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205 lines
6.5 KiB
C
205 lines
6.5 KiB
C
/* tc-mips.h -- header file for tc-mips.c.
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Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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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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struct frag;
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struct expressionS;
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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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/* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
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relocation. */
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#define MAX_GPREL_OFFSET (0x7FF0)
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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 (asection *, struct frag *, long);
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#define md_undefined_symbol(name) (0)
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#define md_operand(x)
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extern void mips_handle_align (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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/* 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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/* Tell assembler that we have an itbl_mips.h header file to include. */
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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 (void);
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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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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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bfd_boolean use_extend;
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unsigned short extend;
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};
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extern int tc_get_register (int frame);
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#define md_after_parse_args() mips_after_parse_args()
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extern void mips_after_parse_args (void);
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#define tc_init_after_args() mips_init_after_args()
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extern void mips_init_after_args (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 (const char *);
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#define tc_frob_label(sym) mips_define_label (sym)
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extern void mips_define_label (symbolS *);
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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 (void);
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#define tc_frob_file_before_fix() mips_frob_file ()
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extern void mips_frob_file (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 (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 (struct fix *);
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/* Values passed to md_apply_fix3 don't include symbol values. */
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#define MD_APPLY_SYM_VALUE(FIX) 0
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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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/* When generating embedded PIC code we must keep PC relative
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relocations. */
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#define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
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extern int mips_force_relocation (struct fix *);
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
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(! SEG_NORMAL (SEG) || mips_force_relocation (FIX))
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/* We use this to turn branches to global symbols into branches to
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local symbols, so that they can be simplified. */
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#define TC_VALIDATE_FIX(fixp, this_segment, skip_label) \
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do \
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if (! mips_validate_fix ((fixp), (this_segment))) \
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goto skip_label; \
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while (0)
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extern int mips_validate_fix (struct fix *, asection *);
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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 (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 (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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|| OUTPUT_FLAVOR == bfd_target_coff_flavour \
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|| OUTPUT_FLAVOR == bfd_target_elf_flavour)
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extern void mips_pop_insert (void);
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#define md_pop_insert() mips_pop_insert()
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extern void mips_flush_pending_output (void);
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#define md_flush_pending_output mips_flush_pending_output
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extern void mips_enable_auto_align (void);
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#define md_elf_section_change_hook() mips_enable_auto_align()
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extern enum dwarf2_format mips_dwarf2_format (void);
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#define DWARF2_FORMAT() mips_dwarf2_format ()
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#define DWARF2_ADDR_SIZE(bfd) \
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(DWARF2_FORMAT () == dwarf2_format_32bit ? 4 : 8)
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typedef struct {
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offsetT tc_fr_offset;
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} tc_frag_data_type;
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#define TC_FRAG_TYPE tc_frag_data_type
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#endif /* TC_MIPS */
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