1999-05-03 09:29:11 +02:00
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/* tc-i960.h - Basic 80960 instruction formats.
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2014-03-05 12:46:15 +01:00
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Copyright (C) 1989-2014 Free Software Foundation, Inc.
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1999-05-03 09:29:11 +02:00
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as
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2007-07-03 13:01:12 +02:00
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published by the Free Software Foundation; either version 3,
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1999-05-03 09:29:11 +02:00
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or (at your option) any later version.
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GAS is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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2005-05-05 11:13:19 +02:00
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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1999-05-03 09:29:11 +02:00
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#ifndef TC_I960
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#define TC_I960 1
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1999-05-27 23:57:48 +02:00
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#ifdef OBJ_ELF
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#define TARGET_FORMAT "elf32-i960"
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#define TARGET_ARCH bfd_arch_i960
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#endif
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1999-05-03 09:29:11 +02:00
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#define TARGET_BYTES_BIG_ENDIAN 0
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#define WORKING_DOT_WORD
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/*
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* The 'COJ' instructions are actually COBR instructions with the 'b' in
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* the mnemonic replaced by a 'j'; they are ALWAYS "de-optimized" if necessary:
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* if the displacement will not fit in 13 bits, the assembler will replace them
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* with the corresponding compare and branch instructions.
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*
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* All of the 'MEMn' instructions are the same format; the 'n' in the name
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* indicates the default index scale factor (the size of the datum operated on).
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*
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* The FBRA formats are not actually an instruction format. They are the
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* "convenience directives" for branching on floating-point comparisons,
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* each of which generates 2 instructions (a 'bno' and one other branch).
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*
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* The CALLJ format is not actually an instruction format. It indicates that
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* the instruction generated (a CTRL-format 'call') should have its relocation
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* specially flagged for link-time replacement with a 'bal' or 'calls' if
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* appropriate.
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*/
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/* tailor gas */
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#define LOCAL_LABELS_FB 1
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#define BITFIELD_CONS_EXPRESSIONS
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/* tailor the coff format */
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#define COFF_MAGIC I960ROMAGIC
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#define OBJ_COFF_MAX_AUXENTRIES (2)
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/* MEANING OF 'n_other' in the symbol record.
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*
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* If non-zero, the 'n_other' fields indicates either a leaf procedure or
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* a system procedure, as follows:
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*
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* 1 <= n_other <= 32 :
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* The symbol is the entry point to a system procedure.
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* 'n_value' is the address of the entry, as for any other
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* procedure. The system procedure number (which can be used in
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* a 'calls' instruction) is (n_other-1). These entries come from
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* '.sysproc' directives.
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*
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* n_other == N_CALLNAME
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* the symbol is the 'call' entry point to a leaf procedure.
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* The *next* symbol in the symbol table must be the corresponding
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* 'bal' entry point to the procedure (see following). These
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* entries come from '.leafproc' directives in which two different
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* symbols are specified (the first one is represented here).
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*
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*
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* n_other == N_BALNAME
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* the symbol is the 'bal' entry point to a leaf procedure.
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* These entries result from '.leafproc' directives in which only
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* one symbol is specified, or in which the same symbol is
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* specified twice.
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*
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* Note that an N_CALLNAME entry *must* have a corresponding N_BALNAME entry,
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* but not every N_BALNAME entry must have an N_CALLNAME entry.
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*/
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#define N_CALLNAME ((char)-1)
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#define N_BALNAME ((char)-2)
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2000-09-16 02:56:47 +02:00
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/* i960 uses a custom relocation record. */
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1999-05-03 09:29:11 +02:00
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/* let obj-aout.h know */
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#define CUSTOM_RELOC_FORMAT 1
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/* let aout_gnu.h know */
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#define N_RELOCATION_INFO_DECLARED 1
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struct relocation_info
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{
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int r_address; /* File address of item to be relocated */
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unsigned
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r_index:24, /* Index of symbol on which relocation is based*/
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r_pcrel:1, /* 1 => relocate PC-relative; else absolute
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* On i960, pc-relative implies 24-bit
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* address, absolute implies 32-bit.
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*/
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r_length:2, /* Number of bytes to relocate:
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* 0 => 1 byte
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* 1 => 2 bytes
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* 2 => 4 bytes -- only value used for i960
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*/
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r_extern:1, r_bsr:1, /* Something for the GNU NS32K assembler */
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r_disp:1, /* Something for the GNU NS32K assembler */
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r_callj:1, /* 1 if relocation target is an i960 'callj' */
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nuthin:1; /* Unused */
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};
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2002-09-05 02:01:18 +02:00
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/* No shared lib support, so we don't need to ensure externally
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visible symbols can be overridden. */
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#define EXTERN_FORCE_RELOC 0
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/* Makes no sense to use the difference of 2 arbitrary symbols
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as the target of a call instruction. */
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
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((FIX)->fx_tcbit \
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2003-01-23 13:51:05 +01:00
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|| ! SEG_NORMAL (SEG) \
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|| TC_FORCE_RELOCATION (FIX))
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2002-09-05 02:01:18 +02:00
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/* reloc_callj() may replace a 'call' with a 'calls' or a
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'bal', in which cases it modifies *fixP as appropriate.
