/* 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 #include #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" #if defined (OBJ_ELF) && defined (OBJ_SOM) error only one of OBJ_ELF and OBJ_SOM can be defined #endif /* If we are using ELF, then we probably can support dwarf2 debug records. Furthermore, if we are supporting dwarf2 debug records, then we want to use the assembler support for compact line numbers. */ #ifdef OBJ_ELF #include "dwarf2dbg.h" struct dwarf2_line_info debug_line; #endif /* A "convient" place to put object file dependencies which do not need to be seen outside of tc-hppa.c. */ #ifdef OBJ_ELF /* Object file formats specify relocation types. */ typedef elf_hppa_reloc_type reloc_type; /* Object file formats specify BFD symbol types. */ typedef elf_symbol_type obj_symbol_type; #ifdef BFD64 /* How to generate a relocation. */ #define hppa_gen_reloc_type _bfd_elf64_hppa_gen_reloc_type #else #define hppa_gen_reloc_type _bfd_elf32_hppa_gen_reloc_type #endif /* 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 #define UNWIND_SECTION_NAME ".PARISC.unwind" #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 /* 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; /* Whether or not we saw a truncation request on an fcnv insn. */ int trunc; /* 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; }; #ifdef OBJ_SOM /* 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; /* 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; /* 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; }; #endif /* 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 { struct symbol *lss_label; #ifdef OBJ_SOM sd_chain_struct *lss_space; #endif #ifdef OBJ_ELF segT lss_segment; #endif struct label_symbol_struct *lss_next; } label_symbol_struct; /* 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. */ #ifdef OBJ_SOM static void pa_check_current_space_and_subspace PARAMS ((void)); #endif 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 int pa_parse_cmpb_64_cmpltr PARAMS ((char **)); static int pa_parse_cmpib_64_cmpltr PARAMS ((char **)); static int pa_parse_addb_64_cmpltr PARAMS ((char **)); 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)); 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_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)); #ifdef OBJ_SOM static void pa_compiler PARAMS ((int)); static void pa_align PARAMS ((int)); static void pa_space PARAMS ((int)); static void pa_spnum PARAMS ((int)); static void pa_subspace PARAMS ((int)); 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 sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int)); static int pa_next_subseg PARAMS ((sd_chain_struct *)); static void pa_spaces_begin PARAMS ((void)); #endif 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 int log2 PARAMS ((int)); static unsigned int pa_stringer_aux PARAMS ((char *)); static fp_operand_format pa_parse_fp_cnv_format PARAMS ((char **s)); static int pa_parse_ftest_gfx_completer PARAMS ((char **)); #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. */ #ifdef OBJ_SOM /* 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; #endif /* 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. */ #ifdef OBJ_SOM {"align", pa_align, 8}, #endif #ifdef OBJ_ELF {"align", s_align_bytes, 8}, #endif {"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'}, {"dword", pa_cons, 8}, {"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}, #ifdef OBJ_ELF { "file", dwarf2_directive_file }, #endif {"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}, #ifdef OBJ_ELF { "loc", dwarf2_directive_loc }, #endif {"long", pa_cons, 4}, {"lsym", pa_lsym, 0}, #ifdef OBJ_SOM {"nsubspa", pa_subspace, 1}, #endif {"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'}, #ifdef OBJ_SOM {"space", pa_space, 0}, {"spnum", pa_spnum, 0}, #endif {"string", pa_stringer, 0}, {"stringz", pa_stringer, 1}, #ifdef OBJ_SOM {"subspa", pa_subspace, 0}, #endif {"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; /* Nonzero when strict syntax checking is enabled. Zero otherwise. Each opcode in the table has a flag which indicates whether or not strict syntax checking should be enabled for that instruction. */ static int strict = 0; #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 which has the value . Space and control registers are handled in a similar manner, but use %sr and %cr as their predefined names. Likewise for the floating point registers, but of the form %fr. Floating point registers have additional predefined names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which again have the value . 