; - - /* Reject reductions of function symbols. */ - if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy)) - return 1; - - return 0; -} - -/* Return nonzero if the fixup in FIXP will require a relocation, - even it if appears that the fixup could be completely handled - within GAS. */ - -int -hppa_force_relocation (fixp) - fixS *fixp; -{ - struct hppa_fix_struct *hppa_fixp; - int distance; - - hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data; -#ifdef OBJ_SOM - if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT - || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB - || fixp->fx_r_type == R_HPPA_END_BRTAB - || fixp->fx_r_type == R_HPPA_BEGIN_TRY - || fixp->fx_r_type == R_HPPA_END_TRY - || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL - && (hppa_fixp->segment->flags & SEC_CODE) != 0)) - return 1; -#endif - -#define arg_reloc_stub_needed(CALLER, CALLEE) \ - ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER))) - - /* It is necessary to force PC-relative calls/jumps to have a relocation - entry if they're going to need either a argument relocation or long - call stub. FIXME. Can't we need the same for absolute calls? */ - if (fixp->fx_pcrel && fixp->fx_addsy - && (arg_reloc_stub_needed ((long) ((obj_symbol_type *) - symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc, - hppa_fixp->fx_arg_reloc))) - return 1; - distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy) - - md_pcrel_from (fixp)); - /* Now check and see if we're going to need a long-branch stub. */ - if (fixp->fx_r_type == R_HPPA_PCREL_CALL - && (distance > 262143 || distance < -262144)) - return 1; - - if (fixp->fx_r_type == R_HPPA_ABS_CALL) - return 1; -#undef arg_reloc_stub_needed - - /* No need (yet) to force another relocations to be emitted. */ - return 0; -} - -/* Now for some ELF specific code. FIXME. */ -#ifdef OBJ_ELF -/* Mark the end of a function so that it's possible to compute - the size of the function in hppa_elf_final_processing. */ - -static void -hppa_elf_mark_end_of_function () -{ - /* ELF does not have EXIT relocations. All we do is create a - temporary symbol marking the end of the function. */ - char *name = (char *) - xmalloc (strlen ("L$\001end_") + - strlen (S_GET_NAME (last_call_info->start_symbol)) + 1); - - if (name) - { - symbolS *symbolP; - - strcpy (name, "L$\001end_"); - strcat (name, S_GET_NAME (last_call_info->start_symbol)); - - /* If we have a .exit followed by a .procend, then the - symbol will have already been defined. */ - symbolP = symbol_find (name); - if (symbolP) - { - /* The symbol has already been defined! This can - happen if we have a .exit followed by a .procend. - - This is *not* an error. All we want to do is free - the memory we just allocated for the name and continue. */ - xfree (name); - } - else - { - /* symbol value should be the offset of the - last instruction of the function */ - symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4), - frag_now); - - assert (symbolP); - S_CLEAR_EXTERNAL (symbolP); - symbol_table_insert (symbolP); - } - - if (symbolP) - last_call_info->end_symbol = symbolP; - else - as_bad (_("Symbol '%s' could not be created."), name); - - } - else - as_bad (_("No memory for symbol name.")); - -} - -/* For ELF, this function serves one purpose: to setup the st_size - field of STT_FUNC symbols. To do this, we need to scan the - call_info structure list, determining st_size in by taking the - difference in the address of the beginning/end marker symbols. */ - -void -elf_hppa_final_processing () -{ - struct call_info *call_info_pointer; - - for (call_info_pointer = call_info_root; - call_info_pointer; - call_info_pointer = call_info_pointer->ci_next) - { - elf_symbol_type *esym - = ((elf_symbol_type *) - symbol_get_bfdsym (call_info_pointer->start_symbol)); - esym->internal_elf_sym.st_size = - S_GET_VALUE (call_info_pointer->end_symbol) - - S_GET_VALUE (call_info_pointer->start_symbol) + 4; - } -} -#endif |