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In the case of a 'calls', no further work is required. */
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2008-08-13 01:39:31 +02:00
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extern int reloc_callj (struct fix *);
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2002-09-05 02:01:18 +02:00
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#define TC_FORCE_RELOCATION_ABS(FIX) \
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(TC_FORCE_RELOCATION (FIX) \
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|| reloc_callj (FIX))
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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(!(FIX)->fx_pcrel \
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|| TC_FORCE_RELOCATION (FIX) \
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|| reloc_callj (FIX))
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1999-05-03 09:29:11 +02:00
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#ifdef OBJ_COFF
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/* We store the bal information in the sy_tc field. */
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Add support for storing local symbols in a small structure to save
memory when assembling large files.
* as.h: Don't include struc-symbol.h.
(symbolS): Add typedef.
* symbols.c: Include struc-symbol.h.
(local_hash): New static variable.
(save_symbol_name): New static function, from symbol_create.
(symbol_create): Call save_symbol_name.
(local_symbol_count): New static variable.
(local_symbol_conversion_count): Likewise.
(LOCAL_SYMBOL_CHECK): Define.
(local_symbol_make): New static function.
(local_symbol_convert): New static function.
(colon): Handle local symbols. Create local symbol for local
label name.
(symbol_table_insert): Handle local symbols.
(symbol_find_or_make): Create local symbol for local label name.
(symbol_find_base): Check for local symbol.
(symbol_append, symbol_insert): Check for local symbols.
(symbol_clear_list_pointers, symbol_remove): Likewise.
(verify_symbol_chain): Likewise.
(copy_symbol_attributes): Likewise.
(resolve_symbol_value): Handle local symbols.
(resolve_local_symbol): New static function.
(resolve_local_symbol_values): New function.
(S_GET_VALUE, S_SET_VALUE): Handle local symbols.
(S_IS_FUNCTION, S_IS_EXTERNAL, S_IS_WEAK, S_IS_COMMON): Likewise.
(S_IS_DEFINED, S_IS_DEBUG, S_IS_LOCAL, S_GET_NAME): Likewise.
(S_GET_SEGMENT, S_SET_SEGMENT, S_SET_EXTERNAL): Likewise.
(S_CLEAR_EXTERNAL, S_SET_WEAK, S_SET_NAME): Likewise.
(symbol_previous, symbol_next): New functions.
(symbol_get_value_expression): Likewise.
(symbol_set_value_expression): Likewise.
(symbol_set_frag, symbol_get_frag): Likewise.
(symbol_mark_used, symbol_clear_used, symbol_used_p): Likewise.
(symbol_mark_used_in_reloc): Likewise.
(symbol_clear_used_in_reloc, symbol_used_in_reloc_p): Likewise.
(symbol_mark_mri_common, symbol_clear_mri_common): Likewise.
(symbol_mri_common_p): Likewise.
(symbol_mark_written, symbol_clear_written): Likewise.
(symbol_written_p): Likewise.
(symbol_mark_resolved, symbol_resolved_p): Likewise.
(symbol_section_p, symbol_equated_p): Likewise.
(symbol_constant_p): Likewise.
(symbol_get_bfdsym, symbol_set_bfdsym): Likewise.
(symbol_get_obj, symbol_set_obj): Likewise.
(symbol_get_tc, symbol_set_tc): Likewise.
(symbol_begin): Initialize local_hash.
(print_symbol_value_1): Handle local symbols.
(symbol_print_statistics): Print local symbol statistics.
* symbols.h: Include "struc-symbol.h" if not BFD_ASSEMBLER.
Declare new symbols.c functions. Move many declarations here from
struc-symbol.h.
(SYMBOLS_NEED_BACKPOINTERS): Define if needed.
* struc-symbol.h (SYMBOLS_NEED_BACKPOINTERS): Don't set.
(struct symbol): Move bsym to make it clearly the first field.
Remove TARGET_SYMBOL_FIELDS.
(symbolS): Don't typedef.
(struct broken_word): Remove.
(N_TYPE_seg, seg_N_TYPE): Move to symbol.h.
(SEGMENT_TO_SYMBOL_TYPE, N_REGISTER): Likewise.
(symbol_clear_list_pointers): Likewise.
(symbol_insert, symbol_remove): Likewise.
(symbol_previous, symbol_append): Likewise.
(verify_symbol_chain, verify_symbol_chain_2): Likewise.
(struct local_symbol): Define.