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}, {"ltp", e_ltpsel}, {"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}, {"rtp", e_rtpsel}, {"t", e_tsel}, }; #ifdef OBJ_SOM /* 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, SUBSEG_CODE}, {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, SUBSEG_DATA}, {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, SUBSEG_LIT}, {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, SUBSEG_MILLI}, {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, SUBSEG_BSS}, {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}, {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL}, {NULL, 0, 0, 0, 0, 0, ASEC_NULL} }; /* Misc local definitions used by the assembler. */ /* 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 #endif /* 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') /* 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")); } /* 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; for (label_chain = label_symbols_rootp; label_chain; label_chain = label_chain->lss_next) { #ifdef OBJ_SOM if (current_space == label_chain->lss_space && label_chain->lss_label) return label_chain; #endif #ifdef OBJ_ELF if (now_seg == label_chain->lss_segment && label_chain->lss_label) return label_chain; #endif } 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 (); 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; #ifdef OBJ_SOM label_chain->lss_space = current_space; #endif #ifdef OBJ_ELF label_chain->lss_segment = now_seg; #endif 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; for (label_chain = label_symbols_rootp; label_chain; label_chain = label_chain->lss_next) { if (1 #ifdef OBJ_SOM && current_space == label_chain->lss_space && label_chain->lss_label #endif #ifdef OBJ_ELF && now_seg == label_chain->lss_segment && label_chain->lss_label #endif ) { /* 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, size * 8, 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; } #ifdef OBJ_SOM pa_spaces_begin (); #endif 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.")); #ifdef OBJ_SOM /* 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); #endif #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); #ifdef OBJ_ELF if (debug_type == DEBUG_DWARF2) { bfd_vma addr; /* First update the notion of the current source line. */ dwarf2_where (&debug_line); /* We want the offset of the start of this instruction within the the current frag. */ addr = frag_now->fr_address + frag_now_fix () - 4; /* And record the information. */ dwarf2_gen_line_info (addr, &debug_line); } #endif } /* 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; #ifdef OBJ_SOM /* We must have a valid space and subspace. */ pa_check_current_space_and_subspace (); #endif /* Convert everything up to the first whitespace character into lower case. */ for (s = str; *s != ' ' && *s != '\t' && *s != '\n' && *s != '\0'; s++) if (isupper (*s)) *s = tolower (*s); /* 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; /* 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; strict = (insn->flags & FLAG_STRICT); 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) { /* Absorb white space in instruction. */ while (*s == ' ' || *s == '\t') s++; 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 '^': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; num = pa_parse_number (&s, 0); CHECK_FIELD (num, 31, 0, 0); INSERT_FIELD_AND_CONTINUE (opcode, num, 21); /* Handle %sar or %cr11. No bits get set, we just verify that it is there. */ case '!': /* Skip whitespace before register. */ while (*s == ' ' || *s == '\t') s = s + 1; if (!strncasecmp(s, "%sar", 4)) { s += 4; continue; } else if (!strncasecmp(s, "%cr11", 5)) { s += 5; continue; } break; /* Handle a 5 bit register field at 15. */ case 'x': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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 't': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; num = pa_parse_number (&s, 0); CHECK_FIELD (num, 31, 0, 0); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Handle a 5 bit register field at 10 and 15. */ case 'a': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; num = pa_parse_number (&s, 0); CHECK_FIELD (num, 31, 0, 0); opcode |= num << 16; INSERT_FIELD_AND_CONTINUE (opcode, num, 21); /* Handle a 5 bit field length at 31. */ case 'T': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; /* When in strict mode, we want to just reject this match instead of giving an out of range error. */ CHECK_FIELD (num, 15, -16, strict); 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; /* When in strict mode, we want to just reject this match instead of giving an out of range error. */ CHECK_FIELD (num, 15, -16, strict) 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 31, 0, 0); INSERT_FIELD_AND_CONTINUE (opcode, num, strict); /* Handle an unsigned 5 bit immediate at 15. */ case 'R': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 31, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 16); /* Handle an unsigned 10 bit immediate at 15. */ case 'U': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 1023, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 16); /* Handle a 2 bit space identifier at 17. */ case 's': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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 all completers. */ case 'c': switch (*++args) { /* Handle a completer for an indexing load or store. */ case 'x': { 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 ", 2) == 0) || (strncasecmp (s, "s,", 