1999-05-03 15:29:11 +08:00
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/* tc-mips.h -- header file for tc-mips.c.
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2002-09-05 08:01:18 +08:00
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Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002
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2000-09-21 06:05:08 +08:00
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Free Software Foundation, Inc.
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1999-05-03 15:29:11 +08:00
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Contributed by the OSF and Ralph Campbell.
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Written by Keith Knowles and Ralph Campbell, working independently.
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Modified for ECOFF support by Ian Lance Taylor of Cygnus Support.
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This file is part of GAS.
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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 published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef TC_MIPS
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#define TC_MIPS
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#ifdef ANSI_PROTOTYPES
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struct frag;
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struct expressionS;
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#endif
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/* Default to big endian. */
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN 1
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#endif
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#define TARGET_ARCH bfd_arch_mips
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#define WORKING_DOT_WORD 1
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#define OLD_FLOAT_READS
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#define REPEAT_CONS_EXPRESSIONS
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#define RELOC_EXPANSION_POSSIBLE
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#define MAX_RELOC_EXPANSION 3
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#define LOCAL_LABELS_FB 1
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2001-12-02 21:14:48 +08:00
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/* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
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1999-05-03 15:29:11 +08:00
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relocation: */
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2001-08-26 18:42:12 +08:00
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#define MAX_GPREL_OFFSET (0x7FF0)
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1999-05-03 15:29:11 +08:00
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2002-10-12 13:23:33 +08:00
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#define md_relax_frag(segment, fragp, stretch) \
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mips_relax_frag(segment, fragp, stretch)
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extern int mips_relax_frag PARAMS ((asection *, struct frag *, long));
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1999-05-03 15:29:11 +08:00
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#define md_undefined_symbol(name) (0)
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#define md_operand(x)
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2000-12-28 18:07:56 +08:00
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extern void mips_handle_align PARAMS ((struct frag *));
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#define HANDLE_ALIGN(fragp) mips_handle_align (fragp)
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#define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)
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2000-01-15 01:58:29 +08:00
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1999-05-03 15:29:11 +08:00
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/* We permit PC relative difference expressions when generating
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embedded PIC code. */
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#define DIFF_EXPR_OK
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2000-09-21 06:05:08 +08:00
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/* Tell assembler that we have an itbl_mips.h header file to include. */
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1999-05-03 15:29:11 +08:00
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#define HAVE_ITBL_CPU
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/* The endianness of the target format may change based on command
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line arguments. */
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#define TARGET_FORMAT mips_target_format()
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extern const char *mips_target_format PARAMS ((void));
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2002-09-05 08:01:18 +08:00
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/* MIPS PIC level. */
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enum mips_pic_level
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{
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/* Do not generate PIC code. */
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NO_PIC,
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/* Generate PIC code as in the SVR4 MIPS ABI. */
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SVR4_PIC,
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/* Generate PIC code without using a global offset table: the data
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segment has a maximum size of 64K, all data references are off
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the $gp register, and all text references are PC relative. This
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is used on some embedded systems. */
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EMBEDDED_PIC
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};
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extern enum mips_pic_level mips_pic;
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1999-05-03 15:29:11 +08:00
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struct mips_cl_insn
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{
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unsigned long insn_opcode;
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const struct mips_opcode *insn_mo;
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/* The next two fields are used when generating mips16 code. */
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2002-11-30 16:39:46 +08:00
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bfd_boolean use_extend;
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1999-05-03 15:29:11 +08:00
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unsigned short extend;
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};
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extern int tc_get_register PARAMS ((int frame));
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2002-06-05 00:33:56 +08:00
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#define md_after_parse_args() mips_after_parse_args()
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extern void mips_after_parse_args PARAMS ((void));
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1999-05-03 15:29:11 +08:00
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#define tc_init_after_args() mips_init_after_args()
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extern void mips_init_after_args PARAMS ((void));
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#define md_parse_long_option(arg) mips_parse_long_option (arg)
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extern int mips_parse_long_option PARAMS ((const char *));
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#define tc_frob_label(sym) mips_define_label (sym)
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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 08:29:48 +08:00
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extern void mips_define_label PARAMS ((symbolS *));
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1999-05-03 15:29:11 +08:00
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#define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
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extern void mips_frob_file_before_adjust PARAMS ((void));
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2002-09-05 08:01:18 +08:00
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#define tc_frob_file_before_fix() mips_frob_file ()
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1999-05-03 15:29:11 +08:00
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extern void mips_frob_file PARAMS ((void));
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#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
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#define tc_frob_file_after_relocs mips_frob_file_after_relocs
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extern void mips_frob_file_after_relocs PARAMS ((void));
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#endif
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#define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
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extern int mips_fix_adjustable PARAMS ((struct fix *));
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2002-09-05 08:01:18 +08:00
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/* Global syms must not be resolved, to support ELF shared libraries.
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When generating embedded code, we don't have shared libs. */
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#define EXTERN_FORCE_RELOC \
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(OUTPUT_FLAVOR == bfd_target_elf_flavour \
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&& mips_pic != EMBEDDED_PIC)
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1999-05-03 15:29:11 +08:00
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/* When generating embedded PIC code we must keep PC relative
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relocations. */
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2002-10-01 14:15:33 +08:00
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#define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
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1999-05-03 15:29:11 +08:00
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extern int mips_force_relocation PARAMS ((struct fix *));
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/* Register mask variables. These are set by the MIPS assembly code
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and used by ECOFF and possibly other object file formats. */
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extern unsigned long mips_gprmask;
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extern unsigned long mips_cprmask[4];
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#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
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#define elf_tc_final_processing mips_elf_final_processing
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extern void mips_elf_final_processing PARAMS ((void));
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#define ELF_TC_SPECIAL_SECTIONS \
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{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
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{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
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{ ".lit4", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
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{ ".lit8", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
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{ ".ucode", SHT_MIPS_UCODE, 0 }, \
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{ ".mdebug", SHT_MIPS_DEBUG, 0 },
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/* Other special sections not generated by the assembler: .reginfo,
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.liblist, .conflict, .gptab, .got, .dynamic, .rel.dyn. */
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#endif
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extern void md_mips_end PARAMS ((void));
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#define md_end() md_mips_end()
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#define USE_GLOBAL_POINTER_OPT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
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2000-02-25 03:49:18 +08:00
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|| OUTPUT_FLAVOR == bfd_target_coff_flavour \
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1999-05-03 15:29:11 +08:00
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|| OUTPUT_FLAVOR == bfd_target_elf_flavour)
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extern void mips_pop_insert PARAMS ((void));
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#define md_pop_insert() mips_pop_insert()
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extern void mips_flush_pending_output PARAMS ((void));
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#define md_flush_pending_output mips_flush_pending_output
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extern void mips_enable_auto_align PARAMS ((void));
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#define md_elf_section_change_hook() mips_enable_auto_align()
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2002-11-19 05:08:54 +08:00
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extern enum dwarf2_format mips_dwarf2_format PARAMS ((void));
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#define DWARF2_FORMAT() mips_dwarf2_format ()
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2002-12-26 05:20:31 +08:00
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#define DWARF2_ADDR_SIZE(bfd) \
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(DWARF2_FORMAT () == dwarf2_format_32bit ? 4 : 8)
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1999-05-03 15:29:11 +08:00
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#endif /* TC_MIPS */
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