(local_symbol_converted_p, local_symbol_mark_converted): Define.
(local_symbol_resolved_p, local_symbol_mark_resolved): Define.
(local_symbol_get_frag, local_symbol_set_frag): Define.
(local_symbol_get_real_symbol): Define.
(local_symbol_set_real_symbol): Define.
Define.
* write.c (write_object_file): Call resolve_local_symbol_values.
* config/obj-ecoff.h (OBJ_SYMFIELD_TYPE): Define.
(TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-elf.h (OBJ_SYMFIELD_TYPE): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-multi.h (struct elf_obj_sy): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
(ECOFF_DEBUG_TARGET_SYMBOL_FIELDS): Don't define.
* config/tc-mcore.h: Don't include struc-symbol.h.
(TARGET_SYMBOL_FIELDS): Don't define.
(struct mcore_tc_sy): Define.
(TC_SYMFIELD_TYPE): Define.
* Many files: Use symbolS instead of struct symbol. Use new
accessor functions rather than referring to symbolS fields
directly.
* read.c (s_mri_common): Don't add in value of line_label.
* config/tc-mips.c (md_apply_fix): Correct parenthesization when
checking for SEC_LINK_ONCE.
* config/tc-sh.h (sh_fix_adjustable): Declare.
1999-06-03 02:29:48 +02:00
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#define TC_SYMFIELD_TYPE symbolS *
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1999-05-03 09:29:11 +02:00
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#endif
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2008-08-13 01:39:31 +02:00
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extern int i960_validate_fix (struct fix *, segT);
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2002-09-05 02:01:18 +02:00
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#define TC_VALIDATE_FIX(FIX,SEGTYPE,LABEL) \
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if (!i960_validate_fix (FIX, SEGTYPE)) goto LABEL
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1999-05-03 09:29:11 +02:00
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2002-09-05 02:01:18 +02:00
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#define tc_fix_adjustable(FIX) ((FIX)->fx_bsr == 0)
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1999-05-27 23:57:48 +02:00
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#ifndef OBJ_ELF
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gas:
* cgen.c, cgen.h, tc.h, write.c, config/obj-coff.c
* config/tc-a29k.c, config/tc-alpha.c, config/tc-alpha.h
* config/tc-arc.c, config/tc-arc.h, config/tc-arm.c
* config/tc-arm.h, config/tc-avr.c, config/tc-avr.h
* config/tc-cris.c, config/tc-crx.c, config/tc-d10v.c
* config/tc-d10v.h, config/tc-d30v.c, config/tc-d30v.h
* config/tc-dlx.c, config/tc-dlx.h, config/tc-fr30.h
* config/tc-frv.c, config/tc-frv.h, config/tc-h8300.c
* config/tc-h8500.c, config/tc-hppa.c, config/tc-hppa.h
* config/tc-i370.c, config/tc-i370.h, config/tc-i386.c
* config/tc-i386.h, config/tc-i860.c, config/tc-i860.h
* config/tc-i960.c, config/tc-i960.h, config/tc-ia64.c
* config/tc-ip2k.c, config/tc-ip2k.h, config/tc-iq2000.c
* config/tc-iq2000.h, config/tc-m32r.c, config/tc-m32r.h
* config/tc-m68hc11.c, config/tc-m68hc11.h, config/tc-m68k.c
* config/tc-m68k.h, config/tc-m88k.c, config/tc-maxq.c
* config/tc-mcore.c, config/tc-mcore.h, config/tc-mips.c
* config/tc-mips.h, config/tc-mmix.c, config/tc-mn10200.c
* config/tc-mn10300.c, config/tc-msp430.c, config/tc-ns32k.c
* config/tc-openrisc.h, config/tc-or32.c, config/tc-or32.h
* config/tc-pdp11.c, config/tc-pj.c, config/tc-pj.h
* config/tc-ppc.c, config/tc-ppc.h, config/tc-s390.c
* config/tc-s390.h, config/tc-sh64.c, config/tc-sh.c
* config/tc-sh.h, config/tc-sparc.c, config/tc-sparc.h
* config/tc-tahoe.c, config/tc-tic30.c, config/tc-tic4x.c
* config/tc-tic54x.c, config/tc-tic80.c, config/tc-v850.c
* config/tc-v850.h, config/tc-vax.c, config/tc-vax.h
* config/tc-w65.c, config/tc-xstormy16.c, config/tc-xstormy16.h
* config/tc-xtensa.c, config/tc-z8k.c:
Replace all instances of the string "_apply_fix3" with
"_apply_fix".
* po/POTFILES.in, po/gas.pot: Regenerate.
bfd:
* coff-i386.c: Change md_apply_fix3 to md_apply_fix in comment.
cgen:
* doc/porting.texi: Change all mention of md_apply_fix3 and
gas_cgen_md_apply_fix3 to md_apply_fix and gas_cgen_md_apply_fix
respectively.