2) == 0)) uu = 1; /* When in strict mode this is a match failure. */ else if (strict) { s--; break; } 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 'm': case 'q': case 'J': case 'e': { int a = 0; int m = 0; if (*s == ',') { int found = 0; s++; if (strncasecmp (s, "ma", 2) == 0) { a = 0; m = 1; found = 1; } else if (strncasecmp (s, "mb", 2) == 0) { a = 1; m = 1; found = 1; } /* When in strict mode, pass through for cache op. */ if (!found && strict) s--; else { if (!found) as_bad (_("Invalid Short Load/Store Completer.")); s += 2; } } /* If we did not get a ma/mb completer, then we do not consider this a positive match for 'ce'. */ else if (*args == 'e') break; /* 'J', 'm' and 'q' are the same, except for where they encode the before/after field. */ if (*args == 'm') { opcode |= m << 5; INSERT_FIELD_AND_CONTINUE (opcode, a, 13); } else if (*args == 'q') { opcode |= m << 3; INSERT_FIELD_AND_CONTINUE (opcode, a, 2); } else if (*args == 'J') { /* M bit is explicit in the major opcode. */ INSERT_FIELD_AND_CONTINUE (opcode, a, 2); } else if (*args == 'e') { /* Gross! Hide these values in the immediate field of the instruction, then pull them out later. */ opcode |= m << 8; opcode |= a << 9; continue; } } /* Handle a stbys completer. */ case 's': { 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 ", 2) == 0) || (strncasecmp (s, "b,", 2) == 0)) a = 0; else if (strncasecmp (s, "e", 1) == 0) a = 1; /* When in strict mode this is a match failure. */ else if (strict) { s--; break; } 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 load cache hint completer. */ case 'c': cmpltr = 0; if (!strncmp(s, ",sl", 3)) { s += 3; cmpltr = 2; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 10); /* Handle store cache hint completer. */ case 'C': cmpltr = 0; if (!strncmp(s, ",sl", 3)) { s += 3; cmpltr = 2; } else if (!strncmp(s, ",bc", 3)) { s += 3; cmpltr = 1; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 10); /* Handle load and clear cache hint completer. */ case 'd': cmpltr = 0; if (!strncmp(s, ",co", 3)) { s += 3; cmpltr = 1; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 10); /* Handle load ordering completer. */ case 'o': if (strncmp(s, ",o", 2) != 0) break; s += 2; continue; /* Handle a branch gate completer. */ case 'g': if (strncasecmp (s, ",gate", 5) != 0) break; s += 5; continue; /* Handle a branch link and push completer. */ case 'p': if (strncasecmp (s, ",l,push", 7) != 0) break; s += 7; continue; /* Handle a branch link completer. */ case 'l': if (strncasecmp (s, ",l", 2) != 0) break; s += 2; continue; /* Handle a branch pop completer. */ case 'P': if (strncasecmp (s, ",pop", 4) != 0) break; s += 4; continue; /* Handle a local processor completer. */ case 'L': if (strncasecmp (s, ",l", 2) != 0) break; s += 2; continue; /* Handle a PROBE read/write completer. */ case 'w': flag = 0; if (!strncasecmp (s, ",w", 2)) { flag = 1; s += 2; } else if (!strncasecmp (s, ",r", 2)) { flag = 0; s += 2; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 6); /* Handle MFCTL wide completer. */ case 'W': if (strncasecmp (s, ",w", 2) != 0) break; s += 2; continue; /* Handle an RFI restore completer. */ case 'r': flag = 0; if (!strncasecmp (s, ",r", 2)) { flag = 5; s += 2; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 5); /* 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 intermediate/final completer for DCOR. */ case 'i': flag = 0; if (!strncasecmp (s, ",i", 2)) { flag = 1; s += 2; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 6); /* Handle zero/sign extension completer. */ case 'z': flag = 1; if (!strncasecmp (s, ",z", 2)) { flag = 0; s += 2; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 10); /* Handle add completer. */ case 'a': flag = 1; if (!strncasecmp (s, ",l", 2)) { flag = 2; s += 2; } else if (!strncasecmp (s, ",tsv", 4)) { flag = 3; s += 4; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 10); /* Handle 64 bit carry for ADD. */ case 'Y': flag = 0; if (!strncasecmp (s, ",dc,tsv", 7) || !strncasecmp (s, ",tsv,dc", 7)) { flag = 1; s += 7; } else if (!strncasecmp (s, ",dc", 3)) { flag = 0; s += 3; } else break; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle 32 bit carry for ADD. */ case 'y': flag = 0; if (!strncasecmp (s, ",c,tsv", 6) || !strncasecmp (s, ",tsv,c", 6)) { flag = 1; s += 6; } else if (!strncasecmp (s, ",c", 2)) { flag = 0; s += 2; } else break; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle trap on signed overflow. */ case 'v': flag = 0; if (!strncasecmp (s, ",tsv", 4)) { flag = 1; s += 4; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle trap on condition and overflow. */ case 't': flag = 0; if (!strncasecmp (s, ",tc,tsv", 7) || !strncasecmp (s, ",tsv,tc", 7)) { flag = 1; s += 7; } else if (!strncasecmp (s, ",tc", 3)) { flag = 0; s += 3; } else break; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle 64 bit borrow for SUB. */ case 'B': flag = 0; if (!strncasecmp (s, ",db,tsv", 7) || !strncasecmp (s, ",tsv,db", 7)) { flag = 1; s += 7; } else if (!strncasecmp (s, ",db", 3)) { flag = 0; s += 3; } else break; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle 32 bit borrow for SUB. */ case 'b': flag = 0; if (!strncasecmp (s, ",b,tsv", 6) || !strncasecmp (s, ",tsv,b", 6)) { flag = 1; s += 6; } else if (!strncasecmp (s, ",b", 2)) { flag = 0; s += 2; } else break; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle trap condition completer for UADDCM. */ case 'T': flag = 0; if (!strncasecmp (s, ",tc", 3)) { flag = 1; s += 3; } INSERT_FIELD_AND_CONTINUE (opcode, flag, 6); /* Handle signed/unsigned at 21. */ case 'S': { int sign = 1; if (strncasecmp (s, ",s", 2) == 0) { sign = 1; s += 2; } else if (strncasecmp (s, ",u", 2) == 0) { sign = 0; s += 2; } INSERT_FIELD_AND_CONTINUE (opcode, sign, 10); } /* Handle left/right combination at 17:18. */ case 'h': if (*s++ == ',') { int lr = 0; if (*s == 'r') lr = 2; else if (*s == 'l') lr = 0; else as_bad(_("Invalid left/right combination completer")); s++; INSERT_FIELD_AND_CONTINUE (opcode, lr, 13); } else as_bad(_("Invalid left/right combination completer")); break; /* Handle saturation at 24:25. */ case 'H': { int sat = 3; if (strncasecmp (s, ",ss", 3) == 0) { sat = 1; s += 3; } else if (strncasecmp (s, ",us", 3) == 0) { sat = 0; s += 3; } INSERT_FIELD_AND_CONTINUE (opcode, sat, 6); } /* Handle permutation completer. */ case '*': if (*s++ == ',') { int permloc[4]; int perm = 0; int i = 0; permloc[0] = 13; permloc[1] = 10; permloc[2] = 8; permloc[3] = 6; for (; i < 4; i++) { switch (*s++) { case '0': perm = 0; break; case '1': perm = 1; break; case '2': perm = 2; break; case '3': perm = 3; break; default: as_bad(_("Invalid permutation completer")); } opcode |= perm << permloc[i]; } continue; } else as_bad(_("Invalid permutation completer")); break; default: abort (); } break; /* Handle all conditions. */ case '?': { args++; switch (*args) { /* Handle FP compare conditions. */ case 'f': cond = pa_parse_fp_cmp_cond (&s); INSERT_FIELD_AND_CONTINUE (opcode, cond, 0); /* Handle an add condition. */ case 'A': case 'a': cmpltr = 0; flag = 0; if (*s == ',') { s++; /* 64 bit conditions. */ if (*args == 'A') { if (*s == '*') s++; else break; } else if (*s == '*') break; name = 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; } /* ",*" is a valid condition. */ else if (*args == 'a') as_bad (_("Invalid Add Condition: %s"), name); *s = c; } opcode |= cmpltr << 13; INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); /* Handle non-negated add and branch condition. */ case 'd': cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1); if (cmpltr < 0) { as_bad (_("Invalid Add and Branch Condition: %c"), *s); cmpltr = 0; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); /* Handle 64 bit wide-mode add and branch condition. */ case 'W': cmpltr = pa_parse_addb_64_cmpltr (&s); if (cmpltr < 0) { as_bad (_("Invalid Add and Branch Condition: %c"), *s); cmpltr = 0; } else { /* Negated condition requires an opcode change. */ opcode |= (cmpltr & 8) << 24; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr & 7, 13); /* Handle a negated or non-negated add and branch 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 branch on bit conditions. */ case 'B': case 'b': cmpltr = 0; if (*s == ',') { s++; if (*args == 'B') { if (*s == '*') s++; else break; } else if (*s == '*') break; 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 compare/subtract condition. */ case 'S': case 's': cmpltr = 0; flag = 0; if (*s == ',') { s++; /* 64 bit conditions. */ if (*args == 'S') { if (*s == '*') s++; else break; } else if (*s == '*') break; name = 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; } /* ",*" is a valid condition. */ else if (*args != 'S') as_bad (_("Invalid Compare/Subtract Condition: %s"), name); *s = c; } opcode |= cmpltr << 13; INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); /* Handle a non-negated compare condition. */ case 't': 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 32 bit compare and branch condition. */ case 'n': 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 and Branch Condition.")); cmpltr = 0; } else { /* Negated condition requires an opcode change. */ opcode |= 1 << 27; } } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); /* Handle a 64 bit compare and branch condition. */ case 'N': cmpltr = pa_parse_cmpb_64_cmpltr (&s); if (cmpltr >= 0) { /* Negated condition requires an opcode change. */ opcode |= (cmpltr & 8) << 26; } else /* Not a 64 bit cond. Give 32 bit a chance. */ break; INSERT_FIELD_AND_CONTINUE (opcode, cmpltr & 7, 13); /* Handle a 64 bit cmpib condition. */ case 'Q': cmpltr = pa_parse_cmpib_64_cmpltr (&s); if (cmpltr < 0) /* Not a 64 bit cond. Give 32 bit a chance. */ break; INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); /* Handle a logical instruction condition. */ case 'L': case 'l': cmpltr = 0; flag = 0; if (*s == ',') { s++; /* 64 bit conditions. */ if (*args == 'L') { if (*s == '*') s++; else break; } else if (*s == '*') break; name = 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; } /* ",*" is a valid condition. */ else if (*args != 'L') as_bad (_("Invalid Logical Instruction Condition.")); *s = c; } opcode |= cmpltr << 13; INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); /* Handle a shift/extract/deposit condition. */ case 'X': case 'x': case 'y': cmpltr = 0; if (*s == ',') { save_s = s++; /* 64 bit conditions. */ if (*args == 'X') { if (*s == '*') s++; else break; } else if (*s == '*') break; name = 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 == 'y') { *s = c; s = save_s; continue; } /* ",*" is a valid condition. */ else if (*args != 'X') as_bad (_("Invalid Shift/Extract/Deposit Condition.")); *s = c; } INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13); /* Handle a unit instruction condition. */ case 'U': case 'u': cmpltr = 0; flag = 0; if (*s == ',') { s++; /* 64 bit conditions. */ if (*args == 'U') { if (*s == '*') s++; else break; } else if (*s == '*') break; 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 if (strncasecmp (s, "swz", 3) == 0) { cmpltr = 1; flag = 0; s += 3; } else if (strncasecmp (s, "swc", 3) == 0) { cmpltr = 5; flag = 0; s += 3; } else if (strncasecmp (s, "nwz", 3) == 0) { cmpltr = 1; flag = 1; s += 3; } else if (strncasecmp (s, "nwc", 3) == 0) { cmpltr = 5; flag = 1; s += 3; } /* ",*" is a valid condition. */ else if (*args != 'U') as_bad (_("Invalid Unit Instruction Condition.")); } opcode |= cmpltr << 13; INSERT_FIELD_AND_CONTINUE (opcode, flag, 12); default: abort (); } break; } /* 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 ,%r2 completer for new syntax branches. */ case 'L': if (*s == ',' && strncasecmp (s + 1, "%r2", 3) == 0) s += 4; else if (*s == ',' && strncasecmp (s + 1, "%rp", 3) == 0) s += 4; else break; continue; /* Handle 3 bit entry into the fp compare array. Valid values are 0..6 inclusive. */ case 'h': get_expression (s); s = expr_end; if (the_insn.exp.X_op == O_constant) { num = evaluate_absolute (&the_insn); CHECK_FIELD (num, 6, 0, 0); num++; INSERT_FIELD_AND_CONTINUE (opcode, num, 13); } else break; /* Handle 3 bit entry into the fp compare array. Valid values are 0..6 inclusive. */ case 'm': get_expression (s); if (the_insn.exp.X_op == O_constant) { s = expr_end; num = evaluate_absolute (&the_insn); CHECK_FIELD (num, 6, 0, 0); num = (num + 1) ^ 1; INSERT_FIELD_AND_CONTINUE (opcode, num, 13); } else break; /* Handle graphics test completers for ftest */ case '=': { num = pa_parse_ftest_gfx_completer (&s); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); } /* 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) { int a, m; /* XXX the completer stored away tibits of information for us to extract. We need a cleaner way to do this. Now that we have lots of letters again, it would be good to rethink this. */ m = (opcode & (1 << 8)) != 0; a = (opcode & (1 << 9)) != 0; opcode &= ~ (3 << 8); num = evaluate_absolute (&the_insn); if ((a == 1 && num >= 0) || (a == 0 && num < 0)) break; CHECK_FIELD (num, 8191, -8192, 0); low_sign_unext (num, 14, &num); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); } else { break; } /* Handle a 14 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) { int a, m; /* XXX the completer stored away tibits of information for us to extract. We need a cleaner way to do this. Now that we have lots of letters again, it would be good to rethink this. */ m = (opcode & (1 << 8)) != 0; a = (opcode & (1 << 9)) != 0; opcode &= ~ (3 << 8); num = evaluate_absolute (&the_insn); if ((a == 1 && num < 0) || (a == 0 && num > 0)) break; if (num % 4) break; CHECK_FIELD (num, 8191, -8192, 0); if (num < 0) opcode |= 1; num &= 0x1fff; num >>= 2; INSERT_FIELD_AND_CONTINUE (opcode, num, 3); } else { break; } /* Handle 14 bit immediated, shifted left three times. */ case '#': 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); if (num & 0x7) break; CHECK_FIELD (num, 8191, -8192, 0); if (num < 0) opcode |= 1; num &= 0x1fff; num >>= 3; INSERT_FIELD_AND_CONTINUE (opcode, num, 4); } 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; } break; /* Handle 14 bit immediate, shifted left twice. */ case 'd': 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); if (num & 0x3) break; CHECK_FIELD (num, 8191, -8192, 0); if (num < 0) opcode |= 1; num &= 0x1fff; num >>= 2; INSERT_FIELD_AND_CONTINUE (opcode, num, 3); } 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 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 a 22 bit branch displacement. */ case 'X': 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 w3, w2, w1, w, result; num = evaluate_absolute (&the_insn); if (num % 4) { as_bad (_("Branch to unaligned address")); break; } CHECK_FIELD (num, 8388607, -8388608, 0); if (the_insn.exp.X_add_symbol) num -= 8; sign_unext (num >> 2, 22, &result); dis_assemble_22 (result, &w3, &w1, &w2, &w); INSERT_FIELD_AND_CONTINUE (opcode, ((w3 << 21) | (w2 << 2) | (w1 << 16) | w), 0); } else { the_insn.reloc = R_HPPA_PCREL_CALL; the_insn.format = 22; 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 '%r1' implicit operand of addil instruction. */ case 'Z': if (*s == ',' && *(s + 1) == '%' && *(s + 3) == '1' && (*(s + 2) == 'r' || *(s + 2) == 'R')) { s += 4; continue; } else break; /* Handle '%sr0,%r31' implicit