1/* tc-mips.h -- header file for tc-mips.c. 2 Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004, 3 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. 4 Contributed by the OSF and Ralph Campbell. 5 Written by Keith Knowles and Ralph Campbell, working independently. 6 Modified for ECOFF support by Ian Lance Taylor of Cygnus Support. 7 8 This file is part of GAS. 9 10 GAS is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GAS is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GAS; see the file COPYING. If not, write to the Free 22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 23 02110-1301, USA. */ 24 25#ifndef TC_MIPS 26#define TC_MIPS 27 28struct frag; 29struct expressionS; 30 31/* Default to big endian. */ 32#ifndef TARGET_BYTES_BIG_ENDIAN 33#define TARGET_BYTES_BIG_ENDIAN 1 34#endif 35 36#define TARGET_ARCH bfd_arch_mips 37 38#define WORKING_DOT_WORD 1 39#define OLD_FLOAT_READS 40#define REPEAT_CONS_EXPRESSIONS 41#define RELOC_EXPANSION_POSSIBLE 42#define MAX_RELOC_EXPANSION 3 43#define LOCAL_LABELS_FB 1 44 45/* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 46 relocation. */ 47#define MAX_GPREL_OFFSET (0x7FF0) 48 49#define md_relax_frag(segment, fragp, stretch) \ 50 mips_relax_frag(segment, fragp, stretch) 51extern int mips_relax_frag (asection *, struct frag *, long); 52 53#define md_undefined_symbol(name) (0) 54#define md_operand(x) 55 56extern char mips_nop_opcode (void); 57#define NOP_OPCODE (mips_nop_opcode ()) 58 59extern void mips_handle_align (struct frag *); 60#define HANDLE_ALIGN(fragp) mips_handle_align (fragp) 61 62#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) 63 64struct insn_label_list; 65struct mips_segment_info { 66 struct insn_label_list *labels; 67 unsigned int mips16 : 1; 68}; 69#define TC_SEGMENT_INFO_TYPE struct mips_segment_info 70 71/* This field is nonzero if the symbol is the target of a MIPS16 jump. */ 72#define TC_SYMFIELD_TYPE int 73 74/* Tell assembler that we have an itbl_mips.h header file to include. */ 75#define HAVE_ITBL_CPU 76 77/* The endianness of the target format may change based on command 78 line arguments. */ 79#define TARGET_FORMAT mips_target_format() 80extern const char *mips_target_format (void); 81 82/* MIPS PIC level. */ 83 84enum mips_pic_level 85{ 86 /* Do not generate PIC code. */ 87 NO_PIC, 88 89 /* Generate PIC code as in the SVR4 MIPS ABI. */ 90 SVR4_PIC, 91 92 /* VxWorks's PIC model. */ 93 VXWORKS_PIC 94}; 95 96extern enum mips_pic_level mips_pic; 97 98extern int tc_get_register (int frame); 99 100#define md_after_parse_args() mips_after_parse_args() 101extern void mips_after_parse_args (void); 102 103#define tc_init_after_args() mips_init_after_args() 104extern void mips_init_after_args (void); 105 106#define md_parse_long_option(arg) mips_parse_long_option (arg) 107extern int mips_parse_long_option (const char *); 108 109#define tc_frob_label(sym) mips_define_label (sym) 110extern void mips_define_label (symbolS *); 111 112#define tc_new_dot_label(sym) mips_record_label (sym) 113extern void mips_record_label (symbolS *); 114 115#define tc_frob_file_before_adjust() mips_frob_file_before_adjust () 116extern void mips_frob_file_before_adjust (void); 117 118#define tc_frob_file_before_fix() mips_frob_file () 119extern void mips_frob_file (void); 120 121#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) 122#define tc_frob_file_after_relocs mips_frob_file_after_relocs 123extern void mips_frob_file_after_relocs (void); 124#endif 125 126#define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) 127extern int mips_fix_adjustable (struct fix *); 128 129/* Values passed to md_apply_fix don't include symbol values. */ 130#define MD_APPLY_SYM_VALUE(FIX) 0 131 132/* Global syms must not be resolved, to support ELF shared libraries. */ 133#define EXTERN_FORCE_RELOC \ 134 (OUTPUT_FLAVOR == bfd_target_elf_flavour) 135 136/* When generating NEWABI code, we may need to have to keep combined 137 relocations which don't have symbols. */ 138#define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) 139extern int mips_force_relocation (struct fix *); 140 141#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 142 (! SEG_NORMAL (SEG) || mips_force_relocation (FIX)) 143 144/* Register mask variables. These are set by the MIPS assembly code 145 and used by ECOFF and possibly other object file formats. */ 146extern unsigned long mips_gprmask; 147extern unsigned long mips_cprmask[4]; 148 149#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) 150 151#define elf_tc_final_processing mips_elf_final_processing 152extern void mips_elf_final_processing (void); 153 154#endif 155 156extern void md_mips_end (void); 157#define md_end() md_mips_end() 158 159extern void mips_pop_insert (void); 160#define md_pop_insert() mips_pop_insert() 161 162extern void mips_emit_delays (void); 163#define md_flush_pending_output mips_emit_delays 164 165extern void mips_enable_auto_align (void); 166#define md_elf_section_change_hook() mips_enable_auto_align() 167 168#ifdef TE_IRIX 169enum dwarf2_format; 170extern enum dwarf2_format mips_dwarf2_format (asection *); 171# define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC) 172#else 173/* Use GAS' defaults. */ 174#endif 175 176extern int mips_dwarf2_addr_size (void); 177#define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size () 178#define DWARF2_FDE_RELOC_SIZE mips_dwarf2_addr_size () 179 180#define TARGET_USE_CFIPOP 1 181 182#define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions 183extern void mips_cfi_frame_initial_instructions (void); 184 185#define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum 186extern int tc_mips_regname_to_dw2regnum (char *regname); 187 188#define DWARF2_DEFAULT_RETURN_COLUMN 31 189#define DWARF2_CIE_DATA_ALIGNMENT (-4) 190 191#endif /* TC_MIPS */ 192