2005-06-07 19:54:22 +02:00
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/* Values passed to md_apply_fix sometimes include symbol values. */
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2002-09-05 02:01:18 +02:00
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#define MD_APPLY_SYM_VALUE(FIX) tc_fix_adjustable (FIX)
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1999-05-27 23:57:48 +02:00
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#else
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gas:
* cgen.c, cgen.h, tc.h, write.c, config/obj-coff.c
* config/tc-a29k.c, config/tc-alpha.c, config/tc-alpha.h
* config/tc-arc.c, config/tc-arc.h, config/tc-arm.c
* config/tc-arm.h, config/tc-avr.c, config/tc-avr.h
* config/tc-cris.c, config/tc-crx.c, config/tc-d10v.c
* config/tc-d10v.h, config/tc-d30v.c, config/tc-d30v.h
* config/tc-dlx.c, config/tc-dlx.h, config/tc-fr30.h
* config/tc-frv.c, config/tc-frv.h, config/tc-h8300.c
* config/tc-h8500.c, config/tc-hppa.c, config/tc-hppa.h
* config/tc-i370.c, config/tc-i370.h, config/tc-i386.c
* config/tc-i386.h, config/tc-i860.c, config/tc-i860.h
* config/tc-i960.c, config/tc-i960.h, config/tc-ia64.c
* config/tc-ip2k.c, config/tc-ip2k.h, config/tc-iq2000.c
* config/tc-iq2000.h, config/tc-m32r.c, config/tc-m32r.h
* config/tc-m68hc11.c, config/tc-m68hc11.h, config/tc-m68k.c
* config/tc-m68k.h, config/tc-m88k.c, config/tc-maxq.c
* config/tc-mcore.c, config/tc-mcore.h, config/tc-mips.c
* config/tc-mips.h, config/tc-mmix.c, config/tc-mn10200.c
* config/tc-mn10300.c, config/tc-msp430.c, config/tc-ns32k.c
* config/tc-openrisc.h, config/tc-or32.c, config/tc-or32.h
* config/tc-pdp11.c, config/tc-pj.c, config/tc-pj.h
* config/tc-ppc.c, config/tc-ppc.h, config/tc-s390.c
* config/tc-s390.h, config/tc-sh64.c, config/tc-sh.c
* config/tc-sh.h, config/tc-sparc.c, config/tc-sparc.h
* config/tc-tahoe.c, config/tc-tic30.c, config/tc-tic4x.c
* config/tc-tic54x.c, config/tc-tic80.c, config/tc-v850.c
* config/tc-v850.h, config/tc-vax.c, config/tc-vax.h
* config/tc-w65.c, config/tc-xstormy16.c, config/tc-xstormy16.h
* config/tc-xtensa.c, config/tc-z8k.c:
Replace all instances of the string "_apply_fix3" with
"_apply_fix".
* po/POTFILES.in, po/gas.pot: Regenerate.
bfd:
* coff-i386.c: Change md_apply_fix3 to md_apply_fix in comment.
cgen:
* doc/porting.texi: Change all mention of md_apply_fix3 and
gas_cgen_md_apply_fix3 to md_apply_fix and gas_cgen_md_apply_fix
respectively.
2005-06-07 19:54:22 +02:00
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/* Values passed to md_apply_fix don't include the symbol value. */
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2002-09-05 02:01:18 +02:00
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#define MD_APPLY_SYM_VALUE(FIX) 0
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1999-05-27 23:57:48 +02:00
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#endif
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1999-05-03 09:29:11 +02:00
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2008-08-13 01:39:31 +02:00
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extern void brtab_emit (void);
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1999-05-03 09:29:11 +02:00
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#define md_end() brtab_emit ()
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2008-08-13 01:39:31 +02:00
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extern void tc_set_bal_of_call (symbolS *, symbolS *);
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1999-05-03 09:29:11 +02:00
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2008-08-13 01:39:31 +02:00
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extern struct symbol *tc_get_bal_of_call (symbolS *);
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1999-05-03 09:29:11 +02:00
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2008-08-13 01:39:31 +02:00
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extern void i960_handle_align (struct frag *);
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1999-05-03 09:29:11 +02:00
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#define HANDLE_ALIGN(FRAG) i960_handle_align (FRAG)
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#define NO_RELOC -1
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#define md_operand(x)
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extern const struct relax_type md_relax_table[];
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#define TC_GENERIC_RELAX_TABLE md_relax_table
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#define LINKER_RELAXING_SHRINKS_ONLY
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#define TC_FIX_TYPE struct { unsigned bsr : 1; }
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#define fx_bsr tc_fix_data.bsr
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#define TC_INIT_FIX_DATA(F) ((F)->tc_fix_data.bsr = 0)
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#endif
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