operand of be,l instruction. */ case 'Y': if (strncasecmp (s, "%sr0,%r31", 9) != 0) break; s += 9; continue; /* Handle immediate value of 0 for ordered load/store instructions. */ case '@': if (*s != '0') break; s++; continue; /* Handle a 2 bit shift count at 25. */ case '.': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 3, 1, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 6); /* Handle a 4 bit shift count at 25. */ case '*': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 15, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 6); /* Handle a 5 bit shift count at 26. */ case 'p': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 31, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5); /* Handle a 6 bit shift count at 20,22:26. */ case '~': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 63, 0, strict); num = 63 - num; opcode |= (num & 0x20) << 6; INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5); /* Handle a 6 bit field length at 23,27:31. */ case '%': flag = 0; num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 64, 1, strict); num--; opcode |= (num & 0x20) << 3; num = 31 - (num & 0x1f); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Handle a 6 bit field length at 19,27:31. */ case '|': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 64, 1, strict); num--; opcode |= (num & 0x20) << 7; num = 31 - (num & 0x1f); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Handle a 5 bit bit position at 26. */ case 'P': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 31, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 5); /* Handle a 6 bit bit position at 20,22:26. */ case 'q': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 63, 0, strict); opcode |= (num & 0x20) << 6; INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5); /* Handle a 5 bit immediate at 10 with 'd' as the complement of the high bit of the immediate. */ case 'B': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 63, 0, strict); if (num & 0x20) ; else opcode |= (1 << 13); INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 21); /* Handle a 5 bit immediate at 10. */ case 'Q': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; if (the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 31, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 21); /* Handle a 9 bit immediate at 28. */ case '$': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 511, 1, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 3); /* Handle a 13 bit immediate at 18. */ case 'A': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 8191, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 13); /* Handle a 26 bit immediate at 31. */ case 'D': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 671108864, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Handle a 3 bit SFU identifier at 25. */ case 'v': if (*s++ != ',') as_bad (_("Invalid SFU identifier")); num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 7, 0, strict); 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 1048575, 0, strict); 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 32767, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 11); /* Handle a 10bit SOP field for spop3. */ case '0': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 1023, 0, strict); 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 32767, 0, strict); 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); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 7, 0, strict); INSERT_FIELD_AND_CONTINUE (opcode, num, 6); /* Handle a 22bit SOP field for copr. */ case '2': num = pa_get_absolute_expression (&the_insn, &s); if (strict && the_insn.exp.X_op != O_constant) break; s = expr_end; CHECK_FIELD (num, 4194303, 0, strict); num = (num & 0x1f) | ((num & 0x003fffe0) << 4); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Handle a source FP operand format completer. */ case '{': if (*s == ',' && *(s+1) == 't') { the_insn.trunc = 1; s += 2; } else the_insn.trunc = 0; flag = pa_parse_fp_cnv_format (&s); the_insn.fpof1 = flag; if (flag == W || flag == UW) flag = SGL; if (flag == DW || flag == UDW) flag = DBL; if (flag == QW || flag == UQW) flag = QUAD; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* Handle a destination FP operand format completer. */ case '_': /* pa_parse_format needs the ',' prefix. */ s--; flag = pa_parse_fp_cnv_format (&s); the_insn.fpof2 = flag; if (flag == W || flag == UW) flag = SGL; if (flag == DW || flag == UDW) flag = DBL; if (flag == QW || flag == UQW) flag = QUAD; opcode |= flag << 13; if (the_insn.fpof1 == SGL || the_insn.fpof1 == DBL || the_insn.fpof1 == QUAD) { if (the_insn.fpof2 == SGL || the_insn.fpof2 == DBL || the_insn.fpof2 == QUAD) flag = 0; else if (the_insn.fpof2 == W || the_insn.fpof2 == DW || the_insn.fpof2 == QW) flag = 2; else if (the_insn.fpof2 == UW || the_insn.fpof2 == UDW || the_insn.fpof2 == UQW) flag = 6; else abort (); } else if (the_insn.fpof1 == W || the_insn.fpof1 == DW || the_insn.fpof1 == QW) { if (the_insn.fpof2 == SGL || the_insn.fpof2 == DBL || the_insn.fpof2 == QUAD) flag = 1; else abort (); } else if (the_insn.fpof1 == UW || the_insn.fpof1 == UDW || the_insn.fpof1 == UQW) { if (the_insn.fpof2 == SGL || the_insn.fpof2 == DBL || the_insn.fpof2 == QUAD) flag = 5; else abort (); } flag |= the_insn.trunc; INSERT_FIELD_AND_CONTINUE (opcode, flag, 15); /* 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 a source FP operand format completer at 20. */ case 'I': flag = pa_parse_fp_format (&s); the_insn.fpof1 = flag; INSERT_FIELD_AND_CONTINUE (opcode, flag, 11); /* 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; /* Handle all floating point registers. */ case 'f': switch (*++args) { /* Float target register. */ case 't': /* This should be more strict. Small steps. */ if (strict && *s != '%') break; num = pa_parse_number (&s, 0); CHECK_FIELD (num, 31, 0, 0); INSERT_FIELD_AND_CONTINUE (opcode, num, 0); /* Float target register with L/R selection. */ case 'T': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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); } /* Float operand 1. */ case 'a': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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; } /* Float operand 1 with L/R selection. */ case 'X': case 'A': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; pa_parse_number (&s, &result); CHECK_FIELD (result.number_part, 31, 0, 0); opcode |= result.number_part << 21; opcode |= (result.l_r_select & 1) << 7; continue; } /* Float operand 2. */ case 'b': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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; } /* Float operand 2 with L/R selection. */ case 'B': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; pa_parse_number (&s, &result); CHECK_FIELD (result.number_part, 31, 0, 0); opcode |= (result.number_part & 0x1f) << 16; opcode |= (result.l_r_select & 1) << 12; continue; } /* Float operand 3 for fmpyfadd, fmpynfadd. */ case 'C': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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; } /* Float mult operand 1 for fmpyadd, fmpysub */ case 'i': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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); } /* Float mult operand 2 for fmpyadd, fmpysub */ case 'j': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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); } /* Float mult target for fmpyadd, fmpysub */ case 'k': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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); } /* Float add operand 1 for fmpyadd, fmpysub */ case 'l': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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); } /* Float add target for fmpyadd, fmpysub */ case 'm': { struct pa_11_fp_reg_struct result; /* This should be more strict. Small steps. */ if (strict && *s != '%') break; 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 L/R register halves like 'x'. */ case 'e': { struct pa_11_fp_reg_struct result; if (strict && *s != '%') break; 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; } default: abort (); } 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); int 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 #ifdef OBJ_SOM && !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) #endif && (((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 22: { int distance = *valp, w3; CHECK_FIELD (new_val, 8388607, -8388608, 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 > 8388607 || distance < -8388608) && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000) CHECK_FIELD (distance, 8388607, -8388608, 0); /* Mask off 22 bits to be changed. */ bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) & 0xfc00e002, buf); sign_unext ((new_val - 8) >> 2, 22, &resulti); dis_assemble_22 (resulti, &w3, &w1, &w2, &w); result = ((w3 << 21) | (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 a graphics test complete for ftest. */ static int pa_parse_ftest_gfx_completer (s) char **s; { int value; value = 0; if (strncasecmp (*s, "acc8", 4) == 0) { value = 5; *s += 4; } else if (strncasecmp (*s, "acc6", 4) == 0) { value = 9; *s += 4; } else if (strncasecmp (*s, "acc4", 4) == 0) { value = 13; *s += 4; } else if (strncasecmp (*s, "acc2", 4) == 0) { value = 17; *s += 4; } else if (strncasecmp (*s, "acc", 3) == 0) { value = 1; *s += 3; } else if (strncasecmp (*s, "rej8", 4) == 0) { value = 6; *s += 4; } else if (strncasecmp (*s, "rej", 3) == 0) { value = 2; *s += 3; } else { value = 0; as_bad (_("Invalid FTEST completer: %s"), *s); } return value; } /* Parse an FP operand format completer returning the completer type. */ static fp_operand_format pa_parse_fp_cnv_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 if (strncasecmp (*s, "w", 1) == 0) { format = W; *s += 2; } else if (strncasecmp (*s, "uw", 2) == 0) { format = UW; *s += 3; } else if (strncasecmp (*s, "dw", 2) == 0) { format = DW; *s += 3; } else if (strncasecmp (*s, "udw", 3) == 0) { format = UDW; *s += 4; } else if (strncasecmp (*s, "qw", 2) == 0) { format = QW; *s += 3; } else if (strncasecmp (*s, "uqw", 3) == 0) { format = UQW; *s += 4; } else { format = ILLEGAL_FMT; as_bad (_("Invalid FP Operand Format: %3s"), *s); } } return format; } /* 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; else if ((*str)[3] == '\'' || (*str)[3] == '%') name[0] = tolower ((*str)[0]), name[1] = tolower ((*str)[1]), name[2] = tolower ((*str)[2]), name[3] = 0; 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); } /* When in strict mode we have a non-match, fix up the pointers and return to our caller. */ if (insn->exp.X_op != O_constant && strict) { expr_end = input_line_pointer; input_line_pointer = save_in; return 0; } 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 64 bit compare and branch completer returning the number (for encoding in instrutions) of the given completer. Nonnegated comparisons are returned as 0-7, negated comparisons are returned as 8-15. */ static int pa_parse_cmpb_64_cmpltr (s) char **s; { int cmpltr; char *name = *s + 1; char c; char *save_s = *s; cmpltr = -1; if (**s == ',') { *s += 1; while (**s != ',' && **s != ' ' && **s != '\t') *s += 1; c = **s; **s = 0x00; if (strcmp (name, "*") == 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, "*sv") == 0) { cmpltr = 6; } else if (strcasecmp (name, "*od") == 0) { cmpltr = 7; } else if (strcasecmp (name, "*tr") == 0) { cmpltr = 8; } else if (strcmp (name, "*<>") == 0) { cmpltr = 9; } else if (strcmp (name, "*>=") == 0) { cmpltr = 10; } else if (strcmp (name, "*>") == 0) { cmpltr = 11; } else if (strcmp (name, "*>>=") == 0) { cmpltr = 12; } else if (strcmp (name, "*>>") == 0) { cmpltr = 13; } else if (strcasecmp (name, "*nsv") == 0) { cmpltr = 14; } else if (strcasecmp (name, "*ev") == 0) { cmpltr = 15; } else { cmpltr = -1; } **s = c; } return cmpltr; } /* Parse a 64 bit compare immediate and branch completer returning the number (for encoding in instrutions) of the given completer. */ static int pa_parse_cmpib_64_cmpltr (s) char **s; { int cmpltr; char *name = *s + 1; char c; char *save_s = *s; cmpltr = -1; if (**s == ',') { *s += 1; while (**s != ',' && **s != ' ' && **s != '\t') *s += 1; c = **s; **s = 0x00; if (strcmp (name, "*<<") == 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, "*>=") == 0) { cmpltr = 6; } else if (strcasecmp (name, "*>") == 0) { cmpltr = 7; } else { cmpltr = -1; } **s = c; } 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; } /* Parse a 64 bit wide mode add and branch completer returning the number (for encoding in instrutions) of the given completer. */ static int pa_parse_addb_64_cmpltr (s) char **s; { 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 (strcasecmp (name, "nuv") == 0) { cmpltr = 4; } else if (strcasecmp (name, "*=") == 0) { cmpltr = 5; } else if (strcasecmp (name, "*<") == 0) { cmpltr = 6; } else if (strcasecmp (name, "*<=") == 0) { cmpltr = 7; } else if (strcmp (name, "tr") == 0) { cmpltr = 8; } else if (strcmp (name, "<>") == 0) { cmpltr = 9; } else if (strcmp (name, ">=") == 0) { cmpltr = 10; } else if (strcmp (name, ">") == 0) { cmpltr = 11; } else if (strcasecmp (name, "uv") == 0) { cmpltr = 12; } else if (strcasecmp (name, "*<>") == 0) { cmpltr = 13; } else if (strcasecmp (name, "*>=") == 0) { cmpltr = 14; } else if (strcasecmp (name, "*>") == 0) { cmpltr = 15; } /* If we have something like addb,n then there is no condition completer. */ else if (strcasecmp (name, "n") == 0) { 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; } #ifdef OBJ_SOM /* 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)); } #endif /* 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; #ifdef OBJ_SOM /* We must have a valid space and subspace. */ pa_check_current_space_and_subspace (); #endif 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; { #ifdef OBJ_SOM /* We must have a valid space and subspace. */ pa_check_current_space_and_subspace (); #endif 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; asymbol *sym; subsegT subseg, save_subseg; int i, reloc; char c, *p; if (now_seg != text_section) return; if (bfd_get_arch_info (stdoutput)->bits_per_address == 32) reloc = R_PARISC_DIR32; else reloc = R_PARISC_SEGREL32; save_seg = now_seg; save_subseg = now_subseg; /* 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. */ seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME); if (seg == ASEC_NULL) { seg = subseg_new (UNWIND_SECTION_NAME, 0); bfd_set_section_flags (stdoutput, seg, SEC_READONLY | SEC_HAS_CONTENTS | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA); bfd_set_section_alignment (stdoutput, seg, 2); } subseg_set (seg, 0); /* 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, reloc, 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, reloc, 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; #ifdef OBJ_SOM /* We must have a valid space and subspace. */ pa_check_current_space_and_subspace (); #endif /* .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; { #ifdef OBJ_SOM current_space = is_defined_space ("$TEXT$"); current_subspace = pa_subsegment_to_subspace (current_space->sd_seg, 0); #endif 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: